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| author | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-03-21 13:05:45 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-03-21 13:05:45 -0600 |
| commit | d04cdb64212eb5ae6a98026a97dda626e40e8e9a (patch) | |
| tree | b6a7dbb21ccfceb915844e9a330b3d3dfcaf3c5b /arch/sparc64/lib/NGcopy_from_user.S | |
| parent | 2f8600dff2b140096a7df781884e918a16aa90e0 (diff) | |
| parent | ec1248e70edc5cf7b485efcc7b41e44e10f422e5 (diff) | |
Merge ../linux-2.6
Diffstat (limited to 'arch/sparc64/lib/NGcopy_from_user.S')
| -rw-r--r-- | arch/sparc64/lib/NGcopy_from_user.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/sparc64/lib/NGcopy_from_user.S b/arch/sparc64/lib/NGcopy_from_user.S new file mode 100644 index 00000000000..2d93456f76d --- /dev/null +++ b/arch/sparc64/lib/NGcopy_from_user.S @@ -0,0 +1,37 @@ +/* NGcopy_from_user.S: Niagara optimized copy from userspace. + * + * Copyright (C) 2006 David S. Miller (davem@davemloft.net) + */ + +#define EX_LD(x) \ +98: x; \ + .section .fixup; \ + .align 4; \ +99: wr %g0, ASI_AIUS, %asi;\ + retl; \ + mov 1, %o0; \ + .section __ex_table,"a";\ + .align 4; \ + .word 98b, 99b; \ + .text; \ + .align 4; + +#ifndef ASI_AIUS +#define ASI_AIUS 0x11 +#endif + +#define FUNC_NAME NGcopy_from_user +#define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest +#define LOAD_TWIN(addr_reg,dest0,dest1) \ + ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0 +#define EX_RETVAL(x) 0 + +#ifdef __KERNEL__ +#define PREAMBLE \ + rd %asi, %g1; \ + cmp %g1, ASI_AIUS; \ + bne,pn %icc, memcpy_user_stub; \ + nop +#endif + +#include "NGmemcpy.S" |