many changes, mostly for efficiency

util/ceg/ce_back/obj_back/common.c

@@ -0,0 +1,22 @@
+#include <out.h>
+#include <em.h>
+#include "back.h"
+
+common(n)
+arith n;
+{
+	extern int Label, label_waiting;
+	register struct outname *nm = &symbol_table[Label];
+
+	if (label_waiting && (nm->on_type & S_EXT)) {
+		symbol_table[Label].on_type |= S_COM | (S_MIN+SEGBSS);
+		if (n > symbol_table[Label].on_valu) {
+			symbol_table[Label].on_valu = n;
+		}
+		label_waiting = 0;
+		return;
+	}
+	switchseg(SEGBSS);
+	dump_label();
+	bss(n);
+}