libffi/testsuite/libffi.call/cls_7_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_7byte {
  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   unsigned char g;
  19 } cls_struct_7byte;
  20
  21 cls_struct_7byte cls_struct_7byte_fn(struct cls_struct_7byte a1,
  22                             struct cls_struct_7byte a2)
  23 {
  24   struct cls_struct_7byte result;
  25
  26   result.a = a1.a + a2.a;
  27   result.b = a1.b + a2.b;
  28   result.c = a1.c + a2.c;
  29   result.d = a1.d + a2.d;
  30   result.e = a1.e + a2.e;
  31   result.f = a1.f + a2.f;
  32   result.g = a1.g + a2.g;
  33
  34   printf("%d %d %d %d %d %d %d %d %d %d %d %d %d %d: %d %d %d %d %d %d %d\n",
  35          a1.a, a1.b, a1.c, a1.d, a1.e, a1.f, a1.g,
  36          a2.a, a2.b, a2.c, a2.d, a2.e, a2.f, a2.g,
  37          result.a, result.b, result.c, result.d, result.e, result.f, result.g);
  38
  39   return  result;
  40 }
  41
  42 static void
  43 cls_struct_7byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  44                     void* userdata __UNUSED__)
  45 {
  46
  47   struct cls_struct_7byte a1, a2;
  48
  49   a1 = *(struct cls_struct_7byte*)(args[0]);
  50   a2 = *(struct cls_struct_7byte*)(args[1]);
  51
  52   *(cls_struct_7byte*)resp = cls_struct_7byte_fn(a1, a2);
  53 }
  54
  55 int main (void)
  56 {
  57   ffi_cif cif;
  58   void *code;
  59   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  60   void* args_dbl[5];
  61   ffi_type* cls_struct_fields[8];
  62   ffi_type cls_struct_type;
  63   ffi_type* dbl_arg_types[5];
  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   struct cls_struct_7byte g_dbl = { 127, 120, 1, 3, 4, 5, 6 };
  71   struct cls_struct_7byte f_dbl = { 12, 128, 9, 3, 4, 5, 6 };
  72   struct cls_struct_7byte res_dbl = { 0, 0, 0, 0, 0, 0, 0 };
  73
  74   cls_struct_fields[0] = &ffi_type_uchar;
  75   cls_struct_fields[1] = &ffi_type_uchar;
  76   cls_struct_fields[2] = &ffi_type_uchar;
  77   cls_struct_fields[3] = &ffi_type_uchar;
  78   cls_struct_fields[4] = &ffi_type_uchar;
  79   cls_struct_fields[5] = &ffi_type_uchar;
  80   cls_struct_fields[6] = &ffi_type_uchar;
  81   cls_struct_fields[7] = NULL;
  82
  83   dbl_arg_types[0] = &cls_struct_type;
  84   dbl_arg_types[1] = &cls_struct_type;
  85   dbl_arg_types[2] = NULL;
  86
  87   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  88                      dbl_arg_types) == FFI_OK);
  89
  90   args_dbl[0] = &g_dbl;
  91   args_dbl[1] = &f_dbl;
  92   args_dbl[2] = NULL;
  93
  94   ffi_call(&cif, FFI_FN(cls_struct_7byte_fn), &res_dbl, args_dbl);
  95   /* { dg-output "127 120 1 3 4 5 6 12 128 9 3 4 5 6: 139 248 10 6 8 10 12" } */
  96   printf("res: %d %d %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
  97          res_dbl.d, res_dbl.e, res_dbl.f, res_dbl.g);
  98   /* { dg-output "\nres: 139 248 10 6 8 10 12" } */
  99
 100   res_dbl.a = 0;
 101   res_dbl.b = 0;
 102   res_dbl.c = 0;
 103   res_dbl.d = 0;
 104   res_dbl.e = 0;
 105   res_dbl.f = 0;
 106   res_dbl.g = 0;
 107
 108   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_7byte_gn, NULL, code) == FFI_OK);
 109
 110   res_dbl = ((cls_struct_7byte(*)(cls_struct_7byte, cls_struct_7byte))(code))(g_dbl, f_dbl);
 111   /* { dg-output "\n127 120 1 3 4 5 6 12 128 9 3 4 5 6: 139 248 10 6 8 10 12" } */
 112   printf("res: %d %d %d %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c,
 113          res_dbl.d, res_dbl.e, res_dbl.f, res_dbl.g);
 114   /* { dg-output "\nres: 139 248 10 6 8 10 12" } */
 115
 116   exit(0);
 117 }