mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 04:59:55 +00:00
96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
#
|
|
# Copyright 2021 Espressif Systems (Shanghai) 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 collections
|
|
import os
|
|
|
|
from fragments import Fragment
|
|
from generation import GenerationException
|
|
from pyparsing import ParseException, Suppress, White
|
|
|
|
|
|
class LinkerScript:
|
|
"""
|
|
Encapsulates a linker script template file. Finds marker syntax and handles replacement to generate the
|
|
final output.
|
|
"""
|
|
|
|
Marker = collections.namedtuple('Marker', 'target indent rules')
|
|
|
|
def __init__(self, template_file):
|
|
self.members = []
|
|
self.file = os.path.realpath(template_file.name)
|
|
|
|
self._generate_members(template_file)
|
|
|
|
def _generate_members(self, template_file):
|
|
lines = template_file.readlines()
|
|
|
|
target = Fragment.IDENTIFIER
|
|
reference = Suppress('mapping') + Suppress('[') + target.setResultsName('target') + Suppress(']')
|
|
pattern = White(' \t').setResultsName('indent') + reference
|
|
|
|
# Find the markers in the template file line by line. If line does not match marker grammar,
|
|
# set it as a literal to be copied as is to the output file.
|
|
for line in lines:
|
|
try:
|
|
parsed = pattern.parseString(line)
|
|
|
|
indent = parsed.indent
|
|
target = parsed.target
|
|
|
|
marker = LinkerScript.Marker(target, indent, [])
|
|
|
|
self.members.append(marker)
|
|
except ParseException:
|
|
# Does not match marker syntax
|
|
self.members.append(line)
|
|
|
|
def fill(self, mapping_rules):
|
|
for member in self.members:
|
|
target = None
|
|
try:
|
|
target = member.target
|
|
rules = member.rules
|
|
|
|
del rules[:]
|
|
|
|
rules.extend(mapping_rules[target])
|
|
except KeyError:
|
|
message = GenerationException.UNDEFINED_REFERENCE + " to target '" + target + "'."
|
|
raise GenerationException(message)
|
|
except AttributeError:
|
|
pass
|
|
|
|
def write(self, output_file):
|
|
# Add information that this is a generated file.
|
|
output_file.write('/* Automatically generated file; DO NOT EDIT */\n')
|
|
output_file.write('/* Espressif IoT Development Framework Linker Script */\n')
|
|
output_file.write('/* Generated from: %s */\n' % self.file)
|
|
output_file.write('\n')
|
|
|
|
# Do the text replacement
|
|
for member in self.members:
|
|
try:
|
|
indent = member.indent
|
|
rules = member.rules
|
|
|
|
for rule in rules:
|
|
generated_line = ''.join([indent, str(rule), '\n'])
|
|
output_file.write(generated_line)
|
|
except AttributeError:
|
|
output_file.write(member)
|