asm_error.c revision 1ccdfb683ad6c7e59793136c3a657ddf131cafd1 
1/* Error handling in libasm.
2   Copyright (C) 2002, 2004, 2005, 2009 Red Hat, Inc.
3   This file is part of elfutils.
4   Written by Ulrich Drepper <drepper@redhat.com>, 2002.
5
6   This file is free software; you can redistribute it and/or modify
7   it under the terms of either
8
9     * the GNU Lesser General Public License as published by the Free
10       Software Foundation; either version 3 of the License, or (at
11       your option) any later version
12
13   or
14
15     * the GNU General Public License as published by the Free
16       Software Foundation; either version 2 of the License, or (at
17       your option) any later version
18
19   or both in parallel, as here.
20
21   elfutils is distributed in the hope that it will be useful, but
22   WITHOUT ANY WARRANTY; without even the implied warranty of
23   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
24   General Public License for more details.
25
26   You should have received copies of the GNU General Public License and
27   the GNU Lesser General Public License along with this program.  If
28   not, see <http://www.gnu.org/licenses/>.  */
29
30#ifdef HAVE_CONFIG_H
31# include <config.h>
32#endif
33
34#include <libintl.h>
35#include <stdbool.h>
36#include <stdlib.h>
37
38#include "libasmP.h"
39
40
41/* This is the key for the thread specific memory.  */
42static __thread int global_error;
43
44
45int
46asm_errno (void)
47{
48  int result = global_error;
49  global_error = ASM_E_NOERROR;
50  return result;
51}
52
53
54void
55__libasm_seterrno (int value)
56{
57  global_error = value;
58}
59
60
61/* Return the appropriate message for the error.  */
62static const char *msgs[ASM_E_NUM] =
63{
64  [ASM_E_NOERROR] = N_("no error"),
65  [ASM_E_NOMEM] = N_("out of memory"),
66  [ASM_E_CANNOT_CREATE] = N_("cannot create output file"),
67  [ASM_E_INVALID] = N_("invalid parameter"),
68  [ASM_E_CANNOT_CHMOD] = N_("cannot change mode of output file"),
69  [ASM_E_CANNOT_RENAME] = N_("cannot rename output file"),
70  [ASM_E_DUPLSYM] = N_("duplicate symbol"),
71  [ASM_E_TYPE] = N_("invalid section type for operation"),
72  [ASM_E_IOERROR] = N_("error during output of data"),
73  [ASM_E_ENOSUP] = N_("no backend support available"),
74};
75
76const char *
77asm_errmsg (int error)
78{
79  int last_error = global_error;
80
81  if (error < -1)
82    return _("unknown error");
83  if (error == 0 && last_error == 0)
84    /* No error.  */
85    return NULL;
86
87  if (error != -1)
88    last_error = error;
89
90  if (last_error == ASM_E_LIBELF)
91    return elf_errmsg (-1);
92
93  return _(msgs[last_error]);
94}
95