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 
12 typedef struct A {
13   unsigned char a;
14   unsigned long long b;
15 } A;
16 
17 typedef struct B {
18   struct A x;
19   unsigned char y;
20 } B;
21 
22 typedef struct C {
23   unsigned long d;
24   unsigned char e;
25 } C;
26 
B_fn(struct A b2,struct B b3,struct C b4)27 static 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 
42 static void
B_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)43 B_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 
main(void)57 int main (void)
58 {
59   ffi_cif cif;
60   void *code;
61   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
62   void* args_dbl[4];
63   ffi_type* cls_struct_fields[3];
64   ffi_type* cls_struct_fields1[3];
65   ffi_type* cls_struct_fields2[3];
66   ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
67   ffi_type* dbl_arg_types[4];
68 
69   struct A e_dbl = { 1, 7LL};
70   struct B f_dbl = {{12.0 , 127}, 99};
71   struct C g_dbl = { 2, 9};
72 
73   struct B res_dbl;
74 
75   cls_struct_type.size = 0;
76   cls_struct_type.alignment = 0;
77   cls_struct_type.type = FFI_TYPE_STRUCT;
78   cls_struct_type.elements = cls_struct_fields;
79 
80   cls_struct_type1.size = 0;
81   cls_struct_type1.alignment = 0;
82   cls_struct_type1.type = FFI_TYPE_STRUCT;
83   cls_struct_type1.elements = cls_struct_fields1;
84 
85   cls_struct_type2.size = 0;
86   cls_struct_type2.alignment = 0;
87   cls_struct_type2.type = FFI_TYPE_STRUCT;
88   cls_struct_type2.elements = cls_struct_fields2;
89 
90   cls_struct_fields[0] = &ffi_type_uchar;
91   cls_struct_fields[1] = &ffi_type_uint64;
92   cls_struct_fields[2] = NULL;
93 
94   cls_struct_fields1[0] = &cls_struct_type;
95   cls_struct_fields1[1] = &ffi_type_uchar;
96   cls_struct_fields1[2] = NULL;
97 
98   cls_struct_fields2[0] = &ffi_type_ulong;
99   cls_struct_fields2[1] = &ffi_type_uchar;
100   cls_struct_fields2[2] = NULL;
101 
102 
103   dbl_arg_types[0] = &cls_struct_type;
104   dbl_arg_types[1] = &cls_struct_type1;
105   dbl_arg_types[2] = &cls_struct_type2;
106   dbl_arg_types[3] = NULL;
107 
108   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
109 		     dbl_arg_types) == FFI_OK);
110 
111   args_dbl[0] = &e_dbl;
112   args_dbl[1] = &f_dbl;
113   args_dbl[2] = &g_dbl;
114   args_dbl[3] = NULL;
115 
116   ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
117   /* { dg-output "1 7 12 127 99 2 9: 15 242 143" } */
118   CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
119   CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
120   CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
121 
122   CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
123 
124   res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl);
125   /* { dg-output "\n1 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   exit(0);
131 }
132