shotgun/external_libs/libffi/testsuite/libffi.call/cls_7byte.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_7byte {
  12   unsigned short a;
  13   unsigned short b;
  14   unsigned char c;
  15   unsigned short d;
  16 } cls_struct_7byte;
  17
  18 cls_struct_7byte cls_struct_7byte_fn(struct cls_struct_7byte a1,
  19                             struct cls_struct_7byte a2)
  20 {
  21   struct cls_struct_7byte result;
  22
  23   result.a = a1.a + a2.a;
  24   result.b = a1.b + a2.b;
  25   result.c = a1.c + a2.c;
  26   result.d = a1.d + a2.d;
  27
  28   printf("%d %d %d %d %d %d %d %d: %d %d %d %d\n", a1.a, a1.b, a1.c, a1.d,
  29          a2.a, a2.b, a2.c, a2.d,
  30          result.a, result.b, result.c, result.d);
  31
  32   return  result;
  33 }
  34
  35 static void
  36 cls_struct_7byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  37                     void* userdata __UNUSED__)
  38 {
  39
  40   struct cls_struct_7byte a1, a2;
  41
  42   a1 = *(struct cls_struct_7byte*)(args[0]);
  43   a2 = *(struct cls_struct_7byte*)(args[1]);
  44
  45   *(cls_struct_7byte*)resp = cls_struct_7byte_fn(a1, a2);
  46 }
  47
  48 int main (void)
  49 {
  50   ffi_cif cif;
  51 #ifndef USING_MMAP
  52   static ffi_closure cl;
  53 #endif
  54   ffi_closure *pcl;
  55   void* args_dbl[5];
  56   ffi_type* cls_struct_fields[5];
  57   ffi_type cls_struct_type;
  58   ffi_type* dbl_arg_types[5];
  59
  60 #ifdef USING_MMAP
  61   pcl = allocate_mmap (sizeof(ffi_closure));
  62 #else
  63   pcl = &cl;
  64 #endif
  65
  66   cls_struct_type.size = 0;
  67   cls_struct_type.alignment = 0;
  68   cls_struct_type.type = FFI_TYPE_STRUCT;
  69   cls_struct_type.elements = cls_struct_fields;
  70
  71   struct cls_struct_7byte g_dbl = { 127, 120, 1, 254 };
  72   struct cls_struct_7byte f_dbl = { 12, 128, 9, 255 };
  73   struct cls_struct_7byte res_dbl;
  74
  75   cls_struct_fields[0] = &ffi_type_ushort;
  76   cls_struct_fields[1] = &ffi_type_ushort;
  77   cls_struct_fields[2] = &ffi_type_uchar;
  78   cls_struct_fields[3] = &ffi_type_ushort;
  79   cls_struct_fields[4] = NULL;
  80
  81   dbl_arg_types[0] = &cls_struct_type;
  82   dbl_arg_types[1] = &cls_struct_type;
  83   dbl_arg_types[2] = NULL;
  84
  85   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  86                      dbl_arg_types) == FFI_OK);
  87
  88   args_dbl[0] = &g_dbl;
  89   args_dbl[1] = &f_dbl;
  90   args_dbl[2] = NULL;
  91
  92   ffi_call(&cif, FFI_FN(cls_struct_7byte_fn), &res_dbl, args_dbl);
  93   /* { dg-output "127 120 1 254 12 128 9 255: 139 248 10 509" } */
  94   printf("res: %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
  95   /* { dg-output "\nres: 139 248 10 509" } */
  96
  97   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_7byte_gn, NULL) == FFI_OK);
  98
  99   res_dbl = ((cls_struct_7byte(*)(cls_struct_7byte, cls_struct_7byte))(pcl))(g_dbl, f_dbl);
 100   /* { dg-output "\n127 120 1 254 12 128 9 255: 139 248 10 509" } */
 101   printf("res: %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
 102   /* { dg-output "\nres: 139 248 10 509" } */
 103
 104   exit(0);
 105 }