--- /dev/null
+++ Libc/Libc-262/pthreads/pthread_tsd.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991  
+ *              All Rights Reserved 
+ *  
+ * Permission to use, copy, modify, and distribute this software and 
+ * its documentation for any purpose and without fee is hereby granted, 
+ * provided that the above copyright notice appears in all copies and 
+ * that both the copyright notice and this permission notice appear in 
+ * supporting documentation. 
+ *  
+ * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
+ * FOR A PARTICULAR PURPOSE. 
+ *  
+ * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 
+ * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 
+ * 
+ */
+/*
+ * MkLinux
+ */
+
+/*
+ * POSIX Pthread Library
+ *   Thread Specific Data support
+ */
+
+#include "pthread_internals.h"
+
+static struct
+{
+	int  created;    /* Set TRUE if 'create_key' used this slot */
+	void (*destructor)(void *);
+} _pthread_keys[_POSIX_THREAD_KEYS_MAX];
+static pthread_lock_t tds_lock = LOCK_INITIALIZER;
+
+/*
+ * Create a new key for thread specific data
+ */
+int       
+pthread_key_create(pthread_key_t *key,
+		   void (*destructor)(void *))
+{
+	int res, i;
+	LOCK(tds_lock);
+	res = ENOMEM;  /* No 'free' keys */
+	for (i = 0;  i < _POSIX_THREAD_KEYS_MAX;  i++)
+	{
+		if (_pthread_keys[i].created == FALSE)
+		{
+			_pthread_keys[i].created = TRUE;
+			_pthread_keys[i].destructor = destructor;
+			*key = i+1;
+			res = ESUCCESS;
+			break;
+		}
+	}
+	UNLOCK(tds_lock);
+        return (res);
+}
+
+/*
+ * Destroy a thread specific data key
+ */
+int       
+pthread_key_delete(pthread_key_t key)
+{
+	int res;
+	LOCK(tds_lock);
+	if ((key >= 1) && (key <= _POSIX_THREAD_KEYS_MAX))
+	{
+		if (_pthread_keys[key-1].created)
+		{
+			_pthread_keys[key-1].created = FALSE;
+			res = ESUCCESS;
+		} else
+		{
+			res = EINVAL;
+		}
+	} else
+	{ /* Invalid key */
+		res = EINVAL;
+	}
+	UNLOCK(tds_lock);
+	return (res);
+}
+
+/*
+ * Set the thread private value for a given key.
+ * We do not take the spinlock for this or pthread_getspecific.
+ * The assignment to self->tsd[] is thread-safe because we never
+ * refer to the tsd[] of a thread other than pthread_self().
+ * The reference to _pthread_keys[...].created could race with a
+ * pthread_key_delete() but in this case the behaviour is allowed
+ * to be undefined.
+ */
+int       
+pthread_setspecific(pthread_key_t key,
+		    const void *value)
+{
+	int res;
+	pthread_t self;
+	if ((key >= 1) && (key <= _POSIX_THREAD_KEYS_MAX))
+	{
+		if (_pthread_keys[key-1].created)
+		{
+			self = pthread_self();
+			self->tsd[key-1] = (void *) value;
+			res = ESUCCESS;
+		} else
+		{
+			res = EINVAL;
+		}
+	} else
+	{ /* Invalid key */
+		res = EINVAL;
+	}
+        return (res);
+}
+
+/*
+ * Fetch the thread private value for a given key.
+ * This is potentially a very heavily-used operation so we do only
+ * a minimum of checks.
+ */
+void *
+pthread_getspecific(pthread_key_t key)
+{
+	pthread_t self;
+	void *res;
+        if ((key >= 1) && (key <= _POSIX_THREAD_KEYS_MAX))
+	{
+		self = pthread_self();
+		res = self->tsd[key-1];
+	} else
+	{ /* Invalid key - no error, just NULL */
+		res = (void *)NULL;
+	}
+	return (res);
+}
+
+/*
+ * Clean up thread specific data as thread 'dies'
+ */
+void
+_pthread_tsd_cleanup(pthread_t self)
+{
+	int i, j;
+	void *param;
+	for (j = 0;  j < PTHREAD_DESTRUCTOR_ITERATIONS;  j++)
+	{
+		for (i = 0;  i < _POSIX_THREAD_KEYS_MAX;  i++)
+		{
+			if (_pthread_keys[i].created && (param = self->tsd[i]))
+			{
+				self->tsd[i] = (void *)NULL;
+				if (_pthread_keys[i].destructor)
+				{
+					(_pthread_keys[i].destructor)(param);
+				}
+			}
+		}
+	}
+}