Add gdb version of "dd" command

diff --git a/debugger/gdb/dd.py b/debugger/gdb/dd.py
new file mode 100644 (file)
index 0000000..dad8109
--- /dev/null
+++ b/debugger/gdb/dd.py
@@ -0,0 +1,51 @@
+import gdb
+
+_howTo = {
+    'fr_value_box_t *'           : ('fr_value_box_debug',              True),
+    'fr_value_box_list_t *'      : ('fr_value_box_list_debug',         True),
+    'tmpl_t *'                   : ('tmpl_debug',                      True),
+    'CONF_ITEM *'                : ('_cf_debug',                       True),
+    'dl_loader_t *'              : ('dl_loader_debug',                 False),
+    'fr_dict_gctx_t * '          : ('fr_dict_global_ctx_debug',                True),
+    'fr_pair_t *'                : ('fr_pair_debug',                   True),
+    'fr_pair_list_t *'           : ('fr_pair_list_debug',              True),
+    'fr_sbuff_term_t *'          : ('fr_sbuff_terminal_debug',         True),
+    'fr_sbuff_parse_rules_t *'   : ('fr_sbuff_parse_rules_debug',      True),
+    'fr_sbuff_unescape_rules_t *': ('fr_sbuff_unescape_debug',         True),
+    'tmpl_attr_list_head_t *'    : ('tmpl_attr_ref_list_debug',                True),
+    'tmpl_attr_rules_t *'        : ('tmpl_attr_rules_debug',           True),
+    'fr_dlist_head_t *'          : ('tmpl_extents_debug',              False),
+    'tmpl_request_list_head_t *' : ('tmpl_request_ref_list_debug',     True),
+    'tmpl_rules_t *'             : ('tmpl_rules_debug',                        True),
+    'lua_State *'                : ('_util_log_debug',                 False),
+    'xlat_exp_t *'               : ('xlat_debug',                      True)
+}
+
+class DD (gdb.Command):
+  """Display selected data structures using FreeRADIUS C calls."""
+
+  def __init__ (self):
+    super (DD, self).__init__ ("dd", gdb.COMMAND_USER)
+
+  def invoke (self, arg, from_tty):
+    # Python code goes here
+    var = gdb.parse_and_eval(arg) # really just sets up for eventual evaluation
+    isAddress = var.type.code == gdb.TYPE_CODE_PTR
+    if isAddress:
+       argMod = ''
+    else:
+       argMod = '&'
+       var = var.address
+    varType = str(var.type)
+    if not (varType in _howTo):
+       print('unsupported type "{}"'.format(varType))
+       return
+    function, const = _howTo[varType]
+    cast = '({} const *)'.format(varType[0:-2]) if const else ''
+    command = 'call {0}({1}{2}({3}))'.format(function, cast, argMod, arg)
+    try:
+       gdb.execute(command)
+    except:
+       print("command failed")
+
+DD () # Create an instance so you can run it