NEXT
CASE(BALANCE)
{
m_runGas = m_rev >= EVMC_TANGERINE_WHISTLE ? 400 : 20;
ON_OP();
updateIOGas();
evmc_address address = toEvmC(asAddress(m_SP[0]));
m_SPP[0] = fromEvmC(m_context->host->get_balance(m_context, &address));
}
NEXT
CASE(EXTCODESIZE)
{
m_runGas = m_rev >= EVMC_TANGERINE_WHISTLE ? 700 : 20;
ON_OP();
updateIOGas();
evmc_address address = toEvmC(asAddress(m_SP[0]));
m_SPP[0] = m_context->host->get_code_size(m_context, &address);
}
NEXT
CASE(EXTCODEHASH)
{
ON_OP();
if (m_rev < EVMC_CONSTANTINOPLE)
throwBadInstruction();
updateIOGas();
evmc_address address = toEvmC(asAddress(m_SP[0]));
m_SPP[0] = fromEvmC(m_context->host->get_code_hash(m_context, &address));
}
NEXT
CASE(EXTCODECOPY)
{
ON_OP();
m_runGas = m_rev >= EVMC_TANGERINE_WHISTLE ? 700 : 20;
uint64_t copyMemSize = toInt63(m_SP[3]);
m_copyMemSize = copyMemSize;
updateMem(memNeed(m_SP[1], m_SP[3]));
updateIOGas();
evmc_address address = toEvmC(asAddress(m_SP[0]));
size_t memoryOffset = static_cast<size_t>(m_SP[1]);
constexpr size_t codeOffsetMax = std::numeric_limits<size_t>::max();
size_t codeOffset =
m_SP[2] > codeOffsetMax ? codeOffsetMax : static_cast<size_t>(m_SP[2]);
size_t size = static_cast<size_t>(copyMemSize);
size_t numCopied = m_context->host->copy_code(
m_context, &address, codeOffset, &m_mem[memoryOffset], size);
std::fill_n(&m_mem[memoryOffset + numCopied], size - numCopied, 0);
}
inline void resetAddress() {
asAddress().~Address();
value_type = Type_undefined;
}