1. 根目录:
2. scripts
3. xen-hypercalls.sh

#!/bin/sh
out="$1"
shift
in="$@"

for i in $in; do
	eval $CPP $LINUXINCLUDE -dD -imacros "$i" -x c /dev/null
done | \
awk '$1 == "#define" && $2 ~ /__HYPERVISOR_[a-z][a-z_0-9]*/ { v[$3] = $2 }
	END {   print "/* auto-generated by scripts/xen-hypercall.sh */"
		for (i in v) if (!(v[i] in v))
			print "HYPERCALL("substr(v[i], 14)")"}' | sort -u >$out