1 files changed, 72 insertions, 0 deletions
diff --git a/src/macros.rs b/src/macros.rs
new file mode 100644
index 0000000..1ee2cf2
--- /dev/null
+++ b/src/macros.rs
@@ -0,0 +1,72 @@
+/// Macro for printing to the **host's** standard stderr
+#[macro_export]
+macro_rules! ehprint {
+    ($s:expr) => {
+        $crate::semihosting:::io:ewrite_str($s);
+    };
+    ($($arg:tt)*) => {
+        $crate::semihosting::io::ewrite_fmt(format_args!($($arg)*));
+    };
+}
+
+/// Macro for printing to the **host's** standard error, with a newline.
+#[macro_export]
+macro_rules! ehprintln {
+    () => (ehprint!("\n"));
+    ($fmt:expr) => {
+        ehprint!(concat!($fmt, "\n"));
+    };
+    ($fmt:expr, $($arg:tt)*) => {
+        ehprint!(concat!($fmt, "\n"), $($arg)*);
+    };
+}
+
+/// Macro for printing to the **host's** standard output
+#[macro_export]
+macro_rules! hprint {
+    ($s:expr) => {
+        $crate::semihosting::io::write_str($s);
+    };
+    ($($arg:tt)*) => {
+        $crate::semihosting::io::write_fmt(format_args!($($arg)*));
+    };
+}
+
+/// Macro for printing to the **host's** standard output, with a newline.
+#[macro_export]
+macro_rules! hprintln {
+    () => {
+        hprint!("\n");
+    };
+    ($fmt:expr) => {
+        hprint!(concat!($fmt, "\n"));
+    };
+    ($fmt:expr, $($arg:tt)*) => {
+        hprint!(concat!($fmt, "\n"), $($arg)*);
+    };
+}
+
+/// Macro for sending a formatted string through an ITM channel
+#[macro_export]
+macro_rules! iprint {
+    ($channel:expr, $s:expr) => {
+        $crate::itm::write_str($channel, $s);
+    };
+    ($channel:expr, $($arg:tt)*) => {
+        $crate::itm::write_fmt($channel, format_args!($($arg)*));
+    };
+}
+
+/// Macro for sending a formatted string through an ITM channel, with a newline.
+#[macro_export]
+macro_rules! iprintln {
+    ($channel:expr) => {
+        iprint!($channel, "\n");
+    };
+    ($channel:expr, $fmt:expr) => {
+        iprint!($channel, concat!($fmt, "\n"));
+    };
+    ($channel:expr, $fmt:expr, $($arg:tt)*) => {
+        iprint!($channel, concat!($fmt, "\n"), $($arg)*);
+    };
+}