// Copyright 2019 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_BIGINT_GEN_H_ #define V8_BUILTINS_BUILTINS_BIGINT_GEN_H_ #include "src/codegen/code-stub-assembler.h" #include "src/objects/bigint.h" namespace v8 { namespace internal { class BigIntBuiltinsAssembler : public CodeStubAssembler { public: explicit BigIntBuiltinsAssembler(compiler::CodeAssemblerState* state) : CodeStubAssembler(state) {} TNode<IntPtrT> ReadBigIntLength(TNode<BigInt> value) { TNode<Word32T> bitfield = LoadBigIntBitfield(value); return ChangeInt32ToIntPtr( Signed(DecodeWord32<BigIntBase::LengthBits>(bitfield))); } TNode<Uint32T> ReadBigIntSign(TNode<BigInt> value) { TNode<Word32T> bitfield = LoadBigIntBitfield(value); return DecodeWord32<BigIntBase::SignBits>(bitfield); } void WriteBigIntSignAndLength(TNode<BigInt> bigint, TNode<Uint32T> sign, TNode<IntPtrT> length) { STATIC_ASSERT(BigIntBase::SignBits::kShift == 0); TNode<Uint32T> bitfield = Unsigned( Word32Or(Word32Shl(TruncateIntPtrToInt32(length), Int32Constant(BigIntBase::LengthBits::kShift)), Word32And(sign, Int32Constant(BigIntBase::SignBits::kMask)))); StoreBigIntBitfield(bigint, bitfield); } void CppAbsoluteAddAndCanonicalize(TNode<BigInt> result, TNode<BigInt> x, TNode<BigInt> y) { TNode<ExternalReference> mutable_big_int_absolute_add_and_canonicalize = ExternalConstant( ExternalReference:: mutable_big_int_absolute_add_and_canonicalize_function()); CallCFunction(mutable_big_int_absolute_add_and_canonicalize, MachineType::AnyTagged(), std::make_pair(MachineType::AnyTagged(), result), std::make_pair(MachineType::AnyTagged(), x), std::make_pair(MachineType::AnyTagged(), y)); } void CppAbsoluteSubAndCanonicalize(TNode<BigInt> result, TNode<BigInt> x, TNode<BigInt> y) { TNode<ExternalReference> mutable_big_int_absolute_sub_and_canonicalize = ExternalConstant( ExternalReference:: mutable_big_int_absolute_sub_and_canonicalize_function()); CallCFunction(mutable_big_int_absolute_sub_and_canonicalize, MachineType::AnyTagged(), std::make_pair(MachineType::AnyTagged(), result), std::make_pair(MachineType::AnyTagged(), x), std::make_pair(MachineType::AnyTagged(), y)); } TNode<Int32T> CppAbsoluteCompare(TNode<BigInt> x, TNode<BigInt> y) { TNode<ExternalReference> mutable_big_int_absolute_compare = ExternalConstant( ExternalReference::mutable_big_int_absolute_compare_function()); TNode<Int32T> result = UncheckedCast<Int32T>( CallCFunction(mutable_big_int_absolute_compare, MachineType::Int32(), std::make_pair(MachineType::AnyTagged(), x), std::make_pair(MachineType::AnyTagged(), y))); return result; } }; } // namespace internal } // namespace v8 #endif // V8_BUILTINS_BUILTINS_BIGINT_GEN_H_