1 /**
2 * \file l4re/lib/src/log.cc
3 * \brief Log
4 */
5 /*
6 * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
7 * Alexander Warg <warg@os.inf.tu-dresden.de>
8 * economic rights: Technische Universität Dresden (Germany)
9 *
10 * This file is part of TUD:OS and distributed under the terms of the
11 * GNU General Public License 2.
12 * Please see the COPYING-GPL-2 file for details.
13 *
14 * As a special exception, you may use this file as part of a free software
15 * library without restriction. Specifically, if other files instantiate
16 * templates or use macros or inline functions from this file, or you compile
17 * this file and link it with other files to produce an executable, this
18 * file does not by itself cause the resulting executable to be covered by
19 * the GNU General Public License. This exception does not however
20 * invalidate any other reasons why the executable file might be covered by
21 * the GNU General Public License.
22 */
23 #include <l4/re/log>
24
25 #include <cstring>
26
27 namespace L4Re {
28
29 void
printn(char const * string,int len) const30 Log::printn(char const *string, int len) const noexcept
31 {
32 l4_msg_regs_t store;
33 l4_msg_regs_t *mr = l4_utcb_mr();
34
35 memcpy(&store, mr, sizeof(store));
36
37 while (len)
38 {
39 long l = write(string, len);
40 if (l < 0)
41 return;
42 len -= l;
43 string += l;
44 }
45
46 memcpy(mr, &store, sizeof(store));
47 }
48
49 void
print(char const * string) const50 Log::print(char const *string) const noexcept
51 {
52 printn(string, __builtin_strlen(string));
53 }
54
55 }
56