mirror of
https://github.com/ethereum/go-ethereum.git
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4a4d3b07e4
* use corret stack heights for value and address in EXTCALL * New extCallGas function that handles min retained and min callee gas * Handle min gas failures via tempCallGas == 0 * remove stipend refund for EXT*CALL * Call Stack too deep should return 1
1174 lines
34 KiB
Go
1174 lines
34 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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"errors"
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"fmt"
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"math"
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"sort"
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"encoding/binary"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/tracing"
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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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5656: enable5656,
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6780: enable6780,
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3855: enable3855,
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3860: enable3860,
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3529: enable3529,
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3198: enable3198,
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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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1153: enable1153,
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4762: enable4762,
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7702: enable7702,
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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 := 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 = params.WarmStorageReadCostEIP2929
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jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929
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jt[EXTCODESIZE].constantGas = params.WarmStorageReadCostEIP2929
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jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck
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jt[EXTCODEHASH].constantGas = params.WarmStorageReadCostEIP2929
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jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck
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jt[BALANCE].constantGas = params.WarmStorageReadCostEIP2929
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jt[BALANCE].dynamicGas = gasEip2929AccountCheck
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jt[CALL].constantGas = params.WarmStorageReadCostEIP2929
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jt[CALL].dynamicGas = gasCallEIP2929
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jt[CALLCODE].constantGas = params.WarmStorageReadCostEIP2929
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jt[CALLCODE].dynamicGas = gasCallCodeEIP2929
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jt[STATICCALL].constantGas = params.WarmStorageReadCostEIP2929
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jt[STATICCALL].dynamicGas = gasStaticCallEIP2929
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jt[DELEGATECALL].constantGas = params.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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// enable3529 enabled "EIP-3529: Reduction in refunds":
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// - Removes refunds for selfdestructs
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// - Reduces refunds for SSTORE
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// - Reduces max refunds to 20% gas
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func enable3529(jt *JumpTable) {
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jt[SSTORE].dynamicGas = gasSStoreEIP3529
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jt[SELFDESTRUCT].dynamicGas = gasSelfdestructEIP3529
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}
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// enable3198 applies EIP-3198 (BASEFEE Opcode)
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// - Adds an opcode that returns the current block's base fee.
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func enable3198(jt *JumpTable) {
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// New opcode
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jt[BASEFEE] = &operation{
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execute: opBaseFee,
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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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// enable1153 applies EIP-1153 "Transient Storage"
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// - Adds TLOAD that reads from transient storage
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// - Adds TSTORE that writes to transient storage
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func enable1153(jt *JumpTable) {
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jt[TLOAD] = &operation{
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execute: opTload,
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constantGas: params.WarmStorageReadCostEIP2929,
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minStack: minStack(1, 1),
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maxStack: maxStack(1, 1),
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}
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jt[TSTORE] = &operation{
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execute: opTstore,
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constantGas: params.WarmStorageReadCostEIP2929,
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minStack: minStack(2, 0),
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maxStack: maxStack(2, 0),
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}
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}
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// opTload implements TLOAD opcode
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func opTload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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loc := scope.Stack.peek()
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hash := common.Hash(loc.Bytes32())
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val := interpreter.evm.StateDB.GetTransientState(scope.Contract.Address(), hash)
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loc.SetBytes(val.Bytes())
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return nil, nil
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}
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// opTstore implements TSTORE opcode
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func opTstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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if interpreter.readOnly {
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return nil, ErrWriteProtection
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}
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loc := scope.Stack.pop()
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val := scope.Stack.pop()
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interpreter.evm.StateDB.SetTransientState(scope.Contract.Address(), loc.Bytes32(), val.Bytes32())
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return nil, nil
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}
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// opBaseFee implements BASEFEE opcode
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func opBaseFee(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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baseFee, _ := uint256.FromBig(interpreter.evm.Context.BaseFee)
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scope.Stack.push(baseFee)
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return nil, nil
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}
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// enable3855 applies EIP-3855 (PUSH0 opcode)
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func enable3855(jt *JumpTable) {
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// New opcode
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jt[PUSH0] = &operation{
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execute: opPush0,
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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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// opPush0 implements the PUSH0 opcode
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func opPush0(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int))
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return nil, nil
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}
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// enable3860 enables "EIP-3860: Limit and meter initcode"
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// https://eips.ethereum.org/EIPS/eip-3860
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func enable3860(jt *JumpTable) {
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jt[CREATE].dynamicGas = gasCreateEip3860
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jt[CREATE2].dynamicGas = gasCreate2Eip3860
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}
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// enable5656 enables EIP-5656 (MCOPY opcode)
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// https://eips.ethereum.org/EIPS/eip-5656
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func enable5656(jt *JumpTable) {
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jt[MCOPY] = &operation{
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execute: opMcopy,
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constantGas: GasFastestStep,
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dynamicGas: gasMcopy,
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minStack: minStack(3, 0),
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maxStack: maxStack(3, 0),
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memorySize: memoryMcopy,
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}
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}
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// opMcopy implements the MCOPY opcode (https://eips.ethereum.org/EIPS/eip-5656)
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func opMcopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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var (
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dst = scope.Stack.pop()
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src = scope.Stack.pop()
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length = scope.Stack.pop()
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)
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// These values are checked for overflow during memory expansion calculation
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// (the memorySize function on the opcode).
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scope.Memory.Copy(dst.Uint64(), src.Uint64(), length.Uint64())
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return nil, nil
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}
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// opBlobHash implements the BLOBHASH opcode
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func opBlobHash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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index := scope.Stack.peek()
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if index.LtUint64(uint64(len(interpreter.evm.TxContext.BlobHashes))) {
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blobHash := interpreter.evm.TxContext.BlobHashes[index.Uint64()]
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index.SetBytes32(blobHash[:])
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} else {
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index.Clear()
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}
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return nil, nil
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}
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// opBlobBaseFee implements BLOBBASEFEE opcode
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func opBlobBaseFee(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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blobBaseFee, _ := uint256.FromBig(interpreter.evm.Context.BlobBaseFee)
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scope.Stack.push(blobBaseFee)
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return nil, nil
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}
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// enable4844 applies EIP-4844 (BLOBHASH opcode)
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func enable4844(jt *JumpTable) {
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jt[BLOBHASH] = &operation{
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execute: opBlobHash,
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constantGas: GasFastestStep,
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minStack: minStack(1, 1),
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maxStack: maxStack(1, 1),
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}
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}
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// enable7516 applies EIP-7516 (BLOBBASEFEE opcode)
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func enable7516(jt *JumpTable) {
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jt[BLOBBASEFEE] = &operation{
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execute: opBlobBaseFee,
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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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// enable6780 applies EIP-6780 (deactivate SELFDESTRUCT)
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func enable6780(jt *JumpTable) {
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jt[SELFDESTRUCT] = &operation{
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execute: opSelfdestruct6780,
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dynamicGas: gasSelfdestructEIP3529,
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constantGas: params.SelfdestructGasEIP150,
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minStack: minStack(1, 0),
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maxStack: maxStack(1, 0),
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}
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}
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func opExtCodeCopyEIP4762(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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var (
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stack = scope.Stack
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a = stack.pop()
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memOffset = stack.pop()
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codeOffset = stack.pop()
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length = stack.pop()
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)
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uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
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if overflow {
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uint64CodeOffset = math.MaxUint64
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}
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addr := common.Address(a.Bytes20())
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code := interpreter.evm.StateDB.GetCode(addr)
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contract := &Contract{
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Code: code,
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self: AccountRef(addr),
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}
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paddedCodeCopy, copyOffset, nonPaddedCopyLength := getDataAndAdjustedBounds(code, uint64CodeOffset, length.Uint64())
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statelessGas := interpreter.evm.AccessEvents.CodeChunksRangeGas(addr, copyOffset, nonPaddedCopyLength, uint64(len(contract.Code)), false)
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if !scope.Contract.UseGas(statelessGas, interpreter.evm.Config.Tracer, tracing.GasChangeUnspecified) {
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scope.Contract.Gas = 0
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return nil, ErrOutOfGas
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}
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scope.Memory.Set(memOffset.Uint64(), length.Uint64(), paddedCodeCopy)
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return nil, nil
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}
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// opPush1EIP4762 handles the special case of PUSH1 opcode for EIP-4762, which
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// need not worry about the adjusted bound logic when adding the PUSHDATA to
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// the list of access events.
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func opPush1EIP4762(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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var (
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codeLen = uint64(len(scope.Contract.Code))
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integer = new(uint256.Int)
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)
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*pc += 1
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if *pc < codeLen {
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scope.Stack.push(integer.SetUint64(uint64(scope.Contract.Code[*pc])))
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if !scope.Contract.IsDeployment && *pc%31 == 0 {
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// touch next chunk if PUSH1 is at the boundary. if so, *pc has
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// advanced past this boundary.
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contractAddr := scope.Contract.Address()
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statelessGas := interpreter.evm.AccessEvents.CodeChunksRangeGas(contractAddr, *pc+1, uint64(1), uint64(len(scope.Contract.Code)), false)
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if !scope.Contract.UseGas(statelessGas, interpreter.evm.Config.Tracer, tracing.GasChangeUnspecified) {
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||
scope.Contract.Gas = 0
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return nil, ErrOutOfGas
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}
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}
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} else {
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scope.Stack.push(integer.Clear())
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}
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return nil, nil
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}
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||
|
||
func makePushEIP4762(size uint64, pushByteSize int) executionFunc {
|
||
return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
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||
codeLen = len(scope.Contract.Code)
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start = min(codeLen, int(*pc+1))
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end = min(codeLen, start+pushByteSize)
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||
)
|
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scope.Stack.push(new(uint256.Int).SetBytes(
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common.RightPadBytes(
|
||
scope.Contract.Code[start:end],
|
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pushByteSize,
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)),
|
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)
|
||
|
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if !scope.Contract.IsDeployment {
|
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contractAddr := scope.Contract.Address()
|
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statelessGas := interpreter.evm.AccessEvents.CodeChunksRangeGas(contractAddr, uint64(start), uint64(pushByteSize), uint64(len(scope.Contract.Code)), false)
|
||
if !scope.Contract.UseGas(statelessGas, interpreter.evm.Config.Tracer, tracing.GasChangeUnspecified) {
|
||
scope.Contract.Gas = 0
|
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return nil, ErrOutOfGas
|
||
}
|
||
}
|
||
|
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*pc += size
|
||
return nil, nil
|
||
}
|
||
}
|
||
|
||
func enable4762(jt *JumpTable) {
|
||
jt[SSTORE] = &operation{
|
||
dynamicGas: gasSStore4762,
|
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execute: opSstore,
|
||
minStack: minStack(2, 0),
|
||
maxStack: maxStack(2, 0),
|
||
}
|
||
jt[SLOAD] = &operation{
|
||
dynamicGas: gasSLoad4762,
|
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execute: opSload,
|
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minStack: minStack(1, 1),
|
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maxStack: maxStack(1, 1),
|
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}
|
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|
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jt[BALANCE] = &operation{
|
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execute: opBalance,
|
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dynamicGas: gasBalance4762,
|
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minStack: minStack(1, 1),
|
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maxStack: maxStack(1, 1),
|
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}
|
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|
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jt[EXTCODESIZE] = &operation{
|
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execute: opExtCodeSize,
|
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dynamicGas: gasExtCodeSize4762,
|
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minStack: minStack(1, 1),
|
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maxStack: maxStack(1, 1),
|
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}
|
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|
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jt[EXTCODEHASH] = &operation{
|
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execute: opExtCodeHash,
|
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dynamicGas: gasExtCodeHash4762,
|
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minStack: minStack(1, 1),
|
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maxStack: maxStack(1, 1),
|
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}
|
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|
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jt[EXTCODECOPY] = &operation{
|
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execute: opExtCodeCopyEIP4762,
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dynamicGas: gasExtCodeCopyEIP4762,
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minStack: minStack(4, 0),
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maxStack: maxStack(4, 0),
|
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memorySize: memoryExtCodeCopy,
|
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}
|
||
|
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jt[CODECOPY] = &operation{
|
||
execute: opCodeCopy,
|
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constantGas: GasFastestStep,
|
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dynamicGas: gasCodeCopyEip4762,
|
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minStack: minStack(3, 0),
|
||
maxStack: maxStack(3, 0),
|
||
memorySize: memoryCodeCopy,
|
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}
|
||
|
||
jt[SELFDESTRUCT] = &operation{
|
||
execute: opSelfdestruct6780,
|
||
dynamicGas: gasSelfdestructEIP4762,
|
||
constantGas: params.SelfdestructGasEIP150,
|
||
minStack: minStack(1, 0),
|
||
maxStack: maxStack(1, 0),
|
||
}
|
||
|
||
jt[CREATE] = &operation{
|
||
execute: opCreate,
|
||
constantGas: params.CreateNGasEip4762,
|
||
dynamicGas: gasCreateEip3860,
|
||
minStack: minStack(3, 1),
|
||
maxStack: maxStack(3, 1),
|
||
memorySize: memoryCreate,
|
||
}
|
||
|
||
jt[CREATE2] = &operation{
|
||
execute: opCreate2,
|
||
constantGas: params.CreateNGasEip4762,
|
||
dynamicGas: gasCreate2Eip3860,
|
||
minStack: minStack(4, 1),
|
||
maxStack: maxStack(4, 1),
|
||
memorySize: memoryCreate2,
|
||
}
|
||
|
||
jt[CALL] = &operation{
|
||
execute: opCall,
|
||
dynamicGas: gasCallEIP4762,
|
||
minStack: minStack(7, 1),
|
||
maxStack: maxStack(7, 1),
|
||
memorySize: memoryCall,
|
||
}
|
||
|
||
jt[CALLCODE] = &operation{
|
||
execute: opCallCode,
|
||
dynamicGas: gasCallCodeEIP4762,
|
||
minStack: minStack(7, 1),
|
||
maxStack: maxStack(7, 1),
|
||
memorySize: memoryCall,
|
||
}
|
||
|
||
jt[STATICCALL] = &operation{
|
||
execute: opStaticCall,
|
||
dynamicGas: gasStaticCallEIP4762,
|
||
minStack: minStack(6, 1),
|
||
maxStack: maxStack(6, 1),
|
||
memorySize: memoryStaticCall,
|
||
}
|
||
|
||
jt[DELEGATECALL] = &operation{
|
||
execute: opDelegateCall,
|
||
dynamicGas: gasDelegateCallEIP4762,
|
||
minStack: minStack(6, 1),
|
||
maxStack: maxStack(6, 1),
|
||
memorySize: memoryDelegateCall,
|
||
}
|
||
|
||
jt[PUSH1] = &operation{
|
||
execute: opPush1EIP4762,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 1),
|
||
maxStack: maxStack(0, 1),
|
||
}
|
||
for i := 1; i < 32; i++ {
|
||
jt[PUSH1+OpCode(i)] = &operation{
|
||
execute: makePushEIP4762(uint64(i+1), i+1),
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 1),
|
||
maxStack: maxStack(0, 1),
|
||
}
|
||
}
|
||
}
|
||
|
||
func enable7702(jt *JumpTable) {
|
||
jt[EXTCODECOPY].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP7702
|
||
|
||
jt[EXTCODESIZE].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[EXTCODESIZE].dynamicGas = gasEip7702CodeCheck
|
||
|
||
jt[EXTCODEHASH].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[EXTCODEHASH].dynamicGas = gasEip7702CodeCheck
|
||
|
||
jt[CALL].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[CALL].dynamicGas = gasCallEIP7702
|
||
|
||
jt[CALLCODE].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[CALLCODE].dynamicGas = gasCallCodeEIP7702
|
||
|
||
jt[STATICCALL].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[STATICCALL].dynamicGas = gasStaticCallEIP7702
|
||
|
||
jt[DELEGATECALL].constantGas = params.WarmStorageReadCostEIP2929
|
||
jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP7702
|
||
}
|
||
|
||
// enableEOF applies the EOF changes.
|
||
func enableEOF(jt *JumpTable) {
|
||
// Deprecate opcodes
|
||
undefined := &operation{
|
||
execute: opUndefined,
|
||
constantGas: 0,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
undefined: true,
|
||
}
|
||
jt[CALL] = undefined
|
||
jt[CALLCODE] = undefined
|
||
jt[DELEGATECALL] = undefined
|
||
jt[STATICCALL] = undefined
|
||
jt[SELFDESTRUCT] = undefined
|
||
jt[JUMP] = undefined
|
||
jt[JUMPI] = undefined
|
||
jt[PC] = undefined
|
||
jt[CREATE] = undefined
|
||
jt[CREATE2] = undefined
|
||
jt[CODESIZE] = undefined
|
||
jt[CODECOPY] = undefined
|
||
jt[EXTCODESIZE] = undefined
|
||
jt[EXTCODECOPY] = undefined
|
||
jt[EXTCODEHASH] = undefined
|
||
jt[GAS] = undefined
|
||
// Allow 0xFE to terminate sections
|
||
jt[INVALID] = &operation{
|
||
execute: opUndefined,
|
||
constantGas: 0,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
terminal: true,
|
||
}
|
||
|
||
// New opcodes
|
||
jt[RJUMP] = &operation{
|
||
execute: opRjump,
|
||
constantGas: GasQuickStep,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
immediate: 2,
|
||
}
|
||
jt[RJUMPI] = &operation{
|
||
execute: opRjumpi,
|
||
constantGas: GasFastishStep,
|
||
minStack: minStack(1, 0),
|
||
maxStack: maxStack(1, 0),
|
||
immediate: 2,
|
||
}
|
||
jt[RJUMPV] = &operation{
|
||
execute: opRjumpv,
|
||
constantGas: GasFastishStep,
|
||
minStack: minStack(1, 0),
|
||
maxStack: maxStack(1, 0),
|
||
immediate: 3, // at least 3, maybe more
|
||
}
|
||
jt[CALLF] = &operation{
|
||
execute: opCallf,
|
||
constantGas: GasFastStep,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
immediate: 2,
|
||
}
|
||
jt[RETF] = &operation{
|
||
execute: opRetf,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
terminal: true,
|
||
}
|
||
jt[JUMPF] = &operation{
|
||
execute: opJumpf,
|
||
constantGas: GasFastStep,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
immediate: 2,
|
||
terminal: true,
|
||
}
|
||
jt[EOFCREATE] = &operation{
|
||
execute: opEOFCreate,
|
||
constantGas: params.Create2Gas,
|
||
dynamicGas: gasEOFCreate,
|
||
minStack: minStack(4, 1),
|
||
maxStack: maxStack(4, 1),
|
||
memorySize: memoryEOFCreate,
|
||
immediate: 1,
|
||
}
|
||
jt[RETURNCONTRACT] = &operation{
|
||
execute: opReturnContract,
|
||
constantGas: GasZeroStep,
|
||
dynamicGas: pureMemoryGascost,
|
||
minStack: minStack(2, 0),
|
||
maxStack: maxStack(2, 0),
|
||
immediate: 1,
|
||
memorySize: memoryReturnContract,
|
||
terminal: true,
|
||
}
|
||
jt[DATALOAD] = &operation{
|
||
execute: opDataLoad,
|
||
constantGas: GasFastishStep,
|
||
minStack: minStack(1, 1),
|
||
maxStack: maxStack(1, 1),
|
||
}
|
||
jt[DATALOADN] = &operation{
|
||
execute: opDataLoadN,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 1),
|
||
maxStack: maxStack(0, 1),
|
||
immediate: 2,
|
||
}
|
||
jt[DATASIZE] = &operation{
|
||
execute: opDataSize,
|
||
constantGas: GasQuickStep,
|
||
minStack: minStack(0, 1),
|
||
maxStack: maxStack(0, 1),
|
||
}
|
||
jt[DATACOPY] = &operation{
|
||
execute: opDataCopy,
|
||
constantGas: GasFastestStep,
|
||
dynamicGas: memoryCopierGas(2),
|
||
minStack: minStack(3, 0),
|
||
maxStack: maxStack(3, 0),
|
||
memorySize: memoryDataCopy,
|
||
}
|
||
jt[DUPN] = &operation{
|
||
execute: opDupN,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 1),
|
||
maxStack: maxStack(0, 1),
|
||
immediate: 1,
|
||
}
|
||
jt[SWAPN] = &operation{
|
||
execute: opSwapN,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
immediate: 1,
|
||
}
|
||
jt[EXCHANGE] = &operation{
|
||
execute: opExchange,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(0, 0),
|
||
maxStack: maxStack(0, 0),
|
||
immediate: 1,
|
||
}
|
||
jt[RETURNDATALOAD] = &operation{
|
||
execute: opReturnDataLoad,
|
||
constantGas: GasFastestStep,
|
||
minStack: minStack(1, 1),
|
||
maxStack: maxStack(1, 1),
|
||
}
|
||
jt[EXTCALL] = &operation{
|
||
execute: opExtCall,
|
||
constantGas: params.WarmStorageReadCostEIP2929,
|
||
dynamicGas: makeCallVariantGasCallEIP2929(gasExtCall, 0),
|
||
minStack: minStack(4, 1),
|
||
maxStack: maxStack(4, 1),
|
||
memorySize: memoryExtCall,
|
||
}
|
||
jt[EXTDELEGATECALL] = &operation{
|
||
execute: opExtDelegateCall,
|
||
dynamicGas: makeCallVariantGasCallEIP2929(gasExtDelegateCall, 0),
|
||
constantGas: params.WarmStorageReadCostEIP2929,
|
||
minStack: minStack(3, 1),
|
||
maxStack: maxStack(3, 1),
|
||
memorySize: memoryExtCall,
|
||
}
|
||
jt[EXTSTATICCALL] = &operation{
|
||
execute: opExtStaticCall,
|
||
constantGas: params.WarmStorageReadCostEIP2929,
|
||
dynamicGas: makeCallVariantGasCallEIP2929(gasExtStaticCall, 0),
|
||
minStack: minStack(3, 1),
|
||
maxStack: maxStack(3, 1),
|
||
memorySize: memoryExtCall,
|
||
}
|
||
}
|
||
|
||
func opExtCodeCopyEOF(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
stack = scope.Stack
|
||
a = stack.pop()
|
||
memOffset = stack.pop()
|
||
codeOffset = stack.pop()
|
||
length = stack.pop()
|
||
)
|
||
uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
|
||
if overflow {
|
||
uint64CodeOffset = math.MaxUint64
|
||
}
|
||
addr := common.Address(a.Bytes20())
|
||
code := interpreter.evm.StateDB.GetCode(addr)
|
||
// Check if we're copying an EOF contract
|
||
if len(code) >= 2 && code[0] == 0xEF && code[1] == 0x00 {
|
||
code = []byte{0xEF, 0x00}
|
||
}
|
||
codeCopy := getData(code, uint64CodeOffset, length.Uint64())
|
||
scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
|
||
|
||
return nil, nil
|
||
}
|
||
|
||
// opRjump implements the rjump opcode.
|
||
func opRjump(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
offset = parseInt16(code[*pc+1:])
|
||
)
|
||
// move pc past op and operand (+3), add relative offset, subtract 1 to
|
||
// account for interpreter loop.
|
||
*pc = uint64(int64(*pc+3) + int64(offset) - 1)
|
||
return nil, nil
|
||
}
|
||
|
||
// opRjumpi implements the RJUMPI opcode
|
||
func opRjumpi(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
condition := scope.Stack.pop()
|
||
if condition.BitLen() == 0 {
|
||
// Not branching, just skip over immediate argument.
|
||
*pc += 2
|
||
return nil, nil
|
||
}
|
||
return opRjump(pc, interpreter, scope)
|
||
}
|
||
|
||
// opRjumpv implements the RJUMPV opcode
|
||
func opRjumpv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
maxIndex = uint64(code[*pc+1]) + 1
|
||
idx = scope.Stack.pop()
|
||
)
|
||
if idx, overflow := idx.Uint64WithOverflow(); overflow || idx >= maxIndex {
|
||
// Index out-of-bounds, don't branch, just skip over immediate
|
||
// argument.
|
||
*pc += 1 + maxIndex*2
|
||
return nil, nil
|
||
}
|
||
offset := parseInt16(code[*pc+2+2*idx.Uint64():])
|
||
// move pc past op and count byte (2), move past count number of 16bit offsets (count*2), add relative offset, subtract 1 to
|
||
// account for interpreter loop.
|
||
*pc = uint64(int64(*pc+2+maxIndex*2) + int64(offset) - 1)
|
||
return nil, nil
|
||
}
|
||
|
||
// opCallf implements the CALLF opcode
|
||
func opCallf(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
idx = binary.BigEndian.Uint16(code[*pc+1:])
|
||
typ = scope.Contract.Container.Types[idx]
|
||
)
|
||
if scope.Stack.len()+int(typ.MaxStackHeight)-int(typ.Input) > 1024 {
|
||
return nil, fmt.Errorf("stack overflow")
|
||
}
|
||
if scope.ReturnStack.Len() > 1024 {
|
||
return nil, fmt.Errorf("return stack overflow")
|
||
}
|
||
retCtx := &ReturnContext{
|
||
Section: scope.CodeSection,
|
||
Pc: *pc + 3,
|
||
StackHeight: scope.Stack.len() - int(typ.Input),
|
||
}
|
||
scope.ReturnStack = append(scope.ReturnStack, retCtx)
|
||
scope.CodeSection = uint64(idx)
|
||
*pc = uint64(math.MaxUint64)
|
||
return nil, nil
|
||
}
|
||
|
||
// opRetf implements the RETF opcode
|
||
func opRetf(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
retCtx := scope.ReturnStack.Pop()
|
||
scope.CodeSection = retCtx.Section
|
||
*pc = retCtx.Pc - 1
|
||
|
||
// If returning from top frame, exit cleanly.
|
||
if scope.ReturnStack.Len() == 0 {
|
||
return nil, errStopToken
|
||
}
|
||
return nil, nil
|
||
}
|
||
|
||
func opJumpf(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
idx = binary.BigEndian.Uint16(code[*pc+1:])
|
||
typ = scope.Contract.Container.Types[idx]
|
||
)
|
||
if scope.Stack.len()+int(typ.MaxStackHeight)-int(typ.Input) > 1024 {
|
||
return nil, fmt.Errorf("stack overflow")
|
||
}
|
||
scope.CodeSection = uint64(idx)
|
||
*pc = uint64(math.MaxUint64)
|
||
return nil, nil
|
||
}
|
||
|
||
func opEOFCreate(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
if interpreter.readOnly {
|
||
return nil, ErrWriteProtection
|
||
}
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
idx = code[*pc+1]
|
||
value = scope.Stack.pop()
|
||
salt = scope.Stack.pop()
|
||
offset, size = scope.Stack.pop(), scope.Stack.pop()
|
||
input = scope.Memory.GetCopy(offset.Uint64(), size.Uint64())
|
||
)
|
||
if int(idx) >= len(scope.Contract.Container.ContainerCode) {
|
||
return nil, fmt.Errorf("invalid subcontainer")
|
||
}
|
||
|
||
// Deduct hashing charge
|
||
// Since size <= params.MaxInitCodeSize, these multiplication cannot overflow
|
||
hashingCharge := (params.Keccak256WordGas) * ((uint64(len(scope.Contract.Container.ContainerCode[idx])) + 31) / 32)
|
||
if ok := scope.Contract.UseGas(hashingCharge, interpreter.evm.Config.Tracer, tracing.GasChangeUnspecified); !ok {
|
||
return nil, ErrGasUintOverflow
|
||
}
|
||
if interpreter.evm.Config.Tracer != nil {
|
||
if interpreter.evm.Config.Tracer != nil {
|
||
interpreter.evm.Config.Tracer.OnOpcode(*pc, byte(EOFCREATE), 0, hashingCharge, scope, interpreter.returnData, interpreter.evm.depth, nil)
|
||
}
|
||
}
|
||
gas := scope.Contract.Gas
|
||
// Reuse last popped value from stack
|
||
stackvalue := size
|
||
// Apply EIP150
|
||
gas -= gas / 64
|
||
scope.Contract.UseGas(gas, interpreter.evm.Config.Tracer, tracing.GasChangeCallContractCreation2)
|
||
// Skip the immediate
|
||
*pc += 1
|
||
res, addr, returnGas, suberr := interpreter.evm.EOFCreate(scope.Contract, input, scope.Contract.Container.ContainerCode[idx], gas, &value, &salt)
|
||
if suberr != nil {
|
||
stackvalue.Clear()
|
||
} else {
|
||
stackvalue.SetBytes(addr.Bytes())
|
||
}
|
||
scope.Stack.push(&stackvalue)
|
||
scope.Contract.RefundGas(returnGas, interpreter.evm.Config.Tracer, tracing.GasChangeCallLeftOverRefunded)
|
||
|
||
if suberr == ErrExecutionReverted {
|
||
interpreter.returnData = res // set REVERT data to return data buffer
|
||
return res, nil
|
||
}
|
||
interpreter.returnData = nil // clear dirty return data buffer
|
||
return nil, nil
|
||
}
|
||
|
||
func opReturnContract(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
if !scope.InitCodeMode {
|
||
return nil, errors.New("returncontract in non-initcode mode")
|
||
}
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
idx = code[*pc+1]
|
||
offset = scope.Stack.pop()
|
||
size = scope.Stack.pop()
|
||
)
|
||
if int(idx) >= len(scope.Contract.Container.ContainerSections) {
|
||
return nil, fmt.Errorf("invalid subcontainer")
|
||
}
|
||
ret := scope.Memory.GetPtr(offset.Uint64(), size.Uint64())
|
||
containerCode := scope.Contract.Container.ContainerCode[idx]
|
||
deployedCode := append(containerCode, ret...)
|
||
if len(deployedCode) == 0 {
|
||
return nil, errors.New("nonexistant subcontainer")
|
||
}
|
||
// Validate the subcontainer
|
||
var c Container
|
||
if err := c.UnmarshalBinary(deployedCode, true); err != nil {
|
||
return nil, err
|
||
}
|
||
if err := c.ValidateCode(interpreter.tableEOF, true); err != nil {
|
||
return nil, err
|
||
}
|
||
if len(c.Data) < c.DataSize {
|
||
return nil, errors.New("invalid subcontainer")
|
||
}
|
||
c.DataSize = len(c.Data)
|
||
// Restore context
|
||
retCtx := scope.ReturnStack.Pop()
|
||
scope.CodeSection = retCtx.Section
|
||
*pc = retCtx.Pc - 1 // account for interpreter loop
|
||
return c.MarshalBinary(), errStopToken
|
||
}
|
||
|
||
func opDataLoad(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
stackItem = scope.Stack.pop()
|
||
offset, overflow = stackItem.Uint64WithOverflow()
|
||
)
|
||
if overflow {
|
||
stackItem.Clear()
|
||
scope.Stack.push(&stackItem)
|
||
} else {
|
||
data := getData(scope.Contract.Container.Data, offset, 32)
|
||
scope.Stack.push(stackItem.SetBytes(data))
|
||
}
|
||
return nil, nil
|
||
}
|
||
|
||
func opDataLoadN(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
offset = uint64(binary.BigEndian.Uint16(code[*pc+1:]))
|
||
)
|
||
data := getData(scope.Contract.Container.Data, offset, 32)
|
||
scope.Stack.push(new(uint256.Int).SetBytes(data))
|
||
*pc += 2 // move past 2 byte immediate
|
||
return nil, nil
|
||
}
|
||
|
||
func opDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
length := len(scope.Contract.Container.Data)
|
||
item := uint256.NewInt(uint64(length))
|
||
scope.Stack.push(item)
|
||
return nil, nil
|
||
}
|
||
|
||
func opDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
memOffset = scope.Stack.pop()
|
||
offset = scope.Stack.pop()
|
||
size = scope.Stack.pop()
|
||
)
|
||
// These values are checked for overflow during memory expansion calculation
|
||
// (the memorySize function on the opcode).
|
||
data := getData(scope.Contract.Container.Data, offset.Uint64(), size.Uint64())
|
||
scope.Memory.Set(memOffset.Uint64(), size.Uint64(), data)
|
||
return nil, nil
|
||
}
|
||
|
||
func opDupN(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
index = int(code[*pc+1]) + 1
|
||
)
|
||
scope.Stack.dup(index)
|
||
*pc += 1 // move past immediate
|
||
return nil, nil
|
||
}
|
||
|
||
func opSwapN(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
index = int(code[*pc+1]) + 1
|
||
)
|
||
scope.Stack.swap(index + 1)
|
||
*pc += 1 // move past immediate
|
||
return nil, nil
|
||
}
|
||
|
||
func opExchange(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
code = scope.Contract.CodeAt(scope.CodeSection)
|
||
index = int(code[*pc+1])
|
||
n = (index >> 4) + 1
|
||
m = (index & 0x0F) + 1
|
||
)
|
||
scope.Stack.swapN(n+1, n+m+1)
|
||
*pc += 1 // move past immediate
|
||
return nil, nil
|
||
}
|
||
|
||
func opReturnDataLoad(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
var (
|
||
offset = scope.Stack.pop()
|
||
)
|
||
offset64, overflow := offset.Uint64WithOverflow()
|
||
if overflow {
|
||
offset64 = math.MaxUint64
|
||
}
|
||
scope.Stack.push(offset.SetBytes(getData(interpreter.returnData, offset64, 32)))
|
||
return nil, nil
|
||
}
|
||
|
||
func opExtCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
stack := scope.Stack
|
||
// Use all available gas
|
||
gas := interpreter.evm.callGasTemp
|
||
// Pop other call parameters.
|
||
addr, inOffset, inSize, value := stack.pop(), stack.pop(), stack.pop(), stack.pop()
|
||
toAddr := common.Address(addr.Bytes20())
|
||
if addr.ByteLen() > 20 {
|
||
return nil, errors.New("address space extension")
|
||
}
|
||
// safe a memory alloc
|
||
temp := addr
|
||
// Get the arguments from the memory.
|
||
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
|
||
|
||
if interpreter.readOnly && !value.IsZero() {
|
||
return nil, ErrWriteProtection
|
||
}
|
||
|
||
var (
|
||
ret []byte
|
||
returnGas uint64
|
||
err error
|
||
)
|
||
if interpreter.evm.callGasTemp == 0 {
|
||
// zero temp call gas indicates a min retained gas error
|
||
ret, returnGas, err = nil, 0, ErrExecutionReverted
|
||
} else {
|
||
ret, returnGas, err = interpreter.evm.Call(scope.Contract, toAddr, args, gas, &value)
|
||
}
|
||
|
||
if err == ErrExecutionReverted || err == ErrInsufficientBalance || err == ErrDepth {
|
||
temp.SetOne()
|
||
} else if err != nil {
|
||
temp.SetUint64(2)
|
||
} else {
|
||
temp.Clear()
|
||
}
|
||
stack.push(&temp)
|
||
scope.Contract.RefundGas(returnGas, interpreter.evm.Config.Tracer, tracing.GasChangeCallLeftOverRefunded)
|
||
|
||
interpreter.returnData = ret
|
||
return ret, nil
|
||
}
|
||
|
||
func opExtDelegateCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
stack := scope.Stack
|
||
// Use all available gas
|
||
gas := interpreter.evm.callGasTemp
|
||
// Pop other call parameters.
|
||
addr, inOffset, inSize := stack.pop(), stack.pop(), stack.pop()
|
||
toAddr := common.Address(addr.Bytes20())
|
||
if addr.ByteLen() > 20 {
|
||
return nil, errors.New("address space extension")
|
||
}
|
||
// safe a memory alloc
|
||
temp := addr
|
||
// Get arguments from the memory.
|
||
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
|
||
|
||
// Check that we're only calling non-legacy contracts
|
||
var (
|
||
err error
|
||
ret []byte
|
||
returnGas uint64
|
||
)
|
||
code := interpreter.evm.StateDB.GetCode(toAddr)
|
||
if !hasEOFMagic(code) {
|
||
// Delegate-calling a non-eof contract should return 1
|
||
err = ErrExecutionReverted
|
||
ret = nil
|
||
returnGas = gas
|
||
} else if interpreter.evm.callGasTemp == 0 {
|
||
// zero temp call gas indicates a min retained gas error
|
||
ret, returnGas, err = nil, 0, ErrExecutionReverted
|
||
} else {
|
||
ret, returnGas, err = interpreter.evm.DelegateCall(scope.Contract, toAddr, args, gas, true)
|
||
}
|
||
|
||
if err == ErrExecutionReverted || err == ErrDepth {
|
||
temp.SetOne()
|
||
} else if err != nil {
|
||
temp.SetUint64(2)
|
||
} else {
|
||
temp.Clear()
|
||
}
|
||
stack.push(&temp)
|
||
|
||
scope.Contract.RefundGas(returnGas, interpreter.evm.Config.Tracer, tracing.GasChangeCallLeftOverRefunded)
|
||
|
||
interpreter.returnData = ret
|
||
return ret, nil
|
||
}
|
||
|
||
func opExtStaticCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
||
stack := scope.Stack
|
||
// Use all available gas
|
||
gas := interpreter.evm.callGasTemp
|
||
// Pop other call parameters.
|
||
addr, inOffset, inSize := stack.pop(), stack.pop(), stack.pop()
|
||
toAddr := common.Address(addr.Bytes20())
|
||
if addr.ByteLen() > 20 {
|
||
return nil, errors.New("address space extension")
|
||
}
|
||
// safe a memory alloc
|
||
temp := addr
|
||
// Get arguments from the memory.
|
||
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
|
||
|
||
var (
|
||
ret []byte
|
||
returnGas uint64
|
||
err error
|
||
)
|
||
if interpreter.evm.callGasTemp == 0 {
|
||
// zero temp call gas indicates a min retained gas error
|
||
ret, returnGas, err = nil, 0, ErrExecutionReverted
|
||
} else {
|
||
ret, returnGas, err = interpreter.evm.StaticCall(scope.Contract, toAddr, args, gas)
|
||
}
|
||
|
||
if err == ErrExecutionReverted || err == ErrDepth {
|
||
temp.SetOne()
|
||
} else if err != nil {
|
||
temp.SetUint64(2)
|
||
} else {
|
||
temp.Clear()
|
||
}
|
||
stack.push(&temp)
|
||
|
||
scope.Contract.RefundGas(returnGas, interpreter.evm.Config.Tracer, tracing.GasChangeCallLeftOverRefunded)
|
||
|
||
interpreter.returnData = ret
|
||
return ret, nil
|
||
}
|