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, lr}
22		.endm
23
24		.macro	load_regs
25		ldmfd	sp!, {r1, r4 - r8, 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#define FN_EXIT		ENDPROC(csum_partial_copy_nocheck)
52
53#include "csumpartialcopygeneric.S"

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  linux/arch/arm/lib/csumpartialcopy.S
 4 *
 5 *  Copyright (C) 1995-1998 Russell King
 
 
 
 
 6 */
 7#include <linux/linkage.h>
 8#include <asm/assembler.h>
 9
10		.text
11
12/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len)
13 * Params  : r0 = src, r1 = dst, r2 = len
14 * Returns : r0 = new checksum
15 */
16
17		.macro	save_regs
18		stmfd	sp!, {r1, r4 - r8, lr}
19		.endm
20
21		.macro	load_regs
22		ldmfd	sp!, {r1, r4 - r8, pc}
23		.endm
24
25		.macro	load1b, reg1
26		ldrb	\reg1, [r0], #1
27		.endm
28
29		.macro	load2b, reg1, reg2
30		ldrb	\reg1, [r0], #1
31		ldrb	\reg2, [r0], #1
32		.endm
33
34		.macro	load1l, reg1
35		ldr	\reg1, [r0], #4
36		.endm
37
38		.macro	load2l, reg1, reg2
39		ldr	\reg1, [r0], #4
40		ldr	\reg2, [r0], #4
41		.endm
42
43		.macro	load4l, reg1, reg2, reg3, reg4
44		ldmia	r0!, {\reg1, \reg2, \reg3, \reg4}
45		.endm
46
47#define FN_ENTRY	ENTRY(csum_partial_copy_nocheck)
48#define FN_EXIT		ENDPROC(csum_partial_copy_nocheck)
49
50#include "csumpartialcopygeneric.S"