1/* 2 * linux/arch/arm/lib/strchr.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 15 .text 16 .align 5 17ENTRY(strchr) 18 and r1, r1, #0xff 191: ldrb r2, [r0], #1 20 teq r2, r1 21 teqne r2, #0 22 bne 1b 23 teq r2, r1 24 movne r0, #0 25 subeq r0, r0, #1 26 mov pc, lr 27ENDPROC(strchr) 28