1  /* Area:	ffi_call, closure_call
       2     Purpose:	Check structure alignment of pointer.
       3     Limitations:	none.
       4     PR:		none.
       5     Originator:	<hos@tamanegi.org> 20031203	 */
       6  
       7  /* { dg-do run } */
       8  #include "ffitest.h"
       9  
      10  typedef struct cls_struct_align {
      11    unsigned char a;
      12    void *b;
      13    unsigned char c;
      14  } cls_struct_align;
      15  
      16  static cls_struct_align cls_struct_align_fn(struct cls_struct_align a1,
      17  			    struct cls_struct_align a2)
      18  {
      19    struct cls_struct_align result;
      20  
      21    result.a = a1.a + a2.a;
      22    result.b = (void *)((uintptr_t)a1.b + (uintptr_t)a2.b);
      23    result.c = a1.c + a2.c;
      24  
      25    printf("%d %" PRIuPTR " %d %d %" PRIuPTR " %d: %d %" PRIuPTR " %d\n", 
      26           a1.a, (uintptr_t)a1.b, a1.c,
      27  	 a2.a, (uintptr_t)a2.b, a2.c,
      28           result.a, (uintptr_t)result.b,
      29  	 result.c);
      30  
      31    return result;
      32  }
      33  
      34  static void
      35  cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      36  		    void* userdata __UNUSED__)
      37  {
      38  
      39    struct cls_struct_align a1, a2;
      40  
      41    a1 = *(struct cls_struct_align*)(args[0]);
      42    a2 = *(struct cls_struct_align*)(args[1]);
      43  
      44    *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
      45  }
      46  
      47  int main (void)
      48  {
      49    ffi_cif cif;
      50    void *code;
      51    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
      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    struct cls_struct_align g_dbl = { 12, (void *)4951, 127 };
      58    struct cls_struct_align f_dbl = { 1, (void *)9320, 13 };
      59    struct cls_struct_align res_dbl;
      60  
      61    cls_struct_type.size = 0;
      62    cls_struct_type.alignment = 0;
      63    cls_struct_type.type = FFI_TYPE_STRUCT;
      64    cls_struct_type.elements = cls_struct_fields;
      65  
      66    cls_struct_fields[0] = &ffi_type_uchar;
      67    cls_struct_fields[1] = &ffi_type_pointer;
      68    cls_struct_fields[2] = &ffi_type_uchar;
      69    cls_struct_fields[3] = NULL;
      70  
      71    dbl_arg_types[0] = &cls_struct_type;
      72    dbl_arg_types[1] = &cls_struct_type;
      73    dbl_arg_types[2] = NULL;
      74  
      75    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
      76  		     dbl_arg_types) == FFI_OK);
      77  
      78    args_dbl[0] = &g_dbl;
      79    args_dbl[1] = &f_dbl;
      80    args_dbl[2] = NULL;
      81  
      82    ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
      83    /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
      84    printf("res: %d %" PRIuPTR " %d\n", res_dbl.a, (uintptr_t)res_dbl.b, res_dbl.c);
      85    /* { dg-output "\nres: 13 14271 140" } */
      86  
      87    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
      88  
      89    res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl);
      90    /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
      91    printf("res: %d %" PRIuPTR " %d\n", res_dbl.a, (uintptr_t)res_dbl.b, res_dbl.c);
      92    /* { dg-output "\nres: 13 14271 140" } */
      93  
      94    exit(0);
      95  }