#include <stdatomic.h>
#include <stdint.h>
#include "spinlock.h"
#include "hal/hal.h"

void spinlock_init(SpinLock *sl) {
  atomic_store(&sl->lock, false);
}

void spinlock_acquire(SpinLock *sl) {
  bool unlocked = false;
  while (!atomic_compare_exchange_weak(&sl->lock, &unlocked, true)) {
    unlocked = false;
    SPINLOCK_HINT();
  }
  hal_intr_disable();
}

void spinlock_release(SpinLock *sl) {
  atomic_store(&sl->lock, false);
  hal_intr_enable();
}