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| author |   Wang Nan <wangnan0@huawei.com> | 2015-01-05 19:34:47 +0800 |
|---|---|---|
| committer |   Jon Medhurst <tixy@linaro.org> | 2015-01-14 12:24:52 +0000 |
| commit | bfc9657d752c47d59dc0bab85ebdc19cf60100dd (patch) | |
| tree | 8fc4941e1571dd9b0d7d91703ce4ff67580984c4 /arch/arm/include/asm/probes.h | |
| parent | ARM: kprobes: check register usage for probed instruction. (diff) | |
| download | linux-dev-bfc9657d752c47d59dc0bab85ebdc19cf60100dd.tar.xz linux-dev-bfc9657d752c47d59dc0bab85ebdc19cf60100dd.zip | |
ARM: optprobes: execute instruction during restoring if possible.
This patch removes software emulation or simulation for most of probed
instructions. If the instruction doesn't use PC relative addressing,
it will be translated into following instructions in the restore code
in code template:
ldmia {r0 - r14} // restore all instruction except PC
<instruction> // direct execute the probed instruction
b next_insn // branch to next instruction.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Diffstat (limited to 'arch/arm/include/asm/probes.h')
| -rw-r--r-- | arch/arm/include/asm/probes.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/probes.h b/arch/arm/include/asm/probes.h index b668e60f759c..1e5b9bb92270 100644 --- a/arch/arm/include/asm/probes.h +++ b/arch/arm/include/asm/probes.h @@ -42,6 +42,7 @@ struct arch_probes_insn { probes_insn_fn_t *insn_fn; int stack_space; unsigned long register_usage_flags; + bool kprobe_direct_exec; }; #endif /* __ASSEMBLY__ */ |