diff options
Diffstat (limited to 'arch/arm/lib/memchr.S')
-rw-r--r-- | arch/arm/lib/memchr.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/lib/memchr.S b/arch/arm/lib/memchr.S new file mode 100644 index 000000000000..ac34fe55d21a --- /dev/null +++ b/arch/arm/lib/memchr.S | |||
@@ -0,0 +1,25 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/lib/memchr.S | ||
3 | * | ||
4 | * Copyright (C) 1995-2000 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | * | ||
10 | * ASM optimised string functions | ||
11 | */ | ||
12 | #include <linux/linkage.h> | ||
13 | #include <asm/assembler.h> | ||
14 | |||
15 | .text | ||
16 | .align 5 | ||
17 | ENTRY(memchr) | ||
18 | 1: subs r2, r2, #1 | ||
19 | bmi 2f | ||
20 | ldrb r3, [r0], #1 | ||
21 | teq r3, r1 | ||
22 | bne 1b | ||
23 | sub r0, r0, #1 | ||
24 | 2: movne r0, #0 | ||
25 | RETINSTR(mov,pc,lr) | ||