debug: add multiboot2 information dump tool

This patch introduces a new GDB tool `dump_mb2i` that dump the
multiboot2 information provided by the bootloader. This tool can be
invoked in the GDB console. For example in vscode:

  -exec dump_mb2i ((kapi::boot::information)bootstrap_information).mbi

The tool expects the address of the loader provided MB2 information as
its only argument.

1 files changed, 47 insertions, 0 deletions

diff --git a/scripts/gdb/load.py b/scripts/gdb/load.py
new file mode 100644
index 0000000..355f6b9
--- /dev/null
+++ b/scripts/gdb/load.py
@@ -0,0 +1,47 @@
+import sys
+import os
+import gdb
+import importlib.util
+
+script_path = os.path.abspath(__file__)
+script_root = os.path.dirname(script_path)
+repo_root = os.path.dirname(os.path.dirname(script_root))
+
+if script_root not in sys.path:
+    sys.path.insert(0, script_root)
+
+from teachos.dump_mb2i import DumpMB2I
+
+components = {
+    "kstd": "libs/kstd/gdb",
+    "kapi": "kapi/gdb",
+}
+
+for component, path in components.items():
+    full_path = os.path.join(repo_root, *path.split("/"))
+    init_file = os.path.join(full_path, "__init__.py")
+
+    if os.path.isfile(init_file):
+        try:
+            spec = importlib.util.spec_from_file_location(component, init_file)
+            module = importlib.util.module_from_spec(spec)
+            sys.modules[component] = module
+            spec.loader.exec_module(module)
+
+            if hasattr(module, "register_printers"):
+                module.register_printers(gdb.current_objfile())
+                gdb.write(f"Info: Registered pretty printers for '{component}'.\n")
+            else:
+                gdb.write(
+                    f"Warning: '{component}' does not have 'register_printers' function\n"
+                )
+        except Exception as e:
+            gdb.write(f"Warning: Failed to load '{component}' pretty printers: {e}\n")
+    else:
+        gdb.write(f"Warning: GDB extension init not found: '{init_file}'\n")
+
+gdb.write("Info: Loaded TeachOS pretty printers.\n")
+
+DumpMB2I()
+
+gdb.write("Info: Loaded TeachOS tools.\n")
\ No newline at end of file