1441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Return number of sections in the ELF file. 2441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Copyright (C) 2002 Red Hat, Inc. 3441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Written by Ulrich Drepper <drepper@redhat.com>, 2002. 4441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 5441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project This program is free software; you can redistribute it and/or modify 6441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project it under the terms of the GNU General Public License as published by 7441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project the Free Software Foundation, version 2. 8441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 9441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project This program is distributed in the hope that it will be useful, 10441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project but WITHOUT ANY WARRANTY; without even the implied warranty of 11441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GNU General Public License for more details. 13441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 14441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project You should have received a copy of the GNU General Public License 15441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project along with this program; if not, write to the Free Software Foundation, 16441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 18441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#ifdef HAVE_CONFIG_H 19441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project# include <config.h> 20441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#endif 21441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 22441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <assert.h> 23441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <gelf.h> 24441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stddef.h> 25441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 26441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include "libelfP.h" 27441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 28441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 29441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectint 30441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectelf_getshnum (elf, dst) 31441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *elf; 32441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t *dst; 33441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 34441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int result = 0; 35441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int idx; 36441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 37441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf == NULL) 38441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return -1; 39441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 40441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (elf->kind != ELF_K_ELF)) 41441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 42441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __libelf_seterrno (ELF_E_INVALID_HANDLE); 43441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return -1; 44441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 45441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 46441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rwlock_rdlock (elf->lock); 47441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 48441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project idx = elf->state.elf.scns_last->cnt; 49441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (idx != 0 50441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (elf->state.elf.scns_last 51441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project != (elf->class == ELFCLASS32 52441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (offsetof (Elf, state.elf32.scns) 53441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project == offsetof (Elf, state.elf64.scns)) 54441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? &elf->state.elf32.scns : &elf->state.elf64.scns))) 55441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* There is at least one section. */ 56441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *dst = 1 + elf->state.elf.scns_last->data[idx - 1].index; 57441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 58441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *dst = 0; 59441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 60441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rwlock_unlock (elf->lock); 61441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 62441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 63441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 64441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source ProjectINTDEF(elf_getshnum) 65