100 static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)  in prepare_singlestep()  argument
102 	enable_single_step(regs);  in prepare_singlestep()
110 	regs->nip = (unsigned long)p->ainsn.insn;  in prepare_singlestep()
127 static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,  in set_current_kprobe()  argument
131 	kcb->kprobe_saved_msr = regs->msr;  in set_current_kprobe()
135 				      struct pt_regs *regs)  in arch_prepare_kretprobe()  argument
137 	ri->ret_addr = (kprobe_opcode_t *)regs->link;  in arch_prepare_kretprobe()
140 	regs->link = (unsigned long)kretprobe_trampoline;  in arch_prepare_kretprobe()
143 static int __kprobes kprobe_handler(struct pt_regs *regs)  in kprobe_handler()  argument
147 	unsigned int *addr = (unsigned int *)regs->nip;  in kprobe_handler()
165 				regs->msr &= ~MSR_SINGLESTEP;  in kprobe_handler()
166 				regs->msr |= kcb->kprobe_saved_msr;  in kprobe_handler()
176 			set_current_kprobe(p, regs, kcb);  in kprobe_handler()
177 			kcb->kprobe_saved_msr = regs->msr;  in kprobe_handler()
179 			prepare_singlestep(p, regs);  in kprobe_handler()
196 			if (p->break_handler && p->break_handler(p, regs)) {  in kprobe_handler()
228 	set_current_kprobe(p, regs, kcb);  in kprobe_handler()
229 	if (p->pre_handler && p->pre_handler(p, regs))  in kprobe_handler()
238 		ret = emulate_step(regs, insn);  in kprobe_handler()
248 				p->post_handler(p, regs, 0);  in kprobe_handler()
266 	prepare_singlestep(p, regs);  in kprobe_handler()
292 						struct pt_regs *regs)  in trampoline_probe_handler()  argument
322 			ri->rp->handler(ri, regs);  in trampoline_probe_handler()
337 	regs->nip = orig_ret_address;  in trampoline_probe_handler()
363 static int __kprobes post_kprobe_handler(struct pt_regs *regs)  in post_kprobe_handler()  argument
372 	if (((unsigned long)cur->ainsn.insn + 4) != regs->nip)  in post_kprobe_handler()
377 		cur->post_handler(cur, regs, 0);  in post_kprobe_handler()
381 	regs->nip = (unsigned long)cur->addr + 4;  in post_kprobe_handler()
382 	regs->msr |= kcb->kprobe_saved_msr;  in post_kprobe_handler()
398 	if (regs->msr & MSR_SINGLESTEP)  in post_kprobe_handler()
404 int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)  in kprobe_fault_handler()  argument
420 		regs->nip = (unsigned long)cur->addr;  in kprobe_fault_handler()
421 		regs->msr &= ~MSR_SINGLESTEP; /* Turn off 'trace' bits */  in kprobe_fault_handler()
422 		regs->msr |= kcb->kprobe_saved_msr;  in kprobe_fault_handler()
445 		if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))  in kprobe_fault_handler()
452 		if ((entry = search_exception_tables(regs->nip)) != NULL) {  in kprobe_fault_handler()
453 			regs->nip = entry->fixup;  in kprobe_fault_handler()
477 	if (args->regs && user_mode(args->regs))  in kprobe_exceptions_notify()
482 		if (kprobe_handler(args->regs))  in kprobe_exceptions_notify()
486 		if (post_kprobe_handler(args->regs))  in kprobe_exceptions_notify()
500 int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)  in setjmp_pre_handler()  argument
505 	memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));  in setjmp_pre_handler()
508 	regs->nip = arch_deref_entry_point(jp->entry);  in setjmp_pre_handler()
511 	regs->gpr[12] = (unsigned long)jp->entry;  in setjmp_pre_handler()
513 	regs->gpr[2] = (unsigned long)(((func_descr_t *)jp->entry)->toc);  in setjmp_pre_handler()
529 int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)  in longjmp_break_handler()  argument
538 	memcpy(regs, &kcb->jprobe_saved_regs, sizeof(struct pt_regs));  in longjmp_break_handler()