solidity/libyul/backends/wasm/WasmDialect.cpp

77 lines
1.7 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.
*/
#include <libyul/backends/wasm/WasmDialect.h>
using namespace std;
using namespace yul;
WasmDialect::WasmDialect():
Dialect{AsmFlavour::Strict}
{
for (auto const& name: {
"i64.add",
"i64.sub",
"i64.mul",
"i64.div_u",
"i64.rem_u",
"i64.and",
"i64.or",
"i64.xor",
"i64.shl",
"i64.shr_u",
"i64.eq",
"i64.ne",
"i64.lt_u",
"i64.gt_u",
"i64.le_u",
"i64.ge_u"
})
addFunction(name, 2, 1);
addFunction("i64.eqz", 1, 1);
addFunction("i64.store", 2, 0);
addFunction("i64.load", 1, 1);
addFunction("drop", 1, 0);
addFunction("unreachable", 0, 0);
}
BuiltinFunction const* WasmDialect::builtin(YulString _name) const
{
auto it = m_functions.find(_name);
if (it != m_functions.end())
return &it->second;
else
return nullptr;
}
void WasmDialect::addFunction(string _name, size_t _params, size_t _returns)
{
YulString name{move(_name)};
BuiltinFunction& f = m_functions[name];
f.name = name;
f.parameters.resize(_params);
f.returns.resize(_returns);
f.movable = false;
f.sideEffectFree = false;
f.literalArguments = false;
}