xref: /netbsd-src/external/lgpl3/gmp/dist/mpn/x86_64/copyi.asm (revision 2f62cc9c12bc202c40224f32c879f81443fee079)
1dnl  AMD64 mpn_copyi -- copy limb vector, incrementing.
2
3dnl  Copyright 2003, 2005, 2007, 2011, 2012 Free Software Foundation, Inc.
4
5dnl  This file is part of the GNU MP Library.
6dnl
7dnl  The GNU MP Library is free software; you can redistribute it and/or modify
8dnl  it under the terms of either:
9dnl
10dnl    * the GNU Lesser General Public License as published by the Free
11dnl      Software Foundation; either version 3 of the License, or (at your
12dnl      option) any later version.
13dnl
14dnl  or
15dnl
16dnl    * the GNU General Public License as published by the Free Software
17dnl      Foundation; either version 2 of the License, or (at your option) any
18dnl      later version.
19dnl
20dnl  or both in parallel, as here.
21dnl
22dnl  The GNU MP Library is distributed in the hope that it will be useful, but
23dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
24dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
25dnl  for more details.
26dnl
27dnl  You should have received copies of the GNU General Public License and the
28dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
29dnl  see https://www.gnu.org/licenses/.
30
31include(`../config.m4')
32
33C	     cycles/limb
34C AMD K8,K9	 1
35C AMD K10	 1
36C AMD bd1	 1.36
37C AMD bobcat	 1.71
38C Intel P4	 2-3
39C Intel core2	 1
40C Intel NHM	 1
41C Intel SBR	 1
42C Intel atom	 2
43C VIA nano	 2
44
45
46IFSTD(`define(`rp',`%rdi')')
47IFSTD(`define(`up',`%rsi')')
48IFSTD(`define(`n', `%rdx')')
49
50IFDOS(`define(`rp',`%rcx')')
51IFDOS(`define(`up',`%rdx')')
52IFDOS(`define(`n', `%r8')')
53
54ABI_SUPPORT(DOS64)
55ABI_SUPPORT(STD64)
56
57ASM_START()
58	TEXT
59	ALIGN(64)
60	.byte	0,0,0,0,0,0
61PROLOGUE(mpn_copyi)
62	lea	-8(rp), rp
63	sub	$4, n
64	jc	L(end)
65
66L(top):	mov	(up), %rax
67	mov	8(up), %r9
68	lea	32(rp), rp
69	mov	16(up), %r10
70	mov	24(up), %r11
71	lea	32(up), up
72	mov	%rax, -24(rp)
73	mov	%r9, -16(rp)
74	sub	$4, n
75	mov	%r10, -8(rp)
76	mov	%r11, (rp)
77	jnc	L(top)
78
79L(end):	shr	R32(n)
80	jnc	1f
81	mov	(up), %rax
82	mov	%rax, 8(rp)
83	lea	8(rp), rp
84	lea	8(up), up
851:	shr	R32(n)
86	jnc	1f
87	mov	(up), %rax
88	mov	8(up), %r9
89	mov	%rax, 8(rp)
90	mov	%r9, 16(rp)
911:	ret
92EPILOGUE()
93