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Diffstat (limited to 'scripts/ethosumonitor/elf.py')
-rw-r--r-- | scripts/ethosumonitor/elf.py | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/scripts/ethosumonitor/elf.py b/scripts/ethosumonitor/elf.py new file mode 100644 index 0000000..bf9ab39 --- /dev/null +++ b/scripts/ethosumonitor/elf.py @@ -0,0 +1,47 @@ +# +# 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) |