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_4_1byte {
      13    unsigned char a;
      14    unsigned char b;
      15    unsigned char c;
      16    unsigned char d;
      17  } cls_struct_4_1byte;
      18  
      19  cls_struct_4_1byte cls_struct_4_1byte_fn(struct cls_struct_4_1byte a1,
      20  			    struct cls_struct_4_1byte a2)
      21  {
      22    struct cls_struct_4_1byte result;
      23  
      24    result.a = a1.a + a2.a;
      25    result.b = a1.b + a2.b;
      26    result.c = a1.c + a2.c;
      27    result.d = a1.d + a2.d;
      28  
      29    printf("%d %d %d %d %d %d %d %d: %d %d %d %d\n", a1.a, a1.b, a1.c, a1.d,
      30  	 a2.a, a2.b, a2.c, a2.d,
      31  	 result.a, result.b, result.c, result.d);
      32  
      33    return  result;
      34  }
      35  
      36  static void
      37  cls_struct_4_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      38  		      void* userdata __UNUSED__)
      39  {
      40  
      41    struct cls_struct_4_1byte a1, a2;
      42  
      43    a1 = *(struct cls_struct_4_1byte*)(args[0]);
      44    a2 = *(struct cls_struct_4_1byte*)(args[1]);
      45  
      46    *(cls_struct_4_1byte*)resp = cls_struct_4_1byte_fn(a1, a2);
      47  }
      48  
      49  int main (void)
      50  {
      51    ffi_cif cif;
      52    void *code;
      53    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
      54    void* args_dbl[5];
      55    ffi_type* cls_struct_fields[5];
      56    ffi_type cls_struct_type;
      57    ffi_type* dbl_arg_types[5];
      58  
      59    struct cls_struct_4_1byte g_dbl = { 12, 13, 14, 15 };
      60    struct cls_struct_4_1byte f_dbl = { 178, 179, 180, 181 };
      61    struct cls_struct_4_1byte res_dbl;
      62  
      63    cls_struct_type.size = 0;
      64    cls_struct_type.alignment = 0;
      65    cls_struct_type.type = FFI_TYPE_STRUCT;
      66    cls_struct_type.elements = cls_struct_fields;
      67  
      68    cls_struct_fields[0] = &ffi_type_uchar;
      69    cls_struct_fields[1] = &ffi_type_uchar;
      70    cls_struct_fields[2] = &ffi_type_uchar;
      71    cls_struct_fields[3] = &ffi_type_uchar;
      72    cls_struct_fields[4] = NULL;
      73  
      74    dbl_arg_types[0] = &cls_struct_type;
      75    dbl_arg_types[1] = &cls_struct_type;
      76    dbl_arg_types[2] = NULL;
      77  
      78    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
      79  		     dbl_arg_types) == FFI_OK);
      80  
      81    args_dbl[0] = &g_dbl;
      82    args_dbl[1] = &f_dbl;
      83    args_dbl[2] = NULL;
      84  
      85    ffi_call(&cif, FFI_FN(cls_struct_4_1byte_fn), &res_dbl, args_dbl);
      86    /* { dg-output "12 13 14 15 178 179 180 181: 190 192 194 196" } */
      87    printf("res: %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
      88    /* { dg-output "\nres: 190 192 194 196" } */
      89  
      90    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_4_1byte_gn, NULL, code) == FFI_OK);
      91  
      92    res_dbl = ((cls_struct_4_1byte(*)(cls_struct_4_1byte, cls_struct_4_1byte))(code))(g_dbl, f_dbl);
      93    /* { dg-output "\n12 13 14 15 178 179 180 181: 190 192 194 196" } */
      94    printf("res: %d %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c, res_dbl.d);
      95    /* { dg-output "\nres: 190 192 194 196" } */
      96  
      97    exit(0);
      98  }