L4Re - L4 Runtime Environment
ipc-l42-gcc3-nopic.h
1 
6 /*
7  * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
8  * Alexander Warg <warg@os.inf.tu-dresden.de>,
9  * Frank Mehnert <fm3@os.inf.tu-dresden.de>,
10  * Jork Löser <jork@os.inf.tu-dresden.de>
11  * economic rights: Technische Universität Dresden (Germany)
12  *
13  * This file is part of TUD:OS and distributed under the terms of the
14  * GNU General Public License 2.
15  * Please see the COPYING-GPL-2 file for details.
16  *
17  * As a special exception, you may use this file as part of a free software
18  * library without restriction. Specifically, if other files instantiate
19  * templates or use macros or inline functions from this file, or you compile
20  * this file and link it with other files to produce an executable, this
21  * file does not by itself cause the resulting executable to be covered by
22  * the GNU General Public License. This exception does not however
23  * invalidate any other reasons why the executable file might be covered by
24  * the GNU General Public License.
25  */
26 #pragma once
27 
28 #include <l4/sys/consts.h>
29 
30 L4_INLINE l4_msgtag_t
32  l4_umword_t flags,
33  l4_umword_t slabel,
34  l4_msgtag_t tag,
35  l4_umword_t *rlabel,
36  l4_timeout_t timeout) L4_NOTHROW
37 {
38  l4_umword_t dummy, dummy1, dummy2;
39 
40  (void)u;
41 
42  __asm__ __volatile__
43  (L4_ENTER_KERNEL
44  :
45  "=d" (dummy2),
46  "=S" (slabel),
47  "=c" (dummy1),
48  "=D" (dummy),
49  "=a" (tag.raw)
50  :
51  "S" (slabel),
52  "c" (timeout),
53  "a" (tag.raw),
54  "d" (dest | flags)
55  L4S_PIC_SYSCALL
56  :
57  "memory", "cc" L4S_PIC_CLOBBER
58  );
59 
60  if (rlabel)
61  *rlabel = slabel;
62 
63  return tag;
64 }
unsigned long l4_cap_idx_t
L4 Capability selector Type.
Definition: types.h:342
struct l4_utcb_t l4_utcb_t
Opaque type for the UTCB.
Definition: utcb.h:67
Timeout pair.
Definition: __timeout.h:57
l4_msgtag_t l4_ipc(l4_cap_idx_t dest, l4_utcb_t *u, l4_umword_t flags, l4_umword_t slabel, l4_msgtag_t tag, l4_umword_t *rlabel, l4_timeout_t timeout) L4_NOTHROW
Generic L4 object invocation.
unsigned long l4_umword_t
Unsigned machine word.
Definition: l4int.h:52
Message tag data structure.
Definition: types.h:159
#define L4_NOTHROW
Mark a function declaration and definition as never throwing an exception.
Definition: compiler.h:185