On 01/28/2014 04:27 AM, Andy Lutomirski wrote:
On 01/26/2014 01:08 AM, Qiaowei Ren wrote:
+1) Providing handlers for bounds faults (#BR).
+
+When MPX is enabled, there are 2 new situations that can generate
+#BR faults. If a bounds overflow occurs then a #BR is generated.
+The fault handler will decode MPX instructions to get violation
+address and set this address into extended struct siginfo.
Can you document exactly where the insn address and pointer value end
up? (If it's in the (IMO hideous) cr2 field in ucontext, this needs to
be documented. If it's somewhere useful in siginfo, that should also be
documented to save people the time it takes to figure it out.)
Ok. I will describe extended siginfo at this documentation.
Thanks,
Qiaowei
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