libffi/testsuite/libffi.call/cls_align_longdouble.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure alignment of long double.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <hos@tamanegi.org> 20031203      */
   6
   7 /* { dg-do run } */
   8
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_align {
  12   unsigned char a;
  13   long double b;
  14   unsigned char c;
  15 } cls_struct_align;
  16
  17 cls_struct_align cls_struct_align_fn(struct cls_struct_align a1,
  18                             struct cls_struct_align a2)
  19 {
  20   struct cls_struct_align result;
  21
  22   result.a = a1.a + a2.a;
  23   result.b = a1.b + a2.b;
  24   result.c = a1.c + a2.c;
  25
  26   printf("%d %g %d %d %g %d: %d %g %d\n", a1.a, (double)a1.b, a1.c, a2.a, (double)a2.b, a2.c, result.a, (double)result.b, result.c);
  27
  28   return  result;
  29 }
  30
  31 static void
  32 cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  33                     void* userdata __UNUSED__)
  34 {
  35
  36   struct cls_struct_align a1, a2;
  37
  38   a1 = *(struct cls_struct_align*)(args[0]);
  39   a2 = *(struct cls_struct_align*)(args[1]);
  40
  41   *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
  42 }
  43
  44 int main (void)
  45 {
  46   ffi_cif cif;
  47   void *code;
  48   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  49   void* args_dbl[5];
  50   ffi_type* cls_struct_fields[4];
  51   ffi_type cls_struct_type;
  52   ffi_type* dbl_arg_types[5];
  53
  54   cls_struct_type.size = 0;
  55   cls_struct_type.alignment = 0;
  56   cls_struct_type.type = FFI_TYPE_STRUCT;
  57   cls_struct_type.elements = cls_struct_fields;
  58
  59   struct cls_struct_align g_dbl = { 12, 4951, 127 };
  60   struct cls_struct_align f_dbl = { 1, 9320, 13 };
  61   struct cls_struct_align res_dbl;
  62
  63   cls_struct_fields[0] = &ffi_type_uchar;
  64   cls_struct_fields[1] = &ffi_type_longdouble;
  65   cls_struct_fields[2] = &ffi_type_uchar;
  66   cls_struct_fields[3] = NULL;
  67
  68   dbl_arg_types[0] = &cls_struct_type;
  69   dbl_arg_types[1] = &cls_struct_type;
  70   dbl_arg_types[2] = NULL;
  71
  72   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  73                      dbl_arg_types) == FFI_OK);
  74
  75   args_dbl[0] = &g_dbl;
  76   args_dbl[1] = &f_dbl;
  77   args_dbl[2] = NULL;
  78
  79   ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
  80   /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
  81   printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c);
  82   /* { dg-output "\nres: 13 14271 140" } */
  83
  84   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
  85
  86   res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl);
  87   /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
  88   printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c);
  89   /* { dg-output "\nres: 13 14271 140" } */
  90
  91   exit(0);
  92 }