11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/arch/arm/lib/strchr.S 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1995-2000 Russell King 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License version 2 as 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * published by the Free Software Foundation. 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ASM optimised string functions 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/linkage.h> 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/assembler.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .text 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .align 5 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsENTRY(strchr) 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds and r1, r1, #0xff 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds1: ldrb r2, [r0], #1 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds teq r2, r1 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds teqne r2, #0 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bne 1b 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds teq r2, r1 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds movne r0, #0 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds subeq r0, r0, #1 267999d8d7a611bee902446939952859caf1367c25Russell King mov pc, lr 2793ed3970114983543bbebd195bef65db84444ea2Catalin MarinasENDPROC(strchr) 28