37 #define CHK_REMOTE_DEBUG(regs)                                               \  argument
39   if ((kgdb_debug_hook != (kgdb_debug_hook_t *) NULL) && (!user_mode(regs))) \
41     (*kgdb_debug_hook)(regs);                                                \
45 #define CHK_REMOTE_DEBUG(regs)  argument
51 			  struct pt_regs regs) \
56  	if (is_dsp_inst(&regs)) { \
58 		regs.sr |= SR_DSP; \
66         CHK_REMOTE_DEBUG(&regs); \
68 	die_if_no_fixup(str,&regs,error_code); \
81 void die(const char * str, struct pt_regs * regs, long err)  in die()  argument
86 	CHK_REMOTE_DEBUG(regs);  in die()
87 	show_regs(regs);  in die()
92 static inline void die_if_kernel(const char * str, struct pt_regs * regs, long err)  in die_if_kernel()  argument
94 	if (!user_mode(regs))  in die_if_kernel()
95 		die(str, regs, err);  in die_if_kernel()
107 static int die_if_no_fixup(const char * str, struct pt_regs * regs, long err)  in die_if_no_fixup()  argument
109 	if (!user_mode(regs))  in die_if_no_fixup()
112 		fixup = search_exception_table(regs->pc);  in die_if_no_fixup()
114 			regs->pc = fixup;  in die_if_no_fixup()
117 		die(str, regs, err);  in die_if_no_fixup()
129 static int handle_unaligned_ins(u16 instruction, struct pt_regs *regs)  in handle_unaligned_ins()  argument
136 	rn = &regs->regs[index];  in handle_unaligned_ins()
139 	rm = &regs->regs[index];  in handle_unaligned_ins()
149 			src += regs->regs[0];  in handle_unaligned_ins()
179 			dst += regs->regs[0];  in handle_unaligned_ins()
253 			src = (unsigned char*) &regs->regs[0];  in handle_unaligned_ins()
268 			dst = (unsigned char*) &regs->regs[0];  in handle_unaligned_ins()
300 	return die_if_no_fixup("Fault in unaligned fixup", regs, 0);  in handle_unaligned_ins()
307 static inline int handle_unaligned_delayslot(struct pt_regs *regs)  in handle_unaligned_delayslot()  argument
311 	if (copy_from_user(&instruction, (u16 *)(regs->pc+2), 2)) {  in handle_unaligned_delayslot()
313 		if (user_mode(regs))  in handle_unaligned_delayslot()
317 		die("delay-slot-insn faulting in handle_unaligned_delayslot", regs, 0);  in handle_unaligned_delayslot()
320 	return handle_unaligned_ins(instruction,regs);  in handle_unaligned_delayslot()
339 static int handle_unaligned_access(u16 instruction, struct pt_regs *regs)  in handle_unaligned_access()  argument
345 	rm = regs->regs[index];  in handle_unaligned_access()
348 	if (user_mode(regs) && handle_unaligned_notify_count>0) {  in handle_unaligned_access()
352 		       current->comm,current->pid,(u16*)regs->pc,instruction);  in handle_unaligned_access()
360 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
362 				regs->pc = regs->pr;  in handle_unaligned_access()
366 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
368 				regs->pc += rm + 4;  in handle_unaligned_access()
372 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
374 				regs->pr = regs->pc + 4;  in handle_unaligned_access()
375 				regs->pc += rm + 4;  in handle_unaligned_access()
393 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
395 				regs->pc = rm;  in handle_unaligned_access()
399 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
401 				regs->pr = regs->pc + 4;  in handle_unaligned_access()
402 				regs->pc = rm;  in handle_unaligned_access()
426 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
429 				if ((regs->sr & 0x00000001) != 0)  in handle_unaligned_access()
430 					regs->pc += 4; /* next after slot */  in handle_unaligned_access()
433 					regs->pc += SH_PC_8BIT_OFFSET(instruction);  in handle_unaligned_access()
439 			ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
442 				if ((regs->sr & 0x00000001) == 0)  in handle_unaligned_access()
443 					regs->pc += 4; /* next after slot */  in handle_unaligned_access()
446 					regs->pc += SH_PC_8BIT_OFFSET(instruction);  in handle_unaligned_access()
453 		ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
455 			regs->pc += SH_PC_12BIT_OFFSET(instruction);  in handle_unaligned_access()
459 		ret = handle_unaligned_delayslot(regs);  in handle_unaligned_access()
461 			regs->pr = regs->pc + 4;  in handle_unaligned_access()
462 			regs->pc += SH_PC_12BIT_OFFSET(instruction);  in handle_unaligned_access()
470 	ret = handle_unaligned_ins(instruction,regs);  in handle_unaligned_access()
472 		regs->pc += 2;  in handle_unaligned_access()
479 asmlinkage void do_address_error(struct pt_regs *regs,   in do_address_error()  argument
492 	if (user_mode(regs)) {  in do_address_error()
498 		if (regs->pc & 1)  in do_address_error()
502 		if (copy_from_user(&instruction, (u16 *)(regs->pc), 2)) {  in do_address_error()
510 		tmp = handle_unaligned_access(instruction, regs);  in do_address_error()
520 		if (regs->pc & 1)  in do_address_error()
521 			die("unaligned program counter", regs, error_code);  in do_address_error()
524 		if (copy_from_user(&instruction, (u16 *)(regs->pc), 2)) {  in do_address_error()
529 			die("insn faulting in do_address_error", regs, 0);  in do_address_error()
532 		handle_unaligned_access(instruction, regs);  in do_address_error()
541 int is_dsp_inst(struct pt_regs *regs)  in is_dsp_inst()  argument
545 	get_user(inst, ((unsigned short *) regs->pc));  in is_dsp_inst()
556 #define is_dsp_inst(regs)	(0)  argument
564 				   struct pt_regs regs)  in do_exception_error()  argument
568 	die_if_kernel("exception", &regs, ex);  in do_exception_error()