132 lines
4.3 KiB
Python
Executable File
132 lines
4.3 KiB
Python
Executable File
#!/usr/bin/python
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import argparse, re, subprocess, sys
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#-- This code fragment loads LLDB --
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def AddLLDBToSysPathOnMacOSX():
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def GetLLDBFrameworkPath():
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lldb_path = subprocess.check_output(["xcrun", "-find", "lldb"])
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re_result = re.match("(.*)/Developer/usr/bin/lldb", lldb_path)
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if re_result == None:
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return None
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xcode_contents_path = re_result.group(1)
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return xcode_contents_path + "/SharedFrameworks/LLDB.framework"
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lldb_framework_path = GetLLDBFrameworkPath()
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if lldb_framework_path == None:
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print "Couldn't find LLDB.framework"
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sys.exit(-1)
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sys.path.append(lldb_framework_path + "/Resources/Python")
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AddLLDBToSysPathOnMacOSX()
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import lldb
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#-- End of code fragment that loads LLDB --
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parser = argparse.ArgumentParser(description="Run an exhaustive test of the LLDB disassembler for a specific architecture.")
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parser.add_argument('--arch', required=True, action='store', help='The architecture whose disassembler is to be tested')
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parser.add_argument('--bytes', required=True, action='store', type=int, help='The byte width of instructions for that architecture')
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parser.add_argument('--random', required=False, action='store_true', help='Enables non-sequential testing')
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parser.add_argument('--start', required=False, action='store', type=int, help='The first instruction value to test')
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parser.add_argument('--skip', required=False, action='store', type=int, help='The interval between instructions to test')
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arguments = sys.argv[1:]
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arg_ns = parser.parse_args(arguments)
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debugger = lldb.SBDebugger.Create()
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if debugger.IsValid() == False:
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print "Couldn't create an SBDebugger"
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sys.exit(-1)
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target = debugger.CreateTargetWithFileAndArch(None, arg_ns.arch)
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if target.IsValid() == False:
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print "Couldn't create an SBTarget for architecture " + arg_ns.arch
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sys.exit(-1)
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class SequentialInstructionProvider:
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def __init__(self, byte_width, start=0, skip=1):
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self.m_byte_width = byte_width
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self.m_start = start
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self.m_skip = skip
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self.m_value = start
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self.m_last = (1 << (byte_width * 8)) - 1
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def GetNextInstruction(self):
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# Print current state
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print self.m_value
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# Done printing current state
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if self.m_value > self.m_last:
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return None
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ret = bytearray(self.m_byte_width)
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for i in range(self.m_byte_width):
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ret[self.m_byte_width - (i + 1)] = (self.m_value >> (i * 8)) & 255
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self.m_value += self.m_skip
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return ret
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def __iter__(self):
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return self
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def next(self):
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ret = self.GetNextInstruction()
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if ret == None:
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raise StopIteration
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return ret
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class RandomInstructionProvider:
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def __init__(self, byte_width):
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self.m_byte_width = byte_width
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self.m_random_file = open("/dev/random", 'r')
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def GetNextInstruction(self):
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ret = bytearray(self.m_byte_width)
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for i in range(self.m_byte_width):
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ret[i] = self.m_random_file.read(1)
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# Print current state
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for ret_byte in ret:
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print hex(ret_byte) + " ",
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print
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# Done printing current state
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return ret
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def __iter__(self):
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return self
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def next(self):
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ret = self.GetNextInstruction()
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if ret == None:
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raise StopIteration
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return ret
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def GetProviderWithArguments(args):
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instruction_provider = None
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if args.random == True:
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instruction_provider = RandomInstructionProvider(args.bytes)
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else:
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start = 0
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skip = 1
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if args.start != None:
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start = args.start
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if args.skip != None:
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skip = args.skip
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instruction_provider = SequentialInstructionProvider(args.bytes, start, skip)
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return instruction_provider
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instruction_provider = GetProviderWithArguments(arg_ns)
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fake_address = lldb.SBAddress()
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for inst_bytes in instruction_provider:
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inst_list = target.GetInstructions(fake_address, inst_bytes)
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if not inst_list.IsValid():
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print "Invalid instruction list"
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continue
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inst = inst_list.GetInstructionAtIndex(0)
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if not inst.IsValid():
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print "Invalid instruction"
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continue
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instr_output_stream = lldb.SBStream()
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inst.GetDescription(instr_output_stream)
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print instr_output_stream.GetData()
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