432bd660dc
WARNING: two things still need to be done 1. this should probably only be enabled when PAGE_SIZE is undefined, but I'm curious what other targets break now. 2. we may need a per-prebuilt way to disable this, like some of the other settings here. For prebuilts added onto a device, we can check the page alignment matches the one declared in the build configuration. Bug: 342466032 Test: manually, by changing the script to require 64 KB alignment, I was able to see its errors on new targets. Change-Id: Ic118245e64d67204bf5fa740a3e1afb7325b34f5
66 lines
3 KiB
Makefile
66 lines
3 KiB
Makefile
# Check the correctness of the prebuilt ELF files
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#
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# This check ensures that DT_SONAME matches with the filename, DT_NEEDED
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# matches the shared libraries specified in LOCAL_SHARED_LIBRARIES, and all
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# undefined symbols in the prebuilt binary can be found in one of the shared
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# libraries specified in LOCAL_SHARED_LIBRARIES.
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#
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# Inputs:
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# - LOCAL_ALLOW_UNDEFINED_SYMBOLS
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# - LOCAL_BUILT_MODULE
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# - LOCAL_IS_HOST_MODULE
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# - LOCAL_MODULE_CLASS
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# - TARGET_MAX_PAGE_SIZE_SUPPORTED
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# - TARGET_NO_BIONIC_PAGE_SIZE_MACRO
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# - intermediates
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# - my_installed_module_stem
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# - my_prebuilt_src_file
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# - my_check_elf_file_shared_lib_files
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# - my_system_shared_libraries
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ifndef LOCAL_IS_HOST_MODULE
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ifneq ($(filter $(LOCAL_MODULE_CLASS),SHARED_LIBRARIES EXECUTABLES NATIVE_TESTS),)
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check_elf_files_stamp := $(intermediates)/check_elf_files.timestamp
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$(check_elf_files_stamp): PRIVATE_SONAME := $(if $(filter $(LOCAL_MODULE_CLASS),SHARED_LIBRARIES),$(my_installed_module_stem))
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$(check_elf_files_stamp): PRIVATE_ALLOW_UNDEFINED_SYMBOLS := $(LOCAL_ALLOW_UNDEFINED_SYMBOLS)
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$(check_elf_files_stamp): PRIVATE_SYSTEM_SHARED_LIBRARIES := $(my_system_shared_libraries)
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# PRIVATE_SHARED_LIBRARY_FILES are file paths to built shared libraries.
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# In addition to $(my_check_elf_file_shared_lib_files), some file paths are
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# added by `resolve-shared-libs-for-elf-file-check` from `core/main.mk`.
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$(check_elf_files_stamp): PRIVATE_SHARED_LIBRARY_FILES := $(my_check_elf_file_shared_lib_files)
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# For different page sizes to work, we must support a larger max page size
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# as well as properly reflect page size at runtime. Limit this check, since many
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# devices set the max page size (for future proof) than actually use the
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# larger page size.
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ifeq ($(strip $(TARGET_NO_BIONIC_PAGE_SIZE_MACRO)),true)
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$(check_elf_files_stamp): PRIVATE_MAX_PAGE_SIZE_OPT := --max-page-size=$(TARGET_MAX_PAGE_SIZE_SUPPORTED)
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else
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$(check_elf_files_stamp): PRIVATE_MAX_PAGE_SIZE_OPT :=
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endif
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$(check_elf_files_stamp): $(my_prebuilt_src_file) $(my_check_elf_file_shared_lib_files) $(CHECK_ELF_FILE) $(LLVM_READOBJ)
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@echo Check prebuilt ELF binary: $<
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$(hide) mkdir -p $(dir $@)
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$(hide) rm -f $@
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$(hide) $(CHECK_ELF_FILE) \
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--skip-bad-elf-magic \
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--skip-unknown-elf-machine \
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$(PRIVATE_MAX_PAGE_SIZE_OPT) \
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$(if $(PRIVATE_SONAME),--soname $(PRIVATE_SONAME)) \
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$(foreach l,$(PRIVATE_SHARED_LIBRARY_FILES),--shared-lib $(l)) \
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$(foreach l,$(PRIVATE_SYSTEM_SHARED_LIBRARIES),--system-shared-lib $(l)) \
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$(if $(PRIVATE_ALLOW_UNDEFINED_SYMBOLS),--allow-undefined-symbols) \
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--llvm-readobj=$(LLVM_READOBJ) \
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$<
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$(hide) touch $@
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CHECK_ELF_FILES.$(check_elf_files_stamp) := 1
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ifneq ($(strip $(LOCAL_CHECK_ELF_FILES)),false)
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ifneq ($(strip $(BUILD_BROKEN_PREBUILT_ELF_FILES)),true)
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$(LOCAL_BUILT_MODULE): $(check_elf_files_stamp)
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check-elf-files: $(check_elf_files_stamp)
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endif # BUILD_BROKEN_PREBUILT_ELF_FILES
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endif # LOCAL_CHECK_ELF_FILES
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endif # SHARED_LIBRARIES, EXECUTABLES, NATIVE_TESTS
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endif # !LOCAL_IS_HOST_MODULE
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