-
Notifications
You must be signed in to change notification settings - Fork 1.2k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
gdb plugin: Encapsulate the gdb native command gcore as nxgcore
Modify elf with nxgcore and call gcore:
(gdb) nxgcore --help
usage: [-h] [-o OUTPUT] [-t OBJCOPY] [-r MEMRANGE]
options:
-h, --help show this help message and exit
-o OUTPUT, --output OUTPUT
Gcore output file
-t OBJCOPY, --objcopy OBJCOPY
Select the appropriate architecture for the objcopy
tool
-r MEMRANGE, --memrange MEMRANGE
examples:
(gdb) nxgcore -t arm-none-eabi-objcopy -r 0x40200000,0x48000000,0x07
Signed-off-by: wangmingrong1 <[email protected]>- Loading branch information
1 parent
bdac8c1
commit b5c5e4b
Showing
2 changed files
with
147 additions
and
11 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| ############################################################################ | ||
| # tools/gdb/gcore.py | ||
| # | ||
| # Licensed to the Apache Software Foundation (ASF) under one or more | ||
| # contributor license agreements. See the NOTICE file distributed with | ||
| # this work for additional information regarding copyright ownership. The | ||
| # ASF licenses this file to you 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 os | ||
| import shutil | ||
| import tempfile | ||
|
|
||
| import gdb | ||
| import utils | ||
|
|
||
|
|
||
| def create_file_with_size(filename, size): | ||
| with open(filename, "wb") as f: | ||
| f.write(b"\0" * size) | ||
|
|
||
|
|
||
| def parse_args(args): | ||
| parser = argparse.ArgumentParser() | ||
| parser.add_argument("-o", "--output", help="Gcore output file") | ||
| parser.add_argument( | ||
| "-t", | ||
| "--objcopy", | ||
| help="Select the appropriate architecture for the objcopy tool", | ||
| type=str, | ||
| ) | ||
| parser.add_argument( | ||
| "-r", | ||
| "--memrange", | ||
| type=str, | ||
| ) | ||
| return parser.parse_args(args) | ||
|
|
||
|
|
||
| class NXGcore(gdb.Command): | ||
| def __init__(self): | ||
| super(NXGcore, self).__init__("nxgcore", gdb.COMMAND_USER) | ||
|
|
||
| def invoke(self, args, from_tty): | ||
| try: | ||
| args = parse_args(gdb.string_to_argv(args)) | ||
| except SystemExit: | ||
| return | ||
|
|
||
| objfile = gdb.current_progspace().objfiles()[0] | ||
| elffile = objfile.filename | ||
| tmpfile = tempfile.NamedTemporaryFile(suffix=".elf") | ||
|
|
||
| # Create temporary ELF file with sections for each memory region | ||
|
|
||
| shutil.copy(elffile, tmpfile.name) | ||
|
|
||
| # If no parameters are passed in | ||
|
|
||
| if args.output: | ||
| corefile = args.output | ||
| else: | ||
| corefile = elffile + ".core" | ||
|
|
||
| # Obtain memory range from macros or parameters | ||
|
|
||
| if args.memrange: | ||
| memregion = args.memrange | ||
| else: | ||
| memregion = str(utils.get_symbol_value("CONFIG_BOARD_MEMORY_RANGE")) | ||
| if len(memregion) < 3: | ||
| print( | ||
| "Please set CONFIG_BOARD_MEMORY_RANGE.\n" | ||
| "Memory range of board. format: <start>,<end>,<flags>,....\n" | ||
| "start: start address of memory range\n" | ||
| "end: end address of memory range\n" | ||
| "flags: Readable 0x1, writable 0x2, executable 0x4\n" | ||
| "example:0x1000,0x2000,0x1,0x2000,0x3000,0x3,0x3000,0x4000,0x7" | ||
| ) | ||
| return | ||
|
|
||
| # Resolve memory range and shell run commands | ||
|
|
||
| values = memregion.replace('"', "").split(",") | ||
|
|
||
| for i in range(0, len(values), 3): | ||
| start = int(values[i], 16) | ||
| end = int(values[i + 1], 16) | ||
|
|
||
| # Create a random section name | ||
|
|
||
| section = tmpfile.name + f"{i // 3}" | ||
|
|
||
| # Add objcopy insertion segment command and modify segment start address command | ||
|
|
||
| create_file_with_size(section, end - start) | ||
|
|
||
| os.system( | ||
| f"{args.objcopy} --add-section {section}={section} " | ||
| f"--set-section-flags {section}=noload,alloc {tmpfile.name}" | ||
| ) | ||
| os.system( | ||
| f"{args.objcopy} --change-section-address " | ||
| f"{section}={hex(start)} {tmpfile.name}" | ||
| ) | ||
|
|
||
| os.remove(section) | ||
|
|
||
| gdb.execute(f"file {tmpfile.name}") | ||
| gdb.execute(f"gcore {corefile}") | ||
| gdb.execute(f"file {elffile}") | ||
| tmpfile.close() | ||
|
|
||
| print(f"Please run gdbserver.py to parse {corefile}") | ||
|
|
||
|
|
||
| NXGcore() |