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Diffstat (limited to 'arch/arm/lib/csumpartialcopy.S')
-rw-r--r-- | arch/arm/lib/csumpartialcopy.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/lib/csumpartialcopy.S b/arch/arm/lib/csumpartialcopy.S new file mode 100644 index 000000000000..990ee63b2465 --- /dev/null +++ b/arch/arm/lib/csumpartialcopy.S | |||
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1 | /* | ||
2 | * linux/arch/arm/lib/csumpartialcopy.S | ||
3 | * | ||
4 | * Copyright (C) 1995-1998 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 | .text | ||
14 | |||
15 | /* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum) | ||
16 | * Params : r0 = src, r1 = dst, r2 = len, r3 = checksum | ||
17 | * Returns : r0 = new checksum | ||
18 | */ | ||
19 | |||
20 | .macro save_regs | ||
21 | stmfd sp!, {r1, r4 - r8, fp, ip, lr, pc} | ||
22 | .endm | ||
23 | |||
24 | .macro load_regs,flags | ||
25 | LOADREGS(\flags,fp,{r1, r4 - r8, fp, sp, pc}) | ||
26 | .endm | ||
27 | |||
28 | .macro load1b, reg1 | ||
29 | ldrb \reg1, [r0], #1 | ||
30 | .endm | ||
31 | |||
32 | .macro load2b, reg1, reg2 | ||
33 | ldrb \reg1, [r0], #1 | ||
34 | ldrb \reg2, [r0], #1 | ||
35 | .endm | ||
36 | |||
37 | .macro load1l, reg1 | ||
38 | ldr \reg1, [r0], #4 | ||
39 | .endm | ||
40 | |||
41 | .macro load2l, reg1, reg2 | ||
42 | ldr \reg1, [r0], #4 | ||
43 | ldr \reg2, [r0], #4 | ||
44 | .endm | ||
45 | |||
46 | .macro load4l, reg1, reg2, reg3, reg4 | ||
47 | ldmia r0!, {\reg1, \reg2, \reg3, \reg4} | ||
48 | .endm | ||
49 | |||
50 | #define FN_ENTRY ENTRY(csum_partial_copy_nocheck) | ||
51 | |||
52 | #include "csumpartialcopygeneric.S" | ||