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from builtins import range
import logging
from miasm.jitter.jitload import Jitter, named_arguments
from miasm.core.utils import pck64, upck64
from miasm.arch.aarch64.sem import Lifter_Aarch64b, Lifter_Aarch64l
log = logging.getLogger('jit_aarch64')
hnd = logging.StreamHandler()
hnd.setFormatter(logging.Formatter("[%(levelname)-8s]: %(message)s"))
log.addHandler(hnd)
log.setLevel(logging.CRITICAL)
class jitter_aarch64l(Jitter):
max_reg_arg = 8
def __init__(self, loc_db, *args, **kwargs):
Jitter.__init__(self, Lifter_Aarch64l(loc_db), *args, **kwargs)
self.vm.set_little_endian()
def push_uint64_t(self, value):
self.cpu.SP -= 8
self.vm.set_mem(self.cpu.SP, pck64(value))
def pop_uint64_t(self):
value = self.vm.get_u64(self.cpu.SP)
self.cpu.SP += 8
return value
def get_stack_arg(self, index):
return self.vm.get_u64(self.cpu.SP + 8 * index)
# calling conventions
@named_arguments
def func_args_stdcall(self, n_args):
args = []
for i in range(min(n_args, self.max_reg_arg)):
args.append(getattr(self.cpu, 'X%d' % i))
for i in range(max(0, n_args - self.max_reg_arg)):
args.append(self.get_stack_arg(i))
ret_ad = self.cpu.LR
return ret_ad, args
def func_ret_stdcall(self, ret_addr, ret_value=None):
self.pc = self.cpu.PC = ret_addr
if ret_value is not None:
self.cpu.X0 = ret_value
return True
def get_arg_n_stdcall(self, index):
if index < self.max_reg_arg:
arg = self.cpu.get_gpreg()['X%d' % index]
else:
arg = self.get_stack_arg(index - self.max_reg_arg)
return arg
def func_prepare_stdcall(self, ret_addr, *args):
for index in range(min(len(args), 4)):
setattr(self.cpu, 'X%d' % index, args[index])
for index in range(4, len(args)):
self.vm.set_mem(self.cpu.SP + 8 * (index - 4), pck64(args[index]))
self.cpu.LR = ret_addr
func_args_systemv = func_args_stdcall
func_ret_systemv = func_ret_stdcall
get_arg_n_systemv = get_arg_n_stdcall
func_prepare_systemv = func_prepare_stdcall
def init_run(self, *args, **kwargs):
Jitter.init_run(self, *args, **kwargs)
self.cpu.PC = self.pc
class jitter_aarch64b(jitter_aarch64l):
def __init__(self, loc_db, *args, **kwargs):
Jitter.__init__(self, Lifter_Aarch64b(loc_db), *args, **kwargs)
self.vm.set_big_endian()
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