/* * linux/arch/arm/lib/memchr.S * * Copyright (C) 1995-2000 Russell King * * 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. * * ASM optimised string functions */ #include <linux/linkage.h> #include <asm/assembler.h> .text .align 5 ENTRY(memchr) 1: subs r2, r2, #1 bmi 2f ldrb r3, [r0], #1 teq r3, r1 bne 1b sub r0, r0, #1 2: movne r0, #0 mov pc, lr ENDPROC(memchr)