mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
2.9 KiB
127 lines
2.9 KiB
package vm
|
|
|
|
import (
|
|
"math"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/logger"
|
|
)
|
|
|
|
var vmlogger = logger.NewLogger("VM")
|
|
|
|
// Global Debug flag indicating Debug VM (full logging)
|
|
var Debug bool
|
|
|
|
type Type byte
|
|
|
|
const (
|
|
StdVmTy Type = iota
|
|
JitVmTy
|
|
|
|
MaxVmTy
|
|
)
|
|
|
|
func NewVm(env Environment) VirtualMachine {
|
|
switch env.VmType() {
|
|
case JitVmTy:
|
|
return NewJitVm(env)
|
|
default:
|
|
vmlogger.Infoln("unsupported vm type %d", env.VmType())
|
|
fallthrough
|
|
case StdVmTy:
|
|
return New(env)
|
|
}
|
|
}
|
|
|
|
var (
|
|
GasQuickStep = big.NewInt(2)
|
|
GasFastestStep = big.NewInt(3)
|
|
GasFastStep = big.NewInt(5)
|
|
GasMidStep = big.NewInt(8)
|
|
GasSlowStep = big.NewInt(10)
|
|
GasExtStep = big.NewInt(20)
|
|
|
|
GasStorageGet = big.NewInt(50)
|
|
GasStorageAdd = big.NewInt(20000)
|
|
GasStorageMod = big.NewInt(5000)
|
|
GasLogBase = big.NewInt(375)
|
|
GasLogTopic = big.NewInt(375)
|
|
GasLogByte = big.NewInt(8)
|
|
GasCreate = big.NewInt(32000)
|
|
GasCreateByte = big.NewInt(200)
|
|
GasCall = big.NewInt(40)
|
|
GasCallValueTransfer = big.NewInt(9000)
|
|
GasStipend = big.NewInt(2300)
|
|
GasCallNewAccount = big.NewInt(25000)
|
|
GasReturn = big.NewInt(0)
|
|
GasStop = big.NewInt(0)
|
|
GasJumpDest = big.NewInt(1)
|
|
|
|
RefundStorage = big.NewInt(15000)
|
|
RefundSuicide = big.NewInt(24000)
|
|
|
|
GasMemWord = big.NewInt(3)
|
|
GasQuadCoeffDenom = big.NewInt(512)
|
|
GasContractByte = big.NewInt(200)
|
|
GasTransaction = big.NewInt(21000)
|
|
GasTxDataNonzeroByte = big.NewInt(68)
|
|
GasTxDataZeroByte = big.NewInt(4)
|
|
GasTx = big.NewInt(21000)
|
|
GasExp = big.NewInt(10)
|
|
GasExpByte = big.NewInt(10)
|
|
|
|
GasSha3Base = big.NewInt(30)
|
|
GasSha3Word = big.NewInt(6)
|
|
GasSha256Base = big.NewInt(60)
|
|
GasSha256Word = big.NewInt(12)
|
|
GasRipemdBase = big.NewInt(600)
|
|
GasRipemdWord = big.NewInt(12)
|
|
GasEcrecover = big.NewInt(3000)
|
|
GasIdentityBase = big.NewInt(15)
|
|
GasIdentityWord = big.NewInt(3)
|
|
GasCopyWord = big.NewInt(3)
|
|
|
|
Pow256 = common.BigPow(2, 256)
|
|
|
|
LogTyPretty byte = 0x1
|
|
LogTyDiff byte = 0x2
|
|
|
|
U256 = common.U256
|
|
S256 = common.S256
|
|
|
|
Zero = common.Big0
|
|
)
|
|
|
|
const MaxCallDepth = 1025
|
|
|
|
func calcMemSize(off, l *big.Int) *big.Int {
|
|
if l.Cmp(common.Big0) == 0 {
|
|
return common.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
|
|
}
|
|
|
|
func getData(data []byte, start, size uint64) []byte {
|
|
x := uint64(math.Min(float64(start), float64(len(data))))
|
|
y := uint64(math.Min(float64(x+size), float64(len(data))))
|
|
|
|
return common.RightPadBytes(data[x:y], int(size))
|
|
}
|
|
|