Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 87 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/mach/hurd/mig-reply.c b/REORG.TODO/sysdeps/mach/hurd/mig-reply.c
new file mode 100644
index 0000000000..dde3fbf86c
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/hurd/mig-reply.c
@@ -0,0 +1,87 @@
+/* Copyright (C) 1994-2017 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 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <mach.h>
+#include <hurd/threadvar.h>
+
+#define GETPORT \
+  mach_port_t *portloc = \
+    (mach_port_t *) __hurd_threadvar_location (_HURD_THREADVAR_MIG_REPLY)
+#define reply_port (*(use_threadvar ? portloc : &global_reply_port))
+
+static int use_threadvar;
+static mach_port_t global_reply_port;
+
+/* These functions are called by MiG-generated code.  */
+
+/* Called by MiG to get a reply port.  */
+mach_port_t
+__mig_get_reply_port (void)
+{
+  GETPORT;
+
+  if (reply_port == MACH_PORT_NULL)
+    reply_port = __mach_reply_port ();
+
+  return reply_port;
+}
+weak_alias (__mig_get_reply_port, mig_get_reply_port)
+
+/* Called by MiG to deallocate the reply port.  */
+void
+__mig_dealloc_reply_port (mach_port_t arg)
+{
+  mach_port_t port;
+
+  GETPORT;
+
+  port = reply_port;
+  reply_port = MACH_PORT_NULL;	/* So the mod_refs RPC won't use it.  */
+
+  if (MACH_PORT_VALID (port))
+    __mach_port_mod_refs (__mach_task_self (), port,
+			  MACH_PORT_RIGHT_RECEIVE, -1);
+}
+weak_alias (__mig_dealloc_reply_port, mig_dealloc_reply_port)
+
+/* Called by mig interfaces when done with a port.  Used to provide the
+   same interface as needed when a custom allocator is used.  */
+void
+__mig_put_reply_port(mach_port_t port)
+{
+  /* Do nothing.  */
+}
+weak_alias (__mig_put_reply_port, mig_put_reply_port)
+
+/* Called at startup with STACK == NULL.  When per-thread variables are set
+   up, this is called again with STACK set to the new stack being switched
+   to, where per-thread variables should be set up.  */
+void
+__mig_init (void *stack)
+{
+  use_threadvar = stack != 0;
+
+  if (use_threadvar)
+    {
+      /* Recycle the reply port used before multithreading was enabled.  */
+      mach_port_t *portloc = (mach_port_t *)
+	__hurd_threadvar_location_from_sp (_HURD_THREADVAR_MIG_REPLY, stack);
+      *portloc = global_reply_port;
+      global_reply_port = MACH_PORT_NULL;
+    }
+}
+weak_alias (__mig_init, mig_init)