libffi/testsuite/libffi.call/cls_5byte.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 { xfail mips*-*-* arm*-*-* strongarm*-*-* xscale*-*-* } } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_5byte {
  12   unsigned short a;
  13   unsigned short b;
  14   unsigned char c;
  15 } cls_struct_5byte;
  16
  17 cls_struct_5byte cls_struct_5byte_fn(struct cls_struct_5byte a1,
  18                             struct cls_struct_5byte a2)
  19 {
  20   struct cls_struct_5byte result;
  21
  22   result.a = a1.a + a2.a;
  23   result.b = a1.b + a2.b;
  24   result.c = a1.c + a2.c;
  25
  26   printf("%d %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c,
  27          a2.a, a2.b, a2.c,
  28          result.a, result.b, result.c);
  29
  30   return  result;
  31 }
  32
  33 static void
  34 cls_struct_5byte_gn(ffi_cif* cif, void* resp, void** args, void* userdata)
  35 {
  36
  37   struct cls_struct_5byte a1, a2;
  38
  39   a1 = *(struct cls_struct_5byte*)(args[0]);
  40   a2 = *(struct cls_struct_5byte*)(args[1]);
  41
  42   *(cls_struct_5byte*)resp = cls_struct_5byte_fn(a1, a2);
  43 }
  44
  45 int main (void)
  46 {
  47   ffi_cif cif;
  48 #ifndef USING_MMAP
  49   static ffi_closure cl;
  50 #endif
  51   ffi_closure *pcl;
  52   void* args_dbl[5];
  53   ffi_type* cls_struct_fields[4];
  54   ffi_type cls_struct_type;
  55   ffi_type* dbl_arg_types[5];
  56
  57 #ifdef USING_MMAP
  58   pcl = allocate_mmap (sizeof(ffi_closure));
  59 #else
  60   pcl = &cl;
  61 #endif
  62
  63   cls_struct_type.size = 0;
  64   cls_struct_type.alignment = 0;
  65   cls_struct_type.type = FFI_TYPE_STRUCT;
  66   cls_struct_type.elements = cls_struct_fields;
  67
  68   struct cls_struct_5byte g_dbl = { 127, 120, 1 };
  69   struct cls_struct_5byte f_dbl = { 12, 128, 9 };
  70   struct cls_struct_5byte res_dbl;
  71
  72   cls_struct_fields[0] = &ffi_type_ushort;
  73   cls_struct_fields[1] = &ffi_type_ushort;
  74   cls_struct_fields[2] = &ffi_type_uchar;
  75   cls_struct_fields[3] = 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 12 128 9: 139 248 10" } */
  90   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  91   /* { dg-output "\nres: 139 248 10" } */
  92
  93   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_5byte_gn, NULL) == FFI_OK);
  94
  95   res_dbl = ((cls_struct_5byte(*)(cls_struct_5byte, cls_struct_5byte))(pcl))(g_dbl, f_dbl);
  96   /* { dg-output "\n127 120 1 12 128 9: 139 248 10" } */
  97   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  98   /* { dg-output "\nres: 139 248 10" } */
  99
 100   exit(0);
 101 }