120 lines
4.9 KiB
CMake
120 lines
4.9 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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set_property(TARGET linker PROPERTY devices_start_symbol "Image$$device$$Base")
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find_program(CMAKE_LINKER ${CROSS_COMPILE}armlink PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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add_custom_target(armlink)
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macro(toolchain_ld_base)
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endmacro()
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function(toolchain_ld_force_undefined_symbols)
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foreach(symbol ${ARGN})
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zephyr_link_libraries(--undefined=${symbol})
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endforeach()
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endfunction()
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macro(toolchain_ld_baremetal)
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endmacro()
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macro(configure_linker_script linker_script_gen linker_pass_define)
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set(STEERING_FILE)
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set(STEERING_C)
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set(STEERING_FILE_ARG)
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set(STEERING_C_ARG)
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set(linker_pass_define_list ${linker_pass_define})
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if("LINKER_ZEPHYR_FINAL" IN_LIST linker_pass_define_list)
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set(STEERING_FILE ${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.steer)
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set(STEERING_C ${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.c)
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set(STEERING_FILE_ARG "-DSTEERING_FILE=${STEERING_FILE}")
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set(STEERING_C_ARG "-DSTEERING_C=${STEERING_C}")
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endif()
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add_custom_command(
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OUTPUT ${linker_script_gen}
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${STEERING_FILE}
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${STEERING_C}
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COMMAND ${CMAKE_COMMAND}
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-DPASS="${linker_pass_define}"
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-DMEMORY_REGIONS="$<TARGET_PROPERTY:linker,MEMORY_REGIONS>"
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-DGROUPS="$<TARGET_PROPERTY:linker,GROUPS>"
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-DSECTIONS="$<TARGET_PROPERTY:linker,SECTIONS>"
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-DSECTION_SETTINGS="$<TARGET_PROPERTY:linker,SECTION_SETTINGS>"
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-DSYMBOLS="$<TARGET_PROPERTY:linker,SYMBOLS>"
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${STEERING_FILE_ARG}
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${STEERING_C_ARG}
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-DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/${linker_script_gen}
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-P ${ZEPHYR_BASE}/cmake/linker/armlink/scatter_script.cmake
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)
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if("LINKER_ZEPHYR_FINAL" IN_LIST linker_pass_define_list)
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add_library(armlink_steering OBJECT ${STEERING_C})
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target_link_libraries(armlink_steering PRIVATE zephyr_interface)
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endif()
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endmacro()
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function(toolchain_ld_link_elf)
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cmake_parse_arguments(
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TOOLCHAIN_LD_LINK_ELF # prefix of output variables
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"" # list of names of the boolean arguments
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"TARGET_ELF;OUTPUT_MAP;LINKER_SCRIPT" # list of names of scalar arguments
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"LIBRARIES_PRE_SCRIPT;LIBRARIES_POST_SCRIPT;DEPENDENCIES" # list of names of list arguments
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${ARGN} # input args to parse
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)
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foreach(lib ${ZEPHYR_LIBS_PROPERTY})
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if(NOT ${lib} STREQUAL arch__arm__core__aarch32__cortex_m)
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list(APPEND ZEPHYR_LIBS_OBJECTS $<TARGET_OBJECTS:${lib}>)
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list(APPEND ZEPHYR_LIBS_OBJECTS $<TARGET_PROPERTY:${lib},LINK_LIBRARIES>)
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endif()
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endforeach()
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target_link_libraries(
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${TOOLCHAIN_LD_LINK_ELF_TARGET_ELF}
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${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_PRE_SCRIPT}
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--scatter=${TOOLCHAIN_LD_LINK_ELF_LINKER_SCRIPT}
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${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_POST_SCRIPT}
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$<TARGET_OBJECTS:arch__arm__core__aarch32__cortex_m>
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--map --list=${TOOLCHAIN_LD_LINK_ELF_OUTPUT_MAP}
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${ZEPHYR_LIBS_OBJECTS}
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kernel
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$<TARGET_OBJECTS:${OFFSETS_LIB}>
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--library_type=microlib
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--entry=$<TARGET_PROPERTY:linker,ENTRY>
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"--keep=\"*.o(.init_*)\""
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"--keep=\"*.o(.device_*)\""
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$<TARGET_OBJECTS:armlink_steering>
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--edit=${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.steer
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# Resolving symbols using generated steering files will emit the warnings 6331 and 6332.
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# Steering files are used because we want to be able to use `__device_end` instead of `Image$$device$$Limit`.
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# Thus silence those two warnings.
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--diag_suppress=6331,6332
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# The scatter file is generated, and thus sometimes input sections are specified
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# even though there will be no such sections found in the libraries linked.
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--diag_suppress=6314
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# We use empty execution sections in order to define custom symbols, such as
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# __kernel_ram_x symbols, but nothing will go in those section, so silence
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# the warning. Note, marking the section EMPTY causes armlink to reserve the
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# address which in some cases leads to overlapping section errors.
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--diag_suppress=6312
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# Use of '.gnu.linkonce' sections. Those are used by ld, and # supported by armlink, albeit
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# deprecated there. For current ARMClang support phase, we accept this warning, but we should
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# look into changing to COMDAT groups.
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--diag_suppress=6092
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# Wildcard matching of keep sections, Those are needed for gnu ld, and thus we inherit the same
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# keep flags and apply them to armlink. Consider adjusting keep flags per linker in future.
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--diag_suppress=6319
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# Match pattern for an unused section that is being removed.
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--diag_suppress=6329
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${TOOLCHAIN_LIBS_OBJECTS}
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${TOOLCHAIN_LD_LINK_ELF_DEPENDENCIES}
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)
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endfunction(toolchain_ld_link_elf)
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include(${ZEPHYR_BASE}/cmake/linker/ld/target_cpp.cmake)
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include(${ZEPHYR_BASE}/cmake/linker/ld/target_relocation.cmake)
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include(${ZEPHYR_BASE}/cmake/linker/ld/target_configure.cmake)
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