libffi/testsuite/libffi.call/cls_align_uint32.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure alignment of uint32.
   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 int 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 #ifndef USING_MMAP
  47   static ffi_closure cl;
  48 #endif
  49   ffi_closure *pcl;
  50   void* args_dbl[5];
  51   ffi_type* cls_struct_fields[4];
  52   ffi_type cls_struct_type;
  53   ffi_type* dbl_arg_types[5];
  54
  55 #ifdef USING_MMAP
  56   pcl = allocate_mmap (sizeof(ffi_closure));
  57 #else
  58   pcl = &cl;
  59 #endif
  60
  61   cls_struct_type.size = 0;
  62   cls_struct_type.alignment = 0;
  63   cls_struct_type.type = FFI_TYPE_STRUCT;
  64   cls_struct_type.elements = cls_struct_fields;
  65
  66   struct cls_struct_align g_dbl = { 12, 4951, 127 };
  67   struct cls_struct_align f_dbl = { 1, 9320, 13 };
  68   struct cls_struct_align res_dbl;
  69
  70   cls_struct_fields[0] = &ffi_type_uchar;
  71   cls_struct_fields[1] = &ffi_type_uint;
  72   cls_struct_fields[2] = &ffi_type_uchar;
  73   cls_struct_fields[3] = NULL;
  74
  75   dbl_arg_types[0] = &cls_struct_type;
  76   dbl_arg_types[1] = &cls_struct_type;
  77   dbl_arg_types[2] = NULL;
  78
  79   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  80                      dbl_arg_types) == FFI_OK);
  81
  82   args_dbl[0] = &g_dbl;
  83   args_dbl[1] = &f_dbl;
  84   args_dbl[2] = NULL;
  85
  86   ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
  87   /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
  88   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  89   /* { dg-output "\nres: 13 14271 140" } */
  90
  91   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_align_gn, NULL) == FFI_OK);
  92
  93   res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(pcl))(g_dbl, f_dbl);
  94   /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
  95   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  96   /* { dg-output "\nres: 13 14271 140" } */
  97
  98   exit(0);
  99 }