7469 - first working baremetal Mu program

It doesn't _quite_ do what it should, so this is more precisely the first
_buggy_ baremetal Mu program. But the tooling works, at least.

1 files changed, 17 insertions, 0 deletions

diff --git a/baremetal/mu-init.subx b/baremetal/mu-init.subx
new file mode 100644
index 00000000..232b3b49
--- /dev/null
+++ b/baremetal/mu-init.subx
@@ -0,0 +1,17 @@
+# Initialize the minimal runtime for Mu programs.
+#
+# See translate_mu_baremetal for how this file is used.
+#
+# Mu baremetal programs start at a function called 'main' without inouts or outputs.
+
+== code
+
+# initialize stack
+bd/copy-to-ebp 0/imm32
+# no heap yet
+(main)
+
+# hang indefinitely
+{
+  eb/jump loop/disp8
+}