gdb/683: What should ``info registers $pc'' do?

[ac131313 at redhat dot com]

>Number:         683
>Category:       gdb
>Synopsis:       What should ``info registers $pc'' do?
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 03 13:58:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     ac131313@redhat.com
>Release:        2002-09-03
>Organization:
>Environment:
Any with $pc, $fp or $sp implemented using builtin registers.
(eg i386)
>Description:
Given:
  info registers $pc
  info registers fp
et.al., who should print the value.

For platforms that don't have a $pc, $fp or $sp, the builtin-code picks up the problem and converts them into variables.  That way:
  print $pc
works.

What should happen, though, with the above:
  - refuse to print the value -- the register doesn't exist
  - print the value before it gets to the target code

>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="inpri"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="inpri"