From c22706b9049c4c85205a8cc9a3dc72a4e4a52be5 Mon Sep 17 00:00:00 2001 From: Michael Drake Date: Sat, 31 Oct 2015 17:48:18 +0000 Subject: [PATCH] Update duktape to regexp-canonicalize-lookup branch. - Add an optional 128kB lookup to optimize regexp canonicalization #411. https://github.com/svaarala/duktape/pull/411 This speeds up worst-case case-insensitive unicode regex handling. --- javascript/duktape/duk_config.h | 164 +- javascript/duktape/duktape.c | 10651 +++++++++++++++++++++++++----- javascript/duktape/duktape.h | 77 +- 3 files changed, 9000 insertions(+), 1892 deletions(-) diff --git a/javascript/duktape/duk_config.h b/javascript/duktape/duk_config.h index 2cdb49fd7..adf275432 100644 --- a/javascript/duktape/duk_config.h +++ b/javascript/duktape/duk_config.h @@ -170,6 +170,11 @@ static __inline__ unsigned long long duk_rdtsc(void) { /* PowerPC */ #if defined(__powerpc) || defined(__powerpc__) || defined(__PPC__) #define DUK_F_PPC +#if defined(__PPC64__) +#define DUK_F_PPC64 +#else +#define DUK_F_PPC32 +#endif #endif /* Linux */ @@ -478,7 +483,9 @@ static __inline__ unsigned long long duk_rdtsc(void) { * there is no platform specific date parsing/formatting but there is still * the ISO 8601 standard format. */ +#if defined(DUK_COMPILING_DUKTAPE) #include +#endif #include #elif defined(DUK_F_FLASHPLAYER) /* Crossbridge */ @@ -1082,6 +1089,11 @@ typedef duk_int_t duk_idx_t; #define DUK_IDX_MIN DUK_INT_MIN #define DUK_IDX_MAX DUK_INT_MAX +/* Unsigned index variant. */ +typedef duk_uint_t duk_uidx_t; +#define DUK_UIDX_MIN DUK_UINT_MIN +#define DUK_UIDX_MAX DUK_UINT_MAX + /* Array index values, could be exact 32 bits. * Currently no need for signed duk_arridx_t. */ @@ -1495,8 +1507,8 @@ typedef struct duk_hthread duk_context; #define DUK_USE_PACKED_TVAL_POSSIBLE #endif -/* PPC: packed always possible */ -#if !defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_PPC) +/* PPC32: packed always possible */ +#if !defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_PPC32) #define DUK_USE_PACKED_TVAL_POSSIBLE #endif @@ -2018,6 +2030,18 @@ typedef FILE duk_file; #define DUK_ALWAYS_INLINE /*nop*/ #endif +/* Temporary workaround for GH-323: avoid inlining control when + * compiling from multiple sources, as it causes compiler trouble. + */ +#if !defined(DUK_SINGLE_FILE) +#undef DUK_NOINLINE +#undef DUK_INLINE +#undef DUK_ALWAYS_INLINE +#define DUK_NOINLINE /*nop*/ +#define DUK_INLINE /*nop*/ +#define DUK_ALWAYS_INLINE /*nop*/ +#endif + /* * Symbol visibility macros * @@ -2227,6 +2251,16 @@ typedef FILE duk_file; #define DUK_USE_COMPILER_STRING "unknown" #endif +/* + * Target info string + */ + +#if defined(DUK_OPT_TARGET_INFO) +#define DUK_USE_TARGET_INFO DUK_OPT_TARGET_INFO +#else +#define DUK_USE_TARGET_INFO "unknown" +#endif + /* * Long control transfer, setjmp/longjmp or alternatives * @@ -2263,16 +2297,6 @@ typedef FILE duk_file; #error internal error #endif -/* - * Target info string - */ - -#if defined(DUK_OPT_TARGET_INFO) -#define DUK_USE_TARGET_INFO DUK_OPT_TARGET_INFO -#else -#define DUK_USE_TARGET_INFO "unknown" -#endif - /* * Speed/size and other performance options */ @@ -2294,11 +2318,17 @@ typedef FILE duk_file; * where a speed-size tradeoff exists (e.g. lookup tables). When it really * matters, specific use flags may be appropriate. */ -#define DUK_USE_PREFER_SIZE +#undef DUK_USE_PREFER_SIZE /* Use a sliding window for lexer; slightly larger footprint, slightly faster. */ #define DUK_USE_LEXER_SLIDING_WINDOW +/* Transparent JSON.stringify() fastpath. */ +#undef DUK_USE_JSON_STRINGIFY_FASTPATH +#if defined(DUK_OPT_JSON_STRINGIFY_FASTPATH) +#define DUK_USE_JSON_STRINGIFY_FASTPATH +#endif + /* * Tagged type representation (duk_tval) */ @@ -2447,6 +2477,16 @@ typedef FILE duk_file; #define DUK_USE_DEBUGGER_DUMPHEAP #endif +#define DUK_USE_DEBUGGER_THROW_NOTIFY +#if defined(DUK_OPT_NO_DEBUGGER_THROW_NOTIFY) +#undef DUK_USE_DEBUGGER_THROW_NOTIFY +#endif + +#undef DUK_USE_DEBUGGER_PAUSE_UNCAUGHT +#if defined(DUK_OPT_DEBUGGER_PAUSE_UNCAUGHT) +#define DUK_USE_DEBUGGER_PAUSE_UNCAUGHT +#endif + /* Debugger transport read/write torture. */ #undef DUK_USE_DEBUGGER_TRANSPORT_TORTURE #if defined(DUK_OPT_DEBUGGER_TRANSPORT_TORTURE) @@ -2681,6 +2721,12 @@ typedef FILE duk_file; #undef DUK_USE_NONSTD_ARRAY_WRITE #endif +/* Node.js Buffer and Khronos/ES6 typed array support. */ +#define DUK_USE_BUFFEROBJECT_SUPPORT +#if defined(DUK_OPT_NO_BUFFEROBJECT_SUPPORT) +#undef DUK_USE_BUFFEROBJECT_SUPPORT +#endif + /* * Optional C API options */ @@ -2703,20 +2749,6 @@ typedef FILE duk_file; #undef DUK_USE_TAILCALL #endif -/* - * Deep vs. shallow stack. - * - * Some embedded platforms have very shallow stack (e.g. 64kB); default to - * a shallow stack on unknown platforms or known embedded platforms. - */ - -#if defined(DUK_F_LINUX) || defined(DUK_F_BSD) || defined(DUK_F_WINDOWS) || \ - defined(DUK_F_APPLE) || defined(DUK_OPT_DEEP_C_STACK) -#define DUK_USE_DEEP_C_STACK -#else -#undef DUK_USE_DEEP_C_STACK -#endif - /* * Ecmascript compiler */ @@ -2930,10 +2962,6 @@ typedef FILE duk_file; #define DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS #undef DUK_USE_EXPLICIT_NULL_INIT -#if !defined(DUK_USE_PACKED_TVAL) -#define DUK_USE_EXPLICIT_NULL_INIT -#endif - #define DUK_USE_ZERO_BUFFER_DATA #if defined(DUK_OPT_NO_ZERO_BUFFER_DATA) #undef DUK_USE_ZERO_BUFFER_DATA @@ -2987,6 +3015,42 @@ typedef FILE duk_file; #undef DUK_USE_GCC_PRAGMAS #endif +/* + * User declarations + */ + +#if defined(DUK_OPT_DECLARE) +#define DUK_USE_USER_DECLARE() DUK_OPT_DECLARE +#else +#define DUK_USE_USER_DECLARE() /* no user declarations */ +#endif + +/* + * Autogenerated defaults + */ + +#define DUK_USE_COMPILER_RECLIMIT 2500 +#undef DUK_USE_DATE_FORMAT_STRING +#undef DUK_USE_DATE_GET_LOCAL_TZOFFSET +#undef DUK_USE_DATE_GET_NOW +#undef DUK_USE_DATE_PARSE_STRING +#undef DUK_USE_DATE_PRS_GETDATE +#undef DUK_USE_EXEC_FUN_LOCAL +#undef DUK_USE_INTEGER_ME +#undef DUK_USE_INTERRUPT_DEBUG_FIXUP +#define DUK_USE_JSON_DECNUMBER_FASTPATH +#define DUK_USE_JSON_DECSTRING_FASTPATH +#define DUK_USE_JSON_DEC_RECLIMIT 1000 +#define DUK_USE_JSON_EATWHITE_FASTPATH +#define DUK_USE_JSON_ENC_RECLIMIT 1000 +#define DUK_USE_JSON_QUOTESTRING_FASTPATH +#undef DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE +#define DUK_USE_MARK_AND_SWEEP_RECLIMIT 256 +#define DUK_USE_NATIVE_CALL_RECLIMIT 1000 +#undef DUK_USE_REFZERO_FINALIZER_TORTURE +#define DUK_USE_REGEXP_COMPILER_RECLIMIT 10000 +#define DUK_USE_REGEXP_EXECUTOR_RECLIMIT 10000 + /* * Alternative customization header * @@ -2999,6 +3063,14 @@ typedef FILE duk_file; #include "duk_custom.h" #endif +/* + * You may add overriding #define/#undef directives below for + * customization. You of course cannot un-#include or un-typedef + * anything; these require direct changes above. + */ + +/* __OVERRIDE_DEFINES__ */ + /* * Date provider selection * @@ -3060,36 +3132,6 @@ DUK_INTERNAL_DECL duk_bool_t duk_bi_date_format_parts_strftime(duk_context *ctx, #endif /* DUK_COMPILING_DUKTAPE */ -/* - * User declarations - */ - -#if defined(DUK_OPT_DECLARE) -#define DUK_USE_USER_DECLARE() DUK_OPT_DECLARE -#else -#define DUK_USE_USER_DECLARE() /* no user declarations */ -#endif - -/* - * Autogenerated defaults - */ - -#undef DUK_USE_DATE_PRS_GETDATE -#undef DUK_USE_INTEGER_ME -#define DUK_USE_JSON_DECNUMBER_FASTPATH -#define DUK_USE_JSON_DECSTRING_FASTPATH -#define DUK_USE_JSON_EATWHITE_FASTPATH -#define DUK_USE_JSON_QUOTESTRING_FASTPATH -#undef DUK_USE_JSON_STRINGIFY_FASTPATH - -/* - * You may add overriding #define/#undef directives below for - * customization. You of course cannot un-#include or un-typedef - * anything; these require direct changes above. - */ - -/* __OVERRIDE_DEFINES__ */ - /* * Sanity check for the final effective internal defines. Also * double checks user tweaks made by an optional duk_custom.h header. diff --git a/javascript/duktape/duktape.c b/javascript/duktape/duktape.c index 5ee88adf6..3629388a3 100644 --- a/javascript/duktape/duktape.c +++ b/javascript/duktape/duktape.c @@ -1,6 +1,8 @@ /* - * Single file autogenerated distributable for Duktape 1.2.99. - * Git commit 2a41d0a38eef5edfe8691cf09427b6ee8a3ad5c9 (v1.2.0-310-g2a41d0a). + * Single source autogenerated distributable for Duktape 1.3.99. + + * Git commit 40453939c5a5aa16898d19bbac4d02f77196cc8b (v1.3.0-138-g4045393). + * Git branch regexp-canonicalize-lookup. * * See Duktape AUTHORS.rst and LICENSE.txt for copyright and * licensing information. @@ -53,8 +55,9 @@ * Please include an e-mail address, a link to your GitHub profile, or something * similar to allow your contribution to be identified accurately. * -* The following people have contributed code and agreed to irrevocably license -* their contributions under the Duktape ``LICENSE.txt`` (in order of appearance): +* The following people have contributed code, website contents, or Wiki contents, +* and agreed to irrevocably license their contributions under the Duktape +* ``LICENSE.txt`` (in order of appearance): * * * Sami Vaarala * * Niki Dobrev @@ -62,6 +65,7 @@ * * L\u00e1szl\u00f3 Lang\u00f3 * * Legimet * * Karl Skomski +* * Bruce Pascoe * * Other contributions * =================== @@ -225,6 +229,7 @@ struct duk_hbufferobject; struct duk_hbuffer; struct duk_hbuffer_fixed; struct duk_hbuffer_dynamic; +struct duk_hbuffer_external; struct duk_propaccessor; union duk_propvalue; @@ -275,6 +280,7 @@ typedef struct duk_hthread duk_hthread; typedef struct duk_hbuffer duk_hbuffer; typedef struct duk_hbuffer_fixed duk_hbuffer_fixed; typedef struct duk_hbuffer_dynamic duk_hbuffer_dynamic; +typedef struct duk_hbuffer_external duk_hbuffer_external; typedef struct duk_propaccessor duk_propaccessor; typedef union duk_propvalue duk_propvalue; @@ -1581,13 +1587,13 @@ DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[2624]; DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[147]; DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[1952]; #ifdef DUK_USE_BUILTIN_INITJS -DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187]; +DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[1757]; #endif /* DUK_USE_BUILTIN_INITJS */ #endif /* !DUK_SINGLE_FILE */ #define DUK_BUILTINS_DATA_LENGTH 1952 #ifdef DUK_USE_BUILTIN_INITJS -#define DUK_BUILTIN_INITJS_DATA_LENGTH 187 +#define DUK_BUILTIN_INITJS_DATA_LENGTH 1757 #endif /* DUK_USE_BUILTIN_INITJS */ #define DUK_BIDX_GLOBAL 0 @@ -2926,13 +2932,13 @@ DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[2624]; DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[147]; DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[1952]; #ifdef DUK_USE_BUILTIN_INITJS -DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187]; +DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[1757]; #endif /* DUK_USE_BUILTIN_INITJS */ #endif /* !DUK_SINGLE_FILE */ #define DUK_BUILTINS_DATA_LENGTH 1952 #ifdef DUK_USE_BUILTIN_INITJS -#define DUK_BUILTIN_INITJS_DATA_LENGTH 187 +#define DUK_BUILTIN_INITJS_DATA_LENGTH 1757 #endif /* DUK_USE_BUILTIN_INITJS */ #define DUK_BIDX_GLOBAL 0 @@ -4271,13 +4277,13 @@ DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[2624]; DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[147]; DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[1952]; #ifdef DUK_USE_BUILTIN_INITJS -DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187]; +DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[1757]; #endif /* DUK_USE_BUILTIN_INITJS */ #endif /* !DUK_SINGLE_FILE */ #define DUK_BUILTINS_DATA_LENGTH 1952 #ifdef DUK_USE_BUILTIN_INITJS -#define DUK_BUILTIN_INITJS_DATA_LENGTH 187 +#define DUK_BUILTIN_INITJS_DATA_LENGTH 1757 #endif /* DUK_USE_BUILTIN_INITJS */ #define DUK_BIDX_GLOBAL 0 @@ -4869,12 +4875,12 @@ DUK_INTERNAL_DECL duk_uint8_t *duk_bw_insert_ensure_area(duk_hthread *thr, duk_b DUK_INTERNAL_DECL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len); /* No duk_bw_remove_ensure_slice(), functionality would be identical. */ -DUK_ALWAYS_INLINE DUK_INTERNAL_DECL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p); -DUK_ALWAYS_INLINE DUK_INTERNAL_DECL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p); -DUK_ALWAYS_INLINE DUK_INTERNAL_DECL duk_double_t duk_raw_read_double_be(duk_uint8_t **p); -DUK_ALWAYS_INLINE DUK_INTERNAL_DECL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val); -DUK_ALWAYS_INLINE DUK_INTERNAL_DECL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val); -DUK_ALWAYS_INLINE DUK_INTERNAL_DECL void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val); +DUK_INTERNAL_DECL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p); +DUK_INTERNAL_DECL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p); +DUK_INTERNAL_DECL duk_double_t duk_raw_read_double_be(duk_uint8_t **p); +DUK_INTERNAL_DECL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val); +DUK_INTERNAL_DECL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val); +DUK_INTERNAL_DECL void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val); #if defined(DUK_USE_DEBUGGER_SUPPORT) /* For now only needed by the debugger. */ DUK_INTERNAL void duk_byteswap_bytes(duk_uint8_t *p, duk_small_uint_t len); @@ -4948,7 +4954,7 @@ DUK_INTERNAL_DECL const char *duk_str_not_configurable; #define DUK_STR_SPRINTF_TOO_LONG duk_str_sprintf_too_long #define DUK_STR_ALLOC_FAILED duk_str_alloc_failed #define DUK_STR_POP_TOO_MANY duk_str_pop_too_many -#define DUK_STR_BUFFER_NOT_DYNAMIC duk_str_buffer_not_dynamic +#define DUK_STR_WRONG_BUFFER_TYPE duk_str_wrong_buffer_type #define DUK_STR_FAILED_TO_EXTEND_VALSTACK duk_str_failed_to_extend_valstack #define DUK_STR_ENCODE_FAILED duk_str_encode_failed #define DUK_STR_DECODE_FAILED duk_str_decode_failed @@ -4982,7 +4988,7 @@ DUK_INTERNAL_DECL const char *duk_str_buffer_too_long; DUK_INTERNAL_DECL const char *duk_str_sprintf_too_long; DUK_INTERNAL_DECL const char *duk_str_alloc_failed; DUK_INTERNAL_DECL const char *duk_str_pop_too_many; -DUK_INTERNAL_DECL const char *duk_str_buffer_not_dynamic; +DUK_INTERNAL_DECL const char *duk_str_wrong_buffer_type; DUK_INTERNAL_DECL const char *duk_str_failed_to_extend_valstack; DUK_INTERNAL_DECL const char *duk_str_encode_failed; DUK_INTERNAL_DECL const char *duk_str_decode_failed; @@ -5344,11 +5350,6 @@ typedef duk_uint32_t duk_instr_t; #define DUK_EXTRAOP_LABEL 32 #define DUK_EXTRAOP_ENDLABEL 33 -/* DUK_OP_EXTRA for debugging */ -#define DUK_EXTRAOP_DUMPREG 128 -#define DUK_EXTRAOP_DUMPREGS 129 -#define DUK_EXTRAOP_LOGMARK 130 - /* DUK_OP_CALL flags in A */ #define DUK_BC_CALL_FLAG_TAILCALL (1 << 0) #define DUK_BC_CALL_FLAG_EVALCALL (1 << 1) @@ -5360,8 +5361,7 @@ typedef duk_uint32_t duk_instr_t; #define DUK_BC_TRYCATCH_FLAG_WITH_BINDING (1 << 3) /* DUK_OP_RETURN flags in A */ -#define DUK_BC_RETURN_FLAG_FAST (1 << 0) -#define DUK_BC_RETURN_FLAG_HAVE_RETVAL (1 << 1) +#define DUK_BC_RETURN_FLAG_HAVE_RETVAL (1 << 0) /* DUK_OP_DECLVAR flags in A; bottom bits are reserved for propdesc flags (DUK_PROPDESC_FLAG_XXX) */ #define DUK_BC_DECLVAR_FLAG_UNDEF_VALUE (1 << 4) /* use 'undefined' for value automatically */ @@ -5818,11 +5818,6 @@ DUK_INTERNAL_DECL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_ #define DUK_JS_COMPILER_H_INCLUDED /* ecmascript compiler limits */ -#if defined(DUK_USE_DEEP_C_STACK) -#define DUK_COMPILER_RECURSION_LIMIT 2500L -#else -#define DUK_COMPILER_RECURSION_LIMIT 50L -#endif #define DUK_COMPILER_TOKEN_LIMIT 100000000L /* 1e8: protects against deeply nested inner functions */ /* maximum loopcount for peephole optimization */ @@ -5992,7 +5987,7 @@ struct duk_compiler_func { duk_bool_t is_setget; /* is a setter/getter */ duk_bool_t is_decl; /* is a function declaration (as opposed to function expression) */ duk_bool_t is_strict; /* function is strict */ - duk_bool_t is_notail; /* function must not be tailcalled */ + duk_bool_t is_notail; /* function must not be tail called */ duk_bool_t in_directive_prologue; /* parsing in "directive prologue", recognize directives */ duk_bool_t in_scanning; /* parsing in "scanning" phase (first pass) */ duk_bool_t may_direct_eval; /* function may call direct eval */ @@ -6035,7 +6030,7 @@ struct duk_compiler_ctx { * Prototypes */ -#define DUK_JS_COMPILE_FLAG_EVAL (1 << 0) /* source is eval code (not program) */ +#define DUK_JS_COMPILE_FLAG_EVAL (1 << 0) /* source is eval code (not global) */ #define DUK_JS_COMPILE_FLAG_STRICT (1 << 1) /* strict outer context */ #define DUK_JS_COMPILE_FLAG_FUNCEXPR (1 << 2) /* source is a function expression (used for Function constructor) */ @@ -6054,19 +6049,9 @@ DUK_INTERNAL_DECL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_b #define DUK_RE_MAX_ATOM_COPIES 1000 /* regexp compilation limits */ -#if defined(DUK_USE_DEEP_C_STACK) -#define DUK_RE_COMPILE_RECURSION_LIMIT 10000 -#else -#define DUK_RE_COMPILE_RECURSION_LIMIT 100 -#endif #define DUK_RE_COMPILE_TOKEN_LIMIT 100000000L /* 1e8 */ /* regexp execution limits */ -#if defined(DUK_USE_DEEP_C_STACK) -#define DUK_RE_EXECUTE_RECURSION_LIMIT 10000 -#else -#define DUK_RE_EXECUTE_RECURSION_LIMIT 100 -#endif #define DUK_RE_EXECUTE_STEPS_LIMIT 1000000000L /* 1e9 */ /* regexp opcodes */ @@ -6149,7 +6134,7 @@ DUK_INTERNAL_DECL void duk_regexp_match_force_global(duk_hthread *thr); /* hack * * Selecting the tagged type format involves many trade-offs (memory * use, size and performance of generated code, portability, etc), - * see doc/types.txt for a detailed discussion (especially of how the + * see doc/types.rst for a detailed discussion (especially of how the * IEEE double format is used to pack tagged values). * * NB: because macro arguments are often expressions, macros should @@ -6185,22 +6170,20 @@ typedef union duk_double_union duk_tval; #if defined(DUK_USE_FASTINT) #define DUK_TAG_FASTINT 0xfff1UL /* embed: integer value */ #endif -#define DUK_TAG_UNDEFINED 0xfff2UL /* embed: 0 or 1 (normal or unused) */ -#define DUK_TAG_NULL 0xfff3UL /* embed: nothing */ -#define DUK_TAG_BOOLEAN 0xfff4UL /* embed: 0 or 1 (false or true) */ +#define DUK_TAG_UNUSED 0xfff2UL /* marker; not actual tagged value */ +#define DUK_TAG_UNDEFINED 0xfff3UL /* embed: nothing */ +#define DUK_TAG_NULL 0xfff4UL /* embed: nothing */ +#define DUK_TAG_BOOLEAN 0xfff5UL /* embed: 0 or 1 (false or true) */ /* DUK_TAG_NUMBER would logically go here, but it has multiple 'tags' */ -#define DUK_TAG_POINTER 0xfff5UL /* embed: void ptr */ -#define DUK_TAG_LIGHTFUNC 0xfff6UL /* embed: func ptr */ -#define DUK_TAG_STRING 0xfff7UL /* embed: duk_hstring ptr */ -#define DUK_TAG_OBJECT 0xfff8UL /* embed: duk_hobject ptr */ -#define DUK_TAG_BUFFER 0xfff9UL /* embed: duk_hbuffer ptr */ +#define DUK_TAG_POINTER 0xfff6UL /* embed: void ptr */ +#define DUK_TAG_LIGHTFUNC 0xfff7UL /* embed: func ptr */ +#define DUK_TAG_STRING 0xfff8UL /* embed: duk_hstring ptr */ +#define DUK_TAG_OBJECT 0xfff9UL /* embed: duk_hobject ptr */ +#define DUK_TAG_BUFFER 0xfffaUL /* embed: duk_hbuffer ptr */ /* for convenience */ -#define DUK_XTAG_UNDEFINED_ACTUAL 0xfff20000UL -#define DUK_XTAG_UNDEFINED_UNUSED 0xfff20001UL -#define DUK_XTAG_NULL 0xfff30000UL -#define DUK_XTAG_BOOLEAN_FALSE 0xfff40000UL -#define DUK_XTAG_BOOLEAN_TRUE 0xfff40001UL +#define DUK_XTAG_BOOLEAN_FALSE 0xfff50000UL +#define DUK_XTAG_BOOLEAN_TRUE 0xfff50001UL /* two casts to avoid gcc warning: "warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]" */ #ifdef DUK_USE_64BIT_OPS @@ -6277,10 +6260,12 @@ typedef union duk_double_union duk_tval; #define DUK__TVAL_GET_FASTINT_I32(v) ((duk_int32_t) (v)->ui[DUK_DBL_IDX_UI1]) #endif /* DUK_USE_FASTINT */ -#define DUK_TVAL_SET_UNDEFINED_ACTUAL(v) DUK_DBLUNION_SET_HIGH32((v), DUK_XTAG_UNDEFINED_ACTUAL) -#define DUK_TVAL_SET_UNDEFINED_UNUSED(v) DUK_DBLUNION_SET_HIGH32((v), DUK_XTAG_UNDEFINED_UNUSED) - -/* Note: 16-bit initializer suffices (unlike for undefined/boolean) */ +#define DUK_TVAL_SET_UNDEFINED(v) do { \ + (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNDEFINED; \ + } while (0) +#define DUK_TVAL_SET_UNUSED(v) do { \ + (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNUSED; \ + } while (0) #define DUK_TVAL_SET_NULL(v) do { \ (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_NULL; \ } while (0) @@ -6291,12 +6276,17 @@ typedef union duk_double_union duk_tval; /* Assumes that caller has normalized NaNs, otherwise trouble ahead. */ #if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_DOUBLE(v,d) DUK_DBLUNION_SET_DOUBLE((v), (d)) +#define DUK_TVAL_SET_DOUBLE(v,d) do { \ + duk_double_t duk__dblval; \ + duk__dblval = (d); \ + DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \ + DUK_DBLUNION_SET_DOUBLE((v), duk__dblval); \ + } while (0) #define DUK_TVAL_SET_FASTINT(v,i) DUK__TVAL_SET_FASTINT((v), (i)) #define DUK_TVAL_SET_FASTINT_I32(v,i) DUK__TVAL_SET_FASTINT_I32((v), (i)) #define DUK_TVAL_SET_FASTINT_U32(v,i) DUK__TVAL_SET_FASTINT_U32((v), (i)) #define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) duk_tval_set_number_chkfast((v), (d)) -#define DUK_TVAL_SET_NUMBER(v,d) DUK_DBLUNION_SET_DOUBLE((v), (d)) +#define DUK_TVAL_SET_NUMBER(v,d) DUK_TVAL_SET_DOUBLE((v), (d)) #define DUK_TVAL_CHKFAST_INPLACE(v) do { \ duk_tval *duk__tv; \ duk_double_t duk__d; \ @@ -6307,9 +6297,14 @@ typedef union duk_double_union duk_tval; } \ } while (0) #else -#define DUK_TVAL_SET_NUMBER(v,d) DUK_DBLUNION_SET_DOUBLE((v), (d)) -#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) DUK_TVAL_SET_NUMBER((v), (d)) -#define DUK_TVAL_SET_DOUBLE(v,d) DUK_TVAL_SET_NUMBER((v), (d)) +#define DUK_TVAL_SET_DOUBLE(v,d) do { \ + duk_double_t duk__dblval; \ + duk__dblval = (d); \ + DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \ + DUK_DBLUNION_SET_DOUBLE((v), duk__dblval); \ + } while (0) +#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) DUK_TVAL_SET_DOUBLE((v), (d)) +#define DUK_TVAL_SET_NUMBER(v,d) DUK_TVAL_SET_DOUBLE((v), (d)) #define DUK_TVAL_CHKFAST_INPLACE(v) do { } while (0) #endif @@ -6349,8 +6344,7 @@ typedef union duk_double_union duk_tval; #define DUK_TVAL_GET_TAG(v) ((duk_small_uint_t) (v)->us[DUK_DBL_IDX_US0]) #define DUK_TVAL_IS_UNDEFINED(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_UNDEFINED) -#define DUK_TVAL_IS_UNDEFINED_ACTUAL(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_UNDEFINED_ACTUAL) -#define DUK_TVAL_IS_UNDEFINED_UNUSED(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_UNDEFINED_UNUSED) +#define DUK_TVAL_IS_UNUSED(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_UNUSED) #define DUK_TVAL_IS_NULL(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_NULL) #define DUK_TVAL_IS_BOOLEAN(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_BOOLEAN) #define DUK_TVAL_IS_BOOLEAN_TRUE(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_BOOLEAN_TRUE) @@ -6370,6 +6364,7 @@ typedef union duk_double_union duk_tval; #define DUK_TVAL_IS_DOUBLE(v) DUK_TVAL_IS_NUMBER((v)) #endif +/* This is performance critical because it appears in every DECREF. */ #define DUK_TVAL_IS_HEAP_ALLOCATED(v) (DUK_TVAL_GET_TAG((v)) >= DUK_TAG_STRING) #if defined(DUK_USE_FASTINT) @@ -6423,9 +6418,10 @@ struct duk_tval_struct { #define DUK_TAG_BOOLEAN 4 #define DUK_TAG_POINTER 5 #define DUK_TAG_LIGHTFUNC 6 -#define DUK_TAG_STRING 7 -#define DUK_TAG_OBJECT 8 -#define DUK_TAG_BUFFER 9 +#define DUK_TAG_UNUSED 7 /* marker; not actual tagged type */ +#define DUK_TAG_STRING 8 /* first heap allocated, match bit boundary */ +#define DUK_TAG_OBJECT 9 +#define DUK_TAG_BUFFER 10 /* DUK__TAG_NUMBER is intentionally first, as it is the default clause in code * to support the 8-byte representation. Further, it is a non-heap-allocated @@ -6434,14 +6430,12 @@ struct duk_tval_struct { */ /* setters */ -#define DUK_TVAL_SET_UNDEFINED_ACTUAL(tv) do { \ +#define DUK_TVAL_SET_UNDEFINED(tv) do { \ (tv)->t = DUK_TAG_UNDEFINED; \ - (tv)->v.i = 0; \ } while (0) -#define DUK_TVAL_SET_UNDEFINED_UNUSED(tv) do { \ - (tv)->t = DUK_TAG_UNDEFINED; \ - (tv)->v.i = 1; \ +#define DUK_TVAL_SET_UNUSED(tv) do { \ + (tv)->t = DUK_TAG_UNUSED; \ } while (0) #define DUK_TVAL_SET_NULL(tv) do { \ @@ -6488,7 +6482,7 @@ struct duk_tval_struct { (tv)->t = DUK__TAG_NUMBER; \ (tv)->v.d = (val); \ } while (0) -#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) \ +#define DUK_TVAL_SET_NUMBER_CHKFAST(tv,d) \ DUK_TVAL_SET_NUMBER((tv), (d)) #define DUK_TVAL_SET_DOUBLE(v,d) \ DUK_TVAL_SET_NUMBER((tv), (d)) @@ -6566,8 +6560,7 @@ struct duk_tval_struct { /* decoding */ #define DUK_TVAL_GET_TAG(tv) ((tv)->t) #define DUK_TVAL_IS_UNDEFINED(tv) ((tv)->t == DUK_TAG_UNDEFINED) -#define DUK_TVAL_IS_UNDEFINED_ACTUAL(tv) (((tv)->t == DUK_TAG_UNDEFINED) && ((tv)->v.i == 0)) -#define DUK_TVAL_IS_UNDEFINED_UNUSED(tv) (((tv)->t == DUK_TAG_UNDEFINED) && ((tv)->v.i != 0)) +#define DUK_TVAL_IS_UNUSED(tv) ((tv)->t == DUK_TAG_UNUSED) #define DUK_TVAL_IS_NULL(tv) ((tv)->t == DUK_TAG_NULL) #define DUK_TVAL_IS_BOOLEAN(tv) ((tv)->t == DUK_TAG_BOOLEAN) #define DUK_TVAL_IS_BOOLEAN_TRUE(tv) (((tv)->t == DUK_TAG_BOOLEAN) && ((tv)->v.i != 0)) @@ -6587,7 +6580,15 @@ struct duk_tval_struct { #define DUK_TVAL_IS_OBJECT(tv) ((tv)->t == DUK_TAG_OBJECT) #define DUK_TVAL_IS_BUFFER(tv) ((tv)->t == DUK_TAG_BUFFER) +/* This is performance critical because it's needed for every DECREF. + * Take advantage of the fact that the first heap allocated tag is 8, + * so that bit 3 is set for all heap allocated tags (and never set for + * non-heap-allocated tags). + */ +#if 0 #define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t >= DUK_TAG_STRING) +#endif +#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t & 0x08) #if defined(DUK_USE_FASTINT) #if 0 @@ -6987,6 +6988,250 @@ struct duk_heaphdr_string { } \ } while (0) +/* + * Macros to set a duk_tval and update refcount of the target (decref the + * old value and incref the new value if necessary). This is both performance + * and footprint critical; any changes made should be measured for size/speed. + */ + +#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_UNDEFINED(tv__dst); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_UNUSED(tv__dst); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_NULL(tv__dst); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_NUMBER_CHKFAST(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_NAN(tv__dst); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#if defined(DUK_USE_FASTINT) +#define DUK_TVAL_SET_FASTINT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_FASTINT(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#define DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_FASTINT_I32(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#define DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_FASTINT_U32(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) +#endif /* DUK_USE_FASTINT */ + +#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr,tvptr_dst,lf_v,lf_fp,lf_flags) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_STRING(tv__dst, (newval)); \ + DUK_HSTRING_INCREF((thr), (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \ + DUK_HOBJECT_INCREF((thr), (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \ + DUK_HBUFFER_INCREF((thr), (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_POINTER(tv__dst, (newval)); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +/* DUK_TVAL_SET_TVAL_UPDREF() is used a lot in executor, property lookups, + * etc, so it's very important for performance. + * + * NOTE: the source and destination duk_tval pointers may be the same, and + * the macros MUST deal with that correctly. + */ + +/* Original idiom used. */ +#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; duk_tval tv__tmp; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF((thr), tv__src); \ + DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ + } while (0) + +#if 0 /* XXX: to optimize and measure */ +/* Original idiom but with forced fast refcount macros. */ +#define DUK_TVAL_SET_TVAL_UPDREF_ALT0F(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; duk_tval tv__tmp; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF_FAST((thr), tv__src); \ + DUK_TVAL_DECREF_FAST((thr), &tv__tmp); /* side effects */ \ + } while (0) + +/* Use 'h__obj' temporary to avoid a full duk_tval copy. */ +#define DUK_TVAL_SET_TVAL_UPDREF_ALT1(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + if (DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst)) { \ + h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \ + DUK_ASSERT(h__obj != NULL); \ + } else { \ + h__obj = NULL; \ + } \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF((thr), tv__src); \ + if (h__obj != NULL) { \ + DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \ + } \ + } while (0) + +/* Use 'h__obj' temporary to avoid a full duk_tval copy. */ +#define DUK_TVAL_SET_TVAL_UPDREF_ALT1A(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + if (DUK_UNLIKELY(DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst))) { \ + h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \ + DUK_ASSERT(h__obj != NULL); \ + } else { \ + h__obj = NULL; \ + } \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF_FAST((thr), tv__src); \ + if (DUK_UNLIKELY(h__obj != NULL)) { \ + DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \ + } \ + } while (0) + +/* Avoid rechecking 'h__obj'. */ +#define DUK_TVAL_SET_TVAL_UPDREF_ALT2(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + if (DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst)) { \ + h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \ + DUK_ASSERT(h__obj != NULL); \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF((thr), tv__src); \ + DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \ + } else { \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF((thr), tv__src); \ + } \ + } while (0) + +/* Avoid rechecking 'h__obj'. */ +#define DUK_TVAL_SET_TVAL_UPDREF_ALT3(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + if (DUK_UNLIKELY(DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst))) { \ + h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \ + DUK_ASSERT(h__obj != NULL); \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF_FAST((thr), tv__src); \ + DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \ + } else { \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_TVAL_INCREF_FAST((thr), tv__src); \ + } \ + } while (0) +#endif + +/* XXX: no optimized variants yet */ +#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0 +#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0 +#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0 +#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0 +#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0 +#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0 +#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0 +#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0 +#if defined(DUK_USE_FASTINT) +#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_FASTINT_UPDREF_ALT0 +#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0 +#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0 +#endif /* DUK_USE_FASTINT */ +#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0 +#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0 +#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0 +#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0 +#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0 + +#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT) +/* Optimized for speed. */ +#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#else +/* Optimized for size. */ +#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#endif + #else /* DUK_USE_REFERENCE_COUNTING */ #define DUK_TVAL_INCREF_FAST(thr,v) do {} while (0) /* nop */ @@ -7018,6 +7263,128 @@ struct duk_heaphdr_string { #define DUK_HOBJECT_INCREF_ALLOWNULL(thr,h) do {} while (0) /* nop */ #define DUK_HOBJECT_DECREF_ALLOWNULL(thr,h) do {} while (0) /* nop */ +#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_UNDEFINED(tv__dst); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_UNUSED(tv__dst); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_NULL(tv__dst); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) +#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_NUMBER_CHKFAST(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) +#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) +#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr,tvptr_dst) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_NAN(tv__dst); \ + DUK_UNREF((thr)); \ + } while (0) +#if defined(DUK_USE_FASTINT) +#define DUK_TVAL_SET_FASTINT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_FASTINT(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) +#define DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_FASTINT_I32(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) +#define DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_FASTINT_U32(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) +#endif /* DUK_USE_FASTINT */ + +#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr,tvptr_dst,lf_v,lf_fp,lf_flags) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_STRING(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \ + duk_tval *tv__dst; tv__dst = (tvptr_dst); \ + DUK_TVAL_SET_POINTER(tv__dst, (newval)); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr,tvptr_dst,tvptr_src) do { \ + duk_tval *tv__dst, *tv__src; \ + tv__dst = (tvptr_dst); tv__src = (tvptr_src); \ + DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ + DUK_UNREF((thr)); \ + } while (0) + +#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0 +#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0 +#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0 +#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0 +#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0 +#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0 +#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0 +#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0 +#if defined(DUK_USE_FASTINT) +#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_FASTINT_UPDREF_ALT0 +#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0 +#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0 +#endif /* DUK_USE_FASTINT */ +#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0 +#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0 +#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0 +#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0 +#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0 + +#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0 +#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0 + #endif /* DUK_USE_REFERENCE_COUNTING */ #endif /* DUK_HEAPHDR_H_INCLUDED */ @@ -7122,10 +7489,16 @@ DUK_INTERNAL_DECL void *duk_get_voidptr(duk_context *ctx, duk_idx_t index); #endif DUK_INTERNAL_DECL duk_hstring *duk_to_hstring(duk_context *ctx, duk_idx_t index); +#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */ +DUK_INTERNAL_DECL duk_hstring *duk_safe_to_hstring(duk_context *ctx, duk_idx_t index); +#endif + DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped_raw(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped); /* out_clamped=NULL, RangeError if outside range */ DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval); DUK_INTERNAL_DECL duk_int_t duk_to_int_check_range(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval); +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL_DECL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index); +#endif DUK_INTERNAL_DECL duk_hstring *duk_require_hstring(duk_context *ctx, duk_idx_t index); DUK_INTERNAL_DECL duk_hobject *duk_require_hobject(duk_context *ctx, duk_idx_t index); @@ -7142,9 +7515,6 @@ DUK_INTERNAL_DECL duk_hnativefunction *duk_require_hnativefunction(duk_context * DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_or_lfunc(duk_context *ctx, duk_idx_t index); DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_or_lfunc_coerce(duk_context *ctx, duk_idx_t index); -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_INTERNAL_DECL void duk_push_unused(duk_context *ctx); -#endif DUK_INTERNAL_DECL void duk_push_hstring(duk_context *ctx, duk_hstring *h); DUK_INTERNAL_DECL void duk_push_hstring_stridx(duk_context *ctx, duk_small_int_t stridx); DUK_INTERNAL_DECL void duk_push_hobject(duk_context *ctx, duk_hobject *h); @@ -7166,7 +7536,7 @@ DUK_INTERNAL_DECL void duk_push_c_function_noconstruct_noexotic(duk_context *ctx DUK_INTERNAL_DECL void duk_push_string_funcptr(duk_context *ctx, duk_uint8_t *ptr, duk_size_t sz); DUK_INTERNAL_DECL void duk_push_lightfunc_name(duk_context *ctx, duk_tval *tv); DUK_INTERNAL_DECL void duk_push_lightfunc_tostring(duk_context *ctx, duk_tval *tv); -DUK_INTERNAL_DECL duk_hbufferobject *duk_push_bufferobject(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx); +DUK_INTERNAL_DECL duk_hbufferobject *duk_push_bufferobject_raw(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx); DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [] -> [val] */ DUK_INTERNAL_DECL duk_bool_t duk_put_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [val] -> [] */ @@ -7436,7 +7806,7 @@ DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr #define DUK_HOBJECT_FLAG_THREAD DUK_HEAPHDR_USER_FLAG(7) /* object is a thread (duk_hthread) */ #define DUK_HOBJECT_FLAG_ARRAY_PART DUK_HEAPHDR_USER_FLAG(8) /* object has an array part (a_size may still be 0) */ #define DUK_HOBJECT_FLAG_STRICT DUK_HEAPHDR_USER_FLAG(9) /* function: function object is strict */ -#define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tailcalled */ +#define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tail called */ #define DUK_HOBJECT_FLAG_NEWENV DUK_HEAPHDR_USER_FLAG(11) /* function: create new environment when called (see duk_hcompiledfunction) */ #define DUK_HOBJECT_FLAG_NAMEBINDING DUK_HEAPHDR_USER_FLAG(12) /* function: create binding for func name (function templates only, used for named function expressions) */ #define DUK_HOBJECT_FLAG_CREATEARGS DUK_HEAPHDR_USER_FLAG(13) /* function: create an arguments object on function call */ @@ -7799,8 +8169,8 @@ DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr (set_e_k) = (duk_hstring **) (void *) ((set_e_pv) + (n_ent)); \ (set_e_f) = (duk_uint8_t *) (void *) ((set_e_k) + (n_ent)); \ (set_a) = (duk_tval *) (void *) (((duk_uint8_t *) (set_e_f)) + \ - sizeof(duk_uint8_t) * (n_ent) + \ - DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \ + sizeof(duk_uint8_t) * (n_ent) + \ + DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \ (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \ } while (0) #elif defined(DUK_USE_HOBJECT_LAYOUT_3) @@ -8008,7 +8378,7 @@ DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr #endif /* note: this updates refcounts */ -#define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr,h,p) duk_hobject_set_prototype((thr), (h), (p)) +#define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr,h,p) duk_hobject_set_prototype_updref((thr), (h), (p)) /* * Resizing and hash behavior @@ -8296,7 +8666,7 @@ DUK_INTERNAL_DECL duk_ret_t duk_hobject_get_enumerated_keys(duk_context *ctx, du DUK_INTERNAL_DECL duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t get_value); /* macros */ -DUK_INTERNAL_DECL void duk_hobject_set_prototype(duk_hthread *thr, duk_hobject *h, duk_hobject *p); +DUK_INTERNAL_DECL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p); /* finalization */ DUK_INTERNAL_DECL void duk_hobject_run_finalizer(duk_hthread *thr, duk_hobject *obj); @@ -8625,8 +8995,9 @@ struct duk_hnativefunction { } else { \ /* No assertions for offset or length; in particular, \ * it's OK for length to be longer than underlying \ - * buffer. \ + * buffer. Just ensure they don't wrap when added. \ */ \ + DUK_ASSERT((h)->offset + (h)->length >= (h)->offset); \ } \ } while (0) @@ -8710,7 +9081,9 @@ struct duk_hbufferobject { duk_uint8_t is_view; }; +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL_DECL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len); +#endif DUK_INTERNAL_DECL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size); DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size); @@ -8767,7 +9140,7 @@ DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_h */ #define DUK_ACT_FLAG_STRICT (1 << 0) /* function executes in strict mode */ -#define DUK_ACT_FLAG_TAILCALLED (1 << 1) /* activation has tailcalled one or more times */ +#define DUK_ACT_FLAG_TAILCALLED (1 << 1) /* activation has tail called one or more times */ #define DUK_ACT_FLAG_CONSTRUCT (1 << 2) /* function executes as a constructor (called via "new") */ #define DUK_ACT_FLAG_PREVENT_YIELD (1 << 3) /* activation prevents yield (native call or "new") */ #define DUK_ACT_FLAG_DIRECT_EVAL (1 << 4) /* activation is a direct eval call */ @@ -8873,6 +9246,13 @@ DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_h * diagnose behavior so it's worth checking even when the check is not 100%. */ +#if defined(DUK_USE_PREFER_SIZE) +#define DUK_ASSERT_CTX_VSSIZE(ctx) /*nop*/ +#else +#define DUK_ASSERT_CTX_VSSIZE(ctx) \ + DUK_ASSERT((duk_size_t) (((duk_hthread *) (ctx))->valstack_end - ((duk_hthread *) (ctx))->valstack) == \ + ((duk_hthread *) (ctx))->valstack_size) +#endif #define DUK_ASSERT_CTX_VALID(ctx) do { \ DUK_ASSERT((ctx) != NULL); \ DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) (ctx)) == DUK_HTYPE_OBJECT); \ @@ -8883,6 +9263,8 @@ DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_h DUK_ASSERT(((duk_hthread *) (ctx))->valstack_end >= ((duk_hthread *) (ctx))->valstack); \ DUK_ASSERT(((duk_hthread *) (ctx))->valstack_top >= ((duk_hthread *) (ctx))->valstack); \ DUK_ASSERT(((duk_hthread *) (ctx))->valstack_top >= ((duk_hthread *) (ctx))->valstack_bottom); \ + DUK_ASSERT(((duk_hthread *) (ctx))->valstack_end >= ((duk_hthread *) (ctx))->valstack_top); \ + DUK_ASSERT_CTX_VSSIZE((ctx)); \ } while (0) /* @@ -8906,11 +9288,11 @@ struct duk_activation { duk_hobject *prev_caller; #endif - duk_small_uint_t flags; - duk_uint32_t pc; /* next instruction to execute */ + duk_instr_t *curr_pc; /* next instruction to execute (points to 'func' bytecode, stable pointer), NULL for native calls */ #if defined(DUK_USE_DEBUGGER_SUPPORT) duk_uint32_t prev_line; /* needed for stepping */ #endif + duk_small_uint_t flags; /* idx_bottom and idx_retval are only used for book-keeping of * Ecmascript-initiated calls, to allow returning to an Ecmascript @@ -8949,56 +9331,71 @@ struct duk_activation { struct duk_catcher { duk_hstring *h_varname; /* borrowed reference to catch variable name (or NULL if none) */ /* (reference is valid as long activation exists) */ + duk_instr_t *pc_base; /* resume execution from pc_base or pc_base+1 (points to 'func' bytecode, stable pointer) */ duk_size_t callstack_index; /* callstack index of related activation */ duk_size_t idx_base; /* idx_base and idx_base+1 get completion value and type */ - duk_uint32_t pc_base; /* resume execution from pc_base or pc_base+1 */ duk_uint32_t flags; /* type and control flags, label number */ }; struct duk_hthread { - /* shared object part */ + /* Shared object part */ duk_hobject obj; - /* backpointers */ + /* Pointer to bytecode executor's 'curr_pc' variable. Used to copy + * the current PC back into the topmost activation when activation + * state is about to change (or "syncing" is otherwise needed). This + * is rather awkward but important for performance, see execution.rst. + */ + duk_instr_t **ptr_curr_pc; + + /* Backpointers. */ duk_heap *heap; - /* current strictness flag: affects API calls */ + /* Current strictness flag: affects API calls. */ duk_uint8_t strict; + + /* Thread state. */ duk_uint8_t state; duk_uint8_t unused1; duk_uint8_t unused2; - /* sanity limits */ + /* Sanity limits for stack sizes. */ duk_size_t valstack_max; duk_size_t callstack_max; duk_size_t catchstack_max; - /* XXX: valstack, callstack, and catchstack are currently assumed + /* XXX: Valstack, callstack, and catchstack are currently assumed * to have non-NULL pointers. Relaxing this would not lead to big * benefits (except perhaps for terminated threads). */ - /* value stack: these are expressed as pointers for faster stack manipulation */ + /* Value stack: these are expressed as pointers for faster stack manipulation. + * [valstack,valstack_top[ is GC-reachable, [valstack_top,valstack_end[ is + * not GC-reachable but kept initialized as 'undefined'. + */ duk_tval *valstack; /* start of valstack allocation */ duk_tval *valstack_end; /* end of valstack allocation (exclusive) */ duk_tval *valstack_bottom; /* bottom of current frame */ duk_tval *valstack_top; /* top of current frame (exclusive) */ +#if !defined(DUK_USE_PREFER_SIZE) + duk_size_t valstack_size; /* cached: valstack_end - valstack (in entries, not bytes) */ +#endif - /* call stack */ + /* Call stack. [0,callstack_top[ is GC reachable. */ duk_activation *callstack; duk_size_t callstack_size; /* allocation size */ duk_size_t callstack_top; /* next to use, highest used is top - 1 */ duk_size_t callstack_preventcount; /* number of activation records in callstack preventing a yield */ - /* catch stack */ + /* Catch stack. [0,catchstack_top[ is GC reachable. */ duk_catcher *catchstack; duk_size_t catchstack_size; /* allocation size */ duk_size_t catchstack_top; /* next to use, highest used is top - 1 */ - /* yield/resume book-keeping */ + /* Yield/resume book-keeping. */ duk_hthread *resumer; /* who resumed us (if any) */ - /* current compiler state (if any), used for augmenting SyntaxErrors */ + /* Current compiler state (if any), used for augmenting SyntaxErrors. */ duk_compiler_ctx *compile_ctx; #if defined(DUK_USE_INTERRUPT_COUNTER) @@ -9022,7 +9419,7 @@ struct duk_hthread { */ duk_hobject *builtins[DUK_NUM_BUILTINS]; - /* convenience copies from heap/vm for faster access */ + /* Convenience copies from heap/vm for faster access. */ #if defined(DUK_USE_HEAPPTR16) duk_uint16_t *strs16; #else @@ -9051,6 +9448,13 @@ DUK_INTERNAL_DECL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud); DUK_INTERNAL_DECL void *duk_hthread_get_callstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */ +#if defined(DUK_USE_DEBUGGER_SUPPORT) +DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act); +#endif +DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act); +DUK_INTERNAL_DECL void duk_hthread_sync_currpc(duk_hthread *thr); +DUK_INTERNAL_DECL void duk_hthread_sync_and_null_currpc(duk_hthread *thr); + #endif /* DUK_HTHREAD_H_INCLUDED */ #line 1 "duk_hbuffer.h" /* @@ -9069,17 +9473,23 @@ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud) /* * Flags + * + * Fixed buffer: 0 + * Dynamic buffer: DUK_HBUFFER_FLAG_DYNAMIC + * External buffer: DUK_HBUFFER_FLAG_DYNAMIC | DUK_HBUFFER_FLAG_EXTERNAL */ -#define DUK_HBUFFER_FLAG_DYNAMIC DUK_HEAPHDR_USER_FLAG(0) /* buffer is resizable */ +#define DUK_HBUFFER_FLAG_DYNAMIC DUK_HEAPHDR_USER_FLAG(0) /* buffer is behind a pointer, dynamic or external */ +#define DUK_HBUFFER_FLAG_EXTERNAL DUK_HEAPHDR_USER_FLAG(1) /* buffer pointer is to an externally allocated buffer */ #define DUK_HBUFFER_HAS_DYNAMIC(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC) +#define DUK_HBUFFER_HAS_EXTERNAL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL) #define DUK_HBUFFER_SET_DYNAMIC(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC) +#define DUK_HBUFFER_SET_EXTERNAL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL) #define DUK_HBUFFER_CLEAR_DYNAMIC(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC) - -#define DUK_HBUFFER_FIXED_GET_DATA_PTR(heap,x) ((duk_uint8_t *) (((duk_hbuffer_fixed *) (x)) + 1)) +#define DUK_HBUFFER_CLEAR_EXTERNAL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL) /* * Misc defines @@ -9140,6 +9550,11 @@ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud) #define DUK_HBUFFER_DYNAMIC_ADD_SIZE(x,dv) DUK_HBUFFER_ADD_SIZE((duk_hbuffer *) (x), (dv)) #define DUK_HBUFFER_DYNAMIC_SUB_SIZE(x,dv) DUK_HBUFFER_SUB_SIZE((duk_hbuffer *) (x), (dv)) +#define DUK_HBUFFER_EXTERNAL_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x)) +#define DUK_HBUFFER_EXTERNAL_SET_SIZE(x,v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x), (v)) + +#define DUK_HBUFFER_FIXED_GET_DATA_PTR(heap,x) ((duk_uint8_t *) (((duk_hbuffer_fixed *) (x)) + 1)) + #if defined(DUK_USE_HEAPPTR16) #define DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap,x) \ ((void *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (x))->h_extra16)) @@ -9159,19 +9574,58 @@ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud) } while (0) #endif -/* Gets the actual buffer contents which matches the current allocation size - * (may be NULL for zero size dynamic buffer). +/* No pointer compression because pointer is potentially outside of + * Duktape heap. + */ +#if defined(DUK_USE_HEAPPTR16) +#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap,x) \ + ((void *) (x)->curr_alloc) +#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap,x,v) do { \ + (x)->curr_alloc = (void *) (v); \ + } while (0) +#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap,x) do { \ + (x)->curr_alloc = (void *) NULL; \ + } while (0) +#else +#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap,x) \ + ((void *) (x)->curr_alloc) +#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap,x,v) do { \ + (x)->curr_alloc = (void *) (v); \ + } while (0) +#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap,x) do { \ + (x)->curr_alloc = (void *) NULL; \ + } while (0) +#endif + +/* Get a pointer to the current buffer contents (matching current allocation + * size). May be NULL for zero size dynamic/external buffer. + */ +#if defined(DUK_USE_HEAPPTR16) +#define DUK_HBUFFER_GET_DATA_PTR(heap,x) ( \ + DUK_HBUFFER_HAS_DYNAMIC((x)) ? \ + ( \ + DUK_HBUFFER_HAS_EXTERNAL((x)) ? \ + DUK_HBUFFER_EXTERNAL_GET_DATA_PTR((heap), (duk_hbuffer_external *) (x)) : \ + DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) \ + ) : \ + DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (x)) \ + ) +#else +/* Without heap pointer compression duk_hbuffer_dynamic and duk_hbuffer_external + * have the same layout so checking for fixed vs. dynamic (or external) is enough. */ #define DUK_HBUFFER_GET_DATA_PTR(heap,x) ( \ DUK_HBUFFER_HAS_DYNAMIC((x)) ? \ DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) : \ DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (x)) \ ) +#endif /* * Structs */ +/* Shared prefix for all buffer types. */ struct duk_hbuffer { duk_heaphdr hdr; @@ -9199,6 +9653,11 @@ struct duk_hbuffer { * - a "void *" pointing to the current allocation * - a duk_size_t indicating the full allocated size (always >= 'size') * + * If DUK_HBUFFER_FLAG_EXTERNAL is set, the buffer has been allocated + * by user code, so that Duktape won't be able to resize it and won't + * free it. This allows buffers to point to e.g. an externally + * allocated structure such as a frame buffer. + * * Unlike strings, no terminator byte (NUL) is guaranteed after the * data. This would be convenient, but would pad aligned user buffers * unnecessarily upwards in size. For instance, if user code requested @@ -9207,6 +9666,9 @@ struct duk_hbuffer { */ }; +/* Fixed buffer; data follows struct, with proper alignment guaranteed by + * struct size. + */ #if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_MSVC_PRAGMA) #pragma pack(push, 8) #endif @@ -9260,6 +9722,10 @@ __attribute__ ((aligned (8))) #pragma pack(pop) #endif +/* Dynamic buffer with 'curr_alloc' pointing to a dynamic area allocated using + * heap allocation primitives. Also used for external buffers when low memory + * options are not used. + */ struct duk_hbuffer_dynamic { duk_heaphdr hdr; @@ -9285,11 +9751,30 @@ struct duk_hbuffer_dynamic { */ }; +/* External buffer with 'curr_alloc' managed by user code and pointing to an + * arbitrary address. When heap pointer compression is not used, this struct + * has the same layout as duk_hbuffer_dynamic. + */ +struct duk_hbuffer_external { + duk_heaphdr hdr; + +#if defined(DUK_USE_BUFLEN16) + /* Stored in duk_heaphdr unused flags. */ +#else + duk_size_t size; +#endif + + /* Cannot be compressed as a heap pointer because may point to + * an arbitrary address. + */ + void *curr_alloc; /* may be NULL if alloc_size == 0 */ +}; + /* * Prototypes */ -DUK_INTERNAL_DECL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags); +DUK_INTERNAL_DECL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata); DUK_INTERNAL_DECL void *duk_hbuffer_get_dynalloc_ptr(duk_heap *heap, void *ud); /* indirect allocs */ /* dynamic buffer ops */ @@ -9351,13 +9836,13 @@ DUK_INTERNAL_DECL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic * */ #define DUK_LJ_TYPE_UNKNOWN 0 /* unused */ -#define DUK_LJ_TYPE_RETURN 1 /* value1 -> return value */ -#define DUK_LJ_TYPE_THROW 2 /* value1 -> error object */ -#define DUK_LJ_TYPE_BREAK 3 /* value1 -> label number */ -#define DUK_LJ_TYPE_CONTINUE 4 /* value1 -> label number */ -#define DUK_LJ_TYPE_YIELD 5 /* value1 -> yield value, iserror -> error / normal */ -#define DUK_LJ_TYPE_RESUME 6 /* value1 -> resume value, value2 -> resumee thread, iserror -> error/normal */ -#define DUK_LJ_TYPE_NORMAL 7 /* pseudo-type to indicate a normal continuation (for 'finally' rethrowing) */ +#define DUK_LJ_TYPE_THROW 1 /* value1 -> error object */ +#define DUK_LJ_TYPE_YIELD 2 /* value1 -> yield value, iserror -> error / normal */ +#define DUK_LJ_TYPE_RESUME 3 /* value1 -> resume value, value2 -> resumee thread, iserror -> error/normal */ +#define DUK_LJ_TYPE_BREAK 4 /* value1 -> label number, pseudo-type to indicate a break continuation (for ENDFIN) */ +#define DUK_LJ_TYPE_CONTINUE 5 /* value1 -> label number, pseudo-type to indicate a continue continuation (for ENDFIN) */ +#define DUK_LJ_TYPE_RETURN 6 /* value1 -> return value, pseudo-type to indicate a return continuation (for ENDFIN) */ +#define DUK_LJ_TYPE_NORMAL 7 /* no value, pseudo-type to indicate a normal continuation (for ENDFIN) */ /* * Mark-and-sweep flags @@ -9392,31 +9877,6 @@ DUK_INTERNAL_DECL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic * * Other heap related defines */ -/* Maximum duk_handle_call / duk_handle_safe_call depth. Note that this - * does not limit bytecode executor internal call depth at all (e.g. - * for Ecmascript-to-Ecmascript calls, thread yields/resumes, etc). - * There is a separate callstack depth limit for threads. - */ - -#if defined(DUK_USE_DEEP_C_STACK) -#define DUK_HEAP_DEFAULT_CALL_RECURSION_LIMIT 1000 /* assuming 0.5 kB between calls, about 500kB of stack */ -#else -#define DUK_HEAP_DEFAULT_CALL_RECURSION_LIMIT 60 /* assuming 0.5 kB between calls, about 30kB of stack */ -#endif - -/* Mark-and-sweep C recursion depth for marking phase; if reached, - * mark object as a TEMPROOT and use multi-pass marking. - */ -#if defined(DUK_USE_MARK_AND_SWEEP) -#if defined(DUK_USE_GC_TORTURE) -#define DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT 3 -#elif defined(DUK_USE_DEEP_C_STACK) -#define DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT 256 -#else -#define DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT 32 -#endif -#endif - /* Mark-and-sweep interval is relative to combined count of objects and * strings kept in the heap during the latest mark-and-sweep pass. * Fixed point .8 multiplier and .0 adder. Trigger count (interval) is @@ -9758,6 +10218,7 @@ struct duk_heap { duk_bool_t dbg_processing; /* currently processing messages or breakpoints: don't enter message processing recursively (e.g. no breakpoints when processing debugger eval) */ duk_bool_t dbg_paused; /* currently paused: talk with debug client until step/resume */ duk_bool_t dbg_state_dirty; /* resend state next time executor is about to run */ + duk_bool_t dbg_force_restart; /* force executor restart to recheck breakpoints; used to handle function returns (see GH-303) */ duk_small_uint_t dbg_step_type; /* step type: none, step into, step over, step out */ duk_hthread *dbg_step_thread; /* borrowed; NULL if no step state (NULLed in unwind) */ duk_size_t dbg_step_csindex; /* callstack index */ @@ -9838,7 +10299,9 @@ DUK_INTERNAL_DECL duk_hstring *duk_heap_string_lookup_u32(duk_heap *heap, duk_ui #endif DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_u32(duk_heap *heap, duk_uint32_t val); DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_u32_checked(duk_hthread *thr, duk_uint32_t val); +#if defined(DUK_USE_REFERENCE_COUNTING) DUK_INTERNAL_DECL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h); +#endif #if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_MS_STRINGTABLE_RESIZE) DUK_INTERNAL_DECL void duk_heap_force_strtab_resize(duk_heap *heap); #endif @@ -9917,6 +10380,7 @@ DUK_INTERNAL_DECL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uin #define DUK_DBG_CMD_PRINT 0x02 #define DUK_DBG_CMD_ALERT 0x03 #define DUK_DBG_CMD_LOG 0x04 +#define DUK_DBG_CMD_THROW 0x05 /* Initiated by debug client */ #define DUK_DBG_CMD_BASICINFO 0x10 @@ -9984,7 +10448,9 @@ DUK_INTERNAL_DECL void duk_debug_write_eom(duk_hthread *thr); DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr); DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr); +DUK_INTERNAL_DECL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal); +DUK_INTERNAL_DECL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc); DUK_INTERNAL_DECL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block); DUK_INTERNAL_DECL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr, duk_hstring *filename, duk_uint32_t line); @@ -10365,9 +10831,9 @@ DUK_INTERNAL_DECL duk_bool_t duk_fb_is_full(duk_fixedbuffer *fb); #if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_PACKED_TVAL) #define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) do { \ - duk_double_union assert_tmp_du; \ - assert_tmp_du.d = (dval); \ - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&assert_tmp_du)); \ + duk_double_union duk__assert_tmp_du; \ + duk__assert_tmp_du.d = (dval); \ + DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&duk__assert_tmp_du)); \ } while (0) #else #define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) /* nop */ @@ -10666,6 +11132,13 @@ extern const duk_uint8_t duk_unicode_idp_m_ids_noabmp[348]; extern const duk_uint8_t duk_unicode_caseconv_uc[1288]; extern const duk_uint8_t duk_unicode_caseconv_lc[616]; +/* FIXME: CONDITIONAL */ +/* + * Automatically generated by extract_caseconv.py, do not edit! + */ + +extern const duk_uint16_t duk_unicode_re_canon_lookup[65536]; + /* * Extern */ @@ -10712,15 +11185,6 @@ DUK_INTERNAL_DECL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t cp) #ifndef DUK_JSON_H_INCLUDED #define DUK_JSON_H_INCLUDED -/* Object/array recursion limit (to protect C stack) */ -#if defined(DUK_USE_DEEP_C_STACK) -#define DUK_JSON_ENC_RECURSION_LIMIT 1000 -#define DUK_JSON_DEC_RECURSION_LIMIT 1000 -#else -#define DUK_JSON_ENC_RECURSION_LIMIT 100 -#define DUK_JSON_DEC_RECURSION_LIMIT 100 -#endif - /* Encoding/decoding flags */ #define DUK_JSON_FLAG_ASCII_ONLY (1 << 0) /* escape any non-ASCII characters */ #define DUK_JSON_FLAG_AVOID_KEY_QUOTES (1 << 1) /* avoid key quotes when key is an ASCII Identifier */ @@ -10798,7 +11262,7 @@ typedef struct { #define DUK_CALL_FLAG_IGNORE_RECLIMIT (1 << 1) /* duk_handle_call: call ignores C recursion limit (for errhandler calls) */ #define DUK_CALL_FLAG_CONSTRUCTOR_CALL (1 << 2) /* duk_handle_call: constructor call (i.e. called as 'new Foo()') */ #define DUK_CALL_FLAG_IS_RESUME (1 << 3) /* duk_handle_ecma_call_setup: setup for a resume() */ -#define DUK_CALL_FLAG_IS_TAILCALL (1 << 4) /* duk_handle_ecma_call_setup: setup for a tailcall */ +#define DUK_CALL_FLAG_IS_TAILCALL (1 << 4) /* duk_handle_ecma_call_setup: setup for a tail call */ #define DUK_CALL_FLAG_DIRECT_EVAL (1 << 5) /* call is a direct eval call */ /* Flags for duk_js_equals_helper(). */ @@ -11252,7 +11716,7 @@ DUK_INTERNAL const char *duk_str_buffer_too_long = "buffer too long"; DUK_INTERNAL const char *duk_str_sprintf_too_long = "sprintf message too long"; DUK_INTERNAL const char *duk_str_alloc_failed = "alloc failed"; DUK_INTERNAL const char *duk_str_pop_too_many = "attempt to pop too many entries"; -DUK_INTERNAL const char *duk_str_buffer_not_dynamic = "buffer is not dynamic"; +DUK_INTERNAL const char *duk_str_wrong_buffer_type = "wrong buffer type"; DUK_INTERNAL const char *duk_str_failed_to_extend_valstack = "failed to extend valstack"; DUK_INTERNAL const char *duk_str_encode_failed = "encode failed"; DUK_INTERNAL const char *duk_str_decode_failed = "decode failed"; @@ -11866,7 +12330,7 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = { 156,80,0,70,82,113,64,1,89,41,197,0,6,100,39,20,0,29,142,156,80,0,134,50, 98,243,21,53,121,136,160,144,0,22,26,120,24,73,197,0,9,96,167,20,0,41,128, 156,80,0,181,250,113,64,3,1,255,254,0,81,20,100,47,145,216,23,255,240,0,11, -255,248,0,3,255,252,81,252,0,0,0,0,8,1,220,68,0,129,167,1,26,144,9,165,0, +255,248,0,3,255,252,81,252,0,0,0,0,8,4,252,68,0,129,167,1,26,144,9,165,0, 26,177,199,197,132,30,147,16,120,86,65,217,80,240,232,164,120,114,80,60,52, 39,32,84,223,192,15,59,30,129,156,115,6,81,160,7,253,40,0,5,81,252,0,1,255, 78,0,84,113,96,128,0,209,69,128,21,87,240,0,7,253,72,1,81,221,66,0,3,69, @@ -11898,16 +12362,90 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = { 106,0, }; #ifdef DUK_USE_BUILTIN_INITJS -DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = { -40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116, -105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101, -102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97, -108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117, -109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98, -108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99, -108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34, -41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41, -125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0, +DUK_INTERNAL const duk_uint8_t duk_initjs_data[1757] = { +47,42,10,32,42,32,32,73,110,105,116,32,99,111,100,101,32,102,111,114,32, +108,101,103,97,99,121,32,99,111,109,112,97,116,105,98,105,108,105,116,121, +46,10,32,42,10,32,42,32,32,67,111,109,112,97,116,105,98,105,108,105,116, +121,32,112,114,111,112,101,114,116,105,101,115,32,47,32,119,114,97,112,112, +101,114,32,102,117,110,99,116,105,111,110,115,32,104,101,114,101,32,97,108, +108,111,119,32,68,117,107,116,97,112,101,32,116,111,32,114,101,109,97,105, +110,10,32,42,32,32,99,111,109,112,97,116,105,98,108,101,32,102,111,114,32, +117,115,101,114,32,99,111,100,101,32,119,104,101,110,32,99,111,114,101,32, +102,101,97,116,117,114,101,115,32,97,114,101,32,99,104,97,110,103,101,100, +44,32,119,105,116,104,111,117,116,32,98,117,114,100,101,110,105,110,103,10, +32,42,32,32,116,104,101,32,109,97,105,110,32,67,32,99,111,100,101,32,119, +105,116,104,32,99,111,109,112,97,116,105,98,105,108,105,116,121,32,115,116, +117,102,102,46,10,32,42,10,32,42,32,32,84,104,105,115,32,102,105,108,101, +32,105,115,32,109,105,110,105,102,105,101,100,32,119,105,116,104,32,85,103, +108,105,102,121,74,83,32,111,114,32,116,104,101,32,99,108,111,115,117,114, +101,32,99,111,109,112,105,108,101,114,46,32,32,66,111,116,104,32,119,105, +108,108,10,32,42,32,32,114,101,110,97,109,101,32,118,97,114,105,97,98,108, +101,115,44,32,114,101,109,111,118,101,32,99,111,109,109,101,110,116,115,44, +32,97,110,100,32,97,114,101,32,99,108,101,118,101,114,32,101,110,111,117, +103,104,32,116,111,32,100,114,111,112,32,97,110,121,10,32,42,32,32,34,105, +102,32,40,102,97,108,115,101,41,32,123,32,46,46,46,32,125,34,32,98,108,111, +99,107,115,32,97,108,116,111,103,101,116,104,101,114,44,32,115,111,32,116, +104,97,116,39,115,32,97,110,32,101,102,102,101,99,116,105,118,101,32,119, +97,121,32,116,111,10,32,42,32,32,100,105,115,97,98,108,101,32,99,117,114, +114,101,110,116,108,121,32,117,110,110,101,101,100,101,100,32,99,111,100, +101,46,10,32,42,47,10,10,40,102,117,110,99,116,105,111,110,40,71,44,32,68, +41,32,123,10,32,32,32,32,39,117,115,101,32,115,116,114,105,99,116,39,59,10, +10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,101,102,40,111,98,106, +101,99,116,44,32,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32, +32,32,32,32,32,32,32,79,98,106,101,99,116,46,100,101,102,105,110,101,80, +114,111,112,101,114,116,121,40,111,98,106,101,99,116,44,32,110,97,109,101, +44,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,118,97,108,117,101,58,32, +118,97,108,117,101,44,10,32,32,32,32,32,32,32,32,32,32,32,32,119,114,105, +116,97,98,108,101,58,32,116,114,117,101,44,10,32,32,32,32,32,32,32,32,32, +32,32,32,101,110,117,109,101,114,97,98,108,101,58,32,102,97,108,115,101,44, +10,32,32,32,32,32,32,32,32,32,32,32,32,99,111,110,102,105,103,117,114,97, +98,108,101,58,32,116,114,117,101,10,32,32,32,32,32,32,32,32,125,41,59,10, +32,32,32,32,125,10,10,32,32,32,32,102,117,110,99,116,105,111,110,32,100, +101,102,68,40,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,32, +32,32,32,32,32,32,100,101,102,40,68,44,32,110,97,109,101,44,32,118,97,108, +117,101,41,59,10,32,32,32,32,125,10,10,32,32,32,32,47,47,32,67,111,109,112, +97,116,105,98,105,108,105,116,121,32,102,111,114,32,39,99,111,110,115,111, +108,101,46,108,111,103,39,46,10,32,32,32,32,105,102,32,40,102,97,108,115, +101,41,32,123,10,32,32,32,32,32,32,32,32,99,111,110,115,111,108,101,32,61, +32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,108,111,103,58,32,102,117, +110,99,116,105,111,110,40,41,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32, +32,32,32,32,112,114,105,110,116,40,65,114,114,97,121,46,112,114,111,116, +111,116,121,112,101,46,106,111,105,110,46,99,97,108,108,40,97,114,103,117, +109,101,110,116,115,44,32,39,32,39,41,41,59,10,32,32,32,32,32,32,32,32,32, +32,32,32,125,10,32,32,32,32,32,32,32,32,125,59,10,32,32,32,32,125,10,10,32, +32,32,32,47,47,32,68,117,107,116,97,112,101,46,108,105,110,101,40,41,32, +119,97,115,32,114,101,109,111,118,101,100,32,105,110,32,68,117,107,116,97, +112,101,32,48,46,49,49,46,48,44,32,104,101,114,101,39,115,32,97,110,32,101, +120,97,109,112,108,101,10,32,32,32,32,47,47,32,114,101,112,108,97,99,101, +109,101,110,116,32,117,115,101,114,32,99,111,100,101,32,99,111,117,108,100, +32,117,115,101,46,10,32,32,32,32,105,102,32,40,102,97,108,115,101,41,32, +123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,108,105,110,101, +39,44,32,102,117,110,99,116,105,111,110,32,40,41,32,123,10,32,32,32,32,32, +32,32,32,32,32,32,32,39,117,115,101,32,100,117,107,32,110,111,116,97,105, +108,39,59,10,10,32,32,32,32,32,32,32,32,32,32,32,32,47,42,32,84,97,105,108, +32,99,97,108,108,115,32,97,114,101,32,112,114,101,118,101,110,116,101,100, +32,116,111,32,101,110,115,117,114,101,32,99,97,108,108,105,110,103,32,97, +99,116,105,118,97,116,105,111,110,32,101,120,105,115,116,115,46,10,32,32, +32,32,32,32,32,32,32,32,32,32,32,42,32,67,97,108,108,32,115,116,97,99,107, +32,105,110,100,105,99,101,115,58,32,45,49,32,61,32,68,117,107,116,97,112, +101,46,97,99,116,44,32,45,50,32,61,32,103,101,116,67,117,114,114,101,110, +116,76,105,110,101,44,32,45,51,32,61,32,99,97,108,108,101,114,10,32,32,32, +32,32,32,32,32,32,32,32,32,32,42,47,10,10,32,32,32,32,32,32,32,32,32,32,32, +32,114,101,116,117,114,110,32,40,68,117,107,116,97,112,101,46,97,99,116,40, +45,51,41,32,124,124,32,123,125,41,46,108,105,110,101,78,117,109,98,101,114, +59,10,32,32,32,32,32,32,32,32,125,41,59,10,32,32,32,32,125,10,10,32,32,32, +32,47,47,32,76,111,103,103,101,114,32,111,98,106,101,99,116,32,102,111,114, +32,67,32,99,111,100,101,32,112,114,111,118,105,100,101,100,32,98,121,32, +105,110,105,116,32,99,111,100,101,32,110,111,119,46,10,32,32,32,32,105,102, +32,40,116,114,117,101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40, +68,46,76,111,103,103,101,114,44,32,39,99,108,111,103,39,44,32,110,101,119, +32,68,46,76,111,103,103,101,114,40,39,67,39,41,41,59,10,32,32,32,32,125,10, +10,32,32,32,32,47,47,32,84,114,97,99,107,105,110,103,32,116,97,98,108,101, +32,102,111,114,32,67,111,109,109,111,110,74,83,32,109,111,100,117,108,101, +32,108,111,97,100,105,110,103,46,10,32,32,32,32,105,102,32,40,116,114,117, +101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,109, +111,100,76,111,97,100,101,100,39,44,32,123,125,41,59,10,32,32,32,32,125,10, +125,41,40,116,104,105,115,44,32,68,117,107,116,97,112,101,41,59,10,0, }; #endif /* DUK_USE_BUILTIN_INITJS */ #elif defined(DUK_USE_DOUBLE_BE) @@ -12252,7 +12790,7 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = { 80,0,70,82,113,64,1,89,41,197,0,6,100,39,20,0,29,142,156,80,0,134,50,98, 243,21,53,121,136,160,144,0,22,26,120,24,73,197,0,9,96,167,20,0,41,128,156, 80,0,181,250,113,64,3,1,255,254,0,81,20,100,47,145,216,23,255,240,0,11,255, -248,0,3,255,252,81,252,4,12,65,216,0,0,0,0,0,129,167,1,26,144,9,165,0,26, +248,0,3,255,252,81,252,4,12,68,248,0,0,0,0,0,129,167,1,26,144,9,165,0,26, 177,199,197,132,30,147,16,120,86,65,217,80,240,232,164,120,114,80,60,52,39, 32,84,223,192,15,59,30,129,156,115,6,81,160,7,253,40,0,5,81,252,0,1,255,78, 0,84,113,96,128,0,209,69,128,21,87,240,0,7,253,72,1,81,221,66,0,3,69,117,0, @@ -12283,16 +12821,90 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = { 157,85,98,112,80,137,241,66,128,0,166,213,33,53,24,66,121,106,0, }; #ifdef DUK_USE_BUILTIN_INITJS -DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = { -40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116, -105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101, -102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97, -108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117, -109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98, -108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99, -108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34, -41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41, -125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0, +DUK_INTERNAL const duk_uint8_t duk_initjs_data[1757] = { +47,42,10,32,42,32,32,73,110,105,116,32,99,111,100,101,32,102,111,114,32, +108,101,103,97,99,121,32,99,111,109,112,97,116,105,98,105,108,105,116,121, +46,10,32,42,10,32,42,32,32,67,111,109,112,97,116,105,98,105,108,105,116, +121,32,112,114,111,112,101,114,116,105,101,115,32,47,32,119,114,97,112,112, +101,114,32,102,117,110,99,116,105,111,110,115,32,104,101,114,101,32,97,108, +108,111,119,32,68,117,107,116,97,112,101,32,116,111,32,114,101,109,97,105, +110,10,32,42,32,32,99,111,109,112,97,116,105,98,108,101,32,102,111,114,32, +117,115,101,114,32,99,111,100,101,32,119,104,101,110,32,99,111,114,101,32, +102,101,97,116,117,114,101,115,32,97,114,101,32,99,104,97,110,103,101,100, +44,32,119,105,116,104,111,117,116,32,98,117,114,100,101,110,105,110,103,10, +32,42,32,32,116,104,101,32,109,97,105,110,32,67,32,99,111,100,101,32,119, +105,116,104,32,99,111,109,112,97,116,105,98,105,108,105,116,121,32,115,116, +117,102,102,46,10,32,42,10,32,42,32,32,84,104,105,115,32,102,105,108,101, +32,105,115,32,109,105,110,105,102,105,101,100,32,119,105,116,104,32,85,103, +108,105,102,121,74,83,32,111,114,32,116,104,101,32,99,108,111,115,117,114, +101,32,99,111,109,112,105,108,101,114,46,32,32,66,111,116,104,32,119,105, +108,108,10,32,42,32,32,114,101,110,97,109,101,32,118,97,114,105,97,98,108, +101,115,44,32,114,101,109,111,118,101,32,99,111,109,109,101,110,116,115,44, +32,97,110,100,32,97,114,101,32,99,108,101,118,101,114,32,101,110,111,117, +103,104,32,116,111,32,100,114,111,112,32,97,110,121,10,32,42,32,32,34,105, +102,32,40,102,97,108,115,101,41,32,123,32,46,46,46,32,125,34,32,98,108,111, +99,107,115,32,97,108,116,111,103,101,116,104,101,114,44,32,115,111,32,116, +104,97,116,39,115,32,97,110,32,101,102,102,101,99,116,105,118,101,32,119, +97,121,32,116,111,10,32,42,32,32,100,105,115,97,98,108,101,32,99,117,114, +114,101,110,116,108,121,32,117,110,110,101,101,100,101,100,32,99,111,100, +101,46,10,32,42,47,10,10,40,102,117,110,99,116,105,111,110,40,71,44,32,68, +41,32,123,10,32,32,32,32,39,117,115,101,32,115,116,114,105,99,116,39,59,10, +10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,101,102,40,111,98,106, +101,99,116,44,32,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32, +32,32,32,32,32,32,32,79,98,106,101,99,116,46,100,101,102,105,110,101,80, +114,111,112,101,114,116,121,40,111,98,106,101,99,116,44,32,110,97,109,101, +44,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,118,97,108,117,101,58,32, +118,97,108,117,101,44,10,32,32,32,32,32,32,32,32,32,32,32,32,119,114,105, +116,97,98,108,101,58,32,116,114,117,101,44,10,32,32,32,32,32,32,32,32,32, +32,32,32,101,110,117,109,101,114,97,98,108,101,58,32,102,97,108,115,101,44, +10,32,32,32,32,32,32,32,32,32,32,32,32,99,111,110,102,105,103,117,114,97, +98,108,101,58,32,116,114,117,101,10,32,32,32,32,32,32,32,32,125,41,59,10, +32,32,32,32,125,10,10,32,32,32,32,102,117,110,99,116,105,111,110,32,100, +101,102,68,40,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,32, +32,32,32,32,32,32,100,101,102,40,68,44,32,110,97,109,101,44,32,118,97,108, +117,101,41,59,10,32,32,32,32,125,10,10,32,32,32,32,47,47,32,67,111,109,112, +97,116,105,98,105,108,105,116,121,32,102,111,114,32,39,99,111,110,115,111, +108,101,46,108,111,103,39,46,10,32,32,32,32,105,102,32,40,102,97,108,115, +101,41,32,123,10,32,32,32,32,32,32,32,32,99,111,110,115,111,108,101,32,61, +32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,108,111,103,58,32,102,117, +110,99,116,105,111,110,40,41,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32, +32,32,32,32,112,114,105,110,116,40,65,114,114,97,121,46,112,114,111,116, +111,116,121,112,101,46,106,111,105,110,46,99,97,108,108,40,97,114,103,117, +109,101,110,116,115,44,32,39,32,39,41,41,59,10,32,32,32,32,32,32,32,32,32, +32,32,32,125,10,32,32,32,32,32,32,32,32,125,59,10,32,32,32,32,125,10,10,32, +32,32,32,47,47,32,68,117,107,116,97,112,101,46,108,105,110,101,40,41,32, +119,97,115,32,114,101,109,111,118,101,100,32,105,110,32,68,117,107,116,97, +112,101,32,48,46,49,49,46,48,44,32,104,101,114,101,39,115,32,97,110,32,101, +120,97,109,112,108,101,10,32,32,32,32,47,47,32,114,101,112,108,97,99,101, +109,101,110,116,32,117,115,101,114,32,99,111,100,101,32,99,111,117,108,100, +32,117,115,101,46,10,32,32,32,32,105,102,32,40,102,97,108,115,101,41,32, +123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,108,105,110,101, +39,44,32,102,117,110,99,116,105,111,110,32,40,41,32,123,10,32,32,32,32,32, +32,32,32,32,32,32,32,39,117,115,101,32,100,117,107,32,110,111,116,97,105, +108,39,59,10,10,32,32,32,32,32,32,32,32,32,32,32,32,47,42,32,84,97,105,108, +32,99,97,108,108,115,32,97,114,101,32,112,114,101,118,101,110,116,101,100, +32,116,111,32,101,110,115,117,114,101,32,99,97,108,108,105,110,103,32,97, +99,116,105,118,97,116,105,111,110,32,101,120,105,115,116,115,46,10,32,32, +32,32,32,32,32,32,32,32,32,32,32,42,32,67,97,108,108,32,115,116,97,99,107, +32,105,110,100,105,99,101,115,58,32,45,49,32,61,32,68,117,107,116,97,112, +101,46,97,99,116,44,32,45,50,32,61,32,103,101,116,67,117,114,114,101,110, +116,76,105,110,101,44,32,45,51,32,61,32,99,97,108,108,101,114,10,32,32,32, +32,32,32,32,32,32,32,32,32,32,42,47,10,10,32,32,32,32,32,32,32,32,32,32,32, +32,114,101,116,117,114,110,32,40,68,117,107,116,97,112,101,46,97,99,116,40, +45,51,41,32,124,124,32,123,125,41,46,108,105,110,101,78,117,109,98,101,114, +59,10,32,32,32,32,32,32,32,32,125,41,59,10,32,32,32,32,125,10,10,32,32,32, +32,47,47,32,76,111,103,103,101,114,32,111,98,106,101,99,116,32,102,111,114, +32,67,32,99,111,100,101,32,112,114,111,118,105,100,101,100,32,98,121,32, +105,110,105,116,32,99,111,100,101,32,110,111,119,46,10,32,32,32,32,105,102, +32,40,116,114,117,101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40, +68,46,76,111,103,103,101,114,44,32,39,99,108,111,103,39,44,32,110,101,119, +32,68,46,76,111,103,103,101,114,40,39,67,39,41,41,59,10,32,32,32,32,125,10, +10,32,32,32,32,47,47,32,84,114,97,99,107,105,110,103,32,116,97,98,108,101, +32,102,111,114,32,67,111,109,109,111,110,74,83,32,109,111,100,117,108,101, +32,108,111,97,100,105,110,103,46,10,32,32,32,32,105,102,32,40,116,114,117, +101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,109, +111,100,76,111,97,100,101,100,39,44,32,123,125,41,59,10,32,32,32,32,125,10, +125,41,40,116,104,105,115,44,32,68,117,107,116,97,112,101,41,59,10,0, }; #endif /* DUK_USE_BUILTIN_INITJS */ #elif defined(DUK_USE_DOUBLE_ME) @@ -12637,7 +13249,7 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = { 156,80,0,70,82,113,64,1,89,41,197,0,6,100,39,20,0,29,142,156,80,0,134,50, 98,243,21,53,121,136,160,144,0,22,26,120,24,73,197,0,9,96,167,20,0,41,128, 156,80,0,181,250,113,64,3,1,255,254,0,81,20,100,47,145,216,23,255,240,0,11, -255,248,0,3,255,252,81,252,8,1,220,68,0,0,0,0,0,129,167,1,26,144,9,165,0, +255,248,0,3,255,252,81,252,8,4,252,68,0,0,0,0,0,129,167,1,26,144,9,165,0, 26,177,199,197,132,30,147,16,120,86,65,217,80,240,232,164,120,114,80,60,52, 39,32,84,223,192,15,59,30,129,156,115,6,81,160,7,253,40,0,5,81,252,0,1,255, 78,0,84,113,96,128,0,209,69,128,21,87,240,0,7,253,72,1,81,221,66,0,3,69, @@ -12669,16 +13281,90 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = { 106,0, }; #ifdef DUK_USE_BUILTIN_INITJS -DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = { -40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116, -105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101, -102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97, -108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117, -109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98, -108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99, -108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34, -41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41, -125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0, +DUK_INTERNAL const duk_uint8_t duk_initjs_data[1757] = { +47,42,10,32,42,32,32,73,110,105,116,32,99,111,100,101,32,102,111,114,32, +108,101,103,97,99,121,32,99,111,109,112,97,116,105,98,105,108,105,116,121, +46,10,32,42,10,32,42,32,32,67,111,109,112,97,116,105,98,105,108,105,116, +121,32,112,114,111,112,101,114,116,105,101,115,32,47,32,119,114,97,112,112, +101,114,32,102,117,110,99,116,105,111,110,115,32,104,101,114,101,32,97,108, +108,111,119,32,68,117,107,116,97,112,101,32,116,111,32,114,101,109,97,105, +110,10,32,42,32,32,99,111,109,112,97,116,105,98,108,101,32,102,111,114,32, +117,115,101,114,32,99,111,100,101,32,119,104,101,110,32,99,111,114,101,32, +102,101,97,116,117,114,101,115,32,97,114,101,32,99,104,97,110,103,101,100, +44,32,119,105,116,104,111,117,116,32,98,117,114,100,101,110,105,110,103,10, +32,42,32,32,116,104,101,32,109,97,105,110,32,67,32,99,111,100,101,32,119, +105,116,104,32,99,111,109,112,97,116,105,98,105,108,105,116,121,32,115,116, +117,102,102,46,10,32,42,10,32,42,32,32,84,104,105,115,32,102,105,108,101, +32,105,115,32,109,105,110,105,102,105,101,100,32,119,105,116,104,32,85,103, +108,105,102,121,74,83,32,111,114,32,116,104,101,32,99,108,111,115,117,114, +101,32,99,111,109,112,105,108,101,114,46,32,32,66,111,116,104,32,119,105, +108,108,10,32,42,32,32,114,101,110,97,109,101,32,118,97,114,105,97,98,108, +101,115,44,32,114,101,109,111,118,101,32,99,111,109,109,101,110,116,115,44, +32,97,110,100,32,97,114,101,32,99,108,101,118,101,114,32,101,110,111,117, +103,104,32,116,111,32,100,114,111,112,32,97,110,121,10,32,42,32,32,34,105, +102,32,40,102,97,108,115,101,41,32,123,32,46,46,46,32,125,34,32,98,108,111, +99,107,115,32,97,108,116,111,103,101,116,104,101,114,44,32,115,111,32,116, +104,97,116,39,115,32,97,110,32,101,102,102,101,99,116,105,118,101,32,119, +97,121,32,116,111,10,32,42,32,32,100,105,115,97,98,108,101,32,99,117,114, +114,101,110,116,108,121,32,117,110,110,101,101,100,101,100,32,99,111,100, +101,46,10,32,42,47,10,10,40,102,117,110,99,116,105,111,110,40,71,44,32,68, +41,32,123,10,32,32,32,32,39,117,115,101,32,115,116,114,105,99,116,39,59,10, +10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,101,102,40,111,98,106, +101,99,116,44,32,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32, +32,32,32,32,32,32,32,79,98,106,101,99,116,46,100,101,102,105,110,101,80, +114,111,112,101,114,116,121,40,111,98,106,101,99,116,44,32,110,97,109,101, +44,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,118,97,108,117,101,58,32, +118,97,108,117,101,44,10,32,32,32,32,32,32,32,32,32,32,32,32,119,114,105, +116,97,98,108,101,58,32,116,114,117,101,44,10,32,32,32,32,32,32,32,32,32, +32,32,32,101,110,117,109,101,114,97,98,108,101,58,32,102,97,108,115,101,44, +10,32,32,32,32,32,32,32,32,32,32,32,32,99,111,110,102,105,103,117,114,97, +98,108,101,58,32,116,114,117,101,10,32,32,32,32,32,32,32,32,125,41,59,10, +32,32,32,32,125,10,10,32,32,32,32,102,117,110,99,116,105,111,110,32,100, +101,102,68,40,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,32, +32,32,32,32,32,32,100,101,102,40,68,44,32,110,97,109,101,44,32,118,97,108, +117,101,41,59,10,32,32,32,32,125,10,10,32,32,32,32,47,47,32,67,111,109,112, +97,116,105,98,105,108,105,116,121,32,102,111,114,32,39,99,111,110,115,111, +108,101,46,108,111,103,39,46,10,32,32,32,32,105,102,32,40,102,97,108,115, +101,41,32,123,10,32,32,32,32,32,32,32,32,99,111,110,115,111,108,101,32,61, +32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,108,111,103,58,32,102,117, +110,99,116,105,111,110,40,41,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32, +32,32,32,32,112,114,105,110,116,40,65,114,114,97,121,46,112,114,111,116, +111,116,121,112,101,46,106,111,105,110,46,99,97,108,108,40,97,114,103,117, +109,101,110,116,115,44,32,39,32,39,41,41,59,10,32,32,32,32,32,32,32,32,32, +32,32,32,125,10,32,32,32,32,32,32,32,32,125,59,10,32,32,32,32,125,10,10,32, +32,32,32,47,47,32,68,117,107,116,97,112,101,46,108,105,110,101,40,41,32, +119,97,115,32,114,101,109,111,118,101,100,32,105,110,32,68,117,107,116,97, +112,101,32,48,46,49,49,46,48,44,32,104,101,114,101,39,115,32,97,110,32,101, +120,97,109,112,108,101,10,32,32,32,32,47,47,32,114,101,112,108,97,99,101, +109,101,110,116,32,117,115,101,114,32,99,111,100,101,32,99,111,117,108,100, +32,117,115,101,46,10,32,32,32,32,105,102,32,40,102,97,108,115,101,41,32, +123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,108,105,110,101, +39,44,32,102,117,110,99,116,105,111,110,32,40,41,32,123,10,32,32,32,32,32, +32,32,32,32,32,32,32,39,117,115,101,32,100,117,107,32,110,111,116,97,105, +108,39,59,10,10,32,32,32,32,32,32,32,32,32,32,32,32,47,42,32,84,97,105,108, +32,99,97,108,108,115,32,97,114,101,32,112,114,101,118,101,110,116,101,100, +32,116,111,32,101,110,115,117,114,101,32,99,97,108,108,105,110,103,32,97, +99,116,105,118,97,116,105,111,110,32,101,120,105,115,116,115,46,10,32,32, +32,32,32,32,32,32,32,32,32,32,32,42,32,67,97,108,108,32,115,116,97,99,107, +32,105,110,100,105,99,101,115,58,32,45,49,32,61,32,68,117,107,116,97,112, +101,46,97,99,116,44,32,45,50,32,61,32,103,101,116,67,117,114,114,101,110, +116,76,105,110,101,44,32,45,51,32,61,32,99,97,108,108,101,114,10,32,32,32, +32,32,32,32,32,32,32,32,32,32,42,47,10,10,32,32,32,32,32,32,32,32,32,32,32, +32,114,101,116,117,114,110,32,40,68,117,107,116,97,112,101,46,97,99,116,40, +45,51,41,32,124,124,32,123,125,41,46,108,105,110,101,78,117,109,98,101,114, +59,10,32,32,32,32,32,32,32,32,125,41,59,10,32,32,32,32,125,10,10,32,32,32, +32,47,47,32,76,111,103,103,101,114,32,111,98,106,101,99,116,32,102,111,114, +32,67,32,99,111,100,101,32,112,114,111,118,105,100,101,100,32,98,121,32, +105,110,105,116,32,99,111,100,101,32,110,111,119,46,10,32,32,32,32,105,102, +32,40,116,114,117,101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40, +68,46,76,111,103,103,101,114,44,32,39,99,108,111,103,39,44,32,110,101,119, +32,68,46,76,111,103,103,101,114,40,39,67,39,41,41,59,10,32,32,32,32,125,10, +10,32,32,32,32,47,47,32,84,114,97,99,107,105,110,103,32,116,97,98,108,101, +32,102,111,114,32,67,111,109,109,111,110,74,83,32,109,111,100,117,108,101, +32,108,111,97,100,105,110,103,46,10,32,32,32,32,105,102,32,40,116,114,117, +101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,109, +111,100,76,111,97,100,101,100,39,44,32,123,125,41,59,10,32,32,32,32,125,10, +125,41,40,116,104,105,115,44,32,68,117,107,116,97,112,101,41,59,10,0, }; #endif /* DUK_USE_BUILTIN_INITJS */ #else @@ -13765,6 +14451,14 @@ DUK_INTERNAL void duk_unicode_case_convert_string(duk_hthread *thr, duk_small_in */ DUK_INTERNAL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp) { +#if 1 /* FIXME */ + /* Fast canonicalization lookup at the cost of 128kB footprint. */ + DUK_ASSERT(cp >= 0); + if (DUK_LIKELY(cp < 0x10000L)) { + return (duk_codepoint_t) duk_unicode_re_canon_lookup[cp]; + } + return cp; +#else duk_codepoint_t y; y = duk__case_transform_helper(thr, @@ -13782,6 +14476,7 @@ DUK_INTERNAL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, } return y; +#endif } /* @@ -14185,8 +14880,8 @@ DUK_EXTERNAL void *duk_resize_buffer(duk_context *ctx, duk_idx_t index, duk_size h = (duk_hbuffer_dynamic *) duk_require_hbuffer(ctx, index); DUK_ASSERT(h != NULL); - if (!DUK_HBUFFER_HAS_DYNAMIC(h)) { - DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_BUFFER_NOT_DYNAMIC); + if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) { + DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_WRONG_BUFFER_TYPE); } /* maximum size check is handled by callee */ @@ -14206,8 +14901,8 @@ DUK_EXTERNAL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_ h = (duk_hbuffer_dynamic *) duk_require_hbuffer(ctx, index); DUK_ASSERT(h != NULL); - if (!DUK_HBUFFER_HAS_DYNAMIC(h)) { - DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_BUFFER_NOT_DYNAMIC); + if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) { + DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_WRONG_BUFFER_TYPE); } /* Forget the previous allocation, setting size to 0 and alloc to @@ -14225,6 +14920,24 @@ DUK_EXTERNAL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_ return ptr; } + +DUK_EXTERNAL void duk_config_buffer(duk_context *ctx, duk_idx_t index, void *ptr, duk_size_t len) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_hbuffer_external *h; + + DUK_ASSERT(ctx != NULL); + + h = (duk_hbuffer_external *) duk_require_hbuffer(ctx, index); + DUK_ASSERT(h != NULL); + + if (!DUK_HBUFFER_HAS_EXTERNAL(h)) { + DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_WRONG_BUFFER_TYPE); + } + DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h)); + + DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(thr->heap, h, ptr); + DUK_HBUFFER_EXTERNAL_SET_SIZE(h, len); +} #line 1 "duk_api_bytecode.c" /* * Bytecode dump/load @@ -14608,7 +15321,7 @@ static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t duk_uint8_t *fun_data; duk_uint8_t *q; duk_idx_t idx_base; - duk_tval *tv; + duk_tval *tv1; duk_uarridx_t arr_idx; /* XXX: There's some overlap with duk_js_closure() here, but @@ -14709,10 +15422,15 @@ static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t break; } case DUK__SER_NUMBER: { + /* Important to do a fastint check so that constants are + * properly read back as fastints. + */ + duk_tval tv_tmp; duk_double_t val; DUK__ASSERT_LEFT(8); val = DUK_RAW_READ_DOUBLE_BE(p); - duk_push_number(ctx, val); + DUK_TVAL_SET_NUMBER_CHKFAST(&tv_tmp, val); + duk_push_tval(ctx, &tv_tmp); break; } default: { @@ -14744,28 +15462,28 @@ static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t DUK_HCOMPILEDFUNCTION_SET_DATA(thr->heap, h_fun, h_data); DUK_HBUFFER_INCREF(thr, h_data); - tv = duk_get_tval(ctx, idx_base + 2); /* may be NULL if no constants or inner funcs */ - DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv != NULL); + tv1 = duk_get_tval(ctx, idx_base + 2); /* may be NULL if no constants or inner funcs */ + DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv1 != NULL); q = fun_data; if (count_const > 0) { - /* Explicit zero size check to avoid NULL 'tv'. */ - DUK_MEMCPY((void *) q, (const void *) tv, sizeof(duk_tval) * count_const); + /* Explicit zero size check to avoid NULL 'tv1'. */ + DUK_MEMCPY((void *) q, (const void *) tv1, sizeof(duk_tval) * count_const); for (n = count_const; n > 0; n--) { DUK_TVAL_INCREF_FAST(thr, (duk_tval *) (void *) q); /* no side effects */ q += sizeof(duk_tval); } - tv += count_const; + tv1 += count_const; } DUK_HCOMPILEDFUNCTION_SET_FUNCS(thr->heap, h_fun, (duk_hobject **) (void *) q); for (n = count_funcs; n > 0; n--) { duk_hobject *h_obj; - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv)); - h_obj = DUK_TVAL_GET_OBJECT(tv); + DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1)); + h_obj = DUK_TVAL_GET_OBJECT(tv1); DUK_ASSERT(h_obj != NULL); - tv++; + tv1++; DUK_HOBJECT_INCREF(thr, h_obj); *((duk_hobject **) (void *) q) = h_obj; @@ -15346,6 +16064,7 @@ DUK_EXTERNAL void duk_new(duk_context *ctx, duk_idx_t nargs) { */ #ifdef DUK_USE_AUGMENT_ERROR_CREATE + duk_hthread_sync_currpc(thr); duk_err_augment_error_create(thr, thr, NULL, 0, 1 /*noblame_fileline*/); #endif @@ -15357,6 +16076,34 @@ DUK_EXTERNAL void duk_new(duk_context *ctx, duk_idx_t nargs) { DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_CONSTRUCTABLE); } +DUK_LOCAL duk_ret_t duk__pnew_helper(duk_context *ctx) { + duk_uint_t nargs; + + nargs = duk_to_uint(ctx, -1); + duk_pop(ctx); + + duk_new(ctx, nargs); + return 1; +} + +DUK_EXTERNAL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs) { + duk_int_t rc; + + DUK_ASSERT_CTX_VALID(ctx); + + /* For now, just use duk_safe_call() to wrap duk_new(). We can't + * simply use a protected duk_handle_call() because there's post + * processing which might throw. It should be possible to ensure + * the post processing never throws (except in internal errors and + * out of memory etc which are always allowed) and then remove this + * wrapper. + */ + + duk_push_uint(ctx, nargs); + rc = duk_safe_call(ctx, duk__pnew_helper, nargs + 2 /*nargs*/, 1 /*nrets*/); + return rc; +} + DUK_EXTERNAL duk_bool_t duk_is_constructor_call(duk_context *ctx) { duk_hthread *thr = (duk_hthread *) ctx; duk_activation *act; @@ -15893,10 +16640,12 @@ DUK_EXTERNAL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, du goto got_rc; } + duk_push_global_object(ctx); /* explicit 'this' binding, see GH-164 */ + if (flags & DUK_COMPILE_SAFE) { - rc = duk_pcall(ctx, 0); + rc = duk_pcall_method(ctx, 0); } else { - duk_call(ctx, 0); + duk_call_method(ctx, 0); rc = DUK_EXEC_SUCCESS; } @@ -16105,6 +16854,7 @@ DUK_EXTERNAL void duk_debugger_attach(duk_context *ctx, heap->dbg_processing = 0; heap->dbg_paused = 1; heap->dbg_state_dirty = 1; + heap->dbg_force_restart = 0; heap->dbg_step_type = 0; heap->dbg_step_thread = NULL; heap->dbg_step_csindex = 0; @@ -16284,6 +17034,7 @@ DUK_EXTERNAL void duk_set_global_object(duk_context *ctx) { */ h_prev_glob = thr->builtins[DUK_BIDX_GLOBAL]; + DUK_UNREF(h_prev_glob); thr->builtins[DUK_BIDX_GLOBAL] = h_glob; DUK_HOBJECT_INCREF(thr, h_glob); DUK_HOBJECT_DECREF_ALLOWNULL(thr, h_prev_glob); /* side effects, in theory (referenced by global env) */ @@ -17110,6 +17861,7 @@ DUK_EXTERNAL duk_int_t duk_api_global_line = 0; * Helpers */ +/* Check that there's room to push one value. */ #if defined(DUK_USE_VALSTACK_UNSAFE) /* Faster but value stack overruns are memory unsafe. */ #define DUK__CHECK_SPACE() do { \ @@ -17185,9 +17937,9 @@ DUK_LOCAL duk_int_t duk__api_coerce_d2i(duk_context *ctx, duk_idx_t index, duk_b if (require) { DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_NUMBER); - } else { - return 0; + /* not reachable */ } + return 0; } DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk_bool_t require) { @@ -17242,9 +17994,9 @@ DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk if (require) { DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_NUMBER); - } else { - return 0; + /* not reachable */ } + return 0; } /* @@ -17258,7 +18010,8 @@ DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk DUK_EXTERNAL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; - duk_idx_t vs_size; + duk_uidx_t vs_size; + duk_uidx_t uindex; DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT(DUK_INVALID_INDEX < 0); @@ -17270,117 +18023,110 @@ DUK_EXTERNAL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index) { */ /* Assume value stack sizes (in elements) fits into duk_idx_t. */ - vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT(vs_size >= 0); + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); + vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); + DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ if (index < 0) { - index = vs_size + index; - if (DUK_UNLIKELY(index < 0)) { - /* Also catches index == DUK_INVALID_INDEX: vs_size >= 0 - * so that vs_size + DUK_INVALID_INDEX cannot underflow - * and will always be negative. - */ - return DUK_INVALID_INDEX; - } + uindex = vs_size + (duk_uidx_t) index; } else { /* since index non-negative */ DUK_ASSERT(index != DUK_INVALID_INDEX); - - if (DUK_UNLIKELY(index >= vs_size)) { - return DUK_INVALID_INDEX; - } + uindex = (duk_uidx_t) index; } - DUK_ASSERT(index >= 0); - DUK_ASSERT(index < vs_size); - return index; + /* DUK_INVALID_INDEX won't be accepted as a valid index. */ + DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); + + if (DUK_LIKELY(uindex < vs_size)) { + return (duk_idx_t) uindex; + } + return DUK_INVALID_INDEX; } DUK_EXTERNAL duk_idx_t duk_require_normalize_index(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; - duk_idx_t vs_size; + duk_uidx_t vs_size; + duk_uidx_t uindex; DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT(DUK_INVALID_INDEX < 0); - vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT(vs_size >= 0); + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); + vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); + DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ if (index < 0) { - index = vs_size + index; - if (DUK_UNLIKELY(index < 0)) { - goto invalid_index; - } + uindex = vs_size + (duk_uidx_t) index; } else { DUK_ASSERT(index != DUK_INVALID_INDEX); - if (DUK_UNLIKELY(index >= vs_size)) { - goto invalid_index; - } + uindex = (duk_uidx_t) index; } - DUK_ASSERT(index >= 0); - DUK_ASSERT(index < vs_size); - return index; + /* DUK_INVALID_INDEX won't be accepted as a valid index. */ + DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - invalid_index: + if (DUK_LIKELY(uindex < vs_size)) { + return (duk_idx_t) uindex; + } DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX); return 0; /* unreachable */ } DUK_INTERNAL duk_tval *duk_get_tval(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; - duk_idx_t vs_size; + duk_uidx_t vs_size; + duk_uidx_t uindex; DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT(DUK_INVALID_INDEX < 0); - vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT(vs_size >= 0); + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); + vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); + DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ if (index < 0) { - index = vs_size + index; - if (DUK_UNLIKELY(index < 0)) { - return NULL; - } + uindex = vs_size + (duk_uidx_t) index; } else { DUK_ASSERT(index != DUK_INVALID_INDEX); - if (DUK_UNLIKELY(index >= vs_size)) { - return NULL; - } + uindex = (duk_uidx_t) index; } - DUK_ASSERT(index >= 0); - DUK_ASSERT(index < vs_size); - return thr->valstack_bottom + index; + /* DUK_INVALID_INDEX won't be accepted as a valid index. */ + DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); + + if (DUK_LIKELY(uindex < vs_size)) { + return thr->valstack_bottom + uindex; + } + return NULL; } DUK_INTERNAL duk_tval *duk_require_tval(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; - duk_idx_t vs_size; + duk_uidx_t vs_size; + duk_uidx_t uindex; DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT(DUK_INVALID_INDEX < 0); - vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT(vs_size >= 0); + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); + vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); + DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ + /* Use unsigned arithmetic to optimize comparison. */ if (index < 0) { - index = vs_size + index; - if (DUK_UNLIKELY(index < 0)) { - goto invalid_index; - } + uindex = vs_size + (duk_uidx_t) index; } else { DUK_ASSERT(index != DUK_INVALID_INDEX); - if (DUK_UNLIKELY(index >= vs_size)) { - goto invalid_index; - } + uindex = (duk_uidx_t) index; } - DUK_ASSERT(index >= 0); - DUK_ASSERT(index < vs_size); - return thr->valstack_bottom + index; + /* DUK_INVALID_INDEX won't be accepted as a valid index. */ + DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - invalid_index: + if (DUK_LIKELY(uindex < vs_size)) { + return thr->valstack_bottom + uindex; + } DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX); return NULL; } @@ -17417,91 +18163,98 @@ DUK_EXTERNAL duk_idx_t duk_get_top(duk_context *ctx) { return (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); } -/* set stack top within currently allocated range, but don't reallocate */ +/* Set stack top within currently allocated range, but don't reallocate. + * This is performance critical especially for call handling, so whenever + * changing, profile and look at generated code. + */ DUK_EXTERNAL void duk_set_top(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; - duk_idx_t vs_size; - duk_idx_t vs_limit; - duk_idx_t count; - duk_tval tv_tmp; + duk_uidx_t vs_size; + duk_uidx_t vs_limit; + duk_uidx_t uindex; duk_tval *tv; DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT(DUK_INVALID_INDEX < 0); - vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - vs_limit = (duk_idx_t) (thr->valstack_end - thr->valstack_bottom); + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); + DUK_ASSERT(thr->valstack_end >= thr->valstack_bottom); + vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); + vs_limit = (duk_uidx_t) (thr->valstack_end - thr->valstack_bottom); if (index < 0) { /* Negative indices are always within allocated stack but * must not go below zero index. */ - index = vs_size + index; - if (index < 0) { - /* Also catches index == DUK_INVALID_INDEX. */ - goto invalid_index; - } + uindex = vs_size + (duk_uidx_t) index; } else { /* Positive index can be higher than valstack top but must * not go above allocated stack (equality is OK). */ - if (index > vs_limit) { - goto invalid_index; - } + uindex = (duk_uidx_t) index; } - DUK_ASSERT(index >= 0); - DUK_ASSERT(index <= vs_limit); - if (index >= vs_size) { - /* Stack size increases or stays the same. Fill the new - * entries (if any) with undefined. No pointer stability - * issues here so we can use a running pointer. - */ + /* DUK_INVALID_INDEX won't be accepted as a valid index. */ + DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); + DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_limit); - tv = thr->valstack_top; - count = index - vs_size; - DUK_ASSERT(count >= 0); - while (count > 0) { - /* no need to decref previous or new value */ +#if defined(DUK_USE_VALSTACK_UNSAFE) + DUK_ASSERT(uindex <= vs_limit); +#else + if (DUK_UNLIKELY(uindex > vs_limit)) { + DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX); + return; + } +#endif + DUK_ASSERT(uindex <= vs_limit); + + /* Handle change in value stack top. Respect value stack + * initialization policy: 'undefined' above top. Note that + * DECREF may cause a side effect that reallocates valstack, + * so must relookup after DECREF. + */ + + if (uindex >= vs_size) { + /* Stack size increases or stays the same. */ +#if defined(DUK_USE_ASSERTIONS) + duk_uidx_t count; + + count = uindex - vs_size; + while (count != 0) { count--; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv)); - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv); - tv++; + tv = thr->valstack_top + count; + DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); } - thr->valstack_top = tv; +#endif + thr->valstack_top = thr->valstack_bottom + uindex; } else { - /* Stack size decreases, DECREF entries which are above the - * new top. Each DECREF potentially invalidates valstack - * pointers, so don't hold on to pointers. The valstack top - * must also be updated on every loop in case a GC is triggered. - */ + /* Stack size decreases. */ +#if defined(DUK_USE_REFERENCE_COUNTING) + duk_uidx_t count; - /* XXX: Here it would be useful to have a DECREF macro which - * doesn't need a NULL check, and does refzero queueing without - * running the refzero algorithm. There would be no pointer - * instability in this case, and code could be inlined. After - * the loop, one call to refzero would be needed. - */ - - count = vs_size - index; + count = vs_size - uindex; DUK_ASSERT(count > 0); - while (count > 0) { count--; - tv = --thr->valstack_top; /* tv -> value just before prev top value */ + tv = --thr->valstack_top; /* tv -> value just before prev top value; must relookup */ DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ - - /* XXX: fast primitive to set a bunch of values to UNDEFINED_UNUSED */ - + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ } - } - return; +#else /* DUK_USE_REFERENCE_COUNTING */ + duk_uidx_t count; + duk_tval *tv_end; - invalid_index: - DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX); + count = vs_size - uindex; + tv = thr->valstack_top; + tv_end = tv - count; + DUK_ASSERT(tv > tv_end); + do { + tv--; + DUK_TVAL_SET_UNDEFINED(tv); + } while (tv != tv_end); + thr->valstack_top = tv_end; +#endif /* DUK_USE_REFERENCE_COUNTING */ + } } DUK_EXTERNAL duk_idx_t duk_get_top_index(duk_context *ctx) { @@ -17567,8 +18320,8 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size) duk_tval *old_valstack_post; #endif duk_tval *new_valstack; - duk_tval *p; duk_size_t new_alloc_size; + duk_tval *p; DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT(thr != NULL); @@ -17591,7 +18344,7 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size) * * Note: cannot use a plain DUK_REALLOC() because a mark-and-sweep may * invalidate the original thr->valstack base pointer inside the realloc - * process. See doc/memory-management.txt. + * process. See doc/memory-management.rst. */ new_alloc_size = sizeof(duk_tval) * new_size; @@ -17619,7 +18372,7 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size) * because mark-and-sweep must adhere to a strict stack policy. * In other words, logical bottom and top MUST NOT have changed. * - All values above the top are unreachable but are initialized - * to UNDEFINED_UNUSED, up to the post-realloc valstack_end. + * to UNDEFINED, up to the post-realloc valstack_end. * - 'old_end_offset' must be computed after realloc to be correct. */ @@ -17633,6 +18386,9 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size) #endif thr->valstack = new_valstack; thr->valstack_end = new_valstack + new_size; +#if !defined(DUK_USE_PREFER_SIZE) + thr->valstack_size = new_size; +#endif thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + old_bottom_offset); thr->valstack_top = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + old_top_offset); @@ -17663,23 +18419,23 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size) (void *) thr->valstack, (void *) thr->valstack_end, (void *) thr->valstack_bottom, (void *) thr->valstack_top)); - /* init newly allocated slots (only) */ + /* Init newly allocated slots (only). */ p = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + old_end_offset_post); while (p < thr->valstack_end) { - /* never executed if new size is smaller */ - DUK_TVAL_SET_UNDEFINED_UNUSED(p); + /* Never executed if new size is smaller. */ + DUK_TVAL_SET_UNDEFINED(p); p++; } - /* assertion check: we maintain elements above top in known state */ -#ifdef DUK_USE_ASSERTIONS + /* Assert for value stack initialization policy. */ +#if defined(DUK_USE_ASSERTIONS) p = thr->valstack_top; while (p < thr->valstack_end) { - /* everything above old valstack top should be preinitialized now */ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(p)); + DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(p)); p++; } #endif + return 1; } @@ -17709,7 +18465,12 @@ duk_bool_t duk_valstack_resize_raw(duk_context *ctx, DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); DUK_ASSERT(thr->valstack_end >= thr->valstack_top); +#if defined(DUK_USE_PREFER_SIZE) old_size = (duk_size_t) (thr->valstack_end - thr->valstack); +#else + DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size); + old_size = thr->valstack_size; +#endif if (min_new_size <= old_size) { is_shrink = 1; @@ -17983,10 +18744,9 @@ DUK_EXTERNAL void duk_replace(duk_context *ctx, duk_idx_t to_index) { /* For tv1 == tv2, both pointing to stack top, the end result * is same as duk_pop(ctx). */ - DUK_TVAL_SET_TVAL(&tv_tmp, tv2); DUK_TVAL_SET_TVAL(tv2, tv1); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv1); + DUK_TVAL_SET_UNDEFINED(tv1); thr->valstack_top--; DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ } @@ -17995,7 +18755,6 @@ DUK_EXTERNAL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_ duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv1; duk_tval *tv2; - duk_tval tv_tmp; DUK_ASSERT_CTX_VALID(ctx); DUK_UNREF(thr); /* w/o refcounting */ @@ -18006,11 +18765,7 @@ DUK_EXTERNAL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_ DUK_ASSERT(tv2 != NULL); /* For tv1 == tv2, this is a no-op (no explicit check needed). */ - - DUK_TVAL_SET_TVAL(&tv_tmp, tv2); - DUK_TVAL_SET_TVAL(tv2, tv1); - DUK_TVAL_INCREF(thr, tv2); /* no side effects */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv2, tv1); /* side effects */ } DUK_EXTERNAL void duk_remove(duk_context *ctx, duk_idx_t index) { @@ -18045,7 +18800,7 @@ DUK_EXTERNAL void duk_remove(duk_context *ctx, duk_idx_t index) { nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); /* Note: 'q' is top-1 */ DUK_MEMMOVE(p, p + 1, nbytes); /* zero size not an issue: pointers are valid */ - DUK_TVAL_SET_UNDEFINED_UNUSED(q); + DUK_TVAL_SET_UNDEFINED(q); thr->valstack_top--; #ifdef DUK_USE_REFERENCE_COUNTING @@ -18106,24 +18861,22 @@ DUK_EXTERNAL void duk_xcopymove_raw(duk_context *to_ctx, duk_context *from_ctx, to_thr->valstack_top = (duk_tval *) (void *) (((duk_uint8_t *) p) + nbytes); if (is_copy) { - /* incref copies, keep originals */ + /* Incref copies, keep originals. */ q = to_thr->valstack_top; while (p < q) { DUK_TVAL_INCREF(to_thr, p); /* no side effects */ p++; } } else { - /* no net refcount change */ + /* No net refcount change. */ p = from_thr->valstack_top; q = (duk_tval *) (void *) (((duk_uint8_t *) p) - nbytes); from_thr->valstack_top = q; - /* elements above stack top are kept UNUSED */ while (p > q) { p--; - DUK_TVAL_SET_UNDEFINED_UNUSED(p); - - /* XXX: fast primitive to set a bunch of values to UNDEFINED_UNUSED */ + DUK_TVAL_SET_UNDEFINED(p); + /* XXX: fast primitive to set a bunch of values to UNDEFINED */ } } } @@ -18790,6 +19543,7 @@ DUK_EXTERNAL duk_size_t duk_get_length(duk_context *ctx, duk_idx_t index) { #endif default: /* number */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); return 0; } @@ -18880,31 +19634,25 @@ DUK_EXTERNAL void duk_to_defaultvalue(duk_context *ctx, duk_idx_t index, duk_int DUK_EXTERNAL void duk_to_undefined(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; DUK_ASSERT_CTX_VALID(ctx); DUK_UNREF(thr); tv = duk_require_tval(ctx, index); DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ } DUK_EXTERNAL void duk_to_null(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; DUK_ASSERT_CTX_VALID(ctx); DUK_UNREF(thr); tv = duk_require_tval(ctx, index); DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_NULL(tv); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NULL_UPDREF(thr, tv); /* side effects */ } /* E5 Section 9.1 */ @@ -18926,7 +19674,6 @@ DUK_EXTERNAL void duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t DUK_EXTERNAL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; duk_bool_t val; DUK_ASSERT_CTX_VALID(ctx); @@ -18942,16 +19689,13 @@ DUK_EXTERNAL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index) { /* Note: no need to re-lookup tv, conversion is side effect free */ DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_BOOLEAN(tv, val); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv, val); /* side effects */ return val; } DUK_EXTERNAL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; duk_double_t d; DUK_ASSERT_CTX_VALID(ctx); @@ -18963,9 +19707,7 @@ DUK_EXTERNAL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index) { /* Note: need to re-lookup because ToNumber() may have side effects */ tv = duk_require_tval(ctx, index); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_NUMBER(tv, d); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */ return d; } @@ -18978,7 +19720,6 @@ typedef duk_double_t (*duk__toint_coercer)(duk_hthread *thr, duk_tval *tv); DUK_LOCAL duk_double_t duk__to_int_uint_helper(duk_context *ctx, duk_idx_t index, duk__toint_coercer coerce_func) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; duk_double_t d; DUK_ASSERT_CTX_VALID(ctx); @@ -18991,9 +19732,7 @@ DUK_LOCAL duk_double_t duk__to_int_uint_helper(duk_context *ctx, duk_idx_t index /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ tv = duk_require_tval(ctx, index); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_NUMBER(tv, d); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */ return d; } @@ -19018,7 +19757,6 @@ DUK_EXTERNAL duk_uint_t duk_to_uint(duk_context *ctx, duk_idx_t index) { DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; duk_int32_t ret; DUK_ASSERT_CTX_VALID(ctx); @@ -19030,14 +19768,10 @@ DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) { /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ tv = duk_require_tval(ctx, index); #if defined(DUK_USE_FASTINT) - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_FASTINT_I32(tv, ret); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv, ret); /* side effects */ return ret; #else - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_NUMBER(tv, (duk_double_t) ret); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, (duk_double_t) ret); /* side effects */ return ret; #endif } @@ -19045,7 +19779,6 @@ DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) { DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; duk_uint32_t ret; DUK_ASSERT_CTX_VALID(ctx); @@ -19057,14 +19790,10 @@ DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) { /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ tv = duk_require_tval(ctx, index); #if defined(DUK_USE_FASTINT) - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_FASTINT_U32(tv, ret); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv, ret); /* side effects */ return ret; #else - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_NUMBER(tv, (duk_double_t) ret); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, (duk_double_t) ret); /* side effects */ #endif return ret; } @@ -19072,7 +19801,6 @@ DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) { DUK_EXTERNAL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index) { duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv; - duk_tval tv_tmp; duk_uint16_t ret; DUK_ASSERT_CTX_VALID(ctx); @@ -19084,18 +19812,15 @@ DUK_EXTERNAL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index) { /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ tv = duk_require_tval(ctx, index); #if defined(DUK_USE_FASTINT) - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_FASTINT_U32(tv, ret); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv, ret); /* side effects */ return ret; #else - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_NUMBER(tv, (duk_double_t) ret); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, (duk_double_t) ret); /* side effects */ #endif return ret; } +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Special coercion for Uint8ClampedArray. */ DUK_INTERNAL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index) { duk_double_t d; @@ -19130,6 +19855,7 @@ DUK_INTERNAL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index) } return ret; } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ DUK_EXTERNAL const char *duk_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) { DUK_ASSERT_CTX_VALID(ctx); @@ -19171,11 +19897,21 @@ DUK_EXTERNAL const char *duk_safe_to_lstring(duk_context *ctx, duk_idx_t index, ; } DUK_ASSERT(duk_is_string(ctx, -1)); + DUK_ASSERT(duk_get_string(ctx, -1) != NULL); duk_replace(ctx, index); - return duk_require_lstring(ctx, index, out_len); + return duk_get_lstring(ctx, index, out_len); } +#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */ +DUK_EXTERNAL duk_hstring *duk_safe_to_hstring(duk_context *ctx, duk_idx_t index) { + (void) duk_safe_to_string(ctx, index); + DUK_ASSERT(duk_is_string(ctx, index)); + DUK_ASSERT(duk_get_hstring(ctx, index) != NULL); + return duk_get_hstring(ctx, index); +} +#endif + /* XXX: other variants like uint, u32 etc */ DUK_INTERNAL duk_int_t duk_to_int_clamped_raw(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped) { duk_hthread *thr = (duk_hthread *) ctx; @@ -19318,6 +20054,7 @@ DUK_EXTERNAL const char *duk_to_string(duk_context *ctx, duk_idx_t index) { #endif default: { /* number */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); duk_push_tval(ctx, tv); duk_numconv_stringify(ctx, @@ -19358,7 +20095,9 @@ DUK_EXTERNAL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size h_buf = duk_get_hbuffer(ctx, index); if (h_buf != NULL) { /* Buffer is kept as is, with the fixed/dynamic nature of the - * buffer only changed if requested. + * buffer only changed if requested. An external buffer + * is converted into a non-external dynamic buffer in a + * duk_to_dynamic_buffer() call. */ duk_uint_t tmp; @@ -19366,7 +20105,8 @@ DUK_EXTERNAL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size src_size = DUK_HBUFFER_GET_SIZE(h_buf); tmp = (DUK_HBUFFER_HAS_DYNAMIC(h_buf) ? DUK_BUF_MODE_DYNAMIC : DUK_BUF_MODE_FIXED); - if (tmp == mode || mode == DUK_BUF_MODE_DONTCARE) { + if ((tmp == mode && !DUK_HBUFFER_HAS_EXTERNAL(h_buf)) || + mode == DUK_BUF_MODE_DONTCARE) { /* Note: src_data may be NULL if input is a zero-size * dynamic buffer. */ @@ -19440,6 +20180,8 @@ DUK_EXTERNAL void *duk_to_pointer(duk_context *ctx, duk_idx_t index) { #endif default: /* number */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); res = NULL; break; } @@ -19497,11 +20239,11 @@ DUK_EXTERNAL void duk_to_object(duk_context *ctx, duk_idx_t index) { h_val = DUK_TVAL_GET_BUFFER(tv); DUK_ASSERT(h_val != NULL); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), - DUK_BIDX_BUFFER_PROTOTYPE); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), + DUK_BIDX_BUFFER_PROTOTYPE); DUK_ASSERT(h_bufobj != NULL); DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE((duk_hobject *) h_bufobj)); DUK_ASSERT(DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) h_bufobj)); @@ -19575,6 +20317,8 @@ DUK_EXTERNAL void duk_to_object(duk_context *ctx, duk_idx_t index) { case DUK_TAG_FASTINT: #endif default: { + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_NUMBER); proto = DUK_BIDX_NUMBER_PROTOTYPE; @@ -19657,6 +20401,7 @@ DUK_EXTERNAL duk_int_t duk_get_type(duk_context *ctx, duk_idx_t index) { #endif default: /* Note: number has no explicit tag (in 8-byte representation) */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); return DUK_TYPE_NUMBER; } @@ -19700,6 +20445,7 @@ DUK_EXTERNAL duk_uint_t duk_get_type_mask(duk_context *ctx, duk_idx_t index) { #endif default: /* Note: number has no explicit tag (in 8-byte representation) */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); return DUK_TYPE_MASK_NUMBER; } @@ -19874,20 +20620,6 @@ DUK_EXTERNAL duk_bool_t duk_is_callable(duk_context *ctx, duk_idx_t index) { return duk_is_function(ctx, index); } -DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index) { - duk_tval *tv; - - DUK_ASSERT_CTX_VALID(ctx); - - tv = duk_get_tval(ctx, index); - if (tv && DUK_TVAL_IS_BUFFER(tv)) { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - return (DUK_HBUFFER_HAS_DYNAMIC(h) ? 1 : 0); - } - return 0; -} - DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index) { duk_tval *tv; @@ -19902,11 +20634,32 @@ DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index) { return 0; } -/* XXX: make macro in API */ -DUK_EXTERNAL duk_bool_t duk_is_primitive(duk_context *ctx, duk_idx_t index) { +DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index) { + duk_tval *tv; + DUK_ASSERT_CTX_VALID(ctx); - return !duk_is_object(ctx, index); + tv = duk_get_tval(ctx, index); + if (tv && DUK_TVAL_IS_BUFFER(tv)) { + duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); + DUK_ASSERT(h != NULL); + return (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0); + } + return 0; +} + +DUK_EXTERNAL duk_bool_t duk_is_external_buffer(duk_context *ctx, duk_idx_t index) { + duk_tval *tv; + + DUK_ASSERT_CTX_VALID(ctx); + + tv = duk_get_tval(ctx, index); + if (tv && DUK_TVAL_IS_BUFFER(tv)) { + duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); + DUK_ASSERT(h != NULL); + return (DUK_HBUFFER_HAS_DYNAMIC(h) && DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0); + } + return 0; } DUK_EXTERNAL duk_errcode_t duk_get_error_code(duk_context *ctx, duk_idx_t index) { @@ -19968,29 +20721,18 @@ DUK_INTERNAL void duk_push_tval(duk_context *ctx, duk_tval *tv) { DUK_TVAL_INCREF(thr, tv); /* no side effects */ } -#if defined(DUK_USE_DEBUGGER_SUPPORT) -/* Right now only needed by the debugger. */ -DUK_INTERNAL void duk_push_unused(duk_context *ctx) { - duk_hthread *thr; - duk_tval *tv_slot; - - DUK_ASSERT_CTX_VALID(ctx); - thr = (duk_hthread *) ctx; - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_UNDEFINED_UNUSED(tv_slot); -} -#endif - DUK_EXTERNAL void duk_push_undefined(duk_context *ctx) { duk_hthread *thr; - duk_tval *tv_slot; DUK_ASSERT_CTX_VALID(ctx); thr = (duk_hthread *) ctx; DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv_slot); + + /* Because value stack init policy is 'undefined above top', + * we don't need to write, just assert. + */ + thr->valstack_top++; + DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 1)); } DUK_EXTERNAL void duk_push_null(duk_context *ctx) { @@ -20263,46 +21005,39 @@ DUK_EXTERNAL void duk_push_pointer(duk_context *ctx, void *val) { DUK_TVAL_SET_POINTER(tv_slot, val); } -#define DUK__PUSH_THIS_FLAG_CHECK_COERC (1 << 0) -#define DUK__PUSH_THIS_FLAG_TO_OBJECT (1 << 1) -#define DUK__PUSH_THIS_FLAG_TO_STRING (1 << 2) +DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t check_object_coercible) { + duk_hthread *thr; + duk_tval *tv_slot; -DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t flags) { - duk_hthread *thr = (duk_hthread *) ctx; - - DUK_ASSERT(thr != NULL); DUK_ASSERT_CTX_VALID(ctx); DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* avoid warning (unsigned) */ + thr = (duk_hthread *) ctx; DUK_ASSERT(thr->callstack_top <= thr->callstack_size); + DUK__CHECK_SPACE(); - if (thr->callstack_top == 0) { - if (flags & DUK__PUSH_THIS_FLAG_CHECK_COERC) { + DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* because of valstack init policy */ + tv_slot = thr->valstack_top++; + + if (DUK_UNLIKELY(thr->callstack_top == 0)) { + if (check_object_coercible) { goto type_error; } - duk_push_undefined(ctx); + /* 'undefined' already on stack top */ } else { - duk_tval tv_tmp; duk_tval *tv; /* 'this' binding is just before current activation's bottom */ DUK_ASSERT(thr->valstack_bottom > thr->valstack); tv = thr->valstack_bottom - 1; - if (flags & DUK__PUSH_THIS_FLAG_CHECK_COERC) { - if (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv)) { - goto type_error; - } + if (check_object_coercible && + (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv))) { + /* XXX: better macro for DUK_TVAL_IS_UNDEFINED_OR_NULL(tv) */ + goto type_error; } - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - duk_push_tval(ctx, &tv_tmp); + DUK_TVAL_SET_TVAL(tv_slot, tv); + DUK_TVAL_INCREF(thr, tv); } - - if (flags & DUK__PUSH_THIS_FLAG_TO_OBJECT) { - duk_to_object(ctx, -1); - } else if (flags & DUK__PUSH_THIS_FLAG_TO_STRING) { - duk_to_string(ctx, -1); - } - return; type_error: @@ -20312,13 +21047,13 @@ DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t flags) { DUK_EXTERNAL void duk_push_this(duk_context *ctx) { DUK_ASSERT_CTX_VALID(ctx); - duk__push_this_helper(ctx, 0 /*flags*/); + duk__push_this_helper(ctx, 0 /*check_object_coercible*/); } DUK_INTERNAL void duk_push_this_check_object_coercible(duk_context *ctx) { DUK_ASSERT_CTX_VALID(ctx); - duk__push_this_helper(ctx, DUK__PUSH_THIS_FLAG_CHECK_COERC /*flags*/); + duk__push_this_helper(ctx, 1 /*check_object_coercible*/); } DUK_INTERNAL duk_hobject *duk_push_this_coercible_to_object(duk_context *ctx) { @@ -20326,8 +21061,8 @@ DUK_INTERNAL duk_hobject *duk_push_this_coercible_to_object(duk_context *ctx) { DUK_ASSERT_CTX_VALID(ctx); - duk__push_this_helper(ctx, DUK__PUSH_THIS_FLAG_CHECK_COERC | - DUK__PUSH_THIS_FLAG_TO_OBJECT /*flags*/); + duk__push_this_helper(ctx, 1 /*check_object_coercible*/); + duk_to_object(ctx, -1); h = duk_get_hobject(ctx, -1); DUK_ASSERT(h != NULL); return h; @@ -20338,8 +21073,8 @@ DUK_INTERNAL duk_hstring *duk_push_this_coercible_to_string(duk_context *ctx) { DUK_ASSERT_CTX_VALID(ctx); - duk__push_this_helper(ctx, DUK__PUSH_THIS_FLAG_CHECK_COERC | - DUK__PUSH_THIS_FLAG_TO_STRING /*flags*/); + duk__push_this_helper(ctx, 1 /*check_object_coercible*/); + duk_to_string(ctx, -1); h = duk_get_hstring(ctx, -1); DUK_ASSERT(h != NULL); return h; @@ -20869,7 +21604,7 @@ DUK_EXTERNAL duk_idx_t duk_push_c_lightfunc(duk_context *ctx, duk_c_function fun return 0; /* not reached */ } -DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx) { +DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject_raw(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx) { duk_hthread *thr = (duk_hthread *) ctx; duk_hbufferobject *obj; duk_tval *tv_slot; @@ -20898,6 +21633,134 @@ DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject(duk_context *ctx, duk_uint return obj; } +/* XXX: There's quite a bit of overlap with buffer creation handling in + * duk_bi_buffer.c. Look for overlap and refactor. + */ +#define DUK__PACK_ARGS(classnum,protobidx,elemtype,elemshift,isview) \ + (((classnum) << 24) | ((protobidx) << 16) | ((elemtype) << 8) | ((elemshift) << 4) | (isview)) + +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) +static const duk_uint32_t duk__bufobj_flags_lookup[] = { + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_DUKTAPE_BUFFER */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_NODEJS_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_NODEJS_BUFFER */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_ARRAYBUFFER, DUK_BIDX_ARRAYBUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_ARRAYBUFFER */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_DATAVIEW, DUK_BIDX_DATAVIEW_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 1), /* DUK_BUFOBJ_DATAVIEW */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT8ARRAY, DUK_BIDX_INT8ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT8, 0, 1), /* DUK_BUFOBJ_INT8ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8ARRAY, DUK_BIDX_UINT8ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 1), /* DUK_BUFOBJ_UINT8ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY, DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED, 0, 1), /* DUK_BUFOBJ_UINT8CLAMPEDARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT16ARRAY, DUK_BIDX_INT16ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT16, 1, 1), /* DUK_BUFOBJ_INT16ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT16ARRAY, DUK_BIDX_UINT16ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT16, 1, 1), /* DUK_BUFOBJ_UINT16ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT32ARRAY, DUK_BIDX_INT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT32, 2, 1), /* DUK_BUFOBJ_INT32ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT32ARRAY, DUK_BIDX_UINT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT32, 2, 1), /* DUK_BUFOBJ_UINT32ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT32ARRAY, DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_FLOAT32, 2, 1), /* DUK_BUFOBJ_FLOAT32ARRAY */ + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT64ARRAY, DUK_BIDX_FLOAT64ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_FLOAT64, 3, 1) /* DUK_BUFOBJ_FLOAT64ARRAY */ +}; +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +/* Only allow Duktape.Buffer when support disabled. */ +static const duk_uint32_t duk__bufobj_flags_lookup[] = { + DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0) /* DUK_BUFOBJ_DUKTAPE_BUFFER */ +}; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#undef DUK__PACK_ARGS + +DUK_EXTERNAL void duk_push_buffer_object(duk_context *ctx, duk_idx_t idx_buffer, duk_size_t byte_offset, duk_size_t byte_length, duk_uint_t flags) { + duk_hthread *thr; + duk_hbufferobject *h_bufobj; + duk_hbuffer *h_val; + duk_uint32_t tmp; + duk_uint_t classnum; + duk_uint_t protobidx; + duk_uint_t lookupidx; + duk_uint_t uint_offset, uint_length, uint_added; + + DUK_ASSERT_CTX_VALID(ctx); + thr = (duk_hthread *) ctx; + DUK_UNREF(thr); + + /* The underlying types for offset/length in duk_hbufferobject is + * duk_uint_t; make sure argument values fit and that offset + length + * does not wrap. + */ + uint_offset = (duk_uint_t) byte_offset; + uint_length = (duk_uint_t) byte_length; + if (sizeof(duk_size_t) != sizeof(duk_uint_t)) { + if ((duk_size_t) uint_offset != byte_offset || (duk_size_t) uint_length != byte_length) { + goto range_error; + } + } + uint_added = uint_offset + uint_length; + if (uint_added < uint_offset) { + goto range_error; + } + DUK_ASSERT(uint_added >= uint_offset && uint_added >= uint_length); + + DUK_ASSERT_DISABLE(flags >= 0); /* flags is unsigned */ + lookupidx = flags & 0x0f; /* 4 low bits */ + if (lookupidx >= sizeof(duk__bufobj_flags_lookup) / sizeof(duk_uint32_t)) { + goto arg_error; + } + tmp = duk__bufobj_flags_lookup[lookupidx]; + classnum = tmp >> 24; + protobidx = (tmp >> 16) & 0xff; + + h_val = duk_require_hbuffer(ctx, idx_buffer); + DUK_ASSERT(h_val != NULL); + + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(classnum), + protobidx); + DUK_ASSERT(h_bufobj != NULL); + + h_bufobj->buf = h_val; + DUK_HBUFFER_INCREF(thr, h_val); + h_bufobj->offset = uint_offset; + h_bufobj->length = uint_length; + h_bufobj->shift = (tmp >> 4) & 0x0f; + h_bufobj->elem_type = (tmp >> 8) & 0xff; + h_bufobj->is_view = tmp & 0x0f; + DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj); + +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) + /* TypedArray views need an automatic ArrayBuffer which must be + * provided as .buffer property of the view. Just create a new + * ArrayBuffer sharing the same underlying buffer. + */ + if (flags & DUK_BUFOBJ_CREATE_ARRBUF) { + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), + DUK_BIDX_ARRAYBUFFER_PROTOTYPE); + + DUK_ASSERT(h_bufobj != NULL); + + h_bufobj->buf = h_val; + DUK_HBUFFER_INCREF(thr, h_val); + h_bufobj->offset = uint_offset; + h_bufobj->length = uint_length; + DUK_ASSERT(h_bufobj->shift == 0); + h_bufobj->elem_type = DUK_HBUFFEROBJECT_ELEM_UINT8; + DUK_ASSERT(h_bufobj->is_view == 0); + DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj); + + duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE); + duk_compact(ctx, -1); + } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ + + return; + + range_error: + DUK_ERROR(thr, DUK_ERR_RANGE_ERROR, DUK_STR_INVALID_CALL_ARGS); + return; /* not reached */ + + arg_error: + DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_CALL_ARGS); + return; /* not reached */ +} + DUK_EXTERNAL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap) { duk_hthread *thr = (duk_hthread *) ctx; duk_idx_t ret; @@ -20988,6 +21851,7 @@ DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_sm duk_hthread *thr = (duk_hthread *) ctx; duk_tval *tv_slot; duk_hbuffer *h; + void *buf_data; DUK_ASSERT_CTX_VALID(ctx); @@ -21001,7 +21865,7 @@ DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_sm DUK_ERROR(thr, DUK_ERR_RANGE_ERROR, DUK_STR_BUFFER_TOO_LONG); } - h = duk_hbuffer_alloc(thr->heap, size, flags); + h = duk_hbuffer_alloc(thr->heap, size, flags, &buf_data); if (!h) { DUK_ERROR(thr, DUK_ERR_ALLOC_ERROR, DUK_STR_ALLOC_FAILED); } @@ -21011,7 +21875,7 @@ DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_sm DUK_HBUFFER_INCREF(thr, h); thr->valstack_top++; - return DUK_HBUFFER_GET_DATA_PTR(thr->heap, h); + return (void *) buf_data; } DUK_EXTERNAL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr) { @@ -21098,16 +21962,17 @@ DUK_INTERNAL void duk_push_hobject_bidx(duk_context *ctx, duk_small_int_t builti DUK_EXTERNAL void duk_pop_n(duk_context *ctx, duk_idx_t count) { duk_hthread *thr = (duk_hthread *) ctx; + duk_tval *tv; DUK_ASSERT_CTX_VALID(ctx); - if (count < 0) { + if (DUK_UNLIKELY(count < 0)) { DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_COUNT); return; } DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - if ((duk_size_t) (thr->valstack_top - thr->valstack_bottom) < (duk_size_t) count) { + if (DUK_UNLIKELY((duk_size_t) (thr->valstack_top - thr->valstack_bottom) < (duk_size_t) count)) { DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_POP_TOO_MANY); } @@ -21121,36 +21986,58 @@ DUK_EXTERNAL void duk_pop_n(duk_context *ctx, duk_idx_t count) { * instability), inline code. */ -#ifdef DUK_USE_REFERENCE_COUNTING - while (count > 0) { - duk_tval tv_tmp; - duk_tval *tv; + /* XXX: optimize loops */ +#if defined(DUK_USE_REFERENCE_COUNTING) + while (count > 0) { + count--; tv = --thr->valstack_top; /* tv points to element just below prev top */ DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ - count--; + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ } #else + tv = thr->valstack_top; while (count > 0) { - duk_tval *tv; - - tv = --thr->valstack_top; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); count--; + tv--; + DUK_ASSERT(tv >= thr->valstack_bottom); + DUK_TVAL_SET_UNDEFINED(tv); } + thr->valstack_top = tv; #endif DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); } +/* Popping one element is called so often that when footprint is not an issue, + * compile a specialized function for it. + */ +#if defined(DUK_USE_PREFER_SIZE) DUK_EXTERNAL void duk_pop(duk_context *ctx) { DUK_ASSERT_CTX_VALID(ctx); duk_pop_n(ctx, 1); } +#else +DUK_EXTERNAL void duk_pop(duk_context *ctx) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_tval *tv; + DUK_ASSERT_CTX_VALID(ctx); + + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); + if (DUK_UNLIKELY(thr->valstack_top == thr->valstack_bottom)) { + DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_POP_TOO_MANY); + } + + tv = --thr->valstack_top; /* tv points to element just below prev top */ + DUK_ASSERT(tv >= thr->valstack_bottom); +#ifdef DUK_USE_REFERENCE_COUNTING + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ +#else + DUK_TVAL_SET_UNDEFINED(tv); +#endif + DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); +} +#endif /* !DUK_USE_PREFER_SIZE */ DUK_EXTERNAL void duk_pop_2(duk_context *ctx) { DUK_ASSERT_CTX_VALID(ctx); @@ -21182,6 +22069,12 @@ DUK_EXTERNAL void duk_throw(duk_context *ctx) { * just before an error is thrown. */ + /* Sync so that augmentation sees up-to-date activations, NULL + * thr->ptr_curr_pc so that it's not used if side effects occur + * in augmentation or longjmp handling. + */ + duk_hthread_sync_and_null_currpc(thr); + #if defined(DUK_USE_AUGMENT_ERROR_THROW) DUK_DDD(DUK_DDDPRINT("THROW ERROR (API): %!dT (before throw augment)", (duk_tval *) duk_get_tval(ctx, -1))); duk_err_augment_error_throw(thr); @@ -21423,7 +22316,7 @@ DUK_LOCAL void duk__concat_and_join_helper(duk_context *ctx, duk_idx_t count_in, h = duk_to_hstring(ctx, -((duk_idx_t) count) - 1); DUK_ASSERT(h != NULL); - /* A bit tricky overflow test, see doc/code-issues.txt. */ + /* A bit tricky overflow test, see doc/code-issues.rst. */ t1 = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h); t2 = (duk_size_t) (count - 1); limit = (duk_size_t) DUK_HSTRING_MAX_BYTELEN; @@ -23338,6 +24231,7 @@ DUK_INTERNAL duk_ret_t duk_bi_boolean_constructor(duk_context *ctx) { * Misc helpers */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Map DUK_HBUFFEROBJECT_ELEM_xxx to duk_hobject class number. * Sync with duk_hbufferobject.h and duk_hobject.h. */ @@ -23352,11 +24246,13 @@ static const duk_uint8_t duk__buffer_class_from_elemtype[9] = { DUK_HOBJECT_CLASS_FLOAT32ARRAY, DUK_HOBJECT_CLASS_FLOAT64ARRAY }; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Map DUK_HBUFFEROBJECT_ELEM_xxx to prototype object built-in index. * Sync with duk_hbufferobject.h. */ -static const duk_uint16_t duk__buffer_proto_from_elemtype[9] = { +static const duk_uint8_t duk__buffer_proto_from_elemtype[9] = { DUK_BIDX_UINT8ARRAY_PROTOTYPE, DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, DUK_BIDX_INT8ARRAY_PROTOTYPE, @@ -23367,8 +24263,10 @@ static const duk_uint16_t duk__buffer_proto_from_elemtype[9] = { DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, DUK_BIDX_FLOAT64ARRAY_PROTOTYPE }; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ -/* Map DUK_HBUFFEROBJECT_ELEM_xxx to byte size. +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) +/* Map DUK__FLX_xxx to byte size. */ static const duk_uint8_t duk__buffer_nbytes_from_fldtype[6] = { 1, /* DUK__FLD_8BIT */ @@ -23378,7 +24276,9 @@ static const duk_uint8_t duk__buffer_nbytes_from_fldtype[6] = { 8, /* DUK__FLD_DOUBLE */ 0 /* DUK__FLD_VARINT; not relevant here */ }; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Bitfield for each DUK_HBUFFEROBJECT_ELEM_xxx indicating which element types * are compatible with a blind byte copy for the TypedArray set() method (also * used for TypedArray constructor). Array index is target buffer elem type, @@ -23424,7 +24324,9 @@ static duk_uint16_t duk__buffer_elemtype_copy_compatible[9] = { /* xxx -> DUK_HBUFFEROBJECT_ELEM_FLOAT64 */ (1U << DUK_HBUFFEROBJECT_ELEM_FLOAT64) }; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Shared helper. */ DUK_LOCAL duk_hbufferobject *duk__getrequire_bufobj_this(duk_context *ctx, duk_bool_t throw_flag) { duk_hthread *thr; @@ -23450,19 +24352,25 @@ DUK_LOCAL duk_hbufferobject *duk__getrequire_bufobj_this(duk_context *ctx, duk_b } return NULL; } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Check that 'this' is a duk_hbufferobject and return a pointer to it. */ DUK_LOCAL duk_hbufferobject *duk__get_bufobj_this(duk_context *ctx) { return duk__getrequire_bufobj_this(ctx, 0); } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Check that 'this' is a duk_hbufferobject and return a pointer to it * (NULL if not). */ DUK_LOCAL duk_hbufferobject *duk__require_bufobj_this(duk_context *ctx) { return duk__getrequire_bufobj_this(ctx, 1); } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Check that value is a duk_hbufferobject and return a pointer to it. */ DUK_LOCAL duk_hbufferobject *duk__require_bufobj_value(duk_context *ctx, duk_idx_t index) { duk_hthread *thr; @@ -23486,7 +24394,9 @@ DUK_LOCAL duk_hbufferobject *duk__require_bufobj_value(duk_context *ctx, duk_idx } DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_BUFFER); + return NULL; /* not reachable */ } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ DUK_LOCAL void duk__set_bufobj_buffer(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_hbuffer *h_val) { duk_hthread *thr; @@ -23509,6 +24419,7 @@ DUK_LOCAL void duk__set_bufobj_buffer(duk_context *ctx, duk_hbufferobject *h_buf DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj); } +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx, duk_uint_t len) { duk_hbuffer *h_val; duk_hbufferobject *h_bufobj; @@ -23517,11 +24428,11 @@ DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx, h_val = (duk_hbuffer *) duk_get_hbuffer(ctx, -1); DUK_ASSERT(h_val != NULL); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), - DUK_BIDX_ARRAYBUFFER_PROTOTYPE); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), + DUK_BIDX_ARRAYBUFFER_PROTOTYPE); DUK_ASSERT(h_bufobj != NULL); duk__set_bufobj_buffer(ctx, h_bufobj, h_val); @@ -23529,7 +24440,9 @@ DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx, return h_bufobj; } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Shared offset/length coercion helper. */ DUK_LOCAL void duk__resolve_offset_opt_length(duk_context *ctx, duk_hbufferobject *h_bufarg, @@ -23589,7 +24502,9 @@ DUK_LOCAL void duk__resolve_offset_opt_length(duk_context *ctx, fail_range: duk_error(thr, DUK_ERR_RANGE_ERROR, DUK_STR_INVALID_CALL_ARGS); } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Shared lenient buffer length clamping helper. No negative indices, no * element/byte shifting. */ @@ -23625,7 +24540,9 @@ DUK_LOCAL void duk__clamp_startend_nonegidx_noshift(duk_context *ctx, *out_start_offset = start_offset; *out_end_offset = end_offset; } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Shared lenient buffer length clamping helper. Indices are treated as * element indices (though output values are byte offsets) which only * really matters for TypedArray views as other buffer object have a zero @@ -23691,6 +24608,7 @@ DUK_LOCAL void duk__clamp_startend_negidx_shifted(duk_context *ctx, *out_start_offset = start_offset; *out_end_offset = end_offset; } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Indexed read/write helpers (also used from outside this file) @@ -23703,9 +24621,13 @@ DUK_INTERNAL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hb switch (h_bufobj->elem_type) { case DUK_HBUFFEROBJECT_ELEM_UINT8: +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) case DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED: +#endif duk_push_uint(ctx, (duk_uint_t) du.uc[0]); break; +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) + /* These are not needed when only Duktape.Buffer is supported. */ case DUK_HBUFFEROBJECT_ELEM_INT8: duk_push_int(ctx, (duk_int_t) (duk_int8_t) du.uc[0]); break; @@ -23727,6 +24649,7 @@ DUK_INTERNAL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hb case DUK_HBUFFEROBJECT_ELEM_FLOAT64: duk_push_number(ctx, (duk_double_t) du.d); break; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ default: DUK_UNREACHABLE(); } @@ -23747,6 +24670,8 @@ DUK_INTERNAL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbuffe case DUK_HBUFFEROBJECT_ELEM_UINT8: du.uc[0] = (duk_uint8_t) duk_to_uint32(ctx, -1); break; +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) + /* These are not needed when only Duktape.Buffer is supported. */ case DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED: du.uc[0] = (duk_uint8_t) duk_to_uint8clamped(ctx, -1); break; @@ -23771,6 +24696,7 @@ DUK_INTERNAL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbuffe case DUK_HBUFFEROBJECT_ELEM_FLOAT64: du.d = (duk_double_t) duk_to_number(ctx, -1); break; +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ default: DUK_UNREACHABLE(); } @@ -23864,11 +24790,11 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_constructor(duk_context *ctx) { h_val = duk_get_hbuffer(ctx, -1); DUK_ASSERT(h_val != NULL); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), - DUK_BIDX_BUFFER_PROTOTYPE); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), + DUK_BIDX_BUFFER_PROTOTYPE); DUK_ASSERT(h_bufobj != NULL); duk__set_bufobj_buffer(ctx, h_bufobj, h_val); @@ -23884,6 +24810,7 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_constructor(duk_context *ctx) { * Node.js Buffer: constructor */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) { /* Internal class is Object: Object.prototype.toString.call(new Buffer(0)) * prints "[object Object]". @@ -23935,11 +24862,11 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) { h_buf = duk_get_hbuffer(ctx, -1); DUK_ASSERT(h_buf != NULL); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), - DUK_BIDX_NODEJS_BUFFER_PROTOTYPE); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), + DUK_BIDX_NODEJS_BUFFER_PROTOTYPE); DUK_ASSERT(h_bufobj != NULL); h_bufobj->buf = h_buf; @@ -23952,11 +24879,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) { return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * ArrayBuffer, DataView, and TypedArray constructors */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) { duk_hbufferobject *h_bufobj; duk_hbuffer *h_val; @@ -23986,11 +24920,11 @@ DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) { DUK_ASSERT(h_val != NULL); } - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), - DUK_BIDX_ARRAYBUFFER_PROTOTYPE); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), + DUK_BIDX_ARRAYBUFFER_PROTOTYPE); DUK_ASSERT(h_bufobj != NULL); duk__set_bufobj_buffer(ctx, h_bufobj, h_val); @@ -24001,12 +24935,20 @@ DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) { fail_length: return DUK_RET_RANGE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ + /* Format of magic, bits: * 0...1: elem size shift (0-3) * 2...5: elem type (DUK_HBUFFEROBJECT_ELEM_xxx) */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) { duk_hthread *thr; duk_tval *tv; @@ -24121,11 +25063,11 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) { DUK_ASSERT(byte_offset + byte_length <= h_bufarg->length); DUK_ASSERT((elem_length << shift) == byte_length); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(class_num), - proto_bidx); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(class_num), + proto_bidx); h_val = h_bufarg->buf; if (h_val == NULL) { return DUK_RET_TYPE_ERROR; @@ -24220,11 +25162,11 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) { DUK_ASSERT(h_val != NULL); /* Push the resulting view object and attach the ArrayBuffer. */ - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(class_num), - proto_bidx); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(class_num), + proto_bidx); h_bufobj->buf = h_val; DUK_HBUFFER_INCREF(thr, h_val); @@ -24344,7 +25286,14 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) { fail_arguments: return DUK_RET_RANGE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) { duk_hbufferobject *h_bufarg; duk_hbufferobject *h_bufobj; @@ -24364,11 +25313,11 @@ DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) { DUK_ASSERT(offset <= h_bufarg->length); DUK_ASSERT(offset + length <= h_bufarg->length); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATAVIEW), - DUK_BIDX_DATAVIEW_PROTOTYPE); + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATAVIEW), + DUK_BIDX_DATAVIEW_PROTOTYPE); h_val = h_bufarg->buf; if (h_val == NULL) { @@ -24400,11 +25349,18 @@ DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) { DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * ArrayBuffer.isView() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) { duk_hobject *h_obj; duk_bool_t ret = 0; @@ -24416,11 +25372,18 @@ DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) { duk_push_boolean(ctx, ret); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer: toString([encoding], [start], [end]) */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) { duk_hthread *thr; duk_hbufferobject *h_this; @@ -24466,11 +25429,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) { type_error: return DUK_RET_TYPE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Duktape.Buffer: toString(), valueOf() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) { duk_hthread *thr; duk_tval *tv; @@ -24520,11 +25490,18 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) type_error: return DUK_RET_TYPE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.prototype: toJSON() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) { duk_hthread *thr; duk_hbufferobject *h_this; @@ -24562,6 +25539,12 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) { return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.prototype.equals() @@ -24569,6 +25552,7 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) { * Node.js Buffer.compare() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) { duk_hthread *thr; duk_small_uint_t magic; @@ -24617,11 +25601,18 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) { return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.prototype.fill() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) { duk_hthread *thr; duk_hbufferobject *h_this; @@ -24687,11 +25678,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) { duk_push_this(ctx); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.prototype.write(string, [offset], [length], [encoding]) */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) { duk_hthread *thr; duk_hbufferobject *h_this; @@ -24731,11 +25729,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) { duk_push_uint(ctx, length); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.prototype.copy() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) { duk_hthread *thr; duk_hbufferobject *h_this; @@ -24839,6 +25844,12 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) { fail_bounds: return DUK_RET_RANGE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * TypedArray.prototype.set() @@ -24876,6 +25887,7 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) { * See test-bi-typedarray-proto-set.js. */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) { duk_hthread *thr; duk_hbufferobject *h_this; @@ -25034,7 +26046,7 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) { (void *) p_dst_base, (long) dst_length)); if (p_src_base >= p_dst_base + dst_length || /* source starts after dest ends */ - p_src_base + src_length < p_dst_base) { /* source ends before dest starts */ + p_src_base + src_length <= p_dst_base) { /* source ends before dest starts */ no_overlap = 1; } @@ -25128,6 +26140,12 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) { return 0; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.prototype.slice([start], [end]) @@ -25147,6 +26165,7 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) { * - TypedArray .subarray() arguments are element indices, not byte offsets */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) { duk_hthread *thr; duk_small_int_t magic; @@ -25191,11 +26210,11 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) { */ res_class_num = DUK_HOBJECT_GET_CLASS_NUMBER((duk_hobject *) h_this); - h_bufobj = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(res_class_num), - DUK_BIDX_OBJECT_PROTOTYPE); /* replaced */ + h_bufobj = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(res_class_num), + DUK_BIDX_OBJECT_PROTOTYPE); /* replaced */ DUK_ASSERT(h_bufobj != NULL); res_proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_this); /* may be NULL */ DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) h_bufobj, res_proto); @@ -25258,11 +26277,18 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) { DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.isEncoding() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) { const char *encoding; @@ -25273,11 +26299,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) { duk_push_boolean(ctx, DUK_STRCMP(encoding, "utf8") == 0); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.isBuffer() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) { duk_hthread *thr; duk_tval *tv; @@ -25307,11 +26340,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) { duk_push_boolean(ctx, ret); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.byteLength() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) { const char *str; duk_size_t len; @@ -25326,11 +26366,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) { duk_push_size_t(ctx, len); return 1; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Node.js Buffer.concat() */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) { duk_hthread *thr; duk_hobject *h_arg; @@ -25390,11 +26437,11 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) { return DUK_RET_RANGE_ERROR; } - h_bufres = duk_push_bufferobject(ctx, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFFEROBJECT | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), - DUK_BIDX_NODEJS_BUFFER_PROTOTYPE); + h_bufres = duk_push_bufferobject_raw(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_FLAG_BUFFEROBJECT | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER), + DUK_BIDX_NODEJS_BUFFER_PROTOTYPE); DUK_ASSERT(h_bufres != NULL); p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, total_length); @@ -25438,6 +26485,12 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) { return 1; /* return h_bufres */ } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ /* * Shared readfield and writefield methods @@ -25446,6 +26499,7 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) { * types. All offsets are byte based so no offset shifting is needed. */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* Format of magic, bits: * 0...1: field type; 0=uint8, 1=uint16, 2=uint32, 3=float, 4=double, 5=unused, 6=unused, 7=unused * 3: endianness: 0=little, 1=big @@ -25715,7 +26769,14 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx) { return DUK_RET_RANGE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) /* XXX: split into separate functions for each field type? */ DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) { duk_hthread *thr; @@ -25986,6 +27047,12 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) { } return DUK_RET_RANGE_ERROR; } +#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ +DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) { + DUK_UNREF(ctx); + return DUK_RET_UNSUPPORTED_ERROR; +} +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ #undef DUK__FLD_8BIT #undef DUK__FLD_16BIT @@ -26374,7 +27441,7 @@ DUK_LOCAL duk_bool_t duk__parse_string_iso8601_subset(duk_context *ctx, const ch * Note in particular that we must parse whatever toString(), toUTCString(), * and toISOString() can produce; see E5.1 Section 15.9.4.2. * - * Returns 1 to allow tailcalling. + * Returns 1 to allow tail calling. * * There is much room for improvement here with respect to supporting * alternative datetime formats. For instance, V8 parses '2012-01-01' as @@ -26934,7 +28001,7 @@ DUK_LOCAL duk_double_t duk__push_this_get_timeval(duk_context *ctx, duk_small_ui } /* Set timeval to 'this' from dparts, push the new time value onto the - * value stack and return 1 (caller can then tailcall us). Expects + * value stack and return 1 (caller can then tail call us). Expects * the value stack to contain 'this' on the stack top. */ DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_double_t *dparts, duk_small_uint_t flags) { @@ -26947,7 +28014,7 @@ DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_doub duk_dup_top(ctx); /* -> [ ... this timeval_new timeval_new ] */ duk_put_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE); - /* stack top: new time value, return 1 to allow tailcalls */ + /* stack top: new time value, return 1 to allow tail calls */ return 1; } @@ -27066,7 +28133,7 @@ DUK_LOCAL duk_ret_t duk__to_string_helper(duk_context *ctx, duk_small_uint_t fla /* Helper for component getter calls: check 'this' binding, get the * internal time value, split it into parts (either as UTC time or * local time), push a specified component as a return value to the - * value stack and return 1 (caller can then tailcall us). + * value stack and return 1 (caller can then tail call us). */ DUK_LOCAL duk_ret_t duk__get_part_helper(duk_context *ctx, duk_small_uint_t flags_and_idx) { duk_double_t d; @@ -27098,7 +28165,7 @@ DUK_LOCAL duk_ret_t duk__get_part_helper(duk_context *ctx, duk_small_uint_t flag * local time), modify one or more components as specified, recompute * the time value, set it as the internal value. Finally, push the * new time value as a return value to the value stack and return 1 - * (caller can then tailcall us). + * (caller can then tail call us). */ DUK_LOCAL duk_ret_t duk__set_part_helper(duk_context *ctx, duk_small_uint_t flags_and_maxnargs) { duk_double_t d; @@ -28234,12 +29301,15 @@ DUK_INTERNAL duk_ret_t duk_bi_duktape_object_info(duk_context *ctx) { case DUK_HTYPE_BUFFER: { duk_hbuffer *h_buf = (duk_hbuffer *) h; if (DUK_HBUFFER_HAS_DYNAMIC(h_buf)) { - /* XXX: when alloc_size == 0, dynamic buf ptr may now be NULL, in which case - * the second allocation does not exist. - */ - duk_hbuffer_dynamic *h_dyn = (duk_hbuffer_dynamic *) h; - duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_dynamic))); - duk_push_uint(ctx, (duk_uint_t) (DUK_HBUFFER_DYNAMIC_GET_SIZE(h_dyn))); + if (DUK_HBUFFER_HAS_EXTERNAL(h_buf)) { + duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_external))); + } else { + /* When alloc_size == 0 the second allocation may not + * actually exist. + */ + duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_dynamic))); + } + duk_push_uint(ctx, (duk_uint_t) (DUK_HBUFFER_GET_SIZE(h_buf))); } else { duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_fixed) + DUK_HBUFFER_GET_SIZE(h_buf) + 1)); } @@ -28281,14 +29351,11 @@ DUK_INTERNAL duk_ret_t duk_bi_duktape_object_act(duk_context *ctx) { duk_push_tval(ctx, &act->tv_func); - pc = (duk_uint_fast32_t) act->pc; - if (pc > 0) { - /* Relevant PC is just before current one because PC is - * post-incremented. This should match what error augment - * code does. - */ - pc--; - } + /* Relevant PC is just before current one because PC is + * post-incremented. This should match what error augment + * code does. + */ + pc = duk_hthread_get_act_prev_pc(thr, act); duk_push_uint(ctx, (duk_uint_t) pc); #if defined(DUK_USE_PC2LINE) @@ -29863,6 +30930,8 @@ DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) { duk_file *f_out; #endif + DUK_UNREF(thr); + magic = duk_get_current_magic(ctx); DUK_UNREF(magic); @@ -29917,7 +30986,7 @@ DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) { p += sz_str; *p++ = (duk_uint8_t) (i == nargs - 1 ? DUK_ASC_LF : DUK_ASC_SPACE); } - DUK_ASSERT((const duk_uint8_t *) p == buf + sz_total); + DUK_ASSERT((const duk_uint8_t *) p == buf + sz_buf); #endif /* DUK_USE_PREFER_SIZE */ } else { buf = (const duk_uint8_t *) &nl; @@ -30397,7 +31466,7 @@ DUK_LOCAL_DECL void duk__emit_2(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch1, DUK_LOCAL_DECL void duk__unemit_1(duk_json_enc_ctx *js_ctx); #endif DUK_LOCAL_DECL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h); -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) +#if defined(DUK_USE_FASTINT) DUK_LOCAL_DECL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *p); #endif DUK_LOCAL_DECL void duk__emit_stridx(duk_json_enc_ctx *js_ctx, duk_small_uint_t stridx); @@ -31367,7 +32436,7 @@ DUK_LOCAL void duk__dec_reviver_walk(duk_json_dec_ctx *js_ctx) { #define DUK__EMIT_1(js_ctx,ch) duk__emit_1((js_ctx), (duk_uint_fast8_t) (ch)) #define DUK__EMIT_2(js_ctx,ch1,ch2) duk__emit_2((js_ctx), (duk_uint_fast8_t) (ch1), (duk_uint_fast8_t) (ch2)) #define DUK__EMIT_HSTR(js_ctx,h) duk__emit_hstring((js_ctx), (h)) -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) +#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC) #define DUK__EMIT_CSTR(js_ctx,p) duk__emit_cstring((js_ctx), (p)) #endif #define DUK__EMIT_STRIDX(js_ctx,i) duk__emit_stridx((js_ctx), (i)) @@ -31387,7 +32456,7 @@ DUK_LOCAL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h) { DUK_BW_WRITE_ENSURE_HSTRING(js_ctx->thr, &js_ctx->bw, h); } -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) +#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC) DUK_LOCAL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *str) { DUK_BW_WRITE_ENSURE_CSTRING(js_ctx->thr, &js_ctx->bw, str); } @@ -32356,6 +33425,8 @@ DUK_LOCAL void duk__enc_value2(duk_json_enc_ctx *js_ctx) { #endif default: { /* number */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); /* XXX: A fast path for usual integers would be useful when * fastint support is not enabled. */ @@ -32489,9 +33560,13 @@ DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, du /* If object has a .toJSON() property, we can't be certain * that it wouldn't mutate any value arbitrarily, so bail * out of the fast path. + * + * If an object is a Proxy we also can't avoid side effects + * so abandon. */ - if (duk_hobject_hasprop_raw(js_ctx->thr, obj, DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr))) { - DUK_DD(DUK_DDPRINT("object has a .toJSON property, abort fast path")); + if (duk_hobject_hasprop_raw(js_ctx->thr, obj, DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr)) || + DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj)) { + DUK_DD(DUK_DDPRINT("object has a .toJSON property or object is a Proxy, abort fast path")); goto abort_fastpath; } @@ -32598,7 +33673,7 @@ DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, du tv_val = DUK_HOBJECT_A_GET_VALUE_PTR(js_ctx->thr->heap, obj, i); - if (DUK_UNLIKELY(DUK_TVAL_IS_UNDEFINED_UNUSED(tv_val))) { + if (DUK_UNLIKELY(DUK_TVAL_IS_UNUSED(tv_val))) { /* Gap in array; check for inherited property, * bail out if one exists. This should be enough * to support gappy arrays for all practical code. @@ -32700,6 +33775,9 @@ DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, du /* XXX: A fast path for usual integers would be useful when * fastint support is not enabled. */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); + /* XXX: Stack discipline is annoying, could be changed in numconv. */ duk_push_tval((duk_context *) js_ctx->thr, tv); duk__enc_double(js_ctx); @@ -32780,7 +33858,7 @@ void duk_bi_json_parse_helper(duk_context *ctx, #ifdef DUK_USE_EXPLICIT_NULL_INIT /* nothing now */ #endif - js_ctx->recursion_limit = DUK_JSON_DEC_RECURSION_LIMIT; + js_ctx->recursion_limit = DUK_USE_JSON_DEC_RECLIMIT; DUK_ASSERT(js_ctx->recursion_depth == 0); /* Flag handling currently assumes that flags are consistent. This is OK @@ -33089,7 +34167,7 @@ void duk_bi_json_stringify_helper(duk_context *ctx, * slow path has a much larger recursion limit which we'll use if * necessary. */ - DUK_ASSERT(DUK_JSON_ENC_RECURSION_LIMIT >= DUK_JSON_ENC_LOOPARRAY); + DUK_ASSERT(DUK_USE_JSON_ENC_RECLIMIT >= DUK_JSON_ENC_LOOPARRAY); js_ctx->recursion_limit = DUK_JSON_ENC_LOOPARRAY; DUK_ASSERT(js_ctx->recursion_depth == 0); @@ -33156,7 +34234,7 @@ void duk_bi_json_stringify_helper(duk_context *ctx, /* [ ... buf loop (proplist) (gap) holder "" ] */ - js_ctx->recursion_limit = DUK_JSON_ENC_RECURSION_LIMIT; + js_ctx->recursion_limit = DUK_USE_JSON_ENC_RECLIMIT; DUK_ASSERT(js_ctx->recursion_depth == 0); undef = duk__enc_value1(js_ctx, idx_holder); /* [ ... holder key ] -> [ ... holder key val ] */ @@ -34681,7 +35759,7 @@ DUK_INTERNAL duk_ret_t duk_bi_object_prototype_to_locale_string(duk_context *ctx return DUK_RET_TYPE_ERROR; } duk_dup(ctx, 0); /* -> [ O toString O ] */ - duk_call_method(ctx, 0); /* XXX: call method tailcall? */ + duk_call_method(ctx, 0); /* XXX: call method tail call? */ return 1; } @@ -36440,7 +37518,6 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_constructor(duk_context *ctx) { DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) { duk_hthread *thr = (duk_hthread *) ctx; duk_hthread *thr_resume; - duk_tval tv_tmp; duk_tval *tv; duk_hobject *func; duk_hobject *caller_func; @@ -36555,17 +37632,11 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) { /* lj value2: thread */ DUK_ASSERT(thr->valstack_bottom < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2); - DUK_TVAL_SET_TVAL(&thr->heap->lj.value2, &thr->valstack_bottom[0]); - DUK_TVAL_INCREF(thr, &thr->heap->lj.value2); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value2, &thr->valstack_bottom[0]); /* side effects */ /* lj value1: value */ DUK_ASSERT(thr->valstack_bottom + 1 < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1); - DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, &thr->valstack_bottom[1]); - DUK_TVAL_INCREF(thr, &thr->heap->lj.value1); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[1]); /* side effects */ thr->heap->lj.iserror = is_error; @@ -36599,7 +37670,6 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) { DUK_INTERNAL duk_ret_t duk_bi_thread_yield(duk_context *ctx) { duk_hthread *thr = (duk_hthread *) ctx; - duk_tval tv_tmp; duk_hobject *caller_func; duk_small_int_t is_error; @@ -36682,10 +37752,7 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_yield(duk_context *ctx) { /* lj value1: value */ DUK_ASSERT(thr->valstack_bottom < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1); - DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, &thr->valstack_bottom[0]); - DUK_TVAL_INCREF(thr, &thr->heap->lj.value1); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[0]); /* side effects */ thr->heap->lj.iserror = is_error; @@ -37422,7 +38489,7 @@ DUK_LOCAL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h) { /* leave out trailing 'unused' elements */ while (a_limit > 0) { tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, a_limit - 1); - if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { + if (!DUK_TVAL_IS_UNUSED(tv)) { break; } a_limit--; @@ -37661,10 +38728,17 @@ DUK_LOCAL void duk__print_hbuffer(duk__dprint_state *st, duk_hbuffer *h) { } if (DUK_HBUFFER_HAS_DYNAMIC(h)) { - duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h; - duk_fb_sprintf(fb, "buffer:dynamic:%p:%ld", - (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(NULL, g), - (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(g)); + if (DUK_HBUFFER_HAS_EXTERNAL(h)) { + duk_hbuffer_external *g = (duk_hbuffer_external *) h; + duk_fb_sprintf(fb, "buffer:external:%p:%ld", + (void *) DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(NULL, g), + (long) DUK_HBUFFER_EXTERNAL_GET_SIZE(g)); + } else { + duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h; + duk_fb_sprintf(fb, "buffer:dynamic:%p:%ld", + (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(NULL, g), + (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(g)); + } } else { duk_fb_sprintf(fb, "buffer:fixed:%ld", (long) DUK_HBUFFER_GET_SIZE(h)); } @@ -37744,11 +38818,11 @@ DUK_LOCAL void duk__print_tval(duk__dprint_state *st, duk_tval *tv) { } switch (DUK_TVAL_GET_TAG(tv)) { case DUK_TAG_UNDEFINED: { - if (DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { - duk_fb_put_cstring(fb, "unused"); - } else { - duk_fb_put_cstring(fb, "undefined"); - } + duk_fb_put_cstring(fb, "undefined"); + break; + } + case DUK_TAG_UNUSED: { + duk_fb_put_cstring(fb, "unused"); break; } case DUK_TAG_NULL: { @@ -37791,6 +38865,7 @@ DUK_LOCAL void duk__print_tval(duk__dprint_state *st, duk_tval *tv) { #endif default: { /* IEEE double is approximately 16 decimal digits; print a couple extra */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); duk_fb_sprintf(fb, "%.18g", (double) DUK_TVAL_GET_NUMBER(tv)); break; @@ -38113,6 +39188,7 @@ DUK_INTERNAL void duk_debug_do_detach(duk_heap *heap) { heap->dbg_processing = 0; heap->dbg_paused = 0; heap->dbg_state_dirty = 0; + heap->dbg_force_restart = 0; heap->dbg_step_type = 0; heap->dbg_step_thread = NULL; heap->dbg_step_csindex = 0; @@ -38467,9 +39543,6 @@ DUK_INTERNAL void duk_debug_read_tval(duk_hthread *thr) { len = duk__debug_read_uint16_raw(thr); duk__debug_read_hbuffer_raw(thr, len); break; - case 0x15: - duk_push_unused(ctx); - break; case 0x16: duk_push_undefined(ctx); break; @@ -38508,6 +39581,7 @@ DUK_INTERNAL void duk_debug_read_tval(duk_hthread *thr) { duk_push_heapptr(thr, (void *) h); break; } + case 0x15: /* unused: not accepted in inbound messages */ default: goto fail; } @@ -38682,6 +39756,11 @@ DUK_INTERNAL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h) { (h != NULL ? (duk_size_t) DUK_HSTRING_GET_BYTELEN(h) : 0)); } +DUK_LOCAL void duk__debug_write_hstring_safe_top(duk_hthread *thr) { + duk_context *ctx = (duk_context *) thr; + duk_debug_write_hstring(thr, duk_safe_to_hstring(ctx, -1)); +} + DUK_INTERNAL void duk_debug_write_buffer(duk_hthread *thr, const char *data, duk_size_t length) { duk_debug_write_strbuf(thr, data, length, 0x13); } @@ -38752,8 +39831,10 @@ DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) { switch (DUK_TVAL_GET_TAG(tv)) { case DUK_TAG_UNDEFINED: - duk_debug_write_byte(thr, - DUK_TVAL_IS_UNDEFINED_UNUSED(tv) ? 0x15 : 0x16); + duk_debug_write_byte(thr, 0x16); + break; + case DUK_TAG_UNUSED: + duk_debug_write_byte(thr, 0x15); break; case DUK_TAG_NULL: duk_debug_write_byte(thr, 0x17); @@ -38789,6 +39870,7 @@ DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) { #endif default: /* Numbers are normalized to big (network) endian. */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); du.d = DUK_TVAL_GET_NUMBER(tv); DUK_DBLUNION_DOUBLE_HTON(&du); @@ -38861,22 +39943,24 @@ DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr) { duk_uint_fast32_t line; duk_uint_fast32_t pc; - if (thr->callstack_top == 0) { + act = duk_hthread_get_current_activation(thr); /* may be NULL */ + if (act == NULL) { return 0; } - act = thr->callstack + thr->callstack_top - 1; - /* act->pc indicates the next instruction about to be executed. This - * is usually correct, but for the 'debugger' statement it will be the - * instruction after that. + /* We're conceptually between two opcodes; act->pc indicates the next + * instruction to be executed. This is usually the correct pc/line to + * indicate in Status. (For the 'debugger' statement this now reports + * the pc/line after the debugger statement because the debugger opcode + * has already been executed.) */ - pc = (duk_uint_fast32_t) act->pc; + pc = duk_hthread_get_act_curr_pc(thr, act); /* XXX: this should be optimized to be a raw query and avoid valstack * operations if possible. */ - duk_push_hobject(ctx, act->func); + duk_push_tval(ctx, &act->tv_func); line = duk_hobject_pc2line_query(ctx, -1, pc); duk_pop(ctx); return line; @@ -38897,21 +39981,63 @@ DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr) { duk_debug_write_int(thr, 0); } else { act = thr->callstack + thr->callstack_top - 1; - duk_push_hobject(ctx, act->func); + duk_push_tval(ctx, &act->tv_func); duk_get_prop_string(ctx, -1, "fileName"); - duk_safe_to_string(ctx, -1); - duk_debug_write_hstring(thr, duk_require_hstring(ctx, -1)); + duk__debug_write_hstring_safe_top(thr); duk_get_prop_string(ctx, -2, "name"); - duk_safe_to_string(ctx, -1); - duk_debug_write_hstring(thr, duk_require_hstring(ctx, -1)); + duk__debug_write_hstring_safe_top(thr); duk_pop_3(ctx); + /* Report next pc/line to be executed. */ duk_debug_write_uint(thr, (duk_uint32_t) duk_debug_curr_line(thr)); - duk_debug_write_uint(thr, (duk_uint32_t) act->pc); + duk_debug_write_uint(thr, (duk_uint32_t) duk_hthread_get_act_curr_pc(thr, act)); } duk_debug_write_eom(thr); } +#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) +DUK_INTERNAL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal) { + /* + * NFY EOM + */ + + duk_context *ctx = (duk_context *) thr; + duk_activation *act; + duk_uint32_t pc; + + DUK_ASSERT(thr->valstack_top > thr->valstack); /* At least: ... [err] */ + + duk_debug_write_notify(thr, DUK_DBG_CMD_THROW); + duk_debug_write_int(thr, fatal); + + /* Report thrown value to client coerced to string */ + duk_dup(ctx, -1); + duk__debug_write_hstring_safe_top(thr); + duk_pop(ctx); + + if (duk_is_error(ctx, -1)) { + /* Error instance, use augmented error data directly */ + duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME); + duk__debug_write_hstring_safe_top(thr); + duk_get_prop_stridx(ctx, -2, DUK_STRIDX_LINE_NUMBER); + duk_debug_write_uint(thr, duk_get_uint(ctx, -1)); + } else { + /* For anything other than an Error instance, we calculate the error + * location directly from the current activation. + */ + act = thr->callstack + thr->callstack_top - 1; + duk_push_tval(ctx, &act->tv_func); + duk_get_prop_string(ctx, -1, "fileName"); + duk__debug_write_hstring_safe_top(thr); + pc = duk_hthread_get_act_prev_pc(thr, act); + duk_debug_write_uint(thr, (duk_uint32_t) duk_hobject_pc2line_query(ctx, -2, pc)); + } + duk_pop_2(ctx); /* shared pop */ + + duk_debug_write_eom(thr); +} +#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY */ + /* * Debug message processing */ @@ -39004,7 +40130,7 @@ DUK_LOCAL void duk__debug_skip_to_eom(duk_hthread *thr) { DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) { DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command version")); + DUK_D(DUK_DPRINT("debug command Version")); duk_debug_write_reply(thr); duk_debug_write_int(thr, DUK_VERSION); @@ -39024,7 +40150,7 @@ DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) { DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap *heap) { DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command triggerstatus")); + DUK_D(DUK_DPRINT("debug command TriggerStatus")); duk_debug_write_reply(thr); duk_debug_write_eom(thr); @@ -39032,7 +40158,7 @@ DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap *heap } DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) { - DUK_D(DUK_DPRINT("debug command pause")); + DUK_D(DUK_DPRINT("debug command Pause")); DUK_HEAP_SET_PAUSED(heap); duk_debug_write_reply(thr); @@ -39040,7 +40166,7 @@ DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) { } DUK_LOCAL void duk__debug_handle_resume(duk_hthread *thr, duk_heap *heap) { - DUK_D(DUK_DPRINT("debug command resume")); + DUK_D(DUK_DPRINT("debug command Resume")); DUK_HEAP_CLEAR_PAUSED(heap); duk_debug_write_reply(thr); @@ -39060,7 +40186,7 @@ DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap, duk_int3 step_type = DUK_STEP_TYPE_OUT; } - DUK_D(DUK_DPRINT("debug command stepinto/stepover/stepout: %d", (int) cmd)); + DUK_D(DUK_DPRINT("debug command StepInto/StepOver/StepOut: %d", (int) cmd)); line = duk_debug_curr_line(thr); if (line > 0) { heap->dbg_paused = 0; @@ -39079,7 +40205,7 @@ DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap, duk_int3 DUK_LOCAL void duk__debug_handle_list_break(duk_hthread *thr, duk_heap *heap) { duk_small_int_t i; - DUK_D(DUK_DPRINT("debug command listbreak")); + DUK_D(DUK_DPRINT("debug command ListBreak")); duk_debug_write_reply(thr); for (i = 0; i < (duk_small_int_t) heap->dbg_breakpoint_count; i++) { duk_debug_write_hstring(thr, heap->dbg_breakpoints[i].filename); @@ -39098,7 +40224,7 @@ DUK_LOCAL void duk__debug_handle_add_break(duk_hthread *thr, duk_heap *heap) { filename = duk_debug_read_hstring(thr); linenumber = (duk_uint32_t) duk_debug_read_int(thr); - DUK_D(DUK_DPRINT("debug command addbreak: %!O:%ld", (duk_hobject *) filename, (long) linenumber)); + DUK_D(DUK_DPRINT("debug command AddBreak: %!O:%ld", (duk_hobject *) filename, (long) linenumber)); idx = duk_debug_add_breakpoint(thr, filename, linenumber); if (idx >= 0) { duk_debug_write_reply(thr); @@ -39115,7 +40241,7 @@ DUK_LOCAL void duk__debug_handle_del_break(duk_hthread *thr, duk_heap *heap) { DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command delbreak")); + DUK_D(DUK_DPRINT("debug command DelBreak")); idx = (duk_small_uint_t) duk_debug_read_int(thr); if (duk_debug_remove_breakpoint(thr, idx)) { duk_debug_write_reply(thr); @@ -39131,7 +40257,7 @@ DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) { duk_bool_t rc; DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command getvar")); + DUK_D(DUK_DPRINT("debug command GetVar")); str = duk_debug_read_hstring(thr); /* push to stack */ DUK_ASSERT(str != NULL); @@ -39153,7 +40279,8 @@ DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) { duk_debug_write_reply(thr); if (rc) { duk_debug_write_int(thr, 1); - duk_debug_write_tval(thr, duk_require_tval(ctx, -2)); + DUK_ASSERT(duk_get_tval(ctx, -2) != NULL); + duk_debug_write_tval(thr, duk_get_tval(ctx, -2)); duk_pop_2(ctx); } else { duk_debug_write_int(thr, 0); @@ -39169,12 +40296,13 @@ DUK_LOCAL void duk__debug_handle_put_var(duk_hthread *thr, duk_heap *heap) { duk_tval *tv; DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command putvar")); + DUK_D(DUK_DPRINT("debug command PutVar")); str = duk_debug_read_hstring(thr); /* push to stack */ DUK_ASSERT(str != NULL); duk_debug_read_tval(thr); /* push to stack */ - tv = duk_require_tval(ctx, -1); + tv = duk_get_tval(ctx, -1); + DUK_ASSERT(tv != NULL); if (thr->callstack_top > 0) { duk_js_putvar_activation(thr, @@ -39198,6 +40326,7 @@ DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap *heap duk_context *ctx = (duk_context *) thr; duk_hthread *curr_thr = thr; duk_activation *curr_act; + duk_uint_fast32_t pc; duk_uint_fast32_t line; duk_size_t i; @@ -39210,19 +40339,31 @@ DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap *heap i--; curr_act = curr_thr->callstack + i; - /* XXX: optimize to use direct reads, - * i.e. avoid value stack operations. + /* PC/line semantics here are: + * - For callstack top we're conceptually between two + * opcodes and current PC indicates next line to + * execute, so report that (matches Status). + * - For other activations we're conceptually still + * executing the instruction at PC-1, so report that + * (matches error stacktrace behavior). + * - See: https://github.com/svaarala/duktape/issues/281 + */ + + /* XXX: optimize to use direct reads, i.e. avoid + * value stack operations. */ duk_push_tval(ctx, &curr_act->tv_func); duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME); - duk_safe_to_string(ctx, -1); - duk_debug_write_hstring(thr, duk_get_hstring(ctx, -1)); + duk__debug_write_hstring_safe_top(thr); duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME); - duk_safe_to_string(ctx, -1); - duk_debug_write_hstring(thr, duk_get_hstring(ctx, -1)); - line = duk_hobject_pc2line_query(ctx, -3, curr_act->pc); + duk__debug_write_hstring_safe_top(thr); + pc = duk_hthread_get_act_curr_pc(thr, curr_act); + if (i != curr_thr->callstack_top - 1 && pc > 0) { + pc--; + } + line = duk_hobject_pc2line_query(ctx, -3, pc); duk_debug_write_uint(thr, (duk_uint32_t) line); - duk_debug_write_uint(thr, (duk_uint32_t) curr_act->pc); + duk_debug_write_uint(thr, (duk_uint32_t) pc); duk_pop_3(ctx); } curr_thr = curr_thr->resumer; @@ -39285,7 +40426,7 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) { DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command eval")); + DUK_D(DUK_DPRINT("debug command Eval")); /* The eval code must be executed within the current (topmost) * activation. For now, use global object eval() function, with @@ -39309,7 +40450,7 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) { act = thr->callstack + thr->callstack_top - 1; fun = DUK_ACT_GET_FUNC(act); - if (fun && DUK_HOBJECT_IS_COMPILEDFUNCTION(fun)) { + if (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(fun)) { /* Direct eval requires that there's a current * activation and it is an Ecmascript function. * When Eval is executed from e.g. cooperate API @@ -39337,7 +40478,8 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) { duk_debug_write_reply(thr); duk_debug_write_int(thr, (duk_int32_t) eval_err); - duk_debug_write_tval(thr, duk_require_tval(ctx, -1)); + DUK_ASSERT(duk_get_tval(ctx, -1) != NULL); + duk_debug_write_tval(thr, duk_get_tval(ctx, -1)); duk_debug_write_eom(thr); duk_pop(ctx); @@ -39346,7 +40488,7 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) { DUK_LOCAL void duk__debug_handle_detach(duk_hthread *thr, duk_heap *heap) { DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command detach")); + DUK_D(DUK_DPRINT("debug command Detach")); duk_debug_write_reply(thr); duk_debug_write_eom(thr); @@ -39507,7 +40649,7 @@ DUK_LOCAL void duk__debug_dump_strtab_probe(duk_hthread *thr, duk_heap *heap) { #endif /* DUK_USE_STRTAB_PROBE */ DUK_LOCAL void duk__debug_handle_dump_heap(duk_hthread *thr, duk_heap *heap) { - DUK_D(DUK_DPRINT("debug command dumpheap")); + DUK_D(DUK_DPRINT("debug command DumpHeap")); duk_debug_write_reply(thr); duk__debug_dump_heap_allocated(thr, heap); @@ -39530,7 +40672,7 @@ DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap) DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command getbytecode")); + DUK_D(DUK_DPRINT("debug command GetBytecode")); duk_debug_write_reply(thr); if (thr->callstack_top == 0) { @@ -39544,9 +40686,9 @@ DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap) } DUK_ASSERT(fun == NULL || DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun)); - if (fun) { + if (fun != NULL) { n = DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(heap, fun); - duk_debug_write_int(thr, (int) n); + duk_debug_write_int(thr, (duk_int32_t) n); tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap, fun); for (i = 0; i < n; i++) { duk_debug_write_tval(thr, tv); @@ -39554,7 +40696,7 @@ DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap) } n = DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(heap, fun); - duk_debug_write_int(thr, (int) n); + duk_debug_write_int(thr, (duk_int32_t) n); fn = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap, fun); for (i = 0; i < n; i++) { duk_debug_write_hobject(thr, *fn); @@ -39689,6 +40831,75 @@ DUK_LOCAL void duk__debug_process_message(duk_hthread *thr) { return; } +/* Halt execution and enter a debugger message loop until execution is resumed + * by the client. PC for the current activation may be temporarily decremented + * so that the "current" instruction will be shown by the client. This helper + * is callable from anywhere, also outside bytecode executor. + */ + +DUK_INTERNAL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc) { + duk_activation *act; + duk_hcompiledfunction *fun; + duk_instr_t *old_pc = NULL; + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(thr->heap != NULL); + DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)); + DUK_ASSERT(thr->heap->dbg_processing == 0); + + DUK_HEAP_SET_PAUSED(thr->heap); + + act = duk_hthread_get_current_activation(thr); + + /* NOTE: act may be NULL if an error is thrown outside of any activation, + * which may happen in the case of, e.g. syntax errors. + */ + + /* Decrement PC if that was requested, this requires a PC sync. */ + if (act != NULL) { + duk_hthread_sync_currpc(thr); + old_pc = act->curr_pc; + fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); + + /* Short circuit if is safe: if act->curr_pc != NULL, 'fun' is + * guaranteed to be a non-NULL Ecmascript function. + */ + DUK_ASSERT(act->curr_pc == NULL || + (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun))); + if (use_prev_pc && + act->curr_pc != NULL && + act->curr_pc > DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun)) { + act->curr_pc--; + } + } + + /* Process debug messages until we are no longer paused. */ + + /* NOTE: This is a bit fragile. It's important to ensure that neither + * duk_debug_send_status() or duk_debug_process_messages() throws an + * error or act->curr_pc will never be reset. + */ + + thr->heap->dbg_processing = 1; + duk_debug_send_status(thr); + while (thr->heap->dbg_paused) { + DUK_ASSERT(thr->heap->dbg_processing); + duk_debug_process_messages(thr, 0 /*no_block*/); + } + thr->heap->dbg_processing = 0; + + /* XXX: Decrementing and restoring act->curr_pc works now, but if the + * debugger message loop gains the ability to adjust the current PC + * (e.g. a forced jump) restoring the PC here will break. Another + * approach would be to use a state flag for the "decrement 1 from + * topmost activation's PC" and take it into account whenever dealing + * with PC values. + */ + if (act != NULL) { + act->curr_pc = old_pc; /* restore PC */ + } +} + DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block) { duk_context *ctx = (duk_context *) thr; #if defined(DUK_USE_ASSERTIONS) @@ -39698,6 +40909,8 @@ DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t DUK_ASSERT(thr != NULL); DUK_UNREF(ctx); + DUK_ASSERT(thr->heap != NULL); + DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)); #if defined(DUK_USE_ASSERTIONS) entry_top = duk_get_top(ctx); #endif @@ -39795,6 +41008,7 @@ DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_ DUK_ASSERT(thr != NULL); heap = thr->heap; DUK_ASSERT(heap != NULL); + DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)); DUK_ASSERT_DISABLE(breakpoint_index >= 0); /* unsigned */ if (breakpoint_index >= heap->dbg_breakpoint_count) { @@ -39816,6 +41030,7 @@ DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_ heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL; DUK_HSTRING_DECREF(thr, h); /* side effects */ + DUK_UNREF(h); /* w/o refcounting */ /* Breakpoint entries above the used area are left as garbage. */ @@ -39880,7 +41095,7 @@ DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_ * The user error handler is stored in 'Duktape.errCreate' or * 'Duktape.errThrow' depending on whether we're augmenting the error at * creation or throw time. There are several alternatives to this approach, - * see doc/error-objects.txt for discussion. + * see doc/error-objects.rst for discussion. * * Note: since further longjmp()s may occur while calling the error handler * (for many reasons, e.g. a labeled 'break' inside the handler), the @@ -40006,7 +41221,7 @@ DUK_LOCAL void duk__add_traceback(duk_hthread *thr, duk_hthread *thr_callstack, * and cheap to create. It may change arbitrarily from version to version. * It should be decoded/accessed through version specific accessors only. * - * See doc/error-objects.txt. + * See doc/error-objects.rst. */ DUK_DDD(DUK_DDDPRINT("adding traceback to object: %!T", @@ -40093,10 +41308,7 @@ DUK_LOCAL void duk__add_traceback(duk_hthread *thr, duk_hthread *thr_callstack, * PC points to next instruction, find offending PC. Note that * PC == 0 for native code. */ - pc = thr_callstack->callstack[i].pc; - if (pc > 0) { - pc--; - } + pc = duk_hthread_get_act_prev_pc(thr_callstack, thr_callstack->callstack + i); DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */ DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */ d = ((duk_double_t) thr_callstack->callstack[i].flags) * DUK_DOUBLE_2TO32 + (duk_double_t) pc; @@ -40178,10 +41390,7 @@ DUK_LOCAL void duk__err_augment_builtin_throw(duk_hthread *thr, duk_hthread *thr /* PC points to next instruction, find offending PC. Note that * PC == 0 for native code. */ - pc = act->pc; - if (pc > 0) { - pc--; - } + pc = duk_hthread_get_act_prev_pc(thr, act); DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */ DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */ act = NULL; /* invalidated by pushes, so get out of the way */ @@ -40338,6 +41547,37 @@ DUK_INTERNAL void duk_err_longjmp(duk_hthread *thr) { /* include removed: duk_internal.h */ +/* + * Helper to walk the thread chain and see if there is an active error + * catcher. Protected calls or finally blocks aren't considered catching. + */ + +#if defined(DUK_USE_DEBUGGER_SUPPORT) +DUK_LOCAL duk_bool_t duk__have_active_catcher(duk_hthread *thr) { + /* + * XXX: As noted above, a protected API call won't be counted as a + * catcher. This is usually convenient, e.g. in the case of a top- + * level duk_pcall(), but may not always be desirable. Perhaps add an + * argument to treat them as catchers? + */ + + duk_size_t i; + + DUK_ASSERT(thr != NULL); + + while (thr != NULL) { + for (i = 0; i < thr->catchstack_top; i++) { + duk_catcher *cat = thr->catchstack + i; + if (DUK_CAT_HAS_CATCH_ENABLED(cat)) { + return 1; /* all we need to know */ + } + } + thr = thr->resumer; + } + return 0; +} +#endif /* DUK_USE_DEBUGGER_SUPPORT */ + /* * Get prototype object for an integer error code. */ @@ -40374,15 +41614,61 @@ DUK_INTERNAL duk_hobject *duk_error_prototype_from_code(duk_hthread *thr, duk_er */ DUK_INTERNAL void duk_err_setup_heap_ljstate(duk_hthread *thr, duk_small_int_t lj_type) { - duk_tval tv_tmp; +#if defined(DUK_USE_DEBUGGER_SUPPORT) + /* If something is thrown with the debugger attached and nobody will + * catch it, execution is paused before the longjmp, turning over + * control to the debug client. This allows local state to be examined + * before the stack is unwound. Errors are not intercepted when debug + * message loop is active (e.g. for Eval). + */ + + /* XXX: Allow customizing the pause and notify behavior at runtime + * using debugger runtime flags. For now the behavior is fixed using + * config options. + */ +#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) || defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT) + if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) && + !thr->heap->dbg_processing && + lj_type == DUK_LJ_TYPE_THROW) { + duk_context *ctx = (duk_context *) thr; + duk_bool_t fatal; + duk_hobject *h_obj; + + /* Don't intercept a DoubleError, we may have caused the initial double + * fault and attempting to intercept it will cause us to be called + * recursively and exhaust the C stack. + */ + h_obj = duk_get_hobject(ctx, -1); + if (h_obj == thr->builtins[DUK_BIDX_DOUBLE_ERROR]) { + DUK_D(DUK_DPRINT("built-in DoubleError instance thrown, not intercepting")); + goto skip_throw_intercept; + } + + DUK_D(DUK_DPRINT("throw with debugger attached, report to client")); + + fatal = !duk__have_active_catcher(thr); + +#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) + /* Report it to the debug client */ + duk_debug_send_throw(thr, fatal); +#endif + +#if defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT) + if (fatal) { + DUK_D(DUK_DPRINT("throw will be fatal, halt before longjmp")); + duk_debug_halt_execution(thr, 1 /*use_prev_pc*/); + } +#endif + } + + skip_throw_intercept: +#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY || DUK_USE_DEBUGGER_PAUSE_UNCAUGHT */ +#endif /* DUK_USE_DEBUGGER_SUPPORT */ thr->heap->lj.type = lj_type; DUK_ASSERT(thr->valstack_top > thr->valstack); - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1); - DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, thr->valstack_top - 1); - DUK_TVAL_INCREF(thr, &thr->heap->lj.value1); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, thr->valstack_top - 1); /* side effects */ duk_pop((duk_context *) thr); } @@ -40430,6 +41716,23 @@ DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code) thr->heap->handling_error = 1; + if (!double_error) { + /* Allow headroom for calls during error handling (see GH-191). + * We allow space for 10 additional recursions, with one extra + * for, e.g. a print() call at the deepest level. + */ + DUK_ASSERT(thr->callstack_max == DUK_CALLSTACK_DEFAULT_MAX); + thr->callstack_max = DUK_CALLSTACK_DEFAULT_MAX + DUK_CALLSTACK_GROW_STEP + 11; + } + + DUK_ASSERT(thr->callstack_max == DUK_CALLSTACK_DEFAULT_MAX + DUK_CALLSTACK_GROW_STEP + 11); /* just making sure */ + + /* Sync so that augmentation sees up-to-date activations, NULL + * thr->ptr_curr_pc so that it's not used if side effects occur + * in augmentation or longjmp handling. + */ + duk_hthread_sync_and_null_currpc(thr); + /* * Create and push an error object onto the top of stack. * If a "double error" occurs, use a fixed error instance @@ -40490,10 +41793,11 @@ DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code) * Finally, longjmp */ - thr->heap->handling_error = 0; - duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_THROW); + thr->callstack_max = DUK_CALLSTACK_DEFAULT_MAX; /* reset callstack limit */ + thr->heap->handling_error = 0; + DUK_DDD(DUK_DDDPRINT("THROW ERROR (INTERNAL): %!iT, %!iT (after throw augment)", (duk_tval *) &thr->heap->lj.value1, (duk_tval *) &thr->heap->lj.value2)); @@ -40557,10 +41861,18 @@ DUK_INTERNAL void duk_error_throw_from_negative_rc(duk_hthread *thr, duk_ret_t r /* include removed: duk_internal.h */ -DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags) { +/* Allocate a new duk_hbuffer of a certain type and return a pointer to it + * (NULL on error). Write buffer data pointer to 'out_bufdata' (only if + * allocation successful). + */ +DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata) { duk_hbuffer *res = NULL; + duk_size_t header_size; duk_size_t alloc_size; + DUK_ASSERT(heap != NULL); + DUK_ASSERT(out_bufdata != NULL); + DUK_DDD(DUK_DDDPRINT("allocate hbuffer")); /* Size sanity check. Should not be necessary because caller is @@ -40570,12 +41882,17 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk */ if (size > DUK_HBUFFER_MAX_BYTELEN) { DUK_D(DUK_DPRINT("hbuffer alloc failed: size too large: %ld", (long) size)); - return NULL; + return NULL; /* no need to write 'out_bufdata' */ } - if (flags & DUK_BUF_FLAG_DYNAMIC) { + if (flags & DUK_BUF_FLAG_EXTERNAL) { + header_size = sizeof(duk_hbuffer_external); + alloc_size = sizeof(duk_hbuffer_external); + } if (flags & DUK_BUF_FLAG_DYNAMIC) { + header_size = sizeof(duk_hbuffer_dynamic); alloc_size = sizeof(duk_hbuffer_dynamic); } else { + header_size = sizeof(duk_hbuffer_fixed); alloc_size = sizeof(duk_hbuffer_fixed) + size; DUK_ASSERT(alloc_size >= sizeof(duk_hbuffer_fixed)); /* no wrapping */ } @@ -40588,20 +41905,30 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk /* zero everything unless requested not to do so */ #if defined(DUK_USE_ZERO_BUFFER_DATA) DUK_MEMZERO((void *) res, - (flags & DUK_BUF_FLAG_NOZERO) ? - ((flags & DUK_BUF_FLAG_DYNAMIC) ? - sizeof(duk_hbuffer_dynamic) : - sizeof(duk_hbuffer_fixed)) : - alloc_size); + (flags & DUK_BUF_FLAG_NOZERO) ? header_size : alloc_size); #else - DUK_MEMZERO((void *) res, - (flags & DUK_BUF_FLAG_DYNAMIC) ? sizeof(duk_hbuffer_dynamic) : sizeof(duk_hbuffer_fixed)); + DUK_MEMZERO((void *) res, header_size); #endif - if (flags & DUK_BUF_FLAG_DYNAMIC) { + if (flags & DUK_BUF_FLAG_EXTERNAL) { + duk_hbuffer_external *h; + h = (duk_hbuffer_external *) res; + DUK_UNREF(h); + *out_bufdata = NULL; +#if defined(DUK_USE_EXPLICIT_NULL_INIT) +#if defined(DUK_USE_HEAPPTR16) +/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */ +#else + DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap, h, NULL); +#endif +#endif + DUK_ASSERT(DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap, h) == NULL); + } else if (flags & DUK_BUF_FLAG_DYNAMIC) { duk_hbuffer_dynamic *h = (duk_hbuffer_dynamic *) res; void *ptr; + if (size > 0) { + DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL)); /* alloc external with size zero */ DUK_DDD(DUK_DDDPRINT("dynamic buffer with nonzero size, alloc actual buffer")); #ifdef DUK_USE_ZERO_BUFFER_DATA ptr = DUK_ALLOC_ZEROED(heap, size); @@ -40612,9 +41939,11 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk /* Because size > 0, NULL check is correct */ goto error; } + *out_bufdata = ptr; DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, h, ptr); } else { + *out_bufdata = NULL; #if defined(DUK_USE_EXPLICIT_NULL_INIT) #if defined(DUK_USE_HEAPPTR16) /* the compressed pointer is zeroed which maps to NULL, so nothing to do. */ @@ -40624,6 +41953,8 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk #endif DUK_ASSERT(DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, h) == NULL); } + } else { + *out_bufdata = (void *) ((duk_hbuffer_fixed *) res + 1); } DUK_HBUFFER_SET_SIZE(res, size); @@ -40631,6 +41962,11 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk DUK_HEAPHDR_SET_TYPE(&res->hdr, DUK_HTYPE_BUFFER); if (flags & DUK_BUF_FLAG_DYNAMIC) { DUK_HBUFFER_SET_DYNAMIC(res); + if (flags & DUK_BUF_FLAG_EXTERNAL) { + DUK_HBUFFER_SET_EXTERNAL(res); + } + } else { + DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL)); } DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, &res->hdr); @@ -40641,7 +41977,7 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk DUK_DD(DUK_DDPRINT("hbuffer allocation failed")); DUK_FREE(heap, res); - return NULL; + return NULL; /* no need to write 'out_bufdata' */ } /* For indirect allocs. */ @@ -40676,6 +42012,7 @@ DUK_INTERNAL void duk_hbuffer_resize(duk_hthread *thr, duk_hbuffer_dynamic *buf, DUK_ASSERT(thr != NULL); DUK_ASSERT(buf != NULL); DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf)); + DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf)); /* * Maximum size check @@ -40731,12 +42068,14 @@ DUK_INTERNAL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *buf) DUK_ASSERT(thr != NULL); DUK_ASSERT(buf != NULL); DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf)); + DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf)); duk_hbuffer_resize(thr, buf, 0); } /* include removed: duk_internal.h */ #line 2 "duk_hbufferobject_misc.c" +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len) { duk_uint_t buf_size; duk_uint_t buf_avail; @@ -40753,6 +42092,7 @@ DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_ return buf_avail >= len ? len : buf_avail; } +#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ #line 1 "duk_heap_alloc.c" /* * duk_heap allocation and freeing. @@ -40812,7 +42152,7 @@ DUK_INTERNAL void duk_free_hbuffer_inner(duk_heap *heap, duk_hbuffer *h) { DUK_ASSERT(heap != NULL); DUK_ASSERT(h != NULL); - if (DUK_HBUFFER_HAS_DYNAMIC(h)) { + if (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h)) { duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h; DUK_DDD(DUK_DDDPRINT("free dynamic buffer %p", (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g))); DUK_FREE(heap, DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g)); @@ -41273,6 +42613,7 @@ DUK_LOCAL void duk__dump_type_sizes(void) { DUK__DUMPSZ(duk_hbuffer); DUK__DUMPSZ(duk_hbuffer_fixed); DUK__DUMPSZ(duk_hbuffer_dynamic); + DUK__DUMPSZ(duk_hbuffer_external); DUK__DUMPSZ(duk_propaccessor); DUK__DUMPSZ(duk_propvalue); DUK__DUMPSZ(duk_propdesc); @@ -41409,6 +42750,10 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func, DUK_D(DUK_DPRINT("self tests passed")); #endif + /* + * Computed values (e.g. INFINITY) + */ + #ifdef DUK_USE_COMPUTED_NAN do { /* Workaround for some exotic platforms where NAN is missing @@ -41425,10 +42770,6 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func, } while (0); #endif - /* - * Computed values (e.g. INFINITY) - */ - #ifdef DUK_USE_COMPUTED_INFINITY do { /* Similar workaround for INFINITY. */ @@ -41514,7 +42855,7 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func, /* res->mark_and_sweep_trigger_counter == 0 -> now causes immediate GC; which is OK */ res->call_recursion_depth = 0; - res->call_recursion_limit = DUK_HEAP_DEFAULT_CALL_RECURSION_LIMIT; + res->call_recursion_limit = DUK_USE_NATIVE_CALL_RECLIMIT; /* XXX: use the pointer as a seed for now: mix in time at least */ @@ -41532,8 +42873,8 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func, #endif DUK_ASSERT(res->lj.type == DUK_LJ_TYPE_UNKNOWN); /* zero */ - DUK_TVAL_SET_UNDEFINED_UNUSED(&res->lj.value1); - DUK_TVAL_SET_UNDEFINED_UNUSED(&res->lj.value2); + DUK_TVAL_SET_UNDEFINED(&res->lj.value1); + DUK_TVAL_SET_UNDEFINED(&res->lj.value2); #if (DUK_STRTAB_INITIAL_SIZE < DUK_UTIL_MIN_HASH_PRIME) #error initial heap stringtable size is defined incorrectly @@ -41847,7 +43188,7 @@ DUK_LOCAL void duk__mark_hobject(duk_heap *heap, duk_hobject *h) { duk_tval *tv; tv = t->valstack; - while (tv < t->valstack_end) { + while (tv < t->valstack_top) { duk__mark_tval(heap, tv); tv++; } @@ -41892,7 +43233,7 @@ DUK_LOCAL void duk__mark_heaphdr(duk_heap *heap, duk_heaphdr *h) { } DUK_HEAPHDR_SET_REACHABLE(h); - if (heap->mark_and_sweep_recursion_depth >= DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT) { + if (heap->mark_and_sweep_recursion_depth >= DUK_USE_MARK_AND_SWEEP_RECLIMIT) { /* log this with a normal debug level because this should be relatively rare */ DUK_D(DUK_DPRINT("mark-and-sweep recursion limit reached, marking as temproot: %p", (void *) h)); DUK_HEAP_SET_MARKANDSWEEP_RECLIMIT_REACHED(heap); @@ -42808,6 +44149,52 @@ DUK_LOCAL void duk__assert_valid_refcounts(duk_heap *heap) { #endif /* DUK_USE_REFERENCE_COUNTING */ #endif /* DUK_USE_ASSERTIONS */ +/* + * Finalizer torture. Do one fake finalizer call which causes side effects + * similar to one or more finalizers on actual objects. + */ + +#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE) +DUK_LOCAL duk_ret_t duk__markandsweep_fake_finalizer(duk_context *ctx) { + DUK_D(DUK_DPRINT("fake mark-and-sweep torture finalizer executed")); + + /* Require a lot of stack to force a value stack grow/shrink. + * Recursive mark-and-sweep is prevented by allocation macros + * so this won't trigger another mark-and-sweep. + */ + duk_require_stack(ctx, 100000); + + /* XXX: do something to force a callstack grow/shrink, perhaps + * just a manual forced resize or a forced relocating realloc? + */ + + return 0; +} + +DUK_LOCAL void duk__markandsweep_torture_finalizer(duk_hthread *thr) { + duk_context *ctx; + duk_int_t rc; + + DUK_ASSERT(thr != NULL); + ctx = (duk_context *) thr; + + /* Avoid fake finalization when callstack limit has been reached. + * Otherwise a callstack limit error will be created, then refzero'ed. + */ + if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit || + thr->callstack_size + 2 * DUK_CALLSTACK_GROW_STEP >= thr->callstack_max /*approximate*/) { + DUK_D(DUK_DPRINT("call recursion depth reached, avoid fake mark-and-sweep torture finalizer")); + return; + } + + /* Run fake finalizer. Avoid creating unnecessary garbage. */ + duk_push_c_function(ctx, duk__markandsweep_fake_finalizer, 0 /*nargs*/); + rc = duk_pcall(ctx, 0 /*nargs*/); + DUK_UNREF(rc); /* ignored */ + duk_pop(ctx); +} +#endif /* DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE */ + /* * Main mark-and-sweep function. * @@ -42829,6 +44216,9 @@ DUK_INTERNAL duk_bool_t duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t * If we don't have a thread, the entire mark-and-sweep is now * skipped (although we could just skip finalizations). */ + /* XXX: if thr != NULL, the thr may still be in the middle of + * initialization; improve the thread viability test. + */ thr = duk__get_temp_hthread(heap); if (thr == NULL) { DUK_D(DUK_DPRINT("temporary hack: gc skipped because we don't have a temp thread")); @@ -42995,10 +44385,26 @@ DUK_INTERNAL duk_bool_t duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t * already happened, this is probably good enough for now. */ - if (!(flags & DUK_MS_FLAG_NO_FINALIZERS)) { - duk__run_object_finalizers(heap); +#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE) + /* Cannot simulate individual finalizers because finalize_list only + * contains objects with actual finalizers. But simulate side effects + * from finalization by doing a bogus function call and resizing the + * stacks. + */ + if (flags & DUK_MS_FLAG_NO_FINALIZERS) { + DUK_D(DUK_DPRINT("skip mark-and-sweep torture finalizer, DUK_MS_FLAG_NO_FINALIZERS is set")); + } else if (!(thr->valstack != NULL && thr->callstack != NULL && thr->catchstack != NULL)) { + DUK_D(DUK_DPRINT("skip mark-and-sweep torture finalizer, thread not yet viable")); } else { + DUK_D(DUK_DPRINT("run mark-and-sweep torture finalizer")); + duk__markandsweep_torture_finalizer(thr); + } +#endif /* DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE */ + + if (flags & DUK_MS_FLAG_NO_FINALIZERS) { DUK_D(DUK_DPRINT("finalizer run skipped because DUK_MS_FLAG_NO_FINALIZERS is set")); + } else { + duk__run_object_finalizers(heap); } /* @@ -43628,7 +45034,7 @@ DUK_LOCAL void duk__refcount_finalize_hobject(duk_hthread *thr, duk_hobject *h) duk_tval *tv; tv = t->valstack; - while (tv < t->valstack_end) { + while (tv < t->valstack_top) { duk_tval_decref(thr, tv); tv++; } @@ -43674,6 +45080,60 @@ DUK_INTERNAL void duk_heaphdr_refcount_finalize(duk_hthread *thr, duk_heaphdr *h } } +#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE) +DUK_LOCAL duk_ret_t duk__refcount_fake_finalizer(duk_context *ctx) { + DUK_UNREF(ctx); + DUK_D(DUK_DPRINT("fake refcount torture finalizer executed")); +#if 0 + DUK_DD(DUK_DDPRINT("fake torture finalizer for: %!T", duk_get_tval(ctx, 0))); +#endif + /* Require a lot of stack to force a value stack grow/shrink. */ + duk_require_stack(ctx, 100000); + + /* XXX: do something to force a callstack grow/shrink, perhaps + * just a manual forced resize? + */ + return 0; +} + +DUK_LOCAL void duk__refcount_run_torture_finalizer(duk_hthread *thr, duk_hobject *obj) { + duk_context *ctx; + duk_int_t rc; + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(obj != NULL); + ctx = (duk_context *) thr; + + /* Avoid fake finalization for the duk__refcount_fake_finalizer function + * itself, otherwise we're in infinite recursion. + */ + if (DUK_HOBJECT_HAS_NATIVEFUNCTION(obj)) { + if (((duk_hnativefunction *) obj)->func == duk__refcount_fake_finalizer) { + DUK_DD(DUK_DDPRINT("avoid fake torture finalizer for duk__refcount_fake_finalizer itself")); + return; + } + } + /* Avoid fake finalization when callstack limit has been reached. + * Otherwise a callstack limit error will be created, then refzero'ed, + * and we're in an infinite loop. + */ + if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit || + thr->callstack_size + 2 * DUK_CALLSTACK_GROW_STEP >= thr->callstack_max /*approximate*/) { + DUK_D(DUK_DPRINT("call recursion depth reached, avoid fake torture finalizer")); + return; + } + + /* Run fake finalizer. Avoid creating new refzero queue entries + * so that we are not forced into a forever loop. + */ + duk_push_c_function(ctx, duk__refcount_fake_finalizer, 1 /*nargs*/); + duk_push_hobject(ctx, obj); + rc = duk_pcall(ctx, 1); + DUK_UNREF(rc); /* ignored */ + duk_pop(ctx); +} +#endif /* DUK_USE_REFZERO_FINALIZER_TORTURE */ + /* * Refcount memory freeing loop. * @@ -43723,6 +45183,20 @@ DUK_LOCAL void duk__refzero_free_pending(duk_hthread *thr) { DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, h1) == NULL); DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(h1) == DUK_HTYPE_OBJECT); /* currently, always the case */ +#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE) + /* Torture option to shake out finalizer side effect issues: + * make a bogus function call for every finalizable object, + * essentially simulating the case where everything has a + * finalizer. + */ + DUK_DD(DUK_DDPRINT("refzero torture enabled, fake finalizer")); + DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h1) == 0); + DUK_HEAPHDR_PREINC_REFCOUNT(h1); /* bump refcount to prevent refzero during finalizer processing */ + duk__refcount_run_torture_finalizer(thr, obj); /* must never longjmp */ + DUK_HEAPHDR_PREDEC_REFCOUNT(h1); /* remove artificial bump */ + DUK_ASSERT_DISABLE(h1->h_refcount >= 0); /* refcount is unsigned, so always true */ +#endif + /* * Finalizer check. * @@ -45288,6 +46762,7 @@ DUK_INTERNAL duk_hstring *duk_heap_string_intern_u32_checked(duk_hthread *thr, d } /* find and remove string from stringtable; caller must free the string itself */ +#if defined(DUK_USE_REFERENCE_COUNTING) DUK_INTERNAL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h) { DUK_DDD(DUK_DDDPRINT("remove string from stringtable: %!O", (duk_heaphdr *) h)); @@ -45306,6 +46781,7 @@ DUK_INTERNAL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h) { #error internal error, invalid strtab options #endif } +#endif #if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_MS_STRINGTABLE_RESIZE) DUK_INTERNAL void duk_heap_force_strtab_resize(duk_heap *heap) { @@ -45579,6 +47055,7 @@ DUK_INTERNAL duk_hthread *duk_hthread_alloc(duk_heap *heap, duk_uint_t hobject_f duk__init_object_parts(heap, &res->obj, hobject_flags); #ifdef DUK_USE_EXPLICIT_NULL_INIT + res->ptr_curr_pc = NULL; res->heap = NULL; res->valstack = NULL; res->valstack_end = NULL; @@ -46002,7 +47479,7 @@ DUK_INTERNAL void duk_hobject_enumerator_create(duk_context *ctx, duk_small_uint duk_tval *tv; tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, curr, i); - if (DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { + if (DUK_TVAL_IS_UNUSED(tv)) { continue; } k = duk_heap_string_intern_u32_checked(thr, i); @@ -46042,7 +47519,7 @@ DUK_INTERNAL void duk_hobject_enumerator_create(duk_context *ctx, duk_small_uint } DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, curr, i) || - !DUK_TVAL_IS_UNDEFINED_UNUSED(&DUK_HOBJECT_E_GET_VALUE_PTR(thr->heap, curr, i)->v)); + !DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE_PTR(thr->heap, curr, i)->v)); duk_push_hstring(ctx, k); duk_push_true(ctx); @@ -46159,7 +47636,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t k = DUK_HOBJECT_E_GET_KEY(thr->heap, e, idx); DUK_ASSERT(k != NULL); DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, e, idx)); - DUK_ASSERT(!DUK_TVAL_IS_UNDEFINED_UNUSED(&DUK_HOBJECT_E_GET_VALUE(thr->heap, e, idx).v)); + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE(thr->heap, e, idx).v)); idx++; @@ -46372,7 +47849,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, d return 0; } -DUK_INTERNAL void duk_hobject_set_prototype(duk_hthread *thr, duk_hobject *h, duk_hobject *p) { +DUK_INTERNAL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p) { #ifdef DUK_USE_REFERENCE_COUNTING duk_hobject *tmp; @@ -46394,7 +47871,7 @@ DUK_INTERNAL void duk_hobject_set_prototype(duk_hthread *thr, duk_hobject *h, du * * The run-time pc2line data is bit-packed, and documented in: * - * doc/function-objects.txt + * doc/function-objects.rst */ /* include removed: duk_internal.h */ @@ -46427,7 +47904,7 @@ DUK_INTERNAL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr duk_push_dynamic_buffer(ctx, (duk_size_t) curr_offset); h_buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, -1); DUK_ASSERT(h_buf != NULL); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h_buf)); + DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h_buf) && !DUK_HBUFFER_HAS_EXTERNAL(h_buf)); hdr = (duk_uint32_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h_buf); DUK_ASSERT(hdr != NULL); @@ -46528,7 +48005,7 @@ DUK_LOCAL duk_uint_fast32_t duk__hobject_pc2line_query_raw(duk_hthread *thr, duk duk_uint_fast32_t curr_line; DUK_ASSERT(buf != NULL); - DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) buf)); + DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) buf) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) buf)); DUK_UNREF(thr); /* @@ -46627,7 +48104,7 @@ DUK_INTERNAL duk_uint_fast32_t duk_hobject_pc2line_query(duk_context *ctx, duk_i duk_get_prop_stridx(ctx, idx_func, DUK_STRIDX_INT_PC2LINE); pc2line = (duk_hbuffer_fixed *) duk_get_hbuffer(ctx, -1); if (pc2line != NULL) { - DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) pc2line)); + DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) pc2line) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) pc2line)); line = duk__hobject_pc2line_query_raw((duk_hthread *) ctx, pc2line, (duk_uint_fast32_t) pc); } else { line = 0; @@ -46643,8 +48120,8 @@ DUK_INTERNAL duk_uint_fast32_t duk_hobject_pc2line_query(duk_context *ctx, duk_i * Hobject property set/get functionality. * * This is very central functionality for size, performance, and compliance. - * It is also rather intricate; see hobject-algorithms.txt for discussion on - * the algorithms and memory-management.txt for discussion on refcounts and + * It is also rather intricate; see hobject-algorithms.rst for discussion on + * the algorithms and memory-management.rst for discussion on refcounts and * side effect issues. * * Notes: @@ -46889,7 +48366,7 @@ DUK_LOCAL void duk__compute_a_stats(duk_hthread *thr, duk_hobject *obj, duk_uint a = DUK_HOBJECT_A_GET_BASE(thr->heap, obj); for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) { duk_tval *tv = a++; - if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { + if (!DUK_TVAL_IS_UNUSED(tv)) { used++; highest_idx = i; } @@ -47320,7 +48797,7 @@ void duk__realloc_props(duk_hthread *thr, DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL); tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - if (DUK_TVAL_IS_UNDEFINED_UNUSED(tv1)) { + if (DUK_TVAL_IS_UNUSED(tv1)) { continue; } @@ -47412,7 +48889,7 @@ void duk__realloc_props(duk_hthread *thr, /* fill new entries with -unused- (required, gc reachable) */ for (i = DUK_HOBJECT_GET_ASIZE(obj); i < new_a_size; i++) { duk_tval *tv = &new_a[i]; - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); + DUK_TVAL_SET_UNUSED(tv); } } else { #ifdef DUK_USE_ASSERTIONS @@ -47423,7 +48900,7 @@ void duk__realloc_props(duk_hthread *thr, tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); /* current assertion is quite strong: decref's and set to unused */ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv)); } } #endif @@ -47566,7 +49043,7 @@ void duk__realloc_props(duk_hthread *thr, i--; DUK_ASSERT(new_e_k != NULL); DUK_ASSERT(new_e_k[i] != NULL); - DUK_HSTRING_DECREF(thr, new_e_k[i]); + DUK_HSTRING_DECREF(thr, new_e_k[i]); /* side effects */ } #ifdef DUK_USE_MARK_AND_SWEEP @@ -47973,8 +49450,6 @@ DUK_INTERNAL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobje DUK_ASSERT(obj != NULL); DUK_ASSERT(tv_out != NULL); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv_out); - /* always in entry part, no need to look up parents etc */ duk_hobject_find_existing_entry(heap, obj, DUK_HEAP_STRING_INT_VALUE(heap), &e_idx, &h_idx); if (e_idx >= 0) { @@ -47982,6 +49457,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobje DUK_TVAL_SET_TVAL(tv_out, DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx)); return 1; } + DUK_TVAL_SET_UNDEFINED(tv_out); return 0; } @@ -48251,7 +49727,7 @@ DUK_LOCAL duk_bool_t duk__get_own_property_desc_raw(duk_hthread *thr, duk_hobjec if (DUK_HOBJECT_HAS_ARRAY_PART(obj) && arr_idx != DUK__NO_ARRAY_INDEX) { if (arr_idx < DUK_HOBJECT_GET_ASIZE(obj)) { tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx); - if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { + if (!DUK_TVAL_IS_UNUSED(tv)) { DUK_DDD(DUK_DDDPRINT("-> found in array part")); if (flags & DUK__DESC_FLAG_PUSH_VALUE) { duk_push_tval(ctx, tv); @@ -48653,7 +50129,7 @@ DUK_LOCAL duk_tval *duk__getprop_shallow_fastpath_array_tval(duk_hthread *thr, d DUK_DDD(DUK_DDDPRINT("key is a valid array index and inside array part")); tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx); - if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { + if (!DUK_TVAL_IS_UNUSED(tv)) { DUK_DDD(DUK_DDDPRINT("-> fast path successful")); return tv; } @@ -48665,7 +50141,6 @@ DUK_LOCAL duk_tval *duk__getprop_shallow_fastpath_array_tval(duk_hthread *thr, d DUK_LOCAL duk_bool_t duk__putprop_shallow_fastpath_array_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key, duk_tval *tv_val, duk_propdesc *temp_desc) { duk_tval *tv; duk_uint32_t idx; - duk_tval tv_tmp; duk_uint32_t old_len, new_len; if (!(DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj) && @@ -48722,10 +50197,7 @@ DUK_LOCAL duk_bool_t duk__putprop_shallow_fastpath_array_tval(duk_hthread *thr, } tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_TVAL(tv, tv_val); - DUK_TVAL_INCREF(thr, tv); - DUK_TVAL_DECREF(thr, &tv_tmp); /* note: may trigger gc and props compaction, must be last */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */ DUK_DDD(DUK_DDDPRINT("array fast path success for index %ld", (long) idx)); return 1; @@ -49185,6 +50657,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj, default: { /* number */ DUK_DDD(DUK_DDDPRINT("base object is a number, start lookup from number prototype")); + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_obj)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_obj)); curr = thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE]; break; @@ -49580,7 +51053,6 @@ duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr, duk_uint32_t arr_idx; duk_hstring *key; duk_tval *tv; - duk_tval tv_tmp; duk_bool_t rc; DUK_DDD(DUK_DDDPRINT("new array length smaller than old (%ld -> %ld), " @@ -49628,9 +51100,7 @@ duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr, while (i > new_len) { i--; tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */ } *out_result_len = new_len; @@ -49976,10 +51446,10 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, * the fast path will incorrectly ignore them. * * This fast path could be made compliant by falling through - * to the slow path if the previous value was UNDEFINED_UNUSED. - * This would also remove the need to check for extensibility. - * Right now a non-extensible array is slower than an extensible - * one as far as writes are concerned. + * to the slow path if the previous value was UNUSED. This would + * also remove the need to check for extensibility. Right now a + * non-extensible array is slower than an extensible one as far + * as writes are concerned. * * The fast path behavior is documented in more detail here: * tests/ecmascript/test-misc-array-fast-write.js @@ -50387,14 +51857,9 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, } if (desc.e_idx >= 0) { - duk_tval tv_tmp; - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, desc.e_idx); DUK_DDD(DUK_DDDPRINT("previous entry value: %!iT", (duk_tval *) tv)); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_TVAL(tv, tv_val); - DUK_TVAL_INCREF(thr, tv); - DUK_TVAL_DECREF(thr, &tv_tmp); /* note: may trigger gc and props compaction, must be last */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */ /* don't touch property attributes or hash part */ DUK_DD(DUK_DDPRINT("put to an existing entry at index %ld -> new value %!iT", (long) desc.e_idx, (duk_tval *) tv)); @@ -50403,15 +51868,11 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, * above is pointless for them. The check could be avoided with some * refactoring but is probably not worth it. */ - duk_tval tv_tmp; DUK_ASSERT(desc.a_idx >= 0); tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, desc.a_idx); DUK_DDD(DUK_DDDPRINT("previous array value: %!iT", (duk_tval *) tv)); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_TVAL(tv, tv_val); - DUK_TVAL_INCREF(thr, tv); - DUK_TVAL_DECREF(thr, &tv_tmp); /* note: may trigger gc and props compaction, must be last */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */ DUK_DD(DUK_DDPRINT("put to an existing array entry at index %ld -> new value %!iT", (long) desc.a_idx, (duk_tval *) tv)); } @@ -50568,7 +52029,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, arr_idx); /* prev value must be unused, no decref */ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv)); DUK_TVAL_SET_TVAL(tv, tv_val); DUK_TVAL_INCREF(thr, tv); DUK_DD(DUK_DDPRINT("put to new array entry: %ld -> %!T", @@ -50749,7 +52210,6 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags) { duk_propdesc desc; duk_tval *tv; - duk_tval tv_tmp; duk_uint32_t arr_idx; duk_bool_t throw_flag; duk_bool_t force_flag; @@ -50790,9 +52250,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *o DUK_ASSERT(desc.e_idx < 0); tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, desc.a_idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */ goto success; } else { DUK_ASSERT(desc.a_idx < 0); @@ -50823,21 +52281,20 @@ DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *o tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, desc.e_idx); DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, desc.e_idx, NULL); DUK_UNREF(tmp); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); + DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */ tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, desc.e_idx); DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, desc.e_idx, NULL); DUK_UNREF(tmp); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); + DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */ } else { tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ } - /* this is not strictly necessary because if key == NULL, value MUST be ignored */ +#if 0 + /* Not strictly necessary because if key == NULL, flag MUST be ignored. */ DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, desc.e_idx, 0); - DUK_TVAL_SET_UNDEFINED_UNUSED(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx)); +#endif /* remove key */ DUK_DDD(DUK_DDDPRINT("before removing key, e_idx %ld, key %p, key at slot %p", @@ -50845,7 +52302,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *o DUK_DDD(DUK_DDDPRINT("removing key at e_idx %ld", (long) desc.e_idx)); DUK_ASSERT(key == DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx)); DUK_HOBJECT_E_SET_KEY(thr->heap, obj, desc.e_idx, NULL); - DUK_HSTRING_DECREF(thr, key); + DUK_HSTRING_DECREF(thr, key); /* side effects */ goto success; } @@ -51104,7 +52561,6 @@ DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hob duk_propdesc desc; duk_uint32_t arr_idx; duk_int_t e_idx; - duk_tval tv_tmp; duk_tval *tv1 = NULL; duk_tval *tv2 = NULL; duk_small_uint_t propflags = flags & DUK_PROPDESC_FLAGS_MASK; /* mask out flags not actually stored */ @@ -51184,7 +52640,7 @@ DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hob DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, propflags); tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx); /* new entry: previous value is garbage; set to undefined to share write_value */ - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1); + DUK_TVAL_SET_UNDEFINED(tv1); goto write_value; write_value: @@ -51194,10 +52650,7 @@ DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hob DUK_DDD(DUK_DDDPRINT("writing/updating value: %!T -> %!T", (duk_tval *) tv1, (duk_tval *) tv2)); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ goto pop_exit; pop_exit: @@ -51223,7 +52676,6 @@ DUK_INTERNAL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, duk_context *ctx = (duk_context *) thr; duk_hstring *key; duk_tval *tv1, *tv2; - duk_tval tv_tmp; DUK_DDD(DUK_DDDPRINT("define new property (internal) arr_idx fast path: thr=%p, obj=%!O, " "arr_idx=%ld, flags=0x%02lx, val=%!T", @@ -51250,10 +52702,7 @@ DUK_INTERNAL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx); tv2 = duk_require_tval(ctx, -1); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ duk_pop(ctx); /* [ ...val ] -> [ ... ] */ return; @@ -51834,7 +53283,7 @@ void duk_hobject_define_property_helper(duk_context *ctx, duk_tval *tv_tmp = duk_require_tval(ctx, idx_value); DUK_TVAL_SET_TVAL(&tv, tv_tmp); } else { - DUK_TVAL_SET_UNDEFINED_ACTUAL(&tv); /* default value */ + DUK_TVAL_SET_UNDEFINED(&tv); /* default value */ } if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(obj)) { @@ -52004,7 +53453,6 @@ void duk_hobject_define_property_helper(duk_context *ctx, } } else { duk_bool_t rc; - duk_tval tv_tmp; duk_tval *tv1; /* curr is data, desc is accessor */ @@ -52026,9 +53474,8 @@ void duk_hobject_define_property_helper(duk_context *ctx, DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); + /* XXX: just decref */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL); DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL); @@ -52069,13 +53516,13 @@ void duk_hobject_define_property_helper(duk_context *ctx, tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, curr.e_idx); DUK_UNREF(tmp); DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); + DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */ tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, curr.e_idx); DUK_UNREF(tmp); DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); + DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */ - DUK_TVAL_SET_UNDEFINED_ACTUAL(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx)); + DUK_TVAL_SET_UNDEFINED(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx)); DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx); DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(thr->heap, obj, curr.e_idx); @@ -52161,7 +53608,6 @@ void duk_hobject_define_property_helper(duk_context *ctx, if (new_flags == DUK_PROPDESC_FLAGS_WEC) { duk_tval *tv1, *tv2; - duk_tval tv_tmp; DUK_DDD(DUK_DDDPRINT("array index, new property attributes match array defaults, update in-place")); @@ -52171,10 +53617,7 @@ void duk_hobject_define_property_helper(duk_context *ctx, tv2 = duk_require_tval(ctx, idx_value); tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, curr.a_idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ goto success_exotics; } @@ -52205,7 +53648,7 @@ void duk_hobject_define_property_helper(duk_context *ctx, DUK_UNREF(tmp); DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, set); DUK_HOBJECT_INCREF_ALLOWNULL(thr, set); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); + DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */ } if (has_get) { duk_hobject *tmp; @@ -52217,21 +53660,17 @@ void duk_hobject_define_property_helper(duk_context *ctx, DUK_UNREF(tmp); DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, get); DUK_HOBJECT_INCREF_ALLOWNULL(thr, get); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); + DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */ } if (has_value) { duk_tval *tv1, *tv2; - duk_tval tv_tmp; DUK_DDD(DUK_DDDPRINT("update existing property value")); DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); tv2 = duk_require_tval(ctx, idx_value); tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ } /* @@ -52549,7 +53988,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread * */ for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) { duk_tval *tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) { + if (!DUK_TVAL_IS_UNUSED(tv)) { return 0; } } @@ -52640,11 +54079,14 @@ DUK_INTERNAL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr } DUK_MEMZERO(thr->valstack, alloc_size); thr->valstack_end = thr->valstack + DUK_VALSTACK_INITIAL_SIZE; +#if !defined(DUK_USE_PREFER_SIZE) + thr->valstack_size = DUK_VALSTACK_INITIAL_SIZE; +#endif thr->valstack_bottom = thr->valstack; thr->valstack_top = thr->valstack; for (i = 0; i < DUK_VALSTACK_INITIAL_SIZE; i++) { - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->valstack[i]); + DUK_TVAL_SET_UNDEFINED(&thr->valstack[i]); } /* callstack */ @@ -53421,6 +54863,70 @@ DUK_INTERNAL duk_activation *duk_hthread_get_current_activation(duk_hthread *thr return NULL; } } + +#if defined(DUK_USE_DEBUGGER_SUPPORT) +DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act) { + duk_instr_t *bcode; + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(act != NULL); + DUK_UNREF(thr); + + /* XXX: store 'bcode' pointer to activation for faster lookup? */ + if (act->func && DUK_HOBJECT_IS_COMPILEDFUNCTION(act->func)) { + bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) (act->func)); + return (duk_uint_fast32_t) (act->curr_pc - bcode); + } + return 0; +} +#endif /* DUK_USE_DEBUGGER_SUPPORT */ + +DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act) { + duk_instr_t *bcode; + duk_uint_fast32_t ret; + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(act != NULL); + DUK_UNREF(thr); + + if (act->func && DUK_HOBJECT_IS_COMPILEDFUNCTION(act->func)) { + bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) (act->func)); + ret = (duk_uint_fast32_t) (act->curr_pc - bcode); + if (ret > 0) { + ret--; + } + return ret; + } + return 0; +} + +/* Write bytecode executor's curr_pc back to topmost activation (if any). */ +DUK_INTERNAL void duk_hthread_sync_currpc(duk_hthread *thr) { + duk_activation *act; + + DUK_ASSERT(thr != NULL); + + if (thr->ptr_curr_pc != NULL) { + /* ptr_curr_pc != NULL only when bytecode executor is active. */ + DUK_ASSERT(thr->callstack_top > 0); + act = thr->callstack + thr->callstack_top - 1; + act->curr_pc = *thr->ptr_curr_pc; + } +} + +DUK_INTERNAL void duk_hthread_sync_and_null_currpc(duk_hthread *thr) { + duk_activation *act; + + DUK_ASSERT(thr != NULL); + + if (thr->ptr_curr_pc != NULL) { + /* ptr_curr_pc != NULL only when bytecode executor is active. */ + DUK_ASSERT(thr->callstack_top > 0); + act = thr->callstack + thr->callstack_top - 1; + act->curr_pc = *thr->ptr_curr_pc; + thr->ptr_curr_pc = NULL; + } +} #line 1 "duk_hthread_stacks.c" /* * Manipulation of thread stacks (valstack, callstack, catchstack). @@ -53930,7 +55436,7 @@ DUK_LOCAL void duk__interrupt_fixup(duk_hthread *thr, duk_hthread *entry_curr_th DUK_ASSERT(thr != NULL); DUK_ASSERT(thr->heap != NULL); -#if 0 +#if defined(DUK_USE_INTERRUPT_DEBUG_FIXUP) if (entry_curr_thread == NULL) { thr->interrupt_init = thr->interrupt_init - thr->interrupt_counter; thr->heap->inst_count_interrupt += thr->interrupt_init; @@ -54518,44 +56024,45 @@ void duk__coerce_effective_this_binding(duk_hthread *thr, duk_hobject *func, duk_idx_t idx_this) { duk_context *ctx = (duk_context *) thr; - duk_small_int_t strict; + duk_tval *tv_this; + duk_hobject *obj_global; - if (func) { - strict = DUK_HOBJECT_HAS_STRICT(func); - } else { + if (func == NULL || DUK_HOBJECT_HAS_STRICT(func)) { /* Lightfuncs are always considered strict. */ - strict = 1; + DUK_DDD(DUK_DDDPRINT("this binding: strict -> use directly")); + return; } - if (strict) { - DUK_DDD(DUK_DDDPRINT("this binding: strict -> use directly")); - } else { - duk_tval *tv_this = duk_require_tval(ctx, idx_this); - duk_hobject *obj_global; - - if (DUK_TVAL_IS_OBJECT(tv_this)) { - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, object -> use directly")); - } else if (DUK_TVAL_IS_LIGHTFUNC(tv_this)) { - /* Lightfuncs are treated like objects and not coerced. */ - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, lightfunc -> use directly")); - } else if (DUK_TVAL_IS_UNDEFINED(tv_this) || DUK_TVAL_IS_NULL(tv_this)) { - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, undefined/null -> use global object")); - obj_global = thr->builtins[DUK_BIDX_GLOBAL]; - if (obj_global) { - duk_push_hobject(ctx, obj_global); - } else { - /* - * This may only happen if built-ins are being "torn down". - * This behavior is out of specification scope. - */ - DUK_D(DUK_DPRINT("this binding: wanted to use global object, but it is NULL -> using undefined instead")); - duk_push_undefined(ctx); - } - duk_replace(ctx, idx_this); + /* XXX: byte offset */ + tv_this = thr->valstack_bottom + idx_this; + switch (DUK_TVAL_GET_TAG(tv_this)) { + case DUK_TAG_OBJECT: + case DUK_TAG_LIGHTFUNC: /* lightfuncs are treated like objects and not coerced */ + DUK_DDD(DUK_DDDPRINT("this binding: non-strict, object -> use directly")); + break; + case DUK_TAG_UNDEFINED: + case DUK_TAG_NULL: + DUK_DDD(DUK_DDDPRINT("this binding: non-strict, undefined/null -> use global object")); + obj_global = thr->builtins[DUK_BIDX_GLOBAL]; + /* XXX: avoid this check somehow */ + if (DUK_LIKELY(obj_global != NULL)) { + DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */ + DUK_TVAL_SET_OBJECT(tv_this, obj_global); + DUK_HOBJECT_INCREF(thr, obj_global); } else { - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, not object/undefined/null -> use ToObject(value)")); - duk_to_object(ctx, idx_this); /* may have side effects */ + /* This may only happen if built-ins are being "torn down". + * This behavior is out of specification scope. + */ + DUK_D(DUK_DPRINT("this binding: wanted to use global object, but it is NULL -> using undefined instead")); + DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */ + DUK_TVAL_SET_UNDEFINED(tv_this); /* nothing to incref */ } + break; + default: + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_this)); + DUK_DDD(DUK_DDDPRINT("this binding: non-strict, not object/undefined/null -> use ToObject(value)")); + duk_to_object(ctx, idx_this); /* may have side effects */ + break; } } @@ -54689,11 +56196,11 @@ void duk__adjust_valstack_and_top(duk_hthread *thr, duk_idx_t num_stack_args, du * for errhandler calls * DUK_CALL_FLAG_CONSTRUCTOR_CALL <--> for 'new Foo()' calls * - * Input stack: + * Input stack (thr): * * [ func this arg1 ... argN ] * - * Output stack: + * Output stack (thr): * * [ retval ] (DUK_EXEC_SUCCESS) * [ errobj ] (DUK_EXEC_ERROR (normal error), protected call) @@ -54705,7 +56212,7 @@ void duk__adjust_valstack_and_top(duk_hthread *thr, duk_idx_t num_stack_args, du * indices) cause an error to propagate out of this function. If there is * no catchpoint for this error, the fatal error handler is called. * - * See 'execution.txt'. + * See 'execution.rst'. * * The allowed thread states for making a call are: * - thr matches heap->curr_thread, and thr is already RUNNING @@ -54717,7 +56224,7 @@ void duk__adjust_valstack_and_top(duk_hthread *thr, duk_idx_t num_stack_args, du * avoiding a dozen helpers with awkward plumbing. * * Note: setjmp() and local variables have a nasty interaction, - * see execution.txt; non-volatile locals modified after setjmp() + * see execution.rst; non-volatile locals modified after setjmp() * call are not guaranteed to keep their value. */ @@ -54733,9 +56240,10 @@ duk_int_t duk_handle_call(duk_hthread *thr, duk_int_t entry_call_recursion_depth; duk_hthread *entry_curr_thread; duk_uint_fast8_t entry_thread_state; + duk_instr_t **entry_ptr_curr_pc; volatile duk_bool_t need_setjmp; duk_jmpbuf * volatile old_jmpbuf_ptr = NULL; /* ptr is volatile (not the target) */ - volatile duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */ + duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */ duk_idx_t idx_args; /* valstack index of start of args (arg1) (relative to entry valstack_bottom) */ duk_idx_t nargs; /* # argument registers target function wants (< 0 => "as is") */ duk_idx_t nregs; /* # total registers target function wants on entry (< 0 => "as is") */ @@ -54745,7 +56253,6 @@ duk_int_t duk_handle_call(duk_hthread *thr, duk_activation *act; duk_hobject *env; duk_jmpbuf our_jmpbuf; - duk_tval tv_tmp; duk_int_t retval = DUK_EXEC_ERROR; duk_ret_t rc; @@ -54768,12 +56275,19 @@ duk_int_t duk_handle_call(duk_hthread *thr, */ entry_valstack_bottom_index = (duk_size_t) (thr->valstack_bottom - thr->valstack); +#if defined(DUK_USE_PREFER_SIZE) entry_valstack_end = (duk_size_t) (thr->valstack_end - thr->valstack); +#else + DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size); + entry_valstack_end = thr->valstack_size; +#endif entry_callstack_top = thr->callstack_top; entry_catchstack_top = thr->catchstack_top; entry_call_recursion_depth = thr->heap->call_recursion_depth; entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */ entry_thread_state = thr->state; + entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */ + idx_func = duk_normalize_index(ctx, -num_stack_args - 2); /* idx_func must be valid, note: non-throwing! */ idx_args = idx_func + 2; /* idx_args is not necessarily valid if num_stack_args == 0 (idx_args then equals top) */ @@ -54806,6 +56320,12 @@ duk_int_t duk_handle_call(duk_hthread *thr, (void *) entry_curr_thread, (long) entry_thread_state)); + /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL + * thr->ptr_curr_pc so that it's not accidentally used with an incorrect + * activation when side effects occur. + */ + duk_hthread_sync_and_null_currpc(thr); + /* XXX: Multiple tv_func lookups are now avoided by making a local * copy of tv_func. Another approach would be to compute an offset * for tv_func from valstack bottom and recomputing the tv_func @@ -54867,6 +56387,11 @@ duk_int_t duk_handle_call(duk_hthread *thr, DUK_ASSERT(thr->callstack_top >= entry_callstack_top); DUK_ASSERT(thr->catchstack_top >= entry_catchstack_top); + /* We don't need to sync back thr->curr_pc here because the + * bytecode executor always has a setjmp catchpoint which + * does that before errors propagate to here. + */ + /* * Restore previous setjmp catchpoint */ @@ -54897,6 +56422,9 @@ duk_int_t duk_handle_call(duk_hthread *thr, DUK_DDD(DUK_DDDPRINT("call is not protected -> clean up and rethrow")); + /* Restore entry thread executor curr_pc stack frame pointer. */ + thr->ptr_curr_pc = entry_ptr_curr_pc; + DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */ thr->state = entry_thread_state; DUK_ASSERT((thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread == NULL) || /* first call */ @@ -55118,7 +56646,7 @@ duk_int_t duk_handle_call(duk_hthread *thr, #ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY act->prev_caller = NULL; #endif - act->pc = 0; + act->curr_pc = NULL; #if defined(DUK_USE_DEBUGGER_SUPPORT) act->prev_line = 0; #endif @@ -55197,6 +56725,7 @@ duk_int_t duk_handle_call(duk_hthread *thr, /* [... func this arg1 ... argN envobj] */ + act = thr->callstack + thr->callstack_top - 1; act->lex_env = env; act->var_env = env; DUK_HOBJECT_INCREF(thr, env); @@ -55261,6 +56790,9 @@ duk_int_t duk_handle_call(duk_hthread *thr, * other invalid */ + /* For native calls must be NULL so we don't sync back */ + DUK_ASSERT(thr->ptr_curr_pc == NULL); + if (func) { rc = ((duk_hnativefunction *) func)->func((duk_context *) thr); } else { @@ -55347,6 +56879,10 @@ duk_int_t duk_handle_call(duk_hthread *thr, * Shift to new valstack_bottom. */ + DUK_ASSERT(func != NULL); + DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func)); + act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func); + thr->valstack_bottom = thr->valstack_bottom + idx_args; /* keep current valstack_top */ DUK_ASSERT(thr->valstack_bottom >= thr->valstack); @@ -55368,6 +56904,8 @@ duk_int_t duk_handle_call(duk_hthread *thr, * */ + /* thr->ptr_curr_pc is set by bytecode executor early on entry */ + DUK_ASSERT(thr->ptr_curr_pc == NULL); DUK_DDD(DUK_DDDPRINT("entering bytecode execution")); duk_js_execute_bytecode(thr); DUK_DDD(DUK_DDDPRINT("returned from bytecode execution")); @@ -55456,17 +56994,15 @@ duk_int_t duk_handle_call(duk_hthread *thr, * runs etc capture even out-of-memory errors so nothing should * throw here. */ - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1); - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value1); - DUK_TVAL_DECREF(thr, &tv_tmp); - - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2); - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value2); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */ DUK_DDD(DUK_DDDPRINT("setjmp catchpoint torn down")); } + /* Restore entry thread executor curr_pc stack frame pointer. */ + thr->ptr_curr_pc = entry_ptr_curr_pc; + DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */ thr->state = (duk_uint8_t) entry_thread_state; @@ -55476,6 +57012,24 @@ duk_int_t duk_handle_call(duk_hthread *thr, thr->heap->call_recursion_depth = entry_call_recursion_depth; + /* If the debugger is active we need to force an interrupt so that + * debugger breakpoints are rechecked. This is important for function + * calls caused by side effects (e.g. when doing a DUK_OP_GETPROP), see + * GH-303. Only needed for success path, error path always causes a + * breakpoint recheck in the executor. It would be enough to set this + * only when returning to an Ecmascript activation, but setting the flag + * on every return should have no ill effect. + */ +#if defined(DUK_USE_DEBUGGER_SUPPORT) + if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) { + DUK_DD(DUK_DDPRINT("returning to ecmascript activation with debugger enabled, force interrupt")); + DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init); + thr->interrupt_init -= thr->interrupt_counter; + thr->interrupt_counter = 0; + thr->heap->dbg_force_restart = 1; + } +#endif + #if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) duk__interrupt_fixup(thr, entry_curr_thread); #endif @@ -55599,9 +57153,9 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr, duk_int_t entry_call_recursion_depth; duk_hthread *entry_curr_thread; duk_uint_fast8_t entry_thread_state; + duk_instr_t **entry_ptr_curr_pc; duk_jmpbuf *old_jmpbuf_ptr = NULL; duk_jmpbuf our_jmpbuf; - duk_tval tv_tmp; duk_idx_t idx_retbase; duk_int_t retval; duk_ret_t rc; @@ -55616,6 +57170,7 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr, entry_call_recursion_depth = thr->heap->call_recursion_depth; entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */ entry_thread_state = thr->state; + entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */ idx_retbase = duk_get_top(ctx) - num_stack_args; /* Note: not a valid stack index if num_stack_args == 0 */ /* Note: cannot portably debug print a function pointer, hence 'func' not printed! */ @@ -55825,16 +57380,14 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr, * runs etc capture even out-of-memory errors so nothing should * throw here. */ - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1); - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value1); - DUK_TVAL_DECREF(thr, &tv_tmp); - - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2); - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value2); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */ DUK_DDD(DUK_DDDPRINT("setjmp catchpoint torn down")); + /* Restore entry thread executor curr_pc stack frame pointer. */ + thr->ptr_curr_pc = entry_ptr_curr_pc; + /* XXX: because we unwind stacks above, thr->heap->curr_thread is at * risk of pointing to an already freed thread. This was indeed the * case in test-bug-multithread-valgrind.c, until duk_handle_call() @@ -55853,6 +57406,10 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr, /* stack discipline consistency check */ DUK_ASSERT(duk_get_top(ctx) == idx_retbase + num_stack_rets); + /* A debugger forced interrupt check is not needed here, as + * problematic safe calls are not caused by side effects. + */ + #if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) duk__interrupt_fixup(thr, entry_curr_thread); #endif @@ -55906,6 +57463,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, duk_activation *act; duk_hobject *env; duk_bool_t use_tailcall; + duk_instr_t **entry_ptr_curr_pc; DUK_ASSERT(thr != NULL); DUK_ASSERT(ctx != NULL); @@ -55921,7 +57479,15 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, (thr->state == DUK_HTHREAD_STATE_RUNNING && thr->heap->curr_thread == thr)); - /* if a tailcall: + /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL + * thr->ptr_curr_pc so that it's not accidentally used with an incorrect + * activation when side effects occur. If we end up not making the + * call we must restore the value. + */ + entry_ptr_curr_pc = thr->ptr_curr_pc; + duk_hthread_sync_and_null_currpc(thr); + + /* if a tail call: * - an Ecmascript activation must be on top of the callstack * - there cannot be any active catchstack entries */ @@ -55991,6 +57557,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, func = duk__nonbound_func_lookup(ctx, idx_func, &num_stack_args, &tv_func, call_flags); if (func == NULL || !DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) { DUK_DDD(DUK_DDDPRINT("final target is a lightfunc/nativefunc, cannot do ecma-to-ecma call")); + thr->ptr_curr_pc = entry_ptr_curr_pc; return 0; } /* XXX: tv_func is not actually needed */ @@ -56012,7 +57579,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, /* * Preliminary activation record and valstack manipulation. * The concrete actions depend on whether the we're dealing - * with a tailcall (reuse an existing activation), a resume, + * with a tail call (reuse an existing activation), a resume, * or a normal call. * * The basic actions, in varying order, are: @@ -56043,17 +57610,16 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, act = thr->callstack + thr->callstack_top - 1; if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) { /* See: test-bug-tailcall-preventyield-assert.c. */ - DUK_DDD(DUK_DDDPRINT("tailcall prevented by current activation having DUK_ACT_FLAG_PREVENTYIELD")); + DUK_DDD(DUK_DDDPRINT("tail call prevented by current activation having DUK_ACT_FLAG_PREVENTYIELD")); use_tailcall = 0; } else if (DUK_HOBJECT_HAS_NOTAIL(func)) { - DUK_D(DUK_DPRINT("tailcall prevented by function having a notail flag")); + DUK_D(DUK_DPRINT("tail call prevented by function having a notail flag")); use_tailcall = 0; } } if (use_tailcall) { duk_tval *tv1, *tv2; - duk_tval tv_tmp; duk_size_t cs_index; duk_int_t i_stk; /* must be signed for loop structure */ duk_idx_t i_arg; @@ -56065,10 +57631,10 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, * the current activation (or simulate an unwind). In particular, the * current activation must be closed, otherwise something like * test-bug-reduce-judofyr.js results. Also catchstack needs be unwound - * because there may be non-error-catching label entries in valid tailcalls. + * because there may be non-error-catching label entries in valid tail calls. */ - DUK_DDD(DUK_DDDPRINT("is tailcall, reusing activation at callstack top, at index %ld", + DUK_DDD(DUK_DDDPRINT("is tail call, reusing activation at callstack top, at index %ld", (long) (thr->callstack_top - 1))); /* 'act' already set above */ @@ -56104,7 +57670,10 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, #ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY act->prev_caller = NULL; #endif - act->pc = 0; /* don't want an intermediate exposed state with invalid pc */ + DUK_ASSERT(func != NULL); + DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func)); + /* don't want an intermediate exposed state with invalid pc */ + act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func); #if defined(DUK_USE_DEBUGGER_SUPPORT) act->prev_line = 0; #endif @@ -56116,7 +57685,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, #ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY #ifdef DUK_USE_TAILCALL -#error incorrect options: tailcalls enabled with function caller property +#error incorrect options: tail calls enabled with function caller property #endif /* XXX: this doesn't actually work properly for tail calls, so * tail calls are disabled when DUK_USE_NONSTD_FUNC_CALLER_PROPERTY @@ -56133,7 +57702,6 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, DUK_ASSERT(DUK_ACT_GET_FUNC(act) == func); /* already updated */ DUK_ASSERT(act->var_env == NULL); /* already NULLed (by unwind) */ DUK_ASSERT(act->lex_env == NULL); /* already NULLed (by unwind) */ - DUK_ASSERT(act->pc == 0); /* already zeroed */ act->idx_bottom = entry_valstack_bottom_index; /* tail call -> reuse current "frame" */ DUK_ASSERT(nregs >= 0); #if 0 /* topmost activation idx_retval is considered garbage, no need to init */ @@ -56148,7 +57716,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, * [ ... this_old | (crud) func this_new arg1 ... argN ] * --> [ ... this_new | arg1 ... argN ] * - * For tailcalling to work properly, the valstack bottom must not grow + * For tail calling to work properly, the valstack bottom must not grow * here; otherwise crud would accumulate on the valstack. */ @@ -56156,10 +57724,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, tv2 = thr->valstack_bottom + idx_func + 1; DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); /* tv1 is -below- valstack_bottom */ DUK_ASSERT(tv2 >= thr->valstack_bottom && tv2 < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ for (i_arg = 0; i_arg < idx_args; i_arg++) { /* XXX: block removal API primitive */ @@ -56173,7 +57738,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, /* [ ... this_new | arg1 ... argN ] */ } else { - DUK_DDD(DUK_DDDPRINT("not a tailcall, pushing a new activation to callstack, to index %ld", + DUK_DDD(DUK_DDDPRINT("not a tail call, pushing a new activation to callstack, to index %ld", (long) (thr->callstack_top))); duk_hthread_callstack_grow(thr); @@ -56208,7 +57773,9 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, #ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY act->prev_caller = NULL; #endif - act->pc = 0; + DUK_ASSERT(func != NULL); + DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func)); + act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func); #if defined(DUK_USE_DEBUGGER_SUPPORT) act->prev_line = 0; #endif @@ -56279,6 +57846,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, /* [... arg1 ... argN envobj] */ + act = thr->callstack + thr->callstack_top - 1; act->lex_env = env; act->var_env = env; DUK_HOBJECT_INCREF(thr, act->lex_env); @@ -56336,7 +57904,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, * Recursion limits are in key functions to prevent arbitrary C recursion: * function body parsing, statement parsing, and expression parsing. * - * See doc/compiler.txt for discussion on the design. + * See doc/compiler.rst for discussion on the design. * * A few typing notes: * @@ -56465,10 +58033,11 @@ duk_regconst_t duk__ivalue_toregconst_raw(duk_compiler_ctx *comp_ctx, duk_small_uint_t flags); DUK_LOCAL_DECL duk_reg_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x); #if 0 /* unused */ -DUK_LOCAL_DECL duk_reg_t duk__ivalue_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x); +DUK_LOCAL_DECL duk_reg_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x); #endif DUK_LOCAL_DECL void duk__ivalue_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_int_t forced_reg); DUK_LOCAL_DECL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x); +DUK_LOCAL_DECL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x); /* identifier handling */ DUK_LOCAL_DECL duk_reg_t duk__lookup_active_register_binding(duk_compiler_ctx *comp_ctx); @@ -56491,17 +58060,22 @@ DUK_LOCAL_DECL void duk__expr(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_s DUK_LOCAL_DECL void duk__exprtop(duk_compiler_ctx *ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); /* convenience helpers */ -DUK_LOCAL_DECL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); #if 0 /* unused */ -DUK_LOCAL_DECL duk_reg_t duk__expr_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); +DUK_LOCAL_DECL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); +#endif +#if 0 /* unused */ +DUK_LOCAL_DECL duk_reg_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); #endif DUK_LOCAL_DECL void duk__expr_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg); DUK_LOCAL_DECL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); +#if 0 /* unused */ +DUK_LOCAL_DECL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); +#endif DUK_LOCAL_DECL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); DUK_LOCAL_DECL void duk__expr_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); DUK_LOCAL_DECL duk_reg_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); #if 0 /* unused */ -DUK_LOCAL_DECL duk_reg_t duk__exprtop_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); +DUK_LOCAL_DECL duk_reg_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); #endif DUK_LOCAL_DECL void duk__exprtop_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg); DUK_LOCAL_DECL duk_regconst_t duk__exprtop_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); @@ -56551,7 +58125,7 @@ DUK_LOCAL_DECL duk_int_t duk__parse_func_like_fnum(duk_compiler_ctx *comp_ctx, d /* XXX: actually single step levels would work just fine, clean up */ -/* binding power "levels" (see doc/compiler.txt) */ +/* binding power "levels" (see doc/compiler.rst) */ #define DUK__BP_INVALID 0 /* always terminates led() */ #define DUK__BP_EOF 2 #define DUK__BP_CLOSING 4 /* token closes expression, e.g. ')', ']' */ @@ -56738,7 +58312,7 @@ DUK_LOCAL void duk__advance_helper(duk_compiler_ctx *comp_ctx, duk_small_int_t e * We can use either 't' or 't_nores'; the latter would not * recognize keywords. Some keywords can be followed by a * RegExp (e.g. "return"), so using 't' is better. This is - * not trivial, see doc/compiler.txt. + * not trivial, see doc/compiler.rst. */ regexp = 1; @@ -56848,7 +58422,7 @@ DUK_LOCAL void duk__init_func_valstack_slots(duk_compiler_ctx *comp_ctx) { func->labelinfos_idx = entry_top + 5; func->h_labelinfos = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, entry_top + 5); DUK_ASSERT(func->h_labelinfos != NULL); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(func->h_labelinfos)); + DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(func->h_labelinfos) && !DUK_HBUFFER_HAS_EXTERNAL(func->h_labelinfos)); duk_push_array(ctx); func->argnames_idx = entry_top + 6; @@ -56924,9 +58498,9 @@ DUK_LOCAL duk_int_t duk__cleanup_varmap(duk_compiler_ctx *comp_ctx) { tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h_varmap, i); if (!DUK_TVAL_IS_NUMBER(tv)) { DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv)); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); DUK_HOBJECT_E_SET_KEY(thr->heap, h_varmap, i, NULL); DUK_HSTRING_DECREF(thr, h_key); + /* when key is NULL, value is garbage so no need to set */ } else { ret++; } @@ -58096,11 +59670,35 @@ DUK_LOCAL void duk__peephole_optimize_bytecode(duk_compiler_ctx *comp_ctx) { * code (it is checked as it is used). */ #define DUK__IVAL_FLAG_ALLOW_CONST (1 << 0) /* allow a constant to be returned */ -#define DUK__IVAL_FLAG_REQUIRE_TEMP (1 << 1) /* require a (mutable) temporary as a result */ +#define DUK__IVAL_FLAG_REQUIRE_TEMP (1 << 1) /* require a (mutable) temporary as a result (or a const if allowed) */ #define DUK__IVAL_FLAG_REQUIRE_SHORT (1 << 2) /* require a short (8-bit) reg/const which fits into bytecode B/C slot */ /* XXX: some code might benefit from DUK__SETTEMP_IFTEMP(ctx,x) */ +#if 0 /* enable manually for dumping */ +#define DUK__DUMP_ISPEC(compctx,ispec) do { duk__dump_ispec((compctx), (ispec)); } while (0) +#define DUK__DUMP_IVALUE(compctx,ivalue) do { duk__dump_ivalue((compctx), (ivalue)); } while (0) + +DUK_LOCAL void duk__dump_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *x) { + DUK_D(DUK_DPRINT("ispec dump: t=%ld regconst=0x%08lx, valstack_idx=%ld, value=%!T", + (long) x->t, (unsigned long) x->regconst, (long) x->valstack_idx, + duk_get_tval((duk_context *) comp_ctx->thr, x->valstack_idx))); +} +DUK_LOCAL void duk__dump_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { + DUK_D(DUK_DPRINT("ivalue dump: t=%ld op=%ld " + "x1={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T} " + "x2={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T}", + (long) x->t, (long) x->op, + (long) x->x1.t, (unsigned long) x->x1.regconst, (long) x->x1.valstack_idx, + duk_get_tval((duk_context *) comp_ctx->thr, x->x1.valstack_idx), + (long) x->x2.t, (unsigned long) x->x2.regconst, (long) x->x2.valstack_idx, + duk_get_tval((duk_context *) comp_ctx->thr, x->x2.valstack_idx))); +} +#else +#define DUK__DUMP_ISPEC(comp_ctx,x) do {} while (0) +#define DUK__DUMP_IVALUE(comp_ctx,x) do {} while (0) +#endif + DUK_LOCAL void duk__copy_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *src, duk_ispec *dst) { duk_context *ctx = (duk_context *) comp_ctx->thr; @@ -58336,6 +59934,7 @@ duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx, duk_double_t dval; duk_int32_t ival; + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); dval = DUK_TVAL_GET_NUMBER(tv); @@ -58367,26 +59966,34 @@ duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx, } /* end switch */ } case DUK_ISPEC_REGCONST: { - if ((x->regconst & DUK__CONST_MARKER) && !(flags & DUK__IVAL_FLAG_ALLOW_CONST)) { - duk_reg_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, x->regconst); - return (duk_regconst_t) dest; - } else { - if (forced_reg >= 0) { - if (x->regconst != (duk_regconst_t) forced_reg) { - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, forced_reg, x->regconst); - } - return (duk_regconst_t) forced_reg; + if (forced_reg >= 0) { + if (x->regconst & DUK__CONST_MARKER) { + duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, forced_reg, x->regconst); + } else if (x->regconst != (duk_regconst_t) forced_reg) { + duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, forced_reg, x->regconst); } else { - if ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) && !DUK__ISTEMP(comp_ctx, x->regconst)) { - duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, (duk_regconst_t) dest, x->regconst); - return (duk_regconst_t) dest; - } else { - return x->regconst; - } + ; /* already in correct reg */ } + return (duk_regconst_t) forced_reg; } + + DUK_ASSERT(forced_reg < 0); + if (x->regconst & DUK__CONST_MARKER) { + if (!(flags & DUK__IVAL_FLAG_ALLOW_CONST)) { + duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx); + duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, x->regconst); + return (duk_regconst_t) dest; + } + return x->regconst; + } + + DUK_ASSERT(forced_reg < 0 && !(x->regconst & DUK__CONST_MARKER)); + if ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) && !DUK__ISTEMP(comp_ctx, x->regconst)) { + duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx); + duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, (duk_regconst_t) dest, x->regconst); + return (duk_regconst_t) dest; + } + return x->regconst; } default: { break; @@ -58685,7 +60292,7 @@ DUK_LOCAL duk_reg_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x) } #if 0 /* unused */ -DUK_LOCAL duk_reg_t duk__ivalue_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { +DUK_LOCAL duk_reg_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/); } #endif @@ -58699,6 +60306,10 @@ DUK_LOCAL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); } +DUK_LOCAL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { + return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/); +} + /* The issues below can be solved with better flags */ /* XXX: many operations actually want toforcedtemp() -- brand new temp? */ @@ -59663,7 +61274,7 @@ DUK_LOCAL void duk__expr_nud(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { * such that parsing ends at an LPAREN (CallExpression) but not at * a PERIOD or LBRACKET (MemberExpression). * - * See doc/compiler.txt for discussion on the parsing approach, + * See doc/compiler.rst for discussion on the parsing approach, * and testcases/test-dev-new.js for a bunch of documented tests. */ @@ -60512,7 +62123,7 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i * Truthval determines when to skip right-hand-side. * For logical AND truthval=1, for logical OR truthval=0. * - * See doc/compiler.txt for discussion on compiling logical + * See doc/compiler.rst for discussion on compiling logical * AND and OR expressions. The approach here is very simplistic, * generating extra jumps and multiple evaluations of truth values, * but generates code on-the-fly with only local back-patching. @@ -60558,11 +62169,21 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i * Syntactically valid left-hand-side forms which are not accepted as * left-hand-side values (e.g. as in "f() = 1") must NOT cause a * SyntaxError, but rather a run-time ReferenceError. + * + * Assignment expression value is conceptually the LHS/RHS value + * copied into a fresh temporary so that it won't change even if + * LHS/RHS values change (e.g. when they're identifiers). Doing this + * concretely produces inefficient bytecode, so we try to avoid the + * extra temporary for some known-to-be-safe cases. Currently the + * only safe case we detect is a "top level assignment", for example + * "x = y + z;", where the assignment expression value is ignored. + * See: test-dev-assign-expr.js and test-bug-assign-mutate-gh381.js. */ { duk_small_uint_t args_op = args >> 8; duk_small_uint_t args_rbp = args & 0xff; + duk_bool_t toplevel_assign; /* XXX: here we need to know if 'left' is left-hand-side compatible. * That information is no longer available from current expr parsing @@ -60570,44 +62191,89 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i * some other means. */ + /* A top-level assignment is e.g. "x = y;". For these it's safe + * to use the RHS as-is as the expression value, even if the RHS + * is a reg-bound identifier. The RHS ('res') is right associative + * so it has consumed all other assignment level operations; the + * only relevant lower binding power construct is comma operator + * which will ignore the expression value provided here. + */ + toplevel_assign = (comp_ctx->curr_func.nud_count == 1 && /* one token before */ + comp_ctx->curr_func.led_count == 1); /* one operator (= assign) */ + DUK_DDD(DUK_DDDPRINT("assignment: nud_count=%ld, led_count=%ld, toplevel_assign=%ld", + (long) comp_ctx->curr_func.nud_count, + (long) comp_ctx->curr_func.led_count, + (long) toplevel_assign)); + if (left->t == DUK_IVAL_VAR) { duk_hstring *h_varname; duk_reg_t reg_varbind; duk_regconst_t rc_varname; - duk_regconst_t rc_res; - duk_reg_t reg_temp; - /* already in fluly evaluated form */ - DUK_ASSERT(left->x1.t == DUK_ISPEC_VALUE); + DUK_ASSERT(left->x1.t == DUK_ISPEC_VALUE); /* LHS is already side effect free */ - duk__expr_toreg(comp_ctx, res, args_rbp /*rbp_flags*/); - DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); + /* Keep the RHS as an unresolved ivalue for now, so it + * can be a plain value or a unary/binary operation here. + * We resolve it before finishing but doing it later allows + * better bytecode in some cases. + */ + duk__expr(comp_ctx, res, args_rbp /*rbp_flags*/); h_varname = duk_get_hstring(ctx, left->x1.valstack_idx); DUK_ASSERT(h_varname != NULL); - - /* E5 Section 11.13.1 (and others for other assignments), step 4 */ if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) { + /* E5 Section 11.13.1 (and others for other assignments), step 4 */ goto syntax_error_lvalue; } - duk_dup(ctx, left->x1.valstack_idx); (void) duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname); - DUK_DDD(DUK_DDDPRINT("assign to '%!O' -> reg_varbind=%ld, rc_varname=%ld", - (duk_heaphdr *) h_varname, (long) reg_varbind, (long) rc_varname)); - if (args_op == DUK_OP_NONE) { - rc_res = res->x1.regconst; + if (toplevel_assign) { + /* Any 'res' will do. */ + DUK_DDD(DUK_DDDPRINT("plain assignment, toplevel assign, use as is")); + } else { + /* 'res' must be a plain ivalue, and not register-bound variable. */ + DUK_DDD(DUK_DDDPRINT("plain assignment, not toplevel assign, ensure not a reg-bound identifier")); + if (res->t != DUK_IVAL_PLAIN || (res->x1.t == DUK_ISPEC_REGCONST && + (res->x1.regconst & DUK__CONST_MARKER) == 0 && + !DUK__ISTEMP(comp_ctx, res->x1.regconst))) { + duk__ivalue_totempconst(comp_ctx, res); + } + } } else { - reg_temp = DUK__ALLOCTEMP(comp_ctx); + duk__ivalue_toregconst(comp_ctx, res); + DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); + if (reg_varbind >= 0) { + duk_reg_t reg_res; + + if (toplevel_assign) { + /* 'reg_varbind' is the operation result and can also + * become the expression value for top level assignments + * such as: "var x; x += y;". + */ + reg_res = reg_varbind; + } else { + /* Not safe to use 'reg_varbind' as assignment expression + * value, so go through a temp. + */ + reg_res = DUK__ALLOCTEMP(comp_ctx); + } + duk__emit_a_b_c(comp_ctx, args_op, - (duk_regconst_t) reg_temp, + (duk_regconst_t) reg_res, (duk_regconst_t) reg_varbind, res->x1.regconst); + res->x1.regconst = (duk_regconst_t) reg_res; } else { + /* When LHS is not register bound, always go through a + * temporary. No optimization for top level assignment. + */ + duk_reg_t reg_temp; + reg_temp = DUK__ALLOCTEMP(comp_ctx); + duk__emit_a_bc(comp_ctx, DUK_OP_GETVAR, (duk_regconst_t) reg_temp, @@ -60617,40 +62283,57 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i (duk_regconst_t) reg_temp, (duk_regconst_t) reg_temp, res->x1.regconst); + res->x1.regconst = (duk_regconst_t) reg_temp; } - rc_res = (duk_regconst_t) reg_temp; + + DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); } + /* At this point 'res' holds the potential expression value. + * It can be basically any ivalue here, including a reg-bound + * identifier (if code above deems it safe) or a unary/binary + * operation. Operations must be resolved to a side effect free + * plain value, and the side effects must happen exactly once. + */ + if (reg_varbind >= 0) { - duk__emit_a_bc(comp_ctx, - DUK_OP_LDREG, - (duk_regconst_t) reg_varbind, - rc_res); + if (res->t != DUK_IVAL_PLAIN) { + /* Resolve 'res' directly into the LHS binding, and use + * that as the expression value if safe. If not safe, + * resolve to a temp/const and copy to LHS. + */ + if (toplevel_assign) { + duk__ivalue_toforcedreg(comp_ctx, res, (duk_int_t) reg_varbind); + } else { + duk__ivalue_totempconst(comp_ctx, res); + duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */ + duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind); + } + } else { + /* Use 'res' as the expression value (it's side effect + * free and may be a plain value, a register, or a + * constant) and write it to the LHS binding too. + */ + duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */ + duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind); + } } else { - /* Only a reg fits into 'A' and reg_res may be a const in - * straight assignment. + /* Only a reg fits into 'A' so coerce 'res' into a register + * for PUTVAR. * * XXX: here the current A/B/C split is suboptimal: we could * just use 9 bits for reg_res (and support constants) and 17 * instead of 18 bits for the varname const index. */ - if (DUK__ISCONST(comp_ctx, rc_res)) { - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_bc(comp_ctx, - DUK_OP_LDCONST, - (duk_regconst_t) reg_temp, - rc_res); - rc_res = (duk_regconst_t) reg_temp; - } + + duk__ivalue_toreg(comp_ctx, res); duk__emit_a_bc(comp_ctx, DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE, - rc_res, + res->x1.regconst, rc_varname); } - res->t = DUK_IVAL_PLAIN; - res->x1.t = DUK_ISPEC_REGCONST; - res->x1.regconst = rc_res; + /* 'res' contains expression value */ } else if (left->t == DUK_IVAL_PROP) { /* E5 Section 11.13.1 (and others) step 4 never matches for prop writes -> no check */ duk_reg_t reg_obj; @@ -60964,15 +62647,17 @@ DUK_LOCAL void duk__exprtop(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_sma * Each helper needs at least 2-3 calls to make it worth while to wrap. */ +#if 0 /* unused */ DUK_LOCAL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { duk__expr(comp_ctx, res, rbp_flags); return duk__ivalue_toreg(comp_ctx, res); } +#endif #if 0 /* unused */ -DUK_LOCAL duk_reg_t duk__expr_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { +DUK_LOCAL duk_reg_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { duk__expr(comp_ctx, res, rbp_flags); - return duk__ivalue_totempreg(comp_ctx, res); + return duk__ivalue_totemp(comp_ctx, res); } #endif @@ -60987,6 +62672,13 @@ DUK_LOCAL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_iv return duk__ivalue_toregconst(comp_ctx, res); } +#if 0 /* unused */ +DUK_LOCAL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { + duk__expr(comp_ctx, res, rbp_flags); + return duk__ivalue_totempconst(comp_ctx, res); +} +#endif + DUK_LOCAL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { duk__expr(comp_ctx, res, rbp_flags); duk__ivalue_toplain(comp_ctx, res); @@ -61003,9 +62695,9 @@ DUK_LOCAL duk_reg_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *r } #if 0 /* unused */ -DUK_LOCAL duk_reg_t duk__exprtop_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { +DUK_LOCAL duk_reg_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { duk__exprtop(comp_ctx, res, rbp_flags); - return duk__ivalue_totempreg(comp_ctx, res); + return duk__ivalue_totemp(comp_ctx, res); } #endif @@ -61172,7 +62864,7 @@ DUK_LOCAL void duk__parse_var_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) { duk_hthread *thr = comp_ctx->thr; duk_context *ctx = (duk_context *) thr; - duk_int_t pc_v34_lhs; /* start variant 3/4 left-hand-side code (L1 in doc/compiler.txt example) */ + duk_int_t pc_v34_lhs; /* start variant 3/4 left-hand-side code (L1 in doc/compiler.rst example) */ duk_reg_t temp_reset; /* knock back "next temp" to this whenever possible */ duk_reg_t reg_temps; /* preallocated temporaries (2) for variants 3 and 4 */ @@ -61199,7 +62891,7 @@ DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, * Parsing these without arbitrary lookahead or backtracking is relatively * tricky but we manage to do so for now. * - * See doc/compiler.txt for a detailed discussion of control flow + * See doc/compiler.rst for a detailed discussion of control flow * issues, evaluation order issues, etc. */ @@ -61426,7 +63118,7 @@ DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, * * Variables set before entering here: * - * pc_v34_lhs: insert a "JUMP L2" here (see doc/compiler.txt example). + * pc_v34_lhs: insert a "JUMP L2" here (see doc/compiler.rst example). * reg_temps + 0: iteration target value (written to LHS) * reg_temps + 1: enumerator object */ @@ -61441,7 +63133,7 @@ DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, /* First we need to insert a jump in the middle of previously * emitted code to get the control flow right. No jumps can - * cross the position where the jump is inserted. See doc/compiler.txt + * cross the position where the jump is inserted. See doc/compiler.rst * for discussion on the intricacies of control flow and side effects * for variants 3 and 4. */ @@ -61556,7 +63248,7 @@ DUK_LOCAL void duk__parse_switch_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re * only process the first match before switching to a "propagation" mode * where case values are no longer evaluated * - * See E5 Section 12.11. Also see doc/compiler.txt for compilation + * See E5 Section 12.11. Also see doc/compiler.rst for compilation * discussion. */ @@ -61899,12 +63591,6 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re DUK_ERROR(thr, DUK_ERR_SYNTAX_ERROR, DUK_STR_INVALID_RETURN); } - /* Use a fast return when possible. A fast return does not cause a longjmp() - * unnecessarily. A fast return can be done when no TCF catchers are active - * (this includes 'try' and 'with' statements). Active label catches do not - * prevent a fast return; they're unwound on return automatically. - */ - ret_flags = 0; if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || /* explicit semi follows */ @@ -61926,10 +63612,10 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re pc_after_expr = duk__get_current_pc(comp_ctx); /* Tail call check: if last opcode emitted was CALL(I), and - * the context allows it, change the CALL(I) to a tailcall. - * This doesn't guarantee that a tailcall will be allowed at + * the context allows it, change the CALL(I) to a tail call. + * This doesn't guarantee that a tail call will be allowed at * runtime, so the RETURN must still be emitted. (Duktape - * 0.10.0 avoided this and simulated a RETURN if a tailcall + * 0.10.0 avoided this and simulated a RETURN if a tail call * couldn't be used at runtime; but this didn't work * correctly with a thread yield/resume, see * test-bug-tailcall-thread-yield-resume.js for discussion.) @@ -61940,7 +63626,7 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re * { return 1; }), 2' the last opcode emitted is CALL (no * bytecode is emitted for '2') but 'rc_val' indicates * constant '2'. Similarly if '2' is replaced by a register - * bound variable, no opcodes are emitted but tailcall would + * bound variable, no opcodes are emitted but tail call would * be incorrect. * * This is tricky and easy to get wrong. It would be best to @@ -61985,21 +63671,6 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re ret_flags = DUK_BC_RETURN_FLAG_HAVE_RETVAL; } - /* XXX: For now, "fast returns" are disabled. The compiler doesn't track - * label site depth so when it emits a fast return, it doesn't know whether - * label sites exist or not. Label sites are emitted for e.g. for loops, - * so it's probably quite relevant to handle them in the executor's fast - * return handler. - */ -#if 0 - if (comp_ctx->curr_func.catch_depth == 0) { - DUK_DDD(DUK_DDDPRINT("fast return allowed -> use fast return")); - ret_flags |= DUK_BC_RETURN_FLAG_FAST; - } else { - DUK_DDD(DUK_DDDPRINT("fast return not allowed -> use slow return")); - } -#endif - duk__emit_a_b(comp_ctx, DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A, (duk_regconst_t) ret_flags /*flags*/, @@ -62039,7 +63710,7 @@ DUK_LOCAL void duk__parse_try_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) /* * See the following documentation for discussion: * - * doc/execution.txt: control flow details + * doc/execution.rst: control flow details * * Try, catch, and finally "parts" are Blocks, not Statements, so * they must always be delimited by curly braces. This is unlike e.g. @@ -62491,7 +64162,7 @@ DUK_LOCAL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_ * * https://bugs.ecmascript.org/show_bug.cgi?id=8 * - * See doc/compiler.txt for details. + * See doc/compiler.rst for details. */ DUK_DDD(DUK_DDDPRINT("do statement")); DUK_ASSERT(label_id >= 0); @@ -62580,13 +64251,13 @@ DUK_LOCAL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_ break; } case DUK_TOK_DEBUGGER: { + duk__advance(comp_ctx); #if defined(DUK_USE_DEBUGGER_SUPPORT) DUK_DDD(DUK_DDDPRINT("debugger statement: debugging enabled, emit debugger opcode")); duk__emit_extraop_only(comp_ctx, DUK_EXTRAOP_DEBUGGER); #else DUK_DDD(DUK_DDDPRINT("debugger statement: ignored")); #endif - duk__advance(comp_ctx); stmt_flags = DUK__HAS_TERM; break; } @@ -63477,16 +65148,16 @@ DUK_LOCAL void duk__parse_func_body(duk_compiler_ctx *comp_ctx, duk_bool_t expec * (directly or via a jump) */ - DUK_ASSERT(comp_ctx->curr_func.catch_depth == 0); /* fast returns are always OK here */ + DUK_ASSERT(comp_ctx->curr_func.catch_depth == 0); if (reg_stmt_value >= 0) { duk__emit_a_b(comp_ctx, DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A, - (duk_regconst_t) (DUK_BC_RETURN_FLAG_HAVE_RETVAL | DUK_BC_RETURN_FLAG_FAST) /*flags*/, + (duk_regconst_t) DUK_BC_RETURN_FLAG_HAVE_RETVAL /*flags*/, (duk_regconst_t) reg_stmt_value /*reg*/); } else { duk__emit_a_b(comp_ctx, DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A, - (duk_regconst_t) DUK_BC_RETURN_FLAG_FAST /*flags*/, + (duk_regconst_t) 0 /*flags*/, (duk_regconst_t) 0 /*reg(ignored)*/); } @@ -63859,7 +65530,7 @@ DUK_LOCAL duk_ret_t duk__js_compile_raw(duk_context *ctx) { comp_ctx->tok12_idx = entry_top + 2; comp_ctx->tok21_idx = entry_top + 3; comp_ctx->tok22_idx = entry_top + 4; - comp_ctx->recursion_limit = DUK_COMPILER_RECURSION_LIMIT; + comp_ctx->recursion_limit = DUK_USE_COMPILER_RECLIMIT; /* comp_ctx->lex has been pre-initialized by caller: it has been * zeroed and input/input_length has been set. @@ -63871,7 +65542,7 @@ DUK_LOCAL duk_ret_t duk__js_compile_raw(duk_context *ctx) { comp_ctx->lex.buf_idx = entry_top + 0; comp_ctx->lex.buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, entry_top + 0); DUK_ASSERT(comp_ctx->lex.buf != NULL); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(comp_ctx->lex.buf)); + DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(comp_ctx->lex.buf) && !DUK_HBUFFER_HAS_EXTERNAL(comp_ctx->lex.buf)); comp_ctx->lex.token_limit = DUK_COMPILER_TOKEN_LIMIT; lex_pt->offset = 0; @@ -64015,22 +65686,24 @@ DUK_INTERNAL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_buffer /* include removed: duk_internal.h */ /* - * Local declarations + * Local declarations. */ -DUK_LOCAL_DECL void duk__reconfig_valstack(duk_hthread *thr, duk_size_t act_idx, duk_small_uint_t retval_count); +DUK_LOCAL_DECL void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_size_t entry_callstack_top); /* * Arithmetic, binary, and logical helpers. * * Note: there is no opcode for logical AND or logical OR; this is on * purpose, because the evalution order semantics for them make such - * opcodes pretty pointless (short circuiting means they are most - * comfortably implemented as jumps). However, a logical NOT opcode + * opcodes pretty pointless: short circuiting means they are most + * comfortably implemented as jumps. However, a logical NOT opcode * is useful. * * Note: careful with duk_tval pointers here: they are potentially - * invalidated by any DECREF and almost any API call. + * invalidated by any DECREF and almost any API call. It's still + * preferable to work without making a copy but that's not always + * possible. */ DUK_LOCAL duk_double_t duk__compute_mod(duk_double_t d1, duk_double_t d2) { @@ -64080,7 +65753,6 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_ if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) { duk_int64_t v1, v2, v3; duk_int32_t v3_hi; - duk_tval tv_tmp; duk_tval *tv_z; /* Input values are signed 48-bit so we can detect overflow @@ -64093,10 +65765,7 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_ v3_hi = (duk_int32_t) (v3 >> 32); if (DUK_LIKELY(v3_hi >= -0x8000LL && v3_hi <= 0x7fffLL)) { tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_FASTINT(tv_z, v3); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */ return; } else { /* overflow, fall through */ @@ -64106,7 +65775,6 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_ #endif /* DUK_USE_FASTINT */ if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) { - duk_tval tv_tmp; duk_tval *tv_z; du.d = DUK_TVAL_GET_NUMBER(tv_x) + DUK_TVAL_GET_NUMBER(tv_y); @@ -64114,10 +65782,7 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_ DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_NUMBER(tv_z, du.d); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */ return; } @@ -64170,7 +65835,6 @@ DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tva */ duk_context *ctx = (duk_context *) thr; - duk_tval tv_tmp; duk_tval *tv_z; duk_double_t d1, d2; duk_double_union du; @@ -64247,10 +65911,7 @@ DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tva v3_hi = (duk_int32_t) (v3 >> 32); if (DUK_LIKELY(v3_hi >= -0x8000LL && v3_hi <= 0x7fffLL)) { tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_FASTINT(tv_z, v3); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */ return; } /* fall through if overflow etc */ @@ -64303,10 +65964,7 @@ DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tva DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_NUMBER(tv_z, du.d); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */ } DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_fast_t idx_z, duk_small_uint_fast_t opcode) { @@ -64321,7 +65979,6 @@ DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_t */ duk_context *ctx = (duk_context *) thr; - duk_tval tv_tmp; duk_tval *tv_z; duk_int32_t i1, i2, i3; duk_uint32_t u1, u2, u3; @@ -64409,15 +66066,14 @@ DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_t #if defined(DUK_USE_FASTINT) /* Result is always fastint compatible. */ - /* XXX: set 32-bit result (but must handle signed and unsigned) */ + /* XXX: Set 32-bit result (but must then handle signed and + * unsigned results separately). + */ fi3 = (duk_int64_t) i3; fastint_result_set: tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_FASTINT(tv_z, fi3); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, fi3); /* side effects */ #else d3 = (duk_double_t) i3; @@ -64426,10 +66082,7 @@ DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_t DUK_ASSERT_DOUBLE_IS_NORMALIZED(d3); /* always normalized */ tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_NUMBER(tv_z, d3); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d3); /* side effects */ #endif } @@ -64510,7 +66163,6 @@ DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_small_u */ duk_context *ctx = (duk_context *) thr; - duk_tval tv_tmp; duk_tval *tv_z; duk_int32_t i1, i2; #if !defined(DUK_USE_FASTINT) @@ -64540,10 +66192,7 @@ DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_small_u #if defined(DUK_USE_FASTINT) /* Result is always fastint compatible. */ tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_FASTINT_I32(tv_z, i2); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv_z, i2); /* side effects */ #else d2 = (duk_double_t) i2; @@ -64551,10 +66200,7 @@ DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_small_u DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2); /* always normalized */ tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_NUMBER(tv_z, d2); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d2); /* side effects */ #endif } @@ -64563,7 +66209,6 @@ DUK_LOCAL void duk__vm_logical_not(duk_hthread *thr, duk_tval *tv_x, duk_tval *t * E5 Section 11.4.9 */ - duk_tval tv_tmp; duk_bool_t res; DUK_ASSERT(thr != NULL); @@ -64579,37 +66224,35 @@ DUK_LOCAL void duk__vm_logical_not(duk_hthread *thr, duk_tval *tv_x, duk_tval *t res = duk_js_toboolean(tv_x); /* does not modify tv_x */ DUK_ASSERT(res == 0 || res == 1); res ^= 1; - DUK_TVAL_SET_TVAL(&tv_tmp, tv_z); - DUK_TVAL_SET_BOOLEAN(tv_z, res); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv_z, res); /* side effects */ } /* - * Longjmp handler for the bytecode executor (and a bunch of static - * helpers for it). + * Longjmp and other control flow transfer for the bytecode executor. * - * Any type of longjmp() can be caught here, including intra-function - * longjmp()s like 'break', 'continue', (slow) 'return', 'yield', etc. + * The longjmp handler can handle all longjmp types: error, yield, and + * resume (pseudotypes are never actually thrown). * - * Error policy: should not ordinarily throw errors. Errors thrown - * will bubble outwards. - * - * Returns: - * 0 restart execution - * 1 bytecode executor finished - * 2 rethrow longjmp + * Error policy for longjmp: should not ordinarily throw errors; if errors + * occur (e.g. due to out-of-memory) they bubble outwards rather than being + * handled recursively. */ -/* XXX: duk_api operations for cross-thread reg manipulation? */ -/* XXX: post-condition: value stack must be correct; for ecmascript functions, clamped to 'nregs' */ - #define DUK__LONGJMP_RESTART 0 /* state updated, restart bytecode execution */ -#define DUK__LONGJMP_FINISHED 1 /* exit bytecode executor with return value */ -#define DUK__LONGJMP_RETHROW 2 /* exit bytecode executor by rethrowing an error to caller */ +#define DUK__LONGJMP_RETHROW 1 /* exit bytecode executor by rethrowing an error to caller */ -/* only called when act_idx points to an Ecmascript function */ -DUK_LOCAL void duk__reconfig_valstack(duk_hthread *thr, duk_size_t act_idx, duk_small_uint_t retval_count) { +#define DUK__RETHAND_RESTART 0 /* state updated, restart bytecode execution */ +#define DUK__RETHAND_FINISHED 1 /* exit bytecode execution with return value */ + +/* XXX: optimize reconfig valstack operations so that resize, clamp, and setting + * top are combined into one pass. + */ + +/* Reconfigure value stack for return to an Ecmascript function at 'act_idx'. */ +DUK_LOCAL void duk__reconfig_valstack_ecma_return(duk_hthread *thr, duk_size_t act_idx) { + duk_activation *act; duk_hcompiledfunction *h_func; + duk_idx_t clamp_top; DUK_ASSERT(thr != NULL); DUK_ASSERT_DISABLE(act_idx >= 0); /* unsigned */ @@ -64617,91 +66260,109 @@ DUK_LOCAL void duk__reconfig_valstack(duk_hthread *thr, duk_size_t act_idx, duk_ DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + act_idx))); DUK_ASSERT_DISABLE(thr->callstack[act_idx].idx_retval >= 0); /* unsigned */ - thr->valstack_bottom = thr->valstack + thr->callstack[act_idx].idx_bottom; - - /* clamp so that retval is at the top (retval_count == 1) or register just before - * intended retval is at the top (retval_count == 0, happens e.g. with 'finally'). - */ - duk_set_top((duk_context *) thr, - (duk_idx_t) (thr->callstack[act_idx].idx_retval - - thr->callstack[act_idx].idx_bottom + - retval_count)); - - /* - * When returning to an Ecmascript function, extend the valstack - * top to 'nregs' always. + /* Clamp so that values at 'clamp_top' and above are wiped and won't + * retain reachable garbage. Then extend to 'nregs' because we're + * returning to an Ecmascript function. */ - h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(thr->callstack + act_idx); + act = thr->callstack + act_idx; + h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); + + thr->valstack_bottom = thr->valstack + act->idx_bottom; + DUK_ASSERT(act->idx_retval >= act->idx_bottom); + clamp_top = (duk_idx_t) (act->idx_retval - act->idx_bottom + 1); /* +1 = one retval */ + duk_set_top((duk_context *) thr, clamp_top); + act = NULL; (void) duk_valstack_resize_raw((duk_context *) thr, - (thr->valstack_bottom - thr->valstack) + /* bottom of current func */ - h_func->nregs + /* reg count */ - DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */ - DUK_VSRESIZE_FLAG_SHRINK | /* flags */ + (thr->valstack_bottom - thr->valstack) + /* bottom of current func */ + h_func->nregs + /* reg count */ + DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */ + DUK_VSRESIZE_FLAG_SHRINK | /* flags */ 0 /* no compact */ | DUK_VSRESIZE_FLAG_THROW); duk_set_top((duk_context *) thr, h_func->nregs); } -DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx, duk_bool_t is_finally) { - duk_context *ctx = (duk_context *) thr; - duk_tval tv_tmp; +DUK_LOCAL void duk__reconfig_valstack_ecma_catcher(duk_hthread *thr, duk_size_t act_idx, duk_size_t cat_idx) { + duk_activation *act; + duk_catcher *cat; + duk_hcompiledfunction *h_func; + duk_idx_t clamp_top; + + DUK_ASSERT(thr != NULL); + DUK_ASSERT_DISABLE(act_idx >= 0); /* unsigned */ + DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + act_idx) != NULL); + DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + act_idx))); + DUK_ASSERT_DISABLE(thr->callstack[act_idx].idx_retval >= 0); /* unsigned */ + + act = thr->callstack + act_idx; + cat = thr->catchstack + cat_idx; + h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); + + thr->valstack_bottom = thr->valstack + act->idx_bottom; + DUK_ASSERT(cat->idx_base >= act->idx_bottom); + clamp_top = (duk_idx_t) (cat->idx_base - act->idx_bottom + 2); /* +2 = catcher value, catcher lj_type */ + duk_set_top((duk_context *) thr, clamp_top); + act = NULL; + cat = NULL; + + (void) duk_valstack_resize_raw((duk_context *) thr, + (thr->valstack_bottom - thr->valstack) + /* bottom of current func */ + h_func->nregs + /* reg count */ + DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */ + DUK_VSRESIZE_FLAG_SHRINK | /* flags */ + 0 /* no compact */ | + DUK_VSRESIZE_FLAG_THROW); + + duk_set_top((duk_context *) thr, h_func->nregs); +} + +/* Set catcher regs: idx_base+0 = value, idx_base+1 = lj_type. */ +DUK_LOCAL void duk__set_catcher_regs(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) { duk_tval *tv1; - DUK_DDD(DUK_DDDPRINT("handling catch/finally, cat_idx=%ld, is_finally=%ld", - (long) cat_idx, (long) is_finally)); - - /* - * Set caught value and longjmp type to catcher regs. - */ - - DUK_DDD(DUK_DDDPRINT("writing catch registers: idx_base=%ld -> %!T, idx_base+1=%ld -> %!T", - (long) thr->catchstack[cat_idx].idx_base, - (duk_tval *) &thr->heap->lj.value1, - (long) (thr->catchstack[cat_idx].idx_base + 1), - (duk_tval *) &thr->heap->lj.value2)); + DUK_ASSERT(thr != NULL); + DUK_ASSERT(tv_val_unstable != NULL); tv1 = thr->valstack + thr->catchstack[cat_idx].idx_base; - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, &thr->heap->lj.value1); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_ASSERT(tv1 < thr->valstack_top); + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */ tv1 = thr->valstack + thr->catchstack[cat_idx].idx_base + 1; - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_NUMBER(tv1, (duk_double_t) thr->heap->lj.type); /* XXX: set int */ - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv1)); /* no need to incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_ASSERT(tv1 < thr->valstack_top); - /* - * Unwind catchstack and callstack. - * - * The 'cat_idx' catcher is always kept, even when executing finally. - */ +#if defined(DUK_USE_FASTINT) + DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) lj_type); /* side effects */ +#else + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, (duk_double_t) lj_type); /* side effects */ +#endif +} + +DUK_LOCAL void duk__handle_catch(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) { + duk_context *ctx; + duk_activation *act; + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(tv_val_unstable != NULL); + ctx = (duk_context *) thr; + + duk__set_catcher_regs(thr, cat_idx, tv_val_unstable, lj_type); duk_hthread_catchstack_unwind(thr, cat_idx + 1); duk_hthread_callstack_unwind(thr, thr->catchstack[cat_idx].callstack_index + 1); - /* - * Reconfigure valstack to 'nregs' (this is always the case for - * Ecmascript functions). - */ - DUK_ASSERT(thr->callstack_top >= 1); DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL); DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))); - thr->valstack_bottom = thr->valstack + (thr->callstack + thr->callstack_top - 1)->idx_bottom; - duk_set_top((duk_context *) thr, ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))->nregs); + duk__reconfig_valstack_ecma_catcher(thr, thr->callstack_top - 1, cat_idx); - /* - * Reset PC: resume execution from catch or finally jump slot. - */ - - (thr->callstack + thr->callstack_top - 1)->pc = - thr->catchstack[cat_idx].pc_base + (is_finally ? 1 : 0); + DUK_ASSERT(thr->callstack_top >= 1); + act = thr->callstack + thr->callstack_top - 1; + act->curr_pc = thr->catchstack[cat_idx].pc_base + 0; /* +0 = catch */ + act = NULL; /* * If entering a 'catch' block which requires an automatic @@ -64713,8 +66374,7 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx * which implies the binding is not deletable. */ - if (!is_finally && DUK_CAT_HAS_CATCH_BINDING_ENABLED(&thr->catchstack[cat_idx])) { - duk_activation *act; + if (DUK_CAT_HAS_CATCH_BINDING_ENABLED(&thr->catchstack[cat_idx])) { duk_hobject *new_env; duk_hobject *act_lex_env; @@ -64747,7 +66407,7 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV), act_lex_env); - new_env = duk_require_hobject(ctx, -1); + new_env = duk_get_hobject(ctx, -1); DUK_ASSERT(new_env != NULL); DUK_DDD(DUK_DDDPRINT("new_env allocated: %!iO", (duk_heaphdr *) new_env)); @@ -64759,7 +66419,7 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx DUK_ASSERT(thr->catchstack[cat_idx].h_varname != NULL); duk_push_hstring(ctx, thr->catchstack[cat_idx].h_varname); - duk_push_tval(ctx, &thr->heap->lj.value1); + duk_push_tval(ctx, thr->valstack + thr->catchstack[cat_idx].idx_base); duk_xdef_prop(ctx, -3, DUK_PROPDESC_FLAGS_W); /* writable, not configurable */ act = thr->callstack + thr->callstack_top - 1; @@ -64773,28 +66433,47 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx DUK_DDD(DUK_DDDPRINT("new_env finished: %!iO", (duk_heaphdr *) new_env)); } - if (is_finally) { - DUK_CAT_CLEAR_FINALLY_ENABLED(&thr->catchstack[cat_idx]); - } else { - DUK_CAT_CLEAR_CATCH_ENABLED(&thr->catchstack[cat_idx]); - } + DUK_CAT_CLEAR_CATCH_ENABLED(&thr->catchstack[cat_idx]); } -DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx) { +DUK_LOCAL void duk__handle_finally(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) { duk_activation *act; - /* no callstack changes, no value stack changes */ + DUK_ASSERT(thr != NULL); + DUK_ASSERT(tv_val_unstable != NULL); + + duk__set_catcher_regs(thr, cat_idx, tv_val_unstable, lj_type); + + duk_hthread_catchstack_unwind(thr, cat_idx + 1); /* cat_idx catcher is kept, even for finally */ + duk_hthread_callstack_unwind(thr, thr->catchstack[cat_idx].callstack_index + 1); + + DUK_ASSERT(thr->callstack_top >= 1); + DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL); + DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))); + + duk__reconfig_valstack_ecma_catcher(thr, thr->callstack_top - 1, cat_idx); + + DUK_ASSERT(thr->callstack_top >= 1); + act = thr->callstack + thr->callstack_top - 1; + act->curr_pc = thr->catchstack[cat_idx].pc_base + 1; /* +1 = finally */ + act = NULL; + + DUK_CAT_CLEAR_FINALLY_ENABLED(&thr->catchstack[cat_idx]); +} + +DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx, duk_small_uint_t lj_type) { + duk_activation *act; DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->callstack_top >= 1); + DUK_ASSERT(thr->callstack_top >= 1); act = thr->callstack + thr->callstack_top - 1; DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL); DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(act))); /* +0 = break, +1 = continue */ - act->pc = thr->catchstack[cat_idx].pc_base + (thr->heap->lj.type == DUK_LJ_TYPE_CONTINUE ? 1 : 0); + act->curr_pc = thr->catchstack[cat_idx].pc_base + (lj_type == DUK_LJ_TYPE_CONTINUE ? 1 : 0); act = NULL; /* invalidated */ duk_hthread_catchstack_unwind(thr, cat_idx + 1); /* keep label catcher */ @@ -64802,38 +66481,32 @@ DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx) { /* valstack should not need changes */ #if defined(DUK_USE_ASSERTIONS) + DUK_ASSERT(thr->callstack_top >= 1); act = thr->callstack + thr->callstack_top - 1; DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) == (duk_size_t) ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act))->nregs); #endif } -/* Note: called for DUK_LJ_TYPE_YIELD and for DUK_LJ_TYPE_RETURN, when a - * return terminates a thread and yields to the resumer. +/* Called for handling both a longjmp() with type DUK_LJ_TYPE_YIELD and + * when a RETURN opcode terminates a thread and yields to the resumer. */ -DUK_LOCAL void duk__handle_yield(duk_hthread *thr, duk_hthread *resumer, duk_size_t act_idx) { - duk_tval tv_tmp; +DUK_LOCAL void duk__handle_yield(duk_hthread *thr, duk_hthread *resumer, duk_size_t act_idx, duk_tval *tv_val_unstable) { duk_tval *tv1; - /* this may also be called for DUK_LJ_TYPE_RETURN; this is OK as long as - * lj.value1 is correct. - */ - + DUK_ASSERT(thr != NULL); + DUK_ASSERT(resumer != NULL); + DUK_ASSERT(tv_val_unstable != NULL); DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack + act_idx) != NULL); DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(resumer->callstack + act_idx))); /* resume caller must be an ecmascript func */ - DUK_DDD(DUK_DDDPRINT("resume idx_retval is %ld", (long) resumer->callstack[act_idx].idx_retval)); - tv1 = resumer->valstack + resumer->callstack[act_idx].idx_retval; /* return value from Duktape.Thread.resume() */ - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, &thr->heap->lj.value1); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */ duk_hthread_callstack_unwind(resumer, act_idx + 1); /* unwind to 'resume' caller */ /* no need to unwind catchstack */ - duk__reconfig_valstack(resumer, act_idx, 1); /* 1 = have retval */ + duk__reconfig_valstack_ecma_return(resumer, act_idx); /* caller must change active thread, and set thr->resumer to NULL */ } @@ -64842,7 +66515,6 @@ DUK_LOCAL duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, duk_hthread *entry_thread, duk_size_t entry_callstack_top) { - duk_tval tv_tmp; duk_size_t entry_callstack_index; duk_small_uint_t retval = DUK__LONGJMP_RESTART; @@ -64855,6 +66527,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, /* 'thr' is the current thread, as no-one resumes except us and we * switch 'thr' in that case. */ + DUK_ASSERT(thr == thr->heap->curr_thread); /* * (Re)try handling the longjmp. @@ -64959,16 +66632,13 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, tv = resumee->valstack + resumee->callstack[act_idx].idx_retval; /* return value from Duktape.Thread.yield() */ DUK_ASSERT(tv >= resumee->valstack && tv < resumee->valstack_top); tv2 = &thr->heap->lj.value1; - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_TVAL(tv, tv2); - DUK_TVAL_INCREF(thr, tv); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv2); /* side effects */ duk_hthread_callstack_unwind(resumee, act_idx + 1); /* unwind to 'yield' caller */ /* no need to unwind catchstack */ - duk__reconfig_valstack(resumee, act_idx, 1); /* 1 = have retval */ + duk__reconfig_valstack_ecma_return(resumee, act_idx); resumee->resumer = thr; resumee->state = DUK_HTHREAD_STATE_RUNNING; @@ -64992,7 +66662,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, /* resumee: [... initial_func undefined(= this) resume_value ] */ - call_flags = DUK_CALL_FLAG_IS_RESUME; /* is resume, not a tailcall */ + call_flags = DUK_CALL_FLAG_IS_RESUME; /* is resume, not a tail call */ setup_rc = duk_handle_ecma_call_setup(resumee, 1, /* num_stack_args */ @@ -65068,7 +66738,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, DUK_DD(DUK_DDPRINT("-> yield an error, converted to a throw in the resumer, propagate")); goto check_longjmp; } else { - duk__handle_yield(thr, resumer, resumer->callstack_top - 2); + duk__handle_yield(thr, resumer, resumer->callstack_top - 2, &thr->heap->lj.value1); thr->state = DUK_HTHREAD_STATE_YIELDED; thr->resumer = NULL; @@ -65086,201 +66756,6 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, break; /* never here */ } - case DUK_LJ_TYPE_RETURN: { - /* - * Four possible outcomes: - * * A 'finally' in the same function catches the 'return'. - * (or) - * * The return happens at the entry level of the bytecode - * executor, so return from the executor (in C stack). - * (or) - * * There is a calling (Ecmascript) activation in the call - * stack => return to it. - * (or) - * * There is no calling activation, and the thread is - * terminated. There is always a resumer in this case, - * which gets the return value similarly to a 'yield' - * (except that the current thread can no longer be - * resumed). - */ - - duk_tval *tv1; - duk_hthread *resumer; - duk_catcher *cat; - duk_size_t orig_callstack_index; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(thr->catchstack != NULL); - - /* XXX: does not work if thr->catchstack is NULL */ - /* XXX: does not work if thr->catchstack is allocated but lowest pointer */ - - cat = thr->catchstack + thr->catchstack_top - 1; /* may be < thr->catchstack initially */ - DUK_ASSERT(thr->callstack_top > 0); /* ensures callstack_top - 1 >= 0 */ - orig_callstack_index = thr->callstack_top - 1; - - while (cat >= thr->catchstack) { - if (cat->callstack_index != orig_callstack_index) { - break; - } - if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF && - DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - /* 'finally' catches */ - duk__handle_catch_or_finally(thr, - cat - thr->catchstack, - 1); /* is_finally */ - - DUK_DD(DUK_DDPRINT("-> return caught by a finally (in the same function), restart execution")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - cat--; - } - /* if out of catchstack, cat = thr->catchstack - 1 */ - - DUK_DD(DUK_DDPRINT("no catcher in catch stack, return to calling activation / yield")); - - /* return to calling activation (if any) */ - - if (thr == entry_thread && - thr->callstack_top == entry_callstack_top) { - /* return to the bytecode executor caller */ - - duk_push_tval((duk_context *) thr, &thr->heap->lj.value1); - - /* [ ... retval ] */ - - DUK_DD(DUK_DDPRINT("-> return propagated up to entry level, exit bytecode executor")); - retval = DUK__LONGJMP_FINISHED; - goto wipe_and_return; - } - - if (thr->callstack_top >= 2) { - /* there is a caller; it MUST be an Ecmascript caller (otherwise it would - * match entry level check) - */ - - DUK_DDD(DUK_DDDPRINT("slow return to Ecmascript caller, idx_retval=%ld, lj_value1=%!T", - (long) (thr->callstack + thr->callstack_top - 2)->idx_retval, - (duk_tval *) &thr->heap->lj.value1)); - - DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */ - - tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval; - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, &thr->heap->lj.value1); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ - - DUK_DDD(DUK_DDDPRINT("return value at idx_retval=%ld is %!T", - (long) (thr->callstack + thr->callstack_top - 2)->idx_retval, - (duk_tval *) (thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval))); - - duk_hthread_catchstack_unwind(thr, (cat - thr->catchstack) + 1); /* leave 'cat' as top catcher (also works if catchstack exhausted) */ - duk_hthread_callstack_unwind(thr, thr->callstack_top - 1); - duk__reconfig_valstack(thr, thr->callstack_top - 1, 1); /* new top, i.e. callee */ - - DUK_DD(DUK_DDPRINT("-> return not caught, restart execution in caller")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - - DUK_DD(DUK_DDPRINT("no calling activation, thread finishes (similar to yield)")); - - DUK_ASSERT(thr->resumer != NULL); - DUK_ASSERT(thr->resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */ - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1) != NULL && - DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1)) && - ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1))->func == duk_bi_thread_resume); /* Duktape.Thread.resume() */ - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2) != NULL && - DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2))); /* an Ecmascript function */ - DUK_ASSERT_DISABLE((thr->resumer->callstack + thr->resumer->callstack_top - 2)->idx_retval >= 0); /* unsigned */ - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); - DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED); - - resumer = thr->resumer; - - duk__handle_yield(thr, resumer, resumer->callstack_top - 2); - - duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */ - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED); - - thr->resumer = NULL; - resumer->state = DUK_HTHREAD_STATE_RUNNING; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumer); -#if 0 - thr = resumer; /* not needed */ -#endif - - DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - - case DUK_LJ_TYPE_BREAK: - case DUK_LJ_TYPE_CONTINUE: { - /* - * Find a matching label catcher or 'finally' catcher in - * the same function. - * - * A label catcher must always exist and will match unless - * a 'finally' captures the break/continue first. It is the - * compiler's responsibility to ensure that labels are used - * correctly. - */ - - duk_catcher *cat; - duk_size_t orig_callstack_index; - duk_uint_t lj_label; - - cat = thr->catchstack + thr->catchstack_top - 1; - orig_callstack_index = cat->callstack_index; - - DUK_ASSERT(DUK_TVAL_IS_NUMBER(&thr->heap->lj.value1)); - lj_label = (duk_uint_t) DUK_TVAL_GET_NUMBER(&thr->heap->lj.value1); - - DUK_DDD(DUK_DDDPRINT("handling break/continue with label=%ld, callstack index=%ld", - (long) lj_label, (long) cat->callstack_index)); - - while (cat >= thr->catchstack) { - if (cat->callstack_index != orig_callstack_index) { - break; - } - DUK_DDD(DUK_DDDPRINT("considering catcher %ld: type=%ld label=%ld", - (long) (cat - thr->catchstack), - (long) DUK_CAT_GET_TYPE(cat), - (long) DUK_CAT_GET_LABEL(cat))); - - if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF && - DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - /* finally catches */ - duk__handle_catch_or_finally(thr, - cat - thr->catchstack, - 1); /* is_finally */ - - DUK_DD(DUK_DDPRINT("-> break/continue caught by a finally (in the same function), restart execution")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL && - (duk_uint_t) DUK_CAT_GET_LABEL(cat) == lj_label) { - /* found label */ - duk__handle_label(thr, - cat - thr->catchstack); - - DUK_DD(DUK_DDPRINT("-> break/continue caught by a label catcher (in the same function), restart execution")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - cat--; - } - - /* should never happen, but be robust */ - DUK_D(DUK_DPRINT("break/continue not caught by anything in the current function (should never happen)")); - goto convert_to_internal_error; - } - case DUK_LJ_TYPE_THROW: { /* * Three possible outcomes: @@ -65312,12 +66787,12 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, } if (DUK_CAT_HAS_CATCH_ENABLED(cat)) { - /* try catches */ DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF); - duk__handle_catch_or_finally(thr, - cat - thr->catchstack, - 0); /* is_finally */ + duk__handle_catch(thr, + cat - thr->catchstack, + &thr->heap->lj.value1, + DUK_LJ_TYPE_THROW); DUK_DD(DUK_DDPRINT("-> throw caught by a 'catch' clause, restart execution")); retval = DUK__LONGJMP_RESTART; @@ -65328,9 +66803,10 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF); DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat)); - duk__handle_catch_or_finally(thr, - cat - thr->catchstack, - 1); /* is_finally */ + duk__handle_finally(thr, + cat - thr->catchstack, + &thr->heap->lj.value1, + DUK_LJ_TYPE_THROW); DUK_DD(DUK_DDPRINT("-> throw caught by a 'finally' clause, restart execution")); retval = DUK__LONGJMP_RESTART; @@ -65355,7 +66831,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, /* Note: MUST NOT wipe_and_return here, as heap->lj must remain intact */ } - DUK_DD(DUK_DDPRINT("not caught by current thread, yield error to resumer")); + DUK_DD(DUK_DDPRINT("-> throw not caught by current thread, yield error to resumer and recheck longjmp")); /* not caught by current thread, thread terminates (yield error to resumer); * note that this may cause a cascade if the resumer terminates with an uncaught @@ -65387,11 +66863,10 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, goto check_longjmp; } - case DUK_LJ_TYPE_NORMAL: { - DUK_D(DUK_DPRINT("caught DUK_LJ_TYPE_NORMAL, should never happen, treat as internal error")); - goto convert_to_internal_error; - } - + case DUK_LJ_TYPE_BREAK: /* pseudotypes, not used in actual longjmps */ + case DUK_LJ_TYPE_CONTINUE: + case DUK_LJ_TYPE_RETURN: + case DUK_LJ_TYPE_NORMAL: default: { /* should never happen, but be robust */ DUK_D(DUK_DPRINT("caught unknown longjmp type %ld, treat as internal error", (long) thr->heap->lj.type)); @@ -65407,84 +66882,250 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN; thr->heap->lj.iserror = 0; - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1); - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ - - DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2); - DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value2); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */ just_return: return retval; convert_to_internal_error: /* This could also be thrown internally (set the error, goto check_longjmp), - * but it's better for internal errors to bubble outwards. + * but it's better for internal errors to bubble outwards so that we won't + * infinite loop in this catchpoint. */ DUK_ERROR(thr, DUK_ERR_INTERNAL_ERROR, DUK_STR_INTERNAL_ERROR_EXEC_LONGJMP); DUK_UNREACHABLE(); return retval; } -/* XXX: Disabled for 1.0 release. This needs to handle unwinding for label - * sites (which are created for explicit labels but also for control statements - * like for-loops). At that point it's quite close to the "slow return" handler - * except for longjmp(). Perhaps all returns could initially be handled as fast - * returns and only converted to longjmp()s when basic handling won't do? +/* Handle a BREAK/CONTINUE opcode. Avoid using longjmp() for BREAK/CONTINUE + * handling because it has a measurable performance impact in ordinary + * environments and an extreme impact in Emscripten (GH-342). */ -#if 0 -/* Try a fast return. Return false if fails, so that a slow return can be done - * instead. - */ -DUK_LOCAL -duk_bool_t duk__handle_fast_return(duk_hthread *thr, - duk_tval *tv_retval, - duk_hthread *entry_thread, - duk_size_t entry_callstack_top) { - duk_tval tv_tmp; - duk_tval *tv1; +DUK_LOCAL void duk__handle_break_or_continue(duk_hthread *thr, + duk_uint_t label_id, + duk_small_uint_t lj_type) { + duk_catcher *cat; + duk_size_t orig_callstack_index; - /* retval == NULL indicates 'undefined' return value */ + DUK_ASSERT(thr != NULL); - if (thr == entry_thread && thr->callstack_top == entry_callstack_top) { - DUK_DDD(DUK_DDDPRINT("reject fast return: return would exit bytecode executor to caller")); - return 0; - } - if (thr->callstack_top <= 1) { - DUK_DDD(DUK_DDDPRINT("reject fast return: there is no caller in this callstack (thread yield)")); - return 0; - } - - /* There is a caller, and it must be an Ecmascript caller (otherwise - * it would have matched the entry level check). + /* + * Find a matching label catcher or 'finally' catcher in + * the same function. + * + * A label catcher must always exist and will match unless + * a 'finally' captures the break/continue first. It is the + * compiler's responsibility to ensure that labels are used + * correctly. */ - DUK_ASSERT(thr->callstack_top >= 2); - DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */ - tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval; - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - if (tv_retval) { - DUK_TVAL_SET_TVAL(tv1, tv_retval); - DUK_TVAL_INCREF(thr, tv1); - } else { - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1); - /* no need to incref */ + /* Note: thr->catchstack_top may be 0, so that cat < thr->catchstack + * initially. This is OK and intended. + */ + cat = thr->catchstack + thr->catchstack_top - 1; + DUK_ASSERT(thr->callstack_top > 0); + orig_callstack_index = thr->callstack_top - 1; + + DUK_DDD(DUK_DDDPRINT("handling break/continue with label=%ld, callstack index=%ld", + (long) label_id, (long) cat->callstack_index)); + + while (cat >= thr->catchstack) { + if (cat->callstack_index != orig_callstack_index) { + break; + } + DUK_DDD(DUK_DDDPRINT("considering catcher %ld: type=%ld label=%ld", + (long) (cat - thr->catchstack), + (long) DUK_CAT_GET_TYPE(cat), + (long) DUK_CAT_GET_LABEL(cat))); + + if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF && + DUK_CAT_HAS_FINALLY_ENABLED(cat)) { + duk_size_t cat_idx; + duk_tval tv_tmp; + + cat_idx = (duk_size_t) (cat - thr->catchstack); /* get before side effects */ + +#if defined(DUK_USE_FASTINT) + DUK_TVAL_SET_FASTINT_U32(&tv_tmp, (duk_uint32_t) label_id); +#else + DUK_TVAL_SET_NUMBER(&tv_tmp, (duk_double_t) label_id); +#endif + duk__handle_finally(thr, cat_idx, &tv_tmp, lj_type); + + DUK_DD(DUK_DDPRINT("-> break/continue caught by 'finally', restart execution")); + return; + } + if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL && + (duk_uint_t) DUK_CAT_GET_LABEL(cat) == label_id) { + duk_size_t cat_idx; + + cat_idx = (duk_size_t) (cat - thr->catchstack); + duk__handle_label(thr, cat_idx, lj_type); + + DUK_DD(DUK_DDPRINT("-> break/continue caught by a label catcher (in the same function), restart execution")); + return; + } + cat--; } - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ - /* No catchstack to unwind. */ -#if 0 - duk_hthread_catchstack_unwind(thr, (cat - thr->catchstack) + 1); /* leave 'cat' as top catcher (also works if catchstack exhausted) */ -#endif - duk_hthread_callstack_unwind(thr, thr->callstack_top - 1); - duk__reconfig_valstack(thr, thr->callstack_top - 1, 1); /* new top, i.e. callee */ - - DUK_DDD(DUK_DDDPRINT("fast return accepted")); - return 1; + /* should never happen, but be robust */ + DUK_D(DUK_DPRINT("-> break/continue not caught by anything in the current function (should never happen), throw internal error")); + DUK_ERROR(thr, DUK_ERR_INTERNAL_ERROR, DUK_STR_INTERNAL_ERROR); + return; } + +/* Handle a RETURN opcode. Avoid using longjmp() for return handling because + * it has a measurable performance impact in ordinary environments and an extreme + * impact in Emscripten (GH-342). Return value is on value stack top. + */ +DUK_LOCAL duk_small_uint_t duk__handle_return(duk_hthread *thr, + duk_hthread *entry_thread, + duk_size_t entry_callstack_top) { + duk_tval *tv1; + duk_tval *tv2; + duk_hthread *resumer; + duk_catcher *cat; + duk_size_t new_cat_top; + duk_size_t orig_callstack_index; + + /* We can directly access value stack here. */ + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(entry_thread != NULL); + DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); + tv1 = thr->valstack_top - 1; + DUK_TVAL_CHKFAST_INPLACE(tv1); /* fastint downgrade check for return values */ + + /* + * Four possible outcomes: + * + * 1. A 'finally' in the same function catches the 'return'. + * It may continue to propagate when 'finally' is finished, + * or it may be neutralized by 'finally' (both handled by + * ENDFIN). + * + * 2. The return happens at the entry level of the bytecode + * executor, so return from the executor (in C stack). + * + * 3. There is a calling (Ecmascript) activation in the call + * stack => return to it, in the same executor instance. + * + * 4. There is no calling activation, and the thread is + * terminated. There is always a resumer in this case, + * which gets the return value similarly to a 'yield' + * (except that the current thread can no longer be + * resumed). + */ + + DUK_ASSERT(thr != NULL); + DUK_ASSERT(thr->callstack_top >= 1); + DUK_ASSERT(thr->catchstack != NULL); + + /* XXX: does not work if thr->catchstack is NULL */ + /* XXX: does not work if thr->catchstack is allocated but lowest pointer */ + + cat = thr->catchstack + thr->catchstack_top - 1; /* may be < thr->catchstack initially */ + DUK_ASSERT(thr->callstack_top > 0); /* ensures callstack_top - 1 >= 0 */ + orig_callstack_index = thr->callstack_top - 1; + + while (cat >= thr->catchstack) { + if (cat->callstack_index != orig_callstack_index) { + break; + } + if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF && + DUK_CAT_HAS_FINALLY_ENABLED(cat)) { + duk_size_t cat_idx; + + cat_idx = (duk_size_t) (cat - thr->catchstack); /* get before side effects */ + + DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); + duk__handle_finally(thr, cat_idx, thr->valstack_top - 1, DUK_LJ_TYPE_RETURN); + + DUK_DD(DUK_DDPRINT("-> return caught by 'finally', restart execution")); + return DUK__RETHAND_RESTART; + } + cat--; + } + /* If out of catchstack, cat = thr->catchstack - 1; + * new_cat_top will be 0 in that case. + */ + new_cat_top = (duk_size_t) ((cat + 1) - thr->catchstack); + cat = NULL; /* avoid referencing, invalidated */ + + DUK_DDD(DUK_DDDPRINT("no catcher in catch stack, return to calling activation / yield")); + + if (thr == entry_thread && + thr->callstack_top == entry_callstack_top) { + /* Return to the bytecode executor caller which will unwind stacks. + * Return value is already on the stack top: [ ... retval ]. + */ + + DUK_DDD(DUK_DDDPRINT("-> return propagated up to entry level, exit bytecode executor")); + return DUK__RETHAND_FINISHED; + } + + if (thr->callstack_top >= 2) { + /* There is a caller; it MUST be an Ecmascript caller (otherwise it would + * match entry level check) + */ + + DUK_DDD(DUK_DDDPRINT("return to Ecmascript caller, idx_retval=%ld, lj_value1=%!T", + (long) (thr->callstack + thr->callstack_top - 2)->idx_retval, + (duk_tval *) &thr->heap->lj.value1)); + + DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */ + + tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval; + DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); + tv2 = thr->valstack_top - 1; + DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ + + DUK_DDD(DUK_DDDPRINT("return value at idx_retval=%ld is %!T", + (long) (thr->callstack + thr->callstack_top - 2)->idx_retval, + (duk_tval *) (thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval))); + + duk_hthread_catchstack_unwind(thr, new_cat_top); /* leave 'cat' as top catcher (also works if catchstack exhausted) */ + duk_hthread_callstack_unwind(thr, thr->callstack_top - 1); + duk__reconfig_valstack_ecma_return(thr, thr->callstack_top - 1); + + DUK_DD(DUK_DDPRINT("-> return not intercepted, restart execution in caller")); + return DUK__RETHAND_RESTART; + } + + DUK_DD(DUK_DDPRINT("no calling activation, thread finishes (similar to yield)")); + + DUK_ASSERT(thr->resumer != NULL); + DUK_ASSERT(thr->resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */ + DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1) != NULL && + DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1)) && + ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1))->func == duk_bi_thread_resume); /* Duktape.Thread.resume() */ + DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2) != NULL && + DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2))); /* an Ecmascript function */ + DUK_ASSERT_DISABLE((thr->resumer->callstack + thr->resumer->callstack_top - 2)->idx_retval >= 0); /* unsigned */ + DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); + DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED); + + resumer = thr->resumer; + + /* Share yield longjmp handler. */ + DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); + duk__handle_yield(thr, resumer, resumer->callstack_top - 2, thr->valstack_top - 1); + + duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */ + DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED); + + thr->resumer = NULL; + resumer->state = DUK_HTHREAD_STATE_RUNNING; + DUK_HEAP_SWITCH_THREAD(thr->heap, resumer); +#if 0 + thr = resumer; /* not needed */ #endif + DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer")); + return DUK__RETHAND_RESTART; +} + /* * Executor interrupt handling * @@ -65544,9 +67185,6 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_ line = duk_debug_curr_line(thr); if (act->prev_line != line) { - DUK_DDD(DUK_DDDPRINT("PC=%ld line=%ld; line transition: %ld -> %ld", - (long) act->pc, (long) line, (long) act->prev_line, (long) line)); - /* Stepped? Step out is handled by callstack unwind. */ if ((thr->heap->dbg_step_type == DUK_STEP_TYPE_INTO || thr->heap->dbg_step_type == DUK_STEP_TYPE_OVER) && @@ -65560,9 +67198,16 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_ } /* Check for breakpoints only on line transition. - * Breakpoint is triggered when we enter or cross - * the target line, and the previous line was within - * the same function. + * Breakpoint is triggered when we enter the target + * line from a different line, and the previous line + * was within the same function. + * + * This condition is tricky: the condition used to be + * that transition to -or across- the breakpoint line + * triggered the breakpoint. This seems intuitively + * better because it handles breakpoints on lines with + * no emitted opcodes; but this leads to the issue + * described in: https://github.com/svaarala/duktape/issues/263. */ bp_active = thr->heap->dbg_breakpoints_active; for (;;) { @@ -65570,8 +67215,9 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_ if (bp == NULL) { break; } + DUK_ASSERT(bp->filename != NULL); - if (act->prev_line < bp->line && line >= bp->line) { + if (act->prev_line != bp->line && line == bp->line) { DUK_D(DUK_DPRINT("BREAKPOINT TRIGGERED at %!O:%ld", (duk_heaphdr *) bp->filename, (long) bp->line)); @@ -65579,7 +67225,7 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_ } } } else { - DUK_DDD(DUK_DDDPRINT("PC=%ld line=%ld", (long) act->pc, (long) line)); + ; } act->prev_line = line; @@ -65716,9 +67362,19 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) { /* * Avoid nested calls. Concretely this happens during debugging, e.g. * when we eval() an expression. + * + * Also don't interrupt if we're currently doing debug processing + * (which can be initiated outside the bytecode executor) as this + * may cause the debugger to be called recursively. Check required + * for correct operation of throw intercept and other "exotic" halting + * scenarios. */ +#if defined(DUK_USE_DEBUGGER_SUPPORT) + if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap) || thr->heap->dbg_processing) { +#else if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap)) { +#endif DUK_DD(DUK_DDPRINT("nested executor interrupt, ignoring")); /* Set a high interrupt counter; the original executor @@ -65731,8 +67387,10 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) { DUK_HEAP_SET_INTERRUPT_RUNNING(thr->heap); act = thr->callstack + thr->callstack_top - 1; + fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION((duk_hobject *) fun)); + DUK_UNREF(fun); #if defined(DUK_USE_EXEC_TIMEOUT_CHECK) @@ -65773,14 +67431,12 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) { ctr = 1; } - DUK_DDD(DUK_DDDPRINT("executor interrupt finished, cstop=%ld, pc=%ld, nextctr=%ld", - (long) thr->callstack_top, (long) act->pc, (long) ctr)); - /* The counter value is one less than the init value: init value should * indicate how many instructions are executed before interrupt. To * execute 1 instruction (after interrupt handler return), counter must * be 0. */ + DUK_ASSERT(ctr >= 1); thr->interrupt_init = ctr; thr->interrupt_counter = ctr - 1; DUK_HEAP_CLEAR_INTERRUPT_RUNNING(thr->heap); @@ -65799,7 +67455,7 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) { */ #if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *act, duk_hcompiledfunction *fun) { +DUK_LOCAL void duk__executor_recheck_debugger(duk_hthread *thr, duk_activation *act, duk_hcompiledfunction *fun) { duk_heap *heap; duk_tval *tv_tmp; duk_hstring *filename; @@ -65935,15 +67591,15 @@ DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *a * setjmp() jmpbuf. * * Ecmascript function calls and coroutine resumptions are handled - * internally without recursive C calls. Other function calls are - * handled using duk_handle_call(), increasing C recursion depth. + * internally (by the outer executor function) without recursive C calls. + * Other function calls are handled using duk_handle_call(), increasing + * C recursion depth. * - * There are many other tricky control flow situations, such as: - * - * - Break and continue (fast and slow) - * - Return (fast and slow) - * - Error throwing - * - Thread resume and yield + * Abrupt completions (= long control tranfers) are handled either + * directly by reconfiguring relevant stacks and restarting execution, + * or via a longjmp. Longjmp-free handling is preferable for performance + * (especially Emscripten performance), and is used for: break, continue, + * and return. * * For more detailed notes, see doc/execution.rst. * @@ -65951,11 +67607,19 @@ DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *a * and volatile. */ -#define DUK__STRICT() (DUK_HOBJECT_HAS_STRICT(&(fun)->obj)) -#define DUK__REG(x) (thr->valstack_bottom[(x)]) -#define DUK__REGP(x) (&thr->valstack_bottom[(x)]) -#define DUK__CONST(x) (DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun)[(x)]) -#define DUK__CONSTP(x) (&DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun)[(x)]) +/* Presence of 'fun' is config based, there's a marginal performance + * difference and the best option is architecture dependent. + */ +#if defined(DUK_USE_EXEC_FUN_LOCAL) +#define DUK__FUN() fun +#else +#define DUK__FUN() ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC((thr)->callstack + (thr)->callstack_top - 1)) +#endif +#define DUK__STRICT() (DUK_HOBJECT_HAS_STRICT((duk_hobject *) DUK__FUN())) +#define DUK__REG(x) (*(thr->valstack_bottom + (x))) +#define DUK__REGP(x) (thr->valstack_bottom + (x)) +#define DUK__CONST(x) (*(consts + (x))) +#define DUK__CONSTP(x) (consts + (x)) #define DUK__REGCONST(x) ((x) < DUK_BC_REGLIMIT ? DUK__REG((x)) : DUK__CONST((x) - DUK_BC_REGLIMIT)) #define DUK__REGCONSTP(x) ((x) < DUK_BC_REGLIMIT ? DUK__REGP((x)) : DUK__CONSTP((x) - DUK_BC_REGLIMIT)) @@ -65969,46 +67633,29 @@ DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *a } while (0) #endif +#define DUK__SYNC_CURR_PC() do { \ + duk_activation *act; \ + act = thr->callstack + thr->callstack_top - 1; \ + act->curr_pc = curr_pc; \ + } while (0) +#define DUK__SYNC_AND_NULL_CURR_PC() do { \ + duk_activation *act; \ + act = thr->callstack + thr->callstack_top - 1; \ + act->curr_pc = curr_pc; \ + thr->ptr_curr_pc = NULL; \ + } while (0) + +/* Outer executor with setjmp/longjmp handling. */ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { - /* Entry level info. Although these are assigned to before setjmp() - * a 'volatile' seems to be needed. Note placement of "volatile" for - * pointers. See doc/code-issues.rst for more discussion. - */ - duk_hthread * volatile entry_thread; /* volatile copy of exec_thr */ - volatile duk_size_t entry_callstack_top; - volatile duk_int_t entry_call_recursion_depth; - duk_jmpbuf * volatile entry_jmpbuf_ptr; + /* Entry level info. */ + duk_hthread *entry_thread; + duk_size_t entry_callstack_top; + duk_int_t entry_call_recursion_depth; + duk_jmpbuf *entry_jmpbuf_ptr; - /* "hot" variables for interpretation -- not volatile, value not guaranteed in setjmp error handling */ - duk_hthread *thr; /* stable */ - duk_activation *act; /* semi-stable (ok as long as callstack not resized) */ - duk_hcompiledfunction *fun; /* stable */ - duk_instr_t *bcode; /* stable */ - /* 'consts' is computed on-the-fly */ - /* 'funcs' is quite rarely used, so no local for it */ - - /* "hot" temps for interpretation -- not volatile, value not guaranteed in setjmp error handling */ - duk_uint_fast32_t ins; /* XXX: check performance impact on x64 between fast/non-fast variant */ - - /* jmpbuf */ + duk_heap *heap; duk_jmpbuf jmpbuf; -#ifdef DUK_USE_INTERRUPT_COUNTER - duk_int_t int_ctr; -#endif - -#ifdef DUK_USE_ASSERTIONS - duk_size_t valstack_top_base; /* valstack top, should match before interpreting each op (no leftovers) */ -#endif - - /* XXX: document assumptions on setjmp and volatile variables - * (see duk_handle_call()). - */ - - /* - * Preliminaries - */ - DUK_ASSERT(exec_thr != NULL); DUK_ASSERT(exec_thr->heap != NULL); DUK_ASSERT(exec_thr->heap->curr_thread != NULL); @@ -66017,143 +67664,119 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_ASSERT(DUK_ACT_GET_FUNC(exec_thr->callstack + exec_thr->callstack_top - 1) != NULL); DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(exec_thr->callstack + exec_thr->callstack_top - 1))); - entry_thread = exec_thr; /* volatile copy */ - thr = (duk_hthread *) entry_thread; - entry_callstack_top = thr->callstack_top; - entry_call_recursion_depth = thr->heap->call_recursion_depth; - entry_jmpbuf_ptr = thr->heap->lj.jmpbuf_ptr; + entry_thread = exec_thr; + heap = entry_thread->heap; + entry_callstack_top = entry_thread->callstack_top; + entry_call_recursion_depth = entry_thread->heap->call_recursion_depth; + entry_jmpbuf_ptr = entry_thread->heap->lj.jmpbuf_ptr; /* - * Setjmp catchpoint setup. - * * Note: we currently assume that the setjmp() catchpoint is * not re-entrant (longjmp() cannot be called more than once * for a single setjmp()). + * + * See doc/code-issues.rst for notes on variable assignment + * before and after setjmp(). */ - reset_setjmp_catchpoint: + for (;;) { + heap->lj.jmpbuf_ptr = &jmpbuf; + DUK_ASSERT(heap->lj.jmpbuf_ptr != NULL); - DUK_ASSERT(thr != NULL); - thr->heap->lj.jmpbuf_ptr = &jmpbuf; - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); + if (DUK_SETJMP(heap->lj.jmpbuf_ptr->jb) != 0) { + duk_small_uint_t lj_ret; - if (DUK_SETJMP(thr->heap->lj.jmpbuf_ptr->jb)) { - /* - * Note: any local variables accessed here must have their value - * assigned *before* the setjmp() call, OR they must be declared - * volatile. Otherwise their value is not guaranteed to be correct. - * - * 'thr' might seem to be a risky variable because it is changed - * for yield and resume. However, yield and resume are handled - * using longjmp()s. - */ + DUK_DDD(DUK_DDDPRINT("longjmp caught by bytecode executor")); - duk_small_uint_t lj_ret; - - DUK_DDD(DUK_DDDPRINT("longjmp caught by bytecode executor")); - - /* Relookup 'thr': it's not volatile so its value is not - * guaranteed. The heap->curr_thread value should always be - * valid here because longjmp callers don't switch threads, - * only the longjmp handler does that (even for RESUME and - * YIELD). - */ - DUK_ASSERT(entry_thread != NULL); - thr = entry_thread->heap->curr_thread; - - /* XXX: signalling the need to shrink check (only if unwound) */ - - /* Must be restored here to handle e.g. yields properly. */ - thr->heap->call_recursion_depth = entry_call_recursion_depth; - - /* Switch to caller's setjmp() catcher so that if an error occurs - * during error handling, it is always propagated outwards instead - * of causing an infinite loop in our own handler. - */ - - DUK_DDD(DUK_DDDPRINT("restore jmpbuf_ptr: %p -> %p", - (void *) ((thr && thr->heap) ? thr->heap->lj.jmpbuf_ptr : NULL), - (void *) entry_jmpbuf_ptr)); - thr->heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr; - - lj_ret = duk__handle_longjmp(thr, (duk_hthread *) entry_thread, (duk_size_t) entry_callstack_top); - - if (lj_ret == DUK__LONGJMP_RESTART) { - /* - * Restart bytecode execution, possibly with a changed thread. + /* Longjmp callers are required to sync-and-null thr->ptr_curr_pc + * before longjmp. */ - thr = thr->heap->curr_thread; - goto reset_setjmp_catchpoint; - } else if (lj_ret == DUK__LONGJMP_RETHROW) { - /* - * Rethrow error to calling state. + DUK_ASSERT(heap->curr_thread != NULL); + DUK_ASSERT(heap->curr_thread->ptr_curr_pc == NULL); + + /* XXX: signalling the need to shrink check (only if unwound) */ + + /* Must be restored here to handle e.g. yields properly. */ + heap->call_recursion_depth = entry_call_recursion_depth; + + /* Switch to caller's setjmp() catcher so that if an error occurs + * during error handling, it is always propagated outwards instead + * of causing an infinite loop in our own handler. */ + heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr; - /* thread may have changed (e.g. YIELD converted to THROW) */ - thr = thr->heap->curr_thread; + lj_ret = duk__handle_longjmp(heap->curr_thread, entry_thread, entry_callstack_top); - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr); + if (lj_ret == DUK__LONGJMP_RESTART) { + /* Restart bytecode execution, possibly with a changed thread. */ + ; + } else { + /* Rethrow error to calling state. */ + DUK_ASSERT(lj_ret == DUK__LONGJMP_RETHROW); - duk_err_longjmp(thr); - DUK_UNREACHABLE(); + /* Longjmp handling has restored jmpbuf_ptr. */ + DUK_ASSERT(heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr); + + /* Thread may have changed, e.g. YIELD converted to THROW. */ + duk_err_longjmp(heap->curr_thread); + DUK_UNREACHABLE(); + } } else { - /* - * Return from bytecode executor with a return value. - */ - DUK_ASSERT(lj_ret == DUK__LONGJMP_FINISHED); + /* Execute bytecode until returned or longjmp(). */ + duk__js_execute_bytecode_inner(entry_thread, entry_callstack_top); - /* XXX: return assertions for valstack, callstack, catchstack */ - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr); + /* Successful return: restore jmpbuf and return to caller. */ + heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr; return; } - DUK_UNREACHABLE(); } + DUK_UNREACHABLE(); +} + +/* Inner executor, performance critical. */ +DUK_LOCAL DUK_NOINLINE void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_size_t entry_callstack_top) { + /* Current PC, accessed by other functions through thr->ptr_to_curr_pc. + * Critical for performance. It would be safest to make this volatile, + * but that eliminates performance benefits; aliasing guarantees + * should be enough though. + */ + duk_instr_t *curr_pc; /* bytecode has a stable pointer */ + + /* Hot variables for interpretation. Critical for performance, + * but must add sparingly to minimize register shuffling. + */ + duk_hthread *thr; /* stable */ + duk_tval *consts; /* stable */ + duk_uint_fast32_t ins; + /* 'funcs' is quite rarely used, so no local for it */ +#if defined(DUK_USE_EXEC_FUN_LOCAL) + duk_hcompiledfunction *fun; +#else + /* 'fun' is quite rarely used, so no local for it */ +#endif + +#ifdef DUK_USE_INTERRUPT_COUNTER + duk_int_t int_ctr; +#endif + +#ifdef DUK_USE_ASSERTIONS + duk_size_t valstack_top_base; /* valstack top, should match before interpreting each op (no leftovers) */ +#endif + /* * Restart execution by reloading thread state. * * Note that 'thr' and any thread configuration may have changed, - * so all local variables are suspect. + * so all local variables are suspect and we need to reinitialize. * * The number of local variables should be kept to a minimum: if * the variables are spilled, they will need to be loaded from * memory anyway. - */ - - restart_execution: - - /* Lookup current thread; use the volatile 'entry_thread' for this to - * avoid clobber warnings. (Any valid, reachable 'thr' value would be - * fine for this, so using 'entry_thread' is just to silence warnings.) - */ - thr = entry_thread->heap->curr_thread; - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))); - - /* Assume interrupt init/counter are properly initialized here. */ - - /* assume that thr->valstack_bottom has been set-up before getting here */ - act = thr->callstack + thr->callstack_top - 1; - fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); - DUK_ASSERT(fun != NULL); - DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs); - bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun); - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) && !thr->heap->dbg_processing) { - thr->heap->dbg_processing = 1; - duk__executor_handle_debugger(thr, act, fun); - thr->heap->dbg_processing = 0; - } -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - - /* XXX: shrink check flag? */ - - /* - * Bytecode interpreter. + * + * Any 'goto restart_execution;' code path in opcode dispatch must + * ensure 'curr_pc' is synced back to act->curr_pc before the goto + * takes place. * * The interpreter must be very careful with memory pointers, as * many pointers are not guaranteed to be 'stable' and may be @@ -66171,43 +67794,83 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { * is not changed (reallocated by growing or shrinking), or * by any garbage collection invocation (through finalizers) * - Note in particular that ANY DECREF can invalidate the - * activation pointer + * activation pointer, so for the most part a fresh lookup + * is required * * The following are not assumed to have stable pointers at all: * - the value stack (registers) of the current thread * - the catch stack of the current thread * - * See execution.txt for discussion. + * See execution.rst for discussion. */ - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(fun != NULL); - DUK_ASSERT(bcode != NULL); + restart_execution: - DUK_DD(DUK_DDPRINT("restarting execution, thr %p, act %p (idx %ld), fun %p, bcode %p, " + /* Lookup current thread; use the stable 'entry_thread' for this to + * avoid clobber warnings. Any valid, reachable 'thr' value would be + * fine for this, so using 'entry_thread' is just to silence warnings. + */ + thr = entry_thread->heap->curr_thread; + DUK_ASSERT(thr != NULL); + DUK_ASSERT(thr->callstack_top >= 1); + DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL); + DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))); + + thr->ptr_curr_pc = &curr_pc; + + /* Relookup and initialize dispatch loop variables. Debugger check. */ + { + duk_activation *act; +#if !defined(DUK_USE_EXEC_FUN_LOCAL) + duk_hcompiledfunction *fun; +#endif + + /* Assume interrupt init/counter are properly initialized here. */ + /* Assume that thr->valstack_bottom has been set-up before getting here. */ + + act = thr->callstack + thr->callstack_top - 1; + fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); + DUK_ASSERT(fun != NULL); + DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs); + consts = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun); + DUK_ASSERT(consts != NULL); + +#if defined(DUK_USE_DEBUGGER_SUPPORT) + if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) && !thr->heap->dbg_processing) { + thr->heap->dbg_processing = 1; + duk__executor_recheck_debugger(thr, act, fun); + act = thr->callstack + thr->callstack_top - 1; /* relookup after side effects */ + thr->heap->dbg_processing = 0; + } +#endif /* DUK_USE_DEBUGGER_SUPPORT */ + +#ifdef DUK_USE_ASSERTIONS + valstack_top_base = (duk_size_t) (thr->valstack_top - thr->valstack); +#endif + + /* Set up curr_pc for opcode dispatch. */ + curr_pc = act->curr_pc; + } + + DUK_DD(DUK_DDPRINT("restarting execution, thr %p, act idx %ld, fun %p," "consts %p, funcs %p, lev %ld, regbot %ld, regtop %ld, catchstack_top=%ld, " "preventcount=%ld", (void *) thr, - (void *) act, (long) (thr->callstack_top - 1), - (void *) fun, - (void *) bcode, - (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun), - (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, fun), + (void *) DUK__FUN(), + (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, DUK__FUN()), + (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, DUK__FUN()), (long) (thr->callstack_top - 1), (long) (thr->valstack_bottom - thr->valstack), (long) (thr->valstack_top - thr->valstack), (long) thr->catchstack_top, (long) thr->callstack_preventcount)); -#ifdef DUK_USE_ASSERTIONS - valstack_top_base = (duk_size_t) (thr->valstack_top - thr->valstack); -#endif + /* Dispatch loop. */ for (;;) { DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs); + DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == DUK__FUN()->nregs); DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack) == valstack_top_base); /* Executor interrupt counter check, used to implement breakpoints, @@ -66216,7 +67879,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { * as fast as possible. The counter is copied back to the heap struct * whenever a thread switch occurs by the DUK_HEAP_SWITCH_THREAD() macro. */ -#ifdef DUK_USE_INTERRUPT_COUNTER +#if defined(DUK_USE_INTERRUPT_COUNTER) int_ctr = thr->interrupt_counter; if (DUK_LIKELY(int_ctr > 0)) { thr->interrupt_counter = int_ctr - 1; @@ -66224,59 +67887,76 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* Trigger at zero or below */ duk_small_uint_t exec_int_ret; + /* Write curr_pc back for the debugger. */ + DUK_ASSERT(thr->callstack_top > 0); + { + duk_activation *act; + act = thr->callstack + thr->callstack_top - 1; + act->curr_pc = (duk_instr_t *) curr_pc; + } + + /* Force restart caused by a function return; must recheck + * debugger breakpoints before checking line transitions, + * see GH-303. Restart and then handle interrupt_counter + * zero again. + */ +#if defined(DUK_USE_DEBUGGER_SUPPORT) + if (thr->heap->dbg_force_restart) { + DUK_DD(DUK_DDPRINT("dbg_force_restart flag forced restart execution")); /* GH-303 */ + thr->heap->dbg_force_restart = 0; + goto restart_execution; + } +#endif + exec_int_ret = duk__executor_interrupt(thr); if (exec_int_ret == DUK__INT_RESTART) { + /* curr_pc synced back above */ goto restart_execution; } } -#endif +#endif /* DUK_USE_INTERRUPT_COUNTER */ #if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) + /* For cross-checking during development: ensure dispatch count + * matches cumulative interrupt counter init value sums. + */ thr->heap->inst_count_exec++; #endif - /* Because ANY DECREF potentially invalidates 'act' now (through - * finalization), we need to re-lookup 'act' in almost every case. - * - * XXX: future work for performance optimization: - * This is not nice; it would be nice if the program counter was a - * behind a stable pointer. For instance, put a raw bytecode pointer - * into duk_hthread struct (not into the callstack); since bytecode - * has a stable pointer this would work nicely. Whenever a call is - * made, the bytecode pointer could be backed up as an integer index - * to the calling activation. Perhaps add a macro for setting up a - * new activation (same as for setting up / switching threads)? - */ +#if defined(DUK_USE_ASSERTIONS) || defined(DUK_USE_DEBUG) + { + duk_activation *act; + act = thr->callstack + thr->callstack_top - 1; + DUK_ASSERT(curr_pc >= DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, DUK__FUN())); + DUK_ASSERT(curr_pc < DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, DUK__FUN())); + DUK_UNREF(act); /* if debugging disabled */ - act = thr->callstack + thr->callstack_top - 1; - DUK_ASSERT(bcode + act->pc >= DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun)); - DUK_ASSERT(bcode + act->pc < DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, fun)); - - DUK_DDD(DUK_DDDPRINT("executing bytecode: pc=%ld ins=0x%08lx, op=%ld, valstack_top=%ld/%ld, nregs=%ld --> %!I", - (long) act->pc, - (unsigned long) bcode[act->pc], - (long) DUK_DEC_OP(bcode[act->pc]), - (long) (thr->valstack_top - thr->valstack), - (long) (thr->valstack_end - thr->valstack), - (long) (fun ? fun->nregs : -1), - (duk_instr_t) bcode[act->pc])); + DUK_DDD(DUK_DDDPRINT("executing bytecode: pc=%ld, ins=0x%08lx, op=%ld, valstack_top=%ld/%ld, nregs=%ld --> %!I", + (long) (curr_pc - DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, DUK__FUN())), + (unsigned long) *curr_pc, + (long) DUK_DEC_OP(*curr_pc), + (long) (thr->valstack_top - thr->valstack), + (long) (thr->valstack_end - thr->valstack), + (long) (DUK__FUN() ? DUK__FUN()->nregs : -1), + (duk_instr_t) *curr_pc)); + } +#endif #if defined(DUK_USE_ASSERTIONS) - /* Quite heavy assert: check that valstack is in correctly - * initialized state. Improper shuffle instructions can - * write beyond valstack_end so this check catches them in - * the act. + /* Quite heavy assert: check valstack policy. Improper + * shuffle instructions can write beyond valstack_top/end + * so this check catches them in the act. */ { duk_tval *tv; tv = thr->valstack_top; while (tv != thr->valstack_end) { - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv)); + DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); tv++; } } #endif - ins = bcode[act->pc++]; + ins = *curr_pc++; /* Typing: use duk_small_(u)int_fast_t when decoding small * opcode fields (op, A, B, C) and duk_(u)int_fast_t when @@ -66300,52 +67980,39 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_OP_LDREG: { duk_small_uint_fast_t a; duk_uint_fast_t bc; - duk_tval tv_tmp; duk_tval *tv1, *tv2; a = DUK_DEC_A(ins); tv1 = DUK__REGP(a); bc = DUK_DEC_BC(ins); tv2 = DUK__REGP(bc); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */ break; } case DUK_OP_STREG: { duk_small_uint_fast_t a; duk_uint_fast_t bc; - duk_tval tv_tmp; duk_tval *tv1, *tv2; a = DUK_DEC_A(ins); tv1 = DUK__REGP(a); bc = DUK_DEC_BC(ins); tv2 = DUK__REGP(bc); - DUK_TVAL_SET_TVAL(&tv_tmp, tv2); - DUK_TVAL_SET_TVAL(tv2, tv1); - DUK_TVAL_INCREF(thr, tv2); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv2, tv1); /* side effects */ break; } case DUK_OP_LDCONST: { duk_small_uint_fast_t a; duk_uint_fast_t bc; - duk_tval tv_tmp; duk_tval *tv1, *tv2; a = DUK_DEC_A(ins); tv1 = DUK__REGP(a); bc = DUK_DEC_BC(ins); tv2 = DUK__CONSTP(bc); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv2); /* may be e.g. string */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */ break; } case DUK_OP_LDINT: { duk_small_uint_fast_t a; duk_int_fast_t bc; - duk_tval tv_tmp; duk_tval *tv1; #if defined(DUK_USE_FASTINT) duk_int32_t val; @@ -66356,15 +68023,11 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { #if defined(DUK_USE_FASTINT) a = DUK_DEC_A(ins); tv1 = DUK__REGP(a); bc = DUK_DEC_BC(ins); val = (duk_int32_t) (bc - DUK_BC_LDINT_BIAS); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_FASTINT_I32(tv1, val); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv1, val); /* side effects */ #else a = DUK_DEC_A(ins); tv1 = DUK__REGP(a); bc = DUK_DEC_BC(ins); val = (duk_double_t) (bc - DUK_BC_LDINT_BIAS); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_NUMBER(tv1, val); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, val); /* side effects */ #endif break; } @@ -66535,11 +68198,15 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { * C -> num args (N) */ - /* Note: duk_new() will call the constuctor using duk_handle_call(). + /* duk_new() will call the constuctor using duk_handle_call(). * A constructor call prevents a yield from inside the constructor, * even if the constructor is an Ecmascript function. */ + /* Don't need to sync curr_pc here; duk_new() will do that + * when it augments the created error. + */ + /* XXX: unnecessary copying of values? Just set 'top' to * b + c, and let the return handling fix up the stack frame? */ @@ -66567,6 +68234,11 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { duk_new(ctx, (duk_idx_t) c); /* [... constructor arg1 ... argN] -> [retval] */ DUK_DDD(DUK_DDDPRINT("NEW -> %!iT", (duk_tval *) duk_get_tval(ctx, -1))); duk_replace(ctx, (duk_idx_t) idx); + + /* When debugger is enabled, we need to recheck the activation + * status after returning. This is now handled by call handling + * and heap->dbg_force_restart. + */ break; } @@ -66644,6 +68316,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_OP_GETVAR: { duk_context *ctx = (duk_context *) thr; + duk_activation *act; duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_uint_fast_t bc = DUK_DEC_BC(ins); duk_tval *tv1; @@ -66654,6 +68327,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { name = DUK_TVAL_GET_STRING(tv1); DUK_ASSERT(name != NULL); DUK_DDD(DUK_DDDPRINT("GETVAR: '%!O'", (duk_heaphdr *) name)); + act = thr->callstack + thr->callstack_top - 1; (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */ duk_pop(ctx); /* 'this' binding is not needed here */ @@ -66662,6 +68336,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { } case DUK_OP_PUTVAR: { + duk_activation *act; duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_uint_fast_t bc = DUK_DEC_BC(ins); duk_tval *tv1; @@ -66677,11 +68352,13 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { */ tv1 = DUK__REGP(a); /* val */ + act = thr->callstack + thr->callstack_top - 1; duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT()); break; } case DUK_OP_DECLVAR: { + duk_activation *act; duk_context *ctx = (duk_context *) thr; duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_small_uint_fast_t b = DUK_DEC_B(ins); @@ -66716,6 +68393,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { } tv1 = duk_get_tval(ctx, -1); + act = thr->callstack + thr->callstack_top - 1; if (duk_js_declvar_activation(thr, act, name, tv1, prop_flags, is_func_decl)) { /* already declared, must update binding value */ tv1 = duk_get_tval(ctx, -1); @@ -66727,6 +68405,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { } case DUK_OP_DELVAR: { + duk_activation *act; duk_context *ctx = (duk_context *) thr; duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_small_uint_fast_t b = DUK_DEC_B(ins); @@ -66739,6 +68418,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { name = DUK_TVAL_GET_STRING(tv1); DUK_ASSERT(name != NULL); DUK_DDD(DUK_DDDPRINT("DELVAR '%!O'", (duk_heaphdr *) name)); + act = thr->callstack + thr->callstack_top - 1; rc = duk_js_delvar_activation(thr, act, name); duk_push_boolean(ctx, rc); @@ -66758,6 +68438,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { */ duk_context *ctx = (duk_context *) thr; + duk_activation *act; duk_small_uint_fast_t b = DUK_DEC_B(ins); duk_uint_fast_t idx; duk_tval *tv1; @@ -66767,6 +68448,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); name = DUK_TVAL_GET_STRING(tv1); DUK_ASSERT(name != NULL); + act = thr->callstack + thr->callstack_top - 1; (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */ /* Note: target registers a and a+1 may overlap with DUK__REGCONSTP(b) @@ -66795,6 +68477,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_OP_CLOSURE: { duk_context *ctx = (duk_context *) thr; + duk_activation *act; + duk_hcompiledfunction *fun; duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_uint_fast_t bc = DUK_DEC_BC(ins); duk_hobject *fun_temp; @@ -66804,10 +68488,13 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { */ DUK_DDD(DUK_DDDPRINT("CLOSURE to target register %ld, fnum %ld (count %ld)", - (long) a, (long) bc, (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, fun))); + (long) a, (long) bc, (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, DUK__FUN()))); DUK_ASSERT_DISABLE(bc >= 0); /* unsigned */ - DUK_ASSERT((duk_uint_t) bc < (duk_uint_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, fun)); + DUK_ASSERT((duk_uint_t) bc < (duk_uint_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, DUK__FUN())); + + act = thr->callstack + thr->callstack_top - 1; + fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act); fun_temp = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, fun)[bc]; DUK_ASSERT(fun_temp != NULL); DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(fun_temp)); @@ -67142,7 +68829,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { tmp = duk_js_toboolean(DUK__REGCONSTP(b)); if (tmp == (duk_bool_t) a) { /* if boolean matches A, skip next inst */ - act->pc++; + curr_pc++; } else { ; } @@ -67152,7 +68839,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_OP_JUMP: { duk_int_fast_t abc = DUK_DEC_ABC(ins); - act->pc += abc - DUK_BC_JUMP_BIAS; + curr_pc += abc - DUK_BC_JUMP_BIAS; break; } @@ -67161,60 +68848,35 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_small_uint_fast_t b = DUK_DEC_B(ins); /* duk_small_uint_fast_t c = DUK_DEC_C(ins); */ - duk_tval *tv_val; + duk_small_uint_t ret_result; /* A -> flags * B -> return value reg/const * C -> currently unused */ - /* A fast return avoids full longjmp handling for a set of - * scenarios which hopefully represents the common cases. - * The compiler is responsible for emitting fast returns - * only when they are safe. Currently this means that there - * is nothing on the catch stack (not even label catchers). - * The speed advantage of fast returns (avoiding longjmp) is - * not very high, around 10-15%. + DUK__SYNC_AND_NULL_CURR_PC(); + + /* duk__handle_return() is guaranteed never to throw, except + * for potential out-of-memory situations which will then + * propagate out of the executor longjmp handler. */ -#if 0 /* XXX: Disabled for 1.0 release */ - if (a & DUK_BC_RETURN_FLAG_FAST) { - DUK_DDD(DUK_DDDPRINT("FASTRETURN attempt a=%ld b=%ld", (long) a, (long) b)); - - if (duk__handle_fast_return(thr, - (a & DUK_BC_RETURN_FLAG_HAVE_RETVAL) ? DUK__REGCONSTP(b) : NULL, - entry_thread, - entry_callstack_top)) { - DUK_DDD(DUK_DDDPRINT("FASTRETURN success a=%ld b=%ld", (long) a, (long) b)); - goto restart_execution; - } - } -#endif - - /* No fast return, slow path. */ - DUK_DDD(DUK_DDDPRINT("SLOWRETURN a=%ld b=%ld", (long) a, (long) b)); if (a & DUK_BC_RETURN_FLAG_HAVE_RETVAL) { - tv_val = DUK__REGCONSTP(b); -#if defined(DUK_USE_FASTINT) - /* Explicit check for fastint downgrade. Do - * it also for consts for now, which is odd - * but harmless. - */ - /* XXX: restrict to reg values only? */ - - DUK_TVAL_CHKFAST_INPLACE(tv_val); -#endif - duk_push_tval(ctx, tv_val); + duk_push_tval(ctx, DUK__REGCONSTP(b)); } else { duk_push_undefined(ctx); } + ret_result = duk__handle_return(thr, + entry_thread, + entry_callstack_top); + if (ret_result == DUK__RETHAND_RESTART) { + goto restart_execution; + } + DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED); - duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_RETURN); - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* in bytecode executor, should always be set */ - duk_err_longjmp(thr); - DUK_UNREACHABLE(); - break; + DUK_DDD(DUK_DDDPRINT("exiting executor after RETURN handling")); + return; } case DUK_OP_CALL: @@ -67230,6 +68892,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { duk_hobject *obj_func; duk_bool_t setup_rc; duk_idx_t num_stack_args; +#if !defined(DUK_USE_EXEC_FUN_LOCAL) + duk_hcompiledfunction *fun; +#endif /* A -> flags * B -> base register for call (base -> func, base+1 -> this, base+2 -> arg1 ... base+2+N-1 -> argN) @@ -67280,8 +68945,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { call_flags = 0; if (flag_tailcall) { - /* We request a tailcall, but in some corner cases - * call handling can decide that a tailcall is + /* We request a tail call, but in some corner cases + * call handling can decide that a tail call is * actually not possible. * See: test-bug-tailcall-preventyield-assert.c. */ @@ -67298,12 +68963,14 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { call_flags); if (setup_rc) { - /* Ecma-to-ecma call possible, may or may not be a tailcall. + /* Ecma-to-ecma call possible, may or may not be a tail call. * Avoid C recursion by being clever. */ DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call setup possible, restart execution")); + /* curr_pc synced by duk_handle_ecma_call_setup() */ goto restart_execution; } + DUK_ASSERT(thr->ptr_curr_pc != NULL); /* restored if ecma-to-ecma setup fails */ DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call not possible, target is native (may be lightfunc)")); @@ -67313,6 +68980,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { tv_func = DUK__REGP(idx); /* Relookup if relocated */ if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) { + call_flags = 0; /* not protected, respect reclimit, not constructor */ /* There is no eval() special handling here: eval() is never @@ -67327,6 +68995,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* duk_js_call.c is required to restore the stack reserve * so we only need to reset the top. */ +#if !defined(DUK_USE_EXEC_FUN_LOCAL) + fun = DUK__FUN(); +#endif duk_set_top(ctx, (duk_idx_t) fun->nregs); /* No need to reinit setjmp() catchpoint, as call handling @@ -67342,9 +69013,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* * Other cases, use C recursion. * - * If a tailcall was requested we ignore it and execute a normal call. + * If a tail call was requested we ignore it and execute a normal call. * Since Duktape 0.11.0 the compiler emits a RETURN opcode even after - * a tailcall to avoid test-bug-tailcall-thread-yield-resume.js. + * a tail call to avoid test-bug-tailcall-thread-yield-resume.js. * * Direct eval call: (1) call target (before following bound function * chain) is the built-in eval() function, and (2) call was made with @@ -67370,6 +69041,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* duk_js_call.c is required to restore the stack reserve * so we only need to reset the top. */ +#if !defined(DUK_USE_EXEC_FUN_LOCAL) + fun = DUK__FUN(); +#endif duk_set_top(ctx, (duk_idx_t) fun->nregs); /* No need to reinit setjmp() catchpoint, as call handling @@ -67377,17 +69051,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { */ } -#if defined(DUK_USE_DEBUGGER_SUPPORT) /* When debugger is enabled, we need to recheck the activation - * status after returning. + * status after returning. This is now handled by call handling + * and heap->dbg_force_restart. */ - goto restart_execution; -#endif break; } case DUK_OP_TRYCATCH: { duk_context *ctx = (duk_context *) thr; + duk_activation *act; duk_catcher *cat; duk_tval *tv1; duk_small_uint_fast_t a; @@ -67434,6 +69107,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { a = DUK_DEC_A(ins); bc = DUK_DEC_BC(ins); + act = thr->callstack + thr->callstack_top - 1; DUK_ASSERT(thr->callstack_top >= 1); /* 'with' target must be created first, in case we run out of memory */ @@ -67515,7 +69189,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_ASSERT(new_env != NULL); act = thr->callstack + thr->callstack_top - 1; /* relookup (side effects) */ - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, new_env, act->lex_env); + DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, new_env, act->lex_env); /* side effects */ act = thr->callstack + thr->callstack_top - 1; /* relookup (side effects) */ act->lex_env = new_env; @@ -67525,9 +69199,24 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { ; } + /* Registers 'bc' and 'bc + 1' are written in longjmp handling + * and if their previous values (which are temporaries) become + * unreachable -and- have a finalizer, there'll be a function + * call during error handling which is not supported now (GH-287). + * Ensure that both 'bc' and 'bc + 1' have primitive values to + * guarantee no finalizer calls in error handling. Scrubbing also + * ensures finalizers for the previous values run here rather than + * later. Error handling related values are also written to 'bc' + * and 'bc + 1' but those values never become unreachable during + * error handling, so there's no side effect problem even if the + * error value has a finalizer. + */ + duk_to_undefined(ctx, bc); + duk_to_undefined(ctx, bc + 1); + cat = thr->catchstack + thr->catchstack_top - 1; /* relookup (side effects) */ cat->callstack_index = thr->callstack_top - 1; - cat->pc_base = act->pc; /* pre-incremented, points to first jump slot */ + cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */ cat->idx_base = (duk_size_t) (thr->valstack_bottom - thr->valstack) + bc; DUK_DDD(DUK_DDDPRINT("TRYCATCH catcher: flags=0x%08lx, callstack_index=%ld, pc_base=%ld, " @@ -67535,7 +69224,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { (unsigned long) cat->flags, (long) cat->callstack_index, (long) cat->pc_base, (long) cat->idx_base, (duk_heaphdr *) cat->h_varname)); - act->pc += 2; /* skip jump slots */ + curr_pc += 2; /* skip jump slots */ break; } @@ -67548,7 +69237,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_uint_fast_t bc = DUK_DEC_BC(ins); duk_tval *tv1, *tv2; - duk_tval tv_tmp; duk_double_t x, y, z; /* Two lowest bits of opcode are used to distinguish @@ -67579,10 +69267,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_TVAL_SET_FASTINT(tv1, y_fi); /* no need for refcount update */ tv2 = DUK__REGP(a); - DUK_TVAL_SET_TVAL(&tv_tmp, tv2); z_fi = (ins & DUK_ENC_OP(0x02)) ? x_fi : y_fi; - DUK_TVAL_SET_FASTINT(tv2, z_fi); /* no need for incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_FASTINT_UPDREF(thr, tv2, z_fi); /* side effects */ break; } skip_fastint: @@ -67614,10 +69300,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { } tv2 = DUK__REGP(a); - DUK_TVAL_SET_TVAL(&tv_tmp, tv2); z = (ins & DUK_ENC_OP(0x02)) ? x : y; - DUK_TVAL_SET_NUMBER(tv2, z); /* no need for incref */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv2, z); /* side effects */ break; } @@ -67627,6 +69311,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_OP_POSTINCV: case DUK_OP_POSTDECV: { duk_context *ctx = (duk_context *) thr; + duk_activation *act; duk_small_uint_fast_t a = DUK_DEC_A(ins); duk_uint_fast_t bc = DUK_DEC_BC(ins); duk_double_t x, y; @@ -67645,6 +69330,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); name = DUK_TVAL_GET_STRING(tv1); DUK_ASSERT(name != NULL); + act = thr->callstack + thr->callstack_top - 1; (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */ /* XXX: fastint fast path would be very useful here */ @@ -67747,7 +69433,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_EXTRAOP_LDTHIS: { /* Note: 'this' may be bound to any value, not just an object */ duk_uint_fast_t bc = DUK_DEC_BC(ins); - duk_tval tv_tmp; duk_tval *tv1, *tv2; tv1 = DUK__REGP(bc); @@ -67756,48 +69441,36 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_DDD(DUK_DDDPRINT("LDTHIS: %!T to r%ld", (duk_tval *) tv2, (long) bc)); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_INCREF(thr, tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */ break; } case DUK_EXTRAOP_LDUNDEF: { duk_uint_fast_t bc = DUK_DEC_BC(ins); - duk_tval tv_tmp; duk_tval *tv1; tv1 = DUK__REGP(bc); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ break; } case DUK_EXTRAOP_LDNULL: { duk_uint_fast_t bc = DUK_DEC_BC(ins); - duk_tval tv_tmp; duk_tval *tv1; tv1 = DUK__REGP(bc); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_NULL(tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_NULL_UPDREF(thr, tv1); /* side effects */ break; } case DUK_EXTRAOP_LDTRUE: case DUK_EXTRAOP_LDFALSE: { duk_uint_fast_t bc = DUK_DEC_BC(ins); - duk_tval tv_tmp; duk_tval *tv1; duk_small_uint_fast_t bval = (extraop == DUK_EXTRAOP_LDTRUE ? 1 : 0); tv1 = DUK__REGP(bc); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_BOOLEAN(tv1, bval); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv1, bval); /* side effects */ break; } @@ -67849,6 +69522,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_EXTRAOP_TYPEOFID: { duk_context *ctx = (duk_context *) thr; + duk_activation *act; duk_small_uint_fast_t b = DUK_DEC_B(ins); duk_small_uint_fast_t c = DUK_DEC_C(ins); duk_hstring *name; @@ -67861,6 +69535,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { tv = DUK__REGCONSTP(c); /* XXX: this could be a DUK__CONSTP instead */ DUK_ASSERT(DUK_TVAL_IS_STRING(tv)); name = DUK_TVAL_GET_STRING(tv); + act = thr->callstack + thr->callstack_top - 1; if (duk_js_getvar_activation(thr, act, name, 0 /*throw*/)) { /* -> [... val this] */ tv = duk_get_tval(ctx, -2); @@ -67931,7 +69606,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* [ ... enum ] -> [ ... next_key ] */ DUK_DDD(DUK_DDDPRINT("enum active, next key is %!T, skip jump slot ", (duk_tval *) duk_get_tval(ctx, -1))); - act->pc++;; + curr_pc++; } else { /* [ ... enum ] -> [ ... ] */ DUK_DDD(DUK_DDDPRINT("enum finished, execute jump slot")); @@ -68015,7 +69690,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { case DUK_EXTRAOP_ENDTRY: { duk_catcher *cat; - duk_tval tv_tmp; duk_tval *tv1; DUK_ASSERT(thr->catchstack_top >= 1); @@ -68032,16 +69706,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { tv1 = thr->valstack + cat->idx_base; DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ tv1 = NULL; tv1 = thr->valstack + cat->idx_base + 1; DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_NUMBER(tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* XXX: set int */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ +#if defined(DUK_USE_FASTINT) + DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */ +#else + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* side effects */ +#endif tv1 = NULL; DUK_CAT_CLEAR_FINALLY_ENABLED(cat); @@ -68051,13 +69725,13 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* no need to unwind callstack */ } - act->pc = cat->pc_base + 1; + curr_pc = cat->pc_base + 1; break; } case DUK_EXTRAOP_ENDCATCH: { + duk_activation *act; duk_catcher *cat; - duk_tval tv_tmp; duk_tval *tv1; DUK_ASSERT(thr->catchstack_top >= 1); @@ -68067,6 +69741,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { cat = thr->catchstack + thr->catchstack_top - 1; DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat)); /* cleared before entering catch part */ + act = thr->callstack + thr->callstack_top - 1; + if (DUK_CAT_HAS_LEXENV_ACTIVE(cat)) { duk_hobject *prev_env; @@ -68088,16 +69764,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { tv1 = thr->valstack + cat->idx_base; DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1); - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ tv1 = NULL; tv1 = thr->valstack + cat->idx_base + 1; DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_NUMBER(tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* XXX: set int */ - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ +#if defined(DUK_USE_FASTINT) + DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */ +#else + DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* side effects */ +#endif tv1 = NULL; DUK_CAT_CLEAR_FINALLY_ENABLED(cat); @@ -68107,7 +69783,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { /* no need to unwind callstack */ } - act->pc = cat->pc_base + 1; + curr_pc = cat->pc_base + 1; break; } @@ -68115,7 +69791,11 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { duk_context *ctx = (duk_context *) thr; duk_catcher *cat; duk_tval *tv1; - duk_small_uint_fast_t cont_type; + duk_small_uint_t cont_type; + duk_small_uint_t ret_result; + + /* Sync and NULL early. */ + DUK__SYNC_AND_NULL_CURR_PC(); DUK_ASSERT(thr->catchstack_top >= 1); DUK_ASSERT(thr->callstack_top >= 1); @@ -68136,29 +69816,84 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { tv1 = thr->valstack + cat->idx_base + 1; /* type */ DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); - cont_type = (duk_small_uint_fast_t) DUK_TVAL_GET_NUMBER(tv1); + cont_type = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1); - if (cont_type == DUK_LJ_TYPE_NORMAL) { + switch (cont_type) { + case DUK_LJ_TYPE_NORMAL: { DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'normal' (non-abrupt) completion -> " "dismantle catcher, resume execution after ENDFIN")); duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1); /* no need to unwind callstack */ - } else { + goto restart_execution; + } + case DUK_LJ_TYPE_RETURN: { + DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'return' complation -> dismantle " + "catcher, handle return, lj.value1=%!T", thr->valstack + cat->idx_base)); + + /* Not necessary to unwind catchstack: return handling will + * do it. The finally flag of 'cat' is no longer set. The + * catch flag may be set, but it's not checked by return handling. + */ + DUK_ASSERT(!DUK_CAT_HAS_FINALLY_ENABLED(cat)); /* cleared before entering finally */ +#if 0 + duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1); +#endif + + duk_push_tval(ctx, thr->valstack + cat->idx_base); + ret_result = duk__handle_return(thr, + entry_thread, + entry_callstack_top); + if (ret_result == DUK__RETHAND_RESTART) { + goto restart_execution; + } + DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED); + + DUK_DDD(DUK_DDDPRINT("exiting executor after ENDFIN and RETURN (pseudo) longjmp type")); + return; + } + case DUK_LJ_TYPE_BREAK: + case DUK_LJ_TYPE_CONTINUE: { + duk_uint_t label_id; + duk_small_uint_t lj_type; + + /* Not necessary to unwind catchstack: break/continue + * handling will do it. The finally flag of 'cat' is + * no longer set. The catch flag may be set, but it's + * not checked by break/continue handling. + */ +#if 0 + duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1); +#endif + + tv1 = thr->valstack + cat->idx_base; + DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); +#if defined(DUK_USE_FASTINT) + DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1)); + label_id = (duk_small_uint_t) DUK_TVAL_GET_FASTINT_U32(tv1); +#else + label_id = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1); +#endif + lj_type = cont_type; + duk__handle_break_or_continue(thr, label_id, lj_type); + goto restart_execution; + } + default: { DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with abrupt completion, lj_type=%ld -> " "dismantle catcher, re-throw error", (long) cont_type)); duk_push_tval(ctx, thr->valstack + cat->idx_base); - /* XXX: assert lj type valid */ duk_err_setup_heap_ljstate(thr, (duk_small_int_t) cont_type); DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */ duk_err_longjmp(thr); DUK_UNREACHABLE(); } + } - /* continue execution after ENDFIN */ + /* Must restart in all cases because we NULLed thr->ptr_curr_pc. */ + DUK_UNREACHABLE(); break; } @@ -68171,6 +69906,12 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { * break re-throwing for instance. */ + /* Sync so that augmentation sees up-to-date activations, NULL + * thr->ptr_curr_pc so that it's not used if side effects occur + * in augmentation or longjmp handling. + */ + DUK__SYNC_AND_NULL_CURR_PC(); + duk_dup(ctx, (duk_idx_t) bc); DUK_DDD(DUK_DDDPRINT("THROW ERROR (BYTECODE): %!dT (before throw augment)", (duk_tval *) duk_get_tval(ctx, -1))); @@ -68184,7 +69925,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */ duk_err_longjmp(thr); - DUK_UNREACHABLE(); break; } @@ -68210,10 +69950,14 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { * from precompiled bytecode. */ #if defined(DUK_USE_DEBUGGER_SUPPORT) - DUK_D(DUK_DPRINT("DEBUGGER statement encountered, halt execution")); if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) { - DUK_HEAP_SET_PAUSED(thr->heap); + DUK_D(DUK_DPRINT("DEBUGGER statement encountered, halt execution")); + DUK__SYNC_AND_NULL_CURR_PC(); + duk_debug_halt_execution(thr, 1 /*use_prev_pc*/); + DUK_D(DUK_DPRINT("DEBUGGER statement finished, resume execution")); goto restart_execution; + } else { + DUK_D(DUK_DPRINT("DEBUGGER statement ignored, debugger not attached")); } #else DUK_D(DUK_DPRINT("DEBUGGER statement ignored, no debugger support")); @@ -68222,43 +69966,23 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { } case DUK_EXTRAOP_BREAK: { - duk_context *ctx = (duk_context *) thr; duk_uint_fast_t bc = DUK_DEC_BC(ins); - /* always the "slow break" variant (longjmp'ing); a "fast break" is - * simply an DUK_OP_JUMP. - */ - DUK_DDD(DUK_DDDPRINT("BREAK: %ld", (long) bc)); - duk_push_uint(ctx, (duk_uint_t) bc); - duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_BREAK); - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */ - duk_err_longjmp(thr); - - DUK_UNREACHABLE(); - break; + DUK__SYNC_AND_NULL_CURR_PC(); + duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_BREAK); + goto restart_execution; } case DUK_EXTRAOP_CONTINUE: { - duk_context *ctx = (duk_context *) thr; duk_uint_fast_t bc = DUK_DEC_BC(ins); - /* always the "slow continue" variant (longjmp'ing); a "fast continue" is - * simply an DUK_OP_JUMP. - */ - DUK_DDD(DUK_DDDPRINT("CONTINUE: %ld", (long) bc)); - duk_push_uint(ctx, (duk_uint_t) bc); - duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_CONTINUE); - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */ - duk_err_longjmp(thr); - - DUK_UNREACHABLE(); - break; + DUK__SYNC_AND_NULL_CURR_PC(); + duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_CONTINUE); + goto restart_execution; } case DUK_EXTRAOP_BNOT: { @@ -68313,7 +70037,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { cat->flags = DUK_CAT_TYPE_LABEL | (bc << DUK_CAT_LABEL_SHIFT); cat->callstack_index = thr->callstack_top - 1; - cat->pc_base = act->pc; /* pre-incremented, points to first jump slot */ + cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */ cat->idx_base = 0; /* unused for label */ cat->h_varname = NULL; @@ -68322,7 +70046,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { (long) cat->flags, (long) cat->callstack_index, (long) cat->pc_base, (long) cat->idx_base, (duk_heaphdr *) cat->h_varname, (long) DUK_CAT_GET_LABEL(cat))); - act->pc += 2; /* skip jump slots */ + curr_pc += 2; /* skip jump slots */ break; } @@ -68347,32 +70071,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { break; } -#ifdef DUK_USE_DEBUG - case DUK_EXTRAOP_DUMPREG: { - DUK_D(DUK_DPRINT("DUMPREG: %ld -> %!T", - (long) DUK_DEC_BC(ins), - (duk_tval *) duk_get_tval((duk_context *) thr, (duk_idx_t) DUK_DEC_BC(ins)))); - break; - } - - case DUK_EXTRAOP_DUMPREGS: { - duk_idx_t i, i_top; - i_top = duk_get_top((duk_context *) thr); - DUK_D(DUK_DPRINT("DUMPREGS: %ld regs", (long) i_top)); - for (i = 0; i < i_top; i++) { - DUK_D(DUK_DPRINT(" r%ld -> %!dT", - (long) i, - (duk_tval *) duk_get_tval((duk_context *) thr, i))); - } - break; - } - - case DUK_EXTRAOP_LOGMARK: { - DUK_D(DUK_DPRINT("LOGMARK: mark %ld at pc %ld", (long) DUK_DEC_BC(ins), (long) (act->pc - 1))); /* -1, autoinc */ - break; - } -#endif /* DUK_USE_DEBUG */ - default: { DUK__INTERNAL_ERROR("invalid extra opcode"); } @@ -68400,7 +70098,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { #endif } +#undef DUK__LONGJMP_RESTART +#undef DUK__LONGJMP_FINISHED +#undef DUK__LONGJMP_RETHROW + +#undef DUK__RETHAND_RESTART +#undef DUK__RETHAND_FINISHED + #undef DUK__INTERNAL_ERROR +#undef DUK__SYNC_CURR_PC +#undef DUK__SYNC_AND_NULL_CURR_PC #line 1 "duk_js_ops.c" /* * Ecmascript specification algorithm and conversion helpers. @@ -68506,6 +70213,7 @@ DUK_INTERNAL duk_bool_t duk_js_toboolean(duk_tval *tv) { /* number */ duk_double_t d; int c; + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv)); d = DUK_TVAL_GET_DOUBLE(tv); c = DUK_FPCLASSIFY((double) d); @@ -68644,6 +70352,7 @@ DUK_INTERNAL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv) { #endif default: { /* number */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv)); return DUK_TVAL_GET_DOUBLE(tv); } @@ -69041,6 +70750,8 @@ DUK_INTERNAL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, d case DUK_TAG_FASTINT: #endif default: { + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x)); + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_y)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_y)); DUK_UNREACHABLE(); @@ -69690,6 +71401,7 @@ DUK_INTERNAL duk_hstring *duk_js_typeof(duk_hthread *thr, duk_tval *tv_x) { #endif default: { /* number */ + DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x)); DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x)); stridx = DUK_STRIDX_LC_NUMBER; break; @@ -69780,8 +71492,8 @@ DUK_INTERNAL duk_uarridx_t duk_js_to_arrayindex_string_helper(duk_hstring *h) { * convenient field). The prototype chain is not followed in the ordinary * sense for variable lookups. * - * See identifier-handling.txt for more details on the identifier algorithms - * and the internal representation. See function-objects.txt for details on + * See identifier-handling.rst for more details on the identifier algorithms + * and the internal representation. See function-objects.rst for details on * what function templates and instances are expected to look like. * * Care must be taken to avoid duk_tval pointer invalidation caused by @@ -69822,7 +71534,7 @@ typedef struct { * * See E5 Section 13.2 for detailed requirements on the function objects; * there are no similar requirements for function "templates" which are an - * implementation dependent internal feature. Also see function-objects.txt + * implementation dependent internal feature. Also see function-objects.rst * for a discussion on the function instance properties provided by this * implementation. * @@ -69980,7 +71692,7 @@ void duk_js_push_closure(duk_hthread *thr, * _Lexenv is always set; _Varenv defaults to _Lexenv if missing, * so _Varenv is only set if _Lexenv != _Varenv. * - * This is relatively complex, see doc/identifier-handling.txt. + * This is relatively complex, see doc/identifier-handling.rst. */ if (DUK_HOBJECT_HAS_NEWENV(&fun_temp->obj)) { @@ -70653,6 +72365,8 @@ duk_bool_t duk__get_identifier_reference(duk_hthread *thr, duk_bool_t parents, duk__id_lookup_result *out) { duk_tval *tv; + duk_tval *tv_target; + duk_tval tv_name; duk_uint_t sanity; DUK_ASSERT(thr != NULL); @@ -70814,7 +72528,8 @@ duk_bool_t duk__get_identifier_reference(duk_hthread *thr, * * Binding (target) object is an external, uncontrolled object. * Identifier may be bound in an ancestor property, and may be - * an accessor. + * an accessor. Target can also be a Proxy which we must support + * here. */ /* XXX: we could save space by using _Target OR _This. If _Target, assume @@ -70823,24 +72538,38 @@ duk_bool_t duk__get_identifier_reference(duk_hthread *thr, */ duk_hobject *target; + duk_bool_t found; DUK_ASSERT(cl == DUK_HOBJECT_CLASS_OBJENV); - tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_TARGET(thr)); - DUK_ASSERT(tv != NULL); - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv)); - target = DUK_TVAL_GET_OBJECT(tv); + tv_target = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_TARGET(thr)); + DUK_ASSERT(tv_target != NULL); + DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_target)); + target = DUK_TVAL_GET_OBJECT(tv_target); DUK_ASSERT(target != NULL); - /* Note: we must traverse the prototype chain, so use an actual - * hasprop call here. The property may also be an accessor, so - * we can't get an duk_tval pointer here. + /* Target may be a Proxy or property may be an accessor, so we must + * use an actual, Proxy-aware hasprop check here. * * out->holder is NOT set to the actual duk_hobject where the - * property is found, but rather the target object. + * property is found, but rather the object binding target object. */ - if (duk_hobject_hasprop_raw(thr, target, name)) { + if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(target)) { + DUK_ASSERT(name != NULL); + DUK_TVAL_SET_STRING(&tv_name, name); + + found = duk_hobject_hasprop(thr, tv_target, &tv_name); + } else { + /* XXX: duk_hobject_hasprop() would be correct for + * non-Proxy objects too, but it is about ~20-25% + * slower at present so separate code paths for + * Proxy and non-Proxy now. + */ + found = duk_hobject_hasprop_raw(thr, target, name); + } + + if (found) { out->value = NULL; /* can't get value, may be accessor */ out->attrs = 0; /* irrelevant when out->value == NULL */ tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_THIS(thr)); @@ -71098,17 +72827,13 @@ void duk__putvar_helper(duk_hthread *thr, * (immutable binding), use duk_hobject_putprop() which * will respect mutability. */ - duk_tval tv_tmp; duk_tval *tv_val; DUK_ASSERT(ref.this_binding == NULL); /* always for register bindings */ tv_val = ref.value; DUK_ASSERT(tv_val != NULL); - DUK_TVAL_SET_TVAL(&tv_tmp, tv_val); - DUK_TVAL_SET_TVAL(tv_val, val); - DUK_TVAL_INCREF(thr, val); - DUK_TVAL_DECREF(thr, &tv_tmp); /* must be last */ + DUK_TVAL_SET_TVAL_UPDREF(thr, tv_val, val); /* side effects */ /* ref.value and ref.this_binding invalidated here */ } else { @@ -71451,12 +73176,8 @@ duk_bool_t duk__declvar_helper(duk_hthread *thr, DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); DUK_UNREF(tmp); } else { - duk_tval tv_tmp; - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx); - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - DUK_TVAL_SET_UNDEFINED_UNUSED(tv); - DUK_TVAL_DECREF(thr, &tv_tmp); + DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); } /* Here val would be potentially invalid if we didn't make @@ -73644,7 +75365,7 @@ DUK_INTERNAL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_range * and uses a minimum number of digits. The big number arithmetic has a * fixed maximum size and does not require dynamic allocations. * - * See: doc/number-conversion.txt. + * See: doc/number-conversion.rst. */ /* include removed: duk_internal.h */ @@ -74259,7 +75980,7 @@ DUK_LOCAL void duk__bi_exp_small(duk__bigint *x, duk_small_int_t b, duk_small_in * The same algorithm is used for number parsing (with b=10 and B=2) * by generating one extra digit and doing rounding manually. * - * See doc/number-conversion.txt for limitations. + * See doc/number-conversion.rst for limitations. */ /* Maximum number of digits generated. */ @@ -75905,7 +77626,7 @@ DUK_INTERNAL void duk_numconv_parse(duk_context *ctx, duk_small_int_t radix, duk /* * Regexp compilation. * - * See doc/regexp.txt for a discussion of the compilation approach and + * See doc/regexp.rst for a discussion of the compilation approach and * current limitations. * * Regexp bytecode assumes jumps can be expressed with signed 32-bit @@ -76046,7 +77767,7 @@ DUK_LOCAL void duk__remove_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t data_ * * Computing the final (adjusted) skip value, which is relative to the * first byte of the next instruction, is a bit tricky because of the - * variable length UTF-8 encoding. See doc/regexp.txt for discussion. + * variable length UTF-8 encoding. See doc/regexp.rst for discussion. */ DUK_LOCAL duk_uint32_t duk__insert_jump_offset(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_int32_t skip) { duk_small_int_t len; @@ -76079,7 +77800,7 @@ DUK_LOCAL duk_uint32_t duk__append_jump_offset(duk_re_compiler_ctx *re_ctx, duk_ * continuous range is not necessarily continuous (e.g. [x-{] is * continuous but [X-{] is not). The current algorithm creates the * canonicalized range(s) space efficiently at the cost of compile - * time execution time (see doc/regexp.txt for discussion). + * time execution time (see doc/regexp.rst for discussion). * * Note that the ctx->nranges is a context-wide temporary value * (this is OK because there cannot be multiple character classes @@ -76145,7 +77866,7 @@ DUK_LOCAL void duk__generate_ranges(void *userdata, duk_codepoint_t r1, duk_code * lookaheads, capturing parentheses, and non-capturing parentheses. * * The function determines whether the entire disjunction is a 'simple atom' - * (see doc/regexp.txt discussion on 'simple quantifiers') and if so, + * (see doc/regexp.rst discussion on 'simple quantifiers') and if so, * returns the atom character length which is needed by the caller to keep * track of its own atom character length. A disjunction with more than one * alternative is never considered a simple atom (although in some cases @@ -76846,7 +78567,7 @@ DUK_INTERNAL void duk_regexp_compile(duk_hthread *thr) { re_ctx.lex.input = DUK_HSTRING_GET_DATA(h_pattern); re_ctx.lex.input_length = DUK_HSTRING_GET_BYTELEN(h_pattern); re_ctx.lex.token_limit = DUK_RE_COMPILE_TOKEN_LIMIT; - re_ctx.recursion_limit = DUK_RE_COMPILE_RECURSION_LIMIT; + re_ctx.recursion_limit = DUK_USE_REGEXP_COMPILER_RECLIMIT; re_ctx.re_flags = duk__parse_regexp_flags(thr, h_flags); DUK_BW_INIT_PUSHBUF(thr, &re_ctx.bw, DUK__RE_INITIAL_BUFSIZE); @@ -77163,7 +78884,7 @@ DUK_LOCAL const duk_uint8_t *duk__match_regexp(duk_re_matcher_ctx *re_ctx, const * * There is no opcode for matching multiple characters. The * regexp compiler has trouble joining strings efficiently - * during compilation. See doc/regexp.txt for more discussion. + * during compilation. See doc/regexp.rst for more discussion. */ duk_codepoint_t c1, c2; @@ -77702,7 +79423,7 @@ DUK_LOCAL void duk__regexp_match_helper(duk_hthread *thr, duk_small_int_t force_ re_ctx.bytecode = (duk_uint8_t *) DUK_HSTRING_GET_DATA(h_bytecode); re_ctx.bytecode_end = re_ctx.bytecode + DUK_HSTRING_GET_BYTELEN(h_bytecode); re_ctx.saved = NULL; - re_ctx.recursion_limit = DUK_RE_EXECUTE_RECURSION_LIMIT; + re_ctx.recursion_limit = DUK_USE_REGEXP_EXECUTOR_RECLIMIT; re_ctx.steps_limit = DUK_RE_EXECUTE_STEPS_LIMIT; /* read header */ @@ -78367,7 +80088,7 @@ DUK_LOCAL void duk__selftest_64bit_arithmetic(void) { * Casting */ -DUK_LOCAL void duk__selftest_cast_double_to_uint(void) { +DUK_LOCAL void duk__selftest_cast_double_to_small_uint(void) { /* * https://github.com/svaarala/duktape/issues/127#issuecomment-77863473 */ @@ -78378,12 +80099,14 @@ DUK_LOCAL void duk__selftest_cast_double_to_uint(void) { duk_double_t d1v, d2v; duk_small_uint_t uv; + /* Test without volatiles */ + d1 = 1.0; u = (duk_small_uint_t) d1; d2 = (duk_double_t) u; if (!(d1 == 1.0 && u == 1 && d2 == 1.0 && d1 == d2)) { - DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to uint cast failed"); + DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_small_uint_t cast failed"); } /* Same test with volatiles */ @@ -78393,7 +80116,26 @@ DUK_LOCAL void duk__selftest_cast_double_to_uint(void) { d2v = (duk_double_t) uv; if (!(d1v == 1.0 && uv == 1 && d2v == 1.0 && d1v == d2v)) { - DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to uint cast failed"); + DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_small_uint_t cast failed"); + } +} + +DUK_LOCAL void duk__selftest_cast_double_to_uint32(void) { + /* + * This test fails on an exotic ARM target; double-to-uint + * cast is incorrectly clamped to -signed- int highest value. + * + * https://github.com/svaarala/duktape/issues/336 + */ + + duk_double_t dv; + duk_uint32_t uv; + + dv = 3735928559.0; /* 0xdeadbeef in decimal */ + uv = (duk_uint32_t) dv; + + if (uv != 0xdeadbeefUL) { + DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_uint32_t cast failed"); } } @@ -78412,7 +80154,8 @@ DUK_INTERNAL void duk_selftest_run_tests(void) { duk__selftest_double_zero_sign(); duk__selftest_struct_align(); duk__selftest_64bit_arithmetic(); - duk__selftest_cast_double_to_uint(); + duk__selftest_cast_double_to_small_uint(); + duk__selftest_cast_double_to_uint32(); } #undef DUK__DBLUNION_CMP_TRUE @@ -78841,6 +80584,5296 @@ const duk_uint8_t duk_unicode_caseconv_lc[616] = { 125,44,109,2,81,44,110,2,113,44,111,2,80,44,112,2,82,167,125,29,121,167, 141,2,101,2,2,97,0,52,129,131,128, }; + +/* FIXME: CONDITIONAL */ +/* + * Automatically generated by extract_caseconv.py, do not edit! + */ + +const duk_uint16_t duk_unicode_re_canon_lookup[65536] = { +0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27, +28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52, 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+65522,65523,65524,65525,65526,65527,65528,65529,65530,65531,65532,65533, +65534,65535, +}; #line 1 "duk_util_bitdecoder.c" /* * Bitstream decoder. @@ -79237,8 +86270,7 @@ DUK_INTERNAL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *b * Not really bufwriter related, but currently used together. */ -DUK_ALWAYS_INLINE -DUK_INTERNAL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) { +DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) { union { duk_uint8_t b[2]; duk_uint16_t x; @@ -79250,8 +86282,7 @@ DUK_INTERNAL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) { return u.x; } -DUK_ALWAYS_INLINE -DUK_INTERNAL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) { +DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) { union { duk_uint8_t b[4]; duk_uint32_t x; @@ -79263,8 +86294,7 @@ DUK_INTERNAL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) { return u.x; } -DUK_ALWAYS_INLINE -DUK_INTERNAL duk_double_t duk_raw_read_double_be(duk_uint8_t **p) { +DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_raw_read_double_be(duk_uint8_t **p) { duk_double_union du; union { duk_uint8_t b[4]; @@ -79282,8 +86312,7 @@ DUK_INTERNAL duk_double_t duk_raw_read_double_be(duk_uint8_t **p) { return du.d; } -DUK_ALWAYS_INLINE -DUK_INTERNAL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) { +DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) { union { duk_uint8_t b[2]; duk_uint16_t x; @@ -79294,8 +86323,7 @@ DUK_INTERNAL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) { *p += 2; } -DUK_ALWAYS_INLINE -DUK_INTERNAL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) { +DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) { union { duk_uint8_t b[4]; duk_uint32_t x; @@ -79306,8 +86334,7 @@ DUK_INTERNAL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) { *p += 4; } -DUK_ALWAYS_INLINE -DUK_INTERNAL void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val) { +DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val) { duk_double_union du; union { duk_uint8_t b[4]; diff --git a/javascript/duktape/duktape.h b/javascript/duktape/duktape.h index 8d4c31312..6fba18d8b 100644 --- a/javascript/duktape/duktape.h +++ b/javascript/duktape/duktape.h @@ -1,11 +1,12 @@ /* - * Duktape public API for Duktape 1.2.99. + * Duktape public API for Duktape 1.3.99. * See the API reference for documentation on call semantics. * The exposed API is inside the DUK_API_PUBLIC_H_INCLUDED * include guard. Other parts of the header are Duktape * internal and related to platform/compiler/feature detection. * - * Git commit 2a41d0a38eef5edfe8691cf09427b6ee8a3ad5c9 (v1.2.0-310-g2a41d0a). + * Git commit 40453939c5a5aa16898d19bbac4d02f77196cc8b (v1.3.0-138-g4045393). + * Git branch regexp-canonicalize-lookup. * * See Duktape AUTHORS.rst and LICENSE.txt for copyright and * licensing information. @@ -59,8 +60,9 @@ * Please include an e-mail address, a link to your GitHub profile, or something * similar to allow your contribution to be identified accurately. * - * The following people have contributed code and agreed to irrevocably license - * their contributions under the Duktape ``LICENSE.txt`` (in order of appearance): + * The following people have contributed code, website contents, or Wiki contents, + * and agreed to irrevocably license their contributions under the Duktape + * ``LICENSE.txt`` (in order of appearance): * * * Sami Vaarala * * Niki Dobrev @@ -68,6 +70,7 @@ * * L\u00e1szl\u00f3 Lang\u00f3 * * Legimet * * Karl Skomski + * * Bruce Pascoe * * Other contributions * =================== @@ -208,13 +211,16 @@ struct duk_number_list_entry { * have 99 for patch level (e.g. 0.10.99 would be a development version * after 0.10.0 but before the next official release). */ -#define DUK_VERSION 10299L +#define DUK_VERSION 10399L -/* Git describe for Duktape build. Useful for non-official snapshot builds - * so that application code can easily log which Duktape snapshot was used. - * Not available in the Ecmascript environment. +/* Git commit, describe, and branch for Duktape build. Useful for + * non-official snapshot builds so that application code can easily log + * which Duktape snapshot was used. Not available in the Ecmascript + * environment. */ -#define DUK_GIT_DESCRIBE "v1.2.0-310-g2a41d0a" +#define DUK_GIT_COMMIT "40453939c5a5aa16898d19bbac4d02f77196cc8b" +#define DUK_GIT_DESCRIBE "v1.3.0-138-g4045393" +#define DUK_GIT_BRANCH "regexp-canonicalize-lookup" /* Duktape debug protocol version used by this build. */ #define DUK_DEBUG_PROTOCOL_VERSION 1 @@ -276,9 +282,9 @@ struct duk_number_list_entry { #define DUK_ENUM_NO_PROXY_BEHAVIOR (1 << 5) /* enumerate a proxy object itself without invoking proxy behavior */ /* Compilation flags for duk_compile() and duk_eval() */ -#define DUK_COMPILE_EVAL (1 << 0) /* compile eval code (instead of program) */ -#define DUK_COMPILE_FUNCTION (1 << 1) /* compile function code (instead of program) */ -#define DUK_COMPILE_STRICT (1 << 2) /* use strict (outer) context for program, eval, or function */ +#define DUK_COMPILE_EVAL (1 << 0) /* compile eval code (instead of global code) */ +#define DUK_COMPILE_FUNCTION (1 << 1) /* compile function code (instead of global code) */ +#define DUK_COMPILE_STRICT (1 << 2) /* use strict (outer) context for global, eval, or function code */ #define DUK_COMPILE_SAFE (1 << 3) /* (internal) catch compilation errors */ #define DUK_COMPILE_NORESULT (1 << 4) /* (internal) omit eval result */ #define DUK_COMPILE_NOSOURCE (1 << 5) /* (internal) no source string on stack */ @@ -536,16 +542,36 @@ DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_e duk_push_error_object_va_raw((ctx), (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), (fmt), (ap)) #define DUK_BUF_FLAG_DYNAMIC (1 << 0) /* internal flag: dynamic buffer */ -#define DUK_BUF_FLAG_NOZERO (1 << 1) /* internal flag: don't zero allocated buffer */ +#define DUK_BUF_FLAG_EXTERNAL (1 << 1) /* internal flag: external buffer */ +#define DUK_BUF_FLAG_NOZERO (1 << 2) /* internal flag: don't zero allocated buffer */ DUK_EXTERNAL_DECL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_small_uint_t flags); #define duk_push_buffer(ctx,size,dynamic) \ - duk_push_buffer_raw((ctx), (size), (dynamic)); + duk_push_buffer_raw((ctx), (size), (dynamic) ? DUK_BUF_FLAG_DYNAMIC : 0); #define duk_push_fixed_buffer(ctx,size) \ - duk_push_buffer_raw((ctx), (size), 0 /*dynamic*/) + duk_push_buffer_raw((ctx), (size), 0 /*flags*/) #define duk_push_dynamic_buffer(ctx,size) \ - duk_push_buffer_raw((ctx), (size), 1 /*dynamic*/) + duk_push_buffer_raw((ctx), (size), DUK_BUF_FLAG_DYNAMIC /*flags*/) +#define duk_push_external_buffer(ctx) \ + ((void) duk_push_buffer_raw((ctx), 0, DUK_BUF_FLAG_DYNAMIC | DUK_BUF_FLAG_EXTERNAL)) + +#define DUK_BUFOBJ_CREATE_ARRBUF (1 << 4) /* internal flag: create backing ArrayBuffer; keep in one byte */ +#define DUK_BUFOBJ_DUKTAPE_BUFFER 0 +#define DUK_BUFOBJ_NODEJS_BUFFER 1 +#define DUK_BUFOBJ_ARRAYBUFFER 2 +#define DUK_BUFOBJ_DATAVIEW (3 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_INT8ARRAY (4 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_UINT8ARRAY (5 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_UINT8CLAMPEDARRAY (6 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_INT16ARRAY (7 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_UINT16ARRAY (8 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_INT32ARRAY (9 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_UINT32ARRAY (10 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_FLOAT32ARRAY (11 | DUK_BUFOBJ_CREATE_ARRBUF) +#define DUK_BUFOBJ_FLOAT64ARRAY (12 | DUK_BUFOBJ_CREATE_ARRBUF) + +DUK_EXTERNAL_DECL void duk_push_buffer_object(duk_context *ctx, duk_idx_t idx_buffer, duk_size_t byte_offset, duk_size_t byte_length, duk_uint_t flags); DUK_EXTERNAL_DECL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr); @@ -592,8 +618,18 @@ DUK_EXTERNAL_DECL duk_bool_t duk_is_thread(duk_context *ctx, duk_idx_t index); DUK_EXTERNAL_DECL duk_bool_t duk_is_callable(duk_context *ctx, duk_idx_t index); DUK_EXTERNAL_DECL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index); DUK_EXTERNAL_DECL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index); +DUK_EXTERNAL_DECL duk_bool_t duk_is_external_buffer(duk_context *ctx, duk_idx_t index); + +#define duk_is_primitive(ctx,index) \ + duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_UNDEFINED | \ + DUK_TYPE_MASK_NULL | \ + DUK_TYPE_MASK_BOOLEAN | \ + DUK_TYPE_MASK_NUMBER | \ + DUK_TYPE_MASK_STRING | \ + DUK_TYPE_MASK_BUFFER | \ + DUK_TYPE_MASK_POINTER | \ + DUK_TYPE_MASK_LIGHTFUNC) -DUK_EXTERNAL_DECL duk_bool_t duk_is_primitive(duk_context *ctx, duk_idx_t index); #define duk_is_object_coercible(ctx,index) \ duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_BOOLEAN | \ DUK_TYPE_MASK_NUMBER | \ @@ -719,6 +755,7 @@ DUK_EXTERNAL_DECL void duk_json_decode(duk_context *ctx, duk_idx_t index); DUK_EXTERNAL_DECL void *duk_resize_buffer(duk_context *ctx, duk_idx_t index, duk_size_t new_size); DUK_EXTERNAL_DECL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size); +DUK_EXTERNAL_DECL void duk_config_buffer(duk_context *ctx, duk_idx_t index, void *ptr, duk_size_t len); /* * Property access @@ -831,6 +868,7 @@ DUK_EXTERNAL_DECL duk_int_t duk_pcall(duk_context *ctx, duk_idx_t nargs); DUK_EXTERNAL_DECL duk_int_t duk_pcall_method(duk_context *ctx, duk_idx_t nargs); DUK_EXTERNAL_DECL duk_int_t duk_pcall_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs); DUK_EXTERNAL_DECL void duk_new(duk_context *ctx, duk_idx_t nargs); +DUK_EXTERNAL_DECL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs); DUK_EXTERNAL_DECL duk_int_t duk_safe_call(duk_context *ctx, duk_safe_call_function func, duk_idx_t nargs, duk_idx_t nrets); /* @@ -1314,7 +1352,7 @@ typedef union duk_double_union duk_double_union; * * When packed duk_tval is used, the NaN space is used to store pointers * and other tagged values in addition to NaNs. Actual NaNs are normalized - * to a specific format. The macros below are used by the implementation + * to a specific quiet NaN. The macros below are used by the implementation * to check and normalize NaN values when they might be created. The macros * are essentially NOPs when the non-packed duk_tval representation is used. * @@ -1322,7 +1360,8 @@ typedef union duk_double_union duk_double_union; * the packed duk_tval and works correctly for all NaNs except those that * begin with 0x7ff0. Since the 'normalized NaN' values used with packed * duk_tval begin with 0x7ff8, the partial check is reliable when packed - * duk_tval is used. + * duk_tval is used. The 0x7ff8 prefix means the normalized NaN will be a + * quiet NaN regardless of its remaining lower bits. * * The ME variant below is specifically for ARM byte order, which has the * feature that while doubles have a mixed byte order (32107654), unsigned