sun
   microsystems              Systems Architecture Committee

_________________________________________________________________

Subject:       PowerPC Commands

Submitted by:  Brian H.

File:          psarc/1994/197/opinion.ms

Date:          July 6th, 1994

Committee:     Terrence M., Bruce  D.,  Robert  H.,
               Mark  K.,  Yousef  K.,  Joseph
               Kowalski, Bill Shannon, Glenn  Skinner,  Ran-
               gaswamy V.

1.  Summary

This project proposes to port the Solaris  commands  to  the
PowerPC.

2.  Decision & Precedence Information

The proposal is  approved  conditional  upon  submission  of
documentation of addittions made to sys/isa_defs.h..

The deliverables may be included in a minor release.

This project depends on completion of:

     1993/685

3.  Opinion

The basic proposal to make the commands work on the  PowerPC
with  the minimum changes in behavior was accepted with lit-
tle discusion.  The committee was not concerned with details
of disassembly format(s) (an Uncommitted interface).

The committee did request clarification of the proposed need
to  add  alignment  constraint definitions to sys/isa_defs.h
but accepted the team's rationale with the proviso that  any
extensions be documented and become a Public interface.

4.  Minority Opinion(s)

None.

5.  Advisory Information

This project has created a common  package  for  doing  code

psarc/1994/197         Copyright 1994 Sun Microsystems, Inc.

                           - 2 -

disassembly for use by dis and adb (and dbx).  The committee
advises that a project be created to extend this work to our
other ISAs.

6.  Appendices

6.1.  Appendix A: Technical Changes Required

     1.   The project must provide documentation for changes
          to sys/isa_defs.h.

6.2.  Appendix B: Technical Changes Advised

     1.   The team is requested to provide a description  of
          areas  that  required significant changes in order
          to do the port.

6.3.  Appendix C: Reference Material

1.   /shared/sac/PSARC/1994/179/materials/commands.changes

2.   /shared/sac/PSARC/1994/materials/isa_def

psarc/1994/197         Copyright 1994 Sun Microsystems, Inc.