GNU gdbserver (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. gdbserver is free software, covered by the GNU General Public License. This gdbserver was configured as "x86_64-linux-gnu"

Usage: gdbserver [OPTIONS] COMM PROG [ARGS ...] gdbserver [OPTIONS] --attach COMM PID gdbserver [OPTIONS] --multi COMM COMM may either be a tty device (for serial debugging), HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use stdin/stdout of gdbserver. PROG is the executable program. ARGS are arguments passed to inferior. PID is the process ID to attach to, when --attach is specified. Operating modes: --attach Attach to running process PID. --multi Start server without a specific program, and only quit when explicitly commanded. --once Exit after the first connection has closed. --help Print this message and then exit. --version Display version information and exit. Other options: --wrapper WRAPPER -- Run WRAPPER to start new programs. --disable-randomization Run PROG with address space randomization disabled. --no-disable-randomization Don't disable address space randomization when starting PROG. Debug options: --debug Enable general debugging output. --debug-format=opt1[,opt2,...] Specify extra content in debugging output. Options: all none timestamp --remote-debug Enable remote protocol debugging output. --disable-packet=opt1[,opt2,...] Disable support for RSP packets or features. Options: vCont, Tthread, qC, qfThreadInfo and threads (disable all threading packets). For more information, consult the GDB manual (available as on-line info or a printed manual). Report bugs to "<http://www.gnu.org/software/gdb/bugs/>".