diff options
Diffstat (limited to 'arch/sparc/lib/GENcopy_from_user.S')
-rw-r--r-- | arch/sparc/lib/GENcopy_from_user.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/sparc/lib/GENcopy_from_user.S b/arch/sparc/lib/GENcopy_from_user.S new file mode 100644 index 000000000000..2b9df99e87f9 --- /dev/null +++ b/arch/sparc/lib/GENcopy_from_user.S | |||
@@ -0,0 +1,34 @@ | |||
1 | /* GENcopy_from_user.S: Generic sparc64 copy from userspace. | ||
2 | * | ||
3 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) | ||
4 | */ | ||
5 | |||
6 | #define EX_LD(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_from_user | ||
23 | #define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest | ||
24 | #define EX_RETVAL(x) 0 | ||
25 | |||
26 | #ifdef __KERNEL__ | ||
27 | #define PREAMBLE \ | ||
28 | rd %asi, %g1; \ | ||
29 | cmp %g1, ASI_AIUS; \ | ||
30 | bne,pn %icc, memcpy_user_stub; \ | ||
31 | nop | ||
32 | #endif | ||
33 | |||
34 | #include "GENmemcpy.S" | ||