1 /* Return the size of an object file type. 2 Copyright (C) 1998-2010, 2015 Red Hat, Inc. 3 This file is part of elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 1998. 5 6 This file is free software; you can redistribute it and/or modify 7 it under the terms of either 8 9 * the GNU Lesser General Public License as published by the Free 10 Software Foundation; either version 3 of the License, or (at 11 your option) any later version 12 13 or 14 15 * the GNU General Public License as published by the Free 16 Software Foundation; either version 2 of the License, or (at 17 your option) any later version 18 19 or both in parallel, as here. 20 21 elfutils is distributed in the hope that it will be useful, but 22 WITHOUT ANY WARRANTY; without even the implied warranty of 23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 General Public License for more details. 25 26 You should have received copies of the GNU General Public License and 27 the GNU Lesser General Public License along with this program. If 28 not, see <http://www.gnu.org/licenses/>. */ 29 30 #ifdef HAVE_CONFIG_H 31 # include <config.h> 32 #endif 33 34 #include <gelf.h> 35 #include <stddef.h> 36 37 #include "libelfP.h" 38 39 40 /* These are the sizes for all the known types. */ 41 const size_t __libelf_type_sizes[ELFCLASSNUM - 1][ELF_T_NUM] = 42 { 43 [ELFCLASS32 - 1] = { 44 #define TYPE_SIZES(LIBELFBITS) \ 45 [ELF_T_ADDR] = ELFW2(LIBELFBITS, FSZ_ADDR), \ 46 [ELF_T_OFF] = ELFW2(LIBELFBITS, FSZ_OFF), \ 47 [ELF_T_BYTE] = 1, \ 48 [ELF_T_HALF] = ELFW2(LIBELFBITS, FSZ_HALF), \ 49 [ELF_T_WORD] = ELFW2(LIBELFBITS, FSZ_WORD), \ 50 [ELF_T_SWORD] = ELFW2(LIBELFBITS, FSZ_SWORD), \ 51 [ELF_T_XWORD] = ELFW2(LIBELFBITS, FSZ_XWORD), \ 52 [ELF_T_SXWORD] = ELFW2(LIBELFBITS, FSZ_SXWORD), \ 53 [ELF_T_EHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Ehdr)), \ 54 [ELF_T_SHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Shdr)), \ 55 [ELF_T_SYM] = sizeof (ElfW2(LIBELFBITS, Ext_Sym)), \ 56 [ELF_T_REL] = sizeof (ElfW2(LIBELFBITS, Ext_Rel)), \ 57 [ELF_T_RELA] = sizeof (ElfW2(LIBELFBITS, Ext_Rela)), \ 58 [ELF_T_PHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Phdr)), \ 59 [ELF_T_DYN] = sizeof (ElfW2(LIBELFBITS, Ext_Dyn)), \ 60 [ELF_T_VDEF] = sizeof (ElfW2(LIBELFBITS, Ext_Verdef)), \ 61 [ELF_T_VDAUX] = sizeof (ElfW2(LIBELFBITS, Ext_Verdaux)), \ 62 [ELF_T_VNEED] = sizeof (ElfW2(LIBELFBITS, Ext_Verneed)), \ 63 [ELF_T_VNAUX] = sizeof (ElfW2(LIBELFBITS, Ext_Vernaux)), \ 64 [ELF_T_NHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Nhdr)), \ 65 /* Note the header size is the same, but padding is different. */ \ 66 [ELF_T_NHDR8] = sizeof (ElfW2(LIBELFBITS, Ext_Nhdr)), \ 67 [ELF_T_SYMINFO] = sizeof (ElfW2(LIBELFBITS, Ext_Syminfo)), \ 68 [ELF_T_MOVE] = sizeof (ElfW2(LIBELFBITS, Ext_Move)), \ 69 [ELF_T_LIB] = sizeof (ElfW2(LIBELFBITS, Ext_Lib)), \ 70 [ELF_T_AUXV] = sizeof (ElfW2(LIBELFBITS, Ext_auxv_t)), \ 71 [ELF_T_CHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Chdr)), \ 72 [ELF_T_GNUHASH] = ELFW2(LIBELFBITS, FSZ_WORD) 73 TYPE_SIZES (32) 74 }, 75 [ELFCLASS64 - 1] = { 76 TYPE_SIZES (64) 77 } 78 }; 79 80 81 size_t 82 gelf_fsize (Elf *elf, Elf_Type type, size_t count, unsigned int version) 83 { 84 /* We do not have differences between file and memory sizes. Better 85 not since otherwise `mmap' would not work. */ 86 if (elf == NULL) 87 return 0; 88 89 if (version != EV_CURRENT) 90 { 91 __libelf_seterrno (ELF_E_UNKNOWN_VERSION); 92 return 0; 93 } 94 95 if (type >= ELF_T_NUM) 96 { 97 __libelf_seterrno (ELF_E_UNKNOWN_TYPE); 98 return 0; 99 } 100 101 return count * __libelf_type_sizes[elf->class - 1][type]; 102 } 103 INTDEF(gelf_fsize) 104
