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Implement datasize, dataoffset and datacopy for yul interpreter.

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This commit is contained in:
chriseth
2019-05-06 16:59:47 +02:00
committed by Bhargava Shastry
parent e99efec085
commit f113f8e4a0
14 changed files with 212 additions and 12 deletions
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test/tools/yulInterpreter/EVMInstructionInterpreter.cpp
+23
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@@ -444,6 +444,29 @@ u256 EVMInstructionInterpreter::eval(
return 0;
}
u256 EVMInstructionInterpreter::evalBuiltin(YulString _name, const std::vector<u256>& _arguments)
{
if (_name == "datasize"_yulstring)
return u256(keccak256(h256(_arguments.at(0)))) & 0xfff;
else if (_name == "dataoffset"_yulstring)
return u256(keccak256(h256(_arguments.at(0) + 2))) & 0xfff;
else if (_name == "datacopy"_yulstring)
{
// This is identical to codecopy.
if (logMemoryWrite(_arguments.at(0), _arguments.at(2)))
copyZeroExtended(
m_state.memory,
m_state.code,
size_t(_arguments.at(0)),
size_t(_arguments.at(1) & size_t(-1)),
size_t(_arguments.at(2))
);
}
else
yulAssert(false, "Unknown builtin: " + _name.str());
return 0;
}
bool EVMInstructionInterpreter::logMemoryRead(u256 const& _offset, u256 const& _size)
{
return logMemory(false, _offset, _size);