# -*- shell-script -*- # handle.sh - gdb-like "handle" debugger command # # Copyright (C) 2002-2006, 2008, 2010, 2016 Rocky Bernstein # # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License as # published by the Free Software Foundation; either version 2, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; see the file COPYING. If not, write to # the Free Software Foundation, 59 Temple Place, Suite 330, Boston, # MA 02111 USA. # Process debugger "handle" command. _Dbg_help_add handle \ "**handle** *signal* *action* Specify how to handle *signal*. *signal* is a signal name like SIGSEGV, but numeric signals like 11 (which is usually equivalent on \*nix systems) is okay too. *action* is one of \"stop\", \"nostop\", \"print\", and \"noprint\". \"Stop\" indicates entering debugger if this signal happens. \"Print\" indicates printing a message if this signal is encountered. \"Stack\" is like \"print\" but except the entire call stack is printed. Prefacing these actions with \"no\" indicates not to do the indicated action." _Dbg_do_handle() { typeset sig=$1 typeset cmd=$2 typeset -i signum if [[ -z $sig ]] ; then _Dbg_errmsg "Missing signal name or signal number." return 1 fi if [[ $sig == $int_pat ]]; then signame=$(_Dbg_signum2name $sig) if (( $? != 0 )) ; then _Dbg_errmsg "Bad signal number: $sig" return 2 fi signum=sig else typeset signum; signum=$(_Dbg_name2signum $sig) if (( $? != 0 )) ; then _Dbg_errmsg "Bad signal name: $sig" return 3 fi fi case $cmd in nop | nopr | nopri | noprin | noprint ) _Dbg_sig_print[signum]='noprint' # noprint implies nostop _Dbg_sig_stop[signum]='stop' ;; nosta | nostac | nostack ) _Dbg_sig_show_stack[signum]='nostack' ;; nosto | nostop ) _Dbg_sig_stop[signum]='nostop' ;; p | pr | pri | prin | print ) _Dbg_sig_print[signum]='print' ;; sta | stac | stack ) _Dbg_sig_show_stack[signum]='showstack' ;; sto | stop ) _Dbg_sig_stop[signum]='stop' # stop keyword implies print _Dbg_sig_print[signum]='print' ;; * ) if (( !cmd )) ; then _Dbg_errmsg \ "Need to give a command: stop, nostop, stack, nostack, print, noprint" return 4 else _Dbg_errmsg "Invalid handler command $cmd" return 5 fi ;; esac return 0 }