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      1 //===-- asan_mac.h ----------------------------------------------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file is a part of AddressSanitizer, an address sanity checker.
     11 //
     12 // Mac-specific ASan definitions.
     13 //===----------------------------------------------------------------------===//
     14 #ifndef ASAN_MAC_H
     15 #define ASAN_MAC_H
     16 
     17 // CF_RC_BITS, the layout of CFRuntimeBase and __CFStrIsConstant are internal
     18 // and subject to change in further CoreFoundation versions. Apple does not
     19 // guarantee any binary compatibility from release to release.
     20 
     21 // See http://opensource.apple.com/source/CF/CF-635.15/CFInternal.h
     22 #if defined(__BIG_ENDIAN__)
     23 #define CF_RC_BITS 0
     24 #endif
     25 
     26 #if defined(__LITTLE_ENDIAN__)
     27 #define CF_RC_BITS 3
     28 #endif
     29 
     30 // See http://opensource.apple.com/source/CF/CF-635.15/CFRuntime.h
     31 typedef struct __CFRuntimeBase {
     32   uptr _cfisa;
     33   u8 _cfinfo[4];
     34 #if __LP64__
     35   u32 _rc;
     36 #endif
     37 } CFRuntimeBase;
     38 
     39 enum {
     40   MACOS_VERSION_UNKNOWN = 0,
     41   MACOS_VERSION_LEOPARD,
     42   MACOS_VERSION_SNOW_LEOPARD,
     43   MACOS_VERSION_LION,
     44   MACOS_VERSION_MOUNTAIN_LION
     45 };
     46 
     47 // Used by asan_malloc_mac.cc and asan_mac.cc
     48 extern "C" void __CFInitialize();
     49 
     50 namespace __asan {
     51 
     52 int GetMacosVersion();
     53 void MaybeReplaceCFAllocator();
     54 
     55 }  // namespace __asan
     56 
     57 #endif  // ASAN_MAC_H
     58