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Merge pull request #1133 from interlay/frontier-evm
feat: add frontier evm
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| use frame_support::{ | ||
| traits::OnRuntimeUpgrade, | ||
| weights::{constants::WEIGHT_REF_TIME_PER_SECOND, Weight}, | ||
| }; | ||
| use pallet_ethereum::{Transaction, TransactionAction}; | ||
| use sp_core::Get; | ||
| use sp_runtime::Permill; | ||
| use sp_std::marker::PhantomData; | ||
|
|
||
| pub mod precompiles; | ||
|
|
||
| /// Current approximation of the gas/s consumption (Moonbeam) | ||
| pub const GAS_PER_SECOND: u64 = 40_000_000; | ||
| /// Approximate ratio of the amount of Weight per Gas (Moonbeam) | ||
| pub const WEIGHT_PER_GAS: u64 = WEIGHT_REF_TIME_PER_SECOND / GAS_PER_SECOND; | ||
|
|
||
| /// Sets the ideal block fullness to 50%. | ||
| /// If the block weight is between: | ||
| /// - 0-50% the gas fee will decrease | ||
| /// - 50-100% the gas fee will increase | ||
| pub struct BaseFeeThreshold; | ||
| impl pallet_base_fee::BaseFeeThreshold for BaseFeeThreshold { | ||
| fn lower() -> Permill { | ||
| Permill::zero() | ||
| } | ||
| fn ideal() -> Permill { | ||
| Permill::from_parts(500_000) | ||
| } | ||
| fn upper() -> Permill { | ||
| Permill::from_parts(1_000_000) | ||
| } | ||
| } | ||
|
|
||
| /// Get the "action" (call or create) of an Ethereum transaction | ||
| pub trait GetTransactionAction { | ||
| fn action(&self) -> TransactionAction; | ||
| } | ||
|
|
||
| impl GetTransactionAction for Transaction { | ||
| fn action(&self) -> TransactionAction { | ||
| match self { | ||
| Transaction::Legacy(transaction) => transaction.action, | ||
| Transaction::EIP2930(transaction) => transaction.action, | ||
| Transaction::EIP1559(transaction) => transaction.action, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /// Set the EVM chain ID based on the parachain ID | ||
| pub struct SetEvmChainId<T>(PhantomData<T>); | ||
| impl<T> OnRuntimeUpgrade for SetEvmChainId<T> | ||
| where | ||
| T: frame_system::Config + parachain_info::Config + pallet_evm_chain_id::Config, | ||
| { | ||
| fn on_runtime_upgrade() -> Weight { | ||
| let para_id: u32 = parachain_info::Pallet::<T>::parachain_id().into(); | ||
| let evm_id: u64 = para_id.into(); | ||
| pallet_evm_chain_id::ChainId::<T>::put(evm_id); | ||
| <T as frame_system::Config>::DbWeight::get().reads_writes(1, 1) | ||
| } | ||
|
|
||
| #[cfg(feature = "try-runtime")] | ||
| fn pre_upgrade() -> Result<sp_std::vec::Vec<u8>, &'static str> { | ||
| Ok(Default::default()) | ||
| } | ||
|
|
||
| #[cfg(feature = "try-runtime")] | ||
| fn post_upgrade(_: sp_std::vec::Vec<u8>) -> Result<(), &'static str> { | ||
| Ok(()) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| use pallet_evm::{IsPrecompileResult, Precompile, PrecompileHandle, PrecompileResult, PrecompileSet}; | ||
| use sp_core::H160; | ||
| use sp_std::marker::PhantomData; | ||
|
|
||
| use pallet_evm_precompile_modexp::Modexp; | ||
| use pallet_evm_precompile_simple::{ECRecover, Identity, Ripemd160, Sha256}; | ||
|
|
||
| pub struct InterBtcPrecompiles<R>(PhantomData<R>); | ||
|
|
||
| impl<R> InterBtcPrecompiles<R> { | ||
| pub fn new() -> Self { | ||
| Self(Default::default()) | ||
| } | ||
| pub fn used_addresses() -> [H160; 5] { | ||
| [hash(1), hash(2), hash(3), hash(4), hash(5)] | ||
| } | ||
| } | ||
|
|
||
| impl<R> PrecompileSet for InterBtcPrecompiles<R> | ||
| where | ||
| R: pallet_evm::Config, | ||
| { | ||
| fn execute(&self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> { | ||
| match handle.code_address() { | ||
| // Ethereum precompiles: | ||
| a if a == hash(1) => Some(ECRecover::execute(handle)), | ||
| a if a == hash(2) => Some(Sha256::execute(handle)), | ||
| a if a == hash(3) => Some(Ripemd160::execute(handle)), | ||
| a if a == hash(4) => Some(Identity::execute(handle)), | ||
| a if a == hash(5) => Some(Modexp::execute(handle)), | ||
| _ => None, | ||
| } | ||
| } | ||
|
|
||
| fn is_precompile(&self, address: H160, _gas: u64) -> IsPrecompileResult { | ||
| IsPrecompileResult::Answer { | ||
| is_precompile: Self::used_addresses().contains(&address), | ||
| extra_cost: 0, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn hash(a: u64) -> H160 { | ||
| H160::from_low_u64_be(a) | ||
| } |
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