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1da177e4 LT |
1 | /* insl_ns.S: input array of 4b words from device port without byte swapping |
2 | * | |
3 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | ||
13 | .text | |
14 | .p2align 4 | |
15 | ||
16 | ############################################################################### | |
17 | # | |
18 | # void __insl_ns(unsigned int port, void *buf, int n) | |
19 | # | |
20 | ############################################################################### | |
21 | .globl __insl_ns | |
22 | .type __insl_ns,@function | |
23 | __insl_ns: | |
24 | andicc.p gr9,#3,gr0,icc0 | |
25 | setlos #4,gr4 | |
26 | bne icc0,#0,__insl_ns_misaligned | |
27 | subi gr9,#4,gr9 | |
28 | 0: | |
29 | ldi.p @(gr8,#0),gr5 | |
30 | subicc gr10,#1,gr10,icc0 | |
31 | stu.p gr5,@(gr9,gr4) | |
32 | bhi icc0,#2,0b | |
33 | bralr | |
34 | ||
35 | __insl_ns_misaligned: | |
36 | subi.p gr9,#1,gr9 | |
37 | setlos #1,gr4 | |
38 | 0: | |
39 | ldi @(gr8,#0),gr5 | |
40 | ||
41 | srli gr5,#24,gr6 | |
42 | stbu.p gr6,@(gr9,gr4) | |
43 | srli gr5,#16,gr6 | |
44 | stbu.p gr6,@(gr9,gr4) | |
45 | srli gr5,#8,gr6 | |
46 | stbu.p gr6,@(gr9,gr4) | |
47 | subicc gr10,#1,gr10,icc0 | |
48 | stbu.p gr5,@(gr9,gr4) | |
49 | bhi icc0,#2,0b | |
50 | bralr | |
51 | ||
52 | .size __insl_ns, .-__insl_ns |