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131 lines
4.7 KiB
131 lines
4.7 KiB
/* Retrieve ELF descriptor used for DWARF access.
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Copyright (C) 2002-2005, 2009, 2014, 2015, 2017, 2018 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include <stddef.h>
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#include "libdwP.h"
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/* The error number. */
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static __thread int global_error;
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int
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dwarf_errno (void)
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{
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int result = global_error;
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global_error = DWARF_E_NOERROR;
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return result;
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}
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INTDEF(dwarf_errno)
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/* XXX For now we use string pointers. Once the table stablelizes
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make it more DSO-friendly. */
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static const char *errmsgs[] =
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{
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[DWARF_E_NOERROR] = N_("no error"),
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[DWARF_E_UNKNOWN_ERROR] = N_("unknown error"),
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[DWARF_E_INVALID_ACCESS] = N_("invalid access"),
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[DWARF_E_NO_REGFILE] = N_("no regular file"),
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[DWARF_E_IO_ERROR] = N_("I/O error"),
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[DWARF_E_INVALID_ELF] = N_("invalid ELF file"),
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[DWARF_E_NO_DWARF] = N_("no DWARF information"),
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[DWARF_E_COMPRESSED_ERROR] = N_("cannot decompress DWARF"),
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[DWARF_E_NOELF] = N_("no ELF file"),
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[DWARF_E_GETEHDR_ERROR] = N_("cannot get ELF header"),
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[DWARF_E_NOMEM] = N_("out of memory"),
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[DWARF_E_UNIMPL] = N_("not implemented"),
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[DWARF_E_INVALID_CMD] = N_("invalid command"),
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[DWARF_E_INVALID_VERSION] = N_("invalid version"),
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[DWARF_E_INVALID_FILE] = N_("invalid file"),
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[DWARF_E_NO_ENTRY] = N_("no entries found"),
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[DWARF_E_INVALID_DWARF] = N_("invalid DWARF"),
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[DWARF_E_NO_STRING] = N_("no string data"),
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[DWARF_E_NO_DEBUG_STR] = N_(".debug_str section missing"),
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[DWARF_E_NO_DEBUG_LINE_STR] = N_(".debug_line_str section missing"),
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[DWARF_E_NO_STR_OFFSETS] = N_(".debug_str_offsets section missing"),
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[DWARF_E_NO_ADDR] = N_("no address value"),
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[DWARF_E_NO_CONSTANT] = N_("no constant value"),
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[DWARF_E_NO_REFERENCE] = N_("no reference value"),
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[DWARF_E_INVALID_REFERENCE] = N_("invalid reference value"),
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[DWARF_E_NO_DEBUG_LINE] = N_(".debug_line section missing"),
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[DWARF_E_INVALID_DEBUG_LINE] = N_("invalid .debug_line section"),
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[DWARF_E_TOO_BIG] = N_("debug information too big"),
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[DWARF_E_VERSION] = N_("invalid DWARF version"),
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[DWARF_E_INVALID_DIR_IDX] = N_("invalid directory index"),
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[DWARF_E_ADDR_OUTOFRANGE] = N_("address out of range"),
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[DWARF_E_NO_DEBUG_LOC] = N_(".debug_loc section missing"),
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[DWARF_E_NO_DEBUG_LOCLISTS] = N_(".debug_loclists section missing"),
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[DWARF_E_NO_LOC_VALUE] = N_("not a location list value"),
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[DWARF_E_NO_BLOCK] = N_("no block data"),
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[DWARF_E_INVALID_LINE_IDX] = N_("invalid line index"),
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[DWARF_E_INVALID_ARANGE_IDX] = N_("invalid address range index"),
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[DWARF_E_NO_MATCH] = N_("no matching address range"),
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[DWARF_E_NO_FLAG] = N_("no flag value"),
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[DWARF_E_INVALID_OFFSET] = N_("invalid offset"),
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[DWARF_E_NO_DEBUG_RANGES] = N_(".debug_ranges section missing"),
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[DWARF_E_NO_DEBUG_RNGLISTS] = N_(".debug_rnglists section missing"),
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[DWARF_E_INVALID_CFI] = N_("invalid CFI section"),
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[DWARF_E_NO_ALT_DEBUGLINK] = N_("no alternative debug link found"),
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[DWARF_E_INVALID_OPCODE] = N_("invalid opcode"),
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[DWARF_E_NOT_CUDIE] = N_("not a CU (unit) DIE"),
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[DWARF_E_UNKNOWN_LANGUAGE] = N_("unknown language code"),
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[DWARF_E_NO_DEBUG_ADDR] = N_(".debug_addr section missing"),
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};
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#define nerrmsgs (sizeof (errmsgs) / sizeof (errmsgs[0]))
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void
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internal_function
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__libdw_seterrno (int value)
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{
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global_error = (value >= 0 && value < (int) nerrmsgs
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? value : DWARF_E_UNKNOWN_ERROR);
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}
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const char *
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dwarf_errmsg (int error)
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{
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int last_error = global_error;
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if (error == 0)
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return last_error != 0 ? _(errmsgs[last_error]) : NULL;
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else if (error < -1 || error >= (int) nerrmsgs)
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return _(errmsgs[DWARF_E_UNKNOWN_ERROR]);
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return _(errmsgs[error == -1 ? last_error : error]);
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}
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INTDEF(dwarf_errmsg)
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