From 6ac1778676f4259c10b0629ccd9df319a5d1baeb Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 30 Nov 2018 11:52:48 -0800 Subject: [PATCH] tcg: Return success from patch_reloc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This will move the assert for success from within (subroutines of) patch_reloc into the callers. It will also let new code do something different when a relocation is out of range. For the moment, all backends are trivially converted to return true. Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- tcg/aarch64/tcg-target.inc.c | 3 ++- tcg/arm/tcg-target.inc.c | 3 ++- tcg/i386/tcg-target.inc.c | 3 ++- tcg/mips/tcg-target.inc.c | 3 ++- tcg/ppc/tcg-target.inc.c | 3 ++- tcg/s390/tcg-target.inc.c | 3 ++- tcg/sparc/tcg-target.inc.c | 3 ++- tcg/tcg.c | 8 +++++--- tcg/tci/tcg-target.inc.c | 3 ++- 9 files changed, 21 insertions(+), 11 deletions(-) diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c index 28de0226fb..16f08c59c4 100644 --- a/tcg/aarch64/tcg-target.inc.c +++ b/tcg/aarch64/tcg-target.inc.c @@ -94,7 +94,7 @@ static inline void reloc_pc19(tcg_insn_unit *code_ptr, tcg_insn_unit *target) *code_ptr = deposit32(*code_ptr, 5, 19, offset); } -static inline void patch_reloc(tcg_insn_unit *code_ptr, int type, +static inline bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { tcg_debug_assert(addend == 0); @@ -109,6 +109,7 @@ static inline void patch_reloc(tcg_insn_unit *code_ptr, int type, default: tcg_abort(); } + return true; } #define TCG_CT_CONST_AIMM 0x100 diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c index 1651f00281..deefa20fbf 100644 --- a/tcg/arm/tcg-target.inc.c +++ b/tcg/arm/tcg-target.inc.c @@ -193,7 +193,7 @@ static inline void reloc_pc24(tcg_insn_unit *code_ptr, tcg_insn_unit *target) *code_ptr = (*code_ptr & ~0xffffff) | (offset & 0xffffff); } -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { tcg_debug_assert(addend == 0); @@ -229,6 +229,7 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type, } else { g_assert_not_reached(); } + return true; } #define TCG_CT_CONST_ARM 0x100 diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c index 436195894b..5c88f1f36b 100644 --- a/tcg/i386/tcg-target.inc.c +++ b/tcg/i386/tcg-target.inc.c @@ -167,7 +167,7 @@ static bool have_lzcnt; static tcg_insn_unit *tb_ret_addr; -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { value += addend; @@ -191,6 +191,7 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type, default: tcg_abort(); } + return true; } #if TCG_TARGET_REG_BITS == 64 diff --git a/tcg/mips/tcg-target.inc.c b/tcg/mips/tcg-target.inc.c index e21cb1ae28..a06ff257fa 100644 --- a/tcg/mips/tcg-target.inc.c +++ b/tcg/mips/tcg-target.inc.c @@ -168,12 +168,13 @@ static inline void reloc_26(tcg_insn_unit *pc, tcg_insn_unit *target) *pc = deposit32(*pc, 0, 26, reloc_26_val(pc, target)); } -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { tcg_debug_assert(type == R_MIPS_PC16); tcg_debug_assert(addend == 0); reloc_pc16(code_ptr, (tcg_insn_unit *)value); + return true; } #define TCG_CT_CONST_ZERO 0x100 diff --git a/tcg/ppc/tcg-target.inc.c b/tcg/ppc/tcg-target.inc.c index 2e2a22f579..860b0d36e1 100644 --- a/tcg/ppc/tcg-target.inc.c +++ b/tcg/ppc/tcg-target.inc.c @@ -513,7 +513,7 @@ static const uint32_t tcg_to_isel[] = { [TCG_COND_GTU] = ISEL | BC_(7, CR_GT), }; -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { tcg_insn_unit *target; @@ -548,6 +548,7 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type, default: g_assert_not_reached(); } + return true; } static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt, diff --git a/tcg/s390/tcg-target.inc.c b/tcg/s390/tcg-target.inc.c index 96c344142e..68a4c60394 100644 --- a/tcg/s390/tcg-target.inc.c +++ b/tcg/s390/tcg-target.inc.c @@ -366,7 +366,7 @@ static void * const qemu_st_helpers[16] = { static tcg_insn_unit *tb_ret_addr; uint64_t s390_facilities; -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { intptr_t pcrel2; @@ -393,6 +393,7 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type, default: g_assert_not_reached(); } + return true; } /* parse target specific constraints */ diff --git a/tcg/sparc/tcg-target.inc.c b/tcg/sparc/tcg-target.inc.c index 8a151b9cac..55144c437c 100644 --- a/tcg/sparc/tcg-target.inc.c +++ b/tcg/sparc/tcg-target.inc.c @@ -291,7 +291,7 @@ static inline int check_fit_i32(int32_t val, unsigned int bits) # define check_fit_ptr check_fit_i32 #endif -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { uint32_t insn = *code_ptr; @@ -316,6 +316,7 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type, } *code_ptr = insn; + return true; } /* parse target specific constraints */ diff --git a/tcg/tcg.c b/tcg/tcg.c index e85133ef05..54f1272187 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -66,7 +66,7 @@ static void tcg_target_init(TCGContext *s); static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode); static void tcg_target_qemu_prologue(TCGContext *s); -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend); /* The CIE and FDE header definitions will be common to all hosts. */ @@ -268,7 +268,8 @@ static void tcg_out_reloc(TCGContext *s, tcg_insn_unit *code_ptr, int type, /* FIXME: This may break relocations on RISC targets that modify instruction fields in place. The caller may not have written the initial value. */ - patch_reloc(code_ptr, type, l->u.value, addend); + bool ok = patch_reloc(code_ptr, type, l->u.value, addend); + tcg_debug_assert(ok); } else { /* add a new relocation entry */ r = tcg_malloc(sizeof(TCGRelocation)); @@ -288,7 +289,8 @@ static void tcg_out_label(TCGContext *s, TCGLabel *l, tcg_insn_unit *ptr) tcg_debug_assert(!l->has_value); for (r = l->u.first_reloc; r != NULL; r = r->next) { - patch_reloc(r->ptr, r->type, value, r->addend); + bool ok = patch_reloc(r->ptr, r->type, value, r->addend); + tcg_debug_assert(ok); } l->has_value = 1; diff --git a/tcg/tci/tcg-target.inc.c b/tcg/tci/tcg-target.inc.c index 62ed097254..0015a98485 100644 --- a/tcg/tci/tcg-target.inc.c +++ b/tcg/tci/tcg-target.inc.c @@ -369,7 +369,7 @@ static const char *const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { }; #endif -static void patch_reloc(tcg_insn_unit *code_ptr, int type, +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, intptr_t value, intptr_t addend) { /* tcg_out_reloc always uses the same type, addend. */ @@ -381,6 +381,7 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type, } else { tcg_patch64(code_ptr, value); } + return true; } /* Parse target specific constraints. */