1 /* Area: ffi_call, closure_call
2 Purpose: Check structure passing with different structure size.
3 Especially with small structures which may fit in one
4 register. Depending on the ABI.
5 Limitations: none.
6 PR: none.
7 Originator: <andreast@gcc.gnu.org> 20030902 */
8
9 /* { dg-do run } */
10 #include "ffitest.h"
11
12 typedef struct cls_struct_3_1byte {
13 unsigned char a;
14 unsigned char b;
15 unsigned char c;
16 } cls_struct_3_1byte;
17
cls_struct_3_1byte_fn(struct cls_struct_3_1byte a1,struct cls_struct_3_1byte a2)18 cls_struct_3_1byte cls_struct_3_1byte_fn(struct cls_struct_3_1byte a1,
19 struct cls_struct_3_1byte a2)
20 {
21 struct cls_struct_3_1byte result;
22
23 result.a = a1.a + a2.a;
24 result.b = a1.b + a2.b;
25 result.c = a1.c + a2.c;
26
27 printf("%d %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c,
28 a2.a, a2.b, a2.c,
29 result.a, result.b, result.c);
30
31 return result;
32 }
33
34 static void
cls_struct_3_1byte_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)35 cls_struct_3_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
36 void* userdata __UNUSED__)
37 {
38
39 struct cls_struct_3_1byte a1, a2;
40
41 a1 = *(struct cls_struct_3_1byte*)(args[0]);
42 a2 = *(struct cls_struct_3_1byte*)(args[1]);
43
44 *(cls_struct_3_1byte*)resp = cls_struct_3_1byte_fn(a1, a2);
45 }
46
main(void)47 int main (void)
48 {
49 ffi_cif cif;
50 void *code;
51 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
52 void* args_dbl[5];
53 ffi_type* cls_struct_fields[4];
54 ffi_type cls_struct_type;
55 ffi_type* dbl_arg_types[5];
56
57 struct cls_struct_3_1byte g_dbl = { 12, 13, 14 };
58 struct cls_struct_3_1byte f_dbl = { 178, 179, 180 };
59 struct cls_struct_3_1byte res_dbl;
60
61 cls_struct_type.size = 0;
62 cls_struct_type.alignment = 0;
63 cls_struct_type.type = FFI_TYPE_STRUCT;
64 cls_struct_type.elements = cls_struct_fields;
65
66 cls_struct_fields[0] = &ffi_type_uchar;
67 cls_struct_fields[1] = &ffi_type_uchar;
68 cls_struct_fields[2] = &ffi_type_uchar;
69 cls_struct_fields[3] = NULL;
70
71 dbl_arg_types[0] = &cls_struct_type;
72 dbl_arg_types[1] = &cls_struct_type;
73 dbl_arg_types[2] = NULL;
74
75 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
76 dbl_arg_types) == FFI_OK);
77
78 args_dbl[0] = &g_dbl;
79 args_dbl[1] = &f_dbl;
80 args_dbl[2] = NULL;
81
82 ffi_call(&cif, FFI_FN(cls_struct_3_1byte_fn), &res_dbl, args_dbl);
83 /* { dg-output "12 13 14 178 179 180: 190 192 194" } */
84 printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
85 /* { dg-output "\nres: 190 192 194" } */
86
87 CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_3_1byte_gn, NULL, code) == FFI_OK);
88
89 res_dbl = ((cls_struct_3_1byte(*)(cls_struct_3_1byte, cls_struct_3_1byte))(code))(g_dbl, f_dbl);
90 /* { dg-output "\n12 13 14 178 179 180: 190 192 194" } */
91 printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
92 /* { dg-output "\nres: 190 192 194" } */
93
94 exit(0);
95 }
96