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[RFA] Add set/show debug unwind command
- From: Tristan Gingold <gingold at adacore dot com>
- To: "gdb-patches at sourceware dot org ml" <gdb-patches at sourceware dot org>
- Date: Fri, 15 Jun 2012 09:51:09 +0200
- Subject: [RFA] Add set/show debug unwind command
Hi,
while working on the Win64 SEH unwinder (my next patch), I have found useful to have a debug flag for unwinder.
Tested by building gdb.
Tristan.
2012-06-15 Tristan Gingold <gingold@adacore.com>
* frame-unwind.c (show_unwind_debug): New function
(unwind_debug): New variable.
(_initialize_frame_unwind): Add show debug unwind command.
* frame-unwind.h (unwind_debug): Declare.
diff --git a/gdb/frame-unwind.c b/gdb/frame-unwind.c
index c90144f..e6035cc 100644
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -27,6 +27,8 @@
#include "exceptions.h"
#include "gdb_assert.h"
#include "gdb_obstack.h"
+#include "command.h"
+#include "gdbcmd.h"
static struct gdbarch_data *frame_unwind_data;
@@ -237,6 +239,17 @@ frame_unwind_got_address (struct frame_info *frame, int regnum,
return reg_val;
}
+/* Flag to control debugging. */
+
+int unwind_debug;
+static void
+show_unwind_debug (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("unwind debugging is %s.\n"), value);
+}
+
+
/* -Wmissing-prototypes */
extern initialize_file_ftype _initialize_frame_unwind;
@@ -244,4 +257,14 @@ void
_initialize_frame_unwind (void)
{
frame_unwind_data = gdbarch_data_register_pre_init (frame_unwind_init);
+
+ /* Debug this files internals. */
+ add_setshow_zinteger_cmd ("unwind", class_maintenance, &unwind_debug, _("\
+Set unwind debugging."), _("\
+Show unwind debugging."), _("\
+When non-zero, frame specific internal debugging is enabled."),
+ NULL,
+ show_unwind_debug,
+ &setdebuglist, &showdebuglist);
+
}
diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index f82d763..64405b9 100644
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -217,4 +217,8 @@ struct value *frame_unwind_got_bytes (struct frame_info *frame, int regnum,
struct value *frame_unwind_got_address (struct frame_info *frame, int regnum,
CORE_ADDR addr);
+/* Flag to control debugging. */
+
+extern int unwind_debug;
+
#endif