VM intermediate...

vm/common.go

@@ -0,0 +1,73 @@
+package vm
+
+import (
+	"math/big"
+)
+
+var (
+	GasStorageGet        = Big(50)
+	GasStorageAdd        = Big(20000)
+	GasStorageMod        = Big(5000)
+	GasLogBase           = Big(375)
+	GasLogTopic          = Big(375)
+	GasLogByte           = Big(8)
+	GasCreate            = Big(32000)
+	GasCreateByte        = Big(200)
+	GasCall              = Big(40)
+	GasCallValueTransfer = Big(9000)
+	GasStipend           = Big(2300)
+	GasCallNewAccount    = Big(25000)
+	GasReturn            = Big(0)
+	GasStop              = Big(0)
+	GasJumpDest          = Big(1)
+
+	RefundStorage = Big(15000)
+	RefundSuicide = Big(24000)
+
+	GasMemWord           = Big(3)
+	GasQuadCoeffDenom    = Big(512)
+	GasContractByte      = Big(200)
+	GasTransaction       = Big(21000)
+	GasTxDataNonzeroByte = Big(68)
+	GasTxDataZeroByte    = Big(4)
+	GasTx                = Big(21000)
+	GasExp               = Big(10)
+	GasExpByte           = Big(10)
+
+	GasSha3Base     = Big(30)
+	GasSha3Word     = Big(6)
+	GasSha256Base   = Big(60)
+	GasSha256Word   = Big(12)
+	GasRipemdBase   = Big(600)
+	GasRipemdWord   = Big(12)
+	GasEcrecover    = Big(3000)
+	GasIdentityBase = Big(15)
+	GasIdentityWord = Big(3)
+	GasCopyWord     = Big(3)
+
+	Pow256 = BigPow(2, 256)
+
+	LogTyPretty byte = 0x1
+	LogTyDiff   byte = 0x2
+)
+
+const MaxCallDepth = 1025
+
+func calcMemSize(off, l *big.Int) *big.Int {
+	if l.Cmp(Big0) == 0 {
+		return Big0
+	}
+
+	return new(big.Int).Add(off, l)
+}
+
+// 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
+}