blob: e8511aea244923b7119931cc1573d200de457a83 [file] [log] [blame]
# SPDX-License-Identifier: Apache-2.0
set_property(TARGET linker PROPERTY devices_start_symbol "Image$$device$$Base")
find_program(CMAKE_LINKER ${CROSS_COMPILE}armlink PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
add_custom_target(armlink)
macro(toolchain_ld_base)
endmacro()
function(toolchain_ld_force_undefined_symbols)
foreach(symbol ${ARGN})
zephyr_link_libraries(--undefined=${symbol})
endforeach()
endfunction()
macro(toolchain_ld_baremetal)
endmacro()
macro(configure_linker_script linker_script_gen linker_pass_define)
set(STEERING_FILE)
set(STEERING_C)
set(STEERING_FILE_ARG)
set(STEERING_C_ARG)
set(linker_pass_define_list ${linker_pass_define})
if("LINKER_ZEPHYR_FINAL" IN_LIST linker_pass_define_list)
set(STEERING_FILE ${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.steer)
set(STEERING_C ${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.c)
set(STEERING_FILE_ARG "-DSTEERING_FILE=${STEERING_FILE}")
set(STEERING_C_ARG "-DSTEERING_C=${STEERING_C}")
endif()
add_custom_command(
OUTPUT ${linker_script_gen}
${STEERING_FILE}
${STEERING_C}
COMMAND ${CMAKE_COMMAND}
-DPASS="${linker_pass_define}"
-DMEMORY_REGIONS="$<TARGET_PROPERTY:linker,MEMORY_REGIONS>"
-DGROUPS="$<TARGET_PROPERTY:linker,GROUPS>"
-DSECTIONS="$<TARGET_PROPERTY:linker,SECTIONS>"
-DSECTION_SETTINGS="$<TARGET_PROPERTY:linker,SECTION_SETTINGS>"
-DSYMBOLS="$<TARGET_PROPERTY:linker,SYMBOLS>"
${STEERING_FILE_ARG}
${STEERING_C_ARG}
-DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/${linker_script_gen}
-P ${ZEPHYR_BASE}/cmake/linker/armlink/scatter_script.cmake
)
if("LINKER_ZEPHYR_FINAL" IN_LIST linker_pass_define_list)
add_library(armlink_steering OBJECT ${STEERING_C})
target_link_libraries(armlink_steering PRIVATE zephyr_interface)
endif()
endmacro()
function(toolchain_ld_link_elf)
cmake_parse_arguments(
TOOLCHAIN_LD_LINK_ELF # prefix of output variables
"" # list of names of the boolean arguments
"TARGET_ELF;OUTPUT_MAP;LINKER_SCRIPT" # list of names of scalar arguments
"LIBRARIES_PRE_SCRIPT;LIBRARIES_POST_SCRIPT;DEPENDENCIES" # list of names of list arguments
${ARGN} # input args to parse
)
foreach(lib ${ZEPHYR_LIBS_PROPERTY})
if(NOT ${lib} STREQUAL arch__arm__core__cortex_m)
list(APPEND ZEPHYR_LIBS_OBJECTS $<TARGET_OBJECTS:${lib}>)
list(APPEND ZEPHYR_LIBS_OBJECTS $<TARGET_PROPERTY:${lib},LINK_LIBRARIES>)
endif()
endforeach()
target_link_libraries(
${TOOLCHAIN_LD_LINK_ELF_TARGET_ELF}
${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_PRE_SCRIPT}
--scatter=${TOOLCHAIN_LD_LINK_ELF_LINKER_SCRIPT}
${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_POST_SCRIPT}
$<TARGET_OBJECTS:arch__arm__core__cortex_m>
--map --list=${TOOLCHAIN_LD_LINK_ELF_OUTPUT_MAP}
${ZEPHYR_LIBS_OBJECTS}
kernel
$<TARGET_OBJECTS:${OFFSETS_LIB}>
--library_type=microlib
--entry=$<TARGET_PROPERTY:linker,ENTRY>
"--keep=\"*.o(.init_*)\""
"--keep=\"*.o(.device_*)\""
$<TARGET_OBJECTS:armlink_steering>
--edit=${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.steer
# Resolving symbols using generated steering files will emit the warnings 6331 and 6332.
# Steering files are used because we want to be able to use `__device_end` instead of `Image$$device$$Limit`.
# Thus silence those two warnings.
--diag_suppress=6331,6332
# The scatter file is generated, and thus sometimes input sections are specified
# even though there will be no such sections found in the libraries linked.
--diag_suppress=6314
# We use empty execution sections in order to define custom symbols, such as
# __kernel_ram_x symbols, but nothing will go in those section, so silence
# the warning. Note, marking the section EMPTY causes armlink to reserve the
# address which in some cases leads to overlapping section errors.
--diag_suppress=6312
# Use of '.gnu.linkonce' sections. Those are used by ld, and # supported by armlink, albeit
# deprecated there. For current ARMClang support phase, we accept this warning, but we should
# look into changing to COMDAT groups.
--diag_suppress=6092
# Wildcard matching of keep sections, Those are needed for gnu ld, and thus we inherit the same
# keep flags and apply them to armlink. Consider adjusting keep flags per linker in future.
--diag_suppress=6319
# Match pattern for an unused section that is being removed.
--diag_suppress=6329
${TOOLCHAIN_LIBS_OBJECTS}
${TOOLCHAIN_LD_LINK_ELF_DEPENDENCIES}
)
endfunction(toolchain_ld_link_elf)
include(${ZEPHYR_BASE}/cmake/linker/ld/target_cpp.cmake)
include(${ZEPHYR_BASE}/cmake/linker/ld/target_relocation.cmake)
include(${ZEPHYR_BASE}/cmake/linker/ld/target_configure.cmake)