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> 20030911 */
8
9 /* { dg-do run } */
10 #include "ffitest.h"
11
12 typedef struct A {
13 unsigned long a;
14 unsigned char b;
15 } A;
16
17 typedef struct B {
18 struct A x;
19 unsigned char y;
20 } B;
21
B_fn(struct A b0,struct B b1)22 B B_fn(struct A b0, struct B b1)
23 {
24 struct B result;
25
26 result.x.a = b0.a + b1.x.a;
27 result.x.b = b0.b + b1.x.b + b1.y;
28 result.y = b0.b + b1.x.b;
29
30 printf("%lu %d %lu %d %d: %lu %d %d\n", b0.a, b0.b, b1.x.a, b1.x.b, b1.y,
31 result.x.a, result.x.b, result.y);
32
33 return result;
34 }
35
36 static void
B_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)37 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
38 void* userdata __UNUSED__)
39 {
40 struct A b0;
41 struct B b1;
42
43 b0 = *(struct A*)(args[0]);
44 b1 = *(struct B*)(args[1]);
45
46 *(B*)resp = B_fn(b0, b1);
47 }
48
main(void)49 int main (void)
50 {
51 ffi_cif cif;
52 #ifndef USING_MMAP
53 static ffi_closure cl;
54 #endif
55 ffi_closure *pcl;
56 void* args_dbl[3];
57 ffi_type* cls_struct_fields[3];
58 ffi_type* cls_struct_fields1[3];
59 ffi_type cls_struct_type, cls_struct_type1;
60 ffi_type* dbl_arg_types[3];
61
62 #ifdef USING_MMAP
63 pcl = allocate_mmap (sizeof(ffi_closure));
64 #else
65 pcl = &cl;
66 #endif
67
68 cls_struct_type.size = 0;
69 cls_struct_type.alignment = 0;
70 cls_struct_type.type = FFI_TYPE_STRUCT;
71 cls_struct_type.elements = cls_struct_fields;
72
73 cls_struct_type1.size = 0;
74 cls_struct_type1.alignment = 0;
75 cls_struct_type1.type = FFI_TYPE_STRUCT;
76 cls_struct_type1.elements = cls_struct_fields1;
77
78 struct A e_dbl = { 1, 7};
79 struct B f_dbl = {{12 , 127}, 99};
80
81 struct B res_dbl;
82
83 cls_struct_fields[0] = &ffi_type_ulong;
84 cls_struct_fields[1] = &ffi_type_uchar;
85 cls_struct_fields[2] = NULL;
86
87 cls_struct_fields1[0] = &cls_struct_type;
88 cls_struct_fields1[1] = &ffi_type_uchar;
89 cls_struct_fields1[2] = NULL;
90
91
92 dbl_arg_types[0] = &cls_struct_type;
93 dbl_arg_types[1] = &cls_struct_type1;
94 dbl_arg_types[2] = NULL;
95
96 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
97 dbl_arg_types) == FFI_OK);
98
99 args_dbl[0] = &e_dbl;
100 args_dbl[1] = &f_dbl;
101 args_dbl[2] = NULL;
102
103 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
104 /* { dg-output "1 7 12 127 99: 13 233 134" } */
105 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
106 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
107 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
108
109 CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
110
111 res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl);
112 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */
113 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
114 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
115 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
116
117 exit(0);
118 }
119