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ARM: kprobes: Fix emulation of Data-processing (immediate) instructions
author
Jon Medhurst
<tixy@yxit.co.uk>
Wed, 6 Apr 2011 10:17:12 +0000
(11:17 +0100)
committer
Nicolas Pitre
<nicolas.pitre@linaro.org>
Fri, 29 Apr 2011 03:40:55 +0000
(23:40 -0400)
Emulation of instructions like "ADD rd, rn, #<const>" would result in a
corrupted value for rd.
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
arch/arm/kernel/kprobes-decode.c
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diff --git
a/arch/arm/kernel/kprobes-decode.c
b/arch/arm/kernel/kprobes-decode.c
index
ee29d33
..
baf053e
100644
(file)
--- a/
arch/arm/kernel/kprobes-decode.c
+++ b/
arch/arm/kernel/kprobes-decode.c
@@
-1207,7
+1207,7
@@
space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi)
* *S (bit 20) updates condition codes
* ADC/SBC/RSC reads the C flag
*/
- insn &= 0xfff
f0fff; /*
Rd = r0 */
+ insn &= 0xfff
00fff; /* Rn = r0 and
Rd = r0 */
asi->insn[0] = insn;
if ((insn & 0x0f900000) == 0x03100000) {