84f1c148da
This gets rid of a hole in struct TranslationBlock. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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* Copyright (C) 2017, Emilio G. Cota <cota@braap.org>
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*
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* License: GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef EXEC_TB_LOOKUP_H
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#define EXEC_TB_LOOKUP_H
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#include "qemu/osdep.h"
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#ifdef NEED_CPU_H
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#include "cpu.h"
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#else
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#include "exec/poison.h"
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#endif
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#include "exec/exec-all.h"
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#include "exec/tb-hash.h"
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/* Might cause an exception, so have a longjmp destination ready */
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static inline TranslationBlock *
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tb_lookup__cpu_state(CPUState *cpu, target_ulong *pc, target_ulong *cs_base,
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uint32_t *flags)
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{
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CPUArchState *env = (CPUArchState *)cpu->env_ptr;
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TranslationBlock *tb;
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uint32_t hash;
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cpu_get_tb_cpu_state(env, pc, cs_base, flags);
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hash = tb_jmp_cache_hash_func(*pc);
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tb = atomic_rcu_read(&cpu->tb_jmp_cache[hash]);
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if (likely(tb &&
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tb->pc == *pc &&
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tb->cs_base == *cs_base &&
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tb->flags == *flags &&
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tb->trace_vcpu_dstate == *cpu->trace_dstate &&
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!(atomic_read(&tb->cflags) & CF_INVALID))) {
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return tb;
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}
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tb = tb_htable_lookup(cpu, *pc, *cs_base, *flags);
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if (tb == NULL) {
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return NULL;
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}
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atomic_set(&cpu->tb_jmp_cache[hash], tb);
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return tb;
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}
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#endif /* EXEC_TB_LOOKUP_H */
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