Merge branch 'master' of git://git.infradead.org/~dwmw2/solos-2.6
[linux-2.6] / arch / sparc / lib / U3copy_to_user.S
1 /* U3copy_to_user.S: UltraSparc-III optimized copy to userspace.
2  *
3  * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
4  */
5
6 #define EX_ST(x)                \
7 98:     x;                      \
8         .section __ex_table,"a";\
9         .align 4;               \
10         .word 98b, __retl_one;  \
11         .text;                  \
12         .align 4;
13
14 #define FUNC_NAME               U3copy_to_user
15 #define STORE(type,src,addr)    type##a src, [addr] ASI_AIUS
16 #define STORE_BLK(src,addr)     stda src, [addr] ASI_BLK_AIUS
17 #define EX_RETVAL(x)            0
18
19         /* Writing to %asi is _expensive_ so we hardcode it.
20          * Reading %asi to check for KERNEL_DS is comparatively
21          * cheap.
22          */
23 #define PREAMBLE                                        \
24         rd              %asi, %g1;                      \
25         cmp             %g1, ASI_AIUS;                  \
26         bne,pn          %icc, ___copy_in_user;          \
27          nop;                                           \
28
29 #include "U3memcpy.S"