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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2005-04-10 14:40:58 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2005-04-10 14:40:58 +0000
commitd39c0b990a243fba280eb4222daf685491431a5b (patch)
tree7549160a27d7a9e9a00383423d4c3778a005bfc1 /target-sparc
parent2b03a7a5bc4b23d912e0d8d23c8486ac8eec8a1d (diff)
downloadqemu-d39c0b990a243fba280eb4222daf685491431a5b.zip
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fixed MMU bug on code page boundary
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1362 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-sparc')
-rw-r--r--target-sparc/translate.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index 543ed92..f93c3b1 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -1395,24 +1395,24 @@ static void disas_sparc_insn(DisasContext * dc)
if (!supervisor(dc))
goto priv_insn;
gen_op_sta(insn, 0, 4, 0);
- break;
+ break;
case 0x15:
if (!supervisor(dc))
goto priv_insn;
gen_op_stba(insn, 0, 1, 0);
- break;
+ break;
case 0x16:
if (!supervisor(dc))
goto priv_insn;
gen_op_stha(insn, 0, 2, 0);
- break;
+ break;
case 0x17:
if (!supervisor(dc))
goto priv_insn;
flush_T2(dc);
gen_movl_reg_T2(rd + 1);
gen_op_stda(insn, 0, 8, 0);
- break;
+ break;
#endif
default:
case 0x0e: /* V9 stx */
@@ -1545,6 +1545,10 @@ static inline int gen_intermediate_code_internal(TranslationBlock * tb,
/* if the next PC is different, we abort now */
if (dc->pc != (last_pc + 4))
break;
+ /* if we reach a page boundary, we stop generation so that the
+ PC of a TT_TFAULT exception is always in the right page */
+ if ((dc->pc & (TARGET_PAGE_SIZE - 1)) == 0)
+ break;
/* if single step mode, we generate only one instruction and
generate an exception */
if (env->singlestep_enabled) {