restruct.php

<?php

$target = isset($argv[1]) ? $argv[1] : "modem";

$out = shell_exec("readelf -l ${target}.mdt 2>/dev/null");
// printf($out);
$seg = array();
$lines = split("\n", $out);
for ($i = count($lines) - 1; $i >= 0; $i--) {
    if (!strstr($lines[$i], "NULL") &&
        !strstr($lines[$i], "LOAD") &&
        !strstr($lines[$i], "DYNAMIC") &&
        !strstr($lines[$i], "INTERP")) {
        unset($lines[$i]);
        continue;
    }
    $seg []= trim($lines[$i]);
}
$seg = array_reverse($seg);
unlink("${target}.out");
$fp = fopen("${target}.out", "wb");
for ($i = 0; $i < count($seg) - 1; $i++) {
    list($_a, $offset, $_c, $_d, $size) = sscanf($seg[$i], "%s %x %x %x %x");
    if ($size == 0)
        continue;
    $offset_fp = ftell($fp);
    if ($offset > $offset_fp) {
        $zero = "";
        for ($n = 0; $n < $offset - $offset_fp; $n++)
            $zero .= "\0";
        fwrite($fp, $zero);
    }
    fseek($fp, $offset);
    $src = sprintf("${target}.b%02d", $i);
    printf("%s <= %s\n", "${target}.out", $src);
    fwrite($fp, file_get_contents($src));
}
fclose($fp);