From a64d4718f1afde08fb74910242e7a7b946c3f162 Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 5 Dec 2005 19:57:57 +0000
Subject: [PATCH] MIPS unaligned accesses exceptions (Daniel Jacobowitz)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1688 c046a42c-6fe2-441c-8c8c-71466251a162
---
softmmu_template.h | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/softmmu_template.h b/softmmu_template.h
index c14407d3f3..9bae4f6282 100644
--- a/softmmu_template.h
+++ b/softmmu_template.h
@@ -97,15 +97,28 @@ DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
/* slow unaligned access (it spans two pages or IO) */
do_unaligned_access:
retaddr = GETPC();
+#ifdef ALIGNED_ONLY
+ do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr);
+#endif
res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr,
is_user, retaddr);
} else {
- /* unaligned access in the same page */
+ /* unaligned/aligned access in the same page */
+#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0) {
+ retaddr = GETPC();
+ do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr);
+ }
+#endif
res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)physaddr);
}
} else {
/* the page is not in the TLB : fill it */
retaddr = GETPC();
+#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0)
+ do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr);
+#endif
tlb_fill(addr, READ_ACCESS_TYPE, is_user, retaddr);
goto redo;
}
@@ -213,15 +226,28 @@ void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr,
} else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
do_unaligned_access:
retaddr = GETPC();
+#ifdef ALIGNED_ONLY
+ do_unaligned_access(addr, 1, is_user, retaddr);
+#endif
glue(glue(slow_st, SUFFIX), MMUSUFFIX)(addr, val,
is_user, retaddr);
} else {
/* aligned/unaligned access in the same page */
+#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0) {
+ retaddr = GETPC();
+ do_unaligned_access(addr, 1, is_user, retaddr);
+ }
+#endif
glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)physaddr, val);
}
} else {
/* the page is not in the TLB : fill it */
retaddr = GETPC();
+#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0)
+ do_unaligned_access(addr, 1, is_user, retaddr);
+#endif
tlb_fill(addr, 1, is_user, retaddr);
goto redo;
}