Merge #263p-sh-v0.5.3c-m-sh-v0.3.5

263: Import cortex-m-semihosting and panic-semihosting into this repo r=adamgreig a=jonas-schievink

Motivation:

* Allows writing QEMU tests for `cortex-m`'s functionality that use semihosting to control QEMU. Previously these crates would pull in another cortex-m version, which doesn't work. Now they have a `path` dependency on the root crate.
* Lets us share the outline-inline-assembly setup and `cargo-xtask` in general.
* Lets us share CI and bot setup between more crates.
* 2 fewer repos to triage and keep track of (I'll transfer their issues after this is merged).

I also want to import cortex-m-rt, but I'll do that in a later PR.

CI was updated to build-test all crates with all or most feature combinations, like it did before.

Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/cortex-m-semihosting/build.rs b/cortex-m-semihosting/build.rs
new file mode 100644
index 0000000..5fc6a04
--- /dev/null
+++ b/cortex-m-semihosting/build.rs
@@ -0,0 +1,23 @@
+use std::path::PathBuf;
+use std::{env, fs};
+
+fn main() {
+    let target = env::var("TARGET").unwrap();
+    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+    let name = env::var("CARGO_PKG_NAME").unwrap();
+
+    if target.starts_with("thumbv") {
+        if env::var_os("CARGO_FEATURE_INLINE_ASM").is_none() {
+            fs::copy(
+                format!("../bin/{}.a", target),
+                out_dir.join(format!("lib{}.a", name)),
+            )
+            .unwrap();
+
+            println!("cargo:rustc-link-lib=static={}", name);
+            println!("cargo:rustc-link-search={}", out_dir.display());
+        }
+
+        println!("cargo:rustc-cfg=thumb");
+    }
+}