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, 154 insertions, 0 deletions

diff --git a/libpthread/linuxthreads_db/td_ta_new.c b/libpthread/linuxthreads_db/td_ta_new.c
new file mode 100644
index 000000000..32b9b04c9
--- /dev/null
+++ b/libpthread/linuxthreads_db/td_ta_new.c
@@ -0,0 +1,154 @@
+/* Attach to target process.
+   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 <stddef.h>
+#include <stdlib.h>
+//#include <gnu/lib-names.h>
+
+#include "thread_dbP.h"
+
+
+/* Datatype for the list of known thread agents.  Normally there will
+   be exactly one so we don't spend much though on making it fast.  */
+struct agent_list *__td_agent_list;
+
+
+td_err_e
+td_ta_new (struct ps_prochandle *ps, td_thragent_t **ta)
+{
+  psaddr_t addr;
+  struct agent_list *elemp;
+
+  LOG (__FUNCTION__);
+
+  /* Get the global event mask.  This is one of the variables which
+     are new in the thread library to enable debugging.  If it is
+     not available we cannot debug.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__pthread_threads_events", &addr) != PS_OK)
+    return TD_NOLIBTHREAD;
+
+  /* Fill in the appropriate information.  */
+  *ta = (td_thragent_t *) malloc (sizeof (td_thragent_t));
+  if (*ta == NULL)
+    return TD_MALLOC;
+
+  /* Store the proc handle which we will pass to the callback functions
+     back into the debugger.  */
+  (*ta)->ph = ps;
+
+  /* Remember the address.  */
+  (*ta)->pthread_threads_eventsp = (td_thr_events_t *) addr;
+
+  /* Get the pointer to the variable pointing to the thread descriptor
+     with the last event.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__pthread_last_event",
+			 &(*ta)->pthread_last_event) != PS_OK)
+    {
+    free_return:
+      free (*ta);
+      return TD_ERR;
+    }
+
+  /* Get the pointer to the variable containing the number of active
+     threads.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__pthread_handles_num",
+			 &(*ta)->pthread_handles_num) != PS_OK)
+    goto free_return;
+
+  /* See whether the library contains the necessary symbols.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO, "__pthread_handles",
+		         &addr) != PS_OK)
+    goto free_return;
+
+  (*ta)->handles = (struct pthread_handle_struct *) addr;
+
+
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO, "pthread_keys",
+		         &addr) != PS_OK)
+    goto free_return;
+
+  /* Cast to the right type.  */
+  (*ta)->keys = (struct pthread_key_struct *) addr;
+
+  /* Find out about the maximum number of threads.  Old implementations
+     don't provide this information.  In this case we assume that the
+     debug  library is compiled with the same values.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__linuxthreads_pthread_threads_max", &addr) != PS_OK)
+    (*ta)->pthread_threads_max = PTHREAD_THREADS_MAX;
+  else
+    {
+      if (ps_pdread (ps, addr, &(*ta)->pthread_threads_max, sizeof (int))
+	  != PS_OK)
+	goto free_return;
+    }
+
+  /* Similar for the maximum number of thread local data keys.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__linuxthreads_pthread_keys_max", &addr) != PS_OK)
+    (*ta)->pthread_keys_max = PTHREAD_KEYS_MAX;
+  else
+    {
+      if (ps_pdread (ps, addr, &(*ta)->pthread_keys_max, sizeof (int))
+	  != PS_OK)
+	goto free_return;
+    }
+
+  /* And for the size of the second level arrays for the keys.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__linuxthreads_pthread_sizeof_descr", &addr)
+      != PS_OK)
+    (*ta)->sizeof_descr = sizeof (struct _pthread_descr_struct);
+  else
+    {
+      if (ps_pdread (ps, addr, &(*ta)->sizeof_descr, sizeof (int)) != PS_OK)
+	goto free_return;
+    }
+
+  /* Similar for the maximum number of thread local data keys.  */
+  if (ps_pglobal_lookup (ps, LIBPTHREAD_SO,
+			 "__linuxthreads_pthread_keys_max", &addr) != PS_OK)
+    (*ta)->pthread_keys_max = PTHREAD_KEYS_MAX;
+  else
+    {
+      if (ps_pdread (ps, addr, &(*ta)->pthread_keys_max, sizeof (int))
+	  != PS_OK)
+	goto free_return;
+    }
+
+  /* Now add the new agent descriptor to the list.  */
+  elemp = (struct agent_list *) malloc (sizeof (struct agent_list));
+  if (elemp == NULL)
+    {
+      /* Argh, now that everything else worked...  */
+      free (*ta);
+      return TD_MALLOC;
+    }
+
+  /* We don't care for thread-safety here.  */
+  elemp->ta = *ta;
+  elemp->next = __td_agent_list;
+  __td_agent_list = elemp;
+
+  return TD_OK;
+}