code_generator_x86.cc revision a7062e05e6048c7f817d784a5b94e3122e25b1ec 
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#include "code_generator_x86.h"
18#include "utils/assembler.h"
19#include "utils/x86/assembler_x86.h"
20#include "utils/x86/managed_register_x86.h"
21
22#include "entrypoints/quick/quick_entrypoints.h"
23#include "mirror/array.h"
24#include "mirror/art_method.h"
25#include "thread.h"
26
27#define __ reinterpret_cast<X86Assembler*>(GetAssembler())->
28
29namespace art {
30
31x86::X86ManagedRegister Location::AsX86() const {
32  return reg().AsX86();
33}
34
35namespace x86 {
36
37static constexpr int kNumberOfPushedRegistersAtEntry = 1;
38static constexpr int kCurrentMethodStackOffset = 0;
39
40void CodeGeneratorX86::DumpCoreRegister(std::ostream& stream, int reg) const {
41  stream << X86ManagedRegister::FromCpuRegister(Register(reg));
42}
43
44void CodeGeneratorX86::DumpFloatingPointRegister(std::ostream& stream, int reg) const {
45  stream << X86ManagedRegister::FromXmmRegister(XmmRegister(reg));
46}
47
48CodeGeneratorX86::CodeGeneratorX86(HGraph* graph)
49    : CodeGenerator(graph, kNumberOfRegIds),
50      location_builder_(graph, this),
51      instruction_visitor_(graph, this) {}
52
53static bool* GetBlockedRegisterPairs(bool* blocked_registers) {
54  return blocked_registers + kNumberOfAllocIds;
55}
56
57ManagedRegister CodeGeneratorX86::AllocateFreeRegister(Primitive::Type type,
58                                                       bool* blocked_registers) const {
59  switch (type) {
60    case Primitive::kPrimLong: {
61      size_t reg = AllocateFreeRegisterInternal(
62          GetBlockedRegisterPairs(blocked_registers), kNumberOfRegisterPairs);
63      X86ManagedRegister pair =
64          X86ManagedRegister::FromRegisterPair(static_cast<RegisterPair>(reg));
65      blocked_registers[pair.AsRegisterPairLow()] = true;
66      blocked_registers[pair.AsRegisterPairHigh()] = true;
67      return pair;
68    }
69
70    case Primitive::kPrimByte:
71    case Primitive::kPrimBoolean:
72    case Primitive::kPrimChar:
73    case Primitive::kPrimShort:
74    case Primitive::kPrimInt:
75    case Primitive::kPrimNot: {
76      size_t reg = AllocateFreeRegisterInternal(blocked_registers, kNumberOfCpuRegisters);
77      return X86ManagedRegister::FromCpuRegister(static_cast<Register>(reg));
78    }
79
80    case Primitive::kPrimFloat:
81    case Primitive::kPrimDouble:
82      LOG(FATAL) << "Unimplemented register type " << type;
83
84    case Primitive::kPrimVoid:
85      LOG(FATAL) << "Unreachable type " << type;
86  }
87
88  return ManagedRegister::NoRegister();
89}
90
91void CodeGeneratorX86::SetupBlockedRegisters(bool* blocked_registers) const {
92  bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers);
93
94  // Don't allocate the dalvik style register pair passing.
95  blocked_register_pairs[ECX_EDX] = true;
96
97  // Stack register is always reserved.
98  blocked_registers[ESP] = true;
99
100  // TODO: We currently don't use Quick's callee saved registers.
101  blocked_registers[EBP] = true;
102  blocked_registers[ESI] = true;
103  blocked_registers[EDI] = true;
104  blocked_register_pairs[EAX_EDI] = true;
105  blocked_register_pairs[EDX_EDI] = true;
106  blocked_register_pairs[ECX_EDI] = true;
107  blocked_register_pairs[EBX_EDI] = true;
108}
109
110size_t CodeGeneratorX86::GetNumberOfRegisters() const {
111  return kNumberOfRegIds;
112}
113
114static Location X86CpuLocation(Register reg) {
115  return Location::RegisterLocation(X86ManagedRegister::FromCpuRegister(reg));
116}
117
118InstructionCodeGeneratorX86::InstructionCodeGeneratorX86(HGraph* graph, CodeGeneratorX86* codegen)
119      : HGraphVisitor(graph),
120        assembler_(codegen->GetAssembler()),
121        codegen_(codegen) {}
122
123void CodeGeneratorX86::GenerateFrameEntry() {
124  // Create a fake register to mimic Quick.
125  static const int kFakeReturnRegister = 8;
126  core_spill_mask_ |= (1 << kFakeReturnRegister);
127
128  SetFrameSize(RoundUp(
129      (GetGraph()->GetMaximumNumberOfOutVRegs() + GetGraph()->GetNumberOfVRegs()) * kVRegSize
130      + kVRegSize  // filler
131      + kX86WordSize  // Art method
132      + kNumberOfPushedRegistersAtEntry * kX86WordSize,
133      kStackAlignment));
134
135  // The return PC has already been pushed on the stack.
136  __ subl(ESP, Immediate(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize));
137  __ movl(Address(ESP, kCurrentMethodStackOffset), EAX);
138}
139
140void CodeGeneratorX86::GenerateFrameExit() {
141  __ addl(ESP, Immediate(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize));
142}
143
144void CodeGeneratorX86::Bind(Label* label) {
145  __ Bind(label);
146}
147
148void InstructionCodeGeneratorX86::LoadCurrentMethod(Register reg) {
149  __ movl(reg, Address(ESP, kCurrentMethodStackOffset));
150}
151
152int32_t CodeGeneratorX86::GetStackSlot(HLocal* local) const {
153  uint16_t reg_number = local->GetRegNumber();
154  uint16_t number_of_vregs = GetGraph()->GetNumberOfVRegs();
155  uint16_t number_of_in_vregs = GetGraph()->GetNumberOfInVRegs();
156  if (reg_number >= number_of_vregs - number_of_in_vregs) {
157    // Local is a parameter of the method. It is stored in the caller's frame.
158    return GetFrameSize() + kX86WordSize  // ART method
159                          + (reg_number - number_of_vregs + number_of_in_vregs) * kVRegSize;
160  } else {
161    // Local is a temporary in this method. It is stored in this method's frame.
162    return GetFrameSize() - (kNumberOfPushedRegistersAtEntry * kX86WordSize)
163                          - kVRegSize  // filler.
164                          - (number_of_vregs * kVRegSize)
165                          + (reg_number * kVRegSize);
166  }
167}
168
169
170Location CodeGeneratorX86::GetStackLocation(HLoadLocal* load) const {
171  switch (load->GetType()) {
172    case Primitive::kPrimLong:
173      return Location::DoubleStackSlot(GetStackSlot(load->GetLocal()));
174      break;
175
176    case Primitive::kPrimInt:
177    case Primitive::kPrimNot:
178      return Location::StackSlot(GetStackSlot(load->GetLocal()));
179
180    case Primitive::kPrimFloat:
181    case Primitive::kPrimDouble:
182      LOG(FATAL) << "Unimplemented type " << load->GetType();
183
184    case Primitive::kPrimBoolean:
185    case Primitive::kPrimByte:
186    case Primitive::kPrimChar:
187    case Primitive::kPrimShort:
188    case Primitive::kPrimVoid:
189      LOG(FATAL) << "Unexpected type " << load->GetType();
190  }
191
192  LOG(FATAL) << "Unreachable";
193  return Location();
194}
195
196static constexpr Register kRuntimeParameterCoreRegisters[] = { EAX, ECX, EDX };
197static constexpr size_t kRuntimeParameterCoreRegistersLength =
198    arraysize(kRuntimeParameterCoreRegisters);
199
200class InvokeRuntimeCallingConvention : public CallingConvention<Register> {
201 public:
202  InvokeRuntimeCallingConvention()
203      : CallingConvention(kRuntimeParameterCoreRegisters,
204                          kRuntimeParameterCoreRegistersLength) {}
205
206 private:
207  DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention);
208};
209
210Location InvokeDexCallingConventionVisitor::GetNextLocation(Primitive::Type type) {
211  switch (type) {
212    case Primitive::kPrimBoolean:
213    case Primitive::kPrimByte:
214    case Primitive::kPrimChar:
215    case Primitive::kPrimShort:
216    case Primitive::kPrimInt:
217    case Primitive::kPrimNot: {
218      uint32_t index = gp_index_++;
219      if (index < calling_convention.GetNumberOfRegisters()) {
220        return X86CpuLocation(calling_convention.GetRegisterAt(index));
221      } else {
222        return Location::StackSlot(calling_convention.GetStackOffsetOf(index, kX86WordSize));
223      }
224    }
225
226    case Primitive::kPrimLong: {
227      uint32_t index = gp_index_;
228      gp_index_ += 2;
229      if (index + 1 < calling_convention.GetNumberOfRegisters()) {
230        return Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(
231            calling_convention.GetRegisterPairAt(index)));
232      } else if (index + 1 == calling_convention.GetNumberOfRegisters()) {
233        return Location::QuickParameter(index);
234      } else {
235        return Location::DoubleStackSlot(calling_convention.GetStackOffsetOf(index, kX86WordSize));
236      }
237    }
238
239    case Primitive::kPrimDouble:
240    case Primitive::kPrimFloat:
241      LOG(FATAL) << "Unimplemented parameter type " << type;
242      break;
243
244    case Primitive::kPrimVoid:
245      LOG(FATAL) << "Unexpected parameter type " << type;
246      break;
247  }
248  return Location();
249}
250
251void CodeGeneratorX86::Move32(Location destination, Location source) {
252  if (source.Equals(destination)) {
253    return;
254  }
255  if (destination.IsRegister()) {
256    if (source.IsRegister()) {
257      __ movl(destination.AsX86().AsCpuRegister(), source.AsX86().AsCpuRegister());
258    } else {
259      DCHECK(source.IsStackSlot());
260      __ movl(destination.AsX86().AsCpuRegister(), Address(ESP, source.GetStackIndex()));
261    }
262  } else {
263    if (source.IsRegister()) {
264      __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsCpuRegister());
265    } else {
266      DCHECK(source.IsStackSlot());
267      __ movl(EAX, Address(ESP, source.GetStackIndex()));
268      __ movl(Address(ESP, destination.GetStackIndex()), EAX);
269    }
270  }
271}
272
273void CodeGeneratorX86::Move64(Location destination, Location source) {
274  if (source.Equals(destination)) {
275    return;
276  }
277  if (destination.IsRegister()) {
278    if (source.IsRegister()) {
279      __ movl(destination.AsX86().AsRegisterPairLow(), source.AsX86().AsRegisterPairLow());
280      __ movl(destination.AsX86().AsRegisterPairHigh(), source.AsX86().AsRegisterPairHigh());
281    } else if (source.IsQuickParameter()) {
282      uint32_t argument_index = source.GetQuickParameterIndex();
283      InvokeDexCallingConvention calling_convention;
284      __ movl(destination.AsX86().AsRegisterPairLow(),
285              calling_convention.GetRegisterAt(argument_index));
286      __ movl(destination.AsX86().AsRegisterPairHigh(), Address(ESP,
287          calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize) + GetFrameSize()));
288    } else {
289      DCHECK(source.IsDoubleStackSlot());
290      __ movl(destination.AsX86().AsRegisterPairLow(), Address(ESP, source.GetStackIndex()));
291      __ movl(destination.AsX86().AsRegisterPairHigh(),
292              Address(ESP, source.GetHighStackIndex(kX86WordSize)));
293    }
294  } else if (destination.IsQuickParameter()) {
295    InvokeDexCallingConvention calling_convention;
296    uint32_t argument_index = destination.GetQuickParameterIndex();
297    if (source.IsRegister()) {
298      __ movl(calling_convention.GetRegisterAt(argument_index), source.AsX86().AsRegisterPairLow());
299      __ movl(Address(ESP, calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize)),
300              source.AsX86().AsRegisterPairHigh());
301    } else {
302      DCHECK(source.IsDoubleStackSlot());
303      __ movl(calling_convention.GetRegisterAt(argument_index),
304              Address(ESP, source.GetStackIndex()));
305      __ movl(EAX, Address(ESP, source.GetHighStackIndex(kX86WordSize)));
306      __ movl(Address(ESP, calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize)), EAX);
307    }
308  } else {
309    if (source.IsRegister()) {
310      __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsRegisterPairLow());
311      __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)),
312              source.AsX86().AsRegisterPairHigh());
313    } else if (source.IsQuickParameter()) {
314      InvokeDexCallingConvention calling_convention;
315      uint32_t argument_index = source.GetQuickParameterIndex();
316      __ movl(Address(ESP, destination.GetStackIndex()),
317              calling_convention.GetRegisterAt(argument_index));
318      __ movl(EAX, Address(ESP,
319          calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize) + GetFrameSize()));
320      __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)), EAX);
321    } else {
322      DCHECK(source.IsDoubleStackSlot());
323      __ movl(EAX, Address(ESP, source.GetStackIndex()));
324      __ movl(Address(ESP, destination.GetStackIndex()), EAX);
325      __ movl(EAX, Address(ESP, source.GetHighStackIndex(kX86WordSize)));
326      __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)), EAX);
327    }
328  }
329}
330
331void CodeGeneratorX86::Move(HInstruction* instruction, Location location, HInstruction* move_for) {
332  if (instruction->AsIntConstant() != nullptr) {
333    Immediate imm(instruction->AsIntConstant()->GetValue());
334    if (location.IsRegister()) {
335      __ movl(location.AsX86().AsCpuRegister(), imm);
336    } else {
337      __ movl(Address(ESP, location.GetStackIndex()), imm);
338    }
339  } else if (instruction->AsLongConstant() != nullptr) {
340    int64_t value = instruction->AsLongConstant()->GetValue();
341    if (location.IsRegister()) {
342      __ movl(location.AsX86().AsRegisterPairLow(), Immediate(Low32Bits(value)));
343      __ movl(location.AsX86().AsRegisterPairHigh(), Immediate(High32Bits(value)));
344    } else {
345      __ movl(Address(ESP, location.GetStackIndex()), Immediate(Low32Bits(value)));
346      __ movl(Address(ESP, location.GetHighStackIndex(kX86WordSize)), Immediate(High32Bits(value)));
347    }
348  } else if (instruction->AsLoadLocal() != nullptr) {
349    switch (instruction->GetType()) {
350      case Primitive::kPrimBoolean:
351      case Primitive::kPrimByte:
352      case Primitive::kPrimChar:
353      case Primitive::kPrimShort:
354      case Primitive::kPrimInt:
355      case Primitive::kPrimNot:
356        Move32(location, Location::StackSlot(GetStackSlot(instruction->AsLoadLocal()->GetLocal())));
357        break;
358
359      case Primitive::kPrimLong:
360        Move64(location, Location::DoubleStackSlot(
361            GetStackSlot(instruction->AsLoadLocal()->GetLocal())));
362        break;
363
364      default:
365        LOG(FATAL) << "Unimplemented local type " << instruction->GetType();
366    }
367  } else {
368    // This can currently only happen when the instruction that requests the move
369    // is the next to be compiled.
370    DCHECK_EQ(instruction->GetNext(), move_for);
371    switch (instruction->GetType()) {
372      case Primitive::kPrimBoolean:
373      case Primitive::kPrimByte:
374      case Primitive::kPrimChar:
375      case Primitive::kPrimShort:
376      case Primitive::kPrimInt:
377      case Primitive::kPrimNot:
378        Move32(location, instruction->GetLocations()->Out());
379        break;
380
381      case Primitive::kPrimLong:
382        Move64(location, instruction->GetLocations()->Out());
383        break;
384
385      default:
386        LOG(FATAL) << "Unimplemented type " << instruction->GetType();
387    }
388  }
389}
390
391void LocationsBuilderX86::VisitGoto(HGoto* got) {
392  got->SetLocations(nullptr);
393}
394
395void InstructionCodeGeneratorX86::VisitGoto(HGoto* got) {
396  HBasicBlock* successor = got->GetSuccessor();
397  if (GetGraph()->GetExitBlock() == successor) {
398    codegen_->GenerateFrameExit();
399  } else if (!codegen_->GoesToNextBlock(got->GetBlock(), successor)) {
400    __ jmp(codegen_->GetLabelOf(successor));
401  }
402}
403
404void LocationsBuilderX86::VisitExit(HExit* exit) {
405  exit->SetLocations(nullptr);
406}
407
408void InstructionCodeGeneratorX86::VisitExit(HExit* exit) {
409  if (kIsDebugBuild) {
410    __ Comment("Unreachable");
411    __ int3();
412  }
413}
414
415void LocationsBuilderX86::VisitIf(HIf* if_instr) {
416  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(if_instr);
417  locations->SetInAt(0, Location::Any());
418  if_instr->SetLocations(locations);
419}
420
421void InstructionCodeGeneratorX86::VisitIf(HIf* if_instr) {
422  // TODO: Generate the input as a condition, instead of materializing in a register.
423  Location location = if_instr->GetLocations()->InAt(0);
424  if (location.IsRegister()) {
425    __ cmpl(location.AsX86().AsCpuRegister(), Immediate(0));
426  } else {
427    __ cmpl(Address(ESP, location.GetStackIndex()), Immediate(0));
428  }
429  __ j(kEqual, codegen_->GetLabelOf(if_instr->IfFalseSuccessor()));
430  if (!codegen_->GoesToNextBlock(if_instr->GetBlock(), if_instr->IfTrueSuccessor())) {
431    __ jmp(codegen_->GetLabelOf(if_instr->IfTrueSuccessor()));
432  }
433}
434
435void LocationsBuilderX86::VisitLocal(HLocal* local) {
436  local->SetLocations(nullptr);
437}
438
439void InstructionCodeGeneratorX86::VisitLocal(HLocal* local) {
440  DCHECK_EQ(local->GetBlock(), GetGraph()->GetEntryBlock());
441}
442
443void LocationsBuilderX86::VisitLoadLocal(HLoadLocal* local) {
444  local->SetLocations(nullptr);
445}
446
447void InstructionCodeGeneratorX86::VisitLoadLocal(HLoadLocal* load) {
448  // Nothing to do, this is driven by the code generator.
449}
450
451void LocationsBuilderX86::VisitStoreLocal(HStoreLocal* store) {
452  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(store);
453  switch (store->InputAt(1)->GetType()) {
454    case Primitive::kPrimBoolean:
455    case Primitive::kPrimByte:
456    case Primitive::kPrimChar:
457    case Primitive::kPrimShort:
458    case Primitive::kPrimInt:
459    case Primitive::kPrimNot:
460      locations->SetInAt(1, Location::StackSlot(codegen_->GetStackSlot(store->GetLocal())));
461      break;
462
463    case Primitive::kPrimLong:
464      locations->SetInAt(1, Location::DoubleStackSlot(codegen_->GetStackSlot(store->GetLocal())));
465      break;
466
467    default:
468      LOG(FATAL) << "Unimplemented local type " << store->InputAt(1)->GetType();
469  }
470  store->SetLocations(locations);
471}
472
473void InstructionCodeGeneratorX86::VisitStoreLocal(HStoreLocal* store) {
474}
475
476void LocationsBuilderX86::VisitEqual(HEqual* equal) {
477  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(equal);
478  locations->SetInAt(0, Location::RequiresRegister());
479  locations->SetInAt(1, Location::Any());
480  locations->SetOut(Location::SameAsFirstInput());
481  equal->SetLocations(locations);
482}
483
484void InstructionCodeGeneratorX86::VisitEqual(HEqual* equal) {
485  LocationSummary* locations = equal->GetLocations();
486  if (locations->InAt(1).IsRegister()) {
487    __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(),
488            locations->InAt(1).AsX86().AsCpuRegister());
489  } else {
490    __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(),
491            Address(ESP, locations->InAt(1).GetStackIndex()));
492  }
493  __ setb(kEqual, locations->Out().AsX86().AsCpuRegister());
494}
495
496void LocationsBuilderX86::VisitIntConstant(HIntConstant* constant) {
497  constant->SetLocations(nullptr);
498}
499
500void InstructionCodeGeneratorX86::VisitIntConstant(HIntConstant* constant) {
501  // Will be generated at use site.
502}
503
504void LocationsBuilderX86::VisitLongConstant(HLongConstant* constant) {
505  constant->SetLocations(nullptr);
506}
507
508void InstructionCodeGeneratorX86::VisitLongConstant(HLongConstant* constant) {
509  // Will be generated at use site.
510}
511
512void LocationsBuilderX86::VisitReturnVoid(HReturnVoid* ret) {
513  ret->SetLocations(nullptr);
514}
515
516void InstructionCodeGeneratorX86::VisitReturnVoid(HReturnVoid* ret) {
517  codegen_->GenerateFrameExit();
518  __ ret();
519}
520
521void LocationsBuilderX86::VisitReturn(HReturn* ret) {
522  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(ret);
523  switch (ret->InputAt(0)->GetType()) {
524    case Primitive::kPrimBoolean:
525    case Primitive::kPrimByte:
526    case Primitive::kPrimChar:
527    case Primitive::kPrimShort:
528    case Primitive::kPrimInt:
529    case Primitive::kPrimNot:
530      locations->SetInAt(0, X86CpuLocation(EAX));
531      break;
532
533    case Primitive::kPrimLong:
534      locations->SetInAt(
535          0, Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(EAX_EDX)));
536      break;
537
538    default:
539      LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType();
540  }
541  ret->SetLocations(locations);
542}
543
544void InstructionCodeGeneratorX86::VisitReturn(HReturn* ret) {
545  if (kIsDebugBuild) {
546    switch (ret->InputAt(0)->GetType()) {
547      case Primitive::kPrimBoolean:
548      case Primitive::kPrimByte:
549      case Primitive::kPrimChar:
550      case Primitive::kPrimShort:
551      case Primitive::kPrimInt:
552      case Primitive::kPrimNot:
553        DCHECK_EQ(ret->GetLocations()->InAt(0).AsX86().AsCpuRegister(), EAX);
554        break;
555
556      case Primitive::kPrimLong:
557        DCHECK_EQ(ret->GetLocations()->InAt(0).AsX86().AsRegisterPair(), EAX_EDX);
558        break;
559
560      default:
561        LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType();
562    }
563  }
564  codegen_->GenerateFrameExit();
565  __ ret();
566}
567
568void LocationsBuilderX86::VisitInvokeStatic(HInvokeStatic* invoke) {
569  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(invoke);
570  locations->AddTemp(Location::RequiresRegister());
571
572  InvokeDexCallingConventionVisitor calling_convention_visitor;
573  for (size_t i = 0; i < invoke->InputCount(); i++) {
574    HInstruction* input = invoke->InputAt(i);
575    locations->SetInAt(i, calling_convention_visitor.GetNextLocation(input->GetType()));
576  }
577
578  switch (invoke->GetType()) {
579    case Primitive::kPrimBoolean:
580    case Primitive::kPrimByte:
581    case Primitive::kPrimChar:
582    case Primitive::kPrimShort:
583    case Primitive::kPrimInt:
584    case Primitive::kPrimNot:
585      locations->SetOut(X86CpuLocation(EAX));
586      break;
587
588    case Primitive::kPrimLong:
589      locations->SetOut(Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(EAX_EDX)));
590      break;
591
592    case Primitive::kPrimVoid:
593      break;
594
595    case Primitive::kPrimDouble:
596    case Primitive::kPrimFloat:
597      LOG(FATAL) << "Unimplemented return type " << invoke->GetType();
598      break;
599  }
600
601  invoke->SetLocations(locations);
602}
603
604void InstructionCodeGeneratorX86::VisitInvokeStatic(HInvokeStatic* invoke) {
605  Register temp = invoke->GetLocations()->GetTemp(0).AsX86().AsCpuRegister();
606  size_t index_in_cache = mirror::Array::DataOffset(sizeof(mirror::Object*)).Int32Value() +
607      invoke->GetIndexInDexCache() * kX86WordSize;
608
609  // TODO: Implement all kinds of calls:
610  // 1) boot -> boot
611  // 2) app -> boot
612  // 3) app -> app
613  //
614  // Currently we implement the app -> app logic, which looks up in the resolve cache.
615
616  // temp = method;
617  LoadCurrentMethod(temp);
618  // temp = temp->dex_cache_resolved_methods_;
619  __ movl(temp, Address(temp, mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value()));
620  // temp = temp[index_in_cache]
621  __ movl(temp, Address(temp, index_in_cache));
622  // (temp + offset_of_quick_compiled_code)()
623  __ call(Address(temp, mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset().Int32Value()));
624
625  codegen_->RecordPcInfo(invoke->GetDexPc());
626}
627
628void LocationsBuilderX86::VisitAdd(HAdd* add) {
629  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(add);
630  switch (add->GetResultType()) {
631    case Primitive::kPrimInt:
632    case Primitive::kPrimLong: {
633      locations->SetInAt(0, Location::RequiresRegister());
634      locations->SetInAt(1, Location::Any());
635      locations->SetOut(Location::SameAsFirstInput());
636      break;
637    }
638
639    case Primitive::kPrimBoolean:
640    case Primitive::kPrimByte:
641    case Primitive::kPrimChar:
642    case Primitive::kPrimShort:
643      LOG(FATAL) << "Unexpected add type " << add->GetResultType();
644      break;
645
646    default:
647      LOG(FATAL) << "Unimplemented add type " << add->GetResultType();
648  }
649  add->SetLocations(locations);
650}
651
652void InstructionCodeGeneratorX86::VisitAdd(HAdd* add) {
653  LocationSummary* locations = add->GetLocations();
654  switch (add->GetResultType()) {
655    case Primitive::kPrimInt: {
656      DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(),
657                locations->Out().AsX86().AsCpuRegister());
658      if (locations->InAt(1).IsRegister()) {
659        __ addl(locations->InAt(0).AsX86().AsCpuRegister(),
660                locations->InAt(1).AsX86().AsCpuRegister());
661      } else {
662        __ addl(locations->InAt(0).AsX86().AsCpuRegister(),
663                Address(ESP, locations->InAt(1).GetStackIndex()));
664      }
665      break;
666    }
667
668    case Primitive::kPrimLong: {
669      DCHECK_EQ(locations->InAt(0).AsX86().AsRegisterPair(),
670                locations->Out().AsX86().AsRegisterPair());
671      if (locations->InAt(1).IsRegister()) {
672        __ addl(locations->InAt(0).AsX86().AsRegisterPairLow(),
673                locations->InAt(1).AsX86().AsRegisterPairLow());
674        __ adcl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
675                locations->InAt(1).AsX86().AsRegisterPairHigh());
676      } else {
677        __ addl(locations->InAt(0).AsX86().AsRegisterPairLow(),
678                Address(ESP, locations->InAt(1).GetStackIndex()));
679        __ adcl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
680                Address(ESP, locations->InAt(1).GetHighStackIndex(kX86WordSize)));
681      }
682      break;
683    }
684
685    case Primitive::kPrimBoolean:
686    case Primitive::kPrimByte:
687    case Primitive::kPrimChar:
688    case Primitive::kPrimShort:
689      LOG(FATAL) << "Unexpected add type " << add->GetResultType();
690      break;
691
692    default:
693      LOG(FATAL) << "Unimplemented add type " << add->GetResultType();
694  }
695}
696
697void LocationsBuilderX86::VisitSub(HSub* sub) {
698  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(sub);
699  switch (sub->GetResultType()) {
700    case Primitive::kPrimInt:
701    case Primitive::kPrimLong: {
702      locations->SetInAt(0, Location::RequiresRegister());
703      locations->SetInAt(1, Location::Any());
704      locations->SetOut(Location::SameAsFirstInput());
705      break;
706    }
707
708    case Primitive::kPrimBoolean:
709    case Primitive::kPrimByte:
710    case Primitive::kPrimChar:
711    case Primitive::kPrimShort:
712      LOG(FATAL) << "Unexpected sub type " << sub->GetResultType();
713      break;
714
715    default:
716      LOG(FATAL) << "Unimplemented sub type " << sub->GetResultType();
717  }
718  sub->SetLocations(locations);
719}
720
721void InstructionCodeGeneratorX86::VisitSub(HSub* sub) {
722  LocationSummary* locations = sub->GetLocations();
723  switch (sub->GetResultType()) {
724    case Primitive::kPrimInt: {
725      DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(),
726                locations->Out().AsX86().AsCpuRegister());
727      if (locations->InAt(1).IsRegister()) {
728        __ subl(locations->InAt(0).AsX86().AsCpuRegister(),
729                locations->InAt(1).AsX86().AsCpuRegister());
730      } else {
731        __ subl(locations->InAt(0).AsX86().AsCpuRegister(),
732                Address(ESP, locations->InAt(1).GetStackIndex()));
733      }
734      break;
735    }
736
737    case Primitive::kPrimLong: {
738      DCHECK_EQ(locations->InAt(0).AsX86().AsRegisterPair(),
739                locations->Out().AsX86().AsRegisterPair());
740      if (locations->InAt(1).IsRegister()) {
741        __ subl(locations->InAt(0).AsX86().AsRegisterPairLow(),
742                locations->InAt(1).AsX86().AsRegisterPairLow());
743        __ sbbl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
744                locations->InAt(1).AsX86().AsRegisterPairHigh());
745      } else {
746        __ subl(locations->InAt(0).AsX86().AsRegisterPairLow(),
747                Address(ESP, locations->InAt(1).GetStackIndex()));
748        __ sbbl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
749                Address(ESP, locations->InAt(1).GetHighStackIndex(kX86WordSize)));
750      }
751      break;
752    }
753
754    case Primitive::kPrimBoolean:
755    case Primitive::kPrimByte:
756    case Primitive::kPrimChar:
757    case Primitive::kPrimShort:
758      LOG(FATAL) << "Unexpected sub type " << sub->GetResultType();
759      break;
760
761    default:
762      LOG(FATAL) << "Unimplemented sub type " << sub->GetResultType();
763  }
764}
765
766void LocationsBuilderX86::VisitNewInstance(HNewInstance* instruction) {
767  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
768  locations->SetOut(X86CpuLocation(EAX));
769  InvokeRuntimeCallingConvention calling_convention;
770  locations->AddTemp(X86CpuLocation(calling_convention.GetRegisterAt(0)));
771  locations->AddTemp(X86CpuLocation(calling_convention.GetRegisterAt(1)));
772  instruction->SetLocations(locations);
773}
774
775void InstructionCodeGeneratorX86::VisitNewInstance(HNewInstance* instruction) {
776  InvokeRuntimeCallingConvention calling_convention;
777  LoadCurrentMethod(calling_convention.GetRegisterAt(1));
778  __ movl(calling_convention.GetRegisterAt(0), Immediate(instruction->GetTypeIndex()));
779
780  __ fs()->call(
781      Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pAllocObjectWithAccessCheck)));
782
783  codegen_->RecordPcInfo(instruction->GetDexPc());
784}
785
786void LocationsBuilderX86::VisitParameterValue(HParameterValue* instruction) {
787  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
788  Location location = parameter_visitor_.GetNextLocation(instruction->GetType());
789  if (location.IsStackSlot()) {
790    location = Location::StackSlot(location.GetStackIndex() + codegen_->GetFrameSize());
791  } else if (location.IsDoubleStackSlot()) {
792    location = Location::DoubleStackSlot(location.GetStackIndex() + codegen_->GetFrameSize());
793  }
794  locations->SetOut(location);
795  instruction->SetLocations(locations);
796}
797
798void InstructionCodeGeneratorX86::VisitParameterValue(HParameterValue* instruction) {
799  // Nothing to do, the parameter is already at its location.
800}
801
802void LocationsBuilderX86::VisitNot(HNot* instruction) {
803  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
804  locations->SetInAt(0, Location::RequiresRegister());
805  locations->SetOut(Location::SameAsFirstInput());
806  instruction->SetLocations(locations);
807}
808
809void InstructionCodeGeneratorX86::VisitNot(HNot* instruction) {
810  LocationSummary* locations = instruction->GetLocations();
811  Location out = locations->Out();
812  DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(), out.AsX86().AsCpuRegister());
813  __ xorl(out.AsX86().AsCpuRegister(), Immediate(1));
814}
815
816void LocationsBuilderX86::VisitPhi(HPhi* instruction) {
817  LOG(FATAL) << "Unimplemented";
818}
819
820void InstructionCodeGeneratorX86::VisitPhi(HPhi* instruction) {
821  LOG(FATAL) << "Unimplemented";
822}
823
824void LocationsBuilderX86::VisitParallelMove(HParallelMove* instruction) {
825  LOG(FATAL) << "Unimplemented";
826}
827
828void InstructionCodeGeneratorX86::VisitParallelMove(HParallelMove* instruction) {
829  LOG(FATAL) << "Unimplemented";
830}
831
832}  // namespace x86
833}  // namespace art
834