1 /* $NetBSD: libelf_data.c,v 1.5 2024/03/03 17:37:34 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2006,2008 Joseph Koshy
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 <sys/cdefs.h>
30
31 #include <libelf.h>
32
33 #include "_libelf.h"
34
35 __RCSID("$NetBSD: libelf_data.c,v 1.5 2024/03/03 17:37:34 christos Exp $");
36 ELFTC_VCSID("Id: libelf_data.c 3977 2022-05-01 06:45:34Z jkoshy");
37
38 int
_libelf_xlate_shtype(uint32_t sht)39 _libelf_xlate_shtype(uint32_t sht)
40 {
41 /*
42 * Look for known section types.
43 */
44 switch (sht) {
45 case SHT_DYNAMIC:
46 return (ELF_T_DYN);
47 case SHT_DYNSYM:
48 return (ELF_T_SYM);
49 case SHT_FINI_ARRAY:
50 return (ELF_T_ADDR);
51 case SHT_GNU_HASH:
52 return (ELF_T_GNUHASH);
53 case SHT_GNU_LIBLIST:
54 return (ELF_T_WORD);
55 case SHT_GROUP:
56 return (ELF_T_WORD);
57 case SHT_HASH:
58 return (ELF_T_WORD);
59 case SHT_INIT_ARRAY:
60 return (ELF_T_ADDR);
61 case SHT_NOBITS:
62 return (ELF_T_BYTE);
63 case SHT_NOTE:
64 return (ELF_T_NOTE);
65 case SHT_PREINIT_ARRAY:
66 return (ELF_T_ADDR);
67 case SHT_PROGBITS:
68 return (ELF_T_BYTE);
69 case SHT_REL:
70 return (ELF_T_REL);
71 case SHT_RELA:
72 return (ELF_T_RELA);
73 case SHT_STRTAB:
74 return (ELF_T_BYTE);
75 case SHT_SYMTAB:
76 return (ELF_T_SYM);
77 case SHT_SYMTAB_SHNDX:
78 return (ELF_T_WORD);
79 case SHT_SUNW_dof:
80 return (ELF_T_BYTE);
81 case SHT_SUNW_move:
82 return (ELF_T_MOVE);
83 case SHT_SUNW_syminfo:
84 return (ELF_T_SYMINFO);
85 case SHT_SUNW_verdef: /* == SHT_GNU_verdef */
86 return (ELF_T_VDEF);
87 case SHT_SUNW_verneed: /* == SHT_GNU_verneed */
88 return (ELF_T_VNEED);
89 case SHT_SUNW_versym: /* == SHT_GNU_versym */
90 return (ELF_T_HALF);
91 default:
92 /*
93 * Values in the range [SHT_LOOS..SHT_HIUSER] (i.e.,
94 * OS, processor and user-defined section types) are
95 * legal, but since we do not know anything more about
96 * their semantics, we return a type of ELF_T_BYTE.
97 *
98 * The ELF specification uses 32 bit unsigned values for
99 * denoting section types, and defines SHT_HIUSER to be
100 * 0xFFFFFFFFUL (i.e., UINT32_MAX). Consequently, we only
101 * need to check that 'sht' is greater than or equal to
102 * SHT_LOOS.
103 */
104 if (sht >= SHT_LOOS)
105 return (ELF_T_BYTE);
106
107 /*
108 * Other values are unsupported.
109 */
110 return (-1);
111 }
112 }
113