about summary refs log tree commit diff
path: root/sysdeps/x86_64/fpu/s_copysign.S
blob: 18f568f46f5291037126e9aaefd91ec56aaa9a56 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
/* copy sign, double version.
   Copyright (C) 2002-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Jaeger <aj@suse.de>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <machine/asm.h>

	.section .rodata.cst16,"aM",@progbits,16

	.align ALIGNARG(4)
	.type signmask,@object
signmask:
	.byte 0, 0, 0, 0, 0, 0, 0, 0x80
	.byte 0, 0, 0, 0, 0, 0, 0, 0
	ASM_SIZE_DIRECTIVE(signmask)
	.type othermask,@object
othermask:
	.byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
	.byte 0, 0, 0, 0, 0, 0, 0, 0
	ASM_SIZE_DIRECTIVE(othermask)

#ifdef PIC
#define MO(op) op##(%rip)
#else
#define MO(op) op
#endif

	.text
ENTRY(__copysign)
	andpd MO(othermask),%xmm0
	andpd MO(signmask),%xmm1
	orpd %xmm1,%xmm0
	ret
END (__copysign)

weak_alias (__copysign, copysign)