[debugger] Improve symbol auto-loading

Author: drhelius

MCP_README.md

@@ -271,7 +271,7 @@ The server exposes tools organized in the following categories:
 
 ### Media & State Management
 - `get_media_info` - Get loaded ROM info (file path, type, size, CRC, rotation, EEPROM, BIOS status)
-- `load_media` - Load ROM file (.lnx, .lyx, .o, .zip). Automatically loads .sym symbol file if present
+- `load_media` - Load ROM file (.lnx, .lyx, .o, .zip). Automatically loads symbol file if present (.sym, .lbl, .noi)
 - `list_save_state_slots` - List all 5 save state slots with information (rom name, timestamp, screenshot availability)
 - `select_save_state_slot` - Select active save state slot (1-5) for save/load operations
 - `save_state` - Save emulator state to currently selected slot

README.md

@@ -133,7 +133,7 @@ Don't hesitate to report bugs or ask for new features by [opening an issue](http
 ### Debugging Features
 - **Docking Windows**: In debug mode, you can dock windows together by pressing SHIFT and dragging a window onto another.
 - **Multi-viewport**: In Windows or macOS, you can enable "multi-viewport" in the debug menu. You must restart the emulator for the change to take effect. Once enabled, you can drag debugger windows outside the main window.
-- **Debug Symbols**: The emulator automatically tries to load a symbol (.sym) file when loading a ROM. For example, for ```path_to_rom_file.rom``` it tries to load ```path_to_rom_file.sym```. You can also load symbol files using the GUI or the CLI. It supports *cc65* (VICE label file), *lyxass* (EQU) and *mads* (lab and hea) file formats.
+- **Debug Symbols**: The emulator automatically tries to load a symbol file when loading a ROM. For example, for ```path_to_rom_file.rom``` it tries to load ```path_to_rom_file.sym```, ```path_to_rom_file.lbl``` and ```path_to_rom_file.noi```. You can also load symbol files using the GUI or the CLI. It supports *cc65* (VICE label file), *lyxass* (EQU) and *mads* (lab and hea) file formats.
 
 ### Command Line Usage
 ```

platforms/shared/README.txt

@@ -99,9 +99,9 @@ Debugging Features:
   - Multi-viewport: In Windows or macOS, you can enable "multi-viewport" in the
     debug menu. You must restart the emulator for the change to take effect.
     Once enabled, you can drag debugger windows outside the main window
-  - Debug Symbols: The emulator automatically tries to load a symbol (.sym) file
-    when loading a ROM. It supports cc65 (VICE label file), lyxass (EQU) and
-    mads (lab and hea) file formats
+  - Debug Symbols: The emulator automatically tries to load a symbol file
+    (.sym, .lbl, .noi) when loading a ROM. It supports cc65 (VICE label file),
+    lyxass (EQU) and mads (lab and hea) file formats
 
 MCP Server:
   - Gearlynx includes a Model Context Protocol (MCP) server that enables

platforms/shared/desktop/gui.cpp

@@ -290,8 +290,9 @@ void gui_load_rom(const char* path)
 
     std::string str(path);
     str = str.substr(0, str.find_last_of("."));
-    str += ".sym";
-    gui_debug_load_symbols_file(str.c_str());
+    if (!gui_debug_load_symbols_file((str + ".sym").c_str()))
+        if (!gui_debug_load_symbols_file((str + ".lbl").c_str()))
+            gui_debug_load_symbols_file((str + ".noi").c_str());
 
     gui_debug_auto_load_settings();
 

platforms/shared/desktop/gui_debug_disassembler.cpp

@@ -158,7 +158,7 @@ void gui_debug_reset_disassembler_bookmarks(void)
     bookmarks.clear();
 }
 
-void gui_debug_load_symbols_file(const char* file_path)
+bool gui_debug_load_symbols_file(const char* file_path)
 {
     std::ifstream file;
     open_ifstream_utf8(file, file_path, std::ios::in);
@@ -221,10 +221,12 @@ void gui_debug_load_symbols_file(const char* file_path)
         }
 
         file.close();
+        return true;
     }
     else
     {
         Debug("Symbol file %s not found", file_path);
+        return false;
     }
 }
 

platforms/shared/desktop/gui_debug_disassembler.h

@@ -41,7 +41,7 @@ EXTERN void gui_debug_disassembler_reset(void);
 EXTERN void gui_debug_reset_symbols(void);
 EXTERN void gui_debug_reset_breakpoints(void);
 EXTERN void gui_debug_reset_disassembler_bookmarks(void);
-EXTERN void gui_debug_load_symbols_file(const char* file_path);
+EXTERN bool gui_debug_load_symbols_file(const char* file_path);
 EXTERN void gui_debug_toggle_breakpoint(void);
 EXTERN void gui_debug_add_bookmark(void);
 EXTERN void gui_debug_add_symbol(void);

platforms/shared/desktop/mcp/mcp_server.cpp

@@ -751,7 +751,7 @@ void McpServer::HandleToolsList(const json& request)
     tools.push_back({
         {"name", "load_media"},
         {"title", "Load ROM"},
-        {"description", "Load a ROM file (.lnx, .lyx, .o, .zip). Automatically loads .sym symbol file if present. Resets emulator on successful load"},
+        {"description", "Load a ROM file (.lnx, .lyx, .o, .zip). Automatically loads symbol file if present (.sym, .lbl, .noi). Resets emulator on successful load"},
         {"inputSchema", {
             {"type", "object"},
             {"properties", {