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1 | /* NG2copy_from_user.S: Niagara-2 optimized copy from userspace. |
2 | * | |
3 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) | |
4 | */ | |
5 | ||
6 | #define EX_LD(x) \ | |
7 | 98: x; \ | |
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8 | .section __ex_table,"a";\ |
9 | .align 4; \ | |
40bdac7d | 10 | .word 98b, __retl_one_asi;\ |
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11 | .text; \ |
12 | .align 4; | |
13 | ||
14 | #ifndef ASI_AIUS | |
15 | #define ASI_AIUS 0x11 | |
16 | #endif | |
17 | ||
18 | #ifndef ASI_BLK_AIUS_4V | |
19 | #define ASI_BLK_AIUS_4V 0x17 | |
20 | #endif | |
21 | ||
22 | #define FUNC_NAME NG2copy_from_user | |
23 | #define LOAD(type,addr,dest) type##a [addr] %asi, dest | |
24 | #define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest | |
25 | #define EX_RETVAL(x) 0 | |
26 | ||
27 | #ifdef __KERNEL__ | |
28 | #define PREAMBLE \ | |
29 | rd %asi, %g1; \ | |
30 | cmp %g1, ASI_AIUS; \ | |
aeb39876 | 31 | bne,pn %icc, ___copy_in_user; \ |
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32 | nop |
33 | #endif | |
34 | ||
35 | #include "NG2memcpy.S" |