| /* |
| * 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 "lock_word.h" |
| #include "mirror/art_method.h" |
| #include "mirror/class.h" |
| #include "mirror/string.h" |
| #include "runtime.h" |
| #include "thread.h" |
| #endif |
| |
| #include "read_barrier_c.h" |
| |
| #if defined(__arm__) || defined(__aarch64__) || defined(__mips__) |
| // In quick code for ARM, ARM64 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 |
| |
| static inline void CheckAsmSupportOffsetsAndSizes() { |
| #else |
| #define ADD_TEST_EQ(x, y) |
| #endif |
| |
| // 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>)) |
| |
| // 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 __SIZEOF_POINTER__ |
| 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 * __SIZEOF_POINTER__) |
| 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 120 |
| 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_.managed_stack.top_quick_frame_. |
| #define THREAD_SELF_OFFSET (THREAD_CARD_TABLE_OFFSET + (8 * __SIZEOF_POINTER__)) |
| ADD_TEST_EQ(THREAD_SELF_OFFSET, |
| art::Thread::SelfOffset<__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_BAKER_OR_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 (4 + MIRROR_OBJECT_HEADER_SIZE) |
| ADD_TEST_EQ(MIRROR_CLASS_COMPONENT_TYPE_OFFSET, |
| art::mirror::Class::ComponentTypeOffset().Int32Value()) |
| |
| // 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()) |
| |
| // Offsets within java.lang.String. |
| #define MIRROR_STRING_VALUE_OFFSET MIRROR_OBJECT_HEADER_SIZE |
| ADD_TEST_EQ(MIRROR_STRING_VALUE_OFFSET, art::mirror::String::ValueOffset().Int32Value()) |
| |
| #define MIRROR_STRING_COUNT_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE) |
| ADD_TEST_EQ(MIRROR_STRING_COUNT_OFFSET, art::mirror::String::CountOffset().Int32Value()) |
| |
| #define MIRROR_STRING_OFFSET_OFFSET (12 + MIRROR_OBJECT_HEADER_SIZE) |
| ADD_TEST_EQ(MIRROR_STRING_OFFSET_OFFSET, art::mirror::String::OffsetOffset().Int32Value()) |
| |
| // Offsets within java.lang.reflect.ArtMethod. |
| #define MIRROR_ART_METHOD_DEX_CACHE_METHODS_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE) |
| ADD_TEST_EQ(MIRROR_ART_METHOD_DEX_CACHE_METHODS_OFFSET, |
| art::mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value()) |
| |
| #define MIRROR_ART_METHOD_QUICK_CODE_OFFSET_32 (36 + MIRROR_OBJECT_HEADER_SIZE) |
| ADD_TEST_EQ(MIRROR_ART_METHOD_QUICK_CODE_OFFSET_32, |
| art::mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset(4).Int32Value()) |
| |
| #define MIRROR_ART_METHOD_QUICK_CODE_OFFSET_64 (48 + MIRROR_OBJECT_HEADER_SIZE) |
| ADD_TEST_EQ(MIRROR_ART_METHOD_QUICK_CODE_OFFSET_64, |
| art::mirror::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)) |
| |
| #if defined(__cplusplus) |
| } // End of CheckAsmSupportOffsets. |
| #endif |
| |
| #endif // ART_RUNTIME_ASM_SUPPORT_H_ |