kbuild: Add target debug_kallsyms

From: Keith Owens <[email protected]> Make it easier to generate maps for debugging kallsyms problems. debug_kallsyms is only a debugging target so no help or silent mode. Signed-off-by: Keith Owens <[email protected]> Signed-off-by: Sam Ravnborg <[email protected]>
redpig · Jul 14, 2005 · 33bc25e · 33bc25e
1 parent bd5bdd8
commit 33bc25e
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/Makefile b/Makefile
@@ -722,6 +722,16 @@ quiet_cmd_kallsyms = KSYM    $@
 # Needs to visit scripts/ before $(KALLSYMS) can be used.
 $(KALLSYMS): scripts ;
 
+# Generate some data for debugging strange kallsyms problems
+debug_kallsyms: .tmp_map$(last_kallsyms)
+
+.tmp_map%: .tmp_vmlinux% FORCE
+	($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
+
+.tmp_map3: .tmp_map2
+
+.tmp_map2: .tmp_map1
+
 endif # ifdef CONFIG_KALLSYMS
 
 # vmlinux image - including updated kernel symbols