Add boolean opcodes & other

- Add boolean opcodes
- Add jump_dest validity check
- Add tests for opcode exceptions
- Update calldataload opcode logic
- Add stack.peek()

tests/execute.rs

@@ -215,9 +215,29 @@ fn execute_opcodes_9() {
     let mut s = Stack::new();
     s.execute(&code, &calldata, false).unwrap();
 
-    assert_eq!(s.gas, 9999974988);
     // assert_eq!(s.gas, 9999977788); // TODO WIP geth reported gas
+    assert_eq!(s.gas, 9999974988);
     assert_eq!(s.pc, 10);
     assert_eq!(s.stack.len(), 0);
     assert_eq!(s.storage.len(), 1);
 }
+
+#[test]
+fn execute_opcodes_10() {
+    let code = hex::decode(
+        "606060405260e060020a6000350463a5f3c23b8114601a575b005b60243560043501600055601856",
+    )
+    .unwrap();
+    let calldata = hex::decode("a5f3c23b00000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000004").unwrap();
+
+    println!("LEN {:?}", calldata.len());
+
+    let mut s = Stack::new();
+    s.execute(&code, &calldata, true).unwrap();
+
+    // assert_eq!(s.gas, 9999977752); // WIP correct sstore gas computation
+    assert_eq!(s.gas, 9999979852);
+    assert_eq!(s.pc, 25);
+    assert_eq!(s.stack.len(), 1);
+    assert_eq!(s.storage.len(), 1);
+}