libffi/testsuite/libffi.call/struct8.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   float f3;
  14   float f4;
  15 } test_structure_8;
  16
  17 static test_structure_8 struct8 (test_structure_8 ts)
  18 {
  19   ts.f1 += 1;
  20   ts.f2 += 1;
  21   ts.f3 += 1;
  22   ts.f4 += 1;
  23
  24   return ts;
  25 }
  26
  27 int main (void)
  28 {
  29   ffi_cif cif;
  30   ffi_type *args[MAX_ARGS];
  31   void *values[MAX_ARGS];
  32   ffi_type ts8_type;
  33   ffi_type *ts8_type_elements[5];
  34   ts8_type.size = 0;
  35   ts8_type.alignment = 0;
  36   ts8_type.type = FFI_TYPE_STRUCT;
  37   ts8_type.elements = ts8_type_elements;
  38   ts8_type_elements[0] = &ffi_type_float;
  39   ts8_type_elements[1] = &ffi_type_float;
  40   ts8_type_elements[2] = &ffi_type_float;
  41   ts8_type_elements[3] = &ffi_type_float;
  42   ts8_type_elements[4] = NULL;
  43
  44   test_structure_8 ts8_arg;
  45
  46   /* This is a hack to get a properly aligned result buffer */
  47   test_structure_8 *ts8_result =
  48     (test_structure_8 *) malloc (sizeof(test_structure_8));
  49
  50   args[0] = &ts8_type;
  51   values[0] = &ts8_arg;
  52
  53   /* Initialize the cif */
  54   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ts8_type, args) == FFI_OK);
  55
  56   ts8_arg.f1 = 5.55f;
  57   ts8_arg.f2 = 55.5f;
  58   ts8_arg.f3 = -5.55f;
  59   ts8_arg.f4 = -55.5f;
  60
  61   printf ("%g\n", ts8_arg.f1);
  62   printf ("%g\n", ts8_arg.f2);
  63   printf ("%g\n", ts8_arg.f3);
  64   printf ("%g\n", ts8_arg.f4);
  65
  66   ffi_call(&cif, FFI_FN(struct8), ts8_result, values);
  67
  68   printf ("%g\n", ts8_result->f1);
  69   printf ("%g\n", ts8_result->f2);
  70   printf ("%g\n", ts8_result->f3);
  71   printf ("%g\n", ts8_result->f4);
  72
  73   CHECK(ts8_result->f1 == 5.55f + 1);
  74   CHECK(ts8_result->f2 == 55.5f + 1);
  75   CHECK(ts8_result->f3 == -5.55f + 1);
  76   CHECK(ts8_result->f4 == -55.5f + 1);
  77
  78   free (ts8_result);
  79   exit(0);
  80 }