Subject: Re: LP64 advice
To: matthew green <mrg@eterna.com.au>
From: john heasley <heas@shrubbery.net>
List: port-sparc64
Date: 01/26/2003 04:58:44
Sat, Jan 25, 2003 at 04:49:02PM +1100, matthew green:
>
> so, i switched my desktop from a ss20 to an ultra 2, the weekend
> before sparc smp went it (had i known, i would have waited), to
> get more cpu. i am having problems with X on a gx+. there
> are a few issues that seem to be LP64 related. eg:
>
> - kbd leds are not handled properly
> - Xsun bus-error when colormap switches (think i've nailed this one)
> etc.
>
> to be sure i'm doing something which will be accepted for commit, is there
> some web-page with guidelines for making things LP64 safe?
>
> for example; there are several uses of (unsigned) longs. in this case,
> so far, most of these seem to be harmless, but i've found a few that
> really should be a 32bit int. when folks are making LP64 fixes, is it
> customary to just leave longs that do not matter as is, or make them of
> the "intended" type?
>
>
> well, it depends.. it's usually better to clean this up anyway
> but if it's really huge amounts of code change for no real
> reason i tend to avoid it and just do the necessary parts.
>
> are you using xsrc/xc or xsrc/xfree ? it would be nice if you
> were using the latter...
thanks. i didnt realize that xfree had sparc servers, but i will
restart with xfree.
i figured a good starting point might be to clean-up the o/p of
gcc -Wall...
what is normally done for printfs of addresses? eg
printf("%d", ptr - otherptr);
i noticed jason's comment
Use <inttypes.h> and PRIx64 or the like.
but i can't figure out if this is portable and doesnt seem to apply
to addresses.
>
> thanks for working on this!
heh, dont thank me yet. :)