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Re: X32 psABI status

From: Florian Weimer <fw at deneb dot enyo dot de>
To: x32-abi at googlegroups dot com
Cc: "H.J. Lu" <hjl dot tools at gmail dot com>, GCC Development <gcc at gcc dot gnu dot org>, GNU C Library <libc-alpha at sourceware dot org>, LKML <linux-kernel at vger dot kernel dot org>
Date: Sun, 13 Feb 2011 09:48:03 +0100
Subject: Re: X32 psABI status
References: <AANLkTikgfv+L9WS4s6n5mQcXWTzc6YMNUSsgBiAOmKbE@mail.gmail.com><87aai1gdr7.fsf@mid.deneb.enyo.de> <4D5711E0.7020306@zytor.com>

* H. Peter Anvin:

> On 02/12/2011 01:10 PM, Florian Weimer wrote:
>> Why is the ia32 compatiblity kernel interface used?
>
> Because there is no way in hell we're designing in a second
> compatibility ABI in the kernel (and it has to be a compatibility ABI,
> because of the pointer size difference.)

Actually, I'm wondering if you can do the translation in user space.
There already are 32-on-64 implementations in existence, without
kernel changes (recent Hotspot, LuaJIT, and probably some more).

Follow-Ups:
- Re: X32 psABI status
  - From: H.J. Lu

References:
- X32 psABI status
  - From: H.J. Lu
- Re: X32 psABI status
  - From: Florian Weimer
- Re: X32 psABI status
  - From: H. Peter Anvin

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