runtime/asm_support.h - platform/art - Git at Google

 /*
  * Copyright (C) 2011 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_RUNTIME_ASM_SUPPORT_H_
 #define ART_RUNTIME_ASM_SUPPORT_H_

 #if defined(__cplusplus)
 #include "art_method.h"
 #include "lambda/art_lambda_method.h"
 #include "lambda/closure.h"
 #include "gc/allocator/rosalloc.h"
 #include "lock_word.h"
 #include "mirror/class.h"
 #include "mirror/lambda_proxy.h"
 #include "mirror/string.h"
 #include "runtime.h"
 #include "thread.h"
 #endif

 #include "read_barrier_c.h"

 #if defined(__arm__) || defined(__mips__)
 // In quick code for ARM and MIPS we make poor use of registers and perform frequent suspend
 // checks in the event of loop back edges. The SUSPEND_CHECK_INTERVAL constant is loaded into a
 // register at the point of an up-call or after handling a suspend check. It reduces the number of
 // loads of the TLS suspend check value by the given amount (turning it into a decrement and compare
 // of a register). This increases the time for a thread to respond to requests from GC and the
 // debugger, damaging GC performance and creating other unwanted artifacts. For example, this count
 // has the effect of making loops and Java code look cold in profilers, where the count is reset
 // impacts where samples will occur. Reducing the count as much as possible improves profiler
 // accuracy in tools like traceview.
 // TODO: get a compiler that can do a proper job of loop optimization and remove this.
 #define SUSPEND_CHECK_INTERVAL 96
 #endif

 #if defined(__cplusplus)

 #ifndef ADD_TEST_EQ  // Allow #include-r to replace with their own.
 #define ADD_TEST_EQ(x, y) CHECK_EQ(x, y);
 #endif

 namespace art {

 static inline void CheckAsmSupportOffsetsAndSizes() {
 #else
 #define ADD_TEST_EQ(x, y)
 #endif

 #if defined(__LP64__)
 #define POINTER_SIZE_SHIFT 3
 #else
 #define POINTER_SIZE_SHIFT 2
 #endif
 ADD_TEST_EQ(static_cast<size_t>(1U << POINTER_SIZE_SHIFT),
             static_cast<size_t>(__SIZEOF_POINTER__))

 // Size of references to the heap on the stack.
 #define STACK_REFERENCE_SIZE 4
 ADD_TEST_EQ(static_cast<size_t>(STACK_REFERENCE_SIZE), sizeof(art::StackReference<art::mirror::Object>))

 // Size of heap references
 #define COMPRESSED_REFERENCE_SIZE 4
 ADD_TEST_EQ(static_cast<size_t>(COMPRESSED_REFERENCE_SIZE),
             sizeof(art::mirror::CompressedReference<art::mirror::Object>))

 #define COMPRESSED_REFERENCE_SIZE_SHIFT 2
 ADD_TEST_EQ(static_cast<size_t>(1U << COMPRESSED_REFERENCE_SIZE_SHIFT),
             static_cast<size_t>(COMPRESSED_REFERENCE_SIZE))

 // Note: these callee save methods loads require read barriers.
 // Offset of field Runtime::callee_save_methods_[kSaveAll]
 #define RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET 0
 ADD_TEST_EQ(static_cast<size_t>(RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET),
             art::Runtime::GetCalleeSaveMethodOffset(art::Runtime::kSaveAll))

 // Offset of field Runtime::callee_save_methods_[kRefsOnly]
 #define RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET 8
 ADD_TEST_EQ(static_cast<size_t>(RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET),
             art::Runtime::GetCalleeSaveMethodOffset(art::Runtime::kRefsOnly))

 // Offset of field Runtime::callee_save_methods_[kRefsAndArgs]
 #define RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET (2 * 8)
 ADD_TEST_EQ(static_cast<size_t>(RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET),
             art::Runtime::GetCalleeSaveMethodOffset(art::Runtime::kRefsAndArgs))

 // Offset of field Thread::tls32_.state_and_flags.
 #define THREAD_FLAGS_OFFSET 0
 ADD_TEST_EQ(THREAD_FLAGS_OFFSET,
             art::Thread::ThreadFlagsOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offset of field Thread::tls32_.thin_lock_thread_id.
 #define THREAD_ID_OFFSET 12
 ADD_TEST_EQ(THREAD_ID_OFFSET,
             art::Thread::ThinLockIdOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offset of field Thread::tlsPtr_.card_table.
 #define THREAD_CARD_TABLE_OFFSET 128
 ADD_TEST_EQ(THREAD_CARD_TABLE_OFFSET,
             art::Thread::CardTableOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offset of field Thread::tlsPtr_.exception.
 #define THREAD_EXCEPTION_OFFSET (THREAD_CARD_TABLE_OFFSET + __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_EXCEPTION_OFFSET,
             art::Thread::ExceptionOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offset of field Thread::tlsPtr_.managed_stack.top_quick_frame_.
 #define THREAD_TOP_QUICK_FRAME_OFFSET (THREAD_CARD_TABLE_OFFSET + (3 * __SIZEOF_POINTER__))
 ADD_TEST_EQ(THREAD_TOP_QUICK_FRAME_OFFSET,
             art::Thread::TopOfManagedStackOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offset of field Thread::tlsPtr_.self.
 #define THREAD_SELF_OFFSET (THREAD_CARD_TABLE_OFFSET + (9 * __SIZEOF_POINTER__))
 ADD_TEST_EQ(THREAD_SELF_OFFSET,
             art::Thread::SelfOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offset of field Thread::tlsPtr_.thread_local_pos.
 #define THREAD_LOCAL_POS_OFFSET (THREAD_CARD_TABLE_OFFSET + 151 * __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_LOCAL_POS_OFFSET,
             art::Thread::ThreadLocalPosOffset<__SIZEOF_POINTER__>().Int32Value())
 // Offset of field Thread::tlsPtr_.thread_local_end.
 #define THREAD_LOCAL_END_OFFSET (THREAD_LOCAL_POS_OFFSET + __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_LOCAL_END_OFFSET,
             art::Thread::ThreadLocalEndOffset<__SIZEOF_POINTER__>().Int32Value())
 // Offset of field Thread::tlsPtr_.thread_local_objects.
 #define THREAD_LOCAL_OBJECTS_OFFSET (THREAD_LOCAL_POS_OFFSET + 2 * __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_LOCAL_OBJECTS_OFFSET,
             art::Thread::ThreadLocalObjectsOffset<__SIZEOF_POINTER__>().Int32Value())
 // Offset of field Thread::tlsPtr_.rosalloc_runs.
 #define THREAD_ROSALLOC_RUNS_OFFSET (THREAD_LOCAL_POS_OFFSET + 3 * __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_ROSALLOC_RUNS_OFFSET,
             art::Thread::RosAllocRunsOffset<__SIZEOF_POINTER__>().Int32Value())
 // Offset of field Thread::tlsPtr_.thread_local_alloc_stack_top.
 #define THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET (THREAD_ROSALLOC_RUNS_OFFSET + 34 * __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET,
             art::Thread::ThreadLocalAllocStackTopOffset<__SIZEOF_POINTER__>().Int32Value())
 // Offset of field Thread::tlsPtr_.thread_local_alloc_stack_end.
 #define THREAD_LOCAL_ALLOC_STACK_END_OFFSET (THREAD_ROSALLOC_RUNS_OFFSET + 35 * __SIZEOF_POINTER__)
 ADD_TEST_EQ(THREAD_LOCAL_ALLOC_STACK_END_OFFSET,
             art::Thread::ThreadLocalAllocStackEndOffset<__SIZEOF_POINTER__>().Int32Value())

 // Offsets within java.lang.Object.
 #define MIRROR_OBJECT_CLASS_OFFSET 0
 ADD_TEST_EQ(MIRROR_OBJECT_CLASS_OFFSET, art::mirror::Object::ClassOffset().Int32Value())
 #define MIRROR_OBJECT_LOCK_WORD_OFFSET 4
 ADD_TEST_EQ(MIRROR_OBJECT_LOCK_WORD_OFFSET, art::mirror::Object::MonitorOffset().Int32Value())

 #if defined(USE_BROOKS_READ_BARRIER)
 #define MIRROR_OBJECT_HEADER_SIZE 16
 #else
 #define MIRROR_OBJECT_HEADER_SIZE 8
 #endif
 ADD_TEST_EQ(size_t(MIRROR_OBJECT_HEADER_SIZE), sizeof(art::mirror::Object))

 // Offsets within java.lang.Class.
 #define MIRROR_CLASS_COMPONENT_TYPE_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_CLASS_COMPONENT_TYPE_OFFSET,
             art::mirror::Class::ComponentTypeOffset().Int32Value())
 #define MIRROR_CLASS_ACCESS_FLAGS_OFFSET (36 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_CLASS_ACCESS_FLAGS_OFFSET,
             art::mirror::Class::AccessFlagsOffset().Int32Value())
 #define MIRROR_CLASS_OBJECT_SIZE_OFFSET (108 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_CLASS_OBJECT_SIZE_OFFSET,
             art::mirror::Class::ObjectSizeOffset().Int32Value())
 #define MIRROR_CLASS_STATUS_OFFSET (120 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_CLASS_STATUS_OFFSET,
             art::mirror::Class::StatusOffset().Int32Value())

 #define MIRROR_CLASS_STATUS_INITIALIZED 10
 ADD_TEST_EQ(static_cast<uint32_t>(MIRROR_CLASS_STATUS_INITIALIZED),
             static_cast<uint32_t>(art::mirror::Class::kStatusInitialized))
 #define ACCESS_FLAGS_CLASS_IS_FINALIZABLE 0x80000000
 ADD_TEST_EQ(static_cast<uint32_t>(ACCESS_FLAGS_CLASS_IS_FINALIZABLE),
             static_cast<uint32_t>(art::kAccClassIsFinalizable))

 // Array offsets.
 #define MIRROR_ARRAY_LENGTH_OFFSET      MIRROR_OBJECT_HEADER_SIZE
 ADD_TEST_EQ(MIRROR_ARRAY_LENGTH_OFFSET, art::mirror::Array::LengthOffset().Int32Value())

 #define MIRROR_CHAR_ARRAY_DATA_OFFSET   (4 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_CHAR_ARRAY_DATA_OFFSET,
             art::mirror::Array::DataOffset(sizeof(uint16_t)).Int32Value())

 #define MIRROR_OBJECT_ARRAY_DATA_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_OBJECT_ARRAY_DATA_OFFSET,
     art::mirror::Array::DataOffset(
         sizeof(art::mirror::HeapReference<art::mirror::Object>)).Int32Value())

 #define MIRROR_OBJECT_ARRAY_COMPONENT_SIZE 4
 ADD_TEST_EQ(static_cast<size_t>(MIRROR_OBJECT_ARRAY_COMPONENT_SIZE),
             sizeof(art::mirror::HeapReference<art::mirror::Object>))

 #define MIRROR_LONG_ARRAY_DATA_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_LONG_ARRAY_DATA_OFFSET,
             art::mirror::Array::DataOffset(sizeof(uint64_t)).Int32Value())

 // Offsets within java.lang.String.
 #define MIRROR_STRING_COUNT_OFFSET  MIRROR_OBJECT_HEADER_SIZE
 ADD_TEST_EQ(MIRROR_STRING_COUNT_OFFSET, art::mirror::String::CountOffset().Int32Value())

 #define MIRROR_STRING_VALUE_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(MIRROR_STRING_VALUE_OFFSET, art::mirror::String::ValueOffset().Int32Value())

 // Offsets within java.lang.reflect.ArtMethod.
 #define ART_METHOD_DEX_CACHE_METHODS_OFFSET_32 20
 ADD_TEST_EQ(ART_METHOD_DEX_CACHE_METHODS_OFFSET_32,
             art::ArtMethod::DexCacheResolvedMethodsOffset(4).Int32Value())

 #define ART_METHOD_DEX_CACHE_METHODS_OFFSET_64 24
 ADD_TEST_EQ(ART_METHOD_DEX_CACHE_METHODS_OFFSET_64,
             art::ArtMethod::DexCacheResolvedMethodsOffset(8).Int32Value())

 #define ART_METHOD_DEX_CACHE_TYPES_OFFSET_32 24
 ADD_TEST_EQ(ART_METHOD_DEX_CACHE_TYPES_OFFSET_32,
             art::ArtMethod::DexCacheResolvedTypesOffset(4).Int32Value())

 #define ART_METHOD_DEX_CACHE_TYPES_OFFSET_64 32
 ADD_TEST_EQ(ART_METHOD_DEX_CACHE_TYPES_OFFSET_64,
             art::ArtMethod::DexCacheResolvedTypesOffset(8).Int32Value())

 #define ART_METHOD_QUICK_CODE_OFFSET_32 32
 ADD_TEST_EQ(ART_METHOD_QUICK_CODE_OFFSET_32,
             art::ArtMethod::EntryPointFromQuickCompiledCodeOffset(4).Int32Value())

 #define ART_METHOD_QUICK_CODE_OFFSET_64 48
 ADD_TEST_EQ(ART_METHOD_QUICK_CODE_OFFSET_64,
             art::ArtMethod::EntryPointFromQuickCompiledCodeOffset(8).Int32Value())

 #define LOCK_WORD_STATE_SHIFT 30
 ADD_TEST_EQ(LOCK_WORD_STATE_SHIFT, static_cast<int32_t>(art::LockWord::kStateShift))

 #define LOCK_WORD_STATE_MASK 0xC0000000
 ADD_TEST_EQ(LOCK_WORD_STATE_MASK, static_cast<uint32_t>(art::LockWord::kStateMaskShifted))

 #define LOCK_WORD_READ_BARRIER_STATE_SHIFT 28
 ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_SHIFT,
             static_cast<int32_t>(art::LockWord::kReadBarrierStateShift))

 #define LOCK_WORD_READ_BARRIER_STATE_MASK 0x30000000
 ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_MASK,
             static_cast<int32_t>(art::LockWord::kReadBarrierStateMaskShifted))

 #define LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED 0xCFFFFFFF
 ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED,
             static_cast<uint32_t>(art::LockWord::kReadBarrierStateMaskShiftedToggled))

 #define LOCK_WORD_THIN_LOCK_COUNT_ONE 65536
 ADD_TEST_EQ(LOCK_WORD_THIN_LOCK_COUNT_ONE, static_cast<int32_t>(art::LockWord::kThinLockCountOne))

 #define OBJECT_ALIGNMENT_MASK 7
 ADD_TEST_EQ(static_cast<size_t>(OBJECT_ALIGNMENT_MASK), art::kObjectAlignment - 1)

 #define OBJECT_ALIGNMENT_MASK_TOGGLED 0xFFFFFFF8
 ADD_TEST_EQ(static_cast<uint32_t>(OBJECT_ALIGNMENT_MASK_TOGGLED),
             ~static_cast<uint32_t>(art::kObjectAlignment - 1))

 #define ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE 128
 ADD_TEST_EQ(ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::kMaxThreadLocalBracketSize))

 #define ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT 4
 ADD_TEST_EQ(ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::kBracketQuantumSizeShift))

 #define ROSALLOC_BRACKET_QUANTUM_SIZE_MASK 15
 ADD_TEST_EQ(ROSALLOC_BRACKET_QUANTUM_SIZE_MASK,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::kBracketQuantumSize - 1))

 #define ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED32 0xfffffff0
 ADD_TEST_EQ(static_cast<uint32_t>(ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED32),
             ~static_cast<uint32_t>(art::gc::allocator::RosAlloc::kBracketQuantumSize - 1))

 #define ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED64 0xfffffffffffffff0
 ADD_TEST_EQ(static_cast<uint64_t>(ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED64),
             ~static_cast<uint64_t>(art::gc::allocator::RosAlloc::kBracketQuantumSize - 1))

 #define ROSALLOC_RUN_FREE_LIST_OFFSET 8
 ADD_TEST_EQ(ROSALLOC_RUN_FREE_LIST_OFFSET,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::RunFreeListOffset()))

 #define ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET 0
 ADD_TEST_EQ(ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::RunFreeListHeadOffset()))

 #define ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET 16
 ADD_TEST_EQ(ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::RunFreeListSizeOffset()))

 #define ROSALLOC_SLOT_NEXT_OFFSET 0
 ADD_TEST_EQ(ROSALLOC_SLOT_NEXT_OFFSET,
             static_cast<int32_t>(art::gc::allocator::RosAlloc::RunSlotNextOffset()))
 // Assert this so that we can avoid zeroing the next field by installing the class pointer.
 ADD_TEST_EQ(ROSALLOC_SLOT_NEXT_OFFSET, MIRROR_OBJECT_CLASS_OFFSET)
 // Working with raw lambdas (lambda::Closure) in raw memory:
 //
 //     |---------------------|
 //     | ArtLambdaMethod*    |  <-- pointer to lambda art method, has the info like the size.
 //     |---------------------|  <-- 'data offset'
 //     | [ Dynamic Size ]    |  <-- OPTIONAL: only if the ArtLambdaMethod::dynamic_size_ is true.
 //     |---------------------|
 //     | Captured Variables  |
 //     |        ...          |
 //     |---------------------|  <-- total length determined by "dynamic size" if it is present,
 //                                  otherwise by the ArtLambdaMethod::static_size_

 // Offset from start of lambda::Closure to the ArtLambdaMethod*.
 #define LAMBDA_CLOSURE_METHOD_OFFSET 0
 ADD_TEST_EQ(static_cast<size_t>(LAMBDA_CLOSURE_METHOD_OFFSET),
             offsetof(art::lambda::ClosureStorage, lambda_info_))
 // Offset from the start of lambda::Closure to the data (captured vars or dynamic size).
 #define LAMBDA_CLOSURE_DATA_OFFSET __SIZEOF_POINTER__
 ADD_TEST_EQ(static_cast<size_t>(LAMBDA_CLOSURE_DATA_OFFSET),
             offsetof(art::lambda::ClosureStorage, captured_))
 // Offsets to captured variables intentionally omitted as it needs a runtime branch.

 // The size of a lambda closure after it's been compressed down for storage.
 // -- Although a lambda closure is a virtual register pair (64-bit), we only need 32-bit
 //    to track the pointer when we are on 32-bit architectures.
 //    Both the compiler and the runtime therefore compress the closure down for 32-bit archs.
 #define LAMBDA_CLOSURE_COMPRESSED_POINTER_SIZE __SIZEOF_POINTER__
 ADD_TEST_EQ(static_cast<size_t>(LAMBDA_CLOSURE_COMPRESSED_POINTER_SIZE),
             sizeof(art::lambda::Closure*))

 // Working with boxed innate lambdas (as a mirror::Object) in raw memory:
 // --- Note that this layout only applies to lambdas originally made with create-lambda.
 // --- Boxing a lambda created from a new-instance instruction is simply the original object.
 //
 //     |---------------------|
 //     |   object header     |
 //     |---------------------|
 //     | lambda::Closure*    | <-- long on 64-bit, int on 32-bit
 //     |---------------------|
 #define MIRROR_OBJECT_BOXED_INNATE_LAMBDA_CLOSURE_POINTER_OFFSET (MIRROR_OBJECT_HEADER_SIZE)
 ADD_TEST_EQ(static_cast<size_t>(MIRROR_OBJECT_BOXED_INNATE_LAMBDA_CLOSURE_POINTER_OFFSET),
             art::mirror::LambdaProxy::GetInstanceFieldOffsetClosure().SizeValue())
             // Equivalent to (private) offsetof(art::mirror::LambdaProxy, closure_))

 // Working with boxed innate lambdas (as a mirror::Object) in raw memory:
 // --- Note that this layout only applies to lambdas originally made with create-lambda.
 // --- Boxing a lambda created from a new-instance instruction is simply the original object.
 //
 //     |---------------------|
 //     |   object header     |
 //     |---------------------|
 //     | lambda::Closure*    | <-- long on 64-bit, int on 32-bit
 //     |---------------------|
 #define ART_LAMBDA_METHOD_ART_METHOD_OFFSET (0)
 ADD_TEST_EQ(static_cast<size_t>(ART_LAMBDA_METHOD_ART_METHOD_OFFSET),
             art::lambda::ArtLambdaMethod::GetArtMethodOffset())

 #if defined(NDEBUG)
 // Release should be faaast. So just jump directly to the lambda method.
 #define LAMBDA_PROXY_SETUP_FRAME 0
 #else
 // Debug can be slower, and we want to get better stack traces. Set up a frame.
 #define LAMBDA_PROXY_SETUP_FRAME 1
 #endif

 // For WIP implementation, lambda types are all "longs"
 // which means on a 32-bit implementation we need to fill the argument with 32-bit 0s
 // whenever we invoke a method with a lambda in it.
 // TODO: remove all usages of this once we go to a proper \LambdaType; system.
 #define LAMBDA_INVOKE_USES_LONG 1

 #if defined(__cplusplus)
 }  // End of CheckAsmSupportOffsets.
 }  // namespace art
 #endif

 #endif  // ART_RUNTIME_ASM_SUPPORT_H_
	/*
	* Copyright (C) 2011 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_RUNTIME_ASM_SUPPORT_H_
	#define ART_RUNTIME_ASM_SUPPORT_H_

	#if defined(__cplusplus)
	#include "art_method.h"
	#include "lambda/art_lambda_method.h"
	#include "lambda/closure.h"
	#include "gc/allocator/rosalloc.h"
	#include "lock_word.h"
	#include "mirror/class.h"
	#include "mirror/lambda_proxy.h"
	#include "mirror/string.h"
	#include "runtime.h"
	#include "thread.h"
	#endif

	#include "read_barrier_c.h"

	#if defined(__arm__) \|\| defined(__mips__)
	// In quick code for ARM and MIPS we make poor use of registers and perform frequent suspend
	// checks in the event of loop back edges. The SUSPEND_CHECK_INTERVAL constant is loaded into a
	// register at the point of an up-call or after handling a suspend check. It reduces the number of
	// loads of the TLS suspend check value by the given amount (turning it into a decrement and compare
	// of a register). This increases the time for a thread to respond to requests from GC and the
	// debugger, damaging GC performance and creating other unwanted artifacts. For example, this count
	// has the effect of making loops and Java code look cold in profilers, where the count is reset
	// impacts where samples will occur. Reducing the count as much as possible improves profiler
	// accuracy in tools like traceview.
	// TODO: get a compiler that can do a proper job of loop optimization and remove this.
	#define SUSPEND_CHECK_INTERVAL 96
	#endif

	#if defined(__cplusplus)

	#ifndef ADD_TEST_EQ // Allow #include-r to replace with their own.
	#define ADD_TEST_EQ(x, y) CHECK_EQ(x, y);
	#endif

	namespace art {

	static inline void CheckAsmSupportOffsetsAndSizes() {
	#else
	#define ADD_TEST_EQ(x, y)
	#endif

	#if defined(__LP64__)
	#define POINTER_SIZE_SHIFT 3
	#else
	#define POINTER_SIZE_SHIFT 2
	#endif
	ADD_TEST_EQ(static_cast<size_t>(1U << POINTER_SIZE_SHIFT),
	static_cast<size_t>(__SIZEOF_POINTER__))

	// Size of references to the heap on the stack.
	#define STACK_REFERENCE_SIZE 4
	ADD_TEST_EQ(static_cast<size_t>(STACK_REFERENCE_SIZE), sizeof(art::StackReference<art::mirror::Object>))

	// Size of heap references
	#define COMPRESSED_REFERENCE_SIZE 4
	ADD_TEST_EQ(static_cast<size_t>(COMPRESSED_REFERENCE_SIZE),
	sizeof(art::mirror::CompressedReference<art::mirror::Object>))

	#define COMPRESSED_REFERENCE_SIZE_SHIFT 2
	ADD_TEST_EQ(static_cast<size_t>(1U << COMPRESSED_REFERENCE_SIZE_SHIFT),
	static_cast<size_t>(COMPRESSED_REFERENCE_SIZE))

	// Note: these callee save methods loads require read barriers.
	// Offset of field Runtime::callee_save_methods_[kSaveAll]
	#define RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET 0
	ADD_TEST_EQ(static_cast<size_t>(RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET),
	art::Runtime::GetCalleeSaveMethodOffset(art::Runtime::kSaveAll))

	// Offset of field Runtime::callee_save_methods_[kRefsOnly]
	#define RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET 8
	ADD_TEST_EQ(static_cast<size_t>(RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET),
	art::Runtime::GetCalleeSaveMethodOffset(art::Runtime::kRefsOnly))

	// Offset of field Runtime::callee_save_methods_[kRefsAndArgs]
	#define RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET (2 * 8)
	ADD_TEST_EQ(static_cast<size_t>(RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET),
	art::Runtime::GetCalleeSaveMethodOffset(art::Runtime::kRefsAndArgs))

	// Offset of field Thread::tls32_.state_and_flags.
	#define THREAD_FLAGS_OFFSET 0
	ADD_TEST_EQ(THREAD_FLAGS_OFFSET,
	art::Thread::ThreadFlagsOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offset of field Thread::tls32_.thin_lock_thread_id.
	#define THREAD_ID_OFFSET 12
	ADD_TEST_EQ(THREAD_ID_OFFSET,
	art::Thread::ThinLockIdOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offset of field Thread::tlsPtr_.card_table.
	#define THREAD_CARD_TABLE_OFFSET 128
	ADD_TEST_EQ(THREAD_CARD_TABLE_OFFSET,
	art::Thread::CardTableOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offset of field Thread::tlsPtr_.exception.
	#define THREAD_EXCEPTION_OFFSET (THREAD_CARD_TABLE_OFFSET + __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_EXCEPTION_OFFSET,
	art::Thread::ExceptionOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offset of field Thread::tlsPtr_.managed_stack.top_quick_frame_.
	#define THREAD_TOP_QUICK_FRAME_OFFSET (THREAD_CARD_TABLE_OFFSET + (3 * __SIZEOF_POINTER__))
	ADD_TEST_EQ(THREAD_TOP_QUICK_FRAME_OFFSET,
	art::Thread::TopOfManagedStackOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offset of field Thread::tlsPtr_.self.
	#define THREAD_SELF_OFFSET (THREAD_CARD_TABLE_OFFSET + (9 * __SIZEOF_POINTER__))
	ADD_TEST_EQ(THREAD_SELF_OFFSET,
	art::Thread::SelfOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offset of field Thread::tlsPtr_.thread_local_pos.
	#define THREAD_LOCAL_POS_OFFSET (THREAD_CARD_TABLE_OFFSET + 151 * __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_LOCAL_POS_OFFSET,
	art::Thread::ThreadLocalPosOffset<__SIZEOF_POINTER__>().Int32Value())
	// Offset of field Thread::tlsPtr_.thread_local_end.
	#define THREAD_LOCAL_END_OFFSET (THREAD_LOCAL_POS_OFFSET + __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_LOCAL_END_OFFSET,
	art::Thread::ThreadLocalEndOffset<__SIZEOF_POINTER__>().Int32Value())
	// Offset of field Thread::tlsPtr_.thread_local_objects.
	#define THREAD_LOCAL_OBJECTS_OFFSET (THREAD_LOCAL_POS_OFFSET + 2 * __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_LOCAL_OBJECTS_OFFSET,
	art::Thread::ThreadLocalObjectsOffset<__SIZEOF_POINTER__>().Int32Value())
	// Offset of field Thread::tlsPtr_.rosalloc_runs.
	#define THREAD_ROSALLOC_RUNS_OFFSET (THREAD_LOCAL_POS_OFFSET + 3 * __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_ROSALLOC_RUNS_OFFSET,
	art::Thread::RosAllocRunsOffset<__SIZEOF_POINTER__>().Int32Value())
	// Offset of field Thread::tlsPtr_.thread_local_alloc_stack_top.
	#define THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET (THREAD_ROSALLOC_RUNS_OFFSET + 34 * __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET,
	art::Thread::ThreadLocalAllocStackTopOffset<__SIZEOF_POINTER__>().Int32Value())
	// Offset of field Thread::tlsPtr_.thread_local_alloc_stack_end.
	#define THREAD_LOCAL_ALLOC_STACK_END_OFFSET (THREAD_ROSALLOC_RUNS_OFFSET + 35 * __SIZEOF_POINTER__)
	ADD_TEST_EQ(THREAD_LOCAL_ALLOC_STACK_END_OFFSET,
	art::Thread::ThreadLocalAllocStackEndOffset<__SIZEOF_POINTER__>().Int32Value())

	// Offsets within java.lang.Object.
	#define MIRROR_OBJECT_CLASS_OFFSET 0
	ADD_TEST_EQ(MIRROR_OBJECT_CLASS_OFFSET, art::mirror::Object::ClassOffset().Int32Value())
	#define MIRROR_OBJECT_LOCK_WORD_OFFSET 4
	ADD_TEST_EQ(MIRROR_OBJECT_LOCK_WORD_OFFSET, art::mirror::Object::MonitorOffset().Int32Value())

	#if defined(USE_BROOKS_READ_BARRIER)
	#define MIRROR_OBJECT_HEADER_SIZE 16
	#else
	#define MIRROR_OBJECT_HEADER_SIZE 8
	#endif
	ADD_TEST_EQ(size_t(MIRROR_OBJECT_HEADER_SIZE), sizeof(art::mirror::Object))

	// Offsets within java.lang.Class.
	#define MIRROR_CLASS_COMPONENT_TYPE_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_CLASS_COMPONENT_TYPE_OFFSET,
	art::mirror::Class::ComponentTypeOffset().Int32Value())
	#define MIRROR_CLASS_ACCESS_FLAGS_OFFSET (36 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_CLASS_ACCESS_FLAGS_OFFSET,
	art::mirror::Class::AccessFlagsOffset().Int32Value())
	#define MIRROR_CLASS_OBJECT_SIZE_OFFSET (108 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_CLASS_OBJECT_SIZE_OFFSET,
	art::mirror::Class::ObjectSizeOffset().Int32Value())
	#define MIRROR_CLASS_STATUS_OFFSET (120 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_CLASS_STATUS_OFFSET,
	art::mirror::Class::StatusOffset().Int32Value())

	#define MIRROR_CLASS_STATUS_INITIALIZED 10
	ADD_TEST_EQ(static_cast<uint32_t>(MIRROR_CLASS_STATUS_INITIALIZED),
	static_cast<uint32_t>(art::mirror::Class::kStatusInitialized))
	#define ACCESS_FLAGS_CLASS_IS_FINALIZABLE 0x80000000
	ADD_TEST_EQ(static_cast<uint32_t>(ACCESS_FLAGS_CLASS_IS_FINALIZABLE),
	static_cast<uint32_t>(art::kAccClassIsFinalizable))

	// Array offsets.
	#define MIRROR_ARRAY_LENGTH_OFFSET MIRROR_OBJECT_HEADER_SIZE
	ADD_TEST_EQ(MIRROR_ARRAY_LENGTH_OFFSET, art::mirror::Array::LengthOffset().Int32Value())

	#define MIRROR_CHAR_ARRAY_DATA_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_CHAR_ARRAY_DATA_OFFSET,
	art::mirror::Array::DataOffset(sizeof(uint16_t)).Int32Value())

	#define MIRROR_OBJECT_ARRAY_DATA_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_OBJECT_ARRAY_DATA_OFFSET,
	art::mirror::Array::DataOffset(
	sizeof(art::mirror::HeapReference<art::mirror::Object>)).Int32Value())

	#define MIRROR_OBJECT_ARRAY_COMPONENT_SIZE 4
	ADD_TEST_EQ(static_cast<size_t>(MIRROR_OBJECT_ARRAY_COMPONENT_SIZE),
	sizeof(art::mirror::HeapReference<art::mirror::Object>))

	#define MIRROR_LONG_ARRAY_DATA_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_LONG_ARRAY_DATA_OFFSET,
	art::mirror::Array::DataOffset(sizeof(uint64_t)).Int32Value())

	// Offsets within java.lang.String.
	#define MIRROR_STRING_COUNT_OFFSET MIRROR_OBJECT_HEADER_SIZE
	ADD_TEST_EQ(MIRROR_STRING_COUNT_OFFSET, art::mirror::String::CountOffset().Int32Value())

	#define MIRROR_STRING_VALUE_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(MIRROR_STRING_VALUE_OFFSET, art::mirror::String::ValueOffset().Int32Value())

	// Offsets within java.lang.reflect.ArtMethod.
	#define ART_METHOD_DEX_CACHE_METHODS_OFFSET_32 20
	ADD_TEST_EQ(ART_METHOD_DEX_CACHE_METHODS_OFFSET_32,
	art::ArtMethod::DexCacheResolvedMethodsOffset(4).Int32Value())

	#define ART_METHOD_DEX_CACHE_METHODS_OFFSET_64 24
	ADD_TEST_EQ(ART_METHOD_DEX_CACHE_METHODS_OFFSET_64,
	art::ArtMethod::DexCacheResolvedMethodsOffset(8).Int32Value())

	#define ART_METHOD_DEX_CACHE_TYPES_OFFSET_32 24
	ADD_TEST_EQ(ART_METHOD_DEX_CACHE_TYPES_OFFSET_32,
	art::ArtMethod::DexCacheResolvedTypesOffset(4).Int32Value())

	#define ART_METHOD_DEX_CACHE_TYPES_OFFSET_64 32
	ADD_TEST_EQ(ART_METHOD_DEX_CACHE_TYPES_OFFSET_64,
	art::ArtMethod::DexCacheResolvedTypesOffset(8).Int32Value())

	#define ART_METHOD_QUICK_CODE_OFFSET_32 32
	ADD_TEST_EQ(ART_METHOD_QUICK_CODE_OFFSET_32,
	art::ArtMethod::EntryPointFromQuickCompiledCodeOffset(4).Int32Value())

	#define ART_METHOD_QUICK_CODE_OFFSET_64 48
	ADD_TEST_EQ(ART_METHOD_QUICK_CODE_OFFSET_64,
	art::ArtMethod::EntryPointFromQuickCompiledCodeOffset(8).Int32Value())

	#define LOCK_WORD_STATE_SHIFT 30
	ADD_TEST_EQ(LOCK_WORD_STATE_SHIFT, static_cast<int32_t>(art::LockWord::kStateShift))

	#define LOCK_WORD_STATE_MASK 0xC0000000
	ADD_TEST_EQ(LOCK_WORD_STATE_MASK, static_cast<uint32_t>(art::LockWord::kStateMaskShifted))

	#define LOCK_WORD_READ_BARRIER_STATE_SHIFT 28
	ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_SHIFT,
	static_cast<int32_t>(art::LockWord::kReadBarrierStateShift))

	#define LOCK_WORD_READ_BARRIER_STATE_MASK 0x30000000
	ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_MASK,
	static_cast<int32_t>(art::LockWord::kReadBarrierStateMaskShifted))

	#define LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED 0xCFFFFFFF
	ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED,
	static_cast<uint32_t>(art::LockWord::kReadBarrierStateMaskShiftedToggled))

	#define LOCK_WORD_THIN_LOCK_COUNT_ONE 65536
	ADD_TEST_EQ(LOCK_WORD_THIN_LOCK_COUNT_ONE, static_cast<int32_t>(art::LockWord::kThinLockCountOne))

	#define OBJECT_ALIGNMENT_MASK 7
	ADD_TEST_EQ(static_cast<size_t>(OBJECT_ALIGNMENT_MASK), art::kObjectAlignment - 1)

	#define OBJECT_ALIGNMENT_MASK_TOGGLED 0xFFFFFFF8
	ADD_TEST_EQ(static_cast<uint32_t>(OBJECT_ALIGNMENT_MASK_TOGGLED),
	~static_cast<uint32_t>(art::kObjectAlignment - 1))

	#define ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE 128
	ADD_TEST_EQ(ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::kMaxThreadLocalBracketSize))

	#define ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT 4
	ADD_TEST_EQ(ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::kBracketQuantumSizeShift))

	#define ROSALLOC_BRACKET_QUANTUM_SIZE_MASK 15
	ADD_TEST_EQ(ROSALLOC_BRACKET_QUANTUM_SIZE_MASK,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::kBracketQuantumSize - 1))

	#define ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED32 0xfffffff0
	ADD_TEST_EQ(static_cast<uint32_t>(ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED32),
	~static_cast<uint32_t>(art::gc::allocator::RosAlloc::kBracketQuantumSize - 1))

	#define ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED64 0xfffffffffffffff0
	ADD_TEST_EQ(static_cast<uint64_t>(ROSALLOC_BRACKET_QUANTUM_SIZE_MASK_TOGGLED64),
	~static_cast<uint64_t>(art::gc::allocator::RosAlloc::kBracketQuantumSize - 1))

	#define ROSALLOC_RUN_FREE_LIST_OFFSET 8
	ADD_TEST_EQ(ROSALLOC_RUN_FREE_LIST_OFFSET,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::RunFreeListOffset()))

	#define ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET 0
	ADD_TEST_EQ(ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::RunFreeListHeadOffset()))

	#define ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET 16
	ADD_TEST_EQ(ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::RunFreeListSizeOffset()))

	#define ROSALLOC_SLOT_NEXT_OFFSET 0
	ADD_TEST_EQ(ROSALLOC_SLOT_NEXT_OFFSET,
	static_cast<int32_t>(art::gc::allocator::RosAlloc::RunSlotNextOffset()))
	// Assert this so that we can avoid zeroing the next field by installing the class pointer.
	ADD_TEST_EQ(ROSALLOC_SLOT_NEXT_OFFSET, MIRROR_OBJECT_CLASS_OFFSET)
	// Working with raw lambdas (lambda::Closure) in raw memory:
	//
	// \|---------------------\|
	// \| ArtLambdaMethod* \| <-- pointer to lambda art method, has the info like the size.
	// \|---------------------\| <-- 'data offset'
	// \| [ Dynamic Size ] \| <-- OPTIONAL: only if the ArtLambdaMethod::dynamic_size_ is true.
	// \|---------------------\|
	// \| Captured Variables \|
	// \| ... \|
	// \|---------------------\| <-- total length determined by "dynamic size" if it is present,
	// otherwise by the ArtLambdaMethod::static_size_

	// Offset from start of lambda::Closure to the ArtLambdaMethod*.
	#define LAMBDA_CLOSURE_METHOD_OFFSET 0
	ADD_TEST_EQ(static_cast<size_t>(LAMBDA_CLOSURE_METHOD_OFFSET),
	offsetof(art::lambda::ClosureStorage, lambda_info_))
	// Offset from the start of lambda::Closure to the data (captured vars or dynamic size).
	#define LAMBDA_CLOSURE_DATA_OFFSET __SIZEOF_POINTER__
	ADD_TEST_EQ(static_cast<size_t>(LAMBDA_CLOSURE_DATA_OFFSET),
	offsetof(art::lambda::ClosureStorage, captured_))
	// Offsets to captured variables intentionally omitted as it needs a runtime branch.

	// The size of a lambda closure after it's been compressed down for storage.
	// -- Although a lambda closure is a virtual register pair (64-bit), we only need 32-bit
	// to track the pointer when we are on 32-bit architectures.
	// Both the compiler and the runtime therefore compress the closure down for 32-bit archs.
	#define LAMBDA_CLOSURE_COMPRESSED_POINTER_SIZE __SIZEOF_POINTER__
	ADD_TEST_EQ(static_cast<size_t>(LAMBDA_CLOSURE_COMPRESSED_POINTER_SIZE),
	sizeof(art::lambda::Closure*))

	// Working with boxed innate lambdas (as a mirror::Object) in raw memory:
	// --- Note that this layout only applies to lambdas originally made with create-lambda.
	// --- Boxing a lambda created from a new-instance instruction is simply the original object.
	//
	// \|---------------------\|
	// \| object header \|
	// \|---------------------\|
	// \| lambda::Closure* \| <-- long on 64-bit, int on 32-bit
	// \|---------------------\|
	#define MIRROR_OBJECT_BOXED_INNATE_LAMBDA_CLOSURE_POINTER_OFFSET (MIRROR_OBJECT_HEADER_SIZE)
	ADD_TEST_EQ(static_cast<size_t>(MIRROR_OBJECT_BOXED_INNATE_LAMBDA_CLOSURE_POINTER_OFFSET),
	art::mirror::LambdaProxy::GetInstanceFieldOffsetClosure().SizeValue())
	// Equivalent to (private) offsetof(art::mirror::LambdaProxy, closure_))

	// Working with boxed innate lambdas (as a mirror::Object) in raw memory:
	// --- Note that this layout only applies to lambdas originally made with create-lambda.
	// --- Boxing a lambda created from a new-instance instruction is simply the original object.
	//
	// \|---------------------\|
	// \| object header \|
	// \|---------------------\|
	// \| lambda::Closure* \| <-- long on 64-bit, int on 32-bit
	// \|---------------------\|
	#define ART_LAMBDA_METHOD_ART_METHOD_OFFSET (0)
	ADD_TEST_EQ(static_cast<size_t>(ART_LAMBDA_METHOD_ART_METHOD_OFFSET),
	art::lambda::ArtLambdaMethod::GetArtMethodOffset())

	#if defined(NDEBUG)
	// Release should be faaast. So just jump directly to the lambda method.
	#define LAMBDA_PROXY_SETUP_FRAME 0
	#else
	// Debug can be slower, and we want to get better stack traces. Set up a frame.
	#define LAMBDA_PROXY_SETUP_FRAME 1
	#endif

	// For WIP implementation, lambda types are all "longs"
	// which means on a 32-bit implementation we need to fill the argument with 32-bit 0s
	// whenever we invoke a method with a lambda in it.
	// TODO: remove all usages of this once we go to a proper \LambdaType; system.
	#define LAMBDA_INVOKE_USES_LONG 1

	#if defined(__cplusplus)
	} // End of CheckAsmSupportOffsets.
	} // namespace art
	#endif

	#endif // ART_RUNTIME_ASM_SUPPORT_H_