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 mov ip, sp 22 stmfd sp!, {r1, r4 - r8, fp, ip, lr, pc} 23 sub fp, ip, #4 24 .endm 25 26 .macro load_regs 27 ldmfd sp, {r1, r4 - r8, fp, sp, pc} 28 .endm 29 30 .macro load1b, reg1 31 ldrb \reg1, [r0], #1 32 .endm 33 34 .macro load2b, reg1, reg2 35 ldrb \reg1, [r0], #1 36 ldrb \reg2, [r0], #1 37 .endm 38 39 .macro load1l, reg1 40 ldr \reg1, [r0], #4 41 .endm 42 43 .macro load2l, reg1, reg2 44 ldr \reg1, [r0], #4 45 ldr \reg2, [r0], #4 46 .endm 47 48 .macro load4l, reg1, reg2, reg3, reg4 49 ldmia r0!, {\reg1, \reg2, \reg3, \reg4} 50 .endm 51 52#define FN_ENTRY ENTRY(csum_partial_copy_nocheck) 53 54#include "csumpartialcopygeneric.S" 55