AM2432: Generate divide by 0 fault

My first guess is compiler optimization causes no divide instruction to be used.  Try writing code similar to ...

uint32_t test_div(uint32_t arg1, uint32_t arg2)
{
     return arg1 / arg2;
}

From another file, call it result = test_div(1000, 0);

When I compile that for Cortex-R5, and thumb state, the UDIV instruction is used.  I don't know what that instruction does when divide by 0 is attempted.  Maybe it generates some kind of hardware exception or abort?

Please let me know if this suggestion resolves the problem.

Thanks and regards,

-George

Hello George, 

I ran the same example as you listed above, and  I didn't see any abort or exception is triggered. 

Here is the setting I used, could you please let me know whether you see an exception triggered or not from the example?

Thanks,

Hong 

I don't think it is, which is why C considers it "undefined behaviour", you need to check the operands before division.