1 /* Area:	ffi_call
2    Purpose:	Check structures.
3    Limitations:	none.
4    PR:		none.
5    Originator:	From the original ffitest.c  */
6 
7 /* { dg-do run } */
8 #include "ffitest.h"
9 
10 typedef struct
11 {
12   unsigned char uc;
13   double d;
14   unsigned int ui;
15 } test_structure_1;
16 
struct1(test_structure_1 ts)17 static test_structure_1 struct1(test_structure_1 ts)
18 {
19   ts.uc++;
20   ts.d--;
21   ts.ui++;
22 
23   return ts;
24 }
25 
main(void)26 int main (void)
27 {
28   ffi_cif cif;
29   ffi_type *args[MAX_ARGS];
30   void *values[MAX_ARGS];
31   ffi_type ts1_type;
32   ffi_type *ts1_type_elements[4];
33 
34   test_structure_1 ts1_arg;
35 
36   /* This is a hack to get a properly aligned result buffer */
37   test_structure_1 *ts1_result =
38     (test_structure_1 *) malloc (sizeof(test_structure_1));
39 
40   ts1_type.size = 0;
41   ts1_type.alignment = 0;
42   ts1_type.type = FFI_TYPE_STRUCT;
43   ts1_type.elements = ts1_type_elements;
44   ts1_type_elements[0] = &ffi_type_uchar;
45   ts1_type_elements[1] = &ffi_type_double;
46   ts1_type_elements[2] = &ffi_type_uint;
47   ts1_type_elements[3] = NULL;
48 
49   args[0] = &ts1_type;
50   values[0] = &ts1_arg;
51 
52   /* Initialize the cif */
53   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
54 		     &ts1_type, args) == FFI_OK);
55 
56   ts1_arg.uc = '\x01';
57   ts1_arg.d = 3.14159;
58   ts1_arg.ui = 555;
59 
60   ffi_call(&cif, FFI_FN(struct1), ts1_result, values);
61 
62   CHECK(ts1_result->ui == 556);
63   CHECK(ts1_result->d == 3.14159 - 1);
64 
65   free (ts1_result);
66   exit(0);
67 }
68