@@ -309,6 +309,25 @@ static bool tb_cmp(const void *p, const void *d)
return false;
}
+TranslationBlock *tb_from_jmp_cache(CPUArchState *env, target_ulong vaddr)
+{
+ CPUState *cpu = ENV_GET_CPU(env);
+ TranslationBlock *tb;
+ target_ulong cs_base, pc;
+ uint32_t flags;
+
+ if (unlikely(atomic_read(&cpu->exit_request))) {
+ return NULL;
+ }
+ cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
+ tb = atomic_rcu_read(&cpu->tb_jmp_cache[tb_jmp_cache_hash_func(vaddr)]);
+ if (likely(tb && tb->pc == vaddr && tb->cs_base == cs_base &&
+ tb->flags == flags)) {
+ return tb;
+ }
+ return NULL;
+}
+
static TranslationBlock *tb_htable_lookup(CPUState *cpu,
target_ulong pc,
target_ulong cs_base,
@@ -56,7 +56,6 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
target_ulong pc, target_ulong cs_base,
uint32_t flags,
int cflags);
-
void QEMU_NORETURN cpu_loop_exit(CPUState *cpu);
void QEMU_NORETURN cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc);
void QEMU_NORETURN cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc);
@@ -368,6 +367,7 @@ struct TranslationBlock {
void tb_free(TranslationBlock *tb);
void tb_flush(CPUState *cpu);
void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr);
+TranslationBlock *tb_from_jmp_cache(CPUArchState *env, target_ulong vaddr);
#if defined(USE_DIRECT_JUMP)
This paves the way for upcoming changes. Signed-off-by: Emilio G. Cota <cota@braap.org> --- cpu-exec.c | 19 +++++++++++++++++++ include/exec/exec-all.h | 2 +- 2 files changed, 20 insertions(+), 1 deletion(-)