2022-08-16 13:05:02 +00:00
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/*
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* Copyright (c) 2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMASCRIPT_METHOD_LITERAL_H
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#define ECMASCRIPT_METHOD_LITERAL_H
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#include "ecmascript/base/aligned_struct.h"
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2022-08-26 12:40:41 +00:00
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#include "ecmascript/js_function_kind.h"
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2022-08-16 13:05:02 +00:00
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#include "ecmascript/js_tagged_value.h"
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#include "ecmascript/mem/c_string.h"
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#include "libpandafile/file.h"
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static constexpr uint32_t CALL_TYPE_MASK = 0xF; // 0xF: the last 4 bits are used as callType
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namespace panda::ecmascript {
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class JSPandaFile;
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using EntityId = panda_file::File::EntityId;
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struct PUBLIC_API MethodLiteral : public base::AlignedStruct<sizeof(uint64_t),
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base::AlignedUint64,
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base::AlignedPointer,
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base::AlignedUint64,
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base::AlignedUint64> {
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enum class Index : size_t {
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CALL_FIELD_INDEX = 0,
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NATIVE_POINTER_OR_BYTECODE_ARRAY_INDEX,
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LITERAL_INFO_INDEX,
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EXTRA_LITERAL_INFO_INDEX,
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NUM_OF_MEMBERS
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};
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static_assert(static_cast<size_t>(Index::NUM_OF_MEMBERS) == NumOfTypes);
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2022-08-30 13:43:46 +00:00
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static constexpr uint8_t INVALID_IC_SLOT = 0xFFU;
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static constexpr uint16_t MAX_SLOT_SIZE = 0xFFFFU;
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MethodLiteral(const JSPandaFile *jsPandaFile, EntityId fileId);
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MethodLiteral() = delete;
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~MethodLiteral() = default;
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MethodLiteral(const MethodLiteral &) = delete;
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MethodLiteral(MethodLiteral &&) = delete;
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MethodLiteral &operator=(const MethodLiteral &) = delete;
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MethodLiteral &operator=(MethodLiteral &&) = delete;
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static constexpr size_t VREGS_ARGS_NUM_BITS = 28; // 28: maximum 268,435,455
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using HaveThisBit = BitField<bool, 0, 1>; // offset 0
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using HaveNewTargetBit = HaveThisBit::NextFlag; // offset 1
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using HaveExtraBit = HaveNewTargetBit::NextFlag; // offset 2
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using HaveFuncBit = HaveExtraBit::NextFlag; // offset 3
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using NumVregsBits = HaveFuncBit::NextField<uint32_t, VREGS_ARGS_NUM_BITS>; // offset 4-31
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using NumArgsBits = NumVregsBits::NextField<uint32_t, VREGS_ARGS_NUM_BITS>; // offset 32-59
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using IsNativeBit = NumArgsBits::NextFlag; // offset 60
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using IsAotCodeBit = IsNativeBit::NextFlag; // offset 61
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using IsFastBuiltinBit = IsAotCodeBit::NextFlag; // offset 62
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uint64_t GetCallField() const
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{
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return callField_;
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}
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void SetNativeBit(bool isNative)
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{
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callField_ = IsNativeBit::Update(callField_, isNative);
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}
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void SetAotCodeBit(bool isCompiled)
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{
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callField_ = IsAotCodeBit::Update(callField_, isCompiled);
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}
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void InitializeCallField(const JSPandaFile *jsPandaFile, uint32_t numVregs, uint32_t numArgs);
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bool HaveThisWithCallField() const
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{
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return HaveThisBit::Decode(callField_);
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}
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bool HaveNewTargetWithCallField() const
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{
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return HaveNewTargetBit::Decode(callField_);
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}
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bool HaveExtraWithCallField() const
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{
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return HaveExtraBit::Decode(callField_);
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}
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bool HaveFuncWithCallField() const
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{
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return HaveFuncBit::Decode(callField_);
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}
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bool IsNativeWithCallField() const
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{
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return IsNativeBit::Decode(callField_);
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}
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bool IsAotWithCallField() const
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{
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return IsAotCodeBit::Decode(callField_);
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}
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uint32_t GetNumArgsWithCallField() const
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{
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return NumArgsBits::Decode(callField_);
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}
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uint32_t GetNumArgs() const
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{
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return GetNumArgsWithCallField() + HaveFuncWithCallField() +
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HaveNewTargetWithCallField() + HaveThisWithCallField();
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}
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static uint64_t SetNumArgsWithCallField(uint64_t callField, uint32_t numargs)
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{
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return NumArgsBits::Update(callField, numargs);
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}
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static uint64_t SetNativeBit(uint64_t callField, bool isNative)
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{
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return IsNativeBit::Update(callField, isNative);
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}
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static uint64_t SetAotCodeBit(uint64_t callField, bool isCompiled)
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{
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return IsAotCodeBit::Update(callField, isCompiled);
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}
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static uint64_t SetFastBuiltinBit(uint64_t callField, bool isFastBuiltin)
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{
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return IsFastBuiltinBit::Update(callField, isFastBuiltin);
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}
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static bool HaveThisWithCallField(uint64_t callField)
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{
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return HaveThisBit::Decode(callField);
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}
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static bool HaveNewTargetWithCallField(uint64_t callField)
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{
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return HaveNewTargetBit::Decode(callField);
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}
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static bool HaveExtraWithCallField(uint64_t callField)
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{
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return HaveExtraBit::Decode(callField);
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}
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static bool HaveFuncWithCallField(uint64_t callField)
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{
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return HaveFuncBit::Decode(callField);
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}
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static bool IsNativeWithCallField(uint64_t callField)
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{
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return IsNativeBit::Decode(callField);
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}
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static bool IsAotWithCallField(uint64_t callField)
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{
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return IsAotCodeBit::Decode(callField);
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}
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static bool OnlyHaveThisWithCallField(uint64_t callField)
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{
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return (callField & CALL_TYPE_MASK) == 1; // 1: the first bit of callFiled is HaveThisBit
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}
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static bool OnlyHaveNewTagetAndThisWithCallField(uint64_t callField)
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{
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return (callField & CALL_TYPE_MASK) == 0b11; // the first two bit of callFiled is `This` and `NewTarget`
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}
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static uint32_t GetNumVregsWithCallField(uint64_t callField)
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{
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return NumVregsBits::Decode(callField);
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}
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static uint32_t GetNumArgsWithCallField(uint64_t callField)
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{
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return NumArgsBits::Decode(callField);
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}
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static constexpr size_t METHOD_ARGS_NUM_BITS = 16;
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static constexpr size_t METHOD_ARGS_METHODID_BITS = 32;
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static constexpr size_t METHOD_SLOT_SIZE_BITS = 16;
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using HotnessCounterBits = BitField<int16_t, 0, METHOD_ARGS_NUM_BITS>; // offset 0-15
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using MethodIdBits = HotnessCounterBits::NextField<uint32_t, METHOD_ARGS_METHODID_BITS>; // offset 16-47
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using SlotSizeBits = MethodIdBits::NextField<uint16_t, METHOD_SLOT_SIZE_BITS>; // offset 48-63
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static constexpr size_t BUILTINID_NUM_BITS = 8;
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static constexpr size_t FUNCTION_KIND_NUM_BITS = 4;
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using BuiltinIdBits = BitField<uint8_t, 0, BUILTINID_NUM_BITS>; // offset 0-7
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using FunctionKindBits = BuiltinIdBits::NextField<FunctionKind, FUNCTION_KIND_NUM_BITS>; // offset 8-11
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inline NO_THREAD_SANITIZE void SetHotnessCounter(int16_t counter)
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{
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literalInfo_ = HotnessCounterBits::Update(literalInfo_, counter);
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}
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EntityId GetMethodId() const
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{
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return EntityId(MethodIdBits::Decode(literalInfo_));
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}
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void SetMethodId(EntityId methodId)
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{
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literalInfo_ = MethodIdBits::Update(literalInfo_, methodId.GetOffset());
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}
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2022-08-30 13:43:46 +00:00
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uint16_t GetSlotSize() const
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{
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return SlotSizeBits::Decode(literalInfo_);
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}
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2022-08-30 13:43:46 +00:00
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uint8_t UpdateSlotSizeWith8Bit(uint16_t size)
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{
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uint16_t start = GetSlotSize();
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uint32_t end = start + size;
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// ic overflow
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if (end >= INVALID_IC_SLOT) {
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if (GetSlotSize() < INVALID_IC_SLOT + 1) {
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literalInfo_ = SlotSizeBits::Update(literalInfo_, INVALID_IC_SLOT + 1);
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}
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return INVALID_IC_SLOT;
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}
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literalInfo_ = SlotSizeBits::Update(literalInfo_, static_cast<uint8_t>(end));
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return start;
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}
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2022-08-26 12:40:41 +00:00
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void SetFunctionKind(FunctionKind kind)
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{
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extraLiteralInfo_ = FunctionKindBits::Update(extraLiteralInfo_, kind);
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}
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FunctionKind GetFunctionKind() const
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{
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return static_cast<FunctionKind>(FunctionKindBits::Decode(extraLiteralInfo_));
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}
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2022-08-16 13:05:02 +00:00
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static inline int16_t GetHotnessCounter(uint64_t literalInfo)
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{
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return HotnessCounterBits::Decode(literalInfo);
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}
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static uint64_t SetHotnessCounter(uint64_t literalInfo, int16_t counter)
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{
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return HotnessCounterBits::Update(literalInfo, counter);
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}
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static EntityId GetMethodId(uint64_t literalInfo)
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{
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return EntityId(MethodIdBits::Decode(literalInfo));
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}
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static uint8_t GetSlotSize(uint64_t literalInfo)
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{
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return SlotSizeBits::Decode(literalInfo);
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}
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static uint8_t GetBuiltinId(uint64_t literalInfo)
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{
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return BuiltinIdBits::Decode(literalInfo);
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}
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static uint64_t SetBuiltinId(uint64_t literalInfo, uint8_t id)
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{
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return BuiltinIdBits::Update(literalInfo, id);
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}
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2022-08-23 01:56:32 +00:00
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static uint32_t PUBLIC_API GetNumVregs(const JSPandaFile *jsPandaFile, const MethodLiteral *methodLiteral);
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static panda_file::File::StringData GetName(const JSPandaFile *jsPandaFile, EntityId methodId);
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static const char * PUBLIC_API GetMethodName(const JSPandaFile *jsPandaFile, EntityId methodId);
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static std::string PUBLIC_API ParseFunctionName(const JSPandaFile *jsPandaFile, EntityId methodId);
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static uint32_t GetCodeSize(const JSPandaFile *jsPandaFile, EntityId methodId);
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const uint8_t *GetBytecodeArray() const
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{
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return reinterpret_cast<const uint8_t *>(nativePointerOrBytecodeArray_);
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}
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const void* GetNativePointer() const
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{
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return nativePointerOrBytecodeArray_;
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}
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uint64_t GetLiteralInfo() const
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{
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return literalInfo_;
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}
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2022-08-26 12:40:41 +00:00
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uint64_t GetExtraLiteralInfo() const
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{
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return extraLiteralInfo_;
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}
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alignas(EAS) uint64_t callField_ {0ULL};
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// Native method decides this filed is NativePointer or BytecodeArray pointer.
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alignas(EAS) const void *nativePointerOrBytecodeArray_ {nullptr};
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// hotnessCounter, methodId and slotSize are encoded in literalInfo_.
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alignas(EAS) uint64_t literalInfo_ {0ULL};
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// BuiltinId, FunctionKind are encoded in extraLiteralInfo_.
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alignas(EAS) uint64_t extraLiteralInfo_ {0ULL};
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};
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STATIC_ASSERT_EQ_ARCH(sizeof(MethodLiteral), MethodLiteral::SizeArch32, MethodLiteral::SizeArch64);
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} // namespace panda::ecmascript
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#endif // ECMASCRIPT_METHOD_LITERAL_H
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