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Merge pull request #10121 from ethereum/ewasm-stop

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[ewasm] Implement stop() in EVM->Ewasm translator
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chriseth 2020-10-28 12:41:17 +01:00 committed by GitHub
commit 9b353103b4
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2 changed files with 7 additions and 0 deletions
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4
libyul/backends/wasm/BinaryTransform.cpp
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@ -356,11 +356,15 @@ bytes BinaryTransform::operator()(BuiltinCall const& _call)
if (_call.functionName == "dataoffset")
{
string name = get<StringLiteral>(_call.arguments.at(0)).value;
// TODO: support the case where name refers to the current object
yulAssert(m_subModulePosAndSize.count(name), "");
return toBytes(Opcode::I64Const) + lebEncodeSigned(static_cast<int64_t>(m_subModulePosAndSize.at(name).first));
}
else if (_call.functionName == "datasize")
{
string name = get<StringLiteral>(_call.arguments.at(0)).value;
// TODO: support the case where name refers to the current object
yulAssert(m_subModulePosAndSize.count(name), "");
return toBytes(Opcode::I64Const) + lebEncodeSigned(static_cast<int64_t>(m_subModulePosAndSize.at(name).second));
}

3
libyul/backends/wasm/EVMToEwasmTranslator.cpp
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@ -1211,6 +1211,9 @@ function revert(x1, x2, x3, x4, y1, y2, y3, y4) {
function invalid() {
unreachable()
}
function stop() {
eth.finish(0:i32, 0:i32)
}
function memoryguard(x:i64) -> y1, y2, y3, y4 {
y4 := x
}