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[rfc] trad-frame change
- From: Andrew Cagney <cagney at gnu dot org>
- To: gdb-patches at sources dot redhat dot com
- Date: Wed, 03 Mar 2004 11:43:20 -0500
- Subject: [rfc] trad-frame change
Think of this as a pseudo patch.
I'm looking to extend the trad-frame code so that it includes the interface:
trad_frame_append (gdbarch, frame_type, frame_sniffer, frame_cache);
This would do all the housekeeping necessary to create a FRAME_TYPE
unwinder implemented with FRAME_SNIFFER and FRAME_CACHE functions. The
second function would have the interface:
struct trad_frame_cache
{
struct frame_id this_id;
CORE_ADDR this_base;
struct trad_frame *saved_regs;
};
void frame_cache (struct frame_info *next_frame, struct
trad_frame_cache *this_cache);
and would be called _once_ to populate the entire trad-frame cache.
After that frame ID and register requests would be handled directly.
My rationale is simple. Having just churned out unwinders for two
architectures I'm seeing a pattern that suggests this would make life
easier:
- people in a hurry can use interface
- people wanting to tune their unwinder can use the lower-level interface
thoughts?
Andrew
PS: This has been suggested before, but not as a new layer above the
existing unwinder code