1/*	$NetBSD: dwarf_errmsg.c,v 1.5 2024/03/03 17:37:30 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2007 John Birrell (jb@freebsd.org)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "_libdwarf.h"
30
31__RCSID("$NetBSD: dwarf_errmsg.c,v 1.5 2024/03/03 17:37:30 christos Exp $");
32ELFTC_VCSID("Id: dwarf_errmsg.c 2975 2014-01-21 20:08:04Z kaiwang27");
33
34static const char *_libdwarf_errors[] = {
35#define	DEFINE_ERROR(N,S)		[DW_DLE_##N] = S
36	DEFINE_ERROR(NONE, "No Error"),
37	DEFINE_ERROR(ERROR, "An error"),
38	DEFINE_ERROR(NO_ENTRY, "No entry found"),
39	DEFINE_ERROR(ARGUMENT, "Invalid argument"),
40	DEFINE_ERROR(DEBUG_INFO_NULL, "Debug info NULL"),
41	DEFINE_ERROR(MEMORY, "Insufficient memory"),
42	DEFINE_ERROR(ELF, "ELF error"),
43	DEFINE_ERROR(CU_LENGTH_ERROR, "Invalid compilation unit data"),
44	DEFINE_ERROR(VERSION_STAMP_ERROR, "Unsupported version"),
45	DEFINE_ERROR(DEBUG_ABBREV_NULL, "Abbrev not found"),
46	DEFINE_ERROR(DIE_NO_CU_CONTEXT,	"No current compilation unit"),
47	DEFINE_ERROR(LOC_EXPR_BAD, "Invalid location expression"),
48	DEFINE_ERROR(EXPR_LENGTH_BAD, "Invalid DWARF expression length"),
49	DEFINE_ERROR(DEBUG_LOC_SECTION_SHORT, "Loclist section too short"),
50	DEFINE_ERROR(ATTR_FORM_BAD, "Invalid attribute form"),
51	DEFINE_ERROR(DEBUG_LINE_LENGTH_BAD, "Line info section too short"),
52	DEFINE_ERROR(LINE_FILE_NUM_BAD, "Invalid file number."),
53	DEFINE_ERROR(DIR_INDEX_BAD, "Invalid dir index."),
54	DEFINE_ERROR(DEBUG_FRAME_LENGTH_BAD, "Frame section too short"),
55	DEFINE_ERROR(NO_CIE_FOR_FDE, "FDE without corresponding CIE"),
56	DEFINE_ERROR(FRAME_AUGMENTATION_UNKNOWN, "Unknown CIE augmentation"),
57	DEFINE_ERROR(FRAME_INSTR_EXEC_ERROR, "Frame instruction exec error"),
58	DEFINE_ERROR(FRAME_VERSION_BAD, "Unsupported frame section version"),
59	DEFINE_ERROR(FRAME_TABLE_COL_BAD, "Invalid table column value"),
60	DEFINE_ERROR(DF_REG_NUM_TOO_HIGH, "Register number too large"),
61	DEFINE_ERROR(PC_NOT_IN_FDE_RANGE, "PC requested not in the FDE range"),
62	DEFINE_ERROR(ARANGE_OFFSET_BAD, "Invalid address range offset"),
63	DEFINE_ERROR(DEBUG_MACRO_INCONSISTENT, "Invalid macinfo data"),
64	DEFINE_ERROR(ELF_SECT_ERR, "Application callback failed"),
65	DEFINE_ERROR(NUM, "Unknown DWARF error")
66#undef	DEFINE_ERROR
67};
68
69const char *
70dwarf_errmsg_(Dwarf_Error *error)
71{
72	const char *p;
73
74	if (error == NULL)
75		return NULL;
76
77	if (error->err_error < 0 || error->err_error >= DW_DLE_NUM)
78		return _libdwarf_errors[DW_DLE_NUM];
79	else if (error->err_error == DW_DLE_NONE)
80		return _libdwarf_errors[DW_DLE_NONE];
81	else
82		p = _libdwarf_errors[error->err_error];
83
84	if (error->err_error == DW_DLE_ELF)
85		snprintf(error->err_msg, sizeof(error->err_msg),
86		    "ELF error : %s [%s(%d)]", elf_errmsg(error->err_elferror),
87		    error->err_func, error->err_line);
88	else
89		snprintf(error->err_msg, sizeof(error->err_msg),
90		    "%s [%s(%d)]", p, error->err_func, error->err_line);
91
92	return (const char *) error->err_msg;
93}
94