update gcc-arm-none-eabi shim

gcc-arm-none-eabi/gcc_arm_none_eabi/__init__.py

@@ -0,0 +1,27 @@
+import os
+import sys
+
+TOOLCHAIN_DIR = os.path.join(os.path.dirname(__file__), "toolchain")
+
+
+def _run(name):
+  binary = os.path.join(TOOLCHAIN_DIR, "bin", name)
+  os.execvp(binary, [binary] + sys.argv[1:])
+
+
+def _run_gcc():
+  _run("arm-none-eabi-gcc")
+
+
+def _run_objcopy():
+  _run("arm-none-eabi-objcopy")
+
+
+def _run_size():
+  _run("arm-none-eabi-size")
+
+
+def smoketest():
+  import subprocess
+  gcc = os.path.join(TOOLCHAIN_DIR, "bin", "arm-none-eabi-gcc")
+  subprocess.run([gcc, "--version"], check=True)