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eips.go
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eips.go
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// (c) 2019-2020, Ava Labs, Inc.
//
// This file is a derived work, based on the go-ethereum library whose original
// notices appear below.
//
// It is distributed under a license compatible with the licensing terms of the
// original code from which it is derived.
//
// Much love to the original authors for their work.
// **********
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package vm
import (
"fmt"
"sort"
"github.com/ava-labs/subnet-evm/params"
"github.com/ava-labs/subnet-evm/vmerrs"
"github.com/ethereum/go-ethereum/common"
"github.com/holiman/uint256"
)
var activators = map[int]func(*JumpTable){
5656: enable5656,
6780: enable6780,
3855: enable3855,
3860: enable3860,
3198: enable3198,
2929: enable2929,
2200: enable2200,
1884: enable1884,
1344: enable1344,
1153: enable1153,
}
// EnableEIP enables the given EIP on the config.
// This operation writes in-place, and callers need to ensure that the globally
// defined jump tables are not polluted.
func EnableEIP(eipNum int, jt *JumpTable) error {
enablerFn, ok := activators[eipNum]
if !ok {
return fmt.Errorf("undefined eip %d", eipNum)
}
enablerFn(jt)
return nil
}
func ValidEip(eipNum int) bool {
_, ok := activators[eipNum]
return ok
}
func ActivateableEips() []string {
var nums []string
for k := range activators {
nums = append(nums, fmt.Sprintf("%d", k))
}
sort.Strings(nums)
return nums
}
// enable1884 applies EIP-1884 to the given jump table:
// - Increase cost of BALANCE to 700
// - Increase cost of EXTCODEHASH to 700
// - Increase cost of SLOAD to 800
// - Define SELFBALANCE, with cost GasFastStep (5)
func enable1884(jt *JumpTable) {
// Gas cost changes
jt[SLOAD].constantGas = params.SloadGasEIP1884
jt[BALANCE].constantGas = params.BalanceGasEIP1884
jt[EXTCODEHASH].constantGas = params.ExtcodeHashGasEIP1884
// New opcode
jt[SELFBALANCE] = &operation{
execute: opSelfBalance,
constantGas: GasFastStep,
minStack: minStack(0, 1),
maxStack: maxStack(0, 1),
}
}
func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
balance, _ := uint256.FromBig(interpreter.evm.StateDB.GetBalance(scope.Contract.Address()))
scope.Stack.push(balance)
return nil, nil
}
// enable1344 applies EIP-1344 (ChainID Opcode)
// - Adds an opcode that returns the current chain’s EIP-155 unique identifier
func enable1344(jt *JumpTable) {
// New opcode
jt[CHAINID] = &operation{
execute: opChainID,
constantGas: GasQuickStep,
minStack: minStack(0, 1),
maxStack: maxStack(0, 1),
}
}
// opChainID implements CHAINID opcode
func opChainID(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
chainId, _ := uint256.FromBig(interpreter.evm.chainConfig.ChainID)
scope.Stack.push(chainId)
return nil, nil
}
// enable2200 applies EIP-2200 (Rebalance net-metered SSTORE)
func enable2200(jt *JumpTable) {
jt[SLOAD].constantGas = params.SloadGasEIP2200
jt[SSTORE].dynamicGas = gasSStoreEIP2200
}
// enable2929 enables "EIP-2929: Gas cost increases for state access opcodes"
// https://eips.ethereum.org/EIPS/eip-2929
func enable2929(jt *JumpTable) {
jt[SSTORE].dynamicGas = gasSStoreEIP2929
jt[SLOAD].constantGas = 0
jt[SLOAD].dynamicGas = gasSLoadEIP2929
jt[EXTCODECOPY].constantGas = params.WarmStorageReadCostEIP2929
jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929
jt[EXTCODESIZE].constantGas = params.WarmStorageReadCostEIP2929
jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck
jt[EXTCODEHASH].constantGas = params.WarmStorageReadCostEIP2929
jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck
jt[BALANCE].constantGas = params.WarmStorageReadCostEIP2929
jt[BALANCE].dynamicGas = gasEip2929AccountCheck
jt[CALL].constantGas = params.WarmStorageReadCostEIP2929
jt[CALL].dynamicGas = gasCallEIP2929
jt[CALLCODE].constantGas = params.WarmStorageReadCostEIP2929
jt[CALLCODE].dynamicGas = gasCallCodeEIP2929
jt[STATICCALL].constantGas = params.WarmStorageReadCostEIP2929
jt[STATICCALL].dynamicGas = gasStaticCallEIP2929
jt[DELEGATECALL].constantGas = params.WarmStorageReadCostEIP2929
jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP2929
// This was previously part of the dynamic cost, but we're using it as a constantGas
// factor here
jt[SELFDESTRUCT].constantGas = params.SelfdestructGasEIP150
jt[SELFDESTRUCT].dynamicGas = gasSelfdestructEIP2929
}
// enable3198 applies EIP-3198 (BASEFEE Opcode)
// - Adds an opcode that returns the current block's base fee.
func enable3198(jt *JumpTable) {
// New opcode
jt[BASEFEE] = &operation{
execute: opBaseFee,
constantGas: GasQuickStep,
minStack: minStack(0, 1),
maxStack: maxStack(0, 1),
}
}
// enable1153 applies EIP-1153 "Transient Storage"
// - Adds TLOAD that reads from transient storage
// - Adds TSTORE that writes to transient storage
func enable1153(jt *JumpTable) {
jt[TLOAD] = &operation{
execute: opTload,
constantGas: params.WarmStorageReadCostEIP2929,
minStack: minStack(1, 1),
maxStack: maxStack(1, 1),
}
jt[TSTORE] = &operation{
execute: opTstore,
constantGas: params.WarmStorageReadCostEIP2929,
minStack: minStack(2, 0),
maxStack: maxStack(2, 0),
}
}
// opTload implements TLOAD opcode
func opTload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
loc := scope.Stack.peek()
hash := common.Hash(loc.Bytes32())
val := interpreter.evm.StateDB.GetTransientState(scope.Contract.Address(), hash)
loc.SetBytes(val.Bytes())
return nil, nil
}
// opTstore implements TSTORE opcode
func opTstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
if interpreter.readOnly {
return nil, vmerrs.ErrWriteProtection
}
loc := scope.Stack.pop()
val := scope.Stack.pop()
interpreter.evm.StateDB.SetTransientState(scope.Contract.Address(), loc.Bytes32(), val.Bytes32())
return nil, nil
}
// opBaseFee implements BASEFEE opcode
func opBaseFee(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
baseFee, _ := uint256.FromBig(interpreter.evm.Context.BaseFee)
scope.Stack.push(baseFee)
return nil, nil
}
// enable3855 applies EIP-3855 (PUSH0 opcode)
func enable3855(jt *JumpTable) {
// New opcode
jt[PUSH0] = &operation{
execute: opPush0,
constantGas: GasQuickStep,
minStack: minStack(0, 1),
maxStack: maxStack(0, 1),
}
}
// opPush0 implements the PUSH0 opcode
func opPush0(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
scope.Stack.push(new(uint256.Int))
return nil, nil
}
// enable3860 enables "EIP-3860: Limit and meter initcode"
// https://eips.ethereum.org/EIPS/eip-3860
func enable3860(jt *JumpTable) {
jt[CREATE].dynamicGas = gasCreateEip3860
jt[CREATE2].dynamicGas = gasCreate2Eip3860
}
// enable5656 enables EIP-5656 (MCOPY opcode)
// https://eips.ethereum.org/EIPS/eip-5656
func enable5656(jt *JumpTable) {
jt[MCOPY] = &operation{
execute: opMcopy,
constantGas: GasFastestStep,
dynamicGas: gasMcopy,
minStack: minStack(3, 0),
maxStack: maxStack(3, 0),
memorySize: memoryMcopy,
}
}
// opMcopy implements the MCOPY opcode (https://eips.ethereum.org/EIPS/eip-5656)
func opMcopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
var (
dst = scope.Stack.pop()
src = scope.Stack.pop()
length = scope.Stack.pop()
)
// These values are checked for overflow during memory expansion calculation
// (the memorySize function on the opcode).
scope.Memory.Copy(dst.Uint64(), src.Uint64(), length.Uint64())
return nil, nil
}
// opBlobHash implements the BLOBHASH opcode
func opBlobHash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
index := scope.Stack.peek()
if index.LtUint64(uint64(len(interpreter.evm.TxContext.BlobHashes))) {
blobHash := interpreter.evm.TxContext.BlobHashes[index.Uint64()]
index.SetBytes32(blobHash[:])
} else {
index.Clear()
}
return nil, nil
}
// opBlobBaseFee implements BLOBBASEFEE opcode
func opBlobBaseFee(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
blobBaseFee, _ := uint256.FromBig(interpreter.evm.Context.BlobBaseFee)
scope.Stack.push(blobBaseFee)
return nil, nil
}
// enable4844 applies EIP-4844 (BLOBHASH opcode)
func enable4844(jt *JumpTable) {
jt[BLOBHASH] = &operation{
execute: opBlobHash,
constantGas: GasFastestStep,
minStack: minStack(1, 1),
maxStack: maxStack(1, 1),
}
}
// enable7516 applies EIP-7516 (BLOBBASEFEE opcode)
func enable7516(jt *JumpTable) {
jt[BLOBBASEFEE] = &operation{
execute: opBlobBaseFee,
constantGas: GasQuickStep,
minStack: minStack(0, 1),
maxStack: maxStack(0, 1),
}
}
// enable6780 applies EIP-6780 (deactivate SELFDESTRUCT)
func enable6780(jt *JumpTable) {
jt[SELFDESTRUCT] = &operation{
execute: opSelfdestruct6780,
dynamicGas: gasSelfdestructEIP3529,
constantGas: params.SelfdestructGasEIP150,
minStack: minStack(1, 0),
maxStack: maxStack(1, 0),
}
}