libffi/testsuite/libffi.call/cls_9byte1.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Depending on the ABI. Darwin/AIX do double-word
   4                 alignment of the struct if the first element is a double.
   5                 Check that it does not here.
   6    Limitations: none.
   7    PR:          none.
   8    Originator:  <andreast@gcc.gnu.org> 20030914  */
   9
  10 /* { dg-do run } */
  11 #include "ffitest.h"
  12
  13 typedef struct cls_struct_9byte {
  14   int a;
  15   double b;
  16 } cls_struct_9byte;
  17
  18 cls_struct_9byte cls_struct_9byte_fn(struct cls_struct_9byte b1,
  19                             struct cls_struct_9byte b2)
  20 {
  21   struct cls_struct_9byte result;
  22
  23   result.a = b1.a + b2.a;
  24   result.b = b1.b + b2.b;
  25
  26   printf("%d %g %d %g: %d %g\n", b1.a, b1.b,  b2.a, b2.b,
  27          result.a, result.b);
  28
  29   return result;
  30 }
  31
  32 static void cls_struct_9byte_gn(ffi_cif* cif __UNUSED__, void* resp,
  33                                 void** args, void* userdata __UNUSED__)
  34 {
  35   struct cls_struct_9byte b1, b2;
  36
  37   b1 = *(struct cls_struct_9byte*)(args[0]);
  38   b2 = *(struct cls_struct_9byte*)(args[1]);
  39
  40   *(cls_struct_9byte*)resp = cls_struct_9byte_fn(b1, b2);
  41 }
  42
  43 int main (void)
  44 {
  45   ffi_cif cif;
  46   void *code;
  47   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  48   void* args_dbl[3];
  49   ffi_type* cls_struct_fields[3];
  50   ffi_type cls_struct_type;
  51   ffi_type* dbl_arg_types[3];
  52
  53   cls_struct_type.size = 0;
  54   cls_struct_type.alignment = 0;
  55   cls_struct_type.type = FFI_TYPE_STRUCT;
  56   cls_struct_type.elements = cls_struct_fields;
  57
  58   struct cls_struct_9byte h_dbl = { 7, 8.0};
  59   struct cls_struct_9byte j_dbl = { 1, 9.0};
  60   struct cls_struct_9byte res_dbl;
  61
  62   cls_struct_fields[0] = &ffi_type_sint;
  63   cls_struct_fields[1] = &ffi_type_double;
  64   cls_struct_fields[2] = 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_9byte_fn), &res_dbl, args_dbl);
  78   /* { dg-output "7 8 1 9: 8 17" } */
  79   printf("res: %d %g\n", res_dbl.a, res_dbl.b);
  80   /* { dg-output "\nres: 8 17" } */
  81
  82   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_9byte_gn, NULL, code) == FFI_OK);
  83
  84   res_dbl = ((cls_struct_9byte(*)(cls_struct_9byte, cls_struct_9byte))(code))(h_dbl, j_dbl);
  85   /* { dg-output "\n7 8 1 9: 8 17" } */
  86   printf("res: %d %g\n", res_dbl.a, res_dbl.b);
  87   /* { dg-output "\nres: 8 17" } */
  88
  89   exit(0);
  90 }