Line data    Source code

       1             : // Copyright 2018 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_BUILTINS_BUILTINS_DATA_VIEW_GEN_H_
       6             : #define V8_BUILTINS_BUILTINS_DATA_VIEW_GEN_H_
       7             : 
       8             : #include "src/code-stub-assembler.h"
       9             : #include "src/elements-kind.h"
      10             : #include "src/objects/bigint.h"
      11             : 
      12             : namespace v8 {
      13             : namespace internal {
      14             : 
      15        8736 : class DataViewBuiltinsAssembler : public CodeStubAssembler {
      16             :  public:
      17             :   explicit DataViewBuiltinsAssembler(compiler::CodeAssemblerState* state)
      18        8736 :       : CodeStubAssembler(state) {}
      19             : 
      20             :   TNode<Int32T> LoadUint8(TNode<RawPtrT> data_pointer, TNode<UintPtrT> offset) {
      21             :     return UncheckedCast<Int32T>(
      22        2296 :         Load(MachineType::Uint8(), data_pointer, offset));
      23             :   }
      24             : 
      25             :   TNode<Int32T> LoadInt8(TNode<RawPtrT> data_pointer, TNode<UintPtrT> offset) {
      26             :     return UncheckedCast<Int32T>(
      27         280 :         Load(MachineType::Int8(), data_pointer, offset));
      28             :   }
      29             : 
      30             :   void StoreWord8(TNode<RawPtrT> data_pointer, TNode<UintPtrT> offset,
      31             :                   TNode<Word32T> value) {
      32             :     StoreNoWriteBarrier(MachineRepresentation::kWord8, data_pointer, offset,
      33        4592 :                         value);
      34             :   }
      35             : 
      36             :   int32_t DataViewElementSize(ElementsKind elements_kind) {
      37        1120 :     return ElementsKindToByteSize(elements_kind);
      38             :   }
      39             : 
      40             :   TNode<Uint32T> DataViewEncodeBigIntBits(bool sign, int32_t digits) {
      41         672 :     return Unsigned(Int32Constant(BigInt::SignBits::encode(sign) |
      42         224 :                                   BigInt::LengthBits::encode(digits)));
      43             :   }
      44             : 
      45         112 :   TNode<Uint32T> DataViewDecodeBigIntLength(TNode<BigInt> value) {
      46         112 :     TNode<Word32T> bitfield = LoadBigIntBitfield(value);
      47         112 :     return DecodeWord32<BigIntBase::LengthBits>(bitfield);
      48             :   }
      49             : 
      50         112 :   TNode<Uint32T> DataViewDecodeBigIntSign(TNode<BigInt> value) {
      51         112 :     TNode<Word32T> bitfield = LoadBigIntBitfield(value);
      52         112 :     return DecodeWord32<BigIntBase::SignBits>(bitfield);
      53             :   }
      54             : };
      55             : 
      56             : }  // namespace internal
      57             : }  // namespace v8
      58             : 
      59             : #endif  // V8_BUILTINS_BUILTINS_DATA_VIEW_GEN_H_