Mailing List Archive: 32 bit or 64 bit ELF on UltraSparc IIi?

32 bit or 64 bit ELF on UltraSparc IIi?

Sep 25, 2007, 7:30 PM

Post #1 of 3 (2967 views)

Hello All,

I'm confused about why I'm compiling 32 bit ELF despite having a 64 bit
kernel (see following evidence from 'file' command).

/lib/modules/2.6.22-gentoo-r5/kernel/drivers/net/sunhme.ko: ELF 64-bit
MSB relocatable, SPARC V9, version 1 (SYSV), not stripped

/bin/ls: ELF 32-bit MSB executable, SPARC32PLUS, V8+ Required, version 1
(SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs),
stripped

My CHOST is "sparc-unknown-linux-gnu", but apparently I'm not meant to
change this to sparc64-unknown-linux-gnu?

Thanks very much,
Frank.

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Re: 32 bit or 64 bit ELF on UltraSparc IIi? [ In reply to ]

jmbsvicetto at gentoo

Sep 26, 2007, 2:30 AM

Post #2 of 3 (2842 views)

Permalink

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Hi Francis.

Francis Barber wrote:
> Hello All,
>
> I'm confused about why I'm compiling 32 bit ELF despite having a 64 bit
> kernel (see following evidence from 'file' command).
>

As stated on the devmanual
http://devmanual.gentoo.org/archs/sparc/index.html "v9 systems use a
pure 64 bit kernel and a pure 32 bit userland".

- --
Regards,

Jorge Vicetto (jmbsvicetto) - jmbsvicetto at gentoo dot org
Gentoo- forums / Userrel / SPARC
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Re: 32 bit or 64 bit ELF on UltraSparc IIi? [ In reply to ]

weeve3 at gmail

Sep 26, 2007, 6:15 AM

Post #3 of 3 (2858 views)

Permalink

> My CHOST is "sparc-unknown-linux-gnu", but apparently I'm not meant to
> change this to sparc64-unknown-linux-gnu?

This is correct. While there is a sparc64-unknown-linux-gnu setup
floating around, it is strictly for compiling the kernel. Also, there
are some ebuilds (like glibc) that may depend on
sparc-unknown-linux-gnu existing or they will fail.

As for why userland is 32 bits, take a look at the whole thread on
this topic from the sparclinux mailing list archives[1]. While it is
a bit dated, I believe the information is still relevant.

[1] - http://marc.info/?l=linux-sparc&m=99706001104013&w=2

Cheers,
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Jason Wever
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