libffi/testsuite/libffi.call/struct7.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 f1;
  12   float f2;
  13   double d;
  14 } test_structure_7;
  15
  16 static test_structure_7 struct7 (test_structure_7 ts)
  17 {
  18   ts.f1 += 1;
  19   ts.f2 += 1;
  20   ts.d += 1;
  21
  22   return ts;
  23 }
  24
  25 int main (void)
  26 {
  27   ffi_cif cif;
  28   ffi_type *args[MAX_ARGS];
  29   void *values[MAX_ARGS];
  30   ffi_type ts7_type;
  31   ffi_type *ts7_type_elements[4];
  32   ts7_type.size = 0;
  33   ts7_type.alignment = 0;
  34   ts7_type.type = FFI_TYPE_STRUCT;
  35   ts7_type.elements = ts7_type_elements;
  36   ts7_type_elements[0] = &ffi_type_float;
  37   ts7_type_elements[1] = &ffi_type_float;
  38   ts7_type_elements[2] = &ffi_type_double;
  39   ts7_type_elements[3] = NULL;
  40
  41
  42   test_structure_7 ts7_arg;
  43
  44   /* This is a hack to get a properly aligned result buffer */
  45   test_structure_7 *ts7_result =
  46     (test_structure_7 *) malloc (sizeof(test_structure_7));
  47
  48   args[0] = &ts7_type;
  49   values[0] = &ts7_arg;
  50
  51   /* Initialize the cif */
  52   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ts7_type, args) == FFI_OK);
  53
  54   ts7_arg.f1 = 5.55f;
  55   ts7_arg.f2 = 55.5f;
  56   ts7_arg.d = 6.66;
  57
  58   printf ("%g\n", ts7_arg.f1);
  59   printf ("%g\n", ts7_arg.f2);
  60   printf ("%g\n", ts7_arg.d);
  61
  62   ffi_call(&cif, FFI_FN(struct7), ts7_result, values);
  63
  64   printf ("%g\n", ts7_result->f1);
  65   printf ("%g\n", ts7_result->f2);
  66   printf ("%g\n", ts7_result->d);
  67
  68   CHECK(ts7_result->f1 == 5.55f + 1);
  69   CHECK(ts7_result->f2 == 55.5f + 1);
  70   CHECK(ts7_result->d == 6.66 + 1);
  71
  72   free (ts7_result);
  73   exit(0);
  74 }