| /* |
| * 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 "entrypoints/quick/quick_entrypoints.h" |
| #include "gc/accounting/card_table.h" |
| #include "mirror/array.h" |
| #include "mirror/art_method.h" |
| #include "thread.h" |
| #include "utils/assembler.h" |
| #include "utils/arm/assembler_arm.h" |
| #include "utils/arm/managed_register_arm.h" |
| #include "utils/stack_checks.h" |
| |
| namespace art { |
| |
| arm::ArmManagedRegister Location::AsArm() const { |
| return reg().AsArm(); |
| } |
| |
| namespace arm { |
| |
| static constexpr bool kExplicitStackOverflowCheck = false; |
| |
| static constexpr int kNumberOfPushedRegistersAtEntry = 1 + 2; // LR, R6, R7 |
| static constexpr int kCurrentMethodStackOffset = 0; |
| |
| static Location ArmCoreLocation(Register reg) { |
| return Location::RegisterLocation(ArmManagedRegister::FromCoreRegister(reg)); |
| } |
| |
| static constexpr Register kRuntimeParameterCoreRegisters[] = { R0, R1, R2 }; |
| 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<ArmAssembler*>(codegen->GetAssembler())-> |
| |
| class NullCheckSlowPathARM : public SlowPathCode { |
| public: |
| explicit NullCheckSlowPathARM(uint32_t dex_pc) : dex_pc_(dex_pc) {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| __ Bind(GetEntryLabel()); |
| int32_t offset = QUICK_ENTRYPOINT_OFFSET(kArmWordSize, pThrowNullPointer).Int32Value(); |
| __ ldr(LR, Address(TR, offset)); |
| __ blx(LR); |
| codegen->RecordPcInfo(dex_pc_); |
| } |
| |
| private: |
| const uint32_t dex_pc_; |
| DISALLOW_COPY_AND_ASSIGN(NullCheckSlowPathARM); |
| }; |
| |
| class StackOverflowCheckSlowPathARM : public SlowPathCode { |
| public: |
| StackOverflowCheckSlowPathARM() {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| __ Bind(GetEntryLabel()); |
| __ LoadFromOffset(kLoadWord, PC, TR, |
| QUICK_ENTRYPOINT_OFFSET(kArmWordSize, pThrowStackOverflow).Int32Value()); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(StackOverflowCheckSlowPathARM); |
| }; |
| |
| class BoundsCheckSlowPathARM : public SlowPathCode { |
| public: |
| explicit BoundsCheckSlowPathARM(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 { |
| CodeGeneratorARM* arm_codegen = reinterpret_cast<CodeGeneratorARM*>(codegen); |
| __ Bind(GetEntryLabel()); |
| InvokeRuntimeCallingConvention calling_convention; |
| arm_codegen->Move32(ArmCoreLocation(calling_convention.GetRegisterAt(0)), index_location_); |
| arm_codegen->Move32(ArmCoreLocation(calling_convention.GetRegisterAt(1)), length_location_); |
| int32_t offset = QUICK_ENTRYPOINT_OFFSET(kArmWordSize, pThrowArrayBounds).Int32Value(); |
| __ ldr(LR, Address(TR, offset)); |
| __ blx(LR); |
| codegen->RecordPcInfo(dex_pc_); |
| } |
| |
| private: |
| const uint32_t dex_pc_; |
| const Location index_location_; |
| const Location length_location_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BoundsCheckSlowPathARM); |
| }; |
| |
| #undef __ |
| #define __ reinterpret_cast<ArmAssembler*>(GetAssembler())-> |
| |
| inline Condition ARMCondition(IfCondition cond) { |
| switch (cond) { |
| case kCondEQ: return EQ; |
| case kCondNE: return NE; |
| case kCondLT: return LT; |
| case kCondLE: return LE; |
| case kCondGT: return GT; |
| case kCondGE: return GE; |
| default: |
| LOG(FATAL) << "Unknown if condition"; |
| } |
| return EQ; // Unreachable. |
| } |
| |
| inline Condition ARMOppositeCondition(IfCondition cond) { |
| switch (cond) { |
| case kCondEQ: return NE; |
| case kCondNE: return EQ; |
| case kCondLT: return GE; |
| case kCondLE: return GT; |
| case kCondGT: return LE; |
| case kCondGE: return LT; |
| default: |
| LOG(FATAL) << "Unknown if condition"; |
| } |
| return EQ; // Unreachable. |
| } |
| |
| void CodeGeneratorARM::DumpCoreRegister(std::ostream& stream, int reg) const { |
| stream << ArmManagedRegister::FromCoreRegister(Register(reg)); |
| } |
| |
| void CodeGeneratorARM::DumpFloatingPointRegister(std::ostream& stream, int reg) const { |
| stream << ArmManagedRegister::FromDRegister(DRegister(reg)); |
| } |
| |
| CodeGeneratorARM::CodeGeneratorARM(HGraph* graph) |
| : CodeGenerator(graph, kNumberOfRegIds), |
| location_builder_(graph, this), |
| instruction_visitor_(graph, this), |
| move_resolver_(graph->GetArena(), this), |
| assembler_(true) {} |
| |
| size_t CodeGeneratorARM::FrameEntrySpillSize() const { |
| return kNumberOfPushedRegistersAtEntry * kArmWordSize; |
| } |
| |
| 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: { |
| bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers); |
| size_t reg = AllocateFreeRegisterInternal(blocked_register_pairs, kNumberOfRegisterPairs); |
| ArmManagedRegister pair = |
| ArmManagedRegister::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++) { |
| ArmManagedRegister current = |
| ArmManagedRegister::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: { |
| int reg = AllocateFreeRegisterInternal(blocked_registers, kNumberOfCoreRegisters); |
| // Block all register pairs that contain `reg`. |
| bool* blocked_register_pairs = GetBlockedRegisterPairs(blocked_registers); |
| for (int i = 0; i < kNumberOfRegisterPairs; i++) { |
| ArmManagedRegister current = |
| ArmManagedRegister::FromRegisterPair(static_cast<RegisterPair>(i)); |
| if (current.AsRegisterPairLow() == reg || current.AsRegisterPairHigh() == reg) { |
| blocked_register_pairs[i] = true; |
| } |
| } |
| 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; |
| |
| // Reserve temp register. |
| blocked_registers[IP] = true; |
| |
| // TODO: We currently don't use Quick's callee saved registers. |
| // We always save and restore R6 and R7 to make sure we can use three |
| // register pairs for long operations. |
| blocked_registers[R5] = true; |
| blocked_registers[R8] = true; |
| blocked_registers[R10] = true; |
| blocked_registers[R11] = true; |
| } |
| |
| size_t CodeGeneratorARM::GetNumberOfRegisters() const { |
| return kNumberOfRegIds; |
| } |
| |
| InstructionCodeGeneratorARM::InstructionCodeGeneratorARM(HGraph* graph, CodeGeneratorARM* codegen) |
| : HGraphVisitor(graph), |
| assembler_(codegen->GetAssembler()), |
| codegen_(codegen) {} |
| |
| void CodeGeneratorARM::GenerateFrameEntry() { |
| bool skip_overflow_check = IsLeafMethod() && !FrameNeedsStackCheck(GetFrameSize(), InstructionSet::kArm); |
| if (!skip_overflow_check) { |
| if (kExplicitStackOverflowCheck) { |
| SlowPathCode* slow_path = new (GetGraph()->GetArena()) StackOverflowCheckSlowPathARM(); |
| AddSlowPath(slow_path); |
| |
| __ LoadFromOffset(kLoadWord, IP, TR, Thread::StackEndOffset<kArmWordSize>().Int32Value()); |
| __ cmp(SP, ShifterOperand(IP)); |
| __ b(slow_path->GetEntryLabel(), CC); |
| } else { |
| __ AddConstant(IP, SP, -static_cast<int32_t>(GetStackOverflowReservedBytes(kArm))); |
| __ ldr(IP, Address(IP, 0)); |
| RecordPcInfo(0); |
| } |
| } |
| |
| core_spill_mask_ |= (1 << LR | 1 << R6 | 1 << R7); |
| __ PushList(1 << LR | 1 << R6 | 1 << R7); |
| |
| // 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 | 1 << R6 | 1 << R7); |
| } |
| |
| void CodeGeneratorARM::Bind(Label* label) { |
| __ Bind(label); |
| } |
| |
| 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)); |
| } |
| } |
| |
| 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)); |
| } |
| } |
| |
| 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(IP, Address(SP, source.GetStackIndex())); |
| __ str(IP, 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) + 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))); |
| } 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))); |
| } |
| } 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) + GetFrameSize())); |
| __ str(R0, Address(SP, destination.GetHighStackIndex(kArmWordSize))); |
| } else { |
| DCHECK(source.IsDoubleStackSlot()); |
| __ ldr(IP, Address(SP, source.GetStackIndex())); |
| __ str(IP, Address(SP, destination.GetStackIndex())); |
| __ ldr(IP, Address(SP, source.GetHighStackIndex(kArmWordSize))); |
| __ str(IP, Address(SP, destination.GetHighStackIndex(kArmWordSize))); |
| } |
| } |
| } |
| |
| void CodeGeneratorARM::Move(HInstruction* instruction, Location location, HInstruction* move_for) { |
| LocationSummary* locations = instruction->GetLocations(); |
| if (locations != nullptr && locations->Out().Equals(location)) { |
| return; |
| } |
| |
| if (instruction->AsIntConstant() != nullptr) { |
| int32_t value = instruction->AsIntConstant()->GetValue(); |
| if (location.IsRegister()) { |
| __ LoadImmediate(location.AsArm().AsCoreRegister(), value); |
| } else { |
| DCHECK(location.IsStackSlot()); |
| __ LoadImmediate(IP, value); |
| __ str(IP, 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 { |
| DCHECK(location.IsDoubleStackSlot()); |
| __ LoadImmediate(IP, Low32Bits(value)); |
| __ str(IP, Address(SP, location.GetStackIndex())); |
| __ LoadImmediate(IP, High32Bits(value)); |
| __ str(IP, 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 { |
| 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::kPrimNot: |
| case Primitive::kPrimInt: |
| Move32(location, locations->Out()); |
| break; |
| |
| case Primitive::kPrimLong: |
| Move64(location, locations->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); |
| 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 InstructionCodeGeneratorARM::VisitIf(HIf* if_instr) { |
| HInstruction* cond = if_instr->InputAt(0); |
| DCHECK(cond->IsCondition()); |
| HCondition* condition = cond->AsCondition(); |
| if (condition->NeedsMaterialization()) { |
| // Condition has been materialized, compare the output to 0 |
| DCHECK(if_instr->GetLocations()->InAt(0).IsRegister()); |
| __ cmp(if_instr->GetLocations()->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(0)); |
| __ b(codegen_->GetLabelOf(if_instr->IfTrueSuccessor()), EQ); |
| } else { |
| // Condition has not been materialized, use its inputs as the comparison and its |
| // condition as the branch condition. |
| LocationSummary* locations = condition->GetLocations(); |
| if (locations->InAt(1).IsRegister()) { |
| __ cmp(locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| } else { |
| DCHECK(locations->InAt(1).IsConstant()); |
| int32_t value = locations->InAt(1).GetConstant()->AsIntConstant()->GetValue(); |
| ShifterOperand operand; |
| if (ShifterOperand::CanHoldArm(value, &operand)) { |
| __ cmp(locations->InAt(0).AsArm().AsCoreRegister(), ShifterOperand(value)); |
| } else { |
| Register temp = IP; |
| __ LoadImmediate(temp, value); |
| __ cmp(locations->InAt(0).AsArm().AsCoreRegister(), ShifterOperand(temp)); |
| } |
| } |
| __ b(codegen_->GetLabelOf(if_instr->IfTrueSuccessor()), |
| ARMCondition(condition->GetCondition())); |
| } |
| |
| if (!codegen_->GoesToNextBlock(if_instr->GetBlock(), if_instr->IfFalseSuccessor())) { |
| __ b(codegen_->GetLabelOf(if_instr->IfFalseSuccessor())); |
| } |
| } |
| |
| |
| void LocationsBuilderARM::VisitCondition(HCondition* comp) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(comp); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(comp->InputAt(1))); |
| if (comp->NeedsMaterialization()) { |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| comp->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitCondition(HCondition* comp) { |
| if (!comp->NeedsMaterialization()) return; |
| |
| LocationSummary* locations = comp->GetLocations(); |
| if (locations->InAt(1).IsRegister()) { |
| __ cmp(locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| } else { |
| DCHECK(locations->InAt(1).IsConstant()); |
| int32_t value = locations->InAt(1).GetConstant()->AsIntConstant()->GetValue(); |
| ShifterOperand operand; |
| if (ShifterOperand::CanHoldArm(value, &operand)) { |
| __ cmp(locations->InAt(0).AsArm().AsCoreRegister(), ShifterOperand(value)); |
| } else { |
| Register temp = IP; |
| __ LoadImmediate(temp, value); |
| __ cmp(locations->InAt(0).AsArm().AsCoreRegister(), ShifterOperand(temp)); |
| } |
| } |
| __ it(ARMCondition(comp->GetCondition()), kItElse); |
| __ mov(locations->Out().AsArm().AsCoreRegister(), ShifterOperand(1), |
| ARMCondition(comp->GetCondition())); |
| __ mov(locations->Out().AsArm().AsCoreRegister(), ShifterOperand(0), |
| ARMOppositeCondition(comp->GetCondition())); |
| } |
| |
| void LocationsBuilderARM::VisitEqual(HEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitEqual(HEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderARM::VisitNotEqual(HNotEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitNotEqual(HNotEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderARM::VisitLessThan(HLessThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitLessThan(HLessThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderARM::VisitLessThanOrEqual(HLessThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitLessThanOrEqual(HLessThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderARM::VisitGreaterThan(HGreaterThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitGreaterThan(HGreaterThan* comp) { |
| VisitCondition(comp); |
| } |
| |
| void LocationsBuilderARM::VisitGreaterThanOrEqual(HGreaterThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitGreaterThanOrEqual(HGreaterThanOrEqual* comp) { |
| VisitCondition(comp); |
| } |
| |
| 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) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| constant->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitIntConstant(HIntConstant* constant) { |
| } |
| |
| void LocationsBuilderARM::VisitLongConstant(HLongConstant* constant) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| constant->SetLocations(locations); |
| } |
| |
| 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) { |
| codegen_->MarkNotLeaf(); |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(invoke); |
| locations->AddTemp(ArmCoreLocation(R0)); |
| |
| 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(); |
| uint32_t heap_reference_size = sizeof(mirror::HeapReference<mirror::Object>); |
| size_t index_in_cache = mirror::Array::DataOffset(heap_reference_size).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()); |
| DCHECK(!codegen_->IsLeafMethod()); |
| } |
| |
| 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::RegisterOrConstant(add->InputAt(1))); |
| 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: |
| if (locations->InAt(1).IsRegister()) { |
| __ add(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| } else { |
| __ AddConstant(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), |
| locations->InAt(1).GetConstant()->AsIntConstant()->GetValue()); |
| } |
| 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::RegisterOrConstant(sub->InputAt(1))); |
| 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: { |
| if (locations->InAt(1).IsRegister()) { |
| __ sub(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), |
| ShifterOperand(locations->InAt(1).AsArm().AsCoreRegister())); |
| } else { |
| __ AddConstant(locations->Out().AsArm().AsCoreRegister(), |
| locations->InAt(0).AsArm().AsCoreRegister(), |
| -locations->InAt(1).GetConstant()->AsIntConstant()->GetValue()); |
| } |
| 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(); |
| } |
| } |
| |
| void LocationsBuilderARM::VisitNewInstance(HNewInstance* instruction) { |
| codegen_->MarkNotLeaf(); |
| 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()); |
| DCHECK(!codegen_->IsLeafMethod()); |
| } |
| |
| 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::VisitCompare(HCompare* compare) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(compare); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| compare->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitCompare(HCompare* compare) { |
| Label greater, done; |
| LocationSummary* locations = compare->GetLocations(); |
| switch (compare->InputAt(0)->GetType()) { |
| case Primitive::kPrimLong: { |
| Register output = locations->Out().AsArm().AsCoreRegister(); |
| ArmManagedRegister left = locations->InAt(0).AsArm(); |
| ArmManagedRegister right = locations->InAt(1).AsArm(); |
| Label less, greater, done; |
| __ cmp(left.AsRegisterPairHigh(), |
| ShifterOperand(right.AsRegisterPairHigh())); // Signed compare. |
| __ b(&less, LT); |
| __ b(&greater, GT); |
| // Do LoadImmediate before any `cmp`, as LoadImmediate might affect |
| // the status flags. |
| __ LoadImmediate(output, 0); |
| __ cmp(left.AsRegisterPairLow(), |
| ShifterOperand(right.AsRegisterPairLow())); // Unsigned compare. |
| __ b(&done, EQ); |
| __ b(&less, CC); |
| |
| __ Bind(&greater); |
| __ LoadImmediate(output, 1); |
| __ b(&done); |
| |
| __ Bind(&less); |
| __ LoadImmediate(output, -1); |
| |
| __ Bind(&done); |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unimplemented compare type " << compare->InputAt(0)->GetType(); |
| } |
| } |
| |
| void LocationsBuilderARM::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 InstructionCodeGeneratorARM::VisitPhi(HPhi* instruction) { |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void LocationsBuilderARM::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| // Temporary registers for the write barrier. |
| if (instruction->InputAt(1)->GetType() == Primitive::kPrimNot) { |
| locations->AddTemp(Location::RequiresRegister()); |
| locations->AddTemp(Location::RequiresRegister()); |
| } |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsArm().AsCoreRegister(); |
| uint32_t offset = instruction->GetFieldOffset().Uint32Value(); |
| Primitive::Type field_type = instruction->InputAt(1)->GetType(); |
| |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: { |
| Register value = locations->InAt(1).AsArm().AsCoreRegister(); |
| __ StoreToOffset(kStoreByte, value, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimShort: |
| case Primitive::kPrimChar: { |
| Register value = locations->InAt(1).AsArm().AsCoreRegister(); |
| __ StoreToOffset(kStoreHalfword, value, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| Register value = locations->InAt(1).AsArm().AsCoreRegister(); |
| __ StoreToOffset(kStoreWord, value, obj, offset); |
| if (field_type == Primitive::kPrimNot) { |
| Register temp = locations->GetTemp(0).AsArm().AsCoreRegister(); |
| Register card = locations->GetTemp(1).AsArm().AsCoreRegister(); |
| codegen_->MarkGCCard(temp, card, obj, value); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| ArmManagedRegister value = locations->InAt(1).AsArm(); |
| __ StoreToOffset(kStoreWordPair, value.AsRegisterPairLow(), obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << field_type; |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << field_type; |
| } |
| } |
| |
| void LocationsBuilderARM::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsArm().AsCoreRegister(); |
| uint32_t offset = instruction->GetFieldOffset().Uint32Value(); |
| |
| switch (instruction->GetType()) { |
| case Primitive::kPrimBoolean: { |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| __ LoadFromOffset(kLoadUnsignedByte, out, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimByte: { |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| __ LoadFromOffset(kLoadSignedByte, out, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimShort: { |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| __ LoadFromOffset(kLoadSignedHalfword, out, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimChar: { |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| __ LoadFromOffset(kLoadUnsignedHalfword, out, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| __ LoadFromOffset(kLoadWord, out, obj, offset); |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| // TODO: support volatile. |
| ArmManagedRegister out = locations->Out().AsArm(); |
| __ LoadFromOffset(kLoadWordPair, out.AsRegisterPairLow(), obj, 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 LocationsBuilderARM::VisitNullCheck(HNullCheck* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| // TODO: Have a normalization phase that makes this instruction never used. |
| locations->SetOut(Location::SameAsFirstInput()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitNullCheck(HNullCheck* instruction) { |
| SlowPathCode* slow_path = |
| new (GetGraph()->GetArena()) NullCheckSlowPathARM(instruction->GetDexPc()); |
| codegen_->AddSlowPath(slow_path); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location obj = locations->InAt(0); |
| DCHECK(obj.Equals(locations->Out())); |
| |
| if (obj.IsRegister()) { |
| __ cmp(obj.AsArm().AsCoreRegister(), ShifterOperand(0)); |
| } |
| __ b(slow_path->GetEntryLabel(), EQ); |
| } |
| |
| void LocationsBuilderARM::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 InstructionCodeGeneratorARM::VisitArrayGet(HArrayGet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsArm().AsCoreRegister(); |
| 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().AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset; |
| __ LoadFromOffset(kLoadUnsignedByte, out, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister())); |
| __ LoadFromOffset(kLoadUnsignedByte, out, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimByte: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int8_t)).Uint32Value(); |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset; |
| __ LoadFromOffset(kLoadSignedByte, out, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister())); |
| __ LoadFromOffset(kLoadSignedByte, out, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimShort: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int16_t)).Uint32Value(); |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset; |
| __ LoadFromOffset(kLoadSignedHalfword, out, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_2)); |
| __ LoadFromOffset(kLoadSignedHalfword, out, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimChar: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint16_t)).Uint32Value(); |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset; |
| __ LoadFromOffset(kLoadUnsignedHalfword, out, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_2)); |
| __ LoadFromOffset(kLoadUnsignedHalfword, out, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: { |
| DCHECK_EQ(sizeof(mirror::HeapReference<mirror::Object>), sizeof(int32_t)); |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int32_t)).Uint32Value(); |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4) + data_offset; |
| __ LoadFromOffset(kLoadWord, out, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_4)); |
| __ LoadFromOffset(kLoadWord, out, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int64_t)).Uint32Value(); |
| ArmManagedRegister out = locations->Out().AsArm(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8) + data_offset; |
| __ LoadFromOffset(kLoadWordPair, out.AsRegisterPairLow(), obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_8)); |
| __ LoadFromOffset(kLoadWordPair, out.AsRegisterPairLow(), IP, data_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 LocationsBuilderARM::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, ArmCoreLocation(calling_convention.GetRegisterAt(0))); |
| locations->SetInAt(1, ArmCoreLocation(calling_convention.GetRegisterAt(1))); |
| locations->SetInAt(2, ArmCoreLocation(calling_convention.GetRegisterAt(2))); |
| codegen_->MarkNotLeaf(); |
| } else { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| locations->SetInAt(2, Location::RequiresRegister()); |
| } |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitArraySet(HArraySet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = locations->InAt(0).AsArm().AsCoreRegister(); |
| 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(); |
| Register value = locations->InAt(2).AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset; |
| __ StoreToOffset(kStoreByte, value, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister())); |
| __ StoreToOffset(kStoreByte, value, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimShort: |
| case Primitive::kPrimChar: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint16_t)).Uint32Value(); |
| Register value = locations->InAt(2).AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset; |
| __ StoreToOffset(kStoreHalfword, value, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_2)); |
| __ StoreToOffset(kStoreHalfword, value, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimInt: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int32_t)).Uint32Value(); |
| Register value = locations->InAt(2).AsArm().AsCoreRegister(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4) + data_offset; |
| __ StoreToOffset(kStoreWord, value, obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_4)); |
| __ StoreToOffset(kStoreWord, value, IP, data_offset); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimNot: { |
| int32_t offset = QUICK_ENTRYPOINT_OFFSET(kArmWordSize, pAputObject).Int32Value(); |
| __ ldr(LR, Address(TR, offset)); |
| __ blx(LR); |
| codegen_->RecordPcInfo(instruction->GetDexPc()); |
| DCHECK(!codegen_->IsLeafMethod()); |
| break; |
| } |
| |
| case Primitive::kPrimLong: { |
| uint32_t data_offset = mirror::Array::DataOffset(sizeof(int64_t)).Uint32Value(); |
| ArmManagedRegister value = locations->InAt(2).AsArm(); |
| if (index.IsConstant()) { |
| size_t offset = (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8) + data_offset; |
| __ StoreToOffset(kStoreWordPair, value.AsRegisterPairLow(), obj, offset); |
| } else { |
| __ add(IP, obj, ShifterOperand(index.AsArm().AsCoreRegister(), LSL, TIMES_8)); |
| __ StoreToOffset(kStoreWordPair, value.AsRegisterPairLow(), IP, data_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 LocationsBuilderARM::VisitArrayLength(HArrayLength* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| instruction->SetLocations(locations); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitArrayLength(HArrayLength* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| uint32_t offset = mirror::Array::LengthOffset().Uint32Value(); |
| Register obj = locations->InAt(0).AsArm().AsCoreRegister(); |
| Register out = locations->Out().AsArm().AsCoreRegister(); |
| __ LoadFromOffset(kLoadWord, out, obj, offset); |
| } |
| |
| void LocationsBuilderARM::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 InstructionCodeGeneratorARM::VisitBoundsCheck(HBoundsCheck* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| SlowPathCode* slow_path = new (GetGraph()->GetArena()) BoundsCheckSlowPathARM( |
| instruction->GetDexPc(), locations->InAt(0), locations->InAt(1)); |
| codegen_->AddSlowPath(slow_path); |
| |
| Register index = locations->InAt(0).AsArm().AsCoreRegister(); |
| Register length = locations->InAt(1).AsArm().AsCoreRegister(); |
| |
| __ cmp(index, ShifterOperand(length)); |
| __ b(slow_path->GetEntryLabel(), CS); |
| } |
| |
| void CodeGeneratorARM::MarkGCCard(Register temp, Register card, Register object, Register value) { |
| Label is_null; |
| __ CompareAndBranchIfZero(value, &is_null); |
| __ LoadFromOffset(kLoadWord, card, TR, Thread::CardTableOffset<kArmWordSize>().Int32Value()); |
| __ Lsr(temp, object, gc::accounting::CardTable::kCardShift); |
| __ strb(card, Address(card, temp)); |
| __ Bind(&is_null); |
| } |
| |
| void LocationsBuilderARM::VisitTemporary(HTemporary* temp) { |
| temp->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM::VisitTemporary(HTemporary* temp) { |
| // Nothing to do, this is driven by the code generator. |
| } |
| |
| void LocationsBuilderARM::VisitParallelMove(HParallelMove* instruction) { |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void InstructionCodeGeneratorARM::VisitParallelMove(HParallelMove* instruction) { |
| codegen_->GetMoveResolver()->EmitNativeCode(instruction); |
| } |
| |
| ArmAssembler* ParallelMoveResolverARM::GetAssembler() const { |
| return codegen_->GetAssembler(); |
| } |
| |
| void ParallelMoveResolverARM::EmitMove(size_t index) { |
| MoveOperands* move = moves_.Get(index); |
| Location source = move->GetSource(); |
| Location destination = move->GetDestination(); |
| |
| if (source.IsRegister()) { |
| if (destination.IsRegister()) { |
| __ Mov(destination.AsArm().AsCoreRegister(), source.AsArm().AsCoreRegister()); |
| } else { |
| DCHECK(destination.IsStackSlot()); |
| __ StoreToOffset(kStoreWord, source.AsArm().AsCoreRegister(), |
| SP, destination.GetStackIndex()); |
| } |
| } else if (source.IsStackSlot()) { |
| if (destination.IsRegister()) { |
| __ LoadFromOffset(kLoadWord, destination.AsArm().AsCoreRegister(), |
| SP, source.GetStackIndex()); |
| } else { |
| DCHECK(destination.IsStackSlot()); |
| __ LoadFromOffset(kLoadWord, IP, SP, source.GetStackIndex()); |
| __ StoreToOffset(kStoreWord, IP, SP, destination.GetStackIndex()); |
| } |
| } else { |
| DCHECK(source.IsConstant()); |
| DCHECK(source.GetConstant()->AsIntConstant() != nullptr); |
| int32_t value = source.GetConstant()->AsIntConstant()->GetValue(); |
| if (destination.IsRegister()) { |
| __ LoadImmediate(destination.AsArm().AsCoreRegister(), value); |
| } else { |
| DCHECK(destination.IsStackSlot()); |
| __ LoadImmediate(IP, value); |
| __ str(IP, Address(SP, destination.GetStackIndex())); |
| } |
| } |
| } |
| |
| void ParallelMoveResolverARM::Exchange(Register reg, int mem) { |
| __ Mov(IP, reg); |
| __ LoadFromOffset(kLoadWord, reg, SP, mem); |
| __ StoreToOffset(kStoreWord, IP, SP, mem); |
| } |
| |
| void ParallelMoveResolverARM::Exchange(int mem1, int mem2) { |
| ScratchRegisterScope ensure_scratch(this, IP, R0, codegen_->GetNumberOfCoreRegisters()); |
| int stack_offset = ensure_scratch.IsSpilled() ? kArmWordSize : 0; |
| __ LoadFromOffset(kLoadWord, static_cast<Register>(ensure_scratch.GetRegister()), |
| SP, mem1 + stack_offset); |
| __ LoadFromOffset(kLoadWord, IP, SP, mem2 + stack_offset); |
| __ StoreToOffset(kStoreWord, static_cast<Register>(ensure_scratch.GetRegister()), |
| SP, mem2 + stack_offset); |
| __ StoreToOffset(kStoreWord, IP, SP, mem1 + stack_offset); |
| } |
| |
| void ParallelMoveResolverARM::EmitSwap(size_t index) { |
| MoveOperands* move = moves_.Get(index); |
| Location source = move->GetSource(); |
| Location destination = move->GetDestination(); |
| |
| if (source.IsRegister() && destination.IsRegister()) { |
| DCHECK_NE(source.AsArm().AsCoreRegister(), IP); |
| DCHECK_NE(destination.AsArm().AsCoreRegister(), IP); |
| __ Mov(IP, source.AsArm().AsCoreRegister()); |
| __ Mov(source.AsArm().AsCoreRegister(), destination.AsArm().AsCoreRegister()); |
| __ Mov(destination.AsArm().AsCoreRegister(), IP); |
| } else if (source.IsRegister() && destination.IsStackSlot()) { |
| Exchange(source.AsArm().AsCoreRegister(), destination.GetStackIndex()); |
| } else if (source.IsStackSlot() && destination.IsRegister()) { |
| Exchange(destination.AsArm().AsCoreRegister(), source.GetStackIndex()); |
| } else if (source.IsStackSlot() && destination.IsStackSlot()) { |
| Exchange(source.GetStackIndex(), destination.GetStackIndex()); |
| } else { |
| LOG(FATAL) << "Unimplemented"; |
| } |
| } |
| |
| void ParallelMoveResolverARM::SpillScratch(int reg) { |
| __ Push(static_cast<Register>(reg)); |
| } |
| |
| void ParallelMoveResolverARM::RestoreScratch(int reg) { |
| __ Pop(static_cast<Register>(reg)); |
| } |
| |
| } // namespace arm |
| } // namespace art |
