491 static int gdbstub_single_step(struct pt_regs *regs)  in gdbstub_single_step()  argument
505 	pc = (u8 *) regs->pc;  in gdbstub_single_step()
506 	sp = (u8 *) (regs + 1);  in gdbstub_single_step()
535 			if (regs->pc != regs->lar &&  in gdbstub_single_step()
536 			    !__gdbstub_mark_bp((u8 *) regs->lar, 1))  in gdbstub_single_step()
571 			if (!__gdbstub_mark_bp((u8 *) regs->mdr, 0))  in gdbstub_single_step()
596 				case 0: x = regs->a0; break;  in gdbstub_single_step()
597 				case 1: x = regs->a1; break;  in gdbstub_single_step()
598 				case 2: x = regs->a2; break;  in gdbstub_single_step()
599 				case 3: x = regs->a3; break;  in gdbstub_single_step()
1177 static int gdbstub(struct pt_regs *regs, enum exception_code excep)  in gdbstub()  argument
1205 	if (regs->pc == (unsigned long) __gdbstub_pause)  in gdbstub()
1206 		regs->pc = (unsigned long) start_kernel;  in gdbstub()
1213 	if ((step_bp[0].addr && step_bp[0].addr == (u8 *) regs->pc) ||  in gdbstub()
1214 	    (step_bp[1].addr && step_bp[1].addr == (u8 *) regs->pc))  in gdbstub()
1227 	stack = (unsigned long *) regs->sp;  in gdbstub()
1231 	if (!user_mode(regs) && excep == EXCEP_SYSCALL15) {  in gdbstub()
1234 		bug = find_bug(regs->pc);  in gdbstub()
1238 				  "BUG() at address %lx\n", regs->pc);  in gdbstub()
1244 				  regs->pc, bug->file, bug->line);  in gdbstub()
1253 		regs->pc -= 2;  in gdbstub()
1255 	} else if (regs->pc == (unsigned long) __gdbstub_bug_trap) {  in gdbstub()
1256 		regs->pc = regs->mdr;  in gdbstub()
1330 	ptr = mem2hex(&regs->pc, ptr, 4, 0);  in gdbstub()
1338 	ptr = mem2hex(&regs->a3, ptr, 4, 0);  in gdbstub()
1344 	ssp = (unsigned long) (regs + 1);  in gdbstub()
1379 			ssp = (u32) (regs + 1);  in gdbstub()
1381 			ptr = mem2hex(&regs->d0, ptr, 4, 0);  in gdbstub()
1382 			ptr = mem2hex(&regs->d1, ptr, 4, 0);  in gdbstub()
1383 			ptr = mem2hex(&regs->d2, ptr, 4, 0);  in gdbstub()
1384 			ptr = mem2hex(&regs->d3, ptr, 4, 0);  in gdbstub()
1385 			ptr = mem2hex(&regs->a0, ptr, 4, 0);  in gdbstub()
1386 			ptr = mem2hex(&regs->a1, ptr, 4, 0);  in gdbstub()
1387 			ptr = mem2hex(&regs->a2, ptr, 4, 0);  in gdbstub()
1388 			ptr = mem2hex(&regs->a3, ptr, 4, 0);  in gdbstub()
1391 			ptr = mem2hex(&regs->pc, ptr, 4, 0);  in gdbstub()
1392 			ptr = mem2hex(&regs->mdr, ptr, 4, 0);  in gdbstub()
1393 			ptr = mem2hex(&regs->epsw, ptr, 4, 0);  in gdbstub()
1394 			ptr = mem2hex(&regs->lir, ptr, 4, 0);  in gdbstub()
1395 			ptr = mem2hex(&regs->lar, ptr, 4, 0);  in gdbstub()
1396 			ptr = mem2hex(&regs->mdrq, ptr, 4, 0);  in gdbstub()
1398 			ptr = mem2hex(&regs->e0, ptr, 4, 0);	/* 15 */  in gdbstub()
1399 			ptr = mem2hex(&regs->e1, ptr, 4, 0);  in gdbstub()
1400 			ptr = mem2hex(&regs->e2, ptr, 4, 0);  in gdbstub()
1401 			ptr = mem2hex(&regs->e3, ptr, 4, 0);  in gdbstub()
1402 			ptr = mem2hex(&regs->e4, ptr, 4, 0);  in gdbstub()
1403 			ptr = mem2hex(&regs->e5, ptr, 4, 0);  in gdbstub()
1404 			ptr = mem2hex(&regs->e6, ptr, 4, 0);  in gdbstub()
1405 			ptr = mem2hex(&regs->e7, ptr, 4, 0);  in gdbstub()
1408 			ptr = mem2hex(&regs, ptr, 4, 0);  in gdbstub()
1409 			ptr = mem2hex(&regs->sp, ptr, 4, 0);  in gdbstub()
1410 			ptr = mem2hex(&regs->mcrh, ptr, 4, 0);	/* 26 */  in gdbstub()
1411 			ptr = mem2hex(&regs->mcrl, ptr, 4, 0);  in gdbstub()
1412 			ptr = mem2hex(&regs->mcvf, ptr, 4, 0);  in gdbstub()
1431 			ptr = hex2mem(ptr, &regs->d0, 4, 0);  in gdbstub()
1432 			ptr = hex2mem(ptr, &regs->d1, 4, 0);  in gdbstub()
1433 			ptr = hex2mem(ptr, &regs->d2, 4, 0);  in gdbstub()
1434 			ptr = hex2mem(ptr, &regs->d3, 4, 0);  in gdbstub()
1435 			ptr = hex2mem(ptr, &regs->a0, 4, 0);  in gdbstub()
1436 			ptr = hex2mem(ptr, &regs->a1, 4, 0);  in gdbstub()
1437 			ptr = hex2mem(ptr, &regs->a2, 4, 0);  in gdbstub()
1438 			ptr = hex2mem(ptr, &regs->a3, 4, 0);  in gdbstub()
1441 			ptr = hex2mem(ptr, &regs->pc, 4, 0);  in gdbstub()
1442 			ptr = hex2mem(ptr, &regs->mdr, 4, 0);  in gdbstub()
1443 			ptr = hex2mem(ptr, &regs->epsw, 4, 0);  in gdbstub()
1444 			ptr = hex2mem(ptr, &regs->lir, 4, 0);  in gdbstub()
1445 			ptr = hex2mem(ptr, &regs->lar, 4, 0);  in gdbstub()
1446 			ptr = hex2mem(ptr, &regs->mdrq, 4, 0);  in gdbstub()
1448 			ptr = hex2mem(ptr, &regs->e0, 4, 0);	/* 15 */  in gdbstub()
1449 			ptr = hex2mem(ptr, &regs->e1, 4, 0);  in gdbstub()
1450 			ptr = hex2mem(ptr, &regs->e2, 4, 0);  in gdbstub()
1451 			ptr = hex2mem(ptr, &regs->e3, 4, 0);  in gdbstub()
1452 			ptr = hex2mem(ptr, &regs->e4, 4, 0);  in gdbstub()
1453 			ptr = hex2mem(ptr, &regs->e5, 4, 0);  in gdbstub()
1454 			ptr = hex2mem(ptr, &regs->e6, 4, 0);  in gdbstub()
1455 			ptr = hex2mem(ptr, &regs->e7, 4, 0);  in gdbstub()
1459 			ptr = hex2mem(ptr, &regs->sp, 4, 0);  in gdbstub()
1460 			ptr = hex2mem(ptr, &regs->mcrh, 4, 0);	/* 26 */  in gdbstub()
1461 			ptr = hex2mem(ptr, &regs->mcrl, 4, 0);  in gdbstub()
1462 			ptr = hex2mem(ptr, &regs->mcvf, 4, 0);  in gdbstub()
1535 				regs->pc = addr;  in gdbstub()
1560 			if (gdbstub_single_step(regs) < 0)  in gdbstub()
1684 int at_debugger_breakpoint(struct pt_regs *regs)  in at_debugger_breakpoint()  argument
1693 				  int signo, int si_code, struct pt_regs *regs)  in debugger_intercept()  argument
1708 			regs, excep, mdr, regs->pc);  in debugger_intercept()
1712 			regs->pc, regs->epsw, (unsigned long) &ret,  in debugger_intercept()
1713 			user_mode(regs) ? "User" : "Super");  in debugger_intercept()
1716 			regs->d0, regs->d1, regs->d2, regs->d3);  in debugger_intercept()
1719 			regs->a0, regs->a1, regs->a2, regs->a3);  in debugger_intercept()
1722 			regs->e0, regs->e1, regs->e2, regs->e3);  in debugger_intercept()
1725 			regs->e4, regs->e5, regs->e6, regs->e7);  in debugger_intercept()
1728 			regs->lar, regs->lir, regs->mdr, regs->sp);  in debugger_intercept()
1731 			regs->mcvf, regs->mcrl, regs->mcrh, regs->mdrq);  in debugger_intercept()
1739 	ret = gdbstub(regs, excep);  in debugger_intercept()
1749 asmlinkage void gdbstub_exception(struct pt_regs *regs,  in gdbstub_exception()  argument
1756 		      regs, excep, mdr);  in gdbstub_exception()
1758 	while ((unsigned long) regs == 0xffffffff) {}  in gdbstub_exception()
1761 	if (regs->pc == (unsigned) gdbstub_read_byte_guard) {  in gdbstub_exception()
1762 		regs->pc = (unsigned) gdbstub_read_byte_cont;  in gdbstub_exception()
1766 	if (regs->pc == (unsigned) gdbstub_read_word_guard) {  in gdbstub_exception()
1767 		regs->pc = (unsigned) gdbstub_read_word_cont;  in gdbstub_exception()
1771 	if (regs->pc == (unsigned) gdbstub_read_dword_guard) {  in gdbstub_exception()
1772 		regs->pc = (unsigned) gdbstub_read_dword_cont;  in gdbstub_exception()
1776 	if (regs->pc == (unsigned) gdbstub_write_byte_guard) {  in gdbstub_exception()
1777 		regs->pc = (unsigned) gdbstub_write_byte_cont;  in gdbstub_exception()
1781 	if (regs->pc == (unsigned) gdbstub_write_word_guard) {  in gdbstub_exception()
1782 		regs->pc = (unsigned) gdbstub_write_word_cont;  in gdbstub_exception()
1786 	if (regs->pc == (unsigned) gdbstub_write_dword_guard) {  in gdbstub_exception()
1787 		regs->pc = (unsigned) gdbstub_write_dword_cont;  in gdbstub_exception()
1795 	show_registers(regs);  in gdbstub_exception()
1802 	regs->d0 = -EFAULT;  in gdbstub_exception()
1906 asmlinkage void gdbstub_rx_irq(struct pt_regs *regs, enum exception_code excep)  in gdbstub_rx_irq()  argument
1918 			gdbstub(regs, excep);  in gdbstub_rx_irq()