libffi/testsuite/libffi.call/cls_19byte.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_19byte {
  12   double a;
  13   unsigned char b;
  14   unsigned char c;
  15   double d;
  16   unsigned char e;
  17 } cls_struct_19byte;
  18
  19 cls_struct_19byte cls_struct_19byte_fn(struct cls_struct_19byte a1,
  20                             struct cls_struct_19byte a2)
  21 {
  22   struct cls_struct_19byte result;
  23
  24   result.a = a1.a + a2.a;
  25   result.b = a1.b + a2.b;
  26   result.c = a1.c + a2.c;
  27   result.d = a1.d + a2.d;
  28   result.e = a1.e + a2.e;
  29
  30
  31   printf("%g %d %d %g %d %g %d %d %g %d: %g %d %d %g %d\n",
  32          a1.a, a1.b, a1.c, a1.d, a1.e,
  33          a2.a, a2.b, a2.c, a2.d, a2.e,
  34          result.a, result.b, result.c, result.d, result.e);
  35   return result;
  36 }
  37
  38 static void
  39 cls_struct_19byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  40                      void* userdata __UNUSED__)
  41 {
  42   struct cls_struct_19byte a1, a2;
  43
  44   a1 = *(struct cls_struct_19byte*)(args[0]);
  45   a2 = *(struct cls_struct_19byte*)(args[1]);
  46
  47   *(cls_struct_19byte*)resp = cls_struct_19byte_fn(a1, a2);
  48 }
  49
  50 int main (void)
  51 {
  52   ffi_cif cif;
  53   void *code;
  54   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  55   void* args_dbl[3];
  56   ffi_type* cls_struct_fields[6];
  57   ffi_type cls_struct_type;
  58   ffi_type* dbl_arg_types[3];
  59
  60   struct cls_struct_19byte g_dbl = { 1.0, 127, 126, 3.0, 120 };
  61   struct cls_struct_19byte f_dbl = { 4.0, 125, 124, 5.0, 119 };
  62   struct cls_struct_19byte res_dbl;
  63
  64   cls_struct_type.size = 0;
  65   cls_struct_type.alignment = 0;
  66   cls_struct_type.type = FFI_TYPE_STRUCT;
  67   cls_struct_type.elements = cls_struct_fields;
  68
  69   cls_struct_fields[0] = &ffi_type_double;
  70   cls_struct_fields[1] = &ffi_type_uchar;
  71   cls_struct_fields[2] = &ffi_type_uchar;
  72   cls_struct_fields[3] = &ffi_type_double;
  73   cls_struct_fields[4] = &ffi_type_uchar;
  74   cls_struct_fields[5] = NULL;
  75
  76   dbl_arg_types[0] = &cls_struct_type;
  77   dbl_arg_types[1] = &cls_struct_type;
  78   dbl_arg_types[2] = NULL;
  79
  80   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  81                      dbl_arg_types) == FFI_OK);
  82
  83   args_dbl[0] = &g_dbl;
  84   args_dbl[1] = &f_dbl;
  85   args_dbl[2] = NULL;
  86
  87   ffi_call(&cif, FFI_FN(cls_struct_19byte_fn), &res_dbl, args_dbl);
  88   /* { dg-output "1 127 126 3 120 4 125 124 5 119: 5 252 250 8 239" } */
  89   printf("res: %g %d %d %g %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
  90          res_dbl.d, res_dbl.e);
  91   /* { dg-output "\nres: 5 252 250 8 239" } */
  92
  93   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_19byte_gn, NULL, code) == FFI_OK);
  94
  95   res_dbl = ((cls_struct_19byte(*)(cls_struct_19byte, cls_struct_19byte))(code))(g_dbl, f_dbl);
  96   /* { dg-output "\n1 127 126 3 120 4 125 124 5 119: 5 252 250 8 239" } */
  97   printf("res: %g %d %d %g %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
  98          res_dbl.d, res_dbl.e);
  99   /* { dg-output "\nres: 5 252 250 8 239" } */
 100
 101   exit(0);
 102 }