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