shotgun/external_libs/libffi/testsuite/libffi.call/cls_24byte.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 /* { dg-do run } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_24byte {
  12   double a;
  13   double b;
  14   int c;
  15   float d;
  16 } cls_struct_24byte;
  17
  18 cls_struct_24byte cls_struct_24byte_fn(struct cls_struct_24byte b0,
  19                             struct cls_struct_24byte b1,
  20                             struct cls_struct_24byte b2,
  21                             struct cls_struct_24byte b3)
  22 {
  23   struct cls_struct_24byte result;
  24
  25   result.a = b0.a + b1.a + b2.a + b3.a;
  26   result.b = b0.b + b1.b + b2.b + b3.b;
  27   result.c = b0.c + b1.c + b2.c + b3.c;
  28   result.d = b0.d + b1.d + b2.d + b3.d;
  29
  30   printf("%g %g %d %g %g %g %d %g %g %g %d %g %g %g %d %g: %g %g %d %g\n",
  31          b0.a, b0.b, b0.c, b0.d,
  32          b1.a, b1.b, b1.c, b1.d,
  33          b2.a, b2.b, b2.c, b2.d,
  34          b3.a, b3.b, b3.c, b2.d,
  35          result.a, result.b, result.c, result.d);
  36
  37   return result;
  38 }
  39
  40 static void
  41 cls_struct_24byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  42                      void* userdata __UNUSED__)
  43 {
  44   struct cls_struct_24byte b0, b1, b2, b3;
  45
  46   b0 = *(struct cls_struct_24byte*)(args[0]);
  47   b1 = *(struct cls_struct_24byte*)(args[1]);
  48   b2 = *(struct cls_struct_24byte*)(args[2]);
  49   b3 = *(struct cls_struct_24byte*)(args[3]);
  50
  51   *(cls_struct_24byte*)resp = cls_struct_24byte_fn(b0, b1, b2, b3);
  52 }
  53
  54 int main (void)
  55 {
  56   ffi_cif cif;
  57 #ifndef USING_MMAP
  58   static ffi_closure cl;
  59 #endif
  60   ffi_closure *pcl;
  61   void* args_dbl[5];
  62   ffi_type* cls_struct_fields[5];
  63   ffi_type cls_struct_type;
  64   ffi_type* dbl_arg_types[5];
  65
  66 #ifdef USING_MMAP
  67   pcl = allocate_mmap (sizeof(ffi_closure));
  68 #else
  69   pcl = &cl;
  70 #endif
  71
  72   cls_struct_type.size = 0;
  73   cls_struct_type.alignment = 0;
  74   cls_struct_type.type = FFI_TYPE_STRUCT;
  75   cls_struct_type.elements = cls_struct_fields;
  76
  77   struct cls_struct_24byte e_dbl = { 9.0, 2.0, 6, 5.0 };
  78   struct cls_struct_24byte f_dbl = { 1.0, 2.0, 3, 7.0 };
  79   struct cls_struct_24byte g_dbl = { 4.0, 5.0, 7, 9.0 };
  80   struct cls_struct_24byte h_dbl = { 8.0, 6.0, 1, 4.0 };
  81   struct cls_struct_24byte res_dbl;
  82
  83   cls_struct_fields[0] = &ffi_type_double;
  84   cls_struct_fields[1] = &ffi_type_double;
  85   cls_struct_fields[2] = &ffi_type_sint;
  86   cls_struct_fields[3] = &ffi_type_float;
  87   cls_struct_fields[4] = NULL;
  88
  89   dbl_arg_types[0] = &cls_struct_type;
  90   dbl_arg_types[1] = &cls_struct_type;
  91   dbl_arg_types[2] = &cls_struct_type;
  92   dbl_arg_types[3] = &cls_struct_type;
  93   dbl_arg_types[4] = NULL;
  94
  95   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4, &cls_struct_type,
  96                      dbl_arg_types) == FFI_OK);
  97
  98   args_dbl[0] = &e_dbl;
  99   args_dbl[1] = &f_dbl;
 100   args_dbl[2] = &g_dbl;
 101   args_dbl[3] = &h_dbl;
 102   args_dbl[4] = NULL;
 103
 104   ffi_call(&cif, FFI_FN(cls_struct_24byte_fn), &res_dbl, args_dbl);
 105   /* { dg-output "9 2 6 5 1 2 3 7 4 5 7 9 8 6 1 9: 22 15 17 25" } */
 106   printf("res: %g %g %d %g\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
 107   /* { dg-output "\nres: 22 15 17 25" } */
 108
 109   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_24byte_gn, NULL) == FFI_OK);
 110
 111   res_dbl = ((cls_struct_24byte(*)(cls_struct_24byte,
 112                                    cls_struct_24byte,
 113                                    cls_struct_24byte,
 114                                    cls_struct_24byte))
 115              (pcl))(e_dbl, f_dbl, g_dbl, h_dbl);
 116   /* { dg-output "\n9 2 6 5 1 2 3 7 4 5 7 9 8 6 1 9: 22 15 17 25" } */
 117   printf("res: %g %g %d %g\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
 118   /* { dg-output "\nres: 22 15 17 25" } */
 119
 120   exit(0);
 121 }