projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 398d1083 DM |
1 | /* NGcopy_from_user.S: Niagara optimized copy from userspace. |
| 2 | * | |
| 3 | * Copyright (C) 2006 David S. Miller (davem@davemloft.net) | |
| 4 | */ | |
| 5 | ||
| 6 | #define EX_LD(x) \ | |
| 7 | 98: x; \ | |
| 8 | .section .fixup; \ | |
| 9 | .align 4; \ | |
| 10 | 99: wr %g0, ASI_AIUS, %asi;\ | |
| 11 | retl; \ | |
| 12 | mov 1, %o0; \ | |
| 13 | .section __ex_table,"a";\ | |
| 14 | .align 4; \ | |
| 15 | .word 98b, 99b; \ | |
| 16 | .text; \ | |
| 17 | .align 4; | |
| 18 | ||
| 19 | #ifndef ASI_AIUS | |
| 20 | #define ASI_AIUS 0x11 | |
| 21 | #endif | |
| 22 | ||
| 23 | #define FUNC_NAME NGcopy_from_user | |
| 24 | #define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest | |
| 25 | #define LOAD_TWIN(addr_reg,dest0,dest1) \ | |
| 26 | ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0 | |
| 27 | #define EX_RETVAL(x) 0 | |
| 28 | ||
| 29 | #ifdef __KERNEL__ | |
| 30 | #define PREAMBLE \ | |
| 31 | rd %asi, %g1; \ | |
| 32 | cmp %g1, ASI_AIUS; \ | |
| 33 | bne,pn %icc, memcpy_user_stub; \ | |
| 34 | nop | |
| 35 | #endif | |
| 36 | ||
| 37 | #include "NGmemcpy.S" |