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Hello,
This patch (based on my tramp branch) extends frame-unwind so that it is easier to parameterize an unwinder with both static (unwind_data) and dynamic (this_prologue_cache) information. It does this by adding a "static" method (i.e., callable before an instance of the unwinder has been created) to the frame_unwind object.
I've now managed to trim things back to the point where no existing code is affected. With this in place it becomes possible to implement the tramp frame.
I previously posted a draft version of this patch here: http://sources.redhat.com/ml/gdb-patches/2004-03/msg00353.html
Baring comments, I'll look to commit in a few days, Andrew
2004-03-17 Andrew Cagney <cagney@redhat.com>
* frame-unwind.h: Update copyright. (struct frame_data): Add opaque declaration. (frame_sniffer_ftype): Declare. (struct frame_unwind): Add "unwind_data" and "sniffer". (frame_unwind_register_unwinder): Declare. (frame_unwind_find_by_frame): Add parameter "this_cache". * frame-unwind.c (struct frame_unwind_table_entry): Add field "unwinder". (frame_unwind_register_unwinder): New function. (frame_unwind_find_by_frame): Handle an unwind sniffer. * frame.c (get_frame_id, create_new_frame, legacy_get_prev_frame) (legacy_get_prev_frame, legacy_get_prev_frame) (get_frame_type): Pass the prologue_cache to frame_unwind_find_by_frame.
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