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_X86_64_H_ 18 #define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_ 19 20 #include "code_generator.h" 21 #include "nodes.h" 22 #include "parallel_move_resolver.h" 23 #include "utils/x86_64/assembler_x86_64.h" 24 25 namespace art { 26 namespace x86_64 { 27 28 static constexpr size_t kX86_64WordSize = 8; 29 30 static constexpr Register kParameterCoreRegisters[] = { RSI, RDX, RCX, R8, R9 }; 31 32 static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters); 33 34 class InvokeDexCallingConvention : public CallingConvention<Register> { 35 public: 36 InvokeDexCallingConvention() 37 : CallingConvention(kParameterCoreRegisters, kParameterCoreRegistersLength) {} 38 39 private: 40 DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention); 41 }; 42 43 class InvokeDexCallingConventionVisitor { 44 public: 45 InvokeDexCallingConventionVisitor() : gp_index_(0), stack_index_(0) {} 46 47 Location GetNextLocation(Primitive::Type type); 48 49 private: 50 InvokeDexCallingConvention calling_convention; 51 uint32_t gp_index_; 52 uint32_t stack_index_; 53 54 DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitor); 55 }; 56 57 class CodeGeneratorX86_64; 58 59 class ParallelMoveResolverX86_64 : public ParallelMoveResolver { 60 public: 61 ParallelMoveResolverX86_64(ArenaAllocator* allocator, CodeGeneratorX86_64* codegen) 62 : ParallelMoveResolver(allocator), codegen_(codegen) {} 63 64 virtual void EmitMove(size_t index) OVERRIDE; 65 virtual void EmitSwap(size_t index) OVERRIDE; 66 virtual void SpillScratch(int reg) OVERRIDE; 67 virtual void RestoreScratch(int reg) OVERRIDE; 68 69 X86_64Assembler* GetAssembler() const; 70 71 private: 72 void Exchange32(CpuRegister reg, int mem); 73 void Exchange32(int mem1, int mem2); 74 void Exchange64(CpuRegister reg, int mem); 75 void Exchange64(int mem1, int mem2); 76 77 CodeGeneratorX86_64* const codegen_; 78 79 DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverX86_64); 80 }; 81 82 class LocationsBuilderX86_64 : public HGraphVisitor { 83 public: 84 LocationsBuilderX86_64(HGraph* graph, CodeGeneratorX86_64* codegen) 85 : HGraphVisitor(graph), codegen_(codegen) {} 86 87 #define DECLARE_VISIT_INSTRUCTION(name) \ 88 virtual void Visit##name(H##name* instr); 89 90 FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION) 91 92 #undef DECLARE_VISIT_INSTRUCTION 93 94 private: 95 CodeGeneratorX86_64* const codegen_; 96 InvokeDexCallingConventionVisitor parameter_visitor_; 97 98 DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64); 99 }; 100 101 class InstructionCodeGeneratorX86_64 : public HGraphVisitor { 102 public: 103 InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen); 104 105 #define DECLARE_VISIT_INSTRUCTION(name) \ 106 virtual void Visit##name(H##name* instr); 107 108 FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION) 109 110 #undef DECLARE_VISIT_INSTRUCTION 111 112 void LoadCurrentMethod(CpuRegister reg); 113 114 X86_64Assembler* GetAssembler() const { return assembler_; } 115 116 private: 117 X86_64Assembler* const assembler_; 118 CodeGeneratorX86_64* const codegen_; 119 120 DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64); 121 }; 122 123 class CodeGeneratorX86_64 : public CodeGenerator { 124 public: 125 explicit CodeGeneratorX86_64(HGraph* graph); 126 virtual ~CodeGeneratorX86_64() {} 127 128 virtual void GenerateFrameEntry() OVERRIDE; 129 virtual void GenerateFrameExit() OVERRIDE; 130 virtual void Bind(Label* label) OVERRIDE; 131 virtual void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE; 132 133 virtual size_t GetWordSize() const OVERRIDE { 134 return kX86_64WordSize; 135 } 136 137 virtual size_t FrameEntrySpillSize() const OVERRIDE; 138 139 virtual HGraphVisitor* GetLocationBuilder() OVERRIDE { 140 return &location_builder_; 141 } 142 143 virtual HGraphVisitor* GetInstructionVisitor() OVERRIDE { 144 return &instruction_visitor_; 145 } 146 147 virtual X86_64Assembler* GetAssembler() OVERRIDE { 148 return &assembler_; 149 } 150 151 ParallelMoveResolverX86_64* GetMoveResolver() { 152 return &move_resolver_; 153 } 154 155 virtual Location GetStackLocation(HLoadLocal* load) const OVERRIDE; 156 157 virtual size_t GetNumberOfRegisters() const OVERRIDE { 158 return kNumberOfRegIds; 159 } 160 161 virtual size_t GetNumberOfCoreRegisters() const OVERRIDE { 162 return kNumberOfCpuRegisters; 163 } 164 165 virtual size_t GetNumberOfFloatingPointRegisters() const OVERRIDE { 166 return kNumberOfFloatRegisters; 167 } 168 169 virtual void SetupBlockedRegisters(bool* blocked_registers) const OVERRIDE; 170 virtual ManagedRegister AllocateFreeRegister( 171 Primitive::Type type, bool* blocked_registers) const OVERRIDE; 172 virtual void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE; 173 virtual void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE; 174 175 virtual InstructionSet GetInstructionSet() const OVERRIDE { 176 return InstructionSet::kX86_64; 177 } 178 179 // Emit a write barrier. 180 void MarkGCCard(CpuRegister temp, CpuRegister card, CpuRegister object, CpuRegister value); 181 182 // Helper method to move a value between two locations. 183 void Move(Location destination, Location source); 184 185 private: 186 LocationsBuilderX86_64 location_builder_; 187 InstructionCodeGeneratorX86_64 instruction_visitor_; 188 ParallelMoveResolverX86_64 move_resolver_; 189 X86_64Assembler assembler_; 190 191 DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64); 192 }; 193 194 } // namespace x86_64 195 } // namespace art 196 197 #endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_ 198
