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 } */
   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 __UNUSED__, void* resp, void** args,
  35                     void* userdata __UNUSED__)
  36 {
  37
  38   struct cls_struct_5byte a1, a2;
  39
  40   a1 = *(struct cls_struct_5byte*)(args[0]);
  41   a2 = *(struct cls_struct_5byte*)(args[1]);
  42
  43   *(cls_struct_5byte*)resp = cls_struct_5byte_fn(a1, a2);
  44 }
  45
  46 int main (void)
  47 {
  48   ffi_cif cif;
  49   void *code;
  50   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  51   void* args_dbl[5];
  52   ffi_type* cls_struct_fields[4];
  53   ffi_type cls_struct_type;
  54   ffi_type* dbl_arg_types[5];
  55
  56   cls_struct_type.size = 0;
  57   cls_struct_type.alignment = 0;
  58   cls_struct_type.type = FFI_TYPE_STRUCT;
  59   cls_struct_type.elements = cls_struct_fields;
  60
  61   struct cls_struct_5byte g_dbl = { 127, 120, 1 };
  62   struct cls_struct_5byte f_dbl = { 12, 128, 9 };
  63   struct cls_struct_5byte res_dbl = { 0, 0, 0 };
  64
  65   cls_struct_fields[0] = &ffi_type_ushort;
  66   cls_struct_fields[1] = &ffi_type_ushort;
  67   cls_struct_fields[2] = &ffi_type_uchar;
  68   cls_struct_fields[3] = NULL;
  69
  70   dbl_arg_types[0] = &cls_struct_type;
  71   dbl_arg_types[1] = &cls_struct_type;
  72   dbl_arg_types[2] = NULL;
  73
  74   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  75                      dbl_arg_types) == FFI_OK);
  76
  77   args_dbl[0] = &g_dbl;
  78   args_dbl[1] = &f_dbl;
  79   args_dbl[2] = NULL;
  80
  81   ffi_call(&cif, FFI_FN(cls_struct_5byte_fn), &res_dbl, args_dbl);
  82   /* { dg-output "127 120 1 12 128 9: 139 248 10" } */
  83   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  84   /* { dg-output "\nres: 139 248 10" } */
  85
  86   res_dbl.a = 0;
  87   res_dbl.b = 0;
  88   res_dbl.c = 0;
  89
  90   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_5byte_gn, NULL, code) == FFI_OK);
  91
  92   res_dbl = ((cls_struct_5byte(*)(cls_struct_5byte, cls_struct_5byte))(code))(g_dbl, f_dbl);
  93   /* { dg-output "\n127 120 1 12 128 9: 139 248 10" } */
  94   printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  95   /* { dg-output "\nres: 139 248 10" } */
  96
  97   exit(0);
  98 }