[Bug uprobes/10324] x86-64 uprobes gives up on 0xf0 prefix (lock)

[jkenisto at us dot ibm dot com]

------- Additional Comments From jkenisto at us dot ibm dot com  2009-06-24 21:47 -------
(In reply to comment #1)
> From runtime/uprobes2/uprobes_x86.c  0xf0(lock prefix is documented as not
> supported)
> ---------------------------------------------------------------------
>  * others -- Do we need to support these?                                       
...                
>  * f0 - lock prefix 
> ------------------------------------------------------------------------

It's unsupported because I was vaguely uncomfortable about it and have never
tested probing locked instructions.  You could certainly try it out by changing
the f0 bit from 0 to 1 in good_insns_32[] and good_insns_64[].

See PR #5273, "x86 arch_validate_probed_insn(): lighten up?"

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10324

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