path: root/ethchain/types.go

package ethchain

import (
    "fmt"
)

type OpCode int

// Op codes
const (
    // 0x0 range - arithmetic ops
    STOP = 0x00
    ADD  = 0x01
    MUL  = 0x02
    SUB  = 0x03
    DIV  = 0x04
    SDIV = 0x05
    MOD  = 0x06
    SMOD = 0x07
    EXP  = 0x08
    NEG  = 0x09
    LT   = 0x0a
    GT   = 0x0b
    SLT  = 0x0c
    SGT  = 0x0d
    EQ   = 0x0e
    NOT  = 0x0f

    // 0x10 range - bit ops
    AND  = 0x10
    OR   = 0x11
    XOR  = 0x12
    BYTE = 0x13

    // 0x20 range - crypto
    SHA3 = 0x20

    // 0x30 range - closure state
    ADDRESS      = 0x30
    BALANCE      = 0x31
    ORIGIN       = 0x32
    CALLER       = 0x33
    CALLVALUE    = 0x34
    CALLDATALOAD = 0x35
    CALLDATASIZE = 0x36
    CALLDATACOPY = 0x37
    CODESIZE     = 0x38
    CODECOPY     = 0x39
    GASPRICE     = 0x3a

    // 0x40 range - block operations
    PREVHASH   = 0x40
    COINBASE   = 0x41
    TIMESTAMP  = 0x42
    NUMBER     = 0x43
    DIFFICULTY = 0x44
    GASLIMIT   = 0x45

    // 0x50 range - 'storage' and execution
    POP     = 0x50
    DUP     = 0x51
    SWAP    = 0x52
    MLOAD   = 0x53
    MSTORE  = 0x54
    MSTORE8 = 0x55
    SLOAD   = 0x56
    SSTORE  = 0x57
    JUMP    = 0x58
    JUMPI   = 0x59
    PC      = 0x5a
    MSIZE   = 0x5b
    GAS     = 0x5c

    // 0x60 range
    PUSH1  = 0x60
    PUSH2  = 0x61
    PUSH3  = 0x62
    PUSH4  = 0x63
    PUSH5  = 0x64
    PUSH6  = 0x65
    PUSH7  = 0x66
    PUSH8  = 0x67
    PUSH9  = 0x68
    PUSH10 = 0x69
    PUSH11 = 0x6a
    PUSH12 = 0x6b
    PUSH13 = 0x6c
    PUSH14 = 0x6d
    PUSH15 = 0x6e
    PUSH16 = 0x6f
    PUSH17 = 0x70
    PUSH18 = 0x71
    PUSH19 = 0x72
    PUSH20 = 0x73
    PUSH21 = 0x74
    PUSH22 = 0x75
    PUSH23 = 0x76
    PUSH24 = 0x77
    PUSH25 = 0x78
    PUSH26 = 0x79
    PUSH27 = 0x7a
    PUSH28 = 0x7b
    PUSH29 = 0x7c
    PUSH30 = 0x7d
    PUSH31 = 0x7e
    PUSH32 = 0x7f

    // 0xf0 range - closures
    CREATE = 0xf0
    CALL   = 0xf1
    RETURN = 0xf2

    // 0x70 range - other
    LOG     = 0xfe // XXX Unofficial
    SUICIDE = 0xff
)

// Since the opcodes aren't all in order we can't use a regular slice
var opCodeToString = map[OpCode]string{
    // 0x0 range - arithmetic ops
    STOP: "STOP",
    ADD:  "ADD",
    MUL:  "MUL",
    SUB:  "SUB",
    DIV:  "DIV",
    SDIV: "SDIV",
    MOD:  "MOD",
    SMOD: "SMOD",
    EXP:  "EXP",
    NEG:  "NEG",
    LT:   "LT",
    GT:   "GT",
    SLT:  "SLT",
    SGT:  "SGT",
    EQ:   "EQ",
    NOT:  "NOT",

    // 0x10 range - bit ops
    AND:  "AND",
    OR:   "OR",
    XOR:  "XOR",
    BYTE: "BYTE",

    // 0x20 range - crypto
    SHA3: "SHA3",

    // 0x30 range - closure state
    ADDRESS:      "ADDRESS",
    BALANCE:      "BALANCE",
    ORIGIN:       "ORIGIN",
    CALLER:       "CALLER",
    CALLVALUE:    "CALLVALUE",
    CALLDATALOAD: "CALLDATALOAD",
    CALLDATASIZE: "CALLDATASIZE",
    CALLDATACOPY: "CALLDATACOPY",
    CODESIZE:     "CODESIZE",
    CODECOPY:     "CODECOPY",
    GASPRICE:     "TXGASPRICE",

    // 0x40 range - block operations
    PREVHASH:   "PREVHASH",
    COINBASE:   "COINBASE",
    TIMESTAMP:  "TIMESTAMP",
    NUMBER:     "NUMBER",
    DIFFICULTY: "DIFFICULTY",
    GASLIMIT:   "GASLIMIT",

    // 0x50 range - 'storage' and execution
    POP:     "POP",
    DUP:     "DUP",
    SWAP:    "SWAP",
    MLOAD:   "MLOAD",
    MSTORE:  "MSTORE",
    MSTORE8: "MSTORE8",
    SLOAD:   "SLOAD",
    SSTORE:  "SSTORE",
    JUMP:    "JUMP",
    JUMPI:   "JUMPI",
    PC:      "PC",
    MSIZE:   "MSIZE",
    GAS:     "GAS",

    // 0x60 range - push
    PUSH1:  "PUSH1",
    PUSH2:  "PUSH2",
    PUSH3:  "PUSH3",
    PUSH4:  "PUSH4",
    PUSH5:  "PUSH5",
    PUSH6:  "PUSH6",
    PUSH7:  "PUSH7",
    PUSH8:  "PUSH8",
    PUSH9:  "PUSH9",
    PUSH10: "PUSH10",
    PUSH11: "PUSH11",
    PUSH12: "PUSH12",
    PUSH13: "PUSH13",
    PUSH14: "PUSH14",
    PUSH15: "PUSH15",
    PUSH16: "PUSH16",
    PUSH17: "PUSH17",
    PUSH18: "PUSH18",
    PUSH19: "PUSH19",
    PUSH20: "PUSH20",
    PUSH21: "PUSH21",
    PUSH22: "PUSH22",
    PUSH23: "PUSH23",
    PUSH24: "PUSH24",
    PUSH25: "PUSH25",
    PUSH26: "PUSH26",
    PUSH27: "PUSH27",
    PUSH28: "PUSH28",
    PUSH29: "PUSH29",
    PUSH30: "PUSH30",
    PUSH31: "PUSH31",
    PUSH32: "PUSH32",

    // 0xf0 range
    CREATE: "CREATE",
    CALL:   "CALL",
    RETURN: "RETURN",

    // 0x70 range - other
    LOG:     "LOG",
    SUICIDE: "SUICIDE",
}

func (o OpCode) String() string {
    str := opCodeToString[o]
    if len(str) == 0 {
        return fmt.Sprintf("Missing opcode 0x%x", int(o))
    }

    return str
}

// Op codes for assembling
var OpCodes = map[string]byte{
    // 0x0 range - arithmetic ops
    "STOP": 0x00,
    "ADD":  0x01,
    "MUL":  0x02,
    "SUB":  0x03,
    "DIV":  0x04,
    "SDIV": 0x05,
    "MOD":  0x06,
    "SMOD": 0x07,
    "EXP":  0x08,
    "NEG":  0x09,
    "LT":   0x0a,
    "GT":   0x0b,
    "EQ":   0x0c,
    "NOT":  0x0d,

    // 0x10 range - bit ops
    "AND":  0x10,
    "OR":   0x11,
    "XOR":  0x12,
    "BYTE": 0x13,

    // 0x20 range - crypto
    "SHA3": 0x20,

    // 0x30 range - closure state
    "ADDRESS":      0x30,
    "BALANCE":      0x31,
    "ORIGIN":       0x32,
    "CALLER":       0x33,
    "CALLVALUE":    0x34,
    "CALLDATALOAD": 0x35,
    "CALLDATASIZE": 0x36,
    "GASPRICE":     0x38,

    // 0x40 range - block operations
    "PREVHASH":   0x40,
    "COINBASE":   0x41,
    "TIMESTAMP":  0x42,
    "NUMBER":     0x43,
    "DIFFICULTY": 0x44,
    "GASLIMIT":   0x45,

    // 0x50 range - 'storage' and execution
    "POP":     0x51,
    "DUP":     0x52,
    "SWAP":    0x53,
    "MLOAD":   0x54,
    "MSTORE":  0x55,
    "MSTORE8": 0x56,
    "SLOAD":   0x57,
    "SSTORE":  0x58,
    "JUMP":    0x59,
    "JUMPI":   0x5a,
    "PC":      0x5b,
    "MSIZE":   0x5c,

    // 0x70 range - 'push'
    "PUSH1":  0x60,
    "PUSH2":  0x61,
    "PUSH3":  0x62,
    "PUSH4":  0x63,
    "PUSH5":  0x64,
    "PUSH6":  0x65,
    "PUSH7":  0x66,
    "PUSH8":  0x67,
    "PUSH9":  0x68,
    "PUSH10": 0x69,
    "PUSH11": 0x6a,
    "PUSH12": 0x6b,
    "PUSH13": 0x6c,
    "PUSH14": 0x6d,
    "PUSH15": 0x6e,
    "PUSH16": 0x6f,
    "PUSH17": 0x70,
    "PUSH18": 0x71,
    "PUSH19": 0x72,
    "PUSH20": 0x73,
    "PUSH21": 0x74,
    "PUSH22": 0x75,
    "PUSH23": 0x76,
    "PUSH24": 0x77,
    "PUSH25": 0x78,
    "PUSH26": 0x70,
    "PUSH27": 0x7a,
    "PUSH28": 0x7b,
    "PUSH29": 0x7c,
    "PUSH30": 0x7d,
    "PUSH31": 0x7e,
    "PUSH32": 0x7f,

    // 0xf0 range - closures
    "CREATE": 0xf0,
    "CALL":   0xf1,
    "RETURN": 0xf2,

    // 0x70 range - other
    "LOG":     0xfe,
    "SUICIDE": 0x7f,
}

func IsOpCode(s string) bool {
    for key, _ := range OpCodes {
        if key == s {
            return true
        }
    }
    return false
}