| #!/usr/bin/env python |
| # |
| # Copyright (C) 2015 The Android Open Source Project |
| # |
| # 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 adb |
| import argparse |
| import json |
| import logging |
| import os |
| import re |
| import subprocess |
| import sys |
| import textwrap |
| |
| # Shared functions across gdbclient.py and ndk-gdb.py. |
| import gdbrunner |
| |
| def get_gdbserver_path(root, arch): |
| path = "{}/prebuilts/misc/gdbserver/android-{}/gdbserver{}" |
| if arch.endswith("64"): |
| return path.format(root, arch, "64") |
| else: |
| return path.format(root, arch, "") |
| |
| |
| def get_tracer_pid(device, pid): |
| if pid is None: |
| return 0 |
| |
| line, _ = device.shell(["grep", "-e", "^TracerPid:", "/proc/{}/status".format(pid)]) |
| tracer_pid = re.sub('TracerPid:\t(.*)\n', r'\1', line) |
| return int(tracer_pid) |
| |
| |
| def parse_args(): |
| parser = gdbrunner.ArgumentParser() |
| |
| group = parser.add_argument_group(title="attach target") |
| group = group.add_mutually_exclusive_group(required=True) |
| group.add_argument( |
| "-p", dest="target_pid", metavar="PID", type=int, |
| help="attach to a process with specified PID") |
| group.add_argument( |
| "-n", dest="target_name", metavar="NAME", |
| help="attach to a process with specified name") |
| group.add_argument( |
| "-r", dest="run_cmd", metavar="CMD", nargs=argparse.REMAINDER, |
| help="run a binary on the device, with args") |
| |
| parser.add_argument( |
| "--port", nargs="?", default="5039", |
| help="override the port used on the host [default: 5039]") |
| parser.add_argument( |
| "--user", nargs="?", default="root", |
| help="user to run commands as on the device [default: root]") |
| parser.add_argument( |
| "--setup-forwarding", default=None, choices=["gdb", "vscode"], |
| help=("Setup the gdbserver and port forwarding. Prints commands or " + |
| ".vscode/launch.json configuration needed to connect the debugging " + |
| "client to the server.")) |
| |
| parser.add_argument( |
| "--env", nargs=1, action="append", metavar="VAR=VALUE", |
| help="set environment variable when running a binary") |
| |
| return parser.parse_args() |
| |
| |
| def verify_device(root, device): |
| name = device.get_prop("ro.product.name") |
| target_device = os.environ["TARGET_PRODUCT"] |
| if target_device != name: |
| msg = "TARGET_PRODUCT ({}) does not match attached device ({})" |
| sys.exit(msg.format(target_device, name)) |
| |
| |
| def get_remote_pid(device, process_name): |
| processes = gdbrunner.get_processes(device) |
| if process_name not in processes: |
| msg = "failed to find running process {}".format(process_name) |
| sys.exit(msg) |
| pids = processes[process_name] |
| if len(pids) > 1: |
| msg = "multiple processes match '{}': {}".format(process_name, pids) |
| sys.exit(msg) |
| |
| # Fetch the binary using the PID later. |
| return pids[0] |
| |
| |
| def ensure_linker(device, sysroot, is64bit): |
| local_path = os.path.join(sysroot, "system", "bin", "linker") |
| remote_path = "/system/bin/linker" |
| if is64bit: |
| local_path += "64" |
| remote_path += "64" |
| if not os.path.exists(local_path): |
| device.pull(remote_path, local_path) |
| |
| |
| def handle_switches(args, sysroot): |
| """Fetch the targeted binary and determine how to attach gdb. |
| |
| Args: |
| args: Parsed arguments. |
| sysroot: Local sysroot path. |
| |
| Returns: |
| (binary_file, attach_pid, run_cmd). |
| Precisely one of attach_pid or run_cmd will be None. |
| """ |
| |
| device = args.device |
| binary_file = None |
| pid = None |
| run_cmd = None |
| |
| args.su_cmd = ["su", args.user] if args.user else [] |
| |
| if args.target_pid: |
| # Fetch the binary using the PID later. |
| pid = args.target_pid |
| elif args.target_name: |
| # Fetch the binary using the PID later. |
| pid = get_remote_pid(device, args.target_name) |
| elif args.run_cmd: |
| if not args.run_cmd[0]: |
| sys.exit("empty command passed to -r") |
| run_cmd = args.run_cmd |
| if not run_cmd[0].startswith("/"): |
| try: |
| run_cmd[0] = gdbrunner.find_executable_path(device, args.run_cmd[0], |
| run_as_cmd=args.su_cmd) |
| except RuntimeError: |
| sys.exit("Could not find executable '{}' passed to -r, " |
| "please provide an absolute path.".format(args.run_cmd[0])) |
| |
| binary_file, local = gdbrunner.find_file(device, run_cmd[0], sysroot, |
| run_as_cmd=args.su_cmd) |
| if binary_file is None: |
| assert pid is not None |
| try: |
| binary_file, local = gdbrunner.find_binary(device, pid, sysroot, |
| run_as_cmd=args.su_cmd) |
| except adb.ShellError: |
| sys.exit("failed to pull binary for PID {}".format(pid)) |
| |
| if not local: |
| logging.warning("Couldn't find local unstripped executable in {}," |
| " symbols may not be available.".format(sysroot)) |
| |
| return (binary_file, pid, run_cmd) |
| |
| def generate_vscode_script(gdbpath, root, sysroot, binary_name, port, dalvik_gdb_script, solib_search_path): |
| # TODO It would be nice if we didn't need to copy this or run the |
| # gdbclient.py program manually. Doing this would probably require |
| # writing a vscode extension or modifying an existing one. |
| res = { |
| "name": "(gdbclient.py) Attach {} (port: {})".format(binary_name.split("/")[-1], port), |
| "type": "cppdbg", |
| "request": "launch", # Needed for gdbserver. |
| "cwd": root, |
| "program": binary_name, |
| "MIMode": "gdb", |
| "miDebuggerServerAddress": "localhost:{}".format(port), |
| "miDebuggerPath": gdbpath, |
| "setupCommands": [ |
| { |
| # Required for vscode. |
| "description": "Enable pretty-printing for gdb", |
| "text": "-enable-pretty-printing", |
| "ignoreFailures": True, |
| }, |
| { |
| "description": "gdb command: dir", |
| "text": "-environment-directory {}".format(root), |
| "ignoreFailures": False |
| }, |
| { |
| "description": "gdb command: set solib-search-path", |
| "text": "-gdb-set solib-search-path {}".format(":".join(solib_search_path)), |
| "ignoreFailures": False |
| }, |
| { |
| "description": "gdb command: set solib-absolute-prefix", |
| "text": "-gdb-set solib-absolute-prefix {}".format(sysroot), |
| "ignoreFailures": False |
| }, |
| ] |
| } |
| if dalvik_gdb_script: |
| res["setupCommands"].append({ |
| "description": "gdb command: source art commands", |
| "text": "-interpreter-exec console \"source {}\"".format(dalvik_gdb_script), |
| "ignoreFailures": False, |
| }) |
| return json.dumps(res, indent=4) |
| |
| def generate_gdb_script(root, sysroot, binary_name, port, dalvik_gdb_script, solib_search_path, connect_timeout): |
| solib_search_path = ":".join(solib_search_path) |
| |
| gdb_commands = "" |
| gdb_commands += "file '{}'\n".format(binary_name) |
| gdb_commands += "directory '{}'\n".format(root) |
| gdb_commands += "set solib-absolute-prefix {}\n".format(sysroot) |
| gdb_commands += "set solib-search-path {}\n".format(solib_search_path) |
| if dalvik_gdb_script: |
| gdb_commands += "source {}\n".format(dalvik_gdb_script) |
| |
| # Try to connect for a few seconds, sometimes the device gdbserver takes |
| # a little bit to come up, especially on emulators. |
| gdb_commands += """ |
| python |
| |
| def target_remote_with_retry(target, timeout_seconds): |
| import time |
| end_time = time.time() + timeout_seconds |
| while True: |
| try: |
| gdb.execute("target extended-remote " + target) |
| return True |
| except gdb.error as e: |
| time_left = end_time - time.time() |
| if time_left < 0 or time_left > timeout_seconds: |
| print("Error: unable to connect to device.") |
| print(e) |
| return False |
| time.sleep(min(0.25, time_left)) |
| |
| target_remote_with_retry(':{}', {}) |
| |
| end |
| """.format(port, connect_timeout) |
| |
| return gdb_commands |
| |
| def generate_setup_script(gdbpath, sysroot, binary_file, is64bit, port, debugger, connect_timeout=5): |
| # Generate a setup script. |
| # TODO: Detect the zygote and run 'art-on' automatically. |
| root = os.environ["ANDROID_BUILD_TOP"] |
| symbols_dir = os.path.join(sysroot, "system", "lib64" if is64bit else "lib") |
| vendor_dir = os.path.join(sysroot, "vendor", "lib64" if is64bit else "lib") |
| |
| solib_search_path = [] |
| symbols_paths = ["", "hw", "ssl/engines", "drm", "egl", "soundfx"] |
| vendor_paths = ["", "hw", "egl"] |
| solib_search_path += [os.path.join(symbols_dir, x) for x in symbols_paths] |
| solib_search_path += [os.path.join(vendor_dir, x) for x in vendor_paths] |
| |
| dalvik_gdb_script = os.path.join(root, "development", "scripts", "gdb", "dalvik.gdb") |
| if not os.path.exists(dalvik_gdb_script): |
| logging.warning(("couldn't find {} - ART debugging options will not " + |
| "be available").format(dalvik_gdb_script)) |
| dalvik_gdb_script = None |
| |
| if debugger == "vscode": |
| return generate_vscode_script( |
| gdbpath, root, sysroot, binary_file.name, port, dalvik_gdb_script, solib_search_path) |
| elif debugger == "gdb": |
| return generate_gdb_script(root, sysroot, binary_file.name, port, dalvik_gdb_script, solib_search_path, connect_timeout) |
| else: |
| raise Exception("Unknown debugger type " + debugger) |
| |
| |
| def main(): |
| required_env = ["ANDROID_BUILD_TOP", |
| "ANDROID_PRODUCT_OUT", "TARGET_PRODUCT"] |
| for env in required_env: |
| if env not in os.environ: |
| sys.exit( |
| "Environment variable '{}' not defined, have you run lunch?".format(env)) |
| |
| args = parse_args() |
| device = args.device |
| |
| if device is None: |
| sys.exit("ERROR: Failed to find device.") |
| |
| root = os.environ["ANDROID_BUILD_TOP"] |
| sysroot = os.path.join(os.environ["ANDROID_PRODUCT_OUT"], "symbols") |
| |
| # Make sure the environment matches the attached device. |
| verify_device(root, device) |
| |
| debug_socket = "/data/local/tmp/debug_socket" |
| pid = None |
| run_cmd = None |
| |
| # Fetch binary for -p, -n. |
| binary_file, pid, run_cmd = handle_switches(args, sysroot) |
| |
| with binary_file: |
| arch = gdbrunner.get_binary_arch(binary_file) |
| is64bit = arch.endswith("64") |
| |
| # Make sure we have the linker |
| ensure_linker(device, sysroot, is64bit) |
| |
| tracer_pid = get_tracer_pid(device, pid) |
| if tracer_pid == 0: |
| cmd_prefix = args.su_cmd |
| if args.env: |
| cmd_prefix += ['env'] + [v[0] for v in args.env] |
| |
| # Start gdbserver. |
| gdbserver_local_path = get_gdbserver_path(root, arch) |
| gdbserver_remote_path = "/data/local/tmp/{}-gdbserver".format(arch) |
| gdbrunner.start_gdbserver( |
| device, gdbserver_local_path, gdbserver_remote_path, |
| target_pid=pid, run_cmd=run_cmd, debug_socket=debug_socket, |
| port=args.port, run_as_cmd=cmd_prefix) |
| else: |
| print "Connecting to tracing pid {} using local port {}".format(tracer_pid, args.port) |
| gdbrunner.forward_gdbserver_port(device, local=args.port, |
| remote="tcp:{}".format(args.port)) |
| |
| # Find where gdb is |
| if sys.platform.startswith("linux"): |
| platform_name = "linux-x86" |
| elif sys.platform.startswith("darwin"): |
| platform_name = "darwin-x86" |
| else: |
| sys.exit("Unknown platform: {}".format(sys.platform)) |
| |
| gdb_path = os.path.join(root, "prebuilts", "gdb", platform_name, "bin", |
| "gdb") |
| # Generate a gdb script. |
| setup_commands = generate_setup_script(gdbpath=gdb_path, |
| sysroot=sysroot, |
| binary_file=binary_file, |
| is64bit=is64bit, |
| port=args.port, |
| debugger=args.setup_forwarding or "gdb") |
| |
| if not args.setup_forwarding: |
| # Print a newline to separate our messages from the GDB session. |
| print("") |
| |
| # Start gdb. |
| gdbrunner.start_gdb(gdb_path, setup_commands) |
| else: |
| print("") |
| print setup_commands |
| print("") |
| if args.setup_forwarding == "vscode": |
| print textwrap.dedent(""" |
| Paste the above json into .vscode/launch.json and start the debugger as |
| normal. Press enter in this terminal once debugging is finished to shutdown |
| the gdbserver and close all the ports.""") |
| else: |
| print textwrap.dedent(""" |
| Paste the above gdb commands into the gdb frontend to setup the gdbserver |
| connection. Press enter in this terminal once debugging is finished to |
| shutdown the gdbserver and close all the ports.""") |
| print("") |
| raw_input("Press enter to shutdown gdbserver") |
| |
| if __name__ == "__main__": |
| main() |