| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: memcmp.S,v 1.3 2000/03/23 07:51:08 davem Exp $ |
| 2 | * Sparc64 optimized memcmp code. |
| 3 | * |
| 4 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 5 | * Copyright (C) 2000 David S. Miller (davem@redhat.com) |
| 6 | */ |
| 7 | |
| 8 | .text |
| 9 | .align 32 |
| 10 | .globl __memcmp, memcmp |
| 11 | __memcmp: |
| 12 | memcmp: |
| 13 | cmp %o2, 0 ! IEU1 Group |
| 14 | loop: be,pn %icc, ret_0 ! CTI |
| 15 | nop ! IEU0 |
| 16 | ldub [%o0], %g7 ! LSU Group |
| 17 | ldub [%o1], %g3 ! LSU Group |
| 18 | sub %o2, 1, %o2 ! IEU0 |
| 19 | add %o0, 1, %o0 ! IEU1 |
| 20 | add %o1, 1, %o1 ! IEU0 Group |
| 21 | subcc %g7, %g3, %g3 ! IEU1 Group |
| 22 | be,pt %icc, loop ! CTI |
| 23 | cmp %o2, 0 ! IEU1 Group |
| 24 | |
| 25 | ret_n0: retl |
| 26 | mov %g3, %o0 |
| 27 | ret_0: retl |
| 28 | mov 0, %o0 |