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a27694d7aa
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47372 91177308-0d34-0410-b5e6-96231b3b80d8
866 lines
30 KiB
C++
866 lines
30 KiB
C++
//===-- Commands.cpp - Implement various commands for the CLI -------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements many builtin user commands.
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//
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//===----------------------------------------------------------------------===//
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#include "CLIDebugger.h"
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#include "CLICommand.h"
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#include "llvm/Debugger/ProgramInfo.h"
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#include "llvm/Debugger/RuntimeInfo.h"
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#include "llvm/Debugger/SourceLanguage.h"
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#include "llvm/Debugger/SourceFile.h"
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#include "llvm/Debugger/InferiorProcess.h"
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#include "llvm/Support/FileUtilities.h"
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#include "llvm/ADT/StringExtras.h"
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#include <iostream>
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#include <cstdlib>
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using namespace llvm;
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/// getCurrentLanguage - Return the current source language that the user is
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/// playing around with. This is aquired from the current stack frame of a
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/// running program if one exists, but this value can be explicitly set by the
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/// user as well.
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const SourceLanguage &CLIDebugger::getCurrentLanguage() const {
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// If the user explicitly switched languages with 'set language', use what
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// they asked for.
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if (CurrentLanguage) {
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return *CurrentLanguage;
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} else if (Dbg.isProgramRunning()) {
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// Otherwise, if the program is running, infer the current language from it.
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const GlobalVariable *FuncDesc =
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getRuntimeInfo().getCurrentFrame().getFunctionDesc();
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return getProgramInfo().getFunction(FuncDesc).getSourceFile().getLanguage();
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} else {
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// Otherwise, default to C like GDB apparently does.
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return SourceLanguage::getCFamilyInstance();
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}
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}
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/// startProgramRunning - If the program has been updated, reload it, then
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/// start executing the program.
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void CLIDebugger::startProgramRunning() {
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eliminateRunInfo();
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// If the program has been modified, reload it!
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sys::PathWithStatus Program(Dbg.getProgramPath());
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std::string Err;
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const sys::FileStatus *Status = Program.getFileStatus(false, &Err);
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if (!Status)
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throw Err;
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if (TheProgramInfo->getProgramTimeStamp() != Status->getTimestamp()) {
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std::cout << "'" << Program << "' has changed; re-reading program.\n";
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// Unload an existing program. This kills the program if necessary.
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Dbg.unloadProgram();
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delete TheProgramInfo;
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TheProgramInfo = 0;
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CurrentFile = 0;
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Dbg.loadProgram(Program.toString());
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TheProgramInfo = new ProgramInfo(Dbg.getProgram());
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}
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std::cout << "Starting program: " << Dbg.getProgramPath() << "\n";
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Dbg.createProgram();
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// There was no current frame.
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LastCurrentFrame = 0;
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}
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/// printSourceLine - Print the specified line of the current source file.
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/// If the specified line is invalid (the source file could not be loaded or
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/// the line number is out of range), don't print anything, but return true.
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bool CLIDebugger::printSourceLine(unsigned LineNo) {
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assert(CurrentFile && "There is no current source file to print!");
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const char *LineStart, *LineEnd;
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CurrentFile->getSourceLine(LineNo-1, LineStart, LineEnd);
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if (LineStart == 0) return true;
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std::cout << LineNo;
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// If this is the line the program is currently stopped at, print a marker.
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if (Dbg.isProgramRunning()) {
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unsigned CurLineNo, CurColNo;
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const SourceFileInfo *CurSFI;
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getRuntimeInfo().getCurrentFrame().getSourceLocation(CurLineNo, CurColNo,
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CurSFI);
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if (CurLineNo == LineNo && CurrentFile == &CurSFI->getSourceText())
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std::cout << " ->";
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}
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std::cout << "\t" << std::string(LineStart, LineEnd) << "\n";
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return false;
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}
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/// printProgramLocation - Print a line of the place where the current stack
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/// frame has stopped and the source line it is on.
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///
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void CLIDebugger::printProgramLocation(bool PrintLocation) {
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assert(Dbg.isProgramLoaded() && Dbg.isProgramRunning() &&
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"Error program is not loaded and running!");
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// Figure out where the program stopped...
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StackFrame &SF = getRuntimeInfo().getCurrentFrame();
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unsigned LineNo, ColNo;
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const SourceFileInfo *FileDesc;
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SF.getSourceLocation(LineNo, ColNo, FileDesc);
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// If requested, print out some program information about WHERE we are.
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if (PrintLocation) {
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// FIXME: print the current function arguments
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if (const GlobalVariable *FuncDesc = SF.getFunctionDesc())
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std::cout << getProgramInfo().getFunction(FuncDesc).getSymbolicName();
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else
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std::cout << "<unknown function>";
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CurrentFile = &FileDesc->getSourceText();
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std::cout << " at " << CurrentFile->getFilename() << ":" << LineNo;
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if (ColNo) std::cout << ":" << ColNo;
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std::cout << "\n";
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}
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if (printSourceLine(LineNo))
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std::cout << "<could not load source file>\n";
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else {
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LineListedStart = LineNo-ListSize/2+1;
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if ((int)LineListedStart < 1) LineListedStart = 1;
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LineListedEnd = LineListedStart+1;
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}
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}
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/// eliminateRunInfo - We are about to run the program. Forget any state
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/// about how the program used to be stopped.
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void CLIDebugger::eliminateRunInfo() {
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delete TheRuntimeInfo;
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TheRuntimeInfo = 0;
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}
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/// programStoppedSuccessfully - This method updates internal data
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/// structures to reflect the fact that the program just executed a while,
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/// and has successfully stopped.
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void CLIDebugger::programStoppedSuccessfully() {
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assert(TheRuntimeInfo==0 && "Someone forgot to release the old RuntimeInfo!");
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TheRuntimeInfo = new RuntimeInfo(TheProgramInfo, Dbg.getRunningProcess());
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// FIXME: if there are any breakpoints at the current location, print them as
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// well.
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// Since the program as successfully stopped, print its location.
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void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
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printProgramLocation(CurrentFrame != LastCurrentFrame);
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LastCurrentFrame = CurrentFrame;
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}
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/// getUnsignedIntegerOption - Get an unsigned integer number from the Val
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/// string. Check to make sure that the string contains an unsigned integer
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/// token, and if not, throw an exception. If isOnlyOption is set, also throw
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/// an exception if there is extra junk at the end of the string.
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static unsigned getUnsignedIntegerOption(const char *Msg, std::string &Val,
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bool isOnlyOption = true) {
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std::string Tok = getToken(Val);
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if (Tok.empty() || (isOnlyOption && !getToken(Val).empty()))
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throw std::string(Msg) + " expects an unsigned integer argument.";
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char *EndPtr;
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unsigned Result = strtoul(Tok.c_str(), &EndPtr, 0);
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if (EndPtr != Tok.c_str()+Tok.size())
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throw std::string(Msg) + " expects an unsigned integer argument.";
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return Result;
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}
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/// getOptionalUnsignedIntegerOption - This method is just like
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/// getUnsignedIntegerOption, but if the argument value is not specified, a
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/// default is returned instead of causing an error.
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static unsigned
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getOptionalUnsignedIntegerOption(const char *Msg, unsigned Default,
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std::string &Val, bool isOnlyOption = true) {
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// Check to see if the value was specified...
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std::string TokVal = getToken(Val);
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if (TokVal.empty()) return Default;
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// If it was specified, add it back to the value we are parsing...
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Val = TokVal+Val;
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// And parse normally.
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return getUnsignedIntegerOption(Msg, Val, isOnlyOption);
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}
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/// parseProgramOptions - This method parses the Options string and loads it
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/// as options to be passed to the program. This is used by the run command
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/// and by 'set args'.
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void CLIDebugger::parseProgramOptions(std::string &Options) {
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// FIXME: tokenizing by whitespace is clearly incorrect. Instead we should
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// honor quotes and other things that a shell would. Also in the future we
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// should support redirection of standard IO.
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std::vector<std::string> Arguments;
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for (std::string A = getToken(Options); !A.empty(); A = getToken(Options))
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Arguments.push_back(A);
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Dbg.setProgramArguments(Arguments.begin(), Arguments.end());
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}
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//===----------------------------------------------------------------------===//
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// Program startup and shutdown options
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//===----------------------------------------------------------------------===//
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/// file command - If the user specifies an option, search the PATH for the
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/// specified program/bitcode file and load it. If the user does not specify
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/// an option, unload the current program.
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void CLIDebugger::fileCommand(std::string &Options) {
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std::string Prog = getToken(Options);
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if (!getToken(Options).empty())
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throw "file command takes at most one argument.";
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// Check to make sure the user knows what they are doing
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if (Dbg.isProgramRunning() &&
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!askYesNo("A program is already loaded. Kill it?"))
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return;
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// Unload an existing program. This kills the program if necessary.
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eliminateRunInfo();
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delete TheProgramInfo;
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TheProgramInfo = 0;
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Dbg.unloadProgram();
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CurrentFile = 0;
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// If requested, start the new program.
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if (Prog.empty()) {
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std::cout << "Unloaded program.\n";
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} else {
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std::cout << "Loading program... " << std::flush;
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Dbg.loadProgram(Prog);
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assert(Dbg.isProgramLoaded() &&
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"loadProgram succeeded, but not program loaded!");
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TheProgramInfo = new ProgramInfo(Dbg.getProgram());
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std::cout << "successfully loaded '" << Dbg.getProgramPath() << "'!\n";
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}
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}
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void CLIDebugger::createCommand(std::string &Options) {
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if (!getToken(Options).empty())
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throw "create command does not take any arguments.";
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if (!Dbg.isProgramLoaded()) throw "No program loaded.";
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if (Dbg.isProgramRunning() &&
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!askYesNo("The program is already running. Restart from the beginning?"))
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return;
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// Start the program running.
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startProgramRunning();
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// The program stopped!
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programStoppedSuccessfully();
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}
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void CLIDebugger::killCommand(std::string &Options) {
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if (!getToken(Options).empty())
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throw "kill command does not take any arguments.";
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if (!Dbg.isProgramRunning())
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throw "No program is currently being run.";
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if (askYesNo("Kill the program being debugged?"))
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Dbg.killProgram();
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eliminateRunInfo();
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}
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void CLIDebugger::quitCommand(std::string &Options) {
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if (!getToken(Options).empty())
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throw "quit command does not take any arguments.";
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if (Dbg.isProgramRunning() &&
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!askYesNo("The program is running. Exit anyway?"))
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return;
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// Throw exception to get out of the user-input loop.
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throw 0;
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}
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//===----------------------------------------------------------------------===//
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// Program execution commands
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//===----------------------------------------------------------------------===//
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void CLIDebugger::runCommand(std::string &Options) {
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if (!Dbg.isProgramLoaded()) throw "No program loaded.";
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if (Dbg.isProgramRunning() &&
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!askYesNo("The program is already running. Restart from the beginning?"))
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return;
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// Parse all of the options to the run command, which specify program
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// arguments to run with.
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parseProgramOptions(Options);
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eliminateRunInfo();
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// Start the program running.
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startProgramRunning();
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// Start the program running...
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Options = "";
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contCommand(Options);
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}
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void CLIDebugger::contCommand(std::string &Options) {
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if (!getToken(Options).empty()) throw "cont argument not supported yet.";
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if (!Dbg.isProgramRunning()) throw "Program is not running.";
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eliminateRunInfo();
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Dbg.contProgram();
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// The program stopped!
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programStoppedSuccessfully();
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}
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void CLIDebugger::stepCommand(std::string &Options) {
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if (!Dbg.isProgramRunning()) throw "Program is not running.";
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// Figure out how many times to step.
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unsigned Amount =
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getOptionalUnsignedIntegerOption("'step' command", 1, Options);
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eliminateRunInfo();
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// Step the specified number of times.
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for (; Amount; --Amount)
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Dbg.stepProgram();
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// The program stopped!
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programStoppedSuccessfully();
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}
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void CLIDebugger::nextCommand(std::string &Options) {
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if (!Dbg.isProgramRunning()) throw "Program is not running.";
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unsigned Amount =
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getOptionalUnsignedIntegerOption("'next' command", 1, Options);
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eliminateRunInfo();
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for (; Amount; --Amount)
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Dbg.nextProgram();
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// The program stopped!
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programStoppedSuccessfully();
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}
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void CLIDebugger::finishCommand(std::string &Options) {
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if (!getToken(Options).empty())
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throw "finish command does not take any arguments.";
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if (!Dbg.isProgramRunning()) throw "Program is not running.";
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// Figure out where we are exactly. If the user requests that we return from
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// a frame that is not the top frame, make sure we get it.
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void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
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eliminateRunInfo();
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Dbg.finishProgram(CurrentFrame);
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// The program stopped!
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programStoppedSuccessfully();
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}
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//===----------------------------------------------------------------------===//
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// Stack frame commands
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//===----------------------------------------------------------------------===//
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void CLIDebugger::backtraceCommand(std::string &Options) {
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// Accepts "full", n, -n
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if (!getToken(Options).empty())
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throw "FIXME: bt command argument not implemented yet!";
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RuntimeInfo &RI = getRuntimeInfo();
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ProgramInfo &PI = getProgramInfo();
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try {
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for (unsigned i = 0; ; ++i) {
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StackFrame &SF = RI.getStackFrame(i);
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std::cout << "#" << i;
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if (i == RI.getCurrentFrameIdx())
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std::cout << " ->";
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std::cout << "\t" << SF.getFrameID() << " in ";
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if (const GlobalVariable *G = SF.getFunctionDesc())
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std::cout << PI.getFunction(G).getSymbolicName();
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unsigned LineNo, ColNo;
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const SourceFileInfo *SFI;
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SF.getSourceLocation(LineNo, ColNo, SFI);
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if (!SFI->getBaseName().empty()) {
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std::cout << " at " << SFI->getBaseName();
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if (LineNo) {
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std::cout << ":" << LineNo;
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if (ColNo)
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std::cout << ":" << ColNo;
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}
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}
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// FIXME: when we support shared libraries, we should print ' from foo.so'
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// if the stack frame is from a different object than the current one.
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std::cout << "\n";
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}
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} catch (...) {
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// Stop automatically when we run off the bottom of the stack.
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}
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}
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void CLIDebugger::upCommand(std::string &Options) {
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unsigned Num =
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getOptionalUnsignedIntegerOption("'up' command", 1, Options);
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RuntimeInfo &RI = getRuntimeInfo();
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unsigned CurFrame = RI.getCurrentFrameIdx();
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// Check to see if we go can up the specified number of frames.
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try {
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RI.getStackFrame(CurFrame+Num);
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} catch (...) {
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if (Num == 1)
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throw "Initial frame selected; you cannot go up.";
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else
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throw "Cannot go up " + utostr(Num) + " frames!";
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}
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RI.setCurrentFrameIdx(CurFrame+Num);
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printProgramLocation();
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}
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void CLIDebugger::downCommand(std::string &Options) {
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unsigned Num =
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getOptionalUnsignedIntegerOption("'down' command", 1, Options);
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RuntimeInfo &RI = getRuntimeInfo();
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unsigned CurFrame = RI.getCurrentFrameIdx();
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// Check to see if we can go up the specified number of frames.
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if (CurFrame < Num) {
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if (Num == 1)
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throw "Bottom (i.e., innermost) frame selected; you cannot go down.";
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else
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throw "Cannot go down " + utostr(Num) + " frames!";
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}
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RI.setCurrentFrameIdx(CurFrame-Num);
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printProgramLocation();
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}
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void CLIDebugger::frameCommand(std::string &Options) {
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RuntimeInfo &RI = getRuntimeInfo();
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unsigned CurFrame = RI.getCurrentFrameIdx();
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unsigned Num =
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getOptionalUnsignedIntegerOption("'frame' command", CurFrame, Options);
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// Check to see if we go to the specified frame.
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RI.getStackFrame(Num);
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RI.setCurrentFrameIdx(Num);
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printProgramLocation();
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}
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//===----------------------------------------------------------------------===//
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// Breakpoint related commands
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//===----------------------------------------------------------------------===//
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void CLIDebugger::breakCommand(std::string &Options) {
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// Figure out where the user wants a breakpoint.
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const SourceFile *File;
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unsigned LineNo;
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// Check to see if the user specified a line specifier.
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std::string Option = getToken(Options); // strip whitespace
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if (!Option.empty()) {
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Options = Option + Options; // reconstruct string
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// Parse the line specifier.
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parseLineSpec(Options, File, LineNo);
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} else {
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// Build a line specifier for the current stack frame.
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throw "FIXME: breaking at the current location is not implemented yet!";
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}
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if (!File) File = CurrentFile;
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if (File == 0)
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throw "Unknown file to place breakpoint!";
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std::cerr << "Break: " << File->getFilename() << ":" << LineNo << "\n";
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throw "breakpoints not implemented yet!";
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}
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//===----------------------------------------------------------------------===//
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// Miscellaneous commands
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//===----------------------------------------------------------------------===//
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void CLIDebugger::infoCommand(std::string &Options) {
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std::string What = getToken(Options);
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if (What.empty() || !getToken(Options).empty()){
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std::string infoStr("info");
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helpCommand(infoStr);
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return;
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}
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if (What == "frame") {
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} else if (What == "functions") {
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const std::map<const GlobalVariable*, SourceFunctionInfo*> &Functions
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= getProgramInfo().getSourceFunctions();
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std::cout << "All defined functions:\n";
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// FIXME: GDB groups these by source file. We could do that I guess.
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|
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 == "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 == "") {
|
|
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 == "args") {
|
|
std::cout << "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)
|
|
std::cout << (i ? " " : "") << Dbg.getProgramArgument(i);
|
|
std::cout << "\"\n";
|
|
|
|
} else 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";
|
|
}
|
|
}
|