66 int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
216 void show_regs(struct pt_regs *regs)  in show_regs()  argument
222 	       0,             regs->regs[1], regs->regs[2], regs->regs[3],  in show_regs()
223 	       regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);  in show_regs()
225 	       regs->regs[8],  regs->regs[9],  regs->regs[10], regs->regs[11],  in show_regs()
226 	       regs->regs[12], regs->regs[13], regs->regs[14], regs->regs[15]);  in show_regs()
228 	       regs->regs[16], regs->regs[17], regs->regs[18], regs->regs[19],  in show_regs()
229 	       regs->regs[20], regs->regs[21], regs->regs[22], regs->regs[23]);  in show_regs()
231 	       regs->regs[24], regs->regs[25],  in show_regs()
232 	       regs->regs[28], regs->regs[29], regs->regs[30], regs->regs[31]);  in show_regs()
233 	printk("Hi : %08lx\n", regs->hi);  in show_regs()
234 	printk("Lo : %08lx\n", regs->lo);  in show_regs()
239 	printk("epc   : %08lx    %s\n", regs->cp0_epc, print_tainted());  in show_regs()
240 	printk("Status: %08lx\n", regs->cp0_status);  in show_regs()
241 	printk("Cause : %08lx\n", regs->cp0_cause);  in show_regs()
245 void show_registers(struct pt_regs *regs)  in show_registers()  argument
247 	show_regs(regs);  in show_registers()
250 	show_stack((long *) regs->regs[29]);  in show_registers()
251 	show_trace((long *) regs->regs[29]);  in show_registers()
252 	show_code((unsigned int *) regs->cp0_epc);  in show_registers()
258 void __die(const char * str, struct pt_regs * regs, const char * file,  in __die()  argument
267 	show_registers(regs);  in __die()
272 void __die_if_kernel(const char * str, struct pt_regs * regs,  in __die_if_kernel()  argument
275 	if (!user_mode(regs))  in __die_if_kernel()
276 		__die(str, regs, file, func, line);  in __die_if_kernel()
348 asmlinkage void do_be(struct pt_regs *regs)  in do_be()  argument
352 	int data = regs->cp0_cause & 4;  in do_be()
355 	if (data && !user_mode(regs))  in do_be()
356 		fixup = search_dbe_table(exception_epc(regs));  in do_be()
362 		action = board_be_handler(regs, fixup != 0);  in do_be()
370 						  regs->cp0_epc);  in do_be()
371 			regs->cp0_epc = new_epc;  in do_be()
384 	       regs->cp0_epc, regs->regs[31]);  in do_be()
385 	die_if_kernel("Oops", regs);  in do_be()
389 static inline int get_insn_opcode(struct pt_regs *regs, unsigned int *opcode)  in get_insn_opcode()  argument
393 	epc = (unsigned int *) regs->cp0_epc +  in get_insn_opcode()
394 	      ((regs->cp0_cause & CAUSEF_BD) != 0);  in get_insn_opcode()
421 static inline void simulate_ll(struct pt_regs *regs, unsigned int opcode)  in simulate_ll()  argument
437 	vaddr = (unsigned long *)((long)(regs->regs[(opcode & BASE) >> 21]) + offset);  in simulate_ll()
455 	regs->regs[(opcode & RT) >> 16] = value;  in simulate_ll()
457 	compute_return_epc(regs);  in simulate_ll()
464 static inline void simulate_sc(struct pt_regs *regs, unsigned int opcode)  in simulate_sc()  argument
480 	vaddr = (unsigned long *)((long)(regs->regs[(opcode & BASE) >> 21]) + offset);  in simulate_sc()
488 		regs->regs[reg] = 0;  in simulate_sc()
489 		compute_return_epc(regs);  in simulate_sc()
493 	if (put_user(regs->regs[reg], vaddr)) {  in simulate_sc()
498 	regs->regs[reg] = 1;  in simulate_sc()
500 	compute_return_epc(regs);  in simulate_sc()
514 static inline int simulate_llsc(struct pt_regs *regs)  in simulate_llsc()  argument
518 	if (unlikely(get_insn_opcode(regs, &opcode)))  in simulate_llsc()
522 		simulate_ll(regs, opcode);  in simulate_llsc()
526 		simulate_sc(regs, opcode);  in simulate_llsc()
533 asmlinkage void do_ov(struct pt_regs *regs)  in do_ov()  argument
540 	info.si_addr = (void *)regs->cp0_epc;  in do_ov()
547 asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)  in do_fpe()  argument
565 		sig = fpu_emulator_cop1Handler (0, regs,  in do_fpe()
587 asmlinkage void do_bp(struct pt_regs *regs)  in do_bp()  argument
592 	die_if_kernel("Break instruction in kernel code", regs);  in do_bp()
594 	if (get_insn_opcode(regs, &opcode))  in do_bp()
622 		info.si_addr = (void *)regs->cp0_epc;  in do_bp()
630 asmlinkage void do_tr(struct pt_regs *regs)  in do_tr()  argument
635 	if (get_insn_opcode(regs, &opcode))  in do_tr()
657 		info.si_addr = (void *)regs->cp0_epc;  in do_tr()
665 asmlinkage void do_ri(struct pt_regs *regs)  in do_ri()  argument
667 	die_if_kernel("Reserved instruction in kernel code", regs);  in do_ri()
670 		if (!simulate_llsc(regs))  in do_ri()
676 asmlinkage void do_cpu(struct pt_regs *regs)  in do_cpu()  argument
680 	die_if_kernel("do_cpu invoked from kernel context!", regs);  in do_cpu()
682 	cpid = (regs->cp0_cause >> CAUSEB_CE) & 3;  in do_cpu()
689 		if (!simulate_llsc(regs))  in do_cpu()
703 			int sig = fpu_emulator_cop1Handler(0, regs,  in do_cpu()
719 asmlinkage void do_mdmx(struct pt_regs *regs)  in do_mdmx()  argument
724 asmlinkage void do_watch(struct pt_regs *regs)  in do_watch()  argument
731 	show_regs(regs);  in do_watch()
735 asmlinkage void do_mcheck(struct pt_regs *regs)  in do_mcheck()  argument
737 	show_regs(regs);  in do_mcheck()
745 	      (regs->cp0_status & ST0_TS) ? "" : "not ");  in do_mcheck()
748 asmlinkage void do_reserved(struct pt_regs *regs)  in do_reserved()  argument
755 	show_regs(regs);  in do_reserved()
757 	      (regs->cp0_cause & 0x7f) >> 2);  in do_reserved()
816 void ejtag_exception_handler(struct pt_regs *regs)  in ejtag_exception_handler()  argument
832 		old_epc = regs->cp0_epc;  in ejtag_exception_handler()
833 		regs->cp0_epc = depc;  in ejtag_exception_handler()
834 		__compute_return_epc(regs);  in ejtag_exception_handler()
835 		depc = regs->cp0_epc;  in ejtag_exception_handler()
836 		regs->cp0_epc = old_epc;  in ejtag_exception_handler()
850 void nmi_exception_handler(struct pt_regs *regs)  in nmi_exception_handler()  argument
853 	die("NMI", regs);  in nmi_exception_handler()