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1 // Copyright 2014 The Crashpad Authors. All rights reserved. | 1 // Copyright 2014 The Crashpad Authors. All rights reserved. |
2 // | 2 // |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
4 // you may not use this file except in compliance with the License. | 4 // you may not use this file except in compliance with the License. |
5 // You may obtain a copy of the License at | 5 // You may obtain a copy of the License at |
6 // | 6 // |
7 // http://www.apache.org/licenses/LICENSE-2.0 | 7 // http://www.apache.org/licenses/LICENSE-2.0 |
8 // | 8 // |
9 // Unless required by applicable law or agreed to in writing, software | 9 // Unless required by applicable law or agreed to in writing, software |
10 // distributed under the License is distributed on an "AS IS" BASIS, | 10 // distributed under the License is distributed on an "AS IS" BASIS, |
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51 // opened, or if the named symbol cannot be found in libmacho. | 51 // opened, or if the named symbol cannot be found in libmacho. |
52 void* LookUpSystemLibMachOSymbol(const char* symbol) { | 52 void* LookUpSystemLibMachOSymbol(const char* symbol) { |
53 static void* dl_handle = SystemLibMachOHandle(); | 53 static void* dl_handle = SystemLibMachOHandle(); |
54 if (!dl_handle) { | 54 if (!dl_handle) { |
55 return nullptr; | 55 return nullptr; |
56 } | 56 } |
57 return dlsym(dl_handle, symbol); | 57 return dlsym(dl_handle, symbol); |
58 } | 58 } |
59 | 59 |
60 #ifndef __LP64__ | 60 #ifndef __LP64__ |
61 typedef mach_header MachHeader; | 61 using MachHeader = mach_header; |
62 #else | 62 #else |
63 typedef mach_header_64 MachHeader; | 63 using MachHeader = mach_header_64; |
64 #endif | 64 #endif |
65 | 65 |
66 typedef uint8_t*(*GetSectionDataType)( | 66 using GetSectionDataType = |
67 const MachHeader*, const char*, const char*, unsigned long*); | 67 uint8_t*(*)(const MachHeader*, const char*, const char*, unsigned long*); |
68 typedef uint8_t*(*GetSegmentDataType)( | 68 using GetSegmentDataType = |
69 const MachHeader*, const char*, unsigned long*); | 69 uint8_t*(*)(const MachHeader*, const char*, unsigned long*); |
70 | 70 |
71 } // namespace | 71 } // namespace |
72 | 72 |
73 extern "C" { | 73 extern "C" { |
74 | 74 |
75 // These implementations look up their functions in libmacho at run time. If | 75 // These implementations look up their functions in libmacho at run time. If |
76 // the system libmacho provides these functions as it normally does on Mac OS X | 76 // the system libmacho provides these functions as it normally does on Mac OS X |
77 // 10.7 and later, the system’s versions are used directly. Otherwise, the | 77 // 10.7 and later, the system’s versions are used directly. Otherwise, the |
78 // versions in third_party/apple_cctools are used, which are actually just | 78 // versions in third_party/apple_cctools are used, which are actually just |
79 // copies of the system’s functions. | 79 // copies of the system’s functions. |
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98 LookUpSystemLibMachOSymbol("getsegmentdata")); | 98 LookUpSystemLibMachOSymbol("getsegmentdata")); |
99 if (system_getsegmentdata) { | 99 if (system_getsegmentdata) { |
100 return system_getsegmentdata(mhp, segname, size); | 100 return system_getsegmentdata(mhp, segname, size); |
101 } | 101 } |
102 return crashpad_getsegmentdata(mhp, segname, size); | 102 return crashpad_getsegmentdata(mhp, segname, size); |
103 } | 103 } |
104 | 104 |
105 } // extern "C" | 105 } // extern "C" |
106 | 106 |
107 #endif // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7 | 107 #endif // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7 |
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