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/* enable IRQ+FIQ interrupts */
void arm_enable_interrupts (void)
{
unsigned long temp;
__asm__ __volatile__("mrs %0, cpsr\n"
"bic %0, %0, #0xc0\n"
"msr cpsr_c, %0"
: "=r" (temp)
:
: "memory");
}
/* disable IRQ/FIQ interrupts
* returns true if interrupts had been enabled before we disabled them */
int arm_disable_interrupts(void)
{
unsigned long old,temp;
__asm__ __volatile__("mrs %0, cpsr\n"
"orr %1, %0, #0xc0\n"
"msr cpsr_c, %1"
: "=r" (old), "=r" (temp)
:
: "memory");
return (old & 0x80) == 0;
}
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