consensus, core, core/vm, parems: review fixes

core/chain_makers.go

@@ -209,9 +209,6 @@ func makeHeader(config *params.ChainConfig, parent *types.Block, state *state.St
 	} else {
 		time = new(big.Int).Add(parent.Time(), big.NewInt(10)) // block time is fixed at 10 seconds
 	}
-	parentHeader := parent.Header()
-	// adjust the parent time
-	parentHeader.Time = new(big.Int).Sub(time, big.NewInt(10))
 
 	return &types.Header{
 		Root:       state.IntermediateRoot(config.IsEIP158(parent.Number())),

core/types/transaction_signing.go

@@ -108,17 +108,6 @@ type Signer interface {
 	Equal(Signer) bool
 }
 
-/*
-// WithSignature returns a new transaction with the given signature. This signature
-// needs to be in the [R || S || V] format where V is 0 or 1.
-func (s EIP86Signer) WithSignature(tx *Transaction, sig []byte) (*Transaction, error) {
-}
-
-// Hash returns the hash to be signed by the sender.
-// It does not uniquely identify the transaction.
-func (s EIP86Signer) Hash(tx *Transaction) common.Hash {}
-*/
-
 // EIP155Transaction implements TransactionInterface using the
 // EIP155 rules
 type EIP155Signer struct {

core/vm/interpreter.go

@@ -45,7 +45,7 @@ type Config struct {
 	DisableGasMetering bool
 	// Enable recording of SHA3/keccak preimages
 	EnablePreimageRecording bool
-	// JumpTable contains the in instruction table. This
+	// JumpTable contains the EVM instruction table. This
 	// may me left uninitialised and will be set the default
 	// table.
 	JumpTable [256]operation
@@ -74,7 +74,7 @@ func NewInterpreter(evm *EVM, cfg Config) *Interpreter {
 		case evm.ChainConfig().IsHomestead(evm.BlockNumber):
 			cfg.JumpTable = homesteadInstructionSet
 		default:
-			cfg.JumpTable = baseInstructionSet
+			cfg.JumpTable = frontierInstructionSet
 		}
 	}
 
@@ -131,14 +131,14 @@ func (in *Interpreter) Run(snapshot int, contract *Contract, input []byte) (ret
 		}
 	}()
 
-	log.Debug("in running contract", "hash", codehash[:])
+	log.Debug("interpreter running contract", "hash", codehash[:])
 	tstart := time.Now()
-	defer log.Debug("in finished running contract", "hash", codehash[:], "elapsed", time.Since(tstart))
+	defer log.Debug("interpreter finished running contract", "hash", codehash[:], "elapsed", time.Since(tstart))
 
 	// The Interpreter main run loop (contextual). This loop runs until either an
 	// explicit STOP, RETURN or SELFDESTRUCT is executed, an error occurred during
-	// the execution of one of the operations or until the in.done is set by
-	// the parent context.Context.
+	// the execution of one of the operations or until the done flag is set by the
+	// parent context.
 	for atomic.LoadInt32(&in.evm.abort) == 0 {
 		// Get the memory location of pc
 		op = contract.GetOp(pc)

core/vm/jump_table.go

@@ -56,12 +56,14 @@ type operation struct {
 }
 
 var (
-	baseInstructionSet      = NewBaseInstructionSet()
+	frontierInstructionSet  = NewFrontierInstructionSet()
 	homesteadInstructionSet = NewHomesteadInstructionSet()
 )
 
+// NewHomesteadInstructionSet returns the frontier and homestead
+// instructions that can be executed during the homestead phase.
 func NewHomesteadInstructionSet() [256]operation {
-	instructionSet := NewBaseInstructionSet()
+	instructionSet := NewFrontierInstructionSet()
 	instructionSet[DELEGATECALL] = operation{
 		execute:       opDelegateCall,
 		gasCost:       gasDelegateCall,
@@ -72,7 +74,9 @@ func NewHomesteadInstructionSet() [256]operation {
 	return instructionSet
 }
 
-func NewBaseInstructionSet() [256]operation {
+// NewFrontierInstructionSet returns the frontier instructions
+// that can be executed during the frontier phase.
+func NewFrontierInstructionSet() [256]operation {
 	return [256]operation{
 		STOP: {
 			execute:       opStop,