exp/1926: Info registers command produces no output for "standard register names"

[fnf at specifixinc dot com]

>Number:         1926
>Category:       exp
>Synopsis:       Info registers command produces no output for "standard register names"
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          patch
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 25 14:38:01 UTC 2005
>Closed-Date:
>Last-Modified:
>Originator:     fnf@specifixinc.com
>Release:        head of development tree
>Organization:
>Environment:
i686-pc-linux-gnu for example, but affects all
>Description:
The "info register sp" command prints no output of any kind,
not even a message that this is not supported.  Same thing for the other "user registers" (fp, pc, ps).
>How-To-Repeat:
Run any executable to a breakpoint and try "info register sp".

(gdb) br main
Breakpoint 1 at 0x8048350: file t.c, line 3.
(gdb) run
Starting program: /links/build/sourceware/gdb/i686-pc-linux-gnu/gdb/t

Breakpoint 1, main () at t.c:3
3       }
(gdb) info register sp
(gdb) info register esp
esp            0xbffff5d0       0xbffff5d0
(gdb)
>Fix:
The attached patch fixes the problem, but may or may not be the best way to deal with the issue.  Perhaps gdb should simply say that info registers only supports printing using the canonical mnemonics for registers (to use the terms in the gdb documentation).
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
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