1 files changed, 48 insertions, 0 deletions
diff --git a/nptl/sysdeps/x86_64/td_ta_map_lwp2thr.c b/nptl/sysdeps/x86_64/td_ta_map_lwp2thr.c
new file mode 100644
index 0000000000..1b405549af
--- /dev/null
+++ b/nptl/sysdeps/x86_64/td_ta_map_lwp2thr.c
@@ -0,0 +1,48 @@
+/* Which thread is running on an LWP?  x86-64 version.
+   Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.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 <tls.h>
+#include <sys/reg.h>
+
+
+td_err_e
+td_ta_map_lwp2thr (const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
+{
+  LOG ("td_ta_map_lwp2thr");
+
+  /* Test whether the TA parameter is ok.  */
+  if (! ta_ok (ta))
+    return TD_BADTA;
+
+  prgregset_t regs;
+  if (ps_lgetregs (ta->ph, lwpid, regs) != PS_OK)
+    return TD_ERR;
+
+  /* Get the thread area for the addressed thread.  */
+  if (ps_get_thread_area (ta->ph, lwpid, regs[FS] >> 3, &th->th_unique)
+      != PS_OK)
+    return TD_ERR;	/* XXX Other error value?  */
+
+  /* Found it.  Now complete the `td_thrhandle_t' object.  */
+  th->th_ta_p = (td_thragent_t *) ta;
+
+  return TD_OK;
+}