1 /* Copyright (C) 1994-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <mach.h>
19 #include <mach/mig_support.h>
20 #include <hurd/threadvar.h>
21
22 /* These functions are called by MiG-generated code. */
23
24 mach_port_t __hurd_reply_port0;
25
26 /* Called by MiG to get a reply port. */
27 mach_port_t
__mig_get_reply_port(void)28 __mig_get_reply_port (void)
29 {
30 if (__hurd_local_reply_port == MACH_PORT_NULL
31 || (&__hurd_local_reply_port != &__hurd_reply_port0
32 && __hurd_local_reply_port == __hurd_reply_port0))
33 __hurd_local_reply_port = __mach_reply_port ();
34
35 return __hurd_local_reply_port;
36 }
weak_alias(__mig_get_reply_port,mig_get_reply_port)37 weak_alias (__mig_get_reply_port, mig_get_reply_port)
38 libc_hidden_def (__mig_get_reply_port)
39
40 /* Called by MiG to deallocate the reply port. */
41 void
42 __mig_dealloc_reply_port (mach_port_t arg)
43 {
44 mach_port_t port = __hurd_local_reply_port;
45 __hurd_local_reply_port = MACH_PORT_NULL; /* So the mod_refs RPC won't use it. */
46
47 if (MACH_PORT_VALID (port))
48 __mach_port_mod_refs (__mach_task_self (), port,
49 MACH_PORT_RIGHT_RECEIVE, -1);
50 }
weak_alias(__mig_dealloc_reply_port,mig_dealloc_reply_port)51 weak_alias (__mig_dealloc_reply_port, mig_dealloc_reply_port)
52 libc_hidden_def (__mig_dealloc_reply_port)
53
54 /* Called by mig interfaces when done with a port. Used to provide the
55 same interface as needed when a custom allocator is used. */
56 void
57 __mig_put_reply_port(mach_port_t port)
58 {
59 /* Do nothing. */
60 }
weak_alias(__mig_put_reply_port,mig_put_reply_port)61 weak_alias (__mig_put_reply_port, mig_put_reply_port)
62
63 /* Called at startup with STACK == NULL. When per-thread variables are set
64 up, this is called again with STACK set to the new stack being switched
65 to, where per-thread variables should be set up. */
66 void
67 __mig_init (void *stack)
68 {
69 /* Do nothing. */
70 }
71 weak_alias (__mig_init, mig_init)
72 libc_hidden_def (__mig_init)
73