diff options
| author | Masami Hiramatsu <mhiramat@redhat.com> | 2008-01-30 13:31:21 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:21 +0100 |
| commit | aa470140e86e45723cf8387292edbce9106ddc1f (patch) | |
| tree | 4fed04db688672f3c1094eee8aea894b90b21667 /include | |
| parent | 314cdbefd1fd0a7acf3780e9628465b77ea6a836 (diff) | |
x86: kprobe-booster for x86-64
This patch adds kprobe-booster to kprobes_64.c.
- Changes are based on x86-32.
- Add REX prefix checking code.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/kprobes_64.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-x86/kprobes_64.h b/include/asm-x86/kprobes_64.h index 8c919d35cdd..e7e921dac7c 100644 --- a/include/asm-x86/kprobes_64.h +++ b/include/asm-x86/kprobes_64.h @@ -34,6 +34,7 @@ struct kprobe; typedef u8 kprobe_opcode_t; #define BREAKPOINT_INSTRUCTION 0xcc +#define RELATIVEJUMP_INSTRUCTION 0xe9 #define MAX_INSN_SIZE 15 #define MAX_STACK_SIZE 64 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \ @@ -52,6 +53,15 @@ extern void arch_remove_kprobe(struct kprobe *p); struct arch_specific_insn { /* copy of the original instruction */ kprobe_opcode_t *insn; + /* + * boostable = -1: This instruction type is not boostable. + * boostable = 0: This instruction type is boostable. + * boostable = 1: This instruction has been boosted: we have + * added a relative jump after the instruction copy in insn, + * so no single-step and fixup are needed (unless there's + * a post_handler or break_handler). + */ + int boostable; }; struct prev_kprobe { |