Commit | Line | Data |
---|---|---|
cf5adce1 DM |
1 | /* NG2copy_to_user.S: Niagara-2 optimized copy to userspace. |
2 | * | |
3 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) | |
4 | */ | |
5 | ||
6 | #define EX_ST(x) \ | |
7 | 98: x; \ | |
cf5adce1 DM |
8 | .section __ex_table,"a";\ |
9 | .align 4; \ | |
40bdac7d | 10 | .word 98b, __retl_one_asi;\ |
cf5adce1 DM |
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 | #ifndef ASI_BLK_INIT_QUAD_LDD_AIUS | |
23 | #define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23 | |
24 | #endif | |
25 | ||
26 | #define FUNC_NAME NG2copy_to_user | |
27 | #define STORE(type,src,addr) type##a src, [addr] ASI_AIUS | |
28 | #define STORE_ASI ASI_BLK_INIT_QUAD_LDD_AIUS | |
29 | #define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_AIUS_4V | |
30 | #define EX_RETVAL(x) 0 | |
31 | ||
32 | #ifdef __KERNEL__ | |
33 | /* Writing to %asi is _expensive_ so we hardcode it. | |
34 | * Reading %asi to check for KERNEL_DS is comparatively | |
35 | * cheap. | |
36 | */ | |
37 | #define PREAMBLE \ | |
38 | rd %asi, %g1; \ | |
39 | cmp %g1, ASI_AIUS; \ | |
aeb39876 | 40 | bne,pn %icc, ___copy_in_user; \ |
cf5adce1 DM |
41 | nop |
42 | #endif | |
43 | ||
44 | #include "NG2memcpy.S" |