#!/usr/bin/python3
import sys


def help():
    print('Usage: mkasmmsg.py -b<32/64> <format> <message>')


if len(sys.argv) != 4:
    help()
    sys.exit(1)

format = sys.argv[2]
msg = sys.argv[3]
base = 0xb8000

index = {
    '1': 'word',
    '2': 'dword',
    '4': 'qword'
}

command = 'mov {} [{}], 0x{}'

if sys.argv[1] == '-b32':
    groupsize = 2
elif sys.argv[1] == '-b64':
    groupsize = 4
else:
    help()
    sys.exit(1)


def chunk(iterator, n):
    for i in range(0, len(iterator), n):
        yield iterator[i:i + n]


raw_nums = []

for char in list(msg):
    raw_nums.append(format + hex(ord(char))[2:])

total = 0

for num, block in enumerate(list(chunk(raw_nums, groupsize))):
    if len(block) == 3:
        total += 2
        print(command.format('word', hex(base + total), block[0]))
        total += 4
        print(command.format('dword', hex(base + total), ''.join(block[1:])))
        continue
    total += len(block) * groupsize
    print(command.format(index[str(len(block))], hex(base + total), ''.join(block)))