114 static void dump_instr(const char *lvl, struct pt_regs *regs)  in dump_instr()  argument
116 	unsigned long addr = instruction_pointer(regs);  in dump_instr()
146 static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)  in dump_backtrace()  argument
150 	pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);  in dump_backtrace()
155 	if (regs) {  in dump_backtrace()
156 		frame.fp = regs->regs[29];  in dump_backtrace()
157 		frame.sp = regs->sp;  in dump_backtrace()
158 		frame.pc = regs->pc;  in dump_backtrace()
203 		 struct pt_regs *regs)  in __die()  argument
213 	ret = notify_die(DIE_OOPS, str, regs, err, 0, SIGSEGV);  in __die()
218 	__show_regs(regs);  in __die()
222 	if (!user_mode(regs) || in_interrupt()) {  in __die()
223 		dump_mem(KERN_EMERG, "Stack: ", regs->sp,  in __die()
225 			 compat_user_mode(regs));  in __die()
226 		dump_backtrace(regs, tsk);  in __die()
227 		dump_instr(KERN_EMERG, regs);  in __die()
238 void die(const char *str, struct pt_regs *regs, int err)  in die()  argument
248 	ret = __die(str, err, thread, regs);  in die()
250 	if (regs && kexec_should_crash(thread->task))  in die()
251 		crash_kexec(regs);  in die()
266 void arm64_notify_die(const char *str, struct pt_regs *regs,  in arm64_notify_die()  argument
269 	if (user_mode(regs)) {  in arm64_notify_die()
274 		die(str, regs, err);  in arm64_notify_die()
299 static int call_undef_hook(struct pt_regs *regs)  in call_undef_hook()  argument
304 	int (*fn)(struct pt_regs *regs, u32 instr) = NULL;  in call_undef_hook()
305 	void __user *pc = (void __user *)instruction_pointer(regs);  in call_undef_hook()
307 	if (!user_mode(regs))  in call_undef_hook()
310 	if (compat_thumb_mode(regs)) {  in call_undef_hook()
333 			(regs->pstate & hook->pstate_mask) == hook->pstate_val)  in call_undef_hook()
338 	return fn ? fn(regs, instr) : 1;  in call_undef_hook()
341 asmlinkage void __exception do_undefinstr(struct pt_regs *regs)  in do_undefinstr()  argument
344 	void __user *pc = (void __user *)instruction_pointer(regs);  in do_undefinstr()
347 	if (!aarch32_break_handler(regs))  in do_undefinstr()
350 	if (call_undef_hook(regs) == 0)  in do_undefinstr()
356 		dump_instr(KERN_INFO, regs);  in do_undefinstr()
364 	arm64_notify_die("Oops - undefined instruction", regs, &info, 0);  in do_undefinstr()
367 long compat_arm_syscall(struct pt_regs *regs);
369 asmlinkage long do_ni_syscall(struct pt_regs *regs)  in do_ni_syscall()  argument
374 		ret = compat_arm_syscall(regs);  in do_ni_syscall()
382 			task_pid_nr(current), (int)regs->syscallno);  in do_ni_syscall()
383 		dump_instr("", regs);  in do_ni_syscall()
384 		if (user_mode(regs))  in do_ni_syscall()
385 			__show_regs(regs);  in do_ni_syscall()
439 asmlinkage void bad_mode(struct pt_regs *regs, int reason, unsigned int esr)  in bad_mode()  argument
442 	void __user *pc = (void __user *)instruction_pointer(regs);  in bad_mode()
447 	__show_regs(regs);  in bad_mode()
454 	arm64_notify_die("Oops - bad mode", regs, &info, 0);  in bad_mode()
491 static int bug_handler(struct pt_regs *regs, unsigned int esr)  in bug_handler()  argument
493 	if (user_mode(regs))  in bug_handler()
496 	switch (report_bug(regs->pc, regs)) {  in bug_handler()
498 		die("Oops - BUG", regs, 0);  in bug_handler()
503 		dump_backtrace(regs, NULL);  in bug_handler()
512 	regs->pc += AARCH64_INSN_SIZE;	/* skip BRK and resume */  in bug_handler()
527 		struct pt_regs *regs)  in early_brk64()  argument
529 	return bug_handler(regs, esr) != DBG_HOOK_HANDLED;  in early_brk64()