shotgun/external_libs/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 #ifndef USING_MMAP
  55   static ffi_closure cl;
  56 #endif
  57   ffi_closure *pcl;
  58   void* args_dbl[5];
  59   ffi_type* cls_struct_fields[6];
  60   ffi_type cls_struct_type;
  61   ffi_type* dbl_arg_types[5];
  62
  63 #ifdef USING_MMAP
  64   pcl = allocate_mmap (sizeof(ffi_closure));
  65 #else
  66   pcl = &cl;
  67 #endif
  68
  69   cls_struct_type.size = 0;
  70   cls_struct_type.alignment = 0;
  71   cls_struct_type.type = FFI_TYPE_STRUCT;
  72   cls_struct_type.elements = cls_struct_fields;
  73
  74   struct cls_struct_5byte g_dbl = { 127, 120, 1, 3, 4 };
  75   struct cls_struct_5byte f_dbl = { 12, 128, 9, 3, 4 };
  76   struct cls_struct_5byte res_dbl = { 0, 0, 0, 0, 0 };
  77
  78   cls_struct_fields[0] = &ffi_type_uchar;
  79   cls_struct_fields[1] = &ffi_type_uchar;
  80   cls_struct_fields[2] = &ffi_type_uchar;
  81   cls_struct_fields[3] = &ffi_type_uchar;
  82   cls_struct_fields[4] = &ffi_type_uchar;
  83   cls_struct_fields[5] = NULL;
  84
  85   dbl_arg_types[0] = &cls_struct_type;
  86   dbl_arg_types[1] = &cls_struct_type;
  87   dbl_arg_types[2] = NULL;
  88
  89   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  90                      dbl_arg_types) == FFI_OK);
  91
  92   args_dbl[0] = &g_dbl;
  93   args_dbl[1] = &f_dbl;
  94   args_dbl[2] = NULL;
  95
  96   ffi_call(&cif, FFI_FN(cls_struct_5byte_fn), &res_dbl, args_dbl);
  97   /* { dg-output "127 120 1 3 4 12 128 9 3 4: 139 248 10 6 8" } */
  98   printf("res: %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
  99          res_dbl.d, res_dbl.e);
 100   /* { dg-output "\nres: 139 248 10 6 8" } */
 101
 102   res_dbl.a = 0;
 103   res_dbl.b = 0;
 104   res_dbl.c = 0;
 105   res_dbl.d = 0;
 106   res_dbl.e = 0;
 107
 108   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_5byte_gn, NULL) == FFI_OK);
 109
 110   res_dbl = ((cls_struct_5byte(*)(cls_struct_5byte, cls_struct_5byte))(pcl))(g_dbl, f_dbl);
 111   /* { dg-output "\n127 120 1 3 4 12 128 9 3 4: 139 248 10 6 8" } */
 112   printf("res: %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
 113          res_dbl.d, res_dbl.e);
 114   /* { dg-output "\nres: 139 248 10 6 8" } */
 115
 116   exit(0);
 117 }