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, 51 insertions, 0 deletions

diff --git a/cortex-m-semihosting/src/export.rs b/cortex-m-semihosting/src/export.rs
new file mode 100644
index 0000000..c188ab0
--- /dev/null
+++ b/cortex-m-semihosting/src/export.rs
@@ -0,0 +1,51 @@
+//! IMPLEMENTATION DETAILS USED BY MACROS
+
+use core::fmt::{self, Write};
+
+use cortex_m::interrupt;
+
+use crate::hio::{self, HStderr, HStdout};
+
+static mut HSTDOUT: Option<HStdout> = None;
+
+pub fn hstdout_str(s: &str) {
+    let _result = interrupt::free(|_| unsafe {
+        if HSTDOUT.is_none() {
+            HSTDOUT = Some(hio::hstdout()?);
+        }
+
+        HSTDOUT.as_mut().unwrap().write_str(s).map_err(drop)
+    });
+}
+
+pub fn hstdout_fmt(args: fmt::Arguments) {
+    let _result = interrupt::free(|_| unsafe {
+        if HSTDOUT.is_none() {
+            HSTDOUT = Some(hio::hstdout()?);
+        }
+
+        HSTDOUT.as_mut().unwrap().write_fmt(args).map_err(drop)
+    });
+}
+
+static mut HSTDERR: Option<HStderr> = None;
+
+pub fn hstderr_str(s: &str) {
+    let _result = interrupt::free(|_| unsafe {
+        if HSTDERR.is_none() {
+            HSTDERR = Some(hio::hstderr()?);
+        }
+
+        HSTDERR.as_mut().unwrap().write_str(s).map_err(drop)
+    });
+}
+
+pub fn hstderr_fmt(args: fmt::Arguments) {
+    let _result = interrupt::free(|_| unsafe {
+        if HSTDERR.is_none() {
+            HSTDERR = Some(hio::hstderr()?);
+        }
+
+        HSTDERR.as_mut().unwrap().write_fmt(args).map_err(drop)
+    });
+}