Updated stack based vm
This commit is contained in:
obscuren
parent
6ab61f2c52
commit
2d3c3674fa
65
parsing.go
65
parsing.go
@ -10,50 +10,29 @@ import (
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// Op codes
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// Op codes
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var OpCodes = map[string]string{
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var OpCodes = map[string]string{
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"STOP": "0",
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"STOP": "0",
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"PUSH": "48", // 0x30
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"ADD": "1",
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"POP": "49", // 0x31
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"MUL": "2",
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"LOAD": "54", // 0x36
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"SUB": "3",
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"DIV": "4",
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"SDIV": "5",
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"MOD": "6",
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"SMOD": "7",
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"EXP": "8",
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"NEG": "9",
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"LT": "10",
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"LE": "11",
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"GT": "12",
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"GE": "13",
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"EQ": "14",
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"NOT": "15",
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"MYADDRESS": "16",
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"TXSENDER": "17",
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/* OLD VM OPCODES
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"ADD": "16", // 0x10
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"PUSH": "48",
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"SUB": "17", // 0x11
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"POP": "49",
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"MUL": "18", // 0x12
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"LOAD": "54",
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"DIV": "19", // 0x13
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"SDIV": "20", // 0x14
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"MOD": "21", // 0x15
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"SMOD": "22", // 0x16
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"EXP": "23", // 0x17
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"NEG": "24", // 0x18
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"LT": "32", // 0x20
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"LE": "33", // 0x21
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"GT": "34", // 0x22
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"GE": "35", // 0x23
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"EQ": "36", // 0x24
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"NOT": "37", // 0x25
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"SHA256": "48", // 0x30
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"RIPEMD160": "49", // 0x31
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"ECMUL": "50", // 0x32
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"ECADD": "51", // 0x33
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"SIGN": "52", // 0x34
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"RECOVER": "53", // 0x35
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"COPY": "64", // 0x40
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"ST": "65", // 0x41
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"LD": "66", // 0x42
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"SET": "67", // 0x43
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"JMP": "80", // 0x50
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"JMPI": "81", // 0x51
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"IND": "82", // 0x52
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"EXTRO": "96", // 0x60
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"BALANCE": "97", // 0x61
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"MKTX": "112", // 0x70
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"DATA": "128", // 0x80
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"DATAN": "129", // 0x81
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"MYADDRESS": "144", // 0x90
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"BLKHASH": "145", // 0x91
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"COINBASE": "146", // 0x92
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"SUICIDE": "255", // 0xff
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*/
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}
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}
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320
vm.go
320
vm.go
@ -12,46 +12,28 @@ import (
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// Op codes
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// Op codes
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const (
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const (
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oSTOP int = 0x00
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oSTOP int = 0x00
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oADD int = 0x01
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oMUL int = 0x02
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oSUB int = 0x03
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oDIV int = 0x04
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oSDIV int = 0x05
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oMOD int = 0x06
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oSMOD int = 0x07
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oEXP int = 0x08
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oNEG int = 0x09
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oLT int = 0x0a
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oLE int = 0x0b
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oGT int = 0x0c
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oGE int = 0x0d
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oEQ int = 0x0e
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oNOT int = 0x0f
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oMYADDRESS int = 0x10
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oTXSENDER int = 0x11
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oPUSH int = 0x30
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oPUSH int = 0x30
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oPOP int = 0x31
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oPOP int = 0x31
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oLOAD int = 0x36
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oLOAD int = 0x36
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/*
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oADD int = 0x10
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oSUB int = 0x11
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oMUL int = 0x12
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oDIV int = 0x13
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oSDIV int = 0x14
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oMOD int = 0x15
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oSMOD int = 0x16
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oEXP int = 0x17
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oNEG int = 0x18
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oLT int = 0x20
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oLE int = 0x21
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oGT int = 0x22
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oGE int = 0x23
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oEQ int = 0x24
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oNOT int = 0x25
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oSHA256 int = 0x30
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oRIPEMD160 int = 0x31
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oECMUL int = 0x32
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oECADD int = 0x33
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oSIGN int = 0x34
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oRECOVER int = 0x35
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oCOPY int = 0x40
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oST int = 0x41
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oLD int = 0x42
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oSET int = 0x43
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oJMP int = 0x50
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oJMPI int = 0x51
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oIND int = 0x52
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oEXTRO int = 0x60
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oBALANCE int = 0x61
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oMKTX int = 0x70
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oDATA int = 0x80
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oDATAN int = 0x81
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oMYADDRESS int = 0x90
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oSUICIDE int = 0xff
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*/
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)
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)
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type OpType int
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type OpType int
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@ -79,9 +61,21 @@ func (st *Stack) Pop() string {
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return str
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return str
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}
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}
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func (st *Stack) Popn() (*big.Int, *big.Int) {
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s := len(st.data)
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strs := st.data[s-2:]
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st.data = st.data[:s-2]
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return Big(strs[0]), Big(strs[1])
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}
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func (st *Stack) Push(d string) {
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func (st *Stack) Push(d string) {
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st.data = append(st.data, d)
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st.data = append(st.data, d)
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}
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}
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func (st *Stack) Print() {
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fmt.Println(st.data)
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}
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type Vm struct {
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type Vm struct {
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// Stack
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// Stack
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@ -96,7 +90,7 @@ func NewVm() *Vm {
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func (vm *Vm) ProcContract(tx *Transaction, block *Block, cb TxCallback) {
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func (vm *Vm) ProcContract(tx *Transaction, block *Block, cb TxCallback) {
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// Instruction pointer
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// Instruction pointer
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iptr := 0
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pc := 0
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contract := block.GetContract(tx.Hash())
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contract := block.GetContract(tx.Hash())
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if contract == nil {
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if contract == nil {
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@ -104,164 +98,144 @@ func (vm *Vm) ProcContract(tx *Transaction, block *Block, cb TxCallback) {
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return
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return
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}
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}
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Pow256 := BigPow(2, 256)
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fmt.Printf("# op arg\n")
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fmt.Printf("# op arg\n")
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out:
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out:
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for {
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for {
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// The base big int for all calculations. Use this for any results.
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// The base big int for all calculations. Use this for any results.
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base := new(big.Int)
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base := new(big.Int)
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base.SetString("0",0) // so it doesn't whine about it
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// XXX Should Instr return big int slice instead of string slice?
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// XXX Should Instr return big int slice instead of string slice?
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// Get the next instruction from the contract
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// Get the next instruction from the contract
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op, args, _ := Instr(contract.state.Get(string(Encode(uint32(iptr)))))
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//op, _, _ := Instr(contract.state.Get(string(Encode(uint32(pc)))))
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op, _, _ := Instr(contract.state.Get(string(NumberToBytes(uint64(pc), 32))))
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if !cb(0) { break }
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if Debug {
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if Debug {
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fmt.Printf("%-3d %-4d %v\n", iptr, op, args)
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fmt.Printf("%-3d %-4d\n", pc, op)
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}
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}
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switch op {
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switch op {
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case oADD:
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x, y := vm.stack.Popn()
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// (x + y) % 2 ** 256
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base.Add(x, y)
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base.Mod(base, Pow256)
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// Pop result back on the stack
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vm.stack.Push(base.String())
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case oSUB:
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x, y := vm.stack.Popn()
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// (x - y) % 2 ** 256
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base.Sub(x, y)
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base.Mod(base, Pow256)
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// Pop result back on the stack
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vm.stack.Push(base.String())
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case oMUL:
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x, y := vm.stack.Popn()
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// (x * y) % 2 ** 256
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base.Mul(x, y)
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base.Mod(base, Pow256)
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// Pop result back on the stack
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vm.stack.Push(base.String())
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case oDIV:
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x, y := vm.stack.Popn()
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// floor(x / y)
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base.Div(x, y)
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// Pop result back on the stack
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vm.stack.Push(base.String())
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case oSDIV:
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x, y := vm.stack.Popn()
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// n > 2**255
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if x.Cmp(Pow256) > 0 { x.Sub(Pow256, x) }
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if y.Cmp(Pow256) > 0 { y.Sub(Pow256, y) }
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z := new(big.Int)
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z.Div(x, y)
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if z.Cmp(Pow256) > 0 { z.Sub(Pow256, z) }
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// Push result on to the stack
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vm.stack.Push(z.String())
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case oMOD:
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x, y := vm.stack.Popn()
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base.Mod(x, y)
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vm.stack.Push(base.String())
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case oSMOD:
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x, y := vm.stack.Popn()
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// n > 2**255
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if x.Cmp(Pow256) > 0 { x.Sub(Pow256, x) }
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if y.Cmp(Pow256) > 0 { y.Sub(Pow256, y) }
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z := new(big.Int)
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z.Mod(x, y)
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if z.Cmp(Pow256) > 0 { z.Sub(Pow256, z) }
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// Push result on to the stack
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vm.stack.Push(z.String())
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case oEXP:
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x, y := vm.stack.Popn()
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base.Exp(x, y, Pow256)
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vm.stack.Push(base.String())
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case oNEG:
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base.Sub(Pow256, Big(vm.stack.Pop()))
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vm.stack.Push(base.String())
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case oLT:
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x, y := vm.stack.Popn()
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// x < y
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if x.Cmp(y) < 0 {
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vm.stack.Push("1")
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} else {
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vm.stack.Push("0")
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}
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case oLE:
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x, y := vm.stack.Popn()
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// x <= y
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if x.Cmp(y) < 1 {
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vm.stack.Push("1")
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} else {
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vm.stack.Push("0")
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}
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case oGT:
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x, y := vm.stack.Popn()
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// x > y
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if x.Cmp(y) > 0 {
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vm.stack.Push("1")
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} else {
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vm.stack.Push("0")
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}
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case oGE:
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x, y := vm.stack.Popn()
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// x >= y
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if x.Cmp(y) > -1 {
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vm.stack.Push("1")
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} else {
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vm.stack.Push("0")
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}
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case oNOT:
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x, y := vm.stack.Popn()
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// x != y
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if x.Cmp(y) != 0 {
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vm.stack.Push("1")
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} else {
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vm.stack.Push("0")
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}
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case oMYADDRESS:
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vm.stack.Push(string(tx.Hash()))
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case oTXSENDER:
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vm.stack.Push(tx.sender)
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case oPUSH:
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case oPUSH:
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// Get the next entry and pushes the value on the stack
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// Get the next entry and pushes the value on the stack
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iptr++
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pc++
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vm.stack.Push(contract.state.Get(string(Encode(uint32(iptr)))))
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vm.stack.Push(contract.state.Get(string(NumberToBytes(uint64(pc), 32))))
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case oPOP:
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case oPOP:
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// Pop current value of the stack
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// Pop current value of the stack
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vm.stack.Pop()
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vm.stack.Pop()
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case oLOAD:
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case oLOAD:
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// Load instruction X on the stack
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// Load instruction X on the stack
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i, _ := strconv.Atoi(vm.stack.Pop())
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i, _ := strconv.Atoi(vm.stack.Pop())
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vm.stack.Push(contract.state.Get(string(Encode(uint32(i)))))
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vm.stack.Push(contract.state.Get(string(NumberToBytes(uint64(i), 32))))
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case oSTOP:
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case oSTOP:
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break out
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break out
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}
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}
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iptr++
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pc++
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}
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}
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/*
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type Vm struct {
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// Memory stack
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stack map[string]string
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memory map[string]map[string]string
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}
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func NewVm() *Vm {
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//stackSize := uint(256)
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return &Vm{
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stack: make(map[string]string),
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memory: make(map[string]map[string]string),
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}
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}
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func (vm *Vm) RunTransaction(tx *Transaction, cb TxCallback) {
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if Debug {
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fmt.Printf(`
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# processing Tx (%v)
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# fee = %f, ops = %d, sender = %s, value = %d
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`, tx.addr, float32(tx.fee) / 1e8, len(tx.data), tx.sender, tx.value)
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}
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}
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vm.stack = make(map[string]string)
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vm.stack.Print()
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vm.stack["0"] = tx.sender
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vm.stack["1"] = "100" //int(tx.value)
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vm.stack["1"] = "1000" //int(tx.fee)
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// Stack pointer
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stPtr := 0
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//vm.memory[tx.addr] = make([]int, 256)
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vm.memory[tx.addr] = make(map[string]string)
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// Define instruction 'accessors' for the instruction, which makes it more readable
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// also called register values, shorthanded as Rx/y/z. Memory address are shorthanded as Mx/y/z.
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// Instructions are shorthanded as Ix/y/z
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x := 0; y := 1; z := 2; //a := 3; b := 4; c := 5
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out:
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for stPtr < len(tx.data) {
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// The base big int for all calculations. Use this for any results.
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base := new(big.Int)
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// XXX Should Instr return big int slice instead of string slice?
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op, args, _ := Instr(tx.data[stPtr])
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if Debug {
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fmt.Printf("%-3d %d %v\n", stPtr, op, args)
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}
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opType := OpType(tNorm)
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// Determine the op type (used for calculating fees by the block manager)
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switch op {
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case oEXTRO, oBALANCE:
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opType = tExtro
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case oSHA256, oRIPEMD160, oECMUL, oECADD: // TODO add rest
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opType = tCrypto
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}
|
|
||||||
|
|
||||||
// If the callback yielded a negative result abort execution
|
|
||||||
if !cb(opType) { break out }
|
|
||||||
|
|
||||||
nptr := stPtr
|
|
||||||
switch op {
|
|
||||||
case oSTOP:
|
|
||||||
fmt.Println("exiting (oSTOP), idx =", nptr)
|
|
||||||
|
|
||||||
break out
|
|
||||||
case oADD:
|
|
||||||
// (Rx + Ry) % 2 ** 256
|
|
||||||
base.Add(Big(vm.stack[args[ x ]]), Big(vm.stack[args[ y ]]))
|
|
||||||
base.Mod(base, big.NewInt(int64(math.Pow(2, 256))))
|
|
||||||
// Set the result to Rz
|
|
||||||
vm.stack[args[ z ]] = base.String()
|
|
||||||
case oSUB:
|
|
||||||
// (Rx - Ry) % 2 ** 256
|
|
||||||
base.Sub(Big(vm.stack[args[ x ]]), Big(vm.stack[args[ y ]]))
|
|
||||||
base.Mod(base, big.NewInt(int64(math.Pow(2, 256))))
|
|
||||||
// Set the result to Rz
|
|
||||||
vm.stack[args[ z ]] = base.String()
|
|
||||||
case oMUL:
|
|
||||||
// (Rx * Ry) % 2 ** 256
|
|
||||||
base.Mul(Big(vm.stack[args[ x ]]), Big(vm.stack[args[ y ]]))
|
|
||||||
base.Mod(base, big.NewInt(int64(math.Pow(2, 256))))
|
|
||||||
// Set the result to Rz
|
|
||||||
vm.stack[args[ z ]] = base.String()
|
|
||||||
case oDIV:
|
|
||||||
// floor(Rx / Ry)
|
|
||||||
base.Div(Big(vm.stack[args[ x ]]), Big(vm.stack[args[ y ]]))
|
|
||||||
// Set the result to Rz
|
|
||||||
vm.stack[args[ z ]] = base.String()
|
|
||||||
case oSET:
|
|
||||||
// Set the (numeric) value at Iy to Rx
|
|
||||||
vm.stack[args[ x ]] = args[ y ]
|
|
||||||
case oLD:
|
|
||||||
// Load the value at Mx to Ry
|
|
||||||
vm.stack[args[ y ]] = vm.memory[tx.addr][vm.stack[args[ x ]]]
|
|
||||||
case oLT:
|
|
||||||
cmp := Big(vm.stack[args[ x ]]).Cmp( Big(vm.stack[args[ y ]]) )
|
|
||||||
// Set the result as "boolean" value to Rz
|
|
||||||
if cmp < 0 { // a < b
|
|
||||||
vm.stack[args[ z ]] = "1"
|
|
||||||
} else {
|
|
||||||
vm.stack[args[ z ]] = "0"
|
|
||||||
}
|
|
||||||
case oJMP:
|
|
||||||
// Set the instruction pointer to the value at Rx
|
|
||||||
ptr, _ := strconv.Atoi( vm.stack[args[ x ]] )
|
|
||||||
nptr = ptr
|
|
||||||
case oJMPI:
|
|
||||||
// Set the instruction pointer to the value at Ry if Rx yields true
|
|
||||||
if vm.stack[args[ x ]] != "0" {
|
|
||||||
ptr, _ := strconv.Atoi( vm.stack[args[ y ]] )
|
|
||||||
nptr = ptr
|
|
||||||
}
|
|
||||||
default:
|
|
||||||
fmt.Println("Error op", op)
|
|
||||||
break
|
|
||||||
}
|
|
||||||
|
|
||||||
if stPtr == nptr {
|
|
||||||
stPtr++
|
|
||||||
} else {
|
|
||||||
stPtr = nptr
|
|
||||||
if Debug { fmt.Println("... JMP", nptr, "...") }
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
*/
|
|
||||||
|
|||||||
59
vm_test.go
59
vm_test.go
@ -7,23 +7,66 @@ import (
|
|||||||
|
|
||||||
|
|
||||||
func TestVm(t *testing.T) {
|
func TestVm(t *testing.T) {
|
||||||
|
InitFees()
|
||||||
|
|
||||||
db, _ := NewMemDatabase()
|
db, _ := NewMemDatabase()
|
||||||
Db = db
|
Db = db
|
||||||
|
|
||||||
ctrct := NewTransaction("", 20, []string{
|
ctrct := NewTransaction("", 200000000, []string{
|
||||||
"PUSH",
|
"PUSH", "1a2f2e",
|
||||||
"1a2f2e",
|
"PUSH", "hallo",
|
||||||
"PUSH",
|
|
||||||
"hallo",
|
|
||||||
"POP", // POP hallo
|
"POP", // POP hallo
|
||||||
"PUSH",
|
"PUSH", "3",
|
||||||
"3",
|
|
||||||
"LOAD", // Load hallo back on the stack
|
"LOAD", // Load hallo back on the stack
|
||||||
|
|
||||||
|
"PUSH", "1",
|
||||||
|
"PUSH", "2",
|
||||||
|
"ADD",
|
||||||
|
|
||||||
|
"PUSH", "2",
|
||||||
|
"PUSH", "1",
|
||||||
|
"SUB",
|
||||||
|
|
||||||
|
"PUSH", "100000000000000000000000",
|
||||||
|
"PUSH", "10000000000000",
|
||||||
|
"SDIV",
|
||||||
|
|
||||||
|
"PUSH", "105",
|
||||||
|
"PUSH", "200",
|
||||||
|
"MOD",
|
||||||
|
|
||||||
|
"PUSH", "100000000000000000000000",
|
||||||
|
"PUSH", "10000000000000",
|
||||||
|
"SMOD",
|
||||||
|
|
||||||
|
"PUSH", "5",
|
||||||
|
"PUSH", "10",
|
||||||
|
"LT",
|
||||||
|
|
||||||
|
"PUSH", "5",
|
||||||
|
"PUSH", "5",
|
||||||
|
"LE",
|
||||||
|
|
||||||
|
"PUSH", "50",
|
||||||
|
"PUSH", "5",
|
||||||
|
"GT",
|
||||||
|
|
||||||
|
"PUSH", "5",
|
||||||
|
"PUSH", "5",
|
||||||
|
"GE",
|
||||||
|
|
||||||
|
"PUSH", "10",
|
||||||
|
"PUSH", "10",
|
||||||
|
"NOT",
|
||||||
|
|
||||||
|
"MYADDRESS",
|
||||||
|
"TXSENDER",
|
||||||
|
|
||||||
"STOP",
|
"STOP",
|
||||||
})
|
})
|
||||||
tx := NewTransaction("1e8a42ea8cce13", 100, []string{})
|
tx := NewTransaction("1e8a42ea8cce13", 100, []string{})
|
||||||
|
|
||||||
block := CreateBlock("", 0, "", "", 0, 0, "", []*Transaction{ctrct, tx})
|
block := CreateBlock("", 0, "", "c014ba53", 0, 0, "", []*Transaction{ctrct, tx})
|
||||||
db.Put(block.Hash(), block.MarshalRlp())
|
db.Put(block.Hash(), block.MarshalRlp())
|
||||||
|
|
||||||
bm := NewBlockManager()
|
bm := NewBlockManager()
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user