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from miasm2.expression.expression import ExprAff, ExprOp
from miasm2.ir.ir import AssignBlock
from miasm2.ir.analysis import ira
from miasm2.arch.ppc.sem import ir_ppc32b
class ir_a_ppc32b(ir_ppc32b, ira):
def __init__(self, *args):
super(ir_a_ppc32b, self).__init__(*args)
self.ret_reg = self.arch.regs.R3
# for test XXX TODO
def set_dead_regs(self, irblock):
pass
def get_out_regs(self, _):
return set([self.ret_reg, self.sp])
def add_unused_regs(self):
leaves = [self.blocks[label] for label in self.g.leafs()]
for irblock in leaves:
self.set_dead_regs(irblock)
def call_effects(self, ad, instr):
return [AssignBlock([ExprAff(self.ret_reg, ExprOp('call_func_ret', ad,
self.sp,
self.arch.regs.R3,
self.arch.regs.R4,
self.arch.regs.R5,
)),
ExprAff(self.sp, ExprOp('call_func_stack',
ad, self.sp)),
],
instr
)]
def pre_add_instr(self, block, instr, assignments, ir_blocks_all, gen_pc_update):
"""Replace function call with corresponding call effects,
inside the IR block"""
if not instr.is_subcall():
return False
call_effects = self.call_effects(instr.getdstflow(None)[0], instr)
assignments+= call_effects
return True
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
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