libffi/testsuite/libffi.call/cls_uchar_va.c

   1 /* Area:        closure_call
   2    Purpose:     Test anonymous unsigned char argument.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  ARM Ltd. */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 typedef unsigned char T;
  11
  12 static void cls_ret_T_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  13                          void* userdata __UNUSED__)
  14  {
  15    *(ffi_arg *)resp = *(T *)args[0];
  16
  17    printf("%d: %d %d\n", (int)(*(ffi_arg *)resp), *(T *)args[0], *(T *)args[1]);
  18  }
  19
  20 typedef T (*cls_ret_T)(T, ...);
  21
  22 int main (void)
  23 {
  24   ffi_cif cif;
  25   void *code;
  26   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  27   ffi_type * cl_arg_types[3];
  28   T res;
  29
  30   cl_arg_types[0] = &ffi_type_uchar;
  31   cl_arg_types[1] = &ffi_type_uchar;
  32   cl_arg_types[2] = NULL;
  33
  34   /* Initialize the cif */
  35   CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 2,
  36                          &ffi_type_uchar, cl_arg_types) == FFI_OK);
  37
  38   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_T_fn, NULL, code)  == FFI_OK);
  39   res = ((((cls_ret_T)code)(67, 4)));
  40   /* { dg-output "67: 67 4" } */
  41   printf("res: %d\n", res);
  42   /* { dg-output "\nres: 67" } */
  43   exit(0);
  44 }