diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:14:29 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:14:29 +0100 |
| commit | 5fdf7e5975a0b0f6a0370655612c5dca3fd6311b (patch) | |
| tree | 639c536e818c6ace974aa285ba94576df0353b01 /arch/sparc/lib/NGcopy_from_user.S | |
| parent | 7a51cffbd10886c0557677dd916c090097c691ef (diff) | |
| parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) | |
Merge branch 'linus' into tracing/kmemtrace
Conflicts:
mm/slub.c
Diffstat (limited to 'arch/sparc/lib/NGcopy_from_user.S')
| -rw-r--r-- | arch/sparc/lib/NGcopy_from_user.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/sparc/lib/NGcopy_from_user.S b/arch/sparc/lib/NGcopy_from_user.S new file mode 100644 index 000000000000..e7f433f71b42 --- /dev/null +++ b/arch/sparc/lib/NGcopy_from_user.S @@ -0,0 +1,37 @@ +/* NGcopy_from_user.S: Niagara optimized copy from userspace. + * + * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net) + */ + +#define EX_LD(x) \ +98: x; \ + .section .fixup; \ + .align 4; \ +99: wr %g0, ASI_AIUS, %asi;\ + ret; \ + restore %g0, 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) %g0 + +#ifdef __KERNEL__ +#define PREAMBLE \ + rd %asi, %g1; \ + cmp %g1, ASI_AIUS; \ + bne,pn %icc, memcpy_user_stub; \ + nop +#endif + +#include "NGmemcpy.S" |