1 /* $NetBSD: elfclass.h,v 1.1.1.4 2013/03/23 15:49:16 christos Exp $ */ 2 3 /* 4 * Copyright (c) Christos Zoulas 2008. 5 * All Rights Reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice immediately at the beginning of the file, without modification, 12 * this list of conditions, and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 if (nbytes <= sizeof(elfhdr)) 30 return 0; 31 32 u.l = 1; 33 (void)memcpy(&elfhdr, buf, sizeof elfhdr); 34 swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA]; 35 36 type = elf_getu16(swap, elfhdr.e_type); 37 switch (type) { 38 #ifdef ELFCORE 39 case ET_CORE: 40 flags |= FLAGS_IS_CORE; 41 if (dophn_core(ms, clazz, swap, fd, 42 (off_t)elf_getu(swap, elfhdr.e_phoff), 43 elf_getu16(swap, elfhdr.e_phnum), 44 (size_t)elf_getu16(swap, elfhdr.e_phentsize), 45 fsize, &flags) == -1) 46 return -1; 47 break; 48 #endif 49 case ET_EXEC: 50 case ET_DYN: 51 if (dophn_exec(ms, clazz, swap, fd, 52 (off_t)elf_getu(swap, elfhdr.e_phoff), 53 elf_getu16(swap, elfhdr.e_phnum), 54 (size_t)elf_getu16(swap, elfhdr.e_phentsize), 55 fsize, &flags, elf_getu16(swap, elfhdr.e_shnum)) 56 == -1) 57 return -1; 58 /*FALLTHROUGH*/ 59 case ET_REL: 60 if (doshn(ms, clazz, swap, fd, 61 (off_t)elf_getu(swap, elfhdr.e_shoff), 62 elf_getu16(swap, elfhdr.e_shnum), 63 (size_t)elf_getu16(swap, elfhdr.e_shentsize), 64 fsize, &flags, elf_getu16(swap, elfhdr.e_machine), 65 (int)elf_getu16(swap, elfhdr.e_shstrndx)) == -1) 66 return -1; 67 break; 68 69 default: 70 break; 71 } 72 return 1; 73