revmc_statetest/btest/
pre_block.rs

1//! Pre block state transition
2
3use revm_context::{Block, ContextTr};
4use revm_database::Database;
5use revm_database_interface::DatabaseCommit;
6use revm_handler::{EvmTr, SystemCallCommitEvm};
7use revm_primitives::{Address, B256, address, hardfork::SpecId};
8
9/// Pre block state transition
10///
11/// # Note
12///
13/// Contains pre-block system calls: EIP-2935 (blockhash) and EIP-4788 (beacon root).
14pub fn pre_block_transition<
15    'a,
16    DB: Database + DatabaseCommit + 'a,
17    EVM: SystemCallCommitEvm<Error: core::fmt::Debug> + EvmTr<Context: ContextTr<Db = DB>>,
18>(
19    evm: &mut EVM,
20    spec: SpecId,
21    parent_block_hash: Option<B256>,
22    parent_beacon_block_root: Option<B256>,
23) -> Result<(), EVM::Error> {
24    // skip system calls for block number 0 (Gensis block)
25    if evm.ctx().block().number() == 0 {
26        return Ok(());
27    }
28
29    // blockhash system call
30    if let Some(parent_block_hash) = parent_block_hash {
31        if spec.is_enabled_in(SpecId::PRAGUE) {
32            system_call_eip2935_blockhash(evm, parent_block_hash)?;
33        }
34    }
35
36    if let Some(parent_beacon_block_root) = parent_beacon_block_root {
37        if spec.is_enabled_in(SpecId::CANCUN) {
38            system_call_eip4788_beacon_root(evm, parent_beacon_block_root)?;
39        }
40    }
41
42    Ok(())
43}
44
45pub const HISTORY_STORAGE_ADDRESS: Address = address!("0x0000F90827F1C53a10cb7A02335B175320002935");
46
47/// Blockhash system callEIP-2935
48#[inline]
49pub(crate) fn system_call_eip2935_blockhash<EVM>(
50    evm: &mut EVM,
51    parent_block_hash: B256,
52) -> Result<(), EVM::Error>
53where
54    EVM: SystemCallCommitEvm<Error: core::fmt::Debug>,
55{
56    evm.system_call_commit(HISTORY_STORAGE_ADDRESS, parent_block_hash.0.into())?;
57    Ok(())
58}
59
60pub const BEACON_ROOTS_ADDRESS: Address = address!("000F3df6D732807Ef1319fB7B8bB8522d0Beac02");
61
62/// Beacon root system call EIP-4788
63pub(crate) fn system_call_eip4788_beacon_root<EVM>(
64    evm: &mut EVM,
65    parent_beacon_block_root: B256,
66) -> Result<(), EVM::Error>
67where
68    EVM: SystemCallCommitEvm<Error: core::fmt::Debug>,
69{
70    evm.system_call_commit(BEACON_ROOTS_ADDRESS, parent_beacon_block_root.0.into())?;
71    Ok(())
72}
revmc_statetest/btest/pre_block.rs

revmc_statetest/btest/
pre_block.rs
