code_generator_x86.cc revision b0fa5dc7769c1e054032f39de0a3f6d6dd06f8cf 
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
40CodeGeneratorX86::CodeGeneratorX86(HGraph* graph)
41    : CodeGenerator(graph, kNumberOfRegIds),
42      location_builder_(graph, this),
43      instruction_visitor_(graph, this) {}
44
45static bool* GetBlockedRegisterPairs(bool* blocked_registers) {
46  return blocked_registers + kNumberOfAllocIds;
47}
48
49ManagedRegister CodeGeneratorX86::AllocateFreeRegister(Primitive::Type type,
50                                                       bool* blocked_registers) const {
51  switch (type) {
52    case Primitive::kPrimLong: {
53      size_t reg = AllocateFreeRegisterInternal(
54          GetBlockedRegisterPairs(blocked_registers), kNumberOfRegisterPairs);
55      X86ManagedRegister pair =
56          X86ManagedRegister::FromRegisterPair(static_cast<RegisterPair>(reg));
57      blocked_registers[pair.AsRegisterPairLow()] = true;
58      blocked_registers[pair.AsRegisterPairHigh()] = true;
59      return pair;
60    }
61
62    case Primitive::kPrimByte:
63    case Primitive::kPrimBoolean:
64    case Primitive::kPrimChar:
65    case Primitive::kPrimShort:
66    case Primitive::kPrimInt:
67    case Primitive::kPrimNot: {
68      size_t reg = AllocateFreeRegisterInternal(blocked_registers, kNumberOfCpuRegisters);
69      return X86ManagedRegister::FromCpuRegister(static_cast<Register>(reg));
70    }
71
72    case Primitive::kPrimFloat:
73    case Primitive::kPrimDouble:
74      LOG(FATAL) << "Unimplemented register type " << type;
75
76    case Primitive::kPrimVoid:
77      LOG(FATAL) << "Unreachable type " << type;
78  }
79
80  return ManagedRegister::NoRegister();
81}
82
83void CodeGeneratorX86::SetupBlockedRegisters(bool* blocked_registers) const {
84  bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers);
85
86  // Don't allocate the dalvik style register pair passing.
87  blocked_register_pairs[ECX_EDX] = true;
88
89  // Stack register is always reserved.
90  blocked_registers[ESP] = true;
91
92  // TODO: We currently don't use Quick's callee saved registers.
93  blocked_registers[EBP] = true;
94  blocked_registers[ESI] = true;
95  blocked_registers[EDI] = true;
96  blocked_register_pairs[EAX_EDI] = true;
97  blocked_register_pairs[EDX_EDI] = true;
98  blocked_register_pairs[ECX_EDI] = true;
99  blocked_register_pairs[EBX_EDI] = true;
100}
101
102size_t CodeGeneratorX86::GetNumberOfRegisters() const {
103  return kNumberOfRegIds;
104}
105
106static Location X86CpuLocation(Register reg) {
107  return Location::RegisterLocation(X86ManagedRegister::FromCpuRegister(reg));
108}
109
110InstructionCodeGeneratorX86::InstructionCodeGeneratorX86(HGraph* graph, CodeGeneratorX86* codegen)
111      : HGraphVisitor(graph),
112        assembler_(codegen->GetAssembler()),
113        codegen_(codegen) {}
114
115void CodeGeneratorX86::GenerateFrameEntry() {
116  // Create a fake register to mimic Quick.
117  static const int kFakeReturnRegister = 8;
118  core_spill_mask_ |= (1 << kFakeReturnRegister);
119
120  SetFrameSize(RoundUp(
121      (GetGraph()->GetMaximumNumberOfOutVRegs() + GetGraph()->GetNumberOfVRegs()) * kVRegSize
122      + kVRegSize  // filler
123      + kX86WordSize  // Art method
124      + kNumberOfPushedRegistersAtEntry * kX86WordSize,
125      kStackAlignment));
126
127  // The return PC has already been pushed on the stack.
128  __ subl(ESP, Immediate(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize));
129  __ movl(Address(ESP, kCurrentMethodStackOffset), EAX);
130}
131
132void CodeGeneratorX86::GenerateFrameExit() {
133  __ addl(ESP, Immediate(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize));
134}
135
136void CodeGeneratorX86::Bind(Label* label) {
137  __ Bind(label);
138}
139
140void InstructionCodeGeneratorX86::LoadCurrentMethod(Register reg) {
141  __ movl(reg, Address(ESP, kCurrentMethodStackOffset));
142}
143
144int32_t CodeGeneratorX86::GetStackSlot(HLocal* local) const {
145  uint16_t reg_number = local->GetRegNumber();
146  uint16_t number_of_vregs = GetGraph()->GetNumberOfVRegs();
147  uint16_t number_of_in_vregs = GetGraph()->GetNumberOfInVRegs();
148  if (reg_number >= number_of_vregs - number_of_in_vregs) {
149    // Local is a parameter of the method. It is stored in the caller's frame.
150    return GetFrameSize() + kX86WordSize  // ART method
151                          + (reg_number - number_of_vregs + number_of_in_vregs) * kVRegSize;
152  } else {
153    // Local is a temporary in this method. It is stored in this method's frame.
154    return GetFrameSize() - (kNumberOfPushedRegistersAtEntry * kX86WordSize)
155                          - kVRegSize  // filler.
156                          - (number_of_vregs * kVRegSize)
157                          + (reg_number * kVRegSize);
158  }
159}
160
161
162Location CodeGeneratorX86::GetStackLocation(HLoadLocal* load) const {
163  switch (load->GetType()) {
164    case Primitive::kPrimLong:
165      return Location::DoubleStackSlot(GetStackSlot(load->GetLocal()));
166      break;
167
168    case Primitive::kPrimInt:
169    case Primitive::kPrimNot:
170      return Location::StackSlot(GetStackSlot(load->GetLocal()));
171
172    case Primitive::kPrimFloat:
173    case Primitive::kPrimDouble:
174      LOG(FATAL) << "Unimplemented type " << load->GetType();
175
176    case Primitive::kPrimBoolean:
177    case Primitive::kPrimByte:
178    case Primitive::kPrimChar:
179    case Primitive::kPrimShort:
180    case Primitive::kPrimVoid:
181      LOG(FATAL) << "Unexpected type " << load->GetType();
182  }
183
184  LOG(FATAL) << "Unreachable";
185  return Location();
186}
187
188static constexpr Register kRuntimeParameterCoreRegisters[] = { EAX, ECX, EDX };
189static constexpr size_t kRuntimeParameterCoreRegistersLength =
190    arraysize(kRuntimeParameterCoreRegisters);
191
192class InvokeRuntimeCallingConvention : public CallingConvention<Register> {
193 public:
194  InvokeRuntimeCallingConvention()
195      : CallingConvention(kRuntimeParameterCoreRegisters,
196                          kRuntimeParameterCoreRegistersLength) {}
197
198 private:
199  DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention);
200};
201
202Location InvokeDexCallingConventionVisitor::GetNextLocation(Primitive::Type type) {
203  switch (type) {
204    case Primitive::kPrimBoolean:
205    case Primitive::kPrimByte:
206    case Primitive::kPrimChar:
207    case Primitive::kPrimShort:
208    case Primitive::kPrimInt:
209    case Primitive::kPrimNot: {
210      uint32_t index = gp_index_++;
211      if (index < calling_convention.GetNumberOfRegisters()) {
212        return X86CpuLocation(calling_convention.GetRegisterAt(index));
213      } else {
214        return Location::StackSlot(calling_convention.GetStackOffsetOf(index, kX86WordSize));
215      }
216    }
217
218    case Primitive::kPrimLong: {
219      uint32_t index = gp_index_;
220      gp_index_ += 2;
221      if (index + 1 < calling_convention.GetNumberOfRegisters()) {
222        return Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(
223            calling_convention.GetRegisterPairAt(index)));
224      } else if (index + 1 == calling_convention.GetNumberOfRegisters()) {
225        return Location::QuickParameter(index);
226      } else {
227        return Location::DoubleStackSlot(calling_convention.GetStackOffsetOf(index, kX86WordSize));
228      }
229    }
230
231    case Primitive::kPrimDouble:
232    case Primitive::kPrimFloat:
233      LOG(FATAL) << "Unimplemented parameter type " << type;
234      break;
235
236    case Primitive::kPrimVoid:
237      LOG(FATAL) << "Unexpected parameter type " << type;
238      break;
239  }
240  return Location();
241}
242
243void CodeGeneratorX86::Move32(Location destination, Location source) {
244  if (source.Equals(destination)) {
245    return;
246  }
247  if (destination.IsRegister()) {
248    if (source.IsRegister()) {
249      __ movl(destination.AsX86().AsCpuRegister(), source.AsX86().AsCpuRegister());
250    } else {
251      DCHECK(source.IsStackSlot());
252      __ movl(destination.AsX86().AsCpuRegister(), Address(ESP, source.GetStackIndex()));
253    }
254  } else {
255    if (source.IsRegister()) {
256      __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsCpuRegister());
257    } else {
258      DCHECK(source.IsStackSlot());
259      __ movl(EAX, Address(ESP, source.GetStackIndex()));
260      __ movl(Address(ESP, destination.GetStackIndex()), EAX);
261    }
262  }
263}
264
265void CodeGeneratorX86::Move64(Location destination, Location source) {
266  if (source.Equals(destination)) {
267    return;
268  }
269  if (destination.IsRegister()) {
270    if (source.IsRegister()) {
271      __ movl(destination.AsX86().AsRegisterPairLow(), source.AsX86().AsRegisterPairLow());
272      __ movl(destination.AsX86().AsRegisterPairHigh(), source.AsX86().AsRegisterPairHigh());
273    } else if (source.IsQuickParameter()) {
274      uint32_t argument_index = source.GetQuickParameterIndex();
275      InvokeDexCallingConvention calling_convention;
276      __ movl(destination.AsX86().AsRegisterPairLow(),
277              calling_convention.GetRegisterAt(argument_index));
278      __ movl(destination.AsX86().AsRegisterPairHigh(), Address(ESP,
279          calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize) + GetFrameSize()));
280    } else {
281      DCHECK(source.IsDoubleStackSlot());
282      __ movl(destination.AsX86().AsRegisterPairLow(), Address(ESP, source.GetStackIndex()));
283      __ movl(destination.AsX86().AsRegisterPairHigh(),
284              Address(ESP, source.GetHighStackIndex(kX86WordSize)));
285    }
286  } else if (destination.IsQuickParameter()) {
287    InvokeDexCallingConvention calling_convention;
288    uint32_t argument_index = destination.GetQuickParameterIndex();
289    if (source.IsRegister()) {
290      __ movl(calling_convention.GetRegisterAt(argument_index), source.AsX86().AsRegisterPairLow());
291      __ movl(Address(ESP, calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize)),
292              source.AsX86().AsRegisterPairHigh());
293    } else {
294      DCHECK(source.IsDoubleStackSlot());
295      __ movl(calling_convention.GetRegisterAt(argument_index),
296              Address(ESP, source.GetStackIndex()));
297      __ movl(EAX, Address(ESP, source.GetHighStackIndex(kX86WordSize)));
298      __ movl(Address(ESP, calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize)), EAX);
299    }
300  } else {
301    if (source.IsRegister()) {
302      __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsRegisterPairLow());
303      __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)),
304              source.AsX86().AsRegisterPairHigh());
305    } else if (source.IsQuickParameter()) {
306      InvokeDexCallingConvention calling_convention;
307      uint32_t argument_index = source.GetQuickParameterIndex();
308      __ movl(Address(ESP, destination.GetStackIndex()),
309              calling_convention.GetRegisterAt(argument_index));
310      __ movl(EAX, Address(ESP,
311          calling_convention.GetStackOffsetOf(argument_index + 1, kX86WordSize) + GetFrameSize()));
312      __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)), EAX);
313    } else {
314      DCHECK(source.IsDoubleStackSlot());
315      __ movl(EAX, Address(ESP, source.GetStackIndex()));
316      __ movl(Address(ESP, destination.GetStackIndex()), EAX);
317      __ movl(EAX, Address(ESP, source.GetHighStackIndex(kX86WordSize)));
318      __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)), EAX);
319    }
320  }
321}
322
323void CodeGeneratorX86::Move(HInstruction* instruction, Location location, HInstruction* move_for) {
324  if (instruction->AsIntConstant() != nullptr) {
325    Immediate imm(instruction->AsIntConstant()->GetValue());
326    if (location.IsRegister()) {
327      __ movl(location.AsX86().AsCpuRegister(), imm);
328    } else {
329      __ movl(Address(ESP, location.GetStackIndex()), imm);
330    }
331  } else if (instruction->AsLongConstant() != nullptr) {
332    int64_t value = instruction->AsLongConstant()->GetValue();
333    if (location.IsRegister()) {
334      __ movl(location.AsX86().AsRegisterPairLow(), Immediate(Low32Bits(value)));
335      __ movl(location.AsX86().AsRegisterPairHigh(), Immediate(High32Bits(value)));
336    } else {
337      __ movl(Address(ESP, location.GetStackIndex()), Immediate(Low32Bits(value)));
338      __ movl(Address(ESP, location.GetHighStackIndex(kX86WordSize)), Immediate(High32Bits(value)));
339    }
340  } else if (instruction->AsLoadLocal() != nullptr) {
341    switch (instruction->GetType()) {
342      case Primitive::kPrimBoolean:
343      case Primitive::kPrimByte:
344      case Primitive::kPrimChar:
345      case Primitive::kPrimShort:
346      case Primitive::kPrimInt:
347      case Primitive::kPrimNot:
348        Move32(location, Location::StackSlot(GetStackSlot(instruction->AsLoadLocal()->GetLocal())));
349        break;
350
351      case Primitive::kPrimLong:
352        Move64(location, Location::DoubleStackSlot(
353            GetStackSlot(instruction->AsLoadLocal()->GetLocal())));
354        break;
355
356      default:
357        LOG(FATAL) << "Unimplemented local type " << instruction->GetType();
358    }
359  } else {
360    // This can currently only happen when the instruction that requests the move
361    // is the next to be compiled.
362    DCHECK_EQ(instruction->GetNext(), move_for);
363    switch (instruction->GetType()) {
364      case Primitive::kPrimBoolean:
365      case Primitive::kPrimByte:
366      case Primitive::kPrimChar:
367      case Primitive::kPrimShort:
368      case Primitive::kPrimInt:
369      case Primitive::kPrimNot:
370        Move32(location, instruction->GetLocations()->Out());
371        break;
372
373      case Primitive::kPrimLong:
374        Move64(location, instruction->GetLocations()->Out());
375        break;
376
377      default:
378        LOG(FATAL) << "Unimplemented type " << instruction->GetType();
379    }
380  }
381}
382
383void LocationsBuilderX86::VisitGoto(HGoto* got) {
384  got->SetLocations(nullptr);
385}
386
387void InstructionCodeGeneratorX86::VisitGoto(HGoto* got) {
388  HBasicBlock* successor = got->GetSuccessor();
389  if (GetGraph()->GetExitBlock() == successor) {
390    codegen_->GenerateFrameExit();
391  } else if (!codegen_->GoesToNextBlock(got->GetBlock(), successor)) {
392    __ jmp(codegen_->GetLabelOf(successor));
393  }
394}
395
396void LocationsBuilderX86::VisitExit(HExit* exit) {
397  exit->SetLocations(nullptr);
398}
399
400void InstructionCodeGeneratorX86::VisitExit(HExit* exit) {
401  if (kIsDebugBuild) {
402    __ Comment("Unreachable");
403    __ int3();
404  }
405}
406
407void LocationsBuilderX86::VisitIf(HIf* if_instr) {
408  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(if_instr);
409  locations->SetInAt(0, Location::Any());
410  if_instr->SetLocations(locations);
411}
412
413void InstructionCodeGeneratorX86::VisitIf(HIf* if_instr) {
414  // TODO: Generate the input as a condition, instead of materializing in a register.
415  Location location = if_instr->GetLocations()->InAt(0);
416  if (location.IsRegister()) {
417    __ cmpl(location.AsX86().AsCpuRegister(), Immediate(0));
418  } else {
419    __ cmpl(Address(ESP, location.GetStackIndex()), Immediate(0));
420  }
421  __ j(kEqual, codegen_->GetLabelOf(if_instr->IfFalseSuccessor()));
422  if (!codegen_->GoesToNextBlock(if_instr->GetBlock(), if_instr->IfTrueSuccessor())) {
423    __ jmp(codegen_->GetLabelOf(if_instr->IfTrueSuccessor()));
424  }
425}
426
427void LocationsBuilderX86::VisitLocal(HLocal* local) {
428  local->SetLocations(nullptr);
429}
430
431void InstructionCodeGeneratorX86::VisitLocal(HLocal* local) {
432  DCHECK_EQ(local->GetBlock(), GetGraph()->GetEntryBlock());
433}
434
435void LocationsBuilderX86::VisitLoadLocal(HLoadLocal* local) {
436  local->SetLocations(nullptr);
437}
438
439void InstructionCodeGeneratorX86::VisitLoadLocal(HLoadLocal* load) {
440  // Nothing to do, this is driven by the code generator.
441}
442
443void LocationsBuilderX86::VisitStoreLocal(HStoreLocal* store) {
444  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(store);
445  switch (store->InputAt(1)->GetType()) {
446    case Primitive::kPrimBoolean:
447    case Primitive::kPrimByte:
448    case Primitive::kPrimChar:
449    case Primitive::kPrimShort:
450    case Primitive::kPrimInt:
451    case Primitive::kPrimNot:
452      locations->SetInAt(1, Location::StackSlot(codegen_->GetStackSlot(store->GetLocal())));
453      break;
454
455    case Primitive::kPrimLong:
456      locations->SetInAt(1, Location::DoubleStackSlot(codegen_->GetStackSlot(store->GetLocal())));
457      break;
458
459    default:
460      LOG(FATAL) << "Unimplemented local type " << store->InputAt(1)->GetType();
461  }
462  store->SetLocations(locations);
463}
464
465void InstructionCodeGeneratorX86::VisitStoreLocal(HStoreLocal* store) {
466}
467
468void LocationsBuilderX86::VisitEqual(HEqual* equal) {
469  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(equal);
470  locations->SetInAt(0, Location::RequiresRegister());
471  locations->SetInAt(1, Location::Any());
472  locations->SetOut(Location::SameAsFirstInput());
473  equal->SetLocations(locations);
474}
475
476void InstructionCodeGeneratorX86::VisitEqual(HEqual* equal) {
477  LocationSummary* locations = equal->GetLocations();
478  if (locations->InAt(1).IsRegister()) {
479    __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(),
480            locations->InAt(1).AsX86().AsCpuRegister());
481  } else {
482    __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(),
483            Address(ESP, locations->InAt(1).GetStackIndex()));
484  }
485  __ setb(kEqual, locations->Out().AsX86().AsCpuRegister());
486}
487
488void LocationsBuilderX86::VisitIntConstant(HIntConstant* constant) {
489  constant->SetLocations(nullptr);
490}
491
492void InstructionCodeGeneratorX86::VisitIntConstant(HIntConstant* constant) {
493  // Will be generated at use site.
494}
495
496void LocationsBuilderX86::VisitLongConstant(HLongConstant* constant) {
497  constant->SetLocations(nullptr);
498}
499
500void InstructionCodeGeneratorX86::VisitLongConstant(HLongConstant* constant) {
501  // Will be generated at use site.
502}
503
504void LocationsBuilderX86::VisitReturnVoid(HReturnVoid* ret) {
505  ret->SetLocations(nullptr);
506}
507
508void InstructionCodeGeneratorX86::VisitReturnVoid(HReturnVoid* ret) {
509  codegen_->GenerateFrameExit();
510  __ ret();
511}
512
513void LocationsBuilderX86::VisitReturn(HReturn* ret) {
514  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(ret);
515  switch (ret->InputAt(0)->GetType()) {
516    case Primitive::kPrimBoolean:
517    case Primitive::kPrimByte:
518    case Primitive::kPrimChar:
519    case Primitive::kPrimShort:
520    case Primitive::kPrimInt:
521    case Primitive::kPrimNot:
522      locations->SetInAt(0, X86CpuLocation(EAX));
523      break;
524
525    case Primitive::kPrimLong:
526      locations->SetInAt(
527          0, Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(EAX_EDX)));
528      break;
529
530    default:
531      LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType();
532  }
533  ret->SetLocations(locations);
534}
535
536void InstructionCodeGeneratorX86::VisitReturn(HReturn* ret) {
537  if (kIsDebugBuild) {
538    switch (ret->InputAt(0)->GetType()) {
539      case Primitive::kPrimBoolean:
540      case Primitive::kPrimByte:
541      case Primitive::kPrimChar:
542      case Primitive::kPrimShort:
543      case Primitive::kPrimInt:
544      case Primitive::kPrimNot:
545        DCHECK_EQ(ret->GetLocations()->InAt(0).AsX86().AsCpuRegister(), EAX);
546        break;
547
548      case Primitive::kPrimLong:
549        DCHECK_EQ(ret->GetLocations()->InAt(0).AsX86().AsRegisterPair(), EAX_EDX);
550        break;
551
552      default:
553        LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType();
554    }
555  }
556  codegen_->GenerateFrameExit();
557  __ ret();
558}
559
560void LocationsBuilderX86::VisitInvokeStatic(HInvokeStatic* invoke) {
561  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(invoke);
562  locations->AddTemp(Location::RequiresRegister());
563
564  InvokeDexCallingConventionVisitor calling_convention_visitor;
565  for (size_t i = 0; i < invoke->InputCount(); i++) {
566    HInstruction* input = invoke->InputAt(i);
567    locations->SetInAt(i, calling_convention_visitor.GetNextLocation(input->GetType()));
568  }
569
570  switch (invoke->GetType()) {
571    case Primitive::kPrimBoolean:
572    case Primitive::kPrimByte:
573    case Primitive::kPrimChar:
574    case Primitive::kPrimShort:
575    case Primitive::kPrimInt:
576    case Primitive::kPrimNot:
577      locations->SetOut(X86CpuLocation(EAX));
578      break;
579
580    case Primitive::kPrimLong:
581      locations->SetOut(Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(EAX_EDX)));
582      break;
583
584    case Primitive::kPrimVoid:
585      break;
586
587    case Primitive::kPrimDouble:
588    case Primitive::kPrimFloat:
589      LOG(FATAL) << "Unimplemented return type " << invoke->GetType();
590      break;
591  }
592
593  invoke->SetLocations(locations);
594}
595
596void InstructionCodeGeneratorX86::VisitInvokeStatic(HInvokeStatic* invoke) {
597  Register temp = invoke->GetLocations()->GetTemp(0).AsX86().AsCpuRegister();
598  size_t index_in_cache = mirror::Array::DataOffset(sizeof(mirror::Object*)).Int32Value() +
599      invoke->GetIndexInDexCache() * kX86WordSize;
600
601  // TODO: Implement all kinds of calls:
602  // 1) boot -> boot
603  // 2) app -> boot
604  // 3) app -> app
605  //
606  // Currently we implement the app -> app logic, which looks up in the resolve cache.
607
608  // temp = method;
609  LoadCurrentMethod(temp);
610  // temp = temp->dex_cache_resolved_methods_;
611  __ movl(temp, Address(temp, mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value()));
612  // temp = temp[index_in_cache]
613  __ movl(temp, Address(temp, index_in_cache));
614  // (temp + offset_of_quick_compiled_code)()
615  __ call(Address(temp, mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset().Int32Value()));
616
617  codegen_->RecordPcInfo(invoke->GetDexPc());
618}
619
620void LocationsBuilderX86::VisitAdd(HAdd* add) {
621  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(add);
622  switch (add->GetResultType()) {
623    case Primitive::kPrimInt:
624    case Primitive::kPrimLong: {
625      locations->SetInAt(0, Location::RequiresRegister());
626      locations->SetInAt(1, Location::Any());
627      locations->SetOut(Location::SameAsFirstInput());
628      break;
629    }
630
631    case Primitive::kPrimBoolean:
632    case Primitive::kPrimByte:
633    case Primitive::kPrimChar:
634    case Primitive::kPrimShort:
635      LOG(FATAL) << "Unexpected add type " << add->GetResultType();
636      break;
637
638    default:
639      LOG(FATAL) << "Unimplemented add type " << add->GetResultType();
640  }
641  add->SetLocations(locations);
642}
643
644void InstructionCodeGeneratorX86::VisitAdd(HAdd* add) {
645  LocationSummary* locations = add->GetLocations();
646  switch (add->GetResultType()) {
647    case Primitive::kPrimInt: {
648      DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(),
649                locations->Out().AsX86().AsCpuRegister());
650      if (locations->InAt(1).IsRegister()) {
651        __ addl(locations->InAt(0).AsX86().AsCpuRegister(),
652                locations->InAt(1).AsX86().AsCpuRegister());
653      } else {
654        __ addl(locations->InAt(0).AsX86().AsCpuRegister(),
655                Address(ESP, locations->InAt(1).GetStackIndex()));
656      }
657      break;
658    }
659
660    case Primitive::kPrimLong: {
661      DCHECK_EQ(locations->InAt(0).AsX86().AsRegisterPair(),
662                locations->Out().AsX86().AsRegisterPair());
663      if (locations->InAt(1).IsRegister()) {
664        __ addl(locations->InAt(0).AsX86().AsRegisterPairLow(),
665                locations->InAt(1).AsX86().AsRegisterPairLow());
666        __ adcl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
667                locations->InAt(1).AsX86().AsRegisterPairHigh());
668      } else {
669        __ addl(locations->InAt(0).AsX86().AsRegisterPairLow(),
670                Address(ESP, locations->InAt(1).GetStackIndex()));
671        __ adcl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
672                Address(ESP, locations->InAt(1).GetHighStackIndex(kX86WordSize)));
673      }
674      break;
675    }
676
677    case Primitive::kPrimBoolean:
678    case Primitive::kPrimByte:
679    case Primitive::kPrimChar:
680    case Primitive::kPrimShort:
681      LOG(FATAL) << "Unexpected add type " << add->GetResultType();
682      break;
683
684    default:
685      LOG(FATAL) << "Unimplemented add type " << add->GetResultType();
686  }
687}
688
689void LocationsBuilderX86::VisitSub(HSub* sub) {
690  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(sub);
691  switch (sub->GetResultType()) {
692    case Primitive::kPrimInt:
693    case Primitive::kPrimLong: {
694      locations->SetInAt(0, Location::RequiresRegister());
695      locations->SetInAt(1, Location::Any());
696      locations->SetOut(Location::SameAsFirstInput());
697      break;
698    }
699
700    case Primitive::kPrimBoolean:
701    case Primitive::kPrimByte:
702    case Primitive::kPrimChar:
703    case Primitive::kPrimShort:
704      LOG(FATAL) << "Unexpected sub type " << sub->GetResultType();
705      break;
706
707    default:
708      LOG(FATAL) << "Unimplemented sub type " << sub->GetResultType();
709  }
710  sub->SetLocations(locations);
711}
712
713void InstructionCodeGeneratorX86::VisitSub(HSub* sub) {
714  LocationSummary* locations = sub->GetLocations();
715  switch (sub->GetResultType()) {
716    case Primitive::kPrimInt: {
717      DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(),
718                locations->Out().AsX86().AsCpuRegister());
719      if (locations->InAt(1).IsRegister()) {
720        __ subl(locations->InAt(0).AsX86().AsCpuRegister(),
721                locations->InAt(1).AsX86().AsCpuRegister());
722      } else {
723        __ subl(locations->InAt(0).AsX86().AsCpuRegister(),
724                Address(ESP, locations->InAt(1).GetStackIndex()));
725      }
726      break;
727    }
728
729    case Primitive::kPrimLong: {
730      DCHECK_EQ(locations->InAt(0).AsX86().AsRegisterPair(),
731                locations->Out().AsX86().AsRegisterPair());
732      if (locations->InAt(1).IsRegister()) {
733        __ subl(locations->InAt(0).AsX86().AsRegisterPairLow(),
734                locations->InAt(1).AsX86().AsRegisterPairLow());
735        __ sbbl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
736                locations->InAt(1).AsX86().AsRegisterPairHigh());
737      } else {
738        __ subl(locations->InAt(0).AsX86().AsRegisterPairLow(),
739                Address(ESP, locations->InAt(1).GetStackIndex()));
740        __ sbbl(locations->InAt(0).AsX86().AsRegisterPairHigh(),
741                Address(ESP, locations->InAt(1).GetHighStackIndex(kX86WordSize)));
742      }
743      break;
744    }
745
746    case Primitive::kPrimBoolean:
747    case Primitive::kPrimByte:
748    case Primitive::kPrimChar:
749    case Primitive::kPrimShort:
750      LOG(FATAL) << "Unexpected sub type " << sub->GetResultType();
751      break;
752
753    default:
754      LOG(FATAL) << "Unimplemented sub type " << sub->GetResultType();
755  }
756}
757
758void LocationsBuilderX86::VisitNewInstance(HNewInstance* instruction) {
759  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
760  locations->SetOut(X86CpuLocation(EAX));
761  InvokeRuntimeCallingConvention calling_convention;
762  locations->AddTemp(X86CpuLocation(calling_convention.GetRegisterAt(0)));
763  locations->AddTemp(X86CpuLocation(calling_convention.GetRegisterAt(1)));
764  instruction->SetLocations(locations);
765}
766
767void InstructionCodeGeneratorX86::VisitNewInstance(HNewInstance* instruction) {
768  InvokeRuntimeCallingConvention calling_convention;
769  LoadCurrentMethod(calling_convention.GetRegisterAt(1));
770  __ movl(calling_convention.GetRegisterAt(0), Immediate(instruction->GetTypeIndex()));
771
772  __ fs()->call(
773      Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pAllocObjectWithAccessCheck)));
774
775  codegen_->RecordPcInfo(instruction->GetDexPc());
776}
777
778void LocationsBuilderX86::VisitParameterValue(HParameterValue* instruction) {
779  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
780  Location location = parameter_visitor_.GetNextLocation(instruction->GetType());
781  if (location.IsStackSlot()) {
782    location = Location::StackSlot(location.GetStackIndex() + codegen_->GetFrameSize());
783  } else if (location.IsDoubleStackSlot()) {
784    location = Location::DoubleStackSlot(location.GetStackIndex() + codegen_->GetFrameSize());
785  }
786  locations->SetOut(location);
787  instruction->SetLocations(locations);
788}
789
790void InstructionCodeGeneratorX86::VisitParameterValue(HParameterValue* instruction) {
791  // Nothing to do, the parameter is already at its location.
792}
793
794void LocationsBuilderX86::VisitNot(HNot* instruction) {
795  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
796  locations->SetInAt(0, Location::RequiresRegister());
797  locations->SetOut(Location::SameAsFirstInput());
798  instruction->SetLocations(locations);
799}
800
801void InstructionCodeGeneratorX86::VisitNot(HNot* instruction) {
802  LocationSummary* locations = instruction->GetLocations();
803  Location out = locations->Out();
804  DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(), out.AsX86().AsCpuRegister());
805  __ xorl(out.AsX86().AsCpuRegister(), Immediate(1));
806}
807
808void LocationsBuilderX86::VisitPhi(HPhi* instruction) {
809  LOG(FATAL) << "Unimplemented";
810}
811
812void InstructionCodeGeneratorX86::VisitPhi(HPhi* instruction) {
813  LOG(FATAL) << "Unimplemented";
814}
815
816}  // namespace x86
817}  // namespace art
818