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feat: add transact function to 4788 (#11157)

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This commit is contained in:
Matthias Seitz
2024-09-24 15:39:40 +02:00
committed by GitHub
parent 6e64a14a6f
commit c0f0dd78a7
1 changed files with 85 additions and 49 deletions
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134
crates/evm/src/system_calls/eip4788.rs
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@ -7,7 +7,7 @@ use reth_chainspec::{ChainSpec, EthereumHardforks};
use reth_execution_errors::{BlockExecutionError, BlockValidationError};
use reth_primitives::Header;
use revm::{interpreter::Host, Database, DatabaseCommit, Evm};
use revm_primitives::{BlockEnv, CfgEnvWithHandlerCfg, EnvWithHandlerCfg, B256};
use revm_primitives::{BlockEnv, CfgEnvWithHandlerCfg, EnvWithHandlerCfg, ResultAndState, B256};
/// Apply the [EIP-4788](https://eips.ethereum.org/EIPS/eip-4788) pre block contract call.
///
@ -50,6 +50,81 @@ where
)
}
/// Applies the pre-block call to the [EIP-4788] beacon block root contract, using the given block,
/// [`ChainSpec`], EVM.
///
/// Note: this does not commit the state changes to the database, it only transact the call.
///
/// Returns `None` if Cancun is not active or the block is the genesis block, otherwise returns the
/// result of the call.
///
/// [EIP-4788]: https://eips.ethereum.org/EIPS/eip-4788
#[inline]
pub fn transact_beacon_root_contract_call<EvmConfig, EXT, DB, Spec>(
evm_config: &EvmConfig,
chain_spec: &Spec,
block_timestamp: u64,
block_number: u64,
parent_beacon_block_root: Option<B256>,
evm: &mut Evm<'_, EXT, DB>,
) -> Result<Option<ResultAndState>, BlockExecutionError>
where
DB: Database + DatabaseCommit,
DB::Error: core::fmt::Display,
EvmConfig: ConfigureEvm<Header = Header>,
Spec: EthereumHardforks,
{
if !chain_spec.is_cancun_active_at_timestamp(block_timestamp) {
return Ok(None)
}
let parent_beacon_block_root =
parent_beacon_block_root.ok_or(BlockValidationError::MissingParentBeaconBlockRoot)?;
// if the block number is zero (genesis block) then the parent beacon block root must
// be 0x0 and no system transaction may occur as per EIP-4788
if block_number == 0 {
if !parent_beacon_block_root.is_zero() {
return Err(BlockValidationError::CancunGenesisParentBeaconBlockRootNotZero {
parent_beacon_block_root,
}
.into())
}
return Ok(None)
}
// get previous env
let previous_env = Box::new(evm.context.env().clone());
// modify env for pre block call
evm_config.fill_tx_env_system_contract_call(
&mut evm.context.evm.env,
alloy_eips::eip4788::SYSTEM_ADDRESS,
BEACON_ROOTS_ADDRESS,
parent_beacon_block_root.0.into(),
);
let mut res = match evm.transact() {
Ok(res) => res,
Err(e) => {
evm.context.evm.env = previous_env;
return Err(BlockValidationError::BeaconRootContractCall {
parent_beacon_block_root: Box::new(parent_beacon_block_root),
message: e.to_string(),
}
.into())
}
};
res.state.remove(&alloy_eips::eip4788::SYSTEM_ADDRESS);
res.state.remove(&evm.block().coinbase);
// re-set the previous env
evm.context.evm.env = previous_env;
Ok(Some(res))
}
/// Applies the pre-block call to the [EIP-4788] beacon block root contract, using the given block,
/// [`ChainSpec`], EVM.
///
@ -72,55 +147,16 @@ where
EvmConfig: ConfigureEvm<Header = Header>,
Spec: EthereumHardforks,
{
if !chain_spec.is_cancun_active_at_timestamp(block_timestamp) {
return Ok(())
if let Some(res) = transact_beacon_root_contract_call(
evm_config,
chain_spec,
block_timestamp,
block_number,
parent_beacon_block_root,
evm,
)? {
evm.context.evm.db.commit(res.state);
}
let parent_beacon_block_root =
parent_beacon_block_root.ok_or(BlockValidationError::MissingParentBeaconBlockRoot)?;
// if the block number is zero (genesis block) then the parent beacon block root must
// be 0x0 and no system transaction may occur as per EIP-4788
if block_number == 0 {
if !parent_beacon_block_root.is_zero() {
return Err(BlockValidationError::CancunGenesisParentBeaconBlockRootNotZero {
parent_beacon_block_root,
}
.into())
}
return Ok(())
}
// get previous env
let previous_env = Box::new(evm.context.env().clone());
// modify env for pre block call
evm_config.fill_tx_env_system_contract_call(
&mut evm.context.evm.env,
alloy_eips::eip4788::SYSTEM_ADDRESS,
BEACON_ROOTS_ADDRESS,
parent_beacon_block_root.0.into(),
);
let mut state = match evm.transact() {
Ok(res) => res.state,
Err(e) => {
evm.context.evm.env = previous_env;
return Err(BlockValidationError::BeaconRootContractCall {
parent_beacon_block_root: Box::new(parent_beacon_block_root),
message: e.to_string(),
}
.into())
}
};
state.remove(&alloy_eips::eip4788::SYSTEM_ADDRESS);
state.remove(&evm.block().coinbase);
evm.context.evm.db.commit(state);
// re-set the previous env
evm.context.evm.env = previous_env;
Ok(())
}