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diff --git a/lib/libthr/arch/alpha/include/pthread_md.h b/lib/libthr/arch/alpha/include/pthread_md.h
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+/*
+ * Copyright (c) 2003 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _PTHREAD_MD_H_
+#define _PTHREAD_MD_H_
+
+#include <stddef.h>
+#include <sys/types.h>
+
+#define DTV_OFFSET offsetof(struct tcb, tcb_dtv)
+
+/*
+ * Variant I tcb. The structure layout is fixed, don't blindly
+ * change it!
+ */
+struct tcb {
+ void *tcb_dtv;
+ struct pthread *tcb_thread;
+};
+
+#define _tp __builtin_thread_pointer()
+#define _tcb ((struct tcb *)_tp)
+
+struct tcb *_tcb_ctor(struct pthread *, int);
+void _tcb_dtor(struct tcb *);
+
+/* Called from the thread to set its private data. */
+static __inline void
+_tcb_set(struct tcb *tcb)
+{
+ __builtin_set_thread_pointer(tcb);
+}
+
+static __inline struct tcb *
+_tcb_get(void)
+{
+ return (_tcb);
+}
+
+extern struct pthread *_thr_initial;
+
+static __inline struct pthread *
+_get_curthread(void)
+{
+ if (_thr_initial)
+ return (_tcb->tcb_thread);
+ return (NULL);
+}
+
+#endif /* _PTHREAD_MD_H_ */
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