package vm import ( "math/big" "github.com/ethereum/go-ethereum/ethlog" "github.com/ethereum/go-ethereum/ethutil" ) var vmlogger = ethlog.NewLogger("VM") type Type int const ( StandardVmTy Type = iota DebugVmTy MaxVmTy ) var ( GasStep = big.NewInt(1) GasSha = big.NewInt(20) GasSLoad = big.NewInt(20) GasSStore = big.NewInt(100) GasBalance = big.NewInt(20) GasCreate = big.NewInt(100) GasCall = big.NewInt(20) GasMemory = big.NewInt(1) GasData = big.NewInt(5) GasTx = big.NewInt(500) GasLog = big.NewInt(32) Pow256 = ethutil.BigPow(2, 256) LogTyPretty byte = 0x1 LogTyDiff byte = 0x2 U256 = ethutil.U256 S256 = ethutil.S256 ) const MaxCallDepth = 1025 func calcMemSize(off, l *big.Int) *big.Int { if l.Cmp(ethutil.Big0) == 0 { return ethutil.Big0 } return new(big.Int).Add(off, l) } // Simple helper func u256(n int64) *big.Int { return big.NewInt(n) } // Mainly used for print variables and passing to Print* func toValue(val *big.Int) interface{} { // Let's assume a string on right padded zero's b := val.Bytes() if b[0] != 0 && b[len(b)-1] == 0x0 && b[len(b)-2] == 0x0 { return string(b) } return val }