dtrace discuss - Mar 2010 - tracing arbitrary instructions in static functions

Is it known that the pid provider allows tracing of arbitrary instructions only
within global functions?  For local (static) functions, it seems to only define
entry and return probes.  Is there any work around?

Thanks,
Bob
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Hi Bob,

The pid provider can trace arbitrary instructions in any function that appears
in the symbol table. The only exception is for functions that contain jump
tables -- for those we only expose entry and return probes. Can you send the
dtrace(1M) invocation you''re using and the disassembly of the function
you''re trying to trace?

Adam

On Mar 2, 2010, at 9:41 AM, Robert G. Byrnes wrote:
> Is it known that the pid provider allows tracing of arbitrary instructions
only within global functions?  For local (static) functions, it seems to only
define entry and return probes.  Is there any work around?
> 
> Thanks,
> Bob
> -- 
> This message posted from opensolaris.org
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org

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Adam Leventhal, Fishworks                        http://blogs.sun.com/ahl

> The only exception is for functions that contain jump tables -- for those
we only expose entry and return probes.
Oh, that''s what''s happening.  I wanted to trace instructions
within search_state_machine() in /usr/lib/libsldap.so.1, and that function has a
big switch that definitely uses a jump table.
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