diff options
Diffstat (limited to 'arch/arm/lib/memchr.S')
| -rw-r--r-- | arch/arm/lib/memchr.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/lib/memchr.S b/arch/arm/lib/memchr.S new file mode 100644 index 0000000000..95bedafd03 --- /dev/null +++ b/arch/arm/lib/memchr.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/arch/arm/lib/memchr.S + * + * Copyright (C) 1995-2000 Russell King + * + * ASM optimised string functions + */ +#include <linux/linkage.h> +#include <asm/assembler.h> + + .text + .align 5 +ENTRY(memchr) +1: subs r2, r2, #1 + bmi 2f + ldrb r3, [r0], #1 + teq r3, r1 + bne 1b + sub r0, r0, #1 +2: movne r0, #0 + ret lr +ENDPROC(memchr) |