2014-02-15 00:56:09 +02:00
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package ethutil
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import (
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"math/big"
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"strconv"
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)
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// Op codes
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2014-02-21 13:36:41 +02:00
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var OpCodes = map[string]byte{
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2014-02-24 13:11:42 +02:00
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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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"LE": 0x0b,
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"GT": 0x0c,
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"GE": 0x0d,
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"EQ": 0x0e,
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"NOT": 0x0f,
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"MYADDRESS": 0x10,
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"TXSENDER": 0x11,
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"TXVALUE": 0x12,
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"TXDATAN": 0x13,
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"TXDATA": 0x14,
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"BLK_PREVHASH": 0x15,
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"BLK_COINBASE": 0x16,
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"BLK_TIMESTAMP": 0x17,
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"BLK_NUMBER": 0x18,
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"BLK_DIFFICULTY": 0x19,
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"BLK_NONCE": 0x1a,
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"BASEFEE": 0x1b,
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"SHA256": 0x20,
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"RIPEMD160": 0x21,
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"ECMUL": 0x22,
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"ECADD": 0x23,
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"ECSIGN": 0x24,
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"ECRECOVER": 0x25,
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"ECVALID": 0x26,
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"SHA3": 0x27,
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"PUSH": 0x30,
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"POP": 0x31,
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"DUP": 0x32,
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"SWAP": 0x33,
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"MLOAD": 0x34,
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"MSTORE": 0x35,
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"SLOAD": 0x36,
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"SSTORE": 0x37,
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"JMP": 0x38,
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"JMPI": 0x39,
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"IND": 0x3a,
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"EXTRO": 0x3b,
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"BALANCE": 0x3c,
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"MKTX": 0x3d,
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"SUICIDE": 0x3f,
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2014-02-15 00:56:09 +02:00
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}
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2014-02-21 13:36:41 +02:00
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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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}
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2014-02-15 00:56:09 +02:00
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}
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2014-02-21 13:36:41 +02:00
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return false
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}
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2014-02-15 00:56:09 +02:00
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2014-02-21 13:36:41 +02:00
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func CompileInstr(s string) ([]byte, error) {
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isOp := IsOpCode(s)
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if isOp {
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return []byte{OpCodes[s]}, nil
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2014-02-15 00:56:09 +02:00
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}
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2014-02-21 13:36:41 +02:00
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num := new(big.Int)
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num.SetString(s, 0)
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2014-02-15 00:56:09 +02:00
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2014-02-21 13:36:41 +02:00
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return num.Bytes(), nil
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2014-02-15 00:56:09 +02:00
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}
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func Instr(instr string) (int, []string, error) {
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2014-02-21 13:36:41 +02:00
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2014-02-15 00:56:09 +02:00
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base := new(big.Int)
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base.SetString(instr, 0)
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args := make([]string, 7)
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for i := 0; i < 7; i++ {
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// int(int(val) / int(math.Pow(256,float64(i)))) % 256
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exp := BigPow(256, i)
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num := new(big.Int)
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num.Div(base, exp)
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args[i] = num.Mod(num, big.NewInt(256)).String()
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}
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op, _ := strconv.Atoi(args[0])
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return op, args[1:7], nil
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}
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