error: could not compile `x86_64`

[GraydenH]

Hi, I tried to follow the "Testing" post but ran into errors after adding the x86_64 crate

error: cannot find macro `asm` in this scope
  --> C:\Users\grayd\.cargo\registry\src\github.com-1ecc6299db9ec823\x86_64-0.13.2\src\instructions\interrupts.rs:18:9
   |
18 |         asm!("sti", options(nomem, nostack));
   |         ^^^
   |
   = note: consider importing this macro:
           core::arch::asm

error: could not compile `x86_64` due to 42 previous errors
warning: build failed, waiting for other jobs to finish...
Error: Bootloader build failed.
Stderr:

cargo.toml

[package]
name = "os"
version = "0.1.0"
authors = ["Grayden Hormes <[email protected]>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
bootloader = "0.9.8"
volatile = "0.2.6"
spin = "0.5.2"
x86_64 = "0.14.2"

[dependencies.lazy_static]
version = "1.0"
features = ["spin_no_std"]

[package.metadata.bootimage]
test-args = ["-device", "isa-debug-exit,iobase=0xf4,iosize=0x04"]

main.rs

#![no_std]
#![no_main]

#![feature(custom_test_frameworks)]
#![test_runner(crate::test_runner)]
#![reexport_test_harness_main = "test_main"]

use core::panic::PanicInfo;

mod vga_buffer;

#[no_mangle]
pub extern "C" fn _start() -> ! {
    println!("Hello World{}", "!");

    #[cfg(test)]
    test_main();

    loop {}
}

/// This function is called on panic.
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
    println!("{}", info);
    loop {}
}

#[cfg(test)]
fn test_runner(tests: &[&dyn Fn()]) {
    println!("Running {} tests", tests.len());
    for test in tests {
        test();
    }
    /// new
    exit_qemu(QemuExitCode::Success);
}

#[test_case]
fn trivial_assertion() {
    print!("trivial assertion... ");
    assert_eq!(1, 1);
    println!("[ok]");
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[repr(u32)]
pub enum QemuExitCode {
    Success = 0x10,
    Failed = 0x11,
}

pub fn exit_qemu(exit_code: QemuExitCode) {
    use x86_64::instructions::port::Port;

    unsafe {
        let mut port = Port::new(0xf4);
        port.write(exit_code as u32);
    }
}

I tried with x86_64 = "0.14.9" and updated my nightly from 1.5.0 to 1.6.2 but no changes.

[toothbrush7777777]

In the output you posted, note that it is using x86_64 v0.13.2 ([...]x86_64-0.13.2[...]) which is a very old version. Use the latest version of x86_64 (version 0.14.9) which should correct this issue. Also, make sure that your nightly is at least version 1.59.0. You can also try running cargo clean before building again.

[HipyCas]

I'm getting the same error, tried everything I could but nothing fixes it

[toothbrush7777777]

Try running cargo tree and post the output.

[fairjm]

Same problem but I find it was already fixed.
try to update bootloader to at least 0.9.20
see:
https://github.com/phil-opp/blog_os/issues/1066

[HipyCas]

As @fairjm says, uploading bootloader to the latest version fixes the problem. Thanks everyone for your help!

[byoboo]

I had the same issue as above but it only occurred in my windows environment and not in my WSL environment even after following the steps outlined above.

I ended up running rustup update and that appears to have fixed the issue in my windows environment

[phil-opp]

Looks like this issue is solved.