+++ /dev/null
-//===-- Commands.cpp - Implement various commands for the CLI -------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file 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 "llvm/Support/FileUtilities.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/StringExtras.h"
-#include <cstdlib>
-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!
- sys::PathWithStatus Program(Dbg.getProgramPath());
- std::string Err;
- const sys::FileStatus *Status = Program.getFileStatus(false, &Err);
- if (!Status)
- throw Err;
- if (TheProgramInfo->getProgramTimeStamp() != Status->getTimestamp()) {
- outs() << "'" << Program.str() << "' 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.str(), Context);
- TheProgramInfo = new ProgramInfo(Dbg.getProgram());
- }
-
- outs() << "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;
- outs() << 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())
- outs() << " ->";
- }
-
- outs() << "\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())
- outs() << getProgramInfo().getFunction(FuncDesc).getSymbolicName();
- else
- outs() << "<unknown function>";
-
- CurrentFile = &FileDesc->getSourceText();
-
- outs() << " at " << CurrentFile->getFilename() << ":" << LineNo;
- if (ColNo) outs() << ":" << ColNo;
- outs() << "\n";
- }
-
- if (printSourceLine(LineNo))
- outs() << "<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);
-}
-
-
-/// parseProgramOptions - This method parses the Options string and loads it
-/// as options to be passed to the program. This is used by the run command
-/// and by 'set args'.
-void CLIDebugger::parseProgramOptions(std::string &Options) {
- // FIXME: tokenizing by whitespace is clearly incorrect. Instead we should
- // honor quotes and other things that a shell would. Also in the future we
- // should support redirection of standard IO.
-
- std::vector<std::string> Arguments;
- for (std::string A = getToken(Options); !A.empty(); A = getToken(Options))
- Arguments.push_back(A);
- Dbg.setProgramArguments(Arguments.begin(), Arguments.end());
-}
-
-
-//===----------------------------------------------------------------------===//
-// Program startup and shutdown options
-//===----------------------------------------------------------------------===//
-
-
-/// file command - If the user specifies an option, search the PATH for the
-/// specified program/bitcode 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()) {
- outs() << "Unloaded program.\n";
- } else {
- outs() << "Loading program... ";
- outs().flush();
- Dbg.loadProgram(Prog, Context);
- assert(Dbg.isProgramLoaded() &&
- "loadProgram succeeded, but not program loaded!");
- TheProgramInfo = new ProgramInfo(Dbg.getProgram());
- outs() << "successfully loaded '" << 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 (!Dbg.isProgramLoaded()) throw "No program loaded.";
- if (Dbg.isProgramRunning() &&
- !askYesNo("The program is already running. Restart from the beginning?"))
- return;
-
- // Parse all of the options to the run command, which specify program
- // arguments to run with.
- parseProgramOptions(Options);
-
- 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);
- outs() << "#" << i;
- if (i == RI.getCurrentFrameIdx())
- outs() << " ->";
- outs() << "\t" << SF.getFrameID() << " in ";
- if (const GlobalVariable *G = SF.getFunctionDesc())
- outs() << PI.getFunction(G).getSymbolicName();
-
- unsigned LineNo, ColNo;
- const SourceFileInfo *SFI;
- SF.getSourceLocation(LineNo, ColNo, SFI);
- if (!SFI->getBaseName().empty()) {
- outs() << " at " << SFI->getBaseName();
- if (LineNo) {
- outs() << ":" << LineNo;
- if (ColNo)
- outs() << ":" << 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.
-
- outs() << "\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) {
- // Figure out where the user wants a breakpoint.
- const SourceFile *File;
- unsigned LineNo;
-
- // Check to see if the user specified a line specifier.
- std::string Option = getToken(Options); // strip whitespace
- if (!Option.empty()) {
- Options = Option + Options; // reconstruct string
-
- // Parse the line specifier.
- parseLineSpec(Options, File, LineNo);
- } else {
- // Build a line specifier for the current stack frame.
- throw "FIXME: breaking at the current location is not implemented yet!";
- }
-
- if (!File) File = CurrentFile;
- if (File == 0)
- throw "Unknown file to place breakpoint!";
-
- errs() << "Break: " << File->getFilename() << ":" << LineNo << "\n";
-
- throw "breakpoints not implemented yet!";
-}
-
-//===----------------------------------------------------------------------===//
-// Miscellaneous commands
-//===----------------------------------------------------------------------===//
-
-void CLIDebugger::infoCommand(std::string &Options) {
- std::string What = getToken(Options);
-
- if (What.empty() || !getToken(Options).empty()){
- std::string infoStr("info");
- helpCommand(infoStr);
- return;
- }
-
- if (What == "frame") {
- } else if (What == "functions") {
- const std::map<const GlobalVariable*, SourceFunctionInfo*> &Functions
- = getProgramInfo().getSourceFunctions();
- outs() << "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) {
- outs() << 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());
-
- outs() << "Current source file is: " << SF.getBaseName() << "\n"
- << "Compilation directory is: " << SF.getDirectory() << "\n";
- if (unsigned NL = CurrentFile->getNumLines())
- outs() << "Located in: " << CurrentFile->getFilename() << "\n"
- << "Contains " << NL << " lines\n";
- else
- outs() << "Could not find source file.\n";
- outs() << "Source language is "
- << SF.getLanguage().getSourceLanguageName() << "\n";
-
- } else if (What == "sources") {
- const std::map<const GlobalVariable*, SourceFileInfo*> &SourceFiles =
- getProgramInfo().getSourceFiles();
- outs() << "Source files for the program:\n";
- for (std::map<const GlobalVariable*, SourceFileInfo*>::const_iterator I =
- SourceFiles.begin(), E = SourceFiles.end(); I != E;) {
- outs() << I->second->getDirectory() << "/"
- << I->second->getBaseName();
- ++I;
- if (I != E) outs() << ", ";
- }
- outs() << "\n";
- } else if (What == "target") {
- outs() << 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
- outs() << "<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 == "args") {
- parseProgramOptions(Options);
- } else if (What == "language") {
- std::string Lang = getToken(Options);
- if (!getToken(Options).empty())
- throw "set language expects one argument at most.";
- if (Lang == "") {
- outs() << "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 == "args") {
- outs() << "Argument list to give program when started is \"";
- // FIXME: This doesn't print stuff correctly if the arguments have spaces in
- // them, but currently the only way to get that is to use the --args command
- // line argument. This should really handle escaping all hard characters as
- // needed.
- for (unsigned i = 0, e = Dbg.getNumProgramArguments(); i != e; ++i)
- outs() << (i ? " " : "") << Dbg.getProgramArgument(i);
- outs() << "\"\n";
-
- } else if (What == "language") {
- outs() << "The current source language is '";
- if (CurrentLanguage)
- outs() << CurrentLanguage->getSourceLanguageName();
- else
- outs() << "auto; currently "
- << getCurrentLanguage().getSourceLanguageName();
- outs() << "'.\n";
- } else if (What == "listsize") {
- outs() << "Number of source lines llvm-db will list by default is "
- << ListSize << ".\n";
- } else if (What == "prompt") {
- outs() << "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);
- outs() << 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) {
- outs() << "The '" << Command << "' command is known as: '"
- << Names[0] << "'";
- for (unsigned i = 1, e = Names.size(); i != e; ++i)
- outs() << ", '" << Names[i] << "'";
- outs() << "\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())
- outs() << I->first << std::string(MaxSize - I->first.size(), ' ')
- << " - " << I->second->getShortHelp() << "\n";
- }
-}
projects / oota-llvm.git / blobdiff