nested_struct9.c revision 8c63892438fbb7ef754e55c60220dd02e7c8fd70 
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  unsigned char a;
14  unsigned long long b;
15} A;
16
17typedef struct B {
18  struct A x;
19  unsigned char y;
20} B;
21
22typedef struct C {
23  unsigned long d;
24  unsigned char e;
25} C;
26
27static B B_fn(struct A b2, struct B b3, struct C b4)
28{
29  struct B result;
30
31  result.x.a = b2.a + b3.x.a + b4.d;
32  result.x.b = b2.b + b3.x.b + b3.y + b4.e;
33  result.y = b2.b + b3.x.b + b4.e;
34
35  printf("%d %d %d %d %d %d %d: %d %d %d\n", b2.a, (int)b2.b,
36	 b3.x.a, (int)b3.x.b, b3.y, (int)b4.d, b4.e,
37	 result.x.a, (int)result.x.b, result.y);
38
39  return result;
40}
41
42static void
43B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
44     void* userdata __UNUSED__)
45{
46  struct A b0;
47  struct B b1;
48  struct C b2;
49
50  b0 = *(struct A*)(args[0]);
51  b1 = *(struct B*)(args[1]);
52  b2 = *(struct C*)(args[2]);
53
54  *(B*)resp = B_fn(b0, b1, b2);
55}
56
57int main (void)
58{
59  ffi_cif cif;
60#ifndef USING_MMAP
61  static ffi_closure cl;
62#endif
63  ffi_closure *pcl;
64  void* args_dbl[4];
65  ffi_type* cls_struct_fields[3];
66  ffi_type* cls_struct_fields1[3];
67  ffi_type* cls_struct_fields2[3];
68  ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
69  ffi_type* dbl_arg_types[4];
70
71#ifdef USING_MMAP
72  pcl = allocate_mmap (sizeof(ffi_closure));
73#else
74  pcl = &cl;
75#endif
76
77  cls_struct_type.size = 0;
78  cls_struct_type.alignment = 0;
79  cls_struct_type.type = FFI_TYPE_STRUCT;
80  cls_struct_type.elements = cls_struct_fields;
81
82  cls_struct_type1.size = 0;
83  cls_struct_type1.alignment = 0;
84  cls_struct_type1.type = FFI_TYPE_STRUCT;
85  cls_struct_type1.elements = cls_struct_fields1;
86
87  cls_struct_type2.size = 0;
88  cls_struct_type2.alignment = 0;
89  cls_struct_type2.type = FFI_TYPE_STRUCT;
90  cls_struct_type2.elements = cls_struct_fields2;
91
92  struct A e_dbl = { 1, 7LL};
93  struct B f_dbl = {{12.0 , 127}, 99};
94  struct C g_dbl = { 2, 9};
95
96  struct B res_dbl;
97
98  cls_struct_fields[0] = &ffi_type_uchar;
99  cls_struct_fields[1] = &ffi_type_uint64;
100  cls_struct_fields[2] = NULL;
101
102  cls_struct_fields1[0] = &cls_struct_type;
103  cls_struct_fields1[1] = &ffi_type_uchar;
104  cls_struct_fields1[2] = NULL;
105
106  cls_struct_fields2[0] = &ffi_type_ulong;
107  cls_struct_fields2[1] = &ffi_type_uchar;
108  cls_struct_fields2[2] = NULL;
109
110
111  dbl_arg_types[0] = &cls_struct_type;
112  dbl_arg_types[1] = &cls_struct_type1;
113  dbl_arg_types[2] = &cls_struct_type2;
114  dbl_arg_types[3] = NULL;
115
116  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
117		     dbl_arg_types) == FFI_OK);
118
119  args_dbl[0] = &e_dbl;
120  args_dbl[1] = &f_dbl;
121  args_dbl[2] = &g_dbl;
122  args_dbl[3] = NULL;
123
124  ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
125  /* { dg-output "1 7 12 127 99 2 9: 15 242 143" } */
126  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
127  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
128  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
129
130  CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
131
132  res_dbl = ((B(*)(A, B, C))(pcl))(e_dbl, f_dbl, g_dbl);
133  /* { dg-output "\n1 7 12 127 99 2 9: 15 242 143" } */
134  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
135  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
136  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
137
138  exit(0);
139}
140