RIOT/cpu/cortexm_common/Makefile.features

FEATURES_PROVIDED += arch_32bit
FEATURES_PROVIDED += arch_arm
FEATURES_PROVIDED += cortexm_svc
FEATURES_PROVIDED += cpp
FEATURES_PROVIDED += cpu_check_address
FEATURES_PROVIDED += cpu_core_cortexm
FEATURES_PROVIDED += dbgpin
FEATURES_PROVIDED += libstdcpp
FEATURES_PROVIDED += newlib
FEATURES_PROVIDED += periph_flashpage_aux
FEATURES_PROVIDED += periph_pm
FEATURES_PROVIDED += puf_sram
FEATURES_PROVIDED += picolibc
FEATURES_PROVIDED += ssp

# cortex-m33, cortex-m4f and cortex-m7 provide FPU support
ifneq (,$(filter $(CPU_CORE),cortex-m33 cortex-m4f cortex-m7))
  FEATURES_PROVIDED += cortexm_fpu
endif

# Set CPU_ARCH depending on the CPU_CORE
#
# RUST_TARGET is only used when building Rust code; any users need to require
# the `rust_target` feature to esnure things are checked properly.
ifeq ($(CPU_CORE),cortex-m0)
  CPU_ARCH := armv6m
  RUST_TARGET = thumbv6m-none-eabi
else ifeq ($(CPU_CORE),cortex-m0plus)
  CPU_ARCH := armv6m
  RUST_TARGET = thumbv6m-none-eabi
else ifeq ($(CPU_CORE),cortex-m23)
  CPU_ARCH := armv8m
  #RUST_TARGET = thumbv8m.base-none-eabi
else ifeq ($(CPU_CORE),cortex-m3)
  CPU_ARCH := armv7m
  RUST_TARGET = thumbv7m-none-eabi
else ifeq ($(CPU_CORE),cortex-m33)
  CPU_ARCH := armv8m
  FEATURES_PROVIDED += cortexm_stack_limit
  #RUST_TARGET = thumbv8m.main-none-eabi
else ifeq ($(CPU_CORE),cortex-m4)
  CPU_ARCH := armv7m
  RUST_TARGET = thumbv7em-none-eabi
else ifeq ($(CPU_CORE),cortex-m4f)
  CPU_ARCH := armv7m
  RUST_TARGET = thumbv7em-none-eabihf
else ifeq ($(CPU_CORE),cortex-m7)
  CPU_ARCH := armv7m
else
  $(error Unknown cortexm core: $(CPU_CORE))
endif

ifneq (,$(RUST_TARGET))
  FEATURES_PROVIDED += rust_target
endif

FEATURES_PROVIDED += no_idle_thread