Gentoo Archives: gentoo-dev

From: Mike Frysinger <vapier@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Re: x32 fun pants
Date: Fri, 16 Sep 2011 18:16:12
Message-Id: 201109161415.37394.vapier@gentoo.org
In Reply to: [gentoo-dev] Re: x32 fun pants by Duncan <1i5t5.duncan@cox.net>
On Friday, September 16, 2011 01:46:49 Duncan wrote:
> Mike Frysinger posted on Thu, 15 Sep 2011 17:18:43 -0400 as excerpted: > > On Thursday, September 15, 2011 17:03:07 Michał Górny wrote: > >> On Thu, 15 Sep 2011 16:33:48 -0400 Mike Frysinger wrote: > >> > On Thursday, September 15, 2011 16:12:00 Michał Górny wrote: > >> > > On Thu, 15 Sep 2011 15:34:06 -0400 Mike Frysinger wrote: > >> > > > KEYWORDS wise, i'd like to avoid having to add "x32" everywhere. > >> > > > instead, reusing "amd64". > >> > > > >> > > Hrm, wouldn't that be more like x86 keyword? AFAICS the type sizes > >> > > for x86 and x32 would match. > >> > > >> > the sizeof(long) and sizeof(void*) are the same between x86 and x32. > >> > however, that's about the only thing. for example, x32 gets access > >> > to 64bit registers when working with 64bit types (long long) and the > >> > tuple is x86_64-pc-linux- gnu. in general, it seems to be closer to > >> > amd64 than x32. > >> > >> I'm rather thinking about potential issues. But OTOH packages fixed for > >> amd64 should probably work with x32 as well. Excluding asm code which > >> would probably need a third variant then. > > > > but i'd rather not introduce another KEYWORD when we can simply p.mask > > the package, or disable the asm when ABI == x32. > > My immediate thought, probably unworkable for some reason but from here > it looks useful for at least (what would be) ~x32 and as a jump-start on > the number of ~x32 packages, and it should at least prove educational to > have it shot down (<g>)...
these things have a way of not being fixed for a very long time. p.mask in an x32 profile is a lot easier to work with and doesnt need to be "recovered" from down the line. -mike

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