c1bd559d5b
This patch introduces two new source files containing a set of functions
to manage the program header table in an ELF binary, including the ability
to load PT_LOAD segments, and apply PT_GNU_RELRO protection.
Note: the files are not used currently, this will appear in a series
of future patches that will gradually modify linker.c to use
the phdr_table_xxx functions properly.
Change-Id: Ia3d4c1ff5fc3e265d8258b64b492f4e643f51bdc
72 lines
1.9 KiB
Makefile
72 lines
1.9 KiB
Makefile
LOCAL_PATH:= $(call my-dir)
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include $(CLEAR_VARS)
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LOCAL_SRC_FILES:= \
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arch/$(TARGET_ARCH)/begin.S \
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linker.c \
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linker_environ.c \
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linker_format.c \
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linker_phdr.c \
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rt.c \
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dlfcn.c \
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debugger.c
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LOCAL_LDFLAGS := -shared
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LOCAL_CFLAGS += -fno-stack-protector \
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-Wstrict-overflow=5 \
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-fvisibility=hidden
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# Set LINKER_DEBUG to either 1 or 0
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#
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LOCAL_CFLAGS += -DLINKER_DEBUG=0
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# we need to access the Bionic private header <bionic_tls.h>
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# in the linker; duplicate the HAVE_ARM_TLS_REGISTER definition
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# from the libc build
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ifeq ($(TARGET_ARCH)-$(ARCH_ARM_HAVE_TLS_REGISTER),arm-true)
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LOCAL_CFLAGS += -DHAVE_ARM_TLS_REGISTER
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endif
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LOCAL_CFLAGS += \
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-I$(LOCAL_PATH)/../libc/private \
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-I$(LOCAL_PATH)/../libc/arch-$(TARGET_ARCH)/bionic
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ifeq ($(TARGET_ARCH),arm)
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LOCAL_CFLAGS += -DANDROID_ARM_LINKER
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else
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ifeq ($(TARGET_ARCH),x86)
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LOCAL_CFLAGS += -DANDROID_X86_LINKER
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endif
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endif
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LOCAL_MODULE:= linker
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LOCAL_STATIC_LIBRARIES := libc_nomalloc
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#LOCAL_FORCE_STATIC_EXECUTABLE := true # not necessary when not including BUILD_EXECUTABLE
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#
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# include $(BUILD_EXECUTABLE)
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#
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# Instead of including $(BUILD_EXECUTABLE), we execute the steps to create an executable by
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# hand, as we want to insert an extra step that is not supported by the build system, and
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# is probably specific the linker only, so there's no need to modify the build system for
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# the purpose.
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LOCAL_MODULE_CLASS := EXECUTABLES
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LOCAL_MODULE_SUFFIX := $(TARGET_EXECUTABLE_SUFFIX)
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# we don't want crtbegin.o (because we have begin.o), so unset it
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# just for this module
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LOCAL_NO_CRT := true
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include $(BUILD_SYSTEM)/dynamic_binary.mk
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$(linked_module): $(TARGET_CRTBEGIN_STATIC_O) $(all_objects) $(all_libraries) $(TARGET_CRTEND_O)
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$(transform-o-to-static-executable)
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@echo "target PrefixSymbols: $(PRIVATE_MODULE) ($@)"
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$(hide) $(TARGET_OBJCOPY) --prefix-symbols=__dl_ $@
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#
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# end of BUILD_EXECUTABLE hack
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#
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