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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/lib/csumpartialcopy.S
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/*

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 *  linux/arch/arm/lib/csumpartialcopy.S

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 *

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 *  Copyright (C) 1995-1998 Russell King

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 *

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 * This program is free software; you can redistribute it and/or modify

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 * it under the terms of the GNU General Public License version 2 as

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 * published by the Free Software Foundation.

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 */

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#include <linux/linkage.h>

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#include <asm/assembler.h>

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		.text

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/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum)

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 * Params  : r0 = src, r1 = dst, r2 = len, r3 = checksum

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 * Returns : r0 = new checksum

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 */

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		.macro	save_regs

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		stmfd	sp!, {r1, r4 - r8, lr}

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		.endm

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		.macro	load_regs

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		ldmfd	sp!, {r1, r4 - r8, pc}

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		.endm

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		.macro	load1b, reg1

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		ldrb	\reg1, [r0], #1

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		.endm

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		.macro	load2b, reg1, reg2

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		ldrb	\reg1, [r0], #1

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		ldrb	\reg2, [r0], #1

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		.endm

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		.macro	load1l, reg1

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		ldr	\reg1, [r0], #4

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		.endm

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		.macro	load2l, reg1, reg2

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		ldr	\reg1, [r0], #4

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		ldr	\reg2, [r0], #4

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		.endm

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		.macro	load4l, reg1, reg2, reg3, reg4

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		ldmia	r0!, {\reg1, \reg2, \reg3, \reg4}

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		.endm

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#define FN_ENTRY	ENTRY(csum_partial_copy_nocheck)

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#define FN_EXIT		ENDPROC(csum_partial_copy_nocheck)

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#include "csumpartialcopygeneric.S"

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