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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Based on arch/arm/lib/strrchr.S
- *
- * Copyright (C) 1995-2000 Russell King
- * Copyright (C) 2013 ARM Ltd.
- */
- #include <linux/linkage.h>
- #include <asm/assembler.h>
- /*
- * Find the last occurrence of a character in a string.
- *
- * Parameters:
- * x0 - str
- * x1 - c
- * Returns:
- * x0 - address of last occurrence of 'c' or 0
- */
- SYM_FUNC_START(__pi_strrchr)
- mov x3, #0
- and w1, w1, #0xff
- 1: ldrb w2, [x0], #1
- cbz w2, 2f
- cmp w2, w1
- b.ne 1b
- sub x3, x0, #1
- b 1b
- 2: mov x0, x3
- ret
- SYM_FUNC_END(__pi_strrchr)
- SYM_FUNC_ALIAS_WEAK(strrchr, __pi_strrchr)
- EXPORT_SYMBOL_NOKASAN(strrchr)
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