ethereum.spurious_dragon.vm.precompiled_contracts.identity
Ethereum Virtual Machine (EVM) IDENTITY PRECOMPILED CONTRACT ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. contents:: Table of Contents :backlinks: none :local:
Introduction
Implementation of the IDENTITY
precompiled contract.
identity
Writes the message data to output.
Parameters
evm : The current EVM frame.
def identity(evm: Evm) -> None:
23 | """ |
---|---|
24 | Writes the message data to output. |
25 |
|
26 | Parameters |
27 | ---------- |
28 | evm : |
29 | The current EVM frame. |
30 | """ |
31 | data = evm.message.data |
32 | |
33 | # GAS |
34 | word_count = ceil32(Uint(len(data))) // Uint(32) |
35 | charge_gas(evm, GAS_IDENTITY + GAS_IDENTITY_WORD * word_count) |
36 | |
37 | # OPERATION |
38 | evm.output = data |