projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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> | |
| 4dd1837d | 14 | #include <asm/export.h> |
| 1da177e4 LT |
15 | |
| 16 | .text | |
| 17 | .align 5 | |
| 18 | ENTRY(memchr) | |
| 19 | 1: subs r2, r2, #1 | |
| 20 | bmi 2f | |
| 21 | ldrb r3, [r0], #1 | |
| 22 | teq r3, r1 | |
| 23 | bne 1b | |
| 24 | sub r0, r0, #1 | |
| 25 | 2: movne r0, #0 | |
| 6ebbf2ce | 26 | ret lr |
| 93ed3970 | 27 | ENDPROC(memchr) |
| 4dd1837d | 28 | EXPORT_SYMBOL(memchr) |