pw_thread_freertos/backend.gni

# Copyright 2021 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

import("//build_overrides/pigweed.gni")

import("$dir_pigweed/third_party/freertos/freertos.gni")

declare_args() {
  # Unfortunately FreeRTOS entirely hides the contents of the TCB inside of
  # tasks.c but it's necessary for snapshot processing in order to access the
  # stack limits. Set this to a pw_source_set which provides the tskTCB struct
  # definition for snapshot to work with FreeRTOS. By default, this is
  # auto-generated from FreeRTOS sources and shouldn't need to be manually
  # modified.
  #
  # See the pw_thread_freertos docs for more details.
  if (dir_pw_third_party_freertos != "") {
    pw_thread_freertos_FREERTOS_TSKTCB_BACKEND =
        "$dir_pw_thread_freertos:auto_freertos_tsktcb"
  } else {
    pw_thread_freertos_FREERTOS_TSKTCB_BACKEND = ""
  }
}