Add --lldb to gdbclient.py
Test: `gdbclient.py --lldb -r /system/bin/toybox` and try `b main` `c` Test: `/data/local/tmp/arm64-lldb-server gdbserver :5039 /system/bin/toybox` and `gdbclient.py --lldb -p 4909` Change-Id: If7b6895e9c778cdee3764a4058cf70238bdd6b8a
This commit is contained in:
Haibo Huang
@@ -33,6 +33,27 @@ import gdbrunner
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g_temp_dirs = []
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def read_toolchain_config(root):
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"""Finds out current toolchain path and version."""
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def get_value(str):
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return str[str.index('"') + 1:str.rindex('"')]
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config_path = os.path.join(root, 'build', 'soong', 'cc', 'config',
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'global.go')
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with open(config_path) as f:
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contents = f.readlines()
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clang_base = ""
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clang_version = ""
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for line in contents:
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line = line.strip()
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if line.startswith('ClangDefaultBase'):
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clang_base = get_value(line)
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elif line.startswith('ClangDefaultVersion'):
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clang_version = get_value(line)
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return (clang_base, clang_version)
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def get_gdbserver_path(root, arch):
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path = "{}/prebuilts/misc/gdbserver/android-{}/gdbserver{}"
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if arch.endswith("64"):
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@@ -41,6 +62,17 @@ def get_gdbserver_path(root, arch):
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return path.format(root, arch, "")
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def get_lldb_server_path(root, clang_base, clang_version, arch):
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arch = {
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'arm': 'arm',
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'arm64': 'aarch64',
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'x86': 'i386',
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'x86_64': 'x86_64',
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}[arch]
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return os.path.join(root, clang_base, "linux-x86",
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clang_version, "runtimes_ndk_cxx", arch, "lldb-server")
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def get_tracer_pid(device, pid):
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if pid is None:
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return 0
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@@ -77,6 +109,10 @@ def parse_args():
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".vscode/launch.json configuration needed to connect the debugging " +
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"client to the server."))
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lldb_group = parser.add_mutually_exclusive_group()
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lldb_group.add_argument("--lldb", action="store_true", help="Use lldb.")
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lldb_group.add_argument("--no-lldb", action="store_true", help="Do not use lldb.")
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parser.add_argument(
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"--env", nargs=1, action="append", metavar="VAR=VALUE",
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help="set environment variable when running a binary")
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@@ -300,7 +336,19 @@ end
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return gdb_commands
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def generate_setup_script(gdbpath, sysroot, linker_search_dir, binary_file, is64bit, port, debugger, connect_timeout=5):
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def generate_lldb_script(sysroot, binary_name, port, solib_search_path):
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commands = []
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commands.append(
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'settings append target.exec-search-paths {}'.format(' '.join(solib_search_path)))
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commands.append('target create {}'.format(binary_name))
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commands.append('target modules search-paths add / {}/'.format(sysroot))
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commands.append('gdb-remote {}'.format(port))
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return '\n'.join(commands)
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def generate_setup_script(debugger_path, sysroot, linker_search_dir, binary_file, is64bit, port, debugger, connect_timeout=5):
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# Generate a setup script.
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# TODO: Detect the zygote and run 'art-on' automatically.
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root = os.environ["ANDROID_BUILD_TOP"]
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@@ -323,9 +371,12 @@ def generate_setup_script(gdbpath, sysroot, linker_search_dir, binary_file, is64
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if debugger == "vscode":
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return generate_vscode_script(
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gdbpath, root, sysroot, binary_file.name, port, dalvik_gdb_script, solib_search_path)
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debugger_path, root, sysroot, binary_file.name, port, dalvik_gdb_script, solib_search_path)
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elif debugger == "gdb":
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return generate_gdb_script(root, sysroot, binary_file.name, port, dalvik_gdb_script, solib_search_path, connect_timeout)
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elif debugger == 'lldb':
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return generate_lldb_script(
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sysroot, binary_file.name, port, solib_search_path)
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else:
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raise Exception("Unknown debugger type " + debugger)
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@@ -369,60 +420,78 @@ def do_main():
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is64bit = arch.endswith("64")
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# Make sure we have the linker
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llvm_readobj_path = os.path.join(root, "prebuilts", "clang", "host", platform_name,
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"llvm-binutils-stable", "llvm-readobj")
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clang_base, clang_version = read_toolchain_config(root)
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toolchain_path = os.path.join(root, clang_base, platform_name,
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clang_version)
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llvm_readobj_path = os.path.join(toolchain_path, "bin", "llvm-readobj")
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interp = gdbrunner.get_binary_interp(binary_file.name, llvm_readobj_path)
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linker_search_dir = ensure_linker(device, sysroot, interp)
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tracer_pid = get_tracer_pid(device, pid)
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use_lldb = args.lldb
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if tracer_pid == 0:
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cmd_prefix = args.su_cmd
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if args.env:
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cmd_prefix += ['env'] + [v[0] for v in args.env]
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# Start gdbserver.
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gdbserver_local_path = get_gdbserver_path(root, arch)
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gdbserver_remote_path = "/data/local/tmp/{}-gdbserver".format(arch)
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gdbrunner.start_gdbserver(
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device, gdbserver_local_path, gdbserver_remote_path,
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target_pid=pid, run_cmd=run_cmd, debug_socket=debug_socket,
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port=args.port, run_as_cmd=cmd_prefix)
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if use_lldb:
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server_local_path = get_lldb_server_path(
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root, clang_base, clang_version, arch)
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server_remote_path = "/data/local/tmp/{}-lldb-server".format(
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arch)
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else:
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print "Connecting to tracing pid {} using local port {}".format(tracer_pid, args.port)
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server_local_path = get_gdbserver_path(root, arch)
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server_remote_path = "/data/local/tmp/{}-gdbserver".format(
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arch)
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gdbrunner.start_gdbserver(
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device, server_local_path, server_remote_path,
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target_pid=pid, run_cmd=run_cmd, debug_socket=debug_socket,
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port=args.port, run_as_cmd=cmd_prefix, lldb=use_lldb)
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else:
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print(
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"Connecting to tracing pid {} using local port {}".format(
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tracer_pid, args.port))
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gdbrunner.forward_gdbserver_port(device, local=args.port,
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remote="tcp:{}".format(args.port))
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gdb_path = os.path.join(root, "prebuilts", "gdb", platform_name, "bin",
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"gdb")
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if use_lldb:
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debugger_path = os.path.join(toolchain_path, "bin", "lldb")
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debugger = 'lldb'
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else:
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debugger_path = os.path.join(
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root, "prebuilts", "gdb", platform_name, "bin", "gdb")
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debugger = args.setup_forwarding or "gdb"
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# Generate a gdb script.
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setup_commands = generate_setup_script(gdbpath=gdb_path,
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setup_commands = generate_setup_script(debugger_path=debugger_path,
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sysroot=sysroot,
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linker_search_dir=linker_search_dir,
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binary_file=binary_file,
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is64bit=is64bit,
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port=args.port,
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debugger=args.setup_forwarding or "gdb")
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debugger=debugger)
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if not args.setup_forwarding:
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if use_lldb or not args.setup_forwarding:
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# Print a newline to separate our messages from the GDB session.
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print("")
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# Start gdb.
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gdbrunner.start_gdb(gdb_path, setup_commands)
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gdbrunner.start_gdb(debugger_path, setup_commands, lldb=use_lldb)
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else:
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print("")
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print setup_commands
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print(setup_commands)
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print("")
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if args.setup_forwarding == "vscode":
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print textwrap.dedent("""
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print(textwrap.dedent("""
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Paste the above json into .vscode/launch.json and start the debugger as
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normal. Press enter in this terminal once debugging is finished to shutdown
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the gdbserver and close all the ports.""")
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the gdbserver and close all the ports."""))
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else:
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print textwrap.dedent("""
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print(textwrap.dedent("""
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Paste the above gdb commands into the gdb frontend to setup the gdbserver
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connection. Press enter in this terminal once debugging is finished to
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shutdown the gdbserver and close all the ports.""")
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shutdown the gdbserver and close all the ports."""))
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print("")
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raw_input("Press enter to shutdown gdbserver")
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