1 // Copyright (c) 2015, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // Original author: Erik Chen <erikchen@chromium.org> 31 32 // super_fat_arch.h: A class to handle 64-bit object files. Has conversions to 33 // and from struct fat_arch. 34 35 #ifndef BREAKPAD_COMMON_MAC_SUPER_FAT_ARCH_H_ 36 #define BREAKPAD_COMMON_MAC_SUPER_FAT_ARCH_H_ 37 38 #include <limits> 39 #include <mach-o/fat.h> 40 #include <stdint.h> 41 42 // Similar to struct fat_arch, except size-related parameters support 43 // 64-bits. 44 class SuperFatArch { 45 public: 46 uint32_t cputype; 47 uint32_t cpusubtype; 48 uint64_t offset; 49 uint64_t size; 50 uint64_t align; 51 SuperFatArch()52 SuperFatArch() : 53 cputype(0), 54 cpusubtype(0), 55 offset(0), 56 size(0), 57 align(0) { 58 } 59 SuperFatArch(const struct fat_arch & arch)60 explicit SuperFatArch(const struct fat_arch &arch) : 61 cputype(arch.cputype), 62 cpusubtype(arch.cpusubtype), 63 offset(arch.offset), 64 size(arch.size), 65 align(arch.align) { 66 } 67 68 // Returns false if the conversion cannot be made. 69 // If the conversion succeeds, the result is placed in |output_arch|. ConvertToFatArch(struct fat_arch * output_arch)70 bool ConvertToFatArch(struct fat_arch* output_arch) const { 71 if (offset > std::numeric_limits<uint32_t>::max()) 72 return false; 73 if (size > std::numeric_limits<uint32_t>::max()) 74 return false; 75 if (align > std::numeric_limits<uint32_t>::max()) 76 return false; 77 struct fat_arch arch; 78 arch.cputype = cputype; 79 arch.cpusubtype = cpusubtype; 80 arch.offset = offset; 81 arch.size = size; 82 arch.align = align; 83 *output_arch = arch; 84 return true; 85 } 86 }; 87 88 #endif // BREAKPAD_COMMON_MAC_SUPER_FAT_ARCH_H_ 89