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Re: [patch/rfc] Eliminate TARGET_BYTE_ORDER_SELECTABLE
- From: Andrew Cagney <ac131313 at cygnus dot com>
- To: Daniel Jacobowitz <drow at mvista dot com>
- Cc: gdb-patches at sources dot redhat dot com
- Date: Sat, 19 Jan 2002 11:57:10 -0500
- Subject: Re: [patch/rfc] Eliminate TARGET_BYTE_ORDER_SELECTABLE
- References: <3C490B0C.6090601@cygnus.com> <20020119094718.A1404@nevyn.them.org>
> On Sat, Jan 19, 2002 at 12:58:36AM -0500, Andrew Cagney wrote:
>
>> Hello,
>>
>> All multi-arch targets (yep, including the i386) allow the byte order to
>> be selected at run time. This means that the macro
>> TARGET_BYTE_ORDER_SELECTABLE which was used by non-multi-arch targets is
>> obsolete.
>>
>> The attached patch eliminates that macro. I've tested it on a
>> multi-arch target and I don't think it breaks non-multi-arch targets.
>>
>> Anyway, I intend committing this in a few days.
>> Andrew
>
>
> Hmm, I don't know. Do we really want to do this? This allows, for
> instance, 'set endian big' on i386. That may someday make someone
> think that GDB supports such a beast, on the off chance one is ever
> made.
Ah, but we live in dangerous times :-)
TARGET_BYTE_ORDER_SELECTABLE, TARGET_BYTE_ORDER_SELECTABLE_P and even
TARGET_BYTE_ORDER_DEFAULT are all there just to prop up old pre-
multi-arch targets. They are not used by a multi-arch GDB.
All multi-arch architectures allow both big and little byte orders
(regardless of what the spec says). This lets the user do things like:
(gdb) print network_structure
(gdb) set endian big
(gdb) print network_structure
enjoy,
Andrew