Moved assembler stage processing to it's own file
This commit is contained in:
obscuren
parent
086acd122b
commit
ca13e3b105
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@ -0,0 +1,126 @@
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package ethchain
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import (
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"fmt"
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"github.com/ethereum/eth-go/ethutil"
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"math/big"
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"regexp"
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)
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func CompileInstr(s interface{}) ([]byte, error) {
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switch s.(type) {
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case string:
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str := s.(string)
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isOp := IsOpCode(str)
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if isOp {
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return []byte{OpCodes[str]}, nil
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}
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num := new(big.Int)
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_, success := num.SetString(str, 0)
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// Assume regular bytes during compilation
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if !success {
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num.SetBytes([]byte(str))
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} else {
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// tmp fix for 32 bytes
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n := ethutil.BigToBytes(num, 256)
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return n, nil
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}
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return num.Bytes(), nil
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case int:
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num := ethutil.BigToBytes(big.NewInt(int64(s.(int))), 256)
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return num, nil
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case []byte:
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return ethutil.BigD(s.([]byte)).Bytes(), nil
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}
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return nil, nil
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}
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// Script compilation functions
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// Compiles strings to machine code
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func Assemble(instructions ...interface{}) (script []byte) {
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//script = make([]string, len(instructions))
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for _, val := range instructions {
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instr, _ := CompileInstr(val)
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//script[i] = string(instr)
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script = append(script, instr...)
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}
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return
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}
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func Disassemble(script []byte) (asm []string) {
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pc := new(big.Int)
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for {
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if pc.Cmp(big.NewInt(int64(len(script)))) >= 0 {
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return
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}
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// Get the memory location of pc
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val := script[pc.Int64()]
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// Get the opcode (it must be an opcode!)
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op := OpCode(val)
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asm = append(asm, fmt.Sprintf("%v", op))
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switch op {
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case oPUSH: // Push PC+1 on to the stack
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pc.Add(pc, ethutil.Big1)
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data := script[pc.Int64() : pc.Int64()+32]
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val := ethutil.BigD(data)
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var b []byte
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if val.Int64() == 0 {
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b = []byte{0}
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} else {
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b = val.Bytes()
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}
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asm = append(asm, fmt.Sprintf("0x%x", b))
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pc.Add(pc, big.NewInt(31))
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case oPUSH20:
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pc.Add(pc, ethutil.Big1)
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data := script[pc.Int64() : pc.Int64()+20]
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val := ethutil.BigD(data)
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var b []byte
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if val.Int64() == 0 {
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b = []byte{0}
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} else {
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b = val.Bytes()
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}
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asm = append(asm, fmt.Sprintf("0x%x", b))
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pc.Add(pc, big.NewInt(19))
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}
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pc.Add(pc, ethutil.Big1)
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}
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return
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}
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func PreProcess(data string) (mainInput, initInput string) {
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reg := "\\(\\)\\s*{([\\d\\w\\W\\n\\s]+?)}"
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mainReg := regexp.MustCompile("main" + reg)
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initReg := regexp.MustCompile("init" + reg)
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main := mainReg.FindStringSubmatch(data)
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if len(main) > 0 {
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mainInput = main[1]
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} else {
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mainInput = data
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}
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init := initReg.FindStringSubmatch(data)
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if len(init) > 0 {
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initInput = init[1]
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}
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return
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}
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@ -71,7 +71,7 @@ func (c *Closure) Address() []byte {
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type DebugHook func(step int, op OpCode, mem *Memory, stack *Stack)
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func (c *Closure) Call(vm *Vm, args []byte, hook DebugHook) []byte {
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func (c *Closure) Call(vm *Vm, args []byte, hook DebugHook) ([]byte, error) {
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c.Args = args
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return vm.RunClosure(c, hook)
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@ -6,153 +6,6 @@ import (
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"math/big"
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)
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type OpCode int
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// Op codes
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const (
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// 0x0 range - arithmetic ops
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oSTOP = 0x00
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oADD = 0x01
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oMUL = 0x02
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oSUB = 0x03
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oDIV = 0x04
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oSDIV = 0x05
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oMOD = 0x06
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oSMOD = 0x07
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oEXP = 0x08
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oNEG = 0x09
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oLT = 0x0a
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oGT = 0x0b
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oEQ = 0x0c
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oNOT = 0x0d
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// 0x10 range - bit ops
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oAND = 0x10
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oOR = 0x11
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oXOR = 0x12
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oBYTE = 0x13
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// 0x20 range - crypto
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oSHA3 = 0x20
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// 0x30 range - closure state
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oADDRESS = 0x30
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oBALANCE = 0x31
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oORIGIN = 0x32
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oCALLER = 0x33
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oCALLVALUE = 0x34
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oCALLDATA = 0x35
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oCALLDATASIZE = 0x36
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oGASPRICE = 0x37
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// 0x40 range - block operations
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oPREVHASH = 0x40
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oCOINBASE = 0x41
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oTIMESTAMP = 0x42
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oNUMBER = 0x43
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oDIFFICULTY = 0x44
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oGASLIMIT = 0x45
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// 0x50 range - 'storage' and execution
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oPUSH = 0x50
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oPUSH20 = 0x80
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oPOP = 0x51
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oDUP = 0x52
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oSWAP = 0x53
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oMLOAD = 0x54
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oMSTORE = 0x55
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oMSTORE8 = 0x56
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oSLOAD = 0x57
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oSSTORE = 0x58
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oJUMP = 0x59
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oJUMPI = 0x5a
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oPC = 0x5b
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oMSIZE = 0x5c
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// 0x60 range - closures
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oCREATE = 0x60
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oCALL = 0x61
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oRETURN = 0x62
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// 0x70 range - other
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oLOG = 0x70 // XXX Unofficial
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oSUICIDE = 0x7f
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)
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// Since the opcodes aren't all in order we can't use a regular slice
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var opCodeToString = map[OpCode]string{
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// 0x0 range - arithmetic ops
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oSTOP: "STOP",
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oADD: "ADD",
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oMUL: "MUL",
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oSUB: "SUB",
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oDIV: "DIV",
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oSDIV: "SDIV",
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oMOD: "MOD",
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oSMOD: "SMOD",
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oEXP: "EXP",
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oNEG: "NEG",
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oLT: "LT",
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oGT: "GT",
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oEQ: "EQ",
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oNOT: "NOT",
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// 0x10 range - bit ops
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oAND: "AND",
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oOR: "OR",
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oXOR: "XOR",
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oBYTE: "BYTE",
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// 0x20 range - crypto
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oSHA3: "SHA3",
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// 0x30 range - closure state
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oADDRESS: "ADDRESS",
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oBALANCE: "BALANCE",
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oORIGIN: "ORIGIN",
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oCALLER: "CALLER",
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oCALLVALUE: "CALLVALUE",
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oCALLDATA: "CALLDATA",
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oCALLDATASIZE: "CALLDATASIZE",
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oGASPRICE: "TXGASPRICE",
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// 0x40 range - block operations
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oPREVHASH: "PREVHASH",
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oCOINBASE: "COINBASE",
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oTIMESTAMP: "TIMESTAMP",
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oNUMBER: "NUMBER",
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oDIFFICULTY: "DIFFICULTY",
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oGASLIMIT: "GASLIMIT",
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// 0x50 range - 'storage' and execution
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oPUSH: "PUSH",
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oPOP: "POP",
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oDUP: "DUP",
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oSWAP: "SWAP",
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oMLOAD: "MLOAD",
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oMSTORE: "MSTORE",
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oMSTORE8: "MSTORE8",
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oSLOAD: "SLOAD",
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oSSTORE: "SSTORE",
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oJUMP: "JUMP",
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oJUMPI: "JUMPI",
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oPC: "PC",
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oMSIZE: "MSIZE",
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// 0x60 range - closures
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oCREATE: "CREATE",
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oCALL: "CALL",
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oRETURN: "RETURN",
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// 0x70 range - other
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oLOG: "LOG",
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oSUICIDE: "SUICIDE",
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}
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func (o OpCode) String() string {
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return opCodeToString[o]
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}
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type OpType int
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const (
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@ -177,6 +30,10 @@ func (st *Stack) Data() []*big.Int {
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return st.data
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}
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func (st *Stack) Len() int {
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return len(st.data)
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}
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func (st *Stack) Pop() *big.Int {
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str := st.data[len(st.data)-1]
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@ -0,0 +1,230 @@
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package ethchain
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type OpCode int
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// Op codes
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const (
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// 0x0 range - arithmetic ops
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oSTOP = 0x00
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oADD = 0x01
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oMUL = 0x02
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oSUB = 0x03
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oDIV = 0x04
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oSDIV = 0x05
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oMOD = 0x06
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oSMOD = 0x07
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oEXP = 0x08
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oNEG = 0x09
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oLT = 0x0a
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oGT = 0x0b
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oEQ = 0x0c
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oNOT = 0x0d
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// 0x10 range - bit ops
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oAND = 0x10
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oOR = 0x11
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oXOR = 0x12
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oBYTE = 0x13
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// 0x20 range - crypto
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oSHA3 = 0x20
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// 0x30 range - closure state
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oADDRESS = 0x30
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oBALANCE = 0x31
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oORIGIN = 0x32
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oCALLER = 0x33
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oCALLVALUE = 0x34
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oCALLDATA = 0x35
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oCALLDATASIZE = 0x36
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oGASPRICE = 0x37
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// 0x40 range - block operations
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oPREVHASH = 0x40
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oCOINBASE = 0x41
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oTIMESTAMP = 0x42
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oNUMBER = 0x43
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oDIFFICULTY = 0x44
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oGASLIMIT = 0x45
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// 0x50 range - 'storage' and execution
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oPUSH = 0x50
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oPUSH20 = 0x80
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oPOP = 0x51
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oDUP = 0x52
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oSWAP = 0x53
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oMLOAD = 0x54
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oMSTORE = 0x55
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oMSTORE8 = 0x56
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oSLOAD = 0x57
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oSSTORE = 0x58
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oJUMP = 0x59
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oJUMPI = 0x5a
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oPC = 0x5b
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oMSIZE = 0x5c
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// 0x60 range - closures
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oCREATE = 0x60
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oCALL = 0x61
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oRETURN = 0x62
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// 0x70 range - other
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oLOG = 0x70 // XXX Unofficial
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oSUICIDE = 0x7f
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)
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// Since the opcodes aren't all in order we can't use a regular slice
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var opCodeToString = map[OpCode]string{
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// 0x0 range - arithmetic ops
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oSTOP: "STOP",
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oADD: "ADD",
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oMUL: "MUL",
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oSUB: "SUB",
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oDIV: "DIV",
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oSDIV: "SDIV",
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oMOD: "MOD",
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oSMOD: "SMOD",
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oEXP: "EXP",
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oNEG: "NEG",
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oLT: "LT",
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oGT: "GT",
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oEQ: "EQ",
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oNOT: "NOT",
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// 0x10 range - bit ops
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oAND: "AND",
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oOR: "OR",
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oXOR: "XOR",
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oBYTE: "BYTE",
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// 0x20 range - crypto
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oSHA3: "SHA3",
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// 0x30 range - closure state
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oADDRESS: "ADDRESS",
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oBALANCE: "BALANCE",
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oORIGIN: "ORIGIN",
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oCALLER: "CALLER",
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oCALLVALUE: "CALLVALUE",
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oCALLDATA: "CALLDATA",
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oCALLDATASIZE: "CALLDATASIZE",
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oGASPRICE: "TXGASPRICE",
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// 0x40 range - block operations
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oPREVHASH: "PREVHASH",
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oCOINBASE: "COINBASE",
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oTIMESTAMP: "TIMESTAMP",
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oNUMBER: "NUMBER",
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oDIFFICULTY: "DIFFICULTY",
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oGASLIMIT: "GASLIMIT",
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// 0x50 range - 'storage' and execution
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oPUSH: "PUSH",
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oPOP: "POP",
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oDUP: "DUP",
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oSWAP: "SWAP",
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oMLOAD: "MLOAD",
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oMSTORE: "MSTORE",
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oMSTORE8: "MSTORE8",
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oSLOAD: "SLOAD",
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oSSTORE: "SSTORE",
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oJUMP: "JUMP",
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oJUMPI: "JUMPI",
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oPC: "PC",
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oMSIZE: "MSIZE",
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// 0x60 range - closures
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oCREATE: "CREATE",
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oCALL: "CALL",
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oRETURN: "RETURN",
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// 0x70 range - other
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oLOG: "LOG",
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oSUICIDE: "SUICIDE",
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}
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func (o OpCode) String() string {
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return opCodeToString[o]
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}
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// Op codes for assembling
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var OpCodes = map[string]byte{
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// 0x0 range - arithmetic ops
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"STOP": 0x00,
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"ADD": 0x01,
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"MUL": 0x02,
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"SUB": 0x03,
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"DIV": 0x04,
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"SDIV": 0x05,
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"MOD": 0x06,
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"SMOD": 0x07,
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"EXP": 0x08,
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"NEG": 0x09,
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"LT": 0x0a,
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"GT": 0x0b,
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"EQ": 0x0c,
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"NOT": 0x0d,
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// 0x10 range - bit ops
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"AND": 0x10,
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"OR": 0x11,
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"XOR": 0x12,
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"BYTE": 0x13,
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// 0x20 range - crypto
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"SHA3": 0x20,
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// 0x30 range - closure state
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"ADDRESS": 0x30,
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"BALANCE": 0x31,
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"ORIGIN": 0x32,
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"CALLER": 0x33,
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"CALLVALUE": 0x34,
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"CALLDATA": 0x35,
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"CALLDATASIZE": 0x36,
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"GASPRICE": 0x38,
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// 0x40 range - block operations
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"PREVHASH": 0x40,
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"COINBASE": 0x41,
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"TIMESTAMP": 0x42,
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"NUMBER": 0x43,
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"DIFFICULTY": 0x44,
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"GASLIMIT": 0x45,
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// 0x50 range - 'storage' and execution
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"PUSH": 0x50,
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"PUSH20": 0x80,
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"POP": 0x51,
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"DUP": 0x52,
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"SWAP": 0x53,
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"MLOAD": 0x54,
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"MSTORE": 0x55,
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"MSTORE8": 0x56,
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"SLOAD": 0x57,
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"SSTORE": 0x58,
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"JUMP": 0x59,
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"JUMPI": 0x5a,
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"PC": 0x5b,
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"MSIZE": 0x5c,
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// 0x60 range - closures
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"CREATE": 0x60,
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"CALL": 0x61,
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"RETURN": 0x62,
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// 0x70 range - other
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"LOG": 0x70,
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"SUICIDE": 0x7f,
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}
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func IsOpCode(s string) bool {
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for key, _ := range OpCodes {
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if key == s {
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return true
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}
|
||||
}
|
||||
return false
|
||||
}
|
||||
134
ethchain/vm.go
134
ethchain/vm.go
|
|
@ -48,7 +48,19 @@ func NewVm(state *State, vars RuntimeVars) *Vm {
|
|||
|
||||
var Pow256 = ethutil.BigPow(2, 256)
|
||||
|
||||
func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
||||
var isRequireError = false
|
||||
|
||||
func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err error) {
|
||||
// Recover from any require exception
|
||||
defer func() {
|
||||
if r := recover(); r != nil && isRequireError {
|
||||
fmt.Println(r)
|
||||
|
||||
ret = closure.Return(nil)
|
||||
err = fmt.Errorf("%v", r)
|
||||
}
|
||||
}()
|
||||
|
||||
// If the amount of gas supplied is less equal to 0
|
||||
if closure.Gas.Cmp(big.NewInt(0)) <= 0 {
|
||||
// TODO Do something
|
||||
|
|
@ -58,6 +70,13 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
mem := &Memory{}
|
||||
// New stack (should this be shared?)
|
||||
stack := NewStack()
|
||||
require := func(m int) {
|
||||
if stack.Len()-1 > m {
|
||||
isRequireError = true
|
||||
panic(fmt.Sprintf("stack = %d, req = %d", stack.Len(), m))
|
||||
}
|
||||
}
|
||||
|
||||
// Instruction pointer
|
||||
pc := big.NewInt(0)
|
||||
// Current step count
|
||||
|
|
@ -121,7 +140,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
if closure.Gas.Cmp(gas) < 0 {
|
||||
ethutil.Config.Log.Debugln("Insufficient gas", closure.Gas, gas)
|
||||
|
||||
return closure.Return(nil)
|
||||
return closure.Return(nil), fmt.Errorf("insufficient gas %v %v", closure.Gas, gas)
|
||||
}
|
||||
|
||||
switch op {
|
||||
|
|
@ -129,10 +148,11 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Print()
|
||||
mem.Print()
|
||||
case oSTOP: // Stop the closure
|
||||
return closure.Return(nil)
|
||||
return closure.Return(nil), nil
|
||||
|
||||
// 0x20 range
|
||||
// 0x20 range
|
||||
case oADD:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// (x + y) % 2 ** 256
|
||||
base.Add(x, y)
|
||||
|
|
@ -140,6 +160,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// Pop result back on the stack
|
||||
stack.Push(base)
|
||||
case oSUB:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// (x - y) % 2 ** 256
|
||||
base.Sub(x, y)
|
||||
|
|
@ -147,6 +168,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// Pop result back on the stack
|
||||
stack.Push(base)
|
||||
case oMUL:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// (x * y) % 2 ** 256
|
||||
base.Mul(x, y)
|
||||
|
|
@ -154,12 +176,14 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// Pop result back on the stack
|
||||
stack.Push(base)
|
||||
case oDIV:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// floor(x / y)
|
||||
base.Div(x, y)
|
||||
// Pop result back on the stack
|
||||
stack.Push(base)
|
||||
case oSDIV:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// n > 2**255
|
||||
if x.Cmp(Pow256) > 0 {
|
||||
|
|
@ -176,10 +200,12 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// Push result on to the stack
|
||||
stack.Push(z)
|
||||
case oMOD:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
base.Mod(x, y)
|
||||
stack.Push(base)
|
||||
case oSMOD:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// n > 2**255
|
||||
if x.Cmp(Pow256) > 0 {
|
||||
|
|
@ -196,14 +222,17 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// Push result on to the stack
|
||||
stack.Push(z)
|
||||
case oEXP:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
base.Exp(x, y, Pow256)
|
||||
|
||||
stack.Push(base)
|
||||
case oNEG:
|
||||
require(1)
|
||||
base.Sub(Pow256, stack.Pop())
|
||||
stack.Push(base)
|
||||
case oLT:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// x < y
|
||||
if x.Cmp(y) < 0 {
|
||||
|
|
@ -212,6 +241,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(ethutil.BigFalse)
|
||||
}
|
||||
case oGT:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// x > y
|
||||
if x.Cmp(y) > 0 {
|
||||
|
|
@ -220,6 +250,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(ethutil.BigFalse)
|
||||
}
|
||||
case oEQ:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
// x == y
|
||||
if x.Cmp(y) == 0 {
|
||||
|
|
@ -228,6 +259,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(ethutil.BigFalse)
|
||||
}
|
||||
case oNOT:
|
||||
require(1)
|
||||
x := stack.Pop()
|
||||
if x.Cmp(ethutil.BigFalse) == 0 {
|
||||
stack.Push(ethutil.BigTrue)
|
||||
|
|
@ -235,8 +267,9 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(ethutil.BigFalse)
|
||||
}
|
||||
|
||||
// 0x10 range
|
||||
// 0x10 range
|
||||
case oAND:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
if (x.Cmp(ethutil.BigTrue) >= 0) && (y.Cmp(ethutil.BigTrue) >= 0) {
|
||||
stack.Push(ethutil.BigTrue)
|
||||
|
|
@ -245,6 +278,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
}
|
||||
|
||||
case oOR:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
if (x.Cmp(ethutil.BigInt0) >= 0) || (y.Cmp(ethutil.BigInt0) >= 0) {
|
||||
stack.Push(ethutil.BigTrue)
|
||||
|
|
@ -252,9 +286,11 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(ethutil.BigFalse)
|
||||
}
|
||||
case oXOR:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
stack.Push(base.Xor(x, y))
|
||||
case oBYTE:
|
||||
require(2)
|
||||
val, th := stack.Popn()
|
||||
if th.Cmp(big.NewInt(32)) < 0 {
|
||||
stack.Push(big.NewInt(int64(len(val.Bytes())-1) - th.Int64()))
|
||||
|
|
@ -262,13 +298,14 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(ethutil.BigFalse)
|
||||
}
|
||||
|
||||
// 0x20 range
|
||||
// 0x20 range
|
||||
case oSHA3:
|
||||
require(2)
|
||||
size, offset := stack.Popn()
|
||||
data := mem.Get(offset.Int64(), size.Int64())
|
||||
|
||||
stack.Push(ethutil.BigD(data))
|
||||
// 0x30 range
|
||||
// 0x30 range
|
||||
case oADDRESS:
|
||||
stack.Push(ethutil.BigD(closure.Object().Address()))
|
||||
case oBALANCE:
|
||||
|
|
@ -281,6 +318,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// FIXME: Original value of the call, not the current value
|
||||
stack.Push(closure.Value)
|
||||
case oCALLDATA:
|
||||
require(1)
|
||||
offset := stack.Pop()
|
||||
mem.Set(offset.Int64(), int64(len(closure.Args)), closure.Args)
|
||||
case oCALLDATASIZE:
|
||||
|
|
@ -288,7 +326,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
case oGASPRICE:
|
||||
// TODO
|
||||
|
||||
// 0x40 range
|
||||
// 0x40 range
|
||||
case oPREVHASH:
|
||||
stack.Push(ethutil.BigD(vm.vars.PrevHash))
|
||||
case oCOINBASE:
|
||||
|
|
@ -300,7 +338,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
case oDIFFICULTY:
|
||||
stack.Push(vm.vars.Diff)
|
||||
case oGASLIMIT:
|
||||
// TODO
|
||||
// TODO
|
||||
|
||||
// 0x50 range
|
||||
case oPUSH: // Push PC+1 on to the stack
|
||||
|
|
@ -324,34 +362,44 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
pc.Add(pc, big.NewInt(19))
|
||||
step++
|
||||
case oPOP:
|
||||
require(1)
|
||||
stack.Pop()
|
||||
case oDUP:
|
||||
require(1)
|
||||
stack.Push(stack.Peek())
|
||||
case oSWAP:
|
||||
require(2)
|
||||
x, y := stack.Popn()
|
||||
stack.Push(y)
|
||||
stack.Push(x)
|
||||
case oMLOAD:
|
||||
require(1)
|
||||
offset := stack.Pop()
|
||||
stack.Push(ethutil.BigD(mem.Get(offset.Int64(), 32)))
|
||||
case oMSTORE: // Store the value at stack top-1 in to memory at location stack top
|
||||
require(2)
|
||||
// Pop value of the stack
|
||||
val, mStart := stack.Popn()
|
||||
mem.Set(mStart.Int64(), 32, ethutil.BigToBytes(val, 256))
|
||||
case oMSTORE8:
|
||||
require(2)
|
||||
val, mStart := stack.Popn()
|
||||
base.And(val, new(big.Int).SetInt64(0xff))
|
||||
mem.Set(mStart.Int64(), 32, ethutil.BigToBytes(base, 256))
|
||||
case oSLOAD:
|
||||
require(1)
|
||||
loc := stack.Pop()
|
||||
val := closure.GetMem(loc)
|
||||
stack.Push(val.BigInt())
|
||||
case oSSTORE:
|
||||
require(2)
|
||||
val, loc := stack.Popn()
|
||||
closure.SetMem(loc, ethutil.NewValue(val))
|
||||
case oJUMP:
|
||||
require(1)
|
||||
pc = stack.Pop()
|
||||
case oJUMPI:
|
||||
require(2)
|
||||
cond, pos := stack.Popn()
|
||||
if cond.Cmp(ethutil.BigTrue) == 0 {
|
||||
pc = pos
|
||||
|
|
@ -360,8 +408,10 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
stack.Push(pc)
|
||||
case oMSIZE:
|
||||
stack.Push(big.NewInt(int64(mem.Len())))
|
||||
// 0x60 range
|
||||
// 0x60 range
|
||||
case oCREATE:
|
||||
case oCALL:
|
||||
require(8)
|
||||
// Closure addr
|
||||
addr := stack.Pop()
|
||||
// Pop gas and value of the stack.
|
||||
|
|
@ -377,14 +427,20 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
// Create a new callable closure
|
||||
closure := NewClosure(closure, contract, contract.script, vm.state, gas, value)
|
||||
// Executer the closure and get the return value (if any)
|
||||
ret := closure.Call(vm, args, hook)
|
||||
ret, err := closure.Call(vm, args, hook)
|
||||
if err != nil {
|
||||
stack.Push(ethutil.BigFalse)
|
||||
} else {
|
||||
stack.Push(ethutil.BigTrue)
|
||||
}
|
||||
|
||||
mem.Set(retOffset.Int64(), retSize.Int64(), ret)
|
||||
case oRETURN:
|
||||
require(2)
|
||||
size, offset := stack.Popn()
|
||||
ret := mem.Get(offset.Int64(), size.Int64())
|
||||
|
||||
return closure.Return(ret)
|
||||
return closure.Return(ret), nil
|
||||
case oSUICIDE:
|
||||
/*
|
||||
recAddr := stack.Pop().Bytes()
|
||||
|
|
@ -405,7 +461,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
default:
|
||||
ethutil.Config.Log.Debugf("Invalid opcode %x\n", op)
|
||||
|
||||
return closure.Return(nil)
|
||||
return closure.Return(nil), fmt.Errorf("Invalid opcode %x", op)
|
||||
}
|
||||
|
||||
pc.Add(pc, ethutil.Big1)
|
||||
|
|
@ -415,55 +471,3 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) []byte {
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
func Disassemble(script []byte) (asm []string) {
|
||||
pc := new(big.Int)
|
||||
for {
|
||||
if pc.Cmp(big.NewInt(int64(len(script)))) >= 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// Get the memory location of pc
|
||||
val := script[pc.Int64()]
|
||||
// Get the opcode (it must be an opcode!)
|
||||
op := OpCode(val)
|
||||
|
||||
asm = append(asm, fmt.Sprintf("%v", op))
|
||||
|
||||
switch op {
|
||||
case oPUSH: // Push PC+1 on to the stack
|
||||
pc.Add(pc, ethutil.Big1)
|
||||
data := script[pc.Int64() : pc.Int64()+32]
|
||||
val := ethutil.BigD(data)
|
||||
|
||||
var b []byte
|
||||
if val.Int64() == 0 {
|
||||
b = []byte{0}
|
||||
} else {
|
||||
b = val.Bytes()
|
||||
}
|
||||
|
||||
asm = append(asm, fmt.Sprintf("0x%x", b))
|
||||
|
||||
pc.Add(pc, big.NewInt(31))
|
||||
case oPUSH20:
|
||||
pc.Add(pc, ethutil.Big1)
|
||||
data := script[pc.Int64() : pc.Int64()+20]
|
||||
val := ethutil.BigD(data)
|
||||
var b []byte
|
||||
if val.Int64() == 0 {
|
||||
b = []byte{0}
|
||||
} else {
|
||||
b = val.Bytes()
|
||||
}
|
||||
|
||||
asm = append(asm, fmt.Sprintf("0x%x", b))
|
||||
|
||||
pc.Add(pc, big.NewInt(19))
|
||||
}
|
||||
|
||||
pc.Add(pc, ethutil.Big1)
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue