libffi/testsuite/libffi.call/struct9.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
  10 typedef struct
  11 {
  12   float f;
  13   int i;
  14 } test_structure_9;
  15
  16 static test_structure_9 ABI_ATTR struct9 (test_structure_9 ts)
  17 {
  18   ts.f += 1;
  19   ts.i += 1;
  20
  21   return ts;
  22 }
  23
  24 int main (void)
  25 {
  26   ffi_cif cif;
  27   ffi_type *args[MAX_ARGS];
  28   void *values[MAX_ARGS];
  29   ffi_type ts9_type;
  30   ffi_type *ts9_type_elements[3];
  31
  32   test_structure_9 ts9_arg;
  33
  34   /* This is a hack to get a properly aligned result buffer */
  35   test_structure_9 *ts9_result =
  36     (test_structure_9 *) malloc (sizeof(test_structure_9));
  37
  38   ts9_type.size = 0;
  39   ts9_type.alignment = 0;
  40   ts9_type.type = FFI_TYPE_STRUCT;
  41   ts9_type.elements = ts9_type_elements;
  42   ts9_type_elements[0] = &ffi_type_float;
  43   ts9_type_elements[1] = &ffi_type_sint;
  44   ts9_type_elements[2] = NULL;
  45
  46   args[0] = &ts9_type;
  47   values[0] = &ts9_arg;
  48
  49   /* Initialize the cif */
  50   CHECK(ffi_prep_cif(&cif, ABI_NUM, 1, &ts9_type, args) == FFI_OK);
  51
  52   ts9_arg.f = 5.55f;
  53   ts9_arg.i = 5;
  54
  55   printf ("%g\n", ts9_arg.f);
  56   printf ("%d\n", ts9_arg.i);
  57
  58   ffi_call(&cif, FFI_FN(struct9), ts9_result, values);
  59
  60   printf ("%g\n", ts9_result->f);
  61   printf ("%d\n", ts9_result->i);
  62
  63   CHECK(ts9_result->f == 5.55f + 1);
  64   CHECK(ts9_result->i == 5 + 1);
  65
  66   free (ts9_result);
  67   exit(0);
  68 }