solidity/libyul/backends/evm/AsmCodeGen.h

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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
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* Adaptor between the abstract assembly and eth assembly.
*/
#pragma once
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#include <libyul/backends/evm/AbstractAssembly.h>
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#include <libyul/AsmAnalysis.h>
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#include <liblangutil/SourceLocation.h>
#include <functional>
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namespace solidity::evmasm
{
class Assembly;
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class AssemblyItem;
}
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namespace solidity::yul
{
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struct Block;
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class EthAssemblyAdapter: public AbstractAssembly
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{
public:
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explicit EthAssemblyAdapter(evmasm::Assembly& _assembly);
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void setSourceLocation(langutil::SourceLocation const& _location) override;
int stackHeight() const override;
void setStackHeight(int height) override;
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void appendInstruction(evmasm::Instruction _instruction) override;
void appendConstant(u256 const& _constant) override;
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void appendLabel(LabelID _labelId) override;
void appendLabelReference(LabelID _labelId) override;
size_t newLabelId() override;
size_t namedLabel(std::string const& _name) override;
void appendLinkerSymbol(std::string const& _linkerSymbol) override;
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void appendJump(int _stackDiffAfter, JumpType _jumpType) override;
void appendJumpTo(LabelID _labelId, int _stackDiffAfter, JumpType _jumpType) override;
void appendJumpToIf(LabelID _labelId, JumpType _jumpType) override;
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void appendBeginsub(LabelID, int) override;
void appendJumpsub(LabelID, int, int) override;
void appendReturnsub(int, int) override;
void appendAssemblySize() override;
std::pair<std::shared_ptr<AbstractAssembly>, SubID> createSubAssembly() override;
void appendDataOffset(SubID _sub) override;
void appendDataSize(SubID _sub) override;
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SubID appendData(bytes const& _data) override;
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void appendImmutable(std::string const& _identifier) override;
void appendImmutableAssignment(std::string const& _identifier) override;
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private:
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static LabelID assemblyTagToIdentifier(evmasm::AssemblyItem const& _tag);
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void appendJumpInstruction(evmasm::Instruction _instruction, JumpType _jumpType);
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evmasm::Assembly& m_assembly;
std::map<SubID, u256> m_dataHashBySubId;
size_t m_nextDataCounter = std::numeric_limits<size_t>::max() / 2;
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};
class CodeGenerator
{
public:
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/// Performs code generation and appends generated to _assembly.
static void assemble(
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Block const& _parsedData,
AsmAnalysisInfo& _analysisInfo,
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evmasm::Assembly& _assembly,
langutil::EVMVersion _evmVersion,
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ExternalIdentifierAccess const& _identifierAccess = ExternalIdentifierAccess(),
bool _useNamedLabelsForFunctions = false,
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bool _optimizeStackAllocation = false
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);
};
}