1 /* Area: ffi_call
2 Purpose: Test passing struct in variable argument lists.
3 Limitations: none.
4 PR: none.
5 Originator: ARM Ltd. */
6
7 /* { dg-do run } */
8 /* { dg-output "" { xfail avr32*-*-* } } */
9
10 #include "ffitest.h"
11 #include <stdarg.h>
12
13 struct small_tag
14 {
15 unsigned char a;
16 unsigned char b;
17 };
18
19 struct large_tag
20 {
21 unsigned a;
22 unsigned b;
23 unsigned c;
24 unsigned d;
25 unsigned e;
26 };
27
28 static struct large_tag
test_fn(int n,...)29 test_fn (int n, ...)
30 {
31 va_list ap;
32 struct small_tag s1;
33 struct small_tag s2;
34 struct large_tag l;
35
36 va_start (ap, n);
37 s1 = va_arg (ap, struct small_tag);
38 l = va_arg (ap, struct large_tag);
39 s2 = va_arg (ap, struct small_tag);
40 printf ("%u %u %u %u %u %u %u %u %u\n", s1.a, s1.b, l.a, l.b, l.c, l.d, l.e,
41 s2.a, s2.b);
42 va_end (ap);
43 l.a += s1.a;
44 l.b += s1.b;
45 l.c += s2.a;
46 l.d += s2.b;
47 return l;
48 }
49
50 int
main(void)51 main (void)
52 {
53 ffi_cif cif;
54 void* args[5];
55 ffi_type* arg_types[5];
56
57 ffi_type s_type;
58 ffi_type *s_type_elements[3];
59
60 ffi_type l_type;
61 ffi_type *l_type_elements[6];
62
63 struct small_tag s1;
64 struct small_tag s2;
65 struct large_tag l1;
66
67 int n;
68 struct large_tag res;
69
70 s_type.size = 0;
71 s_type.alignment = 0;
72 s_type.type = FFI_TYPE_STRUCT;
73 s_type.elements = s_type_elements;
74
75 s_type_elements[0] = &ffi_type_uchar;
76 s_type_elements[1] = &ffi_type_uchar;
77 s_type_elements[2] = NULL;
78
79 l_type.size = 0;
80 l_type.alignment = 0;
81 l_type.type = FFI_TYPE_STRUCT;
82 l_type.elements = l_type_elements;
83
84 l_type_elements[0] = &ffi_type_uint;
85 l_type_elements[1] = &ffi_type_uint;
86 l_type_elements[2] = &ffi_type_uint;
87 l_type_elements[3] = &ffi_type_uint;
88 l_type_elements[4] = &ffi_type_uint;
89 l_type_elements[5] = NULL;
90
91 arg_types[0] = &ffi_type_sint;
92 arg_types[1] = &s_type;
93 arg_types[2] = &l_type;
94 arg_types[3] = &s_type;
95 arg_types[4] = NULL;
96
97 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 4, &l_type, arg_types) == FFI_OK);
98
99 s1.a = 5;
100 s1.b = 6;
101
102 l1.a = 10;
103 l1.b = 11;
104 l1.c = 12;
105 l1.d = 13;
106 l1.e = 14;
107
108 s2.a = 7;
109 s2.b = 8;
110
111 n = 41;
112
113 args[0] = &n;
114 args[1] = &s1;
115 args[2] = &l1;
116 args[3] = &s2;
117 args[4] = NULL;
118
119 ffi_call(&cif, FFI_FN(test_fn), &res, args);
120 /* { dg-output "5 6 10 11 12 13 14 7 8" } */
121 printf("res: %d %d %d %d %d\n", res.a, res.b, res.c, res.d, res.e);
122 /* { dg-output "\nres: 15 17 19 21 14" } */
123
124 return 0;
125 }
126