Class SBDebugger

source code

SBDebugger is the primordial object that creates SBTargets and provides
access to them.  It also manages the overall debugging experiences.

For example (from example/disasm.py),

import lldb
import os
import sys

def disassemble_instructions (insts):
    for i in insts:
        print i

...

# Create a new debugger instance
debugger = lldb.SBDebugger.Create()

# When we step or continue, don't return from the function until the process 
# stops. We do this by setting the async mode to false.
debugger.SetAsync (False)

# Create a target from a file and arch
print 'Creating a target for '%s'' % exe

target = debugger.CreateTargetWithFileAndArch (exe, lldb.LLDB_ARCH_DEFAULT)

if target:
    # If the target is valid set a breakpoint at main
    main_bp = target.BreakpointCreateByName (fname, target.GetExecutable().GetFilename());

    print main_bp

    # Launch the process. Since we specified synchronous mode, we won't return
    # from this function until we hit the breakpoint at main
    process = target.LaunchSimple (None, None, os.getcwd())
    
    # Make sure the launch went ok
    if process:
        # Print some simple process info
        state = process.GetState ()
        print process
        if state == lldb.eStateStopped:
            # Get the first thread
            thread = process.GetThreadAtIndex (0)
            if thread:
                # Print some simple thread info
                print thread
                # Get the first frame
                frame = thread.GetFrameAtIndex (0)
                if frame:
                    # Print some simple frame info
                    print frame
                    function = frame.GetFunction()
                    # See if we have debug info (a function)
                    if function:
                        # We do have a function, print some info for the function
                        print function
                        # Now get all instructions for this function and print them
                        insts = function.GetInstructions(target)
                        disassemble_instructions (insts)
                    else:
                        # See if we have a symbol in the symbol table for where we stopped
                        symbol = frame.GetSymbol();
                        if symbol:
                            # We do have a symbol, print some info for the symbol
                            print symbol
                            # Now get all instructions for this symbol and print them
                            insts = symbol.GetInstructions(target)
                            disassemble_instructions (insts)

                    registerList = frame.GetRegisters()
                    print 'Frame registers (size of register set = %d):' % registerList.GetSize()
                    for value in registerList:
                        #print value
                        print '%s (number of children = %d):' % (value.GetName(), value.GetNumChildren())
                        for child in value:
                            print 'Name: ', child.GetName(), ' Value: ', child.GetValue()

            print 'Hit the breakpoint at main, enter to continue and wait for program to exit or 'Ctrl-D'/'quit' to terminate the program'
            next = sys.stdin.readline()
            if not next or next.rstrip('
') == 'quit':
                print 'Terminating the inferior process...'
                process.Kill()
            else:
                # Now continue to the program exit
                process.Continue()
                # When we return from the above function we will hopefully be at the
                # program exit. Print out some process info
                print process
        elif state == lldb.eStateExited:
            print 'Didn't hit the breakpoint at main, program has exited...'
        else:
            print 'Unexpected process state: %s, killing process...' % debugger.StateAsCString (state)
            process.Kill()

CreateTarget(SBDebugger self, str const * filename, str const * target_triple, str const * platform_name, bool add_dependent_modules, 
    SBError sb_error) -> SBTarget
CreateTarget(SBDebugger self, str const * filename) -> SBTarget