Re: New "info auxv" command and $auxv variable?

Daniel Jacobowitz
2003-11-04T16:55:26Z

On Tue, Nov 04, 2003 at 11:46:00AM -0500, Andrew Cagney wrote:
> Hello,
>
> In implementing a mechanism to query values from the the target's AUXV
> (/proc/$$/auxv) I decided I might as well add a generic command:
>
> (gdb) info auxv
> Entry point 0x1234
> ...
> (gdb)
>
> that listed the contents of the processes auxv table.

This would be useful.

> But why stop there? What about a builtin $auxv variable, a struct, vis:
>
> (gdb) print $auxv
> $1 = { entry = 0x1234, ... }
>
> Oh, and I guess:
>
> (gdb) interpreter mi --info-auxv
> ^ok,result={entry="0x1234",...}
>
> Thoughts?

I don't know if there's enough utility to bother doing this, though...
the only thing likely to be generally useful is the entry point (and
maybe the vsyscall address).

> PS: Can any one point me at an official GNU/Linux or, I guess *BSD,
> distro that supports /proc/$$/auxv? So far I've only got Solaris :-/

There aren't any released distros that do, as far as I know. You'd
have to run a 2.6.0-test9 kernel. Unless RH has backported it to their
2.4 patches?

--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer