SDIV / UDIV Question

[Wang, Yalin]

Hi  Will

I have a question about sdiv/ udiv  instructions :
In  armv7 A/R  TRM, it said sdiv/udiv will cause 
Divide by zero as undefined exception or just return zero
(decided by implementation) .

So  in kernel ,  should we need register a undef hook to 
Get this undef exception and send SIGFPE to user space
Process ?  


Thanks 




Yalin.Wang
Software Engineer 
OS Kernel&Graphics
 
Sony Mobile Communications
Tel: +86 10 5966 9819
Phone: 18610323092
Address: No.16 Guangshun South Street, Chaoyang, Beijing, P.R.C.

sonymobile.com
  
 


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