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1 | /* |
2 | * linux/arch/arm/lib/memcpy.S | |
3 | * | |
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4 | * Author: Nicolas Pitre |
5 | * Created: Sep 28, 2005 | |
6 | * Copyright: MontaVista Software, Inc. | |
1da177e4 | 7 | * |
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8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
1da177e4 | 11 | */ |
75494230 | 12 | |
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13 | #include <linux/linkage.h> |
14 | #include <asm/assembler.h> | |
15 | ||
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16 | #define LDR1W_SHIFT 0 |
17 | #define STR1W_SHIFT 0 | |
18 | ||
75494230 | 19 | .macro ldr1w ptr reg abort |
8b592783 | 20 | W(ldr) \reg, [\ptr], #4 |
75494230 | 21 | .endm |
1da177e4 | 22 | |
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23 | .macro ldr4w ptr reg1 reg2 reg3 reg4 abort |
24 | ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4} | |
25 | .endm | |
1da177e4 | 26 | |
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27 | .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort |
28 | ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} | |
29 | .endm | |
1da177e4 | 30 | |
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31 | .macro ldr1b ptr reg cond=al abort |
32 | ldr\cond\()b \reg, [\ptr], #1 | |
33 | .endm | |
1da177e4 | 34 | |
75494230 | 35 | .macro str1w ptr reg abort |
8b592783 | 36 | W(str) \reg, [\ptr], #4 |
75494230 | 37 | .endm |
1da177e4 | 38 | |
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39 | .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort |
40 | stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} | |
41 | .endm | |
1da177e4 | 42 | |
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43 | .macro str1b ptr reg cond=al abort |
44 | str\cond\()b \reg, [\ptr], #1 | |
45 | .endm | |
1da177e4 | 46 | |
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47 | .macro enter reg1 reg2 |
48 | stmdb sp!, {r0, \reg1, \reg2} | |
49 | .endm | |
1da177e4 | 50 | |
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51 | .macro exit reg1 reg2 |
52 | ldmfd sp!, {r0, \reg1, \reg2} | |
53 | .endm | |
1da177e4 | 54 | |
75494230 | 55 | .text |
1da177e4 | 56 | |
75494230 | 57 | /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ |
1da177e4 | 58 | |
75494230 | 59 | ENTRY(memcpy) |
1da177e4 | 60 | |
75494230 | 61 | #include "copy_template.S" |
1da177e4 | 62 | |
93ed3970 | 63 | ENDPROC(memcpy) |