| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* NG2copy_from_user.S: Niagara-2 optimized copy from userspace. |
| 3 | * |
| 4 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) |
| 5 | */ |
| 6 | |
| 7 | #define EX_LD(x,y) \ |
| 8 | 98: x; \ |
| 9 | .section __ex_table,"a";\ |
| 10 | .align 4; \ |
| 11 | .word 98b, y; \ |
| 12 | .text; \ |
| 13 | .align 4; |
| 14 | |
| 15 | #define EX_LD_FP(x,y) \ |
| 16 | 98: x; \ |
| 17 | .section __ex_table,"a";\ |
| 18 | .align 4; \ |
| 19 | .word 98b, y##_fp; \ |
| 20 | .text; \ |
| 21 | .align 4; |
| 22 | |
| 23 | #ifndef ASI_AIUS |
| 24 | #define ASI_AIUS 0x11 |
| 25 | #endif |
| 26 | |
| 27 | #ifndef ASI_BLK_AIUS_4V |
| 28 | #define ASI_BLK_AIUS_4V 0x17 |
| 29 | #endif |
| 30 | |
| 31 | #define FUNC_NAME NG2copy_from_user |
| 32 | #define LOAD(type,addr,dest) type##a [addr] %asi, dest |
| 33 | #define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest |
| 34 | #define EX_RETVAL(x) 0 |
| 35 | |
| 36 | #ifdef __KERNEL__ |
| 37 | #define PREAMBLE \ |
| 38 | rd %asi, %g1; \ |
| 39 | cmp %g1, ASI_AIUS; \ |
| 40 | bne,pn %icc, raw_copy_in_user; \ |
| 41 | nop |
| 42 | #endif |
| 43 | |
| 44 | #include "NG2memcpy.S" |