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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_RUNTIME_BASE_MEMORY_TOOL_H_
18 #define ART_RUNTIME_BASE_MEMORY_TOOL_H_
19 
20 #include <stddef.h>
21 
22 #if !defined(__has_feature)
23 #define __has_feature(x) 0
24 #endif
25 
26 #if __has_feature(address_sanitizer)
27 
28 #include <sanitizer/asan_interface.h>
29 #define ADDRESS_SANITIZER
30 
31 #ifdef ART_ENABLE_ADDRESS_SANITIZER
32 #define MEMORY_TOOL_MAKE_NOACCESS(p, s) __asan_poison_memory_region(p, s)
33 #define MEMORY_TOOL_MAKE_UNDEFINED(p, s) __asan_unpoison_memory_region(p, s)
34 #define MEMORY_TOOL_MAKE_DEFINED(p, s) __asan_unpoison_memory_region(p, s)
35 constexpr bool kMemoryToolIsAvailable = true;
36 #else
37 #define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0)
38 #define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0)
39 #define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0)
40 constexpr bool kMemoryToolIsAvailable = false;
41 #endif
42 
43 extern "C" void __asan_handle_no_return();
44 
45 #define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
46 #define MEMORY_TOOL_HANDLE_NO_RETURN __asan_handle_no_return()
47 #define RUNNING_ON_MEMORY_TOOL 1U
48 constexpr bool kMemoryToolIsValgrind = false;
49 constexpr bool kMemoryToolDetectsLeaks = true;
50 constexpr bool kMemoryToolAddsRedzones = true;
51 constexpr size_t kMemoryToolStackGuardSizeScale = 2;
52 
53 #else
54 
55 #include <valgrind.h>
56 #include <memcheck/memcheck.h>
57 #define MEMORY_TOOL_MAKE_NOACCESS(p, s) VALGRIND_MAKE_MEM_NOACCESS(p, s)
58 #define MEMORY_TOOL_MAKE_UNDEFINED(p, s) VALGRIND_MAKE_MEM_UNDEFINED(p, s)
59 #define MEMORY_TOOL_MAKE_DEFINED(p, s) VALGRIND_MAKE_MEM_DEFINED(p, s)
60 #define ATTRIBUTE_NO_SANITIZE_ADDRESS
61 #define MEMORY_TOOL_HANDLE_NO_RETURN do { } while (0)
62 #define RUNNING_ON_MEMORY_TOOL RUNNING_ON_VALGRIND
63 constexpr bool kMemoryToolIsAvailable = true;
64 constexpr bool kMemoryToolIsValgrind = true;
65 constexpr bool kMemoryToolDetectsLeaks = true;
66 constexpr bool kMemoryToolAddsRedzones = true;
67 constexpr size_t kMemoryToolStackGuardSizeScale = 1;
68 
69 #endif
70 
71 #endif  // ART_RUNTIME_BASE_MEMORY_TOOL_H_
72