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+"""
+This LLDB module contains miscellaneous utilities.
+Some of the test suite takes advantage of the utility functions defined here.
+They can also be useful for general purpose lldb scripting.
+"""
+
+from __future__ import print_function
+from __future__ import absolute_import
+
+# System modules
+import collections
+import os
+import re
+import sys
+
+# Third-party modules
+from six import StringIO as SixStringIO
+import six
+
+# LLDB modules
+import lldb
+
+
+# ===================================================
+# Utilities for locating/checking executable programs
+# ===================================================
+
+def is_exe(fpath):
+ """Returns True if fpath is an executable."""
+ return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+def which(program):
+ """Returns the full path to a program; None otherwise."""
+ fpath, fname = os.path.split(program)
+ if fpath:
+ if is_exe(program):
+ return program
+ else:
+ for path in os.environ["PATH"].split(os.pathsep):
+ exe_file = os.path.join(path, program)
+ if is_exe(exe_file):
+ return exe_file
+ return None
+
+# ===================================================
+# Disassembly for an SBFunction or an SBSymbol object
+# ===================================================
+
+def disassemble(target, function_or_symbol):
+ """Disassemble the function or symbol given a target.
+
+ It returns the disassembly content in a string object.
+ """
+ buf = SixStringIO()
+ insts = function_or_symbol.GetInstructions(target)
+ for i in insts:
+ print(i, file=buf)
+ return buf.getvalue()
+
+# ==========================================================
+# Integer (byte size 1, 2, 4, and 8) to bytearray conversion
+# ==========================================================
+
+def int_to_bytearray(val, bytesize):
+ """Utility function to convert an integer into a bytearray.
+
+ It returns the bytearray in the little endian format. It is easy to get the
+ big endian format, just do ba.reverse() on the returned object.
+ """
+ import struct
+
+ if bytesize == 1:
+ return bytearray([val])
+
+ # Little endian followed by a format character.
+ template = "<%c"
+ if bytesize == 2:
+ fmt = template % 'h'
+ elif bytesize == 4:
+ fmt = template % 'i'
+ elif bytesize == 4:
+ fmt = template % 'q'
+ else:
+ return None
+
+ packed = struct.pack(fmt, val)
+ return bytearray(list(map(ord, packed)))
+
+def bytearray_to_int(bytes, bytesize):
+ """Utility function to convert a bytearray into an integer.
+
+ It interprets the bytearray in the little endian format. For a big endian
+ bytearray, just do ba.reverse() on the object before passing it in.
+ """
+ import struct
+
+ if bytesize == 1:
+ return bytes[0]
+
+ # Little endian followed by a format character.
+ template = "<%c"
+ if bytesize == 2:
+ fmt = template % 'h'
+ elif bytesize == 4:
+ fmt = template % 'i'
+ elif bytesize == 4:
+ fmt = template % 'q'
+ else:
+ return None
+
+ unpacked = struct.unpack(fmt, str(bytes))
+ return unpacked[0]
+
+
+# ==============================================================
+# Get the description of an lldb object or None if not available
+# ==============================================================
+def get_description(obj, option=None):
+ """Calls lldb_obj.GetDescription() and returns a string, or None.
+
+ For SBTarget, SBBreakpointLocation, and SBWatchpoint lldb objects, an extra
+ option can be passed in to describe the detailed level of description
+ desired:
+ o lldb.eDescriptionLevelBrief
+ o lldb.eDescriptionLevelFull
+ o lldb.eDescriptionLevelVerbose
+ """
+ method = getattr(obj, 'GetDescription')
+ if not method:
+ return None
+ tuple = (lldb.SBTarget, lldb.SBBreakpointLocation, lldb.SBWatchpoint)
+ if isinstance(obj, tuple):
+ if option is None:
+ option = lldb.eDescriptionLevelBrief
+
+ stream = lldb.SBStream()
+ if option is None:
+ success = method(stream)
+ else:
+ success = method(stream, option)
+ if not success:
+ return None
+ return stream.GetData()
+
+
+# =================================================
+# Convert some enum value to its string counterpart
+# =================================================
+
+def state_type_to_str(enum):
+ """Returns the stateType string given an enum."""
+ if enum == lldb.eStateInvalid:
+ return "invalid"
+ elif enum == lldb.eStateUnloaded:
+ return "unloaded"
+ elif enum == lldb.eStateConnected:
+ return "connected"
+ elif enum == lldb.eStateAttaching:
+ return "attaching"
+ elif enum == lldb.eStateLaunching:
+ return "launching"
+ elif enum == lldb.eStateStopped:
+ return "stopped"
+ elif enum == lldb.eStateRunning:
+ return "running"
+ elif enum == lldb.eStateStepping:
+ return "stepping"
+ elif enum == lldb.eStateCrashed:
+ return "crashed"
+ elif enum == lldb.eStateDetached:
+ return "detached"
+ elif enum == lldb.eStateExited:
+ return "exited"
+ elif enum == lldb.eStateSuspended:
+ return "suspended"
+ else:
+ raise Exception("Unknown StateType enum")
+
+def stop_reason_to_str(enum):
+ """Returns the stopReason string given an enum."""
+ if enum == lldb.eStopReasonInvalid:
+ return "invalid"
+ elif enum == lldb.eStopReasonNone:
+ return "none"
+ elif enum == lldb.eStopReasonTrace:
+ return "trace"
+ elif enum == lldb.eStopReasonBreakpoint:
+ return "breakpoint"
+ elif enum == lldb.eStopReasonWatchpoint:
+ return "watchpoint"
+ elif enum == lldb.eStopReasonExec:
+ return "exec"
+ elif enum == lldb.eStopReasonSignal:
+ return "signal"
+ elif enum == lldb.eStopReasonException:
+ return "exception"
+ elif enum == lldb.eStopReasonPlanComplete:
+ return "plancomplete"
+ elif enum == lldb.eStopReasonThreadExiting:
+ return "threadexiting"
+ else:
+ raise Exception("Unknown StopReason enum")
+
+def symbol_type_to_str(enum):
+ """Returns the symbolType string given an enum."""
+ if enum == lldb.eSymbolTypeInvalid:
+ return "invalid"
+ elif enum == lldb.eSymbolTypeAbsolute:
+ return "absolute"
+ elif enum == lldb.eSymbolTypeCode:
+ return "code"
+ elif enum == lldb.eSymbolTypeData:
+ return "data"
+ elif enum == lldb.eSymbolTypeTrampoline:
+ return "trampoline"
+ elif enum == lldb.eSymbolTypeRuntime:
+ return "runtime"
+ elif enum == lldb.eSymbolTypeException:
+ return "exception"
+ elif enum == lldb.eSymbolTypeSourceFile:
+ return "sourcefile"
+ elif enum == lldb.eSymbolTypeHeaderFile:
+ return "headerfile"
+ elif enum == lldb.eSymbolTypeObjectFile:
+ return "objectfile"
+ elif enum == lldb.eSymbolTypeCommonBlock:
+ return "commonblock"
+ elif enum == lldb.eSymbolTypeBlock:
+ return "block"
+ elif enum == lldb.eSymbolTypeLocal:
+ return "local"
+ elif enum == lldb.eSymbolTypeParam:
+ return "param"
+ elif enum == lldb.eSymbolTypeVariable:
+ return "variable"
+ elif enum == lldb.eSymbolTypeVariableType:
+ return "variabletype"
+ elif enum == lldb.eSymbolTypeLineEntry:
+ return "lineentry"
+ elif enum == lldb.eSymbolTypeLineHeader:
+ return "lineheader"
+ elif enum == lldb.eSymbolTypeScopeBegin:
+ return "scopebegin"
+ elif enum == lldb.eSymbolTypeScopeEnd:
+ return "scopeend"
+ elif enum == lldb.eSymbolTypeAdditional:
+ return "additional"
+ elif enum == lldb.eSymbolTypeCompiler:
+ return "compiler"
+ elif enum == lldb.eSymbolTypeInstrumentation:
+ return "instrumentation"
+ elif enum == lldb.eSymbolTypeUndefined:
+ return "undefined"
+
+def value_type_to_str(enum):
+ """Returns the valueType string given an enum."""
+ if enum == lldb.eValueTypeInvalid:
+ return "invalid"
+ elif enum == lldb.eValueTypeVariableGlobal:
+ return "global_variable"
+ elif enum == lldb.eValueTypeVariableStatic:
+ return "static_variable"
+ elif enum == lldb.eValueTypeVariableArgument:
+ return "argument_variable"
+ elif enum == lldb.eValueTypeVariableLocal:
+ return "local_variable"
+ elif enum == lldb.eValueTypeRegister:
+ return "register"
+ elif enum == lldb.eValueTypeRegisterSet:
+ return "register_set"
+ elif enum == lldb.eValueTypeConstResult:
+ return "constant_result"
+ else:
+ raise Exception("Unknown ValueType enum")
+
+
+# ==================================================
+# Get stopped threads due to each stop reason.
+# ==================================================
+
+def sort_stopped_threads(process,
+ breakpoint_threads = None,
+ crashed_threads = None,
+ watchpoint_threads = None,
+ signal_threads = None,
+ exiting_threads = None,
+ other_threads = None):
+ """ Fills array *_threads with threads stopped for the corresponding stop
+ reason.
+ """
+ for lst in [breakpoint_threads,
+ watchpoint_threads,
+ signal_threads,
+ exiting_threads,
+ other_threads]:
+ if lst is not None:
+ lst[:] = []
+
+ for thread in process:
+ dispatched = False
+ for (reason, list) in [(lldb.eStopReasonBreakpoint, breakpoint_threads),
+ (lldb.eStopReasonException, crashed_threads),
+ (lldb.eStopReasonWatchpoint, watchpoint_threads),
+ (lldb.eStopReasonSignal, signal_threads),
+ (lldb.eStopReasonThreadExiting, exiting_threads),
+ (None, other_threads)]:
+ if not dispatched and list is not None:
+ if thread.GetStopReason() == reason or reason is None:
+ list.append(thread)
+ dispatched = True
+
+# ==================================================
+# Utility functions for setting breakpoints
+# ==================================================
+
+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):
+ """Set a breakpoint by file and line, returning the breakpoint number.
+
+ If extra_options is not None, then we append it to the breakpoint set command.
+
+ 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.
+
+ If loc_exact is true, we check that there is one location, and that location must be at the input file and line number."""
+
+ if file_name == None:
+ command = 'breakpoint set -l %d'%(line_number)
+ else:
+ command = 'breakpoint set -f "%s" -l %d'%(file_name, line_number)
+
+ if module_name:
+ command += " --shlib '%s'" % (module_name)
+
+ if extra_options:
+ command += " " + extra_options
+
+ break_results = run_break_set_command (test, command)
+
+ if num_expected_locations == 1 and loc_exact:
+ check_breakpoint_result (test, break_results, num_locations=num_expected_locations, file_name = file_name, line_number = line_number, module_name=module_name)
+ else:
+ check_breakpoint_result (test, break_results, num_locations = num_expected_locations)
+
+ return get_bpno_from_match (break_results)
+
+def run_break_set_by_symbol (test, symbol, extra_options = None, num_expected_locations = -1, sym_exact = False, module_name=None):
+ """Set a breakpoint by symbol name. Common options are the same as run_break_set_by_file_and_line.
+
+ If sym_exact is true, then the output symbol must match the input exactly, otherwise we do a substring match."""
+ command = 'breakpoint set -n "%s"'%(symbol)
+
+ if module_name:
+ command += " --shlib '%s'" % (module_name)
+
+ if extra_options:
+ command += " " + extra_options
+
+ break_results = run_break_set_command (test, command)
+
+ if num_expected_locations == 1 and sym_exact:
+ check_breakpoint_result (test, break_results, num_locations = num_expected_locations, symbol_name = symbol, module_name=module_name)
+ else:
+ check_breakpoint_result (test, break_results, num_locations = num_expected_locations)
+
+ return get_bpno_from_match (break_results)
+
+def run_break_set_by_selector (test, selector, extra_options = None, num_expected_locations = -1, module_name=None):
+ """Set a breakpoint by selector. Common options are the same as run_break_set_by_file_and_line."""
+
+ command = 'breakpoint set -S "%s"' % (selector)
+
+ if module_name:
+ command += ' --shlib "%s"' % (module_name)
+
+ if extra_options:
+ command += " " + extra_options
+
+ break_results = run_break_set_command (test, command)
+
+ if num_expected_locations == 1:
+ check_breakpoint_result (test, break_results, num_locations = num_expected_locations, symbol_name = selector, symbol_match_exact=False, module_name=module_name)
+ else:
+ check_breakpoint_result (test, break_results, num_locations = num_expected_locations)
+
+ return get_bpno_from_match (break_results)
+
+def run_break_set_by_regexp (test, regexp, extra_options=None, num_expected_locations=-1):
+ """Set a breakpoint by regular expression match on symbol name. Common options are the same as run_break_set_by_file_and_line."""
+
+ command = 'breakpoint set -r "%s"'%(regexp)
+ if extra_options:
+ command += " " + extra_options
+
+ break_results = run_break_set_command (test, command)
+
+ check_breakpoint_result (test, break_results, num_locations=num_expected_locations)
+
+ return get_bpno_from_match (break_results)
+
+def run_break_set_by_source_regexp (test, regexp, extra_options=None, num_expected_locations=-1):
+ """Set a breakpoint by source regular expression. Common options are the same as run_break_set_by_file_and_line."""
+ command = 'breakpoint set -p "%s"'%(regexp)
+ if extra_options:
+ command += " " + extra_options
+
+ break_results = run_break_set_command (test, command)
+
+ check_breakpoint_result (test, break_results, num_locations=num_expected_locations)
+
+ return get_bpno_from_match (break_results)
+
+def run_break_set_command (test, command):
+ """Run the command passed in - it must be some break set variant - and analyze the result.
+ Returns a dictionary of information gleaned from the command-line results.
+ Will assert if the breakpoint setting fails altogether.
+
+ Dictionary will contain:
+ bpno - breakpoint of the newly created breakpoint, -1 on error.
+ num_locations - number of locations set for the breakpoint.
+
+ If there is only one location, the dictionary MAY contain:
+ file - source file name
+ line_no - source line number
+ symbol - symbol name
+ inline_symbol - inlined symbol name
+ offset - offset from the original symbol
+ module - module
+ address - address at which the breakpoint was set."""
+
+ patterns = [r"^Breakpoint (?P<bpno>[0-9]+): (?P<num_locations>[0-9]+) locations\.$",
+ r"^Breakpoint (?P<bpno>[0-9]+): (?P<num_locations>no) locations \(pending\)\.",
+ 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]+)$",
+ r"^Breakpoint (?P<bpno>[0-9]+): where = (?P<module>.*)`(?P<symbol>.*)( \+ (?P<offset>[0-9]+)){0,1}, address = (?P<address>0x[0-9a-fA-F]+)$"]
+ match_object = test.match (command, patterns)
+ break_results = match_object.groupdict()
+
+ # We always insert the breakpoint number, setting it to -1 if we couldn't find it
+ # Also, make sure it gets stored as an integer.
+ if not 'bpno' in break_results:
+ break_results['bpno'] = -1
+ else:
+ break_results['bpno'] = int(break_results['bpno'])
+
+ # We always insert the number of locations
+ # If ONE location is set for the breakpoint, then the output doesn't mention locations, but it has to be 1...
+ # We also make sure it is an integer.
+
+ if not 'num_locations' in break_results:
+ num_locations = 1
+ else:
+ num_locations = break_results['num_locations']
+ if num_locations == 'no':
+ num_locations = 0
+ else:
+ num_locations = int(break_results['num_locations'])
+
+ break_results['num_locations'] = num_locations
+
+ if 'line_no' in break_results:
+ break_results['line_no'] = int(break_results['line_no'])
+
+ return break_results
+
+def get_bpno_from_match (break_results):
+ return int (break_results['bpno'])
+
+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):
+
+ out_num_locations = break_results['num_locations']
+
+ if num_locations == -1:
+ test.assertTrue (out_num_locations > 0, "Expecting one or more locations, got none.")
+ else:
+ test.assertTrue (num_locations == out_num_locations, "Expecting %d locations, got %d."%(num_locations, out_num_locations))
+
+ if file_name:
+ out_file_name = ""
+ if 'file' in break_results:
+ out_file_name = break_results['file']
+ test.assertTrue (file_name == out_file_name, "Breakpoint file name '%s' doesn't match resultant name '%s'."%(file_name, out_file_name))
+
+ if line_number != -1:
+ out_line_number = -1
+ if 'line_no' in break_results:
+ out_line_number = break_results['line_no']
+
+ test.assertTrue (line_number == out_line_number, "Breakpoint line number %s doesn't match resultant line %s."%(line_number, out_line_number))
+
+ if symbol_name:
+ out_symbol_name = ""
+ # Look first for the inlined symbol name, otherwise use the symbol name:
+ if 'inline_symbol' in break_results and break_results['inline_symbol']:
+ out_symbol_name = break_results['inline_symbol']
+ 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."""
+
+ for expected_state in states:
+ def get_next_event():
+ event = lldb.SBEvent()
+ if not listener.WaitForEvent(timeout, event):
+ test.fail("Timed out while waiting for a transition to state %s" %
+ lldb.SBDebugger.StateAsCString(expected_state))
+ return event
+
+ event = get_next_event()
+ while (lldb.SBProcess.GetStateFromEvent(event) == lldb.eStateStopped and
+ lldb.SBProcess.GetRestartedFromEvent(event)):
+ # Ignore restarted event and the subsequent running event.
+ event = get_next_event()
+ test.assertEqual(lldb.SBProcess.GetStateFromEvent(event), lldb.eStateRunning,
+ "Restarted event followed by a running event")
+ event = get_next_event()
+
+ test.assertEqual(lldb.SBProcess.GetStateFromEvent(event), expected_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, mycallable, reason):
+ if six.callable(mycallable):
+ if mycallable(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))
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