diff options
Diffstat (limited to 'xtask/src/lib.rs')
| -rw-r--r-- | xtask/src/lib.rs | 195 |
1 files changed, 1 insertions, 194 deletions
diff --git a/xtask/src/lib.rs b/xtask/src/lib.rs index f6a57b3..9d96686 100644 --- a/xtask/src/lib.rs +++ b/xtask/src/lib.rs @@ -1,117 +1,8 @@ //! `cargo xtask` automation. //! //! Please refer to <https://github.com/matklad/cargo-xtask/> for an explanation of the concept. -//! -//! Also see the docs in `asm.rs`. - -use std::collections::BTreeMap; -use std::env::current_dir; -use std::fs::{self, File}; -use std::process::{Command, Stdio}; - -fn toolchain() -> String { - fs::read_to_string("asm-toolchain") - .unwrap() - .trim() - .to_string() -} - -fn rustc() -> Command { - let mut cmd = Command::new("rustc"); - cmd.arg(format!("+{}", toolchain())); - cmd -} - -fn assemble_really(target: &str, cfgs: &[&str], plugin_lto: bool) { - let mut cmd = rustc(); - - // Set the codegen target. - cmd.arg("--target").arg(target); - // Set all the `--cfg` directives for the target. - cmd.args(cfgs.iter().map(|cfg| format!("--cfg={}", cfg))); - - // We want some level of debuginfo to allow unwinding through the functions. - cmd.arg("-g"); - // We always optimize the assembly shims. There's not really any reason not to. - cmd.arg("-O"); - - // We use LTO on the archive to ensure the (unused) panic handler is removed, preventing - // a linker error when the archives are linked into final crates with two panic handlers. - cmd.arg("-Clto=yes"); - - // rustc will usually add frame pointers by default to aid with debugging, but that is a high - // overhead for the tiny assembly routines. - cmd.arg("-Cforce-frame-pointers=no"); - // We don't want any system-specific paths to show up since we ship the result to other users. - // Add `--remap-path-prefix $(pwd)=.`. - let mut dir = current_dir().unwrap().as_os_str().to_os_string(); - dir.push("=."); - cmd.arg("--remap-path-prefix").arg(dir); - - // We let rustc build a single object file, not a staticlib, since the latter pulls in loads of - // code that will never be used (`compiler_builtins` and `core::fmt`, etc.). We build the static - // archive by hand after compiling. - cmd.arg("--emit=obj"); - - if plugin_lto { - // Make artifacts compatible with Linker-Plugin LTO (and incompatible with everything else). - cmd.arg("-Clinker-plugin-lto"); - } - - let file_stub = if plugin_lto { - format!("{}-lto", target) - } else { - target.to_string() - }; - - let obj_file = format!("bin/{}.o", file_stub); - - // Pass output and input file. - cmd.arg("-o").arg(&obj_file); - cmd.arg("asm/lib.rs"); - - println!("{:?}", cmd); - let status = cmd.status().unwrap(); - assert!(status.success()); - - // Archive `target.o` -> `bin/target.a`. - let mut builder = ar::Builder::new(File::create(format!("bin/{}.a", file_stub)).unwrap()); - - // Use `append`, not `append_path`, to avoid adding any filesystem metadata (modification times, - // etc.). - let file = fs::read(&obj_file).unwrap(); - builder - .append( - &ar::Header::new(obj_file.as_bytes().to_vec(), file.len() as u64), - &*file, - ) - .unwrap(); - - fs::remove_file(&obj_file).unwrap(); -} - -fn assemble(target: &str, cfgs: &[&str]) { - assemble_really(target, cfgs, false); - assemble_really(target, cfgs, true); -} - -// `--target` -> `--cfg` list (mirrors what `build.rs` does). -static TARGETS: &[(&str, &[&str])] = &[ - ("thumbv6m-none-eabi", &[]), - ("thumbv7m-none-eabi", &["armv7m"]), - ("thumbv7em-none-eabi", &["armv7m", "armv7em"]), - ("thumbv7em-none-eabihf", &["armv7m", "armv7em", "has_fpu"]), - ("thumbv8m.base-none-eabi", &["armv8m", "armv8m_base"]), - ( - "thumbv8m.main-none-eabi", - &["armv7m", "armv8m", "armv8m_main"], - ), - ( - "thumbv8m.main-none-eabihf", - &["armv7m", "armv8m", "armv8m_main", "has_fpu"], - ), -]; +use std::process::Command; pub fn install_targets(targets: &mut dyn Iterator<Item = &str>, toolchain: Option<&str>) { let mut rustup = Command::new("rustup"); @@ -125,90 +16,6 @@ pub fn install_targets(targets: &mut dyn Iterator<Item = &str>, toolchain: Optio assert!(status.success(), "rustup command failed: {:?}", rustup); } -pub fn assemble_blobs() { - let mut cmd = rustc(); - cmd.arg("-V"); - cmd.stdout(Stdio::null()); - let status = cmd.status().unwrap(); - let toolchain = toolchain(); - - if !status.success() { - println!( - "asm toolchain {} does not seem to be installed. installing it now.", - toolchain - ); - - let mut rustup = Command::new("rustup"); - let status = rustup.arg("install").arg(&toolchain).status().unwrap(); - assert!(status.success(), "rustup command failed: {:?}", rustup); - } - - install_targets( - &mut TARGETS.iter().map(|(target, _)| *target), - Some(&*toolchain), - ); - - for (target, cfgs) in TARGETS { - println!("building artifacts for {}", target); - assemble(target, cfgs); - } -} - -pub fn check_blobs() { - // Load each `.a` file in `bin` into memory. - let mut files_before = BTreeMap::new(); - for entry in fs::read_dir("bin").unwrap() { - let entry = entry.unwrap(); - if entry.path().extension().unwrap() == "a" { - files_before.insert( - entry - .path() - .file_name() - .unwrap() - .to_str() - .unwrap() - .to_string(), - fs::read(entry.path()).unwrap(), - ); - } - } - - assemble_blobs(); - - let mut files_after = BTreeMap::new(); - for entry in fs::read_dir("bin").unwrap() { - let entry = entry.unwrap(); - if entry.path().extension().unwrap() == "a" { - files_after.insert( - entry - .path() - .file_name() - .unwrap() - .to_str() - .unwrap() - .to_string(), - fs::read(entry.path()).unwrap(), - ); - } - } - - // Ensure they contain the same files. - let before = files_before.keys().collect::<Vec<_>>(); - let after = files_after.keys().collect::<Vec<_>>(); - assert_eq!(before, after); - - for ((file, before), (_, after)) in files_before.iter().zip(files_after.iter()) { - if before != after { - panic!( - "{} is not up-to-date, please run `cargo xtask assemble`", - file - ); - } - } - - println!("Blobs identical."); -} - // Check that serde and PartialOrd works with VectActive pub fn check_host_side() { use cortex_m::peripheral::{itm::LocalTimestampOptions, scb::VectActive}; |