aboutsummaryrefslogtreecommitdiffstats
path: root/vm/common.go
diff options
context:
space:
mode:
Diffstat (limited to 'vm/common.go')
-rw-r--r--vm/common.go66
1 files changed, 66 insertions, 0 deletions
diff --git a/vm/common.go b/vm/common.go
new file mode 100644
index 000000000..3b0d735ba
--- /dev/null
+++ b/vm/common.go
@@ -0,0 +1,66 @@
+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)
+
+ 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
+}