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, void* resp, void** args, void* userdata)
  33 {
  34   struct cls_struct_16byte b1, b2;
  35
  36   b1 = *(struct cls_struct_16byte*)(args[0]);
  37   b2 = *(struct cls_struct_16byte*)(args[1]);
  38
  39   *(cls_struct_16byte*)resp = cls_struct_16byte_fn(b1, b2);
  40 }
  41
  42 int main (void)
  43 {
  44   ffi_cif cif;
  45   static ffi_closure cl;
  46   ffi_closure *pcl = &cl;
  47   void* args_dbl[5];
  48   ffi_type* cls_struct_fields[4];
  49   ffi_type cls_struct_type;
  50   ffi_type* dbl_arg_types[5];
  51
  52   cls_struct_type.size = 0;
  53   cls_struct_type.alignment = 0;
  54   cls_struct_type.type = FFI_TYPE_STRUCT;
  55   cls_struct_type.elements = cls_struct_fields;
  56
  57   struct cls_struct_16byte h_dbl = { 7, 8.0, 9 };
  58   struct cls_struct_16byte j_dbl = { 1, 9.0, 3 };
  59   struct cls_struct_16byte res_dbl;
  60
  61   cls_struct_fields[0] = &ffi_type_uint32;
  62   cls_struct_fields[1] = &ffi_type_double;
  63   cls_struct_fields[2] = &ffi_type_uint32;
  64   cls_struct_fields[3] = NULL;
  65
  66   dbl_arg_types[0] = &cls_struct_type;
  67   dbl_arg_types[1] = &cls_struct_type;
  68   dbl_arg_types[2] = NULL;
  69
  70   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  71                      dbl_arg_types) == FFI_OK);
  72
  73   args_dbl[0] = &h_dbl;
  74   args_dbl[1] = &j_dbl;
  75   args_dbl[2] = NULL;
  76
  77   ffi_call(&cif, FFI_FN(cls_struct_16byte_fn), &res_dbl, args_dbl);
  78   /* { dg-output "7 8 9 1 9 3: 8 17 12" } */
  79   CHECK( res_dbl.a == (h_dbl.a + j_dbl.a));
  80   CHECK( res_dbl.b == (h_dbl.b + j_dbl.b));
  81   CHECK( res_dbl.c == (h_dbl.c + j_dbl.c));
  82
  83   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_16byte_gn, NULL) == FFI_OK);
  84
  85   res_dbl = ((cls_struct_16byte(*)(cls_struct_16byte, cls_struct_16byte))(pcl))(h_dbl, j_dbl);
  86   /* { dg-output "\n7 8 9 1 9 3: 8 17 12" } */
  87   CHECK( res_dbl.a == (h_dbl.a + j_dbl.a));
  88   CHECK( res_dbl.b == (h_dbl.b + j_dbl.b));
  89   CHECK( res_dbl.c == (h_dbl.c + j_dbl.c));
  90
  91   exit(0);
  92 }