JJSave/tools/parse_logcpu.py

""" Parse LOGCPU.TXT from dosbox-x (LOGL)
"""
import sys

logfile = sys.argv[1]

with open(logfile, "r") as f:
	openfiles = 0
	lineno = 0

	for line in f:
		lineno += 1

		# Skip empty lines
		if not line.strip():
			continue

		# Skip comments
		if line.startswith("//"):
			continue

		# Parse line
		# 0277:00000B69  int  21                                                 CD 21                 EAX:00003D00 EBX:00003C36 ECX:00000000 EDX:00003E92 ESI:00003D4B EDI:00003E62 EBP:00003C36 ESP:00003C34 DS:028F ES:028F FS:0337 GS:02BF SS:028F CF:0 ZF:1 SF:0 OF:0 AF:0 PF:1 IF:1 TF:0 VM:0 FLG:00003246 CR0:00000011
		instruction = line[15:15+32]
		eax = line[97:97+8]
		ax  = eax[4:]
		ah  = ax[0:2]
		al  = ax[2:]

		ebx = line[110:110+8]
		bx  = ebx[4:]
		bh  = bx[0:2]
		bl  = bx[2:]

		ecx = line[123:123+8]
		cx  = ecx[4:]
		ch  = cx[0:2]
		cl  = cx[2:]

		edx = line[136:136+8]
		dx  = edx[4:]
		dh  = dx[0:2]
		dl  = dx[2:]

		ds  = line[200:200+4]

		if instruction.startswith("call 0000199E"):
			print(f"{lineno:5d} call 0000199E")
			continue

		if not instruction.startswith("int  21"):
			continue

		if ah == "2C":
			print(f"{lineno:5d} Get system time")

		# create file
		elif ah == "3C":
			print(f"{lineno:5d} Create")

		# open file
		elif ah == "3D":
			openfiles += 1
			print(f"{lineno:5d} Open")

		# close file
		elif ah == "3E":
			openfiles -= 1
			print(f"{lineno:5d} Close handle:{bx}")

		# read
		elif ah == "3F":
			print(f"{lineno:5d} Read  handle:{bx} no:0x{cx} to:{ds}:{dx}")

		# write file
		elif ah == "40":
			print(f"{lineno:5d} Write handle:{bx} no:0x{cx} from:{ds}:{dx}")

		# delete file
		elif ah == "41":
			print(f"{lineno:5d} Delete")

		# seek
		elif ah == "42":
			print(f"{lineno:5d} Seek  handle:{bx}", int(f"{cx}{dx}", 16), "from", end=' ')
			if al == "00":
				print("start")
			elif al == "01":
				print("current")
			elif al == "02":
				print("end")
			else:
				print(f"WTF ({al})")

		elif ah == "44":
			print(f"{lineno:5d} IOCTL Write")

		else:
			print(f"{lineno:5d} TODO {ah:04X}")

	print(openfiles)