Add tool for checking lwlink map files

Lists empty holes and overlaps in map files generated
by lwlink (from LWTOOLS).

Kernel/tools/lw-checkmap Kernel/fuzix.map

Signed-off-by: Tormod Volden <debian.tormod@gmail.com>

diff --git a/Kernel/tools/lw-checkmap b/Kernel/tools/lw-checkmap
new file mode 100755 (executable)
index 0000000..f98a552
--- /dev/null
+++ b/Kernel/tools/lw-checkmap
@@ -0,0 +1,8 @@
+:
+# Simple check of map file generated by lwlink (LWTOOLS)
+grep ^Section "$1" | sort -k5 | awk '{
+       st=strtonum("0x"$6);
+       if (en<st) {printf "free 0x%x-0x%x = %i\n",en,st,st-en};
+       if (en>st) {printf "overlap at 0x%x-0x%x!\n",st,en};
+       en=st+strtonum("0x"$8);
+}'