1 // run-pass
2 #![allow(dead_code)]
3 // ignore-wasm32-bare no libc to test ffi with
4
5 #[repr(C)]
6 #[derive(Copy, Clone)]
7 pub struct Quad {
8 a: u64,
9 b: u64,
10 c: u64,
11 d: u64,
12 }
13
14 #[repr(C)]
15 #[derive(Copy, Clone)]
16 pub struct Floats {
17 a: f64,
18 b: u8,
19 c: f64,
20 }
21
22 #[repr(C)]
23 #[derive(Copy, Clone)]
24 pub struct CharCharDouble {
25 a: u8,
26 b: u8,
27 c: f64,
28 }
29
30 #[repr(C)]
31 #[derive(Copy, Clone)]
32 pub struct CharCharFloat {
33 a: u8,
34 b: u8,
35 c: f32,
36 }
37
38 mod rustrt {
39 use super::{CharCharDouble, CharCharFloat, Floats, Quad};
40
41 #[link(name = "rust_test_helpers", kind = "static")]
42 extern "C" {
rust_dbg_abi_1(q: Quad) -> Quad43 pub fn rust_dbg_abi_1(q: Quad) -> Quad;
rust_dbg_abi_2(f: Floats) -> Floats44 pub fn rust_dbg_abi_2(f: Floats) -> Floats;
rust_dbg_abi_3(a: CharCharDouble) -> CharCharDouble45 pub fn rust_dbg_abi_3(a: CharCharDouble) -> CharCharDouble;
rust_dbg_abi_4(a: CharCharFloat) -> CharCharFloat46 pub fn rust_dbg_abi_4(a: CharCharFloat) -> CharCharFloat;
47 }
48 }
49
test1()50 fn test1() {
51 unsafe {
52 let q = Quad {
53 a: 0xaaaa_aaaa_aaaa_aaaa,
54 b: 0xbbbb_bbbb_bbbb_bbbb,
55 c: 0xcccc_cccc_cccc_cccc,
56 d: 0xdddd_dddd_dddd_dddd,
57 };
58 let qq = rustrt::rust_dbg_abi_1(q);
59 println!("a: {:x}", qq.a as usize);
60 println!("b: {:x}", qq.b as usize);
61 println!("c: {:x}", qq.c as usize);
62 println!("d: {:x}", qq.d as usize);
63 assert_eq!(qq.a, q.c + 1);
64 assert_eq!(qq.b, q.d - 1);
65 assert_eq!(qq.c, q.a + 1);
66 assert_eq!(qq.d, q.b - 1);
67 }
68 }
69
70 #[cfg(target_pointer_width = "64")]
test2()71 fn test2() {
72 unsafe {
73 let f = Floats { a: 1.234567890e-15_f64, b: 0b_1010_1010, c: 1.0987654321e-15_f64 };
74 let ff = rustrt::rust_dbg_abi_2(f);
75 println!("a: {}", ff.a as f64);
76 println!("b: {}", ff.b as usize);
77 println!("c: {}", ff.c as f64);
78 assert_eq!(ff.a, f.c + 1.0f64);
79 assert_eq!(ff.b, 0xff);
80 assert_eq!(ff.c, f.a - 1.0f64);
81 }
82 }
83
84 #[cfg(target_pointer_width = "32")]
test2()85 fn test2() {}
86
87 #[cfg(target_pointer_width = "64")]
test3()88 fn test3() {
89 unsafe {
90 let a = CharCharDouble { a: 1, b: 2, c: 3. };
91 let b = rustrt::rust_dbg_abi_3(a);
92 println!("a: {}", b.a);
93 println!("b: {}", b.b);
94 println!("c: {}", b.c);
95 assert_eq!(b.a, a.a + 1);
96 assert_eq!(b.b, a.b - 1);
97 assert_eq!(b.c, a.c + 1.0);
98 }
99 }
100
101 #[cfg(target_pointer_width = "32")]
test3()102 fn test3() {}
103
test4()104 fn test4() {
105 unsafe {
106 let a = CharCharFloat { a: 1, b: 2, c: 3. };
107 let b = rustrt::rust_dbg_abi_4(a);
108 println!("a: {}", b.a);
109 println!("b: {}", b.b);
110 println!("c: {}", b.c);
111 assert_eq!(b.a, a.a + 1);
112 assert_eq!(b.b, a.b - 1);
113 assert_eq!(b.c, a.c + 1.0);
114 }
115 }
116
main()117 pub fn main() {
118 test1();
119 test2();
120 test3();
121 test4();
122 }
123