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CommandInterpreter.cpp
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CommandInterpreter.cpp
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//===-- CommandInterpreter.cpp ----------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <memory>
#include <stdlib.h>
#include <string>
#include <vector>
#include "CommandObjectScript.h"
#include "lldb/Interpreter/CommandObjectRegexCommand.h"
#include "Commands/CommandObjectApropos.h"
#include "Commands/CommandObjectBreakpoint.h"
#include "Commands/CommandObjectBugreport.h"
#include "Commands/CommandObjectCommands.h"
#include "Commands/CommandObjectDisassemble.h"
#include "Commands/CommandObjectExpression.h"
#include "Commands/CommandObjectFrame.h"
#include "Commands/CommandObjectGUI.h"
#include "Commands/CommandObjectHelp.h"
#include "Commands/CommandObjectLanguage.h"
#include "Commands/CommandObjectLog.h"
#include "Commands/CommandObjectMemory.h"
#include "Commands/CommandObjectPlatform.h"
#include "Commands/CommandObjectPlugin.h"
#include "Commands/CommandObjectProcess.h"
#include "Commands/CommandObjectQuit.h"
#include "Commands/CommandObjectRegister.h"
#include "Commands/CommandObjectReproducer.h"
#include "Commands/CommandObjectSettings.h"
#include "Commands/CommandObjectSource.h"
#include "Commands/CommandObjectStats.h"
#include "Commands/CommandObjectTarget.h"
#include "Commands/CommandObjectThread.h"
#include "Commands/CommandObjectType.h"
#include "Commands/CommandObjectVersion.h"
#include "Commands/CommandObjectWatchpoint.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/State.h"
#include "lldb/Utility/Stream.h"
#include "lldb/Utility/Timer.h"
#ifndef LLDB_DISABLE_LIBEDIT
#include "lldb/Host/Editline.h"
#endif
#include "lldb/Host/Host.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Interpreter/CommandCompletions.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/OptionValueProperties.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Interpreter/Property.h"
#include "lldb/Utility/Args.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/TargetList.h"
#include "lldb/Target/Thread.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
using namespace lldb;
using namespace lldb_private;
static const char *k_white_space = " \t\v";
static constexpr bool NoGlobalSetting = true;
static constexpr uintptr_t DefaultValueTrue = true;
static constexpr uintptr_t DefaultValueFalse = false;
static constexpr const char *NoCStrDefault = nullptr;
static constexpr PropertyDefinition g_properties[] = {
{"expand-regex-aliases", OptionValue::eTypeBoolean, NoGlobalSetting,
DefaultValueFalse, NoCStrDefault, {},
"If true, regular expression alias commands will show the "
"expanded command that will be executed. This can be used to "
"debug new regular expression alias commands."},
{"prompt-on-quit", OptionValue::eTypeBoolean, NoGlobalSetting,
DefaultValueTrue, NoCStrDefault, {},
"If true, LLDB will prompt you before quitting if there are any live "
"processes being debugged. If false, LLDB will quit without asking in any "
"case."},
{"stop-command-source-on-error", OptionValue::eTypeBoolean, NoGlobalSetting,
DefaultValueTrue, NoCStrDefault, {},
"If true, LLDB will stop running a 'command source' "
"script upon encountering an error."},
{"space-repl-prompts", OptionValue::eTypeBoolean, NoGlobalSetting,
DefaultValueFalse, NoCStrDefault, {},
"If true, blank lines will be printed between between REPL submissions."},
{"echo-commands", OptionValue::eTypeBoolean, NoGlobalSetting,
DefaultValueTrue, NoCStrDefault, {},
"If true, commands will be echoed before they are evaluated."},
{"echo-comment-commands", OptionValue::eTypeBoolean, NoGlobalSetting,
DefaultValueTrue, NoCStrDefault, {},
"If true, commands will be echoed even if they are pure comment lines."}};
enum {
ePropertyExpandRegexAliases = 0,
ePropertyPromptOnQuit = 1,
ePropertyStopCmdSourceOnError = 2,
eSpaceReplPrompts = 3,
eEchoCommands = 4,
eEchoCommentCommands = 5
};
ConstString &CommandInterpreter::GetStaticBroadcasterClass() {
static ConstString class_name("lldb.commandInterpreter");
return class_name;
}
CommandInterpreter::CommandInterpreter(Debugger &debugger,
ScriptLanguage script_language,
bool synchronous_execution)
: Broadcaster(debugger.GetBroadcasterManager(),
CommandInterpreter::GetStaticBroadcasterClass().AsCString()),
Properties(OptionValuePropertiesSP(
new OptionValueProperties(ConstString("interpreter")))),
IOHandlerDelegate(IOHandlerDelegate::Completion::LLDBCommand),
m_debugger(debugger), m_synchronous_execution(synchronous_execution),
m_skip_lldbinit_files(false), m_skip_app_init_files(false),
m_script_interpreter_sp(), m_command_io_handler_sp(), m_comment_char('#'),
m_batch_command_mode(false), m_truncation_warning(eNoTruncation),
m_command_source_depth(0), m_num_errors(0), m_quit_requested(false),
m_stopped_for_crash(false) {
debugger.SetScriptLanguage(script_language);
SetEventName(eBroadcastBitThreadShouldExit, "thread-should-exit");
SetEventName(eBroadcastBitResetPrompt, "reset-prompt");
SetEventName(eBroadcastBitQuitCommandReceived, "quit");
CheckInWithManager();
m_collection_sp->Initialize(g_properties);
}
bool CommandInterpreter::GetExpandRegexAliases() const {
const uint32_t idx = ePropertyExpandRegexAliases;
return m_collection_sp->GetPropertyAtIndexAsBoolean(
nullptr, idx, g_properties[idx].default_uint_value != 0);
}
bool CommandInterpreter::GetPromptOnQuit() const {
const uint32_t idx = ePropertyPromptOnQuit;
return m_collection_sp->GetPropertyAtIndexAsBoolean(
nullptr, idx, g_properties[idx].default_uint_value != 0);
}
void CommandInterpreter::SetPromptOnQuit(bool b) {
const uint32_t idx = ePropertyPromptOnQuit;
m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, b);
}
bool CommandInterpreter::GetEchoCommands() const {
const uint32_t idx = eEchoCommands;
return m_collection_sp->GetPropertyAtIndexAsBoolean(
nullptr, idx, g_properties[idx].default_uint_value != 0);
}
void CommandInterpreter::SetEchoCommands(bool b) {
const uint32_t idx = eEchoCommands;
m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, b);
}
bool CommandInterpreter::GetEchoCommentCommands() const {
const uint32_t idx = eEchoCommentCommands;
return m_collection_sp->GetPropertyAtIndexAsBoolean(
nullptr, idx, g_properties[idx].default_uint_value != 0);
}
void CommandInterpreter::SetEchoCommentCommands(bool b) {
const uint32_t idx = eEchoCommentCommands;
m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, b);
}
void CommandInterpreter::AllowExitCodeOnQuit(bool allow) {
m_allow_exit_code = allow;
if (!allow)
m_quit_exit_code.reset();
}
bool CommandInterpreter::SetQuitExitCode(int exit_code) {
if (!m_allow_exit_code)
return false;
m_quit_exit_code = exit_code;
return true;
}
int CommandInterpreter::GetQuitExitCode(bool &exited) const {
exited = m_quit_exit_code.hasValue();
if (exited)
return *m_quit_exit_code;
return 0;
}
void CommandInterpreter::ResolveCommand(const char *command_line,
CommandReturnObject &result) {
std::string command = command_line;
if (ResolveCommandImpl(command, result) != nullptr) {
result.AppendMessageWithFormat("%s", command.c_str());
result.SetStatus(eReturnStatusSuccessFinishResult);
}
}
bool CommandInterpreter::GetStopCmdSourceOnError() const {
const uint32_t idx = ePropertyStopCmdSourceOnError;
return m_collection_sp->GetPropertyAtIndexAsBoolean(
nullptr, idx, g_properties[idx].default_uint_value != 0);
}
bool CommandInterpreter::GetSpaceReplPrompts() const {
const uint32_t idx = eSpaceReplPrompts;
return m_collection_sp->GetPropertyAtIndexAsBoolean(
nullptr, idx, g_properties[idx].default_uint_value != 0);
}
void CommandInterpreter::Initialize() {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, LLVM_PRETTY_FUNCTION);
CommandReturnObject result;
LoadCommandDictionary();
// An alias arguments vector to reuse - reset it before use...
OptionArgVectorSP alias_arguments_vector_sp(new OptionArgVector);
// Set up some initial aliases.
CommandObjectSP cmd_obj_sp = GetCommandSPExact("quit", false);
if (cmd_obj_sp) {
AddAlias("q", cmd_obj_sp);
AddAlias("exit", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("_regexp-attach", false);
if (cmd_obj_sp)
AddAlias("attach", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("process detach", false);
if (cmd_obj_sp) {
AddAlias("detach", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("process continue", false);
if (cmd_obj_sp) {
AddAlias("c", cmd_obj_sp);
AddAlias("continue", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("_regexp-break", false);
if (cmd_obj_sp)
AddAlias("b", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("_regexp-tbreak", false);
if (cmd_obj_sp)
AddAlias("tbreak", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("thread step-inst", false);
if (cmd_obj_sp) {
AddAlias("stepi", cmd_obj_sp);
AddAlias("si", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("thread step-inst-over", false);
if (cmd_obj_sp) {
AddAlias("nexti", cmd_obj_sp);
AddAlias("ni", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("thread step-in", false);
if (cmd_obj_sp) {
AddAlias("s", cmd_obj_sp);
AddAlias("step", cmd_obj_sp);
CommandAlias *sif_alias = AddAlias(
"sif", cmd_obj_sp, "--end-linenumber block --step-in-target %1");
if (sif_alias) {
sif_alias->SetHelp("Step through the current block, stopping if you step "
"directly into a function whose name matches the "
"TargetFunctionName.");
sif_alias->SetSyntax("sif <TargetFunctionName>");
}
}
cmd_obj_sp = GetCommandSPExact("thread step-over", false);
if (cmd_obj_sp) {
AddAlias("n", cmd_obj_sp);
AddAlias("next", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("thread step-out", false);
if (cmd_obj_sp) {
AddAlias("finish", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("frame select", false);
if (cmd_obj_sp) {
AddAlias("f", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("thread select", false);
if (cmd_obj_sp) {
AddAlias("t", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("_regexp-jump", false);
if (cmd_obj_sp) {
AddAlias("j", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
AddAlias("jump", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
}
cmd_obj_sp = GetCommandSPExact("_regexp-list", false);
if (cmd_obj_sp) {
AddAlias("l", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
AddAlias("list", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
}
cmd_obj_sp = GetCommandSPExact("_regexp-env", false);
if (cmd_obj_sp)
AddAlias("env", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("memory read", false);
if (cmd_obj_sp)
AddAlias("x", cmd_obj_sp);
cmd_obj_sp = GetCommandSPExact("_regexp-up", false);
if (cmd_obj_sp)
AddAlias("up", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("_regexp-down", false);
if (cmd_obj_sp)
AddAlias("down", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("_regexp-display", false);
if (cmd_obj_sp)
AddAlias("display", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("disassemble", false);
if (cmd_obj_sp)
AddAlias("dis", cmd_obj_sp);
cmd_obj_sp = GetCommandSPExact("disassemble", false);
if (cmd_obj_sp)
AddAlias("di", cmd_obj_sp);
cmd_obj_sp = GetCommandSPExact("_regexp-undisplay", false);
if (cmd_obj_sp)
AddAlias("undisplay", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("_regexp-bt", false);
if (cmd_obj_sp)
AddAlias("bt", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
cmd_obj_sp = GetCommandSPExact("target create", false);
if (cmd_obj_sp)
AddAlias("file", cmd_obj_sp);
cmd_obj_sp = GetCommandSPExact("target modules", false);
if (cmd_obj_sp)
AddAlias("image", cmd_obj_sp);
alias_arguments_vector_sp = std::make_shared<OptionArgVector>();
cmd_obj_sp = GetCommandSPExact("expression", false);
if (cmd_obj_sp) {
AddAlias("p", cmd_obj_sp, "--")->SetHelpLong("");
AddAlias("print", cmd_obj_sp, "--")->SetHelpLong("");
AddAlias("call", cmd_obj_sp, "--")->SetHelpLong("");
if (auto po = AddAlias("po", cmd_obj_sp, "-O --")) {
po->SetHelp("Evaluate an expression on the current thread. Displays any "
"returned value with formatting "
"controlled by the type's author.");
po->SetHelpLong("");
}
AddAlias("parray", cmd_obj_sp, "--element-count %1 --")->SetHelpLong("");
AddAlias("poarray", cmd_obj_sp,
"--object-description --element-count %1 --")
->SetHelpLong("");
}
cmd_obj_sp = GetCommandSPExact("process kill", false);
if (cmd_obj_sp) {
AddAlias("kill", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("process launch", false);
if (cmd_obj_sp) {
alias_arguments_vector_sp = std::make_shared<OptionArgVector>();
#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
AddAlias("r", cmd_obj_sp, "--");
AddAlias("run", cmd_obj_sp, "--");
#else
#if defined(__APPLE__)
std::string shell_option;
shell_option.append("--shell-expand-args");
shell_option.append(" true");
shell_option.append(" --");
AddAlias("r", cmd_obj_sp, "--shell-expand-args true --");
AddAlias("run", cmd_obj_sp, "--shell-expand-args true --");
#else
StreamString defaultshell;
defaultshell.Printf("--shell=%s --",
HostInfo::GetDefaultShell().GetPath().c_str());
AddAlias("r", cmd_obj_sp, defaultshell.GetString());
AddAlias("run", cmd_obj_sp, defaultshell.GetString());
#endif
#endif
}
cmd_obj_sp = GetCommandSPExact("target symbols add", false);
if (cmd_obj_sp) {
AddAlias("add-dsym", cmd_obj_sp);
}
cmd_obj_sp = GetCommandSPExact("breakpoint set", false);
if (cmd_obj_sp) {
AddAlias("rbreak", cmd_obj_sp, "--func-regex %1");
}
cmd_obj_sp = GetCommandSPExact("frame variable", false);
if (cmd_obj_sp) {
AddAlias("v", cmd_obj_sp);
AddAlias("var", cmd_obj_sp);
AddAlias("vo", cmd_obj_sp, "--object-description");
}
}
void CommandInterpreter::Clear() {
m_command_io_handler_sp.reset();
if (m_script_interpreter_sp)
m_script_interpreter_sp->Clear();
}
const char *CommandInterpreter::ProcessEmbeddedScriptCommands(const char *arg) {
// This function has not yet been implemented.
// Look for any embedded script command
// If found,
// get interpreter object from the command dictionary,
// call execute_one_command on it,
// get the results as a string,
// substitute that string for current stuff.
return arg;
}
void CommandInterpreter::LoadCommandDictionary() {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, LLVM_PRETTY_FUNCTION);
lldb::ScriptLanguage script_language = m_debugger.GetScriptLanguage();
m_command_dict["apropos"] = CommandObjectSP(new CommandObjectApropos(*this));
m_command_dict["breakpoint"] =
CommandObjectSP(new CommandObjectMultiwordBreakpoint(*this));
m_command_dict["bugreport"] =
CommandObjectSP(new CommandObjectMultiwordBugreport(*this));
m_command_dict["command"] =
CommandObjectSP(new CommandObjectMultiwordCommands(*this));
m_command_dict["disassemble"] =
CommandObjectSP(new CommandObjectDisassemble(*this));
m_command_dict["expression"] =
CommandObjectSP(new CommandObjectExpression(*this));
m_command_dict["frame"] =
CommandObjectSP(new CommandObjectMultiwordFrame(*this));
m_command_dict["gui"] = CommandObjectSP(new CommandObjectGUI(*this));
m_command_dict["help"] = CommandObjectSP(new CommandObjectHelp(*this));
m_command_dict["log"] = CommandObjectSP(new CommandObjectLog(*this));
m_command_dict["memory"] = CommandObjectSP(new CommandObjectMemory(*this));
m_command_dict["platform"] =
CommandObjectSP(new CommandObjectPlatform(*this));
m_command_dict["plugin"] = CommandObjectSP(new CommandObjectPlugin(*this));
m_command_dict["process"] =
CommandObjectSP(new CommandObjectMultiwordProcess(*this));
m_command_dict["quit"] = CommandObjectSP(new CommandObjectQuit(*this));
m_command_dict["register"] =
CommandObjectSP(new CommandObjectRegister(*this));
m_command_dict["reproducer"] =
CommandObjectSP(new CommandObjectReproducer(*this));
m_command_dict["script"] =
CommandObjectSP(new CommandObjectScript(*this, script_language));
m_command_dict["settings"] =
CommandObjectSP(new CommandObjectMultiwordSettings(*this));
m_command_dict["source"] =
CommandObjectSP(new CommandObjectMultiwordSource(*this));
m_command_dict["statistics"] = CommandObjectSP(new CommandObjectStats(*this));
m_command_dict["target"] =
CommandObjectSP(new CommandObjectMultiwordTarget(*this));
m_command_dict["thread"] =
CommandObjectSP(new CommandObjectMultiwordThread(*this));
m_command_dict["type"] = CommandObjectSP(new CommandObjectType(*this));
m_command_dict["version"] = CommandObjectSP(new CommandObjectVersion(*this));
m_command_dict["watchpoint"] =
CommandObjectSP(new CommandObjectMultiwordWatchpoint(*this));
m_command_dict["language"] =
CommandObjectSP(new CommandObjectLanguage(*this));
const char *break_regexes[][2] = {
{"^(.*[^[:space:]])[[:space:]]*:[[:space:]]*([[:digit:]]+)[[:space:]]*$",
"breakpoint set --file '%1' --line %2"},
{"^/([^/]+)/$", "breakpoint set --source-pattern-regexp '%1'"},
{"^([[:digit:]]+)[[:space:]]*$", "breakpoint set --line %1"},
{"^\\*?(0x[[:xdigit:]]+)[[:space:]]*$", "breakpoint set --address %1"},
{"^[\"']?([-+]?\\[.*\\])[\"']?[[:space:]]*$",
"breakpoint set --name '%1'"},
{"^(-.*)$", "breakpoint set %1"},
{"^(.*[^[:space:]])`(.*[^[:space:]])[[:space:]]*$",
"breakpoint set --name '%2' --shlib '%1'"},
{"^\\&(.*[^[:space:]])[[:space:]]*$",
"breakpoint set --name '%1' --skip-prologue=0"},
{"^[\"']?(.*[^[:space:]\"'])[\"']?[[:space:]]*$",
"breakpoint set --name '%1'"}};
size_t num_regexes = llvm::array_lengthof(break_regexes);
std::unique_ptr<CommandObjectRegexCommand> break_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-break",
"Set a breakpoint using one of several shorthand formats.",
"\n"
"_regexp-break <filename>:<linenum>\n"
" main.c:12 // Break at line 12 of "
"main.c\n\n"
"_regexp-break <linenum>\n"
" 12 // Break at line 12 of current "
"file\n\n"
"_regexp-break 0x<address>\n"
" 0x1234000 // Break at address "
"0x1234000\n\n"
"_regexp-break <name>\n"
" main // Break in 'main' after the "
"prologue\n\n"
"_regexp-break &<name>\n"
" &main // Break at first instruction "
"in 'main'\n\n"
"_regexp-break <module>`<name>\n"
" libc.so`malloc // Break in 'malloc' from "
"'libc.so'\n\n"
"_regexp-break /<source-regex>/\n"
" /break here/ // Break on source lines in "
"current file\n"
" // containing text 'break "
"here'.\n",
2,
CommandCompletions::eSymbolCompletion |
CommandCompletions::eSourceFileCompletion,
false));
if (break_regex_cmd_up) {
bool success = true;
for (size_t i = 0; i < num_regexes; i++) {
success = break_regex_cmd_up->AddRegexCommand(break_regexes[i][0],
break_regexes[i][1]);
if (!success)
break;
}
success =
break_regex_cmd_up->AddRegexCommand("^$", "breakpoint list --full");
if (success) {
CommandObjectSP break_regex_cmd_sp(break_regex_cmd_up.release());
m_command_dict[break_regex_cmd_sp->GetCommandName()] = break_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> tbreak_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-tbreak",
"Set a one-shot breakpoint using one of several shorthand formats.",
"\n"
"_regexp-break <filename>:<linenum>\n"
" main.c:12 // Break at line 12 of "
"main.c\n\n"
"_regexp-break <linenum>\n"
" 12 // Break at line 12 of current "
"file\n\n"
"_regexp-break 0x<address>\n"
" 0x1234000 // Break at address "
"0x1234000\n\n"
"_regexp-break <name>\n"
" main // Break in 'main' after the "
"prologue\n\n"
"_regexp-break &<name>\n"
" &main // Break at first instruction "
"in 'main'\n\n"
"_regexp-break <module>`<name>\n"
" libc.so`malloc // Break in 'malloc' from "
"'libc.so'\n\n"
"_regexp-break /<source-regex>/\n"
" /break here/ // Break on source lines in "
"current file\n"
" // containing text 'break "
"here'.\n",
2,
CommandCompletions::eSymbolCompletion |
CommandCompletions::eSourceFileCompletion,
false));
if (tbreak_regex_cmd_up) {
bool success = true;
for (size_t i = 0; i < num_regexes; i++) {
// If you add a resultant command string longer than 1024 characters be
// sure to increase the size of this buffer.
char buffer[1024];
int num_printed =
snprintf(buffer, 1024, "%s %s", break_regexes[i][1], "-o 1");
lldbassert(num_printed < 1024);
UNUSED_IF_ASSERT_DISABLED(num_printed);
success =
tbreak_regex_cmd_up->AddRegexCommand(break_regexes[i][0], buffer);
if (!success)
break;
}
success =
tbreak_regex_cmd_up->AddRegexCommand("^$", "breakpoint list --full");
if (success) {
CommandObjectSP tbreak_regex_cmd_sp(tbreak_regex_cmd_up.release());
m_command_dict[tbreak_regex_cmd_sp->GetCommandName()] =
tbreak_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> attach_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-attach", "Attach to process by ID or name.",
"_regexp-attach <pid> | <process-name>", 2, 0, false));
if (attach_regex_cmd_up) {
if (attach_regex_cmd_up->AddRegexCommand("^([0-9]+)[[:space:]]*$",
"process attach --pid %1") &&
attach_regex_cmd_up->AddRegexCommand(
"^(-.*|.* -.*)$", "process attach %1") && // Any options that are
// specified get passed to
// 'process attach'
attach_regex_cmd_up->AddRegexCommand("^(.+)$",
"process attach --name '%1'") &&
attach_regex_cmd_up->AddRegexCommand("^$", "process attach")) {
CommandObjectSP attach_regex_cmd_sp(attach_regex_cmd_up.release());
m_command_dict[attach_regex_cmd_sp->GetCommandName()] =
attach_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> down_regex_cmd_up(
new CommandObjectRegexCommand(*this, "_regexp-down",
"Select a newer stack frame. Defaults to "
"moving one frame, a numeric argument can "
"specify an arbitrary number.",
"_regexp-down [<count>]", 2, 0, false));
if (down_regex_cmd_up) {
if (down_regex_cmd_up->AddRegexCommand("^$", "frame select -r -1") &&
down_regex_cmd_up->AddRegexCommand("^([0-9]+)$",
"frame select -r -%1")) {
CommandObjectSP down_regex_cmd_sp(down_regex_cmd_up.release());
m_command_dict[down_regex_cmd_sp->GetCommandName()] = down_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> up_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-up",
"Select an older stack frame. Defaults to moving one "
"frame, a numeric argument can specify an arbitrary number.",
"_regexp-up [<count>]", 2, 0, false));
if (up_regex_cmd_up) {
if (up_regex_cmd_up->AddRegexCommand("^$", "frame select -r 1") &&
up_regex_cmd_up->AddRegexCommand("^([0-9]+)$", "frame select -r %1")) {
CommandObjectSP up_regex_cmd_sp(up_regex_cmd_up.release());
m_command_dict[up_regex_cmd_sp->GetCommandName()] = up_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> display_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-display",
"Evaluate an expression at every stop (see 'help target stop-hook'.)",
"_regexp-display expression", 2, 0, false));
if (display_regex_cmd_up) {
if (display_regex_cmd_up->AddRegexCommand(
"^(.+)$", "target stop-hook add -o \"expr -- %1\"")) {
CommandObjectSP display_regex_cmd_sp(display_regex_cmd_up.release());
m_command_dict[display_regex_cmd_sp->GetCommandName()] =
display_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> undisplay_regex_cmd_up(
new CommandObjectRegexCommand(*this, "_regexp-undisplay",
"Stop displaying expression at every "
"stop (specified by stop-hook index.)",
"_regexp-undisplay stop-hook-number", 2, 0,
false));
if (undisplay_regex_cmd_up) {
if (undisplay_regex_cmd_up->AddRegexCommand("^([0-9]+)$",
"target stop-hook delete %1")) {
CommandObjectSP undisplay_regex_cmd_sp(undisplay_regex_cmd_up.release());
m_command_dict[undisplay_regex_cmd_sp->GetCommandName()] =
undisplay_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> connect_gdb_remote_cmd_up(
new CommandObjectRegexCommand(
*this, "gdb-remote",
"Connect to a process via remote GDB server. "
"If no host is specifed, localhost is assumed.",
"gdb-remote [<hostname>:]<portnum>", 2, 0, false));
if (connect_gdb_remote_cmd_up) {
if (connect_gdb_remote_cmd_up->AddRegexCommand(
"^([^:]+|\\[[0-9a-fA-F:]+.*\\]):([0-9]+)$",
"process connect --plugin gdb-remote connect://%1:%2") &&
connect_gdb_remote_cmd_up->AddRegexCommand(
"^([[:digit:]]+)$",
"process connect --plugin gdb-remote connect://localhost:%1")) {
CommandObjectSP command_sp(connect_gdb_remote_cmd_up.release());
m_command_dict[command_sp->GetCommandName()] = command_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> connect_kdp_remote_cmd_up(
new CommandObjectRegexCommand(
*this, "kdp-remote",
"Connect to a process via remote KDP server. "
"If no UDP port is specified, port 41139 is "
"assumed.",
"kdp-remote <hostname>[:<portnum>]", 2, 0, false));
if (connect_kdp_remote_cmd_up) {
if (connect_kdp_remote_cmd_up->AddRegexCommand(
"^([^:]+:[[:digit:]]+)$",
"process connect --plugin kdp-remote udp://%1") &&
connect_kdp_remote_cmd_up->AddRegexCommand(
"^(.+)$", "process connect --plugin kdp-remote udp://%1:41139")) {
CommandObjectSP command_sp(connect_kdp_remote_cmd_up.release());
m_command_dict[command_sp->GetCommandName()] = command_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> bt_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-bt",
"Show the current thread's call stack. Any numeric argument "
"displays at most that many "
"frames. The argument 'all' displays all threads.",
"bt [<digit> | all]", 2, 0, false));
if (bt_regex_cmd_up) {
// accept but don't document "bt -c <number>" -- before bt was a regex
// command if you wanted to backtrace three frames you would do "bt -c 3"
// but the intention is to have this emulate the gdb "bt" command and so
// now "bt 3" is the preferred form, in line with gdb.
if (bt_regex_cmd_up->AddRegexCommand("^([[:digit:]]+)$",
"thread backtrace -c %1") &&
bt_regex_cmd_up->AddRegexCommand("^-c ([[:digit:]]+)$",
"thread backtrace -c %1") &&
bt_regex_cmd_up->AddRegexCommand("^all$", "thread backtrace all") &&
bt_regex_cmd_up->AddRegexCommand("^$", "thread backtrace")) {
CommandObjectSP command_sp(bt_regex_cmd_up.release());
m_command_dict[command_sp->GetCommandName()] = command_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> list_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-list",
"List relevant source code using one of several shorthand formats.",
"\n"
"_regexp-list <file>:<line> // List around specific file/line\n"
"_regexp-list <line> // List current file around specified "
"line\n"
"_regexp-list <function-name> // List specified function\n"
"_regexp-list 0x<address> // List around specified address\n"
"_regexp-list -[<count>] // List previous <count> lines\n"
"_regexp-list // List subsequent lines",
2, CommandCompletions::eSourceFileCompletion, false));
if (list_regex_cmd_up) {
if (list_regex_cmd_up->AddRegexCommand("^([0-9]+)[[:space:]]*$",
"source list --line %1") &&
list_regex_cmd_up->AddRegexCommand(
"^(.*[^[:space:]])[[:space:]]*:[[:space:]]*([[:digit:]]+)[[:space:]"
"]*$",
"source list --file '%1' --line %2") &&
list_regex_cmd_up->AddRegexCommand(
"^\\*?(0x[[:xdigit:]]+)[[:space:]]*$",
"source list --address %1") &&
list_regex_cmd_up->AddRegexCommand("^-[[:space:]]*$",
"source list --reverse") &&
list_regex_cmd_up->AddRegexCommand(
"^-([[:digit:]]+)[[:space:]]*$",
"source list --reverse --count %1") &&
list_regex_cmd_up->AddRegexCommand("^(.+)$",
"source list --name \"%1\"") &&
list_regex_cmd_up->AddRegexCommand("^$", "source list")) {
CommandObjectSP list_regex_cmd_sp(list_regex_cmd_up.release());
m_command_dict[list_regex_cmd_sp->GetCommandName()] = list_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> env_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-env",
"Shorthand for viewing and setting environment variables.",
"\n"
"_regexp-env // Show enrivonment\n"
"_regexp-env <name>=<value> // Set an environment variable",
2, 0, false));
if (env_regex_cmd_up) {
if (env_regex_cmd_up->AddRegexCommand("^$",
"settings show target.env-vars") &&
env_regex_cmd_up->AddRegexCommand("^([A-Za-z_][A-Za-z_0-9]*=.*)$",
"settings set target.env-vars %1")) {
CommandObjectSP env_regex_cmd_sp(env_regex_cmd_up.release());
m_command_dict[env_regex_cmd_sp->GetCommandName()] = env_regex_cmd_sp;
}
}
std::unique_ptr<CommandObjectRegexCommand> jump_regex_cmd_up(
new CommandObjectRegexCommand(
*this, "_regexp-jump", "Set the program counter to a new address.",
"\n"
"_regexp-jump <line>\n"
"_regexp-jump +<line-offset> | -<line-offset>\n"
"_regexp-jump <file>:<line>\n"
"_regexp-jump *<addr>\n",
2, 0, false));
if (jump_regex_cmd_up) {
if (jump_regex_cmd_up->AddRegexCommand("^\\*(.*)$",
"thread jump --addr %1") &&
jump_regex_cmd_up->AddRegexCommand("^([0-9]+)$",
"thread jump --line %1") &&
jump_regex_cmd_up->AddRegexCommand("^([^:]+):([0-9]+)$",
"thread jump --file %1 --line %2") &&
jump_regex_cmd_up->AddRegexCommand("^([+\\-][0-9]+)$",
"thread jump --by %1")) {
CommandObjectSP jump_regex_cmd_sp(jump_regex_cmd_up.release());
m_command_dict[jump_regex_cmd_sp->GetCommandName()] = jump_regex_cmd_sp;
}
}
}
int CommandInterpreter::GetCommandNamesMatchingPartialString(
const char *cmd_str, bool include_aliases, StringList &matches,
StringList &descriptions) {
AddNamesMatchingPartialString(m_command_dict, cmd_str, matches,
&descriptions);
if (include_aliases) {
AddNamesMatchingPartialString(m_alias_dict, cmd_str, matches,
&descriptions);
}
return matches.GetSize();
}
CommandObjectSP
CommandInterpreter::GetCommandSP(llvm::StringRef cmd_str, bool include_aliases,
bool exact, StringList *matches,
StringList *descriptions) const {
CommandObjectSP command_sp;
std::string cmd = cmd_str;
if (HasCommands()) {
auto pos = m_command_dict.find(cmd);
if (pos != m_command_dict.end())
command_sp = pos->second;
}
if (include_aliases && HasAliases()) {
auto alias_pos = m_alias_dict.find(cmd);
if (alias_pos != m_alias_dict.end())
command_sp = alias_pos->second;
}
if (HasUserCommands()) {
auto pos = m_user_dict.find(cmd);
if (pos != m_user_dict.end())
command_sp = pos->second;
}
if (!exact && !command_sp) {
// We will only get into here if we didn't find any exact matches.
CommandObjectSP user_match_sp, alias_match_sp, real_match_sp;
StringList local_matches;
if (matches == nullptr)
matches = &local_matches;
unsigned int num_cmd_matches = 0;
unsigned int num_alias_matches = 0;
unsigned int num_user_matches = 0;
// Look through the command dictionaries one by one, and if we get only one
// match from any of them in toto, then return that, otherwise return an
// empty CommandObjectSP and the list of matches.
if (HasCommands()) {
num_cmd_matches = AddNamesMatchingPartialString(m_command_dict, cmd_str,
*matches, descriptions);
}
if (num_cmd_matches == 1) {
cmd.assign(matches->GetStringAtIndex(0));
auto pos = m_command_dict.find(cmd);
if (pos != m_command_dict.end())
real_match_sp = pos->second;
}
if (include_aliases && HasAliases()) {
num_alias_matches = AddNamesMatchingPartialString(m_alias_dict, cmd_str,
*matches, descriptions);
}
if (num_alias_matches == 1) {
cmd.assign(matches->GetStringAtIndex(num_cmd_matches));
auto alias_pos = m_alias_dict.find(cmd);
if (alias_pos != m_alias_dict.end())
alias_match_sp = alias_pos->second;
}
if (HasUserCommands()) {
num_user_matches = AddNamesMatchingPartialString(m_user_dict, cmd_str,
*matches, descriptions);
}
if (num_user_matches == 1) {
cmd.assign(
matches->GetStringAtIndex(num_cmd_matches + num_alias_matches));
auto pos = m_user_dict.find(cmd);
if (pos != m_user_dict.end())
user_match_sp = pos->second;
}
// If we got exactly one match, return that, otherwise return the match
// list.
if (num_user_matches + num_cmd_matches + num_alias_matches == 1) {
if (num_cmd_matches)
return real_match_sp;
else if (num_alias_matches)
return alias_match_sp;
else
return user_match_sp;
}
} else if (matches && command_sp) {
matches->AppendString(cmd_str);
if (descriptions)
descriptions->AppendString(command_sp->GetHelp());
}
return command_sp;
}
bool CommandInterpreter::AddCommand(llvm::StringRef name,
const lldb::CommandObjectSP &cmd_sp,
bool can_replace) {
if (cmd_sp.get())
lldbassert((this == &cmd_sp->GetCommandInterpreter()) &&
"tried to add a CommandObject from a different interpreter");
if (name.empty())
return false;
std::string name_sstr(name);
auto name_iter = m_command_dict.find(name_sstr);
if (name_iter != m_command_dict.end()) {
if (!can_replace || !name_iter->second->IsRemovable())
return false;
name_iter->second = cmd_sp;
} else {
m_command_dict[name_sstr] = cmd_sp;
}
return true;
}
bool CommandInterpreter::AddUserCommand(llvm::StringRef name,
const lldb::CommandObjectSP &cmd_sp,
bool can_replace) {
if (cmd_sp.get())
lldbassert((this == &cmd_sp->GetCommandInterpreter()) &&
"tried to add a CommandObject from a different interpreter");
if (!name.empty()) {
// do not allow replacement of internal commands
if (CommandExists(name)) {
if (!can_replace)
return false;
if (!m_command_dict[name]->IsRemovable())
return false;
}