solidity/libyul/backends/wasm/WasmDialect.h

65 lines
1.8 KiB
C++

/*
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/>.
*/
/**
* Dialects for Wasm.
*/
#pragma once
#include <libyul/Dialect.h>
#include <map>
namespace yul
{
class YulString;
using Type = YulString;
struct FunctionCall;
struct Object;
/**
* Yul dialect for Wasm as a backend.
*
* Builtin functions are a subset of the wasm instructions, always implicitly assuming
* unsigned 64 bit types.
*
* !This is subject to changes!
*/
struct WasmDialect: public Dialect
{
WasmDialect();
BuiltinFunction const* builtin(YulString _name) const override;
BuiltinFunction const* discardFunction() const override { return builtin("drop"_yulstring); }
BuiltinFunction const* equalityFunction() const override { return builtin("i64.eq"_yulstring); }
BuiltinFunction const* booleanNegationFunction() const override { return builtin("i64.eqz"_yulstring); }
std::set<YulString> fixedFunctionNames() const override { return {"main"_yulstring}; }
static WasmDialect const& instance();
private:
void addEthereumExternals();
void addFunction(std::string _name, size_t _params, size_t _returns, bool _movable = true, bool _literalArguments = false);
std::map<YulString, BuiltinFunction> m_functions;
};
}