diff options
Diffstat (limited to 'libevmasm/GasMeter.cpp')
| -rw-r--r-- | libevmasm/GasMeter.cpp | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/libevmasm/GasMeter.cpp b/libevmasm/GasMeter.cpp index caa06fc0..d98b3efa 100644 --- a/libevmasm/GasMeter.cpp +++ b/libevmasm/GasMeter.cpp @@ -101,8 +101,8 @@ GasMeter::GasConsumption GasMeter::estimateMax(AssemblyItem const& _item, bool _ break; case Instruction::KECCAK256: gas = GasCosts::keccak256Gas; - gas += wordGas(GasCosts::keccak256WordGas, m_state->relativeStackElement(-1)); gas += memoryGas(0, -1); + gas += wordGas(GasCosts::keccak256WordGas, m_state->relativeStackElement(-1)); break; case Instruction::CALLDATACOPY: case Instruction::CODECOPY: @@ -114,6 +114,9 @@ GasMeter::GasConsumption GasMeter::estimateMax(AssemblyItem const& _item, bool _ case Instruction::EXTCODESIZE: gas = GasCosts::extCodeGas(m_evmVersion); break; + case Instruction::EXTCODEHASH: + gas = GasCosts::balanceGas(m_evmVersion); + break; case Instruction::EXTCODECOPY: gas = GasCosts::extCodeGas(m_evmVersion); gas += memoryGas(-1, -3); @@ -125,8 +128,7 @@ GasMeter::GasConsumption GasMeter::estimateMax(AssemblyItem const& _item, bool _ case Instruction::LOG3: case Instruction::LOG4: { - unsigned n = unsigned(_item.instruction()) - unsigned(Instruction::LOG0); - gas = GasCosts::logGas + GasCosts::logTopicGas * n; + gas = GasCosts::logGas + GasCosts::logTopicGas * getLogNumber(_item.instruction()); gas += memoryGas(0, -1); if (u256 const* value = classes.knownConstant(m_state->relativeStackElement(-1))) gas += GasCosts::logDataGas * (*value); @@ -215,7 +217,7 @@ GasMeter::GasConsumption GasMeter::memoryGas(ExpressionClasses::Id _position) if (!value) return GasConsumption::infinite(); if (*value < m_largestMemoryAccess) - return GasConsumption(u256(0)); + return GasConsumption(0); u256 previous = m_largestMemoryAccess; m_largestMemoryAccess = *value; auto memGas = [=](u256 const& pos) -> u256 @@ -258,4 +260,16 @@ unsigned GasMeter::runGas(Instruction _instruction) return 0; } - +u256 GasMeter::dataGas(bytes const& _data, bool _inCreation) +{ + bigint gas = 0; + if (_inCreation) + { + for (auto b: _data) + gas += (b != 0) ? GasCosts::txDataNonZeroGas : GasCosts::txDataZeroGas; + } + else + gas = bigint(GasCosts::createDataGas) * _data.size(); + assertThrow(gas < bigint(u256(-1)), OptimizerException, "Gas cost exceeds 256 bits."); + return u256(gas); +} |