Add strip mode mini-debug-info.
Mini-debug-info strip mode strips most debug information, but
maintains minimal debugging information similar to
https://sourceware.org/gdb/onlinedocs/gdb/MiniDebugInfo.html.
Bug: 27923447
Change-Id: I0405f0b3c33cb3cadeafbd22ce94d645c4dbe7b9
diff --git a/core/definitions.mk b/core/definitions.mk
index 5a91045..15c9df0 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1643,6 +1643,23 @@
$(if $(PRIVATE_NO_DEBUGLINK),,$(TARGET_STRIP_EXTRA))
endef
+define transform-to-stripped-keep-mini-debug-info
+@echo "target Strip (mini debug info): $(PRIVATE_MODULE) ($@)"
+@mkdir -p $(dir $@)
+$(hide) $(PRIVATE_NM) -D $< --format=posix --defined-only | awk '{ print $$1 }' | sort >$@.dynsyms
+$(hide) $(PRIVATE_NM) $< --format=posix --defined-only | awk '{ if ($$2 == "T" || $$2 == "t" || $$2 == "D") print $$1 }' | sort >$@.funcsyms
+$(hide) comm -13 $@.dynsyms $@.funcsyms >$@.keep_symbols
+$(hide) $(PRIVATE_OBJCOPY) --only-keep-debug $< $@.debug
+$(hide) $(PRIVATE_OBJCOPY) --rename-section .debug_frame=saved_debug_frame $@.debug $@.mini_debuginfo
+$(hide) $(PRIVATE_OBJCOPY) -S --remove-section .gdb_index --remove-section .comment --keep-symbols=$@.keep_symbols $@.mini_debuginfo
+$(hide) $(PRIVATE_OBJCOPY) --rename-section saved_debug_frame=.debug_frame $@.mini_debuginfo
+$(hide) $(PRIVATE_STRIP) --strip-all -R .comment $< -o $@
+$(hide) rm -f $@.mini_debuginfo.xz
+$(hide) xz $@.mini_debuginfo
+$(hide) $(PRIVATE_OBJCOPY) --add-section .gnu_debugdata=$@.mini_debuginfo.xz $@
+$(hide) rm -f $@.dynsyms $@.funcsyms $@.keep_symbols $@.debug $@.mini_debuginfo.xz
+endef
+
define transform-to-stripped-keep-symbols
@echo "target Strip (keep symbols): $(PRIVATE_MODULE) ($@)"
@mkdir -p $(dir $@)