mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
109 lines
2.7 KiB
C++
109 lines
2.7 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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/**
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* Dialects for Wasm.
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*/
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#include <libyul/backends/wasm/WasmDialect.h>
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using namespace std;
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using namespace yul;
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WasmDialect::WasmDialect():
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Dialect{AsmFlavour::Strict}
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{
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for (auto const& name: {
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"i64.add",
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"i64.sub",
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"i64.mul",
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"i64.div_u",
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"i64.rem_u",
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"i64.and",
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"i64.or",
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"i64.xor",
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"i64.shl",
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"i64.shr_u",
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"i64.eq",
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"i64.ne",
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"i64.lt_u",
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"i64.gt_u",
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"i64.le_u",
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"i64.ge_u"
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})
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addFunction(name, 2, 1);
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addFunction("i64.eqz", 1, 1);
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addFunction("i64.store", 2, 0, false);
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m_functions["i64.store"_yulstring].invalidatesStorage = false;
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addFunction("i64.load", 1, 1, false);
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m_functions["i64.load"_yulstring].invalidatesStorage = false;
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m_functions["i64.load"_yulstring].invalidatesMemory = false;
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m_functions["i64.load"_yulstring].sideEffectFree = true;
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m_functions["i64.load"_yulstring].sideEffectFreeIfNoMSize = true;
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addFunction("drop", 1, 0);
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addFunction("unreachable", 0, 0, false);
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m_functions["unreachable"_yulstring].invalidatesStorage = false;
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m_functions["unreachable"_yulstring].invalidatesMemory = false;
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addFunction("datasize", 1, 4, true, true);
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addFunction("dataoffset", 1, 4, true, true);
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}
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BuiltinFunction const* WasmDialect::builtin(YulString _name) const
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{
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auto it = m_functions.find(_name);
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if (it != m_functions.end())
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return &it->second;
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else
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return nullptr;
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}
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WasmDialect const& WasmDialect::instance()
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{
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static std::unique_ptr<WasmDialect> dialect;
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static YulStringRepository::ResetCallback callback{[&] { dialect.reset(); }};
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if (!dialect)
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dialect = make_unique<WasmDialect>();
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return *dialect;
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}
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void WasmDialect::addFunction(
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string _name,
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size_t _params,
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size_t _returns,
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bool _movable,
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bool _literalArguments
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)
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{
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YulString name{move(_name)};
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BuiltinFunction& f = m_functions[name];
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f.name = name;
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f.parameters.resize(_params);
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f.returns.resize(_returns);
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f.movable = _movable;
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f.sideEffectFree = _movable;
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f.sideEffectFreeIfNoMSize = _movable;
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f.isMSize = false;
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f.invalidatesStorage = !_movable;
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f.invalidatesMemory = !_movable;
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f.literalArguments = _literalArguments;
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}
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