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Diffstat (limited to 'arch/blackfin/lib/ins.S')
-rw-r--r-- | arch/blackfin/lib/ins.S | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/blackfin/lib/ins.S b/arch/blackfin/lib/ins.S new file mode 100644 index 000000000000..730d2b427538 --- /dev/null +++ b/arch/blackfin/lib/ins.S | |||
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1 | /* | ||
2 | * File: arch/blackfin/lib/ins.S | ||
3 | * Based on: | ||
4 | * Author: Bas Vermeulen <bas@buyways.nl> | ||
5 | * | ||
6 | * Created: Tue Mar 22 15:27:24 CEST 2005 | ||
7 | * Description: Implementation of ins{bwl} for BlackFin processors using zero overhead loops. | ||
8 | * | ||
9 | * Modified: | ||
10 | * Copyright 2004-2006 Analog Devices Inc. | ||
11 | * Copyright (C) 2005 Bas Vermeulen, BuyWays BV <bas@buyways.nl> | ||
12 | * | ||
13 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or modify | ||
16 | * it under the terms of the GNU General Public License as published by | ||
17 | * the Free Software Foundation; either version 2 of the License, or | ||
18 | * (at your option) any later version. | ||
19 | * | ||
20 | * This program is distributed in the hope that it will be useful, | ||
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
23 | * GNU General Public License for more details. | ||
24 | * | ||
25 | * You should have received a copy of the GNU General Public License | ||
26 | * along with this program; if not, see the file COPYING, or write | ||
27 | * to the Free Software Foundation, Inc., | ||
28 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
29 | */ | ||
30 | |||
31 | #include <linux/linkage.h> | ||
32 | |||
33 | .align 2 | ||
34 | |||
35 | ENTRY(_insl) | ||
36 | P0 = R0; /* P0 = port */ | ||
37 | cli R3; | ||
38 | P1 = R1; /* P1 = address */ | ||
39 | P2 = R2; /* P2 = count */ | ||
40 | SSYNC; | ||
41 | LSETUP( .Llong_loop_s, .Llong_loop_e) LC0 = P2; | ||
42 | .Llong_loop_s: R0 = [P0]; | ||
43 | .Llong_loop_e: [P1++] = R0; | ||
44 | sti R3; | ||
45 | RTS; | ||
46 | |||
47 | ENTRY(_insw) | ||
48 | P0 = R0; /* P0 = port */ | ||
49 | cli R3; | ||
50 | P1 = R1; /* P1 = address */ | ||
51 | P2 = R2; /* P2 = count */ | ||
52 | SSYNC; | ||
53 | LSETUP( .Lword_loop_s, .Lword_loop_e) LC0 = P2; | ||
54 | .Lword_loop_s: R0 = W[P0]; | ||
55 | .Lword_loop_e: W[P1++] = R0; | ||
56 | sti R3; | ||
57 | RTS; | ||
58 | |||
59 | ENTRY(_insb) | ||
60 | P0 = R0; /* P0 = port */ | ||
61 | cli R3; | ||
62 | P1 = R1; /* P1 = address */ | ||
63 | P2 = R2; /* P2 = count */ | ||
64 | SSYNC; | ||
65 | LSETUP( .Lbyte_loop_s, .Lbyte_loop_e) LC0 = P2; | ||
66 | .Lbyte_loop_s: R0 = B[P0]; | ||
67 | .Lbyte_loop_e: B[P1++] = R0; | ||
68 | sti R3; | ||
69 | RTS; | ||