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Date: Mon, 05 May 2014 10:02:00 -0000
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From: Mark Kettenis <mark.kettenis@xs4all.nl>
To: arnez@linux.vnet.ibm.com
CC: gdb-patches@sourceware.org
In-reply-to: <87vbtt3hkr.fsf@br87z6lw.de.ibm.com> (message from Andreas Arnez	on Mon, 28 Apr 2014 11:54:12 +0200)
Subject: Re: [RFC 12/23] regcache: Add functions suitable for regset_supply/collect.
References: <87eh0h6bkq.fsf@br87z6lw.de.ibm.com> <87vbtt3hkr.fsf@br87z6lw.de.ibm.com>
X-SW-Source: 2014-05/txt/msg00041.txt.bz2

> From: Andreas Arnez <arnez@linux.vnet.ibm.com>
> Date: Mon, 28 Apr 2014 11:54:12 +0200
> 
> These functions are intended to suit all targets that don't require too
> special logic in their regset supply/collect methods.  Having such
> generic functions helps reducing target-specific complexity.
> 
> gdb/
> 	* regcache.c: Include "regset.h".
> 	(regcache_supply_regset, regcache_collect_regset): New functions.
> 	* regcache.h (struct regcache_map_entry): New structure.
> 	(REGCACHE_MAP_SKIP_BYTES): New enum value.
> 	(regcache_supply_regset, regcache_collect_regset): New prototypes.

Sorry, but this doesn't strike me as a particular good interface.
I'd say an approach that uses explicit offsets would be much better.