projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 18cdae68 DM |
2 | /* Sparc optimized memcmp code. |
| 3 | * | |
| 4 | * Copyright (C) 1997 Jakub Jelinek ([email protected]) | |
| 5 | * Copyright (C) 2000, 2008 David S. Miller ([email protected]) | |
| 6 | */ | |
| 7 | ||
| 8 | #include <linux/linkage.h> | |
| 9 | #include <asm/asm.h> | |
| d3867f04 | 10 | #include <asm/export.h> |
| 18cdae68 DM |
11 | |
| 12 | .text | |
| 13 | ENTRY(memcmp) | |
| 14 | cmp %o2, 0 | |
| 15 | 1: BRANCH32(be, pn, 2f) | |
| 16 | nop | |
| 17 | ldub [%o0], %g7 | |
| 18 | ldub [%o1], %g3 | |
| 19 | sub %o2, 1, %o2 | |
| 20 | add %o0, 1, %o0 | |
| 21 | add %o1, 1, %o1 | |
| 22 | subcc %g7, %g3, %g3 | |
| 23 | BRANCH32(be, pt, 1b) | |
| 24 | cmp %o2, 0 | |
| 25 | retl | |
| 26 | mov %g3, %o0 | |
| 27 | 2: retl | |
| 28 | mov 0, %o0 | |
| 29 | ENDPROC(memcmp) | |
| d3867f04 | 30 | EXPORT_SYMBOL(memcmp) |