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