| # |
| # SPDX-FileCopyrightText: Copyright 2022 Arm Limited and/or its affiliates <open-source-office@arm.com> |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # 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 |
| # |
| # 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. |
| # |
| |
| def elfFindSymbol(elf, name): |
| from elftools.elf.sections import SymbolTableSection |
| |
| for section in elf.iter_sections(): |
| if isinstance(section, SymbolTableSection): |
| symbol = section.get_symbol_by_name(name) |
| if symbol: |
| return symbol[0] |
| |
| return None |
| |
| def elfGetData(elf, address, size): |
| for section in elf.iter_sections(): |
| if address >= section.header['sh_addr'] and \ |
| (address + size) < (section.header['sh_addr'] + section.header['sh_size']): |
| offset = address - section.header['sh_addr'] |
| return bytearray(section.data()[offset:offset+size]) |
| |
| return None |
| |
| def elfGetSymbolData(elf, name): |
| from sys import stderr |
| |
| symbol = elfFindSymbol(elf, name) |
| if not symbol: |
| stderr.write(f'Failed to find symbol {name}\n') |
| return None |
| |
| return elfGetData(elf, symbol.entry.st_value, symbol.entry.st_size) |