Commit | Line | Data |
---|---|---|
6c70b6fc DM |
1 | /* GENcopy_to_user.S: Generic sparc64 copy to userspace. |
2 | * | |
3 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) | |
4 | */ | |
5 | ||
6 | #define EX_ST(x) \ | |
7 | 98: x; \ | |
8 | .section .fixup; \ | |
9 | .align 4; \ | |
10 | 99: retl; \ | |
11 | mov 1, %o0; \ | |
12 | .section __ex_table,"a";\ | |
13 | .align 4; \ | |
14 | .word 98b, 99b; \ | |
15 | .text; \ | |
16 | .align 4; | |
17 | ||
18 | #ifndef ASI_AIUS | |
19 | #define ASI_AIUS 0x11 | |
20 | #endif | |
21 | ||
22 | #define FUNC_NAME GENcopy_to_user | |
23 | #define STORE(type,src,addr) type##a src, [addr] ASI_AIUS | |
24 | #define EX_RETVAL(x) 0 | |
25 | ||
26 | #ifdef __KERNEL__ | |
27 | /* Writing to %asi is _expensive_ so we hardcode it. | |
28 | * Reading %asi to check for KERNEL_DS is comparatively | |
29 | * cheap. | |
30 | */ | |
31 | #define PREAMBLE \ | |
32 | rd %asi, %g1; \ | |
33 | cmp %g1, ASI_AIUS; \ | |
34 | bne,pn %icc, memcpy_user_stub; \ | |
35 | nop | |
36 | #endif | |
37 | ||
38 | #include "GENmemcpy.S" |