libffi/testsuite/libffi.call/cls_20byte1.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Depending on the ABI. Check overlapping.
   4    Limitations: none.
   5    PR:          none.
   6    Originator:  <andreast@gcc.gnu.org> 20030828  */
   7
   8
   9
  10 /* { dg-do run } */
  11 #include "ffitest.h"
  12
  13 typedef struct cls_struct_20byte {
  14   int a;
  15   double b;
  16   double c;
  17 } cls_struct_20byte;
  18
  19 cls_struct_20byte cls_struct_20byte_fn(struct cls_struct_20byte a1,
  20                             struct cls_struct_20byte a2)
  21 {
  22   struct cls_struct_20byte result;
  23
  24   result.a = a1.a + a2.a;
  25   result.b = a1.b + a2.b;
  26   result.c = a1.c + a2.c;
  27
  28   printf("%d %g %g %d %g %g: %d %g %g\n", a1.a, a1.b, a1.c, a2.a, a2.b, a2.c,
  29          result.a, result.b, result.c);
  30   return result;
  31 }
  32
  33 static void
  34 cls_struct_20byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  35                      void* userdata __UNUSED__)
  36 {
  37   struct cls_struct_20byte a1, a2;
  38
  39   a1 = *(struct cls_struct_20byte*)(args[0]);
  40   a2 = *(struct cls_struct_20byte*)(args[1]);
  41
  42   *(cls_struct_20byte*)resp = cls_struct_20byte_fn(a1, a2);
  43 }
  44
  45 int main (void)
  46 {
  47   ffi_cif cif;
  48   void *code;
  49   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  50   void* args_dbl[3];
  51   ffi_type* cls_struct_fields[4];
  52   ffi_type cls_struct_type;
  53   ffi_type* dbl_arg_types[3];
  54
  55   struct cls_struct_20byte g_dbl = { 1, 2.0, 3.0 };
  56   struct cls_struct_20byte f_dbl = { 4, 5.0, 7.0 };
  57   struct cls_struct_20byte res_dbl;
  58
  59   cls_struct_type.size = 0;
  60   cls_struct_type.alignment = 0;
  61   cls_struct_type.type = FFI_TYPE_STRUCT;
  62   cls_struct_type.elements = cls_struct_fields;
  63
  64   cls_struct_fields[0] = &ffi_type_sint;
  65   cls_struct_fields[1] = &ffi_type_double;
  66   cls_struct_fields[2] = &ffi_type_double;
  67   cls_struct_fields[3] = NULL;
  68
  69   dbl_arg_types[0] = &cls_struct_type;
  70   dbl_arg_types[1] = &cls_struct_type;
  71   dbl_arg_types[2] = NULL;
  72
  73   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  74                      dbl_arg_types) == FFI_OK);
  75
  76   args_dbl[0] = &g_dbl;
  77   args_dbl[1] = &f_dbl;
  78   args_dbl[2] = NULL;
  79
  80   ffi_call(&cif, FFI_FN(cls_struct_20byte_fn), &res_dbl, args_dbl);
  81   /* { dg-output "1 2 3 4 5 7: 5 7 10" } */
  82   printf("res: %d %g %g\n", res_dbl.a, res_dbl.b, res_dbl.c);
  83   /* { dg-output "\nres: 5 7 10" } */
  84
  85   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_20byte_gn, NULL, code) == FFI_OK);
  86
  87   res_dbl = ((cls_struct_20byte(*)(cls_struct_20byte, cls_struct_20byte))(code))(g_dbl, f_dbl);
  88   /* { dg-output "\n1 2 3 4 5 7: 5 7 10" } */
  89   printf("res: %d %g %g\n", res_dbl.a, res_dbl.b, res_dbl.c);
  90   /* { dg-output "\nres: 5 7 10" } */
  91
  92   exit(0);
  93 }