Branch data Line data Source code
1 : : /* Retrieve ELF descriptor used for DWARF access.
2 : : Copyright (C) 2002, 2003, 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 <assert.h>
35 : : #include <stddef.h>
36 : :
37 : : #include "libdwP.h"
38 : :
39 : :
40 : : /* The error number. */
41 : : static __thread int global_error;
42 : :
43 : :
44 : : int
45 : 56 : dwarf_errno (void)
46 : : {
47 : 56 : int result = global_error;
48 : 56 : global_error = DWARF_E_NOERROR;
49 : 56 : return result;
50 : : }
51 : : INTDEF(dwarf_errno)
52 : :
53 : :
54 : : /* XXX For now we use string pointers. Once the table stablelizes
55 : : make it more DSO-friendly. */
56 : : static const char *errmsgs[] =
57 : : {
58 : : [DWARF_E_NOERROR] = N_("no error"),
59 : : [DWARF_E_UNKNOWN_ERROR] = N_("unknown error"),
60 : : [DWARF_E_INVALID_ACCESS] = N_("invalid access"),
61 : : [DWARF_E_NO_REGFILE] = N_("no regular file"),
62 : : [DWARF_E_IO_ERROR] = N_("I/O error"),
63 : : [DWARF_E_INVALID_ELF] = N_("invalid ELF file"),
64 : : [DWARF_E_NO_DWARF] = N_("no DWARF information"),
65 : : [DWARF_E_NOELF] = N_("no ELF file"),
66 : : [DWARF_E_GETEHDR_ERROR] = N_("cannot get ELF header"),
67 : : [DWARF_E_NOMEM] = N_("out of memory"),
68 : : [DWARF_E_UNIMPL] = N_("not implemented"),
69 : : [DWARF_E_INVALID_CMD] = N_("invalid command"),
70 : : [DWARF_E_INVALID_VERSION] = N_("invalid version"),
71 : : [DWARF_E_INVALID_FILE] = N_("invalid file"),
72 : : [DWARF_E_NO_ENTRY] = N_("no entries found"),
73 : : [DWARF_E_INVALID_DWARF] = N_("invalid DWARF"),
74 : : [DWARF_E_NO_STRING] = N_("no string data"),
75 : : [DWARF_E_NO_ADDR] = N_("no address value"),
76 : : [DWARF_E_NO_CONSTANT] = N_("no constant value"),
77 : : [DWARF_E_NO_REFERENCE] = N_("no reference value"),
78 : : [DWARF_E_INVALID_REFERENCE] = N_("invalid reference value"),
79 : : [DWARF_E_NO_DEBUG_LINE] = N_(".debug_line section missing"),
80 : : [DWARF_E_INVALID_DEBUG_LINE] = N_("invalid .debug_line section"),
81 : : [DWARF_E_TOO_BIG] = N_("debug information too big"),
82 : : [DWARF_E_VERSION] = N_("invalid DWARF version"),
83 : : [DWARF_E_INVALID_DIR_IDX] = N_("invalid directory index"),
84 : : [DWARF_E_ADDR_OUTOFRANGE] = N_("address out of range"),
85 : : [DWARF_E_NO_LOCLIST] = N_("no location list value"),
86 : : [DWARF_E_NO_BLOCK] = N_("no block data"),
87 : : [DWARF_E_INVALID_LINE_IDX] = N_("invalid line index"),
88 : : [DWARF_E_INVALID_ARANGE_IDX] = N_("invalid address range index"),
89 : : [DWARF_E_NO_MATCH] = N_("no matching address range"),
90 : : [DWARF_E_NO_FLAG] = N_("no flag value"),
91 : : [DWARF_E_INVALID_OFFSET] = N_("invalid offset"),
92 : : [DWARF_E_NO_DEBUG_RANGES] = N_(".debug_ranges section missing"),
93 : : [DWARF_E_INVALID_CFI] = N_("invalid CFI section"),
94 : : [DWARF_E_NO_ALT_DEBUGLINK] = N_("no alternative debug link found"),
95 : : };
96 : : #define nerrmsgs (sizeof (errmsgs) / sizeof (errmsgs[0]))
97 : :
98 : :
99 : : void
100 : 82 : __libdw_seterrno (value)
101 : : int value;
102 : : {
103 : 164 : global_error = (value >= 0 && value < (int) nerrmsgs
104 [ + - ]: 82 : ? value : DWARF_E_UNKNOWN_ERROR);
105 : 82 : }
106 : :
107 : :
108 : : const char *
109 : 0 : dwarf_errmsg (error)
110 : : int error;
111 : : {
112 : 0 : int last_error = global_error;
113 : :
114 [ # # ]: 0 : if (error == 0)
115 [ # # ]: 0 : return last_error != 0 ? _(errmsgs[last_error]) : NULL;
116 [ # # ]: 0 : else if (error < -1 || error >= (int) nerrmsgs)
117 : 0 : return _(errmsgs[DWARF_E_UNKNOWN_ERROR]);
118 : :
119 [ # # ]: 0 : return _(errmsgs[error == -1 ? last_error : error]);
120 : : }
121 : : INTDEF(dwarf_errmsg)
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