bf253ac606
We don't really deal in cf_mask most of the time. The one time it's relevant is when we want to remove an invalidated TB from the QHT lookup. Everywhere else we should be looking up things without CF_INVALID set. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210224165811.11567-4-alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
|
|
* 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
|
|
|
|
#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(CPUState *cpu, target_ulong pc,
|
|
target_ulong cs_base,
|
|
uint32_t flags, uint32_t cflags)
|
|
{
|
|
TranslationBlock *tb;
|
|
uint32_t hash;
|
|
|
|
/* we should never be trying to look up an INVALID tb */
|
|
tcg_debug_assert(!(cflags & CF_INVALID));
|
|
|
|
hash = tb_jmp_cache_hash_func(pc);
|
|
tb = qatomic_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 &&
|
|
tb_cflags(tb) == cflags)) {
|
|
return tb;
|
|
}
|
|
tb = tb_htable_lookup(cpu, pc, cs_base, flags, cflags);
|
|
if (tb == NULL) {
|
|
return NULL;
|
|
}
|
|
qatomic_set(&cpu->tb_jmp_cache[hash], tb);
|
|
return tb;
|
|
}
|
|
|
|
#endif /* EXEC_TB_LOOKUP_H */
|