code_generator_x86_64.h revision 9cf35523764d829ae0470dae2d5dd99be469c841 
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 "utils/x86_64/assembler_x86_64.h"
23
24namespace art {
25namespace x86_64 {
26
27static constexpr size_t kX86_64WordSize = 8;
28
29static constexpr Register kParameterCoreRegisters[] = { RSI, RDX, RCX, R8, R9 };
30
31static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
32
33class InvokeDexCallingConvention : public CallingConvention<Register> {
34 public:
35  InvokeDexCallingConvention()
36      : CallingConvention(kParameterCoreRegisters, kParameterCoreRegistersLength) {}
37
38 private:
39  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
40};
41
42class InvokeDexCallingConventionVisitor {
43 public:
44  InvokeDexCallingConventionVisitor() : gp_index_(0), stack_index_(0) {}
45
46  Location GetNextLocation(Primitive::Type type);
47
48 private:
49  InvokeDexCallingConvention calling_convention;
50  uint32_t gp_index_;
51  uint32_t stack_index_;
52
53  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitor);
54};
55
56class CodeGeneratorX86_64;
57
58class LocationsBuilderX86_64 : public HGraphVisitor {
59 public:
60  LocationsBuilderX86_64(HGraph* graph, CodeGeneratorX86_64* codegen)
61      : HGraphVisitor(graph), codegen_(codegen) {}
62
63#define DECLARE_VISIT_INSTRUCTION(name)     \
64  virtual void Visit##name(H##name* instr);
65
66  FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
67
68#undef DECLARE_VISIT_INSTRUCTION
69
70 private:
71  CodeGeneratorX86_64* const codegen_;
72  InvokeDexCallingConventionVisitor parameter_visitor_;
73
74  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
75};
76
77class InstructionCodeGeneratorX86_64 : public HGraphVisitor {
78 public:
79  InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen);
80
81#define DECLARE_VISIT_INSTRUCTION(name)     \
82  virtual void Visit##name(H##name* instr);
83
84  FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
85
86#undef DECLARE_VISIT_INSTRUCTION
87
88  void LoadCurrentMethod(CpuRegister reg);
89
90  X86_64Assembler* GetAssembler() const { return assembler_; }
91
92 private:
93  X86_64Assembler* const assembler_;
94  CodeGeneratorX86_64* const codegen_;
95
96  DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64);
97};
98
99class CodeGeneratorX86_64 : public CodeGenerator {
100 public:
101  explicit CodeGeneratorX86_64(HGraph* graph);
102  virtual ~CodeGeneratorX86_64() {}
103
104  virtual void ComputeFrameSize(size_t number_of_spill_slots) OVERRIDE;
105  virtual void GenerateFrameEntry() OVERRIDE;
106  virtual void GenerateFrameExit() OVERRIDE;
107  virtual void Bind(Label* label) OVERRIDE;
108  virtual void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;
109
110  virtual size_t GetWordSize() const OVERRIDE {
111    return kX86_64WordSize;
112  }
113
114  virtual HGraphVisitor* GetLocationBuilder() OVERRIDE {
115    return &location_builder_;
116  }
117
118  virtual HGraphVisitor* GetInstructionVisitor() OVERRIDE {
119    return &instruction_visitor_;
120  }
121
122  virtual X86_64Assembler* GetAssembler() OVERRIDE {
123    return &assembler_;
124  }
125
126  int32_t GetStackSlot(HLocal* local) const;
127  virtual Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
128
129  virtual size_t GetNumberOfRegisters() const OVERRIDE {
130    return kNumberOfRegIds;
131  }
132
133  virtual size_t GetNumberOfCoreRegisters() const OVERRIDE {
134    return kNumberOfCpuRegisters;
135  }
136
137  virtual size_t GetNumberOfFloatingPointRegisters() const OVERRIDE {
138    return kNumberOfFloatRegisters;
139  }
140
141  virtual void SetupBlockedRegisters(bool* blocked_registers) const OVERRIDE;
142  virtual ManagedRegister AllocateFreeRegister(
143      Primitive::Type type, bool* blocked_registers) const OVERRIDE;
144  virtual void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
145  virtual void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;
146
147 private:
148  // Helper method to move a value between two locations.
149  void Move(Location destination, Location source);
150
151  LocationsBuilderX86_64 location_builder_;
152  InstructionCodeGeneratorX86_64 instruction_visitor_;
153  X86_64Assembler assembler_;
154
155  DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64);
156};
157
158}  // namespace x86_64
159}  // namespace art
160
161#endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
162