Add printers to stage.

tools/gdb/python/classic_printer.py

@@ -0,0 +1,62 @@
+#
+# RTEMS Classic pretty printers for GDB
+#
+
+class attribute_printer:
+
+    def __init__(self, attribute):
+        ''' ToDo: Verify - usage of all '''
+        self.attr = classic.attribute(attribute,'all')
+
+    def to_string(self):
+        return gdb.Value(self.attr.to_string())
+
+class semaphore_printer:
+    """WIP: Print a Semaphore_Control object. Print using the struct display hint
+    and an iterator. """
+
+    class iterator:
+        """Use an iterator for each field expanded from the id so GDB output
+        is formatted correctly."""
+
+        def __init__(self, semaphore):
+            self.semaphore = semaphore
+            self.count = 0
+
+        def __iter__(self):
+            return self
+
+        def next(self):
+            self.count += 1
+            if self.count == 1:
+                return self.semaphore['Object']
+            elif self.count == 2:
+                attr = attribute(self.semaphore['attribute_set'],
+                                 'semaphore')
+                return attr.to_string()
+            elif self.count == 3:
+                return self.semaphore['Core_control']
+            raise StopIteration
+
+    def __init__(self, semaphore):
+        self.semaphore = semaphore
+
+    def to_string(self):
+        return ''
+
+    @staticmethod
+    def key(i):
+        if i == 0:
+            return 'Object'
+        elif i == 1:
+            return 'attribute_set'
+        elif i == 2:
+            return 'Core_control'
+        return 'bad'
+
+    def children(self):
+        counter = itertools.imap (self.key, itertools.count())
+        return itertools.izip (counter, self.iterator(self.semaphore))
+
+    def display_hint (self):
+        return 'struct'