135 static void dump_instr(const char *lvl, struct pt_regs *regs)  in dump_instr()  argument
137 	unsigned long addr = instruction_pointer(regs);  in dump_instr()
138 	const int thumb = thumb_mode(regs);  in dump_instr()
174 static inline void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)  in dump_backtrace()  argument
176 	unwind_backtrace(regs, tsk);  in dump_backtrace()
179 static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)  in dump_backtrace()  argument
189 	if (regs) {  in dump_backtrace()
190 		fp = frame_pointer(regs);  in dump_backtrace()
191 		mode = processor_mode(regs);  in dump_backtrace()
237 static int __die(const char *str, int err, struct pt_regs *regs)  in __die()  argument
247 	ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, SIGSEGV);  in __die()
252 	__show_regs(regs);  in __die()
256 	if (!user_mode(regs) || in_interrupt()) {  in __die()
257 		dump_mem(KERN_EMERG, "Stack: ", regs->ARM_sp,  in __die()
259 		dump_backtrace(regs, tsk);  in __die()
260 		dump_instr(KERN_EMERG, regs);  in __die()
293 static void oops_end(unsigned long flags, struct pt_regs *regs, int signr)  in oops_end()  argument
295 	if (regs && kexec_should_crash(current))  in oops_end()
296 		crash_kexec(regs);  in oops_end()
319 void die(const char *str, struct pt_regs *regs, int err)  in die()  argument
325 	if (!user_mode(regs))  in die()
326 		bug_type = report_bug(regs->ARM_pc, regs);  in die()
330 	if (__die(str, err, regs))  in die()
333 	oops_end(flags, regs, sig);  in die()
336 void arm_notify_die(const char *str, struct pt_regs *regs,  in arm_notify_die()  argument
339 	if (user_mode(regs)) {  in arm_notify_die()
345 		die(str, regs, err);  in arm_notify_die()
390 static int call_undef_hook(struct pt_regs *regs, unsigned int instr)  in call_undef_hook()  argument
394 	int (*fn)(struct pt_regs *regs, unsigned int instr) = NULL;  in call_undef_hook()
399 		    (regs->ARM_cpsr & hook->cpsr_mask) == hook->cpsr_val)  in call_undef_hook()
403 	return fn ? fn(regs, instr) : 1;  in call_undef_hook()
406 asmlinkage void __exception do_undefinstr(struct pt_regs *regs)  in do_undefinstr()  argument
412 	pc = (void __user *)instruction_pointer(regs);  in do_undefinstr()
414 	if (processor_mode(regs) == SVC_MODE) {  in do_undefinstr()
416 		if (thumb_mode(regs)) {  in do_undefinstr()
426 	} else if (thumb_mode(regs)) {  in do_undefinstr()
443 	if (call_undef_hook(regs, instr) == 0)  in do_undefinstr()
451 		__show_regs(regs);  in do_undefinstr()
452 		dump_instr(KERN_INFO, regs);  in do_undefinstr()
461 	arm_notify_die("Oops - undefined instruction", regs, &info, 0, 6);  in do_undefinstr()
476 asmlinkage void __exception_irq_entry handle_fiq_as_nmi(struct pt_regs *regs)  in handle_fiq_as_nmi()  argument
478 	struct pt_regs *old_regs = set_irq_regs(regs);  in handle_fiq_as_nmi()
495 asmlinkage void bad_mode(struct pt_regs *regs, int reason)  in bad_mode()  argument
501 	die("Oops - bad mode", regs, 0);  in bad_mode()
506 static int bad_syscall(int n, struct pt_regs *regs)  in bad_syscall()  argument
512 		return regs->ARM_r0;  in bad_syscall()
519 		dump_instr(KERN_ERR, regs);  in bad_syscall()
526 	info.si_addr  = (void __user *)instruction_pointer(regs) -  in bad_syscall()
527 			 (thumb_mode(regs) ? 2 : 4);  in bad_syscall()
529 	arm_notify_die("Oops - bad syscall", regs, &info, n, 0);  in bad_syscall()
531 	return regs->ARM_r0;  in bad_syscall()
573 asmlinkage int arm_syscall(int no, struct pt_regs *regs)  in arm_syscall()  argument
578 		return bad_syscall(no, regs);  in arm_syscall()
587 		arm_notify_die("branch through zero", regs, &info, 0, 0);  in arm_syscall()
591 		regs->ARM_pc -= thumb_mode(regs) ? 2 : 4;  in arm_syscall()
592 		ptrace_break(current, regs);  in arm_syscall()
593 		return regs->ARM_r0;  in arm_syscall()
610 		return do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2);  in arm_syscall()
615 		regs->ARM_cpsr &= ~MODE32_BIT;  in arm_syscall()
616 		return regs->ARM_r0;  in arm_syscall()
621 		regs->ARM_cpsr |= MODE32_BIT;  in arm_syscall()
622 		return regs->ARM_r0;  in arm_syscall()
625 		set_tls(regs->ARM_r0);  in arm_syscall()
643 					 struct pt_regs *regs);  in arm_syscall()
645 		unsigned long addr = regs->ARM_r2;  in arm_syscall()
650 		regs->ARM_cpsr &= ~PSR_C_BIT;  in arm_syscall()
664 		val -= regs->ARM_r0;  in arm_syscall()
666 			*(unsigned long *)addr = regs->ARM_r1;  in arm_syscall()
667 			regs->ARM_cpsr |= PSR_C_BIT;  in arm_syscall()
676 		do_DataAbort(addr, 15 + (1 << 11), regs);  in arm_syscall()
697 		dump_instr("", regs);  in arm_syscall()
698 		if (user_mode(regs)) {  in arm_syscall()
699 			__show_regs(regs);  in arm_syscall()
700 			c_backtrace(frame_pointer(regs), processor_mode(regs));  in arm_syscall()
707 	info.si_addr  = (void __user *)instruction_pointer(regs) -  in arm_syscall()
708 			 (thumb_mode(regs) ? 2 : 4);  in arm_syscall()
710 	arm_notify_die("Oops - bad syscall(2)", regs, &info, no, 0);  in arm_syscall()
724 static int get_tp_trap(struct pt_regs *regs, unsigned int instr)  in get_tp_trap()  argument
729 	regs->uregs[reg] = current_thread_info()->tp_value[0];  in get_tp_trap()
730 	regs->ARM_pc += 4;  in get_tp_trap()
765 baddataabort(int code, unsigned long instr, struct pt_regs *regs)  in baddataabort()  argument
767 	unsigned long addr = instruction_pointer(regs);  in baddataabort()
774 		dump_instr(KERN_ERR, regs);  in baddataabort()
784 	arm_notify_die("unknown data abort code", regs, &info, instr, 0);  in baddataabort()