1 //===-- sanitizer_mac_libcdep.cc ------------------------------------------===// 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 shared between various sanitizers' runtime libraries and 11 // implements OSX-specific functions. 12 //===----------------------------------------------------------------------===// 13 14 #include "sanitizer_platform.h" 15 #if SANITIZER_MAC 16 #include "sanitizer_mac.h" 17 18 #include <sys/mman.h> 19 20 namespace __sanitizer { 21 RestrictMemoryToMaxAddress(uptr max_address)22void RestrictMemoryToMaxAddress(uptr max_address) { 23 uptr size_to_mmap = GetMaxUserVirtualAddress() + 1 - max_address; 24 void *res = MmapFixedNoAccess(max_address, size_to_mmap, "high gap"); 25 CHECK(res != MAP_FAILED); 26 } 27 28 } // namespace __sanitizer 29 30 #endif // SANITIZER_MAC 31