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authorDavid A. Long <dave.long@linaro.org>2014-03-06 18:06:43 -0500
committerDavid A. Long <dave.long@linaro.org>2014-03-18 16:39:36 -0400
commit3e6cd394bb10c2d65322e5f5d2ff0a9074d903a1 (patch)
tree0bbc61744e1a60d9a3a823a44ae5a7c279347eda /arch/arm/kernel/kprobes.h
parent87abef63ead5ac9e2c67f0c07c461eda6be16aeb (diff)
downloadblackbird-op-linux-3e6cd394bb10c2d65322e5f5d2ff0a9074d903a1.tar.gz
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ARM: use a function table for determining instruction interpreter action
Make the instruction interpreter call back to semantic action functions through a function pointer array provided by the invoker. The interpreter decodes the instructions into groups and uses the group number to index into the supplied array. kprobes and uprobes code will each supply their own array of functions. Signed-off-by: David A. Long <dave.long@linaro.org> Acked-by: Jon Medhurst <tixy@linaro.org>
Diffstat (limited to 'arch/arm/kernel/kprobes.h')
-rw-r--r--arch/arm/kernel/kprobes.h15
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h
index aa68c0ea1a0b..7798035d6003 100644
--- a/arch/arm/kernel/kprobes.h
+++ b/arch/arm/kernel/kprobes.h
@@ -27,6 +27,8 @@
#define KPROBE_THUMB16_BREAKPOINT_INSTRUCTION 0xde18
#define KPROBE_THUMB32_BREAKPOINT_INSTRUCTION 0xf7f0a018
+struct decode_header;
+union decode_action;
enum kprobe_insn {
INSN_REJECTED,
@@ -35,19 +37,24 @@ enum kprobe_insn {
};
typedef enum kprobe_insn (kprobe_decode_insn_t)(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const union decode_action *);
#ifdef CONFIG_THUMB2_KERNEL
enum kprobe_insn thumb16_kprobe_decode_insn(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const union decode_action *);
enum kprobe_insn thumb32_kprobe_decode_insn(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const union decode_action *);
#else /* !CONFIG_THUMB2_KERNEL */
enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const union decode_action *);
+
#endif
void __init arm_kprobe_decode_init(void);
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