From: Wang Nan Date: Mon, 5 Jan 2015 11:29:18 +0000 (+0800) Subject: ARM: kprobes: introduces checker X-Git-Tag: fixes-v4.0-rc1~125^2^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83803d97dae1eaf6850a45ef8ee179cc66e147dc;p=pandora-kernel.git ARM: kprobes: introduces checker This patch introdces 'checker' to decoding phase, and calls checkers when instruction decoding. This allows further decoding for specific instructions. This patch introduces a stub call of checkers in kprobe arch_prepare_kprobe() as an example and for further expansion. Signed-off-by: Wang Nan Reviewed-by: Jon Medhurst Reviewed-by: Masami Hiramatsu Signed-off-by: Jon Medhurst --- diff --git a/arch/arm/probes/decode-arm.c b/arch/arm/probes/decode-arm.c index 04114f74a2d2..f72c33a2dcfb 100644 --- a/arch/arm/probes/decode-arm.c +++ b/arch/arm/probes/decode-arm.c @@ -726,10 +726,11 @@ static void __kprobes arm_singlestep(probes_opcode_t insn, */ enum probes_insn __kprobes arm_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi, - bool emulate, const union decode_action *actions) + bool emulate, const union decode_action *actions, + const struct decode_checker *checkers[]) { asi->insn_singlestep = arm_singlestep; asi->insn_check_cc = probes_condition_checks[insn>>28]; return probes_decode_insn(insn, asi, probes_decode_arm_table, false, - emulate, actions); + emulate, actions, checkers); } diff --git a/arch/arm/probes/decode-arm.h b/arch/arm/probes/decode-arm.h index cb0b26331930..b3b80f6d414b 100644 --- a/arch/arm/probes/decode-arm.h +++ b/arch/arm/probes/decode-arm.h @@ -68,6 +68,7 @@ extern const union decode_item probes_decode_arm_table[]; enum probes_insn arm_probes_decode_insn(probes_opcode_t, struct arch_probes_insn *, bool emulate, - const union decode_action *actions); + const union decode_action *actions, + const struct decode_checker *checkers[]); #endif Reading git-diff-tree failed