interception_mac.cc revision 245614 
1//===-- interception_mac.cc -------------------------------------*- 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 interception methods.
13//===----------------------------------------------------------------------===//
14
15#ifdef __APPLE__
16
17#include "interception.h"
18#include "mach_override/mach_override.h"
19
20namespace __interception {
21bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func) {
22  *orig_old_func = 0;
23  int res = __asan_mach_override_ptr_custom((void*)old_func, (void*)new_func,
24                                            (void**)orig_old_func,
25                                            __interception_allocate_island,
26                                            __interception_deallocate_island);
27  return (res == 0) && (*orig_old_func != 0);
28}
29}  // namespace __interception
30
31#endif  // __APPLE__
32