From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ben Elliston <bje@redhat.com>
To: lehotsky@earthlink.net
Cc: cgen@sourceware.cygnus.com
Subject: Re: debugging help?
Date: Tue, 08 May 2001 16:33:00 -0000
Message-id: <15096.33343.222519.11808@scooby.apac.redhat.com>
References: <200105081641.MAA04422@iron.>
X-SW-Source: 2001-q2/msg00040.html

>>>>> "lehotsky" == lehotsky  <lehotsky@earthlink.net> writes:

  lehotsky> the cgen code doesn't seem to issue very useful error messages.
  lehotsky> Any suggestions on how to track down this problem?

I see Frank has already answered, this, however ..

  lehotsky> Computing sformat argument buffers ...
  lehotsky> ERROR: bad bitsize argument to gen-ifetch 4
  lehotsky> No backtrace available.
  lehotsky> make[1]: *** [cgen-cpu-decode] Error 1

It so happens that I recognise this one.  It is often caused by
instruction formats (the "(+ ...)" clause) missing one or more
bits--or containing overlapping ifields.

Ben