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from __future__ import print_function
from future.utils import viewitems
from miasm2.arch.x86.arch import mn_x86
from miasm2.expression.expression import get_rw
from miasm2.arch.x86.ira import ir_a_x86_32
from miasm2.core.locationdb import LocationDB
loc_db = LocationDB()
print("""
Simple expression manipulation demo.
Get read/written registers for a given instruction
""")
arch = mn_x86
ir_arch = ir_a_x86_32(loc_db)
ircfg = ir_arch.new_ircfg()
instr = arch.fromstring('LODSB', loc_db, 32)
instr.offset, instr.l = 0, 15
ir_arch.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())
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