diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/rx/interrupts.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/rx/interrupts.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/rx/interrupts.c b/gcc/testsuite/gcc.target/rx/interrupts.c new file mode 100644 index 000000000..cdc4903de --- /dev/null +++ b/gcc/testsuite/gcc.target/rx/interrupts.c @@ -0,0 +1,58 @@ +/* { dg-do compile } */ +/* { dg-options "-mint-register=3 -msave-acc-in-interrupts" } */ + +/* Verify that the RX specific function attributes work. */ + +void fast_interrupt (void) __attribute__((__fast_interrupt__)); +void interrupt (void) __attribute__((__interrupt__)); +int naked (int) __attribute__((__naked__)); + +int flag = 0; + +/* Fast interrupt handler. Only uses registers marked as fixed + by the -fixed-xxx gcc command line option. Returns via RTFI. */ + +void +fast_interrupt (void) +{ + flag = 1; +} + +/* Interrupt handler. Must preserve any register it uses, even + call clobbered ones. Returns via RTE. */ + +void +interrupt (void) +{ + switch (flag) + { + case 0: + flag = -1; + break; + case 1: + case 2: + case 4: + flag = flag - 2; + break; + case 5: + case 7: + case 6: + flag ^= 3; + break; + default: + naked (flag * 2); + break; + } +} + +/* Naked function. The programmer must supply the function's + prologue and epilogue instructions. */ + +int +naked (int arg) +{ + flag = arg; +} + +/* { dg-final { scan-assembler "rtfi" } } */ +/* { dg-final { scan-assembler "rte" } } */ |