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92 lines
3.3 KiB
92 lines
3.3 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
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#define ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
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#include <stddef.h>
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namespace art {
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#if !defined(__has_feature)
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# define __has_feature(x) 0
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#endif
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#if __has_feature(address_sanitizer)
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# include <sanitizer/asan_interface.h>
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# define ADDRESS_SANITIZER
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# ifdef ART_ENABLE_ADDRESS_SANITIZER
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# define MEMORY_TOOL_MAKE_NOACCESS(p, s) __asan_poison_memory_region(p, s)
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# define MEMORY_TOOL_MAKE_UNDEFINED(p, s) __asan_unpoison_memory_region(p, s)
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# define MEMORY_TOOL_MAKE_DEFINED(p, s) __asan_unpoison_memory_region(p, s)
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constexpr bool kMemoryToolIsAvailable = true;
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# else
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# define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0)
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# define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0)
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# define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0)
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constexpr bool kMemoryToolIsAvailable = false;
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# endif
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extern "C" void __asan_handle_no_return();
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# define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address, noinline))
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# define MEMORY_TOOL_HANDLE_NO_RETURN __asan_handle_no_return()
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constexpr bool kRunningOnMemoryTool = true;
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constexpr bool kMemoryToolDetectsLeaks = true;
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constexpr bool kMemoryToolAddsRedzones = true;
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constexpr size_t kMemoryToolStackGuardSizeScale = 2;
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#else
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# define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0)
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# define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0)
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# define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0)
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# define ATTRIBUTE_NO_SANITIZE_ADDRESS
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# define MEMORY_TOOL_HANDLE_NO_RETURN do { } while (0)
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constexpr bool kRunningOnMemoryTool = false;
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constexpr bool kMemoryToolIsAvailable = false;
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constexpr bool kMemoryToolDetectsLeaks = false;
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constexpr bool kMemoryToolAddsRedzones = false;
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constexpr size_t kMemoryToolStackGuardSizeScale = 1;
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#endif
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#if __has_feature(hwaddress_sanitizer)
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# define HWADDRESS_SANITIZER
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// NB: The attribute also implies NO_INLINE. If inlined, the hwasan attribute would be lost.
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// If method is also separately marked as ALWAYS_INLINE, the NO_INLINE takes precedence.
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# define ATTRIBUTE_NO_SANITIZE_HWADDRESS __attribute__((no_sanitize("hwaddress"), noinline))
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#else
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# define ATTRIBUTE_NO_SANITIZE_HWADDRESS
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#endif
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// Removes the hwasan tag from the pointer (the top eight bits).
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// Those bits are used for verification by hwasan and they are ignored by normal ARM memory ops.
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template<typename PtrType>
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static inline PtrType* HWASanUntag(PtrType* p) {
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#if __has_feature(hwaddress_sanitizer) && defined(__aarch64__)
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return reinterpret_cast<PtrType*>(reinterpret_cast<uintptr_t>(p) & ((1ULL << 56) - 1));
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#else
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return p;
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#endif
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}
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} // namespace art
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#endif // ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
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