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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-07-15 10:06:42 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-07-15 10:06:42 +0100 |
| commit | 4aa96ccf9ee35cdbd0d423e87a4d551019570218 (patch) | |
| tree | dca6322681df2e8f33f65c07defce24db68f645c /arch/arm/kernel/traps.c | |
| parent | cb5fd904f0f14866ab76ec1f6ca3469896e4e2cf (diff) | |
| parent | 8f2ffa00fb3c05ec0659cd7b056c4e8e106072f1 (diff) | |
Merge branch 'kprobes-thumb' of git://git.yxit.co.uk/linux into devel-stable
Diffstat (limited to 'arch/arm/kernel/traps.c')
| -rw-r--r-- | arch/arm/kernel/traps.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 6807cb1e76d..2d3436e9f71 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -355,9 +355,24 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) pc = (void __user *)instruction_pointer(regs); if (processor_mode(regs) == SVC_MODE) { - instr = *(u32 *) pc; +#ifdef CONFIG_THUMB2_KERNEL + if (thumb_mode(regs)) { + instr = ((u16 *)pc)[0]; + if (is_wide_instruction(instr)) { + instr <<= 16; + instr |= ((u16 *)pc)[1]; + } + } else +#endif + instr = *(u32 *) pc; } else if (thumb_mode(regs)) { get_user(instr, (u16 __user *)pc); + if (is_wide_instruction(instr)) { + unsigned int instr2; + get_user(instr2, (u16 __user *)pc+1); + instr <<= 16; + instr |= instr2; + } } else { get_user(instr, (u32 __user *)pc); } |