write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/x86/include/asm/kprobes.h
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@@ -58,14 +58,29 @@
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 	/* copy of the original instruction */
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 	kprobe_opcode_t *insn;
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 	/*
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-	 * boostable = false: This instruction type is not boostable.
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-	 * boostable = true: This instruction has been boosted: we have
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+	 * boostable = 0: This instruction type is not boostable.
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+	 * boostable = 1: This instruction has been boosted: we have
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 	 * added a relative jump after the instruction copy in insn,
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 	 * so no single-step and fixup are needed (unless there's
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 	 * a post_handler).
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 	 */
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-	bool boostable;
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-	bool if_modifier;
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+	unsigned boostable:1;
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+	unsigned char size;	/* The size of insn */
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+	union {
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+		unsigned char opcode;
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+		struct {
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+			unsigned char type;
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+		} jcc;
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+		struct {
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+			unsigned char type;
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+			unsigned char asize;
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+		} loop;
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+		struct {
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+			unsigned char reg;
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+		} indirect;
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+	};
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+	s32 rel32;	/* relative offset must be s32, s16, or s8 */
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+	void (*emulate_op)(struct kprobe *p, struct pt_regs *regs);
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 	/* Number of bytes of text poked */
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 	int tp_len;
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 };
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@@ -104,7 +119,6 @@
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 extern int kprobe_exceptions_notify(struct notifier_block *self,
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 				    unsigned long val, void *data);
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 extern int kprobe_int3_handler(struct pt_regs *regs);
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-extern int kprobe_debug_handler(struct pt_regs *regs);
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 #else
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