Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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_COMPILER_OPTIMIZING_CODE_GENERATOR_H_ |
| 18 | #define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_H_ |
| 19 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 20 | #include "base/bit_field.h" |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 21 | #include "globals.h" |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 22 | #include "instruction_set.h" |
Nicolas Geoffray | 4e3d23a | 2014-05-22 18:32:45 +0100 | [diff] [blame] | 23 | #include "locations.h" |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 24 | #include "memory_region.h" |
| 25 | #include "nodes.h" |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 26 | #include "stack_map_stream.h" |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 27 | |
| 28 | namespace art { |
| 29 | |
Nicolas Geoffray | a747a39 | 2014-04-17 14:56:23 +0100 | [diff] [blame] | 30 | static size_t constexpr kVRegSize = 4; |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 31 | static size_t constexpr kUninitializedFrameSize = 0; |
Nicolas Geoffray | a747a39 | 2014-04-17 14:56:23 +0100 | [diff] [blame] | 32 | |
Nicolas Geoffray | 92a73ae | 2014-10-16 11:12:52 +0100 | [diff] [blame] | 33 | class Assembler; |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 34 | class CodeGenerator; |
Nicolas Geoffray | 92cf83e | 2014-03-18 17:59:20 +0000 | [diff] [blame] | 35 | class DexCompilationUnit; |
Nicolas Geoffray | f0e3937 | 2014-11-12 17:50:07 +0000 | [diff] [blame^] | 36 | class ParallelMoveResolver; |
Yevgeny Rouban | e3ea838 | 2014-08-08 16:29:38 +0700 | [diff] [blame] | 37 | class SrcMap; |
Nicolas Geoffray | 92cf83e | 2014-03-18 17:59:20 +0000 | [diff] [blame] | 38 | |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 39 | class CodeAllocator { |
| 40 | public: |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 41 | CodeAllocator() {} |
| 42 | virtual ~CodeAllocator() {} |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 43 | |
| 44 | virtual uint8_t* Allocate(size_t size) = 0; |
| 45 | |
| 46 | private: |
| 47 | DISALLOW_COPY_AND_ASSIGN(CodeAllocator); |
| 48 | }; |
| 49 | |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 50 | struct PcInfo { |
| 51 | uint32_t dex_pc; |
| 52 | uintptr_t native_pc; |
| 53 | }; |
| 54 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 55 | class SlowPathCode : public ArenaObject<kArenaAllocSlowPaths> { |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 56 | public: |
Nicolas Geoffray | 92a73ae | 2014-10-16 11:12:52 +0100 | [diff] [blame] | 57 | SlowPathCode() {} |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 58 | virtual ~SlowPathCode() {} |
| 59 | |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 60 | virtual void EmitNativeCode(CodeGenerator* codegen) = 0; |
| 61 | |
| 62 | private: |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 63 | DISALLOW_COPY_AND_ASSIGN(SlowPathCode); |
| 64 | }; |
| 65 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 66 | class CodeGenerator : public ArenaObject<kArenaAllocMisc> { |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 67 | public: |
| 68 | // Compiles the graph to executable instructions. Returns whether the compilation |
| 69 | // succeeded. |
Nicolas Geoffray | 73e80c3 | 2014-07-22 17:47:56 +0100 | [diff] [blame] | 70 | void CompileBaseline(CodeAllocator* allocator, bool is_leaf = false); |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 71 | void CompileOptimized(CodeAllocator* allocator); |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 72 | static CodeGenerator* Create(ArenaAllocator* allocator, |
| 73 | HGraph* graph, |
| 74 | InstructionSet instruction_set); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 75 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 76 | HGraph* GetGraph() const { return graph_; } |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 77 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 78 | bool GoesToNextBlock(HBasicBlock* current, HBasicBlock* next) const; |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 79 | |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 80 | size_t GetStackSlotOfParameter(HParameterValue* parameter) const { |
| 81 | // Note that this follows the current calling convention. |
| 82 | return GetFrameSize() |
| 83 | + kVRegSize // Art method |
Nicolas Geoffray | e27f31a | 2014-06-12 17:53:14 +0100 | [diff] [blame] | 84 | + parameter->GetIndex() * kVRegSize; |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 85 | } |
| 86 | |
Nicolas Geoffray | 92a73ae | 2014-10-16 11:12:52 +0100 | [diff] [blame] | 87 | virtual void Initialize() = 0; |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 88 | virtual void GenerateFrameEntry() = 0; |
| 89 | virtual void GenerateFrameExit() = 0; |
Nicolas Geoffray | 92a73ae | 2014-10-16 11:12:52 +0100 | [diff] [blame] | 90 | virtual void Bind(HBasicBlock* block) = 0; |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 91 | virtual void Move(HInstruction* instruction, Location location, HInstruction* move_for) = 0; |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 92 | virtual HGraphVisitor* GetLocationBuilder() = 0; |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 93 | virtual HGraphVisitor* GetInstructionVisitor() = 0; |
| 94 | virtual Assembler* GetAssembler() = 0; |
Nicolas Geoffray | 707c809 | 2014-04-04 10:50:14 +0100 | [diff] [blame] | 95 | virtual size_t GetWordSize() const = 0; |
Nicolas Geoffray | de58ab2 | 2014-11-05 12:46:03 +0000 | [diff] [blame] | 96 | virtual uintptr_t GetAddressOf(HBasicBlock* block) const = 0; |
Nicolas Geoffray | 3bca0df | 2014-09-19 11:01:00 +0100 | [diff] [blame] | 97 | void ComputeFrameSize(size_t number_of_spill_slots, |
| 98 | size_t maximum_number_of_live_registers, |
| 99 | size_t number_of_out_slots); |
Nicolas Geoffray | ab032bc | 2014-07-15 12:55:21 +0100 | [diff] [blame] | 100 | virtual size_t FrameEntrySpillSize() const = 0; |
| 101 | int32_t GetStackSlot(HLocal* local) const; |
| 102 | Location GetTemporaryLocation(HTemporary* temp) const; |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 103 | |
| 104 | uint32_t GetFrameSize() const { return frame_size_; } |
| 105 | void SetFrameSize(uint32_t size) { frame_size_ = size; } |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 106 | uint32_t GetCoreSpillMask() const { return core_spill_mask_; } |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 107 | |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 108 | size_t GetNumberOfCoreRegisters() const { return number_of_core_registers_; } |
| 109 | size_t GetNumberOfFloatingPointRegisters() const { return number_of_fpu_registers_; } |
| 110 | virtual void SetupBlockedRegisters() const = 0; |
| 111 | |
Nicolas Geoffray | a7062e0 | 2014-05-22 12:50:17 +0100 | [diff] [blame] | 112 | virtual void DumpCoreRegister(std::ostream& stream, int reg) const = 0; |
| 113 | virtual void DumpFloatingPointRegister(std::ostream& stream, int reg) const = 0; |
Nicolas Geoffray | 412f10c | 2014-06-19 10:00:34 +0100 | [diff] [blame] | 114 | virtual InstructionSet GetInstructionSet() const = 0; |
Nicolas Geoffray | 102cbed | 2014-10-15 18:31:05 +0100 | [diff] [blame] | 115 | // Saves the register in the stack. Returns the size taken on stack. |
| 116 | virtual size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id) = 0; |
| 117 | // Restores the register from the stack. Returns the size taken on stack. |
| 118 | virtual size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id) = 0; |
| 119 | virtual size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id) { |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 120 | UNUSED(stack_index, reg_id); |
| 121 | UNIMPLEMENTED(FATAL); |
| 122 | UNREACHABLE(); |
Nicolas Geoffray | 102cbed | 2014-10-15 18:31:05 +0100 | [diff] [blame] | 123 | } |
| 124 | virtual size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id) { |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 125 | UNUSED(stack_index, reg_id); |
| 126 | UNIMPLEMENTED(FATAL); |
| 127 | UNREACHABLE(); |
Nicolas Geoffray | 102cbed | 2014-10-15 18:31:05 +0100 | [diff] [blame] | 128 | } |
Nicolas Geoffray | a7062e0 | 2014-05-22 12:50:17 +0100 | [diff] [blame] | 129 | |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 130 | void RecordPcInfo(HInstruction* instruction, uint32_t dex_pc); |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 131 | |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 132 | void AddSlowPath(SlowPathCode* slow_path) { |
| 133 | slow_paths_.Add(slow_path); |
| 134 | } |
| 135 | |
| 136 | void GenerateSlowPaths(); |
| 137 | |
Yevgeny Rouban | e3ea838 | 2014-08-08 16:29:38 +0700 | [diff] [blame] | 138 | void BuildMappingTable(std::vector<uint8_t>* vector, SrcMap* src_map) const; |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 139 | void BuildVMapTable(std::vector<uint8_t>* vector) const; |
Nicolas Geoffray | 92cf83e | 2014-03-18 17:59:20 +0000 | [diff] [blame] | 140 | void BuildNativeGCMap( |
| 141 | std::vector<uint8_t>* vector, const DexCompilationUnit& dex_compilation_unit) const; |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 142 | void BuildStackMaps(std::vector<uint8_t>* vector); |
Nicolas Geoffray | 3bca0df | 2014-09-19 11:01:00 +0100 | [diff] [blame] | 143 | void SaveLiveRegisters(LocationSummary* locations); |
| 144 | void RestoreLiveRegisters(LocationSummary* locations); |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 145 | |
Nicolas Geoffray | f12feb8 | 2014-07-17 18:32:41 +0100 | [diff] [blame] | 146 | bool IsLeafMethod() const { |
| 147 | return is_leaf_; |
| 148 | } |
| 149 | |
| 150 | void MarkNotLeaf() { |
| 151 | is_leaf_ = false; |
| 152 | } |
| 153 | |
Nicolas Geoffray | 3c04974 | 2014-09-24 18:10:46 +0100 | [diff] [blame] | 154 | // Clears the spill slots taken by loop phis in the `LocationSummary` of the |
| 155 | // suspend check. This is called when the code generator generates code |
| 156 | // for the suspend check at the back edge (instead of where the suspend check |
| 157 | // is, which is the loop entry). At this point, the spill slots for the phis |
| 158 | // have not been written to. |
| 159 | void ClearSpillSlotsFromLoopPhisInStackMap(HSuspendCheck* suspend_check) const; |
| 160 | |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 161 | bool* GetBlockedCoreRegisters() const { return blocked_core_registers_; } |
Nicolas Geoffray | 102cbed | 2014-10-15 18:31:05 +0100 | [diff] [blame] | 162 | bool* GetBlockedFloatingPointRegisters() const { return blocked_fpu_registers_; } |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 163 | |
Nicolas Geoffray | 19a19cf | 2014-10-22 16:07:05 +0100 | [diff] [blame] | 164 | // Helper that returns the pointer offset of an index in an object array. |
| 165 | // Note: this method assumes we always have the same pointer size, regardless |
| 166 | // of the architecture. |
| 167 | static size_t GetCacheOffset(uint32_t index); |
| 168 | |
Nicolas Geoffray | f0e3937 | 2014-11-12 17:50:07 +0000 | [diff] [blame^] | 169 | void EmitParallelMoves(Location from1, Location to1, Location from2, Location to2); |
| 170 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 171 | protected: |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 172 | CodeGenerator(HGraph* graph, |
| 173 | size_t number_of_core_registers, |
| 174 | size_t number_of_fpu_registers, |
| 175 | size_t number_of_register_pairs) |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 176 | : frame_size_(kUninitializedFrameSize), |
Nicolas Geoffray | 4361bef | 2014-08-20 04:59:12 +0100 | [diff] [blame] | 177 | core_spill_mask_(0), |
Nicolas Geoffray | 3bca0df | 2014-09-19 11:01:00 +0100 | [diff] [blame] | 178 | first_register_slot_in_slow_path_(0), |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 179 | blocked_core_registers_(graph->GetArena()->AllocArray<bool>(number_of_core_registers)), |
| 180 | blocked_fpu_registers_(graph->GetArena()->AllocArray<bool>(number_of_fpu_registers)), |
| 181 | blocked_register_pairs_(graph->GetArena()->AllocArray<bool>(number_of_register_pairs)), |
| 182 | number_of_core_registers_(number_of_core_registers), |
| 183 | number_of_fpu_registers_(number_of_fpu_registers), |
| 184 | number_of_register_pairs_(number_of_register_pairs), |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 185 | graph_(graph), |
Nicolas Geoffray | a7aca37 | 2014-04-28 17:47:12 +0100 | [diff] [blame] | 186 | pc_infos_(graph->GetArena(), 32), |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 187 | slow_paths_(graph->GetArena(), 8), |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 188 | is_leaf_(true), |
| 189 | stack_map_stream_(graph->GetArena()) {} |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 190 | ~CodeGenerator() {} |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 191 | |
Nicolas Geoffray | a7aca37 | 2014-04-28 17:47:12 +0100 | [diff] [blame] | 192 | // Register allocation logic. |
| 193 | void AllocateRegistersLocally(HInstruction* instruction) const; |
| 194 | |
| 195 | // Backend specific implementation for allocating a register. |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 196 | virtual Location AllocateFreeRegister(Primitive::Type type) const = 0; |
Nicolas Geoffray | a7aca37 | 2014-04-28 17:47:12 +0100 | [diff] [blame] | 197 | |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 198 | static size_t FindFreeEntry(bool* array, size_t length); |
Nicolas Geoffray | 3c03503 | 2014-10-28 10:46:40 +0000 | [diff] [blame] | 199 | static size_t FindTwoFreeConsecutiveAlignedEntries(bool* array, size_t length); |
Nicolas Geoffray | a7aca37 | 2014-04-28 17:47:12 +0100 | [diff] [blame] | 200 | |
Nicolas Geoffray | a7aca37 | 2014-04-28 17:47:12 +0100 | [diff] [blame] | 201 | virtual Location GetStackLocation(HLoadLocal* load) const = 0; |
| 202 | |
Nicolas Geoffray | f0e3937 | 2014-11-12 17:50:07 +0000 | [diff] [blame^] | 203 | virtual ParallelMoveResolver* GetMoveResolver() = 0; |
| 204 | |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 205 | // Frame size required for this method. |
| 206 | uint32_t frame_size_; |
| 207 | uint32_t core_spill_mask_; |
Nicolas Geoffray | 3bca0df | 2014-09-19 11:01:00 +0100 | [diff] [blame] | 208 | uint32_t first_register_slot_in_slow_path_; |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 209 | |
Nicolas Geoffray | 71175b7 | 2014-10-09 22:13:55 +0100 | [diff] [blame] | 210 | // Arrays used when doing register allocation to know which |
| 211 | // registers we can allocate. `SetupBlockedRegisters` updates the |
| 212 | // arrays. |
| 213 | bool* const blocked_core_registers_; |
| 214 | bool* const blocked_fpu_registers_; |
| 215 | bool* const blocked_register_pairs_; |
| 216 | size_t number_of_core_registers_; |
| 217 | size_t number_of_fpu_registers_; |
| 218 | size_t number_of_register_pairs_; |
| 219 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 220 | private: |
| 221 | void InitLocations(HInstruction* instruction); |
Nicolas Geoffray | 3bca0df | 2014-09-19 11:01:00 +0100 | [diff] [blame] | 222 | size_t GetStackOffsetOfSavedRegister(size_t index); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 223 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 224 | HGraph* const graph_; |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 225 | |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 226 | GrowableArray<PcInfo> pc_infos_; |
Nicolas Geoffray | e503832 | 2014-07-04 09:41:32 +0100 | [diff] [blame] | 227 | GrowableArray<SlowPathCode*> slow_paths_; |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 228 | |
Nicolas Geoffray | f12feb8 | 2014-07-17 18:32:41 +0100 | [diff] [blame] | 229 | bool is_leaf_; |
| 230 | |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 231 | StackMapStream stack_map_stream_; |
| 232 | |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 233 | DISALLOW_COPY_AND_ASSIGN(CodeGenerator); |
| 234 | }; |
| 235 | |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 236 | template <typename C, typename F> |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 237 | class CallingConvention { |
| 238 | public: |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 239 | CallingConvention(const C* registers, |
| 240 | size_t number_of_registers, |
| 241 | const F* fpu_registers, |
| 242 | size_t number_of_fpu_registers) |
| 243 | : registers_(registers), |
| 244 | number_of_registers_(number_of_registers), |
| 245 | fpu_registers_(fpu_registers), |
| 246 | number_of_fpu_registers_(number_of_fpu_registers) {} |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 247 | |
| 248 | size_t GetNumberOfRegisters() const { return number_of_registers_; } |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 249 | size_t GetNumberOfFpuRegisters() const { return number_of_fpu_registers_; } |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 250 | |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 251 | C GetRegisterAt(size_t index) const { |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 252 | DCHECK_LT(index, number_of_registers_); |
| 253 | return registers_[index]; |
| 254 | } |
| 255 | |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 256 | F GetFpuRegisterAt(size_t index) const { |
| 257 | DCHECK_LT(index, number_of_fpu_registers_); |
| 258 | return fpu_registers_[index]; |
| 259 | } |
| 260 | |
| 261 | size_t GetStackOffsetOf(size_t index) const { |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 262 | // We still reserve the space for parameters passed by registers. |
Nicolas Geoffray | 9cf3552 | 2014-06-09 18:40:10 +0100 | [diff] [blame] | 263 | // Add one for the method pointer. |
| 264 | return (index + 1) * kVRegSize; |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | private: |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 268 | const C* registers_; |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 269 | const size_t number_of_registers_; |
Nicolas Geoffray | 7fb49da | 2014-10-06 09:12:41 +0100 | [diff] [blame] | 270 | const F* fpu_registers_; |
| 271 | const size_t number_of_fpu_registers_; |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 272 | |
| 273 | DISALLOW_COPY_AND_ASSIGN(CallingConvention); |
| 274 | }; |
| 275 | |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 276 | } // namespace art |
| 277 | |
| 278 | #endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_H_ |