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toolchain_ARMCLANG.cmake
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toolchain_ARMCLANG.cmake
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#-------------------------------------------------------------------------------
# Copyright (c) 2020, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
#-------------------------------------------------------------------------------
cmake_minimum_required(VERSION 3.15)
# Don't load this file if it is specified as a cmake toolchain file
if(NOT TFM_TOOLCHAIN_FILE)
message(DEPRECATION "SETTING CMAKE_TOOLCHAIN_FILE is deprecated. It has been replaced with TFM_TOOLCHAIN_FILE.")
return()
endif()
SET(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER armclang)
set(CMAKE_ASM_COMPILER armasm)
set(LINKER_VENEER_OUTPUT_FLAG --import_cmse_lib_out=)
set(COMPILER_CMSE_FLAG $<$<COMPILE_LANGUAGE:C>:-mcmse>)
# This variable name is a bit of a misnomer. The file it is set to is included
# at a particular step in the compiler initialisation. It is used here to
# configure the extensions for object files. Despite the name, it also works
# with the Ninja generator.
set(CMAKE_USER_MAKE_RULES_OVERRIDE ${CMAKE_CURRENT_LIST_DIR}/cmake/set_extensions.cmake)
macro(tfm_toolchain_reset_compiler_flags)
set_property(DIRECTORY PROPERTY COMPILE_OPTIONS "")
string(REGEX REPLACE "\\+nodsp" ".no_dsp" CMAKE_ASM_CPU_FLAG "${CMAKE_SYSTEM_PROCESSOR}")
add_compile_options(
$<$<COMPILE_LANGUAGE:C>:-Wno-ignored-optimization-argument>
$<$<COMPILE_LANGUAGE:C>:-Wno-unused-command-line-argument>
$<$<COMPILE_LANGUAGE:C>:-Wall>
# Don't error when the MBEDTLS_NULL_ENTROPY warning is shown
$<$<COMPILE_LANGUAGE:C>:-Wno-error=cpp>
$<$<COMPILE_LANGUAGE:C>:-c>
$<$<COMPILE_LANGUAGE:C>:-fdata-sections>
$<$<COMPILE_LANGUAGE:C>:-ffunction-sections>
$<$<COMPILE_LANGUAGE:C>:-fno-builtin>
$<$<COMPILE_LANGUAGE:C>:-fshort-enums>
$<$<COMPILE_LANGUAGE:C>:-fshort-wchar>
$<$<COMPILE_LANGUAGE:C>:-funsigned-char>
$<$<COMPILE_LANGUAGE:C>:-masm=auto>
$<$<COMPILE_LANGUAGE:C>:-nostdlib>
$<$<COMPILE_LANGUAGE:C>:-std=c99>
$<$<AND:$<COMPILE_LANGUAGE:C>,$<NOT:$<BOOL:${TFM_SYSTEM_FP}>>>:-mfpu=none>
$<$<AND:$<COMPILE_LANGUAGE:ASM>,$<NOT:$<BOOL:${TFM_SYSTEM_FP}>>>:--fpu=none>
$<$<COMPILE_LANGUAGE:ASM>:--cpu=${CMAKE_ASM_CPU_FLAG}>
)
endmacro()
macro(tfm_toolchain_reset_linker_flags)
set_property(DIRECTORY PROPERTY LINK_OPTIONS "")
add_link_options(
--info=summarysizes,sizes,totals,unused,veneers
--strict
--symbols
--xref
# Suppress link warnings that are consistant (and therefore hopefully
# harmless)
# https://developer.arm.com/documentation/100074/0608/linker-errors-and-warnings/list-of-the-armlink-error-and-warning-messages
# Empty region description
--diag_suppress=6312
# Ns section matches pattern
--diag_suppress=6314
# Duplicate input files
--diag_suppress=6304
$<$<NOT:$<BOOL:${TFM_SYSTEM_FP}>>:--fpu=softvfp>
)
endmacro()
macro(tfm_toolchain_set_processor_arch)
set(CMAKE_SYSTEM_PROCESSOR ${TFM_SYSTEM_PROCESSOR})
set(CMAKE_SYSTEM_ARCHITECTURE ${TFM_SYSTEM_ARCHITECTURE})
set(CMAKE_C_COMPILER_TARGET arm-${CROSS_COMPILE})
set(CMAKE_ASM_COMPILER_TARGET arm-${CROSS_COMPILE})
if (DEFINED TFM_SYSTEM_MVE)
if(NOT TFM_SYSTEM_MVE)
string(APPEND CMAKE_SYSTEM_PROCESSOR "+nomve")
endif()
endif()
if (DEFINED TFM_SYSTEM_FP)
if(NOT TFM_SYSTEM_FP)
string(APPEND CMAKE_SYSTEM_PROCESSOR "+nofp")
endif()
endif()
if (DEFINED TFM_SYSTEM_DSP)
if(NOT TFM_SYSTEM_DSP)
string(APPEND CMAKE_SYSTEM_PROCESSOR "+nodsp")
endif()
endif()
# Cmake's ARMClang support has several issues with compiler validation. To
# avoid these, we set the list of supported -mcpu and -march variables to
# the ones we intend to use so that the validation will never fail.
include(Compiler/ARMClang)
set(CMAKE_C_COMPILER_PROCESSOR_LIST ${CMAKE_SYSTEM_PROCESSOR})
set(CMAKE_C_COMPILER_ARCH_LIST ${CMAKE_SYSTEM_PROCESSOR})
set(CMAKE_ASM_COMPILER_PROCESSOR_LIST ${CMAKE_SYSTEM_PROCESSOR})
set(CMAKE_ASM_COMPILER_ARCH_LIST ${CMAKE_SYSTEM_PROCESSOR})
endmacro()
macro(tfm_toolchain_reload_compiler)
tfm_toolchain_set_processor_arch()
tfm_toolchain_reset_compiler_flags()
tfm_toolchain_reset_linker_flags()
unset(CMAKE_C_FLAGS_INIT)
unset(CMAKE_C_LINK_FLAGS)
unset(CMAKE_ASM_FLAGS_INIT)
unset(CMAKE_ASM_LINK_FLAGS)
unset(__mcpu_flag_set)
unset(__march_flag_set)
include(Compiler/ARMClang)
__compiler_armclang(C)
include(Compiler/ARMCC)
__compiler_armcc(ASM)
# Cmake's armclang support will set either mcpu or march, but march gives
# better code size so we manually set it.
set(CMAKE_C_FLAGS "-march=${CMAKE_SYSTEM_ARCHITECTURE}")
set(CMAKE_ASM_FLAGS ${CMAKE_ASM_FLAGS_INIT})
set(CMAKE_C_LINK_FLAGS "--cpu=${CMAKE_SYSTEM_PROCESSOR}")
set(CMAKE_ASM_LINK_FLAGS "--cpu=${CMAKE_SYSTEM_PROCESSOR}")
# But armlink doesn't support this +dsp syntax
string(REGEX REPLACE "\\+nodsp" "" CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS}")
string(REGEX REPLACE "\\+nodsp" "" CMAKE_ASM_LINK_FLAGS "${CMAKE_ASM_LINK_FLAGS}")
# And uses different syntax for +nofp
string(REGEX REPLACE "\\+nofp" ".no_fp" CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS}")
string(REGEX REPLACE "\\+nofp" ".no_fp" CMAKE_ASM_LINK_FLAGS "${CMAKE_ASM_LINK_FLAGS}")
string(REGEX REPLACE "\\+nomve" ".no_mve" CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS}")
string(REGEX REPLACE "\\+nomve" ".no_mve" CMAKE_ASM_LINK_FLAGS "${CMAKE_ASM_LINK_FLAGS}")
# Workaround for issues with --depend-single-line with armasm and Ninja
if (CMAKE_GENERATOR STREQUAL "Ninja")
set( CMAKE_DEPFILE_FLAGS_ASM "--depend=<OBJECT>.d")
endif()
set(CMAKE_C_FLAGS_MINSIZEREL "-Oz -DNDEBUG")
endmacro()
# Configure environment for the compiler setup run by cmake at the first
# `project` call in <tfm_root>/CMakeLists.txt. After this mandatory setup is
# done, all further compiler setup is done via tfm_toolchain_reload_compiler()
tfm_toolchain_set_processor_arch()
tfm_toolchain_reset_compiler_flags()
tfm_toolchain_reset_linker_flags()
# Behaviour for handling scatter files is so wildly divergent between compilers
# that this macro is required.
macro(target_add_scatter_file target)
target_link_options(${target}
PRIVATE
--scatter=$<TARGET_OBJECTS:${target}_scatter>
)
add_dependencies(${target}
${target}_scatter
)
add_library(${target}_scatter OBJECT)
foreach(scatter_file ${ARGN})
target_sources(${target}_scatter
PRIVATE
${scatter_file}
)
# Cmake cannot use generator expressions in the
# set_source_file_properties command, so instead we just parse the regex
# for the filename and set the property on all files, regardless of if
# the generator expression would evaluate to true or not.
string(REGEX REPLACE ".*>:(.*)>$" "\\1" SCATTER_FILE_PATH "${scatter_file}")
set_source_files_properties(${SCATTER_FILE_PATH}
PROPERTIES
LANGUAGE C
)
endforeach()
target_link_libraries(${target}_scatter
platform_region_defs
psa_interface
tfm_partition_defs
)
target_compile_options(${target}_scatter
PRIVATE
-E
-xc
)
endmacro()
macro(add_convert_to_bin_target target)
get_target_property(bin_dir ${target} RUNTIME_OUTPUT_DIRECTORY)
add_custom_target(${target}_bin
SOURCES ${bin_dir}/${target}.bin
)
add_custom_command(OUTPUT ${bin_dir}/${target}.bin
DEPENDS ${target}
COMMAND fromelf
--bincombined $<TARGET_FILE:${target}>
--output=${bin_dir}/${target}.bin
)
add_custom_target(${target}_elf
SOURCES ${bin_dir}/${target}.elf
)
add_custom_command(OUTPUT ${bin_dir}/${target}.elf
DEPENDS ${target}
COMMAND fromelf
--elf $<TARGET_FILE:${target}>
--output=${bin_dir}/${target}.elf
)
add_custom_target(${target}_hex
SOURCES ${bin_dir}/${target}.hex
)
add_custom_command(OUTPUT ${bin_dir}/${target}.hex
DEPENDS ${target}
COMMAND fromelf
--i32combined $<TARGET_FILE:${target}>
--output=${bin_dir}/${target}.hex
)
add_custom_target(${target}_binaries
ALL
DEPENDS ${target}_bin
DEPENDS ${target}_elf
DEPENDS ${target}_hex
)
endmacro()