| // run-pass |
| #![allow(dead_code)] |
| // ignore-wasm32-bare no libc to test ffi with |
| |
| #[repr(C)] |
| #[derive(Copy, Clone)] |
| pub struct Quad { a: u64, b: u64, c: u64, d: u64 } |
| |
| #[repr(C)] |
| #[derive(Copy, Clone)] |
| pub struct Floats { a: f64, b: u8, c: f64 } |
| |
| mod rustrt { |
| use super::{Floats, Quad}; |
| |
| #[link(name = "rust_test_helpers", kind = "static")] |
| extern { |
| pub fn rust_dbg_abi_1(q: Quad) -> Quad; |
| pub fn rust_dbg_abi_2(f: Floats) -> Floats; |
| } |
| } |
| |
| fn test1() { |
| unsafe { |
| let q = Quad { a: 0xaaaa_aaaa_aaaa_aaaa, |
| b: 0xbbbb_bbbb_bbbb_bbbb, |
| c: 0xcccc_cccc_cccc_cccc, |
| d: 0xdddd_dddd_dddd_dddd }; |
| let qq = rustrt::rust_dbg_abi_1(q); |
| println!("a: {:x}", qq.a as usize); |
| println!("b: {:x}", qq.b as usize); |
| println!("c: {:x}", qq.c as usize); |
| println!("d: {:x}", qq.d as usize); |
| assert_eq!(qq.a, q.c + 1); |
| assert_eq!(qq.b, q.d - 1); |
| assert_eq!(qq.c, q.a + 1); |
| assert_eq!(qq.d, q.b - 1); |
| } |
| } |
| |
| #[cfg(target_pointer_width = "64")] |
| fn test2() { |
| unsafe { |
| let f = Floats { a: 1.234567890e-15_f64, |
| b: 0b_1010_1010, |
| c: 1.0987654321e-15_f64 }; |
| let ff = rustrt::rust_dbg_abi_2(f); |
| println!("a: {}", ff.a as f64); |
| println!("b: {}", ff.b as usize); |
| println!("c: {}", ff.c as f64); |
| assert_eq!(ff.a, f.c + 1.0f64); |
| assert_eq!(ff.b, 0xff); |
| assert_eq!(ff.c, f.a - 1.0f64); |
| } |
| } |
| |
| #[cfg(target_pointer_width = "32")] |
| fn test2() { |
| } |
| |
| pub fn main() { |
| test1(); |
| test2(); |
| } |