Istanbul Draft EIP-1108 Support

README.md

@@ -16,9 +16,31 @@ The VM currently supports the following hardfork rules:
 - `Byzantium`
 - `Constantinople`
 - `Petersburg` (default)
+- `Istanbul` (`DRAFT`)
 
 If you are still looking for a [Spurious Dragon](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-607.md) compatible version of this library install the latest of the `2.2.x` series (see [Changelog](./CHANGELOG.md)).
 
+##### Istanbul Harfork Support
+
+With the `v4.0.0` release we are starting to add implementations of EIPs being
+candidates or accepted for inclusion within the `Istanbul` hardfork. You can
+activate a preliminary `Istanbul` VM by using the `istanbul` `hardfork` option
+flag.
+
+Currently supported `Istanbul` EIPs:
+
+- [EIP-1108](https://eips.ethereum.org/EIPS/eip-1803) (Candidate): `alt_bn128` Gas Cost Reductions, see PR [#540](https://github.com/ethereumjs/ethereumjs-vm/pull/540)
+
+Note that this is highly experimental and solely meant for experimental purposes,
+since `Istanbul` scope is not yet finalized and most EIPs are still in a `DRAFT`
+state and likely subject to updates and changes.
+
+A final `Istanbul` VM will be released along a major version bump to likely
+`v5.0.0` or `v6.0.0`.
+
+Have a look at the corresponding issue to follow the discussion and current state on
+[Istanbul planning](https://github.com/ethereumjs/ethereumjs-vm/issues/501).
+
 # INSTALL
 
 `npm install ethereumjs-vm`

lib/index.ts

@@ -63,7 +63,7 @@ export default class VM extends AsyncEventEmitter {
    * Instantiates a new [[VM]] Object.
    * @param opts - Default values for the options are:
    *  - `chain`: 'mainnet'
-   *  - `hardfork`: 'petersburg' [supported: 'byzantium', 'constantinople', 'petersburg' (will throw on unsupported)]
+   *  - `hardfork`: 'petersburg' [supported: 'byzantium', 'constantinople', 'petersburg', 'istanbul' (DRAFT) (will throw on unsupported)]
    *  - `activatePrecompiles`: false
    *  - `allowUnlimitedContractSize`: false [ONLY set to `true` during debugging]
    */
@@ -83,7 +83,7 @@ export default class VM extends AsyncEventEmitter {
     } else {
       const chain = opts.chain ? opts.chain : 'mainnet'
       const hardfork = opts.hardfork ? opts.hardfork : 'petersburg'
-      const supportedHardforks = ['byzantium', 'constantinople', 'petersburg']
+      const supportedHardforks = ['byzantium', 'constantinople', 'petersburg', 'istanbul']
 
       this._common = new Common(chain, hardfork, supportedHardforks)
     }

package.json

@@ -53,7 +53,7 @@
     "ethereumjs-account": "^3.0.0",
     "ethereumjs-block": "~2.2.0",
     "ethereumjs-blockchain": "^3.4.0",
-    "ethereumjs-common": "^1.1.0",
+    "ethereumjs-common": "1.2.1",
     "ethereumjs-util": "^6.1.0",
     "fake-merkle-patricia-tree": "^1.0.1",
     "functional-red-black-tree": "^1.0.1",

tests/api/evm/precompiles/06-ecadd.js

@@ -0,0 +1,22 @@
+const BN = require('bn.js')
+const tape = require('tape')
+const Common = require('ethereumjs-common').default
+const util = require('ethereumjs-util')
+const VM = require('../../../../dist/index').default
+const { getPrecompile } = require('../../../../dist/evm/precompiles')
+
+tape('Precompiles: ECADD', (t) => {
+  t.test('ECADD', (st) => {
+    const common = new Common('mainnet', 'petersburg')
+    let vm = new VM({ common: common })
+    let ECADD = getPrecompile('0000000000000000000000000000000000000006')
+
+    let result = ECADD({
+      data: Buffer.alloc(0),
+      gasLimit: new BN(0xffff),
+      _common: common
+    })
+    st.deepEqual(result.gasUsed.toNumber(), 500, 'should use petersburg gas costs')
+    st.end()
+  })
+})

tests/api/evm/precompiles/07-ecmul.js

@@ -0,0 +1,22 @@
+const BN = require('bn.js')
+const tape = require('tape')
+const Common = require('ethereumjs-common').default
+const util = require('ethereumjs-util')
+const VM = require('../../../../dist/index').default
+const { getPrecompile } = require('../../../../dist/evm/precompiles')
+
+tape('Precompiles: ECMUL', (t) => {
+  t.test('ECMUL', (st) => {
+    const common = new Common('mainnet', 'petersburg')
+    let vm = new VM({ common: common })
+    let ECMUL = getPrecompile('0000000000000000000000000000000000000007')
+
+    let result = ECMUL({
+      data: Buffer.alloc(0),
+      gasLimit: new BN(0xffff),
+      _common: common
+    })
+    st.deepEqual(result.gasUsed.toNumber(), 40000, 'should use petersburg gas costs')
+    st.end()
+  })
+})

tests/api/evm/precompiles/08-ecpairing.js

@@ -0,0 +1,22 @@
+const BN = require('bn.js')
+const tape = require('tape')
+const Common = require('ethereumjs-common').default
+const util = require('ethereumjs-util')
+const VM = require('../../../../dist/index').default
+const { getPrecompile } = require('../../../../dist/evm/precompiles')
+
+tape('Precompiles: ECPAIRING', (t) => {
+  t.test('ECPAIRING', (st) => {
+    const common = new Common('mainnet', 'petersburg')
+    let vm = new VM({ common: common })
+    let ECPAIRING = getPrecompile('0000000000000000000000000000000000000008')
+
+    let result = ECPAIRING({
+      data: Buffer.from('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', 'hex'),
+      gasLimit: new BN(0xffffff),
+      _common: common
+    })
+    st.deepEqual(result.gasUsed.toNumber(), 260000, 'should use petersburg gas costs (k ^= 2 pairings)')
+    st.end()
+  })
+})

tests/api/istanbul/eip-1108.js

@@ -0,0 +1,50 @@
+const BN = require('bn.js')
+const tape = require('tape')
+const Common = require('ethereumjs-common').default
+const util = require('ethereumjs-util')
+const VM = require('../../../dist/index').default
+const { getPrecompile } = require('../../../dist/evm/precompiles')
+
+tape('Istanbul: EIP-1108 tests', (t) => {
+  t.test('ECADD', (st) => {
+    const common = new Common('mainnet', 'istanbul')
+    let vm = new VM({ common: common })
+    let ECADD = getPrecompile('0000000000000000000000000000000000000006')
+
+    let result = ECADD({
+      data: Buffer.alloc(0),
+      gasLimit: new BN(0xffff),
+      _common: common
+    })
+    st.deepEqual(result.gasUsed.toNumber(), 150, 'should use istanbul gas costs')
+    st.end()
+  })
+
+  t.test('ECMUL', (st) => {
+    const common = new Common('mainnet', 'istanbul')
+    let vm = new VM({ common: common })
+    let ECMUL = getPrecompile('0000000000000000000000000000000000000007')
+
+    let result = ECMUL({
+      data: Buffer.alloc(0),
+      gasLimit: new BN(0xffff),
+      _common: common
+    })
+    st.deepEqual(result.gasUsed.toNumber(), 6000, 'should use istanbul gas costs')
+    st.end()
+  })
+
+  t.test('ECPAIRING', (st) => {
+    const common = new Common('mainnet', 'istanbul')
+    let vm = new VM({ common: common })
+    let ECPAIRING = getPrecompile('0000000000000000000000000000000000000008')
+
+    let result = ECPAIRING({
+      data: Buffer.from('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', 'hex'),
+      gasLimit: new BN(0xffffff),
+      _common: common
+    })
+    st.deepEqual(result.gasUsed.toNumber(), 113000, 'should use petersburg gas costs (k ^= 2 pairings)')
+    st.end()
+  })
+})

tests/api/istanbul/index.js

@@ -0,0 +1,12 @@
+const tape = require('tape')
+const util = require('ethereumjs-util')
+const VM = require('../../../dist/index').default
+
+tape('General Istanbul VM tests', (t) => {
+  t.test('should accept istanbul harfork option', (st) => {
+    const vm = new VM({ hardfork: 'istanbul' })
+    st.ok(vm.stateManager)
+    st.deepEqual(vm.stateManager._trie.root, util.KECCAK256_RLP, 'it has default trie')
+    st.end()
+  })
+})