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1 | /* memmove.S: Simple memmove implementation. |
2 | * |
3 | * Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com) |
4 | * Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz) |
5 | */ |
6 | |
7 | .text |
8 | .align 32 |
9 | .globl memmove |
10 | .type memmove,#function |
11 | memmove: /* o0=dst o1=src o2=len */ |
12 | mov %o0, %g1 |
13 | cmp %o0, %o1 |
14 | bleu,pt %xcc, memcpy |
15 | add %o1, %o2, %g7 |
16 | cmp %g7, %o0 |
17 | bleu,pt %xcc, memcpy |
18 | add %o0, %o2, %o5 |
19 | sub %g7, 1, %o1 |
20 | |
21 | sub %o5, 1, %o0 |
22 | 1: ldub [%o1], %g7 |
23 | subcc %o2, 1, %o2 |
24 | sub %o1, 1, %o1 |
25 | stb %g7, [%o0] |
26 | bne,pt %icc, 1b |
27 | sub %o0, 1, %o0 |
28 | |
29 | retl |
30 | mov %g1, %o0 |
31 | .size memmove, .-memmove |
32 |
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