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| author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 14:10:25 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 20:17:19 +0300 |
| commit | 478b8fecda511942404ac232897a718cecd13e48 (patch) | |
| tree | e022fce8ca92f93a000e1cd686255f0b126e9fd5 /arch/sparc/lib/U3copy_to_user.S | |
| parent | 18269c0fd4db9bec2668f895f21d742486ccb90f (diff) | |
| download | linux-478b8fecda511942404ac232897a718cecd13e48.tar.xz | |
sparc,sparc64: unify lib/
o Renamed files in sparc64 to <name>_64.S when identical
to sparc32 files.
o iomap.c were equal for sparc32 and sparc64
o adjusted sparc/Makefile now we have only one lib/
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib/U3copy_to_user.S')
| -rw-r--r-- | arch/sparc/lib/U3copy_to_user.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/lib/U3copy_to_user.S b/arch/sparc/lib/U3copy_to_user.S new file mode 100644 index 000000000000..2334f111bb0c --- /dev/null +++ b/arch/sparc/lib/U3copy_to_user.S @@ -0,0 +1,33 @@ +/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace. + * + * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) + */ + +#define EX_ST(x) \ +98: x; \ + .section .fixup; \ + .align 4; \ +99: retl; \ + mov 1, %o0; \ + .section __ex_table,"a";\ + .align 4; \ + .word 98b, 99b; \ + .text; \ + .align 4; + +#define FUNC_NAME U3copy_to_user +#define STORE(type,src,addr) type##a src, [addr] ASI_AIUS +#define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_AIUS +#define EX_RETVAL(x) 0 + + /* Writing to %asi is _expensive_ so we hardcode it. + * Reading %asi to check for KERNEL_DS is comparatively + * cheap. + */ +#define PREAMBLE \ + rd %asi, %g1; \ + cmp %g1, ASI_AIUS; \ + bne,pn %icc, memcpy_user_stub; \ + nop; \ + +#include "U3memcpy.S" |