>> Some years back, I added a PT_SYSCALL to ptrace().
> Some months ago, so did Christos.  It's in netbsd-4.

(Heh.  You can see how closely I track modern NetBSD.)  Why is everyone
discussing PT_SYSCALL-based tracing as though it were hypothetical,
then?  Everyone besides me, that is. :)  Is it just that nobody's
bothered to write the tracer?  Y'all're welcome to the one I did if it
helps anything.

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