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From: Juli Mallett <jmallett@FreeBSD.org>
Date: Mon, 22 Apr 2013 13:57:22 -0700
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Subject: Re: kern/177876: [mips] kernel stack overflow panic on mips64,
 EdgeRouter Lite
To: Warner Losh <imp@bsdimp.com>
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Cc: Joe Holden <joe@rewt.org.uk>,
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On Mon, Apr 22, 2013 at 1:42 PM, Warner Losh <imp@bsdimp.com> wrote:
>> If the header gets nuked, we'll find out fast :)  (And I really do
>> think that's the right way forward...)
>
> "the" here is which one of the three different headers that list the registers?

regnum.h, although I guess some other bits may be harder to fix.
Still, the header explicitly mentioned needing to keep in sync with
trapframe; it's a list of offsets into struct trapframe, not a list of
registers.  So it should just go away.  Probably much of the rest of
the header should go away, too; like, why on earth do we need PREG_S0
and friends?