pie-boot-loader-aarch64 0.2.2

Boot kernel code with mmu.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

use kdef_pgtable::PAGE_SIZE;
use std::{io::Write, path::PathBuf};

fn main() {
    println!("cargo::rustc-check-cfg=cfg(hard_float)");

    let ld_file = "loader.x";

    println!("cargo::rustc-link-arg=-T{ld_file}");
    println!("cargo::rustc-link-arg=-znostart-stop-gc");
    // println!("cargo::rustc-link-arg=-Map=target/loader.map");

    let target = std::env::var("TARGET").unwrap();

    if target.as_str() == "aarch64-unknown-none" {
        println!("cargo::rustc-cfg=hard_float");
    }

    println!("cargo:rerun-if-changed=link.ld");
    println!("cargo:rustc-link-search={}", out_dir().display());

    let mut content = include_str!("link.ld").to_string();
    content = content.replace("{PAGE_SIZE}", &format!("{PAGE_SIZE:#x}"));
    let mut file = std::fs::File::create(out_dir().join(ld_file)).expect("ld create failed");
    file.write_all(content.as_bytes()).expect("ld write failed");
}

fn out_dir() -> PathBuf {
    PathBuf::from(std::env::var("OUT_DIR").unwrap())
}