mirror of https://github.com/frida/tinycc
tccpp.c: compile 'tcc_predefs' from string
It might have advantages in cases if tcc/libtcc does not depend on extern files. Also: - apply "stray \\ ..." check to macros only. For files it was already checked. Add positive test.
This commit is contained in:
grischka
parent
cbef54653a
commit
781872517d
2
Makefile
2
Makefile
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@ -344,7 +344,7 @@ endif
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# uninstall on windows
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uninstall-win:
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@rm -fv $(foreach P,libtcc.dll $(PROGS) *-tcc.exe,"$(bindir)/$P")
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@rm -fv $(foreach P,libtcc.dll $(PROGS) *-tcc.exe,"$(bindir)"/$P)
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@rm -fr $(foreach P,doc examples include lib libtcc,"$(tccdir)/$P"/*)
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@rm -frv $(foreach P,doc examples include lib libtcc,"$(tccdir)/$P")
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@ -1,64 +0,0 @@
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#ifdef __x86_64__
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#ifndef _WIN64
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//This should be in sync with the declaration in our lib/libtcc1.c
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/* GCC compatible definition of va_list. */
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typedef struct {
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unsigned int gp_offset;
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unsigned int fp_offset;
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union {
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unsigned int overflow_offset;
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char *overflow_arg_area;
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};
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char *reg_save_area;
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} __builtin_va_list[1];
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void *__va_arg(__builtin_va_list ap, int arg_type, int size, int align);
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#define __builtin_va_start(ap, last) \
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(*(ap) = *(__builtin_va_list)((char*)__builtin_frame_address(0) - 24))
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#define __builtin_va_arg(ap, t) \
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(*(t *)(__va_arg(ap, __builtin_va_arg_types(t), sizeof(t), __alignof__(t))))
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#define __builtin_va_copy(dest, src) (*(dest) = *(src))
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#else /* _WIN64 */
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typedef char *__builtin_va_list;
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#define __builtin_va_arg(ap, t) ((sizeof(t) > 8 || (sizeof(t) & (sizeof(t) - 1))) \
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? **(t **)((ap += 8) - 8) : *(t *)((ap += 8) - 8))
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#endif
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#elif __arm__
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typedef char *__builtin_va_list;
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#define _tcc_alignof(type) ((int)&((struct {char c;type x;} *)0)->x)
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#define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
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& ~(_tcc_alignof(type) - 1))
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#define __builtin_va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
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#define __builtin_va_arg(ap,type) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
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&~3), *(type *)(ap - ((sizeof(type)+3)&~3)))
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#elif defined(__aarch64__)
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typedef struct {
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void *__stack;
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void *__gr_top;
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void *__vr_top;
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int __gr_offs;
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int __vr_offs;
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} __builtin_va_list;
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#elif defined __riscv
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typedef char *__builtin_va_list;
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#define __va_reg_size (__riscv_xlen >> 3)
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#define _tcc_align(addr,type) (((unsigned long)addr + __alignof__(type) - 1) \
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& -(__alignof__(type)))
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#define __builtin_va_arg(ap,type) (*(sizeof(type) > (2*__va_reg_size) ? *(type **)((ap += __va_reg_size) - __va_reg_size) : (ap = (va_list)(_tcc_align(ap,type) + (sizeof(type)+__va_reg_size - 1)& -__va_reg_size), (type *)(ap - ((sizeof(type)+ __va_reg_size - 1)& -__va_reg_size)))))
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#else /* __i386__ */
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typedef char *__builtin_va_list;
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#define __builtin_va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
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#define __builtin_va_arg(ap,type) (ap += (sizeof(type)+3)&~3, *(type *)(ap - ((sizeof(type)+3)&~3)))
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#endif
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#ifndef __builtin_va_copy
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#define __builtin_va_copy(dest, src) (dest) = (src)
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#endif
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#define __builtin_va_end(ap) (void)(ap)
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64
tccpp.c
64
tccpp.c
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@ -3430,8 +3430,6 @@ static int macro_subst_tok(
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get_tok_str(s->v, 0));
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}
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parse_flags = saved_parse_flags;
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/* now subst each arg */
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mstr = macro_arg_subst(nested_list, mstr, args);
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/* free memory */
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@ -3446,6 +3444,7 @@ static int macro_subst_tok(
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sym_free(sa);
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sa = sa1;
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}
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parse_flags = saved_parse_flags;
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}
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sym_push2(nested_list, s->v, 0, 0);
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@ -3551,7 +3550,8 @@ ST_FUNC void next(void)
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/* end of macro or unget token string */
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end_macro();
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goto redo;
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}
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} else if (tok == '\\' && !(parse_flags & PARSE_FLAG_ACCEPT_STRAYS))
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tcc_error("stray '\\' in program");
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} else if (tok >= TOK_IDENT && (parse_flags & PARSE_FLAG_PREPROCESS)) {
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Sym *s;
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/* if reading from file, try to substitute macros */
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@ -3572,8 +3572,7 @@ ST_FUNC void next(void)
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} else if (tok == TOK_PPSTR) {
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if (parse_flags & PARSE_FLAG_TOK_STR)
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parse_string((char *)tokc.str.data, tokc.str.size - 1);
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} else if (tok == '\\' && !(parse_flags & PARSE_FLAG_ACCEPT_STRAYS))
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tcc_error("stray '\\' in program");
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}
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}
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/* push back current token and set current token to 'last_tok'. Only
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@ -3588,6 +3587,59 @@ ST_INLN void unget_tok(int last_tok)
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tok = last_tok;
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}
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static void tcc_predefs(CString *cstr)
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{
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cstr_cat(cstr,
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#if defined TCC_TARGET_X86_64
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#ifndef TCC_TARGET_PE
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/* GCC compatible definition of va_list. This should be in sync
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with the declaration in our lib/libtcc1.c */
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"typedef struct{\n"
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"unsigned gp_offset,fp_offset;\n"
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"union{\n"
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"unsigned overflow_offset;\n"
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"char*overflow_arg_area;\n"
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"};\n"
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"char*reg_save_area;\n"
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"}__builtin_va_list[1];\n"
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"void*__va_arg(__builtin_va_list ap,int arg_type,int size,int align);\n"
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"#define __builtin_va_start(ap,last) (*(ap)=*(__builtin_va_list)((char*)__builtin_frame_address(0)-24))\n"
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"#define __builtin_va_arg(ap,t) (*(t*)(__va_arg(ap,__builtin_va_arg_types(t),sizeof(t),__alignof__(t))))\n"
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"#define __builtin_va_copy(dest,src) (*(dest)=*(src))\n"
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#else /* TCC_TARGET_PE */
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"typedef char*__builtin_va_list;\n"
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"#define __builtin_va_arg(ap,t) ((sizeof(t)>8||(sizeof(t)&(sizeof(t)-1)))?**(t**)((ap+=8)-8):*(t*)((ap+=8)-8))\n"
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"#define __builtin_va_copy(dest,src) (dest)=(src)\n"
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#endif
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#elif defined TCC_TARGET_ARM
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"typedef char*__builtin_va_list;\n"
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"#define _tcc_alignof(type) ((int)&((struct{char c;type x;}*)0)->x)\n"
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"#define _tcc_align(addr,type) (((unsigned)addr+_tcc_alignof(type)-1)&~(_tcc_alignof(type)-1))\n"
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"#define __builtin_va_start(ap,last) (ap=((char*)&(last))+((sizeof(last)+3)&~3))\n"
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"#define __builtin_va_arg(ap,type) (ap=(void*)((_tcc_align(ap,type)+sizeof(type)+3)&~3),*(type*)(ap-((sizeof(type)+3)&~3)))\n"
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"#define __builtin_va_copy(dest,src) (dest)=(src)\n"
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#elif defined TCC_TARGET_ARM64
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"typedef struct{\n"
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"void*__stack,*__gr_top,*__vr_top;\n"
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"int __gr_offs,__vr_offs;\n"
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"}__builtin_va_list;\n"
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"#define __builtin_va_copy(dest,src) (dest)=(src)\n"
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#elif defined TCC_TARGET_RISCV64
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"typedef char*__builtin_va_list;\n"
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"#define __va_reg_size (__riscv_xlen>>3)\n"
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"#define _tcc_align(addr,type) (((unsigned long)addr+__alignof__(type)-1)&-(__alignof__(type)))\n"
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"#define __builtin_va_arg(ap,type) (*(sizeof(type)>(2*__va_reg_size)?*(type**)((ap+=__va_reg_size)-__va_reg_size):(ap=(va_list)(_tcc_align(ap,type)+(sizeof(type)+__va_reg_size-1)&-__va_reg_size),(type*)(ap-((sizeof(type)+__va_reg_size-1)&-__va_reg_size)))))\n"
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"#define __builtin_va_copy(dest,src) (dest)=(src)\n"
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#else /* TCC_TARGET_I386 */
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"typedef char*__builtin_va_list;\n"
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"#define __builtin_va_start(ap,last) (ap=((char*)&(last))+((sizeof(last)+3)&~3))\n"
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"#define __builtin_va_arg(ap,t) (*(t*)((ap+=(sizeof(t)+3)&~3)-((sizeof(t)+3)&~3)))\n"
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"#define __builtin_va_copy(dest,src) (dest)=(src)\n"
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#endif
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"#define __builtin_va_end(ap) (void)(ap)\n"
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, -1);
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}
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ST_FUNC void preprocess_start(TCCState *s1, int is_asm)
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{
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CString cstr;
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@ -3616,7 +3668,7 @@ ST_FUNC void preprocess_start(TCCState *s1, int is_asm)
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if (s1->output_type == TCC_OUTPUT_MEMORY)
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cstr_printf(&cstr, "#define __TCC_RUN__ 1\n");
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if (!is_asm && s1->output_type != TCC_OUTPUT_PREPROCESS)
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cstr_cat(&cstr, "#include \"tcc_predefs.h\"\n", -1);
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tcc_predefs(&cstr);
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if (s1->cmdline_incl.size)
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cstr_cat(&cstr, s1->cmdline_incl.data, s1->cmdline_incl.size);
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//printf("%s\n", (char*)cstr.data);
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@ -328,5 +328,15 @@ int main()
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#elif defined test_stray_backslash
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#define x \a
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x
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#elif defined test_stray_backslash2
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int printf(const char*, ...);
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int main()
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{
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#define _S(x) #x
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#define S(x) _S(x)
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printf("%sn\n", S(\\));
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}
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/******************************************************************/
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#endif
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@ -156,3 +156,6 @@ bar : 3 ; 3
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[test_stray_backslash]
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60_errors_and_warnings.c:330: error: stray '\' in program
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[test_stray_backslash2]
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\n
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