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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-11-18 19:33:51 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-11-18 19:33:51 +1100
commitc38c2e8d08e03e905b72334747a9f8795f3526c2 (patch)
tree94a7e5ec6124998eee1d1a27577370b03304c4e6 /Makefile.rules
parent94796c825b0708c8c86e7135d60c435fc3fd00a5 (diff)
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Add symbolic backtraces and expose skiboot map to Linux
We use a double link technique, doing a first pass with a .o containing a dummy symbol map, then re-linking with a new .o Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Makefile.rules')
-rw-r--r--Makefile.rules3
1 files changed, 3 insertions, 0 deletions
diff --git a/Makefile.rules b/Makefile.rules
index 200abcb..3014c81 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -51,3 +51,6 @@ endef
%.lds : %.lds.S
$(call Q,CC, $(CC) $(CPPFLAGS) -P -E $< -o $@, $@)
+
+%.map: %.elf
+ $(call Q,NM, $(NM) -n $< | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)' > $@, $@)