projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | |
| 22acc4e6 | 21 | stmfd sp!, {r1, r4 - r8, lr} |
| 1da177e4 LT |
22 | .endm |
| 23 | ||
| 90303b10 | 24 | .macro load_regs |
| 22acc4e6 | 25 | ldmfd sp!, {r1, r4 - r8, pc} |
| 1da177e4 LT |
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) | |
| 93ed3970 | 51 | #define FN_EXIT ENDPROC(csum_partial_copy_nocheck) |
| 1da177e4 LT |
52 | |
| 53 | #include "csumpartialcopygeneric.S" |