* windows-tdep.c (windows_get_tlb_type): Remember last GDBARCH

[deliverable/binutils-gdb.git] / gdb / frame-unwind.h

diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index bd45fa90393bc53a04a17422c0d5ca621fe6765f..9079e5d249766574c37e7ab739379cd6653e91f6 100644 (file)
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -1,6 +1,7 @@
 /* Definitions for a frame unwinder, for GDB, the GNU debugger.
 
-   Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010
+   Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -121,6 +122,13 @@ typedef struct value * (frame_prev_register_ftype)
 typedef void (frame_dealloc_cache_ftype) (struct frame_info *self,
                                          void *this_cache);
 
+/* Assuming the frame chain: (outer) prev <-> this <-> next (inner);
+   use THIS frame, and implicitly the NEXT frame's register unwind
+   method, return PREV frame's architecture.  */
+
+typedef struct gdbarch *(frame_prev_arch_ftype) (struct frame_info *this_frame,
+                                                void **this_prologue_cache);
+
 struct frame_unwind
 {
   /* The frame's type.  Should this instead be a collection of
@@ -133,6 +141,7 @@ struct frame_unwind
   const struct frame_data *unwind_data;
   frame_sniffer_ftype *sniffer;
   frame_dealloc_cache_ftype *dealloc_cache;
+  frame_prev_arch_ftype *prev_arch;
 };
 
 /* Register a frame unwinder, _prepending_ it to the front of the