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>
diff --git a/arch/arm/kernel/probes-arm.h b/arch/arm/kernel/probes-arm.h
index 8608472..ef30894 100644
--- a/arch/arm/kernel/probes-arm.h
+++ b/arch/arm/kernel/probes-arm.h
@@ -15,24 +15,48 @@
#ifndef _ARM_KERNEL_PROBES_ARM_H
#define _ARM_KERNEL_PROBES_ARM_H
+enum probes_arm_action {
+ PROBES_EMULATE_NONE,
+ PROBES_SIMULATE_NOP,
+ PROBES_PRELOAD_IMM,
+ PROBES_PRELOAD_REG,
+ PROBES_BRANCH_IMM,
+ PROBES_BRANCH_REG,
+ PROBES_MRS,
+ PROBES_CLZ,
+ PROBES_SATURATING_ARITHMETIC,
+ PROBES_MUL1,
+ PROBES_MUL2,
+ PROBES_SWP,
+ PROBES_LDRSTRD,
+ PROBES_LOAD,
+ PROBES_STORE,
+ PROBES_LOAD_EXTRA,
+ PROBES_STORE_EXTRA,
+ PROBES_MOV_IP_SP,
+ PROBES_DATA_PROCESSING_REG,
+ PROBES_DATA_PROCESSING_IMM,
+ PROBES_MOV_HALFWORD,
+ PROBES_SEV,
+ PROBES_WFE,
+ PROBES_SATURATE,
+ PROBES_REV,
+ PROBES_MMI,
+ PROBES_PACK,
+ PROBES_EXTEND,
+ PROBES_EXTEND_ADD,
+ PROBES_MUL_ADD_LONG,
+ PROBES_MUL_ADD,
+ PROBES_BITFIELD,
+ PROBES_BRANCH,
+ PROBES_LDMSTM,
+ NUM_PROBES_ARM_ACTIONS
+};
+
void __kprobes simulate_bbl(struct kprobe *p, struct pt_regs *regs);
void __kprobes simulate_blx1(struct kprobe *p, struct pt_regs *regs);
void __kprobes simulate_blx2bx(struct kprobe *p, struct pt_regs *regs);
void __kprobes simulate_mrs(struct kprobe *p, struct pt_regs *regs);
void __kprobes simulate_mov_ipsp(struct kprobe *p, struct pt_regs *regs);
-void __kprobes emulate_ldrdstrd(struct kprobe *p, struct pt_regs *regs);
-void __kprobes emulate_ldr(struct kprobe *p, struct pt_regs *regs);
-void __kprobes emulate_str(struct kprobe *p, struct pt_regs *regs);
-void __kprobes emulate_rd12rn16rm0rs8_rwflags(struct kprobe *p,
- struct pt_regs *regs);
-void __kprobes emulate_rd12rn16rm0_rwflags_nopc(struct kprobe *p,
- struct pt_regs *regs);
-void __kprobes emulate_rd16rn12rm0rs8_rwflags_nopc(struct kprobe *p,
- struct pt_regs *regs);
-void __kprobes emulate_rd12rm0_noflags_nopc(struct kprobe *p,
- struct pt_regs *regs);
-void __kprobes emulate_rdlo12rdhi16rn0rm8_rwflags_nopc(struct kprobe *p,
- struct pt_regs *regs);
-
#endif