608 int xmon(struct pt_regs *excp)  in xmon()  argument
612 	if (excp == NULL) {  in xmon()
614 		excp = &regs;  in xmon()
617 	return xmon_core(excp, 0);  in xmon()
851 cmds(struct pt_regs *excp)  in cmds()  argument
856 	xmon_regs = excp;  in cmds()
860 		xmon_show_stack(excp->gpr[1], excp->link, excp->nip);  in cmds()
908 			prregs(excp);	/* print regs */  in cmds()
911 			excprint(excp);  in cmds()
917 			backtrace(excp);  in cmds()
925 			if (do_step(excp))  in cmds()
1451 static void backtrace(struct pt_regs *excp)  in backtrace()  argument
1458 		xmon_show_stack(excp->gpr[1], excp->link, excp->nip);  in backtrace()