libffi/testsuite/libffi.call/struct3.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   int si;
  13 } test_structure_3;
  14
  15 static test_structure_3 ABI_ATTR struct3(test_structure_3 ts)
  16 {
  17   ts.si = -(ts.si*2);
  18
  19   return ts;
  20 }
  21
  22 int main (void)
  23 {
  24   ffi_cif cif;
  25   ffi_type *args[MAX_ARGS];
  26   void *values[MAX_ARGS];
  27   int compare_value;
  28   ffi_type ts3_type;
  29   ffi_type *ts3_type_elements[2];
  30
  31   test_structure_3 ts3_arg;
  32   test_structure_3 *ts3_result =
  33     (test_structure_3 *) malloc (sizeof(test_structure_3));
  34
  35   ts3_type.size = 0;
  36   ts3_type.alignment = 0;
  37   ts3_type.type = FFI_TYPE_STRUCT;
  38   ts3_type.elements = ts3_type_elements;
  39   ts3_type_elements[0] = &ffi_type_sint;
  40   ts3_type_elements[1] = NULL;
  41
  42   args[0] = &ts3_type;
  43   values[0] = &ts3_arg;
  44
  45   /* Initialize the cif */
  46   CHECK(ffi_prep_cif(&cif, ABI_NUM, 1,
  47                      &ts3_type, args) == FFI_OK);
  48
  49   ts3_arg.si = -123;
  50   compare_value = ts3_arg.si;
  51
  52   ffi_call(&cif, FFI_FN(struct3), ts3_result, values);
  53
  54   printf ("%d %d\n", ts3_result->si, -(compare_value*2));
  55
  56   CHECK(ts3_result->si == -(compare_value*2));
  57
  58   free (ts3_result);
  59   exit(0);
  60 }