mirror of https://github.com/status-im/op-geth.git
More opcodes
This commit is contained in:
obscuren
parent
ee61cfcfa7
commit
489576b6f0
133
block_manager.go
133
block_manager.go
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@ -9,6 +9,7 @@ import (
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"log"
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"math"
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"math/big"
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"strconv"
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)
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type BlockChain struct {
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@ -52,14 +53,14 @@ type BlockManager struct {
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// Stack for processing contracts
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stack *Stack
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// non-persistent key/value memory storage
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mem map[string]string
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mem map[string]*big.Int
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}
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func NewBlockManager() *BlockManager {
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bm := &BlockManager{
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bc: NewBlockChain(),
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stack: NewStack(),
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mem: make(map[string]string),
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mem: make(map[string]*big.Int),
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}
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// Set the last known block number based on the blockchains last
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@ -276,27 +277,27 @@ out:
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base.Add(x, y)
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base.Mod(base, Pow256)
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// Pop result back on the stack
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bm.stack.Push(base.String())
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bm.stack.Push(base)
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case oSUB:
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x, y := bm.stack.Popn()
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// (x - y) % 2 ** 256
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base.Sub(x, y)
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base.Mod(base, Pow256)
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// Pop result back on the stack
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bm.stack.Push(base.String())
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bm.stack.Push(base)
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case oMUL:
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x, y := bm.stack.Popn()
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// (x * y) % 2 ** 256
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base.Mul(x, y)
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base.Mod(base, Pow256)
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// Pop result back on the stack
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bm.stack.Push(base.String())
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bm.stack.Push(base)
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case oDIV:
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x, y := bm.stack.Popn()
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// floor(x / y)
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base.Div(x, y)
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// Pop result back on the stack
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bm.stack.Push(base.String())
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bm.stack.Push(base)
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case oSDIV:
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x, y := bm.stack.Popn()
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// n > 2**255
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@ -312,11 +313,11 @@ out:
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z.Sub(Pow256, z)
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}
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// Push result on to the stack
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bm.stack.Push(z.String())
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bm.stack.Push(z)
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case oMOD:
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x, y := bm.stack.Popn()
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base.Mod(x, y)
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bm.stack.Push(base.String())
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bm.stack.Push(base)
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case oSMOD:
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x, y := bm.stack.Popn()
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// n > 2**255
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@ -332,87 +333,85 @@ out:
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z.Sub(Pow256, z)
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}
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// Push result on to the stack
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bm.stack.Push(z.String())
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bm.stack.Push(z)
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case oEXP:
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x, y := bm.stack.Popn()
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base.Exp(x, y, Pow256)
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bm.stack.Push(base.String())
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bm.stack.Push(base)
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case oNEG:
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base.Sub(Pow256, ethutil.Big(bm.stack.Pop()))
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bm.stack.Push(base.String())
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base.Sub(Pow256, bm.stack.Pop())
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bm.stack.Push(base)
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case oLT:
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x, y := bm.stack.Popn()
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// x < y
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if x.Cmp(y) < 0 {
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bm.stack.Push("1")
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bm.stack.Push(ethutil.BigTrue)
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} else {
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bm.stack.Push("0")
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bm.stack.Push(ethutil.BigFalse)
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}
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case oLE:
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x, y := bm.stack.Popn()
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// x <= y
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if x.Cmp(y) < 1 {
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bm.stack.Push("1")
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bm.stack.Push(ethutil.BigTrue)
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} else {
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bm.stack.Push("0")
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bm.stack.Push(ethutil.BigFalse)
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}
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case oGT:
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x, y := bm.stack.Popn()
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// x > y
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if x.Cmp(y) > 0 {
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bm.stack.Push("1")
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bm.stack.Push(ethutil.BigTrue)
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} else {
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bm.stack.Push("0")
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bm.stack.Push(ethutil.BigFalse)
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}
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case oGE:
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x, y := bm.stack.Popn()
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// x >= y
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if x.Cmp(y) > -1 {
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bm.stack.Push("1")
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bm.stack.Push(ethutil.BigTrue)
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} else {
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bm.stack.Push("0")
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bm.stack.Push(ethutil.BigFalse)
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}
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case oNOT:
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x, y := bm.stack.Popn()
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// x != y
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if x.Cmp(y) != 0 {
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bm.stack.Push("1")
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bm.stack.Push(ethutil.BigTrue)
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} else {
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bm.stack.Push("0")
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bm.stack.Push(ethutil.BigFalse)
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}
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// Please note that the following code contains some
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// ugly string casting. This will have to change to big
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// ints. TODO :)
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case oMYADDRESS:
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bm.stack.Push(string(tx.Hash()))
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bm.stack.Push(ethutil.BigD(tx.Hash()))
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case oTXSENDER:
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bm.stack.Push(string(tx.Sender()))
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bm.stack.Push(ethutil.BigD(tx.Sender()))
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case oTXVALUE:
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bm.stack.Push(tx.Value.String())
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bm.stack.Push(tx.Value)
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case oTXDATAN:
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bm.stack.Push(big.NewInt(int64(len(tx.Data))).String())
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bm.stack.Push(big.NewInt(int64(len(tx.Data))))
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case oTXDATA:
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v := ethutil.Big(bm.stack.Pop())
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v := bm.stack.Pop()
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// v >= len(data)
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if v.Cmp(big.NewInt(int64(len(tx.Data)))) >= 0 {
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//I know this will change. It makes no
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//sense. Read comment above
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bm.stack.Push(ethutil.Big("0").String())
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bm.stack.Push(ethutil.Big("0"))
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} else {
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bm.stack.Push(ethutil.Big(tx.Data[v.Uint64()]).String())
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bm.stack.Push(ethutil.Big(tx.Data[v.Uint64()]))
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}
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case oBLK_PREVHASH:
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bm.stack.Push(string(block.PrevHash))
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bm.stack.Push(ethutil.Big(block.PrevHash))
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case oBLK_COINBASE:
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bm.stack.Push(block.Coinbase)
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bm.stack.Push(ethutil.Big(block.Coinbase))
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case oBLK_TIMESTAMP:
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bm.stack.Push(big.NewInt(block.Time).String())
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bm.stack.Push(big.NewInt(block.Time))
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case oBLK_NUMBER:
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bm.stack.Push(blockInfo.Number.String())
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bm.stack.Push(blockInfo.Number)
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case oBLK_DIFFICULTY:
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bm.stack.Push(block.Difficulty.String())
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bm.stack.Push(block.Difficulty)
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case oBASEFEE:
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// e = 10^21
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e := big.NewInt(0).Exp(big.NewInt(10), big.NewInt(21), big.NewInt(0))
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@ -429,23 +428,23 @@ out:
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x.Div(e, base)
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// x = floor(10^21 / floor(diff^0.5))
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bm.stack.Push(x.String())
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bm.stack.Push(x)
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case oSHA256, oRIPEMD160:
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// This is probably save
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// ceil(pop / 32)
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length := int(math.Ceil(float64(ethutil.Big(bm.stack.Pop()).Uint64()) / 32.0))
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length := int(math.Ceil(float64(bm.stack.Pop().Uint64()) / 32.0))
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// New buffer which will contain the concatenated popped items
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data := new(bytes.Buffer)
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for i := 0; i < length; i++ {
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// Encode the number to bytes and have it 32bytes long
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num := ethutil.NumberToBytes(ethutil.Big(bm.stack.Pop()).Bytes(), 256)
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num := ethutil.NumberToBytes(bm.stack.Pop().Bytes(), 256)
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data.WriteString(string(num))
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}
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if op == oSHA256 {
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bm.stack.Push(base.SetBytes(ethutil.Sha256Bin(data.Bytes())).String())
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bm.stack.Push(base.SetBytes(ethutil.Sha256Bin(data.Bytes())))
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} else {
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bm.stack.Push(base.SetBytes(ethutil.Ripemd160(data.Bytes())).String())
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bm.stack.Push(base.SetBytes(ethutil.Ripemd160(data.Bytes())))
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}
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case oECMUL:
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y := bm.stack.Pop()
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@ -454,14 +453,14 @@ out:
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//if ethutil.Big(x).Cmp(ethutil.Big(y)) {
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data := new(bytes.Buffer)
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data.WriteString(x)
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data.WriteString(y)
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data.WriteString(x.String())
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data.WriteString(y.String())
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if secp256k1.VerifyPubkeyValidity(data.Bytes()) == 1 {
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// TODO
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} else {
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// Invalid, push infinity
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bm.stack.Push("0")
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bm.stack.Push("0")
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bm.stack.Push(ethutil.Big("0"))
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bm.stack.Push(ethutil.Big("0"))
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}
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//} else {
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// // Invalid, push infinity
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@ -475,31 +474,59 @@ out:
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case oECVALID:
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case oSHA3:
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case oPUSH:
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// Get the next entry and pushes the value on the stack
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pc++
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bm.stack.Push(contract.State().Get(string(ethutil.NumberToBytes(uint64(pc), 32))))
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bm.stack.Push(bm.mem[strconv.Itoa(pc)])
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case oPOP:
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// Pop current value of the stack
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bm.stack.Pop()
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case oDUP:
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// Dup top stack
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x := bm.stack.Pop()
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bm.stack.Push(x)
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bm.stack.Push(x)
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case oSWAP:
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// Swap two top most values
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x, y := bm.stack.Popn()
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bm.stack.Push(y)
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bm.stack.Push(x)
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case oMLOAD:
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x := bm.stack.Pop()
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bm.stack.Push(bm.mem[x.String()])
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case oMSTORE:
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x, y := bm.stack.Popn()
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bm.mem[x.String()] = y
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case oSLOAD:
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// Load the value in storage and push it on the stack
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x := bm.stack.Pop()
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// decode the object as a big integer
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decoder := ethutil.NewRlpDecoder([]byte(contract.State().Get(x.String())))
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if !decoder.IsNil() {
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bm.stack.Push(decoder.AsBigInt())
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} else {
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bm.stack.Push(ethutil.BigFalse)
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}
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case oSSTORE:
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// Store Y at index X
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x, y := bm.stack.Popn()
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contract.State().Update(x.String(), string(ethutil.Encode(y)))
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case oJMP:
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x := int(bm.stack.Pop().Uint64())
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// Set pc to x - 1 (minus one so the incrementing at the end won't effect it)
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pc = x
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pc--
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case oJMPI:
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x := bm.stack.Pop()
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// Set pc to x if it's non zero
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if x.Cmp(ethutil.BigFalse) != 0 {
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pc = int(x.Uint64())
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pc--
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}
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case oIND:
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bm.stack.Push(big.NewInt(int64(pc)))
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case oEXTRO:
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case oBALANCE:
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case oMKTX:
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case oSUICIDE:
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/*
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case oLOAD:
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// Load instruction X on the stack
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i, _ := strconv.Atoi(bm.stack.Pop())
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bm.stack.Push(contract.State().Get(string(ethutil.NumberToBytes(uint64(i), 32))))
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*/
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}
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pc++
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}
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11
stack.go
11
stack.go
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@ -2,7 +2,6 @@ package main
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import (
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"fmt"
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"github.com/ethereum/ethutil-go"
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"math/big"
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)
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@ -135,14 +134,14 @@ 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 []string
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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() string {
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func (st *Stack) Pop() *big.Int {
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s := len(st.data)
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str := st.data[s-1]
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@ -154,13 +153,13 @@ func (st *Stack) Pop() string {
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func (st *Stack) Popn() (*big.Int, *big.Int) {
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s := len(st.data)
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strs := st.data[s-2:]
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ints := st.data[s-2:]
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st.data = st.data[:s-2]
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return ethutil.Big(strs[0]), ethutil.Big(strs[1])
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return ints[0], ints[1]
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}
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func (st *Stack) Push(d string) {
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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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