1  /* Area:	ffi_call, closure_call
       2     Purpose:	Check structure passing with different structure size.
       3  		Especially with small structures which may fit in one
       4  		register. Depending on the ABI.
       5     Limitations:	none.
       6     PR:		none.
       7     Originator:	<andreast@gcc.gnu.org> 20030902	 */
       8  
       9  /* { dg-do run } */
      10  #include "ffitest.h"
      11  
      12  typedef struct cls_struct_3_1byte {
      13    unsigned char a;
      14    unsigned char b;
      15    unsigned char c;
      16  } cls_struct_3_1byte;
      17  
      18  cls_struct_3_1byte cls_struct_3_1byte_fn(struct cls_struct_3_1byte a1,
      19  			    struct cls_struct_3_1byte a2)
      20  {
      21    struct cls_struct_3_1byte result;
      22  
      23    result.a = a1.a + a2.a;
      24    result.b = a1.b + a2.b;
      25    result.c = a1.c + a2.c;
      26  
      27    printf("%d %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c,
      28  	 a2.a, a2.b, a2.c,
      29  	 result.a, result.b, result.c);
      30  
      31    return  result;
      32  }
      33  
      34  static void
      35  cls_struct_3_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      36  		      void* userdata __UNUSED__)
      37  {
      38  
      39    struct cls_struct_3_1byte a1, a2;
      40  
      41    a1 = *(struct cls_struct_3_1byte*)(args[0]);
      42    a2 = *(struct cls_struct_3_1byte*)(args[1]);
      43  
      44    *(cls_struct_3_1byte*)resp = cls_struct_3_1byte_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_3_1byte g_dbl = { 12, 13, 14 };
      58    struct cls_struct_3_1byte f_dbl = { 178, 179, 180 };
      59    struct cls_struct_3_1byte 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_uchar;
      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_3_1byte_fn), &res_dbl, args_dbl);
      83    /* { dg-output "12 13 14 178 179 180: 190 192 194" } */
      84    printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
      85    /* { dg-output "\nres: 190 192 194" } */
      86  
      87    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_3_1byte_gn, NULL, code) == FFI_OK);
      88  
      89    res_dbl = ((cls_struct_3_1byte(*)(cls_struct_3_1byte, cls_struct_3_1byte))(code))(g_dbl, f_dbl);
      90    /* { dg-output "\n12 13 14 178 179 180: 190 192 194" } */
      91    printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
      92    /* { dg-output "\nres: 190 192 194" } */
      93  
      94    exit(0);
      95  }