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#!/bin/sh
#
# %CopyrightBegin%
#
# Copyright Ericsson AB 2003-2011. All Rights Reserved.
#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
# compliance with the License. You should have received a copy of the
# Erlang Public License along with this software. If not, it can be
# retrieved online at http://www.erlang.org/.
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# %CopyrightEnd%
#
#
# This is a script to start Erlang/OTP for debugging. PATH is set to
# include this script so if slave nodes are started they will use this
# script as well.
#
#  usage:  cerl [ OPTIONS ] [ ARGS ]
#
#  The OPTIONS are
#
#   -rootdir $MYROOTDIR
#               Run an installed emulator built from this source
#   -debug      Run debug compiled emulator
#   -gdb        Run the debug compiled emulator in emacs and gdb.
#               You have to start beam in gdb using "run".
#   -break F    Run the debug compiled emulator in emacs and gdb and set break.
#               The session is started, i.e. "run" is already don for you.
#   -xxgdb      FIXME currently disabled
#   -purify     Run emulator compiled for purify
#   -quantify   Run emulator compiled for quantify
#   -purecov    Run emulator compiled for purecov
#   -gcov       Run emulator compiled for gcov
#   -valgrind   Run emulator compiled for valgrind
#   -lcnt	Run emulator compiled for lock counting
#   -nox        Unset the DISPLAY variable to disable us of X Windows
#
# FIXME For GDB you can also set the break point using "-break FUNCTION".
# FIXME For GDB you can also point out your own .gdbini......

# These are marked for export
export ROOTDIR
export PROGNAME
export EMU
export BINDIR
export PATH

cargs=
xargs=
cxargs_add() {
    while [ $# -gt 0 ]; do
	cargs="$cargs $1"
	xargs="$xargs $1"
	shift
    done
}

eeargs=
eeargs_add() {
    while [ $# -gt 0 ]; do
	cargs="$cargs $1"
	eeargs="$eeargs $1"
	shift
    done
}

core=

GDB=
GDBBP=
GDBARGS=
TYPE=
debug=
run_valgrind=no

# Default rootdir
ROOTDIR=%SRC_ROOTDIR%
BINDIR="$ROOTDIR/bin/`$ROOTDIR/erts/autoconf/config.guess`"
#BINDIR="$ROOTDIR/bin/%TARGET%"
PROGNAME=$ROOTDIR/bin/cerl
EMU=beam

PRELOADED=$ROOTDIR/erts/preloaded/ebin


while [ $# -gt 0 ]; do
    case "$1" in
	+*)
      # A system parameter!
	    cxargs_add $1
	    shift
      # If next argument does not begin with a hyphen or a plus,
      # it is used as the value of the system parameter.
	    if [ $# -gt 0 ]; then
		case $1 in
		    -*|+*)
			;;
		    *)
			cxargs_add $1
			shift;;
		esac
	    fi;;
	"-instr")
	    cxargs_add $1
	    shift
	    ;;
	"-target")
	    shift
	    BINDIR="$ROOTDIR/bin/$1"
	    shift
	    ;;
	"-rootdir")
	    shift
	    cargs="$cargs -rootdir $1"
	    ROOTDIR="$1"
	    BINDIR=$ROOTDIR/erts-%VSN%/bin
	    shift
	    ;;
	"-display")
	    shift
	    DISPLAY="$1"
	    export DISPLAY
	    shift
	    ;;
	"-nox")
	    shift
	    unset DISPLAY
	    ;;
	"-smp")
	    shift
	    if [ $# -le 0 ]; then
		eeargs_add -smp
	    else
		case $1 in
		    disable)
			shift
			eeargs_add -smpdisable
			;;
		    enable)
			shift
			eeargs_add -smp
			;;
		    *)
			eeargs_add -smp
		esac
	    fi
	    ;;
	"-smpdisable")
	    shift
	    eeargs_add -smpdisable
	    ;;
	"-lcnt")
	    shift
	    cargs="$cargs -lcnt"
	    TYPE=.lcnt
	    ;;
	"-gprof")
	    shift
	    cargs="$cargs -gprof"
	    TYPE=.gprof
	    ;;
	"-debug")
	    shift
	    cargs="$cargs -debug"
	    TYPE=.debug
	    ;;
	"-gdb")
	    shift
	    GDB=gdb
	    ;;
	"-break")
	    shift
	    GDB=gdb
	    GDBBP="$GDBBP (insert-string \"break $1\") (comint-send-input)"
	    shift
	    ;;
	"-core")
	    shift
	    GDB=gdb
	    core="$1"
	    shift
	    ;;
#	"-xxgdb")
#	    shift
#	    GDB=xxgdb
#	    ;;
	"-purify")
	    shift
	    cargs="$cargs -purify"
	    TYPE=.purify
	    ;;
	"-quantify")
	    shift
	    cargs="$cargs -quantify"
	    TYPE=.quantify
	    ;;
	"-purecov")
	    shift
	    cargs="$cargs -purecov"
	    TYPE=.purecov
	    ;;
	"-gcov")
	    shift
	    cargs="$cargs -gcov"
	    TYPE=.gcov
	    ;;
	"-valgrind")
	    shift
	    cargs="$cargs -valgrind"
	    TYPE=.valgrind
	    run_valgrind=yes
	    ;;
	*)
	    break
	    ;;
    esac
done


PATH=$BINDIR:$ROOTDIR/bin:$PATH
EXEC=$BINDIR/erlexec

PROGNAME="$PROGNAME $cargs"
EMU="$EMU$TYPE"
EMU_NAME=`$EXEC -emu_name_exit $eeargs`

if [ $run_valgrind != yes ]; then
    xargs="$xargs -pz $PRELOADED --"
fi
if [ "x$GDB" = "x" ]; then
    if [ $run_valgrind = yes ]; then
	valversion=`valgrind --version`
	valmajor=`echo $valversion | sed 's,[a-z]*\-\([0-9]*\).*,\1,'`
        valminor=`echo $valversion | sed 's,[a-z]*\-[0-9]*.\([0-9]*\).*,\1,'`
	emu_xargs=`echo $xargs | sed "s|+|-|g"`
	if [ "x$VALGRIND_LOG_XML" = "x" ]; then
	    valgrind_xml=
	    log_file_prefix="--log-file="
	else
	    export VALGRIND_LOG_XML
	    valgrind_xml="--xml=yes"
	    if [ $valmajor -gt 2 -a $valminor -gt 4 ]; then
		log_file_prefix="--xml-file="
	    else
		log_file_prefix="--log-file="
	    fi
	fi
	if [ "x$VALGRIND_LOG_DIR" = "x" ]; then
	    valgrind_log=
	else
	    if [ $valmajor -gt 2 -a $valminor -gt 4 ]; then
		valgrind_log="$log_file_prefix$VALGRIND_LOG_DIR/$VALGRIND_LOGFILE_PREFIX$VALGRIND_LOGFILE_INFIX$EMU_NAME.log.$$"
	    else
		valgrind_log="$log_file_prefix$VALGRIND_LOG_DIR/$VALGRIND_LOGFILE_PREFIX$VALGRIND_LOGFILE_INFIX$EMU_NAME.log"
	    fi
	fi
	if [ "x$VALGRIND_MISC_FLAGS" = "x" ]; then
	    valgrind_misc_flags=
	else
	    valgrind_misc_flags="$VALGRIND_MISC_FLAGS"
	fi
	beam_args=`$EXEC -emu_args_exit ${1+"$@"}`
	# Ahhhh... Need to quote $PROGNAME...
	early_beam_args=`echo $beam_args | sed "s|^\(.*-progname\).*$|\1|g"`
	late_beam_args=`echo $beam_args | sed "s|^$pre_beam_args.*\(-- -home.*\)$|\1|g"`
	
	exec valgrind $valgrind_xml $valgrind_log $valgrind_misc_flags $BINDIR/$EMU_NAME $emu_xargs $early_beam_args "$PROGNAME" $late_beam_args -pz $PRELOADED
    else
	exec $EXEC $eeargs $xargs ${1+"$@"}
    fi
else
    if [ "x$EMACS" = "x" ]; then
	EMACS=emacs
    fi
    
    case "x$core" in
	x)
	    # Get emu args to use from erlexec...
	    beam_args=`$EXEC -emu_args_exit ${1+"$@"}`
	    gdbcmd="(insert-string \"set args $beam_args\") \
                    (comint-send-input)"
	    ;;
	x/*)
	    gdbcmd="(insert-string \"core ${core}\") (comint-send-input)"
	    GDBBP=
	    ;;
	*)
	    dir=`pwd`
	    gdbcmd="(insert-string \"core ${dir}/${core}\") \
                    (comint-send-input)"
	    GDBBP=
	    ;;
    esac

    if [ "$EMACS_ANNOTATE_LEVEL" != "" ]; then
	GDBARGS="--annotate=$EMACS_ANNOTATE_LEVEL"
    else
        # Set annotation level for gdb in emacs 22 and higher. Seems to
        # be working with level 1 for emacs 22 and level 3 for emacs 23...
	emacs_major=`$EMACS --version | head -1 | sed 's,^[^0-9]*\([0-9]*\).*,\1,g'`
	if [ '!' -z "$emacs_major" -a $emacs_major -gt 22 ]; then
	    GDBARGS="--annotate=3 "
	elif [ '!' -z "$emacs_major" -a $emacs_major -gt 21 ]; then
	    GDBARGS="--annotate=1 "
	fi
    fi
    gdbcmd="$gdbcmd $GDBBP \
            (insert-string \"source $ROOTDIR/erts/etc/unix/etp-commands\") \
            (comint-send-input)"
    # Fire up gdb in emacs...
    exec $EMACS --eval "(progn (gdb \"gdb $GDBARGS$EMU_NAME\") $gdbcmd)"
fi