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workaround for gcc bug on PowerPC

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1726 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-12-19 01:42:32 +00:00
parent 6a36d84e10
commit 1538800276
1 changed files with 9 additions and 7 deletions
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16
cpu-exec.c
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@ -126,7 +126,7 @@ static TranslationBlock *tb_find_slow(target_ulong pc,
/* cannot fail at this point */ /* cannot fail at this point */
tb = tb_alloc(pc); tb = tb_alloc(pc);
/* don't forget to invalidate previous TB info */ /* don't forget to invalidate previous TB info */
T0 = 0; tb_invalidated_flag = 1;
} }
tc_ptr = code_gen_ptr; tc_ptr = code_gen_ptr;
tb->tc_ptr = tc_ptr; tb->tc_ptr = tc_ptr;
@ -144,12 +144,6 @@ static TranslationBlock *tb_find_slow(target_ulong pc,
tb_link_phys(tb, phys_pc, phys_page2); tb_link_phys(tb, phys_pc, phys_page2);
found: found:
if (tb_invalidated_flag) {
/* as some TB could have been invalidated because
of memory exceptions while generating the code, we
must recompute the hash index here */
T0 = 0;
}
/* we add the TB in the virtual pc hash table */ /* we add the TB in the virtual pc hash table */
env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
spin_unlock(&tb_lock); spin_unlock(&tb_lock);
@ -201,6 +195,14 @@ static inline TranslationBlock *tb_find_fast(void)
if (__builtin_expect(!tb || tb->pc != pc || tb->cs_base != cs_base || if (__builtin_expect(!tb || tb->pc != pc || tb->cs_base != cs_base ||
tb->flags != flags, 0)) { tb->flags != flags, 0)) {
tb = tb_find_slow(pc, cs_base, flags); tb = tb_find_slow(pc, cs_base, flags);
/* Note: we do it here to avoid a gcc bug on Mac OS X when
doing it in tb_find_slow */
if (tb_invalidated_flag) {
/* as some TB could have been invalidated because
of memory exceptions while generating the code, we
must recompute the hash index here */
T0 = 0;
}
} }
return tb; return tb;
} }