1 /* 2 * Copyright (C) 2011 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_ASM_SUPPORT_H_ 18 #define ART_RUNTIME_ASM_SUPPORT_H_ 19 20 #include "read_barrier_c.h" 21 22 #if defined(__arm__) || defined(__mips__) 23 // In quick code for ARM and MIPS we make poor use of registers and perform frequent suspend 24 // checks in the event of loop back edges. The SUSPEND_CHECK_INTERVAL constant is loaded into a 25 // register at the point of an up-call or after handling a suspend check. It reduces the number of 26 // loads of the TLS suspend check value by the given amount (turning it into a decrement and compare 27 // of a register). This increases the time for a thread to respond to requests from GC and the 28 // debugger, damaging GC performance and creating other unwanted artifacts. For example, this count 29 // has the effect of making loops and Java code look cold in profilers, where the count is reset 30 // impacts where samples will occur. Reducing the count as much as possible improves profiler 31 // accuracy in tools like traceview. 32 // TODO: get a compiler that can do a proper job of loop optimization and remove this. 33 #define SUSPEND_CHECK_INTERVAL 96 34 #endif 35 36 // To generate tests related to the constants in this header, either define ADD_TEST_EQ before 37 // including, or use asm_support_check.h. 38 #ifndef ADD_TEST_EQ // Allow #include-r to replace with their own. 39 #define DEFINED_ADD_TEST_EQ 1 40 #define ADD_TEST_EQ(x, y) 41 #endif 42 43 #if defined(__LP64__) 44 #define POINTER_SIZE_SHIFT 3 45 #define POINTER_SIZE art::PointerSize::k64 46 #else 47 #define POINTER_SIZE_SHIFT 2 48 #define POINTER_SIZE art::PointerSize::k32 49 #endif 50 ADD_TEST_EQ(static_cast<size_t>(1U << POINTER_SIZE_SHIFT), 51 static_cast<size_t>(__SIZEOF_POINTER__)) 52 53 // Import platform-independent constant defines from our autogenerated list. 54 // Export new defines (for assembly use) by editing cpp-define-generator def files. 55 #define DEFINE_CHECK_EQ ADD_TEST_EQ 56 #include "asm_support_gen.h" 57 #undef DEFINE_CHECK_EQ 58 59 // Offset of field Thread::tlsPtr_.exception. 60 #define THREAD_EXCEPTION_OFFSET (THREAD_CARD_TABLE_OFFSET + __SIZEOF_POINTER__) 61 ADD_TEST_EQ(THREAD_EXCEPTION_OFFSET, 62 art::Thread::ExceptionOffset<POINTER_SIZE>().Int32Value()) 63 64 // Offset of field Thread::tlsPtr_.managed_stack.top_quick_frame_. 65 #define THREAD_TOP_QUICK_FRAME_OFFSET (THREAD_CARD_TABLE_OFFSET + (3 * __SIZEOF_POINTER__)) 66 ADD_TEST_EQ(THREAD_TOP_QUICK_FRAME_OFFSET, 67 art::Thread::TopOfManagedStackOffset<POINTER_SIZE>().Int32Value()) 68 69 // Offset of field Thread::tlsPtr_.self. 70 #define THREAD_SELF_OFFSET (THREAD_CARD_TABLE_OFFSET + (9 * __SIZEOF_POINTER__)) 71 ADD_TEST_EQ(THREAD_SELF_OFFSET, 72 art::Thread::SelfOffset<POINTER_SIZE>().Int32Value()) 73 74 // Offset of field Thread::tlsPtr_.thread_local_pos. 75 #define THREAD_LOCAL_POS_OFFSET (THREAD_CARD_TABLE_OFFSET + 34 * __SIZEOF_POINTER__) 76 ADD_TEST_EQ(THREAD_LOCAL_POS_OFFSET, 77 art::Thread::ThreadLocalPosOffset<POINTER_SIZE>().Int32Value()) 78 // Offset of field Thread::tlsPtr_.thread_local_end. 79 #define THREAD_LOCAL_END_OFFSET (THREAD_LOCAL_POS_OFFSET + __SIZEOF_POINTER__) 80 ADD_TEST_EQ(THREAD_LOCAL_END_OFFSET, 81 art::Thread::ThreadLocalEndOffset<POINTER_SIZE>().Int32Value()) 82 // Offset of field Thread::tlsPtr_.thread_local_objects. 83 #define THREAD_LOCAL_OBJECTS_OFFSET (THREAD_LOCAL_END_OFFSET + 2 * __SIZEOF_POINTER__) 84 ADD_TEST_EQ(THREAD_LOCAL_OBJECTS_OFFSET, 85 art::Thread::ThreadLocalObjectsOffset<POINTER_SIZE>().Int32Value()) 86 87 // Offset of field Thread::tlsPtr_.mterp_current_ibase. 88 #define THREAD_CURRENT_IBASE_OFFSET \ 89 (THREAD_LOCAL_OBJECTS_OFFSET + __SIZEOF_SIZE_T__ + (1 + 161) * __SIZEOF_POINTER__) 90 ADD_TEST_EQ(THREAD_CURRENT_IBASE_OFFSET, 91 art::Thread::MterpCurrentIBaseOffset<POINTER_SIZE>().Int32Value()) 92 // Offset of field Thread::tlsPtr_.mterp_default_ibase. 93 #define THREAD_DEFAULT_IBASE_OFFSET (THREAD_CURRENT_IBASE_OFFSET + __SIZEOF_POINTER__) 94 ADD_TEST_EQ(THREAD_DEFAULT_IBASE_OFFSET, 95 art::Thread::MterpDefaultIBaseOffset<POINTER_SIZE>().Int32Value()) 96 // Offset of field Thread::tlsPtr_.mterp_alt_ibase. 97 #define THREAD_ALT_IBASE_OFFSET (THREAD_DEFAULT_IBASE_OFFSET + __SIZEOF_POINTER__) 98 ADD_TEST_EQ(THREAD_ALT_IBASE_OFFSET, 99 art::Thread::MterpAltIBaseOffset<POINTER_SIZE>().Int32Value()) 100 // Offset of field Thread::tlsPtr_.rosalloc_runs. 101 #define THREAD_ROSALLOC_RUNS_OFFSET (THREAD_ALT_IBASE_OFFSET + __SIZEOF_POINTER__) 102 ADD_TEST_EQ(THREAD_ROSALLOC_RUNS_OFFSET, 103 art::Thread::RosAllocRunsOffset<POINTER_SIZE>().Int32Value()) 104 // Offset of field Thread::tlsPtr_.thread_local_alloc_stack_top. 105 #define THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET (THREAD_ROSALLOC_RUNS_OFFSET + 16 * __SIZEOF_POINTER__) 106 ADD_TEST_EQ(THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET, 107 art::Thread::ThreadLocalAllocStackTopOffset<POINTER_SIZE>().Int32Value()) 108 // Offset of field Thread::tlsPtr_.thread_local_alloc_stack_end. 109 #define THREAD_LOCAL_ALLOC_STACK_END_OFFSET (THREAD_ROSALLOC_RUNS_OFFSET + 17 * __SIZEOF_POINTER__) 110 ADD_TEST_EQ(THREAD_LOCAL_ALLOC_STACK_END_OFFSET, 111 art::Thread::ThreadLocalAllocStackEndOffset<POINTER_SIZE>().Int32Value()) 112 113 // Offsets within ShadowFrame. 114 #define SHADOWFRAME_LINK_OFFSET 0 115 ADD_TEST_EQ(SHADOWFRAME_LINK_OFFSET, 116 static_cast<int32_t>(art::ShadowFrame::LinkOffset())) 117 #define SHADOWFRAME_METHOD_OFFSET (SHADOWFRAME_LINK_OFFSET + 1 * __SIZEOF_POINTER__) 118 ADD_TEST_EQ(SHADOWFRAME_METHOD_OFFSET, 119 static_cast<int32_t>(art::ShadowFrame::MethodOffset())) 120 #define SHADOWFRAME_RESULT_REGISTER_OFFSET (SHADOWFRAME_LINK_OFFSET + 2 * __SIZEOF_POINTER__) 121 ADD_TEST_EQ(SHADOWFRAME_RESULT_REGISTER_OFFSET, 122 static_cast<int32_t>(art::ShadowFrame::ResultRegisterOffset())) 123 #define SHADOWFRAME_DEX_PC_PTR_OFFSET (SHADOWFRAME_LINK_OFFSET + 3 * __SIZEOF_POINTER__) 124 ADD_TEST_EQ(SHADOWFRAME_DEX_PC_PTR_OFFSET, 125 static_cast<int32_t>(art::ShadowFrame::DexPCPtrOffset())) 126 #define SHADOWFRAME_CODE_ITEM_OFFSET (SHADOWFRAME_LINK_OFFSET + 4 * __SIZEOF_POINTER__) 127 ADD_TEST_EQ(SHADOWFRAME_CODE_ITEM_OFFSET, 128 static_cast<int32_t>(art::ShadowFrame::CodeItemOffset())) 129 #define SHADOWFRAME_LOCK_COUNT_DATA_OFFSET (SHADOWFRAME_LINK_OFFSET + 5 * __SIZEOF_POINTER__) 130 ADD_TEST_EQ(SHADOWFRAME_LOCK_COUNT_DATA_OFFSET, 131 static_cast<int32_t>(art::ShadowFrame::LockCountDataOffset())) 132 #define SHADOWFRAME_NUMBER_OF_VREGS_OFFSET (SHADOWFRAME_LINK_OFFSET + 6 * __SIZEOF_POINTER__) 133 ADD_TEST_EQ(SHADOWFRAME_NUMBER_OF_VREGS_OFFSET, 134 static_cast<int32_t>(art::ShadowFrame::NumberOfVRegsOffset())) 135 #define SHADOWFRAME_DEX_PC_OFFSET (SHADOWFRAME_NUMBER_OF_VREGS_OFFSET + 4) 136 ADD_TEST_EQ(SHADOWFRAME_DEX_PC_OFFSET, 137 static_cast<int32_t>(art::ShadowFrame::DexPCOffset())) 138 #define SHADOWFRAME_CACHED_HOTNESS_COUNTDOWN_OFFSET (SHADOWFRAME_NUMBER_OF_VREGS_OFFSET + 8) 139 ADD_TEST_EQ(SHADOWFRAME_CACHED_HOTNESS_COUNTDOWN_OFFSET, 140 static_cast<int32_t>(art::ShadowFrame::CachedHotnessCountdownOffset())) 141 #define SHADOWFRAME_HOTNESS_COUNTDOWN_OFFSET (SHADOWFRAME_NUMBER_OF_VREGS_OFFSET + 10) 142 ADD_TEST_EQ(SHADOWFRAME_HOTNESS_COUNTDOWN_OFFSET, 143 static_cast<int32_t>(art::ShadowFrame::HotnessCountdownOffset())) 144 #define SHADOWFRAME_VREGS_OFFSET (SHADOWFRAME_NUMBER_OF_VREGS_OFFSET + 12) 145 ADD_TEST_EQ(SHADOWFRAME_VREGS_OFFSET, 146 static_cast<int32_t>(art::ShadowFrame::VRegsOffset())) 147 148 #if defined(USE_BROOKS_READ_BARRIER) 149 #define MIRROR_OBJECT_HEADER_SIZE 16 150 #else 151 #define MIRROR_OBJECT_HEADER_SIZE 8 152 #endif 153 ADD_TEST_EQ(size_t(MIRROR_OBJECT_HEADER_SIZE), sizeof(art::mirror::Object)) 154 155 // Offsets within java.lang.Class. 156 #define MIRROR_CLASS_COMPONENT_TYPE_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE) 157 ADD_TEST_EQ(MIRROR_CLASS_COMPONENT_TYPE_OFFSET, 158 art::mirror::Class::ComponentTypeOffset().Int32Value()) 159 #define MIRROR_CLASS_IF_TABLE_OFFSET (16 + MIRROR_OBJECT_HEADER_SIZE) 160 ADD_TEST_EQ(MIRROR_CLASS_IF_TABLE_OFFSET, 161 art::mirror::Class::IfTableOffset().Int32Value()) 162 #define MIRROR_CLASS_ACCESS_FLAGS_OFFSET (56 + MIRROR_OBJECT_HEADER_SIZE) 163 ADD_TEST_EQ(MIRROR_CLASS_ACCESS_FLAGS_OFFSET, 164 art::mirror::Class::AccessFlagsOffset().Int32Value()) 165 #define MIRROR_CLASS_OBJECT_SIZE_OFFSET (88 + MIRROR_OBJECT_HEADER_SIZE) 166 ADD_TEST_EQ(MIRROR_CLASS_OBJECT_SIZE_OFFSET, 167 art::mirror::Class::ObjectSizeOffset().Int32Value()) 168 #define MIRROR_CLASS_OBJECT_SIZE_ALLOC_FAST_PATH_OFFSET (92 + MIRROR_OBJECT_HEADER_SIZE) 169 ADD_TEST_EQ(MIRROR_CLASS_OBJECT_SIZE_ALLOC_FAST_PATH_OFFSET, 170 art::mirror::Class::ObjectSizeAllocFastPathOffset().Int32Value()) 171 #define MIRROR_CLASS_OBJECT_PRIMITIVE_TYPE_OFFSET (96 + MIRROR_OBJECT_HEADER_SIZE) 172 ADD_TEST_EQ(MIRROR_CLASS_OBJECT_PRIMITIVE_TYPE_OFFSET, 173 art::mirror::Class::PrimitiveTypeOffset().Int32Value()) 174 #define MIRROR_CLASS_STATUS_OFFSET (104 + MIRROR_OBJECT_HEADER_SIZE) 175 ADD_TEST_EQ(MIRROR_CLASS_STATUS_OFFSET, 176 art::mirror::Class::StatusOffset().Int32Value()) 177 178 #define PRIMITIVE_TYPE_SIZE_SHIFT_SHIFT 16 179 ADD_TEST_EQ(PRIMITIVE_TYPE_SIZE_SHIFT_SHIFT, 180 static_cast<int>(art::mirror::Class::kPrimitiveTypeSizeShiftShift)) 181 182 // Array offsets. 183 #define MIRROR_ARRAY_LENGTH_OFFSET MIRROR_OBJECT_HEADER_SIZE 184 ADD_TEST_EQ(MIRROR_ARRAY_LENGTH_OFFSET, art::mirror::Array::LengthOffset().Int32Value()) 185 186 #define MIRROR_CHAR_ARRAY_DATA_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE) 187 ADD_TEST_EQ(MIRROR_CHAR_ARRAY_DATA_OFFSET, 188 art::mirror::Array::DataOffset(sizeof(uint16_t)).Int32Value()) 189 190 #define MIRROR_BOOLEAN_ARRAY_DATA_OFFSET MIRROR_CHAR_ARRAY_DATA_OFFSET 191 ADD_TEST_EQ(MIRROR_BOOLEAN_ARRAY_DATA_OFFSET, 192 art::mirror::Array::DataOffset(sizeof(uint8_t)).Int32Value()) 193 194 #define MIRROR_BYTE_ARRAY_DATA_OFFSET MIRROR_CHAR_ARRAY_DATA_OFFSET 195 ADD_TEST_EQ(MIRROR_BYTE_ARRAY_DATA_OFFSET, 196 art::mirror::Array::DataOffset(sizeof(int8_t)).Int32Value()) 197 198 #define MIRROR_SHORT_ARRAY_DATA_OFFSET MIRROR_CHAR_ARRAY_DATA_OFFSET 199 ADD_TEST_EQ(MIRROR_SHORT_ARRAY_DATA_OFFSET, 200 art::mirror::Array::DataOffset(sizeof(int16_t)).Int32Value()) 201 202 #define MIRROR_INT_ARRAY_DATA_OFFSET MIRROR_CHAR_ARRAY_DATA_OFFSET 203 ADD_TEST_EQ(MIRROR_INT_ARRAY_DATA_OFFSET, 204 art::mirror::Array::DataOffset(sizeof(int32_t)).Int32Value()) 205 206 #define MIRROR_WIDE_ARRAY_DATA_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE) 207 ADD_TEST_EQ(MIRROR_WIDE_ARRAY_DATA_OFFSET, 208 art::mirror::Array::DataOffset(sizeof(uint64_t)).Int32Value()) 209 210 #define MIRROR_OBJECT_ARRAY_DATA_OFFSET (4 + MIRROR_OBJECT_HEADER_SIZE) 211 ADD_TEST_EQ(MIRROR_OBJECT_ARRAY_DATA_OFFSET, 212 art::mirror::Array::DataOffset( 213 sizeof(art::mirror::HeapReference<art::mirror::Object>)).Int32Value()) 214 215 #define MIRROR_OBJECT_ARRAY_COMPONENT_SIZE 4 216 ADD_TEST_EQ(static_cast<size_t>(MIRROR_OBJECT_ARRAY_COMPONENT_SIZE), 217 sizeof(art::mirror::HeapReference<art::mirror::Object>)) 218 219 #define MIRROR_LONG_ARRAY_DATA_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE) 220 ADD_TEST_EQ(MIRROR_LONG_ARRAY_DATA_OFFSET, 221 art::mirror::Array::DataOffset(sizeof(uint64_t)).Int32Value()) 222 223 // Offsets within java.lang.String. 224 #define MIRROR_STRING_COUNT_OFFSET MIRROR_OBJECT_HEADER_SIZE 225 ADD_TEST_EQ(MIRROR_STRING_COUNT_OFFSET, art::mirror::String::CountOffset().Int32Value()) 226 227 #define MIRROR_STRING_VALUE_OFFSET (8 + MIRROR_OBJECT_HEADER_SIZE) 228 ADD_TEST_EQ(MIRROR_STRING_VALUE_OFFSET, art::mirror::String::ValueOffset().Int32Value()) 229 230 // String compression feature. 231 #define STRING_COMPRESSION_FEATURE 1 232 ADD_TEST_EQ(STRING_COMPRESSION_FEATURE, art::mirror::kUseStringCompression); 233 234 #ifdef DEFINED_ADD_TEST_EQ 235 #undef ADD_TEST_EQ 236 #undef DEFINED_ADD_TEST_EQ 237 #endif 238 239 #endif // ART_RUNTIME_ASM_SUPPORT_H_ 240
