blob: a442141e55ce3dfd4f15653e5b55bf8e8f9fdef5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* This test checks that data marked with the "persistent" 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__((persistent)) var_persistent = 2;
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 || var_persistent != 2)
__builtin_abort ();
switch (var_init)
{
case 2:
/* First time through - change all the values. */
var_common = var_zero = var_one = var_persistent = var_init = 3;
break;
case 3:
/* Second time through - make sure that var_persistent has not been reset. */
if (var_persistent != 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 ();
}
|
