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authorSebastian Macke <sebastian@macke.de>2013-10-22 02:12:42 +0200
committerJia Liu <proljc@gmail.com>2013-11-20 21:47:17 +0800
commit93147a180c10b97bf9575a87e01c9a1c93e6c9ce (patch)
treee93cc5d14e881ccee682650ce23e2d08b2f69161 /target-openrisc
parentd51552176a2ab5e80a211514aa1339fe2575ec2a (diff)
target-openrisc: Correct memory bounds checking for the tlb buffers
The mtspr and mfspr routines didn't check for the correct memory boundaries. This fixes a segmentation fault while booting Linux. Signed-off-by: Sebastian Macke <sebastian@macke.de> Reviewed-by: Jia Liu <proljc@gmail.com> Signed-off-by: Jia Liu <proljc@gmail.com>
Diffstat (limited to 'target-openrisc')
-rw-r--r--target-openrisc/sys_helper.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/target-openrisc/sys_helper.c b/target-openrisc/sys_helper.c
index f1165885d9..be06c4565b 100644
--- a/target-openrisc/sys_helper.c
+++ b/target-openrisc/sys_helper.c
@@ -81,7 +81,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env,
case TO_SPR(0, 64): /* ESR */
env->esr = rb;
break;
- case TO_SPR(1, 512) ... TO_SPR(1, 639): /* DTLBW0MR 0-127 */
+ case TO_SPR(1, 512) ... TO_SPR(1, 512+DTLB_SIZE-1): /* DTLBW0MR 0-127 */
idx = spr - TO_SPR(1, 512);
if (!(rb & 1)) {
tlb_flush_page(env, env->tlb->dtlb[0][idx].mr & TARGET_PAGE_MASK);
@@ -89,7 +89,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env,
env->tlb->dtlb[0][idx].mr = rb;
break;
- case TO_SPR(1, 640) ... TO_SPR(1, 767): /* DTLBW0TR 0-127 */
+ case TO_SPR(1, 640) ... TO_SPR(1, 640+DTLB_SIZE-1): /* DTLBW0TR 0-127 */
idx = spr - TO_SPR(1, 640);
env->tlb->dtlb[0][idx].tr = rb;
break;
@@ -100,7 +100,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env,
case TO_SPR(1, 1280) ... TO_SPR(1, 1407): /* DTLBW3MR 0-127 */
case TO_SPR(1, 1408) ... TO_SPR(1, 1535): /* DTLBW3TR 0-127 */
break;
- case TO_SPR(2, 512) ... TO_SPR(2, 639): /* ITLBW0MR 0-127 */
+ case TO_SPR(2, 512) ... TO_SPR(2, 512+ITLB_SIZE-1): /* ITLBW0MR 0-127 */
idx = spr - TO_SPR(2, 512);
if (!(rb & 1)) {
tlb_flush_page(env, env->tlb->itlb[0][idx].mr & TARGET_PAGE_MASK);
@@ -108,7 +108,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env,
env->tlb->itlb[0][idx].mr = rb;
break;
- case TO_SPR(2, 640) ... TO_SPR(2, 767): /* ITLBW0TR 0-127 */
+ case TO_SPR(2, 640) ... TO_SPR(2, 640+ITLB_SIZE-1): /* ITLBW0TR 0-127 */
idx = spr - TO_SPR(2, 640);
env->tlb->itlb[0][idx].tr = rb;
break;
@@ -212,11 +212,11 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env,
case TO_SPR(0, 64): /* ESR */
return env->esr;
- case TO_SPR(1, 512) ... TO_SPR(1, 639): /* DTLBW0MR 0-127 */
+ case TO_SPR(1, 512) ... TO_SPR(1, 512+DTLB_SIZE-1): /* DTLBW0MR 0-127 */
idx = spr - TO_SPR(1, 512);
return env->tlb->dtlb[0][idx].mr;
- case TO_SPR(1, 640) ... TO_SPR(1, 767): /* DTLBW0TR 0-127 */
+ case TO_SPR(1, 640) ... TO_SPR(1, 640+DTLB_SIZE-1): /* DTLBW0TR 0-127 */
idx = spr - TO_SPR(1, 640);
return env->tlb->dtlb[0][idx].tr;
@@ -228,11 +228,11 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env,
case TO_SPR(1, 1408) ... TO_SPR(1, 1535): /* DTLBW3TR 0-127 */
break;
- case TO_SPR(2, 512) ... TO_SPR(2, 639): /* ITLBW0MR 0-127 */
+ case TO_SPR(2, 512) ... TO_SPR(2, 512+ITLB_SIZE-1): /* ITLBW0MR 0-127 */
idx = spr - TO_SPR(2, 512);
return env->tlb->itlb[0][idx].mr;
- case TO_SPR(2, 640) ... TO_SPR(2, 767): /* ITLBW0TR 0-127 */
+ case TO_SPR(2, 640) ... TO_SPR(2, 640+ITLB_SIZE-1): /* ITLBW0TR 0-127 */
idx = spr - TO_SPR(2, 640);
return env->tlb->itlb[0][idx].tr;