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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.
44class SuperFatArch {
45 public:
46 uint32_t cputype;
47 uint32_t cpusubtype;
48 uint64_t offset;
49 uint64_t size;
50 uint64_t align;
51
52 SuperFatArch() :
53 cputype(0),
54 cpusubtype(0),
55 offset(0),
56 size(0),
57 align(0) {
58 }
59
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|.
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