Merge pull request #208 from rust-osdev/dev

misc: various improvements

Author: phip1611

Cargo.lock

@@ -1,9 +1,8 @@
 //! Parsing the Multiboot information. Glue code for the [`multiboot`] code.
 
 use anyhow::anyhow;
+use core::ptr::addr_of_mut;
 use core::slice;
-pub use multiboot::information::ModuleIter;
-pub use multiboot::information::Multiboot as Mbi;
 use multiboot::information::{MemoryManagement, Multiboot, PAddr, SIGNATURE_EAX};
 
 static mut MEMORY_MANAGEMENT: Mem = Mem;
@@ -14,7 +13,8 @@ pub fn get_mbi<'a>(magic: u32, ptr: u32) -> anyhow::Result<Multiboot<'a, 'static
     if magic != SIGNATURE_EAX {
         return Err(anyhow!("Unknown Multiboot signature {magic:x}"));
     }
-    unsafe { Multiboot::from_ptr(ptr as u64, &mut MEMORY_MANAGEMENT) }.ok_or(anyhow!(
+    let mmgmt: &mut dyn MemoryManagement = unsafe { &mut *addr_of_mut!(MEMORY_MANAGEMENT) };
+    unsafe { Multiboot::from_ptr(ptr as u64, mmgmt) }.ok_or(anyhow!(
         "Can't read Multiboot boot information from pointer"
     ))
 }

integration-test/bins/multiboot2_chainloader/src/multiboot.rs

@@ -23,7 +23,7 @@ fn basic_sanity_checks(mbi: &BootInformation) -> anyhow::Result<()> {
         .map_err(anyhow::Error::msg)?
         .cmdline()
         .map_err(anyhow::Error::msg)?;
-    assert_eq!(bootloader_name, "GRUB 2.06");
+    assert!(bootloader_name.starts_with("GRUB 2."));
     assert_eq!(cmdline, "some commandline arguments");
 
     Ok(())

integration-test/bins/multiboot2_payload/src/verify/grub.rs

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "nightly-2023-06-22"
+channel = "nightly-2024-03-31" # rustc 1.79-nightly
 profile = "default"
 components = [
     "rust-src",

integration-test/bins/rust-toolchain.toml

@@ -1,6 +1,6 @@
 {
     "llvm-target": "i686-unknown-none",
-    "data-layout": "e-m:e-i32:32-f80:128-n8:16:32-S128-p:32:32",
+    "data-layout": "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i128:128-f64:32:64-f80:32-n8:16:32-S128",
     "arch": "x86",
     "target-endian": "little",
     "target-pointer-width": "32",

integration-test/bins/x86-unknown-none.json

@@ -1,14 +1,14 @@
 {
     "nixpkgs": {
-        "branch": "nixos-23.05",
+        "branch": "nixos-23.11",
         "description": "Nix Packages collection",
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ad157fe26e74211e7dde0456cb3fd9ab78b6e552",
-        "sha256": "0l5gimzlbzq1svw48p4h3wf24ry21icl9198jk5x4xqvs6k2gffx",
+        "rev": "219951b495fc2eac67b1456824cc1ec1fd2ee659",
+        "sha256": "065jy7qivlbdqmbvd7r9h97b23f21axmc4r7sqmq2h0j82rmymxv",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/ad157fe26e74211e7dde0456cb3fd9ab78b6e552.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/219951b495fc2eac67b1456824cc1ec1fd2ee659.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }

integration-test/nix/sources.json

@@ -25,4 +25,5 @@ cp grub.cfg .vol/boot/grub
 cp "$MULTIBOOT2_PAYLOAD_PATH" .vol
 
 # Create a GRUB image with the files in ".vol" being embedded.
-grub-mkrescue -o "grub_boot.img" ".vol" 2>/dev/null
+echo "Creating bootable image..."
+grub-mkrescue -o "grub_boot.img" ".vol"

integration-test/tests/multiboot2/build_img.sh

@@ -26,7 +26,7 @@ readme = "README.md"
 homepage = "https://github.com/rust-osdev/multiboot2-header"
 repository = "https://github.com/rust-osdev/multiboot2"
 documentation = "https://docs.rs/multiboot2-header"
-rust-version = "1.68"
+rust-version = "1.69"
 
 [[example]]
 name = "minimal"

multiboot2-header/Cargo.toml

@@ -1,5 +1,10 @@
 # CHANGELOG for crate `multiboot2-header`
 
+## Unreleased
+
+- added `EndHeaderTag::default()`
+- MSRV is 1.69
+
 ## 0.3.2 (2023-11-30)
 
 - **BREAKING** bumped `multiboot2` dependency to `v0.19.0`
@@ -13,7 +18,7 @@
 
 ## 0.3.0 (2023-06-23)
 
-- **BREAKING** MSRV is 1.68.0
+- **BREAKING** MSRV is 1.68.0 (UPDATE: This is actually 1.69.)
 - **BREAKING** renamed the `std` feature to `alloc`
 - **BREAKING** bumped `multiboot2` dependency to `v0.16.0`
 - **BREAKING** renamed `MULTIBOOT2_HEADER_MAGIC` to `MAGIC`
@@ -22,20 +27,23 @@
 - **BREAKING** `HeaderBuilder::build` now returns a value of type `HeaderBytes`
   The old builder could produce misaligned structures.
 - added the optional `unstable` feature (requires nightly)
-  - implement `core::error::Error` for `LoadError`
+    - implement `core::error::Error` for `LoadError`
 
 ## 0.2.0 (2022-05-03)
 
 - **BREAKING** renamed `EntryHeaderTag` to `EntryAddressHeaderTag`
-- **BREAKING** some paths changed from `multiboot2_header::header` to `multiboot2_header::builder`
-   -> thus, import paths are much more logically now
+- **BREAKING** some paths changed from `multiboot2_header::header`
+  to `multiboot2_header::builder`
+  -> thus, import paths are much more logically now
 - internal code improvements
 
 ## 0.1.1 (2022-05-02)
 
 - fixed a bug that prevented the usage of the crate in `no_std` environments
-- added a new default `builder`-feature to Cargo which requires the `alloc`-crate
-  (this feature can be disabled which will also remove the dependency to the `alloc` crate)
+- added a new default `builder`-feature to Cargo which requires the `alloc`
+  -crate
+  (this feature can be disabled which will also remove the dependency to
+  the `alloc` crate)
 
 ## 0.1.0 (2021-10-08)
 

multiboot2-header/Changelog.md

@@ -12,6 +12,12 @@ pub struct EndHeaderTag {
     size: u32,
 }
 
+impl Default for EndHeaderTag {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl EndHeaderTag {
     pub const fn new() -> Self {
         EndHeaderTag {