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[v2] target-mips: fix CP0.BadVAddr by stopping translation on Address Error

Message ID 1426524882-19151-1-git-send-email-leon.alrae@imgtec.com
State New
Headers show

Commit Message

Leon Alrae March 16, 2015, 4:54 p.m. UTC 
CP0.BadVAddr is supposed to capture the most recent virtual address that caused
the exception. Currently this does not work correctly for unaligned instruction
fetch as translation is not stopped and CP0.BadVAddr is updated with subsequent
addresses.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
---
v2:
* description update - make it clear that it is about instr. fetch (Maciej)
---
 target-mips/translate.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/target-mips/translate.c b/target-mips/translate.c
index 9059bfd..0e2443a 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -18438,6 +18438,7 @@  static void decode_opc(CPUMIPSState *env, DisasContext *ctx)
     if (ctx->pc & 0x3) {
         env->CP0_BadVAddr = ctx->pc;
         generate_exception_err(ctx, EXCP_AdEL, EXCP_INST_NOTAVAIL);
+        ctx->bstate = BS_STOP;
         return;
     }