| /* |
| * 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_arm.h" |
| #include "utils/assembler.h" |
| #include "utils/arm/assembler_arm.h" |
| #include "utils/arm/managed_register_arm.h" |
| |
| #include "entrypoints/quick/quick_entrypoints.h" |
| #include "mirror/array.h" |
| #include "mirror/art_method.h" |
| #include "thread.h" |
| |
| #define __ reinterpret_cast<ArmAssembler*>(GetAssembler())-> |
| |
| namespace art { |
| |
| arm::ArmManagedRegister Location::AsArm() const { |
| return reg().AsArm(); |
| } |
| |
| namespace arm { |
| |
| static constexpr int kNumberOfPushedRegistersAtEntry = 1; |
| static constexpr int kCurrentMethodStackOffset = 0; |
| |
| CodeGeneratorARM::CodeGeneratorARM(HGraph* graph) |
| : CodeGenerator(graph, kNumberOfRegIds), |
| location_builder_(graph, this), |
| instruction_visitor_(graph, this) {} |
| |
| static bool* GetBlockedRegisterPairs(bool* blocked_registers) { |
| return blocked_registers + kNumberOfAllocIds; |
| } |
| |
| ManagedRegister CodeGeneratorARM::AllocateFreeRegister(Primitive::Type type, |
| bool* blocked_registers) const { |
| switch (type) { |
| case Primitive::kPrimLong: { |
| size_t reg = AllocateFreeRegisterInternal( |
| GetBlockedRegisterPairs(blocked_registers), kNumberOfRegisterPairs); |
| ArmManagedRegister pair = |
| ArmManagedRegister::FromRegisterPair(static_cast<RegisterPair>(reg)); |
| blocked_registers[pair.AsRegisterPairLow()] = true; |
| blocked_registers[pair.AsRegisterPairHigh()] = true; |
| return pair; |
| } |
| |
| case Primitive::kPrimByte: |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| size_t reg = AllocateFreeRegisterInternal(blocked_registers, kNumberOfCoreRegisters); |
| return ArmManagedRegister::FromCoreRegister(static_cast<Register>(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 CodeGeneratorARM::SetupBlockedRegisters(bool* blocked_registers) const { |
| bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers); |
| |
| // Don't allocate the dalvik style register pair passing. |
| blocked_register_pairs[R1_R2] = true; |
| |
| // Stack register, LR and PC are always reserved. |
| blocked_registers[SP] = true; |
| blocked_registers[LR] = true; |
| blocked_registers[PC] = true; |
| |
| // Reserve R4 for suspend check. |
| blocked_registers[R4] = true; |
| blocked_register_pairs[R4_R5] = true; |
| |
| // Reserve thread register. |
| blocked_registers[TR] = true; |
| |
| // TODO: We currently don't use Quick's callee saved registers. |
| blocked_registers[R5] = true; |
| blocked_registers[R6] = true; |
| blocked_registers[R7] = true; |
| blocked_registers[R8] = true; |
| blocked_registers[R10] = true; |
| blocked_registers[R11] = true; |
| blocked_register_pairs[R6_R7] = true; |
| } |
| |
| size_t CodeGeneratorARM::GetNumberOfRegisters() const { |
| return kNumberOfRegIds; |
| } |
| |
| static Location ArmCoreLocation(Register reg) { |
| return Location::RegisterLocation(ArmManagedRegister::FromCoreRegister(reg)); |
| } |
| |
| InstructionCodeGeneratorARM::InstructionCodeGeneratorARM(HGraph* graph, CodeGeneratorARM* codegen) |
| : HGraphVisitor(graph), |
| assembler_(codegen->GetAssembler()), |
| codegen_(codegen) {} |
| |
| void CodeGeneratorARM::GenerateFrameEntry() { |
| core_spill_mask_ |= (1 << LR); |
| __ PushList((1 << LR)); |
| |
| SetFrameSize(RoundUp( |
| (GetGraph()->GetMaximumNumberOfOutVRegs() + GetGraph()->GetNumberOfVRegs()) * kVRegSize |
| + kVRegSize // filler |
| + kArmWordSize // Art method |
| + kNumberOfPushedRegistersAtEntry * kArmWordSize, |
| kStackAlignment)); |
| // The return PC has already been pushed on the stack. |
| __ AddConstant(SP, -(GetFrameSize() - kNumberOfPushedRegistersAtEntry * kArmWordSize)); |
| __ str(R0, Address(SP, 0)); |
| } |
| |
| void CodeGeneratorARM::GenerateFrameExit() { |
| __ AddConstant(SP, GetFrameSize() - kNumberOfPushedRegistersAtEntry * kArmWordSize); |
| __ PopList((1 << PC)); |
| } |
| |
| void CodeGeneratorARM::Bind(Label* label) { |
| __ Bind(label); |
| } |
| |
| int32_t CodeGeneratorARM::GetStackSlot(HLocal* local) const { |
| uint16_t reg_number = local->GetRegNumber(); |
| uint16_t number_of_vregs = GetGraph()->GetNumberOfVRegs(); |
| uint16_t number_of_in_vregs = GetGraph()->GetNumberOfInVRegs(); |
| if (reg_number >= number_of_vregs - number_of_in_vregs) { |
| // Local is a parameter of the method. It is stored in the caller's frame. |
| return GetFrameSize() + kArmWordSize // ART method |
| + (reg_number - number_of_vregs + number_of_in_vregs) * kVRegSize; |
| } else { |
| // Local is a temporary in this method. It is stored in this method's frame. |
| return GetFrameSize() - (kNumberOfPushedRegistersAtEntry * kArmWordSize) |
| - kVRegSize // filler. |
| - (number_of_vregs * kVRegSize) |
| + (reg_number * kVRegSize); |
| } |
| } |
| |
| Location CodeGeneratorARM::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 ArmCoreLocation(calling_convention.GetRegisterAt(index)); |
| } else { |
| return Location::StackSlot(calling_convention.GetStackOffsetOf(index, kArmWordSize)); |
| } |
| } |
| |
| case Primitive::kPrimLong: { |
| uint32_t index = gp_index_; |
| gp_index_ += 2; |
| if (index + 1 < calling_convention.GetNumberOfRegisters()) { |
| return Location::RegisterLocation(ArmManagedRegister::FromRegisterPair( |
| calling_convention.GetRegisterPairAt(index))); |
| } else if (index + 1 == calling_convention.GetNumberOfRegisters()) { |
| return Location::QuickParameter(index); |
| } else { |
| return Location::DoubleStackSlot(calling_convention.GetStackOffsetOf(index, kArmWordSize)); |
| } |
| } |
| |
| 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 CodeGeneratorARM::Move32(Location destination, Location source) { |
| if (source.Equals(destination)) { |
| return; |
| } |
| if (destination.IsRegister()) { |
| if (source.IsRegister()) { |
| __ Mov(destination.AsArm().AsCoreRegister(), source.AsArm().AsCoreRegister()); |
| } else { |
| __ ldr(destination.AsArm().AsCoreRegister(), Address(SP, source.GetStackIndex())); |
| } |
| } else { |
| DCHECK(destination.IsStackSlot()); |
| if (source.IsRegister()) { |
| __ str(source.AsArm().AsCoreRegister(), Address(SP, destination.GetStackIndex())); |
| } else { |
| __ ldr(R0, Address(SP, source.GetStackIndex())); |
| __ str(R0, Address(SP, destination.GetStackIndex())); |
| } |
| } |
| } |
| |
| void CodeGeneratorARM::Move64(Location destination, Location source) { |
| if (source.Equals(destination)) { |
| return; |
| } |
| if (destination.IsRegister()) { |
| if (source.IsRegister()) { |
| __ Mov(destination.AsArm().AsRegisterPairLow(), source.AsArm().AsRegisterPairLow()); |
| __ Mov(destination.AsArm().AsRegisterPairHigh(), source.AsArm().AsRegisterPairHigh()); |
| } else if (source.IsQuickParameter()) { |
| uint32_t argument_index = source.GetQuickParameterIndex(); |
| InvokeDexCallingConvention calling_convention; |
| __ Mov(destination.AsArm().AsRegisterPairLow(), |
| calling_convention.GetRegisterAt(argument_index)); |
| __ ldr(destination.AsArm().AsRegisterPairHigh(), |
| Address(SP, calling_convention.GetStackOffsetOf(argument_index + 1, kArmWordSize) + GetFrameSize())); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| if (destination.AsArm().AsRegisterPair() == R1_R2) { |
| __ ldr(R1, Address(SP, source.GetStackIndex())); |
| __ ldr(R2, Address(SP, source.GetHighStackIndex(kArmWordSize))); |
| } else { |
| __ LoadFromOffset(kLoadWordPair, destination.AsArm().AsRegisterPairLow(), |
| SP, source.GetStackIndex()); |
| } |
| } |
| } else if (destination.IsQuickParameter()) { |
| InvokeDexCallingConvention calling_convention; |
| uint32_t argument_index = destination.GetQuickParameterIndex(); |
| if (source.IsRegister()) { |
| __ Mov(calling_convention.GetRegisterAt(argument_index), source.AsArm().AsRegisterPairLow()); |
| __ str(source.AsArm().AsRegisterPairHigh(), |
| Address(SP, calling_convention.GetStackOffsetOf(argument_index + 1, kArmWordSize))); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| __ ldr(calling_convention.GetRegisterAt(argument_index), Address(SP, source.GetStackIndex())); |
| __ ldr(R0, Address(SP, source.GetHighStackIndex(kArmWordSize))); |
| __ str(R0, Address(SP, calling_convention.GetStackOffsetOf(argument_index + 1, kArmWordSize))); |
| } |
| } else { |
| DCHECK(destination.IsDoubleStackSlot()); |
| if (source.IsRegister()) { |
| if (source.AsArm().AsRegisterPair() == R1_R2) { |
| __ str(R1, Address(SP, destination.GetStackIndex())); |
| __ str(R2, Address(SP, destination.GetHighStackIndex(kArmWordSize))); |
| } else { |
| __ StoreToOffset(kStoreWordPair, source.AsArm().AsRegisterPairLow(), |
| SP, destination.GetStackIndex()); |
| } |
| } else if (source.IsQuickParameter()) { |
| InvokeDexCallingConvention calling_convention; |
| uint32_t argument_index = source.GetQuickParameterIndex(); |
| __ str(calling_convention.GetRegisterAt(argument_index), |
| Address(SP, destination.GetStackIndex())); |
| __ ldr(R0, |
| Address(SP, calling_convention.GetStackOffsetOf(argument_index + 1, kArmWordSize) + GetFrameSize())); |
| __ str(R0, Address(SP, destination.GetHighStackIndex(kArmWordSize))); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| __ ldr(R0, Address(SP, source.GetStackIndex())); |
| __ str(R0, Address(SP, destination.GetStackIndex())); |
| __ ldr(R0, Address(SP, source.GetHighStackIndex(kArmWordSize))); |
| __ str(R0, Address(SP, destination.GetHighStackIndex(kArmWordSize))); |
| } |
| } |
| } |
| |
| void CodeGeneratorARM::Move(HInstruction* instruction, Location location, HInstruction* move_for) { |
| if (instruction->AsIntConstant() != nullptr) { |
| int32_t value = instruction->AsIntConstant()->GetValue(); |
| if (location.IsRegister()) { |
| __ LoadImmediate(location.AsArm().AsCoreRegister(), value); |
| } else { |
| __ LoadImmediate(R0, value); |
| __ str(R0, Address(SP, location.GetStackIndex())); |
| } |
| } else if (instruction->AsLongConstant() != nullptr) { |
| int64_t value = instruction->AsLongConstant()->GetValue(); |
| if (location.IsRegister()) { |
| __ LoadImmediate(location.AsArm().AsRegisterPairLow(), Low32Bits(value)); |
| __ LoadImmediate(location.AsArm().AsRegisterPairHigh(), High32Bits(value)); |
| } else { |
| __ LoadImmediate(R0, Low32Bits(value)); |
| __ str(R0, Address(SP, location.GetStackIndex())); |
| __ LoadImmediate(R0, High32Bits(value)); |
| __ str(R0, Address(SP, location.GetHighStackIndex(kArmWordSize))); |
| } |
| } else if (instruction->AsLoadLocal() != nullptr) { |
| uint32_t stack_slot = GetStackSlot(instruction->AsLoadLocal()->GetLocal()); |
| 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(stack_slot)); |
| break; |
| |
| case Primitive::kPrimLong: |
| Move64(location, Location::DoubleStackSlot(stack_slot)); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented type " << instruction->GetType(); |
| } |
| } else { |
| // This can currently only happen when the instruction that requests the move |
| // is the next to be compiled. |
| DCHECK_EQ(instruction->GetNext(), move_for); |
| switch (instruction->GetType()) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimInt: |
| Move32(location, instruction->GetLocations()->Out()); |
| break; |
| |
| case Primitive::kPrimLong: |
| Move64(location, instruction->GetLocations()->Out()); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented type " << instruction->GetType(); |
| } |
| } |
| } |
| |
| void LocationsBuilderARM::VisitGoto(HGoto* got) { |
| got->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitGoto(HGoto* got) { |
| HBasicBlock* successor = got->GetSuccessor(); |
| if (GetGraph()->GetExitBlock() == successor) { |
| codegen_->GenerateFrameExit(); |
| } else if (!codegen_->GoesToNextBlock(got->GetBlock(), successor)) { |
| __ b(codegen_->GetLabelOf(successor)); |
| } |
| } |
| |
| void LocationsBuilderARM::VisitExit(HExit* exit) { |
| exit->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitExit(HExit* exit) { |
| if (kIsDebugBuild) { |
| __ Comment("Unreachable"); |
| __ bkpt(0); |
| } |
| } |
| |
| void LocationsBuilderARM::VisitIf(HIf* if_instr) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(if_instr); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| if_instr->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitIf(HIf* if_instr) { |
| // TODO: Generate the input as a condition, instead of materializing in a register. |
| __ cmp(if_instr->GetLocations()->InAt(0).AsArm().AsCoreRegister(), ShifterOperand(0)); |
| __ b(codegen_->GetLabelOf(if_instr->IfFalseSuccessor()), EQ); |
| if (!codegen_->GoesToNextBlock(if_instr->GetBlock(), if_instr->IfTrueSuccessor())) { |
| __ b(codegen_->GetLabelOf(if_instr->IfTrueSuccessor())); |
| } |
| } |
| |
| void LocationsBuilderARM::VisitEqual(HEqual* equal) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(equal); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| equal->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitEqual(HEqual* equal) { |
| LocationSummary* locations = equal->GetLocations(); |
| __ teq(locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| __ mov(locations->Out().AsArm().AsCoreRegister(), ShifterOperand(1), EQ); |
| __ mov(locations->Out().AsArm().AsCoreRegister(), ShifterOperand(0), NE); |
| } |
| |
| void LocationsBuilderARM::VisitLocal(HLocal* local) { |
| local->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitLocal(HLocal* local) { |
| DCHECK_EQ(local->GetBlock(), GetGraph()->GetEntryBlock()); |
| } |
| |
| void LocationsBuilderARM::VisitLoadLocal(HLoadLocal* load) { |
| load->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitLoadLocal(HLoadLocal* load) { |
| // Nothing to do, this is driven by the code generator. |
| } |
| |
| void LocationsBuilderARM::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 InstructionCodeGeneratorARM::VisitStoreLocal(HStoreLocal* store) { |
| } |
| |
| void LocationsBuilderARM::VisitIntConstant(HIntConstant* constant) { |
| constant->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitIntConstant(HIntConstant* constant) { |
| // Will be generated at use site. |
| } |
| |
| void LocationsBuilderARM::VisitLongConstant(HLongConstant* constant) { |
| constant->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitLongConstant(HLongConstant* constant) { |
| // Will be generated at use site. |
| } |
| |
| void LocationsBuilderARM::VisitReturnVoid(HReturnVoid* ret) { |
| ret->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitReturnVoid(HReturnVoid* ret) { |
| codegen_->GenerateFrameExit(); |
| } |
| |
| void LocationsBuilderARM::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, ArmCoreLocation(R0)); |
| break; |
| |
| case Primitive::kPrimLong: |
| locations->SetInAt( |
| 0, Location::RegisterLocation(ArmManagedRegister::FromRegisterPair(R0_R1))); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType(); |
| } |
| |
| ret->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::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).AsArm().AsCoreRegister(), R0); |
| break; |
| |
| case Primitive::kPrimLong: |
| DCHECK_EQ(ret->GetLocations()->InAt(0).AsArm().AsRegisterPair(), R0_R1); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented return type " << ret->InputAt(0)->GetType(); |
| } |
| } |
| codegen_->GenerateFrameExit(); |
| } |
| |
| void LocationsBuilderARM::VisitInvokeStatic(HInvokeStatic* invoke) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(invoke); |
| locations->AddTemp(Location::RequiresRegister()); |
| |
| 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(ArmCoreLocation(R0)); |
| break; |
| |
| case Primitive::kPrimLong: |
| locations->SetOut(Location::RegisterLocation(ArmManagedRegister::FromRegisterPair(R0_R1))); |
| break; |
| |
| case Primitive::kPrimVoid: |
| break; |
| |
| case Primitive::kPrimDouble: |
| case Primitive::kPrimFloat: |
| LOG(FATAL) << "Unimplemented return type " << invoke->GetType(); |
| break; |
| } |
| |
| invoke->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::LoadCurrentMethod(Register reg) { |
| __ ldr(reg, Address(SP, kCurrentMethodStackOffset)); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitInvokeStatic(HInvokeStatic* invoke) { |
| Register temp = invoke->GetLocations()->GetTemp(0).AsArm().AsCoreRegister(); |
| size_t index_in_cache = mirror::Array::DataOffset(sizeof(mirror::Object*)).Int32Value() + |
| invoke->GetIndexInDexCache() * kArmWordSize; |
| |
| // 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_; |
| __ ldr(temp, Address(temp, mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value())); |
| // temp = temp[index_in_cache] |
| __ ldr(temp, Address(temp, index_in_cache)); |
| // LR = temp[offset_of_quick_compiled_code] |
| __ ldr(LR, Address(temp, |
| mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset().Int32Value())); |
| // LR() |
| __ blx(LR); |
| |
| codegen_->RecordPcInfo(invoke->GetDexPc()); |
| } |
| |
| void LocationsBuilderARM::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::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| 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 InstructionCodeGeneratorARM::VisitAdd(HAdd* add) { |
| LocationSummary* locations = add->GetLocations(); |
| switch (add->GetResultType()) { |
| case Primitive::kPrimInt: |
| __ add(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| break; |
| |
| case Primitive::kPrimLong: |
| __ adds(locations->Out().AsArm().AsRegisterPairLow(), |
| locations->InAt(0).AsArm().AsRegisterPairLow(), |
| ShifterOperand(locations->InAt(1).AsArm().AsRegisterPairLow())); |
| __ adc(locations->Out().AsArm().AsRegisterPairHigh(), |
| locations->InAt(0).AsArm().AsRegisterPairHigh(), |
| ShifterOperand(locations->InAt(1).AsArm().AsRegisterPairHigh())); |
| 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 LocationsBuilderARM::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::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| 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 InstructionCodeGeneratorARM::VisitSub(HSub* sub) { |
| LocationSummary* locations = sub->GetLocations(); |
| switch (sub->GetResultType()) { |
| case Primitive::kPrimInt: |
| __ sub(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| break; |
| |
| case Primitive::kPrimLong: |
| __ subs(locations->Out().AsArm().AsRegisterPairLow(), |
| locations->InAt(0).AsArm().AsRegisterPairLow(), |
| ShifterOperand(locations->InAt(1).AsArm().AsRegisterPairLow())); |
| __ sbc(locations->Out().AsArm().AsRegisterPairHigh(), |
| locations->InAt(0).AsArm().AsRegisterPairHigh(), |
| ShifterOperand(locations->InAt(1).AsArm().AsRegisterPairHigh())); |
| 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(); |
| } |
| } |
| |
| static constexpr Register kRuntimeParameterCoreRegisters[] = { R0, R1 }; |
| static constexpr size_t kRuntimeParameterCoreRegistersLength = |
| arraysize(kRuntimeParameterCoreRegisters); |
| |
| class InvokeRuntimeCallingConvention : public CallingConvention<Register> { |
| public: |
| InvokeRuntimeCallingConvention() |
| : CallingConvention(kRuntimeParameterCoreRegisters, |
| kRuntimeParameterCoreRegistersLength) {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention); |
| }; |
| |
| void LocationsBuilderARM::VisitNewInstance(HNewInstance* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->AddTemp(ArmCoreLocation(calling_convention.GetRegisterAt(0))); |
| locations->AddTemp(ArmCoreLocation(calling_convention.GetRegisterAt(1))); |
| locations->SetOut(ArmCoreLocation(R0)); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitNewInstance(HNewInstance* instruction) { |
| InvokeRuntimeCallingConvention calling_convention; |
| LoadCurrentMethod(calling_convention.GetRegisterAt(1)); |
| __ LoadImmediate(calling_convention.GetRegisterAt(0), instruction->GetTypeIndex()); |
| |
| int32_t offset = QUICK_ENTRYPOINT_OFFSET(kArmWordSize, pAllocObjectWithAccessCheck).Int32Value(); |
| __ ldr(LR, Address(TR, offset)); |
| __ blx(LR); |
| |
| codegen_->RecordPcInfo(instruction->GetDexPc()); |
| } |
| |
| void LocationsBuilderARM::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 InstructionCodeGeneratorARM::VisitParameterValue(HParameterValue* instruction) { |
| // Nothing to do, the parameter is already at its location. |
| } |
| |
| void LocationsBuilderARM::VisitNot(HNot* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitNot(HNot* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| __ eor(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), ShifterOperand(1)); |
| } |
| |
| void LocationsBuilderARM::VisitPhi(HPhi* instruction) { |
| LOG(FATAL) << "Unimplemented"; |
| } |
| |
| void InstructionCodeGeneratorARM::VisitPhi(HPhi* instruction) { |
| LOG(FATAL) << "Unimplemented"; |
| } |
| |
| } // namespace arm |
| } // namespace art |