(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 150 insertions, 0 deletions

diff --git a/linuxthreads_db/td_ta_new.c b/linuxthreads_db/td_ta_new.c
new file mode 100644
index 0000000000..e93d8b4c50
--- /dev/null
+++ b/linuxthreads_db/td_ta_new.c
@@ -0,0 +1,150 @@
+/* Attach to target process.
+   Copyright (C) 1999, 2001, 2002, 2003 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 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 <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <version.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;
+  psaddr_t versaddr;
+  char versbuf[sizeof (VERSION)];
+  struct agent_list *elemp;
+
+  LOG ("td_ta_new");
+
+  /* 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 (td_lookup (ps, PTHREAD_THREADS_EVENTS, &addr) != PS_OK)
+    return TD_NOLIBTHREAD;
+
+  /* Check whether the versions match.  */
+  if (td_lookup (ps, LINUXTHREADS_VERSION, &versaddr) != PS_OK)
+    return TD_VERSION;
+  if (ps_pdread (ps, versaddr, versbuf, sizeof (versbuf)) != PS_OK)
+    return TD_ERR;
+
+  versbuf[sizeof (versbuf) - 1] = '\0';
+  if (strcmp (versbuf, VERSION) != 0)
+    /* Not the right version.  */
+    return TD_VERSION;
+
+  /* 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 (td_lookup (ps, 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 (td_lookup (ps, PTHREAD_HANDLES_NUM, &(*ta)->pthread_handles_num)
+      != PS_OK)
+    goto free_return;
+
+  /* See whether the library contains the necessary symbols.  */
+  if (td_lookup (ps, PTHREAD_HANDLES, &addr) != PS_OK)
+    goto free_return;
+
+  (*ta)->handles = (struct pthread_handle_struct *) addr;
+
+
+  if (td_lookup (ps, 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 (td_lookup (ps, 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 (td_lookup (ps, 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 (td_lookup (ps, 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;
+      /* Don't let bogons in the inferior make us mess ourselves.  */
+      if ((*ta)->sizeof_descr > sizeof (struct _pthread_descr_struct))
+	(*ta)->sizeof_descr = sizeof (struct _pthread_descr_struct);
+    }
+
+  /* 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;
+}