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/export.h> |
9 | #include <linux/linkage.h> |
10 | #include <asm/asm.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) |
31 | |