1/* Area:	ffi_call, closure_call
2   Purpose:	Check structure passing with different structure size.
3		Contains structs as parameter of the struct itself.
4		Sample taken from Alan Modras patch to src/prep_cif.c.
5   Limitations:	none.
6   PR:		none.
7   Originator:	<andreast@gcc.gnu.org> 20051010	 */
8
9/* { dg-do run } */
10#include "ffitest.h"
11
12typedef struct A {
13  long double a;
14  unsigned char b;
15} A;
16
17typedef struct B {
18  struct A x;
19  unsigned char y;
20} B;
21
22static B B_fn(struct A b2, struct B b3)
23{
24  struct B result;
25
26  result.x.a = b2.a + b3.x.a;
27  result.x.b = b2.b + b3.x.b + b3.y;
28  result.y = b2.b + b3.x.b;
29
30  printf("%d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b,
31	 (int)b3.x.a, b3.x.b, b3.y,
32	 (int)result.x.a, result.x.b, result.y);
33
34  return result;
35}
36
37static void
38B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
39     void* userdata __UNUSED__)
40{
41  struct A b0;
42  struct B b1;
43
44  b0 = *(struct A*)(args[0]);
45  b1 = *(struct B*)(args[1]);
46
47  *(B*)resp = B_fn(b0, b1);
48}
49
50int main (void)
51{
52  ffi_cif cif;
53#ifndef USING_MMAP
54  static ffi_closure cl;
55#endif
56  ffi_closure *pcl;
57  void* args_dbl[3];
58  ffi_type* cls_struct_fields[3];
59  ffi_type* cls_struct_fields1[3];
60  ffi_type cls_struct_type, cls_struct_type1;
61  ffi_type* dbl_arg_types[3];
62
63#ifdef USING_MMAP
64  pcl = allocate_mmap (sizeof(ffi_closure));
65#else
66  pcl = &cl;
67#endif
68
69  cls_struct_type.size = 0;
70  cls_struct_type.alignment = 0;
71  cls_struct_type.type = FFI_TYPE_STRUCT;
72  cls_struct_type.elements = cls_struct_fields;
73
74  cls_struct_type1.size = 0;
75  cls_struct_type1.alignment = 0;
76  cls_struct_type1.type = FFI_TYPE_STRUCT;
77  cls_struct_type1.elements = cls_struct_fields1;
78
79  struct A e_dbl = { 1.0, 7};
80  struct B f_dbl = {{12.0 , 127}, 99};
81
82  struct B res_dbl;
83
84  cls_struct_fields[0] = &ffi_type_longdouble;
85  cls_struct_fields[1] = &ffi_type_uchar;
86  cls_struct_fields[2] = NULL;
87
88  cls_struct_fields1[0] = &cls_struct_type;
89  cls_struct_fields1[1] = &ffi_type_uchar;
90  cls_struct_fields1[2] = NULL;
91
92
93  dbl_arg_types[0] = &cls_struct_type;
94  dbl_arg_types[1] = &cls_struct_type1;
95  dbl_arg_types[2] = NULL;
96
97  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
98		     dbl_arg_types) == FFI_OK);
99
100  args_dbl[0] = &e_dbl;
101  args_dbl[1] = &f_dbl;
102  args_dbl[2] = NULL;
103
104  ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
105  /* { dg-output "1 7 12 127 99: 13 233 134" } */
106  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
107  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
108  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
109
110
111  CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
112
113  res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl);
114  /* { dg-output "\n1 7 12 127 99: 13 233 134" } */
115  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
116  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
117  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
118
119  exit(0);
120}
121