[Xen-devel] [PATCH] coverage: GCC coverage libfdt Makefile fix

[Viktor Mitin <viktor.mitin.19@xxxxxxxxx>]

The patch resolves 'xencov' crashes in case of Aarch64.

All the .init.* sections are stripped after boot,
it means that anything in .init.data cannot be accessed anymore.
The build system explicitly compiles any .init binary without gcov option.
The problem is coming from libfdt.
The entire library is moved to .init using:
$(OBJCOPY) $(foreach s,$(SECTIONS),--rename-section .$(s)=.init.$(s)) $< $@
So we need to tell the top Makefile to filter out libfdt.

Reported-by: Viktor Mitin <viktor.mitin.19@xxxxxxxxx>
Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
Tested-by: Viktor Mitin <viktor.mitin.19@xxxxxxxxx>
---
 xen/common/libfdt/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/common/libfdt/Makefile b/xen/common/libfdt/Makefile
index d81f54b6b8..c075bbf546 100644
--- a/xen/common/libfdt/Makefile
+++ b/xen/common/libfdt/Makefile
@@ -3,6 +3,7 @@ include Makefile.libfdt
 SECTIONS := text data $(SPECIAL_DATA_SECTIONS)
 
 obj-y += libfdt.o
+nocov-y += libfdt.o
 
 CFLAGS += -I$(BASEDIR)/include/xen/libfdt/
 
-- 
2.17.1


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