1 /* $NetBSD: elfclass.h,v 1.1.1.5 2014/06/13 01:48:23 christos Exp $ */ 2 /* 3 * Copyright (c) Christos Zoulas 2008. 4 * All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice immediately at the beginning of the file, without modification, 11 * this list of conditions, and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 if (nbytes <= sizeof(elfhdr)) 29 return 0; 30 31 u.l = 1; 32 (void)memcpy(&elfhdr, buf, sizeof elfhdr); 33 swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA]; 34 35 type = elf_getu16(swap, elfhdr.e_type); 36 switch (type) { 37 #ifdef ELFCORE 38 case ET_CORE: 39 flags |= FLAGS_IS_CORE; 40 if (dophn_core(ms, clazz, swap, fd, 41 (off_t)elf_getu(swap, elfhdr.e_phoff), 42 elf_getu16(swap, elfhdr.e_phnum), 43 (size_t)elf_getu16(swap, elfhdr.e_phentsize), 44 fsize, &flags) == -1) 45 return -1; 46 break; 47 #endif 48 case ET_EXEC: 49 case ET_DYN: 50 if (dophn_exec(ms, clazz, swap, fd, 51 (off_t)elf_getu(swap, elfhdr.e_phoff), 52 elf_getu16(swap, elfhdr.e_phnum), 53 (size_t)elf_getu16(swap, elfhdr.e_phentsize), 54 fsize, &flags, elf_getu16(swap, elfhdr.e_shnum)) 55 == -1) 56 return -1; 57 /*FALLTHROUGH*/ 58 case ET_REL: 59 if (doshn(ms, clazz, swap, fd, 60 (off_t)elf_getu(swap, elfhdr.e_shoff), 61 elf_getu16(swap, elfhdr.e_shnum), 62 (size_t)elf_getu16(swap, elfhdr.e_shentsize), 63 fsize, &flags, elf_getu16(swap, elfhdr.e_machine), 64 (int)elf_getu16(swap, elfhdr.e_shstrndx)) == -1) 65 return -1; 66 break; 67 68 default: 69 break; 70 } 71 return 1; 72