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-rw-r--r--libjulia/backends/evm/EVMAssembly.h97
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diff --git a/libjulia/backends/evm/EVMAssembly.h b/libjulia/backends/evm/EVMAssembly.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/>.
-*/
-/**
- * Assembly interface for EVM and EVM1.5.
- */
-
-#pragma once
-
-#include <libjulia/backends/evm/AbstractAssembly.h>
-
-#include <libevmasm/LinkerObject.h>
-
-#include <map>
-
-namespace dev
-{
-namespace julia
-{
-
-class EVMAssembly: public AbstractAssembly
-{
-public:
- explicit EVMAssembly(bool _evm15 = false): m_evm15(_evm15) { }
- virtual ~EVMAssembly() {}
-
- /// Set a new source location valid starting from the next instruction.
- virtual void setSourceLocation(SourceLocation const& _location) override;
- /// Retrieve the current height of the stack. This does not have to be zero
- /// at the beginning.
- virtual int stackHeight() const override { return m_stackHeight; }
- /// Append an EVM instruction.
- virtual void appendInstruction(solidity::Instruction _instruction) override;
- /// Append a constant.
- virtual void appendConstant(u256 const& _constant) override;
- /// Append a label.
- virtual void appendLabel(LabelID _labelId) override;
- /// Append a label reference.
- virtual void appendLabelReference(LabelID _labelId) override;
- /// Generate a new unique label.
- virtual LabelID newLabelId() override;
- /// Returns a label identified by the given name. Creates it if it does not yet exist.
- virtual LabelID namedLabel(std::string const& _name) override;
- /// Append a reference to a to-be-linked symobl.
- /// Currently, we assume that the value is always a 20 byte number.
- virtual void appendLinkerSymbol(std::string const& _name) override;
-
- /// Append a jump instruction.
- /// @param _stackDiffAfter the stack adjustment after this instruction.
- virtual void appendJump(int _stackDiffAfter) override;
- /// Append a jump-to-immediate operation.
- virtual void appendJumpTo(LabelID _labelId, int _stackDiffAfter) override;
- /// Append a jump-to-if-immediate operation.
- virtual void appendJumpToIf(LabelID _labelId) override;
- /// Start a subroutine.
- virtual void appendBeginsub(LabelID _labelId, int _arguments) override;
- /// Call a subroutine.
- virtual void appendJumpsub(LabelID _labelId, int _arguments, int _returns) override;
- /// Return from a subroutine.
- virtual void appendReturnsub(int _returns, int _stackDiffAfter) override;
-
- /// Append the assembled size as a constant.
- virtual void appendAssemblySize() override;
-
- /// Resolves references inside the bytecode and returns the linker object.
- eth::LinkerObject finalize();
-
-private:
- void setLabelToCurrentPosition(AbstractAssembly::LabelID _labelId);
- void appendLabelReferenceInternal(AbstractAssembly::LabelID _labelId);
- void updateReference(size_t pos, size_t size, u256 value);
-
- bool m_evm15 = false; ///< if true, switch to evm1.5 mode
- LabelID m_nextLabelId = 0;
- int m_stackHeight = 0;
- bytes m_bytecode;
- std::map<std::string, LabelID> m_namedLabels;
- std::map<LabelID, size_t> m_labelPositions;
- std::map<size_t, LabelID> m_labelReferences;
- std::vector<size_t> m_assemblySizePositions;
-};
-
-}
-}