mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
6f8c62b205
idf.py spawns gdb process within a thread and uses Thread.join() to wait for the gdb process to finish. As CTRL+C(SIGINT) is used by gdb to interrupt the running program, we catch the SIGINT while waiting on the gdb to finish, and try Thread.join() again. With cpython's commit commit a22be4943c119fecf5433d999227ff78fc2e5741 Author: Victor Stinner <vstinner@python.org> Date: Mon Sep 27 14:20:31 2021 +0200 bpo-45274: Fix Thread._wait_for_tstate_lock() race condition (GH-28532) this logic doesn't work anymore, because cpython internally marks the thread as stopped when join() is interrupted with an exception. IMHO this is broken in cpython and there is a bug report about this https://github.com/python/cpython/issues/90882. Problem is that waiting on a thread to finish is based on acquiring a lock. Meaning join() is waiting on _tstate_lock. If this wait is interrupted, the above referenced commit adds a logic that checks if the lock is help, meaning the thread is done and marks the thread as stopped. But there is no way to tell if the lock was acquired by us running join() or if it's held by someone else e.g. still by the thread bootstrap code. Meaning the thread is still running. I may be missing something, but I don't see any reason why to spawn gdb process within a thread. This change removes the thread and spawns gdb directly. Instead waiting on a thread, we wait on the process to finish, replacing join() with wait() and avoiding this problem. Closes https://github.com/espressif/esp-idf/issues/11871 Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
548 lines
24 KiB
Python
548 lines
24 KiB
Python
# SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
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# SPDX-License-Identifier: Apache-2.0
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import json
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import os
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import re
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import shlex
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import shutil
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import subprocess
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import sys
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import threading
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import time
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from textwrap import indent
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from threading import Thread
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from typing import Any, Dict, List, Optional
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from click.core import Context
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from idf_py_actions.constants import OPENOCD_TAGET_CONFIG, OPENOCD_TAGET_CONFIG_DEFAULT
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from idf_py_actions.errors import FatalError
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from idf_py_actions.tools import PropertyDict, ensure_build_directory
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PYTHON = sys.executable
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ESP_ROM_INFO_FILE = 'roms.json'
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GDBINIT_PYTHON_TEMPLATE = '''
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# Add Python GDB extensions
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python
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import sys
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sys.path = {sys_path}
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import freertos_gdb
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end
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'''
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GDBINIT_PYTHON_NOT_SUPPORTED = '''
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# Python scripting is not supported in this copy of GDB.
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# Please make sure that your Python distribution contains Python shared library.
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'''
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GDBINIT_BOOTLOADER_ADD_SYMBOLS = '''
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# Load bootloader symbols
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set confirm off
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add-symbol-file {boot_elf}
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set confirm on
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'''
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GDBINIT_BOOTLOADER_NOT_FOUND = '''
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# Bootloader elf was not found
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'''
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GDBINIT_APP_ADD_SYMBOLS = '''
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# Load application file
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file {app_elf}
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'''
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GDBINIT_CONNECT = '''
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# Connect to the default openocd-esp port and break on app_main()
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target remote :3333
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monitor reset halt
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flushregs
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thbreak app_main
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continue
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'''
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GDBINIT_MAIN = '''
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source {py_extensions}
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source {symbols}
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source {connect}
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'''
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def get_openocd_arguments(target: str) -> str:
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default_args = OPENOCD_TAGET_CONFIG_DEFAULT.format(target=target)
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return str(OPENOCD_TAGET_CONFIG.get(target, default_args))
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def action_extensions(base_actions: Dict, project_path: str) -> Dict:
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OPENOCD_OUT_FILE = 'openocd_out.txt'
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GDBGUI_OUT_FILE = 'gdbgui_out.txt'
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# Internal dictionary of currently active processes, threads and their output files
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processes: Dict = {'threads_to_join': [], 'openocd_issues': None}
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def _check_for_common_openocd_issues(file_name: str, print_all: bool=True) -> Any:
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if processes['openocd_issues'] is not None:
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return processes['openocd_issues']
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try:
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message = 'Please check JTAG connection!'
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with open(file_name, 'r') as f:
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content = f.read()
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if print_all:
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print(content)
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if re.search(r'Address already in use', content):
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message = ('Please check if another process uses the mentioned ports. OpenOCD already running, perhaps in the background?\n'
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'Please list all processes to check if OpenOCD is already running; if so, terminate it before starting OpenOCD from idf.py')
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finally:
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processes['openocd_issues'] = message
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return message
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def _check_openocd_errors(fail_if_openocd_failed: Dict, target: str, ctx: Context) -> None:
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if fail_if_openocd_failed:
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if 'openocd' in processes and processes['openocd'] is not None:
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p = processes['openocd']
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name = processes['openocd_outfile_name']
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# watch OpenOCD (for 5x500ms) to check if it hasn't terminated or outputs an error
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for _ in range(5):
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if p.poll() is not None:
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print('OpenOCD exited with {}'.format(p.poll()))
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break
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with open(name, 'r') as f:
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content = f.read()
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if re.search(r'no device found', content):
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break
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if re.search(r'Listening on port \d+ for gdb connections', content):
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# expect OpenOCD has started successfully - stop watching
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return
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time.sleep(0.5)
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else:
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return
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# OpenOCD exited or error message detected -> print possible output and terminate
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raise FatalError('Action "{}" failed due to errors in OpenOCD:\n{}'.format(target, _check_for_common_openocd_issues(name)), ctx)
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def _terminate_async_target(target: str) -> None:
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if target in processes and processes[target] is not None:
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try:
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if target + '_outfile' in processes:
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processes[target + '_outfile'].close()
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p = processes[target]
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if p.poll() is None:
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p.terminate()
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# waiting 10x100ms for the process to terminate gracefully
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for _ in range(10):
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if p.poll() is not None:
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break
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time.sleep(0.1)
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else:
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p.kill()
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if target + '_outfile_name' in processes:
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if target == 'openocd':
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print(_check_for_common_openocd_issues(processes[target + '_outfile_name'], print_all=False))
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os.unlink(processes[target + '_outfile_name'])
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except Exception as e:
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print(e)
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print('Failed to close/kill {}'.format(target))
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processes[target] = None # to indicate this has ended
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def is_gdb_with_python(gdb: str) -> bool:
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# execute simple python command to check is it supported
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return subprocess.run([gdb, '--batch-silent', '--ex', 'python import os'], stderr=subprocess.DEVNULL).returncode == 0
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def get_normalized_path(path: str) -> str:
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if os.name == 'nt':
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return os.path.normpath(path).replace('\\','\\\\')
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return path
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def get_rom_if_condition_str(date_addr: int, date_str: str) -> str:
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r = []
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for i in range(0, len(date_str), 4):
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value = hex(int.from_bytes(bytes(date_str[i:i + 4], 'utf-8'), 'little'))
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r.append(f'(*(int*) {hex(date_addr + i)}) == {value}')
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return 'if ' + ' && '.join(r)
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def generate_gdbinit_rom_add_symbols(target: str) -> str:
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base_ident = ' '
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rom_elfs_dir = os.getenv('ESP_ROM_ELF_DIR')
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if not rom_elfs_dir:
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raise FatalError('ESP_ROM_ELF_DIR environment variable is not defined. Please try to run IDF "install" and "export" scripts.')
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with open(os.path.join(os.path.dirname(os.path.realpath(__file__)), ESP_ROM_INFO_FILE), 'r') as f:
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roms = json.load(f)
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if target not in roms:
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msg_body = f'Target "{target}" was not found in "{ESP_ROM_INFO_FILE}". Please check IDF integrity.'
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if os.getenv('ESP_IDF_GDB_TESTING'):
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raise FatalError(msg_body)
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print(f'Warning: {msg_body}')
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return f'# {msg_body}'
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r = ['', f'# Load {target} ROM ELF symbols']
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r.append('define target hookpost-remote')
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r.append('set confirm off')
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# Workaround for reading ROM data on xtensa chips
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# This should be deleted after the new openocd-esp release (newer than v0.11.0-esp32-20220706)
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xtensa_chips = ['esp32', 'esp32s2', 'esp32s3']
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if target in xtensa_chips:
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r.append('monitor xtensa set_permissive 1')
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# Since GDB does not have 'else if' statement than we use nested 'if..else' instead.
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for i, k in enumerate(roms[target], 1):
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indent_str = base_ident * i
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rom_file = get_normalized_path(os.path.join(rom_elfs_dir, f'{target}_rev{k["rev"]}_rom.elf'))
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build_date_addr = int(k['build_date_str_addr'], base=16)
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r.append(indent(f'# if $_streq((char *) {hex(build_date_addr)}, "{k["build_date_str"]}")', indent_str))
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r.append(indent(get_rom_if_condition_str(build_date_addr, k['build_date_str']), indent_str))
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r.append(indent(f'add-symbol-file {rom_file}', indent_str + base_ident))
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r.append(indent('else', indent_str))
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if i == len(roms[target]):
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# In case no one known ROM ELF fits - print error and exit with error code 1
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indent_str += base_ident
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msg_body = f'unknown {target} ROM revision.'
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if os.getenv('ESP_IDF_GDB_TESTING'):
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r.append(indent(f'echo Error: {msg_body}\\n', indent_str))
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r.append(indent('quit 1', indent_str))
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else:
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r.append(indent(f'echo Warning: {msg_body}\\n', indent_str))
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# Close 'else' operators
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for i in range(len(roms[target]), 0, -1):
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r.append(indent('end', base_ident * i))
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if target in xtensa_chips:
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r.append('monitor xtensa set_permissive 0')
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r.append('set confirm on')
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r.append('end')
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r.append('')
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return os.linesep.join(r)
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raise FatalError(f'{ESP_ROM_INFO_FILE} file not found. Please check IDF integrity.')
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def generate_gdbinit_files(gdb: str, gdbinit: Optional[str], project_desc: Dict[str, Any]) -> None:
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app_elf = get_normalized_path(os.path.join(project_desc['build_dir'], project_desc['app_elf']))
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if not os.path.exists(app_elf):
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raise FatalError('ELF file not found. You need to build & flash the project before running debug targets')
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# Recreate empty 'gdbinit' directory
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gdbinit_dir = os.path.join(project_desc['build_dir'], 'gdbinit')
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if os.path.isfile(gdbinit_dir):
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os.remove(gdbinit_dir)
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elif os.path.isdir(gdbinit_dir):
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shutil.rmtree(gdbinit_dir)
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os.mkdir(gdbinit_dir)
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# Prepare gdbinit for Python GDB extensions import
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py_extensions = os.path.join(gdbinit_dir, 'py_extensions')
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with open(py_extensions, 'w') as f:
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if is_gdb_with_python(gdb):
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f.write(GDBINIT_PYTHON_TEMPLATE.format(sys_path=sys.path))
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else:
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f.write(GDBINIT_PYTHON_NOT_SUPPORTED)
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# Prepare gdbinit for related ELFs symbols load
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symbols = os.path.join(gdbinit_dir, 'symbols')
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with open(symbols, 'w') as f:
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boot_elf = get_normalized_path(project_desc['bootloader_elf']) if 'bootloader_elf' in project_desc else None
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if boot_elf and os.path.exists(boot_elf):
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f.write(GDBINIT_BOOTLOADER_ADD_SYMBOLS.format(boot_elf=boot_elf))
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else:
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f.write(GDBINIT_BOOTLOADER_NOT_FOUND)
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f.write(generate_gdbinit_rom_add_symbols(project_desc['target']))
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f.write(GDBINIT_APP_ADD_SYMBOLS.format(app_elf=app_elf))
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# Generate the gdbinit for target connect if no custom gdbinit is present
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if not gdbinit:
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gdbinit = os.path.join(gdbinit_dir, 'connect')
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with open(gdbinit, 'w') as f:
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f.write(GDBINIT_CONNECT)
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with open(os.path.join(gdbinit_dir, 'gdbinit'), 'w') as f:
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f.write(GDBINIT_MAIN.format(py_extensions=py_extensions, symbols=symbols, connect=gdbinit))
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def debug_cleanup() -> None:
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print('cleaning up debug targets')
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for t in processes['threads_to_join']:
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if threading.currentThread() != t:
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t.join()
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_terminate_async_target('openocd')
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_terminate_async_target('gdbgui')
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_terminate_async_target('gdb')
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def post_debug(action: str, ctx: Context, args: PropertyDict, **kwargs: str) -> None:
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""" Deal with asynchronous targets, such as openocd running in background """
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if kwargs['block'] == 1:
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for target in ['openocd', 'gdbgui']:
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if target in processes and processes[target] is not None:
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break
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else:
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return
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try:
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p = processes[target]
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name = processes[target + '_outfile_name']
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pos = 0
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while True:
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with open(name, 'r') as f:
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f.seek(pos)
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for line in f:
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print(line.rstrip())
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pos = f.tell()
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if p.poll() is not None:
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print('"{}" exited with {}'.format(target, p.poll()))
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break
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time.sleep(0.5)
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except KeyboardInterrupt:
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print('Terminated -> exiting debug utility targets')
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_terminate_async_target('openocd')
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_terminate_async_target('gdbgui')
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def get_project_desc(args: PropertyDict, ctx: Context) -> Any:
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desc_path = os.path.join(args.build_dir, 'project_description.json')
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if not os.path.exists(desc_path):
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ensure_build_directory(args, ctx.info_name)
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with open(desc_path, 'r') as f:
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project_desc = json.load(f)
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return project_desc
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def openocd(action: str, ctx: Context, args: PropertyDict, openocd_scripts: Optional[str], openocd_commands: str) -> None:
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"""
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Execute openocd as external tool
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"""
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if os.getenv('OPENOCD_SCRIPTS') is None:
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raise FatalError('OPENOCD_SCRIPTS not found in the environment: Please run export.sh/export.bat', ctx)
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openocd_arguments = os.getenv('OPENOCD_COMMANDS') if openocd_commands is None else openocd_commands
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project_desc = get_project_desc(args, ctx)
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if openocd_arguments is None:
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# use default value if commands not defined in the environment nor command line
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target = project_desc['target']
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openocd_arguments = get_openocd_arguments(target)
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print('Note: OpenOCD cfg not found (via env variable OPENOCD_COMMANDS nor as a --openocd-commands argument)\n'
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'OpenOCD arguments default to: "{}"'.format(openocd_arguments))
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# script directory is taken from the environment by OpenOCD, update only if command line arguments to override
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if openocd_scripts is not None:
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openocd_arguments += ' -s {}'.format(openocd_scripts)
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local_dir = project_desc['build_dir']
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args = ['openocd'] + shlex.split(openocd_arguments)
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openocd_out_name = os.path.join(local_dir, OPENOCD_OUT_FILE)
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openocd_out = open(openocd_out_name, 'a+')
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try:
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process = subprocess.Popen(args, stdout=openocd_out, stderr=subprocess.STDOUT, bufsize=1)
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except Exception as e:
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print(e)
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raise FatalError('Error starting openocd. Please make sure it is installed and is present in executable paths', ctx)
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processes['openocd'] = process
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processes['openocd_outfile'] = openocd_out
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processes['openocd_outfile_name'] = openocd_out_name
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print('OpenOCD started as a background task {}'.format(process.pid))
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def get_gdb_args(project_desc: Dict[str, Any]) -> List:
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gdbinit = os.path.join(project_desc['build_dir'], 'gdbinit', 'gdbinit')
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args = ['-x={}'.format(gdbinit)]
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debug_prefix_gdbinit = project_desc.get('debug_prefix_map_gdbinit')
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if debug_prefix_gdbinit:
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args.append('-ix={}'.format(debug_prefix_gdbinit))
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return args
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def gdbui(action: str, ctx: Context, args: PropertyDict, gdbgui_port: Optional[str], gdbinit: Optional[str], require_openocd: bool) -> None:
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"""
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Asynchronous GDB-UI target
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"""
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project_desc = get_project_desc(args, ctx)
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local_dir = project_desc['build_dir']
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gdb = project_desc['monitor_toolprefix'] + 'gdb'
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generate_gdbinit_files(gdb, gdbinit, project_desc)
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# this is a workaround for gdbgui
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# gdbgui is using shlex.split for the --gdb-args option. When the input is:
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# - '"-x=foo -x=bar"', would return ['foo bar']
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# - '-x=foo', would return ['-x', 'foo'] and mess up the former option '--gdb-args'
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# so for one item, use extra double quotes. for more items, use no extra double quotes.
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gdb_args_list = get_gdb_args(project_desc)
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gdb_args = '"{}"'.format(' '.join(gdb_args_list)) if len(gdb_args_list) == 1 else ' '.join(gdb_args_list)
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args = ['gdbgui', '-g', gdb, '--gdb-args', gdb_args]
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print(args)
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if gdbgui_port is not None:
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args += ['--port', gdbgui_port]
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gdbgui_out_name = os.path.join(local_dir, GDBGUI_OUT_FILE)
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gdbgui_out = open(gdbgui_out_name, 'a+')
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env = os.environ.copy()
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# The only known solution for https://github.com/cs01/gdbgui/issues/359 is to set the following environment
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# variable. The greenlet package cannot be downgraded for compatibility with other requirements (gdbgui,
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# pygdbmi).
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env['PURE_PYTHON'] = '1'
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try:
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process = subprocess.Popen(args, stdout=gdbgui_out, stderr=subprocess.STDOUT, bufsize=1, env=env)
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except (OSError, subprocess.CalledProcessError) as e:
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print(e)
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if sys.version_info[:2] >= (3, 11):
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raise SystemExit('Unfortunately, gdbgui is supported only with Python 3.10 or older. '
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'See: https://github.com/espressif/esp-idf/issues/10116. '
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'Please use "idf.py gdb" or debug in Eclipse/Vscode instead.')
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raise FatalError('Error starting gdbgui. Please make sure gdbgui has been installed with '
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'"install.{sh,bat,ps1,fish} --enable-gdbgui" and can be started.', ctx)
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processes['gdbgui'] = process
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processes['gdbgui_outfile'] = gdbgui_out
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processes['gdbgui_outfile_name'] = gdbgui_out_name
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print('gdbgui started as a background task {}'.format(process.pid))
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_check_openocd_errors(fail_if_openocd_failed, action, ctx)
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def global_callback(ctx: Context, global_args: PropertyDict, tasks: List) -> None:
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def move_to_front(task_name: str) -> None:
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for index, task in enumerate(tasks):
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if task.name == task_name:
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tasks.insert(0, tasks.pop(index))
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break
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debug_targets = any([task.name in ('openocd', 'gdbgui') for task in tasks])
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if debug_targets:
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|
# Register the meta cleanup callback -> called on FatalError
|
|
ctx.meta['cleanup'] = debug_cleanup
|
|
move_to_front('gdbgui') # possibly 2nd
|
|
move_to_front('openocd') # always 1st
|
|
# followed by "monitor", "gdb" or "gdbtui" in any order
|
|
|
|
post_action = ctx.invoke(ctx.command.get_command(ctx, 'post_debug'))
|
|
if any([task.name in ('monitor', 'gdb', 'gdbtui') for task in tasks]):
|
|
post_action.action_args['block'] = 0
|
|
else:
|
|
post_action.action_args['block'] = 1
|
|
tasks.append(post_action) # always last
|
|
if any([task.name == 'openocd' for task in tasks]):
|
|
for task in tasks:
|
|
if task.name in ('gdb', 'gdbgui', 'gdbtui'):
|
|
task.action_args['require_openocd'] = True
|
|
|
|
def gdbtui(action: str, ctx: Context, args: PropertyDict, gdbinit: str, require_openocd: bool) -> None:
|
|
"""
|
|
Synchronous GDB target with text ui mode
|
|
"""
|
|
gdb(action, ctx, args, False, 1, gdbinit, require_openocd)
|
|
|
|
def gdb(action: str, ctx: Context, args: PropertyDict, batch: bool, gdb_tui: Optional[int], gdbinit: Optional[str], require_openocd: bool) -> None:
|
|
"""
|
|
Synchronous GDB target
|
|
"""
|
|
watch_openocd = Thread(target=_check_openocd_errors, args=(fail_if_openocd_failed, action, ctx, ))
|
|
watch_openocd.start()
|
|
processes['threads_to_join'].append(watch_openocd)
|
|
project_desc = get_project_desc(args, ctx)
|
|
gdb = project_desc['monitor_toolprefix'] + 'gdb'
|
|
generate_gdbinit_files(gdb, gdbinit, project_desc)
|
|
args = [gdb, *get_gdb_args(project_desc)]
|
|
if gdb_tui is not None:
|
|
args += ['-tui']
|
|
if batch:
|
|
args += ['--batch']
|
|
p = subprocess.Popen(args)
|
|
processes['gdb'] = p
|
|
while True:
|
|
try:
|
|
p.wait()
|
|
break
|
|
except KeyboardInterrupt:
|
|
# Catching Keyboard interrupt, as this is used for breaking running program in gdb
|
|
continue
|
|
finally:
|
|
watch_openocd.join()
|
|
try:
|
|
processes['threads_to_join'].remove(watch_openocd)
|
|
except ValueError:
|
|
# Valid scenario: watch_openocd task won't be in the list if openocd not started from idf.py
|
|
pass
|
|
|
|
fail_if_openocd_failed = {
|
|
'names': ['--require-openocd', '--require_openocd'],
|
|
'help':
|
|
('Fail this target if openocd (this targets dependency) failed.\n'),
|
|
'is_flag': True,
|
|
'default': False,
|
|
}
|
|
gdbinit = {
|
|
'names': ['--gdbinit'],
|
|
'help': ('Specify the name of gdbinit file to use\n'),
|
|
'default': None,
|
|
}
|
|
debug_actions = {
|
|
'global_action_callbacks': [global_callback],
|
|
'actions': {
|
|
'openocd': {
|
|
'callback': openocd,
|
|
'help': 'Run openocd from current path',
|
|
'options': [
|
|
{
|
|
'names': ['--openocd-scripts', '--openocd_scripts'],
|
|
'help':
|
|
('Script directory for openocd cfg files.\n'),
|
|
'default':
|
|
None,
|
|
},
|
|
{
|
|
'names': ['--openocd-commands', '--openocd_commands'],
|
|
'help':
|
|
('Command line arguments for openocd.\n'),
|
|
'default': None,
|
|
}
|
|
],
|
|
'order_dependencies': ['all', 'flash'],
|
|
},
|
|
'gdb': {
|
|
'callback': gdb,
|
|
'help': 'Run the GDB.',
|
|
'options': [
|
|
{
|
|
'names': ['--batch'],
|
|
'help': ('exit after processing gdbinit.\n'),
|
|
'hidden': True,
|
|
'is_flag': True,
|
|
'default': False,
|
|
},
|
|
{
|
|
'names': ['--gdb-tui', '--gdb_tui'],
|
|
'help': ('run gdb in TUI mode\n'),
|
|
'default': None,
|
|
}, gdbinit, fail_if_openocd_failed
|
|
],
|
|
'order_dependencies': ['all', 'flash'],
|
|
},
|
|
'gdbgui': {
|
|
'callback': gdbui,
|
|
'help': 'GDB UI in default browser.',
|
|
'options': [
|
|
{
|
|
'names': ['--gdbgui-port', '--gdbgui_port'],
|
|
'help':
|
|
('The port on which gdbgui will be hosted. Default: 5000\n'),
|
|
'default':
|
|
None,
|
|
}, gdbinit, fail_if_openocd_failed
|
|
],
|
|
'order_dependencies': ['all', 'flash'],
|
|
},
|
|
'gdbtui': {
|
|
'callback': gdbtui,
|
|
'help': 'GDB TUI mode.',
|
|
'options': [gdbinit, fail_if_openocd_failed],
|
|
'order_dependencies': ['all', 'flash'],
|
|
},
|
|
'post-debug': {
|
|
'callback': post_debug,
|
|
'help': 'Utility target to read the output of async debug action and stop them.',
|
|
'options': [
|
|
{
|
|
'names': ['--block', '--block'],
|
|
'help':
|
|
('Set to 1 for blocking the console on the outputs of async debug actions\n'),
|
|
'default': 0,
|
|
},
|
|
],
|
|
'order_dependencies': [],
|
|
},
|
|
'post_debug': {
|
|
'callback': post_debug,
|
|
'deprecated': {
|
|
'since': 'v4.4',
|
|
'removed': 'v5.0',
|
|
'exit_with_error': True,
|
|
'message': 'Have you wanted to run "post-debug" instead?',
|
|
},
|
|
'hidden': True,
|
|
'help': 'Utility target to read the output of async debug action and stop them.',
|
|
'options': [
|
|
{
|
|
'names': ['--block', '--block'],
|
|
'help':
|
|
('Set to 1 for blocking the console on the outputs of async debug actions\n'),
|
|
'default': 0,
|
|
},
|
|
],
|
|
'order_dependencies': [],
|
|
},
|
|
},
|
|
}
|
|
|
|
return debug_actions
|