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: PR 25630.
7 Originator: <andreast@gcc.gnu.org> 20051010 */
8
9 /* { dg-do run } */
10 #include "ffitest.h"
11
12 typedef struct A {
13 double 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 b2,struct B b3)22 static 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
37 static void
B_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)38 B_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
main(void)50 int 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_double;
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 CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
111
112 res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl);
113 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */
114 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
115 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
116 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
117
118 exit(0);
119 }
120