2015-07-06 19:54:22 -05:00
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// Copyright 2014 The go-ethereum Authors
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2015-07-22 11:48:40 -05:00
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// This file is part of the go-ethereum library.
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2015-07-06 19:54:22 -05:00
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//
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2015-07-23 11:35:11 -05:00
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// The go-ethereum library is free software: you can redistribute it and/or modify
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2015-07-06 19:54:22 -05:00
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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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2015-07-22 11:48:40 -05:00
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// The go-ethereum library is distributed in the hope that it will be useful,
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2015-07-06 19:54:22 -05:00
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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2015-07-22 11:48:40 -05:00
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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2015-07-06 19:54:22 -05:00
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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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2015-07-22 11:48:40 -05:00
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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2015-07-06 19:54:22 -05:00
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2014-10-18 06:31:20 -05:00
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package vm
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2014-10-14 04:48:52 -05:00
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import (
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"math/big"
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2017-01-05 04:52:10 -06:00
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"sync/atomic"
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2014-10-14 04:48:52 -05:00
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2015-03-16 05:27:38 -05:00
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"github.com/ethereum/go-ethereum/common"
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2023-07-15 10:45:57 -05:00
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"github.com/ethereum/go-ethereum/core/types"
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2016-12-05 19:16:03 -06:00
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"github.com/ethereum/go-ethereum/crypto"
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2016-10-07 17:23:45 -05:00
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"github.com/ethereum/go-ethereum/params"
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2020-07-16 07:06:19 -05:00
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"github.com/holiman/uint256"
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2014-10-14 04:48:52 -05:00
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)
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2016-12-05 19:16:03 -06:00
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type (
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2018-06-26 07:56:25 -05:00
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// CanTransferFunc is the signature of a transfer guard function
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2024-01-23 07:51:58 -06:00
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CanTransferFunc func(StateDB, common.Address, *uint256.Int) bool
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2018-06-26 07:56:25 -05:00
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// TransferFunc is the signature of a transfer function
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2024-01-23 07:51:58 -06:00
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TransferFunc func(StateDB, common.Address, common.Address, *uint256.Int)
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2019-08-07 04:53:16 -05:00
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// GetHashFunc returns the n'th block hash in the blockchain
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2016-12-05 19:16:03 -06:00
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// and is used by the BLOCKHASH EVM op code.
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GetHashFunc func(uint64) common.Hash
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)
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2020-07-16 07:06:19 -05:00
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func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) {
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var precompiles map[common.Address]PrecompiledContract
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switch {
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2023-06-05 08:43:25 -05:00
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case evm.chainRules.IsCancun:
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precompiles = PrecompiledContractsCancun
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2021-02-25 01:10:30 -06:00
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case evm.chainRules.IsBerlin:
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precompiles = PrecompiledContractsBerlin
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2020-07-16 07:06:19 -05:00
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case evm.chainRules.IsIstanbul:
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precompiles = PrecompiledContractsIstanbul
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case evm.chainRules.IsByzantium:
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precompiles = PrecompiledContractsByzantium
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default:
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precompiles = PrecompiledContractsHomestead
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}
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p, ok := precompiles[addr]
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return p, ok
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}
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2020-11-13 06:42:19 -06:00
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// BlockContext provides the EVM with auxiliary information. Once provided
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2017-02-01 15:36:51 -06:00
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// it shouldn't be modified.
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2020-11-13 06:42:19 -06:00
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type BlockContext struct {
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2016-12-05 19:16:03 -06:00
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// CanTransfer returns whether the account contains
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// sufficient ether to transfer the value
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CanTransfer CanTransferFunc
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// Transfer transfers ether from one account to the other
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Transfer TransferFunc
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// GetHash returns the hash corresponding to n
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GetHash GetHashFunc
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// Block information
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2023-10-02 04:49:29 -05:00
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Coinbase common.Address // Provides information for COINBASE
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GasLimit uint64 // Provides information for GASLIMIT
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BlockNumber *big.Int // Provides information for NUMBER
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Time uint64 // Provides information for TIME
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Difficulty *big.Int // Provides information for DIFFICULTY
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2023-11-08 03:22:08 -06:00
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BaseFee *big.Int // Provides information for BASEFEE (0 if vm runs with NoBaseFee flag and 0 gas price)
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BlobBaseFee *big.Int // Provides information for BLOBBASEFEE (0 if vm runs with NoBaseFee flag and 0 blob gas price)
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2023-10-02 04:49:29 -05:00
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Random *common.Hash // Provides information for PREVRANDAO
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2016-12-05 19:16:03 -06:00
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}
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2020-11-13 06:42:19 -06:00
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// TxContext provides the EVM with information about a transaction.
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// All fields can change between transactions.
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type TxContext struct {
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// Message information
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Origin common.Address // Provides information for ORIGIN
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GasPrice *big.Int // Provides information for GASPRICE (and is used to zero the basefee if NoBaseFee is set)
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2023-06-05 08:43:25 -05:00
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BlobHashes []common.Hash // Provides information for BLOBHASH
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2023-11-08 03:22:08 -06:00
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BlobFeeCap *big.Int // Is used to zero the blobbasefee if NoBaseFee is set
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2020-11-13 06:42:19 -06:00
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}
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2017-02-01 15:36:51 -06:00
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// EVM is the Ethereum Virtual Machine base object and provides
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// the necessary tools to run a contract on the given state with
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// the provided context. It should be noted that any error
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// generated through any of the calls should be considered a
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// revert-state-and-consume-all-gas operation, no checks on
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// specific errors should ever be performed. The interpreter makes
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// sure that any errors generated are to be considered faulty code.
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2016-12-05 19:16:03 -06:00
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//
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2017-01-05 04:52:10 -06:00
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// The EVM should never be reused and is not thread safe.
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type EVM struct {
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2016-12-05 19:16:03 -06:00
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// Context provides auxiliary blockchain related information
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2020-11-13 06:42:19 -06:00
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Context BlockContext
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TxContext
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2016-12-05 19:16:03 -06:00
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// StateDB gives access to the underlying state
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StateDB StateDB
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// Depth is the current call stack
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2017-01-05 04:52:10 -06:00
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depth int
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2016-12-05 19:16:03 -06:00
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// chainConfig contains information about the current chain
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chainConfig *params.ChainConfig
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2017-02-01 15:36:51 -06:00
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// chain rules contains the chain rules for the current epoch
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chainRules params.Rules
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2017-01-05 04:52:10 -06:00
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// virtual machine configuration options used to initialise the
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// evm.
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2021-06-10 00:02:51 -05:00
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Config Config
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2017-01-05 04:52:10 -06:00
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// global (to this context) ethereum virtual machine
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// used throughout the execution of the tx.
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2021-07-06 15:03:09 -05:00
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interpreter *EVMInterpreter
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2017-01-05 04:52:10 -06:00
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// abort is used to abort the EVM calling operations
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2023-03-27 08:40:20 -05:00
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abort atomic.Bool
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2017-11-28 13:05:49 -06:00
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// callGasTemp holds the gas available for the current call. This is needed because the
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// available gas is calculated in gasCall* according to the 63/64 rule and later
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// applied in opCall*.
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callGasTemp uint64
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2016-12-05 19:16:03 -06:00
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}
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2018-03-26 08:40:00 -05:00
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// NewEVM returns a new EVM. The returned EVM is not thread safe and should
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2017-08-10 06:07:11 -05:00
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// only ever be used *once*.
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2021-06-10 00:02:51 -05:00
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func NewEVM(blockCtx BlockContext, txCtx TxContext, statedb StateDB, chainConfig *params.ChainConfig, config Config) *EVM {
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2023-11-08 03:22:08 -06:00
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// If basefee tracking is disabled (eth_call, eth_estimateGas, etc), and no
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// gas prices were specified, lower the basefee to 0 to avoid breaking EVM
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// invariants (basefee < feecap)
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if config.NoBaseFee {
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if txCtx.GasPrice.BitLen() == 0 {
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blockCtx.BaseFee = new(big.Int)
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}
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if txCtx.BlobFeeCap != nil && txCtx.BlobFeeCap.BitLen() == 0 {
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blockCtx.BlobBaseFee = new(big.Int)
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}
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}
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2017-01-05 04:52:10 -06:00
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evm := &EVM{
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2021-07-06 15:03:09 -05:00
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Context: blockCtx,
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TxContext: txCtx,
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StateDB: statedb,
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Config: config,
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chainConfig: chainConfig,
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2022-09-27 06:42:57 -05:00
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chainRules: chainConfig.Rules(blockCtx.BlockNumber, blockCtx.Random != nil, blockCtx.Time),
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2021-07-06 15:03:09 -05:00
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}
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2023-02-05 08:11:25 -06:00
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evm.interpreter = NewEVMInterpreter(evm)
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2017-01-05 04:52:10 -06:00
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return evm
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}
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2020-11-13 06:42:19 -06:00
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// Reset resets the EVM with a new transaction context.Reset
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// This is not threadsafe and should only be done very cautiously.
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func (evm *EVM) Reset(txCtx TxContext, statedb StateDB) {
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evm.TxContext = txCtx
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evm.StateDB = statedb
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}
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2017-02-01 15:36:51 -06:00
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// Cancel cancels any running EVM operation. This may be called concurrently and
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// it's safe to be called multiple times.
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2017-01-05 04:52:10 -06:00
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func (evm *EVM) Cancel() {
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2023-03-27 08:40:20 -05:00
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evm.abort.Store(true)
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2016-12-05 19:16:03 -06:00
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}
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2019-06-24 03:54:06 -05:00
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// Cancelled returns true if Cancel has been called
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func (evm *EVM) Cancelled() bool {
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2023-03-27 08:40:20 -05:00
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return evm.abort.Load()
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2019-06-24 03:54:06 -05:00
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}
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2018-07-25 07:56:39 -05:00
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// Interpreter returns the current interpreter
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2021-07-06 15:03:09 -05:00
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func (evm *EVM) Interpreter() *EVMInterpreter {
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2018-07-25 07:56:39 -05:00
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return evm.interpreter
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}
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2017-08-15 04:56:09 -05:00
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// Call executes the contract associated with the addr with the given input as
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// parameters. It also handles any necessary value transfer required and takes
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// the necessary steps to create accounts and reverses the state in case of an
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// execution error or failed value transfer.
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2024-01-23 07:51:58 -06:00
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func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas uint64, value *uint256.Int) (ret []byte, leftOverGas uint64, err error) {
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2017-08-15 04:56:09 -05:00
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// Fail if we're trying to execute above the call depth limit
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2017-01-04 13:17:24 -06:00
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if evm.depth > int(params.CallCreateDepth) {
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return nil, gas, ErrDepth
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2016-12-05 19:16:03 -06:00
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}
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2017-08-15 04:56:09 -05:00
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// Fail if we're trying to transfer more than the available balance
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2024-02-07 10:01:38 -06:00
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if !value.IsZero() && !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) {
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2017-01-04 13:17:24 -06:00
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return nil, gas, ErrInsufficientBalance
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2016-12-05 19:16:03 -06:00
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}
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2020-07-16 07:06:19 -05:00
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snapshot := evm.StateDB.Snapshot()
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p, isPrecompile := evm.precompile(addr)
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2023-04-04 08:50:13 -05:00
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debug := evm.Config.Tracer != nil
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2020-07-16 07:06:19 -05:00
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2017-01-05 04:52:10 -06:00
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if !evm.StateDB.Exist(addr) {
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2024-02-07 10:01:38 -06:00
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if !isPrecompile && evm.chainRules.IsEIP158 && value.IsZero() {
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2018-08-06 03:42:49 -05:00
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// Calling a non existing account, don't do anything, but ping the tracer
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2023-04-04 08:50:13 -05:00
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if debug {
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2021-11-01 13:06:33 -05:00
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if evm.depth == 0 {
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2024-01-23 07:51:58 -06:00
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evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value.ToBig())
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2022-12-05 09:57:47 -06:00
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evm.Config.Tracer.CaptureEnd(ret, 0, nil)
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2021-11-01 13:06:33 -05:00
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} else {
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2024-01-23 07:51:58 -06:00
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evm.Config.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value.ToBig())
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2021-11-01 13:06:33 -05:00
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evm.Config.Tracer.CaptureExit(ret, 0, nil)
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}
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2018-04-27 06:27:33 -05:00
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}
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2017-01-04 13:17:24 -06:00
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return nil, gas, nil
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2016-12-05 19:16:03 -06:00
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}
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2017-02-22 16:29:59 -06:00
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evm.StateDB.CreateAccount(addr)
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2016-12-05 19:16:03 -06:00
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}
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2020-11-13 06:42:19 -06:00
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evm.Context.Transfer(evm.StateDB, caller.Address(), addr, value)
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cmd, core, eth/tracers: support fancier js tracing (#15516)
* cmd, core, eth/tracers: support fancier js tracing
* eth, internal/web3ext: rework trace API, concurrency, chain tracing
* eth/tracers: add three more JavaScript tracers
* eth/tracers, vendor: swap ottovm to duktape for tracing
* core, eth, internal: finalize call tracer and needed extras
* eth, tests: prestate tracer, call test suite, rewinding
* vendor: fix windows builds for tracer js engine
* vendor: temporary duktape fix
* eth/tracers: fix up 4byte and evmdis tracer
* vendor: pull in latest duktape with my upstream fixes
* eth: fix some review comments
* eth: rename rewind to reexec to make it more obvious
* core/vm: terminate tracing using defers
2017-12-21 05:56:11 -06:00
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// Capture the tracer start/end events in debug mode
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2023-04-04 08:50:13 -05:00
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if debug {
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core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
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if evm.depth == 0 {
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2024-01-23 07:51:58 -06:00
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evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value.ToBig())
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2022-12-05 09:57:47 -06:00
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defer func(startGas uint64) { // Lazy evaluation of the parameters
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evm.Config.Tracer.CaptureEnd(ret, startGas-gas, err)
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}(gas)
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core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
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} else {
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// Handle tracer events for entering and exiting a call frame
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2024-01-23 07:51:58 -06:00
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evm.Config.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value.ToBig())
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core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
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defer func(startGas uint64) {
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evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
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}(gas)
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}
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cmd, core, eth/tracers: support fancier js tracing (#15516)
* cmd, core, eth/tracers: support fancier js tracing
* eth, internal/web3ext: rework trace API, concurrency, chain tracing
* eth/tracers: add three more JavaScript tracers
* eth/tracers, vendor: swap ottovm to duktape for tracing
* core, eth, internal: finalize call tracer and needed extras
* eth, tests: prestate tracer, call test suite, rewinding
* vendor: fix windows builds for tracer js engine
* vendor: temporary duktape fix
* eth/tracers: fix up 4byte and evmdis tracer
* vendor: pull in latest duktape with my upstream fixes
* eth: fix some review comments
* eth: rename rewind to reexec to make it more obvious
* core/vm: terminate tracing using defers
2017-12-21 05:56:11 -06:00
|
|
|
}
|
|
|
|
|
2020-07-16 07:06:19 -05:00
|
|
|
if isPrecompile {
|
|
|
|
ret, gas, err = RunPrecompiledContract(p, input, gas)
|
|
|
|
} else {
|
|
|
|
// Initialise a new contract and set the code that is to be used by the EVM.
|
|
|
|
// The contract is a scoped environment for this execution context only.
|
|
|
|
code := evm.StateDB.GetCode(addr)
|
|
|
|
if len(code) == 0 {
|
|
|
|
ret, err = nil, nil // gas is unchanged
|
|
|
|
} else {
|
|
|
|
addrCopy := addr
|
|
|
|
// If the account has no code, we can abort here
|
|
|
|
// The depth-check is already done, and precompiles handled above
|
|
|
|
contract := NewContract(caller, AccountRef(addrCopy), value, gas)
|
|
|
|
contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), code)
|
2021-07-06 15:03:09 -05:00
|
|
|
ret, err = evm.interpreter.Run(contract, input, false)
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = contract.Gas
|
|
|
|
}
|
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
// When an error was returned by the EVM or when setting the creation code
|
|
|
|
// above we revert to the snapshot and consume any gas remaining. Additionally
|
|
|
|
// when we're in homestead this also counts for code storage gas errors.
|
|
|
|
if err != nil {
|
2017-01-05 04:52:10 -06:00
|
|
|
evm.StateDB.RevertToSnapshot(snapshot)
|
2020-04-22 03:25:36 -05:00
|
|
|
if err != ErrExecutionReverted {
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = 0
|
2017-08-16 09:09:29 -05:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
// TODO: consider clearing up unused snapshots:
|
|
|
|
//} else {
|
|
|
|
// evm.StateDB.DiscardSnapshot(snapshot)
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
return ret, gas, err
|
2015-08-30 03:19:10 -05:00
|
|
|
}
|
|
|
|
|
2017-08-15 04:56:09 -05:00
|
|
|
// CallCode executes the contract associated with the addr with the given input
|
|
|
|
// as parameters. It also handles any necessary value transfer required and takes
|
|
|
|
// the necessary steps to create accounts and reverses the state in case of an
|
|
|
|
// execution error or failed value transfer.
|
2016-12-05 19:16:03 -06:00
|
|
|
//
|
2017-08-15 04:56:09 -05:00
|
|
|
// CallCode differs from Call in the sense that it executes the given address'
|
|
|
|
// code with the caller as context.
|
2024-01-23 07:51:58 -06:00
|
|
|
func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte, gas uint64, value *uint256.Int) (ret []byte, leftOverGas uint64, err error) {
|
2017-08-15 04:56:09 -05:00
|
|
|
// Fail if we're trying to execute above the call depth limit
|
2017-01-04 13:17:24 -06:00
|
|
|
if evm.depth > int(params.CallCreateDepth) {
|
|
|
|
return nil, gas, ErrDepth
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2017-08-15 04:56:09 -05:00
|
|
|
// Fail if we're trying to transfer more than the available balance
|
2020-04-22 03:25:36 -05:00
|
|
|
// Note although it's noop to transfer X ether to caller itself. But
|
|
|
|
// if caller doesn't have enough balance, it would be an error to allow
|
|
|
|
// over-charging itself. So the check here is necessary.
|
|
|
|
if !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) {
|
2017-01-04 13:17:24 -06:00
|
|
|
return nil, gas, ErrInsufficientBalance
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
var snapshot = evm.StateDB.Snapshot()
|
|
|
|
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
// Invoke tracer hooks that signal entering/exiting a call frame
|
2023-04-04 08:50:13 -05:00
|
|
|
if evm.Config.Tracer != nil {
|
2024-01-23 07:51:58 -06:00
|
|
|
evm.Config.Tracer.CaptureEnter(CALLCODE, caller.Address(), addr, input, gas, value.ToBig())
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
defer func(startGas uint64) {
|
|
|
|
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
|
|
|
|
}(gas)
|
|
|
|
}
|
|
|
|
|
2020-07-16 07:06:19 -05:00
|
|
|
// It is allowed to call precompiles, even via delegatecall
|
|
|
|
if p, isPrecompile := evm.precompile(addr); isPrecompile {
|
|
|
|
ret, gas, err = RunPrecompiledContract(p, input, gas)
|
|
|
|
} else {
|
|
|
|
addrCopy := addr
|
|
|
|
// Initialise a new contract and set the code that is to be used by the EVM.
|
|
|
|
// The contract is a scoped environment for this execution context only.
|
|
|
|
contract := NewContract(caller, AccountRef(caller.Address()), value, gas)
|
|
|
|
contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), evm.StateDB.GetCode(addrCopy))
|
2021-07-06 15:03:09 -05:00
|
|
|
ret, err = evm.interpreter.Run(contract, input, false)
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = contract.Gas
|
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
if err != nil {
|
2017-01-05 04:52:10 -06:00
|
|
|
evm.StateDB.RevertToSnapshot(snapshot)
|
2020-04-22 03:25:36 -05:00
|
|
|
if err != ErrExecutionReverted {
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = 0
|
2017-08-16 09:09:29 -05:00
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
return ret, gas, err
|
2016-02-03 16:46:27 -06:00
|
|
|
}
|
|
|
|
|
2017-08-15 04:56:09 -05:00
|
|
|
// DelegateCall executes the contract associated with the addr with the given input
|
|
|
|
// as parameters. It reverses the state in case of an execution error.
|
2016-12-05 19:16:03 -06:00
|
|
|
//
|
2017-08-15 04:56:09 -05:00
|
|
|
// DelegateCall differs from CallCode in the sense that it executes the given address'
|
|
|
|
// code with the caller as context and the caller is set to the caller of the caller.
|
2017-01-04 13:17:24 -06:00
|
|
|
func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []byte, gas uint64) (ret []byte, leftOverGas uint64, err error) {
|
2017-08-15 04:56:09 -05:00
|
|
|
// Fail if we're trying to execute above the call depth limit
|
2017-01-04 13:17:24 -06:00
|
|
|
if evm.depth > int(params.CallCreateDepth) {
|
|
|
|
return nil, gas, ErrDepth
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
var snapshot = evm.StateDB.Snapshot()
|
|
|
|
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
// Invoke tracer hooks that signal entering/exiting a call frame
|
2023-04-04 08:50:13 -05:00
|
|
|
if evm.Config.Tracer != nil {
|
2023-02-10 03:26:43 -06:00
|
|
|
// NOTE: caller must, at all times be a contract. It should never happen
|
|
|
|
// that caller is something other than a Contract.
|
|
|
|
parent := caller.(*Contract)
|
|
|
|
// DELEGATECALL inherits value from parent call
|
2024-01-23 07:51:58 -06:00
|
|
|
evm.Config.Tracer.CaptureEnter(DELEGATECALL, caller.Address(), addr, input, gas, parent.value.ToBig())
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
defer func(startGas uint64) {
|
|
|
|
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
|
|
|
|
}(gas)
|
|
|
|
}
|
|
|
|
|
2020-07-16 07:06:19 -05:00
|
|
|
// It is allowed to call precompiles, even via delegatecall
|
|
|
|
if p, isPrecompile := evm.precompile(addr); isPrecompile {
|
|
|
|
ret, gas, err = RunPrecompiledContract(p, input, gas)
|
|
|
|
} else {
|
|
|
|
addrCopy := addr
|
|
|
|
// Initialise a new contract and make initialise the delegate values
|
|
|
|
contract := NewContract(caller, AccountRef(caller.Address()), nil, gas).AsDelegate()
|
|
|
|
contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), evm.StateDB.GetCode(addrCopy))
|
2021-07-06 15:03:09 -05:00
|
|
|
ret, err = evm.interpreter.Run(contract, input, false)
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = contract.Gas
|
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
if err != nil {
|
2017-01-05 04:52:10 -06:00
|
|
|
evm.StateDB.RevertToSnapshot(snapshot)
|
2020-04-22 03:25:36 -05:00
|
|
|
if err != ErrExecutionReverted {
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = 0
|
2017-08-16 09:09:29 -05:00
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
return ret, gas, err
|
2014-10-14 04:48:52 -05:00
|
|
|
}
|
|
|
|
|
2017-08-15 04:56:09 -05:00
|
|
|
// StaticCall executes the contract associated with the addr with the given input
|
|
|
|
// as parameters while disallowing any modifications to the state during the call.
|
|
|
|
// Opcodes that attempt to perform such modifications will result in exceptions
|
|
|
|
// instead of performing the modifications.
|
2017-08-15 03:23:23 -05:00
|
|
|
func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte, gas uint64) (ret []byte, leftOverGas uint64, err error) {
|
2017-08-15 04:56:09 -05:00
|
|
|
// Fail if we're trying to execute above the call depth limit
|
2017-08-15 03:23:23 -05:00
|
|
|
if evm.depth > int(params.CallCreateDepth) {
|
|
|
|
return nil, gas, ErrDepth
|
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
// We take a snapshot here. This is a bit counter-intuitive, and could probably be skipped.
|
|
|
|
// However, even a staticcall is considered a 'touch'. On mainnet, static calls were introduced
|
|
|
|
// after all empty accounts were deleted, so this is not required. However, if we omit this,
|
|
|
|
// then certain tests start failing; stRevertTest/RevertPrecompiledTouchExactOOG.json.
|
|
|
|
// We could change this, but for now it's left for legacy reasons
|
|
|
|
var snapshot = evm.StateDB.Snapshot()
|
2017-08-15 03:23:23 -05:00
|
|
|
|
2018-11-29 02:51:57 -06:00
|
|
|
// We do an AddBalance of zero here, just in order to trigger a touch.
|
|
|
|
// This doesn't matter on Mainnet, where all empties are gone at the time of Byzantium,
|
|
|
|
// but is the correct thing to do and matters on other networks, in tests, and potential
|
|
|
|
// future scenarios
|
2024-01-23 07:51:58 -06:00
|
|
|
evm.StateDB.AddBalance(addr, new(uint256.Int))
|
2020-07-16 07:06:19 -05:00
|
|
|
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
// Invoke tracer hooks that signal entering/exiting a call frame
|
2023-04-04 08:50:13 -05:00
|
|
|
if evm.Config.Tracer != nil {
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
evm.Config.Tracer.CaptureEnter(STATICCALL, caller.Address(), addr, input, gas, nil)
|
|
|
|
defer func(startGas uint64) {
|
|
|
|
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
|
|
|
|
}(gas)
|
|
|
|
}
|
|
|
|
|
2020-07-16 07:06:19 -05:00
|
|
|
if p, isPrecompile := evm.precompile(addr); isPrecompile {
|
|
|
|
ret, gas, err = RunPrecompiledContract(p, input, gas)
|
|
|
|
} else {
|
|
|
|
// At this point, we use a copy of address. If we don't, the go compiler will
|
|
|
|
// leak the 'contract' to the outer scope, and make allocation for 'contract'
|
|
|
|
// even if the actual execution ends on RunPrecompiled above.
|
|
|
|
addrCopy := addr
|
|
|
|
// Initialise a new contract and set the code that is to be used by the EVM.
|
|
|
|
// The contract is a scoped environment for this execution context only.
|
2024-01-23 07:51:58 -06:00
|
|
|
contract := NewContract(caller, AccountRef(addrCopy), new(uint256.Int), gas)
|
2020-07-16 07:06:19 -05:00
|
|
|
contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), evm.StateDB.GetCode(addrCopy))
|
|
|
|
// When an error was returned by the EVM or when setting the creation code
|
|
|
|
// above we revert to the snapshot and consume any gas remaining. Additionally
|
|
|
|
// when we're in Homestead this also counts for code storage gas errors.
|
2021-07-06 15:03:09 -05:00
|
|
|
ret, err = evm.interpreter.Run(contract, input, true)
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = contract.Gas
|
|
|
|
}
|
2017-08-15 03:23:23 -05:00
|
|
|
if err != nil {
|
|
|
|
evm.StateDB.RevertToSnapshot(snapshot)
|
2020-04-22 03:25:36 -05:00
|
|
|
if err != ErrExecutionReverted {
|
2020-07-16 07:06:19 -05:00
|
|
|
gas = 0
|
2017-08-16 09:09:29 -05:00
|
|
|
}
|
2017-08-15 03:23:23 -05:00
|
|
|
}
|
2020-07-16 07:06:19 -05:00
|
|
|
return ret, gas, err
|
2017-08-15 03:23:23 -05:00
|
|
|
}
|
|
|
|
|
2018-10-04 10:15:37 -05:00
|
|
|
type codeAndHash struct {
|
|
|
|
code []byte
|
|
|
|
hash common.Hash
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *codeAndHash) Hash() common.Hash {
|
|
|
|
if c.hash == (common.Hash{}) {
|
|
|
|
c.hash = crypto.Keccak256Hash(c.code)
|
|
|
|
}
|
|
|
|
return c.hash
|
|
|
|
}
|
|
|
|
|
2018-07-24 09:22:03 -05:00
|
|
|
// create creates a new contract using code as deployment code.
|
2024-01-23 07:51:58 -06:00
|
|
|
func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *uint256.Int, address common.Address, typ OpCode) ([]byte, common.Address, uint64, error) {
|
2016-12-05 19:16:03 -06:00
|
|
|
// Depth check execution. Fail if we're trying to execute above the
|
|
|
|
// limit.
|
2017-01-04 13:17:24 -06:00
|
|
|
if evm.depth > int(params.CallCreateDepth) {
|
|
|
|
return nil, common.Address{}, gas, ErrDepth
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-11-13 06:42:19 -06:00
|
|
|
if !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) {
|
2017-01-04 13:17:24 -06:00
|
|
|
return nil, common.Address{}, gas, ErrInsufficientBalance
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2017-01-05 04:52:10 -06:00
|
|
|
nonce := evm.StateDB.GetNonce(caller.Address())
|
2021-11-11 08:00:58 -06:00
|
|
|
if nonce+1 < nonce {
|
|
|
|
return nil, common.Address{}, gas, ErrNonceUintOverflow
|
|
|
|
}
|
2017-01-05 04:52:10 -06:00
|
|
|
evm.StateDB.SetNonce(caller.Address(), nonce+1)
|
2020-10-23 01:26:57 -05:00
|
|
|
// We add this to the access list _before_ taking a snapshot. Even if the creation fails,
|
|
|
|
// the access-list change should not be rolled back
|
2021-02-25 01:10:30 -06:00
|
|
|
if evm.chainRules.IsBerlin {
|
2020-10-23 01:26:57 -05:00
|
|
|
evm.StateDB.AddAddressToAccessList(address)
|
|
|
|
}
|
2018-07-24 09:22:03 -05:00
|
|
|
// Ensure there's no existing contract already at the designated address
|
|
|
|
contractHash := evm.StateDB.GetCodeHash(address)
|
2023-07-15 10:45:57 -05:00
|
|
|
if evm.StateDB.GetNonce(address) != 0 || (contractHash != (common.Hash{}) && contractHash != types.EmptyCodeHash) {
|
2017-08-25 04:30:51 -05:00
|
|
|
return nil, common.Address{}, 0, ErrContractAddressCollision
|
|
|
|
}
|
|
|
|
// Create a new account on the state
|
|
|
|
snapshot := evm.StateDB.Snapshot()
|
2018-07-24 09:22:03 -05:00
|
|
|
evm.StateDB.CreateAccount(address)
|
2019-08-05 03:01:02 -05:00
|
|
|
if evm.chainRules.IsEIP158 {
|
2018-07-24 09:22:03 -05:00
|
|
|
evm.StateDB.SetNonce(address, 1)
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2020-11-13 06:42:19 -06:00
|
|
|
evm.Context.Transfer(evm.StateDB, caller.Address(), address, value)
|
2016-12-05 19:16:03 -06:00
|
|
|
|
2019-02-18 05:14:49 -06:00
|
|
|
// Initialise a new contract and set the code that is to be used by the EVM.
|
|
|
|
// The contract is a scoped environment for this execution context only.
|
2018-07-24 09:22:03 -05:00
|
|
|
contract := NewContract(caller, AccountRef(address), value, gas)
|
2018-10-04 10:15:37 -05:00
|
|
|
contract.SetCodeOptionalHash(&address, codeAndHash)
|
2016-12-05 19:16:03 -06:00
|
|
|
|
2023-04-04 08:50:13 -05:00
|
|
|
if evm.Config.Tracer != nil {
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
if evm.depth == 0 {
|
2024-01-23 07:51:58 -06:00
|
|
|
evm.Config.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value.ToBig())
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
} else {
|
2024-01-23 07:51:58 -06:00
|
|
|
evm.Config.Tracer.CaptureEnter(typ, caller.Address(), address, codeAndHash.code, gas, value.ToBig())
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
}
|
cmd, core, eth/tracers: support fancier js tracing (#15516)
* cmd, core, eth/tracers: support fancier js tracing
* eth, internal/web3ext: rework trace API, concurrency, chain tracing
* eth/tracers: add three more JavaScript tracers
* eth/tracers, vendor: swap ottovm to duktape for tracing
* core, eth, internal: finalize call tracer and needed extras
* eth, tests: prestate tracer, call test suite, rewinding
* vendor: fix windows builds for tracer js engine
* vendor: temporary duktape fix
* eth/tracers: fix up 4byte and evmdis tracer
* vendor: pull in latest duktape with my upstream fixes
* eth: fix some review comments
* eth: rename rewind to reexec to make it more obvious
* core/vm: terminate tracing using defers
2017-12-21 05:56:11 -06:00
|
|
|
}
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
|
2021-07-06 15:03:09 -05:00
|
|
|
ret, err := evm.interpreter.Run(contract, nil, false)
|
cmd, core, eth/tracers: support fancier js tracing (#15516)
* cmd, core, eth/tracers: support fancier js tracing
* eth, internal/web3ext: rework trace API, concurrency, chain tracing
* eth/tracers: add three more JavaScript tracers
* eth/tracers, vendor: swap ottovm to duktape for tracing
* core, eth, internal: finalize call tracer and needed extras
* eth, tests: prestate tracer, call test suite, rewinding
* vendor: fix windows builds for tracer js engine
* vendor: temporary duktape fix
* eth/tracers: fix up 4byte and evmdis tracer
* vendor: pull in latest duktape with my upstream fixes
* eth: fix some review comments
* eth: rename rewind to reexec to make it more obvious
* core/vm: terminate tracing using defers
2017-12-21 05:56:11 -06:00
|
|
|
|
2021-05-01 06:19:24 -05:00
|
|
|
// Check whether the max code size has been exceeded, assign err if the case.
|
|
|
|
if err == nil && evm.chainRules.IsEIP158 && len(ret) > params.MaxCodeSize {
|
|
|
|
err = ErrMaxCodeSizeExceeded
|
|
|
|
}
|
|
|
|
|
2021-04-29 04:46:03 -05:00
|
|
|
// Reject code starting with 0xEF if EIP-3541 is enabled.
|
|
|
|
if err == nil && len(ret) >= 1 && ret[0] == 0xEF && evm.chainRules.IsLondon {
|
|
|
|
err = ErrInvalidCode
|
|
|
|
}
|
|
|
|
|
2016-12-05 19:16:03 -06:00
|
|
|
// if the contract creation ran successfully and no errors were returned
|
|
|
|
// calculate the gas required to store the code. If the code could not
|
|
|
|
// be stored due to not enough gas set an error and let it be handled
|
|
|
|
// by the error checking condition below.
|
2021-05-01 06:19:24 -05:00
|
|
|
if err == nil {
|
2017-01-04 13:17:24 -06:00
|
|
|
createDataGas := uint64(len(ret)) * params.CreateDataGas
|
|
|
|
if contract.UseGas(createDataGas) {
|
2018-07-24 09:22:03 -05:00
|
|
|
evm.StateDB.SetCode(address, ret)
|
2016-12-05 19:16:03 -06:00
|
|
|
} else {
|
2017-01-05 04:52:10 -06:00
|
|
|
err = ErrCodeStoreOutOfGas
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// When an error was returned by the EVM or when setting the creation code
|
|
|
|
// above we revert to the snapshot and consume any gas remaining. Additionally
|
|
|
|
// when we're in homestead this also counts for code storage gas errors.
|
2021-05-01 06:19:24 -05:00
|
|
|
if err != nil && (evm.chainRules.IsHomestead || err != ErrCodeStoreOutOfGas) {
|
2017-01-05 04:52:10 -06:00
|
|
|
evm.StateDB.RevertToSnapshot(snapshot)
|
2020-04-22 03:25:36 -05:00
|
|
|
if err != ErrExecutionReverted {
|
2017-08-16 09:09:29 -05:00
|
|
|
contract.UseGas(contract.Gas)
|
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
}
|
2021-05-01 06:19:24 -05:00
|
|
|
|
2023-04-04 08:50:13 -05:00
|
|
|
if evm.Config.Tracer != nil {
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
if evm.depth == 0 {
|
2022-12-05 09:57:47 -06:00
|
|
|
evm.Config.Tracer.CaptureEnd(ret, gas-contract.Gas, err)
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
} else {
|
|
|
|
evm.Config.Tracer.CaptureExit(ret, gas-contract.Gas, err)
|
|
|
|
}
|
cmd, core, eth/tracers: support fancier js tracing (#15516)
* cmd, core, eth/tracers: support fancier js tracing
* eth, internal/web3ext: rework trace API, concurrency, chain tracing
* eth/tracers: add three more JavaScript tracers
* eth/tracers, vendor: swap ottovm to duktape for tracing
* core, eth, internal: finalize call tracer and needed extras
* eth, tests: prestate tracer, call test suite, rewinding
* vendor: fix windows builds for tracer js engine
* vendor: temporary duktape fix
* eth/tracers: fix up 4byte and evmdis tracer
* vendor: pull in latest duktape with my upstream fixes
* eth: fix some review comments
* eth: rename rewind to reexec to make it more obvious
* core/vm: terminate tracing using defers
2017-12-21 05:56:11 -06:00
|
|
|
}
|
2018-07-24 09:22:03 -05:00
|
|
|
return ret, address, contract.Gas, err
|
|
|
|
}
|
|
|
|
|
|
|
|
// Create creates a new contract using code as deployment code.
|
2024-01-23 07:51:58 -06:00
|
|
|
func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) {
|
2018-07-24 09:22:03 -05:00
|
|
|
contractAddr = crypto.CreateAddress(caller.Address(), evm.StateDB.GetNonce(caller.Address()))
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr, CREATE)
|
2018-07-24 09:22:03 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
// Create2 creates a new contract using code as deployment code.
|
|
|
|
//
|
2021-11-30 03:34:34 -06:00
|
|
|
// The different between Create2 with Create is Create2 uses keccak256(0xff ++ msg.sender ++ salt ++ keccak256(init_code))[12:]
|
2018-07-24 09:22:03 -05:00
|
|
|
// instead of the usual sender-and-nonce-hash as the address where the contract is initialized at.
|
2024-01-23 07:51:58 -06:00
|
|
|
func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *uint256.Int, salt *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) {
|
2018-10-04 10:15:37 -05:00
|
|
|
codeAndHash := &codeAndHash{code: code}
|
2020-11-25 14:00:23 -06:00
|
|
|
contractAddr = crypto.CreateAddress2(caller.Address(), salt.Bytes32(), codeAndHash.Hash().Bytes())
|
core,eth: call frame tracing (#23087)
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
2021-09-17 02:31:22 -05:00
|
|
|
return evm.create(caller, codeAndHash, gas, endowment, contractAddr, CREATE2)
|
2014-10-22 08:22:21 -05:00
|
|
|
}
|
2016-12-05 19:16:03 -06:00
|
|
|
|
2018-01-16 09:45:13 -06:00
|
|
|
// ChainConfig returns the environment's chain configuration
|
2017-01-05 04:52:10 -06:00
|
|
|
func (evm *EVM) ChainConfig() *params.ChainConfig { return evm.chainConfig }
|