1/* SPDX-License-Identifier: GPL-2.0 */ 2/* GENcopy_to_user.S: Generic sparc64 copy to userspace. 3 * 4 * Copyright (C) 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 GENcopy_to_user 20#define STORE(type,src,addr) type##a src, [addr] ASI_AIUS 21#define EX_RETVAL(x) 0 22 23#ifdef __KERNEL__ 24 /* Writing to %asi is _expensive_ so we hardcode it. 25 * Reading %asi to check for KERNEL_DS is comparatively 26 * cheap. 27 */ 28#define PREAMBLE \ 29 rd %asi, %g1; \ 30 cmp %g1, ASI_AIUS; \ 31 bne,pn %icc, raw_copy_in_user; \ 32 nop 33#endif 34 35#include "GENmemcpy.S" 36