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Old 11-22-2008, 10:58 AM
Bastian Blank
 
Default Bug#506420: incorrect hwcap line in /etc/ld.so.conf.d/libc6-xen.conf?

On Sat, Nov 22, 2008 at 10:41:01AM +0000, Richard Kettlewell wrote:
> Aurelien Jarno wrote:
>> The value in this file is the correct one.
> Where is this documented?

In the kernel.

However, I was not able to find the code which processes this hwcaps in
libc.

The traditional hwcaps are read from the interpreter data via AT_HWCAP.
The pseudo hwcaps are defined in the vdso, but I fail to find this code.

Bastian

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Immortality consists largely of boredom.
-- Zefrem Cochrane, "Metamorphosis", stardate 3219.8



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Old 11-22-2008, 05:02 PM
Aurelien Jarno
 
Default Bug#506420: incorrect hwcap line in /etc/ld.so.conf.d/libc6-xen.conf?

On Sat, Nov 22, 2008 at 12:58:38PM +0100, Bastian Blank wrote:
> On Sat, Nov 22, 2008 at 10:41:01AM +0000, Richard Kettlewell wrote:
> > Aurelien Jarno wrote:
> >> The value in this file is the correct one.
> > Where is this documented?
>
> In the kernel.
>
> However, I was not able to find the code which processes this hwcaps in
> libc.
>
> The traditional hwcaps are read from the interpreter data via AT_HWCAP.
> The pseudo hwcaps are defined in the vdso, but I fail to find this code.
>

Look at hwcap_extra in elf/ldconfig.c


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: :' : Debian developer | Electrical Engineer
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`- people.debian.org/~aurel32 | www.aurel32.net



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Old 11-23-2008, 09:25 AM
Bastian Blank
 
Default Bug#506420: incorrect hwcap line in /etc/ld.so.conf.d/libc6-xen.conf?

On Sat, Nov 22, 2008 at 07:02:26PM +0100, Aurelien Jarno wrote:
> On Sat, Nov 22, 2008 at 12:58:38PM +0100, Bastian Blank wrote:
> > The traditional hwcaps are read from the interpreter data via AT_HWCAP.
> > The pseudo hwcaps are defined in the vdso, but I fail to find this code.
> Look at hwcap_extra in elf/ldconfig.c

It is _dl_important_hwcaps in elf/dl-sysdep.c.

Bastian

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