1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/*
* linux/arch/arm/lib/csumpartialcopy.S
*
* Copyright (C) 1995-1998 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
.text
/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum)
* Params : r0 = src, r1 = dst, r2 = len, r3 = checksum
* Returns : r0 = new checksum
*/
.macro save_regs
stmfd sp!, {r1, r4 - r8, lr}
.endm
.macro load_regs
ldmfd sp!, {r1, r4 - r8, pc}
.endm
.macro load1b, reg1
ldrb \reg1, [r0], #1
.endm
.macro load2b, reg1, reg2
ldrb \reg1, [r0], #1
ldrb \reg2, [r0], #1
.endm
.macro load1l, reg1
ldr \reg1, [r0], #4
.endm
.macro load2l, reg1, reg2
ldr \reg1, [r0], #4
ldr \reg2, [r0], #4
.endm
.macro load4l, reg1, reg2, reg3, reg4
ldmia r0!, {\reg1, \reg2, \reg3, \reg4}
.endm
#define FN_ENTRY ENTRY(csum_partial_copy_nocheck)
#define FN_EXIT ENDPROC(csum_partial_copy_nocheck)
#define FN_EXPORT EXPORT_SYMBOL(csum_partial_copy_nocheck)
#include "csumpartialcopygeneric.S"
|
