EIP150 - Part II

.gitignore

@@ -62,4 +62,6 @@ build/Release
 # Dependency directory
 # https://docs.npmjs.com/misc/faq#should-i-check-my-node-modules-folder-into-git
 node_modules
+package-lock.json
+
 

lib/index.js

@@ -25,6 +25,7 @@ VM.deps = {
  * @param {Blockchain} [opts.blockchain] A blockchain object for storing/retrieving blocks
  * @param {Boolean} [opts.activatePrecompiles] Create entries in the state tree for the precompiled contracts
  * @param {Boolean} [opts.enableHomestead] Force enable Homestead irrelevant to block number
+ * @param {Boolean} [opts.enableHomesteadReprice] Force enable Homestead Reprice (EIP150) irrevelant to block number
  */
 function VM (opts = {}) {
   this.stateManager = new StateManager({

lib/opFns.js

@@ -514,6 +514,7 @@ module.exports = {
     }
 
     checkCallMemCost(runState, options, localOpts)
+    checkOutOfGas(runState, options)
     makeCall(runState, options, localOpts, done)
   },
   CALL: function (gasLimit, toAddress, value, inOffset, inLength, outOffset, outLength, runState, done) {
@@ -539,11 +540,8 @@ module.exports = {
       outLength: outLength
     }
 
-    // add stipend
     if (!value.isZero()) {
-      runState.gasLeft.iadd(new BN(fees.callStipend.v))
       subGas(runState, new BN(fees.callValueTransferGas.v))
-      options.gasLimit.iadd(new BN(fees.callStipend.v))
     }
 
     stateManager.exists(toAddress, function (err, exists) {
@@ -563,11 +561,17 @@ module.exports = {
 
       try {
         checkCallMemCost(runState, options, localOpts)
+        checkOutOfGas(runState, options)
       } catch (e) {
         done(e.error)
         return
       }
 
+      if (!value.isZero()) {
+        runState.gasLeft.iadd(new BN(fees.callStipend.v))
+        options.gasLimit.iadd(new BN(fees.callStipend.v))
+      }
+
       makeCall(runState, options, localOpts, done)
     })
   },
@@ -594,30 +598,30 @@ module.exports = {
       outLength: outLength
     }
 
-    // add stipend
     if (!value.isZero()) {
-      runState.gasLeft.isub(new BN(fees.callValueTransferGas.v)).iadd(new BN(fees.callStipend.v))
-      options.gasLimit.iadd(new BN(fees.callStipend.v))
+      subGas(runState, new BN(fees.callValueTransferGas.v))
     }
 
     checkCallMemCost(runState, options, localOpts)
+    checkOutOfGas(runState, options)
 
-    // load the code
-    stateManager.getAccount(toAddress, function (err, account) {
-      if (err) return done(err)
-      if (utils.isPrecompiled(toAddress)) {
-        options.compiled = true
-        options.code = runState._precompiled[toAddress.toString('hex')]
+    if (!value.isZero()) {
+      runState.gasLeft.iadd(new BN(fees.callStipend.v))
+      options.gasLimit.iadd(new BN(fees.callStipend.v))
+    }
+
+    if (utils.isPrecompiled(toAddress)) {
+      options.compiled = true
+      options.code = runState._precompiled[toAddress.toString('hex')]
+      makeCall(runState, options, localOpts, done)
+    } else {
+      stateManager.getContractCode(toAddress, function (err, code, compiled) {
+        if (err) return done(err)
+        options.code = code
+        options.compiled = compiled
         makeCall(runState, options, localOpts, done)
-      } else {
-        stateManager.getContractCode(toAddress, function (err, code, compiled) {
-          if (err) return done(err)
-          options.code = code
-          options.compiled = compiled
-          makeCall(runState, options, localOpts, done)
-        })
-      }
-    })
+      })
+    }
   },
   DELEGATECALL: function (gas, toAddress, inOffset, inLength, outOffset, outLength, runState, done) {
     var stateManager = runState.stateManager
@@ -645,6 +649,7 @@ module.exports = {
     }
 
     checkCallMemCost(runState, options, localOpts)
+    checkOutOfGas(runState, options)
 
     // load the code
     stateManager.getAccount(toAddress, function (err, account) {
@@ -675,20 +680,29 @@ module.exports = {
     var contractAddress = runState.address
     suicideToAddress = utils.setLengthLeft(suicideToAddress, 20)
 
-    // only add to refund if this is the first suicide for the address
-    if (!runState.suicides[contractAddress.toString('hex')]) {
-      runState.gasRefund = runState.gasRefund.add(new BN(fees.suicideRefundGas.v))
-    }
-
-    runState.suicides[contractAddress.toString('hex')] = suicideToAddress
-    runState.stopped = true
-
     stateManager.getAccount(suicideToAddress, function (err, toAccount) {
       // update balances
       if (err) {
         cb(err)
         return
       }
+
+      if (!toAccount.exists) {
+        try {
+          subGas(runState, new BN(fees.callNewAccountGas.v))
+        } catch (e) {
+          cb(e.error)
+          return
+        }
+      }
+
+      // only add to refund if this is the first suicide for the address
+      if (!runState.suicides[contractAddress.toString('hex')]) {
+        runState.gasRefund = runState.gasRefund.add(new BN(fees.suicideRefundGas.v))
+      }
+      runState.suicides[contractAddress.toString('hex')] = suicideToAddress
+      runState.stopped = true
+
       var newBalance = new Buffer(new BN(contract.balance).add(new BN(toAccount.balance)).toArray())
       async.series([
         stateManager.putAccountBalance.bind(stateManager, suicideToAddress, newBalance),
@@ -813,9 +827,12 @@ function checkCallMemCost (runState, callOptions, localOpts) {
   if (!callOptions.gasLimit) {
     callOptions.gasLimit = runState.gasLeft
   }
+}
 
-  if (runState.gasLeft.cmp(callOptions.gasLimit) === -1) {
-    trap(ERROR.OUT_OF_GAS)
+function checkOutOfGas (runState, callOptions) {
+  const gasAllowed = runState.gasLeft.sub(runState.gasLeft.div(new BN(64)))
+  if (callOptions.gasLimit.gt(gasAllowed)) {
+    callOptions.gasLimit = gasAllowed
   }
 }
 

lib/opcodes.js

@@ -32,7 +32,7 @@ const codes = {
 
   // 0x30 range - closure state
   0x30: ['ADDRESS', 2, 0, 1, true],
-  0x31: ['BALANCE', 20, 1, 1, true],
+  0x31: ['BALANCE', 400, 1, 1, true],
   0x32: ['ORIGIN', 2, 0, 1, true],
   0x33: ['CALLER', 2, 0, 1, true],
   0x34: ['CALLVALUE', 2, 0, 1, true],
@@ -42,8 +42,8 @@ const codes = {
   0x38: ['CODESIZE', 2, 0, 1, false],
   0x39: ['CODECOPY', 3, 3, 0, false],
   0x3a: ['GASPRICE', 2, 0, 1, false],
-  0x3b: ['EXTCODESIZE', 20, 1, 1, true],
-  0x3c: ['EXTCODECOPY', 20, 4, 0, true],
+  0x3b: ['EXTCODESIZE', 700, 1, 1, true],
+  0x3c: ['EXTCODECOPY', 700, 4, 0, true],
 
   // '0x40' range - block operations
   0x40: ['BLOCKHASH', 20, 1, 1, true],
@@ -58,7 +58,7 @@ const codes = {
   0x51: ['MLOAD', 3, 1, 1, false],
   0x52: ['MSTORE', 3, 2, 0, false],
   0x53: ['MSTORE8', 3, 2, 0, false],
-  0x54: ['SLOAD', 50, 1, 1, true],
+  0x54: ['SLOAD', 200, 1, 1, true],
   0x55: ['SSTORE', 0, 2, 0, true],
   0x56: ['JUMP', 8, 1, 0, false],
   0x57: ['JUMPI', 10, 2, 0, false],
@@ -143,13 +143,13 @@ const codes = {
 
   // '0xf0' range - closures
   0xf0: ['CREATE', 32000, 3, 1, true],
-  0xf1: ['CALL', 40, 7, 1, true],
-  0xf2: ['CALLCODE', 40, 7, 1, true],
+  0xf1: ['CALL', 700, 7, 1, true],
+  0xf2: ['CALLCODE', 700, 7, 1, true],
   0xf3: ['RETURN', 0, 2, 0, false],
-  0xf4: ['DELEGATECALL', 40, 6, 1, true],
+  0xf4: ['DELEGATECALL', 700, 6, 1, true],
 
   // '0x70', range - other
-  0xff: ['SUICIDE', 0, 1, 0, false]
+  0xff: ['SUICIDE', 5000, 1, 0, false]
 }
 
 module.exports = function (op, full) {

lib/runCall.js

@@ -154,7 +154,7 @@ module.exports = function (opts, cb) {
         var returnFee = results.return.length * fees.createDataGas.v
         var totalGas = results.gasUsed.addn(returnFee)
         // if not enough gas
-        if (totalGas.cmp(gasLimit) <= 0) {
+        if (totalGas.cmp(gasLimit) <= 0 && results.return.length <= 24576) {
           results.gasUsed = totalGas
         } else {
           results.return = new Buffer([])

lib/runCode.js

@@ -71,7 +71,7 @@ module.exports = function (opts, cb) {
     callData: opts.data || new Buffer([0]),
     code: opts.code,
     populateCache: opts.populateCache === undefined ? true : opts.populateCache,
-    enableHomestead: this.opts.enableHomestead === undefined ? block.isHomestead() : this.opts.enableHomestead // this == vm
+    enableHomestead: this.opts.enableHomestead === undefined ? block.isHomestead() : this.opts.enableHomestead
   }
 
   // temporary - to be factored out
@@ -105,6 +105,7 @@ module.exports = function (opts, cb) {
 
   function vmIsActive () {
     var notAtEnd = runState.programCounter < runState.code.length
+
     return !runState.stopped && notAtEnd && !runState.vmError && !runState.returnValue
   }
 

lib/runTx.js

@@ -5,7 +5,7 @@ const Bloom = require('./bloom.js')
 const Block = require('ethereumjs-block')
 
 /**
- * Process a transaction. Run the vm. Transfers eth. checks balaces
+ * Process a transaction. Run the vm. Transfers eth. Checks balances.
  * @method processTx
  * @param opts
  * @param opts.tx {Transaction} - a transaction
@@ -27,10 +27,6 @@ module.exports = function (opts, cb) {
     block = new Block()
   }
 
-  if (this.opts.enableHomestead) {
-    tx._homestead = true
-  }
-
   if (new BN(block.header.gasLimit).cmp(new BN(tx.gasLimit)) === -1) {
     cb(new Error('tx has a higher gas limit than the block'))
     return
@@ -70,7 +66,7 @@ module.exports = function (opts, cb) {
   }
 
   /**
-   * populates the cache with the two and from of the tx
+   * populates the cache with the 'to' and 'from' of the tx
    */
   function populateCache (cb) {
     var accounts = new Set()
@@ -85,10 +81,9 @@ module.exports = function (opts, cb) {
     self.stateManager.warmCache(accounts, cb)
   }
 
-  // sets up the envorment and runs a `call`
+  // sets up the environment and runs a `call`
   function runCall (cb) {
-    // check to the sender's account to make sure it has enought wei and the
-    // correct nonce
+    // check to the sender's account to make sure it has enough wei and the correct nonce
     var fromAccount = self.stateManager.cache.get(tx.from)
     var message
 
@@ -141,10 +136,10 @@ module.exports = function (opts, cb) {
       results.bloom = txLogsBloom(results.vm.logs)
       fromAccount = self.stateManager.cache.get(tx.from)
 
-      // caculate the totall gas used
+      // caculate the total gas used
       results.gasUsed = results.gasUsed.add(basefee)
 
-      // refund the accoun.stateManagert
+      // process any gas refund
       var gasRefund = results.vm.gasRefund
       if (gasRefund) {
         if (gasRefund.cmp(results.gasUsed.divn(2)) === -1) {
@@ -155,7 +150,7 @@ module.exports = function (opts, cb) {
       }
 
       results.amountSpent = results.gasUsed.mul(new BN(tx.gasPrice))
-      // refund the left over gas amount
+      // refund the leftover gas amount
       fromAccount.balance = new BN(tx.gasLimit).sub(results.gasUsed)
         .mul(new BN(tx.gasPrice))
         .add(new BN(fromAccount.balance))

tests/GeneralStateTestsRunner.js

@@ -36,12 +36,10 @@ function runTestCase (testData, t, cb) {
     function (done) {
       var tx = testUtil.makeTx(testData.transaction)
       block = testUtil.makeBlockFromEnv(testData.env)
-      if (!block.isHomestead() && !testData.homestead) {
-        tx._homestead = false
-      } else {
-        block.isHomestead = function () {
-          return true
-        }
+      tx._homestead = true
+      tx.enableHomestead = true
+      block.isHomestead = function () {
+        return true
       }
 
       if (tx.validate()) {

tests/hooked.js

@@ -32,7 +32,8 @@ tape('hooked-vm', function (test) {
   }
 
   var vm = createHookedVm({
-    enableHomestead: true
+    enableHomestead: true,
+    enableHomsteadReprice: true
   }, hooksForBlockchainState(blockchainState))
 
   // vm.on('step', function(stepData){

tests/tester.js

@@ -2,7 +2,7 @@ const argv = require('minimist')(process.argv.slice(2))
 const async = require('async')
 const tape = require('tape')
 const testing = require('ethereumjs-testing')
-const FORK_CONFIG = 'Homestead'
+const FORK_CONFIG = 'EIP150'
 const skip = [
   'CreateHashCollision', // impossible hash collision on generating address
   'SuicidesMixingCoinbase', // sucides to the coinbase, since we run a blockLevel we create coinbase account.