diff --git a/tmp/list-macros.sh b/tmp/list-macros.sh
new file mode 100755
index 0000000..b194831
--- /dev/null
+++ b/tmp/list-macros.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set =eu
+
+HEADERS=$( ls include/mbedtls/*.h )
+
+sed -n -e 's/.*#define \([a-zA-Z0-9_]*\).*/\1/p' $HEADERS \
+    | egrep -v '^(asm|inline|EMIT|_CRT_SECURE_NO_DEPRECATE)$|^MULADDC_' \
+    | sort -u > macros
+
+wc -l macros