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688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
46 lines
1.2 KiB
ArmAsm
46 lines
1.2 KiB
ArmAsm
/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <rth@twiddle.net>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#define _ERRNO_H 1
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#include <bits/errno.h>
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.text
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.align 4
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.globl pthread_spin_trylock
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.ent pthread_spin_trylock
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pthread_spin_trylock:
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.frame $sp, 0, $26, 0
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.prologue 0
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0: ldl_l $1, 0($16)
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lda $2, 1
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lda $0, EBUSY
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bne $1, 1f
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stl_c $2, 0($16)
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beq $2, 2f
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mb
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lda $0, 0
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1: ret
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2: br 0b
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.end pthread_spin_trylock
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