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 
10 
11 /* { dg-do run } */
12 #include "ffitest.h"
13 
14 typedef struct cls_struct_1_1byte {
15   unsigned char a;
16 } cls_struct_1_1byte;
17 
cls_struct_1_1byte_fn(struct cls_struct_1_1byte a1,struct cls_struct_1_1byte a2)18 cls_struct_1_1byte cls_struct_1_1byte_fn(struct cls_struct_1_1byte a1,
19 			    struct cls_struct_1_1byte a2)
20 {
21   struct cls_struct_1_1byte result;
22 
23   result.a = a1.a + a2.a;
24 
25   printf("%d %d: %d\n", a1.a, a2.a, result.a);
26 
27   return  result;
28 }
29 
30 static void
cls_struct_1_1byte_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)31 cls_struct_1_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
32 		      void* userdata __UNUSED__)
33 {
34 
35   struct cls_struct_1_1byte a1, a2;
36 
37   a1 = *(struct cls_struct_1_1byte*)(args[0]);
38   a2 = *(struct cls_struct_1_1byte*)(args[1]);
39 
40   *(cls_struct_1_1byte*)resp = cls_struct_1_1byte_fn(a1, a2);
41 }
42 
main(void)43 int main (void)
44 {
45   ffi_cif cif;
46   void *code;
47   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
48   void* args_dbl[5];
49   ffi_type* cls_struct_fields[2];
50   ffi_type cls_struct_type;
51   ffi_type* dbl_arg_types[5];
52 
53   struct cls_struct_1_1byte g_dbl = { 12 };
54   struct cls_struct_1_1byte f_dbl = { 178 };
55   struct cls_struct_1_1byte res_dbl;
56 
57   cls_struct_type.size = 0;
58   cls_struct_type.alignment = 0;
59   cls_struct_type.type = FFI_TYPE_STRUCT;
60   cls_struct_type.elements = cls_struct_fields;
61 
62   cls_struct_fields[0] = &ffi_type_uchar;
63   cls_struct_fields[1] = NULL;
64 
65   dbl_arg_types[0] = &cls_struct_type;
66   dbl_arg_types[1] = &cls_struct_type;
67   dbl_arg_types[2] = NULL;
68 
69   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
70 		     dbl_arg_types) == FFI_OK);
71 
72   args_dbl[0] = &g_dbl;
73   args_dbl[1] = &f_dbl;
74   args_dbl[2] = NULL;
75 
76   ffi_call(&cif, FFI_FN(cls_struct_1_1byte_fn), &res_dbl, args_dbl);
77   /* { dg-output "12 178: 190" } */
78   printf("res: %d\n", res_dbl.a);
79   /* { dg-output "\nres: 190" } */
80 
81   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_1_1byte_gn, NULL, code) == FFI_OK);
82 
83   res_dbl = ((cls_struct_1_1byte(*)(cls_struct_1_1byte, cls_struct_1_1byte))(code))(g_dbl, f_dbl);
84   /* { dg-output "\n12 178: 190" } */
85   printf("res: %d\n", res_dbl.a);
86   /* { dg-output "\nres: 190" } */
87 
88   exit(0);
89 }
90