1 files changed, 74 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 0000000..2a42199
--- /dev/null
+++ b/libpthread/sysdeps/l4/hurd/pt-thread-alloc.c
@@ -0,0 +1,74 @@
+/* Allocate kernel thread.  Hurd/L4 version.
+   Copyright (C) 2007 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 <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.addr = __hurd_startup_data->thread;
+      /* If the main thread exits, then we wait.  Thus, we don't need
+	 the shadow cap.  */
+      thread->object.cap = NULL;
+      thread->threadid = l4_myself ();
+      return 0;
+    }
+  else
+    {
+      struct storage storage;
+
+      /* We can't don't use mmap as when the exception thread starts
+	 running and it accesses its stack, it will fault, which we
+	 naturally cannot handle.  */
+      storage = storage_alloc (ADDR_VOID, cap_page,
+			       STORAGE_UNKNOWN, ADDR_VOID);
+      if (ADDR_IS_VOID (storage.addr))
+	return EAGAIN;
+
+      thread->exception_handler_stack = storage;
+
+
+      storage = storage_alloc (meta_data_activity, cap_thread,
+			       /* Threads are rarely shortly lived.  */
+			       STORAGE_MEDIUM_LIVED, ADDR_VOID);
+      if (ADDR_IS_VOID (storage.addr))
+	{
+	  storage_free (thread->exception_handler_stack.addr, false);
+	  return EAGAIN;
+	}
+
+      thread->object = storage;
+    }
+
+  return 0;
+}