libffi/testsuite/libffi.call/cls_uint.c

   1 /* Area:        closure_call
   2    Purpose:     Check return value uint.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <andreast@gcc.gnu.org> 20030828  */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 static void cls_ret_uint_fn(ffi_cif* cif,void* resp,void** args,
  11                              void* userdata)
  12  {
  13    *(unsigned int*)resp = *(unsigned int *)args[0];
  14
  15    printf("%d: %d\n",*(unsigned int *)args[0],
  16           *(unsigned int *)resp);
  17  }
  18 typedef unsigned int (*cls_ret_uint)(unsigned int);
  19
  20 int main (void)
  21 {
  22   ffi_cif cif;
  23   static ffi_closure cl;
  24   ffi_closure *pcl = &cl;
  25   ffi_type * cl_arg_types[2];
  26
  27
  28   cl_arg_types[0] = &ffi_type_uint32;
  29   cl_arg_types[1] = NULL;
  30
  31   /* Initialize the cif */
  32   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  33                      &ffi_type_uint32, cl_arg_types) == FFI_OK);
  34
  35   CHECK(ffi_prep_closure(pcl, &cif, cls_ret_uint_fn, NULL)  == FFI_OK);
  36
  37   (*((cls_ret_uint)pcl))(2147483647);
  38   /* { dg-output "2147483647: 2147483647" } */
  39
  40   exit(0);
  41 }