1  /* Area:	ffi_call, closure_call
       2     Purpose:	Check structure alignment of long double.
       3     Limitations:	none.
       4     PR:		none.
       5     Originator:	<hos@tamanegi.org> 20031203	 */
       6  
       7  /* { dg-do run } */
       8  
       9  #include "ffitest.h"
      10  
      11  typedef struct cls_struct_align {
      12    unsigned char a;
      13    long double b;
      14    unsigned char c;
      15  } cls_struct_align;
      16  
      17  static cls_struct_align cls_struct_align_fn(struct cls_struct_align a1,
      18  			    struct cls_struct_align a2)
      19  {
      20    struct cls_struct_align 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 %g %d %d %g %d: %d %g %d\n", a1.a, (double)a1.b, a1.c, a2.a, (double)a2.b, a2.c, result.a, (double)result.b, result.c);
      27  
      28    return  result;
      29  }
      30  
      31  static void
      32  cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      33  		    void* userdata __UNUSED__)
      34  {
      35  
      36    struct cls_struct_align a1, a2;
      37  
      38    a1 = *(struct cls_struct_align*)(args[0]);
      39    a2 = *(struct cls_struct_align*)(args[1]);
      40  
      41    *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
      42  }
      43  
      44  int main (void)
      45  {
      46    ffi_cif cif;
      47    void *code;
      48    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
      49    void* args_dbl[5];
      50    ffi_type* cls_struct_fields[4];
      51    ffi_type cls_struct_type;
      52    ffi_type* dbl_arg_types[5];
      53  
      54    struct cls_struct_align g_dbl = { 12, 4951, 127 };
      55    struct cls_struct_align f_dbl = { 1, 9320, 13 };
      56    struct cls_struct_align res_dbl;
      57  
      58    cls_struct_type.size = 0;
      59    cls_struct_type.alignment = 0;
      60    cls_struct_type.type = FFI_TYPE_STRUCT;
      61    cls_struct_type.elements = cls_struct_fields;
      62  
      63    cls_struct_fields[0] = &ffi_type_uchar;
      64    cls_struct_fields[1] = &ffi_type_longdouble;
      65    cls_struct_fields[2] = &ffi_type_uchar;
      66    cls_struct_fields[3] = NULL;
      67  
      68    dbl_arg_types[0] = &cls_struct_type;
      69    dbl_arg_types[1] = &cls_struct_type;
      70    dbl_arg_types[2] = NULL;
      71  
      72    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
      73  		     dbl_arg_types) == FFI_OK);
      74  
      75    args_dbl[0] = &g_dbl;
      76    args_dbl[1] = &f_dbl;
      77    args_dbl[2] = NULL;
      78  
      79    ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
      80    /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
      81    printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c);
      82    /* { dg-output "\nres: 13 14271 140" } */
      83  
      84    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
      85  
      86    res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl);
      87    /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
      88    printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c);
      89    /* { dg-output "\nres: 13 14271 140" } */
      90  
      91    exit(0);
      92  }