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/*
* Copyright (C) 2017, Emilio G. Cota <cota@braap.org>
*
* License: GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef EXEC_TB_LOOKUP_H
#define EXEC_TB_LOOKUP_H
#include "qemu/osdep.h"
#ifdef NEED_CPU_H
#include "cpu.h"
#else
#include "exec/poison.h"
#endif
#include "exec/exec-all.h"
#include "exec/tb-hash.h"
/* Might cause an exception, so have a longjmp destination ready */
static inline TranslationBlock *
tb_lookup__cpu_state(CPUState *cpu, target_ulong *pc, target_ulong *cs_base,
uint32_t *flags)
{
CPUArchState *env = (CPUArchState *)cpu->env_ptr;
TranslationBlock *tb;
uint32_t hash;
cpu_get_tb_cpu_state(env, pc, cs_base, flags);
hash = tb_jmp_cache_hash_func(*pc);
tb = atomic_rcu_read(&cpu->tb_jmp_cache[hash]);
if (likely(tb &&
tb->pc == *pc &&
tb->cs_base == *cs_base &&
tb->flags == *flags &&
tb->trace_vcpu_dstate == *cpu->trace_dstate &&
!(atomic_read(&tb->cflags) & CF_INVALID))) {
return tb;
}
tb = tb_htable_lookup(cpu, *pc, *cs_base, *flags);
if (tb == NULL) {
return NULL;
}
atomic_set(&cpu->tb_jmp_cache[hash], tb);
return tb;
}
#endif /* EXEC_TB_LOOKUP_H */
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