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ethminer
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Avoid double calling of require()

cl-refactor
Christoph Jentzsch 10 years ago
parent
0f353285df
commit
c61131a0c3
1 changed files with 0 additions and 50 deletions
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  1. 50
      libevm/VM.h

50
libevm/VM.h
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@ -170,11 +170,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
case Instruction::CALL:
require(7);
runGas = c_callGas + m_stack[m_stack.size() - 1];
newTempSize = std::max(memNeed(m_stack[m_stack.size() - 6], m_stack[m_stack.size() - 7]), memNeed(m_stack[m_stack.size() - 4], m_stack[m_stack.size() - 5]));
break;
case Instruction::CALLCODE:
require(7);
runGas = c_callGas + m_stack[m_stack.size() - 1];
@ -337,44 +332,36 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
{
case Instruction::ADD:
//pops two items and pushes S[-1] + S[-2] mod 2^256.
require(2);
m_stack[m_stack.size() - 2] += m_stack.back();
m_stack.pop_back();
break;
case Instruction::MUL:
//pops two items and pushes S[-1] * S[-2] mod 2^256.
require(2);
m_stack[m_stack.size() - 2] *= m_stack.back();
m_stack.pop_back();
break;
case Instruction::SUB:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() - m_stack[m_stack.size() - 2];
m_stack.pop_back();
break;
case Instruction::DIV:
require(2);
m_stack[m_stack.size() - 2] = m_stack[m_stack.size() - 2] ? m_stack.back() / m_stack[m_stack.size() - 2] : 0;
m_stack.pop_back();
break;
case Instruction::SDIV:
require(2);
m_stack[m_stack.size() - 2] = m_stack[m_stack.size() - 2] ? s2u(u2s(m_stack.back()) / u2s(m_stack[m_stack.size() - 2])) : 0;
m_stack.pop_back();
break;
case Instruction::MOD:
require(2);
m_stack[m_stack.size() - 2] = m_stack[m_stack.size() - 2] ? m_stack.back() % m_stack[m_stack.size() - 2] : 0;
m_stack.pop_back();
break;
case Instruction::SMOD:
require(2);
m_stack[m_stack.size() - 2] = m_stack[m_stack.size() - 2] ? s2u(u2s(m_stack.back()) % u2s(m_stack[m_stack.size() - 2])) : 0;
m_stack.pop_back();
break;
case Instruction::EXP:
{
require(2);
auto base = m_stack.back();
auto expon = m_stack[m_stack.size() - 2];
m_stack.pop_back();
@ -382,73 +369,59 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
}
case Instruction::NEG:
require(1);
m_stack.back() = ~(m_stack.back() - 1);
break;
case Instruction::LT:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() < m_stack[m_stack.size() - 2] ? 1 : 0;
m_stack.pop_back();
break;
case Instruction::GT:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() > m_stack[m_stack.size() - 2] ? 1 : 0;
m_stack.pop_back();
break;
case Instruction::SLT:
require(2);
m_stack[m_stack.size() - 2] = u2s(m_stack.back()) < u2s(m_stack[m_stack.size() - 2]) ? 1 : 0;
m_stack.pop_back();
break;
case Instruction::SGT:
require(2);
m_stack[m_stack.size() - 2] = u2s(m_stack.back()) > u2s(m_stack[m_stack.size() - 2]) ? 1 : 0;
m_stack.pop_back();
break;
case Instruction::EQ:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() == m_stack[m_stack.size() - 2] ? 1 : 0;
m_stack.pop_back();
break;
case Instruction::NOT:
require(1);
m_stack.back() = m_stack.back() ? 0 : 1;
break;
case Instruction::AND:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() & m_stack[m_stack.size() - 2];
m_stack.pop_back();
break;
case Instruction::OR:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() | m_stack[m_stack.size() - 2];
m_stack.pop_back();
break;
case Instruction::XOR:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() ^ m_stack[m_stack.size() - 2];
m_stack.pop_back();
break;
case Instruction::BYTE:
require(2);
m_stack[m_stack.size() - 2] = m_stack.back() < 32 ? (m_stack[m_stack.size() - 2] >> (unsigned)(8 * (31 - m_stack.back()))) & 0xff : 0;
m_stack.pop_back();
break;
case Instruction::ADDMOD:
require(3);
m_stack[m_stack.size() - 3] = u256((bigint(m_stack.back()) + bigint(m_stack[m_stack.size() - 2])) % m_stack[m_stack.size() - 3]);
m_stack.pop_back();
m_stack.pop_back();
break;
case Instruction::MULMOD:
require(3);
m_stack[m_stack.size() - 3] = u256((bigint(m_stack.back()) * bigint(m_stack[m_stack.size() - 2])) % m_stack[m_stack.size() - 3]);
m_stack.pop_back();
m_stack.pop_back();
break;
case Instruction::SHA3:
{
require(2);
unsigned inOff = (unsigned)m_stack.back();
m_stack.pop_back();
unsigned inSize = (unsigned)m_stack.back();
@ -464,7 +437,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
case Instruction::BALANCE:
{
require(1);
m_stack.back() = _ext.balance(asAddress(m_stack.back()));
break;
}
@ -476,7 +448,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
case Instruction::CALLDATALOAD:
{
require(1);
if ((unsigned)m_stack.back() + 31 < _ext.data.size())
m_stack.back() = (u256)*(h256 const*)(_ext.data.data() + (unsigned)m_stack.back());
else
@ -493,7 +464,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
case Instruction::CALLDATACOPY:
{
require(3);
unsigned mf = (unsigned)m_stack.back();
m_stack.pop_back();
unsigned cf = (unsigned)m_stack.back();
@ -510,7 +480,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
case Instruction::CODECOPY:
{
require(3);
unsigned mf = (unsigned)m_stack.back();
m_stack.pop_back();
unsigned cf = (unsigned)m_stack.back();
@ -523,12 +492,10 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
}
case Instruction::EXTCODESIZE:
require(1);
m_stack.back() = _ext.codeAt(asAddress(m_stack.back())).size();
break;
case Instruction::EXTCODECOPY:
{
require(4);
Address a = asAddress(m_stack.back());
m_stack.pop_back();
unsigned mf = (unsigned)m_stack.back();
@ -604,7 +571,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
}
case Instruction::POP:
require(1);
m_stack.pop_back();
break;
case Instruction::DUP1:
@ -625,7 +591,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
case Instruction::DUP16:
{
auto n = 1 + (int)inst - (int)Instruction::DUP1;
require(n);
m_stack.push_back(m_stack[m_stack.size() - n]);
break;
}
@ -647,7 +612,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
case Instruction::SWAP16:
{
unsigned n = (int)inst - (int)Instruction::SWAP1 + 2;
require(n);
auto d = m_stack.back();
m_stack.back() = m_stack[m_stack.size() - n];
m_stack[m_stack.size() - n] = d;
@ -655,13 +619,11 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
}
case Instruction::MLOAD:
{
require(1);
m_stack.back() = (u256)*(h256 const*)(m_temp.data() + (unsigned)m_stack.back());
break;
}
case Instruction::MSTORE:
{
require(2);
*(h256*)&m_temp[(unsigned)m_stack.back()] = (h256)m_stack[m_stack.size() - 2];
m_stack.pop_back();
m_stack.pop_back();
@ -669,31 +631,26 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
}
case Instruction::MSTORE8:
{
require(2);
m_temp[(unsigned)m_stack.back()] = (byte)(m_stack[m_stack.size() - 2] & 0xff);
m_stack.pop_back();
m_stack.pop_back();
break;
}
case Instruction::SLOAD:
require(1);
m_stack.back() = _ext.store(m_stack.back());
break;
case Instruction::SSTORE:
require(2);
_ext.setStore(m_stack.back(), m_stack[m_stack.size() - 2]);
m_stack.pop_back();
m_stack.pop_back();
break;
case Instruction::JUMP:
require(1);
nextPC = m_stack.back();
if (nextPC && (Instruction)_ext.getCode(nextPC - 1) != Instruction::JUMPDEST)
BOOST_THROW_EXCEPTION(BadJumpDestination());
m_stack.pop_back();
break;
case Instruction::JUMPI:
require(2);
if (m_stack[m_stack.size() - 2])
{
nextPC = m_stack.back();
@ -716,8 +673,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
break;
case Instruction::CREATE:
{
require(3);
u256 endowment = m_stack.back();
m_stack.pop_back();
unsigned initOff = (unsigned)m_stack.back();
@ -739,8 +694,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
case Instruction::CALL:
case Instruction::CALLCODE:
{
require(7);
u256 gas = m_stack.back();
m_stack.pop_back();
Address receiveAddress = asAddress(m_stack.back());
@ -772,8 +725,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
}
case Instruction::RETURN:
{
require(2);
unsigned b = (unsigned)m_stack.back();
m_stack.pop_back();
unsigned s = (unsigned)m_stack.back();
@ -783,7 +734,6 @@ template <class Ext> dev::bytesConstRef dev::eth::VM::go(Ext& _ext, OnOpFunc con
}
case Instruction::SUICIDE:
{
require(1);
Address dest = asAddress(m_stack.back());
_ext.suicide(dest);
// ...follow through to...

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