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[karo-tx-linux.git] / arch / sparc / lib / NGcopy_from_user.S
1 /* NGcopy_from_user.S: Niagara optimized copy from userspace.
2  *
3  * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
4  */
5
6 #define EX_LD(x,y)              \
7 98:     x;                      \
8         .section __ex_table,"a";\
9         .align 4;               \
10         .word 98b, y;           \
11         .text;                  \
12         .align 4;
13
14 #ifndef ASI_AIUS
15 #define ASI_AIUS        0x11
16 #endif
17
18 #define FUNC_NAME               NGcopy_from_user
19 #define LOAD(type,addr,dest)    type##a [addr] ASI_AIUS, dest
20 #define LOAD_TWIN(addr_reg,dest0,dest1) \
21         ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
22 #define EX_RETVAL(x)            %g0
23
24 #ifdef __KERNEL__
25 #define PREAMBLE                                        \
26         rd              %asi, %g1;                      \
27         cmp             %g1, ASI_AIUS;                  \
28         bne,pn          %icc, ___copy_in_user;          \
29          nop
30 #endif
31
32 #include "NGmemcpy.S"