123 void die_if_kernel (char *str, struct pt_regs *regs, long err);
125 static int emulate_ldh(struct pt_regs *regs, int toreg)  in emulate_ldh()  argument
127 	unsigned long saddr = regs->ior;  in emulate_ldh()
131 		regs->isr, regs->ior, toreg);  in emulate_ldh()
139 	: "0" (val), "r" (saddr), "r" (regs->isr)  in emulate_ldh()
145 		regs->gr[toreg] = val;  in emulate_ldh()
149 static int emulate_ldw(struct pt_regs *regs, int toreg)  in emulate_ldw()  argument
151 	unsigned long saddr = regs->ior;  in emulate_ldw()
155 		regs->isr, regs->ior, toreg);  in emulate_ldw()
167 	: "0" (val), "r" (saddr), "r" (regs->isr)  in emulate_ldw()
173 		regs->gr[toreg] = val;  in emulate_ldw()
178 static int emulate_ldd(struct pt_regs *regs, int toreg)  in emulate_ldd()  argument
180 	unsigned long saddr = regs->ior;  in emulate_ldd()
184 		regs->isr, regs->ior, toreg);  in emulate_ldd()
196 	: "0" (val), "r" (saddr), "r" (regs->isr)  in emulate_ldd()
202 		regs->gr[toreg] = val;  in emulate_ldd()
208 static int emulate_sth(struct pt_regs *regs, int frreg)  in emulate_sth()  argument
210 	unsigned long val = regs->gr[frreg];  in emulate_sth()
215 		regs->gr[frreg], regs->isr, regs->ior);  in emulate_sth()
223 	: "r" (val), "r" (regs->ior), "r" (regs->isr)  in emulate_sth()
228 static int emulate_stw(struct pt_regs *regs, int frreg)  in emulate_stw()  argument
230 	unsigned long val = regs->gr[frreg];  in emulate_stw()
235 		regs->gr[frreg], regs->isr, regs->ior);  in emulate_stw()
255 	: "r" (val), "r" (regs->ior), "r" (regs->isr)  in emulate_stw()
261 static int emulate_std(struct pt_regs *regs, int frreg)  in emulate_std()  argument
263 	unsigned long val = regs->gr[frreg];  in emulate_std()
268 		regs->gr[frreg], regs->isr, regs->ior);  in emulate_std()
288 	: "r" (val), "r" (regs->ior), "r" (regs->isr)  in emulate_std()
295 void handle_unaligned(struct pt_regs *regs)  in handle_unaligned()  argument
299 	unsigned long newbase = regs->gr[R1(regs->iir)];  in handle_unaligned()
309 	if (!user_mode(regs))  in handle_unaligned()
317 		fix = search_exception_table(regs->iaoq[0]);  in handle_unaligned()
324 				regs->gr[8] = -EFAULT;  in handle_unaligned()
326 				regs->gr[9] = 0;  in handle_unaligned()
328 			regs->iaoq[0] += ((fix->skip) & ~3);  in handle_unaligned()
329 			regs->iaoq[1] = regs->iaoq[0] + 4;  in handle_unaligned()
330 			regs->gr[0] &= ~PSW_B;  in handle_unaligned()
337 	if (user_mode(regs))  in handle_unaligned()
348 				current->comm, current->pid, regs->ior, regs->iaoq[0]);  in handle_unaligned()
351 			show_regs(regs);  in handle_unaligned()
360 	switch (MAJOR_OP(regs->iir))  in handle_unaligned()
365 		if (regs->iir&0x20)  in handle_unaligned()
368 			if (regs->iir&0x1000)		/* short loads */  in handle_unaligned()
369 				if (regs->iir&0x200)  in handle_unaligned()
370 					newbase += IM5_3(regs->iir);  in handle_unaligned()
372 					newbase += IM5_2(regs->iir);  in handle_unaligned()
373 			else if (regs->iir&0x2000)	/* scaled indexed */  in handle_unaligned()
376 				switch (regs->iir & OPCODE1_MASK)  in handle_unaligned()
386 				newbase += (R2(regs->iir)?regs->gr[R2(regs->iir)]:0)<<shift;  in handle_unaligned()
388 				newbase += (R2(regs->iir)?regs->gr[R2(regs->iir)]:0);  in handle_unaligned()
394 		newbase += IM14(regs->iir);  in handle_unaligned()
398 		if (regs->iir&8)  in handle_unaligned()
401 			newbase += IM14(regs->iir&~0xe);  in handle_unaligned()
407 		newbase += IM14(regs->iir&6);  in handle_unaligned()
411 		if (regs->iir&4)  in handle_unaligned()
414 			newbase += IM14(regs->iir&~4);  in handle_unaligned()
419 	if (regs->isr != regs->sr[7])  in handle_unaligned()
422 			regs->isr, regs->sr[7]);  in handle_unaligned()
430 	switch (regs->iir & OPCODE1_MASK)  in handle_unaligned()
434 		ret = emulate_ldh(regs, R3(regs->iir));  in handle_unaligned()
441 		ret = emulate_ldw(regs, R3(regs->iir));  in handle_unaligned()
445 		ret = emulate_sth(regs, R2(regs->iir));  in handle_unaligned()
450 		ret = emulate_stw(regs, R2(regs->iir));  in handle_unaligned()
458 		ret = emulate_ldd(regs, R3(regs->iir));  in handle_unaligned()
463 		ret = emulate_std(regs, R2(regs->iir));  in handle_unaligned()
475 	switch (regs->iir & OPCODE2_MASK)  in handle_unaligned()
479 		ret = emulate_ldd(regs, R2(regs->iir));  in handle_unaligned()
484 		ret = emulate_std(regs, R2(regs->iir));  in handle_unaligned()
488 	switch (regs->iir & OPCODE3_MASK)  in handle_unaligned()
492 		ret = emulate_ldw(regs, R2(regs->iir));  in handle_unaligned()
497 		ret = emulate_stw(regs, R2(regs->iir));  in handle_unaligned()
500 	switch (regs->iir & OPCODE4_MASK)  in handle_unaligned()
503 		ret = emulate_ldh(regs, R2(regs->iir));  in handle_unaligned()
507 		ret = emulate_ldw(regs, R2(regs->iir));  in handle_unaligned()
510 		ret = emulate_sth(regs, R2(regs->iir));  in handle_unaligned()
514 		ret = emulate_stw(regs, R2(regs->iir));  in handle_unaligned()
519 	if (modify && R1(regs->iir))  in handle_unaligned()
520 		regs->gr[R1(regs->iir)] = newbase;  in handle_unaligned()
524 		printk(KERN_CRIT "Not-handled unaligned insn 0x%08lx\n", regs->iir);  in handle_unaligned()
531 		die_if_kernel("Unaligned data reference", regs, 28);  in handle_unaligned()
537 		si.si_addr = (void *)regs->ior;  in handle_unaligned()
544 	regs->iaoq[0] = regs->iaoq[1];  in handle_unaligned()
545 	regs->iaoq[1] = regs->iaoq[0] + 4;  in handle_unaligned()
554 check_unaligned(struct pt_regs *regs)  in check_unaligned()  argument
561 	switch (regs->iir & OPCODE1_MASK) {  in check_unaligned()
579 		switch (regs->iir & OPCODE4_MASK) {  in check_unaligned()
594 	return (int)(regs->ior & align_mask);  in check_unaligned()