diff options
Diffstat (limited to 'libelf/gelf_fsize.c')
| -rw-r--r-- | libelf/gelf_fsize.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/libelf/gelf_fsize.c b/libelf/gelf_fsize.c new file mode 100644 index 0000000..7a9a308 --- /dev/null +++ b/libelf/gelf_fsize.c @@ -0,0 +1,132 @@ +/* Return the size of an object file type. + Copyright (C) 1998-2010 Red Hat, Inc. + This file is part of Red Hat elfutils. + Written by Ulrich Drepper <drepper@redhat.com>, 1998. + + Red Hat elfutils is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by the + Free Software Foundation; version 2 of the License. + + Red Hat elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License along + with Red Hat elfutils; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. + + In addition, as a special exception, Red Hat, Inc. gives You the + additional right to link the code of Red Hat elfutils with code licensed + under any Open Source Initiative certified open source license + (http://www.opensource.org/licenses/index.php) which requires the + distribution of source code with any binary distribution and to + distribute linked combinations of the two. Non-GPL Code permitted under + this exception must only link to the code of Red Hat elfutils through + those well defined interfaces identified in the file named EXCEPTION + found in the source code files (the "Approved Interfaces"). The files + of Non-GPL Code may instantiate templates or use macros or inline + functions from the Approved Interfaces without causing the resulting + work to be covered by the GNU General Public License. Only Red Hat, + Inc. may make changes or additions to the list of Approved Interfaces. + Red Hat's grant of this exception is conditioned upon your not adding + any new exceptions. If you wish to add a new Approved Interface or + exception, please contact Red Hat. You must obey the GNU General Public + License in all respects for all of the Red Hat elfutils code and other + code used in conjunction with Red Hat elfutils except the Non-GPL Code + covered by this exception. If you modify this file, you may extend this + exception to your version of the file, but you are not obligated to do + so. If you do not wish to provide this exception without modification, + you must delete this exception statement from your version and license + this file solely under the GPL without exception. + + Red Hat elfutils is an included package of the Open Invention Network. + An included package of the Open Invention Network is a package for which + Open Invention Network licensees cross-license their patents. No patent + license is granted, either expressly or impliedly, by designation as an + included package. Should you wish to participate in the Open Invention + Network licensing program, please visit www.openinventionnetwork.com + <http://www.openinventionnetwork.com>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <gelf.h> +#include <stddef.h> + +#include "libelfP.h" + + +/* These are the sizes for all the known types. */ +const size_t __libelf_type_sizes[EV_NUM - 1][ELFCLASSNUM - 1][ELF_T_NUM] = +{ + /* We have no entry for EV_NONE since we have to set an error. */ + [EV_CURRENT - 1] = { + [ELFCLASS32 - 1] = { +#define TYPE_SIZES(LIBELFBITS) \ + [ELF_T_ADDR] = ELFW2(LIBELFBITS, FSZ_ADDR), \ + [ELF_T_OFF] = ELFW2(LIBELFBITS, FSZ_OFF), \ + [ELF_T_BYTE] = 1, \ + [ELF_T_HALF] = ELFW2(LIBELFBITS, FSZ_HALF), \ + [ELF_T_WORD] = ELFW2(LIBELFBITS, FSZ_WORD), \ + [ELF_T_SWORD] = ELFW2(LIBELFBITS, FSZ_SWORD), \ + [ELF_T_XWORD] = ELFW2(LIBELFBITS, FSZ_XWORD), \ + [ELF_T_SXWORD] = ELFW2(LIBELFBITS, FSZ_SXWORD), \ + [ELF_T_EHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Ehdr)), \ + [ELF_T_SHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Shdr)), \ + [ELF_T_SYM] = sizeof (ElfW2(LIBELFBITS, Ext_Sym)), \ + [ELF_T_REL] = sizeof (ElfW2(LIBELFBITS, Ext_Rel)), \ + [ELF_T_RELA] = sizeof (ElfW2(LIBELFBITS, Ext_Rela)), \ + [ELF_T_PHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Phdr)), \ + [ELF_T_DYN] = sizeof (ElfW2(LIBELFBITS, Ext_Dyn)), \ + [ELF_T_VDEF] = sizeof (ElfW2(LIBELFBITS, Ext_Verdef)), \ + [ELF_T_VDAUX] = sizeof (ElfW2(LIBELFBITS, Ext_Verdaux)), \ + [ELF_T_VNEED] = sizeof (ElfW2(LIBELFBITS, Ext_Verneed)), \ + [ELF_T_VNAUX] = sizeof (ElfW2(LIBELFBITS, Ext_Vernaux)), \ + [ELF_T_NHDR] = sizeof (ElfW2(LIBELFBITS, Ext_Nhdr)), \ + [ELF_T_SYMINFO] = sizeof (ElfW2(LIBELFBITS, Ext_Syminfo)), \ + [ELF_T_MOVE] = sizeof (ElfW2(LIBELFBITS, Ext_Move)), \ + [ELF_T_LIB] = sizeof (ElfW2(LIBELFBITS, Ext_Lib)), \ + [ELF_T_AUXV] = sizeof (ElfW2(LIBELFBITS, Ext_auxv_t)), \ + [ELF_T_GNUHASH] = ELFW2(LIBELFBITS, FSZ_WORD) + TYPE_SIZES (32) + }, + [ELFCLASS64 - 1] = { + TYPE_SIZES (64) + } + } +}; + + +size_t +gelf_fsize (elf, type, count, version) + Elf *elf; + Elf_Type type; + size_t count; + unsigned int version; +{ + /* We do not have differences between file and memory sizes. Better + not since otherwise `mmap' would not work. */ + if (elf == NULL) + return 0; + + if (version == EV_NONE || version >= EV_NUM) + { + __libelf_seterrno (ELF_E_UNKNOWN_VERSION); + return 0; + } + + if (type >= ELF_T_NUM) + { + __libelf_seterrno (ELF_E_UNKNOWN_TYPE); + return 0; + } + +#if EV_NUM != 2 + return count * __libelf_type_sizes[version - 1][elf->class - 1][type]; +#else + return count * __libelf_type_sizes[0][elf->class - 1][type]; +#endif +} +INTDEF(gelf_fsize) |