Creates new contract. Returns gas_left and contract address if contract creation was succesfull.

Returns current depth of execution. If contract A calls contract B, and contract B calls C, then A depth is 0, B is 1, C is 2 and so on.

Returns schedule.

Increments sstore refunds counter.

Returns address balance.

Returns the hash of one of the 256 most recent complete blocks.

Message call. Returns Err, if we run out of gas. Otherwise returns call_result which contains gas left and true if subcall was successfull.

Returns environment info.

Determine whether an account exists.

Determine whether an account exists and is not null (zero balance/nonce, no code).

Returns code at given address

Returns code hash at given address

Returns code size at given address

Returns the storage value for a given key if reversion happens on the current transaction.

Check if running in static context.

Creates log entry with given topics and data

Balance of the origin account.

Should be called when transaction calls `RETURN` opcode. Returns gas_left if cost of returning the data is not too high.

Stores a value for given key.

Returns a value for given key.

Decrements sstore refunds counter.

Should be called when contract commits suicide. Address to which funds should be refunded.

Trace the finalised execution of a single instruction.

Decide if any more operations should be traced. Passthrough for the VM trace.

Prepare to trace an operation. Passthrough for the VM trace.