diff options
Diffstat (limited to 'linker/Android.mk')
| -rw-r--r-- | linker/Android.mk | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/linker/Android.mk b/linker/Android.mk new file mode 100644 index 0000000..48141be --- /dev/null +++ b/linker/Android.mk @@ -0,0 +1,75 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + arch/$(TARGET_ARCH)/begin.S \ + linker.c \ + rt.c \ + dlfcn.c \ + debugger.c \ + ba.c + +LINKER_TEXT_BASE := 0xB0000100 + +# The maximum size set aside for the linker, from +# LINKER_TEXT_BASE rounded down to a megabyte. +LINKER_AREA_SIZE := 0x01000000 + +LOCAL_LDFLAGS := -Wl,-Ttext,$(LINKER_TEXT_BASE) + +LOCAL_CFLAGS += -DPRELINK +LOCAL_CFLAGS += -DLINKER_TEXT_BASE=$(LINKER_TEXT_BASE) +LOCAL_CFLAGS += -DLINKER_AREA_SIZE=$(LINKER_AREA_SIZE) + +# we need to access the Bionic private header <bionic_tls.h> +# in the linker +LOCAL_CFLAGS += -I$(LOCAL_PATH)/../libc/private + +ifeq ($(TARGET_ARCH),arm) +LOCAL_CFLAGS += -DANDROID_ARM_LINKER +else + ifeq ($(TARGET_ARCH),x86) + LOCAL_CFLAGS += -DANDROID_X86_LINKER + else + $(error Unsupported TARGET_ARCH $(TARGET_ARCH)) + endif +endif + +LOCAL_MODULE:= linker + +LOCAL_STATIC_LIBRARIES := libcutils libc + +#LOCAL_FORCE_STATIC_EXECUTABLE := true # not necessary when not including BUILD_EXECUTABLE + +# +# include $(BUILD_EXECUTABLE) +# +# Instead of including $(BUILD_EXECUTABLE), we execute the steps to create an executable by +# hand, as we want to insert an extra step that is not supported by the build system, and +# is probably specific the linker only, so there's no need to modify the build system for +# the purpose. + +LOCAL_MODULE_CLASS := EXECUTABLES +LOCAL_MODULE_SUFFIX := $(TARGET_EXECUTABLE_SUFFIX) + +# Executables are not prelinked. +LOCAL_PRELINK_MODULE := false + +include $(BUILD_SYSTEM)/dynamic_binary.mk + +$(linked_module): $(TARGET_CRTBEGIN_STATIC_O) $(all_objects) $(all_libraries) $(TARGET_CRTEND_O) + $(transform-o-to-static-executable) + @echo "target PrefixSymbols: $(PRIVATE_MODULE) ($@)" + $(hide) $(TARGET_OBJCOPY) --prefix-symbols=__dl_ $@ + +# +# end of BUILD_EXECUTABLE hack +# + +# we don't want crtbegin.o (because we have begin.o), so unset it +# just for this module +$(LOCAL_BUILT_MODULE): TARGET_CRTBEGIN_STATIC_O := +# This line is not strictly necessary because the dynamic linker is built +# as a static executable, but it won't hurt if in the future we start +# building the linker as a dynamic one. +$(LOCAL_BUILT_MODULE): TARGET_CRTBEGIN_DYNAMIC_O := |