1/* { dg-do compile } */
2/* { dg-options "-mint-register=3 -msave-acc-in-interrupts" } */
3
4/* Verify that the RX specific function attributes work.  */
5
6void fast_interrupt (void) __attribute__((__fast_interrupt__));
7void interrupt (void) __attribute__((__interrupt__));
8int naked (int) __attribute__((__naked__));
9
10int flag = 0;
11
12/* Fast interrupt handler.  Only uses registers marked as fixed
13   by the -fixed-xxx gcc command line option.  Returns via RTFI.  */
14
15void
16fast_interrupt (void)
17{
18  flag = 1;
19}
20
21/* Interrupt handler.  Must preserve any register it uses, even
22   call clobbered ones.  Returns via RTE.  */
23
24void
25interrupt (void)
26{
27  switch (flag)
28    {
29    case 0:
30      flag = -1;
31      break;
32    case 1:
33    case 2:
34    case 4:
35      flag = flag - 2;
36      break;
37    case 5:
38    case 7:
39    case 6:
40      flag ^= 3;
41      break;
42    default:
43      naked (flag * 2);
44      break;
45    }
46}
47
48/* Naked function.  The programmer must supply the function's
49   prologue and epilogue instructions.  */
50
51int
52naked (int arg)
53{
54  flag = arg;
55}
56
57/* { dg-final { scan-assembler "rtfi" } } */
58/* { dg-final { scan-assembler "rte" } } */
59