| David S. Miller | 18cdae6 | 2008-12-09 04:09:07 -0800 | [diff] [blame] | 1 | /* Sparc optimized memcmp code. |
| 2 | * |
| 3 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 4 | * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net) |
| 5 | */ |
| 6 | |
| 7 | #include <linux/linkage.h> |
| 8 | #include <asm/asm.h> |
| Al Viro | d3867f04 | 2016-01-16 21:39:30 -0500 | [diff] [blame] | 9 | #include <asm/export.h> |
| David S. Miller | 18cdae6 | 2008-12-09 04:09:07 -0800 | [diff] [blame] | 10 | |
| 11 | .text |
| 12 | ENTRY(memcmp) |
| 13 | cmp %o2, 0 |
| 14 | 1: BRANCH32(be, pn, 2f) |
| 15 | nop |
| 16 | ldub [%o0], %g7 |
| 17 | ldub [%o1], %g3 |
| 18 | sub %o2, 1, %o2 |
| 19 | add %o0, 1, %o0 |
| 20 | add %o1, 1, %o1 |
| 21 | subcc %g7, %g3, %g3 |
| 22 | BRANCH32(be, pt, 1b) |
| 23 | cmp %o2, 0 |
| 24 | retl |
| 25 | mov %g3, %o0 |
| 26 | 2: retl |
| 27 | mov 0, %o0 |
| 28 | ENDPROC(memcmp) |
| Al Viro | d3867f04 | 2016-01-16 21:39:30 -0500 | [diff] [blame] | 29 | EXPORT_SYMBOL(memcmp) |