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| author | Jon Medhurst <tixy@yxit.co.uk> | 2011-07-06 20:33:41 +0100 |
|---|---|---|
| committer | Tixy <tixy@medhuaa1.miniserver.com> | 2011-07-13 17:32:41 +0000 |
| commit | 1b59d874660be7f790861ad849858cc009089515 (patch) | |
| tree | 250d4d0945dc5aab95e4f32393d6fd562c327522 /arch/arm/kernel/kprobes.h | |
| parent | 0ab4c02ddae2e1d32d686a7773608f6c44fb2a83 (diff) | |
ARM: kprobes: Move is_writeback define to header file.
This will be used later in other files.
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch/arm/kernel/kprobes.h')
| -rw-r--r-- | arch/arm/kernel/kprobes.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h index 792f2316227..4de2f37b1a8 100644 --- a/arch/arm/kernel/kprobes.h +++ b/arch/arm/kernel/kprobes.h @@ -36,4 +36,10 @@ void __init arm_kprobe_decode_init(void); extern kprobe_check_cc * const kprobe_condition_checks[16]; +/* + * Test if load/store instructions writeback the address register. + * if P (bit 24) == 0 or W (bit 21) == 1 + */ +#define is_writeback(insn) ((insn ^ 0x01000000) & 0x01200000) + #endif /* _ARM_KERNEL_KPROBES_H */ |