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author | Ulrich Drepper <drepper@redhat.com> | 2003-08-31 18:10:47 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2003-08-31 18:10:47 +0000 |
commit | cd2fbe58e617407e79b64c68cef34224803aa910 (patch) | |
tree | b07a2d7ac749cf125426c8deb41668deeaf6d2c8 /nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c | |
parent | b5bc52efe77e9f0deeb2ee141ea066ab18c927da (diff) | |
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Update.
2003-08-31 Ulrich Drepper <drepper@redhat.com>
* sysdeps/x86_64/bsd-_setjmp.S: Use HIDDEN_JUMPTARGET.
* include/setjmp.h: Add libc_hidden_proto for __sigsetjmp.
(CFLAGS-clnt_perr.c): Likewise.
Diffstat (limited to 'nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c')
-rw-r--r-- | nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c b/nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c new file mode 100644 index 0000000000..2bda809dac --- /dev/null +++ b/nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c @@ -0,0 +1,34 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include "pthreadP.h" + +int +pthread_spin_trylock (pthread_spinlock_t *lock) +{ + int res; + __asm __volatile + ("ldstub [%1], %0\n" + "membar #StoreLoad | #StoreStore" + : "=r" (res) + : "r" (lock) + : "memory"); + return res == 0 ? 0 : EBUSY; +} |