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0001 /* SPDX-License-Identifier: GPL-2.0-only */ 0002 /* 0003 * linux/arch/arm/lib/strrchr.S 0004 * 0005 * Copyright (C) 1995-2000 Russell King 0006 * 0007 * ASM optimised string functions 0008 */ 0009 #include <linux/linkage.h> 0010 #include <asm/assembler.h> 0011 0012 .text 0013 .align 5 0014 ENTRY(strrchr) 0015 mov r3, #0 0016 1: ldrb r2, [r0], #1 0017 teq r2, r1 0018 subeq r3, r0, #1 0019 teq r2, #0 0020 bne 1b 0021 mov r0, r3 0022 ret lr 0023 ENDPROC(strrchr)
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