decoding of multi-byte nops in dtrace

Andriy Gapon avg at FreeBSD.org
Sun Jun 10 17:37:16 UTC 2012


on 10/06/2012 19:38 Andriy Gapon said the following:
> From a quick look at them they all seem to really never return.  Either they are
> noreturn type such panic, or functions that always call the functions of the
> first type, or functions with endless loops in them such as top level functions
> of many system threads.

Not entirely true :-)
random_nehemiah_read() has a via-specific instruction that dtrace doesn't
understand: xstore-rng / 0x0f 0xa7 0xc0.

-- 
Andriy Gapon


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