From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-19404-listarch-gdb=sources.redhat.com@sources.redhat.com>
Received: (qmail 5061 invoked by alias); 14 Sep 2004 21:30:27 -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 5054 invoked from network); 14 Sep 2004 21:30:26 -0000
Received: from unknown (HELO main.gmane.org) (80.91.229.2)
  by sourceware.org with SMTP; 14 Sep 2004 21:30:26 -0000
Received: from root by main.gmane.org with local (Exim 3.35 #1 (Debian))
	id 1C7Ksb-0000qU-00
	for <gdb@sources.redhat.com>; Tue, 14 Sep 2004 23:30:25 +0200
Received: from pd9e8f831.dip.t-dialin.net ([217.232.248.49])
        by main.gmane.org with esmtp (Gmexim 0.1 (Debian))
        id 1AlnuQ-0007hv-00
        for <gdb@sources.redhat.com>; Tue, 14 Sep 2004 23:30:25 +0200
Received: from david.voit by pd9e8f831.dip.t-dialin.net with local (Gmexim 0.1 (Debian))
        id 1AlnuQ-0007hv-00
        for <gdb@sources.redhat.com>; Tue, 14 Sep 2004 23:30:25 +0200
To: gdb@sources.redhat.com
From: David Voit <david.voit@gmail.com>
Subject: Need help at writing basic igen simulator
Date: Tue, 14 Sep 2004 21:30:00 -0000
Message-ID: <pan.2004.09.14.21.03.59.671898@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 8bit
X-Complaints-To: usenet@sea.gmane.org
X-Gmane-NNTP-Posting-Host: pd9e8f831.dip.t-dialin.net
User-Agent: Pan/0.14.2.91 (As She Crawled Across the Table (Debian GNU/Linux))
X-SW-Source: 2004-09/txt/msg00110.txt.bz2

Hello everybody,

I writed a simple igen file and want to test it now. So I tried to
integrate it with the existing v850 sourcecode (this looked the simplest
of all igen sims) but I find it still to complex for my needs. And now I
want to ask if somebody has tried the same and has a base for a simple
igen simulator which dont need to do much but execute the instructions in
the igen file.

I dont need:

- Any sort of memory handling
- Interupts
- or any other complicated things

I just want, in the begining, write a template for all MMIX instructions.

Here is the very very simple igen file at the moment:

:model:::mmix:mmix:

:internal::::illegal:
{
  sim_io_eprintf (SD, "Illegal instruction at address 0x%lx\n",
		  (unsigned long) cia);
  sim_engine_halt (SD, CPU, NULL, cia, sim_signalled, SIM_SIGILL);
}

11100011,8.reg,16.value::::setl
"setl reg, value"
{
	/* TODO */
}

00100000,8.reg1,8.reg2,8.reg3::::add
"add reg1, reg2, reg3"
{
	/* TODO */
}

00011000,8.reg1,8.reg2,8.reg3::::mul
"mul reg1, reg2, reg3"
{
	/* TODO */
}

00100100,8.reg1,8.reg2,8.reg3::::sub
"sub reg1, reg2, reg3"
{
	/* TODO */
}

00011100,8.reg1,8.reg2,8.reg3::::div
"div reg1, reg2, reg3"
{
	/* TODO */
}

ps.:

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.

Thanks David