| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Sparc optimized memcmp code. |
| * |
| * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net) |
| */ |
| |
| #include <linux/linkage.h> |
| #include <asm/asm.h> |
| #include <asm/export.h> |
| |
| .text |
| ENTRY(memcmp) |
| cmp %o2, 0 |
| 1: BRANCH32(be, pn, 2f) |
| nop |
| ldub [%o0], %g7 |
| ldub [%o1], %g3 |
| sub %o2, 1, %o2 |
| add %o0, 1, %o0 |
| add %o1, 1, %o1 |
| subcc %g7, %g3, %g3 |
| BRANCH32(be, pt, 1b) |
| cmp %o2, 0 |
| retl |
| mov %g3, %o0 |
| 2: retl |
| mov 0, %o0 |
| ENDPROC(memcmp) |
| EXPORT_SYMBOL(memcmp) |