Get it working with a single ld script

tools/extract-segment

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Extracts a segment from the stage1 binary which has been built from source.
+
+segment=$1
+
+pos=$(grep "^\.$segment" $B_DIR/stage1.map | awk '{print $6}')
+len=$(grep "^\.$segment" $B_DIR/stage1.map | awk '{print $3}')
+
+dd if=$B_DIR/stage1.bin of=$B_DIR/ucode/$segment.bin skip=$(($pos)) iflag=skip_bytes bs=$(($len)) count=1
+