1*1da177e4SLinus Torvalds/* 2*1da177e4SLinus Torvalds * linux/arch/arm/lib/strchr.S 3*1da177e4SLinus Torvalds * 4*1da177e4SLinus Torvalds * Copyright (C) 1995-2000 Russell King 5*1da177e4SLinus Torvalds * 6*1da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 7*1da177e4SLinus Torvalds * it under the terms of the GNU General Public License version 2 as 8*1da177e4SLinus Torvalds * published by the Free Software Foundation. 9*1da177e4SLinus Torvalds * 10*1da177e4SLinus Torvalds * ASM optimised string functions 11*1da177e4SLinus Torvalds */ 12*1da177e4SLinus Torvalds#include <linux/linkage.h> 13*1da177e4SLinus Torvalds#include <asm/assembler.h> 14*1da177e4SLinus Torvalds 15*1da177e4SLinus Torvalds .text 16*1da177e4SLinus Torvalds .align 5 17*1da177e4SLinus TorvaldsENTRY(strchr) 18*1da177e4SLinus Torvalds and r1, r1, #0xff 19*1da177e4SLinus Torvalds1: ldrb r2, [r0], #1 20*1da177e4SLinus Torvalds teq r2, r1 21*1da177e4SLinus Torvalds teqne r2, #0 22*1da177e4SLinus Torvalds bne 1b 23*1da177e4SLinus Torvalds teq r2, r1 24*1da177e4SLinus Torvalds movne r0, #0 25*1da177e4SLinus Torvalds subeq r0, r0, #1 26*1da177e4SLinus Torvalds RETINSTR(mov,pc,lr) 27