Re: Intermediate step for new arch for lc040 compatibility

[mlelstv%serpens.de@localhost (Michael van Elst)]

romain%dolbeau.org@localhost (Romain Dolbeau) writes:

>I wonder how many of the "removed" instructions actually appear in the
>NetBSD distribution (the full base system, excluding pkgsrc). I don't
>remember ever seeing a numerical code actually using things like
>hyperbolic trigonometry, and even regular trigonometry is not that
>common compared to square roots, divisions and
>exponentials/logarithms.

The traps are counted, e.g. on a 68060 I see:

interrupt                                     total     rate
clock                                    2922532092      100
60intemu                                 3131684125      107
60fpiemu                                  251524913        8
60fpdemu                                     398864        0
60fpeaemu                                         0        0

intemu -> trap 61 unimplemented integer exception
fpiemu -> trap 11 unimplemented f-line exception
fpdemu -> trap 55 floating-point unsupported daa type exception
fpeaemu -> trap 60 unimplemented effective address exception

That machine also runs pkgsrc programs and most things are compiled
for 68020-60 (i.e. avoid unimplemented instructions).