Messages in this thread Patch in this message | | | From | Wang Nan <> | Subject | [RFC PATCH 2/3] early kprobes: x86: add definition for vmlinux.lds use. | Date | Sun, 15 Feb 2015 16:27:09 +0800 |
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This patch defines MAX_OPTINSN_SIZE, MAX_INSN_SIZE and KPROBE_OPCODE_SIZE for x86 for vmlinux.lds.S use.
Signed-off-by: Wang Nan <wangnan0@huawei.com> --- arch/x86/kernel/vmlinux.lds.S | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 00bf300..e46d877 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -29,6 +29,16 @@ #undef i386 /* in case the preprocessor is a 32bit one */ +#ifdef CONFIG_EARLY_KPROBES +# define MAX_INSN_SIZE 16 +# define RELATIVE_ADDR_SIZE 4 +# define RELATIVEJUMP_SIZE 5 +# define KPROBE_OPCODE_SIZE 1 +# define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + RELATIVE_ADDR_SIZE) +# define MAX_OPTINSN_SIZE ((optprobe_template_end - optprobe_template_entry) + \ + MAX_OPTIMIZED_LENGTH + RELATIVEJUMP_SIZE) +#endif + OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT) #ifdef CONFIG_X86_32 -- 1.8.4
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