diff options
| -rw-r--r-- | accel/tcg/translate-all.c | 68 | ||||
| -rw-r--r-- | tcg/tcg.c | 12 |
2 files changed, 45 insertions, 35 deletions
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 921944a5ab..ac3ee3740c 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -742,6 +742,37 @@ void page_collection_unlock(struct page_collection *set) #endif /* !CONFIG_USER_ONLY */ +/* + * Isolate the portion of code gen which can setjmp/longjmp. + * Return the size of the generated code, or negative on error. + */ +static int setjmp_gen_code(CPUArchState *env, TranslationBlock *tb, + target_ulong pc, void *host_pc, + int *max_insns, int64_t *ti) +{ + int ret = sigsetjmp(tcg_ctx->jmp_trans, 0); + if (unlikely(ret != 0)) { + return ret; + } + + tcg_func_start(tcg_ctx); + + tcg_ctx->cpu = env_cpu(env); + gen_intermediate_code(env_cpu(env), tb, *max_insns, pc, host_pc); + assert(tb->size != 0); + tcg_ctx->cpu = NULL; + *max_insns = tb->icount; + +#ifdef CONFIG_PROFILER + qatomic_set(&tcg_ctx->prof.tb_count, tcg_ctx->prof.tb_count + 1); + qatomic_set(&tcg_ctx->prof.interm_time, + tcg_ctx->prof.interm_time + profile_getclock() - *ti); + *ti = profile_getclock(); +#endif + + return tcg_gen_code(tcg_ctx, tb, pc); +} + /* Called with mmap_lock held for user mode emulation. */ TranslationBlock *tb_gen_code(CPUState *cpu, target_ulong pc, target_ulong cs_base, @@ -754,8 +785,8 @@ TranslationBlock *tb_gen_code(CPUState *cpu, int gen_code_size, search_size, max_insns; #ifdef CONFIG_PROFILER TCGProfile *prof = &tcg_ctx->prof; - int64_t ti; #endif + int64_t ti; void *host_pc; assert_memory_lock(); @@ -805,43 +836,10 @@ TranslationBlock *tb_gen_code(CPUState *cpu, ti = profile_getclock(); #endif - gen_code_size = sigsetjmp(tcg_ctx->jmp_trans, 0); - if (unlikely(gen_code_size != 0)) { - goto error_return; - } - - tcg_func_start(tcg_ctx); - - tcg_ctx->cpu = env_cpu(env); - gen_intermediate_code(cpu, tb, max_insns, pc, host_pc); - assert(tb->size != 0); - tcg_ctx->cpu = NULL; - max_insns = tb->icount; - trace_translate_block(tb, pc, tb->tc.ptr); - /* generate machine code */ - tb->jmp_reset_offset[0] = TB_JMP_RESET_OFFSET_INVALID; - tb->jmp_reset_offset[1] = TB_JMP_RESET_OFFSET_INVALID; - tcg_ctx->tb_jmp_reset_offset = tb->jmp_reset_offset; - if (TCG_TARGET_HAS_direct_jump) { - tcg_ctx->tb_jmp_insn_offset = tb->jmp_target_arg; - tcg_ctx->tb_jmp_target_addr = NULL; - } else { - tcg_ctx->tb_jmp_insn_offset = NULL; - tcg_ctx->tb_jmp_target_addr = tb->jmp_target_arg; - } - -#ifdef CONFIG_PROFILER - qatomic_set(&prof->tb_count, prof->tb_count + 1); - qatomic_set(&prof->interm_time, - prof->interm_time + profile_getclock() - ti); - ti = profile_getclock(); -#endif - - gen_code_size = tcg_gen_code(tcg_ctx, tb, pc); + gen_code_size = setjmp_gen_code(env, tb, pc, host_pc, &max_insns, &ti); if (unlikely(gen_code_size < 0)) { - error_return: switch (gen_code_size) { case -1: /* @@ -4228,6 +4228,18 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb, target_ulong pc_start) } #endif + /* Initialize goto_tb jump offsets. */ + tb->jmp_reset_offset[0] = TB_JMP_RESET_OFFSET_INVALID; + tb->jmp_reset_offset[1] = TB_JMP_RESET_OFFSET_INVALID; + tcg_ctx->tb_jmp_reset_offset = tb->jmp_reset_offset; + if (TCG_TARGET_HAS_direct_jump) { + tcg_ctx->tb_jmp_insn_offset = tb->jmp_target_arg; + tcg_ctx->tb_jmp_target_addr = NULL; + } else { + tcg_ctx->tb_jmp_insn_offset = NULL; + tcg_ctx->tb_jmp_target_addr = tb->jmp_target_arg; + } + tcg_reg_alloc_start(s); /* |