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Re: X32 psABI status

From: "H. Peter Anvin" <hpa at zytor dot com>
To: x32-abi at googlegroups dot com
Cc: "H.J. Lu" <hjl dot tools at gmail dot com>, Arnd Bergmann <arnd at arndb dot de>, 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>, "H. Peter Anvin" <hpa at linux dot intel dot com>
Date: Sun, 13 Feb 2011 14:27:12 -0800
Subject: Re: X32 psABI status
References: <AANLkTikgfv+L9WS4s6n5mQcXWTzc6YMNUSsgBiAOmKbE@mail.gmail.com> <201102132110.29630.arnd@arndb.de> <AANLkTimZA1Npf0nJ8PF-2=8Oe2LXr_ShyBJNkf8Dn5S5@mail.gmail.com> <4D584A49.80306@zytor.com>

On 02/13/2011 01:16 PM, H. Peter Anvin wrote:
> 
> The actual idea is to use the i386 compat ABI for memory layout, but
> with a 64-bit register convention.  That means that system calls that
> don't make references to memory structures can simply use the 64-bit
> system calls, otherwise we're planning to reuse the i386 compat system
> calls, but invoke them via the syscall instruction (which requires a new
> system call table) and to pass 64-bit arguments in single registers.
> 

Oh, and as to why not copy the i386 system call list straight off... we
don't really want to add a new ABI with crap like sys_socketcall.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

References:
- X32 psABI status
  - From: H.J. Lu
- Re: X32 psABI status
  - From: Arnd Bergmann
- Re: X32 psABI status
  - From: H.J. Lu
- Re: X32 psABI status
  - From: H. Peter Anvin

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