Merge branch 'master' into interrupt

1 files changed, 29 insertions, 0 deletions

diff --git a/cortex-m-rt/examples/qemu.rs b/cortex-m-rt/examples/qemu.rs
new file mode 100644
index 0000000..e2cd895
--- /dev/null
+++ b/cortex-m-rt/examples/qemu.rs
@@ -0,0 +1,29 @@
+// #![feature(stdsimd)]
+#![no_main]
+#![no_std]
+
+extern crate cortex_m;
+
+extern crate cortex_m_rt as rt;
+extern crate cortex_m_semihosting as semihosting;
+extern crate panic_halt;
+
+use core::fmt::Write;
+use cortex_m::asm;
+use rt::entry;
+
+#[entry]
+fn main() -> ! {
+    let x = 42;
+
+    loop {
+        asm::nop();
+
+        // write something through semihosting interface
+        let mut hstdout = semihosting::hio::hstdout().unwrap();
+        write!(hstdout, "x = {}\n", x);
+
+        // exit from qemu
+        semihosting::debug::exit(semihosting::debug::EXIT_SUCCESS);
+    }
+}