53 #define OPCODE1(insn)		((insn)->opcode.bytes[0])  argument
54 #define OPCODE2(insn)		((insn)->opcode.bytes[1])  argument
55 #define OPCODE3(insn)		((insn)->opcode.bytes[2])  argument
56 #define MODRM_REG(insn)		X86_MODRM_REG((insn)->modrm.value)  argument
268 static bool is_prefix_bad(struct insn *insn)  in is_prefix_bad()  argument
272 	for (i = 0; i < insn->prefixes.nbytes; i++) {  in is_prefix_bad()
273 		switch (insn->prefixes.bytes[i]) {  in is_prefix_bad()
285 static int uprobe_init_insn(struct arch_uprobe *auprobe, struct insn *insn, bool x86_64)  in uprobe_init_insn()  argument
289 	insn_init(insn, auprobe->insn, sizeof(auprobe->insn), x86_64);  in uprobe_init_insn()
291 	insn_get_length(insn);  in uprobe_init_insn()
292 	if (WARN_ON_ONCE(!insn_complete(insn)))  in uprobe_init_insn()
295 	if (is_prefix_bad(insn))  in uprobe_init_insn()
303 	if (test_bit(OPCODE1(insn), (unsigned long *)good_insns))  in uprobe_init_insn()
306 	if (insn->opcode.nbytes == 2) {  in uprobe_init_insn()
307 		if (test_bit(OPCODE2(insn), (unsigned long *)good_2byte_insns))  in uprobe_init_insn()
344 static void riprel_analyze(struct arch_uprobe *auprobe, struct insn *insn)  in riprel_analyze()  argument
350 	if (!insn_rip_relative(insn))  in riprel_analyze()
358 	if (insn->rex_prefix.nbytes) {  in riprel_analyze()
359 		cursor = auprobe->insn + insn_offset_rex_prefix(insn);  in riprel_analyze()
367 	if (insn->vex_prefix.nbytes == 3) {  in riprel_analyze()
376 		cursor = auprobe->insn + insn_offset_vex_prefix(insn) + 1;  in riprel_analyze()
420 	reg = MODRM_REG(insn);	/* Fetch modrm.reg */  in riprel_analyze()
422 	if (insn->vex_prefix.nbytes == 2)  in riprel_analyze()
423 		reg2 = insn->vex_prefix.bytes[1];  in riprel_analyze()
424 	else if (insn->vex_prefix.nbytes == 3)  in riprel_analyze()
425 		reg2 = insn->vex_prefix.bytes[2];  in riprel_analyze()
456 	cursor = auprobe->insn + insn_offset_modrm(insn);  in riprel_analyze()
507 static void riprel_analyze(struct arch_uprobe *auprobe, struct insn *insn)  in riprel_analyze()  argument
686 static void branch_clear_offset(struct arch_uprobe *auprobe, struct insn *insn)  in branch_clear_offset()  argument
702 	memset(auprobe->insn + insn_offset_immediate(insn),  in branch_clear_offset()
703 		0, insn->immediate.nbytes);  in branch_clear_offset()
712 static int branch_setup_xol_ops(struct arch_uprobe *auprobe, struct insn *insn)  in branch_setup_xol_ops()  argument
714 	u8 opc1 = OPCODE1(insn);  in branch_setup_xol_ops()
724 		branch_clear_offset(auprobe, insn);  in branch_setup_xol_ops()
728 		if (insn->opcode.nbytes != 2)  in branch_setup_xol_ops()
734 		opc1 = OPCODE2(insn) - 0x10;  in branch_setup_xol_ops()
745 	for (i = 0; i < insn->prefixes.nbytes; i++) {  in branch_setup_xol_ops()
746 		if (insn->prefixes.bytes[i] == 0x66)  in branch_setup_xol_ops()
751 	auprobe->branch.ilen = insn->length;  in branch_setup_xol_ops()
752 	auprobe->branch.offs = insn->immediate.value;  in branch_setup_xol_ops()
767 	struct insn insn;  in arch_uprobe_analyze_insn()  local
771 	ret = uprobe_init_insn(auprobe, &insn, is_64bit_mm(mm));  in arch_uprobe_analyze_insn()
775 	ret = branch_setup_xol_ops(auprobe, &insn);  in arch_uprobe_analyze_insn()
783 	switch (OPCODE1(&insn)) {  in arch_uprobe_analyze_insn()
798 		switch (MODRM_REG(&insn)) {  in arch_uprobe_analyze_insn()
808 		riprel_analyze(auprobe, &insn);  in arch_uprobe_analyze_insn()
811 	auprobe->defparam.ilen = insn.length;  in arch_uprobe_analyze_insn()