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