| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* NGcopy_to_user.S: Niagara optimized copy to userspace. | |
| * | |
| * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net) | |
| */ | |
| #define EX_ST(x,y) \ | |
| 98: x; \ | |
| .section __ex_table,"a";\ | |
| .align 4; \ | |
| .word 98b, y; \ | |
| .text; \ | |
| .align 4; | |
| #ifndef ASI_AIUS | |
| #define ASI_AIUS 0x11 | |
| #endif | |
| #define FUNC_NAME NGcopy_to_user | |
| #define STORE(type,src,addr) type##a src, [addr] ASI_AIUS | |
| #define STORE_ASI ASI_BLK_INIT_QUAD_LDD_AIUS | |
| #define EX_RETVAL(x) %g0 | |
| #ifdef __KERNEL__ | |
| /* Writing to %asi is _expensive_ so we hardcode it. | |
| * Reading %asi to check for KERNEL_DS is comparatively | |
| * cheap. | |
| */ | |
| #define PREAMBLE \ | |
| rd %asi, %g1; \ | |
| cmp %g1, ASI_AIUS; \ | |
| bne,pn %icc, raw_copy_in_user; \ | |
| nop | |
| #endif | |
| #include "NGmemcpy.S" |