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toolchain_ARMCLANG.cmake
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toolchain_ARMCLANG.cmake
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#-------------------------------------------------------------------------------
# Copyright (c) 2020-2024, Arm Limited. All rights reserved.
# Copyright (c) 2022 Cypress Semiconductor Corporation (an Infineon company)
# or an affiliate of Cypress Semiconductor Corporation. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
#-------------------------------------------------------------------------------
cmake_minimum_required(VERSION 3.21)
SET(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER armclang)
set(CMAKE_CXX_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)
if(NOT DEFINED CMAKE_OBJCOPY)
set(CMAKE_OBJCOPY ${CROSS_COMPILE}-objcopy CACHE FILEPATH "Path to objcopy")
endif()
macro(tfm_toolchain_reset_compiler_flags)
set_property(DIRECTORY PROPERTY COMPILE_OPTIONS "")
add_compile_options(
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-Wno-ignored-optimization-argument>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-Wno-unused-command-line-argument>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-Wall>
# Don't error when the MBEDTLS_NULL_ENTROPY warning is shown
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-Wno-error=cpp>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-c>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-fdata-sections>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-ffunction-sections>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-fno-builtin>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-fshort-enums>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-fshort-wchar>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-funsigned-char>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-masm=auto>
$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-nostdlib>
$<$<COMPILE_LANGUAGE:C>:-std=c99>
$<$<COMPILE_LANGUAGE:CXX>:-std=c++11>
$<$<COMPILE_LANGUAGE:ASM>:--cpu=${CMAKE_ASM_CPU_FLAG}>
$<$<AND:$<COMPILE_LANGUAGE:C>,$<BOOL:${TFM_DEBUG_SYMBOLS}>>:-g>
$<$<AND:$<COMPILE_LANGUAGE:CXX>,$<BOOL:${TFM_DEBUG_SYMBOLS}>>:-g>
)
endmacro()
if(CONFIG_TFM_MEMORY_USAGE_QUIET)
set(MEMORY_USAGE_FLAG "")
else()
set(MEMORY_USAGE_FLAG --info=summarysizes,sizes,totals,unused,veneers)
endif()
macro(tfm_toolchain_reset_linker_flags)
set_property(DIRECTORY PROPERTY LINK_OPTIONS "")
add_link_options(
${MEMORY_USAGE_FLAG}
--strict
--symbols
--xref
$<$<AND:$<VERSION_GREATER:${TFM_ISOLATION_LEVEL},1>,$<STREQUAL:"${TEST_PSA_API}","IPC">>:--no-merge>
# 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
# Pattern only matches removed unused sections.
--diag_suppress=6329
)
endmacro()
macro(tfm_toolchain_set_processor_arch)
if (DEFINED TFM_SYSTEM_PROCESSOR)
set(CMAKE_SYSTEM_PROCESSOR ${TFM_SYSTEM_PROCESSOR})
if (TFM_SYSTEM_ARCHITECTURE STREQUAL "armv8.1-m.main")
message(WARNING "MVE is not yet supported using ARMCLANG")
string(APPEND CMAKE_SYSTEM_PROCESSOR "+nomve")
endif()
if (DEFINED TFM_SYSTEM_DSP)
if(NOT TFM_SYSTEM_DSP)
string(APPEND CMAKE_SYSTEM_PROCESSOR "+nodsp")
endif()
endif()
# ARMCLANG specifies that '+nofp' is available on following M-profile cpus:
# 'cortex-m4', 'cortex-m7', 'cortex-m33', 'cortex-m35p', 'cortex-m55' and 'cortex-m85'.
# Build fails if other M-profile cpu, such as 'cortex-m23', is added with '+nofp'.
# Explicitly list those cpu to align with ARMCLANG description.
if (NOT CONFIG_TFM_FLOAT_ABI STREQUAL "hard" AND
(TFM_SYSTEM_PROCESSOR STREQUAL "cortex-m4"
OR TFM_SYSTEM_PROCESSOR STREQUAL "cortex-m7"
OR TFM_SYSTEM_PROCESSOR STREQUAL "cortex-m33"
OR TFM_SYSTEM_PROCESSOR STREQUAL "cortex-m35p"
OR TFM_SYSTEM_PROCESSOR STREQUAL "cortex-m55"
OR TFM_SYSTEM_PROCESSOR STREQUAL "cortex-m85"))
string(APPEND CMAKE_SYSTEM_PROCESSOR "+nofp")
endif()
string(REGEX REPLACE "\\+nodsp" ".no_dsp" CMAKE_ASM_CPU_FLAG "${CMAKE_SYSTEM_PROCESSOR}")
string(REGEX REPLACE "\\+nomve" ".no_mve" CMAKE_ASM_CPU_FLAG "${CMAKE_ASM_CPU_FLAG}")
string(REGEX REPLACE "\\+nofp" ".no_fp" CMAKE_ASM_CPU_FLAG "${CMAKE_ASM_CPU_FLAG}")
else()
set(CMAKE_ASM_CPU_FLAG ${TFM_SYSTEM_ARCHITECTURE})
# Armasm uses different syntax than armclang for architecture targets
string(REGEX REPLACE "\\armv" "" CMAKE_ASM_CPU_FLAG "${CMAKE_ASM_CPU_FLAG}")
string(REGEX REPLACE "\\armv" "" CMAKE_ASM_CPU_FLAG "${CMAKE_ASM_CPU_FLAG}")
# Modifiers are additive instead of subtractive (.fp Vs .no_fp)
if (TFM_SYSTEM_DSP)
string(APPEND CMAKE_ASM_CPU_FLAG ".dsp")
endif()
if (CONFIG_TFM_FLOAT_ABI STREQUAL "hard")
string(APPEND CMAKE_ASM_CPU_FLAG ".fp")
endif()
endif()
# CMAKE_SYSTEM_ARCH is an ARMCLANG CMAKE internal variable, used to set
# compile and linker flags up until CMake 3.21 where CMP0123 was introduced:
# https://cmake.org/cmake/help/latest/policy/CMP0123.html
# This behavior is overwritten by setting CMAKE_C_FLAGS in
# tfm_toolchain_reload_compiler.
# Another use of this variable is to statisfy a requirement for ARMCLANG to
# set either the target CPU or the Architecture. This variable needs to be
# set to allow targeting architectures without a specific CPU.
set(CMAKE_SYSTEM_ARCH ${TFM_SYSTEM_ARCHITECTURE})
set(CMAKE_C_COMPILER_TARGET arm-${CROSS_COMPILE})
set(CMAKE_CXX_COMPILER_TARGET arm-${CROSS_COMPILE})
set(CMAKE_ASM_COMPILER_TARGET arm-${CROSS_COMPILE})
# MVE is currently not supported in case of armclang
if (TFM_SYSTEM_ARCHITECTURE STREQUAL "armv8.1-m.main")
string(APPEND CMAKE_SYSTEM_ARCH "+nomve")
endif()
if (DEFINED TFM_SYSTEM_DSP)
if(NOT TFM_SYSTEM_DSP)
string(APPEND CMAKE_SYSTEM_ARCH "+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_ARCH})
set(CMAKE_CXX_COMPILER_PROCESSOR_LIST ${CMAKE_SYSTEM_PROCESSOR})
set(CMAKE_CXX_COMPILER_ARCH_LIST ${CMAKE_SYSTEM_ARCH})
set(CMAKE_ASM_COMPILER_PROCESSOR_LIST ${CMAKE_SYSTEM_PROCESSOR})
set(CMAKE_ASM_COMPILER_ARCH_LIST ${CMAKE_SYSTEM_ARCH})
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_CXX_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-ASM)
__compiler_armcc(ASM)
if (CMAKE_C_COMPILER_VERSION VERSION_LESS 6.13)
message(FATAL_ERROR "Please select newer Arm compiler version starting from 6.13.")
endif()
if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 6.15 AND
CMAKE_C_COMPILER_VERSION VERSION_LESS 6.18)
message(FATAL_ERROR "Armclang 6.15~6.17 may cause MemManage fault."
" This defect has been fixed since Armclang 6.18."
" See [SDCOMP-59788] in Armclang 6.18 release note for details."
" Please use other Armclang versions instead.")
endif()
set(CMAKE_ASM_FLAGS ${CMAKE_ASM_FLAGS_INIT})
if (DEFINED TFM_SYSTEM_PROCESSOR)
set(CMAKE_C_FLAGS "-mcpu=${CMAKE_SYSTEM_PROCESSOR}")
set(CMAKE_CXX_FLAGS "-mcpu=${CMAKE_SYSTEM_PROCESSOR}")
set(CMAKE_C_LINK_FLAGS "--cpu=${CMAKE_SYSTEM_PROCESSOR}")
set(CMAKE_CXX_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 "${CMAKE_C_LINK_FLAGS}")
string(REGEX REPLACE "\\+nodsp" "" CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_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_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS}")
string(REGEX REPLACE "\\+nofp" ".no_fp" CMAKE_ASM_LINK_FLAGS "${CMAKE_ASM_LINK_FLAGS}")
string(REGEX REPLACE "\\+nomve" ".no_mve" CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS}")
string(REGEX REPLACE "\\+nomve" ".no_mve" CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS}")
string(REGEX REPLACE "\\+nomve" ".no_mve" CMAKE_ASM_LINK_FLAGS "${CMAKE_ASM_LINK_FLAGS}")
else()
set(CMAKE_C_FLAGS "-march=${CMAKE_SYSTEM_ARCH}")
set(CMAKE_CXX_FLAGS "-march=${CMAKE_SYSTEM_ARCH}")
endif()
set(BL2_COMPILER_CP_FLAG
$<$<COMPILE_LANGUAGE:C>:-mfpu=softvfp>
$<$<COMPILE_LANGUAGE:ASM>:--fpu=softvfp>
)
# As BL2 does not use hardware FPU, specify '--fpu=SoftVFP' explicitly to use software
# library functions for BL2 to override any implicit FPU option, such as '--cpu' option.
# Because the implicit hardware FPU option enforces BL2 to initialize FPU but hardware FPU
# is not actually enabled in BL2, it will cause BL2 runtime fault.
set(BL2_LINKER_CP_OPTION --fpu=SoftVFP)
set(BL1_COMPILER_CP_FLAG
$<$<COMPILE_LANGUAGE:C>:-mfpu=softvfp>
$<$<COMPILE_LANGUAGE:ASM>:--fpu=softvfp>
)
set(BL1_LINKER_CP_OPTION --fpu=SoftVFP)
if (CONFIG_TFM_FLOAT_ABI STREQUAL "hard")
set(COMPILER_CP_FLAG
$<$<COMPILE_LANGUAGE:C>:-mfloat-abi=hard>
)
if (CONFIG_TFM_ENABLE_FP)
set(COMPILER_CP_FLAG
$<$<COMPILE_LANGUAGE:C>:-mfpu=${CONFIG_TFM_FP_ARCH};-mfloat-abi=hard>
$<$<COMPILE_LANGUAGE:ASM>:--fpu=${CONFIG_TFM_FP_ARCH_ASM}>
)
# armasm and armlink have the same option "--fpu" and are both used to
# specify the target FPU architecture. So the supported FPU architecture
# names can be shared by armasm and armlink.
set(LINKER_CP_OPTION --fpu=${CONFIG_TFM_FP_ARCH_ASM})
endif()
else()
set(COMPILER_CP_FLAG
$<$<COMPILE_LANGUAGE:C>:-mfpu=softvfp>
$<$<COMPILE_LANGUAGE:ASM>:--fpu=softvfp>
)
set(LINKER_CP_OPTION --fpu=SoftVFP)
endif()
# 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:${target}_scatter>
)
add_library(${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()
add_dependencies(${target}
${target}_scatter
)
set_target_properties(${target} PROPERTIES LINK_DEPENDS $<TARGET_OBJECTS:${target}_scatter>)
target_link_libraries(${target}_scatter
platform_region_defs
psa_interface
tfm_config
)
target_compile_options(${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()
macro(target_share_symbols target)
get_target_property(TARGET_TYPE ${target} TYPE)
if (NOT TARGET_TYPE STREQUAL "EXECUTABLE")
message(FATAL_ERROR "${target} is not an executable. Symbols cannot be shared from libraries.")
endif()
foreach(symbol_file ${ARGN})
FILE(STRINGS ${symbol_file} SYMBOLS
LENGTH_MINIMUM 1
)
list(APPEND KEEP_SYMBOL_LIST ${SYMBOLS})
endforeach()
# strip all the symbols except those proveded as arguments. Long inline
# python scripts aren't ideal, but this is both portable and possibly easier
# to maintain than trying to filter files at build time in cmake.
add_custom_command(TARGET ${target}
POST_BUILD
VERBATIM
COMMAND python3 -c "from sys import argv; import re; f = open(argv[1], 'rt'); p = [x.replace('*', '.*') for x in argv[2:]]; l = [x for x in f.readlines() if re.search(r'(?=('+'$|'.join(p + ['SYMDEFS']) + r'))', x)]; f.close(); f = open(argv[1], 'wt'); f.writelines(l); f.close();" $<TARGET_FILE_DIR:${target}>/${target}${CODE_SHARING_OUTPUT_FILE_SUFFIX} ${KEEP_SYMBOL_LIST})
# Force the target to not remove the symbols if they're unused.
list(TRANSFORM KEEP_SYMBOL_LIST PREPEND --undefined=)
target_link_options(${target}
PRIVATE
${KEEP_SYMBOL_LIST}
)
# Ask armclang to produce a symdefs file that will
target_link_options(${target}
PRIVATE
--symdefs=$<TARGET_FILE_DIR:${target}>/${target}${CODE_SHARING_OUTPUT_FILE_SUFFIX}
)
endmacro()
macro(target_link_shared_code target)
get_target_property(TARGET_SOURCE_DIR ${target} SOURCE_DIR)
foreach(symbol_provider ${ARGN})
if (TARGET ${symbol_provider})
get_target_property(SYMBOL_PROVIDER_TYPE ${symbol_provider} TYPE)
if (NOT SYMBOL_PROVIDER_TYPE STREQUAL "EXECUTABLE")
message(FATAL_ERROR "${symbol_provider} is not an executable. Symbols cannot be shared from libraries.")
endif()
endif()
add_dependencies(${target} ${symbol_provider})
target_link_options(${target} PRIVATE LINKER:$<TARGET_FILE_DIR:${symbol_provider}>/${symbol_provider}${CODE_SHARING_INPUT_FILE_SUFFIX})
endforeach()
endmacro()
macro(target_strip_symbols target)
set(SYMBOL_LIST "${ARGN}")
list(TRANSFORM SYMBOL_LIST PREPEND --strip-symbol=)
# TODO we assume that arm-none-eabi-objcopy is available - since we're using
# armclang this isn't necessarily true.
add_custom_command(
TARGET ${target}
POST_BUILD
COMMAND ${CMAKE_OBJCOPY}
ARGS $<TARGET_FILE:${target}> --wildcard ${SYMBOL_LIST} $<TARGET_FILE:${target}>
)
endmacro()
macro(target_strip_symbols_from_dependency target dependency)
set(SYMBOL_LIST "${ARGN}")
list(TRANSFORM SYMBOL_LIST PREPEND --strip-symbol=)
# TODO we assume that arm-none-eabi-objcopy is available - since we're using
# armclang this isn't necessarily true.
add_custom_command(
TARGET ${target}
PRE_LINK
COMMAND ${CMAKE_OBJCOPY}
ARGS $<TARGET_FILE:${dependency}> --wildcard ${SYMBOL_LIST} $<TARGET_FILE:${dependency}>
)
endmacro()
macro(target_weaken_symbols target)
set(SYMBOL_LIST "${ARGN}")
list(TRANSFORM SYMBOL_LIST PREPEND --weaken-symbol=)
# TODO we assume that arm-none-eabi-objcopy is available - since we're using
# armclang this isn't necessarily true.
add_custom_command(
TARGET ${target}
POST_BUILD
COMMAND ${CMAKE_OBJCOPY}
ARGS $<TARGET_FILE:${target}> --wildcard ${SYMBOL_LIST} $<TARGET_FILE:${target}>
)
endmacro()
macro(target_weaken_symbols_from_dependency target dependency)
set(SYMBOL_LIST "${ARGN}")
list(TRANSFORM SYMBOL_LIST PREPEND --weaken-symbol=)
# TODO we assume that arm-none-eabi-objcopy is available - since we're using
# armclang this isn't necessarily true.
add_custom_command(
TARGET ${target}
PRE_LINK
COMMAND ${CMAKE_OBJCOPY}
ARGS $<TARGET_FILE:${dependency}> --wildcard ${SYMBOL_LIST} $<TARGET_FILE:${dependency}>
)
endmacro()