libffi/testsuite/libffi.call/cls_5byte.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Depending on the ABI. Check overlapping.
   4    Limitations: none.
   5    PR:          none.
   6    Originator:  <andreast@gcc.gnu.org> 20030828  */
   7
   8 /* { dg-do run } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_5byte {
  12   unsigned short a;
  13   unsigned short b;
  14   unsigned char c;
  15 } cls_struct_5byte;
  16
  17 cls_struct_5byte cls_struct_5byte_fn(struct cls_struct_5byte a1,
  18                             struct cls_struct_5byte a2)
  19 {
  20   struct cls_struct_5byte 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 %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c,
  27          a2.a, a2.b, a2.c,
  28          result.a, result.b, result.c);
  29
  30   return  result;
  31 }
  32
  33 static void
  34 cls_struct_5byte_gn(ffi_cif* cif, void* resp, void** args, void* userdata)
  35 {
  36
  37   struct cls_struct_5byte a1, a2;
  38
  39   a1 = *(struct cls_struct_5byte*)(args[0]);
  40   a2 = *(struct cls_struct_5byte*)(args[1]);
  41
  42   *(cls_struct_5byte*)resp = cls_struct_5byte_fn(a1, a2);
  43 }
  44
  45 int main (void)
  46 {
  47   ffi_cif cif;
  48   static ffi_closure cl;
  49   ffi_closure *pcl = &cl;
  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   cls_struct_type.size = 0;
  56   cls_struct_type.alignment = 0;
  57   cls_struct_type.type = FFI_TYPE_STRUCT;
  58   cls_struct_type.elements = cls_struct_fields;
  59
  60   struct cls_struct_5byte g_dbl = { 127, 120, 1 };
  61   struct cls_struct_5byte f_dbl = { 12, 128, 9 };
  62   struct cls_struct_5byte res_dbl;
  63
  64   cls_struct_fields[0] = &ffi_type_ushort;
  65   cls_struct_fields[1] = &ffi_type_ushort;
  66   cls_struct_fields[2] = &ffi_type_uchar;
  67   cls_struct_fields[3] = NULL;
  68
  69   dbl_arg_types[0] = &cls_struct_type;
  70   dbl_arg_types[1] = &cls_struct_type;
  71   dbl_arg_types[2] = NULL;
  72
  73   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  74                      dbl_arg_types) == FFI_OK);
  75
  76   args_dbl[0] = &g_dbl;
  77   args_dbl[1] = &f_dbl;
  78   args_dbl[2] = NULL;
  79
  80   ffi_call(&cif, FFI_FN(cls_struct_5byte_fn), &res_dbl, args_dbl);
  81   /* { dg-output "127 120 1 12 128 9: 139 248 10" } */
  82   CHECK( res_dbl.a == (g_dbl.a + f_dbl.a));
  83   CHECK( res_dbl.b == (g_dbl.b + f_dbl.b));
  84   CHECK( res_dbl.c == (g_dbl.c + f_dbl.c));
  85
  86   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_5byte_gn, NULL) == FFI_OK);
  87
  88   res_dbl = ((cls_struct_5byte(*)(cls_struct_5byte, cls_struct_5byte))(pcl))(g_dbl, f_dbl);
  89   /* { dg-output "\n127 120 1 12 128 9: 139 248 10" } */
  90   CHECK( res_dbl.a == (g_dbl.a + f_dbl.a));
  91   CHECK( res_dbl.b == (g_dbl.b + f_dbl.b));
  92   CHECK( res_dbl.c == (g_dbl.c + f_dbl.c));
  93
  94   exit(0);
  95 }