1//===-- sanitizer_mac_libcdep.cpp -----------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file is shared between various sanitizers' runtime libraries and 10// implements OSX-specific functions. 11//===----------------------------------------------------------------------===// 12 13#include "sanitizer_platform.h" 14#if SANITIZER_APPLE 15#include "sanitizer_mac.h" 16 17#include <sys/mman.h> 18 19namespace __sanitizer { 20 21void RestrictMemoryToMaxAddress(uptr max_address) { 22 uptr size_to_mmap = GetMaxUserVirtualAddress() + 1 - max_address; 23 void *res = MmapFixedNoAccess(max_address, size_to_mmap, "high gap"); 24 CHECK(res != MAP_FAILED); 25} 26 27} // namespace __sanitizer 28 29#endif // SANITIZER_APPLE 30