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/* This test checks that data marked with the "noinit" attribute is handled
correctly.
If data LMA != VMA (e.g. for simulating the copy of data from ROM to RAM),
then var_init will always be re-initialized to 2 and this test will loop
forever, so it must be skipped for those targets. */
#ifdef __cplusplus
extern "C" {
#endif
extern void _start (void) __attribute__ ((noreturn));
#ifdef __cplusplus
}
#endif
int var_common;
int var_zero = 0;
int var_one = 1;
int __attribute__((noinit)) var_noinit;
int var_init = 2;
int
main (void)
{
/* Make sure that the C startup code has correctly initialized the ordinary variables. */
if (var_common != 0)
__builtin_abort ();
/* Initialized variables are not re-initialized during startup, so
check their original values only during the first run of this
test. */
if (var_init == 2)
if (var_zero != 0 || var_one != 1)
__builtin_abort ();
switch (var_init)
{
case 2:
/* First time through - change all the values. */
var_common = var_zero = var_one = var_noinit = var_init = 3;
break;
case 3:
/* Second time through - make sure that var_noinit has not been reset. */
if (var_noinit != 3)
__builtin_abort ();
__builtin_exit (0);
default:
/* Any other value for var_init is an error. */
__builtin_abort ();
}
/* Simulate a processor reset by calling the C startup code. */
_start ();
/* Should never reach here. */
__builtin_abort ();
}
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