11801 Memory Dump Tool V0.1

#!/usr/bin/python
#11801 memory dump cleanup tool V0.1
#(C) David Carr 2019
#USE AT YOUR OWN RISK --- VERY MINIMALLY TESTED

import struct
import sys

f = open(sys.argv[1])

x = f.read()

#ram
ram = {}

#search for start of address line
start = 0
while True:
	start = x.find("1 RM", start+1)
	if start == -1:
		break

	line = x[start:start+38]
	#print line

	#parse it
	addr = int(line[6:14],16)

	bytes = []

	for i in range(8):
		bytes += [int(line[15+3*i:17+3*i], 16)]

	#for i in range(8):
	#	print "%02x " % bytes[i],
	#print

	#store it
	if addr in ram: #if a duplicate, check for match
		assert(bytes == ram[addr])
	else: #if new...
		ram[addr] = bytes

#check that addresses are contiguous
addrs = sorted(ram.keys())
for i in range(len(addrs)-1):
	assert(addrs[i] == addrs[i+1] - 8)
print "Addresses contiguous."

#calculate size
start = addrs[0]
end =  addrs[-1]
print "Start: %x" % start
print "End: %x" % end
calc_size = end-start+8

#check actual size
actual_size = 0
for a in ram.keys():
	actual_size += len(ram[a])

print "Calc size: %d" % calc_size
print "Acutal size: %d" % actual_size
assert(calc_size == actual_size)

#write out
byte_count = 0
outfile = open(sys.argv[1]+".bin","wb")
for a in addrs:
	#print "%x" % a
	for b in ram[a]:
		outfile.write(struct.pack("B",b))
		byte_count += 1
		#print "%02x" % b,
	#print "\n"
print "Bytes written: %d" % byte_count
assert (calc_size == byte_count)