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csumpartialcopy.S
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
源码类别:
Linux/Unix编程
开发平台:
Unix_Linux
- /*
- * 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, fp, ip, lr, pc}
- .endm
- .macro load_regs,flags
- LOADREGS(flags,fp,{r1, r4 - r8, fp, sp, 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)
- #include "csumpartialcopygeneric.S"