Add Windows build.

QEMU 9 is available for Windows, but not for Ubuntu 24.04 (unless you compile it from source, and I don't want to do that).

Author: jonathanpallant

.github/workflows/build.yml

@@ -292,8 +292,8 @@ jobs:
         run: |
           cargo test --manifest-path cortex-ar/Cargo.toml
 
-  # Run some programs in QEMU
-  qemu-test:
+  # Run some programs in QEMU 8 on Linux (but not MPS3-AN536 examples)
+  qemu-test-linux:
     runs-on: ubuntu-24.04
     needs: [build-all]
     steps:
@@ -302,9 +302,26 @@ jobs:
         uses: actions/checkout@v4
       - run: ./tests.sh
 
+  # Run some programs in QEMU 9 on Windows (including MPS3-AN536 examples)
+  qemu-test-windows:
+    runs-on: windows-latest
+    needs: [build-all]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - run: choco install qemu
+      - run: ./tests.sh
+
+  # Gather all the above qemu jobs together for the purposes of getting an overall pass-fail
+  qemu-test-all:
+    runs-on: ubuntu-24.04
+    needs: [qemu-test-linux, qemu-test-windows]
+    steps:
+      - run: /bin/true
+
   # Gather all the above xxx-all jobs together for the purposes of getting an overall pass-fail
   all:
     runs-on: ubuntu-24.04
-    needs: [docs-all, build-all, fmt-all, unit-test, qemu-test] # not gating on clippy-all
+    needs: [docs-all, build-all, fmt-all, unit-test, qemu-test-all] # not gating on clippy-all
     steps:
       - run: /bin/true