18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* U1copy_to_user.S: UltraSparc-I/II/IIi/IIe optimized copy to userspace. 38c2ecf20Sopenharmony_ci * 48c2ecf20Sopenharmony_ci * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) 58c2ecf20Sopenharmony_ci */ 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci#define EX_ST(x,y) \ 88c2ecf20Sopenharmony_ci98: x; \ 98c2ecf20Sopenharmony_ci .section __ex_table,"a";\ 108c2ecf20Sopenharmony_ci .align 4; \ 118c2ecf20Sopenharmony_ci .word 98b, y; \ 128c2ecf20Sopenharmony_ci .text; \ 138c2ecf20Sopenharmony_ci .align 4; 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#define EX_ST_FP(x,y) \ 168c2ecf20Sopenharmony_ci98: x; \ 178c2ecf20Sopenharmony_ci .section __ex_table,"a";\ 188c2ecf20Sopenharmony_ci .align 4; \ 198c2ecf20Sopenharmony_ci .word 98b, y; \ 208c2ecf20Sopenharmony_ci .text; \ 218c2ecf20Sopenharmony_ci .align 4; 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci#define FUNC_NAME raw_copy_to_user 248c2ecf20Sopenharmony_ci#define STORE(type,src,addr) type##a src, [addr] ASI_AIUS 258c2ecf20Sopenharmony_ci#define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_AIUS 268c2ecf20Sopenharmony_ci#define EX_RETVAL(x) 0 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci /* Writing to %asi is _expensive_ so we hardcode it. 298c2ecf20Sopenharmony_ci * Reading %asi to check for KERNEL_DS is comparatively 308c2ecf20Sopenharmony_ci * cheap. 318c2ecf20Sopenharmony_ci */ 328c2ecf20Sopenharmony_ci#define PREAMBLE \ 338c2ecf20Sopenharmony_ci rd %asi, %g1; \ 348c2ecf20Sopenharmony_ci cmp %g1, ASI_AIUS; \ 358c2ecf20Sopenharmony_ci bne,pn %icc, raw_copy_in_user; \ 368c2ecf20Sopenharmony_ci nop; \ 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#include "U1memcpy.S" 39