code_generator_x86_64.h revision 3c7bb98698f77af10372cf31824d3bb115d9bf0f 
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 private:
95  CodeGeneratorX86_64* const codegen_;
96  InvokeDexCallingConventionVisitor parameter_visitor_;
97
98  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
99};
100
101class 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
123class 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