Merge master.kernel.org:/home/rmk/linux-2.6-serial
[pandora-kernel.git] / arch / sparc64 / 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 .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 #define FUNC_NAME               U3copy_to_user
19 #define STORE(type,src,addr)    type##a src, [addr] ASI_AIUS
20 #define STORE_BLK(src,addr)     stda src, [addr] ASI_BLK_AIUS
21 #define EX_RETVAL(x)            0
22
23         /* Writing to %asi is _expensive_ so we hardcode it.
24          * Reading %asi to check for KERNEL_DS is comparatively
25          * cheap.
26          */
27 #define PREAMBLE                                        \
28         rd              %asi, %g1;                      \
29         cmp             %g1, ASI_AIUS;                  \
30         bne,pn          %icc, memcpy_user_stub;         \
31          nop;                                           \
32
33 #include "U3memcpy.S"