EN0-001 Exam Dumps : ARM Accredited Engineer

In which type of storage will the compiler preferentially place frequently accessed variables?

An interrupt handler contains the following instruction sequence at the end. The purpose of these instructions is to clear the interrupt request in the interrupt controller and then safely re-enable interrupts.

STR r0, [r1] ; write to interrupt controller register to clear interrupt request

CPSIE i ; re-enable IRQ interrupts

Which of the following instructions should be placed at position in order to ensure that the interrupt controller sees the write before interrupts are re-enabled?

The disassembly of a program written in C shows calls to the function__aeabi_fadd. Which one of these compiler floating point options could have been used?