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authorUlrich Drepper <drepper@redhat.com>2003-02-10 09:24:12 +0000
committerUlrich Drepper <drepper@redhat.com>2003-02-10 09:24:12 +0000
commita54e8d33d17f6197ac629ac86e3381643b802bec (patch)
treee876d442ce7cdb13eca46ff57278a81d0022bf61 /nptl/sysdeps/sh/pthread_spin_lock.c
parentf954eb1691045c888bfd8eab4ea4e25847f26c11 (diff)
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Update.
2003-02-08  kaz Kojima  <kkojima@rr.iij4u.or.jp>

	* sysdeps/sh/Makefile: New file.
	* sysdeps/sh/bits/atomic.h: New file.
	* sysdeps/sh/pthread_spin_init.c: New file.
	* sysdeps/sh/pthread_spin_lock.c: New file.
	* sysdeps/sh/pthread_spin_trylock.S: New file.
	* sysdeps/sh/pthread_spin_unlock.S: New file.
	* sysdeps/sh/pthreaddef.h: New file.
	* sysdeps/sh/tcb-offsets.sym: New file.
	* sysdeps/sh/td_ta_map_lwp2thr.c: New file.
	* sysdeps/sh/tls.h: New file.
	* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: New file.
	* sysdeps/unix/sysv/linux/sh/bits/semaphore.h: New file.
	* sysdeps/unix/sysv/linux/sh/createthread.c: New file.
	* sysdeps/unix/sysv/linux/sh/fork.c: New file.
	* sysdeps/unix/sysv/linux/sh/libc-lowlevellock.S: New file.
	* sysdeps/unix/sysv/linux/sh/libc-lowlevelmutex.S: New file.
	* sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h: New file.
	* sysdeps/unix/sysv/linux/sh/lowlevelcond.h: New file.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.S: New file.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.h: New file.
	* sysdeps/unix/sysv/linux/sh/lowlevelmutex.S: New file.
	* sysdeps/unix/sysv/linux/sh/lowlevelrwlock.h: New file.
	* sysdeps/unix/sysv/linux/sh/pt-initfini.c: New file.
	* sysdeps/unix/sysv/linux/sh/pt-vfork.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_cond_broadcast.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_cond_signal.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_cond_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_cond_wait.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_once.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_rdlock.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedrdlock.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S: New file.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S: New file.
	* sysdeps/unix/sysv/linux/sh/sem_post.S: New file.
	* sysdeps/unix/sysv/linux/sh/sem_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/sh/sem_trywait.S: New file.
	* sysdeps/unix/sysv/linux/sh/sem_wait.S: New file.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: New file.
Diffstat (limited to 'nptl/sysdeps/sh/pthread_spin_lock.c')
-rw-r--r--nptl/sysdeps/sh/pthread_spin_lock.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/nptl/sysdeps/sh/pthread_spin_lock.c b/nptl/sysdeps/sh/pthread_spin_lock.c
new file mode 100644
index 0000000000..e732641083
--- /dev/null
+++ b/nptl/sysdeps/sh/pthread_spin_lock.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 "pthreadP.h"
+
+int
+pthread_spin_lock (lock)
+     pthread_spinlock_t *lock;
+{
+  unsigned int val;
+
+  do
+    asm volatile ("tas.b @%1; movt %0"
+		  : "=&r" (val)
+		  : "r" (lock)
+		  : "memory");
+  while (val == 0);
+
+  return 0;
+}