github.com/prattmic/llgo-embedded@v0.0.0-20150820070356-41cfecea0e1e/third_party/gofrontend/libffi/testsuite/libffi.call/cls_ulonglong.c (about)

     1  /* Area:	closure_call
     2     Purpose:	Check return value long long.
     3     Limitations:	none.
     4     PR:		none.
     5     Originator:	<andreast@gcc.gnu.org> 20030828	 */
     6  
     7  /* { dg-do run } */
     8  /* { dg-options "-Wno-format" { target alpha*-dec-osf* } } */
     9  #include "ffitest.h"
    10  
    11  static void cls_ret_ulonglong_fn(ffi_cif* cif __UNUSED__, void* resp,
    12  				 void** args, void* userdata __UNUSED__)
    13  {
    14    *(unsigned long long *)resp= 0xfffffffffffffffLL ^ *(unsigned long long *)args[0];
    15  
    16    printf("%" PRIuLL ": %" PRIuLL "\n",*(unsigned long long *)args[0],
    17  	 *(unsigned long long *)(resp));
    18  }
    19  typedef unsigned long long (*cls_ret_ulonglong)(unsigned long long);
    20  
    21  int main (void)
    22  {
    23    ffi_cif cif;
    24    void *code;
    25    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    26    ffi_type * cl_arg_types[2];
    27    unsigned long long res;
    28  
    29    cl_arg_types[0] = &ffi_type_uint64;
    30    cl_arg_types[1] = NULL;
    31  
    32    /* Initialize the cif */
    33    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
    34  		     &ffi_type_uint64, cl_arg_types) == FFI_OK);
    35    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_ulonglong_fn, NULL, code)  == FFI_OK);
    36    res = (*((cls_ret_ulonglong)code))(214LL);
    37    /* { dg-output "214: 1152921504606846761" } */
    38    printf("res: %" PRIdLL "\n", res);
    39    /* { dg-output "\nres: 1152921504606846761" } */
    40  
    41    res = (*((cls_ret_ulonglong)code))(9223372035854775808LL);
    42    /* { dg-output "\n9223372035854775808: 8070450533247928831" } */
    43    printf("res: %" PRIdLL "\n", res);
    44    /* { dg-output "\nres: 8070450533247928831" } */
    45  
    46    exit(0);
    47  }