| // Copyright 2018 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_BUILTINS_BUILTINS_DATA_VIEW_GEN_H_ |
| #define V8_BUILTINS_BUILTINS_DATA_VIEW_GEN_H_ |
| |
| #include "src/elements-kind.h" |
| #include "src/objects/bigint.h" |
| #include "torque-generated/builtins-base-from-dsl-gen.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class DataViewBuiltinsAssembler : public BaseBuiltinsFromDSLAssembler { |
| public: |
| explicit DataViewBuiltinsAssembler(compiler::CodeAssemblerState* state) |
| : BaseBuiltinsFromDSLAssembler(state) {} |
| |
| TNode<Number> LoadDataViewByteOffset(TNode<JSDataView> data_view) { |
| return CAST(LoadObjectField(data_view, JSDataView::kByteOffsetOffset)); |
| } |
| |
| TNode<Number> LoadDataViewByteLength(TNode<JSDataView> data_view) { |
| return CAST(LoadObjectField(data_view, JSDataView::kByteLengthOffset)); |
| } |
| |
| TNode<Int32T> LoadUint8(TNode<RawPtrT> data_pointer, TNode<IntPtrT> offset) { |
| return UncheckedCast<Int32T>( |
| Load(MachineType::Uint8(), data_pointer, offset)); |
| } |
| |
| TNode<Int32T> LoadInt8(TNode<RawPtrT> data_pointer, TNode<IntPtrT> offset) { |
| return UncheckedCast<Int32T>( |
| Load(MachineType::Int8(), data_pointer, offset)); |
| } |
| |
| void StoreWord8(TNode<RawPtrT> data_pointer, TNode<IntPtrT> offset, |
| TNode<Word32T> value) { |
| StoreNoWriteBarrier(MachineRepresentation::kWord8, data_pointer, offset, |
| value); |
| } |
| |
| int32_t DataViewElementSize(ElementsKind elements_kind) { |
| return ElementsKindToByteSize(elements_kind); |
| } |
| |
| TNode<IntPtrT> DataViewEncodeBigIntBits(bool sign, int32_t digits) { |
| return IntPtrConstant(BigInt::SignBits::encode(sign) | |
| BigInt::LengthBits::encode(digits)); |
| } |
| |
| TNode<UintPtrT> DataViewDecodeBigIntLength(TNode<BigInt> value) { |
| TNode<WordT> bitfield = LoadBigIntBitfield(value); |
| return DecodeWord<BigIntBase::LengthBits>(bitfield); |
| } |
| |
| TNode<UintPtrT> DataViewDecodeBigIntSign(TNode<BigInt> value) { |
| TNode<WordT> bitfield = LoadBigIntBitfield(value); |
| return DecodeWord<BigIntBase::SignBits>(bitfield); |
| } |
| }; |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_BUILTINS_BUILTINS_DATA_VIEW_GEN_H_ |