code_generator_x86_64.h revision 840e5461a85f8908f51e7f6cd562a9129ff0e7ce 
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 "dex/compiler_enums.h"
22#include "nodes.h"
23#include "parallel_move_resolver.h"
24#include "utils/x86_64/assembler_x86_64.h"
25
26namespace art {
27namespace x86_64 {
28
29// Use a local definition to prevent copying mistakes.
30static constexpr size_t kX86_64WordSize = kX86_64PointerSize;
31
32static constexpr Register kParameterCoreRegisters[] = { RSI, RDX, RCX, R8, R9 };
33static constexpr FloatRegister kParameterFloatRegisters[] =
34    { XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7 };
35
36static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
37static constexpr size_t kParameterFloatRegistersLength = arraysize(kParameterFloatRegisters);
38
39class InvokeDexCallingConvention : public CallingConvention<Register, FloatRegister> {
40 public:
41  InvokeDexCallingConvention() : CallingConvention(
42      kParameterCoreRegisters,
43      kParameterCoreRegistersLength,
44      kParameterFloatRegisters,
45      kParameterFloatRegistersLength) {}
46
47 private:
48  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
49};
50
51class InvokeDexCallingConventionVisitor {
52 public:
53  InvokeDexCallingConventionVisitor() : gp_index_(0), fp_index_(0), stack_index_(0) {}
54
55  Location GetNextLocation(Primitive::Type type);
56
57 private:
58  InvokeDexCallingConvention calling_convention;
59  // The current index for cpu registers.
60  uint32_t gp_index_;
61  // The current index for fpu registers.
62  uint32_t fp_index_;
63  // The current stack index.
64  uint32_t stack_index_;
65
66  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitor);
67};
68
69class CodeGeneratorX86_64;
70class SlowPathCodeX86_64;
71
72class ParallelMoveResolverX86_64 : public ParallelMoveResolver {
73 public:
74  ParallelMoveResolverX86_64(ArenaAllocator* allocator, CodeGeneratorX86_64* codegen)
75      : ParallelMoveResolver(allocator), codegen_(codegen) {}
76
77  void EmitMove(size_t index) OVERRIDE;
78  void EmitSwap(size_t index) OVERRIDE;
79  void SpillScratch(int reg) OVERRIDE;
80  void RestoreScratch(int reg) OVERRIDE;
81
82  X86_64Assembler* GetAssembler() const;
83
84 private:
85  void Exchange32(CpuRegister reg, int mem);
86  void Exchange32(XmmRegister reg, int mem);
87  void Exchange32(int mem1, int mem2);
88  void Exchange64(CpuRegister reg, int mem);
89  void Exchange64(XmmRegister reg, int mem);
90  void Exchange64(int mem1, int mem2);
91
92  CodeGeneratorX86_64* const codegen_;
93
94  DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverX86_64);
95};
96
97class LocationsBuilderX86_64 : public HGraphVisitor {
98 public:
99  LocationsBuilderX86_64(HGraph* graph, CodeGeneratorX86_64* codegen)
100      : HGraphVisitor(graph), codegen_(codegen) {}
101
102#define DECLARE_VISIT_INSTRUCTION(name, super)     \
103  void Visit##name(H##name* instr) OVERRIDE;
104
105  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
106
107#undef DECLARE_VISIT_INSTRUCTION
108
109 private:
110  void HandleInvoke(HInvoke* invoke);
111  void HandleBitwiseOperation(HBinaryOperation* operation);
112  void HandleShift(HBinaryOperation* operation);
113  void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
114  void HandleFieldGet(HInstruction* instruction);
115
116  CodeGeneratorX86_64* const codegen_;
117  InvokeDexCallingConventionVisitor parameter_visitor_;
118
119  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
120};
121
122class InstructionCodeGeneratorX86_64 : public HGraphVisitor {
123 public:
124  InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen);
125
126#define DECLARE_VISIT_INSTRUCTION(name, super)     \
127  void Visit##name(H##name* instr) OVERRIDE;
128
129  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
130
131#undef DECLARE_VISIT_INSTRUCTION
132
133  X86_64Assembler* GetAssembler() const { return assembler_; }
134
135 private:
136  // Generate code for the given suspend check. If not null, `successor`
137  // is the block to branch to if the suspend check is not needed, and after
138  // the suspend call.
139  void GenerateSuspendCheck(HSuspendCheck* instruction, HBasicBlock* successor);
140  void GenerateClassInitializationCheck(SlowPathCodeX86_64* slow_path, CpuRegister class_reg);
141  void HandleBitwiseOperation(HBinaryOperation* operation);
142  void GenerateDivRemIntegral(HBinaryOperation* instruction);
143  void HandleShift(HBinaryOperation* operation);
144  void GenerateMemoryBarrier(MemBarrierKind kind);
145  void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
146  void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
147
148  X86_64Assembler* const assembler_;
149  CodeGeneratorX86_64* const codegen_;
150
151  DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64);
152};
153
154class CodeGeneratorX86_64 : public CodeGenerator {
155 public:
156  explicit CodeGeneratorX86_64(HGraph* graph);
157  virtual ~CodeGeneratorX86_64() {}
158
159  void GenerateFrameEntry() OVERRIDE;
160  void GenerateFrameExit() OVERRIDE;
161  void Bind(HBasicBlock* block) OVERRIDE;
162  void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;
163  size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
164  size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
165  size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
166  size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
167
168  size_t GetWordSize() const OVERRIDE {
169    return kX86_64WordSize;
170  }
171
172  size_t FrameEntrySpillSize() const OVERRIDE;
173
174  HGraphVisitor* GetLocationBuilder() OVERRIDE {
175    return &location_builder_;
176  }
177
178  HGraphVisitor* GetInstructionVisitor() OVERRIDE {
179    return &instruction_visitor_;
180  }
181
182  X86_64Assembler* GetAssembler() OVERRIDE {
183    return &assembler_;
184  }
185
186  ParallelMoveResolverX86_64* GetMoveResolver() OVERRIDE {
187    return &move_resolver_;
188  }
189
190  uintptr_t GetAddressOf(HBasicBlock* block) const OVERRIDE {
191    return GetLabelOf(block)->Position();
192  }
193
194  Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
195
196  void SetupBlockedRegisters() const OVERRIDE;
197  Location AllocateFreeRegister(Primitive::Type type) const OVERRIDE;
198  void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
199  void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;
200
201  InstructionSet GetInstructionSet() const OVERRIDE {
202    return InstructionSet::kX86_64;
203  }
204
205  // Emit a write barrier.
206  void MarkGCCard(CpuRegister temp, CpuRegister card, CpuRegister object, CpuRegister value);
207
208  // Helper method to move a value between two locations.
209  void Move(Location destination, Location source);
210
211  void LoadCurrentMethod(CpuRegister reg);
212
213  Label* GetLabelOf(HBasicBlock* block) const {
214    return block_labels_.GetRawStorage() + block->GetBlockId();
215  }
216
217  void Initialize() OVERRIDE {
218    block_labels_.SetSize(GetGraph()->GetBlocks().Size());
219  }
220
221  bool NeedsTwoRegisters(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE {
222    return false;
223  }
224
225 private:
226  // Labels for each block that will be compiled.
227  GrowableArray<Label> block_labels_;
228  LocationsBuilderX86_64 location_builder_;
229  InstructionCodeGeneratorX86_64 instruction_visitor_;
230  ParallelMoveResolverX86_64 move_resolver_;
231  X86_64Assembler assembler_;
232
233  DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64);
234};
235
236}  // namespace x86_64
237}  // namespace art
238
239#endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
240