rust/src/test/auxiliary/extern_calling_convention.rs

// Copyright 2013-2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

// Make sure Rust generates the correct calling convention for extern
// functions.

#[inline(never)]
#[cfg(target_arch = "x86_64")]
pub extern "win64" fn foo(a: isize, b: isize, c: isize, d: isize) {
    assert!(a == 1);
    assert!(b == 2);
    assert!(c == 3);
    assert!(d == 4);

    println!("a: {}, b: {}, c: {}, d: {}",
             a, b, c, d)
}

#[inline(never)]
#[cfg(any(target_arch = "x86", target_arch = "arm", target_arch = "aarch64"))]
pub extern fn foo(a: isize, b: isize, c: isize, d: isize) {
    assert!(a == 1);
    assert!(b == 2);
    assert!(c == 3);
    assert!(d == 4);

    println!("a: {}, b: {}, c: {}, d: {}",
             a, b, c, d)
}