summaryrefslogtreecommitdiff
path: root/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S
blob: 3386afae9e583622bd75e61f82759826f7fff8b8 (plain)
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
/* Copyright (C) 2012 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   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; see the file COPYING.LIB.  If
   not, see <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

	.text
ENTRY (pthread_spin_lock)

	movi	a3, 0
	wsr 	a3, scompare1
	movi	a3, 1
1:	s32c1i	a3, a2, 0
	bnez	a3, 1b
	movi	a2, 0

	abi_ret

END (pthread_spin_lock)