shotgun/external_libs/libffi/testsuite/libffi.call/cls_4_1byte.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.
   5    Limitations: none.
   6    PR:          none.
   7    Originator:  <andreast@gcc.gnu.org> 20030902  */
   8
   9 /* { dg-do run } */
  10 #include "ffitest.h"
  11
  12 typedef struct cls_struct_4_1byte {
  13   unsigned char a;
  14   unsigned char b;
  15   unsigned char c;
  16   unsigned char d;
  17 } cls_struct_4_1byte;
  18
  19 cls_struct_4_1byte cls_struct_4_1byte_fn(struct cls_struct_4_1byte a1,
  20                             struct cls_struct_4_1byte a2)
  21 {
  22   struct cls_struct_4_1byte 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
  29   printf("%d %d %d %d %d %d %d %d: %d %d %d %d\n", a1.a, a1.b, a1.c, a1.d,
  30          a2.a, a2.b, a2.c, a2.d,
  31          result.a, result.b, result.c, result.d);
  32
  33   return  result;
  34 }
  35
  36 static void
  37 cls_struct_4_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  38                       void* userdata __UNUSED__)
  39 {
  40
  41   struct cls_struct_4_1byte a1, a2;
  42
  43   a1 = *(struct cls_struct_4_1byte*)(args[0]);
  44   a2 = *(struct cls_struct_4_1byte*)(args[1]);
  45
  46   *(cls_struct_4_1byte*)resp = cls_struct_4_1byte_fn(a1, a2);
  47 }
  48
  49 int main (void)
  50 {
  51   ffi_cif cif;
  52 #ifndef USING_MMAP
  53   static ffi_closure cl;
  54 #endif
  55   ffi_closure *pcl;
  56   void* args_dbl[5];
  57   ffi_type* cls_struct_fields[5];
  58   ffi_type cls_struct_type;
  59   ffi_type* dbl_arg_types[5];
  60
  61 #ifdef USING_MMAP
  62   pcl = allocate_mmap (sizeof(ffi_closure));
  63 #else
  64   pcl = &cl;
  65 #endif
  66
  67   cls_struct_type.size = 0;
  68   cls_struct_type.alignment = 0;
  69   cls_struct_type.type = FFI_TYPE_STRUCT;
  70   cls_struct_type.elements = cls_struct_fields;
  71
  72   struct cls_struct_4_1byte g_dbl = { 12, 13, 14, 15 };
  73   struct cls_struct_4_1byte f_dbl = { 178, 179, 180, 181 };
  74   struct cls_struct_4_1byte res_dbl;
  75
  76   cls_struct_fields[0] = &ffi_type_uchar;
  77   cls_struct_fields[1] = &ffi_type_uchar;
  78   cls_struct_fields[2] = &ffi_type_uchar;
  79   cls_struct_fields[3] = &ffi_type_uchar;
  80   cls_struct_fields[4] = NULL;
  81
  82   dbl_arg_types[0] = &cls_struct_type;
  83   dbl_arg_types[1] = &cls_struct_type;
  84   dbl_arg_types[2] = NULL;
  85
  86   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  87                      dbl_arg_types) == FFI_OK);
  88
  89   args_dbl[0] = &g_dbl;
  90   args_dbl[1] = &f_dbl;
  91   args_dbl[2] = NULL;
  92
  93   ffi_call(&cif, FFI_FN(cls_struct_4_1byte_fn), &res_dbl, args_dbl);
  94   /* { dg-output "12 13 14 15 178 179 180 181: 190 192 194 196" } */
  95   printf("res: %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
  96   /* { dg-output "\nres: 190 192 194 196" } */
  97
  98   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_4_1byte_gn, NULL) == FFI_OK);
  99
 100   res_dbl = ((cls_struct_4_1byte(*)(cls_struct_4_1byte, cls_struct_4_1byte))(pcl))(g_dbl, f_dbl);
 101   /* { dg-output "\n12 13 14 15 178 179 180 181: 190 192 194 196" } */
 102   printf("res: %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
 103   /* { dg-output "\nres: 190 192 194 196" } */
 104
 105   exit(0);
 106 }