libffi/testsuite/libffi.call/cls_5_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_5byte {
  12   unsigned char a;
  13   unsigned char b;
  14   unsigned char c;
  15   unsigned char d;
  16   unsigned char e;
  17 } cls_struct_5byte;
  18
  19 cls_struct_5byte cls_struct_5byte_fn(struct cls_struct_5byte a1,
  20                             struct cls_struct_5byte a2)
  21 {
  22   struct cls_struct_5byte result;
  23
  24   result.a = a1.a + a2.a;
  25   result.b = a1.b + a2.b;
  26   result.c = a1.c + a2.c;
  27   result.d = a1.d + a2.d;
  28   result.e = a1.e + a2.e;
  29
  30   printf("%d %d %d %d %d %d %d %d %d %d: %d %d %d %d %d\n",
  31          a1.a, a1.b, a1.c, a1.d, a1.e,
  32          a2.a, a2.b, a2.c, a2.d, a2.e,
  33          result.a, result.b, result.c, result.d, result.e);
  34
  35   return  result;
  36 }
  37
  38 static void
  39 cls_struct_5byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  40                     void* userdata __UNUSED__)
  41 {
  42
  43   struct cls_struct_5byte a1, a2;
  44
  45   a1 = *(struct cls_struct_5byte*)(args[0]);
  46   a2 = *(struct cls_struct_5byte*)(args[1]);
  47
  48   *(cls_struct_5byte*)resp = cls_struct_5byte_fn(a1, a2);
  49 }
  50
  51 int main (void)
  52 {
  53   ffi_cif cif;
  54   void *code;
  55   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  56   void* args_dbl[5];
  57   ffi_type* cls_struct_fields[6];
  58   ffi_type cls_struct_type;
  59   ffi_type* dbl_arg_types[5];
  60
  61   struct cls_struct_5byte g_dbl = { 127, 120, 1, 3, 4 };
  62   struct cls_struct_5byte f_dbl = { 12, 128, 9, 3, 4 };
  63   struct cls_struct_5byte res_dbl = { 0, 0, 0, 0, 0 };
  64
  65   cls_struct_type.size = 0;
  66   cls_struct_type.alignment = 0;
  67   cls_struct_type.type = FFI_TYPE_STRUCT;
  68   cls_struct_type.elements = cls_struct_fields;
  69
  70   cls_struct_fields[0] = &ffi_type_uchar;
  71   cls_struct_fields[1] = &ffi_type_uchar;
  72   cls_struct_fields[2] = &ffi_type_uchar;
  73   cls_struct_fields[3] = &ffi_type_uchar;
  74   cls_struct_fields[4] = &ffi_type_uchar;
  75   cls_struct_fields[5] = NULL;
  76
  77   dbl_arg_types[0] = &cls_struct_type;
  78   dbl_arg_types[1] = &cls_struct_type;
  79   dbl_arg_types[2] = NULL;
  80
  81   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  82                      dbl_arg_types) == FFI_OK);
  83
  84   args_dbl[0] = &g_dbl;
  85   args_dbl[1] = &f_dbl;
  86   args_dbl[2] = NULL;
  87
  88   ffi_call(&cif, FFI_FN(cls_struct_5byte_fn), &res_dbl, args_dbl);
  89   /* { dg-output "127 120 1 3 4 12 128 9 3 4: 139 248 10 6 8" } */
  90   printf("res: %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
  91          res_dbl.d, res_dbl.e);
  92   /* { dg-output "\nres: 139 248 10 6 8" } */
  93
  94   res_dbl.a = 0;
  95   res_dbl.b = 0;
  96   res_dbl.c = 0;
  97   res_dbl.d = 0;
  98   res_dbl.e = 0;
  99
 100   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_5byte_gn, NULL, code) == FFI_OK);
 101
 102   res_dbl = ((cls_struct_5byte(*)(cls_struct_5byte, cls_struct_5byte))(code))(g_dbl, f_dbl);
 103   /* { dg-output "\n127 120 1 3 4 12 128 9 3 4: 139 248 10 6 8" } */
 104   printf("res: %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
 105          res_dbl.d, res_dbl.e);
 106   /* { dg-output "\nres: 139 248 10 6 8" } */
 107
 108   exit(0);
 109 }