1/* SPDX-License-Identifier: GPL-2.0 */ 2/* NGcopy_to_user.S: Niagara optimized copy to userspace. 3 * 4 * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net) 5 */ 6 7#define EX_ST(x,y) \ 898: x; \ 9 .section __ex_table,"a";\ 10 .align 4; \ 11 .word 98b, y; \ 12 .text; \ 13 .align 4; 14 15#ifndef ASI_AIUS 16#define ASI_AIUS 0x11 17#endif 18 19#define FUNC_NAME NGcopy_to_user 20#define STORE(type,src,addr) type##a src, [addr] ASI_AIUS 21#define STORE_ASI ASI_BLK_INIT_QUAD_LDD_AIUS 22#define EX_RETVAL(x) %g0 23 24#ifdef __KERNEL__ 25 /* Writing to %asi is _expensive_ so we hardcode it. 26 * Reading %asi to check for KERNEL_DS is comparatively 27 * cheap. 28 */ 29#define PREAMBLE \ 30 rd %asi, %g1; \ 31 cmp %g1, ASI_AIUS; \ 32 bne,pn %icc, raw_copy_in_user; \ 33 nop 34#endif 35 36#include "NGmemcpy.S" 37