1 /*- 2 * Copyright (c) 2018 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 <assert.h> 28 #include <libelf.h> 29 30 #include "_libelf.h" 31 32 ELFTC_VCSID("$Id$"); 33 34 /* 35 * A convenience helper that returns the ELF machine architecture for 36 * a ELF descriptor. 37 */ 38 int 39 _libelf_elfmachine(Elf *e) 40 { 41 Elf32_Ehdr *eh32; 42 Elf64_Ehdr *eh64; 43 44 if (!e) 45 return EM_NONE; 46 47 assert(e->e_kind == ELF_K_ELF); 48 assert(e->e_class != ELFCLASSNONE); 49 50 eh32 = NULL; 51 eh64 = NULL; 52 53 switch (e->e_class) { 54 case ELFCLASS32: 55 eh32 = e->e_u.e_elf.e_ehdr.e_ehdr32; 56 return eh32 ? eh32->e_machine : EM_NONE; 57 case ELFCLASS64: 58 eh64 = e->e_u.e_elf.e_ehdr.e_ehdr64; 59 return eh64 ? eh64->e_machine : EM_NONE; 60 } 61 62 return (EM_NONE); 63 } 64