2003-10-06 Andrew Cagney <cagney@redhat.com>

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

diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index ad1efdf353b3d548f44d4e8e44d1de3d95fc2f2c..8d17280fc9afa630293885479d324e299d9bb3ec 100644 (file)
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -30,25 +30,6 @@ struct regcache;
 
 #include "frame.h"             /* For enum frame_type.  */
 
-/* Return the frame unwind methods for the function that contains PC,
-   or NULL if this this unwinder can't handle this frame.  */
-
-typedef const struct frame_unwind *(frame_unwind_p_ftype) (CORE_ADDR pc);
-
-/* Add a frame unwinder to the list.  The predicates are polled in the
-   order that they are appended.  The initial list contains the dummy
-   frame's predicate.  */
-
-extern void frame_unwind_append_predicate (struct gdbarch *gdbarch,
-                                          frame_unwind_p_ftype *p);
-
-/* Iterate through the list of frame unwinders until one returns an
-   implementation.  */
-
-extern const struct frame_unwind *frame_unwind_find_by_pc (struct gdbarch
-                                                          *gdbarch,
-                                                          CORE_ADDR pc);
-
 /* The following unwind functions assume a chain of frames forming the
    sequence: (outer) prev <-> this <-> next (inner).  All the
    functions are called with called with the next frame's `struct
@@ -139,4 +120,22 @@ struct frame_unwind
   frame_prev_register_ftype *prev_register;
 };
 
+/* Given the NEXT frame, take a wiff of THIS frame's registers (namely
+   the PC and attributes) and if it is the applicable unwinder return
+   the unwind methods, or NULL if it is not.  */
+
+typedef const struct frame_unwind *(frame_unwind_sniffer_ftype) (struct frame_info *next_frame);
+
+/* Add a frame sniffer to the list.  The predicates are polled in the
+   order that they are appended.  The initial list contains the dummy
+   frame sniffer.  */
+
+extern void frame_unwind_append_sniffer (struct gdbarch *gdbarch,
+                                        frame_unwind_sniffer_ftype *sniffer);
+
+/* Iterate through the next frame's sniffers until one returns with an
+   unwinder implementation.  */
+
+extern const struct frame_unwind *frame_unwind_find_by_frame (struct frame_info *next_frame);
+
 #endif