1 files changed, 95 insertions, 0 deletions
diff --git a/libpthread/sysdeps/l4/hurd/pt-thread-alloc.c b/libpthread/sysdeps/l4/hurd/pt-thread-alloc.c
new file mode 100644
index 00000000..ada7b3b8
--- /dev/null
+++ b/libpthread/sysdeps/l4/hurd/pt-thread-alloc.c
@@ -0,0 +1,95 @@
+/* Allocate kernel thread.  Viengoos version.
+   Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <assert.h>
+#include <errno.h>
+#include <string.h>
+
+#include <hurd/startup.h>
+#include <hurd/storage.h>
+#include <hurd/as.h>
+#include <hurd/addr.h>
+
+#include <pt-internal.h>
+
+extern struct hurd_startup_data *__hurd_startup_data;
+
+extern addr_t meta_data_activity;
+
+int
+__pthread_thread_alloc (struct __pthread *thread)
+{
+  /* The main thread is already running of course.  */
+  if (__pthread_num_threads == 1)
+    {
+      thread->object = __hurd_startup_data->thread;
+      thread->threadid = l4_myself ();
+      return 0;
+    }
+  else
+    {
+      addr_t exception_area = as_alloc (EXCEPTION_AREA_SIZE_LOG2, 1, true);
+
+      thread->exception_area_va
+	= ADDR_TO_PTR (addr_extend (exception_area,
+				    0, EXCEPTION_AREA_SIZE_LOG2));
+
+      int i;
+      for (i = 0; i < EXCEPTION_AREA_SIZE / PAGESIZE; i ++)
+	{
+	  addr_t slot = addr_chop (PTR_TO_ADDR (thread->exception_area_va
+						+ i * PAGESIZE),
+				   PAGESIZE_LOG2);
+	  as_ensure (slot);
+
+	  struct storage storage = storage_alloc (ADDR_VOID, cap_page,
+						  STORAGE_LONG_LIVED,
+						  OBJECT_POLICY_DEFAULT,
+						  slot);
+	  if (ADDR_IS_VOID (storage.addr))
+	    {
+	      int j;
+	      for (j = 0; j < i; j ++)
+		storage_free (thread->exception_area[j], false);
+	      as_free (exception_area, false);
+	      return EAGAIN;
+	    }
+
+	  thread->exception_area[i] = storage.addr;
+	}
+
+      struct storage storage;
+      storage = storage_alloc (meta_data_activity, cap_thread,
+			       /* Threads are rarely shortly lived.  */
+			       STORAGE_MEDIUM_LIVED, OBJECT_POLICY_DEFAULT,
+			       ADDR_VOID);
+      if (ADDR_IS_VOID (storage.addr))
+	{
+	  int j;
+	  for (j = 0; j < EXCEPTION_AREA_SIZE / PAGESIZE; j ++)
+	    storage_free (thread->exception_area[j], false);
+	  as_free (exception_area, false);
+	  return EAGAIN;
+	}
+
+      thread->object = storage.addr;
+    }
+
+  return 0;
+}