| /* $Id: memcmp.S,v 1.3 2000/03/23 07:51:08 davem Exp $ |
| * Sparc64 optimized memcmp code. |
| * |
| * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| * Copyright (C) 2000 David S. Miller (davem@redhat.com) |
| */ |
| |
| .text |
| .align 32 |
| .globl __memcmp, memcmp |
| __memcmp: |
| memcmp: |
| cmp %o2, 0 ! IEU1 Group |
| loop: be,pn %icc, ret_0 ! CTI |
| nop ! IEU0 |
| ldub [%o0], %g7 ! LSU Group |
| ldub [%o1], %g3 ! LSU Group |
| sub %o2, 1, %o2 ! IEU0 |
| add %o0, 1, %o0 ! IEU1 |
| add %o1, 1, %o1 ! IEU0 Group |
| subcc %g7, %g3, %g3 ! IEU1 Group |
| be,pt %icc, loop ! CTI |
| cmp %o2, 0 ! IEU1 Group |
| |
| ret_n0: retl |
| mov %g3, %o0 |
| ret_0: retl |
| mov 0, %o0 |