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Introduce machine-dependent stack adjustment.

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This commit is contained in:
chriseth
2017-06-08 15:52:45 +02:00
parent 64ddb176bb
commit fefd3b866d
3 changed files with 28 additions and 15 deletions
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libsolidity/inlineasm/AsmAnalysis.cpp
+2 -4
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@@ -203,8 +203,7 @@ bool AsmAnalyzer::operator()(assembly::FunctionDefinition const& _funDef)
}
int const stackHeight = m_stackHeight;
// 1 for return label, depends on VM version
m_stackHeight = 1 + _funDef.arguments.size() + _funDef.returns.size();
m_stackHeight = _funDef.arguments.size() + _funDef.returns.size();
bool success = (*this)(_funDef.body);
@@ -258,11 +257,10 @@ bool AsmAnalyzer::operator()(assembly::FunctionCall const& _funCall)
success = false;
}
}
m_stackHeight += 1; // Return label, but depends on backend
for (auto const& arg: _funCall.arguments | boost::adaptors::reversed)
if (!expectExpression(arg))
success = false;
m_stackHeight += int(returns) - int(arguments) - 1; // Return label, but depends on backend
m_stackHeight += int(returns) - int(arguments);
m_info.stackHeightInfo[&_funCall] = m_stackHeight;
return success;
}