shotgun/external_libs/libffi/testsuite/libffi.call/nested_struct.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Contains structs as parameter of the struct itself.
   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_16byte1 {
  12   double a;
  13   float b;
  14   int c;
  15 } cls_struct_16byte1;
  16
  17 typedef struct cls_struct_16byte2 {
  18   int ii;
  19   double dd;
  20   float ff;
  21 } cls_struct_16byte2;
  22
  23 typedef struct cls_struct_combined {
  24   cls_struct_16byte1 d;
  25   cls_struct_16byte2 e;
  26 } cls_struct_combined;
  27
  28 cls_struct_combined cls_struct_combined_fn(struct cls_struct_16byte1 b0,
  29                             struct cls_struct_16byte2 b1,
  30                             struct cls_struct_combined b2)
  31 {
  32   struct cls_struct_combined result;
  33
  34   result.d.a = b0.a + b1.dd + b2.d.a;
  35   result.d.b = b0.b + b1.ff + b2.d.b;
  36   result.d.c = b0.c + b1.ii + b2.d.c;
  37   result.e.ii = b0.c + b1.ii + b2.e.ii;
  38   result.e.dd = b0.a + b1.dd + b2.e.dd;
  39   result.e.ff = b0.b + b1.ff + b2.e.ff;
  40
  41   printf("%g %g %d %d %g %g %g %g %d %d %g %g: %g %g %d %d %g %g\n",
  42          b0.a, b0.b, b0.c,
  43          b1.ii, b1.dd, b1.ff,
  44          b2.d.a, b2.d.b, b2.d.c,
  45          b2.e.ii, b2.e.dd, b2.e.ff,
  46          result.d.a, result.d.b, result.d.c,
  47          result.e.ii, result.e.dd, result.e.ff);
  48
  49   return result;
  50 }
  51
  52 static void
  53 cls_struct_combined_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  54                        void* userdata __UNUSED__)
  55 {
  56   struct cls_struct_16byte1 b0;
  57   struct cls_struct_16byte2 b1;
  58   struct cls_struct_combined b2;
  59
  60   b0 = *(struct cls_struct_16byte1*)(args[0]);
  61   b1 = *(struct cls_struct_16byte2*)(args[1]);
  62   b2 = *(struct cls_struct_combined*)(args[2]);
  63
  64
  65   *(cls_struct_combined*)resp = cls_struct_combined_fn(b0, b1, b2);
  66 }
  67
  68 int main (void)
  69 {
  70   ffi_cif cif;
  71 #ifndef USING_MMAP
  72   static ffi_closure cl;
  73 #endif
  74   ffi_closure *pcl;
  75   void* args_dbl[5];
  76   ffi_type* cls_struct_fields[5];
  77   ffi_type* cls_struct_fields1[5];
  78   ffi_type* cls_struct_fields2[5];
  79   ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
  80   ffi_type* dbl_arg_types[5];
  81
  82 #ifdef USING_MMAP
  83   pcl = allocate_mmap (sizeof(ffi_closure));
  84 #else
  85   pcl = &cl;
  86 #endif
  87
  88   cls_struct_type.size = 0;
  89   cls_struct_type.alignment = 0;
  90   cls_struct_type.type = FFI_TYPE_STRUCT;
  91   cls_struct_type.elements = cls_struct_fields;
  92
  93   cls_struct_type1.size = 0;
  94   cls_struct_type1.alignment = 0;
  95   cls_struct_type1.type = FFI_TYPE_STRUCT;
  96   cls_struct_type1.elements = cls_struct_fields1;
  97
  98   cls_struct_type2.size = 0;
  99   cls_struct_type2.alignment = 0;
 100   cls_struct_type2.type = FFI_TYPE_STRUCT;
 101   cls_struct_type2.elements = cls_struct_fields2;
 102
 103   struct cls_struct_16byte1 e_dbl = { 9.0, 2.0, 6};
 104   struct cls_struct_16byte2 f_dbl = { 1, 2.0, 3.0};
 105   struct cls_struct_combined g_dbl = {{4.0, 5.0, 6},
 106                                       {3, 1.0, 8.0}};
 107   struct cls_struct_combined res_dbl;
 108
 109   cls_struct_fields[0] = &ffi_type_double;
 110   cls_struct_fields[1] = &ffi_type_float;
 111   cls_struct_fields[2] = &ffi_type_sint;
 112   cls_struct_fields[3] = NULL;
 113
 114   cls_struct_fields1[0] = &ffi_type_sint;
 115   cls_struct_fields1[1] = &ffi_type_double;
 116   cls_struct_fields1[2] = &ffi_type_float;
 117   cls_struct_fields1[3] = NULL;
 118
 119   cls_struct_fields2[0] = &cls_struct_type;
 120   cls_struct_fields2[1] = &cls_struct_type1;
 121   cls_struct_fields2[2] = NULL;
 122
 123
 124   dbl_arg_types[0] = &cls_struct_type;
 125   dbl_arg_types[1] = &cls_struct_type1;
 126   dbl_arg_types[2] = &cls_struct_type2;
 127   dbl_arg_types[3] = NULL;
 128
 129   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type2,
 130                      dbl_arg_types) == FFI_OK);
 131
 132   args_dbl[0] = &e_dbl;
 133   args_dbl[1] = &f_dbl;
 134   args_dbl[2] = &g_dbl;
 135   args_dbl[3] = NULL;
 136
 137   ffi_call(&cif, FFI_FN(cls_struct_combined_fn), &res_dbl, args_dbl);
 138   /* { dg-output "9 2 6 1 2 3 4 5 6 3 1 8: 15 10 13 10 12 13" } */
 139   CHECK( res_dbl.d.a == (e_dbl.a + f_dbl.dd + g_dbl.d.a));
 140   CHECK( res_dbl.d.b == (e_dbl.b + f_dbl.ff + g_dbl.d.b));
 141   CHECK( res_dbl.d.c == (e_dbl.c + f_dbl.ii + g_dbl.d.c));
 142   CHECK( res_dbl.e.ii == (e_dbl.c + f_dbl.ii + g_dbl.e.ii));
 143   CHECK( res_dbl.e.dd == (e_dbl.a + f_dbl.dd + g_dbl.e.dd));
 144   CHECK( res_dbl.e.ff == (e_dbl.b + f_dbl.ff + g_dbl.e.ff));
 145
 146   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_combined_gn, NULL) == FFI_OK);
 147
 148   res_dbl = ((cls_struct_combined(*)(cls_struct_16byte1,
 149                                      cls_struct_16byte2,
 150                                      cls_struct_combined))
 151              (pcl))(e_dbl, f_dbl, g_dbl);
 152   /* { dg-output "\n9 2 6 1 2 3 4 5 6 3 1 8: 15 10 13 10 12 13" } */
 153   CHECK( res_dbl.d.a == (e_dbl.a + f_dbl.dd + g_dbl.d.a));
 154   CHECK( res_dbl.d.b == (e_dbl.b + f_dbl.ff + g_dbl.d.b));
 155   CHECK( res_dbl.d.c == (e_dbl.c + f_dbl.ii + g_dbl.d.c));
 156   CHECK( res_dbl.e.ii == (e_dbl.c + f_dbl.ii + g_dbl.e.ii));
 157   CHECK( res_dbl.e.dd == (e_dbl.a + f_dbl.dd + g_dbl.e.dd));
 158   CHECK( res_dbl.e.ff == (e_dbl.b + f_dbl.ff + g_dbl.e.ff));
 159   exit(0);
 160 }