output rom size in hex longlong format

src/app/core/labeling.cc

@@ -34,6 +34,10 @@ std::string UppercaseHexLong(uint32_t dword) {
   std::string result = absl::StrFormat("0x%06X", dword);
   return result;
 }
+std::string UppercaseHexLongLong(uint64_t qword) {
+  std::string result = absl::StrFormat("0x%08X", qword);
+  return result;
+}
 
 bool StringReplace(std::string& str, const std::string& from,
                    const std::string& to) {

src/app/core/labeling.h

@@ -20,6 +20,7 @@ namespace core {
 std::string UppercaseHexByte(uint8_t byte, bool leading = false);
 std::string UppercaseHexWord(uint16_t word);
 std::string UppercaseHexLong(uint32_t dword);
+std::string UppercaseHexLongLong(uint64_t qword);
 
 bool StringReplace(std::string& str, const std::string& from,
                    const std::string& to);

src/app/editor/editor_manager.cc

@@ -376,7 +376,7 @@ void EditorManager::DrawInfoPopup() {
   if (BeginPopupModal("ROM Information", nullptr,
                       ImGuiWindowFlags_AlwaysAutoResize)) {
     Text("Title: %s", rom()->title().c_str());
-    Text("ROM Size: %ld", rom()->size());
+    Text("ROM Size: %s", core::UppercaseHexLongLong(rom()->size()).c_str());
 
     if (Button("Close", gui::kDefaultModalSize) ||
         IsKeyPressed(GetKeyIndex(ImGuiKey_Space))) {