Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fab7995c authored by Yabin Cui's avatar Yabin Cui
Browse files

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
parent 8fe0fc90

core/definitions.mk

+17 −0
Original line number Diff line number Diff line
@@ -1643,6 +1643,23 @@ $(hide) $(PRIVATE_STRIP) --strip-all $< -o $@ \ 
  $(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 $@)

core/dynamic_binary.mk

+6 −1
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ endif 


$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)

$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)

$(strip_output): PRIVATE_NM := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_NM)

$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)

ifeq ($(my_strip_module),no_debuglink)

$(strip_output): PRIVATE_NO_DEBUGLINK := true
@@ -128,7 +129,11 @@ else 
$(strip_output): PRIVATE_NO_DEBUGLINK :=

endif



ifneq ($(filter true no_debuglink,$(my_strip_module)),)

ifeq ($(my_strip_module),mini-debug-info)

# Strip the binary, but keep debug frames and symbol table in a compressed .gnu_debugdata section.

$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_NM)

	$(transform-to-stripped-keep-mini-debug-info)

else ifneq ($(filter true no_debuglink,$(my_strip_module)),)

# Strip the binary

$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)

	$(transform-to-stripped)