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authorpbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162>2006-03-11 16:39:23 +0000
committerpbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162>2006-03-11 16:39:23 +0000
commit09c56b842ee3a1e5efbf98540408cdcafe451ab0 (patch)
tree3bae53212f43f37da4b69d3e212cb11a3bf6168b /target-mips
parentecd78a0ac7a7f5f37638a1847391206bb04c48e1 (diff)
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Avoid flushing of global TLB entries for differing ASIDs (Thiemo Seufer).
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1778 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-mips')
-rw-r--r--target-mips/op_helper.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index b1a308e..9066ce7 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -625,13 +625,14 @@ void do_tlbp (void)
void do_tlbr (void)
{
tlb_t *tlb;
+ uint8_t ASID;
int size;
+ ASID = env->CP0_EntryHi & 0xFF;
tlb = &env->tlb[env->CP0_index & (MIPS_TLB_NB - 1)];
/* If this will change the current ASID, flush qemu's TLB. */
- /* FIXME: Could avoid flushing things which match global entries... */
- if ((env->CP0_EntryHi & 0xFF) != tlb->ASID)
+ if (ASID != tlb->ASID && tlb->G != 1)
tlb_flush (env, 1);
env->CP0_EntryHi = tlb->VPN | tlb->ASID;