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#!/usr/bin/env python
#-*- coding:utf-8 -*-
from miasm2.expression.expression import *
from miasm2.ir.ir import ir, irbloc
from miasm2.ir.analysis import ira
from miasm2.arch.mips32.sem import ir_mips32l, ir_mips32b
from miasm2.arch.mips32.regs import *
from miasm2.core.asmbloc import expr_is_int_or_label, expr_is_label
class ir_a_mips32l(ir_mips32l, ira):
def __init__(self, symbol_pool=None):
ir_mips32l.__init__(self, symbol_pool)
self.ret_reg = self.arch.regs.V0
# for test XXX TODO
def set_dead_regs(self, b):
pass
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)
for irb in ir_blocs:
# print 'X'*40
# print irb
pc_val = None
lr_val = None
for exprs in irb.irs:
for e in exprs:
if e.dst == PC:
pc_val = e.src
if e.dst == RA:
lr_val = e.src
#print "XXX", pc_val, lr_val
if pc_val is None or lr_val is None:
continue
if not expr_is_int_or_label(lr_val):
continue
if expr_is_label(lr_val):
lr_val = ExprInt32(lr_val.name.offset)
l = bloc.lines[-2]
#print 'TEST', l, hex(lr_val.arg), hex(l.offset + 8)
#print lr_val.arg, hex(l.offset + l.l)
if lr_val.arg != l.offset + 8:
fds
continue
# print 'IS CALL!'
lbl = bloc.get_next()
new_lbl = self.gen_label()
irs = self.call_effects(pc_val)
irs.append([ExprAff(self.IRDst, ExprId(lbl, size=self.pc.size))])
nbloc = irbloc(new_lbl, irs)
nbloc.lines = [l]
self.blocs[new_lbl] = nbloc
irb.dst = ExprId(new_lbl, size=self.pc.size)
def get_out_regs(self, b):
return set([self.ret_reg, self.sp])
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_mips32b(ir_mips32b, ir_a_mips32l):
def __init__(self, symbol_pool=None):
ir_mips32b.__init__(self, symbol_pool)
self.ret_reg = self.arch.regs.V0
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