PSXHAX

#!/usr/bin/env python2.7
# (c) flatz

import sys, os, struct
import argparse
import shutil

from hexdump import hexdump
from pprint import pprint

def align_up(x, alignment):
    return (x + (alignment - 1)) & ~(alignment - 1)

def align_down(x, alignment):
    return x & ~(alignment - 1)

def is_intervals_overlap(p1, p2):
    return p1[0] <= p2[1] and p1[1] <= p2[0]

def check_file_magic(f, expected_magic):
    old_offset = f.tell()
    try:
        magic = f.read(len(expected_magic))
    except:
        return False
    finally:
        f.seek(old_offset)
    return magic == expected_magic

def check_sdk_version(sdk_version):
    if len(sdk_version) != 10:
        return False
    parts = sdk_version.split('.', 2)
    if len(parts) != 3:
        return False
    try:
        lengths = [2...