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#!/usr/bin/env python
#-*- coding:utf-8 -*-
from miasm2.expression.expression import *
from miasm2.core.graph import DiGraph
from miasm2.ir.ir import ir, irbloc
from miasm2.ir.analysis import ira
from miasm2.arch.x86.sem import ir_x86_16, ir_x86_32, ir_x86_64
class ir_a_x86_16(ir_x86_16, ira):
def __init__(self, symbol_pool=None):
ir_x86_16.__init__(self, symbol_pool)
self.ret_reg = self.arch.regs.AX
# for test XXX TODO
def set_dead_regs(self, b):
b.rw[-1][1].add(self.arch.regs.zf)
b.rw[-1][1].add(self.arch.regs.of)
b.rw[-1][1].add(self.arch.regs.pf)
b.rw[-1][1].add(self.arch.regs.cf)
b.rw[-1][1].add(self.arch.regs.nf)
b.rw[-1][1].add(self.arch.regs.af)
def get_out_regs(self, b):
return set([self.ret_reg, self.sp])
def add_unused_regs(self):
leaves = [self.blocs[n] for n in self.g.leafs()]
for b in leaves:
self.set_dead_regs(b)
def call_effects(self, ad):
irs = [[ExprAff(self.ret_reg, ExprOp('call_func_ret', ad, self.sp)),
ExprAff(self.sp, ExprOp('call_func_stack', ad, self.sp)),
]]
return irs
def post_add_bloc(self, bloc, ir_blocs):
ir.post_add_bloc(self, bloc, ir_blocs)
if not bloc.lines:
return
l = bloc.lines[-1]
sub_call_dst = None
if not l.is_subcall():
return
sub_call_dst = l.args[0]
if self.ExprIsLabel(sub_call_dst):
sub_call_dst = sub_call_dst.name
for b in ir_blocs:
l = b.lines[-1]
sub_call_dst = None
if not l.is_subcall():
continue
sub_call_dst = l.args[0]
if self.ExprIsLabel(sub_call_dst):
sub_call_dst = sub_call_dst.name
lbl = bloc.get_next()
new_lbl = self.gen_label()
irs = self.call_effects(l.args[0])
nbloc = irbloc(new_lbl, ExprId(lbl, size=self.pc.size), irs)
nbloc.lines = [l]
self.blocs[new_lbl] = nbloc
b.dst = ExprId(new_lbl, size=self.pc.size)
return
class ir_a_x86_32(ir_x86_32, ir_a_x86_16):
def __init__(self, symbol_pool=None):
ir_x86_32.__init__(self, symbol_pool)
self.ret_reg = self.arch.regs.EAX
def sizeof_char(self):
return 8
def sizeof_short(self):
return 16
def sizeof_int(self):
return 32
def sizeof_long(self):
return 32
def sizeof_pointer(self):
return 32
class ir_a_x86_64(ir_x86_64, ir_a_x86_16):
def __init__(self, symbol_pool=None):
ir_x86_64.__init__(self, symbol_pool)
self.ret_reg = self.arch.regs.RAX
def call_effects(self, ad):
irs = [[ExprAff(self.ret_reg, ExprOp('call_func_ret', ad, self.sp,
self.arch.regs.RCX,
self.arch.regs.RDX,
self.arch.regs.R8,
self.arch.regs.R9,
)),
ExprAff(self.sp, ExprOp('call_func_stack', ad, self.sp)),
]]
return irs
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