debug: improve pretty printer implementations

2 files changed, 35 insertions, 1 deletions

diff --git a/scripts/gdb/pretty_printers.py b/scripts/gdb/pretty_printers.py
index 83db491..c209328 100644
--- a/scripts/gdb/pretty_printers.py
+++ b/scripts/gdb/pretty_printers.py
@@ -4,7 +4,11 @@ import gdb
 import importlib.util
 
 script_path = os.path.abspath(__file__)
-repo_root = os.path.dirname(os.path.dirname(os.path.dirname(script_path)))
+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)
 
 components = {
     "kstd": "libs/kstd/gdb",
diff --git a/scripts/gdb/teachos/__init__.py b/scripts/gdb/teachos/__init__.py
new file mode 100644
index 0000000..d90d6ad
--- /dev/null
+++ b/scripts/gdb/teachos/__init__.py
@@ -0,0 +1,30 @@
+import gdb
+
+
+class TeachOSBasePrinter:
+    def __init__(self, val):
+        self.__val = val
+
+    @property
+    def value(self):
+        return self.__val
+
+    def children(self):
+        real_type = self.value.type.strip_typedefs()
+
+        if real_type.code not in (gdb.TYPE_CODE_STRUCT, gdb.TYPE_CODE_UNION):
+            return
+
+        for field in real_type.fields():
+            if field.artificial:
+                continue
+
+            try:
+                if field.is_base_class:
+                    yield (field.name, self.value.cast(field.type))
+                elif field.name is not None:
+                    yield (field.name, self.value[field.name])
+                else:
+                    yield ("<anonymous>", self.value[field])
+            except gdb.error:
+                yield (str(field.name), "<unreadable>")