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