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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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2016
* Code-generating part of inline assembly.
*/
#include <libsolidity/inlineasm/AsmCodeGen.h>
#include <libsolidity/inlineasm/AsmParser.h>
#include <libsolidity/inlineasm/AsmData.h>
#include <libsolidity/inlineasm/AsmScope.h>
#include <libsolidity/inlineasm/AsmAnalysis.h>
#include <libsolidity/inlineasm/AsmAnalysisInfo.h>
#include <libevmasm/Assembly.h>
#include <libevmasm/SourceLocation.h>
#include <libevmasm/Instruction.h>
#include <libjulia/backends/evm/AbstractAssembly.h>
#include <libjulia/backends/evm/EVMCodeTransform.h>
#include <libdevcore/CommonIO.h>
#include <boost/range/adaptor/reversed.hpp>
#include <boost/range/adaptor/map.hpp>
#include <boost/range/algorithm/count_if.hpp>
#include <memory>
#include <functional>
using namespace std;
using namespace dev;
using namespace dev::solidity;
using namespace dev::solidity::assembly;
class EthAssemblyAdapter: public julia::AbstractAssembly
{
public:
EthAssemblyAdapter(eth::Assembly& _assembly):
m_assembly(_assembly)
{
}
virtual void setSourceLocation(SourceLocation const& _location) override
{
m_assembly.setSourceLocation(_location);
}
virtual int stackHeight() const override { return m_assembly.deposit(); }
virtual void appendInstruction(solidity::Instruction _instruction) override
{
m_assembly.append(_instruction);
}
virtual void appendConstant(u256 const& _constant) override
{
m_assembly.append(_constant);
}
/// Append a label.
virtual void appendLabel(LabelID _labelId) override
{
m_assembly.append(eth::AssemblyItem(eth::Tag, _labelId));
}
/// Append a label reference.
virtual void appendLabelReference(LabelID _labelId) override
{
m_assembly.append(eth::AssemblyItem(eth::PushTag, _labelId));
}
virtual size_t newLabelId() override
{
return assemblyTagToIdentifier(m_assembly.newTag());
}
virtual void appendLinkerSymbol(std::string const& _linkerSymbol) override
{
m_assembly.appendLibraryAddress(_linkerSymbol);
}
virtual void appendJump(int _stackDiffAfter) override
{
appendInstruction(solidity::Instruction::JUMP);
m_assembly.adjustDeposit(_stackDiffAfter);
}
virtual void appendJumpTo(LabelID _labelId, int _stackDiffAfter) override
{
appendLabelReference(_labelId);
appendJump(_stackDiffAfter);
}
virtual void appendJumpToIf(LabelID _labelId) override
{
appendLabelReference(_labelId);
appendInstruction(solidity::Instruction::JUMPI);
}
virtual void appendBeginsub(LabelID, int) override
{
// TODO we could emulate that, though
solAssert(false, "BEGINSUB not implemented for EVM 1.0");
}
/// Call a subroutine.
virtual void appendJumpsub(LabelID, int, int) override
{
// TODO we could emulate that, though
solAssert(false, "JUMPSUB not implemented for EVM 1.0");
}
/// Return from a subroutine.
virtual void appendReturnsub(int, int) override
{
// TODO we could emulate that, though
solAssert(false, "RETURNSUB not implemented for EVM 1.0");
}
private:
LabelID assemblyTagToIdentifier(eth::AssemblyItem const& _tag) const
{
u256 id = _tag.data();
solAssert(id <= std::numeric_limits<LabelID>::max(), "Tag id too large.");
return LabelID(id);
}
eth::Assembly& m_assembly;
};
void assembly::CodeGenerator::assemble(
Block const& _parsedData,
AsmAnalysisInfo& _analysisInfo,
eth::Assembly& _assembly,
julia::ExternalIdentifierAccess const& _identifierAccess
)
{
EthAssemblyAdapter assemblyAdapter(_assembly);
julia::CodeTransform(assemblyAdapter, _analysisInfo, false, _identifierAccess)(_parsedData);
}
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