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// 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_
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