libffi/testsuite/libffi.call/struct6.c

   1 /* Area:        ffi_call
   2    Purpose:     Check structures.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  From the original ffitest.c  */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9 typedef struct
  10 {
  11   float f;
  12   double d;
  13 } test_structure_6;
  14
  15 static test_structure_6 struct6 (test_structure_6 ts)
  16 {
  17   ts.f += 1;
  18   ts.d += 1;
  19
  20   return ts;
  21 }
  22
  23 int main (void)
  24 {
  25   ffi_cif cif;
  26   ffi_type *args[MAX_ARGS];
  27   void *values[MAX_ARGS];
  28   ffi_type ts6_type;
  29   ffi_type *ts6_type_elements[3];
  30   ts6_type.size = 0;
  31   ts6_type.alignment = 0;
  32   ts6_type.type = FFI_TYPE_STRUCT;
  33   ts6_type.elements = ts6_type_elements;
  34   ts6_type_elements[0] = &ffi_type_float;
  35   ts6_type_elements[1] = &ffi_type_double;
  36   ts6_type_elements[2] = NULL;
  37
  38
  39   test_structure_6 ts6_arg;
  40
  41   /* This is a hack to get a properly aligned result buffer */
  42   test_structure_6 *ts6_result =
  43     (test_structure_6 *) malloc (sizeof(test_structure_6));
  44
  45   args[0] = &ts6_type;
  46   values[0] = &ts6_arg;
  47
  48   /* Initialize the cif */
  49   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ts6_type, args) == FFI_OK);
  50
  51   ts6_arg.f = 5.55f;
  52   ts6_arg.d = 6.66;
  53
  54   printf ("%g\n", ts6_arg.f);
  55   printf ("%g\n", ts6_arg.d);
  56
  57   ffi_call(&cif, FFI_FN(struct6), ts6_result, values);
  58
  59   CHECK(ts6_result->f == 5.55f + 1);
  60   CHECK(ts6_result->d == 6.66 + 1);
  61
  62   free (ts6_result);
  63   exit(0);
  64 }