RFA: document frame types, plus add missing ones

[Tom Tromey <tromey@redhat.com>]

This patch fixes PR python/12133.  The bug is that the return values for
Frame.type are not documented.

While doing this, I noticed that we didn't expose all the frame types.
So, this patch adds the missing ones as well.

Doc review needed.
Ok?

Tom

2011-01-05  Tom Tromey  <tromey@redhat.com>

	* python/py-frame.c (gdbpy_initialize_frames): Add INLINE_FRAME
	and ARCH_FRAME.

2011-01-05  Tom Tromey  <tromey@redhat.com>

	PR python/12133:
	* gdb.texinfo (Frames In Python): Document various frame
	constants.

Index: doc/gdb.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v
retrieving revision 1.783
diff -u -r1.783 gdb.texinfo
--- doc/gdb.texinfo	5 Jan 2011 05:09:52 -0000	1.783
+++ doc/gdb.texinfo	5 Jan 2011 19:51:12 -0000
@@ -22536,9 +22536,29 @@
 @end defmethod
 
 @defmethod Frame type
-Returns the type of the frame.  The value can be one of
-@code{gdb.NORMAL_FRAME}, @code{gdb.DUMMY_FRAME}, @code{gdb.SIGTRAMP_FRAME}
-or @code{gdb.SENTINEL_FRAME}.
+Returns the type of the frame.  The value can be one of:
+@table @code
+@item gdb.NORMAL_FRAME
+An ordinary stack frame.
+
+@item gdb.DUMMY_FRAME
+A fake stack frame that was created by @value{GDBN} when performing an
+inferior function call.
+
+@item gdb.INLINE_FRAME
+A frame representing an inlined function.  The function was inlined
+into a @code{gdb.NORMAL_FRAME} that is newer than this one.
+
+@item gdb.SIGTRAMP_FRAME
+A frame in a signal handler.
+
+@item gdb.ARCH_FRAME
+A fake stack frame representing a cross-architecture call.
+
+@item gdb.SENTINEL_FRAME
+This is like @code{gdb.NORMAL_FRAME}, but it is only used for the
+newest frame.
+@end table
 @end defmethod
 
 @defmethod Frame unwind_stop_reason
Index: python/py-frame.c
===================================================================
RCS file: /cvs/src/src/gdb/python/py-frame.c,v
retrieving revision 1.10
diff -u -r1.10 py-frame.c
--- python/py-frame.c	1 Jan 2011 15:33:25 -0000	1.10
+++ python/py-frame.c	5 Jan 2011 19:51:13 -0000
@@ -574,7 +574,9 @@
      That seems too messy.  */
   PyModule_AddIntConstant (gdb_module, "NORMAL_FRAME", NORMAL_FRAME);
   PyModule_AddIntConstant (gdb_module, "DUMMY_FRAME", DUMMY_FRAME);
+  PyModule_AddIntConstant (gdb_module, "INLINE_FRAME", INLINE_FRAME);
   PyModule_AddIntConstant (gdb_module, "SIGTRAMP_FRAME", SIGTRAMP_FRAME);
+  PyModule_AddIntConstant (gdb_module, "ARCH_FRAME", ARCH_FRAME);
   PyModule_AddIntConstant (gdb_module, "SENTINEL_FRAME", SENTINEL_FRAME);
   PyModule_AddIntConstant (gdb_module,
 			   "FRAME_UNWIND_NO_REASON", UNWIND_NO_REASON);