Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6] / arch / sparc64 / lib / NGcopy_from_user.S
1 /* NGcopy_from_user.S: Niagara optimized copy from userspace.
2  *
3  * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
4  */
5
6 #define EX_LD(x)                \
7 98:     x;                      \
8         .section .fixup;        \
9         .align 4;               \
10 99:     wr      %g0, ASI_AIUS, %asi;\
11         retl;                   \
12          mov    1, %o0;         \
13         .section __ex_table,"a";\
14         .align 4;               \
15         .word 98b, 99b;         \
16         .text;                  \
17         .align 4;
18
19 #ifndef ASI_AIUS
20 #define ASI_AIUS        0x11
21 #endif
22
23 #define FUNC_NAME               NGcopy_from_user
24 #define LOAD(type,addr,dest)    type##a [addr] ASI_AIUS, dest
25 #define LOAD_TWIN(addr_reg,dest0,dest1) \
26         ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
27 #define EX_RETVAL(x)            0
28
29 #ifdef __KERNEL__
30 #define PREAMBLE                                        \
31         rd              %asi, %g1;                      \
32         cmp             %g1, ASI_AIUS;                  \
33         bne,pn          %icc, memcpy_user_stub;         \
34          nop
35 #endif
36
37 #include "NGmemcpy.S"