gitee.com/liu-zhao234568/cntest@v1.0.0/core/vm/jump_table.go (about)

     1  // Copyright 2015 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum 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-ethereum 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-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package vm
    18  
    19  import (
    20  	"gitee.com/liu-zhao234568/cntest/params"
    21  )
    22  
    23  type (
    24  	executionFunc func(pc *uint64, interpreter *EVMInterpreter, callContext *ScopeContext) ([]byte, error)
    25  	gasFunc       func(*EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64
    26  	// memorySizeFunc returns the required size, and whether the operation overflowed a uint64
    27  	memorySizeFunc func(*Stack) (size uint64, overflow bool)
    28  )
    29  
    30  type operation struct {
    31  	// execute is the operation function
    32  	execute     executionFunc
    33  	constantGas uint64
    34  	dynamicGas  gasFunc
    35  	// minStack tells how many stack items are required
    36  	minStack int
    37  	// maxStack specifies the max length the stack can have for this operation
    38  	// to not overflow the stack.
    39  	maxStack int
    40  
    41  	// memorySize returns the memory size required for the operation
    42  	memorySize memorySizeFunc
    43  
    44  	halts   bool // indicates whether the operation should halt further execution
    45  	jumps   bool // indicates whether the program counter should not increment
    46  	writes  bool // determines whether this a state modifying operation
    47  	reverts bool // determines whether the operation reverts state (implicitly halts)
    48  	returns bool // determines whether the operations sets the return data content
    49  }
    50  
    51  var (
    52  	frontierInstructionSet         = newFrontierInstructionSet()
    53  	homesteadInstructionSet        = newHomesteadInstructionSet()
    54  	tangerineWhistleInstructionSet = newTangerineWhistleInstructionSet()
    55  	spuriousDragonInstructionSet   = newSpuriousDragonInstructionSet()
    56  	byzantiumInstructionSet        = newByzantiumInstructionSet()
    57  	constantinopleInstructionSet   = newConstantinopleInstructionSet()
    58  	istanbulInstructionSet         = newIstanbulInstructionSet()
    59  	berlinInstructionSet           = newBerlinInstructionSet()
    60  	londonInstructionSet           = newLondonInstructionSet()
    61  )
    62  
    63  // JumpTable contains the EVM opcodes supported at a given fork.
    64  type JumpTable [256]*operation
    65  
    66  // newLondonInstructionSet returns the frontier, homestead, byzantium,
    67  // contantinople, istanbul, petersburg, berlin and london instructions.
    68  func newLondonInstructionSet() JumpTable {
    69  	instructionSet := newBerlinInstructionSet()
    70  	enable3529(&instructionSet) // EIP-3529: Reduction in refunds https://eips.ethereum.org/EIPS/eip-3529
    71  	enable3198(&instructionSet) // Base fee opcode https://eips.ethereum.org/EIPS/eip-3198
    72  	return instructionSet
    73  }
    74  
    75  // newBerlinInstructionSet returns the frontier, homestead, byzantium,
    76  // contantinople, istanbul, petersburg and berlin instructions.
    77  func newBerlinInstructionSet() JumpTable {
    78  	instructionSet := newIstanbulInstructionSet()
    79  	enable2929(&instructionSet) // Access lists for trie accesses https://eips.ethereum.org/EIPS/eip-2929
    80  	return instructionSet
    81  }
    82  
    83  // newIstanbulInstructionSet returns the frontier, homestead, byzantium,
    84  // contantinople, istanbul and petersburg instructions.
    85  func newIstanbulInstructionSet() JumpTable {
    86  	instructionSet := newConstantinopleInstructionSet()
    87  
    88  	enable1344(&instructionSet) // ChainID opcode - https://eips.ethereum.org/EIPS/eip-1344
    89  	enable1884(&instructionSet) // Reprice reader opcodes - https://eips.ethereum.org/EIPS/eip-1884
    90  	enable2200(&instructionSet) // Net metered SSTORE - https://eips.ethereum.org/EIPS/eip-2200
    91  
    92  	return instructionSet
    93  }
    94  
    95  // newConstantinopleInstructionSet returns the frontier, homestead,
    96  // byzantium and contantinople instructions.
    97  func newConstantinopleInstructionSet() JumpTable {
    98  	instructionSet := newByzantiumInstructionSet()
    99  	instructionSet[SHL] = &operation{
   100  		execute:     opSHL,
   101  		constantGas: GasFastestStep,
   102  		minStack:    minStack(2, 1),
   103  		maxStack:    maxStack(2, 1),
   104  	}
   105  	instructionSet[SHR] = &operation{
   106  		execute:     opSHR,
   107  		constantGas: GasFastestStep,
   108  		minStack:    minStack(2, 1),
   109  		maxStack:    maxStack(2, 1),
   110  	}
   111  	instructionSet[SAR] = &operation{
   112  		execute:     opSAR,
   113  		constantGas: GasFastestStep,
   114  		minStack:    minStack(2, 1),
   115  		maxStack:    maxStack(2, 1),
   116  	}
   117  	instructionSet[EXTCODEHASH] = &operation{
   118  		execute:     opExtCodeHash,
   119  		constantGas: params.ExtcodeHashGasConstantinople,
   120  		minStack:    minStack(1, 1),
   121  		maxStack:    maxStack(1, 1),
   122  	}
   123  	instructionSet[CREATE2] = &operation{
   124  		execute:     opCreate2,
   125  		constantGas: params.Create2Gas,
   126  		dynamicGas:  gasCreate2,
   127  		minStack:    minStack(4, 1),
   128  		maxStack:    maxStack(4, 1),
   129  		memorySize:  memoryCreate2,
   130  		writes:      true,
   131  		returns:     true,
   132  	}
   133  	return instructionSet
   134  }
   135  
   136  // newByzantiumInstructionSet returns the frontier, homestead and
   137  // byzantium instructions.
   138  func newByzantiumInstructionSet() JumpTable {
   139  	instructionSet := newSpuriousDragonInstructionSet()
   140  	instructionSet[STATICCALL] = &operation{
   141  		execute:     opStaticCall,
   142  		constantGas: params.CallGasEIP150,
   143  		dynamicGas:  gasStaticCall,
   144  		minStack:    minStack(6, 1),
   145  		maxStack:    maxStack(6, 1),
   146  		memorySize:  memoryStaticCall,
   147  		returns:     true,
   148  	}
   149  	instructionSet[RETURNDATASIZE] = &operation{
   150  		execute:     opReturnDataSize,
   151  		constantGas: GasQuickStep,
   152  		minStack:    minStack(0, 1),
   153  		maxStack:    maxStack(0, 1),
   154  	}
   155  	instructionSet[RETURNDATACOPY] = &operation{
   156  		execute:     opReturnDataCopy,
   157  		constantGas: GasFastestStep,
   158  		dynamicGas:  gasReturnDataCopy,
   159  		minStack:    minStack(3, 0),
   160  		maxStack:    maxStack(3, 0),
   161  		memorySize:  memoryReturnDataCopy,
   162  	}
   163  	instructionSet[REVERT] = &operation{
   164  		execute:    opRevert,
   165  		dynamicGas: gasRevert,
   166  		minStack:   minStack(2, 0),
   167  		maxStack:   maxStack(2, 0),
   168  		memorySize: memoryRevert,
   169  		reverts:    true,
   170  		returns:    true,
   171  	}
   172  	return instructionSet
   173  }
   174  
   175  // EIP 158 a.k.a Spurious Dragon
   176  func newSpuriousDragonInstructionSet() JumpTable {
   177  	instructionSet := newTangerineWhistleInstructionSet()
   178  	instructionSet[EXP].dynamicGas = gasExpEIP158
   179  	return instructionSet
   180  
   181  }
   182  
   183  // EIP 150 a.k.a Tangerine Whistle
   184  func newTangerineWhistleInstructionSet() JumpTable {
   185  	instructionSet := newHomesteadInstructionSet()
   186  	instructionSet[BALANCE].constantGas = params.BalanceGasEIP150
   187  	instructionSet[EXTCODESIZE].constantGas = params.ExtcodeSizeGasEIP150
   188  	instructionSet[SLOAD].constantGas = params.SloadGasEIP150
   189  	instructionSet[EXTCODECOPY].constantGas = params.ExtcodeCopyBaseEIP150
   190  	instructionSet[CALL].constantGas = params.CallGasEIP150
   191  	instructionSet[CALLCODE].constantGas = params.CallGasEIP150
   192  	instructionSet[DELEGATECALL].constantGas = params.CallGasEIP150
   193  	return instructionSet
   194  }
   195  
   196  // newHomesteadInstructionSet returns the frontier and homestead
   197  // instructions that can be executed during the homestead phase.
   198  func newHomesteadInstructionSet() JumpTable {
   199  	instructionSet := newFrontierInstructionSet()
   200  	instructionSet[DELEGATECALL] = &operation{
   201  		execute:     opDelegateCall,
   202  		dynamicGas:  gasDelegateCall,
   203  		constantGas: params.CallGasFrontier,
   204  		minStack:    minStack(6, 1),
   205  		maxStack:    maxStack(6, 1),
   206  		memorySize:  memoryDelegateCall,
   207  		returns:     true,
   208  	}
   209  	return instructionSet
   210  }
   211  
   212  // newFrontierInstructionSet returns the frontier instructions
   213  // that can be executed during the frontier phase.
   214  func newFrontierInstructionSet() JumpTable {
   215  	return JumpTable{
   216  		STOP: {
   217  			execute:     opStop,
   218  			constantGas: 0,
   219  			minStack:    minStack(0, 0),
   220  			maxStack:    maxStack(0, 0),
   221  			halts:       true,
   222  		},
   223  		ADD: {
   224  			execute:     opAdd,
   225  			constantGas: GasFastestStep,
   226  			minStack:    minStack(2, 1),
   227  			maxStack:    maxStack(2, 1),
   228  		},
   229  		MUL: {
   230  			execute:     opMul,
   231  			constantGas: GasFastStep,
   232  			minStack:    minStack(2, 1),
   233  			maxStack:    maxStack(2, 1),
   234  		},
   235  		SUB: {
   236  			execute:     opSub,
   237  			constantGas: GasFastestStep,
   238  			minStack:    minStack(2, 1),
   239  			maxStack:    maxStack(2, 1),
   240  		},
   241  		DIV: {
   242  			execute:     opDiv,
   243  			constantGas: GasFastStep,
   244  			minStack:    minStack(2, 1),
   245  			maxStack:    maxStack(2, 1),
   246  		},
   247  		SDIV: {
   248  			execute:     opSdiv,
   249  			constantGas: GasFastStep,
   250  			minStack:    minStack(2, 1),
   251  			maxStack:    maxStack(2, 1),
   252  		},
   253  		MOD: {
   254  			execute:     opMod,
   255  			constantGas: GasFastStep,
   256  			minStack:    minStack(2, 1),
   257  			maxStack:    maxStack(2, 1),
   258  		},
   259  		SMOD: {
   260  			execute:     opSmod,
   261  			constantGas: GasFastStep,
   262  			minStack:    minStack(2, 1),
   263  			maxStack:    maxStack(2, 1),
   264  		},
   265  		ADDMOD: {
   266  			execute:     opAddmod,
   267  			constantGas: GasMidStep,
   268  			minStack:    minStack(3, 1),
   269  			maxStack:    maxStack(3, 1),
   270  		},
   271  		MULMOD: {
   272  			execute:     opMulmod,
   273  			constantGas: GasMidStep,
   274  			minStack:    minStack(3, 1),
   275  			maxStack:    maxStack(3, 1),
   276  		},
   277  		EXP: {
   278  			execute:    opExp,
   279  			dynamicGas: gasExpFrontier,
   280  			minStack:   minStack(2, 1),
   281  			maxStack:   maxStack(2, 1),
   282  		},
   283  		SIGNEXTEND: {
   284  			execute:     opSignExtend,
   285  			constantGas: GasFastStep,
   286  			minStack:    minStack(2, 1),
   287  			maxStack:    maxStack(2, 1),
   288  		},
   289  		LT: {
   290  			execute:     opLt,
   291  			constantGas: GasFastestStep,
   292  			minStack:    minStack(2, 1),
   293  			maxStack:    maxStack(2, 1),
   294  		},
   295  		GT: {
   296  			execute:     opGt,
   297  			constantGas: GasFastestStep,
   298  			minStack:    minStack(2, 1),
   299  			maxStack:    maxStack(2, 1),
   300  		},
   301  		SLT: {
   302  			execute:     opSlt,
   303  			constantGas: GasFastestStep,
   304  			minStack:    minStack(2, 1),
   305  			maxStack:    maxStack(2, 1),
   306  		},
   307  		SGT: {
   308  			execute:     opSgt,
   309  			constantGas: GasFastestStep,
   310  			minStack:    minStack(2, 1),
   311  			maxStack:    maxStack(2, 1),
   312  		},
   313  		EQ: {
   314  			execute:     opEq,
   315  			constantGas: GasFastestStep,
   316  			minStack:    minStack(2, 1),
   317  			maxStack:    maxStack(2, 1),
   318  		},
   319  		ISZERO: {
   320  			execute:     opIszero,
   321  			constantGas: GasFastestStep,
   322  			minStack:    minStack(1, 1),
   323  			maxStack:    maxStack(1, 1),
   324  		},
   325  		AND: {
   326  			execute:     opAnd,
   327  			constantGas: GasFastestStep,
   328  			minStack:    minStack(2, 1),
   329  			maxStack:    maxStack(2, 1),
   330  		},
   331  		XOR: {
   332  			execute:     opXor,
   333  			constantGas: GasFastestStep,
   334  			minStack:    minStack(2, 1),
   335  			maxStack:    maxStack(2, 1),
   336  		},
   337  		OR: {
   338  			execute:     opOr,
   339  			constantGas: GasFastestStep,
   340  			minStack:    minStack(2, 1),
   341  			maxStack:    maxStack(2, 1),
   342  		},
   343  		NOT: {
   344  			execute:     opNot,
   345  			constantGas: GasFastestStep,
   346  			minStack:    minStack(1, 1),
   347  			maxStack:    maxStack(1, 1),
   348  		},
   349  		BYTE: {
   350  			execute:     opByte,
   351  			constantGas: GasFastestStep,
   352  			minStack:    minStack(2, 1),
   353  			maxStack:    maxStack(2, 1),
   354  		},
   355  		SHA3: {
   356  			execute:     opSha3,
   357  			constantGas: params.Sha3Gas,
   358  			dynamicGas:  gasSha3,
   359  			minStack:    minStack(2, 1),
   360  			maxStack:    maxStack(2, 1),
   361  			memorySize:  memorySha3,
   362  		},
   363  		ADDRESS: {
   364  			execute:     opAddress,
   365  			constantGas: GasQuickStep,
   366  			minStack:    minStack(0, 1),
   367  			maxStack:    maxStack(0, 1),
   368  		},
   369  		BALANCE: {
   370  			execute:     opBalance,
   371  			constantGas: params.BalanceGasFrontier,
   372  			minStack:    minStack(1, 1),
   373  			maxStack:    maxStack(1, 1),
   374  		},
   375  		ORIGIN: {
   376  			execute:     opOrigin,
   377  			constantGas: GasQuickStep,
   378  			minStack:    minStack(0, 1),
   379  			maxStack:    maxStack(0, 1),
   380  		},
   381  		CALLER: {
   382  			execute:     opCaller,
   383  			constantGas: GasQuickStep,
   384  			minStack:    minStack(0, 1),
   385  			maxStack:    maxStack(0, 1),
   386  		},
   387  		CALLVALUE: {
   388  			execute:     opCallValue,
   389  			constantGas: GasQuickStep,
   390  			minStack:    minStack(0, 1),
   391  			maxStack:    maxStack(0, 1),
   392  		},
   393  		CALLDATALOAD: {
   394  			execute:     opCallDataLoad,
   395  			constantGas: GasFastestStep,
   396  			minStack:    minStack(1, 1),
   397  			maxStack:    maxStack(1, 1),
   398  		},
   399  		CALLDATASIZE: {
   400  			execute:     opCallDataSize,
   401  			constantGas: GasQuickStep,
   402  			minStack:    minStack(0, 1),
   403  			maxStack:    maxStack(0, 1),
   404  		},
   405  		CALLDATACOPY: {
   406  			execute:     opCallDataCopy,
   407  			constantGas: GasFastestStep,
   408  			dynamicGas:  gasCallDataCopy,
   409  			minStack:    minStack(3, 0),
   410  			maxStack:    maxStack(3, 0),
   411  			memorySize:  memoryCallDataCopy,
   412  		},
   413  		CODESIZE: {
   414  			execute:     opCodeSize,
   415  			constantGas: GasQuickStep,
   416  			minStack:    minStack(0, 1),
   417  			maxStack:    maxStack(0, 1),
   418  		},
   419  		CODECOPY: {
   420  			execute:     opCodeCopy,
   421  			constantGas: GasFastestStep,
   422  			dynamicGas:  gasCodeCopy,
   423  			minStack:    minStack(3, 0),
   424  			maxStack:    maxStack(3, 0),
   425  			memorySize:  memoryCodeCopy,
   426  		},
   427  		GASPRICE: {
   428  			execute:     opGasprice,
   429  			constantGas: GasQuickStep,
   430  			minStack:    minStack(0, 1),
   431  			maxStack:    maxStack(0, 1),
   432  		},
   433  		EXTCODESIZE: {
   434  			execute:     opExtCodeSize,
   435  			constantGas: params.ExtcodeSizeGasFrontier,
   436  			minStack:    minStack(1, 1),
   437  			maxStack:    maxStack(1, 1),
   438  		},
   439  		EXTCODECOPY: {
   440  			execute:     opExtCodeCopy,
   441  			constantGas: params.ExtcodeCopyBaseFrontier,
   442  			dynamicGas:  gasExtCodeCopy,
   443  			minStack:    minStack(4, 0),
   444  			maxStack:    maxStack(4, 0),
   445  			memorySize:  memoryExtCodeCopy,
   446  		},
   447  		BLOCKHASH: {
   448  			execute:     opBlockhash,
   449  			constantGas: GasExtStep,
   450  			minStack:    minStack(1, 1),
   451  			maxStack:    maxStack(1, 1),
   452  		},
   453  		COINBASE: {
   454  			execute:     opCoinbase,
   455  			constantGas: GasQuickStep,
   456  			minStack:    minStack(0, 1),
   457  			maxStack:    maxStack(0, 1),
   458  		},
   459  		TIMESTAMP: {
   460  			execute:     opTimestamp,
   461  			constantGas: GasQuickStep,
   462  			minStack:    minStack(0, 1),
   463  			maxStack:    maxStack(0, 1),
   464  		},
   465  		NUMBER: {
   466  			execute:     opNumber,
   467  			constantGas: GasQuickStep,
   468  			minStack:    minStack(0, 1),
   469  			maxStack:    maxStack(0, 1),
   470  		},
   471  		DIFFICULTY: {
   472  			execute:     opDifficulty,
   473  			constantGas: GasQuickStep,
   474  			minStack:    minStack(0, 1),
   475  			maxStack:    maxStack(0, 1),
   476  		},
   477  		GASLIMIT: {
   478  			execute:     opGasLimit,
   479  			constantGas: GasQuickStep,
   480  			minStack:    minStack(0, 1),
   481  			maxStack:    maxStack(0, 1),
   482  		},
   483  		POP: {
   484  			execute:     opPop,
   485  			constantGas: GasQuickStep,
   486  			minStack:    minStack(1, 0),
   487  			maxStack:    maxStack(1, 0),
   488  		},
   489  		MLOAD: {
   490  			execute:     opMload,
   491  			constantGas: GasFastestStep,
   492  			dynamicGas:  gasMLoad,
   493  			minStack:    minStack(1, 1),
   494  			maxStack:    maxStack(1, 1),
   495  			memorySize:  memoryMLoad,
   496  		},
   497  		MSTORE: {
   498  			execute:     opMstore,
   499  			constantGas: GasFastestStep,
   500  			dynamicGas:  gasMStore,
   501  			minStack:    minStack(2, 0),
   502  			maxStack:    maxStack(2, 0),
   503  			memorySize:  memoryMStore,
   504  		},
   505  		MSTORE8: {
   506  			execute:     opMstore8,
   507  			constantGas: GasFastestStep,
   508  			dynamicGas:  gasMStore8,
   509  			memorySize:  memoryMStore8,
   510  			minStack:    minStack(2, 0),
   511  			maxStack:    maxStack(2, 0),
   512  		},
   513  		SLOAD: {
   514  			execute:     opSload,
   515  			constantGas: params.SloadGasFrontier,
   516  			minStack:    minStack(1, 1),
   517  			maxStack:    maxStack(1, 1),
   518  		},
   519  		SSTORE: {
   520  			execute:    opSstore,
   521  			dynamicGas: gasSStore,
   522  			minStack:   minStack(2, 0),
   523  			maxStack:   maxStack(2, 0),
   524  			writes:     true,
   525  		},
   526  		JUMP: {
   527  			execute:     opJump,
   528  			constantGas: GasMidStep,
   529  			minStack:    minStack(1, 0),
   530  			maxStack:    maxStack(1, 0),
   531  			jumps:       true,
   532  		},
   533  		JUMPI: {
   534  			execute:     opJumpi,
   535  			constantGas: GasSlowStep,
   536  			minStack:    minStack(2, 0),
   537  			maxStack:    maxStack(2, 0),
   538  			jumps:       true,
   539  		},
   540  		PC: {
   541  			execute:     opPc,
   542  			constantGas: GasQuickStep,
   543  			minStack:    minStack(0, 1),
   544  			maxStack:    maxStack(0, 1),
   545  		},
   546  		MSIZE: {
   547  			execute:     opMsize,
   548  			constantGas: GasQuickStep,
   549  			minStack:    minStack(0, 1),
   550  			maxStack:    maxStack(0, 1),
   551  		},
   552  		GAS: {
   553  			execute:     opGas,
   554  			constantGas: GasQuickStep,
   555  			minStack:    minStack(0, 1),
   556  			maxStack:    maxStack(0, 1),
   557  		},
   558  		JUMPDEST: {
   559  			execute:     opJumpdest,
   560  			constantGas: params.JumpdestGas,
   561  			minStack:    minStack(0, 0),
   562  			maxStack:    maxStack(0, 0),
   563  		},
   564  		PUSH1: {
   565  			execute:     opPush1,
   566  			constantGas: GasFastestStep,
   567  			minStack:    minStack(0, 1),
   568  			maxStack:    maxStack(0, 1),
   569  		},
   570  		PUSH2: {
   571  			execute:     makePush(2, 2),
   572  			constantGas: GasFastestStep,
   573  			minStack:    minStack(0, 1),
   574  			maxStack:    maxStack(0, 1),
   575  		},
   576  		PUSH3: {
   577  			execute:     makePush(3, 3),
   578  			constantGas: GasFastestStep,
   579  			minStack:    minStack(0, 1),
   580  			maxStack:    maxStack(0, 1),
   581  		},
   582  		PUSH4: {
   583  			execute:     makePush(4, 4),
   584  			constantGas: GasFastestStep,
   585  			minStack:    minStack(0, 1),
   586  			maxStack:    maxStack(0, 1),
   587  		},
   588  		PUSH5: {
   589  			execute:     makePush(5, 5),
   590  			constantGas: GasFastestStep,
   591  			minStack:    minStack(0, 1),
   592  			maxStack:    maxStack(0, 1),
   593  		},
   594  		PUSH6: {
   595  			execute:     makePush(6, 6),
   596  			constantGas: GasFastestStep,
   597  			minStack:    minStack(0, 1),
   598  			maxStack:    maxStack(0, 1),
   599  		},
   600  		PUSH7: {
   601  			execute:     makePush(7, 7),
   602  			constantGas: GasFastestStep,
   603  			minStack:    minStack(0, 1),
   604  			maxStack:    maxStack(0, 1),
   605  		},
   606  		PUSH8: {
   607  			execute:     makePush(8, 8),
   608  			constantGas: GasFastestStep,
   609  			minStack:    minStack(0, 1),
   610  			maxStack:    maxStack(0, 1),
   611  		},
   612  		PUSH9: {
   613  			execute:     makePush(9, 9),
   614  			constantGas: GasFastestStep,
   615  			minStack:    minStack(0, 1),
   616  			maxStack:    maxStack(0, 1),
   617  		},
   618  		PUSH10: {
   619  			execute:     makePush(10, 10),
   620  			constantGas: GasFastestStep,
   621  			minStack:    minStack(0, 1),
   622  			maxStack:    maxStack(0, 1),
   623  		},
   624  		PUSH11: {
   625  			execute:     makePush(11, 11),
   626  			constantGas: GasFastestStep,
   627  			minStack:    minStack(0, 1),
   628  			maxStack:    maxStack(0, 1),
   629  		},
   630  		PUSH12: {
   631  			execute:     makePush(12, 12),
   632  			constantGas: GasFastestStep,
   633  			minStack:    minStack(0, 1),
   634  			maxStack:    maxStack(0, 1),
   635  		},
   636  		PUSH13: {
   637  			execute:     makePush(13, 13),
   638  			constantGas: GasFastestStep,
   639  			minStack:    minStack(0, 1),
   640  			maxStack:    maxStack(0, 1),
   641  		},
   642  		PUSH14: {
   643  			execute:     makePush(14, 14),
   644  			constantGas: GasFastestStep,
   645  			minStack:    minStack(0, 1),
   646  			maxStack:    maxStack(0, 1),
   647  		},
   648  		PUSH15: {
   649  			execute:     makePush(15, 15),
   650  			constantGas: GasFastestStep,
   651  			minStack:    minStack(0, 1),
   652  			maxStack:    maxStack(0, 1),
   653  		},
   654  		PUSH16: {
   655  			execute:     makePush(16, 16),
   656  			constantGas: GasFastestStep,
   657  			minStack:    minStack(0, 1),
   658  			maxStack:    maxStack(0, 1),
   659  		},
   660  		PUSH17: {
   661  			execute:     makePush(17, 17),
   662  			constantGas: GasFastestStep,
   663  			minStack:    minStack(0, 1),
   664  			maxStack:    maxStack(0, 1),
   665  		},
   666  		PUSH18: {
   667  			execute:     makePush(18, 18),
   668  			constantGas: GasFastestStep,
   669  			minStack:    minStack(0, 1),
   670  			maxStack:    maxStack(0, 1),
   671  		},
   672  		PUSH19: {
   673  			execute:     makePush(19, 19),
   674  			constantGas: GasFastestStep,
   675  			minStack:    minStack(0, 1),
   676  			maxStack:    maxStack(0, 1),
   677  		},
   678  		PUSH20: {
   679  			execute:     makePush(20, 20),
   680  			constantGas: GasFastestStep,
   681  			minStack:    minStack(0, 1),
   682  			maxStack:    maxStack(0, 1),
   683  		},
   684  		PUSH21: {
   685  			execute:     makePush(21, 21),
   686  			constantGas: GasFastestStep,
   687  			minStack:    minStack(0, 1),
   688  			maxStack:    maxStack(0, 1),
   689  		},
   690  		PUSH22: {
   691  			execute:     makePush(22, 22),
   692  			constantGas: GasFastestStep,
   693  			minStack:    minStack(0, 1),
   694  			maxStack:    maxStack(0, 1),
   695  		},
   696  		PUSH23: {
   697  			execute:     makePush(23, 23),
   698  			constantGas: GasFastestStep,
   699  			minStack:    minStack(0, 1),
   700  			maxStack:    maxStack(0, 1),
   701  		},
   702  		PUSH24: {
   703  			execute:     makePush(24, 24),
   704  			constantGas: GasFastestStep,
   705  			minStack:    minStack(0, 1),
   706  			maxStack:    maxStack(0, 1),
   707  		},
   708  		PUSH25: {
   709  			execute:     makePush(25, 25),
   710  			constantGas: GasFastestStep,
   711  			minStack:    minStack(0, 1),
   712  			maxStack:    maxStack(0, 1),
   713  		},
   714  		PUSH26: {
   715  			execute:     makePush(26, 26),
   716  			constantGas: GasFastestStep,
   717  			minStack:    minStack(0, 1),
   718  			maxStack:    maxStack(0, 1),
   719  		},
   720  		PUSH27: {
   721  			execute:     makePush(27, 27),
   722  			constantGas: GasFastestStep,
   723  			minStack:    minStack(0, 1),
   724  			maxStack:    maxStack(0, 1),
   725  		},
   726  		PUSH28: {
   727  			execute:     makePush(28, 28),
   728  			constantGas: GasFastestStep,
   729  			minStack:    minStack(0, 1),
   730  			maxStack:    maxStack(0, 1),
   731  		},
   732  		PUSH29: {
   733  			execute:     makePush(29, 29),
   734  			constantGas: GasFastestStep,
   735  			minStack:    minStack(0, 1),
   736  			maxStack:    maxStack(0, 1),
   737  		},
   738  		PUSH30: {
   739  			execute:     makePush(30, 30),
   740  			constantGas: GasFastestStep,
   741  			minStack:    minStack(0, 1),
   742  			maxStack:    maxStack(0, 1),
   743  		},
   744  		PUSH31: {
   745  			execute:     makePush(31, 31),
   746  			constantGas: GasFastestStep,
   747  			minStack:    minStack(0, 1),
   748  			maxStack:    maxStack(0, 1),
   749  		},
   750  		PUSH32: {
   751  			execute:     makePush(32, 32),
   752  			constantGas: GasFastestStep,
   753  			minStack:    minStack(0, 1),
   754  			maxStack:    maxStack(0, 1),
   755  		},
   756  		DUP1: {
   757  			execute:     makeDup(1),
   758  			constantGas: GasFastestStep,
   759  			minStack:    minDupStack(1),
   760  			maxStack:    maxDupStack(1),
   761  		},
   762  		DUP2: {
   763  			execute:     makeDup(2),
   764  			constantGas: GasFastestStep,
   765  			minStack:    minDupStack(2),
   766  			maxStack:    maxDupStack(2),
   767  		},
   768  		DUP3: {
   769  			execute:     makeDup(3),
   770  			constantGas: GasFastestStep,
   771  			minStack:    minDupStack(3),
   772  			maxStack:    maxDupStack(3),
   773  		},
   774  		DUP4: {
   775  			execute:     makeDup(4),
   776  			constantGas: GasFastestStep,
   777  			minStack:    minDupStack(4),
   778  			maxStack:    maxDupStack(4),
   779  		},
   780  		DUP5: {
   781  			execute:     makeDup(5),
   782  			constantGas: GasFastestStep,
   783  			minStack:    minDupStack(5),
   784  			maxStack:    maxDupStack(5),
   785  		},
   786  		DUP6: {
   787  			execute:     makeDup(6),
   788  			constantGas: GasFastestStep,
   789  			minStack:    minDupStack(6),
   790  			maxStack:    maxDupStack(6),
   791  		},
   792  		DUP7: {
   793  			execute:     makeDup(7),
   794  			constantGas: GasFastestStep,
   795  			minStack:    minDupStack(7),
   796  			maxStack:    maxDupStack(7),
   797  		},
   798  		DUP8: {
   799  			execute:     makeDup(8),
   800  			constantGas: GasFastestStep,
   801  			minStack:    minDupStack(8),
   802  			maxStack:    maxDupStack(8),
   803  		},
   804  		DUP9: {
   805  			execute:     makeDup(9),
   806  			constantGas: GasFastestStep,
   807  			minStack:    minDupStack(9),
   808  			maxStack:    maxDupStack(9),
   809  		},
   810  		DUP10: {
   811  			execute:     makeDup(10),
   812  			constantGas: GasFastestStep,
   813  			minStack:    minDupStack(10),
   814  			maxStack:    maxDupStack(10),
   815  		},
   816  		DUP11: {
   817  			execute:     makeDup(11),
   818  			constantGas: GasFastestStep,
   819  			minStack:    minDupStack(11),
   820  			maxStack:    maxDupStack(11),
   821  		},
   822  		DUP12: {
   823  			execute:     makeDup(12),
   824  			constantGas: GasFastestStep,
   825  			minStack:    minDupStack(12),
   826  			maxStack:    maxDupStack(12),
   827  		},
   828  		DUP13: {
   829  			execute:     makeDup(13),
   830  			constantGas: GasFastestStep,
   831  			minStack:    minDupStack(13),
   832  			maxStack:    maxDupStack(13),
   833  		},
   834  		DUP14: {
   835  			execute:     makeDup(14),
   836  			constantGas: GasFastestStep,
   837  			minStack:    minDupStack(14),
   838  			maxStack:    maxDupStack(14),
   839  		},
   840  		DUP15: {
   841  			execute:     makeDup(15),
   842  			constantGas: GasFastestStep,
   843  			minStack:    minDupStack(15),
   844  			maxStack:    maxDupStack(15),
   845  		},
   846  		DUP16: {
   847  			execute:     makeDup(16),
   848  			constantGas: GasFastestStep,
   849  			minStack:    minDupStack(16),
   850  			maxStack:    maxDupStack(16),
   851  		},
   852  		SWAP1: {
   853  			execute:     makeSwap(1),
   854  			constantGas: GasFastestStep,
   855  			minStack:    minSwapStack(2),
   856  			maxStack:    maxSwapStack(2),
   857  		},
   858  		SWAP2: {
   859  			execute:     makeSwap(2),
   860  			constantGas: GasFastestStep,
   861  			minStack:    minSwapStack(3),
   862  			maxStack:    maxSwapStack(3),
   863  		},
   864  		SWAP3: {
   865  			execute:     makeSwap(3),
   866  			constantGas: GasFastestStep,
   867  			minStack:    minSwapStack(4),
   868  			maxStack:    maxSwapStack(4),
   869  		},
   870  		SWAP4: {
   871  			execute:     makeSwap(4),
   872  			constantGas: GasFastestStep,
   873  			minStack:    minSwapStack(5),
   874  			maxStack:    maxSwapStack(5),
   875  		},
   876  		SWAP5: {
   877  			execute:     makeSwap(5),
   878  			constantGas: GasFastestStep,
   879  			minStack:    minSwapStack(6),
   880  			maxStack:    maxSwapStack(6),
   881  		},
   882  		SWAP6: {
   883  			execute:     makeSwap(6),
   884  			constantGas: GasFastestStep,
   885  			minStack:    minSwapStack(7),
   886  			maxStack:    maxSwapStack(7),
   887  		},
   888  		SWAP7: {
   889  			execute:     makeSwap(7),
   890  			constantGas: GasFastestStep,
   891  			minStack:    minSwapStack(8),
   892  			maxStack:    maxSwapStack(8),
   893  		},
   894  		SWAP8: {
   895  			execute:     makeSwap(8),
   896  			constantGas: GasFastestStep,
   897  			minStack:    minSwapStack(9),
   898  			maxStack:    maxSwapStack(9),
   899  		},
   900  		SWAP9: {
   901  			execute:     makeSwap(9),
   902  			constantGas: GasFastestStep,
   903  			minStack:    minSwapStack(10),
   904  			maxStack:    maxSwapStack(10),
   905  		},
   906  		SWAP10: {
   907  			execute:     makeSwap(10),
   908  			constantGas: GasFastestStep,
   909  			minStack:    minSwapStack(11),
   910  			maxStack:    maxSwapStack(11),
   911  		},
   912  		SWAP11: {
   913  			execute:     makeSwap(11),
   914  			constantGas: GasFastestStep,
   915  			minStack:    minSwapStack(12),
   916  			maxStack:    maxSwapStack(12),
   917  		},
   918  		SWAP12: {
   919  			execute:     makeSwap(12),
   920  			constantGas: GasFastestStep,
   921  			minStack:    minSwapStack(13),
   922  			maxStack:    maxSwapStack(13),
   923  		},
   924  		SWAP13: {
   925  			execute:     makeSwap(13),
   926  			constantGas: GasFastestStep,
   927  			minStack:    minSwapStack(14),
   928  			maxStack:    maxSwapStack(14),
   929  		},
   930  		SWAP14: {
   931  			execute:     makeSwap(14),
   932  			constantGas: GasFastestStep,
   933  			minStack:    minSwapStack(15),
   934  			maxStack:    maxSwapStack(15),
   935  		},
   936  		SWAP15: {
   937  			execute:     makeSwap(15),
   938  			constantGas: GasFastestStep,
   939  			minStack:    minSwapStack(16),
   940  			maxStack:    maxSwapStack(16),
   941  		},
   942  		SWAP16: {
   943  			execute:     makeSwap(16),
   944  			constantGas: GasFastestStep,
   945  			minStack:    minSwapStack(17),
   946  			maxStack:    maxSwapStack(17),
   947  		},
   948  		LOG0: {
   949  			execute:    makeLog(0),
   950  			dynamicGas: makeGasLog(0),
   951  			minStack:   minStack(2, 0),
   952  			maxStack:   maxStack(2, 0),
   953  			memorySize: memoryLog,
   954  			writes:     true,
   955  		},
   956  		LOG1: {
   957  			execute:    makeLog(1),
   958  			dynamicGas: makeGasLog(1),
   959  			minStack:   minStack(3, 0),
   960  			maxStack:   maxStack(3, 0),
   961  			memorySize: memoryLog,
   962  			writes:     true,
   963  		},
   964  		LOG2: {
   965  			execute:    makeLog(2),
   966  			dynamicGas: makeGasLog(2),
   967  			minStack:   minStack(4, 0),
   968  			maxStack:   maxStack(4, 0),
   969  			memorySize: memoryLog,
   970  			writes:     true,
   971  		},
   972  		LOG3: {
   973  			execute:    makeLog(3),
   974  			dynamicGas: makeGasLog(3),
   975  			minStack:   minStack(5, 0),
   976  			maxStack:   maxStack(5, 0),
   977  			memorySize: memoryLog,
   978  			writes:     true,
   979  		},
   980  		LOG4: {
   981  			execute:    makeLog(4),
   982  			dynamicGas: makeGasLog(4),
   983  			minStack:   minStack(6, 0),
   984  			maxStack:   maxStack(6, 0),
   985  			memorySize: memoryLog,
   986  			writes:     true,
   987  		},
   988  		CREATE: {
   989  			execute:     opCreate,
   990  			constantGas: params.CreateGas,
   991  			dynamicGas:  gasCreate,
   992  			minStack:    minStack(3, 1),
   993  			maxStack:    maxStack(3, 1),
   994  			memorySize:  memoryCreate,
   995  			writes:      true,
   996  			returns:     true,
   997  		},
   998  		CALL: {
   999  			execute:     opCall,
  1000  			constantGas: params.CallGasFrontier,
  1001  			dynamicGas:  gasCall,
  1002  			minStack:    minStack(7, 1),
  1003  			maxStack:    maxStack(7, 1),
  1004  			memorySize:  memoryCall,
  1005  			returns:     true,
  1006  		},
  1007  		CALLCODE: {
  1008  			execute:     opCallCode,
  1009  			constantGas: params.CallGasFrontier,
  1010  			dynamicGas:  gasCallCode,
  1011  			minStack:    minStack(7, 1),
  1012  			maxStack:    maxStack(7, 1),
  1013  			memorySize:  memoryCall,
  1014  			returns:     true,
  1015  		},
  1016  		RETURN: {
  1017  			execute:    opReturn,
  1018  			dynamicGas: gasReturn,
  1019  			minStack:   minStack(2, 0),
  1020  			maxStack:   maxStack(2, 0),
  1021  			memorySize: memoryReturn,
  1022  			halts:      true,
  1023  		},
  1024  		SELFDESTRUCT: {
  1025  			execute:    opSuicide,
  1026  			dynamicGas: gasSelfdestruct,
  1027  			minStack:   minStack(1, 0),
  1028  			maxStack:   maxStack(1, 0),
  1029  			halts:      true,
  1030  			writes:     true,
  1031  		},
  1032  	}
  1033  }