From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: musl 0.9.3 released
Date: Sun, 5 Aug 2012 14:29:31 -0400 [thread overview]
Message-ID: <20120805182931.GK544@brightrain.aerifal.cx> (raw)
In-Reply-To: <20120806004336.1306937b@sibserver.ru>
On Mon, Aug 06, 2012 at 12:43:36AM +0800, orc wrote:
> Also, does x32 run on plain x86_64? If it does, then probably that
It's a separate ABI in userspace (and has some new syscalls for
situations where it's necessary to interface with the kernel using a
structure that looks different in userspace due to containing
pointers), but it runs on a standard 64-bit kernel that's new enough
to have x32 support.
It's possible to mix x32 and normal x86_64 ABI binaries on the same
system, but for dynamic linking they need their own separate library
paths.
> large apps like Firefox can be compiled and run in that mode can have
> benefits. If it is required that you must run only x32 kernel, then I
> see no it's benefits currently. It will be much easier to run plain 32
> bits Firefox.
Plain 32-bit apps are moderately slower due to not having access to
64-bit arithmetic and the really inefficient i386 ABI. I've heard the
difference can be 5-20% depending on the application.
Rich
next prev parent reply other threads:[~2012-08-05 18:29 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 2:36 Rich Felker
2012-08-03 14:01 ` Gregor Richards
2012-08-05 1:00 ` idunham
2012-08-05 3:58 ` John Spencer
2012-08-05 4:56 ` idunham
2012-08-05 5:22 ` Rich Felker
2012-08-05 16:31 ` orc
2012-08-05 16:43 ` orc
2012-08-05 17:05 ` Daniel Cegiełka
2012-08-05 18:29 ` Rich Felker [this message]
2012-08-05 16:46 ` Rich Felker
2012-08-05 17:18 ` orc
2012-08-05 23:39 ` Isaac Dunham
2012-08-05 12:30 ` x32 (was: Re: [musl] musl 0.9.3 released) John Spencer
2012-08-05 12:46 ` Daniel Cegiełka
2012-08-05 12:58 ` Kurt H Maier
2012-08-05 13:15 ` Daniel Cegiełka
2012-08-05 13:32 ` x32 Anthony G. Basile
2012-08-05 14:13 ` x32 Daniel Cegiełka
2012-08-05 13:19 ` x32 Anthony G. Basile
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