lab17: part 4

2026-04-23 00:31:22 -07:00
parent b7285c39d6
commit c11daa808f
2 changed files with 20 additions and 6 deletions
--- a/lab17/op-codes.js
+++ b/lab17/op-codes.js
@@ -18,6 +18,15 @@ let opcodes = {
    let v2 = vm.stack.pop();
    vm.stack.push(v1-v2);
  }},
+  0x52: { mnemonic: 'MLOAD', evaluate: (vm) => {
+    let offset = vm.stack.pop();
+    vm.stack.push(vm.memory[offset]);
+  }},
+  0x53: { mnemonic: 'MSTORE', evaluate: (vm) => {
+    let offset = vm.stack.pop();
+    let value = vm.stack.pop();
+    vm.memory[offset] = value;
+  }},
  0x5B: { mnemonic: 'JUMPDEST', evaluate: (vm) => {
    // Does nothing.  We could check to make sure that jumps
    // always land at JUMPDEST opcodes, but it is not totally