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68 lines
1.8 KiB
ArmAsm
68 lines
1.8 KiB
ArmAsm
/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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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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#include <shlib-compat.h>
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#include <pthread-errnos.h>
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#include <lowlevellock.h>
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.text
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.globl __new_sem_trywait
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.type __new_sem_trywait,@function
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.align 16
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__new_sem_trywait:
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movl 4(%esp), %ecx
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movl (%ecx), %eax
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2: testl %eax, %eax
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jz 1f
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leal -1(%eax), %edx
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LOCK
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cmpxchgl %edx, (%ecx)
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jne 2b
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xorl %eax, %eax
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ret
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1:
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#ifdef PIC
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SETUP_PIC_REG(cx)
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#else
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movl $3f, %ecx
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3:
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#endif
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addl $_GLOBAL_OFFSET_TABLE_, %ecx
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#ifdef NO_TLS_DIRECT_SEG_REFS
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movl errno@gotntpoff(%ecx), %edx
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addl %gs:0, %edx
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movl $EAGAIN, (%edx)
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#else
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movl errno@gotntpoff(%ecx), %edx
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movl $EAGAIN, %gs:(%edx)
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#endif
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orl $-1, %eax
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ret
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.size __new_sem_trywait,.-__new_sem_trywait
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versioned_symbol(libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1)
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#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
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.global __old_sem_trywait
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__old_sem_trywait = __new_sem_trywait
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compat_symbol(libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0)
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#endif
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