1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun/* U1copy_from_user.S: UltraSparc-I/II/IIi/IIe optimized copy from userspace. 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun#define EX_LD(x,y) \ 8*4882a593Smuzhiyun98: x; \ 9*4882a593Smuzhiyun .section __ex_table,"a";\ 10*4882a593Smuzhiyun .align 4; \ 11*4882a593Smuzhiyun .word 98b, y; \ 12*4882a593Smuzhiyun .text; \ 13*4882a593Smuzhiyun .align 4; 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun#define EX_LD_FP(x,y) \ 16*4882a593Smuzhiyun98: x; \ 17*4882a593Smuzhiyun .section __ex_table,"a";\ 18*4882a593Smuzhiyun .align 4; \ 19*4882a593Smuzhiyun .word 98b, y; \ 20*4882a593Smuzhiyun .text; \ 21*4882a593Smuzhiyun .align 4; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun#define FUNC_NAME raw_copy_from_user 24*4882a593Smuzhiyun#define LOAD(type,addr,dest) type##a [addr] %asi, dest 25*4882a593Smuzhiyun#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS, dest 26*4882a593Smuzhiyun#define EX_RETVAL(x) 0 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* Writing to %asi is _expensive_ so we hardcode it. 29*4882a593Smuzhiyun * Reading %asi to check for KERNEL_DS is comparatively 30*4882a593Smuzhiyun * cheap. 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun#define PREAMBLE \ 33*4882a593Smuzhiyun rd %asi, %g1; \ 34*4882a593Smuzhiyun cmp %g1, ASI_AIUS; \ 35*4882a593Smuzhiyun bne,pn %icc, raw_copy_in_user; \ 36*4882a593Smuzhiyun nop; \ 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun#include "U1memcpy.S" 39