/* * linux/arch/unicore32/kernel/debug.S * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * *  32-bit debugging code */#include <linux/linkage.h>#include <asm/assembler.h> 		.text /* * Some debugging routines (useful if you've got MM problems and * printk isn't working).  For DEBUGGING ONLY!!!  Do not leave * references to these in a production kernel! */#include "debug-macro.S" /* * Useful debugging routines */ENTRY(printhex8)		mov	r1, #8		b	printhexENDPROC(printhex8) ENTRY(printhex4)		mov	r1, #4		b	printhexENDPROC(printhex4) ENTRY(printhex2)		mov	r1, #2printhex:	adr	r2, hexbuf		add	r3, r2, r1		mov	r1, #0		stb	r1, [r3]1:		and	r1, r0, #15		mov	r0, r0 >> #4		csub.a	r1, #10		beg	2f		add	r1, r1, #'0' - 'a' + 102:		add	r1, r1, #'a' - 10		stb.w	r1, [r3+], #-1		cxor.a	r3, r2		bne	1b		mov	r0, r2		b	printasciiENDPROC(printhex2) 		.ltorg ENTRY(printascii)		addruart r3		b	2f1:		waituart r2, r3		senduart r1, r3		busyuart r2, r3		cxor.a	r1, #'\n'		cmoveq	r1, #'\r'		beq	1b2:		cxor.a	r0, #0		beq	3f		ldb.w	r1, [r0]+, #1		cxor.a	r1, #0		bne	1b3:		mov	pc, lrENDPROC(printascii) ENTRY(printch)		addruart r3		mov	r1, r0		mov	r0, #0		b	1bENDPROC(printch) hexbuf:		.space 16