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      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. Check overlapping.
      5    Limitations:	none.
      6    PR:		none.
      7    Originator:	<andreast (at) gcc.gnu.org> 20030828	 */
      8 
      9 /* { dg-do run } */
     10 #include "ffitest.h"
     11 
     12 typedef struct cls_struct_3byte_1 {
     13   unsigned char a;
     14   unsigned short b;
     15 } cls_struct_3byte_1;
     16 
     17 cls_struct_3byte_1 cls_struct_3byte_fn1(struct cls_struct_3byte_1 a1,
     18 			    struct cls_struct_3byte_1 a2)
     19 {
     20   struct cls_struct_3byte_1 result;
     21 
     22   result.a = a1.a + a2.a;
     23   result.b = a1.b + a2.b;
     24 
     25   printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
     26 
     27   return  result;
     28 }
     29 
     30 static void
     31 cls_struct_3byte_gn1(ffi_cif* cif __UNUSED__, void* resp, void** args,
     32 		     void* userdata __UNUSED__)
     33 {
     34 
     35   struct cls_struct_3byte_1 a1, a2;
     36 
     37   a1 = *(struct cls_struct_3byte_1*)(args[0]);
     38   a2 = *(struct cls_struct_3byte_1*)(args[1]);
     39 
     40   *(cls_struct_3byte_1*)resp = cls_struct_3byte_fn1(a1, a2);
     41 }
     42 
     43 int main (void)
     44 {
     45   ffi_cif cif;
     46 #ifndef USING_MMAP
     47   static ffi_closure cl;
     48 #endif
     49   ffi_closure *pcl;
     50   void* args_dbl[5];
     51   ffi_type* cls_struct_fields[4];
     52   ffi_type cls_struct_type;
     53   ffi_type* dbl_arg_types[5];
     54 
     55 #ifdef USING_MMAP
     56   pcl = allocate_mmap (sizeof(ffi_closure));
     57 #else
     58   pcl = &cl;
     59 #endif
     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   struct cls_struct_3byte_1 g_dbl = { 15, 125 };
     67   struct cls_struct_3byte_1 f_dbl = { 9, 19 };
     68   struct cls_struct_3byte_1 res_dbl;
     69 
     70   cls_struct_fields[0] = &ffi_type_uchar;
     71   cls_struct_fields[1] = &ffi_type_ushort;
     72   cls_struct_fields[2] = 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_3byte_fn1), &res_dbl, args_dbl);
     86   /* { dg-output "15 125 9 19: 24 144" } */
     87   printf("res: %d %d\n", res_dbl.a, res_dbl.b);
     88   /* { dg-output "\nres: 24 144" } */
     89 
     90   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_3byte_gn1, NULL) == FFI_OK);
     91 
     92   res_dbl = ((cls_struct_3byte_1(*)(cls_struct_3byte_1, cls_struct_3byte_1))(pcl))(g_dbl, f_dbl);
     93   /* { dg-output "\n15 125 9 19: 24 144" } */
     94   printf("res: %d %d\n", res_dbl.a, res_dbl.b);
     95   /* { dg-output "\nres: 24 144" } */
     96 
     97   exit(0);
     98 }
     99