github.com/bigzoro/my_simplechain@v0.0.0-20240315012955-8ad0a2a29bb9/core/vm/eips.go (about)

     1  // Copyright 2019 The go-simplechain Authors
     2  // This file is part of the go-simplechain library.
     3  //
     4  // The go-simplechain library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-simplechain library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-simplechain library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package vm
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"github.com/bigzoro/my_simplechain/params"
    23  )
    24  
    25  // EnableEIP enables the given EIP on the config.
    26  // This operation writes in-place, and callers need to ensure that the globally
    27  // defined jump tables are not polluted.
    28  func EnableEIP(eipNum int, jt *JumpTable) error {
    29  	switch eipNum {
    30  	case 2200:
    31  		enable2200(jt)
    32  	case 1884:
    33  		enable1884(jt)
    34  	case 1344:
    35  		enable1344(jt)
    36  	default:
    37  		return fmt.Errorf("undefined eip %d", eipNum)
    38  	}
    39  	return nil
    40  }
    41  
    42  // enable1884 applies EIP-1884 to the given jump table:
    43  // - Increase cost of BALANCE to 700
    44  // - Increase cost of EXTCODEHASH to 700
    45  // - Increase cost of SLOAD to 800
    46  // - Define SELFBALANCE, with cost GasFastStep (5)
    47  func enable1884(jt *JumpTable) {
    48  	// Gas cost changes
    49  	jt[BALANCE].constantGas = params.BalanceGasEIP1884
    50  	jt[EXTCODEHASH].constantGas = params.ExtcodeHashGasEIP1884
    51  	jt[SLOAD].constantGas = params.SloadGasEIP1884
    52  
    53  	// New opcode
    54  	jt[SELFBALANCE] = operation{
    55  		execute:     opSelfBalance,
    56  		constantGas: GasFastStep,
    57  		minStack:    minStack(0, 1),
    58  		maxStack:    maxStack(0, 1),
    59  		valid:       true,
    60  	}
    61  }
    62  
    63  func enableNonce(jt *JumpTable) {
    64  	jt[NONCE] = operation{
    65  		execute:     opNonce,
    66  		constantGas: GasQuickStep,
    67  		minStack:    minStack(0, 1),
    68  		maxStack:    maxStack(0, 1),
    69  		valid:       true,
    70  	}
    71  }
    72  
    73  func opNonce(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
    74  	stack.push(interpreter.intPool.get().Set(interpreter.evm.Nonce))
    75  	return nil, nil
    76  }
    77  
    78  func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
    79  	balance := interpreter.intPool.get().Set(interpreter.evm.StateDB.GetBalance(contract.Address()))
    80  	stack.push(balance)
    81  	return nil, nil
    82  }
    83  
    84  // enable1344 applies EIP-1344 (ChainID Opcode)
    85  // - Adds an opcode that returns the current chain’s EIP-155 unique identifier
    86  func enable1344(jt *JumpTable) {
    87  	// New opcode
    88  	jt[CHAINID] = operation{
    89  		execute:     opChainID,
    90  		constantGas: GasQuickStep,
    91  		minStack:    minStack(0, 1),
    92  		maxStack:    maxStack(0, 1),
    93  		valid:       true,
    94  	}
    95  }
    96  
    97  // opChainID implements CHAINID opcode
    98  func opChainID(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
    99  	chainId := interpreter.intPool.get().Set(interpreter.evm.chainConfig.ChainID)
   100  	stack.push(chainId)
   101  	return nil, nil
   102  }
   103  
   104  // enable2200 applies EIP-2200 (Rebalance net-metered SSTORE)
   105  func enable2200(jt *JumpTable) {
   106  	jt[SSTORE].dynamicGas = gasSStoreEIP2200
   107  }