194 static int insn_is_indirect_jump(struct insn *insn)  in insn_is_indirect_jump()  argument
196 	return ((insn->opcode.bytes[0] == 0xff &&  in insn_is_indirect_jump()
197 		(X86_MODRM_REG(insn->modrm.value) & 6) == 4) || /* Jump */  in insn_is_indirect_jump()
198 		insn->opcode.bytes[0] == 0xea);	/* Segment based jump */  in insn_is_indirect_jump()
202 static int insn_jump_into_range(struct insn *insn, unsigned long start, int len)  in insn_jump_into_range()  argument
206 	switch (insn->opcode.bytes[0]) {  in insn_jump_into_range()
215 		if ((insn->opcode.bytes[1] & 0xf0) == 0x80) /* jcc near */  in insn_jump_into_range()
219 		if ((insn->opcode.bytes[0] & 0xf0) == 0x70) /* jcc short */  in insn_jump_into_range()
223 	target = (unsigned long)insn->next_byte + insn->immediate.value;  in insn_jump_into_range()
232 	struct insn insn;  in can_optimize()  local
264 		kernel_insn_init(&insn, (void *)recovered_insn, MAX_INSN_SIZE);  in can_optimize()
265 		insn_get_length(&insn);  in can_optimize()
267 		if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION)  in can_optimize()
270 		insn.kaddr = (void *)addr;  in can_optimize()
271 		insn.next_byte = (void *)(addr + insn.length);  in can_optimize()
273 		if (insn_is_indirect_jump(&insn) ||  in can_optimize()
274 		    insn_jump_into_range(&insn, paddr + INT3_SIZE,  in can_optimize()
277 		addr += insn.length;  in can_optimize()
310 	if (op->optinsn.insn) {  in __arch_remove_optimized_kprobe()
311 		free_optinsn_slot(op->optinsn.insn, dirty);  in __arch_remove_optimized_kprobe()
312 		op->optinsn.insn = NULL;  in __arch_remove_optimized_kprobe()
337 	op->optinsn.insn = get_optinsn_slot();  in arch_prepare_optimized_kprobe()
338 	if (!op->optinsn.insn)  in arch_prepare_optimized_kprobe()
345 	rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE;  in arch_prepare_optimized_kprobe()
351 	buf = (u8 *)op->optinsn.insn;  in arch_prepare_optimized_kprobe()
390 		s32 rel = (s32)((long)op->optinsn.insn -  in arch_optimize_kprobes()
403 			     op->optinsn.insn);  in arch_optimize_kprobes()
418 		     op->optinsn.insn);  in arch_unoptimize_kprobe()
444 		regs->ip = (unsigned long)op->optinsn.insn + TMPL_END_IDX;  in setup_detour_execution()