Blame sysdeps/sparc/sparc32/pthread_spin_lock.S
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/* Copyright (C) 2012-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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#include <sysdep.h>
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.text
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ENTRY(pthread_spin_lock)
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1: ldstub [%o0], %g1
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orcc %g1, 0x0, %g0
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bne,a 2f
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ldub [%o0], %g1
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retl
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mov 0, %o0
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2: orcc %g1, 0x0, %g0
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bne,a 2b
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ldub [%o0], %g1
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ba,a 1b
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END(pthread_spin_lock)
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