Download compiler in CI

.clang-format

@@ -0,0 +1 @@
+ColumnLimit: 200

.forgejo/workflows/build.yaml

@@ -12,6 +12,15 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
+      - name: Download Rust
+        run: |
+          curl -O ${{ vars.RUST_URL }}
+          mkdir rust
+          cd rust
+          unzip ../compiler.zip
+          chmod +x bin/rustc
+      - name: Link toolchain
+        run: . ~/.bashrc && rustup toolchain link x86_64-unknown-os rust
       - name: Build
         run: . ~/.bashrc && ./build.py
       - name: Install cargo-deny

build.py

@@ -18,7 +18,10 @@ def main():
 
     components = ["init", "kernel", "loader"]
     for component in components:
-        cargo_cmd = f'cargo build {"--release" if target == "release" else ""}'
+        toolchain = "+x86_64-unknown-os"
+        if component == "kernel" or component == "loader":
+            toolchain = ""
+        cargo_cmd = f'cargo {toolchain} build {"--release" if target == "release" else ""}'
         run_command(cargo_cmd, cwd=component)
 
     loader_path = f"target/x86_64-unknown-uefi/{target}/loader.efi"

init/.cargo/config.toml

@@ -1,3 +1,3 @@
 [build]
-target = "x86_64-unknown-none"
+target = "x86_64-unknown-os"
 rustflags = ["-C", "link-arg=-no-pie"]

init/src/main.rs

@@ -1,15 +1 @@
-#![no_std]
+fn main() {}
-#![no_main]
-use core::{arch::global_asm, panic::PanicInfo};
-
-global_asm!(include_str!("start.s"), options(att_syntax));
-
-#[no_mangle]
-extern "C" fn main() -> ! {
-    loop {}
-}
-
-#[panic_handler]
-fn panic(_info: &PanicInfo) -> ! {
-    loop {}
-}

init/src/start.s

@@ -1,11 +0,0 @@
-.text
-
-.global _start
-_start:
-  mov $stack, %rsp
-  call main
-
-.section .bss
-.align 16
-.skip 0x10000
-stack:

kernel/src/main.rs

@@ -66,10 +66,10 @@ global_asm!(include_str!("cpu/trampoline.s"), options(att_syntax));
 global_asm!(include_str!("cpu/usermode.s"), options(att_syntax));
 
 #[cfg(debug_assertions)]
-const INIT_BINARY: &[u8] = include_bytes!("../../target/x86_64-unknown-none/debug/init");
+const INIT_BINARY: &[u8] = include_bytes!("../../target/x86_64-unknown-os/debug/init");
 
 #[cfg(not(debug_assertions))]
-const INIT_BINARY: &[u8] = include_bytes!("../../target/x86_64-unknown-none/release/init");
+const INIT_BINARY: &[u8] = include_bytes!("../../target/x86_64-unknown-os/release/init");
 
 #[no_mangle]
 extern "C" fn early_main(temp_loader_struct: *const LoaderStruct) -> ! {

lib/acpica-build/Makefile

@@ -3,7 +3,7 @@ COMPONENTS:=dispatcher events executer hardware namespace parser resources table
 CFILES:=$(foreach comp, $(COMPONENTS), $(wildcard ../acpica/source/components/$(comp)/*.c)) printf.c
 OFILES:=$(patsubst %.c, %.o, $(CFILES))
 CC:=clang
-CFLAGS:=--target=x86_64-elf -ffreestanding -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -mno-sse2 -fstack-protector-strong -O2 -I. -I../acpica/source/include -DACPI_LIBRARY -D__linux__
+CFLAGS:=--target=x86_64-elf -ffreestanding -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -mno-sse2 -fstack-protector-strong -Wall -Werror -O2 -I. -I../acpica/source/include -DACPI_LIBRARY -D__linux__
 
 libacpica.a: $(OFILES)
 	llvm-ar rcD $@ $^