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 __UNUSED__, void* resp, void** args,
  11                             void* userdata __UNUSED__)
  12 {
  13   *(ffi_arg *)resp = *(unsigned int *)args[0];
  14
  15   printf("%d: %d\n",*(unsigned int *)args[0],
  16          (int)*(ffi_arg *)(resp));
  17 }
  18 typedef unsigned int (*cls_ret_uint)(unsigned int);
  19
  20 int main (void)
  21 {
  22   ffi_cif cif;
  23   void *code;
  24   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  25   ffi_type * cl_arg_types[2];
  26   unsigned int res;
  27
  28   cl_arg_types[0] = &ffi_type_uint;
  29   cl_arg_types[1] = NULL;
  30
  31   /* Initialize the cif */
  32   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  33                      &ffi_type_uint, cl_arg_types) == FFI_OK);
  34
  35   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_uint_fn, NULL, code)  == FFI_OK);
  36
  37   res = (*((cls_ret_uint)code))(2147483647);
  38   /* { dg-output "2147483647: 2147483647" } */
  39   printf("res: %d\n",res);
  40   /* { dg-output "\nres: 2147483647" } */
  41
  42   exit(0);
  43 }