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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_MAC
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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_MAC
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