qemu/0321-target-mips-fix-wrong-microMIPS-opcode-encoding.patch
Cole Robinson 9290838132 Fix boot hang if console is not connected (bz #894451)
Fix segfault with zero length virtio-scsi disk (bz #847549)
2013-02-02 15:47:37 -05:00

36 lines
1.2 KiB
Diff

From 7575e5a249f1bc38ee9498f2663771b1ccd7702e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=B3=E9=9F=8B=E4=BB=BB=20=28Wei-Ren=20Chen=29?=
<chenwj@iis.sinica.edu.tw>
Date: Wed, 14 Nov 2012 10:49:55 +0800
Subject: [PATCH] target-mips: fix wrong microMIPS opcode encoding
While reading microMIPS decoding, I found a possible wrong opcode
encoding. According to [1] page 166, the bits 13..12 for MULTU is
0x01 rather than 0x00. Please review, thanks.
[1] MIPS Architecture for Programmers VolumeIV-e: The MIPS DSP
Application-Specific Extension to the microMIPS32 Architecture
Signed-off-by: Chen Wei-Ren <chenwj@iis.sinica.edu.tw>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
(cherry picked from commit 6801038bc52d61f81ac8a25fbe392f1bad982887)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
target-mips/translate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 4e04e97..49907bb 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -9486,7 +9486,7 @@ enum {
/* bits 13..12 for 0x32 */
MULT_ACC = 0x0,
- MULTU_ACC = 0x0,
+ MULTU_ACC = 0x1,
/* bits 15..12 for 0x2c */
SEB = 0x2,