marvell/swd/tools/CpDumpDecoder/uncprdp.sh

#!/bin/sh
set -e

peek4()
{
    FILE="$1"
    OFFSET="$2"
    COUNT="$3"
    if [ -z "$OFFSET" ]; then
	OFFSET=0
    fi
    if [ -z "$COUNT" ]; then
	COUNT=1
    fi
    dd if="$FILE" bs=4 count=$COUNT skip=$(($OFFSET / 4)) status=none | hexdump -v -e '/4 "%08X\n"'
}

while [ -n "$1" ]; do
    BIN="$1"
    shift
    MAGIC="$(peek4 "$BIN")"
    if [ "$MAGIC" != "43504450" ]; then # CPDP
	echo "$BIN is not a CP ramdump file!"
	continue
    fi
    NR_FILES="$(peek4 "$BIN" 4)"
    NR_FILES=$((0x$NR_FILES))
    if [ $NR_FILES -eq 0 ]; then
	echo "$BIN contains no dump files"
	continue
    else
	echo "$BIN contains $NR_FILES dump files"
    fi
    OUTDIR="${BIN%.bin}-unpacked"
    mkdir -p "$OUTDIR"
    N=0
    for I in `seq 0 $(($NR_FILES - 1))`; do
	OFS=$(($I * 136 + 8))
	FNAME="$(printf '%s' "$(dd if="$BIN" bs=1 count=128 skip=$OFS status=none)")"
	OFS=$(($OFS + 128))
	FILEOFS=$((0x`peek4 "$BIN" $OFS`))
	OFS=$(($OFS + 4))
	FILELEN=$((0x`peek4 "$BIN" $OFS`))
	echo "$I. $FNAME|$FILEOFS|$FILELEN"
	if [ $FILELEN -ne 0 ]; then
	    tail -c +$(($FILEOFS + 1)) "$BIN" | head -c $FILELEN > "$OUTDIR/$FNAME"
	    N=$(($N + 1))
	fi
    done
    echo "$N dump files unpacked under $OUTDIR"
    BASE="$(basename "$BIN")"
    SFX="$(echo "$BASE" | sed 's/^COM_DDR_//')"
    if [ -n "$SFX" -a "$SFX" != "$BASE" ]; then
	DIR="$(dirname "$BIN")"
	if [ -e "$OUTDIR/com_DSP_DDR.bin" -o -e "$OUTDIR/com_dsp_ddr.bin" ]; then
	    rm -fv "$DIR"/*"DSP_DDR_$SFX" "$DIR"/*"dsp_ddr_$SFX"
	else
	    mv -v "$DIR"/*"DSP_DDR_$SFX" "$DIR"/*"dsp_ddr_$SFX" "$OUTDIR" || true
	fi
	for C in "$DIR"/com_dspdump_*; do
	    [ -e "$C" ] && mv -v "$C" "$OUTDIR" || true
	done
	for C in "$DIR"/com_extra_*; do
	    [ -e "$C" ] && mv -v "$C" "$OUTDIR" || true
	done
    fi
done