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Message-ID: <39597914.A53FD52E@centurytel.net>
Date: Tue, 27 Jun 2000 23:03:32 -0500
From: chiragz <chiragz@centurytel.net>
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To: Michael Meissner <meissner@cygnus.com>
CC: cygwin@sourceware.cygnus.com
Subject: Re: Cross GCC for AS400
References: <39595A75.7AE2133E@centurytel.net> <20000627233708.56578@cse.cygnus.com>
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Hi,

    I was asking because IBM itself does not differentiate much between the newer
AS400e CPUs and the RS/6000. In fact I have heard that OS/400 V4R4 has some
facilities that allow you to directly access the CPU and operate in RS/6000 mode,

not supporting OSes but applications.
On purpose or otherwise, sounds very interesting.

    Is there a way for Cross GCC to spit out the p-code or directly the RS/6000
instructions ? I have the powerpc-eabi Gcc Cross but wanted to know about the
AS/400.

-Chirag

Michael Meissner wrote:

> On Tue, Jun 27, 2000 at 08:52:53PM -0500, chiragz wrote:
> > Hi,
> >
> >     AS400 is PowerPC right ? How do I use Cross GCC to compile for the
> > AS400 ?
>
> I don't believe you ever see the PowerPC bits of the AS400.  IIRC, there is a
> virtual machine on top of the raw hardware that is the real machine that you
> see.  I also recall that the PowerPC used was not a standard PowerPC, so even
> if you could access to the raw machine, it might not have all of the PowerPC
> instructions.
>
> --
> Michael Meissner, Red Hat, Inc.
> PMB 198, 174 Littleton Road #3, Westford, Massachusetts 01886, USA
> Work:     meissner@redhat.com           phone: +1 978-486-9304
> Non-work: meissner@spectacle-pond.org   fax:   +1 978-692-4482


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