1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
#define ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
#include <stddef.h>
namespace art {
#if !defined(__has_feature)
# define __has_feature(x) 0
#endif
#if __has_feature(address_sanitizer)
# include <sanitizer/asan_interface.h>
# define ADDRESS_SANITIZER
# ifdef ART_ENABLE_ADDRESS_SANITIZER
# define MEMORY_TOOL_MAKE_NOACCESS(p, s) __asan_poison_memory_region(p, s)
# define MEMORY_TOOL_MAKE_UNDEFINED(p, s) __asan_unpoison_memory_region(p, s)
# define MEMORY_TOOL_MAKE_DEFINED(p, s) __asan_unpoison_memory_region(p, s)
constexpr bool kMemoryToolIsAvailable = true;
# else
# define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0)
# define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0)
# define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0)
constexpr bool kMemoryToolIsAvailable = false;
# endif
extern "C" void __asan_handle_no_return();
# define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address, noinline))
# define MEMORY_TOOL_HANDLE_NO_RETURN __asan_handle_no_return()
constexpr bool kRunningOnMemoryTool = true;
constexpr bool kMemoryToolDetectsLeaks = true;
constexpr bool kMemoryToolAddsRedzones = true;
constexpr size_t kMemoryToolStackGuardSizeScale = 2;
#else
# define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0)
# define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0)
# define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0)
# define ATTRIBUTE_NO_SANITIZE_ADDRESS
# define MEMORY_TOOL_HANDLE_NO_RETURN do { } while (0)
constexpr bool kRunningOnMemoryTool = false;
constexpr bool kMemoryToolIsAvailable = false;
constexpr bool kMemoryToolDetectsLeaks = false;
constexpr bool kMemoryToolAddsRedzones = false;
constexpr size_t kMemoryToolStackGuardSizeScale = 1;
#endif
#if __has_feature(hwaddress_sanitizer)
# define HWADDRESS_SANITIZER
// NB: The attribute also implies NO_INLINE. If inlined, the hwasan attribute would be lost.
// If method is also separately marked as ALWAYS_INLINE, the NO_INLINE takes precedence.
# define ATTRIBUTE_NO_SANITIZE_HWADDRESS __attribute__((no_sanitize("hwaddress"), noinline))
#else
# define ATTRIBUTE_NO_SANITIZE_HWADDRESS
#endif
// Removes the hwasan tag from the pointer (the top eight bits).
// Those bits are used for verification by hwasan and they are ignored by normal ARM memory ops.
template<typename PtrType>
static inline PtrType* HWASanUntag(PtrType* p) {
#if __has_feature(hwaddress_sanitizer) && defined(__aarch64__)
return reinterpret_cast<PtrType*>(reinterpret_cast<uintptr_t>(p) & ((1ULL << 56) - 1));
#else
return p;
#endif
}
} // namespace art
#endif // ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
|
