Re: [patch] mips-tdep: info registers

Joel Brobecker
2009-02-23T03:00:26Z

> > Surprisingly, this feature is not documented yet. The documentation
> > mentions "info registers regname", but not "info registers regno".
> > Would you mind adding a line or two and sending a (separate) patch
> > to this list? Eli is the documentation guru...
>
> Should this feature even exist? This is a different "$1" than
> anywhere else in GDB you might type that...

I was asking myself this question, but there is explict code in
GDB to handle that case, so I thought that this was deliberate.
On the other hand, I also thought that this was a very cool way
of knowing what register number NUM actually is. For instance,
on x86, register number 3 is (drums...) ebx:

(gdb) info reg $3
ebx 0xb7e84ff4 -1209511948

With x86, the number of registers is fairly limited, but there
are other processors where this isn't the case. The CPU that gave
me the largest number of pimples so far is ia64...

So I found that the above syntax was a cool thing to know about
and worth retaining. But I've been known to debug the debugger to
obtain that information, so I'm not terribly attached to this
syntax. I agree it is a little confusing with our convenience
variables...

--
Joel