libffi/testsuite/libffi.call/cls_6_1_byte.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> 20050708  */
   7
   8 /* { dg-do run } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_6byte {
  12   unsigned char a;
  13   unsigned char b;
  14   unsigned char c;
  15   unsigned char d;
  16   unsigned char e;
  17   unsigned char f;
  18 } cls_struct_6byte;
  19
  20 cls_struct_6byte cls_struct_6byte_fn(struct cls_struct_6byte a1,
  21                             struct cls_struct_6byte a2)
  22 {
  23   struct cls_struct_6byte result;
  24
  25   result.a = a1.a + a2.a;
  26   result.b = a1.b + a2.b;
  27   result.c = a1.c + a2.c;
  28   result.d = a1.d + a2.d;
  29   result.e = a1.e + a2.e;
  30   result.f = a1.f + a2.f;
  31
  32   printf("%d %d %d %d %d %d %d %d %d %d %d %d: %d %d %d %d %d %d\n",
  33          a1.a, a1.b, a1.c, a1.d, a1.e, a1.f,
  34          a2.a, a2.b, a2.c, a2.d, a2.e, a2.f,
  35          result.a, result.b, result.c, result.d, result.e, result.f);
  36
  37   return  result;
  38 }
  39
  40 static void
  41 cls_struct_6byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  42                     void* userdata __UNUSED__)
  43 {
  44
  45   struct cls_struct_6byte a1, a2;
  46
  47   a1 = *(struct cls_struct_6byte*)(args[0]);
  48   a2 = *(struct cls_struct_6byte*)(args[1]);
  49
  50   *(cls_struct_6byte*)resp = cls_struct_6byte_fn(a1, a2);
  51 }
  52
  53 int main (void)
  54 {
  55   ffi_cif cif;
  56   void *code;
  57   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  58   void* args_dbl[5];
  59   ffi_type* cls_struct_fields[7];
  60   ffi_type cls_struct_type;
  61   ffi_type* dbl_arg_types[5];
  62
  63   cls_struct_type.size = 0;
  64   cls_struct_type.alignment = 0;
  65   cls_struct_type.type = FFI_TYPE_STRUCT;
  66   cls_struct_type.elements = cls_struct_fields;
  67
  68   struct cls_struct_6byte g_dbl = { 127, 120, 1, 3, 4, 5 };
  69   struct cls_struct_6byte f_dbl = { 12, 128, 9, 3, 4, 5 };
  70   struct cls_struct_6byte res_dbl = { 0, 0, 0, 0, 0, 0 };
  71
  72   cls_struct_fields[0] = &ffi_type_uchar;
  73   cls_struct_fields[1] = &ffi_type_uchar;
  74   cls_struct_fields[2] = &ffi_type_uchar;
  75   cls_struct_fields[3] = &ffi_type_uchar;
  76   cls_struct_fields[4] = &ffi_type_uchar;
  77   cls_struct_fields[5] = &ffi_type_uchar;
  78   cls_struct_fields[6] = NULL;
  79
  80   dbl_arg_types[0] = &cls_struct_type;
  81   dbl_arg_types[1] = &cls_struct_type;
  82   dbl_arg_types[2] = NULL;
  83
  84   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  85                      dbl_arg_types) == FFI_OK);
  86
  87   args_dbl[0] = &g_dbl;
  88   args_dbl[1] = &f_dbl;
  89   args_dbl[2] = NULL;
  90
  91   ffi_call(&cif, FFI_FN(cls_struct_6byte_fn), &res_dbl, args_dbl);
  92   /* { dg-output "127 120 1 3 4 5 12 128 9 3 4 5: 139 248 10 6 8 10" } */
  93   printf("res: %d %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
  94          res_dbl.d, res_dbl.e, res_dbl.f);
  95   /* { dg-output "\nres: 139 248 10 6 8 10" } */
  96
  97   res_dbl.a = 0;
  98   res_dbl.b = 0;
  99   res_dbl.c = 0;
 100   res_dbl.d = 0;
 101   res_dbl.e = 0;
 102   res_dbl.f = 0;
 103
 104   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_6byte_gn, NULL, code) == FFI_OK);
 105
 106   res_dbl = ((cls_struct_6byte(*)(cls_struct_6byte, cls_struct_6byte))(code))(g_dbl, f_dbl);
 107   /* { dg-output "\n127 120 1 3 4 5 12 128 9 3 4 5: 139 248 10 6 8 10" } */
 108   printf("res: %d %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
 109          res_dbl.d, res_dbl.e, res_dbl.f);
 110   /* { dg-output "\nres: 139 248 10 6 8 10" } */
 111
 112   exit(0);
 113 }