mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Component that transforms internal Wasm representation to binary.
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*/
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#pragma once
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#include <libyul/backends/wasm/WasmAST.h>
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#include <libsolutil/Common.h>
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#include <vector>
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#include <stack>
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namespace solidity::yul::wasm
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{
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/**
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* Web assembly to binary transform.
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*/
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class BinaryTransform
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{
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public:
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static bytes run(Module const& _module);
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bytes operator()(wasm::Literal const& _literal);
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bytes operator()(wasm::StringLiteral const& _literal);
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bytes operator()(wasm::LocalVariable const& _identifier);
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bytes operator()(wasm::GlobalVariable const& _identifier);
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bytes operator()(wasm::BuiltinCall const& _builinCall);
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bytes operator()(wasm::FunctionCall const& _functionCall);
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bytes operator()(wasm::LocalAssignment const& _assignment);
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bytes operator()(wasm::GlobalAssignment const& _assignment);
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bytes operator()(wasm::If const& _if);
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bytes operator()(wasm::Loop const& _loop);
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bytes operator()(wasm::Branch const& _branch);
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bytes operator()(wasm::BranchIf const& _branchIf);
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bytes operator()(wasm::Return const& _return);
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bytes operator()(wasm::Block const& _block);
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bytes operator()(wasm::FunctionDefinition const& _function);
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private:
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BinaryTransform(
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std::map<std::string, size_t> _globalIDs,
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std::map<std::string, size_t> _functionIDs,
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std::map<std::string, size_t> _functionTypes,
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std::map<std::string, std::pair<size_t, size_t>> _subModulePosAndSize
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):
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m_globalIDs(std::move(_globalIDs)),
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m_functionIDs(std::move(_functionIDs)),
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m_functionTypes(std::move(_functionTypes)),
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m_subModulePosAndSize(std::move(_subModulePosAndSize))
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{}
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using Type = std::pair<std::vector<std::uint8_t>, std::vector<std::uint8_t>>;
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static Type typeOf(wasm::FunctionImport const& _import);
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static Type typeOf(wasm::FunctionDefinition const& _funDef);
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static uint8_t encodeType(wasm::Type _type);
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static std::vector<uint8_t> encodeTypes(std::vector<wasm::Type> const& _types);
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static std::vector<uint8_t> encodeTypes(wasm::TypedNameList const& _typedNameList);
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static std::map<Type, std::vector<std::string>> typeToFunctionMap(
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std::vector<wasm::FunctionImport> const& _imports,
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std::vector<wasm::FunctionDefinition> const& _functions
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);
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static std::map<std::string, size_t> enumerateGlobals(Module const& _module);
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static std::map<std::string, size_t> enumerateFunctions(Module const& _module);
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static std::map<std::string, size_t> enumerateFunctionTypes(
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std::map<Type, std::vector<std::string>> const& _typeToFunctionMap
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);
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static bytes typeSection(std::map<Type, std::vector<std::string>> const& _typeToFunctionMap);
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static bytes importSection(
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std::vector<wasm::FunctionImport> const& _imports,
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std::map<std::string, size_t> const& _functionTypes
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);
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static bytes functionSection(
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std::vector<wasm::FunctionDefinition> const& _functions,
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std::map<std::string, size_t> const& _functionTypes
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);
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static bytes memorySection();
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static bytes globalSection(std::vector<wasm::GlobalVariableDeclaration> const& _globals);
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static bytes exportSection(std::map<std::string, size_t> const& _functionIDs);
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static bytes customSection(std::string const& _name, bytes _data);
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bytes codeSection(std::vector<wasm::FunctionDefinition> const& _functions);
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bytes visit(std::vector<wasm::Expression> const& _expressions);
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bytes visitReversed(std::vector<wasm::Expression> const& _expressions);
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bytes encodeLabelIdx(std::string const& _label) const;
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static bytes encodeName(std::string const& _name);
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std::map<std::string, size_t> const m_globalIDs;
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std::map<std::string, size_t> const m_functionIDs;
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std::map<std::string, size_t> const m_functionTypes;
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/// The map of submodules, where the pair refers to the [offset, length]. The offset is
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/// an absolute offset within the resulting assembled bytecode.
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std::map<std::string, std::pair<size_t, size_t>> const m_subModulePosAndSize;
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std::map<std::string, size_t> m_locals;
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std::vector<std::string> m_labels;
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};
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}
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