code_generator_x86_64.h revision e982f0b8e809cece6f460fa2d8df25873aa69de4 
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
25namespace art {
26namespace x86_64 {
27
28static constexpr size_t kX86_64WordSize = 8;
29
30static constexpr Register kParameterCoreRegisters[] = { RSI, RDX, RCX, R8, R9 };
31
32static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
33
34class InvokeDexCallingConvention : public CallingConvention<Register> {
35 public:
36  InvokeDexCallingConvention()
37      : CallingConvention(kParameterCoreRegisters, kParameterCoreRegistersLength) {}
38
39 private:
40  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
41};
42
43class 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
57class CodeGeneratorX86_64;
58
59class 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
82class 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  void HandleInvoke(HInvoke* invoke);
95
96 private:
97  CodeGeneratorX86_64* const codegen_;
98  InvokeDexCallingConventionVisitor parameter_visitor_;
99
100  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
101};
102
103class InstructionCodeGeneratorX86_64 : public HGraphVisitor {
104 public:
105  InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen);
106
107#define DECLARE_VISIT_INSTRUCTION(name)     \
108  virtual void Visit##name(H##name* instr);
109
110  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
111
112#undef DECLARE_VISIT_INSTRUCTION
113
114  void LoadCurrentMethod(CpuRegister reg);
115
116  X86_64Assembler* GetAssembler() const { return assembler_; }
117
118 private:
119  X86_64Assembler* const assembler_;
120  CodeGeneratorX86_64* const codegen_;
121
122  DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64);
123};
124
125class CodeGeneratorX86_64 : public CodeGenerator {
126 public:
127  explicit CodeGeneratorX86_64(HGraph* graph);
128  virtual ~CodeGeneratorX86_64() {}
129
130  virtual void GenerateFrameEntry() OVERRIDE;
131  virtual void GenerateFrameExit() OVERRIDE;
132  virtual void Bind(Label* label) OVERRIDE;
133  virtual void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;
134
135  virtual size_t GetWordSize() const OVERRIDE {
136    return kX86_64WordSize;
137  }
138
139  virtual size_t FrameEntrySpillSize() const OVERRIDE;
140
141  virtual HGraphVisitor* GetLocationBuilder() OVERRIDE {
142    return &location_builder_;
143  }
144
145  virtual HGraphVisitor* GetInstructionVisitor() OVERRIDE {
146    return &instruction_visitor_;
147  }
148
149  virtual X86_64Assembler* GetAssembler() OVERRIDE {
150    return &assembler_;
151  }
152
153  ParallelMoveResolverX86_64* GetMoveResolver() {
154    return &move_resolver_;
155  }
156
157  virtual Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
158
159  virtual size_t GetNumberOfRegisters() const OVERRIDE {
160    return kNumberOfRegIds;
161  }
162
163  virtual size_t GetNumberOfCoreRegisters() const OVERRIDE {
164    return kNumberOfCpuRegisters;
165  }
166
167  virtual size_t GetNumberOfFloatingPointRegisters() const OVERRIDE {
168    return kNumberOfFloatRegisters;
169  }
170
171  virtual void SetupBlockedRegisters(bool* blocked_registers) const OVERRIDE;
172  virtual ManagedRegister AllocateFreeRegister(
173      Primitive::Type type, bool* blocked_registers) const OVERRIDE;
174  virtual void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
175  virtual void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;
176
177  virtual InstructionSet GetInstructionSet() const OVERRIDE {
178    return InstructionSet::kX86_64;
179  }
180
181  // Emit a write barrier.
182  void MarkGCCard(CpuRegister temp, CpuRegister card, CpuRegister object, CpuRegister value);
183
184  // Helper method to move a value between two locations.
185  void Move(Location destination, Location source);
186
187 private:
188  LocationsBuilderX86_64 location_builder_;
189  InstructionCodeGeneratorX86_64 instruction_visitor_;
190  ParallelMoveResolverX86_64 move_resolver_;
191  X86_64Assembler assembler_;
192
193  DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64);
194};
195
196}  // namespace x86_64
197}  // namespace art
198
199#endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
200