--
-- Copyright 2023 Google LLC
--
-- 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
--
--      http://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.

set_project("CHERIoT buffer overflow avoidance demo")

local shodan_dir = os.getenv("ROOTDIR")
if shodan_dir == nil or shodan_dir == '' then
  raise("ROOTDIR not set")
end

local sdkdir = path.join(shodan_dir, "sw/cheriot-rtos/sdk")
includes(sdkdir)
set_toolchains("cheriot-clang")

option("board")
    set_default("sail")

-- Support libraries
includes(path.join(sdkdir, "lib"))
includes(path.join(sdkdir, "lib/freestanding"))

-- Application.
compartment("buffer_overflow")
    add_files("buffer_overflow.cc")
    add_deps("debug")
    add_defines("CHERIOT_NO_AMBIENT_MALLOC")

-- Firmware image.
firmware("buffer_overflow-firmware")
    add_deps("buffer_overflow")
    add_deps("freestanding")
    on_load(function(target)
        target:values_set("board", "$(board)")
        local threads = {
            {
                compartment = "buffer_overflow",
                priority = 1,
                entry_point = "entry",
                stack_size = 0x1000, -- 4KB
                trusted_stack_frames = 1
            },
        }
        target:values_set("threads", threads, {expand = false})
    end)