mirror of https://github.com/poanetwork/quorum.git
257 lines
4.4 KiB
Go
257 lines
4.4 KiB
Go
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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)
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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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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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tNorm = iota
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tData
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tExtro
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tCrypto
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)
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type TxCallback func(opType OpType) bool
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// Simple push/pop stack mechanism
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type Stack struct {
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data []*big.Int
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}
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func NewStack() *Stack {
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return &Stack{}
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}
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func (st *Stack) Pop() *big.Int {
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str := st.data[0]
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st.data = st.data[1:]
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return str
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}
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func (st *Stack) Popn() (*big.Int, *big.Int) {
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ints := st.data[:2]
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st.data = st.data[2:]
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return ints[0], ints[1]
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}
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func (st *Stack) Peek() *big.Int {
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str := st.data[0]
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return str
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}
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func (st *Stack) Peekn() (*big.Int, *big.Int) {
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ints := st.data[:2]
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return ints[0], ints[1]
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}
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func (st *Stack) Push(d *big.Int) {
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st.data = append(st.data, d)
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}
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func (st *Stack) Print() {
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fmt.Println("### STACK ###")
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if len(st.data) > 0 {
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for i, val := range st.data {
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fmt.Printf("%-3d %v\n", i, val)
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}
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} else {
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fmt.Println("-- empty --")
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}
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fmt.Println("#############")
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}
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type Memory struct {
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store []byte
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}
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func (m *Memory) Set(offset, size int64, value []byte) {
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totSize := offset + size
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lenSize := int64(len(m.store) - 1)
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if totSize > lenSize {
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// Calculate the diff between the sizes
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diff := totSize - lenSize
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if diff > 0 {
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// Create a new empty slice and append it
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newSlice := make([]byte, diff-1)
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// Resize slice
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m.store = append(m.store, newSlice...)
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}
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}
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copy(m.store[offset:offset+size], value)
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}
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func (m *Memory) Get(offset, size int64) []byte {
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return m.store[offset : offset+size]
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}
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func (m *Memory) Len() int {
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return len(m.store)
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}
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func (m *Memory) Print() {
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fmt.Println("### MEM ###")
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if len(m.store) > 0 {
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addr := 0
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for i := 0; i+32 < len(m.store); i += 32 {
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fmt.Printf("%03d %v\n", addr, m.store[i:i+32])
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addr++
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}
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} else {
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fmt.Println("-- empty --")
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}
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fmt.Println("###########")
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}
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