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Re: Base GDB tracing 32bit applications on amd64 kernel (with 64bit debugger) part 1)



On 22.06.2019 16:38, maya%netbsd.org@localhost wrote:
> The following kernel works with unmodified -current userland.
> NetBSD 7.99.75
> 
> Reverting to the git mirror Dec 1 2018 with this list of commits also
> works.
> 
> 4cab1e757c7197a01b6dc268c0104fa43ab7f0aa
> 5542798943417f4d1bdb61d0a49a9f8c1c37445c
> ef20f297e5f1527c1b54d4b2de8280a6cca21c71
> 80d084c7ddc1104b2bf191ccaa8a5347e71253ef
> 
> We don't need any changes to GDB whatsoever. I didn't even rebuild the
> binary.
> 
> It's a really tricky bisect because every few days changes are made to
> re-break it.
> 

My patch adds i386 to recognized osabi/bfd, but there is trash in
registers. Something gets malformed, might it be related to these
regressions?

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