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