Merge in the pthread library. This is the linuxthreads library taken from

glibc 2.1.3 and ported to work with uClibc by Stefan Soucek and Erik Andersen
(me).  Stefan has hacked things up such that linuxthreads runs on MMU-less
systems (tested only on arm-nommu).  Erik cleaned things up and made it work
properly as a shared library.
 -Erik

1 files changed, 76 insertions, 0 deletions

diff --git a/libpthread/linuxthreads_db/td_thr_tsd.c b/libpthread/linuxthreads_db/td_thr_tsd.c
new file mode 100644
index 000000000..0453c981e
--- /dev/null
+++ b/libpthread/linuxthreads_db/td_thr_tsd.c
@@ -0,0 +1,76 @@
+/* Get a thread-specific data pointer for a thread.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "thread_dbP.h"
+
+
+td_err_e
+td_thr_tsd (const td_thrhandle_t *th, const thread_key_t tk, void **data)
+{
+  struct _pthread_descr_struct pds;
+  struct pthread_key_struct *keys = th->th_ta_p->keys;
+  struct pthread_key_struct key;
+  int pthread_keys_max = th->th_ta_p->pthread_keys_max;
+  int pthread_key_2ndlevel_size = th->th_ta_p->pthread_key_2ndlevel_size;
+  unsigned int idx1st;
+  unsigned int idx2nd;
+  void *p;
+
+  LOG (__FUNCTION__);
+
+  /* Get the thread descriptor.  */
+  if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
+		 sizeof (struct _pthread_descr_struct)) != PS_OK)
+    return TD_ERR;	/* XXX Other error value?  */
+
+  /* Check correct value of key.  */
+  if (tk >= pthread_keys_max)
+    return TD_BADKEY;
+
+  /* Get the key entry.  */
+  if (ps_pdread (th->th_ta_p->ph, keys, &key,
+		 sizeof (struct pthread_key_struct)) != PS_OK)
+    return TD_ERR;	/* XXX Other error value?  */
+
+  /* Fail if this key is not at all used.  */
+  if (! key.in_use)
+    return TD_BADKEY;
+
+  /* Compute the indeces.  */
+  idx1st = tk / pthread_key_2ndlevel_size;
+  idx2nd = tk % pthread_key_2ndlevel_size;
+
+  /* Check the pointer to the second level array.  */
+  if (pds.p_specific[idx1st] == NULL)
+    return TD_NOTSD;
+
+  /* Now get the real key.
+     XXX I don't know whether it's correct but there is currently no
+     easy way to determine whether a key was never set or the value
+     is NULL.  We return an error whenever the value is NULL.  */
+  if (ps_pdread (th->th_ta_p->ph, &pds.p_specific[idx1st][idx2nd], &p,
+		 sizeof (void *)) != PS_OK)
+    return TD_ERR;
+
+  if (p != NULL)
+    *data = p;
+
+  return p != NULL ? TD_OK : TD_NOTSD;
+}