miasm/jitter/jitcore_cc_base.py
#-*- coding:utf-8 -*-
import glob
import os
import tempfile
import platform
import sysconfig
from distutils.sysconfig import get_python_inc
from miasm.jitter.jitcore import JitCore
from miasm.core.utils import keydefaultdict
is_win = platform.system() == "Windows"
def gen_core(arch, attrib):
lib_dir = os.path.dirname(os.path.realpath(__file__))
txt = ""
txt += '#include "%s/queue.h"\n' % lib_dir
txt += '#include "%s/op_semantics.h"\n' % lib_dir
txt += '#include "%s/vm_mngr.h"\n' % lib_dir
txt += '#include "%s/bn.h"\n' % lib_dir
txt += '#include "%s/vm_mngr_py.h"\n' % lib_dir
txt += '#include "%s/JitCore.h"\n' % lib_dir
txt += '#include "%s/arch/JitCore_%s.h"\n' % (lib_dir, arch.name)
txt += r'''
#define RAISE(errtype, msg) {PyObject* p; p = PyErr_Format( errtype, msg ); return p;}
'''
return txt
class myresolver(object):
def __init__(self, offset):
self.offset = offset
def ret(self):
return "return PyLong_FromUnsignedLongLong(0x%X);" % self.offset
class resolver(object):
def __init__(self):
self.resolvers = keydefaultdict(myresolver)
def get_resolver(self, offset):
return self.resolvers[offset]
class JitCore_Cc_Base(JitCore):
"JiT management, abstract class using a C compiler as backend"
def __init__(self, lifter, bin_stream):
self.jitted_block_delete_cb = self.deleteCB
super(JitCore_Cc_Base, self).__init__(lifter, bin_stream)
self.resolver = resolver()
self.lifter = lifter
self.states = {}
self.tempdir = os.path.join(tempfile.gettempdir(), "miasm_cache")
try:
os.mkdir(self.tempdir, 0o755)
except OSError:
pass
if not os.access(self.tempdir, os.R_OK | os.W_OK):
raise RuntimeError(
'Cannot access cache directory %s ' % self.tempdir)
self.exec_wrapper = None
self.libs = None
self.include_files = None
def deleteCB(self, offset):
raise NotImplementedError()
def load(self):
lib_dir = os.path.dirname(os.path.realpath(__file__))
ext = sysconfig.get_config_var('EXT_SUFFIX')
if ext is None:
ext = ".so" if not is_win else ".lib"
if is_win:
# sysconfig.get_config_var('EXT_SUFFIX') is .pyd on Windows and need to be forced to .lib
# Additionally windows built libraries may have a name like VmMngr.cp38-win_amd64.lib
ext_files = glob.glob(os.path.join(lib_dir, "VmMngr.*lib"))
if len(ext_files) == 1:
ext = os.path.basename(ext_files[0]).replace("VmMngr", "")
libs = [
os.path.join(lib_dir, "VmMngr" + ext),
os.path.join(
lib_dir,
"arch",
"JitCore_%s%s" % (self.lifter.arch.name, ext)
)
]
include_files = [
os.path.dirname(__file__),
get_python_inc()
]
self.include_files = include_files
self.libs = libs
def init_codegen(self, codegen):
"""
Get the code generator @codegen
@codegen: an CGen instance
"""
self.codegen = codegen
def gen_c_code(self, block):
"""
Return the C code corresponding to the @irblocks
@irblocks: list of irblocks
"""
f_declaration = '_MIASM_EXPORT int %s(block_id * BlockDst, JitCpu* jitcpu)' % self.FUNCNAME
out = self.codegen.gen_c(
block,
log_mn=self.log_mn,
log_regs=self.log_regs
)
out = [f_declaration + '{'] + out + ['}\n']
c_code = out
return self.gen_C_source(self.lifter, c_code)
@staticmethod
def gen_C_source(lifter, func_code):
raise NotImplementedError()