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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
David S. Miller398d1082006-03-05 16:41:56 -08002/* NGcopy_from_user.S: Niagara optimized copy from userspace.
3 *
David S. Miller25e55662007-10-02 01:03:09 -07004 * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
David S. Miller398d1082006-03-05 16:41:56 -08005 */
6
David S. Miller7ae3aaf2016-10-24 19:32:12 -07007#define EX_LD(x,y) \
David S. Miller398d1082006-03-05 16:41:56 -0800898: x; \
David S. Miller398d1082006-03-05 16:41:56 -08009 .section __ex_table,"a";\
10 .align 4; \
David S. Miller7ae3aaf2016-10-24 19:32:12 -070011 .word 98b, y; \
David S. Miller398d1082006-03-05 16:41:56 -080012 .text; \
13 .align 4;
14
15#ifndef ASI_AIUS
16#define ASI_AIUS 0x11
17#endif
18
19#define FUNC_NAME NGcopy_from_user
20#define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest
21#define LOAD_TWIN(addr_reg,dest0,dest1) \
22 ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
David S. Miller25e55662007-10-02 01:03:09 -070023#define EX_RETVAL(x) %g0
David S. Miller398d1082006-03-05 16:41:56 -080024
25#ifdef __KERNEL__
26#define PREAMBLE \
27 rd %asi, %g1; \
28 cmp %g1, ASI_AIUS; \
Al Viro31af2f32017-03-21 17:04:45 -040029 bne,pn %icc, raw_copy_in_user; \
David S. Miller398d1082006-03-05 16:41:56 -080030 nop
31#endif
32
33#include "NGmemcpy.S"