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Initial checkin of the LLVM Source-Level Debugger. This is incomplete, but

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a good start.  The status is documented in docs/SourceLevelDebugging.html


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10687 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-01-05 05:27:31 +00:00
parent 6dddfff750
commit 7af5c12597
6 changed files with 1546 additions and 0 deletions
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//===- CLICommand.h - Classes used to represent commands --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a small class hierarchy used to represent the various types
// of commands in the CLI debugger front-end.
//
//===----------------------------------------------------------------------===//
#ifndef CLICOMMAND_H
#define CLICOMMAND_H
#include <string>
#include <vector>
namespace llvm {
class CLIDebugger;
/// CLICommand - Base class of the hierarchy, used to provide the abstract
/// interface common to all commands.
///
class CLICommand {
/// ShortHelp, LongHelp - The short and long helps strings printed for the
/// command. The ShortHelp string should be a single line of text without a
/// newline. The LongHelp string should be a full description with
/// terminating newline.
std::string ShortHelp, LongHelp;
/// RefCount - This contains the number of entries in the CLIDebugger
/// CommandTable that points to this command.
unsigned RefCount;
/// OptionNames - This contains a list of names for the option. Keeping
/// track of this is done just to make the help output more helpful.
///
std::vector<std::string> OptionNames;
public:
CLICommand(const std::string &SH, const std::string &LH)
: ShortHelp(SH), LongHelp(LH), RefCount(0) {}
virtual ~CLICommand() {}
/// addRef/dropRef - Implement a simple reference counting scheme to make
/// sure we delete commands that are no longer used.
void addRef() { ++RefCount; }
void dropRef() {
if (--RefCount == 0) delete this;
}
/// getPrimaryOptionName - Return the first name the option was added under.
/// This is the name we report for the option in the help output.
std::string getPrimaryOptionName() const {
return OptionNames.empty() ? "" : OptionNames[0];
}
/// getOptionName - Return all of the names the option is registered as.
///
const std::vector<std::string> &getOptionNames() const {
return OptionNames;
}
/// addOptionName - Add a name that this option is known as.
///
void addOptionName(const std::string &Name) {
OptionNames.push_back(Name);
}
/// removeOptionName - Eliminate one of the names for this option.
///
void removeOptionName(const std::string &Name) {
unsigned i = 0;
for (; OptionNames[i] != Name; ++i)
assert(i+1 < OptionNames.size() && "Didn't find option name!");
OptionNames.erase(OptionNames.begin()+i);
}
/// getShortHelp - Return the short help string for this command.
///
const std::string &getShortHelp() { return ShortHelp; }
/// getLongHelp - Return the long help string for this command, if it
/// exists.
const std::string &getLongHelp() { return LongHelp; }
virtual void runCommand(CLIDebugger &D, std::string &Arguments) = 0;
};
/// BuiltinCLICommand - This class represents commands that are built directly
/// into the debugger.
class BuiltinCLICommand : public CLICommand {
// Impl - Pointer to the method that implements the command
void (CLIDebugger::*Impl)(std::string&);
public:
BuiltinCLICommand(const std::string &ShortHelp, const std::string &LongHelp,
void (CLIDebugger::*impl)(std::string&))
: CLICommand(ShortHelp, LongHelp), Impl(impl) {}
void runCommand(CLIDebugger &D, std::string &Arguments) {
(D.*Impl)(Arguments);
}
};
}
#endif

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//===-- CLIDebugger.cpp - Command Line Interface to the Debugger ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the main implementation of the Command Line Interface to
// the debugger.
//
//===----------------------------------------------------------------------===//
#include "CLIDebugger.h"
#include "CLICommand.h"
#include "llvm/Debugger/SourceFile.h"
#include "Support/StringExtras.h"
#include <iostream>
using namespace llvm;
/// CLIDebugger constructor - This initializes the debugger to its default
/// state, and initializes the command table.
///
CLIDebugger::CLIDebugger()
: TheProgramInfo(0), TheRuntimeInfo(0), Prompt("(llvm-db) "), ListSize(10) {
// Initialize instance variables
CurrentFile = 0;
LineListedStart = 1;
LineListedEnd = 1;
LastCurrentFrame = 0;
CurrentLanguage = 0;
CLICommand *C;
//===--------------------------------------------------------------------===//
// Program startup and shutdown options
//
addCommand("file", new BuiltinCLICommand(
"Use specified file as the program to be debugged",
"The debugger looks in the current directory and the program $PATH for the"
" specified LLVM program. It then unloads the currently loaded program and"
" loads the specified program.\n",
&CLIDebugger::fileCommand));
addCommand("create", new BuiltinCLICommand(
"Start the current program, stopping execution in main",
"This command creates an instance of the current program, but stops"
" execution immediately.",
&CLIDebugger::createCommand));
addCommand("kill", new BuiltinCLICommand(
"Kills the execution of the current program being debugged", "",
&CLIDebugger::killCommand));
addCommand("quit", new BuiltinCLICommand(
"Exit the debugger", "",
&CLIDebugger::quitCommand));
//===--------------------------------------------------------------------===//
// Program execution commands
//
addCommand("run", C = new BuiltinCLICommand(
"Start the program running from the beginning", "",
&CLIDebugger::runCommand));
addCommand("r", C);
addCommand("cont", C = new BuiltinCLICommand(
"Continue program being debugged until the next stop point", "",
&CLIDebugger::contCommand));
addCommand("c", C); addCommand("fg", C);
addCommand("step", C = new BuiltinCLICommand(
"Step program until it reaches a new source line", "",
&CLIDebugger::stepCommand));
addCommand("s", C);
addCommand("next", C = new BuiltinCLICommand(
"Step program until it reaches a new source line, stepping over calls", "",
&CLIDebugger::nextCommand));
addCommand("n", C);
addCommand("finish", new BuiltinCLICommand(
"Execute until the selected stack frame returns",
"Upon return, the value returned is printed and put in the value history.\n",
&CLIDebugger::finishCommand));
//===--------------------------------------------------------------------===//
// Stack frame commands
//
addCommand("backtrace", C = new BuiltinCLICommand(
"Print backtrace of all stack frames, or innermost COUNT frames",
"FIXME: describe. Takes 'n', '-n' or 'full'\n",
&CLIDebugger::backtraceCommand));
addCommand("bt", C);
addCommand("up", new BuiltinCLICommand(
"Select and print stack frame that called this one",
"An argument says how many frames up to go.\n",
&CLIDebugger::upCommand));
addCommand("down", new BuiltinCLICommand(
"Select and print stack frame called by this one",
"An argument says how many frames down go.\n",
&CLIDebugger::downCommand));
addCommand("frame", C = new BuiltinCLICommand(
"Select and print a stack frame",
"With no argument, print the selected stack frame. (See also 'info frame').\n"
"An argument specifies the frame to select.\n",
&CLIDebugger::frameCommand));
addCommand("f", C);
//===--------------------------------------------------------------------===//
// Breakpoint related commands
//
addCommand("break", C = new BuiltinCLICommand(
"Set breakpoint at specified line or function",
"FIXME: describe.\n",
&CLIDebugger::breakCommand));
addCommand("b", C);
//===--------------------------------------------------------------------===//
// Miscellaneous commands
//
addCommand("info", new BuiltinCLICommand(
"Generic command for showing things about the program being debugged",
"FIXME: document\n",
&CLIDebugger::infoCommand));
addCommand("list", C = new BuiltinCLICommand(
"List specified function or line",
"FIXME: document\n",
&CLIDebugger::listCommand));
addCommand("l", C);
addCommand("set", new BuiltinCLICommand(
"Change program or debugger variable",
"FIXME: document\n",
&CLIDebugger::setCommand));
addCommand("show", new BuiltinCLICommand(
"Generic command for showing things about the debugger",
"FIXME: document\n",
&CLIDebugger::showCommand));
addCommand("help", C = new BuiltinCLICommand(
"Prints information about available commands", "",
&CLIDebugger::helpCommand));
addCommand("h", C);
}
/// addCommand - Add a command to the CommandTable, potentially displacing a
/// preexisting command.
void CLIDebugger::addCommand(const std::string &Option, CLICommand *Cmd) {
assert(Cmd && "Cannot set a null command!");
CLICommand *&CS = CommandTable[Option];
if (CS == Cmd) return; // noop
// If we already have a command, decrement the command's reference count.
if (CS) {
CS->removeOptionName(Option);
CS->dropRef();
}
CS = Cmd;
// Remember that we are using this command.
Cmd->addRef();
Cmd->addOptionName(Option);
}
static bool isValidPrefix(const std::string &Prefix, const std::string &Option){
return Prefix.size() <= Option.size() &&
Prefix == std::string(Option.begin(), Option.begin()+Prefix.size());
}
/// getCommand - This looks up the specified command using a fuzzy match.
/// If the string exactly matches a command or is an unambiguous prefix of a
/// command, it returns the command. Otherwise it throws an exception
/// indicating the possible ambiguous choices.
CLICommand *CLIDebugger::getCommand(const std::string &Command) {
// Look up the command in the table.
std::map<std::string, CLICommand*>::iterator CI =
CommandTable.lower_bound(Command);
if (Command == "") {
throw "Null command not implemented yet.";
} else if (CI == CommandTable.end() ||
!isValidPrefix(Command, CI->first)) {
// If this command has no relation to anything in the command table,
// print the error message.
throw "Unknown command: '" + Command +
"'. Use 'help' for list of commands.";
} else if (CI->first == Command) {
// We have an exact match on the command
return CI->second;
} else {
// Otherwise, we have a prefix match. Check to see if this is
// unambiguous, and if so, run it.
std::map<std::string, CLICommand*>::iterator CI2 = CI;
// If the next command is a valid completion of this one, we are
// ambiguous.
if (++CI2 != CommandTable.end() && isValidPrefix(Command, CI2->first)) {
std::string ErrorMsg =
"Ambiguous command '" + Command + "'. Options: " + CI->first;
for (++CI; CI != CommandTable.end() &&
isValidPrefix(Command, CI->first); ++CI)
ErrorMsg += ", " + CI->first;
throw ErrorMsg;
} else {
// It's an unambiguous prefix of a command, use it.
return CI->second;
}
}
}
/// run - Start the debugger, returning when the user exits the debugger. This
/// starts the main event loop of the CLI debugger.
///
int CLIDebugger::run() {
std::string Command;
std::cout << Prompt;
// Continue reading commands until the end of file.
while (getline(std::cin, Command)) {
std::string Arguments = Command;
// Split off the command from the arguments to the command.
Command = getToken(Arguments, " \t\n\v\f\r\\/;.*&");
try {
// Look up the command and execute it.
getCommand(Command)->runCommand(*this, Arguments);
} catch (int RetVal) {
// The quit command exits the command loop by throwing an integer return
// code.
return RetVal;
} catch (const std::string &Error) {
std::cout << "Error: " << Error << "\n";
} catch (const char *Error) {
std::cout << "Error: " << Error << "\n";
} catch (const NonErrorException &E) {
std::cout << E.getMessage() << "\n";
} catch (...) {
std::cout << "ERROR: Debugger caught unexpected exception!\n";
// Attempt to continue.
}
// Write the prompt to get the next bit of user input
std::cout << Prompt;
}
return 0;
}
/// askYesNo - Ask the user a question, and demand a yes/no response. If
/// the user says yes, return true.
///
bool CLIDebugger::askYesNo(const std::string &Message) const {
std::string Answer;
std::cout << Message << " (y or n) " << std::flush;
while (getline(std::cin, Answer)) {
std::string Val = getToken(Answer);
if (getToken(Answer).empty()) {
if (Val == "yes" || Val == "y" || Val == "YES" || Val == "Y" ||
Val == "Yes")
return true;
if (Val == "no" || Val == "n" || Val == "NO" || Val == "N" ||
Val == "No")
return false;
}
std::cout << "Please answer y or n.\n" << Message << " (y or n) "
<< std::flush;
}
// Ran out of input?
return false;
}

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//===- CLIDebugger.h - LLVM Command Line Interface Debugger -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the CLIDebugger class, which implements a command line
// interface to the LLVM Debugger library.
//
//===----------------------------------------------------------------------===//
#ifndef CLIDEBUGGER_H
#define CLIDEBUGGER_H
#include "llvm/Debugger/Debugger.h"
#include <map>
namespace llvm {
class CLICommand;
class SourceFile;
class SourceLanguage;
class ProgramInfo;
class RuntimeInfo;
/// CLIDebugger - This class implements the command line interface for the
/// LLVM debugger.
class CLIDebugger {
/// Dbg - The low-level LLVM debugger object that we use to do our dirty
/// work.
Debugger Dbg;
/// CommandTable - This table contains a mapping from command names to the
/// CLICommand object that implements the command.
std::map<std::string, CLICommand*> CommandTable;
//===------------------------------------------------------------------===//
// Data related to the program that is currently loaded. Note that the Dbg
// variable also captures some information about the loaded program. This
// pointer is non-null iff Dbg.isProgramLoaded() is true.
//
ProgramInfo *TheProgramInfo;
//===------------------------------------------------------------------===//
// Data related to the program that is currently executing, but has stopped.
// Note that the Dbg variable also captures some information about the
// loaded program. This pointer is non-null iff Dbg.isProgramRunning() is
// true.
//
RuntimeInfo *TheRuntimeInfo;
/// LastCurrentFrame - This variable holds the Frame ID of the top-level
/// stack frame from the last time that the program was executed. We keep
/// this because we only want to print the source location when the current
/// function changes.
void *LastCurrentFrame;
//===------------------------------------------------------------------===//
// Data directly exposed through the debugger prompt
//
std::string Prompt; // set prompt, show prompt
unsigned ListSize; // set listsize, show listsize
//===------------------------------------------------------------------===//
// Data to support user interaction
//
/// CurrentFile - The current source file we are inspecting, or null if
/// none.
const SourceFile *CurrentFile;
unsigned LineListedStart, LineListedEnd;
/// CurrentLanguage - This contains the source language in use, if one is
/// explicitly set by the user. If this is null (the default), the language
/// is automatically determined from the current stack frame.
///
const SourceLanguage *CurrentLanguage;
public:
CLIDebugger();
/// getDebugger - Return the current LLVM debugger implementation being
/// used.
Debugger &getDebugger() { return Dbg; }
/// run - Start the debugger, returning when the user exits the debugger.
/// This starts the main event loop of the CLI debugger.
///
int run();
/// addCommand - Add a command to the CommandTable, potentially displacing a
/// preexisting command.
void addCommand(const std::string &Option, CLICommand *Cmd);
/// addSourceDirectory - Add a directory to search when looking for the
/// source code of the program.
void addSourceDirectory(const std::string &Dir) {
// FIXME: implement
}
/// getCurrentLanguage - Return the current source language that the user is
/// playing around with. This is aquired from the current stack frame of a
/// running program if one exists, but this value can be explicitly set by
/// the user as well.
const SourceLanguage &getCurrentLanguage() const;
/// getProgramInfo - Return a reference to the ProgramInfo object for the
/// currently loaded program. If there is no program loaded, throw an
/// exception.
ProgramInfo &getProgramInfo() const {
if (TheProgramInfo == 0)
throw "No program is loaded.";
return *TheProgramInfo;
}
/// getRuntimeInfo - Return a reference to the current RuntimeInfo object.
/// If there is no program running, throw an exception.
RuntimeInfo &getRuntimeInfo() const {
if (TheRuntimeInfo == 0)
throw "No program is running.";
return *TheRuntimeInfo;
}
private: // Internal implementation methods
/// getCommand - This looks up the specified command using a fuzzy match.
/// If the string exactly matches a command or is an unambiguous prefix of a
/// command, it returns the command. Otherwise it throws an exception
/// indicating the possible ambiguous choices.
CLICommand *getCommand(const std::string &Command);
/// askYesNo - Ask the user a question, and demand a yes/no response. If
/// the user says yes, return true.
bool askYesNo(const std::string &Message) const;
/// printProgramLocation - Given a loaded and created child process that has
/// stopped, print its current source location.
void printProgramLocation(bool PrintLocation = true);
/// eliminateRunInfo - We are about to run the program. Forget any state
/// about how the program used to be stopped.
void eliminateRunInfo();
/// programStoppedSuccessfully - This method updates internal data
/// structures to reflect the fact that the program just executed a while,
/// and has successfully stopped.
void programStoppedSuccessfully();
public: /// Builtin debugger commands, invokable by the user
// Program startup and shutdown options
void fileCommand(std::string &Options); // file
void createCommand(std::string &Options); // create
void killCommand(std::string &Options); // kill
void quitCommand(std::string &Options); // quit
// Program execution commands
void runCommand(std::string &Options); // run|r
void contCommand(std::string &Options); // cont|c|fg
void stepCommand(std::string &Options); // step|s [count]
void nextCommand(std::string &Options); // next|n [count]
void finishCommand(std::string &Options); // finish
// Stack frame commands
void backtraceCommand(std::string &Options); // backtrace|bt [count]
void upCommand(std::string &Options); // up
void downCommand(std::string &Options); // down
void frameCommand(std::string &Options); // frame
// Breakpoint related commands
void breakCommand(std::string &Options); // break|b <id>
// Miscellaneous commands
void infoCommand(std::string &Options); // info
void listCommand(std::string &Options); // list
void setCommand(std::string &Options); // set
void showCommand(std::string &Options); // show
void helpCommand(std::string &Options); // help
private:
/// startProgramRunning - If the program has been updated, reload it, then
/// start executing the program.
void startProgramRunning();
/// parseLineSpec - Parses a line specifier, for use by the 'list' command.
/// If SourceFile is returned as a void pointer, then it was not specified.
/// If the line specifier is invalid, an exception is thrown.
void parseLineSpec(std::string &LineSpec, const SourceFile *&SourceFile,
unsigned &LineNo);
/// printSourceLine - Print the specified line of the current source file.
/// If the specified line is invalid (the source file could not be loaded or
/// the line number is out of range), don't print anything, but return true.
bool printSourceLine(unsigned LineNo);
};
}
#endif

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//===-- Commands.cpp - Implement various commands for the CLI -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements many builtin user commands.
//
//===----------------------------------------------------------------------===//
#include "CLIDebugger.h"
#include "CLICommand.h"
#include "llvm/Debugger/ProgramInfo.h"
#include "llvm/Debugger/RuntimeInfo.h"
#include "llvm/Debugger/SourceLanguage.h"
#include "llvm/Debugger/SourceFile.h"
#include "llvm/Debugger/InferiorProcess.h"
#include "Support/FileUtilities.h"
#include "Support/StringExtras.h"
#include <iostream>
using namespace llvm;
/// getCurrentLanguage - Return the current source language that the user is
/// playing around with. This is aquired from the current stack frame of a
/// running program if one exists, but this value can be explicitly set by the
/// user as well.
const SourceLanguage &CLIDebugger::getCurrentLanguage() const {
// If the user explicitly switched languages with 'set language', use what
// they asked for.
if (CurrentLanguage) {
return *CurrentLanguage;
} else if (Dbg.isProgramRunning()) {
// Otherwise, if the program is running, infer the current language from it.
const GlobalVariable *FuncDesc =
getRuntimeInfo().getCurrentFrame().getFunctionDesc();
return getProgramInfo().getFunction(FuncDesc).getSourceFile().getLanguage();
} else {
// Otherwise, default to C like GDB apparently does.
return SourceLanguage::getCFamilyInstance();
}
}
/// startProgramRunning - If the program has been updated, reload it, then
/// start executing the program.
void CLIDebugger::startProgramRunning() {
eliminateRunInfo();
// If the program has been modified, reload it!
std::string Program = Dbg.getProgramPath();
if (TheProgramInfo->getProgramTimeStamp() != getFileTimestamp(Program)) {
std::cout << "'" << Program << "' has changed; re-reading program.\n";
// Unload an existing program. This kills the program if necessary.
Dbg.unloadProgram();
delete TheProgramInfo;
TheProgramInfo = 0;
CurrentFile = 0;
Dbg.loadProgram(Program);
TheProgramInfo = new ProgramInfo(Dbg.getProgram());
}
std::cout << "Starting program: " << Dbg.getProgramPath() << "\n";
Dbg.createProgram();
// There was no current frame.
LastCurrentFrame = 0;
}
/// printSourceLine - Print the specified line of the current source file.
/// If the specified line is invalid (the source file could not be loaded or
/// the line number is out of range), don't print anything, but return true.
bool CLIDebugger::printSourceLine(unsigned LineNo) {
assert(CurrentFile && "There is no current source file to print!");
const char *LineStart, *LineEnd;
CurrentFile->getSourceLine(LineNo-1, LineStart, LineEnd);
if (LineStart == 0) return true;
std::cout << LineNo;
// If this is the line the program is currently stopped at, print a marker.
if (Dbg.isProgramRunning()) {
unsigned CurLineNo, CurColNo;
const SourceFileInfo *CurSFI;
getRuntimeInfo().getCurrentFrame().getSourceLocation(CurLineNo, CurColNo,
CurSFI);
if (CurLineNo == LineNo && CurrentFile == &CurSFI->getSourceText())
std::cout << " ->";
}
std::cout << "\t" << std::string(LineStart, LineEnd) << "\n";
return false;
}
/// printProgramLocation - Print a line of the place where the current stack
/// frame has stopped and the source line it is on.
///
void CLIDebugger::printProgramLocation(bool PrintLocation) {
assert(Dbg.isProgramLoaded() && Dbg.isProgramRunning() &&
"Error program is not loaded and running!");
// Figure out where the program stopped...
StackFrame &SF = getRuntimeInfo().getCurrentFrame();
unsigned LineNo, ColNo;
const SourceFileInfo *FileDesc;
SF.getSourceLocation(LineNo, ColNo, FileDesc);
// If requested, print out some program information about WHERE we are.
if (PrintLocation) {
// FIXME: print the current function arguments
if (const GlobalVariable *FuncDesc = SF.getFunctionDesc())
std::cout << getProgramInfo().getFunction(FuncDesc).getSymbolicName();
else
std::cout << "<unknown function>";
CurrentFile = &FileDesc->getSourceText();
std::cout << " at " << CurrentFile->getFilename() << ":" << LineNo;
if (ColNo) std::cout << ":" << ColNo << "\n";
}
if (printSourceLine(LineNo))
std::cout << "<could not load source file>\n";
else {
LineListedStart = LineNo-ListSize/2+1;
if ((int)LineListedStart < 1) LineListedStart = 1;
LineListedEnd = LineListedStart+1;
}
}
/// eliminateRunInfo - We are about to run the program. Forget any state
/// about how the program used to be stopped.
void CLIDebugger::eliminateRunInfo() {
delete TheRuntimeInfo;
TheRuntimeInfo = 0;
}
/// programStoppedSuccessfully - This method updates internal data
/// structures to reflect the fact that the program just executed a while,
/// and has successfully stopped.
void CLIDebugger::programStoppedSuccessfully() {
assert(TheRuntimeInfo==0 && "Someone forgot to release the old RuntimeInfo!");
TheRuntimeInfo = new RuntimeInfo(TheProgramInfo, Dbg.getRunningProcess());
// FIXME: if there are any breakpoints at the current location, print them as
// well.
// Since the program as successfully stopped, print its location.
void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
printProgramLocation(CurrentFrame != LastCurrentFrame);
LastCurrentFrame = CurrentFrame;
}
/// getUnsignedIntegerOption - Get an unsigned integer number from the Val
/// string. Check to make sure that the string contains an unsigned integer
/// token, and if not, throw an exception. If isOnlyOption is set, also throw
/// an exception if there is extra junk at the end of the string.
static unsigned getUnsignedIntegerOption(const char *Msg, std::string &Val,
bool isOnlyOption = true) {
std::string Tok = getToken(Val);
if (Tok.empty() || (isOnlyOption && !getToken(Val).empty()))
throw std::string(Msg) + " expects an unsigned integer argument.";
char *EndPtr;
unsigned Result = strtoul(Tok.c_str(), &EndPtr, 0);
if (EndPtr != Tok.c_str()+Tok.size())
throw std::string(Msg) + " expects an unsigned integer argument.";
return Result;
}
/// getOptionalUnsignedIntegerOption - This method is just like
/// getUnsignedIntegerOption, but if the argument value is not specified, a
/// default is returned instead of causing an error.
static unsigned
getOptionalUnsignedIntegerOption(const char *Msg, unsigned Default,
std::string &Val, bool isOnlyOption = true) {
// Check to see if the value was specified...
std::string TokVal = getToken(Val);
if (TokVal.empty()) return Default;
// If it was specified, add it back to the value we are parsing...
Val = TokVal+Val;
// And parse normally.
return getUnsignedIntegerOption(Msg, Val, isOnlyOption);
}
//===----------------------------------------------------------------------===//
// Program startup and shutdown options
//===----------------------------------------------------------------------===//
/// file command - If the user specifies an option, search the PATH for the
/// specified program/bytecode file and load it. If the user does not specify
/// an option, unload the current program.
void CLIDebugger::fileCommand(std::string &Options) {
std::string Prog = getToken(Options);
if (!getToken(Options).empty())
throw "file command takes at most one argument.";
// Check to make sure the user knows what they are doing
if (Dbg.isProgramRunning() &&
!askYesNo("A program is already loaded. Kill it?"))
return;
// Unload an existing program. This kills the program if necessary.
eliminateRunInfo();
delete TheProgramInfo;
TheProgramInfo = 0;
Dbg.unloadProgram();
CurrentFile = 0;
// If requested, start the new program.
if (Prog.empty()) {
std::cout << "Unloaded program.\n";
} else {
std::cout << "Loading program... " << std::flush;
Dbg.loadProgram(Prog);
assert(Dbg.isProgramLoaded() &&
"loadProgram succeeded, but not program loaded!");
TheProgramInfo = new ProgramInfo(Dbg.getProgram());
std::cout << "success loading '" << Dbg.getProgramPath() << "'!\n";
}
}
void CLIDebugger::createCommand(std::string &Options) {
if (!getToken(Options).empty())
throw "create command does not take any arguments.";
if (!Dbg.isProgramLoaded()) throw "No program loaded.";
if (Dbg.isProgramRunning() &&
!askYesNo("The program is already running. Restart from the beginning?"))
return;
// Start the program running.
startProgramRunning();
// The program stopped!
programStoppedSuccessfully();
}
void CLIDebugger::killCommand(std::string &Options) {
if (!getToken(Options).empty())
throw "kill command does not take any arguments.";
if (!Dbg.isProgramRunning())
throw "No program is currently being run.";
if (askYesNo("Kill the program being debugged?"))
Dbg.killProgram();
eliminateRunInfo();
}
void CLIDebugger::quitCommand(std::string &Options) {
if (!getToken(Options).empty())
throw "quit command does not take any arguments.";
if (Dbg.isProgramRunning() &&
!askYesNo("The program is running. Exit anyway?"))
return;
// Throw exception to get out of the user-input loop.
throw 0;
}
//===----------------------------------------------------------------------===//
// Program execution commands
//===----------------------------------------------------------------------===//
void CLIDebugger::runCommand(std::string &Options) {
if (!getToken(Options).empty()) throw "run arguments not supported yet.";
if (!Dbg.isProgramLoaded()) throw "No program loaded.";
if (Dbg.isProgramRunning() &&
!askYesNo("The program is already running. Restart from the beginning?"))
return;
eliminateRunInfo();
// Start the program running.
startProgramRunning();
// Start the program running...
Options = "";
contCommand(Options);
}
void CLIDebugger::contCommand(std::string &Options) {
if (!getToken(Options).empty()) throw "cont argument not supported yet.";
if (!Dbg.isProgramRunning()) throw "Program is not running.";
eliminateRunInfo();
Dbg.contProgram();
// The program stopped!
programStoppedSuccessfully();
}
void CLIDebugger::stepCommand(std::string &Options) {
if (!Dbg.isProgramRunning()) throw "Program is not running.";
// Figure out how many times to step.
unsigned Amount =
getOptionalUnsignedIntegerOption("'step' command", 1, Options);
eliminateRunInfo();
// Step the specified number of times.
for (; Amount; --Amount)
Dbg.stepProgram();
// The program stopped!
programStoppedSuccessfully();
}
void CLIDebugger::nextCommand(std::string &Options) {
if (!Dbg.isProgramRunning()) throw "Program is not running.";
unsigned Amount =
getOptionalUnsignedIntegerOption("'next' command", 1, Options);
eliminateRunInfo();
for (; Amount; --Amount)
Dbg.nextProgram();
// The program stopped!
programStoppedSuccessfully();
}
void CLIDebugger::finishCommand(std::string &Options) {
if (!getToken(Options).empty())
throw "finish command does not take any arguments.";
if (!Dbg.isProgramRunning()) throw "Program is not running.";
// Figure out where we are exactly. If the user requests that we return from
// a frame that is not the top frame, make sure we get it.
void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
eliminateRunInfo();
Dbg.finishProgram(CurrentFrame);
// The program stopped!
programStoppedSuccessfully();
}
//===----------------------------------------------------------------------===//
// Stack frame commands
//===----------------------------------------------------------------------===//
void CLIDebugger::backtraceCommand(std::string &Options) {
// Accepts "full", n, -n
if (!getToken(Options).empty())
throw "FIXME: bt command argument not implemented yet!";
RuntimeInfo &RI = getRuntimeInfo();
ProgramInfo &PI = getProgramInfo();
try {
for (unsigned i = 0; ; ++i) {
StackFrame &SF = RI.getStackFrame(i);
std::cout << "#" << i;
if (i == RI.getCurrentFrameIdx())
std::cout << " ->";
std::cout << "\t" << SF.getFrameID() << " in ";
if (const GlobalVariable *G = SF.getFunctionDesc())
std::cout << PI.getFunction(G).getSymbolicName();
unsigned LineNo, ColNo;
const SourceFileInfo *SFI;
SF.getSourceLocation(LineNo, ColNo, SFI);
if (!SFI->getBaseName().empty()) {
std::cout << " at " << SFI->getBaseName();
if (LineNo) {
std::cout << ":" << LineNo;
if (ColNo)
std::cout << ":" << ColNo;
}
}
// FIXME: when we support shared libraries, we should print ' from foo.so'
// if the stack frame is from a different object than the current one.
std::cout << "\n";
}
} catch (...) {
// Stop automatically when we run off the bottom of the stack.
}
}
void CLIDebugger::upCommand(std::string &Options) {
unsigned Num =
getOptionalUnsignedIntegerOption("'up' command", 1, Options);
RuntimeInfo &RI = getRuntimeInfo();
unsigned CurFrame = RI.getCurrentFrameIdx();
// Check to see if we go can up the specified number of frames.
try {
RI.getStackFrame(CurFrame+Num);
} catch (...) {
if (Num == 1)
throw "Initial frame selected; you cannot go up.";
else
throw "Cannot go up " + utostr(Num) + " frames!";
}
RI.setCurrentFrameIdx(CurFrame+Num);
printProgramLocation();
}
void CLIDebugger::downCommand(std::string &Options) {
unsigned Num =
getOptionalUnsignedIntegerOption("'down' command", 1, Options);
RuntimeInfo &RI = getRuntimeInfo();
unsigned CurFrame = RI.getCurrentFrameIdx();
// Check to see if we can go up the specified number of frames.
if (CurFrame < Num)
if (Num == 1)
throw "Bottom (i.e., innermost) frame selected; you cannot go down.";
else
throw "Cannot go down " + utostr(Num) + " frames!";
RI.setCurrentFrameIdx(CurFrame-Num);
printProgramLocation();
}
void CLIDebugger::frameCommand(std::string &Options) {
RuntimeInfo &RI = getRuntimeInfo();
unsigned CurFrame = RI.getCurrentFrameIdx();
unsigned Num =
getOptionalUnsignedIntegerOption("'frame' command", CurFrame, Options);
// Check to see if we go to the specified frame.
RI.getStackFrame(Num);
RI.setCurrentFrameIdx(Num);
printProgramLocation();
}
//===----------------------------------------------------------------------===//
// Breakpoint related commands
//===----------------------------------------------------------------------===//
void CLIDebugger::breakCommand(std::string &Options) {
throw "breakpoints not implemented yet!";
}
//===----------------------------------------------------------------------===//
// Miscellaneous commands
//===----------------------------------------------------------------------===//
void CLIDebugger::infoCommand(std::string &Options) {
std::string What = getToken(Options);
if (What.empty() || !getToken(Options).empty())
throw "info command expects exactly one argument.";
if (What == "frame") {
} else if (What == "functions") {
const std::map<const GlobalVariable*, SourceFunctionInfo*> &Functions
= getProgramInfo().getSourceFunctions();
std::cout << "All defined functions:\n";
// FIXME: GDB groups these by source file. We could do that I guess.
for (std::map<const GlobalVariable*, SourceFunctionInfo*>::const_iterator
I = Functions.begin(), E = Functions.end(); I != E; ++I) {
std::cout << I->second->getSymbolicName() << "\n";
}
} else if (What == "source") {
if (CurrentFile == 0)
throw "No current source file.";
// Get the SourceFile information for the current file.
const SourceFileInfo &SF =
getProgramInfo().getSourceFile(CurrentFile->getDescriptor());
std::cout << "Current source file is: " << SF.getBaseName() << "\n"
<< "Compilation directory is: " << SF.getDirectory() << "\n";
if (unsigned NL = CurrentFile->getNumLines())
std::cout << "Located in: " << CurrentFile->getFilename() << "\n"
<< "Contains " << NL << " lines\n";
else
std::cout << "Could not find source file.\n";
std::cout << "Source language is "
<< SF.getLanguage().getSourceLanguageName() << "\n";
} else if (What == "sources") {
const std::map<const GlobalVariable*, SourceFileInfo*> &SourceFiles =
getProgramInfo().getSourceFiles();
std::cout << "Source files for the program:\n";
for (std::map<const GlobalVariable*, SourceFileInfo*>::const_iterator I =
SourceFiles.begin(), E = SourceFiles.end(); I != E;) {
std::cout << I->second->getDirectory() << "/"
<< I->second->getBaseName();
++I;
if (I != E) std::cout << ", ";
}
std::cout << "\n";
} else if (What == "target") {
std::cout << Dbg.getRunningProcess().getStatus();
} else {
// See if this is something handled by the current language.
if (getCurrentLanguage().printInfo(What))
return;
throw "Unknown info command '" + What + "'. Try 'help info'.";
}
}
/// parseLineSpec - Parses a line specifier, for use by the 'list' command.
/// If SourceFile is returned as a void pointer, then it was not specified.
/// If the line specifier is invalid, an exception is thrown.
void CLIDebugger::parseLineSpec(std::string &LineSpec,
const SourceFile *&SourceFile,
unsigned &LineNo) {
SourceFile = 0;
LineNo = 0;
// First, check to see if we have a : separator.
std::string FirstPart = getToken(LineSpec, ":");
std::string SecondPart = getToken(LineSpec, ":");
if (!getToken(LineSpec).empty()) throw "Malformed line specification!";
// If there is no second part, we must have either "function", "number",
// "+offset", or "-offset".
if (SecondPart.empty()) {
if (FirstPart.empty()) throw "Malformed line specification!";
if (FirstPart[0] == '+') {
FirstPart.erase(FirstPart.begin(), FirstPart.begin()+1);
// For +n, return LineListedEnd+n
LineNo = LineListedEnd +
getUnsignedIntegerOption("Line specifier '+'", FirstPart);
} else if (FirstPart[0] == '-') {
FirstPart.erase(FirstPart.begin(), FirstPart.begin()+1);
// For -n, return LineListedEnd-n
LineNo = LineListedEnd -
getUnsignedIntegerOption("Line specifier '-'", FirstPart);
if ((int)LineNo < 1) LineNo = 1;
} else if (FirstPart[0] == '*') {
throw "Address expressions not supported as source locations!";
} else {
// Ok, check to see if this is just a line number.
std::string Saved = FirstPart;
try {
LineNo = getUnsignedIntegerOption("", Saved);
} catch (...) {
// Ok, it's not a valid line number. It must be a source-language
// entity name.
std::string Name = getToken(FirstPart);
if (!getToken(FirstPart).empty())
throw "Extra junk in line specifier after '" + Name + "'.";
SourceFunctionInfo *SFI =
getCurrentLanguage().lookupFunction(Name, getProgramInfo(),
TheRuntimeInfo);
if (SFI == 0)
throw "Unknown identifier '" + Name + "'.";
unsigned L, C;
SFI->getSourceLocation(L, C);
if (L == 0) throw "Could not locate '" + Name + "'!";
LineNo = L;
SourceFile = &SFI->getSourceFile().getSourceText();
return;
}
}
} else {
// Ok, this must be a filename qualified line number or function name.
// First, figure out the source filename.
std::string SourceFilename = getToken(FirstPart);
if (!getToken(FirstPart).empty())
throw "Invalid filename qualified source location!";
// Next, check to see if this is just a line number.
std::string Saved = SecondPart;
try {
LineNo = getUnsignedIntegerOption("", Saved);
} catch (...) {
// Ok, it's not a valid line number. It must be a function name.
throw "FIXME: Filename qualified function names are not support "
"as line specifiers yet!";
}
// Ok, we got the line number. Now check out the source file name to make
// sure it's all good. If it is, return it. If not, throw exception.
SourceFile =&getProgramInfo().getSourceFile(SourceFilename).getSourceText();
}
}
void CLIDebugger::listCommand(std::string &Options) {
if (!Dbg.isProgramLoaded())
throw "No program is loaded. Use the 'file' command.";
// Handle "list foo," correctly, by returning " " as the second token
Options += " ";
std::string FirstLineSpec = getToken(Options, ",");
std::string SecondLineSpec = getToken(Options, ",");
if (!getToken(Options, ",").empty())
throw "list command only expects two source location specifiers!";
// StartLine, EndLine - The starting and ending line numbers to print.
unsigned StartLine = 0, EndLine = 0;
if (SecondLineSpec.empty()) { // No second line specifier provided?
// Handle special forms like "", "+", "-", etc.
std::string TmpSpec = FirstLineSpec;
std::string Tok = getToken(TmpSpec);
if (getToken(TmpSpec).empty() && (Tok == "" || Tok == "+" || Tok == "-")) {
if (Tok == "+" || Tok == "") {
StartLine = LineListedEnd;
EndLine = StartLine + ListSize;
} else {
assert(Tok == "-");
StartLine = LineListedStart-ListSize;
EndLine = LineListedStart;
if ((int)StartLine < 0) StartLine = 1;
}
} else {
// Must be a normal line specifier.
const SourceFile *File;
unsigned LineNo;
parseLineSpec(FirstLineSpec, File, LineNo);
// If the user only specified one file specifier, we should display
// ListSize lines centered at the specified line.
if (File != 0) CurrentFile = File;
StartLine = LineNo - (ListSize+1)/2;
if ((int)StartLine < 0) StartLine = 1;
EndLine = StartLine + ListSize;
}
} else {
// Parse two line specifiers...
const SourceFile *StartFile, *EndFile;
unsigned StartLineNo, EndLineNo;
parseLineSpec(FirstLineSpec, StartFile, StartLineNo);
unsigned SavedLLE = LineListedEnd;
LineListedEnd = StartLineNo;
try {
parseLineSpec(SecondLineSpec, EndFile, EndLineNo);
} catch (...) {
LineListedEnd = SavedLLE;
throw;
}
// Inherit file specified by the first line spec if there was one.
if (EndFile == 0) EndFile = StartFile;
if (StartFile != EndFile)
throw "Start and end line specifiers are in different files!";
CurrentFile = StartFile;
StartLine = StartLineNo;
EndLine = EndLineNo+1;
}
assert((int)StartLine > 0 && (int)EndLine > 0 && StartLine <= EndLine &&
"Error reading line specifiers!");
// If there was no current file, and the user didn't specify one to list, we
// have an error.
if (CurrentFile == 0)
throw "There is no current file to list.";
// Remember for next time.
LineListedStart = StartLine;
LineListedEnd = StartLine;
for (unsigned LineNo = StartLine; LineNo != EndLine; ++LineNo) {
// Print the source line, unless it is invalid.
if (printSourceLine(LineNo))
break;
LineListedEnd = LineNo+1;
}
// If we didn't print any lines, find out why.
if (LineListedEnd == StartLine) {
// See if we can read line #0 from the file, if not, we couldn't load the
// file.
const char *LineStart, *LineEnd;
CurrentFile->getSourceLine(0, LineStart, LineEnd);
if (LineStart == 0)
throw "Could not load source file '" + CurrentFile->getFilename() + "'!";
else
std::cout << "<end of file>\n";
}
}
void CLIDebugger::setCommand(std::string &Options) {
std::string What = getToken(Options);
if (What.empty())
throw "set command expects at least two arguments.";
if (What == "language") {
std::string Lang = getToken(Options);
if (!getToken(Options).empty())
throw "set language expects one argument at most.";
if (Lang == "") {
std::cout << "The currently understood settings are:\n\n"
<< "local or auto Automatic setting based on source file\n"
<< "c Use the C language\n"
<< "c++ Use the C++ language\n"
<< "unknown Use when source language is not supported\n";
} else if (Lang == "local" || Lang == "auto") {
CurrentLanguage = 0;
} else if (Lang == "c") {
CurrentLanguage = &SourceLanguage::getCFamilyInstance();
} else if (Lang == "c++") {
CurrentLanguage = &SourceLanguage::getCPlusPlusInstance();
} else if (Lang == "unknown") {
CurrentLanguage = &SourceLanguage::getUnknownLanguageInstance();
} else {
throw "Unknown language '" + Lang + "'.";
}
} else if (What == "listsize") {
ListSize = getUnsignedIntegerOption("'set prompt' command", Options);
} else if (What == "prompt") {
// Include any trailing whitespace or other tokens, but not leading
// whitespace.
Prompt = getToken(Options); // Strip leading whitespace
Prompt += Options; // Keep trailing whitespace or other stuff
} else {
// FIXME: Try to parse this as a source-language program expression.
throw "Don't know how to set '" + What + "'!";
}
}
void CLIDebugger::showCommand(std::string &Options) {
std::string What = getToken(Options);
if (What.empty() || !getToken(Options).empty())
throw "show command expects one argument.";
if (What == "language") {
std::cout << "The current source language is '";
if (CurrentLanguage)
std::cout << CurrentLanguage->getSourceLanguageName();
else
std::cout << "auto; currently "
<< getCurrentLanguage().getSourceLanguageName();
std::cout << "'.\n";
} else if (What == "listsize") {
std::cout << "Number of source lines llvm-db will list by default is "
<< ListSize << ".\n";
} else if (What == "prompt") {
std::cout << "llvm-db's prompt is \"" << Prompt << "\".\n";
} else {
throw "Unknown show command '" + What + "'. Try 'help show'.";
}
}
void CLIDebugger::helpCommand(std::string &Options) {
// Print out all of the commands in the CommandTable
std::string Command = getToken(Options);
if (!getToken(Options).empty())
throw "help command takes at most one argument.";
// Getting detailed help on a particular command?
if (!Command.empty()) {
CLICommand *C = getCommand(Command);
std::cout << C->getShortHelp() << ".\n" << C->getLongHelp();
// If there are aliases for this option, print them out.
const std::vector<std::string> &Names = C->getOptionNames();
if (Names.size() > 1) {
std::cout << "The '" << Command << "' command is known as: '"
<< Names[0] << "'";
for (unsigned i = 1, e = Names.size(); i != e; ++i)
std::cout << ", '" << Names[i] << "'";
std::cout << "\n";
}
} else {
unsigned MaxSize = 0;
for (std::map<std::string, CLICommand*>::iterator I = CommandTable.begin(),
E = CommandTable.end(); I != E; ++I)
if (I->first.size() > MaxSize &&
I->first == I->second->getPrimaryOptionName())
MaxSize = I->first.size();
// Loop over all of the commands, printing the short help version
for (std::map<std::string, CLICommand*>::iterator I = CommandTable.begin(),
E = CommandTable.end(); I != E; ++I)
if (I->first == I->second->getPrimaryOptionName())
std::cout << I->first << std::string(MaxSize - I->first.size(), ' ')
<< " - " << I->second->getShortHelp() << "\n";
}
}

60
tools/llvm-db/Makefile Normal file
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##===- tools/llvm-db/Makefile ------------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../..
TOOLNAME = llvm-db
# Get the $(ARCH) setting
include $(LEVEL)/Makefile.config
# Generic JIT libraries
JITLIBS = lli-jit codegen executionengine
ARCHLIBS =
# You can enable the X86 JIT on a non-X86 host by setting the flag
# ENABLE_X86_JIT on the make command line. If not, it will still be
# enabled automagically on an X86 host.
ifeq ($(ARCH), x86)
ENABLE_X86_JIT = 1
endif
# What the X86 JIT requires
ifdef ENABLE_X86_JIT
CPPFLAGS += -DENABLE_X86_JIT
JITLIBS += x86 selectiondag
# X86 doesn't require any ARCHLIBS
endif
# You can enable the Sparc JIT on a non-Sparc host by setting the flag
# ENABLE_SPARC_JIT on the make command line. If not, it will still be
# enabled automagically on an Sparc host.
ifeq ($(ARCH), Sparc)
ENABLE_SPARC_JIT = 1
endif
# What the Sparc JIT requires
ifdef ENABLE_SPARC_JIT
CPPFLAGS += -DENABLE_SPARC_JIT
JITLIBS += sparc
ARCHLIBS += sched livevar instrument.a profpaths \
bcwriter transforms.a ipo.a ipa.a datastructure.a regalloc \
select
endif
USEDLIBS = lli-interpreter $(JITLIBS) $(ARCHLIBS) scalaropts analysis.a \
transformutils.a debugger bcreader vmcore support target.a
# Have gcc tell the linker to export symbols from the program so that
# dynamically loaded modules can be linked against them.
#
TOOLLINKOPTS = $(PLATFORMLIBDL)
include $(LEVEL)/Makefile.common

88
tools/llvm-db/llvm-db.cpp Normal file
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//===- llvm-db.cpp - LLVM Debugger ----------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This utility implements a simple text-mode front-end to the LLVM debugger
// library.
//
//===----------------------------------------------------------------------===//
#include "CLIDebugger.h"
#include "Support/CommandLine.h"
#include <iostream>
using namespace llvm;
namespace {
// Command line options for specifying the program to debug and options to use
cl::opt<std::string>
InputFile(cl::desc("<program>"), cl::Positional, cl::init(""));
cl::list<std::string>
InputArgs("args", cl::Positional, cl::desc("<program and arguments>"),
cl::ZeroOrMore);
// Command line options to control various directory related stuff
cl::list<std::string>
SourceDirectories("directory", cl::value_desc("directory"),
cl::desc("Add directory to the search for source files"));
cl::alias SDA("d", cl::desc("Alias for --directory"),
cl::aliasopt(SourceDirectories));
cl::opt<std::string>
WorkingDirectory("cd", cl::desc("Use directory as current working directory"),
cl::value_desc("directory"));
// Command line options specific to the llvm-db debugger driver
cl::opt<bool> Version("version", cl::desc("Print version number and quit"));
cl::opt<bool> Quiet("quiet", cl::desc("Do not print introductory messages"));
cl::alias QA1("silent", cl::desc("Alias for -quiet"), cl::aliasopt(Quiet));
cl::alias QA2("q", cl::desc("Alias for -quiet"), cl::aliasopt(Quiet));
}
//===----------------------------------------------------------------------===//
// main Driver function
//
int main(int argc, char **argv, char * const *envp) {
cl::ParseCommandLineOptions(argc, argv,
" llvm source-level debugger\n");
if (Version || !Quiet) {
std::cout << "llvm-db: The LLVM source-level debugger\n";
if (Version) return 1;
}
// Merge Inputfile and InputArgs into the InputArgs list...
if (!InputFile.empty() && InputArgs.empty())
InputArgs.push_back(InputFile);
// Create the CLI debugger...
CLIDebugger D;
// Initialize the debugger with the command line options we read...
Debugger &Dbg = D.getDebugger();
// Initialize the debugger environment.
Dbg.initializeEnvironment(envp);
Dbg.setWorkingDirectory(WorkingDirectory);
for (unsigned i = 0, e = SourceDirectories.size(); i != e; ++i)
D.addSourceDirectory(SourceDirectories[i]);
if (!InputArgs.empty()) {
try {
D.fileCommand(InputArgs[0]);
} catch (const std::string &Error) {
std::cout << "Error: " << Error << "\n";
}
Dbg.setProgramArguments(InputArgs.begin()+1, InputArgs.end());
}
// Now that we have initialized the debugger, run it.
return D.run();
}