libffi/testsuite/libffi.call/cls_18byte.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Depending on the ABI. Double alignment check on darwin.
   4    Limitations: none.
   5    PR:          none.
   6    Originator:  <andreast@gcc.gnu.org> 20030915  */
   7
   8 /* { dg-do run } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_18byte {
  12   double a;
  13   unsigned char b;
  14   unsigned char c;
  15   double d;
  16 } cls_struct_18byte;
  17
  18 cls_struct_18byte cls_struct_18byte_fn(struct cls_struct_18byte a1,
  19                             struct cls_struct_18byte a2)
  20 {
  21   struct cls_struct_18byte result;
  22
  23   result.a = a1.a + a2.a;
  24   result.b = a1.b + a2.b;
  25   result.c = a1.c + a2.c;
  26   result.d = a1.d + a2.d;
  27
  28
  29   printf("%g %d %d %g %g %d %d %g: %g %d %d %g\n", a1.a, a1.b, a1.c, a1.d,
  30          a2.a, a2.b, a2.c, a2.d,
  31          result.a, result.b, result.c, result.d);
  32   return result;
  33 }
  34
  35 static void
  36 cls_struct_18byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  37                      void* userdata __UNUSED__)
  38 {
  39   struct cls_struct_18byte a1, a2;
  40
  41   a1 = *(struct cls_struct_18byte*)(args[0]);
  42   a2 = *(struct cls_struct_18byte*)(args[1]);
  43
  44   *(cls_struct_18byte*)resp = cls_struct_18byte_fn(a1, a2);
  45 }
  46
  47 int main (void)
  48 {
  49   ffi_cif cif;
  50   void *code;
  51   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  52   void* args_dbl[3];
  53   ffi_type* cls_struct_fields[5];
  54   ffi_type cls_struct_type;
  55   ffi_type* dbl_arg_types[3];
  56
  57   cls_struct_type.size = 0;
  58   cls_struct_type.alignment = 0;
  59   cls_struct_type.type = FFI_TYPE_STRUCT;
  60   cls_struct_type.elements = cls_struct_fields;
  61
  62   struct cls_struct_18byte g_dbl = { 1.0, 127, 126, 3.0 };
  63   struct cls_struct_18byte f_dbl = { 4.0, 125, 124, 5.0 };
  64   struct cls_struct_18byte res_dbl;
  65
  66   cls_struct_fields[0] = &ffi_type_double;
  67   cls_struct_fields[1] = &ffi_type_uchar;
  68   cls_struct_fields[2] = &ffi_type_uchar;
  69   cls_struct_fields[3] = &ffi_type_double;
  70   cls_struct_fields[4] = NULL;
  71
  72   dbl_arg_types[0] = &cls_struct_type;
  73   dbl_arg_types[1] = &cls_struct_type;
  74   dbl_arg_types[2] = NULL;
  75
  76   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  77                      dbl_arg_types) == FFI_OK);
  78
  79   args_dbl[0] = &g_dbl;
  80   args_dbl[1] = &f_dbl;
  81   args_dbl[2] = NULL;
  82
  83   ffi_call(&cif, FFI_FN(cls_struct_18byte_fn), &res_dbl, args_dbl);
  84   /* { dg-output "1 127 126 3 4 125 124 5: 5 252 250 8" } */
  85   printf("res: %g %d %d %g\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
  86   /* { dg-output "\nres: 5 252 250 8" } */
  87
  88   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_18byte_gn, NULL, code) == FFI_OK);
  89
  90   res_dbl = ((cls_struct_18byte(*)(cls_struct_18byte, cls_struct_18byte))(code))(g_dbl, f_dbl);
  91   /* { dg-output "\n1 127 126 3 4 125 124 5: 5 252 250 8" } */
  92   printf("res: %g %d %d %g\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
  93   /* { dg-output "\nres: 5 252 250 8" } */
  94
  95   exit(0);
  96 }