trunk/libffi/testsuite/libffi.call/cls_12byte.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <andreast@gcc.gnu.org> 20030828  */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 typedef struct cls_struct_12byte {
  11   int a;
  12   int b;
  13   int c;
  14 } cls_struct_12byte;
  15
  16 cls_struct_12byte cls_struct_12byte_fn(struct cls_struct_12byte b1,
  17                             struct cls_struct_12byte b2)
  18 {
  19   struct cls_struct_12byte result;
  20
  21   result.a = b1.a + b2.a;
  22   result.b = b1.b + b2.b;
  23   result.c = b1.c + b2.c;
  24
  25   printf("%d %d %d %d %d %d: %d %d %d\n", b1.a, b1.b, b1.c, b2.a, b2.b, b2.c,
  26          result.a, result.b, result.c);
  27
  28   return result;
  29 }
  30
  31 static void cls_struct_12byte_gn(ffi_cif* cif __UNUSED__, void* resp,
  32                                  void** args , void* userdata __UNUSED__)
  33 {
  34   struct cls_struct_12byte b1, b2;
  35
  36   b1 = *(struct cls_struct_12byte*)(args[0]);
  37   b2 = *(struct cls_struct_12byte*)(args[1]);
  38
  39   *(cls_struct_12byte*)resp = cls_struct_12byte_fn(b1, b2);
  40 }
  41
  42 int main (void)
  43 {
  44   ffi_cif cif;
  45   void *code;
  46   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  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_12byte h_dbl = { 7, 4, 9 };
  58   struct cls_struct_12byte j_dbl = { 1, 5, 3 };
  59   struct cls_struct_12byte res_dbl;
  60
  61   cls_struct_fields[0] = &ffi_type_sint;
  62   cls_struct_fields[1] = &ffi_type_sint;
  63   cls_struct_fields[2] = &ffi_type_sint;
  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_12byte_fn), &res_dbl, args_dbl);
  78   /* { dg-output "7 4 9 1 5 3: 8 9 12" } */
  79   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  80   /* { dg-output "\nres: 8 9 12" } */
  81
  82   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_12byte_gn, NULL, code) == FFI_OK);
  83
  84   res_dbl.a = 0;
  85   res_dbl.b = 0;
  86   res_dbl.c = 0;
  87
  88   res_dbl = ((cls_struct_12byte(*)(cls_struct_12byte, cls_struct_12byte))(code))(h_dbl, j_dbl);
  89   /* { dg-output "\n7 4 9 1 5 3: 8 9 12" } */
  90   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  91   /* { dg-output "\nres: 8 9 12" } */
  92
  93   exit(0);
  94 }