1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_LIBARTBASE_BASE_MEMORY_TOOL_H_ 18 #define ART_LIBARTBASE_BASE_MEMORY_TOOL_H_ 19 20 #include <stddef.h> 21 22 namespace art { 23 24 #if !defined(__has_feature) 25 # define __has_feature(x) 0 26 #endif 27 28 #if __has_feature(address_sanitizer) 29 30 # include <sanitizer/asan_interface.h> 31 # define ADDRESS_SANITIZER 32 33 # ifdef ART_ENABLE_ADDRESS_SANITIZER 34 # define MEMORY_TOOL_MAKE_NOACCESS(p, s) __asan_poison_memory_region(p, s) 35 # define MEMORY_TOOL_MAKE_UNDEFINED(p, s) __asan_unpoison_memory_region(p, s) 36 # define MEMORY_TOOL_MAKE_DEFINED(p, s) __asan_unpoison_memory_region(p, s) 37 constexpr bool kMemoryToolIsAvailable = true; 38 # else 39 # define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0) 40 # define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0) 41 # define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0) 42 constexpr bool kMemoryToolIsAvailable = false; 43 # endif 44 45 extern "C" void __asan_handle_no_return(); 46 47 # define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address, noinline)) 48 # define MEMORY_TOOL_HANDLE_NO_RETURN __asan_handle_no_return() 49 constexpr bool kRunningOnMemoryTool = true; 50 constexpr bool kMemoryToolDetectsLeaks = true; 51 constexpr bool kMemoryToolAddsRedzones = true; 52 constexpr size_t kMemoryToolStackGuardSizeScale = 2; 53 54 #else 55 56 # define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0) 57 # define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0) 58 # define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0) 59 # define ATTRIBUTE_NO_SANITIZE_ADDRESS 60 # define MEMORY_TOOL_HANDLE_NO_RETURN do { } while (0) 61 constexpr bool kRunningOnMemoryTool = false; 62 constexpr bool kMemoryToolIsAvailable = false; 63 constexpr bool kMemoryToolDetectsLeaks = false; 64 constexpr bool kMemoryToolAddsRedzones = false; 65 constexpr size_t kMemoryToolStackGuardSizeScale = 1; 66 67 #endif 68 69 } // namespace art 70 71 #endif // ART_LIBARTBASE_BASE_MEMORY_TOOL_H_ 72