diff options
Diffstat (limited to 'gdb/frame-unwind.h')
| -rw-r--r-- | gdb/frame-unwind.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h index 49f2889..12d6dd2 100644 --- a/gdb/frame-unwind.h +++ b/gdb/frame-unwind.h @@ -131,11 +131,14 @@ struct frame_unwind frame_sniffer_ftype *sniffer; }; -/* Register a frame unwinder, _appending_ it to the end of the search - list. */ -extern void frame_unwind_register_unwinder (struct gdbarch *gdbarch, - const struct frame_unwind *unwinder); - +/* Register a frame unwinder, _prepending_ it to the front of the + search list (so it is sniffed before previously registered + unwinders). By using a prepend, later calls can install unwinders + that override earlier calls. This allows, for instance, an OSABI + to install a a more specific sigtramp unwinder that overrides the + traditional brute-force unwinder. */ +extern void frame_unwind_prepend_unwinder (struct gdbarch *gdbarch, + const struct frame_unwind *unwinder); /* 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 |