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34 lines
873 B
C
34 lines
873 B
C
/*
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* The per-CPU TranslationBlock jump cache.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef ACCEL_TCG_TB_JMP_CACHE_H
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#define ACCEL_TCG_TB_JMP_CACHE_H
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#include "qemu/rcu.h"
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#include "exec/cpu-common.h"
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#define TB_JMP_CACHE_BITS 12
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#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
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/*
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* Invalidated in parallel; all accesses to 'tb' must be atomic.
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* A valid entry is read/written by a single CPU, therefore there is
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* no need for qatomic_rcu_read() and pc is always consistent with a
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* non-NULL value of 'tb'. Strictly speaking pc is only needed for
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* CF_PCREL, but it's used always for simplicity.
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*/
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typedef struct CPUJumpCache {
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struct rcu_head rcu;
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struct {
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TranslationBlock *tb;
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vaddr pc;
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} array[TB_JMP_CACHE_SIZE];
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} CPUJumpCache;
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#endif /* ACCEL_TCG_TB_JMP_CACHE_H */
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