gcc/testsuite/gcc.target/csky/fnargs-1.c

   1 /* { dg-do run } */
   2
   3 /* Check that a structure argument passed partially in registers and
   4    partially on the stack works.  */
   5
   6 #include <stdlib.h>
   7 #include <string.h>
   8
   9 struct s {
  10   unsigned int i;
  11   double d;
  12   char s[16];
  13 };
  14
  15 /* Note specifically that, since there are 4 argument registers, the
  16    value of ss.d is split between the last argument register and the
  17    stack.  */
  18 void
  19 f (struct s *sp, int j, struct s ss, int k)
  20 {
  21   if (sp->i != ss.i
  22       || sp->d != ss.d
  23       || strcmp (sp->s, ss.s))
  24     abort ();
  25   if (j != -k)
  26     abort ();
  27 }
  28
  29 int
  30 main (void)
  31 {
  32   struct s ss;
  33   ss.i = 0xdeadbeef;
  34   ss.d = 2.71828;
  35   strcpy (ss.s, "shazam!");
  36   f (&ss, 42, ss, -42);
  37   return 0;
  38 }