Merge pull request #1101 from ethereumjs/fix-vm-client-hf-switching

VM/Client: fix HF switching. Fix TangerineWhistle update bug.

Author: holgerd77

packages/client/lib/sync/execution/vmexecution.ts

@@ -49,6 +49,7 @@ export class VMExecution extends Execution {
     const blockNumber = headBlock.header.number.toNumber()
     this.config.execCommon.setHardforkByBlockNumber(blockNumber)
     this.hardfork = this.config.execCommon.hardfork()
+    this.vm._updateOpcodes()
     this.config.logger.info(`Initializing VM execution hardfork=${this.hardfork}`)
   }
 
@@ -112,6 +113,7 @@ export class VMExecution extends Execution {
                 `Execution hardfork switch on block number=${blockNumber} hash=${hash} old=${this.hardfork} new=${hardfork}`
               )
               this.hardfork = this.config.execCommon.setHardforkByBlockNumber(blockNumber)
+              this.vm._updateOpcodes()
             }
             await this.vm.runBlock({ block, root: parentState })
             txCounter += block.transactions.length

packages/vm/lib/evm/opcodes/codes.ts

@@ -191,13 +191,29 @@ const opcodes = {
 
 // Array of hard forks in order. These changes are repeatedly applied to `opcodes` until the hard fork is in the future based upon the common
 // TODO: All gas price changes should be moved to common
+// If the base gas cost of any of the operations change, then these should also be added to this list.
+// If there are context variables changed (such as "warm slot reads") which are not the base gas fees,
+// Then this does not have to be added.
 const hardforkOpcodes = [
   {
     hardforkName: 'homestead',
     opcodes: {
       0xf4: { name: 'DELEGATECALL', isAsync: true }, // EIP 7
     },
   },
+  {
+    hardforkName: 'tangerineWhistle',
+    opcodes: {
+      0x54: { name: 'SLOAD', isAsync: true },
+      0xf1: { name: 'CALL', isAsync: true },
+      0xf2: { name: 'CALLCODE', isAsync: true },
+      0x3b: { name: 'EXTCODESIZE', isAsync: true },
+      0x3c: { name: 'EXTCODECOPY', isAsync: true },
+      0xf4: { name: 'DELEGATECALL', isAsync: true }, // EIP 7
+      0xff: { name: 'SELFDESTRUCT', isAsync: true },
+      0x31: { name: 'BALANCE', isAsync: true },
+    },
+  },
   {
     hardforkName: 'byzantium',
     opcodes: {