1008 lines
36 KiB
Python
1008 lines
36 KiB
Python
"""
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This LLDB module contains miscellaneous utilities.
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Some of the test suite takes advantage of the utility functions defined here.
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They can also be useful for general purpose lldb scripting.
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"""
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from __future__ import print_function
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from __future__ import absolute_import
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# System modules
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import collections
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import os
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import re
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import sys
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# Third-party modules
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from six import StringIO as SixStringIO
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import six
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# LLDB modules
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import lldb
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# ===================================================
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# Utilities for locating/checking executable programs
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# ===================================================
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def is_exe(fpath):
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"""Returns True if fpath is an executable."""
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return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
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def which(program):
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"""Returns the full path to a program; None otherwise."""
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fpath, fname = os.path.split(program)
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if fpath:
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if is_exe(program):
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return program
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else:
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for path in os.environ["PATH"].split(os.pathsep):
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exe_file = os.path.join(path, program)
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if is_exe(exe_file):
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return exe_file
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return None
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# ===================================================
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# Disassembly for an SBFunction or an SBSymbol object
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# ===================================================
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def disassemble(target, function_or_symbol):
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"""Disassemble the function or symbol given a target.
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It returns the disassembly content in a string object.
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"""
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buf = SixStringIO()
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insts = function_or_symbol.GetInstructions(target)
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for i in insts:
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print(i, file=buf)
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return buf.getvalue()
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# ==========================================================
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# Integer (byte size 1, 2, 4, and 8) to bytearray conversion
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# ==========================================================
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def int_to_bytearray(val, bytesize):
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"""Utility function to convert an integer into a bytearray.
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It returns the bytearray in the little endian format. It is easy to get the
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big endian format, just do ba.reverse() on the returned object.
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"""
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import struct
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if bytesize == 1:
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return bytearray([val])
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# Little endian followed by a format character.
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template = "<%c"
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if bytesize == 2:
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fmt = template % 'h'
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elif bytesize == 4:
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fmt = template % 'i'
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elif bytesize == 4:
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fmt = template % 'q'
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else:
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return None
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packed = struct.pack(fmt, val)
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return bytearray(list(map(ord, packed)))
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def bytearray_to_int(bytes, bytesize):
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"""Utility function to convert a bytearray into an integer.
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It interprets the bytearray in the little endian format. For a big endian
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bytearray, just do ba.reverse() on the object before passing it in.
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"""
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import struct
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if bytesize == 1:
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return bytes[0]
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# Little endian followed by a format character.
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template = "<%c"
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if bytesize == 2:
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fmt = template % 'h'
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elif bytesize == 4:
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fmt = template % 'i'
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elif bytesize == 4:
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fmt = template % 'q'
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else:
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return None
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unpacked = struct.unpack(fmt, str(bytes))
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return unpacked[0]
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# ==============================================================
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# Get the description of an lldb object or None if not available
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# ==============================================================
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def get_description(obj, option=None):
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"""Calls lldb_obj.GetDescription() and returns a string, or None.
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For SBTarget, SBBreakpointLocation, and SBWatchpoint lldb objects, an extra
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option can be passed in to describe the detailed level of description
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desired:
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o lldb.eDescriptionLevelBrief
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o lldb.eDescriptionLevelFull
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o lldb.eDescriptionLevelVerbose
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"""
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method = getattr(obj, 'GetDescription')
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if not method:
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return None
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tuple = (lldb.SBTarget, lldb.SBBreakpointLocation, lldb.SBWatchpoint)
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if isinstance(obj, tuple):
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if option is None:
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option = lldb.eDescriptionLevelBrief
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stream = lldb.SBStream()
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if option is None:
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success = method(stream)
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else:
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success = method(stream, option)
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if not success:
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return None
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return stream.GetData()
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# =================================================
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# Convert some enum value to its string counterpart
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# =================================================
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def state_type_to_str(enum):
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"""Returns the stateType string given an enum."""
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if enum == lldb.eStateInvalid:
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return "invalid"
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elif enum == lldb.eStateUnloaded:
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return "unloaded"
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elif enum == lldb.eStateConnected:
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return "connected"
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elif enum == lldb.eStateAttaching:
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return "attaching"
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elif enum == lldb.eStateLaunching:
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return "launching"
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elif enum == lldb.eStateStopped:
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return "stopped"
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elif enum == lldb.eStateRunning:
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return "running"
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elif enum == lldb.eStateStepping:
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return "stepping"
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elif enum == lldb.eStateCrashed:
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return "crashed"
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elif enum == lldb.eStateDetached:
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return "detached"
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elif enum == lldb.eStateExited:
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return "exited"
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elif enum == lldb.eStateSuspended:
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return "suspended"
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else:
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raise Exception("Unknown StateType enum")
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def stop_reason_to_str(enum):
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"""Returns the stopReason string given an enum."""
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if enum == lldb.eStopReasonInvalid:
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return "invalid"
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elif enum == lldb.eStopReasonNone:
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return "none"
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elif enum == lldb.eStopReasonTrace:
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return "trace"
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elif enum == lldb.eStopReasonBreakpoint:
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return "breakpoint"
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elif enum == lldb.eStopReasonWatchpoint:
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return "watchpoint"
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elif enum == lldb.eStopReasonExec:
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return "exec"
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elif enum == lldb.eStopReasonSignal:
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return "signal"
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elif enum == lldb.eStopReasonException:
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return "exception"
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elif enum == lldb.eStopReasonPlanComplete:
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return "plancomplete"
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elif enum == lldb.eStopReasonThreadExiting:
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return "threadexiting"
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else:
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raise Exception("Unknown StopReason enum")
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def symbol_type_to_str(enum):
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"""Returns the symbolType string given an enum."""
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if enum == lldb.eSymbolTypeInvalid:
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return "invalid"
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elif enum == lldb.eSymbolTypeAbsolute:
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return "absolute"
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elif enum == lldb.eSymbolTypeCode:
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return "code"
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elif enum == lldb.eSymbolTypeData:
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return "data"
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elif enum == lldb.eSymbolTypeTrampoline:
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return "trampoline"
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elif enum == lldb.eSymbolTypeRuntime:
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return "runtime"
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elif enum == lldb.eSymbolTypeException:
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return "exception"
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elif enum == lldb.eSymbolTypeSourceFile:
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return "sourcefile"
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elif enum == lldb.eSymbolTypeHeaderFile:
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return "headerfile"
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elif enum == lldb.eSymbolTypeObjectFile:
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return "objectfile"
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elif enum == lldb.eSymbolTypeCommonBlock:
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return "commonblock"
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elif enum == lldb.eSymbolTypeBlock:
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return "block"
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elif enum == lldb.eSymbolTypeLocal:
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return "local"
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elif enum == lldb.eSymbolTypeParam:
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return "param"
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elif enum == lldb.eSymbolTypeVariable:
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return "variable"
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elif enum == lldb.eSymbolTypeVariableType:
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return "variabletype"
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elif enum == lldb.eSymbolTypeLineEntry:
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return "lineentry"
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elif enum == lldb.eSymbolTypeLineHeader:
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return "lineheader"
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elif enum == lldb.eSymbolTypeScopeBegin:
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return "scopebegin"
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elif enum == lldb.eSymbolTypeScopeEnd:
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return "scopeend"
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elif enum == lldb.eSymbolTypeAdditional:
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return "additional"
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elif enum == lldb.eSymbolTypeCompiler:
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return "compiler"
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elif enum == lldb.eSymbolTypeInstrumentation:
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return "instrumentation"
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elif enum == lldb.eSymbolTypeUndefined:
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return "undefined"
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def value_type_to_str(enum):
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"""Returns the valueType string given an enum."""
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if enum == lldb.eValueTypeInvalid:
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return "invalid"
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elif enum == lldb.eValueTypeVariableGlobal:
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return "global_variable"
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elif enum == lldb.eValueTypeVariableStatic:
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return "static_variable"
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elif enum == lldb.eValueTypeVariableArgument:
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return "argument_variable"
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elif enum == lldb.eValueTypeVariableLocal:
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return "local_variable"
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elif enum == lldb.eValueTypeRegister:
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return "register"
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elif enum == lldb.eValueTypeRegisterSet:
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return "register_set"
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elif enum == lldb.eValueTypeConstResult:
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return "constant_result"
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else:
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raise Exception("Unknown ValueType enum")
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# ==================================================
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# Get stopped threads due to each stop reason.
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# ==================================================
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def sort_stopped_threads(process,
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breakpoint_threads = None,
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crashed_threads = None,
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watchpoint_threads = None,
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signal_threads = None,
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exiting_threads = None,
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other_threads = None):
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""" Fills array *_threads with threads stopped for the corresponding stop
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reason.
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"""
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for lst in [breakpoint_threads,
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watchpoint_threads,
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signal_threads,
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exiting_threads,
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other_threads]:
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if lst is not None:
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lst[:] = []
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for thread in process:
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dispatched = False
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for (reason, list) in [(lldb.eStopReasonBreakpoint, breakpoint_threads),
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(lldb.eStopReasonException, crashed_threads),
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(lldb.eStopReasonWatchpoint, watchpoint_threads),
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(lldb.eStopReasonSignal, signal_threads),
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(lldb.eStopReasonThreadExiting, exiting_threads),
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(None, other_threads)]:
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if not dispatched and list is not None:
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if thread.GetStopReason() == reason or reason is None:
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list.append(thread)
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dispatched = True
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# ==================================================
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# Utility functions for setting breakpoints
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# ==================================================
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def run_break_set_by_file_and_line (test, file_name, line_number, extra_options = None, num_expected_locations = 1, loc_exact=False, module_name=None):
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"""Set a breakpoint by file and line, returning the breakpoint number.
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If extra_options is not None, then we append it to the breakpoint set command.
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If num_expected_locations is -1 we check that we got AT LEAST one location, otherwise we check that num_expected_locations equals the number of locations.
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If loc_exact is true, we check that there is one location, and that location must be at the input file and line number."""
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if file_name == None:
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command = 'breakpoint set -l %d'%(line_number)
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else:
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command = 'breakpoint set -f "%s" -l %d'%(file_name, line_number)
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if module_name:
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command += " --shlib '%s'" % (module_name)
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if extra_options:
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command += " " + extra_options
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break_results = run_break_set_command (test, command)
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if num_expected_locations == 1 and loc_exact:
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check_breakpoint_result (test, break_results, num_locations=num_expected_locations, file_name = file_name, line_number = line_number, module_name=module_name)
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else:
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check_breakpoint_result (test, break_results, num_locations = num_expected_locations)
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return get_bpno_from_match (break_results)
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def run_break_set_by_symbol (test, symbol, extra_options = None, num_expected_locations = -1, sym_exact = False, module_name=None):
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"""Set a breakpoint by symbol name. Common options are the same as run_break_set_by_file_and_line.
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If sym_exact is true, then the output symbol must match the input exactly, otherwise we do a substring match."""
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command = 'breakpoint set -n "%s"'%(symbol)
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if module_name:
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command += " --shlib '%s'" % (module_name)
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if extra_options:
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command += " " + extra_options
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break_results = run_break_set_command (test, command)
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if num_expected_locations == 1 and sym_exact:
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check_breakpoint_result (test, break_results, num_locations = num_expected_locations, symbol_name = symbol, module_name=module_name)
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else:
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check_breakpoint_result (test, break_results, num_locations = num_expected_locations)
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return get_bpno_from_match (break_results)
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def run_break_set_by_selector (test, selector, extra_options = None, num_expected_locations = -1, module_name=None):
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"""Set a breakpoint by selector. Common options are the same as run_break_set_by_file_and_line."""
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command = 'breakpoint set -S "%s"' % (selector)
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if module_name:
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command += ' --shlib "%s"' % (module_name)
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if extra_options:
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command += " " + extra_options
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break_results = run_break_set_command (test, command)
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if num_expected_locations == 1:
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check_breakpoint_result (test, break_results, num_locations = num_expected_locations, symbol_name = selector, symbol_match_exact=False, module_name=module_name)
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else:
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check_breakpoint_result (test, break_results, num_locations = num_expected_locations)
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return get_bpno_from_match (break_results)
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def run_break_set_by_regexp (test, regexp, extra_options=None, num_expected_locations=-1):
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"""Set a breakpoint by regular expression match on symbol name. Common options are the same as run_break_set_by_file_and_line."""
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command = 'breakpoint set -r "%s"'%(regexp)
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if extra_options:
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command += " " + extra_options
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break_results = run_break_set_command (test, command)
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check_breakpoint_result (test, break_results, num_locations=num_expected_locations)
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return get_bpno_from_match (break_results)
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def run_break_set_by_source_regexp (test, regexp, extra_options=None, num_expected_locations=-1):
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"""Set a breakpoint by source regular expression. Common options are the same as run_break_set_by_file_and_line."""
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command = 'breakpoint set -p "%s"'%(regexp)
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if extra_options:
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command += " " + extra_options
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break_results = run_break_set_command (test, command)
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check_breakpoint_result (test, break_results, num_locations=num_expected_locations)
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return get_bpno_from_match (break_results)
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def run_break_set_command (test, command):
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"""Run the command passed in - it must be some break set variant - and analyze the result.
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Returns a dictionary of information gleaned from the command-line results.
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Will assert if the breakpoint setting fails altogether.
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Dictionary will contain:
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bpno - breakpoint of the newly created breakpoint, -1 on error.
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num_locations - number of locations set for the breakpoint.
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If there is only one location, the dictionary MAY contain:
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file - source file name
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line_no - source line number
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symbol - symbol name
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inline_symbol - inlined symbol name
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offset - offset from the original symbol
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module - module
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address - address at which the breakpoint was set."""
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patterns = [r"^Breakpoint (?P<bpno>[0-9]+): (?P<num_locations>[0-9]+) locations\.$",
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r"^Breakpoint (?P<bpno>[0-9]+): (?P<num_locations>no) locations \(pending\)\.",
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r"^Breakpoint (?P<bpno>[0-9]+): where = (?P<module>.*)`(?P<symbol>[+\-]{0,1}[^+]+)( \+ (?P<offset>[0-9]+)){0,1}( \[inlined\] (?P<inline_symbol>.*)){0,1} at (?P<file>[^:]+):(?P<line_no>[0-9]+), address = (?P<address>0x[0-9a-fA-F]+)$",
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r"^Breakpoint (?P<bpno>[0-9]+): where = (?P<module>.*)`(?P<symbol>.*)( \+ (?P<offset>[0-9]+)){0,1}, address = (?P<address>0x[0-9a-fA-F]+)$"]
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match_object = test.match (command, patterns)
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break_results = match_object.groupdict()
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# We always insert the breakpoint number, setting it to -1 if we couldn't find it
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# Also, make sure it gets stored as an integer.
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if not 'bpno' in break_results:
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break_results['bpno'] = -1
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else:
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break_results['bpno'] = int(break_results['bpno'])
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# We always insert the number of locations
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# If ONE location is set for the breakpoint, then the output doesn't mention locations, but it has to be 1...
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# We also make sure it is an integer.
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if not 'num_locations' in break_results:
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num_locations = 1
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else:
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num_locations = break_results['num_locations']
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if num_locations == 'no':
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num_locations = 0
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else:
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num_locations = int(break_results['num_locations'])
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break_results['num_locations'] = num_locations
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if 'line_no' in break_results:
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break_results['line_no'] = int(break_results['line_no'])
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return break_results
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def get_bpno_from_match (break_results):
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return int (break_results['bpno'])
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def check_breakpoint_result (test, break_results, file_name=None, line_number=-1, symbol_name=None, symbol_match_exact=True, module_name=None, offset=-1, num_locations=-1):
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out_num_locations = break_results['num_locations']
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if num_locations == -1:
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test.assertTrue (out_num_locations > 0, "Expecting one or more locations, got none.")
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else:
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test.assertTrue (num_locations == out_num_locations, "Expecting %d locations, got %d."%(num_locations, out_num_locations))
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if file_name:
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out_file_name = ""
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if 'file' in break_results:
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out_file_name = break_results['file']
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test.assertTrue (file_name == out_file_name, "Breakpoint file name '%s' doesn't match resultant name '%s'."%(file_name, out_file_name))
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if line_number != -1:
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out_line_number = -1
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if 'line_no' in break_results:
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out_line_number = break_results['line_no']
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test.assertTrue (line_number == out_line_number, "Breakpoint line number %s doesn't match resultant line %s."%(line_number, out_line_number))
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if symbol_name:
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out_symbol_name = ""
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# Look first for the inlined symbol name, otherwise use the symbol name:
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if 'inline_symbol' in break_results and break_results['inline_symbol']:
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out_symbol_name = break_results['inline_symbol']
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|
elif 'symbol' in break_results:
|
|
out_symbol_name = break_results['symbol']
|
|
|
|
if symbol_match_exact:
|
|
test.assertTrue(symbol_name == out_symbol_name, "Symbol name '%s' doesn't match resultant symbol '%s'."%(symbol_name, out_symbol_name))
|
|
else:
|
|
test.assertTrue(out_symbol_name.find(symbol_name) != -1, "Symbol name '%s' isn't in resultant symbol '%s'."%(symbol_name, out_symbol_name))
|
|
|
|
if module_name:
|
|
out_module_name = None
|
|
if 'module' in break_results:
|
|
out_module_name = break_results['module']
|
|
|
|
test.assertTrue (module_name.find(out_module_name) != -1, "Symbol module name '%s' isn't in expected module name '%s'."%(out_module_name, module_name))
|
|
|
|
# ==================================================
|
|
# Utility functions related to Threads and Processes
|
|
# ==================================================
|
|
|
|
def get_stopped_threads(process, reason):
|
|
"""Returns the thread(s) with the specified stop reason in a list.
|
|
|
|
The list can be empty if no such thread exists.
|
|
"""
|
|
threads = []
|
|
for t in process:
|
|
if t.GetStopReason() == reason:
|
|
threads.append(t)
|
|
return threads
|
|
|
|
def get_stopped_thread(process, reason):
|
|
"""A convenience function which returns the first thread with the given stop
|
|
reason or None.
|
|
|
|
Example usages:
|
|
|
|
1. Get the stopped thread due to a breakpoint condition
|
|
|
|
...
|
|
from lldbutil import get_stopped_thread
|
|
thread = get_stopped_thread(process, lldb.eStopReasonPlanComplete)
|
|
self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
|
|
...
|
|
|
|
2. Get the thread stopped due to a breakpoint
|
|
|
|
...
|
|
from lldbutil import get_stopped_thread
|
|
thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint)
|
|
self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint")
|
|
...
|
|
|
|
"""
|
|
threads = get_stopped_threads(process, reason)
|
|
if len(threads) == 0:
|
|
return None
|
|
return threads[0]
|
|
|
|
def get_threads_stopped_at_breakpoint (process, bkpt):
|
|
""" For a stopped process returns the thread stopped at the breakpoint passed in bkpt"""
|
|
stopped_threads = []
|
|
threads = []
|
|
|
|
stopped_threads = get_stopped_threads (process, lldb.eStopReasonBreakpoint)
|
|
|
|
if len(stopped_threads) == 0:
|
|
return threads
|
|
|
|
for thread in stopped_threads:
|
|
# Make sure we've hit our breakpoint...
|
|
break_id = thread.GetStopReasonDataAtIndex (0)
|
|
if break_id == bkpt.GetID():
|
|
threads.append(thread)
|
|
|
|
return threads
|
|
|
|
def is_thread_crashed (test, thread):
|
|
"""In the test suite we dereference a null pointer to simulate a crash. The way this is
|
|
reported depends on the platform."""
|
|
if test.platformIsDarwin():
|
|
return thread.GetStopReason() == lldb.eStopReasonException and "EXC_BAD_ACCESS" in thread.GetStopDescription(100)
|
|
elif test.getPlatform() == "linux":
|
|
return thread.GetStopReason() == lldb.eStopReasonSignal and thread.GetStopReasonDataAtIndex(0) == thread.GetProcess().GetUnixSignals().GetSignalNumberFromName("SIGSEGV")
|
|
else:
|
|
return "invalid address" in thread.GetStopDescription(100)
|
|
|
|
def get_crashed_threads (test, process):
|
|
threads = []
|
|
if process.GetState() != lldb.eStateStopped:
|
|
return threads
|
|
for thread in process:
|
|
if is_thread_crashed(test, thread):
|
|
threads.append(thread)
|
|
return threads
|
|
|
|
def continue_to_breakpoint (process, bkpt):
|
|
""" Continues the process, if it stops, returns the threads stopped at bkpt; otherwise, returns None"""
|
|
process.Continue()
|
|
if process.GetState() != lldb.eStateStopped:
|
|
return None
|
|
else:
|
|
return get_threads_stopped_at_breakpoint (process, bkpt)
|
|
|
|
def get_caller_symbol(thread):
|
|
"""
|
|
Returns the symbol name for the call site of the leaf function.
|
|
"""
|
|
depth = thread.GetNumFrames()
|
|
if depth <= 1:
|
|
return None
|
|
caller = thread.GetFrameAtIndex(1).GetSymbol()
|
|
if caller:
|
|
return caller.GetName()
|
|
else:
|
|
return None
|
|
|
|
|
|
def get_function_names(thread):
|
|
"""
|
|
Returns a sequence of function names from the stack frames of this thread.
|
|
"""
|
|
def GetFuncName(i):
|
|
return thread.GetFrameAtIndex(i).GetFunctionName()
|
|
|
|
return list(map(GetFuncName, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def get_symbol_names(thread):
|
|
"""
|
|
Returns a sequence of symbols for this thread.
|
|
"""
|
|
def GetSymbol(i):
|
|
return thread.GetFrameAtIndex(i).GetSymbol().GetName()
|
|
|
|
return list(map(GetSymbol, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def get_pc_addresses(thread):
|
|
"""
|
|
Returns a sequence of pc addresses for this thread.
|
|
"""
|
|
def GetPCAddress(i):
|
|
return thread.GetFrameAtIndex(i).GetPCAddress()
|
|
|
|
return list(map(GetPCAddress, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def get_filenames(thread):
|
|
"""
|
|
Returns a sequence of file names from the stack frames of this thread.
|
|
"""
|
|
def GetFilename(i):
|
|
return thread.GetFrameAtIndex(i).GetLineEntry().GetFileSpec().GetFilename()
|
|
|
|
return list(map(GetFilename, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def get_line_numbers(thread):
|
|
"""
|
|
Returns a sequence of line numbers from the stack frames of this thread.
|
|
"""
|
|
def GetLineNumber(i):
|
|
return thread.GetFrameAtIndex(i).GetLineEntry().GetLine()
|
|
|
|
return list(map(GetLineNumber, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def get_module_names(thread):
|
|
"""
|
|
Returns a sequence of module names from the stack frames of this thread.
|
|
"""
|
|
def GetModuleName(i):
|
|
return thread.GetFrameAtIndex(i).GetModule().GetFileSpec().GetFilename()
|
|
|
|
return list(map(GetModuleName, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def get_stack_frames(thread):
|
|
"""
|
|
Returns a sequence of stack frames for this thread.
|
|
"""
|
|
def GetStackFrame(i):
|
|
return thread.GetFrameAtIndex(i)
|
|
|
|
return list(map(GetStackFrame, list(range(thread.GetNumFrames()))))
|
|
|
|
|
|
def print_stacktrace(thread, string_buffer = False):
|
|
"""Prints a simple stack trace of this thread."""
|
|
|
|
output = SixStringIO() if string_buffer else sys.stdout
|
|
target = thread.GetProcess().GetTarget()
|
|
|
|
depth = thread.GetNumFrames()
|
|
|
|
mods = get_module_names(thread)
|
|
funcs = get_function_names(thread)
|
|
symbols = get_symbol_names(thread)
|
|
files = get_filenames(thread)
|
|
lines = get_line_numbers(thread)
|
|
addrs = get_pc_addresses(thread)
|
|
|
|
if thread.GetStopReason() != lldb.eStopReasonInvalid:
|
|
desc = "stop reason=" + stop_reason_to_str(thread.GetStopReason())
|
|
else:
|
|
desc = ""
|
|
print("Stack trace for thread id={0:#x} name={1} queue={2} ".format(
|
|
thread.GetThreadID(), thread.GetName(), thread.GetQueueName()) + desc, file=output)
|
|
|
|
for i in range(depth):
|
|
frame = thread.GetFrameAtIndex(i)
|
|
function = frame.GetFunction()
|
|
|
|
load_addr = addrs[i].GetLoadAddress(target)
|
|
if not function:
|
|
file_addr = addrs[i].GetFileAddress()
|
|
start_addr = frame.GetSymbol().GetStartAddress().GetFileAddress()
|
|
symbol_offset = file_addr - start_addr
|
|
print(" frame #{num}: {addr:#016x} {mod}`{symbol} + {offset}".format(
|
|
num=i, addr=load_addr, mod=mods[i], symbol=symbols[i], offset=symbol_offset), file=output)
|
|
else:
|
|
print(" frame #{num}: {addr:#016x} {mod}`{func} at {file}:{line} {args}".format(
|
|
num=i, addr=load_addr, mod=mods[i],
|
|
func='%s [inlined]' % funcs[i] if frame.IsInlined() else funcs[i],
|
|
file=files[i], line=lines[i],
|
|
args=get_args_as_string(frame, showFuncName=False) if not frame.IsInlined() else '()'), file=output)
|
|
|
|
if string_buffer:
|
|
return output.getvalue()
|
|
|
|
|
|
def print_stacktraces(process, string_buffer = False):
|
|
"""Prints the stack traces of all the threads."""
|
|
|
|
output = SixStringIO() if string_buffer else sys.stdout
|
|
|
|
print("Stack traces for " + str(process), file=output)
|
|
|
|
for thread in process:
|
|
print(print_stacktrace(thread, string_buffer=True), file=output)
|
|
|
|
if string_buffer:
|
|
return output.getvalue()
|
|
|
|
def expect_state_changes(test, listener, states, timeout = 5):
|
|
"""Listens for state changed events on the listener and makes sure they match what we
|
|
expect. Stop-and-restart events (where GetRestartedFromEvent() returns true) are ignored."""
|
|
event = lldb.SBEvent()
|
|
for expected_state in states:
|
|
if not listener.WaitForEvent(timeout, event):
|
|
test.Fail("Timed out while waiting for a transition to state %s" %
|
|
lldb.SBDebugger.StateAsCString(expected_state))
|
|
|
|
got_state = lldb.SBProcess.GetStateFromEvent(event)
|
|
if got_state == lldb.eStateStopped and lldb.SBProcess.GetRestartedFromEvent(event):
|
|
continue
|
|
|
|
test.assertEqual(expected_state, got_state)
|
|
|
|
# ===================================
|
|
# Utility functions related to Frames
|
|
# ===================================
|
|
|
|
def get_parent_frame(frame):
|
|
"""
|
|
Returns the parent frame of the input frame object; None if not available.
|
|
"""
|
|
thread = frame.GetThread()
|
|
parent_found = False
|
|
for f in thread:
|
|
if parent_found:
|
|
return f
|
|
if f.GetFrameID() == frame.GetFrameID():
|
|
parent_found = True
|
|
|
|
# If we reach here, no parent has been found, return None.
|
|
return None
|
|
|
|
def get_args_as_string(frame, showFuncName=True):
|
|
"""
|
|
Returns the args of the input frame object as a string.
|
|
"""
|
|
# arguments => True
|
|
# locals => False
|
|
# statics => False
|
|
# in_scope_only => True
|
|
vars = frame.GetVariables(True, False, False, True) # type of SBValueList
|
|
args = [] # list of strings
|
|
for var in vars:
|
|
args.append("(%s)%s=%s" % (var.GetTypeName(),
|
|
var.GetName(),
|
|
var.GetValue()))
|
|
if frame.GetFunction():
|
|
name = frame.GetFunction().GetName()
|
|
elif frame.GetSymbol():
|
|
name = frame.GetSymbol().GetName()
|
|
else:
|
|
name = ""
|
|
if showFuncName:
|
|
return "%s(%s)" % (name, ", ".join(args))
|
|
else:
|
|
return "(%s)" % (", ".join(args))
|
|
|
|
def print_registers(frame, string_buffer = False):
|
|
"""Prints all the register sets of the frame."""
|
|
|
|
output = SixStringIO() if string_buffer else sys.stdout
|
|
|
|
print("Register sets for " + str(frame), file=output)
|
|
|
|
registerSet = frame.GetRegisters() # Return type of SBValueList.
|
|
print("Frame registers (size of register set = %d):" % registerSet.GetSize(), file=output)
|
|
for value in registerSet:
|
|
#print(value, file=output)
|
|
print("%s (number of children = %d):" % (value.GetName(), value.GetNumChildren()), file=output)
|
|
for child in value:
|
|
print("Name: %s, Value: %s" % (child.GetName(), child.GetValue()), file=output)
|
|
|
|
if string_buffer:
|
|
return output.getvalue()
|
|
|
|
def get_registers(frame, kind):
|
|
"""Returns the registers given the frame and the kind of registers desired.
|
|
|
|
Returns None if there's no such kind.
|
|
"""
|
|
registerSet = frame.GetRegisters() # Return type of SBValueList.
|
|
for value in registerSet:
|
|
if kind.lower() in value.GetName().lower():
|
|
return value
|
|
|
|
return None
|
|
|
|
def get_GPRs(frame):
|
|
"""Returns the general purpose registers of the frame as an SBValue.
|
|
|
|
The returned SBValue object is iterable. An example:
|
|
...
|
|
from lldbutil import get_GPRs
|
|
regs = get_GPRs(frame)
|
|
for reg in regs:
|
|
print("%s => %s" % (reg.GetName(), reg.GetValue()))
|
|
...
|
|
"""
|
|
return get_registers(frame, "general purpose")
|
|
|
|
def get_FPRs(frame):
|
|
"""Returns the floating point registers of the frame as an SBValue.
|
|
|
|
The returned SBValue object is iterable. An example:
|
|
...
|
|
from lldbutil import get_FPRs
|
|
regs = get_FPRs(frame)
|
|
for reg in regs:
|
|
print("%s => %s" % (reg.GetName(), reg.GetValue()))
|
|
...
|
|
"""
|
|
return get_registers(frame, "floating point")
|
|
|
|
def get_ESRs(frame):
|
|
"""Returns the exception state registers of the frame as an SBValue.
|
|
|
|
The returned SBValue object is iterable. An example:
|
|
...
|
|
from lldbutil import get_ESRs
|
|
regs = get_ESRs(frame)
|
|
for reg in regs:
|
|
print("%s => %s" % (reg.GetName(), reg.GetValue()))
|
|
...
|
|
"""
|
|
return get_registers(frame, "exception state")
|
|
|
|
# ======================================
|
|
# Utility classes/functions for SBValues
|
|
# ======================================
|
|
|
|
class BasicFormatter(object):
|
|
"""The basic formatter inspects the value object and prints the value."""
|
|
def format(self, value, buffer=None, indent=0):
|
|
if not buffer:
|
|
output = SixStringIO()
|
|
else:
|
|
output = buffer
|
|
# If there is a summary, it suffices.
|
|
val = value.GetSummary()
|
|
# Otherwise, get the value.
|
|
if val == None:
|
|
val = value.GetValue()
|
|
if val == None and value.GetNumChildren() > 0:
|
|
val = "%s (location)" % value.GetLocation()
|
|
print("{indentation}({type}) {name} = {value}".format(
|
|
indentation = ' ' * indent,
|
|
type = value.GetTypeName(),
|
|
name = value.GetName(),
|
|
value = val), file=output)
|
|
return output.getvalue()
|
|
|
|
class ChildVisitingFormatter(BasicFormatter):
|
|
"""The child visiting formatter prints the value and its immediate children.
|
|
|
|
The constructor takes a keyword arg: indent_child, which defaults to 2.
|
|
"""
|
|
def __init__(self, indent_child=2):
|
|
"""Default indentation of 2 SPC's for the children."""
|
|
self.cindent = indent_child
|
|
def format(self, value, buffer=None):
|
|
if not buffer:
|
|
output = SixStringIO()
|
|
else:
|
|
output = buffer
|
|
|
|
BasicFormatter.format(self, value, buffer=output)
|
|
for child in value:
|
|
BasicFormatter.format(self, child, buffer=output, indent=self.cindent)
|
|
|
|
return output.getvalue()
|
|
|
|
class RecursiveDecentFormatter(BasicFormatter):
|
|
"""The recursive decent formatter prints the value and the decendents.
|
|
|
|
The constructor takes two keyword args: indent_level, which defaults to 0,
|
|
and indent_child, which defaults to 2. The current indentation level is
|
|
determined by indent_level, while the immediate children has an additional
|
|
indentation by inden_child.
|
|
"""
|
|
def __init__(self, indent_level=0, indent_child=2):
|
|
self.lindent = indent_level
|
|
self.cindent = indent_child
|
|
def format(self, value, buffer=None):
|
|
if not buffer:
|
|
output = SixStringIO()
|
|
else:
|
|
output = buffer
|
|
|
|
BasicFormatter.format(self, value, buffer=output, indent=self.lindent)
|
|
new_indent = self.lindent + self.cindent
|
|
for child in value:
|
|
if child.GetSummary() != None:
|
|
BasicFormatter.format(self, child, buffer=output, indent=new_indent)
|
|
else:
|
|
if child.GetNumChildren() > 0:
|
|
rdf = RecursiveDecentFormatter(indent_level=new_indent)
|
|
rdf.format(child, buffer=output)
|
|
else:
|
|
BasicFormatter.format(self, child, buffer=output, indent=new_indent)
|
|
|
|
return output.getvalue()
|
|
|
|
# ===========================================================
|
|
# Utility functions for path manipulation on remote platforms
|
|
# ===========================================================
|
|
|
|
def join_remote_paths(*paths):
|
|
# TODO: update with actual platform name for remote windows once it exists
|
|
if lldb.remote_platform.GetName() == 'remote-windows':
|
|
return os.path.join(*paths).replace(os.path.sep, '\\')
|
|
return os.path.join(*paths).replace(os.path.sep, '/')
|
|
|
|
def append_to_process_working_directory(*paths):
|
|
remote = lldb.remote_platform
|
|
if remote:
|
|
return join_remote_paths(remote.GetWorkingDirectory(), *paths)
|
|
return os.path.join(os.getcwd(), *paths)
|
|
|
|
# ==================================================
|
|
# Utility functions to get the correct signal number
|
|
# ==================================================
|
|
|
|
import signal
|
|
|
|
def get_signal_number(signal_name):
|
|
platform = lldb.remote_platform
|
|
if platform and platform.IsValid():
|
|
signals = platform.GetUnixSignals()
|
|
if signals.IsValid():
|
|
signal_number = signals.GetSignalNumberFromName(signal_name)
|
|
if signal_number > 0:
|
|
return signal_number
|
|
# No remote platform; fall back to using local python signals.
|
|
return getattr(signal, signal_name)
|
|
|
|
class PrintableRegex(object):
|
|
def __init__(self, text):
|
|
self.regex = re.compile(text)
|
|
self.text = text
|
|
|
|
def match(self, str):
|
|
return self.regex.match(str)
|
|
|
|
def __str__(self):
|
|
return "%s" % (self.text)
|
|
|
|
def __repr__(self):
|
|
return "re.compile(%s) -> %s" % (self.text, self.regex)
|
|
|
|
def skip_if_callable(test, callable, reason):
|
|
if six.callable(test):
|
|
test.skipTest(reason)
|
|
return True
|
|
return False
|
|
|
|
def skip_if_library_missing(test, target, library):
|
|
def find_library(target, library):
|
|
for module in target.modules:
|
|
filename = module.file.GetFilename()
|
|
if isinstance(library, str):
|
|
if library == filename:
|
|
return False
|
|
elif hasattr(library, 'match'):
|
|
if library.match(filename):
|
|
return False
|
|
return True
|
|
def find_library_callable(test):
|
|
return find_library(target, library)
|
|
return skip_if_callable(test, find_library_callable, "could not find library matching '%s' in target %s" % (library, target))
|