Home | History | Annotate | Download | only in libffi.call
      1 /* Area:	ffi_call, closure_call
      2    Purpose:	Check structure alignment of long double.
      3    Limitations:	none.
      4    PR:		none.
      5    Originator:	<hos (at) 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 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 #ifndef USING_MMAP
     48   static ffi_closure cl;
     49 #endif
     50   ffi_closure *pcl;
     51   void* args_dbl[5];
     52   ffi_type* cls_struct_fields[4];
     53   ffi_type cls_struct_type;
     54   ffi_type* dbl_arg_types[5];
     55 
     56 #ifdef USING_MMAP
     57   pcl = allocate_mmap (sizeof(ffi_closure));
     58 #else
     59   pcl = &cl;
     60 #endif
     61 
     62   cls_struct_type.size = 0;
     63   cls_struct_type.alignment = 0;
     64   cls_struct_type.type = FFI_TYPE_STRUCT;
     65   cls_struct_type.elements = cls_struct_fields;
     66 
     67   struct cls_struct_align g_dbl = { 12, 4951, 127 };
     68   struct cls_struct_align f_dbl = { 1, 9320, 13 };
     69   struct cls_struct_align res_dbl;
     70 
     71   cls_struct_fields[0] = &ffi_type_uchar;
     72   cls_struct_fields[1] = &ffi_type_longdouble;
     73   cls_struct_fields[2] = &ffi_type_uchar;
     74   cls_struct_fields[3] = NULL;
     75 
     76   dbl_arg_types[0] = &cls_struct_type;
     77   dbl_arg_types[1] = &cls_struct_type;
     78   dbl_arg_types[2] = NULL;
     79 
     80   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
     81 		     dbl_arg_types) == FFI_OK);
     82 
     83   args_dbl[0] = &g_dbl;
     84   args_dbl[1] = &f_dbl;
     85   args_dbl[2] = NULL;
     86 
     87   ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
     88   /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
     89   printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c);
     90   /* { dg-output "\nres: 13 14271 140" } */
     91 
     92   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_align_gn, NULL) == FFI_OK);
     93 
     94   res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(pcl))(g_dbl, f_dbl);
     95   /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
     96   printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c);
     97   /* { dg-output "\nres: 13 14271 140" } */
     98 
     99   exit(0);
    100 }
    101