forked from cerc-io/plugeth
0fda25e471
Fixes the CaptureStart api to include the EVM, thus being able to set the statedb early on. This pr also exposes the struct we used internally in the interpreter to encapsulate the contract, mem, stack, rstack, so we pass it as a single struct to the tracer, and removes the error returns on the capture methods.
147 lines
4.5 KiB
Go
147 lines
4.5 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import (
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"fmt"
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"sort"
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"github.com/ethereum/go-ethereum/params"
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"github.com/holiman/uint256"
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)
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var activators = map[int]func(*JumpTable){
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2929: enable2929,
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2200: enable2200,
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1884: enable1884,
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1344: enable1344,
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}
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// EnableEIP enables the given EIP on the config.
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// This operation writes in-place, and callers need to ensure that the globally
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// defined jump tables are not polluted.
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func EnableEIP(eipNum int, jt *JumpTable) error {
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enablerFn, ok := activators[eipNum]
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if !ok {
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return fmt.Errorf("undefined eip %d", eipNum)
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}
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enablerFn(jt)
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return nil
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}
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func ValidEip(eipNum int) bool {
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_, ok := activators[eipNum]
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return ok
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}
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func ActivateableEips() []string {
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var nums []string
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for k := range activators {
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nums = append(nums, fmt.Sprintf("%d", k))
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}
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sort.Strings(nums)
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return nums
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}
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// enable1884 applies EIP-1884 to the given jump table:
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// - Increase cost of BALANCE to 700
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// - Increase cost of EXTCODEHASH to 700
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// - Increase cost of SLOAD to 800
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// - Define SELFBALANCE, with cost GasFastStep (5)
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func enable1884(jt *JumpTable) {
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// Gas cost changes
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jt[SLOAD].constantGas = params.SloadGasEIP1884
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jt[BALANCE].constantGas = params.BalanceGasEIP1884
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jt[EXTCODEHASH].constantGas = params.ExtcodeHashGasEIP1884
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// New opcode
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jt[SELFBALANCE] = &operation{
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execute: opSelfBalance,
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constantGas: GasFastStep,
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minStack: minStack(0, 1),
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maxStack: maxStack(0, 1),
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}
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}
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func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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balance, _ := uint256.FromBig(interpreter.evm.StateDB.GetBalance(scope.Contract.Address()))
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scope.Stack.push(balance)
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return nil, nil
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}
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// enable1344 applies EIP-1344 (ChainID Opcode)
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// - Adds an opcode that returns the current chain’s EIP-155 unique identifier
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func enable1344(jt *JumpTable) {
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// New opcode
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jt[CHAINID] = &operation{
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execute: opChainID,
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constantGas: GasQuickStep,
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minStack: minStack(0, 1),
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maxStack: maxStack(0, 1),
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}
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}
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// opChainID implements CHAINID opcode
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func opChainID(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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chainId, _ := uint256.FromBig(interpreter.evm.chainConfig.ChainID)
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scope.Stack.push(chainId)
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return nil, nil
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}
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// enable2200 applies EIP-2200 (Rebalance net-metered SSTORE)
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func enable2200(jt *JumpTable) {
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jt[SLOAD].constantGas = params.SloadGasEIP2200
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jt[SSTORE].dynamicGas = gasSStoreEIP2200
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}
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// enable2929 enables "EIP-2929: Gas cost increases for state access opcodes"
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// https://eips.ethereum.org/EIPS/eip-2929
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func enable2929(jt *JumpTable) {
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jt[SSTORE].dynamicGas = gasSStoreEIP2929
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jt[SLOAD].constantGas = 0
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jt[SLOAD].dynamicGas = gasSLoadEIP2929
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jt[EXTCODECOPY].constantGas = WarmStorageReadCostEIP2929
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jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929
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jt[EXTCODESIZE].constantGas = WarmStorageReadCostEIP2929
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jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck
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jt[EXTCODEHASH].constantGas = WarmStorageReadCostEIP2929
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jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck
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jt[BALANCE].constantGas = WarmStorageReadCostEIP2929
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jt[BALANCE].dynamicGas = gasEip2929AccountCheck
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jt[CALL].constantGas = WarmStorageReadCostEIP2929
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jt[CALL].dynamicGas = gasCallEIP2929
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jt[CALLCODE].constantGas = WarmStorageReadCostEIP2929
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jt[CALLCODE].dynamicGas = gasCallCodeEIP2929
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jt[STATICCALL].constantGas = WarmStorageReadCostEIP2929
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jt[STATICCALL].dynamicGas = gasStaticCallEIP2929
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jt[DELEGATECALL].constantGas = WarmStorageReadCostEIP2929
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jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP2929
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// This was previously part of the dynamic cost, but we're using it as a constantGas
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// factor here
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jt[SELFDESTRUCT].constantGas = params.SelfdestructGasEIP150
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jt[SELFDESTRUCT].dynamicGas = gasSelfdestructEIP2929
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}
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