path: root/ethvm/types.go

package ethvm

import (
    "fmt"
)

type OpCode byte

// 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
    ADDMOD = 0x14
    MULMOD = 0x15

    // 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
    EXTCODESIZE  = 0x3b
    EXTCODECOPY  = 0x3c

    // 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
    JUMPDEST = 0x5d

    // 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

    DUP1  = 0x80
    DUP2  = 0x81
    DUP3  = 0x82
    DUP4  = 0x83
    DUP5  = 0x84
    DUP6  = 0x85
    DUP7  = 0x86
    DUP8  = 0x87
    DUP9  = 0x88
    DUP10 = 0x89
    DUP11 = 0x8a
    DUP12 = 0x8b
    DUP13 = 0x8c
    DUP14 = 0x8d
    DUP15 = 0x8e
    DUP16 = 0x8f

    SWAP1  = 0x90
    SWAP2  = 0x91
    SWAP3  = 0x92
    SWAP4  = 0x93
    SWAP5  = 0x94
    SWAP6  = 0x95
    SWAP7  = 0x96
    SWAP8  = 0x97
    SWAP9  = 0x98
    SWAP10 = 0x99
    SWAP11 = 0x9a
    SWAP12 = 0x9b
    SWAP13 = 0x9c
    SWAP14 = 0x9d
    SWAP15 = 0x9e
    SWAP16 = 0x9f

    // 0xf0 range - closures
    CREATE   = 0xf0
    CALL     = 0xf1
    RETURN   = 0xf2
    CALLCODE = 0xf3

    // 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",
    ADDMOD: "ADDMOD",
    MULMOD: "MULMOD",

    // 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",
    EXTCODESIZE: "EXTCODESIZE",
    EXTCODECOPY: "EXTCODECOPY",

    // 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",
    JUMPDEST: "JUMPDEST",

    // 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",

    DUP1:  "DUP1",
    DUP2:  "DUP2",
    DUP3:  "DUP3",
    DUP4:  "DUP4",
    DUP5:  "DUP5",
    DUP6:  "DUP6",
    DUP7:  "DUP7",
    DUP8:  "DUP8",
    DUP9:  "DUP9",
    DUP10: "DUP10",
    DUP11: "DUP11",
    DUP12: "DUP12",
    DUP13: "DUP13",
    DUP14: "DUP14",
    DUP15: "DUP15",
    DUP16: "DUP16",

    SWAP1:  "SWAP1",
    SWAP2:  "SWAP2",
    SWAP3:  "SWAP3",
    SWAP4:  "SWAP4",
    SWAP5:  "SWAP5",
    SWAP6:  "SWAP6",
    SWAP7:  "SWAP7",
    SWAP8:  "SWAP8",
    SWAP9:  "SWAP9",
    SWAP10: "SWAP10",
    SWAP11: "SWAP11",
    SWAP12: "SWAP12",
    SWAP13: "SWAP13",
    SWAP14: "SWAP14",
    SWAP15: "SWAP15",
    SWAP16: "SWAP16",

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

    // 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
}