| David S. Miller | 9019205 | 2012-09-27 14:26:31 -0700 | [diff] [blame] | 1 | /* NG4copy_from_user.S: Niagara-4 optimized copy from userspace. |
| David S. Miller | ae2c6ca | 2012-09-26 21:11:01 -0700 | [diff] [blame] | 2 | * |
| 3 | * Copyright (C) 2012 David S. Miller (davem@davemloft.net) |
| 4 | */ |
| 5 | |
| 6 | #define EX_LD(x) \ |
| 7 | 98: x; \ |
| 8 | .section __ex_table,"a";\ |
| 9 | .align 4; \ |
| 10 | .word 98b, __retl_one_asi;\ |
| 11 | .text; \ |
| 12 | .align 4; |
| 13 | |
| Rob Gardner | a7c5724 | 2015-12-22 23:24:49 -0700 | [diff] [blame] | 14 | #define EX_LD_FP(x) \ |
| 15 | 98: x; \ |
| 16 | .section __ex_table,"a";\ |
| 17 | .align 4; \ |
| 18 | .word 98b, __retl_one_asi_fp;\ |
| 19 | .text; \ |
| 20 | .align 4; |
| 21 | |
| David S. Miller | ae2c6ca | 2012-09-26 21:11:01 -0700 | [diff] [blame] | 22 | #ifndef ASI_AIUS |
| 23 | #define ASI_AIUS 0x11 |
| 24 | #endif |
| 25 | |
| 26 | #define FUNC_NAME NG4copy_from_user |
| 27 | #define LOAD(type,addr,dest) type##a [addr] %asi, dest |
| 28 | #define EX_RETVAL(x) 0 |
| 29 | |
| 30 | #ifdef __KERNEL__ |
| 31 | #define PREAMBLE \ |
| 32 | rd %asi, %g1; \ |
| 33 | cmp %g1, ASI_AIUS; \ |
| 34 | bne,pn %icc, ___copy_in_user; \ |
| 35 | nop |
| 36 | #endif |
| 37 | |
| 38 | #include "NG4memcpy.S" |