Pardon me if I'm being a bit clueless, but I'm currently
groping around in the dark, trying to find out the format
of the jmp_buf as used in setjmp().

I know that it's 13 long-words by looking in the header,
(I'm using NetBSD/i386 1.4), but I'm not sure what goes
in them.

I understand this is machine specific, but is there somewhere
I can look?

Hope someone can help,

Cheers,

Stu
-- 
Pound for pound, the amoeba is the most vicious animal on earth.