motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 01:33:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

accel/tcg: Replace TARGET_TB_PCREL with CF_PCREL

Browse source 
Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-5-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Anton Johansson 2023-02-27 14:51:39 +01:00 • committed by Richard Henderson
parent e607ea39ef
commit 4be790263f
6 changed files with 44 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

48
accel/tcg/tb-jmp-cache.h
View file

@ -14,53 +14,51 @@
/*
* Accessed in parallel; all accesses to 'tb' must be atomic.
* For TARGET_TB_PCREL, accesses to 'pc' must be protected by
* a load_acquire/store_release to 'tb'.
* For CF_PCREL, accesses to 'pc' must be protected by a
* load_acquire/store_release to 'tb'.
*/
struct CPUJumpCache {
struct rcu_head rcu;
struct {
TranslationBlock *tb;
#if TARGET_TB_PCREL
target_ulong pc;
#endif
} array[TB_JMP_CACHE_SIZE];
};
static inline TranslationBlock *
tb_jmp_cache_get_tb(CPUJumpCache *jc, uint32_t hash)
tb_jmp_cache_get_tb(CPUJumpCache *jc, uint32_t cflags, uint32_t hash)
{
#if TARGET_TB_PCREL
/* Use acquire to ensure current load of pc from jc. */
return qatomic_load_acquire(&jc->array[hash].tb);
#else
/* Use rcu_read to ensure current load of pc from *tb. */
return qatomic_rcu_read(&jc->array[hash].tb);
#endif
if (cflags & CF_PCREL) {
/* Use acquire to ensure current load of pc from jc. */
return qatomic_load_acquire(&jc->array[hash].tb);
} else {
/* Use rcu_read to ensure current load of pc from *tb. */
return qatomic_rcu_read(&jc->array[hash].tb);
}
}
static inline target_ulong
tb_jmp_cache_get_pc(CPUJumpCache *jc, uint32_t hash, TranslationBlock *tb)
{
#if TARGET_TB_PCREL
return jc->array[hash].pc;
#else
return tb_pc(tb);
#endif
if (tb_cflags(tb) & CF_PCREL) {
return jc->array[hash].pc;
} else {
return tb_pc(tb);
}
}
static inline void
tb_jmp_cache_set(CPUJumpCache *jc, uint32_t hash,
TranslationBlock *tb, target_ulong pc)
{
#if TARGET_TB_PCREL
jc->array[hash].pc = pc;
/* Use store_release on tb to ensure pc is written first. */
qatomic_store_release(&jc->array[hash].tb, tb);
#else
/* Use the pc value already stored in tb->pc. */
qatomic_set(&jc->array[hash].tb, tb);
#endif
if (tb_cflags(tb) & CF_PCREL) {
jc->array[hash].pc = pc;
/* Use store_release on tb to ensure pc is written first. */
qatomic_store_release(&jc->array[hash].tb, tb);
} else{
/* Use the pc value already stored in tb->pc. */
qatomic_set(&jc->array[hash].tb, tb);
}
}
#endif /* ACCEL_TCG_TB_JMP_CACHE_H */