| /* | |
| * 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 printhex | |
| ENDPROC(printhex8) | |
| ENTRY(printhex4) | |
| mov r1, #4 | |
| b printhex | |
| ENDPROC(printhex4) | |
| ENTRY(printhex2) | |
| mov r1, #2 | |
| printhex: 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' + 10 | |
| 2: add r1, r1, #'a' - 10 | |
| stb.w r1, [r3+], #-1 | |
| cxor.a r3, r2 | |
| bne 1b | |
| mov r0, r2 | |
| b printascii | |
| ENDPROC(printhex2) | |
| .ltorg | |
| ENTRY(printascii) | |
| addruart r3 | |
| b 2f | |
| 1: waituart r2, r3 | |
| senduart r1, r3 | |
| busyuart r2, r3 | |
| cxor.a r1, #'\n' | |
| cmoveq r1, #'\r' | |
| beq 1b | |
| 2: cxor.a r0, #0 | |
| beq 3f | |
| ldb.w r1, [r0]+, #1 | |
| cxor.a r1, #0 | |
| bne 1b | |
| 3: mov pc, lr | |
| ENDPROC(printascii) | |
| ENTRY(printch) | |
| addruart r3 | |
| mov r1, r0 | |
| mov r0, #0 | |
| b 1b | |
| ENDPROC(printch) | |
| hexbuf: .space 16 | |