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1 // Copyright 2015 Google Inc. All Rights Reserved. | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 // | |
15 // Provides an actual static shadow memory. This is intended for use with | |
16 // runtimes that can't patch the memory interceptor probes and thus need a | |
17 // hardcoded address for the shadow memory array. | |
18 // | |
19 // Intended for use in syzyasan_rtl_unittests.exe. | |
20 | |
21 #include "syzygy/agent/asan/shadow.h" | |
22 | |
23 namespace { | |
24 | |
25 // One shadow byte per group of kShadowRatio bytes in a 2G address space. | |
26 // NOTE: This is dependent on the process NOT being large address aware. | |
27 static const size_t kShadowSize = 1 << (31 - agent::asan::kShadowRatioLog); | |
28 | |
29 } // namespace | |
30 | |
31 extern "C" { | |
32 size_t asan_memory_interceptors_shadow_memory_size = kShadowSize; | |
33 uint8_t asan_memory_interceptors_shadow_memory[kShadowSize] = {}; | |
34 } | |
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