diff options
| -rw-r--r-- | ethchain/block_chain.go | 8 | ||||
| -rw-r--r-- | ethutil/rlp.go | 4 | ||||
| -rw-r--r-- | ethvm/vm.go | 17 |
3 files changed, 26 insertions, 3 deletions
diff --git a/ethchain/block_chain.go b/ethchain/block_chain.go index 1e29f1188..7c9b60fc5 100644 --- a/ethchain/block_chain.go +++ b/ethchain/block_chain.go @@ -164,6 +164,7 @@ func (bc *BlockChain) setLastBlock() { bc.Add(bc.genesisBlock) fk := append([]byte("bloom"), bc.genesisBlock.Hash()...) bc.Ethereum.Db().Put(fk, make([]byte, 255)) + bc.CurrentBlock = bc.genesisBlock } // Set the last know difficulty (might be 0x0 as initial value, Genesis) @@ -201,10 +202,13 @@ func (bc *BlockChain) GetBlock(hash []byte) *Block { func (self *BlockChain) GetBlockByNumber(num uint64) *Block { block := self.CurrentBlock - for ; block.Number.Uint64() != num; block = self.GetBlock(block.PrevHash) { + for ; block != nil; block = self.GetBlock(block.PrevHash) { + if block.Number.Uint64() == num { + break + } } - if block.Number.Uint64() == 0 && num != 0 { + if block != nil && block.Number.Uint64() == 0 && num != 0 { return nil } diff --git a/ethutil/rlp.go b/ethutil/rlp.go index febfb78e1..55406133b 100644 --- a/ethutil/rlp.go +++ b/ethutil/rlp.go @@ -15,6 +15,10 @@ type RlpEncodeDecode interface { RlpValue() []interface{} } +func Rlp(encoder RlpEncode) []byte { + return encoder.RlpEncode() +} + type RlpEncoder struct { rlpData []byte } diff --git a/ethvm/vm.go b/ethvm/vm.go index f1c23b370..7aff320f9 100644 --- a/ethvm/vm.go +++ b/ethvm/vm.go @@ -670,9 +670,13 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) { stack.Pop() case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16: n := int(op - DUP1 + 1) - stack.Dupn(n) + v := stack.Dupn(n) self.Printf(" => [%d] 0x%x", n, stack.Peek().Bytes()) + + if OpCode(closure.Get(new(big.Int).Add(pc, ethutil.Big1)).Uint()) == POP && OpCode(closure.Get(new(big.Int).Add(pc, big.NewInt(2))).Uint()) == POP { + fmt.Println(toValue(v)) + } case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16: n := int(op - SWAP1 + 2) x, y := stack.Swapn(n) @@ -1004,3 +1008,14 @@ func (self *Message) Exec(codeAddr []byte, caller ClosureRef) (ret []byte, err e return } + +// Mainly used for print variables and passing to Print* +func toValue(val *big.Int) interface{} { + // Let's assume a string on right padded zero's + b := val.Bytes() + if b[0] != 0 && b[len(b)-1] == 0x0 && b[len(b)-2] == 0x0 { + return string(b) + } + + return val +} |