libffi/testsuite/libffi.call/cls_align_uint16.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure alignment of uint16.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <hos@tamanegi.org> 20031203      */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 typedef struct cls_struct_align {
  11   unsigned char a;
  12   unsigned short b;
  13   unsigned char c;
  14 } cls_struct_align;
  15
  16 cls_struct_align cls_struct_align_fn(struct cls_struct_align a1,
  17                             struct cls_struct_align a2)
  18 {
  19   struct cls_struct_align result;
  20
  21   result.a = a1.a + a2.a;
  22   result.b = a1.b + a2.b;
  23   result.c = a1.c + a2.c;
  24
  25   printf("%d %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c, a2.a, a2.b, a2.c, result.a, result.b, result.c);
  26
  27   return  result;
  28 }
  29
  30 static void
  31 cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  32                     void* userdata __UNUSED__)
  33 {
  34
  35   struct cls_struct_align a1, a2;
  36
  37   a1 = *(struct cls_struct_align*)(args[0]);
  38   a2 = *(struct cls_struct_align*)(args[1]);
  39
  40   *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
  41 }
  42
  43 int main (void)
  44 {
  45   ffi_cif cif;
  46   void *code;
  47   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  48   void* args_dbl[5];
  49   ffi_type* cls_struct_fields[4];
  50   ffi_type cls_struct_type;
  51   ffi_type* dbl_arg_types[5];
  52
  53   cls_struct_type.size = 0;
  54   cls_struct_type.alignment = 0;
  55   cls_struct_type.type = FFI_TYPE_STRUCT;
  56   cls_struct_type.elements = cls_struct_fields;
  57
  58   struct cls_struct_align g_dbl = { 12, 4951, 127 };
  59   struct cls_struct_align f_dbl = { 1, 9320, 13 };
  60   struct cls_struct_align res_dbl;
  61
  62   cls_struct_fields[0] = &ffi_type_uchar;
  63   cls_struct_fields[1] = &ffi_type_ushort;
  64   cls_struct_fields[2] = &ffi_type_uchar;
  65   cls_struct_fields[3] = NULL;
  66
  67   dbl_arg_types[0] = &cls_struct_type;
  68   dbl_arg_types[1] = &cls_struct_type;
  69   dbl_arg_types[2] = NULL;
  70
  71   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  72                      dbl_arg_types) == FFI_OK);
  73
  74   args_dbl[0] = &g_dbl;
  75   args_dbl[1] = &f_dbl;
  76   args_dbl[2] = NULL;
  77
  78   ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
  79   /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
  80   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  81   /* { dg-output "\nres: 13 14271 140" } */
  82
  83   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
  84
  85   res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl);
  86   /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
  87   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  88   /* { dg-output "\nres: 13 14271 140" } */
  89
  90   exit(0);
  91 }