30 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8//9// This file is shared between various sanitizers' runtime libraries and10// implements OSX-specific functions.11//===----------------------------------------------------------------------===//12 13#include "sanitizer_platform.h"14#if SANITIZER_APPLE15#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 __sanitizer28 29#endif // SANITIZER_APPLE30