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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 long long a;
14   unsigned char b;
15 } A;
16 
17 typedef struct B {
18   unsigned char y;
19   struct A x;
20   unsigned int z;
21 } B;
22 
23 typedef struct C {
24   unsigned long long d;
25   unsigned char e;
26 } C;
27 
B_fn(struct A b2,struct B b3,struct C b4)28 static 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 
43 static void
B_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)44 B_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 
main(void)58 int main (void)
59 {
60   ffi_cif cif;
61   void *code;
62   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
63   void* args_dbl[4];
64   ffi_type* cls_struct_fields[3];
65   ffi_type* cls_struct_fields1[4];
66   ffi_type* cls_struct_fields2[3];
67   ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
68   ffi_type* dbl_arg_types[4];
69 
70   struct A e_dbl = { 1LL, 7};
71   struct B f_dbl = { 99, {12LL , 127}, 255};
72   struct C g_dbl = { 2LL, 9};
73 
74   struct B res_dbl;
75 
76   cls_struct_type.size = 0;
77   cls_struct_type.alignment = 0;
78   cls_struct_type.type = FFI_TYPE_STRUCT;
79   cls_struct_type.elements = cls_struct_fields;
80 
81   cls_struct_type1.size = 0;
82   cls_struct_type1.alignment = 0;
83   cls_struct_type1.type = FFI_TYPE_STRUCT;
84   cls_struct_type1.elements = cls_struct_fields1;
85 
86   cls_struct_type2.size = 0;
87   cls_struct_type2.alignment = 0;
88   cls_struct_type2.type = FFI_TYPE_STRUCT;
89   cls_struct_type2.elements = cls_struct_fields2;
90 
91   cls_struct_fields[0] = &ffi_type_uint64;
92   cls_struct_fields[1] = &ffi_type_uchar;
93   cls_struct_fields[2] = NULL;
94 
95   cls_struct_fields1[0] = &ffi_type_uchar;
96   cls_struct_fields1[1] = &cls_struct_type;
97   cls_struct_fields1[2] = &ffi_type_uint;
98   cls_struct_fields1[3] = NULL;
99 
100   cls_struct_fields2[0] = &ffi_type_uint64;
101   cls_struct_fields2[1] = &ffi_type_uchar;
102   cls_struct_fields2[2] = NULL;
103 
104 
105   dbl_arg_types[0] = &cls_struct_type;
106   dbl_arg_types[1] = &cls_struct_type1;
107   dbl_arg_types[2] = &cls_struct_type2;
108   dbl_arg_types[3] = NULL;
109 
110   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
111 		     dbl_arg_types) == FFI_OK);
112 
113   args_dbl[0] = &e_dbl;
114   args_dbl[1] = &f_dbl;
115   args_dbl[2] = &g_dbl;
116   args_dbl[3] = NULL;
117 
118   ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
119   /* { dg-output "1 7 12 127 99 255 2 9: 270 242 143" } */
120   CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d));
121   CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
122   CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
123 
124   CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
125 
126   res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl);
127   /* { dg-output "\n1 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   exit(0);
133 }
134