libffi/testsuite/libffi.closures/cls_multi_schar.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check passing of multiple signed char values.
   3    Limitations: none.
   4    PR:          PR13221.
   5    Originator:  <hos@tamanegi.org> 20031129  */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 static signed char test_func_fn(signed char a1, signed char a2)
  11 {
  12   signed char result;
  13
  14   result = a1 + a2;
  15
  16   printf("%d %d: %d\n", a1, a2, result);
  17
  18   return result;
  19
  20 }
  21
  22 static void test_func_gn(ffi_cif *cif __UNUSED__, void *rval, void **avals,
  23                          void *data __UNUSED__)
  24 {
  25   signed char a1, a2;
  26
  27   a1 = *(signed char *)avals[0];
  28   a2 = *(signed char *)avals[1];
  29
  30   *(ffi_arg *)rval = test_func_fn(a1, a2);
  31
  32 }
  33
  34 typedef signed char (*test_type)(signed char, signed char);
  35
  36 int main (void)
  37 {
  38   ffi_cif cif;
  39   void *code;
  40   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  41   void * args_dbl[3];
  42   ffi_type * cl_arg_types[3];
  43   ffi_arg res_call;
  44   signed char a, b, res_closure;
  45
  46   a = 2;
  47   b = 125;
  48
  49   args_dbl[0] = &a;
  50   args_dbl[1] = &b;
  51   args_dbl[2] = NULL;
  52
  53   cl_arg_types[0] = &ffi_type_schar;
  54   cl_arg_types[1] = &ffi_type_schar;
  55   cl_arg_types[2] = NULL;
  56
  57   /* Initialize the cif */
  58   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2,
  59                      &ffi_type_schar, cl_arg_types) == FFI_OK);
  60
  61   ffi_call(&cif, FFI_FN(test_func_fn), &res_call, args_dbl);
  62   /* { dg-output "2 125: 127" } */
  63   printf("res: %d\n", (signed char)res_call);
  64   /* { dg-output "\nres: 127" } */
  65
  66   CHECK(ffi_prep_closure_loc(pcl, &cif, test_func_gn, NULL, code)  == FFI_OK);
  67
  68   res_closure = (*((test_type)code))(2, 125);
  69   /* { dg-output "\n2 125: 127" } */
  70   printf("res: %d\n", res_closure);
  71   /* { dg-output "\nres: 127" } */
  72
  73   exit(0);
  74 }