libffi/testsuite/libffi.call/cls_3byte2.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Especially with small structures which may fit in one
   4                 register. Depending on the ABI. Check overlapping.
   5    Limitations: none.
   6    PR:          none.
   7    Originator:  <andreast@gcc.gnu.org> 20030828  */
   8
   9 /* { dg-do run { xfail mips*-*-* arm*-*-* strongarm*-*-* xscale*-*-* } } */
  10 #include "ffitest.h"
  11
  12 typedef struct cls_struct_3byte_1 {
  13   unsigned char a;
  14   unsigned short b;
  15 } cls_struct_3byte_1;
  16
  17 cls_struct_3byte_1 cls_struct_3byte_fn1(struct cls_struct_3byte_1 a1,
  18                             struct cls_struct_3byte_1 a2)
  19 {
  20   struct cls_struct_3byte_1 result;
  21
  22   result.a = a1.a + a2.a;
  23   result.b = a1.b + a2.b;
  24
  25   printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
  26
  27   return  result;
  28 }
  29
  30 static void
  31 cls_struct_3byte_gn1(ffi_cif* cif, void* resp, void** args, void* userdata)
  32 {
  33
  34   struct cls_struct_3byte_1 a1, a2;
  35
  36   a1 = *(struct cls_struct_3byte_1*)(args[0]);
  37   a2 = *(struct cls_struct_3byte_1*)(args[1]);
  38
  39   *(cls_struct_3byte_1*)resp = cls_struct_3byte_fn1(a1, a2);
  40 }
  41
  42 int main (void)
  43 {
  44   ffi_cif cif;
  45   static ffi_closure cl;
  46   ffi_closure *pcl = &cl;
  47   void* args_dbl[5];
  48   ffi_type* cls_struct_fields[4];
  49   ffi_type cls_struct_type;
  50   ffi_type* dbl_arg_types[5];
  51
  52   cls_struct_type.size = 0;
  53   cls_struct_type.alignment = 0;
  54   cls_struct_type.type = FFI_TYPE_STRUCT;
  55   cls_struct_type.elements = cls_struct_fields;
  56
  57   struct cls_struct_3byte_1 g_dbl = { 15, 125 };
  58   struct cls_struct_3byte_1 f_dbl = { 9, 19 };
  59   struct cls_struct_3byte_1 res_dbl;
  60
  61   cls_struct_fields[0] = &ffi_type_uchar;
  62   cls_struct_fields[1] = &ffi_type_ushort;
  63   cls_struct_fields[2] = NULL;
  64
  65   dbl_arg_types[0] = &cls_struct_type;
  66   dbl_arg_types[1] = &cls_struct_type;
  67   dbl_arg_types[2] = NULL;
  68
  69   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  70                      dbl_arg_types) == FFI_OK);
  71
  72   args_dbl[0] = &g_dbl;
  73   args_dbl[1] = &f_dbl;
  74   args_dbl[2] = NULL;
  75
  76   ffi_call(&cif, FFI_FN(cls_struct_3byte_fn1), &res_dbl, args_dbl);
  77   /* { dg-output "15 125 9 19: 24 144" } */
  78   CHECK( res_dbl.a == (g_dbl.a + f_dbl.a));
  79   CHECK( res_dbl.b == (g_dbl.b + f_dbl.b));
  80
  81   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_3byte_gn1, NULL) == FFI_OK);
  82
  83   res_dbl = ((cls_struct_3byte_1(*)(cls_struct_3byte_1, cls_struct_3byte_1))(pcl))(g_dbl, f_dbl);
  84   /* { dg-output "\n15 125 9 19: 24 144" } */
  85   CHECK( res_dbl.a == (g_dbl.a + f_dbl.a));
  86   CHECK( res_dbl.b == (g_dbl.b + f_dbl.b));
  87
  88   exit(0);
  89 }