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  
      10  #include "ffitest.h"
      11  
      12  typedef struct cls_struct_4byte {
      13    unsigned short a;
      14    unsigned short b;
      15  } cls_struct_4byte;
      16  
      17  cls_struct_4byte cls_struct_4byte_fn(struct cls_struct_4byte a1,
      18  			    struct cls_struct_4byte a2)
      19  {
      20    struct cls_struct_4byte result;
      21  
      22    result.a = a1.a + a2.a;
      23    result.b = a1.b + a2.b;
      24  
      25    printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
      26  
      27    return  result;
      28  }
      29  
      30  static void
      31  cls_struct_4byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      32  		    void* userdata __UNUSED__)
      33  {
      34  
      35    struct cls_struct_4byte a1, a2;
      36  
      37    a1 = *(struct cls_struct_4byte*)(args[0]);
      38    a2 = *(struct cls_struct_4byte*)(args[1]);
      39  
      40    *(cls_struct_4byte*)resp = cls_struct_4byte_fn(a1, a2);
      41  }
      42  
      43  int main (void)
      44  {
      45    ffi_cif cif;
      46    void *code;
      47    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
      48    void* args_dbl[5];
      49    ffi_type* cls_struct_fields[4];
      50    ffi_type cls_struct_type;
      51    ffi_type* dbl_arg_types[5];
      52  
      53    struct cls_struct_4byte g_dbl = { 127, 120 };
      54    struct cls_struct_4byte f_dbl = { 12, 128 };
      55    struct cls_struct_4byte res_dbl;
      56  
      57    cls_struct_type.size = 0;
      58    cls_struct_type.alignment = 0;
      59    cls_struct_type.type = FFI_TYPE_STRUCT;
      60    cls_struct_type.elements = cls_struct_fields;
      61  
      62    cls_struct_fields[0] = &ffi_type_ushort;
      63    cls_struct_fields[1] = &ffi_type_ushort;
      64    cls_struct_fields[2] = NULL;
      65  
      66    dbl_arg_types[0] = &cls_struct_type;
      67    dbl_arg_types[1] = &cls_struct_type;
      68    dbl_arg_types[2] = NULL;
      69  
      70    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
      71  		     dbl_arg_types) == FFI_OK);
      72  
      73    args_dbl[0] = &g_dbl;
      74    args_dbl[1] = &f_dbl;
      75    args_dbl[2] = NULL;
      76  
      77    ffi_call(&cif, FFI_FN(cls_struct_4byte_fn), &res_dbl, args_dbl);
      78    /* { dg-output "127 120 12 128: 139 248" } */
      79    printf("res: %d %d\n", res_dbl.a, res_dbl.b);
      80    /* { dg-output "\nres: 139 248" } */
      81  
      82    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_4byte_gn, NULL, code) == FFI_OK);
      83  
      84    res_dbl = ((cls_struct_4byte(*)(cls_struct_4byte, cls_struct_4byte))(code))(g_dbl, f_dbl);
      85    /* { dg-output "\n127 120 12 128: 139 248" } */
      86    printf("res: %d %d\n", res_dbl.a, res_dbl.b);
      87    /* { dg-output "\nres: 139 248" } */
      88  
      89    exit(0);
      90  }