| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* Sparc optimized memcmp code. |
| 3 | * |
| 4 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 5 | * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net) |
| 6 | */ |
| 7 | |
| 8 | #include <linux/linkage.h> |
| 9 | #include <asm/asm.h> |
| 10 | #include <asm/export.h> |
| 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) |
| 30 | EXPORT_SYMBOL(memcmp) |