* [Qemu-devel] [4991] Fix I/D MMU tag reads
@ 2008-08-06 18:16 Blue Swirl
0 siblings, 0 replies; only message in thread
From: Blue Swirl @ 2008-08-06 18:16 UTC (permalink / raw)
To: qemu-devel
Revision: 4991
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4991
Author: blueswir1
Date: 2008-08-06 18:16:08 +0000 (Wed, 06 Aug 2008)
Log Message:
-----------
Fix I/D MMU tag reads
Modified Paths:
--------------
trunk/target-sparc/op_helper.c
Modified: trunk/target-sparc/op_helper.c
===================================================================
--- trunk/target-sparc/op_helper.c 2008-08-06 18:13:54 UTC (rev 4990)
+++ trunk/target-sparc/op_helper.c 2008-08-06 18:16:08 UTC (rev 4991)
@@ -1674,34 +1674,9 @@
}
case 0x56: // I-MMU tag read
{
- unsigned int i;
+ int reg = (addr >> 3) & 0x3f;
- for (i = 0; i < 64; i++) {
- // Valid, ctx match, vaddr match
- if ((env->itlb_tte[i] & 0x8000000000000000ULL) != 0) {
- uint64_t mask;
-
- switch ((env->itlb_tte[i] >> 61) & 3) {
- default:
- case 0x0:
- mask = 0xffffffffffffffff;
- break;
- case 0x1:
- mask = 0xffffffffffff0fff;
- break;
- case 0x2:
- mask = 0xfffffffffff80fff;
- break;
- case 0x3:
- mask = 0xffffffffffc00fff;
- break;
- }
- if ((env->itlb_tag[i] & mask) == (addr & mask)) {
- ret = env->itlb_tte[i];
- break;
- }
- }
- }
+ ret = env->itlb_tag[reg];
break;
}
case 0x58: // D-MMU regs
@@ -1720,34 +1695,9 @@
}
case 0x5e: // D-MMU tag read
{
- unsigned int i;
+ int reg = (addr >> 3) & 0x3f;
- for (i = 0; i < 64; i++) {
- // Valid, ctx match, vaddr match
- if ((env->dtlb_tte[i] & 0x8000000000000000ULL) != 0) {
- uint64_t mask;
-
- switch ((env->dtlb_tte[i] >> 61) & 3) {
- default:
- case 0x0:
- mask = 0xffffffffffffffff;
- break;
- case 0x1:
- mask = 0xffffffffffff0fff;
- break;
- case 0x2:
- mask = 0xfffffffffff80fff;
- break;
- case 0x3:
- mask = 0xffffffffffc00fff;
- break;
- }
- if ((env->dtlb_tag[i] & mask) == (addr & mask)) {
- ret = env->dtlb_tte[i];
- break;
- }
- }
- }
+ ret = env->dtlb_tag[reg];
break;
}
case 0x46: // D-cache data
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