Add evmmax opcode test

Author: am1r021

packages/evm/test/evmmax/opcodes.spec.ts

@@ -0,0 +1,82 @@
+import { Common, Hardfork, Mainnet } from '@ethereumjs/common'
+import { assert, describe, it } from 'vitest'
+
+import { type PrefixedHexString, hexToBytes } from '@ethereumjs/util'
+import { createEVM } from '../../src/index.ts'
+
+const MSTORE8 = '53'
+const RETURN = 'f3'
+
+const SETMODX = 'c0'
+const LOADX = 'c1'
+const STOREX = 'c2'
+
+const ADDMODX = 'c3'
+const SUBMODX = 'c4'
+const MULMODX = 'c5'
+
+function numToOpcode(num: number) {
+  return num.toString(16).padStart(2, '0')
+}
+
+function mstore8(index: number, value: number) {
+  return numToOpcode(value) + numToOpcode(index) + MSTORE8
+}
+
+function ret(index: number, size: number) {
+  return size + index + RETURN
+}
+
+function setupx(num_val_slots: number, mod_size: number, mod_offset: number) {
+  return numToOpcode(num_val_slots) + numToOpcode(mod_size) + numToOpcode(mod_offset) + SETMODX
+}
+
+function storex(num_vals: number, val_offset: number, val_slot: number) {
+  return numToOpcode(num_vals) + numToOpcode(val_offset) + numToOpcode(val_slot) + STOREX
+}
+
+function loadx(num_vals: number, val_idx: number, mem_offset: number) {
+  return numToOpcode(num_vals) + numToOpcode(val_idx) + numToOpcode(mem_offset) + LOADX
+}
+
+function addmodx(result_slot_idx: number, x_slot_idx: number, y_slot_idx: number) {
+  return ADDMODX + numToOpcode(result_slot_idx) + numToOpcode(x_slot_idx) + numToOpcode(y_slot_idx)
+}
+
+function submodx(result_slot_idx: number, x_slot_idx: number, y_slot_idx: number) {
+  return SUBMODX + numToOpcode(result_slot_idx) + numToOpcode(x_slot_idx) + numToOpcode(y_slot_idx)
+}
+
+function mulmodx(result_slot_idx: number, x_slot_idx: number, y_slot_idx: number) {
+  return MULMODX + numToOpcode(result_slot_idx) + numToOpcode(x_slot_idx) + numToOpcode(y_slot_idx)
+}
+
+describe('EVM -> getActiveOpcodes()', () => {
+  it('should not expose opcodes from a follow-up HF (istanbul -> petersburg)', async () => {
+    const common = new Common({ chain: Mainnet, eips: [6990] })
+    const evm = await createEVM({ common })
+
+    // create bytecode
+    const bytecode =
+      '0x' +
+      mstore8(0, 7) + // store value 0x07 at index 0 in memory
+      setupx(3, 32, 0) +
+      mstore8(32, 3) +
+      mstore8(64, 6) +
+      storex(2, 32, 0) +
+      addmodx(2, 1, 0) +
+      mulmodx(2, 2, 1) +
+      submodx(2, 2, 1) +
+      loadx(1, 2, 96) +
+      ret(96, 32)
+
+    console.log(bytecode)
+
+    const result = await evm.runCall({
+      data: hexToBytes(bytecode as PrefixedHexString),
+      gasLimit: BigInt(0xffffff),
+    })
+
+    console.log(result)
+  })
+})