xref: /freebsd/contrib/elftoolchain/libelf/libelf_data.c (revision 545ddfbe7d4fe8adfb862903b24eac1d5896c1ef)
1 /*-
2  * Copyright (c) 2006,2008 Joseph Koshy
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 
29 #include <libelf.h>
30 
31 #include "_libelf.h"
32 
33 ELFTC_VCSID("$Id: libelf_data.c 3080 2014-07-28 08:46:17Z jkoshy $");
34 
35 int
36 _libelf_xlate_shtype(uint32_t sht)
37 {
38 	/*
39 	 * Look for known section types.
40 	 */
41 	switch (sht) {
42 	case SHT_DYNAMIC:
43 		return (ELF_T_DYN);
44 	case SHT_DYNSYM:
45 		return (ELF_T_SYM);
46 	case SHT_FINI_ARRAY:
47 		return (ELF_T_ADDR);
48 	case SHT_GNU_HASH:
49 		return (ELF_T_GNUHASH);
50 	case SHT_GNU_LIBLIST:
51 		return (ELF_T_WORD);
52 	case SHT_GROUP:
53 		return (ELF_T_WORD);
54 	case SHT_HASH:
55 		return (ELF_T_WORD);
56 	case SHT_INIT_ARRAY:
57 		return (ELF_T_ADDR);
58 	case SHT_NOBITS:
59 		return (ELF_T_BYTE);
60 	case SHT_NOTE:
61 		return (ELF_T_NOTE);
62 	case SHT_PREINIT_ARRAY:
63 		return (ELF_T_ADDR);
64 	case SHT_PROGBITS:
65 		return (ELF_T_BYTE);
66 	case SHT_REL:
67 		return (ELF_T_REL);
68 	case SHT_RELA:
69 		return (ELF_T_RELA);
70 	case SHT_STRTAB:
71 		return (ELF_T_BYTE);
72 	case SHT_SYMTAB:
73 		return (ELF_T_SYM);
74 	case SHT_SYMTAB_SHNDX:
75 		return (ELF_T_WORD);
76 	case SHT_SUNW_dof:
77 		return (ELF_T_BYTE);
78 	case SHT_SUNW_move:
79 		return (ELF_T_MOVE);
80 	case SHT_SUNW_syminfo:
81 		return (ELF_T_SYMINFO);
82 	case SHT_SUNW_verdef:	/* == SHT_GNU_verdef */
83 		return (ELF_T_VDEF);
84 	case SHT_SUNW_verneed:	/* == SHT_GNU_verneed */
85 		return (ELF_T_VNEED);
86 	case SHT_SUNW_versym:	/* == SHT_GNU_versym */
87 		return (ELF_T_HALF);
88 	default:
89 		/*
90 		 * Values in the range [SHT_LOOS..SHT_HIUSER] (i.e.,
91 		 * OS, processor and user-defined section types) are
92 		 * legal, but since we do not know anything more about
93 		 * their semantics, we return a type of ELF_T_BYTE.
94 		 */
95 		if (sht >= SHT_LOOS && sht <= SHT_HIUSER)
96 			return (ELF_T_BYTE);
97 
98 		/*
99 		 * Other values are unsupported.
100 		 */
101 		return (-1);
102 	}
103 }
104