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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/lib/memcpy.S | |
3 | * | |
75494230 NP |
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 | |
1da177e4 LT |
13 | #include <linux/linkage.h> |
14 | #include <asm/assembler.h> | |
279f487e | 15 | #include <asm/unwind.h> |
1da177e4 | 16 | |
8b592783 CM |
17 | #define LDR1W_SHIFT 0 |
18 | #define STR1W_SHIFT 0 | |
19 | ||
75494230 | 20 | .macro ldr1w ptr reg abort |
8b592783 | 21 | W(ldr) \reg, [\ptr], #4 |
75494230 | 22 | .endm |
1da177e4 | 23 | |
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24 | .macro ldr4w ptr reg1 reg2 reg3 reg4 abort |
25 | ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4} | |
26 | .endm | |
1da177e4 | 27 | |
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28 | .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort |
29 | ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} | |
30 | .endm | |
1da177e4 | 31 | |
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32 | .macro ldr1b ptr reg cond=al abort |
33 | ldr\cond\()b \reg, [\ptr], #1 | |
34 | .endm | |
1da177e4 | 35 | |
75494230 | 36 | .macro str1w ptr reg abort |
8b592783 | 37 | W(str) \reg, [\ptr], #4 |
75494230 | 38 | .endm |
1da177e4 | 39 | |
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40 | .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort |
41 | stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} | |
42 | .endm | |
1da177e4 | 43 | |
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44 | .macro str1b ptr reg cond=al abort |
45 | str\cond\()b \reg, [\ptr], #1 | |
46 | .endm | |
1da177e4 | 47 | |
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48 | .macro enter reg1 reg2 |
49 | stmdb sp!, {r0, \reg1, \reg2} | |
50 | .endm | |
1da177e4 | 51 | |
279f487e LY |
52 | .macro usave reg1 reg2 |
53 | UNWIND( .save {r0, \reg1, \reg2} ) | |
54 | .endm | |
55 | ||
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56 | .macro exit reg1 reg2 |
57 | ldmfd sp!, {r0, \reg1, \reg2} | |
58 | .endm | |
1da177e4 | 59 | |
75494230 | 60 | .text |
1da177e4 | 61 | |
75494230 | 62 | /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ |
1da177e4 | 63 | |
1bd46782 | 64 | ENTRY(mmiocpy) |
75494230 | 65 | ENTRY(memcpy) |
1da177e4 | 66 | |
75494230 | 67 | #include "copy_template.S" |
1da177e4 | 68 | |
93ed3970 | 69 | ENDPROC(memcpy) |
1bd46782 | 70 | ENDPROC(mmiocpy) |