spi-topcliff-pch: supports a spi mode setup and bit order setup by IO control
[zen-stable.git] / arch / arm / lib / csumpartialcopy.S
blobd03fc71fc88c9d5167290ee0d2228f5efca820ec
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>
13                 .text
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  */
20                 .macro  save_regs
21                 stmfd   sp!, {r1, r4 - r8, lr}
22                 .endm
24                 .macro  load_regs
25                 ldmfd   sp!, {r1, r4 - r8, pc}
26                 .endm
28                 .macro  load1b, reg1
29                 ldrb    \reg1, [r0], #1
30                 .endm
32                 .macro  load2b, reg1, reg2
33                 ldrb    \reg1, [r0], #1
34                 ldrb    \reg2, [r0], #1
35                 .endm
37                 .macro  load1l, reg1
38                 ldr     \reg1, [r0], #4
39                 .endm
41                 .macro  load2l, reg1, reg2
42                 ldr     \reg1, [r0], #4
43                 ldr     \reg2, [r0], #4
44                 .endm
46                 .macro  load4l, reg1, reg2, reg3, reg4
47                 ldmia   r0!, {\reg1, \reg2, \reg3, \reg4}
48                 .endm
50 #define FN_ENTRY        ENTRY(csum_partial_copy_nocheck)
51 #define FN_EXIT         ENDPROC(csum_partial_copy_nocheck)
53 #include "csumpartialcopygeneric.S"