1/* 2 * linux/arch/arm/lib/memchr.S 3 * 4 * Copyright (C) 1995-2000 Russell King 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * ASM optimised string functions 11 */ 12#include <linux/linkage.h> 13#include <asm/assembler.h> 14#include <asm/export.h> 15 16 .text 17 .align 5 18ENTRY(memchr) 191: subs r2, r2, #1 20 bmi 2f 21 ldrb r3, [r0], #1 22 teq r3, r1 23 bne 1b 24 sub r0, r0, #1 252: movne r0, #0 26 ret lr 27ENDPROC(memchr) 28EXPORT_SYMBOL(memchr) 29