# Copyright (C) 2021 Huawei Device Co., Ltd.
# 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.

import("//build/ohos.gni")
import("//developtools/profiler/device/base/config.gni")

skel_src_dir = "$target_out_dir/src"
skel_out_dir = "$root_gen_dir/cpp/developtools/profiler/hiebpf/ebpf_skeleton"

config("common_config") {
  cflags = [
    "-Wno-unused-command-line-argument",
    "-Wno-unused-variable",
    "-Wno-unused-function",
    "-Wno-gnu-folding-constant",
    "-fno-omit-frame-pointer",
    "-mno-omit-leaf-frame-pointer",
    "-fno-inline",
    "-fno-optimize-sibling-calls",
    "-Wno-format",
    "-Wno-switch",
    "-Wno-braced-scalar-init",
    "-fno-common",
  ]
  defines = [
    "__KERNEL__",
    "BPF_LOGGER_DEBUG",
    "HH_LOGGER_DEBUG",
  ]
  include_dirs = [
    "$skel_out_dir",
    "./include",
    "//third_party/libbpf/src",
  ]
}

config("user_common_config") {
  cflags = [
    "-g",
    "-Wno-unknown-attributes",
    "-Wno-bitwise-op-parentheses",
    "-Wno-shift-op-parentheses",
    "-Wno-sign-compare",
    "-Wno-format",
  ]
  include_dirs = []
  defines = [ "__aarch64__" ]
}

config("kern_common_config") {
  cflags = [
    "-target",
    "bpf",
    "-g",
    "-fno-stack-protector",
    "-fno-data-sections",
  ]
  defines = [ "__aarch64__" ]
  include_dirs = []
}

ohos_source_set("hiebpf.bpf") {
  remove_configs = [ "//build/config/coverage:default_coverage" ]
  if (use_libfuzzer) {
    remove_configs += [ "//build/config/sanitizers:default_sanitizer_flags" ]
  }
  sources = [ "./src/hiebpf.bpf.c" ]
  configs = [
    ":common_config",
    ":kern_common_config",
  ]
  subsystem_name = "${OHOS_PROFILER_SUBSYS_NAME}"
  part_name = "${OHOS_PROFILER_PART_NAME}"
  output_name = "hiebpf.bpf.o"
}

action("gen_bpf_skeleton") {
  script = "./scripts/gen_skeleton.sh"
  sources = []
  outputs = [ "$skel_out_dir/hiebpf.skel.h" ]
  bpftool_dir = rebase_path("//prebuilts/develop_tools/bpftool/bin/bpftool")
  skel_src_dir_abs = rebase_path("${skel_src_dir}")
  skel_out_dir_abs = rebase_path("${skel_out_dir}")
  args = [
    bpftool_dir,
    skel_src_dir_abs,
    skel_out_dir_abs,
  ]
  deps = [ ":hiebpf.bpf" ]
}

ohos_source_set("hiebpf_source_common") {
  public_configs = [
    ":common_config",
    ":user_common_config",
    "${OHOS_PROFILER_DIR}/device/base:hiprofiler_test_config",
  ]

  sources = [
    "./src/bpf_controller.cpp",
    "./src/bpf_event_receiver.cpp",
    "./src/bpf_log_reader.cpp",
    "./src/command_helper.cpp",
    "./src/elf_file.cpp",
    "./src/elf_symbol_info.cpp",
    "./src/fstrace_args_converter.cpp",
    "./src/hhlog.cpp",
    "./src/hiebpf_data_file.cpp",
    "./src/ipc_unix_socket.cpp",
    "./src/kernel_symbol_info.cpp",
    "./src/libbpf_logger.cpp",
    "./src/maps_info.cpp",
    "./src/ringbuffer.cpp",
    "./src/utilities.cpp",
  ]

  public_deps = [
    ":gen_bpf_skeleton",
    "//third_party/bounds_checking_function:libsec_static",
    "//third_party/libbpf:libbpf",
  ]
  subsystem_name = "${OHOS_PROFILER_SUBSYS_NAME}"
  part_name = "${OHOS_PROFILER_PART_NAME}"
}

ohos_executable("hiebpf") {
  sources = [ "./src/hiebpf.cpp" ]  # this is main()

  deps = [ ":hiebpf_source_common" ]

  subsystem_name = "${OHOS_PROFILER_SUBSYS_NAME}"
  part_name = "${OHOS_PROFILER_PART_NAME}"
  output_name = "hiebpf"
}

group("hiebpf_tool") {
  if (current_toolchain == "//build/toolchain/ohos:ohos_clang_arm64") {
    if (!is_asan && use_musl) {
      deps = [
        ":hiebpf",
        ":hiebpf.bpf",
      ]
    }
  }
}

group("hiebpf_all") {
  testonly = true
  deps = [
    ":hiebpf_tool",
    "test:hiebpf_ut",
  ]
}