example/expression/get_read_write.py
from __future__ import print_function
from future.utils import viewitems
from miasm.arch.x86.arch import mn_x86
from miasm.expression.expression import get_rw
from miasm.arch.x86.lifter_model_call import LifterModelCall_x86_32
from miasm.core.locationdb import LocationDB
loc_db = LocationDB()
print("""
Simple expression manipulation demo.
Get read/written registers for a given instruction
""")
arch = mn_x86
lifter = LifterModelCall_x86_32(loc_db)
ircfg = lifter.new_ircfg()
instr = arch.fromstring('LODSB', loc_db, 32)
instr.offset, instr.l = 0, 15
lifter.add_instr_to_ircfg(instr, ircfg)
print('*' * 80)
for lbl, irblock in viewitems(ircfg.blocks):
print(irblock)
for assignblk in irblock:
rw = assignblk.get_rw()
for dst, reads in viewitems(rw):
print('read: ', [str(x) for x in reads])
print('written:', dst)
print()
open('graph_instr.dot', 'w').write(ircfg.dot())