1 /* Return the size of an object file type.
2 Copyright (C) 1998, 1999, 2000, 2002 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 1998.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 2.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifdef HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21
22 #include <gelf.h>
23 #include <stddef.h>
24
25 #include "libelfP.h"
26
27
28 /* These are the sizes for all the known types. */
29 const size_t __libelf_type_sizes[EV_NUM - 1][ELFCLASSNUM - 1][ELF_T_NUM] =
30 {
31 /* We have no entry for EV_NONE siince we have to set an error. */
32 [EV_CURRENT - 1] = {
33 [ELFCLASS32 - 1] = {
34 #define TYPE_SIZES(LIBELFBITS) \
35 [ELF_T_ADDR] = ELFW2(LIBELFBITS, FSZ_ADDR), \
36 [ELF_T_OFF] = ELFW2(LIBELFBITS, FSZ_OFF), \
37 [ELF_T_BYTE] = 1, \
38 [ELF_T_HALF] = ELFW2(LIBELFBITS, FSZ_HALF), \
39 [ELF_T_WORD] = ELFW2(LIBELFBITS, FSZ_WORD), \
40 [ELF_T_SWORD] = ELFW2(LIBELFBITS, FSZ_SWORD), \
41 [ELF_T_XWORD] = ELFW2(LIBELFBITS, FSZ_XWORD), \
42 [ELF_T_SXWORD] = ELFW2(LIBELFBITS, FSZ_SXWORD), \
43 [ELF_T_EHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Ehdr)), \
44 [ELF_T_SHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Shdr)), \
45 [ELF_T_SYM] = sizeof (ElfW2(LIBELFBITS, Ext_Sym)), \
46 [ELF_T_REL] = sizeof (ElfW2(LIBELFBITS, Ext_Rel)), \
47 [ELF_T_RELA] = sizeof (ElfW2(LIBELFBITS, Ext_Rela)), \
48 [ELF_T_PHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Phdr)), \
49 [ELF_T_DYN] = sizeof (ElfW2(LIBELFBITS, Ext_Dyn)), \
50 [ELF_T_VDEF] = sizeof (ElfW2(LIBELFBITS, Ext_Verdef)), \
51 [ELF_T_VDAUX] = sizeof (ElfW2(LIBELFBITS, Ext_Verdaux)), \
52 [ELF_T_VNEED] = sizeof (ElfW2(LIBELFBITS, Ext_Verneed)), \
53 [ELF_T_VNAUX] = sizeof (ElfW2(LIBELFBITS, Ext_Vernaux)), \
54 [ELF_T_NHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Nhdr)), \
55 [ELF_T_SYMINFO] = sizeof (ElfW2(LIBELFBITS, Ext_Syminfo)), \
56 [ELF_T_MOVE] = sizeof (ElfW2(LIBELFBITS, Ext_Move))
57 TYPE_SIZES (32)
58 },
59 [ELFCLASS64 - 1] = {
60 TYPE_SIZES (64)
61 }
62 }
63 };
64
65
66 size_t
gelf_fsize(elf,type,count,version)67 gelf_fsize (elf, type, count, version)
68 Elf *elf;
69 Elf_Type type;
70 size_t count;
71 unsigned int version;
72 {
73 /* We do not have differences between file and memory sizes. Better
74 not since otherwise `mmap' would not work. */
75 if (elf == NULL)
76 return 0;
77
78 if (version == EV_NONE || version >= EV_NUM)
79 {
80 __libelf_seterrno (ELF_E_UNKNOWN_VERSION);
81 return 0;
82 }
83
84 if (type >= ELF_T_NUM)
85 {
86 __libelf_seterrno (ELF_E_UNKNOWN_TYPE);
87 return 0;
88 }
89
90 #if EV_NUM != 2
91 return count * __libelf_type_sizes[version - 1][elf->class - 1][type];
92 #else
93 return count * __libelf_type_sizes[0][elf->class - 1][type];
94 #endif
95 }
96 INTDEF(gelf_fsize)
97