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- // 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/ethereum/go-ethereum/params"
- "github.com/holiman/uint256"
- )
- var activators = map[int]func(*JumpTable){
- 2929: enable2929,
- 2200: enable2200,
- 1884: enable1884,
- 1344: enable1344,
- }
- // 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 = WarmStorageReadCostEIP2929
- jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929
- jt[EXTCODESIZE].constantGas = WarmStorageReadCostEIP2929
- jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck
- jt[EXTCODEHASH].constantGas = WarmStorageReadCostEIP2929
- jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck
- jt[BALANCE].constantGas = WarmStorageReadCostEIP2929
- jt[BALANCE].dynamicGas = gasEip2929AccountCheck
- jt[CALL].constantGas = WarmStorageReadCostEIP2929
- jt[CALL].dynamicGas = gasCallEIP2929
- jt[CALLCODE].constantGas = WarmStorageReadCostEIP2929
- jt[CALLCODE].dynamicGas = gasCallCodeEIP2929
- jt[STATICCALL].constantGas = WarmStorageReadCostEIP2929
- jt[STATICCALL].dynamicGas = gasStaticCallEIP2929
- jt[DELEGATECALL].constantGas = 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
- }
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