diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/lib/io-writesl.S |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/lib/io-writesl.S')
-rw-r--r-- | arch/arm/lib/io-writesl.S | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/lib/io-writesl.S b/arch/arm/lib/io-writesl.S new file mode 100644 index 000000000000..f8f14dd227ca --- /dev/null +++ b/arch/arm/lib/io-writesl.S | |||
@@ -0,0 +1,66 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/lib/io-writesl.S | ||
3 | * | ||
4 | * Copyright (C) 1995-2000 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | */ | ||
10 | #include <linux/linkage.h> | ||
11 | #include <asm/assembler.h> | ||
12 | |||
13 | ENTRY(__raw_writesl) | ||
14 | teq r2, #0 @ do we have to check for the zero len? | ||
15 | moveq pc, lr | ||
16 | ands ip, r1, #3 | ||
17 | bne 3f | ||
18 | |||
19 | subs r2, r2, #4 | ||
20 | bmi 2f | ||
21 | stmfd sp!, {r4, lr} | ||
22 | 1: ldmia r1!, {r3, r4, ip, lr} | ||
23 | subs r2, r2, #4 | ||
24 | str r3, [r0, #0] | ||
25 | str r4, [r0, #0] | ||
26 | str ip, [r0, #0] | ||
27 | str lr, [r0, #0] | ||
28 | bpl 1b | ||
29 | ldmfd sp!, {r4, lr} | ||
30 | 2: movs r2, r2, lsl #31 | ||
31 | ldmcsia r1!, {r3, ip} | ||
32 | strcs r3, [r0, #0] | ||
33 | ldrne r3, [r1, #0] | ||
34 | strcs ip, [r0, #0] | ||
35 | strne r3, [r0, #0] | ||
36 | mov pc, lr | ||
37 | |||
38 | 3: bic r1, r1, #3 | ||
39 | ldr r3, [r1], #4 | ||
40 | cmp ip, #2 | ||
41 | blt 5f | ||
42 | bgt 6f | ||
43 | |||
44 | 4: mov ip, r3, pull #16 | ||
45 | ldr r3, [r1], #4 | ||
46 | subs r2, r2, #1 | ||
47 | orr ip, ip, r3, push #16 | ||
48 | str ip, [r0] | ||
49 | bne 4b | ||
50 | mov pc, lr | ||
51 | |||
52 | 5: mov ip, r3, pull #8 | ||
53 | ldr r3, [r1], #4 | ||
54 | subs r2, r2, #1 | ||
55 | orr ip, ip, r3, push #24 | ||
56 | str ip, [r0] | ||
57 | bne 5b | ||
58 | mov pc, lr | ||
59 | |||
60 | 6: mov ip, r3, pull #24 | ||
61 | ldr r3, [r1], #4 | ||
62 | subs r2, r2, #1 | ||
63 | orr ip, ip, r3, push #8 | ||
64 | str ip, [r0] | ||
65 | bne 6b | ||
66 | mov pc, lr | ||