shotgun/external_libs/libffi/testsuite/libffi.call/cls_16byte.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_16byte {
  12   int a;
  13   double b;
  14   int c;
  15 } cls_struct_16byte;
  16
  17 cls_struct_16byte cls_struct_16byte_fn(struct cls_struct_16byte b1,
  18                             struct cls_struct_16byte b2)
  19 {
  20   struct cls_struct_16byte result;
  21
  22   result.a = b1.a + b2.a;
  23   result.b = b1.b + b2.b;
  24   result.c = b1.c + b2.c;
  25
  26   printf("%d %g %d %d %g %d: %d %g %d\n", b1.a, b1.b, b1.c, b2.a, b2.b, b2.c,
  27          result.a, result.b, result.c);
  28
  29   return result;
  30 }
  31
  32 static void cls_struct_16byte_gn(ffi_cif* cif __UNUSED__, void* resp,
  33                                  void** args, void* userdata __UNUSED__)
  34 {
  35   struct cls_struct_16byte b1, b2;
  36
  37   b1 = *(struct cls_struct_16byte*)(args[0]);
  38   b2 = *(struct cls_struct_16byte*)(args[1]);
  39
  40   *(cls_struct_16byte*)resp = cls_struct_16byte_fn(b1, b2);
  41 }
  42
  43 int main (void)
  44 {
  45   ffi_cif cif;
  46 #ifndef USING_MMAP
  47   static ffi_closure cl;
  48 #endif
  49   ffi_closure *pcl;
  50   void* args_dbl[5];
  51   ffi_type* cls_struct_fields[4];
  52   ffi_type cls_struct_type;
  53   ffi_type* dbl_arg_types[5];
  54
  55 #ifdef USING_MMAP
  56   pcl = allocate_mmap (sizeof(ffi_closure));
  57 #else
  58   pcl = &cl;
  59 #endif
  60
  61   cls_struct_type.size = 0;
  62   cls_struct_type.alignment = 0;
  63   cls_struct_type.type = FFI_TYPE_STRUCT;
  64   cls_struct_type.elements = cls_struct_fields;
  65
  66   struct cls_struct_16byte h_dbl = { 7, 8.0, 9 };
  67   struct cls_struct_16byte j_dbl = { 1, 9.0, 3 };
  68   struct cls_struct_16byte res_dbl;
  69
  70   cls_struct_fields[0] = &ffi_type_sint;
  71   cls_struct_fields[1] = &ffi_type_double;
  72   cls_struct_fields[2] = &ffi_type_sint;
  73   cls_struct_fields[3] = NULL;
  74
  75   dbl_arg_types[0] = &cls_struct_type;
  76   dbl_arg_types[1] = &cls_struct_type;
  77   dbl_arg_types[2] = NULL;
  78
  79   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  80                      dbl_arg_types) == FFI_OK);
  81
  82   args_dbl[0] = &h_dbl;
  83   args_dbl[1] = &j_dbl;
  84   args_dbl[2] = NULL;
  85
  86   ffi_call(&cif, FFI_FN(cls_struct_16byte_fn), &res_dbl, args_dbl);
  87   /* { dg-output "7 8 9 1 9 3: 8 17 12" } */
  88   printf("res: %d %g %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  89   /* { dg-output "\nres: 8 17 12" } */
  90
  91   res_dbl.a = 0;
  92   res_dbl.b = 0.0;
  93   res_dbl.c = 0;
  94
  95   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_16byte_gn, NULL) == FFI_OK);
  96
  97   res_dbl = ((cls_struct_16byte(*)(cls_struct_16byte, cls_struct_16byte))(pcl))(h_dbl, j_dbl);
  98   /* { dg-output "\n7 8 9 1 9 3: 8 17 12" } */
  99   printf("res: %d %g %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
 100   /* { dg-output "\nres: 8 17 12" } */
 101
 102   exit(0);
 103 }