| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "code_generator_x86.h" |
| #include "gc/accounting/card_table.h" |
| #include "utils/assembler.h" |
| #include "utils/stack_checks.h" |
| #include "utils/x86/assembler_x86.h" |
| #include "utils/x86/managed_register_x86.h" |
| |
| #include "entrypoints/quick/quick_entrypoints.h" |
| #include "mirror/array.h" |
| #include "mirror/art_method.h" |
| #include "thread.h" |
| |
| namespace art { |
| |
| x86::X86ManagedRegister Location::AsX86() const { |
| return reg().AsX86(); |
| } |
| |
| namespace x86 { |
| |
| static constexpr bool kExplicitStackOverflowCheck = false; |
| |
| static constexpr int kNumberOfPushedRegistersAtEntry = 1; |
| static constexpr int kCurrentMethodStackOffset = 0; |
| |
| static Location X86CpuLocation(Register reg) { |
| return Location::RegisterLocation(X86ManagedRegister::FromCpuRegister(reg)); |
| } |
| |
| static constexpr Register kRuntimeParameterCoreRegisters[] = { EAX, ECX, EDX }; |
| static constexpr size_t kRuntimeParameterCoreRegistersLength = |
| arraysize(kRuntimeParameterCoreRegisters); |
| |
| class InvokeRuntimeCallingConvention : public CallingConvention<Register> { |
| public: |
| InvokeRuntimeCallingConvention() |
| : CallingConvention(kRuntimeParameterCoreRegisters, |
| kRuntimeParameterCoreRegistersLength) {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention); |
| }; |
| |
| #define __ reinterpret_cast<X86Assembler*>(codegen->GetAssembler())-> |
| |
| class NullCheckSlowPathX86 : public SlowPathCode { |
| public: |
| explicit NullCheckSlowPathX86(uint32_t dex_pc) : dex_pc_(dex_pc) {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| __ Bind(GetEntryLabel()); |
| __ fs()->call(Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pThrowNullPointer))); |
| codegen->RecordPcInfo(dex_pc_); |
| } |
| |
| private: |
| const uint32_t dex_pc_; |
| DISALLOW_COPY_AND_ASSIGN(NullCheckSlowPathX86); |
| }; |
| |
| class StackOverflowCheckSlowPathX86 : public SlowPathCode { |
| public: |
| StackOverflowCheckSlowPathX86() {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| __ Bind(GetEntryLabel()); |
| __ addl(ESP, |
| Immediate(codegen->GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize)); |
| __ fs()->jmp(Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pThrowStackOverflow))); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(StackOverflowCheckSlowPathX86); |
| }; |
| |
| class BoundsCheckSlowPathX86 : public SlowPathCode { |
| public: |
| explicit BoundsCheckSlowPathX86(uint32_t dex_pc, |
| Location index_location, |
| Location length_location) |
| : dex_pc_(dex_pc), index_location_(index_location), length_location_(length_location) {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| CodeGeneratorX86* x86_codegen = reinterpret_cast<CodeGeneratorX86*>(codegen); |
| __ Bind(GetEntryLabel()); |
| InvokeRuntimeCallingConvention calling_convention; |
| x86_codegen->Move32(X86CpuLocation(calling_convention.GetRegisterAt(0)), index_location_); |
| x86_codegen->Move32(X86CpuLocation(calling_convention.GetRegisterAt(1)), length_location_); |
| __ fs()->call(Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pThrowArrayBounds))); |
| codegen->RecordPcInfo(dex_pc_); |
| } |
| |
| private: |
| const uint32_t dex_pc_; |
| const Location index_location_; |
| const Location length_location_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BoundsCheckSlowPathX86); |
| }; |
| |
| #undef __ |
| #define __ reinterpret_cast<X86Assembler*>(GetAssembler())-> |
| |
| inline Condition X86Condition(IfCondition cond) { |
| switch (cond) { |
| case kCondEQ: return kEqual; |
| case kCondNE: return kNotEqual; |
| case kCondLT: return kLess; |
| case kCondLE: return kLessEqual; |
| case kCondGT: return kGreater; |
| case kCondGE: return kGreaterEqual; |
| default: |
| LOG(FATAL) << "Unknown if condition"; |
| } |
| return kEqual; |
| } |
| |
| void CodeGeneratorX86::DumpCoreRegister(std::ostream& stream, int reg) const { |
| stream << X86ManagedRegister::FromCpuRegister(Register(reg)); |
| } |
| |
| void CodeGeneratorX86::DumpFloatingPointRegister(std::ostream& stream, int reg) const { |
| stream << X86ManagedRegister::FromXmmRegister(XmmRegister(reg)); |
| } |
| |
| CodeGeneratorX86::CodeGeneratorX86(HGraph* graph) |
| : CodeGenerator(graph, kNumberOfRegIds), |
| location_builder_(graph, this), |
| instruction_visitor_(graph, this), |
| move_resolver_(graph->GetArena(), this) {} |
| |
| size_t CodeGeneratorX86::FrameEntrySpillSize() const { |
| return kNumberOfPushedRegistersAtEntry * kX86WordSize; |
| } |
| |
| static bool* GetBlockedRegisterPairs(bool* blocked_registers) { |
| return blocked_registers + kNumberOfAllocIds; |
| } |
| |
| ManagedRegister CodeGeneratorX86::AllocateFreeRegister(Primitive::Type type, |
| bool* blocked_registers) const { |
| switch (type) { |
| case Primitive::kPrimLong: { |
| bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers); |
| size_t reg = AllocateFreeRegisterInternal(blocked_register_pairs, kNumberOfRegisterPairs); |
| X86ManagedRegister pair = |
| X86ManagedRegister::FromRegisterPair(static_cast<RegisterPair>(reg)); |
| blocked_registers[pair.AsRegisterPairLow()] = true; |
| blocked_registers[pair.AsRegisterPairHigh()] = true; |
| // Block all other register pairs that share a register with `pair`. |
| for (int i = 0; i < kNumberOfRegisterPairs; i++) { |
| X86ManagedRegister current = |
| X86ManagedRegister::FromRegisterPair(static_cast<RegisterPair>(i)); |
| if (current.AsRegisterPairLow() == pair.AsRegisterPairLow() |
| || current.AsRegisterPairLow() == pair.AsRegisterPairHigh() |
| || current.AsRegisterPairHigh() == pair.AsRegisterPairLow() |
| || current.AsRegisterPairHigh() == pair.AsRegisterPairHigh()) { |
| blocked_register_pairs[i] = true; |
| } |
| } |
| return pair; |
| } |
| |
| case Primitive::kPrimByte: |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| Register reg = static_cast<Register>( |
| AllocateFreeRegisterInternal(blocked_registers, kNumberOfCpuRegisters)); |
| // Block all register pairs that contain `reg`. |
| bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers); |
| for (int i = 0; i < kNumberOfRegisterPairs; i++) { |
| X86ManagedRegister current = |
| X86ManagedRegister::FromRegisterPair(static_cast<RegisterPair>(i)); |
| if (current.AsRegisterPairLow() == reg || current.AsRegisterPairHigh() == reg) { |
| blocked_register_pairs[i] = true; |
| } |
| } |
| return X86ManagedRegister::FromCpuRegister(reg); |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << type; |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| |
| return ManagedRegister::NoRegister(); |
| } |
| |
| void CodeGeneratorX86::SetupBlockedRegisters(bool* blocked_registers) const { |
| bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers); |
| |
| // Don't allocate the dalvik style register pair passing. |
| blocked_register_pairs[ECX_EDX] = true; |
| |
| // Stack register is always reserved. |
| blocked_registers[ESP] = true; |
| |
| // TODO: We currently don't use Quick's callee saved registers. |
| blocked_registers[EBP] = true; |
| blocked_registers[ESI] = true; |
| blocked_registers[EDI] = true; |
| blocked_register_pairs[EAX_EDI] = true; |
| blocked_register_pairs[EDX_EDI] = true; |
| blocked_register_pairs[ECX_EDI] = true; |
| blocked_register_pairs[EBX_EDI] = true; |
| } |
| |
| size_t CodeGeneratorX86::GetNumberOfRegisters() const { |
| return kNumberOfRegIds; |
| } |
| |
| InstructionCodeGeneratorX86::InstructionCodeGeneratorX86(HGraph* graph, CodeGeneratorX86* codegen) |
| : HGraphVisitor(graph), |
| assembler_(codegen->GetAssembler()), |
| codegen_(codegen) {} |
| |
| void CodeGeneratorX86::GenerateFrameEntry() { |
| // Create a fake register to mimic Quick. |
| static const int kFakeReturnRegister = 8; |
| core_spill_mask_ |= (1 << kFakeReturnRegister); |
| |
| bool skip_overflow_check = IsLeafMethod() && !FrameNeedsStackCheck(GetFrameSize(), InstructionSet::kX86); |
| if (!skip_overflow_check && !kExplicitStackOverflowCheck) { |
| __ testl(EAX, Address(ESP, -static_cast<int32_t>(GetStackOverflowReservedBytes(kX86)))); |
| RecordPcInfo(0); |
| } |
| |
| // The return PC has already been pushed on the stack. |
| __ subl(ESP, Immediate(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize)); |
| |
| if (!skip_overflow_check && kExplicitStackOverflowCheck) { |
| SlowPathCode* slow_path = new (GetGraph()->GetArena()) StackOverflowCheckSlowPathX86(); |
| AddSlowPath(slow_path); |
| |
| __ fs()->cmpl(ESP, Address::Absolute(Thread::StackEndOffset<kX86WordSize>())); |
| __ j(kLess, slow_path->GetEntryLabel()); |
| } |
| |
| __ movl(Address(ESP, kCurrentMethodStackOffset), EAX); |
| } |
| |
| void CodeGeneratorX86::GenerateFrameExit() { |
| __ addl(ESP, Immediate(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kX86WordSize)); |
| } |
| |
| void CodeGeneratorX86::Bind(Label* label) { |
| __ Bind(label); |
| } |
| |
| void InstructionCodeGeneratorX86::LoadCurrentMethod(Register reg) { |
| __ movl(reg, Address(ESP, kCurrentMethodStackOffset)); |
| } |
| |
| Location CodeGeneratorX86::GetStackLocation(HLoadLocal* load) const { |
| switch (load->GetType()) { |
| case Primitive::kPrimLong: |
| return Location::DoubleStackSlot(GetStackSlot(load->GetLocal())); |
| break; |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| return Location::StackSlot(GetStackSlot(load->GetLocal())); |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented type " << load->GetType(); |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unexpected type " << load->GetType(); |
| } |
| |
| LOG(FATAL) << "Unreachable"; |
| return Location(); |
| } |
| |
| Location InvokeDexCallingConventionVisitor::GetNextLocation(Primitive::Type type) { |
| switch (type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| uint32_t index = gp_index_++; |
| if (index < calling_convention.GetNumberOfRegisters()) { |
| return X86CpuLocation(calling_convention.GetRegisterAt(index)); |
| } else { |
| return Location::StackSlot(calling_convention.GetStackOffsetOf(index)); |
| } |
| } |
| |
| case Primitive::kPrimLong: { |
| uint32_t index = gp_index_; |
| gp_index_ += 2; |
| if (index + 1 < calling_convention.GetNumberOfRegisters()) { |
| return Location::RegisterLocation(X86ManagedRegister::FromRegisterPair( |
| calling_convention.GetRegisterPairAt(index))); |
| } else if (index + 1 == calling_convention.GetNumberOfRegisters()) { |
| return Location::QuickParameter(index); |
| } else { |
| return Location::DoubleStackSlot(calling_convention.GetStackOffsetOf(index)); |
| } |
| } |
| |
| case Primitive::kPrimDouble: |
| case Primitive::kPrimFloat: |
| LOG(FATAL) << "Unimplemented parameter type " << type; |
| break; |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unexpected parameter type " << type; |
| break; |
| } |
| return Location(); |
| } |
| |
| void CodeGeneratorX86::Move32(Location destination, Location source) { |
| if (source.Equals(destination)) { |
| return; |
| } |
| if (destination.IsRegister()) { |
| if (source.IsRegister()) { |
| __ movl(destination.AsX86().AsCpuRegister(), source.AsX86().AsCpuRegister()); |
| } else { |
| DCHECK(source.IsStackSlot()); |
| __ movl(destination.AsX86().AsCpuRegister(), Address(ESP, source.GetStackIndex())); |
| } |
| } else { |
| if (source.IsRegister()) { |
| __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsCpuRegister()); |
| } else { |
| DCHECK(source.IsStackSlot()); |
| __ pushl(Address(ESP, source.GetStackIndex())); |
| __ popl(Address(ESP, destination.GetStackIndex())); |
| } |
| } |
| } |
| |
| void CodeGeneratorX86::Move64(Location destination, Location source) { |
| if (source.Equals(destination)) { |
| return; |
| } |
| if (destination.IsRegister()) { |
| if (source.IsRegister()) { |
| __ movl(destination.AsX86().AsRegisterPairLow(), source.AsX86().AsRegisterPairLow()); |
| __ movl(destination.AsX86().AsRegisterPairHigh(), source.AsX86().AsRegisterPairHigh()); |
| } else if (source.IsQuickParameter()) { |
| uint32_t argument_index = source.GetQuickParameterIndex(); |
| InvokeDexCallingConvention calling_convention; |
| __ movl(destination.AsX86().AsRegisterPairLow(), |
| calling_convention.GetRegisterAt(argument_index)); |
| __ movl(destination.AsX86().AsRegisterPairHigh(), Address(ESP, |
| calling_convention.GetStackOffsetOf(argument_index + 1) + GetFrameSize())); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| __ movl(destination.AsX86().AsRegisterPairLow(), Address(ESP, source.GetStackIndex())); |
| __ movl(destination.AsX86().AsRegisterPairHigh(), |
| Address(ESP, source.GetHighStackIndex(kX86WordSize))); |
| } |
| } else if (destination.IsQuickParameter()) { |
| InvokeDexCallingConvention calling_convention; |
| uint32_t argument_index = destination.GetQuickParameterIndex(); |
| if (source.IsRegister()) { |
| __ movl(calling_convention.GetRegisterAt(argument_index), source.AsX86().AsRegisterPairLow()); |
| __ movl(Address(ESP, calling_convention.GetStackOffsetOf(argument_index + 1)), |
| source.AsX86().AsRegisterPairHigh()); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| __ movl(calling_convention.GetRegisterAt(argument_index), |
| Address(ESP, source.GetStackIndex())); |
| __ pushl(Address(ESP, source.GetHighStackIndex(kX86WordSize))); |
| __ popl(Address(ESP, calling_convention.GetStackOffsetOf(argument_index + 1))); |
| } |
| } else { |
| if (source.IsRegister()) { |
| __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsRegisterPairLow()); |
| __ movl(Address(ESP, destination.GetHighStackIndex(kX86WordSize)), |
| source.AsX86().AsRegisterPairHigh()); |
| } else if (source.IsQuickParameter()) { |
| InvokeDexCallingConvention calling_convention; |
| uint32_t argument_index = source.GetQuickParameterIndex(); |
| __ movl(Address(ESP, destination.GetStackIndex()), |
| calling_convention.GetRegisterAt(argument_index)); |
| __ pushl(Address(ESP, |
| calling_convention.GetStackOffsetOf(argument_index + 1) + GetFrameSize())); |
| __ popl(Address(ESP, destination.GetHighStackIndex(kX86WordSize))); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| __ pushl(Address(ESP, source.GetStackIndex())); |
| __ popl(Address(ESP, destination.GetStackIndex())); |
| __ pushl(Address(ESP, source.GetHighStackIndex(kX86WordSize))); |
| __ popl(Address(ESP, destination.GetHighStackIndex(kX86WordSize))); |
| } |
| } |
| } |
| |
| void CodeGeneratorX86::Move(HInstruction* instruction, Location location, HInstruction* move_for) { |
| if (instruction->AsIntConstant() != nullptr) { |
| Immediate imm(instruction->AsIntConstant()->GetValue()); |
| if (location.IsRegister()) { |
| __ movl(location.AsX86().AsCpuRegister(), imm); |
| } else { |
| __ movl(Address(ESP, location.GetStackIndex()), imm); |
| } |
| } else if (instruction->AsLongConstant() != nullptr) { |
| int64_t value = instruction->AsLongConstant()->GetValue(); |
| if (location.IsRegister()) { |
| __ movl(location.AsX86().AsRegisterPairLow(), Immediate(Low32Bits(value))); |
| __ movl(location.AsX86().AsRegisterPairHigh(), Immediate(High32Bits(value))); |
| } else { |
| __ movl(Address(ESP, location.GetStackIndex()), Immediate(Low32Bits(value))); |
| __ movl(Address(ESP, location.GetHighStackIndex(kX86WordSize)), Immediate(High32Bits(value))); |
| } |
| } else if (instruction->AsLoadLocal() != nullptr) { |
| switch (instruction->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| Move32(location, Location::StackSlot(GetStackSlot(instruction->AsLoadLocal()->GetLocal()))); |
| break; |
| |
| case Primitive::kPrimLong: |
| Move64(location, Location::DoubleStackSlot( |
| GetStackSlot(instruction->AsLoadLocal()->GetLocal()))); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented local type " << instruction->GetType(); |
| } |
| } else { |
| DCHECK((instruction->GetNext() == move_for) || instruction->GetNext()->IsTemporary()); |
| switch (instruction->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| Move32(location, instruction->GetLocations()->Out()); |
| break; |
| |
| case Primitive::kPrimLong: |
| Move64(location, instruction->GetLocations()->Out()); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented type " << instruction->GetType(); |
| } |
| } |
| } |
| |
| void LocationsBuilderX86::VisitGoto(HGoto* got) { |
| got->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitGoto(HGoto* got) { |
| HBasicBlock* successor = got->GetSuccessor(); |
| if (GetGraph()->GetExitBlock() == successor) { |
| codegen_->GenerateFrameExit(); |
| } else if (!codegen_->GoesToNextBlock(got->GetBlock(), successor)) { |
| __ jmp(codegen_->GetLabelOf(successor)); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitExit(HExit* exit) { |
| exit->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitExit(HExit* exit) { |
| if (kIsDebugBuild) { |
| __ Comment("Unreachable"); |
| __ int3(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitIf(HIf* if_instr) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(if_instr); |
| HInstruction* cond = if_instr->InputAt(0); |
| DCHECK(cond->IsCondition()); |
| HCondition* condition = cond->AsCondition(); |
| if (condition->NeedsMaterialization()) { |
| locations->SetInAt(0, Location::Any()); |
| } |
| if_instr->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitIf(HIf* if_instr) { |
| HInstruction* cond = if_instr->InputAt(0); |
| DCHECK(cond->IsCondition()); |
| HCondition* condition = cond->AsCondition(); |
| if (condition->NeedsMaterialization()) { |
| // Materialized condition, compare against 0 |
| Location lhs = if_instr->GetLocations()->InAt(0); |
| if (lhs.IsRegister()) { |
| __ cmpl(lhs.AsX86().AsCpuRegister(), Immediate(0)); |
| } else { |
| __ cmpl(Address(ESP, lhs.GetStackIndex()), Immediate(0)); |
| } |
| __ j(kEqual, codegen_->GetLabelOf(if_instr->IfTrueSuccessor())); |
| } else { |
| Location lhs = condition->GetLocations()->InAt(0); |
| Location rhs = condition->GetLocations()->InAt(1); |
| // LHS is guaranteed to be in a register (see LocationsBuilderX86::VisitCondition). |
| if (rhs.IsRegister()) { |
| __ cmpl(lhs.AsX86().AsCpuRegister(), rhs.AsX86().AsCpuRegister()); |
| } else if (rhs.IsConstant()) { |
| HIntConstant* instruction = rhs.GetConstant()->AsIntConstant(); |
| Immediate imm(instruction->AsIntConstant()->GetValue()); |
| __ cmpl(lhs.AsX86().AsCpuRegister(), imm); |
| } else { |
| __ cmpl(lhs.AsX86().AsCpuRegister(), Address(ESP, rhs.GetStackIndex())); |
| } |
| __ j(X86Condition(condition->GetCondition()), |
| codegen_->GetLabelOf(if_instr->IfTrueSuccessor())); |
| } |
| if (!codegen_->GoesToNextBlock(if_instr->GetBlock(), if_instr->IfFalseSuccessor())) { |
| __ jmp(codegen_->GetLabelOf(if_instr->IfFalseSuccessor())); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitLocal(HLocal* local) { |
| local->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitLocal(HLocal* local) { |
| DCHECK_EQ(local->GetBlock(), GetGraph()->GetEntryBlock()); |
| } |
| |
| void LocationsBuilderX86::VisitLoadLocal(HLoadLocal* local) { |
| local->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitLoadLocal(HLoadLocal* load) { |
| // Nothing to do, this is driven by the code generator. |
| } |
| |
| void LocationsBuilderX86::VisitStoreLocal(HStoreLocal* store) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(store); |
| switch (store->InputAt(1)->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| locations->SetInAt(1, Location::StackSlot(codegen_->GetStackSlot(store->GetLocal()))); |
| break; |
| |
| case Primitive::kPrimLong: |
| locations->SetInAt(1, Location::DoubleStackSlot(codegen_->GetStackSlot(store->GetLocal()))); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented local type " << store->InputAt(1)->GetType(); |
| } |
| store->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitStoreLocal(HStoreLocal* store) { |
| } |
| |
| void LocationsBuilderX86::VisitCondition(HCondition* comp) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(comp); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::Any()); |
| if (comp->NeedsMaterialization()) { |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| comp->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitCondition(HCondition* comp) { |
| if (comp->NeedsMaterialization()) { |
| LocationSummary* locations = comp->GetLocations(); |
| if (locations->InAt(1).IsRegister()) { |
| __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(), |
| locations->InAt(1).AsX86().AsCpuRegister()); |
| } else if (locations->InAt(1).IsConstant()) { |
| HConstant* instruction = locations->InAt(1).GetConstant(); |
| Immediate imm(instruction->AsIntConstant()->GetValue()); |
| __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(), imm); |
| } else { |
| __ cmpl(locations->InAt(0).AsX86().AsCpuRegister(), |
| Address(ESP, locations->InAt(1).GetStackIndex())); |
| } |
| __ setb(X86Condition(comp->GetCondition()), locations->Out().AsX86().AsCpuRegister()); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitEqual(HEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitEqual(HEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderX86::VisitNotEqual(HNotEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitNotEqual(HNotEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderX86::VisitLessThan(HLessThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitLessThan(HLessThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderX86::VisitLessThanOrEqual(HLessThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitLessThanOrEqual(HLessThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderX86::VisitGreaterThan(HGreaterThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitGreaterThan(HGreaterThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderX86::VisitGreaterThanOrEqual(HGreaterThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitGreaterThanOrEqual(HGreaterThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderX86::VisitIntConstant(HIntConstant* constant) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| constant->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitIntConstant(HIntConstant* constant) { |
| } |
| |
| void LocationsBuilderX86::VisitLongConstant(HLongConstant* constant) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| constant->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitLongConstant(HLongConstant* constant) { |
| // Will be generated at use site. |
| } |
| |
| void LocationsBuilderX86::VisitReturnVoid(HReturnVoid* ret) { |
| ret->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitReturnVoid(HReturnVoid* ret) { |
| codegen_->GenerateFrameExit(); |
| __ ret(); |
| } |
| |
| void LocationsBuilderX86::VisitReturn(HReturn* ret) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(ret); |
| switch (ret->InputAt(0)->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| locations->SetInAt(0, X86CpuLocation(EAX)); |
| break; |
| |
| case Primitive::kPrimLong: |
| locations->SetInAt( |
| 0, Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(EAX_EDX))); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType(); |
| } |
| ret->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitReturn(HReturn* ret) { |
| if (kIsDebugBuild) { |
| switch (ret->InputAt(0)->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| DCHECK_EQ(ret->GetLocations()->InAt(0).AsX86().AsCpuRegister(), EAX); |
| break; |
| |
| case Primitive::kPrimLong: |
| DCHECK_EQ(ret->GetLocations()->InAt(0).AsX86().AsRegisterPair(), EAX_EDX); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType(); |
| } |
| } |
| codegen_->GenerateFrameExit(); |
| __ ret(); |
| } |
| |
| void LocationsBuilderX86::VisitInvokeStatic(HInvokeStatic* invoke) { |
| codegen_->MarkNotLeaf(); |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(invoke); |
| locations->AddTemp(X86CpuLocation(EAX)); |
| |
| InvokeDexCallingConventionVisitor calling_convention_visitor; |
| for (size_t i = 0; i < invoke->InputCount(); i++) { |
| HInstruction* input = invoke->InputAt(i); |
| locations->SetInAt(i, calling_convention_visitor.GetNextLocation(input->GetType())); |
| } |
| |
| switch (invoke->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| locations->SetOut(X86CpuLocation(EAX)); |
| break; |
| |
| case Primitive::kPrimLong: |
| locations->SetOut(Location::RegisterLocation(X86ManagedRegister::FromRegisterPair(EAX_EDX))); |
| break; |
| |
| case Primitive::kPrimVoid: |
| break; |
| |
| case Primitive::kPrimDouble: |
| case Primitive::kPrimFloat: |
| LOG(FATAL) << "Unimplemented return type " << invoke->GetType(); |
| break; |
| } |
| |
| invoke->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitInvokeStatic(HInvokeStatic* invoke) { |
| Register temp = invoke->GetLocations()->GetTemp(0).AsX86().AsCpuRegister(); |
| uint32_t heap_reference_size = sizeof(mirror::HeapReference<mirror::Object>); |
| size_t index_in_cache = mirror::Array::DataOffset(heap_reference_size).Int32Value() + |
| invoke->GetIndexInDexCache() * kX86WordSize; |
| |
| // TODO: Implement all kinds of calls: |
| // 1) boot -> boot |
| // 2) app -> boot |
| // 3) app -> app |
| // |
| // Currently we implement the app -> app logic, which looks up in the resolve cache. |
| |
| // temp = method; |
| LoadCurrentMethod(temp); |
| // temp = temp->dex_cache_resolved_methods_; |
| __ movl(temp, Address(temp, mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value())); |
| // temp = temp[index_in_cache] |
| __ movl(temp, Address(temp, index_in_cache)); |
| // (temp + offset_of_quick_compiled_code)() |
| __ call(Address(temp, mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset().Int32Value())); |
| |
| DCHECK(!codegen_->IsLeafMethod()); |
| codegen_->RecordPcInfo(invoke->GetDexPc()); |
| } |
| |
| void LocationsBuilderX86::VisitAdd(HAdd* add) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(add); |
| switch (add->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::Any()); |
| locations->SetOut(Location::SameAsFirstInput()); |
| break; |
| } |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| LOG(FATAL) << "Unexpected add type " << add->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented add type " << add->GetResultType(); |
| } |
| add->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitAdd(HAdd* add) { |
| LocationSummary* locations = add->GetLocations(); |
| switch (add->GetResultType()) { |
| case Primitive::kPrimInt: { |
| DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(), |
| locations->Out().AsX86().AsCpuRegister()); |
| if (locations->InAt(1).IsRegister()) { |
| __ addl(locations->InAt(0).AsX86().AsCpuRegister(), |
| locations->InAt(1).AsX86().AsCpuRegister()); |
| } else if (locations->InAt(1).IsConstant()) { |
| HConstant* instruction = locations->InAt(1).GetConstant(); |
| Immediate imm(instruction->AsIntConstant()->GetValue()); |
| __ addl(locations->InAt(0).AsX86().AsCpuRegister(), imm); |
| } else { |
| __ addl(locations->InAt(0).AsX86().AsCpuRegister(), |
| Address(ESP, locations->InAt(1).GetStackIndex())); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| DCHECK_EQ(locations->InAt(0).AsX86().AsRegisterPair(), |
| locations->Out().AsX86().AsRegisterPair()); |
| if (locations->InAt(1).IsRegister()) { |
| __ addl(locations->InAt(0).AsX86().AsRegisterPairLow(), |
| locations->InAt(1).AsX86().AsRegisterPairLow()); |
| __ adcl(locations->InAt(0).AsX86().AsRegisterPairHigh(), |
| locations->InAt(1).AsX86().AsRegisterPairHigh()); |
| } else { |
| __ addl(locations->InAt(0).AsX86().AsRegisterPairLow(), |
| Address(ESP, locations->InAt(1).GetStackIndex())); |
| __ adcl(locations->InAt(0).AsX86().AsRegisterPairHigh(), |
| Address(ESP, locations->InAt(1).GetHighStackIndex(kX86WordSize))); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| LOG(FATAL) << "Unexpected add type " << add->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented add type " << add->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitSub(HSub* sub) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(sub); |
| switch (sub->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::Any()); |
| locations->SetOut(Location::SameAsFirstInput()); |
| break; |
| } |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| LOG(FATAL) << "Unexpected sub type " << sub->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented sub type " << sub->GetResultType(); |
| } |
| sub->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitSub(HSub* sub) { |
| LocationSummary* locations = sub->GetLocations(); |
| switch (sub->GetResultType()) { |
| case Primitive::kPrimInt: { |
| DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(), |
| locations->Out().AsX86().AsCpuRegister()); |
| if (locations->InAt(1).IsRegister()) { |
| __ subl(locations->InAt(0).AsX86().AsCpuRegister(), |
| locations->InAt(1).AsX86().AsCpuRegister()); |
| } else if (locations->InAt(1).IsConstant()) { |
| HConstant* instruction = locations->InAt(1).GetConstant(); |
| Immediate imm(instruction->AsIntConstant()->GetValue()); |
| __ subl(locations->InAt(0).AsX86().AsCpuRegister(), imm); |
| } else { |
| __ subl(locations->InAt(0).AsX86().AsCpuRegister(), |
| Address(ESP, locations->InAt(1).GetStackIndex())); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| DCHECK_EQ(locations->InAt(0).AsX86().AsRegisterPair(), |
| locations->Out().AsX86().AsRegisterPair()); |
| if (locations->InAt(1).IsRegister()) { |
| __ subl(locations->InAt(0).AsX86().AsRegisterPairLow(), |
| locations->InAt(1).AsX86().AsRegisterPairLow()); |
| __ sbbl(locations->InAt(0).AsX86().AsRegisterPairHigh(), |
| locations->InAt(1).AsX86().AsRegisterPairHigh()); |
| } else { |
| __ subl(locations->InAt(0).AsX86().AsRegisterPairLow(), |
| Address(ESP, locations->InAt(1).GetStackIndex())); |
| __ sbbl(locations->InAt(0).AsX86().AsRegisterPairHigh(), |
| Address(ESP, locations->InAt(1).GetHighStackIndex(kX86WordSize))); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| LOG(FATAL) << "Unexpected sub type " << sub->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented sub type " << sub->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitNewInstance(HNewInstance* instruction) { |
| codegen_->MarkNotLeaf(); |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetOut(X86CpuLocation(EAX)); |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->AddTemp(X86CpuLocation(calling_convention.GetRegisterAt(0))); |
| locations->AddTemp(X86CpuLocation(calling_convention.GetRegisterAt(1))); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitNewInstance(HNewInstance* instruction) { |
| InvokeRuntimeCallingConvention calling_convention; |
| LoadCurrentMethod(calling_convention.GetRegisterAt(1)); |
| __ movl(calling_convention.GetRegisterAt(0), Immediate(instruction->GetTypeIndex())); |
| |
| __ fs()->call( |
| Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pAllocObjectWithAccessCheck))); |
| |
| codegen_->RecordPcInfo(instruction->GetDexPc()); |
| DCHECK(!codegen_->IsLeafMethod()); |
| } |
| |
| void LocationsBuilderX86::VisitParameterValue(HParameterValue* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| Location location = parameter_visitor_.GetNextLocation(instruction->GetType()); |
| if (location.IsStackSlot()) { |
| location = Location::StackSlot(location.GetStackIndex() + codegen_->GetFrameSize()); |
| } else if (location.IsDoubleStackSlot()) { |
| location = Location::DoubleStackSlot(location.GetStackIndex() + codegen_->GetFrameSize()); |
| } |
| locations->SetOut(location); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitParameterValue(HParameterValue* instruction) { |
| } |
| |
| void LocationsBuilderX86::VisitNot(HNot* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::SameAsFirstInput()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitNot(HNot* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Location out = locations->Out(); |
| DCHECK_EQ(locations->InAt(0).AsX86().AsCpuRegister(), out.AsX86().AsCpuRegister()); |
| __ xorl(out.AsX86().AsCpuRegister(), Immediate(1)); |
| } |
| |
| void LocationsBuilderX86::VisitCompare(HCompare* compare) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(compare); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::Any()); |
| locations->SetOut(Location::RequiresRegister()); |
| compare->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitCompare(HCompare* compare) { |
| Label greater, done; |
| LocationSummary* locations = compare->GetLocations(); |
| switch (compare->InputAt(0)->GetType()) { |
| case Primitive::kPrimLong: { |
| Label less, greater, done; |
| Register output = locations->Out().AsX86().AsCpuRegister(); |
| X86ManagedRegister left = locations->InAt(0).AsX86(); |
| Location right = locations->InAt(1); |
| if (right.IsRegister()) { |
| __ cmpl(left.AsRegisterPairHigh(), right.AsX86().AsRegisterPairHigh()); |
| } else { |
| DCHECK(right.IsDoubleStackSlot()); |
| __ cmpl(left.AsRegisterPairHigh(), Address(ESP, right.GetHighStackIndex(kX86WordSize))); |
| } |
| __ j(kLess, &less); // Signed compare. |
| __ j(kGreater, &greater); // Signed compare. |
| if (right.IsRegister()) { |
| __ cmpl(left.AsRegisterPairLow(), right.AsX86().AsRegisterPairLow()); |
| } else { |
| DCHECK(right.IsDoubleStackSlot()); |
| __ cmpl(left.AsRegisterPairLow(), Address(ESP, right.GetStackIndex())); |
| } |
| __ movl(output, Immediate(0)); |
| __ j(kEqual, &done); |
| __ j(kBelow, &less); // Unsigned compare. |
| |
| __ Bind(&greater); |
| __ movl(output, Immediate(1)); |
| __ jmp(&done); |
| |
| __ Bind(&less); |
| __ movl(output, Immediate(-1)); |
| |
| __ Bind(&done); |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unimplemented compare type " << compare->InputAt(0)->GetType(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitPhi(HPhi* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| for (size_t i = 0, e = instruction->InputCount(); i < e; ++i) { |
| locations->SetInAt(i, Location::Any()); |
| } |
| locations->SetOut(Location::Any()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitPhi(HPhi* instruction) { |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void LocationsBuilderX86::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| Primitive::Type field_type = instruction->InputAt(1)->GetType(); |
| if (field_type == Primitive::kPrimBoolean || field_type == Primitive::kPrimByte) { |
| // Ensure the value is in a byte register. |
| locations->SetInAt(1, X86CpuLocation(EAX)); |
| } else { |
| locations->SetInAt(1, Location::RequiresRegister()); |
| } |
| // Temporary registers for the write barrier. |
| if (field_type == Primitive::kPrimNot) { |
| locations->AddTemp(Location::RequiresRegister()); |
| // Ensure the card is in a byte register. |
| locations->AddTemp(X86CpuLocation(ECX)); |
| } |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsX86().AsCpuRegister(); |
| uint32_t offset = instruction->GetFieldOffset().Uint32Value(); |
| Primitive::Type field_type = instruction->InputAt(1)->GetType(); |
| |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: { |
| ByteRegister value = locations->InAt(1).AsX86().AsByteRegister(); |
| __ movb(Address(obj, offset), value); |
| break; |
| } |
| |
| case Primitive::kPrimShort: |
| case Primitive::kPrimChar: { |
| Register value = locations->InAt(1).AsX86().AsCpuRegister(); |
| __ movw(Address(obj, offset), value); |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| Register value = locations->InAt(1).AsX86().AsCpuRegister(); |
| __ movl(Address(obj, offset), value); |
| |
| if (field_type == Primitive::kPrimNot) { |
| Register temp = locations->GetTemp(0).AsX86().AsCpuRegister(); |
| Register card = locations->GetTemp(1).AsX86().AsCpuRegister(); |
| codegen_->MarkGCCard(temp, card, obj, value); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| X86ManagedRegister value = locations->InAt(1).AsX86(); |
| __ movl(Address(obj, offset), value.AsRegisterPairLow()); |
| __ movl(Address(obj, kX86WordSize + offset), value.AsRegisterPairHigh()); |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << field_type; |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << field_type; |
| } |
| } |
| |
| void CodeGeneratorX86::MarkGCCard(Register temp, Register card, Register object, Register value) { |
| Label is_null; |
| __ testl(value, value); |
| __ j(kEqual, &is_null); |
| __ fs()->movl(card, Address::Absolute(Thread::CardTableOffset<kX86WordSize>().Int32Value())); |
| __ movl(temp, object); |
| __ shrl(temp, Immediate(gc::accounting::CardTable::kCardShift)); |
| __ movb(Address(temp, card, TIMES_1, 0), |
| X86ManagedRegister::FromCpuRegister(card).AsByteRegister()); |
| __ Bind(&is_null); |
| } |
| |
| void LocationsBuilderX86::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsX86().AsCpuRegister(); |
| uint32_t offset = instruction->GetFieldOffset().Uint32Value(); |
| |
| switch (instruction->GetType()) { |
| case Primitive::kPrimBoolean: { |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| __ movzxb(out, Address(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimByte: { |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| __ movsxb(out, Address(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimShort: { |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| __ movsxw(out, Address(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimChar: { |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| __ movzxw(out, Address(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| __ movl(out, Address(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| // TODO: support volatile. |
| X86ManagedRegister out = locations->Out().AsX86(); |
| __ movl(out.AsRegisterPairLow(), Address(obj, offset)); |
| __ movl(out.AsRegisterPairHigh(), Address(obj, kX86WordSize + offset)); |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << instruction->GetType(); |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << instruction->GetType(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitNullCheck(HNullCheck* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::Any()); |
| // TODO: Have a normalization phase that makes this instruction never used. |
| locations->SetOut(Location::SameAsFirstInput()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitNullCheck(HNullCheck* instruction) { |
| SlowPathCode* slow_path = |
| new (GetGraph()->GetArena()) NullCheckSlowPathX86(instruction->GetDexPc()); |
| codegen_->AddSlowPath(slow_path); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location obj = locations->InAt(0); |
| DCHECK(obj.Equals(locations->Out())); |
| |
| if (obj.IsRegister()) { |
| __ cmpl(obj.AsX86().AsCpuRegister(), Immediate(0)); |
| } else { |
| DCHECK(locations->InAt(0).IsStackSlot()); |
| __ cmpl(Address(ESP, obj.GetStackIndex()), Immediate(0)); |
| } |
| __ j(kEqual, slow_path->GetEntryLabel()); |
| } |
| |
| void LocationsBuilderX86::VisitArrayGet(HArrayGet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| locations->SetOut(Location::RequiresRegister()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitArrayGet(HArrayGet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsX86().AsCpuRegister(); |
| Location index = locations->InAt(1); |
| |
| switch (instruction->GetType()) { |
| case Primitive::kPrimBoolean: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint8_t)).Uint32Value(); |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| __ movzxb(out, Address(obj, |
| (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset)); |
| } else { |
| __ movzxb(out, Address(obj, index.AsX86().AsCpuRegister(), TIMES_1, data_offset)); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimByte: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int8_t)).Uint32Value(); |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| __ movsxb(out, Address(obj, |
| (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset)); |
| } else { |
| __ movsxb(out, Address(obj, index.AsX86().AsCpuRegister(), TIMES_1, data_offset)); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimShort: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int16_t)).Uint32Value(); |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| __ movsxw(out, Address(obj, |
| (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset)); |
| } else { |
| __ movsxw(out, Address(obj, index.AsX86().AsCpuRegister(), TIMES_2, data_offset)); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimChar: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint16_t)).Uint32Value(); |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| __ movzxw(out, Address(obj, |
| (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset)); |
| } else { |
| __ movzxw(out, Address(obj, index.AsX86().AsCpuRegister(), TIMES_2, data_offset)); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int32_t)).Uint32Value(); |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| __ movl(out, Address(obj, |
| (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4) + data_offset)); |
| } else { |
| __ movl(out, Address(obj, index.AsX86().AsCpuRegister(), TIMES_4, data_offset)); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int64_t)).Uint32Value(); |
| X86ManagedRegister out = locations->Out().AsX86(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8) + data_offset; |
| __ movl(out.AsRegisterPairLow(), Address(obj, offset)); |
| __ movl(out.AsRegisterPairHigh(), Address(obj, offset + kX86WordSize)); |
| } else { |
| __ movl(out.AsRegisterPairLow(), |
| Address(obj, index.AsX86().AsCpuRegister(), TIMES_8, data_offset)); |
| __ movl(out.AsRegisterPairHigh(), |
| Address(obj, index.AsX86().AsCpuRegister(), TIMES_8, data_offset + kX86WordSize)); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << instruction->GetType(); |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << instruction->GetType(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitArraySet(HArraySet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| Primitive::Type value_type = instruction->InputAt(2)->GetType(); |
| if (value_type == Primitive::kPrimNot) { |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->SetInAt(0, X86CpuLocation(calling_convention.GetRegisterAt(0))); |
| locations->SetInAt(1, X86CpuLocation(calling_convention.GetRegisterAt(1))); |
| locations->SetInAt(2, X86CpuLocation(calling_convention.GetRegisterAt(2))); |
| codegen_->MarkNotLeaf(); |
| } else { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| if (value_type == Primitive::kPrimBoolean || value_type == Primitive::kPrimByte) { |
| // Ensure the value is in a byte register. |
| locations->SetInAt(2, X86CpuLocation(EAX)); |
| } else { |
| locations->SetInAt(2, Location::RequiresRegister()); |
| } |
| } |
| |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitArraySet(HArraySet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsX86().AsCpuRegister(); |
| Location index = locations->InAt(1); |
| Primitive::Type value_type = instruction->InputAt(2)->GetType(); |
| |
| switch (value_type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint8_t)).Uint32Value(); |
| ByteRegister value = locations->InAt(2).AsX86().AsByteRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset; |
| __ movb(Address(obj, offset), value); |
| } else { |
| __ movb(Address(obj, index.AsX86().AsCpuRegister(), TIMES_1, data_offset), value); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimShort: |
| case Primitive::kPrimChar: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint16_t)).Uint32Value(); |
| Register value = locations->InAt(2).AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset; |
| __ movw(Address(obj, offset), value); |
| } else { |
| __ movw(Address(obj, index.AsX86().AsCpuRegister(), TIMES_2, data_offset), value); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimInt: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int32_t)).Uint32Value(); |
| Register value = locations->InAt(2).AsX86().AsCpuRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4) + data_offset; |
| __ movl(Address(obj, offset), value); |
| } else { |
| __ movl(Address(obj, index.AsX86().AsCpuRegister(), TIMES_4, data_offset), value); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimNot: { |
| DCHECK(!codegen_->IsLeafMethod()); |
| __ fs()->call(Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kX86WordSize, pAputObject))); |
| codegen_->RecordPcInfo(instruction->GetDexPc()); |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int64_t)).Uint32Value(); |
| X86ManagedRegister value = locations->InAt(2).AsX86(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8) + data_offset; |
| __ movl(Address(obj, offset), value.AsRegisterPairLow()); |
| __ movl(Address(obj, offset + kX86WordSize), value.AsRegisterPairHigh()); |
| } else { |
| __ movl(Address(obj, index.AsX86().AsCpuRegister(), TIMES_8, data_offset), |
| value.AsRegisterPairLow()); |
| __ movl(Address(obj, index.AsX86().AsCpuRegister(), TIMES_8, data_offset + kX86WordSize), |
| value.AsRegisterPairHigh()); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << instruction->GetType(); |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << instruction->GetType(); |
| } |
| } |
| |
| void LocationsBuilderX86::VisitArrayLength(HArrayLength* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitArrayLength(HArrayLength* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| uint32_t offset = mirror::Array::LengthOffset().Uint32Value(); |
| Register obj = locations->InAt(0).AsX86().AsCpuRegister(); |
| Register out = locations->Out().AsX86().AsCpuRegister(); |
| __ movl(out, Address(obj, offset)); |
| } |
| |
| void LocationsBuilderX86::VisitBoundsCheck(HBoundsCheck* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| // TODO: Have a normalization phase that makes this instruction never used. |
| locations->SetOut(Location::SameAsFirstInput()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitBoundsCheck(HBoundsCheck* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| SlowPathCode* slow_path = new (GetGraph()->GetArena()) BoundsCheckSlowPathX86( |
| instruction->GetDexPc(), locations->InAt(0), locations->InAt(1)); |
| codegen_->AddSlowPath(slow_path); |
| |
| Register index = locations->InAt(0).AsX86().AsCpuRegister(); |
| Register length = locations->InAt(1).AsX86().AsCpuRegister(); |
| |
| __ cmpl(index, length); |
| __ j(kAboveEqual, slow_path->GetEntryLabel()); |
| } |
| |
| void LocationsBuilderX86::VisitTemporary(HTemporary* temp) { |
| temp->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorX86::VisitTemporary(HTemporary* temp) { |
| // Nothing to do, this is driven by the code generator. |
| } |
| |
| void LocationsBuilderX86::VisitParallelMove(HParallelMove* instruction) { |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void InstructionCodeGeneratorX86::VisitParallelMove(HParallelMove* instruction) { |
| codegen_->GetMoveResolver()->EmitNativeCode(instruction); |
| } |
| |
| X86Assembler* ParallelMoveResolverX86::GetAssembler() const { |
| return codegen_->GetAssembler(); |
| } |
| |
| void ParallelMoveResolverX86::MoveMemoryToMemory(int dst, int src) { |
| ScratchRegisterScope ensure_scratch( |
| this, kNoRegister, EAX, codegen_->GetNumberOfCoreRegisters()); |
| int stack_offset = ensure_scratch.IsSpilled() ? kX86WordSize : 0; |
| __ movl(static_cast<Register>(ensure_scratch.GetRegister()), Address(ESP, src + stack_offset)); |
| __ movl(Address(ESP, dst + stack_offset), static_cast<Register>(ensure_scratch.GetRegister())); |
| } |
| |
| void ParallelMoveResolverX86::EmitMove(size_t index) { |
| MoveOperands* move = moves_.Get(index); |
| Location source = move->GetSource(); |
| Location destination = move->GetDestination(); |
| |
| if (source.IsRegister()) { |
| if (destination.IsRegister()) { |
| __ movl(destination.AsX86().AsCpuRegister(), source.AsX86().AsCpuRegister()); |
| } else { |
| DCHECK(destination.IsStackSlot()); |
| __ movl(Address(ESP, destination.GetStackIndex()), source.AsX86().AsCpuRegister()); |
| } |
| } else if (source.IsStackSlot()) { |
| if (destination.IsRegister()) { |
| __ movl(destination.AsX86().AsCpuRegister(), Address(ESP, source.GetStackIndex())); |
| } else { |
| DCHECK(destination.IsStackSlot()); |
| MoveMemoryToMemory(destination.GetStackIndex(), |
| source.GetStackIndex()); |
| } |
| } else if (source.IsConstant()) { |
| HIntConstant* instruction = source.GetConstant()->AsIntConstant(); |
| Immediate imm(instruction->AsIntConstant()->GetValue()); |
| if (destination.IsRegister()) { |
| __ movl(destination.AsX86().AsCpuRegister(), imm); |
| } else { |
| __ movl(Address(ESP, destination.GetStackIndex()), imm); |
| } |
| } else { |
| LOG(FATAL) << "Unimplemented"; |
| } |
| } |
| |
| void ParallelMoveResolverX86::Exchange(Register reg, int mem) { |
| Register suggested_scratch = reg == EAX ? EBX : EAX; |
| ScratchRegisterScope ensure_scratch( |
| this, reg, suggested_scratch, codegen_->GetNumberOfCoreRegisters()); |
| |
| int stack_offset = ensure_scratch.IsSpilled() ? kX86WordSize : 0; |
| __ movl(static_cast<Register>(ensure_scratch.GetRegister()), Address(ESP, mem + stack_offset)); |
| __ movl(Address(ESP, mem + stack_offset), reg); |
| __ movl(reg, static_cast<Register>(ensure_scratch.GetRegister())); |
| } |
| |
| void ParallelMoveResolverX86::Exchange(int mem1, int mem2) { |
| ScratchRegisterScope ensure_scratch1( |
| this, kNoRegister, EAX, codegen_->GetNumberOfCoreRegisters()); |
| |
| Register suggested_scratch = ensure_scratch1.GetRegister() == EAX ? EBX : EAX; |
| ScratchRegisterScope ensure_scratch2( |
| this, ensure_scratch1.GetRegister(), suggested_scratch, codegen_->GetNumberOfCoreRegisters()); |
| |
| int stack_offset = ensure_scratch1.IsSpilled() ? kX86WordSize : 0; |
| stack_offset += ensure_scratch2.IsSpilled() ? kX86WordSize : 0; |
| __ movl(static_cast<Register>(ensure_scratch1.GetRegister()), Address(ESP, mem1 + stack_offset)); |
| __ movl(static_cast<Register>(ensure_scratch2.GetRegister()), Address(ESP, mem2 + stack_offset)); |
| __ movl(Address(ESP, mem2 + stack_offset), static_cast<Register>(ensure_scratch1.GetRegister())); |
| __ movl(Address(ESP, mem1 + stack_offset), static_cast<Register>(ensure_scratch2.GetRegister())); |
| } |
| |
| void ParallelMoveResolverX86::EmitSwap(size_t index) { |
| MoveOperands* move = moves_.Get(index); |
| Location source = move->GetSource(); |
| Location destination = move->GetDestination(); |
| |
| if (source.IsRegister() && destination.IsRegister()) { |
| __ xchgl(destination.AsX86().AsCpuRegister(), source.AsX86().AsCpuRegister()); |
| } else if (source.IsRegister() && destination.IsStackSlot()) { |
| Exchange(source.AsX86().AsCpuRegister(), destination.GetStackIndex()); |
| } else if (source.IsStackSlot() && destination.IsRegister()) { |
| Exchange(destination.AsX86().AsCpuRegister(), source.GetStackIndex()); |
| } else if (source.IsStackSlot() && destination.IsStackSlot()) { |
| Exchange(destination.GetStackIndex(), source.GetStackIndex()); |
| } else { |
| LOG(FATAL) << "Unimplemented"; |
| } |
| } |
| |
| void ParallelMoveResolverX86::SpillScratch(int reg) { |
| __ pushl(static_cast<Register>(reg)); |
| } |
| |
| void ParallelMoveResolverX86::RestoreScratch(int reg) { |
| __ popl(static_cast<Register>(reg)); |
| } |
| |
| } // namespace x86 |
| } // namespace art |
