diff options
Diffstat (limited to 'cpu-exec.c')
| -rw-r--r-- | cpu-exec.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index a8e67e8add..3a1ff4e077 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -44,7 +44,6 @@ #endif int tb_invalidated_flag; -static unsigned long next_tb; //#define DEBUG_EXEC //#define DEBUG_SIGNAL @@ -93,8 +92,6 @@ static TranslationBlock *tb_find_slow(target_ulong pc, target_ulong phys_pc, phys_page1, phys_page2, virt_page2; uint8_t *tc_ptr; - spin_lock(&tb_lock); - tb_invalidated_flag = 0; regs_to_env(); /* XXX: do it just before cpu_gen_code() */ @@ -155,7 +152,6 @@ static TranslationBlock *tb_find_slow(target_ulong pc, found: /* we add the TB in the virtual pc hash table */ env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; - spin_unlock(&tb_lock); return tb; } @@ -228,14 +224,6 @@ static inline TranslationBlock *tb_find_fast(void) if (__builtin_expect(!tb || tb->pc != pc || tb->cs_base != cs_base || tb->flags != flags, 0)) { tb = tb_find_slow(pc, cs_base, flags); - /* Note: we do it here to avoid a gcc bug on Mac OS X when - doing it in tb_find_slow */ - if (tb_invalidated_flag) { - /* as some TB could have been invalidated because - of memory exceptions while generating the code, we - must recompute the hash index here */ - next_tb = 0; - } } return tb; } @@ -249,6 +237,7 @@ int cpu_exec(CPUState *env1) int ret, interrupt_request; TranslationBlock *tb; uint8_t *tc_ptr; + unsigned long next_tb; if (cpu_halted(env1) == EXCP_HALTED) return EXCP_HALTED; @@ -577,7 +566,16 @@ int cpu_exec(CPUState *env1) #endif } #endif + spin_lock(&tb_lock); tb = tb_find_fast(); + /* Note: we do it here to avoid a gcc bug on Mac OS X when + doing it in tb_find_slow */ + if (tb_invalidated_flag) { + /* as some TB could have been invalidated because + of memory exceptions while generating the code, we + must recompute the hash index here */ + next_tb = 0; + } #ifdef DEBUG_EXEC if ((loglevel & CPU_LOG_EXEC)) { fprintf(logfile, "Trace 0x%08lx [" TARGET_FMT_lx "] %s\n", @@ -594,11 +592,10 @@ int cpu_exec(CPUState *env1) (env->kqemu_enabled != 2) && #endif tb->page_addr[1] == -1) { - spin_lock(&tb_lock); tb_add_jump((TranslationBlock *)(next_tb & ~3), next_tb & 3, tb); - spin_unlock(&tb_lock); } } + spin_unlock(&tb_lock); tc_ptr = tb->tc_ptr; env->current_tb = tb; /* execute the generated code */ |