esp-idf/tools/ldgen/ldgen.py

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#!/usr/bin/env python
#
# Copyright 2018-2019 Espressif Systems (Shanghai) PTE 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 argparse
import sys
import tempfile
import subprocess
from fragments import FragmentFile
from sdkconfig import SDKConfig
from generation import GenerationModel, TemplateModel, SectionsInfo
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from ldgen_common import LdGenFailure
from pyparsing import ParseException, ParseFatalException
from io import StringIO
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def main():
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argparser = argparse.ArgumentParser(description="ESP-IDF linker script generator")
argparser.add_argument(
"--input", "-i",
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help="Linker template file",
type=argparse.FileType("r"))
argparser.add_argument(
"--fragments", "-f",
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type=argparse.FileType("r"),
help="Input fragment files",
nargs="+")
argparser.add_argument(
"--libraries-file",
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type=argparse.FileType("r"),
help="File that contains the list of libraries in the build")
argparser.add_argument(
"--output", "-o",
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help="Output linker script",
type=str)
argparser.add_argument(
"--config", "-c",
help="Project configuration")
argparser.add_argument(
"--kconfig", "-k",
help="IDF Kconfig file")
argparser.add_argument(
"--env", "-e",
action='append', default=[],
help='Environment to set when evaluating the config file', metavar='NAME=VAL')
argparser.add_argument(
"--objdump",
help="Path to toolchain objdump")
args = argparser.parse_args()
input_file = args.input
fragment_files = [] if not args.fragments else args.fragments
libraries_file = args.libraries_file
config_file = args.config
output_path = args.output
kconfig_file = args.kconfig
objdump = args.objdump
try:
sections_infos = SectionsInfo()
for library in libraries_file:
library = library.strip()
if library:
dump = StringIO(subprocess.check_output([objdump, "-h", library]).decode())
dump.name = library
sections_infos.add_sections_info(dump)
generation_model = GenerationModel()
sdkconfig = SDKConfig(kconfig_file, config_file, args.env)
for fragment_file in fragment_files:
try:
fragment_file = FragmentFile(fragment_file, sdkconfig)
except (ParseException, ParseFatalException) as e:
# ParseException is raised on incorrect grammar
# ParseFatalException is raised on correct grammar, but inconsistent contents (ex. duplicate
# keys, key unsupported by fragment, unexpected number of values, etc.)
raise LdGenFailure("failed to parse %s\n%s" % (fragment_file.name, str(e)))
generation_model.add_fragments_from_file(fragment_file)
mapping_rules = generation_model.generate_rules(sections_infos)
script_model = TemplateModel(input_file)
script_model.fill(mapping_rules)
with tempfile.TemporaryFile("w+") as output:
script_model.write(output)
output.seek(0)
with open(output_path, "w") as f: # only create output file after generation has suceeded
f.write(output.read())
except LdGenFailure as e:
print("linker script generation failed for %s\nERROR: %s" % (input_file.name, e))
sys.exit(1)
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if __name__ == "__main__":
main()