nested_struct10.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 long long a;
14  unsigned char b;
15} A;
16
17typedef struct B {
18  unsigned char y;
19  struct A x;
20  unsigned int z;
21} B;
22
23typedef struct C {
24  unsigned long long d;
25  unsigned char e;
26} C;
27
28static B B_fn(struct A b2, struct B b3, struct C b4)
29{
30  struct B result;
31
32  result.x.a = b2.a + b3.x.a + b3.z + b4.d;
33  result.x.b = b2.b + b3.x.b + b3.y + b4.e;
34  result.y = b2.b + b3.x.b + b4.e;
35
36  printf("%d %d %d %d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b,
37	 (int)b3.x.a, b3.x.b, b3.y, b3.z, (int)b4.d, b4.e,
38	 (int)result.x.a, result.x.b, result.y);
39
40  return result;
41}
42
43static void
44B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
45     void* userdata __UNUSED__)
46{
47  struct A b0;
48  struct B b1;
49  struct C b2;
50
51  b0 = *(struct A*)(args[0]);
52  b1 = *(struct B*)(args[1]);
53  b2 = *(struct C*)(args[2]);
54
55  *(B*)resp = B_fn(b0, b1, b2);
56}
57
58int main (void)
59{
60  ffi_cif cif;
61#ifndef USING_MMAP
62  static ffi_closure cl;
63#endif
64  ffi_closure *pcl;
65  void* args_dbl[4];
66  ffi_type* cls_struct_fields[3];
67  ffi_type* cls_struct_fields1[4];
68  ffi_type* cls_struct_fields2[3];
69  ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
70  ffi_type* dbl_arg_types[4];
71
72#ifdef USING_MMAP
73  pcl = allocate_mmap (sizeof(ffi_closure));
74#else
75  pcl = &cl;
76#endif
77
78  cls_struct_type.size = 0;
79  cls_struct_type.alignment = 0;
80  cls_struct_type.type = FFI_TYPE_STRUCT;
81  cls_struct_type.elements = cls_struct_fields;
82
83  cls_struct_type1.size = 0;
84  cls_struct_type1.alignment = 0;
85  cls_struct_type1.type = FFI_TYPE_STRUCT;
86  cls_struct_type1.elements = cls_struct_fields1;
87
88  cls_struct_type2.size = 0;
89  cls_struct_type2.alignment = 0;
90  cls_struct_type2.type = FFI_TYPE_STRUCT;
91  cls_struct_type2.elements = cls_struct_fields2;
92
93  struct A e_dbl = { 1LL, 7};
94  struct B f_dbl = { 99, {12LL , 127}, 255};
95  struct C g_dbl = { 2LL, 9};
96
97  struct B res_dbl;
98
99  cls_struct_fields[0] = &ffi_type_uint64;
100  cls_struct_fields[1] = &ffi_type_uchar;
101  cls_struct_fields[2] = NULL;
102
103  cls_struct_fields1[0] = &ffi_type_uchar;
104  cls_struct_fields1[1] = &cls_struct_type;
105  cls_struct_fields1[2] = &ffi_type_uint;
106  cls_struct_fields1[3] = NULL;
107
108  cls_struct_fields2[0] = &ffi_type_uint64;
109  cls_struct_fields2[1] = &ffi_type_uchar;
110  cls_struct_fields2[2] = NULL;
111
112
113  dbl_arg_types[0] = &cls_struct_type;
114  dbl_arg_types[1] = &cls_struct_type1;
115  dbl_arg_types[2] = &cls_struct_type2;
116  dbl_arg_types[3] = NULL;
117
118  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
119		     dbl_arg_types) == FFI_OK);
120
121  args_dbl[0] = &e_dbl;
122  args_dbl[1] = &f_dbl;
123  args_dbl[2] = &g_dbl;
124  args_dbl[3] = NULL;
125
126  ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
127  /* { dg-output "1 7 12 127 99 255 2 9: 270 242 143" } */
128  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d));
129  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
130  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
131
132  CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
133
134  res_dbl = ((B(*)(A, B, C))(pcl))(e_dbl, f_dbl, g_dbl);
135  /* { dg-output "\n1 7 12 127 99 255 2 9: 270 242 143" } */
136  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d));
137  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
138  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
139
140  exit(0);
141}
142