armv4-sync-synchronize.c « arm « cpu « score « cpukit - rtems - RTEMS Kernel, file-systems, drivers, BSPs, samples, and testsuite.

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void
__sync_synchronize (void)
{
#ifdef ARM_MULTILIB_HAS_BARRIER_INSTRUCTIONS
  asm volatile("dmb" : : : "memory");
#else
  asm volatile("" : : : "memory");
#endif
}