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android-kvm / linux / 02067dc96c6098b5489636ccf54db1c81d9bada9 / . / arch / sparc / lib / NG2copy_from_user.S
blob: e57bc514f538a941323eee1ee63c0cd2bd24fabe [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
David S. Millercf5adce2007-08-16 01:47:25 -0700[diff] [blame]2/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
3 *
4 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
5 */
6
David S. Millere93704e2016-10-24 20:46:44 -0700[diff] [blame]7#define EX_LD(x,y) \
David S. Millercf5adce2007-08-16 01:47:25 -0700[diff] [blame]898: x; \
David S. Millercf5adce2007-08-16 01:47:25 -0700[diff] [blame]9 .section __ex_table,"a";\
10 .align 4; \
David S. Millere93704e2016-10-24 20:46:44 -0700[diff] [blame]11 .word 98b, y; \
David S. Millercf5adce2007-08-16 01:47:25 -0700[diff] [blame]12 .text; \
13 .align 4;
14
David S. Millere93704e2016-10-24 20:46:44 -0700[diff] [blame]15#define EX_LD_FP(x,y) \
Rob Gardnera7c57242015-12-22 23:24:49 -0700[diff] [blame]1698: x; \
17 .section __ex_table,"a";\
18 .align 4; \
David S. Millere93704e2016-10-24 20:46:44 -0700[diff] [blame]19 .word 98b, y##_fp; \
Rob Gardnera7c57242015-12-22 23:24:49 -0700[diff] [blame]20 .text; \
21 .align 4;
22
David S. Millercf5adce2007-08-16 01:47:25 -0700[diff] [blame]23#ifndef ASI_AIUS
24#define ASI_AIUS 0x11
25#endif
26
27#ifndef ASI_BLK_AIUS_4V
28#define ASI_BLK_AIUS_4V 0x17
29#endif
30
31#define FUNC_NAME NG2copy_from_user
32#define LOAD(type,addr,dest) type##a [addr] %asi, dest
33#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest
34#define EX_RETVAL(x) 0
35
36#ifdef __KERNEL__
37#define PREAMBLE \
38 rd %asi, %g1; \
39 cmp %g1, ASI_AIUS; \
Al Viro31af2f32017-03-21 17:04:45 -0400[diff] [blame]40 bne,pn %icc, raw_copy_in_user; \
David S. Millercf5adce2007-08-16 01:47:25 -0700[diff] [blame]41 nop
42#endif
43
44#include "NG2memcpy.S"