From: Arnd Bergmann <arnd@arndb.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: x32-abi@googlegroups.com, "H.J. Lu" <hjl.tools@gmail.com>,
GCC Development <gcc@gcc.gnu.org>,
GNU C Library <libc-alpha@sourceware.org>,
LKML <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@linux.intel.com>
Subject: Re: X32 psABI status
Date: Sun, 13 Feb 2011 23:28:14 +0100 [thread overview]
Message-ID: <201102132328.15360.arnd@arndb.de> (raw)
In-Reply-To: <4D584A49.80306@zytor.com>
On Sunday 13 February 2011, 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.
As far as I know, any task can already call both the 32 and 64 bit syscall
entry points on x86. Is there anything you can't do just as well by
using a combination of the two methods, without introducing a third one?
Arnd
next prev parent reply other threads:[~2011-02-13 22:28 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-12 19:41 X32 psABI status H.J. Lu
2011-02-12 21:10 ` Florian Weimer
2011-02-12 21:29 ` H.J. Lu
2011-02-12 23:04 ` H. Peter Anvin
2011-02-13 3:02 ` Andrew Pinski
2011-02-13 8:48 ` Florian Weimer
2011-02-13 13:45 ` H.J. Lu
2011-02-13 15:07 ` Florian Weimer
2011-02-13 15:13 ` H.J. Lu
2011-02-13 15:21 ` Florian Weimer
2011-02-13 15:37 ` H.J. Lu
2011-02-13 16:35 ` Petr Baudis
2011-02-13 16:48 ` H.J. Lu
2011-02-13 17:37 ` Joseph S. Myers
2011-02-13 15:43 ` Maciej W. Rozycki
2011-02-13 15:57 ` H.J. Lu
2011-02-13 20:10 ` Arnd Bergmann
2011-02-13 21:10 ` H.J. Lu
2011-02-13 21:16 ` H. Peter Anvin
2011-02-13 21:28 ` H.J. Lu
2011-02-13 22:03 ` H. Peter Anvin
2011-02-13 22:12 ` H.J. Lu
2011-02-13 21:33 ` Alan Cox
2011-02-14 1:52 ` H. Peter Anvin
2011-02-13 22:27 ` H. Peter Anvin
2011-02-13 22:28 ` Arnd Bergmann [this message]
2011-02-13 22:46 ` H. Peter Anvin
2011-02-13 22:57 ` Arnd Bergmann
2011-02-13 23:03 ` H.J. Lu
2011-02-13 23:39 ` Alan Cox
2011-02-13 23:50 ` H.J. Lu
2011-02-14 1:59 ` H. Peter Anvin
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