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

1 files changed, 79 insertions, 0 deletions

diff --git a/linuxthreads_db/td_ta_map_id2thr.c b/linuxthreads_db/td_ta_map_id2thr.c
new file mode 100644
index 0000000000..ddeb2d3c4a
--- /dev/null
+++ b/linuxthreads_db/td_ta_map_id2thr.c
@@ -0,0 +1,79 @@
+/* Map thread ID to thread handle.
+   Copyright (C) 1999, 2001, 2002 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 "thread_dbP.h"
+#include <linuxthreads/internals.h>
+
+
+td_err_e
+td_ta_map_id2thr (const td_thragent_t *ta, pthread_t pt, td_thrhandle_t *th)
+{
+  struct pthread_handle_struct phc;
+  struct _pthread_descr_struct pds;
+  int pthread_threads_max;
+
+  LOG ("td_ta_map_id2thr");
+
+  /* Test whether the TA parameter is ok.  */
+  if (! ta_ok (ta))
+    return TD_BADTA;
+
+  /* Make the following expression a bit smaller.  */
+  pthread_threads_max = ta->pthread_threads_max;
+
+  /* We can compute the entry in the handle array we want.  */
+  if (ps_pdread (ta->ph, ta->handles + pt % pthread_threads_max, &phc,
+		 sizeof (struct pthread_handle_struct)) != PS_OK)
+    return TD_ERR;	/* XXX Other error value?  */
+
+  /* Test whether this entry is in use.  */
+  if (phc.h_descr == NULL)
+    {
+      if (pt % pthread_threads_max == 0)
+	{
+	  /* The initial thread always exists but the thread library
+	     might not yet be initialized.  */
+	  th->th_ta_p = (td_thragent_t *) ta;
+	  th->th_unique = NULL;
+
+	  return TD_OK;
+	}
+
+      return TD_BADTH;
+    }
+
+  /* Next test: get the descriptor to see whether this is not an old
+     thread handle.  */
+  if (ps_pdread (ta->ph, phc.h_descr, &pds,
+		 sizeof (struct _pthread_descr_struct)) != PS_OK)
+    return TD_ERR;	/* XXX Other error value?  */
+
+  if (pds.p_tid != pt)
+    return TD_BADTH;
+
+  if (pds.p_terminated != 0)
+    return TD_NOTHR;
+
+  /* Create the `td_thrhandle_t' object.  */
+  th->th_ta_p = (td_thragent_t *) ta;
+  th->th_unique = phc.h_descr;
+
+  return TD_OK;
+}