genode/repos/base/lib/mk/ld-platform.inc
Sebastian Sumpf 2fc6cedcc0 ld: load dynamic linker at static address on Linux
* move stack area to static address at beginning of binary
* set ELF type of linker from shared to executable

fixes #3479
2019-08-21 13:25:25 +02:00

58 lines
1.3 KiB
Makefile

SHARED_LIB = yes
DIR = $(BASE_DIR)/src/lib/ldso
LIB_IS_DYNAMIC_LINKER = yes
include $(BASE_DIR)/mk/base-libs.mk
LIBS = $(BASE_LIBS)
SRC_CC = main.cc test.cc exception.cc dependency.cc debug.cc \
shared_object.cc
SRC_S = jmp_slot.s
INC_DIR += $(DIR)/include
INC_DIR += $(BASE_DIR)/src/include
LD_OPT += -Bsymbolic-functions --version-script=symbol.map
# enable use of 'check_abi'
SYMBOLS := $(BASE_DIR)/lib/symbols/ld
#
# Generate symbol map from the ABI
#
$(LIB).lib.so: symbol.map
symbol.map: $(MAKEFILE_LIST)
symbol.map: $(BASE_DIR)/lib/symbols/ld
$(MSG_CONVERT)$@
$(VERBOSE)(echo -e "{\n\tglobal:";\
sed -n "s/^\(\w\+\) .*/\t\t\1;/p" $<;\
echo -e "\tlocal: *;\n};") > $@
ifneq ($(filter linux, $(SPECS)),)
ENTRY_POINT = _start_initial_stack
LD_SCRIPT_SO = $(call select_from_repositories,src/ld/stack_area.ld) \
-T$(BASE_DIR)/src/ld/genode_rel.ld
ifneq ($(filter x86_32, $(SPECS)),)
LD_OPT += -T$(DIR)/linux-32.ld
endif
#
# set dynamic linker ELF type to executable
#
ifeq ($(called_from_lib_mk),yes)
$(LIB).lib.so.stripped: postprocess.tag
postprocess.tag: $(LIB).lib.so
$(VERBOSE)printf "\x02" | dd of=$(LIB).lib.so bs=1 seek=16 count=1 conv=notrunc
endif
else
ENTRY_POINT = _start
LD_OPT += -T$(DIR)/linker.ld
endif
vpath %.cc $(DIR)
# vi:ft=make