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libfringe/benches/syscall.rs

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// This file is part of libfringe, a low-level green threading library.
// Copyright (c) edef <edef@edef.eu>
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://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.
#![cfg(target_os = "linux")]
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#![feature(asm, test)]
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extern crate test;
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#[cfg(target_arch = "x86_64")]
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#[bench]
fn syscall(b: &mut test::Bencher) {
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b.iter(|| unsafe {
asm!("movq $$102, %rax\n\
syscall"
:
:
: "rax", "rcx"
: "volatile");
});
}
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#[cfg(target_arch = "x86")]
#[bench]
fn syscall(b: &mut test::Bencher) {
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b.iter(|| unsafe {
asm!("mov $$24, %eax\n\
int $$0x80"
:
:
: "eax"
: "volatile");
});
}