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 ircfg.blocks.iteritems():
    print irblock
    for assignblk in irblock:
        rw = assignblk.get_rw()
        for dst, reads in rw.iteritems():
            print 'read:   ', [str(x) for x in reads]
            print 'written:', dst
            print

open('graph_instr.dot', 'w').write(ircfg.dot())