testsuite/libffi.call/cls_uchar.c

   1 /* Area:        closure_call
   2    Purpose:     Check return value uchar.
   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_uchar_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  11                              void* userdata __UNUSED__)
  12 {
  13   *(ffi_arg*)resp = *(unsigned char *)args[0];
  14   printf("%d: %d\n",*(unsigned char *)args[0],
  15          (int)*(ffi_arg *)(resp));
  16 }
  17 typedef unsigned char (*cls_ret_uchar)(unsigned char);
  18
  19 int main (void)
  20 {
  21   ffi_cif cif;
  22 #ifndef USING_MMAP
  23   static ffi_closure cl;
  24 #endif
  25   ffi_closure *pcl;
  26   ffi_type * cl_arg_types[2];
  27   unsigned char res;
  28
  29 #ifdef USING_MMAP
  30   pcl = allocate_mmap (sizeof(ffi_closure));
  31 #else
  32   pcl = &cl;
  33 #endif
  34
  35   cl_arg_types[0] = &ffi_type_uchar;
  36   cl_arg_types[1] = NULL;
  37
  38   /* Initialize the cif */
  39   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  40                      &ffi_type_uchar, cl_arg_types) == FFI_OK);
  41
  42   CHECK(ffi_prep_closure(pcl, &cif, cls_ret_uchar_fn, NULL)  == FFI_OK);
  43
  44   res = (*((cls_ret_uchar)pcl))(127);
  45   /* { dg-output "127: 127" } */
  46   printf("res: %d\n",res);
  47   /* { dg-output "\nres: 127" } */
  48
  49   exit(0);
  50 }