From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-19421-listarch-gdb=sources.redhat.com@sources.redhat.com>
Received: (qmail 31166 invoked by alias); 15 Sep 2004 19:41:08 -0000
Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:gdb-subscribe@sources.redhat.com>
List-Archive: <http://sources.redhat.com/ml/gdb/>
List-Post: <mailto:gdb@sources.redhat.com>
List-Help: <mailto:gdb-help@sources.redhat.com>, <http://sources.redhat.com/ml/#faqs>
Sender: gdb-owner@sources.redhat.com
Received: (qmail 31112 invoked from network); 15 Sep 2004 19:41:06 -0000
Received: from unknown (HELO mproxy.gmail.com) (64.233.170.192)
  by sourceware.org with SMTP; 15 Sep 2004 19:41:06 -0000
Received: by mproxy.gmail.com with SMTP id 79so214478rnk
        for <gdb@sources.redhat.com>; Wed, 15 Sep 2004 12:40:37 -0700 (PDT)
Received: by 10.38.14.78 with SMTP id 78mr45475rnn;
        Wed, 15 Sep 2004 12:40:31 -0700 (PDT)
Received: by 10.38.171.3 with HTTP; Wed, 15 Sep 2004 12:40:31 -0700 (PDT)
Message-ID: <3bd8154f040915124046708905@mail.gmail.com>
Date: Wed, 15 Sep 2004 19:41:00 -0000
From: David Voit <david.voit@gmail.com>
Reply-To: David Voit <david.voit@gmail.com>
To: Andrew Cagney <cagney@gnu.org>
Subject: Re: Need help at writing basic igen simulator
Cc: gdb@sources.redhat.com
In-Reply-To: <41476C5D.4050209@gnu.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
References: <pan.2004.09.14.21.03.59.671898@gmail.com>
	 <41476C5D.4050209@gnu.org>
X-SW-Source: 2004-09/txt/msg00127.txt.bz2

On Tue, 14 Sep 2004 18:10:37 -0400, Andrew Cagney <cagney@gnu.org> wrote:
> If you leave this out:
> 
> > {
> >       /* TODO */
> > }
> 
> igen should automatically generate code to throw an unimplemented
> instruction exception.
>

Thats why it is there :). I want to first write the skeleton for a
simulator before doing the actually simulator work.
 
> > If i write the instruction identifer in hexform like this
> > "8.0xe3,8.reg,16.value::::setl" igen fails with "ld-insn.c:293: assertion
> > failed - word->first->last < 0" it this the correct behavior.
> 
> Hmm, forgotten that it was possible to specify hex values.  Looking at
> the mn10300, I think you need:
> 
> :option:::insn-specifying-widths:true

I look at this.

> I've not tried to bring up an IGEN simulator from scratch for some years
> - the onces I worked on were rewrites of existing hand written simulators.

Thanks for your fast answer. I now try to strip my code (v850 copy)
down to a minimum.

David