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/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@twiddle.net>, 2003.
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
<https://www.gnu.org/licenses/>. */
.text
.align 4
.globl pthread_spin_lock
.ent pthread_spin_lock
pthread_spin_lock:
.frame $sp, 0, $26, 0
.prologue 0
0: ldl_l $1, 0($16)
lda $2, 1
lda $0, 0
bne $1, 1f
stl_c $2, 0($16)
beq $2, 1f
mb
ret
1: ldl $1, 0($16)
bne $1, 1b
unop
br 0b
.end pthread_spin_lock
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