static void test_static_and_dynamic_initialization(void)
{
#if (__SIZEOF_INT__ == 2)
#define UINT_CONSTANT 0xc0feU
#else
#define UINT_CONSTANT 0xc01dc0feU
#endif
static Atomic_Uint static_uint = ATOMIC_INITIALIZER_UINT(UINT_CONSTANT);
static Atomic_Ulong static_ulong = ATOMIC_INITIALIZER_ULONG(0xdeadbeefUL);
static Atomic_Uintptr static_uintptr =
ATOMIC_INITIALIZER_UINTPTR((uintptr_t) &static_uintptr);
static Atomic_Flag static_flag = ATOMIC_INITIALIZER_FLAG;
Atomic_Uint stack_uint;
Atomic_Ulong stack_ulong;
Atomic_Uintptr stack_uintptr;
Atomic_Flag stack_flag;
puts("=== static and dynamic initialization test case ===");
_Atomic_Init_uint(&stack_uint, UINT_CONSTANT);
_Atomic_Init_ulong(&stack_ulong, 0xdeadbeefUL);
_Atomic_Init_uintptr(&stack_uintptr, (uintptr_t) &static_uintptr);
_Atomic_Flag_clear(&stack_flag, ATOMIC_ORDER_RELAXED);
rtems_test_assert(
memcmp(&stack_uint, &static_uint, sizeof(stack_uint)) == 0
);
rtems_test_assert(
memcmp(&stack_ulong, &static_ulong, sizeof(stack_ulong)) == 0
);
rtems_test_assert(
memcmp(&stack_uintptr, &static_uintptr, sizeof(stack_uintptr)) == 0
);
rtems_test_assert(
memcmp(&stack_flag, &static_flag, sizeof(stack_flag)) == 0
);
rtems_test_assert(
_Atomic_Load_uint(&stack_uint, ATOMIC_ORDER_RELAXED) == 0xc01dc0feU
);
rtems_test_assert(
_Atomic_Load_ulong(&stack_ulong, ATOMIC_ORDER_RELAXED) == 0xdeadbeefUL
);
rtems_test_assert(
_Atomic_Load_uintptr(&stack_uintptr, ATOMIC_ORDER_RELAXED)
== (uintptr_t) &static_uintptr
);
rtems_test_assert(
!_Atomic_Flag_test_and_set(&stack_flag, ATOMIC_ORDER_RELAXED)
);
}
__uint32_t _Libatomic_Protect_start( void *ptr )
{
ISR_Level isr_level;
(void) ptr;
_ISR_Local_disable( isr_level );
#if defined(RTEMS_SMP)
while (
_Atomic_Flag_test_and_set( &_Libatomic_The_one_lock, ATOMIC_ORDER_SEQ_CST )
) {
/* Next try. Yes, a TAS spin lock implementation is stupid. */
}
#endif
return isr_level;
}
