734 int xmon(struct pt_regs *excp)  in xmon()  argument
738 	if (excp == NULL) {  in xmon()
740 		excp = &regs;  in xmon()
743 	return xmon_core(excp, 0);  in xmon()
1040 cmds(struct pt_regs *excp)  in cmds()  argument
1045 	xmon_regs = excp;  in cmds()
1047 	xmon_show_stack(excp->gpr[1], excp->link, excp->nip);  in cmds()
1098 			prregs(excp);	/* print regs */  in cmds()
1101 			excprint(excp);  in cmds()
1107 			backtrace(excp);  in cmds()
1115 			if (do_step(excp))  in cmds()
1720 static void backtrace(struct pt_regs *excp)  in backtrace()  argument
1727 		xmon_show_stack(excp->gpr[1], excp->link, excp->nip);  in backtrace()