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Make sure we flush cached blocks from the tb-jmp-cache when we replace valid tlb entries. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4352 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
edgar_igl 2008-05-06 08:44:21 +00:00
parent b5e19d4ce7
commit 5c751e99c3
1 changed files with 20 additions and 8 deletions
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28
exec.c
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@ -1366,6 +1366,21 @@ CPUState *cpu_copy(CPUState *env)
#if !defined(CONFIG_USER_ONLY)
static inline void tlb_flush_jmp_cache(CPUState *env, target_ulong addr)
{
unsigned int i;
/* Discard jump cache entries for any tb which might potentially
overlap the flushed page. */
i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE);
memset (&env->tb_jmp_cache[i], 0,
TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
i = tb_jmp_cache_hash_page(addr);
memset (&env->tb_jmp_cache[i], 0,
TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
}
/* NOTE: if flush_global is true, also flush global entries (not
implemented yet) */
void tlb_flush(CPUState *env, int flush_global)
@ -1428,7 +1443,6 @@ static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr)
void tlb_flush_page(CPUState *env, target_ulong addr)
{
int i;
TranslationBlock *tb;
#if defined(DEBUG_TLB)
printf("tlb_flush_page: " TARGET_FMT_lx "\n", addr);
@ -1448,13 +1462,7 @@ void tlb_flush_page(CPUState *env, target_ulong addr)
#endif
#endif
/* Discard jump cache entries for any tb which might potentially
overlap the flushed page. */
i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE);
memset (&env->tb_jmp_cache[i], 0, TB_JMP_PAGE_SIZE * sizeof(tb));
i = tb_jmp_cache_hash_page(addr);
memset (&env->tb_jmp_cache[i], 0, TB_JMP_PAGE_SIZE * sizeof(tb));
tlb_flush_jmp_cache(env, addr);
#if !defined(CONFIG_SOFTMMU)
if (addr < MMAP_AREA_END)
@ -1706,6 +1714,10 @@ int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
} else {
te->addr_read = -1;
}
if (te->addr_code != -1) {
tlb_flush_jmp_cache(env, te->addr_code);
}
if (prot & PAGE_EXEC) {
te->addr_code = address;
} else {