From 1b59d874660be7f790861ad849858cc009089515 Mon Sep 17 00:00:00 2001 From: Jon Medhurst Date: Wed, 6 Jul 2011 20:33:41 +0100 Subject: ARM: kprobes: Move is_writeback define to header file. This will be used later in other files. Signed-off-by: Jon Medhurst Acked-by: Nicolas Pitre --- arch/arm/kernel/kprobes.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/kernel/kprobes.h') diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h index 792f231..4de2f37 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 */ -- cgit v1.1