Course Solutions Uncategorized (Solved) : Code Reentrant Line Would Interrupt Haveto Occur Cause Bug Manifest Please Explain Answer Q32317704 . . . .

(Solved) : Code Reentrant Line Would Interrupt Haveto Occur Cause Bug Manifest Please Explain Answer Q32317704 . . . .

 

9. During a drivers interrupt handling routine, once the interrupt has been acknowledgedit is possible for another interrupt to occur that will invoke the same handler. Drivers that produce correct results in this scenario are called reentrant. Consider the following interrupt handler: or athe 1 char temp void interrupt hardlar(void) char , x2; x1-inb (Ox120); // read from 1/0 port x2 1nb (0x121); // read from 1/0 Port 1 acknovledgeinterrupt O 12 temp=x1; x1-x2 x2-tep printf(Cot and swapped x1-% d x2-%dn. x1, x2); is

A) Why is this code not reentrant? On what line would aninterrupt haveto

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