gcc/testsuite/gcc.target/i386/interrupt-22.c

   1 /* { dg-do compile { target ia32 } } */
   2 /* { dg-options "-O2 -mgeneral-regs-only -mno-cld -miamcu -maccumulate-outgoing-args" } */
   3
   4 struct interrupt_frame;
   5
   6 void (*callback) (unsigned int id, unsigned int len)
   7   __attribute__((no_caller_saved_registers));
   8 unsigned int remaining;
   9
  10 void
  11 __attribute__((no_caller_saved_registers))
  12 handler(void)
  13 {
  14   while (1) {
  15     if (remaining) {
  16       callback(0, 0);
  17       break;
  18     }
  19   }
  20 }
  21
  22 void
  23 __attribute__((interrupt))
  24 my_isr(struct interrupt_frame *frame)
  25 {
  26   handler();
  27 }
  28
  29 /* { dg-final { scan-assembler-times "\tcld" 1 } } */