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[ILUG] braun's choice?

[ILUG] braun's choice?

Paul Jakma paul at clubi.ie
Fri Jul 1 06:31:28 IST 2005


On Thu, 30 Jun 2005, Braun Brelin wrote:

Braun - you didn't attribute the text you quoted, bad bad Braun.

>> [1] The nomenclature is hopelessly confused:  AMD say that 
>> "x86_64" (their original term for the extended architecture) is 
>> now deprecated and that everyone should say "AMD64", but that of 
>> course would make an awkward way to encompass Intel's compatible 
>> EM64T implementation that competes with AMD's.  A minority in the 
>> Linux community, such as the Debian Project, call the architecture 
>> "amd64"; I follow the most-common usage and say "x86_64", since 
>> the term is vendor-neutral.

EMT64T and AMD64 are different architectures, very similar but with 
differences - hence their usage is valid. They both support the 
x86-64 ABI. (And it's x86-64 btw, the s/-/_/ is due to some package 
management systems not liking - in the arch name i think).

>> Itanium/Itanium2 (dubbed "Itanic" by TheReg) architecture -- whose
>> existence hints at one of the problems with "lib64" directories: the
>> a namespace collision with Itanium.

Waffle.

lib64 is a long-standing convention on multi-ABI systems. See IRIX on 
MIPS (o32/n32/n64) and Solaris on UltraSPARC and (more recently) 
x86-64.

The correct way to do this btw is to not consider x86-64 a different 
user-space architecture, with a different OS, but to just treat 
x86-64 as another ix86 ABI..

Linux distros appear still to be quite immature wrt multi-ABI 
compared to IRIX 6.5 and Solaris (iirc) 7+.

regards,
-- 
Paul Jakma	paul at clubi.ie	paul at jakma.org	Key ID: 64A2FF6A
Fortune:
"We Americans, we're a simple people... but piss us off, and we'll bomb
your cities."
-- Robin Williams, _Good Morning Vietnam_



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