forked from OSchip/llvm-project
127 lines
4.7 KiB
Python
Executable File
127 lines
4.7 KiB
Python
Executable File
#!/usr/bin/python
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#----------------------------------------------------------------------
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# Be sure to add the python path that points to the LLDB shared library.
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# On MacOSX csh, tcsh:
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# setenv PYTHONPATH /Developer/Library/PrivateFrameworks/LLDB.framework/Resources/Python
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# On MacOSX sh, bash:
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# export PYTHONPATH=/Developer/Library/PrivateFrameworks/LLDB.framework/Resources/Python
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#----------------------------------------------------------------------
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import lldb
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import os
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import sys
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def disassemble_instructions(insts):
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for i in insts:
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print(i)
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def usage():
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print("Usage: disasm.py [-n name] executable-image")
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print(" By default, it breaks at and disassembles the 'main' function.")
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sys.exit(0)
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if len(sys.argv) == 2:
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fname = 'main'
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exe = sys.argv[1]
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elif len(sys.argv) == 4:
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if sys.argv[1] != '-n':
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usage()
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else:
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fname = sys.argv[2]
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exe = sys.argv[3]
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else:
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usage()
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# Create a new debugger instance
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debugger = lldb.SBDebugger.Create()
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# When we step or continue, don't return from the function until the process
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# stops. We do this by setting the async mode to false.
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debugger.SetAsync(False)
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# Create a target from a file and arch
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print("Creating a target for '%s'" % exe)
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target = debugger.CreateTargetWithFileAndArch(exe, lldb.LLDB_ARCH_DEFAULT)
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if target:
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# If the target is valid set a breakpoint at main
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main_bp = target.BreakpointCreateByName(
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fname, target.GetExecutable().GetFilename())
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print(main_bp)
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# Launch the process. Since we specified synchronous mode, we won't return
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# from this function until we hit the breakpoint at main
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process = target.LaunchSimple(None, None, os.getcwd())
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# Make sure the launch went ok
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if process:
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# Print some simple process info
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state = process.GetState()
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print(process)
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if state == lldb.eStateStopped:
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# Get the first thread
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thread = process.GetThreadAtIndex(0)
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if thread:
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# Print some simple thread info
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print(thread)
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# Get the first frame
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frame = thread.GetFrameAtIndex(0)
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if frame:
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# Print some simple frame info
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print(frame)
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function = frame.GetFunction()
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# See if we have debug info (a function)
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if function:
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# We do have a function, print some info for the
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# function
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print(function)
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# Now get all instructions for this function and print
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# them
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insts = function.GetInstructions(target)
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disassemble_instructions(insts)
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else:
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# See if we have a symbol in the symbol table for where
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# we stopped
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symbol = frame.GetSymbol()
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if symbol:
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# We do have a symbol, print some info for the
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# symbol
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print(symbol)
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# Now get all instructions for this symbol and
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# print them
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insts = symbol.GetInstructions(target)
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disassemble_instructions(insts)
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registerList = frame.GetRegisters()
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print("Frame registers (size of register set = %d):" % registerList.GetSize())
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for value in registerList:
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# print value
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print("%s (number of children = %d):" % (value.GetName(), value.GetNumChildren()))
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for child in value:
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print("Name: ", child.GetName(), " Value: ", child.GetValue())
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print("Hit the breakpoint at main, enter to continue and wait for program to exit or 'Ctrl-D'/'quit' to terminate the program")
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next = sys.stdin.readline()
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if not next or next.rstrip('\n') == 'quit':
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print("Terminating the inferior process...")
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process.Kill()
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else:
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# Now continue to the program exit
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process.Continue()
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# When we return from the above function we will hopefully be at the
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# program exit. Print out some process info
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print(process)
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elif state == lldb.eStateExited:
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print("Didn't hit the breakpoint at main, program has exited...")
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else:
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print("Unexpected process state: %s, killing process..." % debugger.StateAsCString(state))
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process.Kill()
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lldb.SBDebugger.Terminate()
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