зеркало из https://github.com/mozilla/pjs.git
665 строки
17 KiB
C++
665 строки
17 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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// Debugee.cpp
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//
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// Scott M. Silver
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#include <Windows.h>
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#include "Debugee.h"
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#include <assert.h>
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#include <stdio.h>
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#include "Win32Util.h"
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#include "DataOutput.h"
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#include "Breakpoints.h"
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#include "DebuggerChannel.h"
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#include "ImageHlp.h"
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#include "prthread.h"
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extern DebugeeThread* gCurThread;
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extern DebugeeProcess* gProcess;
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void startupDebugee(LPTSTR lpszFileName, LPTSTR lpszTitle, PROCESS_INFORMATION* outProcessInfo);
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DebugeeProcess::
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DebugeeProcess(DEBUG_EVENT* inNewProcessEvent) :
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mCreateProcessInfo(inNewProcessEvent->u.CreateProcessInfo),
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mProcessH(inNewProcessEvent->u.CreateProcessInfo.hProcess),
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mDebuggerChannel(0)
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{
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assert(inNewProcessEvent->dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT);
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BOOL success = ::SymInitialize(mProcessH, NULL, FALSE);
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assert(success);
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addThread(new DebugeeThread(mCreateProcessInfo.hThread, inNewProcessEvent->dwThreadId, *this, false));
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printf("CREATE_PROCESS_DEBUG_EVENT\n");
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}
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void DebugeeProcess::
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kill()
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{
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::TerminateProcess(mProcessH, 0);
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setDebuggerThreadID(0); // since we are not reloading libDebuggerChannel, we need to
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// reset the debugger thread ID to zero, so we don't mistakenly
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// suspend the wrong thread
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}
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void DebugeeProcess::
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handleModuleLoad(HANDLE inFileH, void* inBaseOfImage)
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{
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if (!::SymLoadModule(mProcessH, inFileH, NULL, NULL, (DWORD) inBaseOfImage, 0))
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showLastError();
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}
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DebugeeThread* DebugeeProcess::
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idToThread(DWORD inThreadID)
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{
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DebugeeThread** curThread;
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for (curThread = mThreads.begin(); curThread < mThreads.end(); curThread++)
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if ((*curThread)->getThreadID() == inThreadID)
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return (*curThread);
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return (NULL);
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}
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// subsequent calls will fail if the first
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// time we could not connect to the ef process
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DebuggerClientChannel* DebugeeProcess::
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getChannel(bool inForce)
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{
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if (!mDebuggerChannel || (inForce && mDebuggerChannel == (DebuggerClientChannel*) this))
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{
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mDebuggerChannel = DebuggerClientChannel::createClient();
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if (mDebuggerChannel)
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return (mDebuggerChannel);
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else
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{
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mDebuggerChannel = (DebuggerClientChannel*) this;
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return (NULL);
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}
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}
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else if (mDebuggerChannel == (DebuggerClientChannel*) this)
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return (NULL);
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else
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return (mDebuggerChannel);
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}
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BOOL DebugeeProcess::
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writeMemory(void* inDest, void* inSrc, DWORD inSrcLen, DWORD* outBytesWritten)
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{
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return (::WriteProcessMemory(mProcessH, inDest, inSrc, inSrcLen, outBytesWritten));
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}
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BOOL DebugeeProcess::
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readMemory(const void* inSrc, void* inDest, DWORD inDestLen, DWORD* outBytesRead)
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{
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return (::ReadProcessMemory(mProcessH, inSrc, inDest, inDestLen, outBytesRead));
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}
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// this only returns the the debugee process starts up and is ready
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// for use. the debugee process is suspended, etc
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DebugeeProcess* DebugeeProcess::
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createDebugeeProcess(const char* inFullPath, DWORD inDebugEventHandlerID, HANDLE& outDebugThreadH)
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{
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DebugeeProcess::DebugStartupInfo startupInfo;
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startupInfo.fullPath = inFullPath;
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startupInfo.debugeeProcessCreated = ::CreateEvent(NULL, FALSE, FALSE, NULL);
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startupInfo.debugEventHandlerID = inDebugEventHandlerID;
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startupInfo.newDebugeeProcess = NULL;
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PR_CreateThread(PR_USER_THREAD,
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&debugEventThread,
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&startupInfo,
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PR_PRIORITY_NORMAL,
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PR_GLOBAL_THREAD,
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PR_JOINABLE_THREAD,
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0);
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// now wait until the process actually starts up
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::WaitForSingleObject(startupInfo.debugeeProcessCreated, INFINITE);
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// need to get to first instruction
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startupInfo.newDebugeeProcess->getMainThread()->singleStep();
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return (startupInfo.newDebugeeProcess);
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}
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void
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startupDebugee(LPTSTR lpszFileName, LPTSTR lpszTitle, PROCESS_INFORMATION* outProcessInfo)
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{
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// why does this retard not just assign to the structs, instead
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// of having pointers??
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STARTUPINFO StartupInfo;
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LPSTARTUPINFO lpStartupInfo = &StartupInfo;
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char* args = "-debug -html -sys -classpath \"\\trees\\ef1\\ns\\dist\\classes\\classes.zip:\\trees\\ef1\\ns\\dist\\classes\\tests.zip:\\trees\\ef1\\ns\\dist\\classes\\t1.zip\" javasoft/sqe/tests/api/java/lang/System/SystemTests10";
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char* commandLine = new char[strlen(lpszFileName) + strlen(args) + 2];
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sprintf(commandLine, "%s %s", lpszFileName, args);
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lpStartupInfo->cb = sizeof(STARTUPINFO);
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lpStartupInfo->lpDesktop = NULL;
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lpStartupInfo->lpTitle = lpszTitle;
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lpStartupInfo->dwX = 0;
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lpStartupInfo->dwY = 0;
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lpStartupInfo->dwXSize = 0;
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lpStartupInfo->dwYSize = 0;
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lpStartupInfo->dwFlags = (DWORD) NULL;
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lpStartupInfo->wShowWindow = SW_SHOWDEFAULT;
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outProcessInfo->hProcess = NULL;
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// create the Debuggee process instead
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if( !::CreateProcess(
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NULL,
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commandLine, //lpszFileName,
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(LPSECURITY_ATTRIBUTES) NULL,
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(LPSECURITY_ATTRIBUTES) NULL,
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TRUE,
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DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS | CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP,
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(LPVOID) NULL,
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(LPTSTR) NULL,
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lpStartupInfo, outProcessInfo))
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{
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showLastError();
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exit(-1);
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}
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delete commandLine;
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}
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void DebugeeProcess::
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debugEventThread(void* inStartupInfo)
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{
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bool fFinished = false;
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DEBUG_EVENT debugEvent;
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PROCESS_INFORMATION processInformation;
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DebugeeProcess::DebugStartupInfo* startupInfo = (DebugeeProcess::DebugStartupInfo*) inStartupInfo;
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DebugeeProcess* thisProcess = NULL;
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DebugeeThread* thread;
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bool didSuspend;
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// start debugee
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startupDebugee((char*) startupInfo->fullPath, (char*) startupInfo->fullPath, &processInformation);
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// debug event processing loop
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for(;;)
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{
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didSuspend = false;
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// wait for debug events
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if(!WaitForDebugEvent(&debugEvent, INFINITE))
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{
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showLastError();
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fFinished = true;
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break;
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}
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// our strategy is to suspend all (relevant)
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// threads, continue the debug event -- so all threads
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// continue so we can continue grabbing symbols, etc
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if (thisProcess)
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{
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thisProcess->suspendAll();
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didSuspend = true;
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thread = thisProcess->idToThread(debugEvent.dwThreadId); // can be null if CREATE_THREAD_EVENT
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if (!::ContinueDebugEvent(debugEvent.dwProcessId, debugEvent.dwThreadId, DBG_CONTINUE))
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showLastError();
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}
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beginOutput();
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switch(debugEvent.dwDebugEventCode)
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{
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// exception occured
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case EXCEPTION_DEBUG_EVENT:
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// figure out which type of exception
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switch(debugEvent.u.Exception.ExceptionRecord.ExceptionCode)
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{
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// hardware exceptions
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case EXCEPTION_ACCESS_VIOLATION:
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thread->suspend();
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disassembleN(thread->getProcess(), (char*) thread->getIP(), 10);
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printThreadStack(*thread);
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thread->print();
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::ContinueDebugEvent(debugEvent.dwProcessId, debugEvent.dwThreadId, DBG_CONTINUE);
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printf("EXCEPTION_ACCESS_VIOLATION\n");
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break;
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case EXCEPTION_DATATYPE_MISALIGNMENT:
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printf("EXCEPTION_ACCESS_VIOLATION\n");
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break;
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case EXCEPTION_BREAKPOINT:
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printf("EXCEPTION_BREAKPOINT\n");
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// so we need an extra continue for breakpoints??
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// ::ContinueDebugEvent(debugEvent.dwProcessId, debugEvent.dwThreadId, DBG_CONTINUE);
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thread->suspend();
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thisProcess->handleBreakpoint(debugEvent, thread);
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break;
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case EXCEPTION_SINGLE_STEP:
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printf("EXCEPTION_SINGLE_STEP\n");
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thread->suspend();
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thisProcess->handleSingleStep(debugEvent, thread);
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break;
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case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
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printf("EXCEPTION_ARRAY_BOUNDS_EXCEEDED\n");
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break;
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case EXCEPTION_FLT_DENORMAL_OPERAND:
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printf("EXCEPTION_FLT_DENORMAL_OPERAND\n");
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break;
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case EXCEPTION_FLT_DIVIDE_BY_ZERO:
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printf("EXCEPTION_FLT_DIVIDE_BY_ZERO\n");
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break;
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case EXCEPTION_FLT_INEXACT_RESULT:
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printf("EXCEPTION_FLT_INEXACT_RESULT\n");
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break;
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case EXCEPTION_FLT_INVALID_OPERATION:
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printf("EXCEPTION_FLT_INVALID_OPERATION\n");
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break;
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case EXCEPTION_FLT_OVERFLOW:
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printf("EXCEPTION_FLT_OVERFLOW\n");
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break;
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case EXCEPTION_FLT_STACK_CHECK:
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printf("EXCEPTION_FLT_STACK_CHECK\n");
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break;
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case EXCEPTION_FLT_UNDERFLOW:
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printf("EXCEPTION_FLT_UNDERFLOW\n");
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break;
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case EXCEPTION_INT_DIVIDE_BY_ZERO:
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printf("EXCEPTION_INT_DIVIDE_BY_ZERO\n");
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break;
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case EXCEPTION_INT_OVERFLOW:
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printf("EXCEPTION_INT_OVERFLOW\n");
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break;
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case EXCEPTION_PRIV_INSTRUCTION:
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printf("EXCEPTION_PRIV_INSTRUCTION\n");
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break;
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case EXCEPTION_IN_PAGE_ERROR:
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printf("EXCEPTION_IN_PAGE_ERROR\n");
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break;
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// Debug exceptions
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case DBG_TERMINATE_THREAD:
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printf("DBG_TERMINATE_THREAD\n");
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break;
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case DBG_TERMINATE_PROCESS:
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printf("DBG_TERMINATE_PROCESS\n");
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break;
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case DBG_CONTROL_C:
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printf("DBG_CONTROL_C\n");
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break;
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case DBG_CONTROL_BREAK:
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printf("DBG_CONTROL_BREAK\n");
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break;
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// RPC exceptions (some)
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case RPC_S_UNKNOWN_IF:
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printf("RPC_S_UNKNOWN_IF\n");
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break;
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case RPC_S_SERVER_UNAVAILABLE:
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printf("RPC_S_SERVER_UNAVAILABLE\n");
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break;
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default:
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printf("unhandled event\n");
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break;
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}
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if(1)
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{
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;
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}
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else
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{
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if(debugEvent.u.Exception.dwFirstChance != 0)
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;
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else
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;
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}
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break;
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case CREATE_THREAD_DEBUG_EVENT:
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{
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printf("CREATE_THREAD_DEBUG_EVENT\n");
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bool suspendable = (getDebuggerThreadID() != 0 && debugEvent.dwThreadId != getDebuggerThreadID()); // if we have a debugger thread ID then this thread is suspendable
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thisProcess->addThread(thread = new DebugeeThread(debugEvent.u.CreateThread.hThread, debugEvent.dwThreadId, *thisProcess, suspendable));
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}
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break;
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case CREATE_PROCESS_DEBUG_EVENT:
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assert(startupInfo->newDebugeeProcess == NULL); // can only get here once
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thisProcess = startupInfo->newDebugeeProcess = new DebugeeProcess(&debugEvent);
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gCurThread = thisProcess->getMainThread();
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thisProcess->handleModuleLoad(debugEvent.u.CreateProcessInfo.hFile, debugEvent.u.CreateProcessInfo.lpBaseOfImage);
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gCurThread->suspend();
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::SetEvent(startupInfo->debugeeProcessCreated);
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::ContinueDebugEvent(debugEvent.dwProcessId, debugEvent.dwThreadId, DBG_CONTINUE);
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break;
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case EXIT_THREAD_DEBUG_EVENT:
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printf("EXIT_THREAD_DEBUG_EVENT\n");
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break;
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case EXIT_PROCESS_DEBUG_EVENT:
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fFinished = true;
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printf("EXIT_PROCESS_DEBUG_EVENT\n");
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break;
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case LOAD_DLL_DEBUG_EVENT:
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char dllName[512];
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retrieveModuleName(dllName, debugEvent.u.LoadDll.hFile);
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printf("Dll Load: %s\n", dllName);
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thisProcess->handleModuleLoad(debugEvent.u.LoadDll.hFile, debugEvent.u.LoadDll.lpBaseOfDll);
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break;
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case UNLOAD_DLL_DEBUG_EVENT:
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printf("UNLOAD_DLL_DEBUG_EVENT\n");
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break;
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case OUTPUT_DEBUG_STRING_EVENT:
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printf("OUTPUT_DEBUG_STRING_EVENT\n");
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break;
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case RIP_EVENT:
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printf("RIP_EVENT\n");
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break;
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default:
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printf("unhandled event\n");
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break;
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}
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if (didSuspend)
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thisProcess->resumeAll();
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endOutput();
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// default action, just continue
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if(fFinished)
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break;
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}
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gProcess = NULL;
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// decrement active process count
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::ExitThread(TRUE);
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// return(TRUE);
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}
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BOOL DebugeeThread::
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getContext(DWORD inContextFlags, CONTEXT& outContext)
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{
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outContext.ContextFlags = inContextFlags;
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return (::GetThreadContext(mThreadH, &outContext));
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}
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BOOL DebugeeThread::
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setContext(DWORD inContextFlags, CONTEXT& ioContext)
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{
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ioContext.ContextFlags = inContextFlags;
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return (::SetThreadContext(mThreadH, &ioContext));
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}
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bool DebugeeProcess::
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handleSingleStep(const DEBUG_EVENT& inDebugEvent, DebugeeThread* inThread)
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{
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disassembleBytes(*this, (char*) inDebugEvent.u.Exception.ExceptionRecord.ExceptionAddress, 32);
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||
|
|
||
|
// reset out of single step mode
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
// clear trap bit
|
||
|
inThread->getContext(CONTEXT_CONTROL, threadContext);
|
||
|
threadContext.EFlags &= ~0x100;
|
||
|
inThread->setContext(CONTEXT_CONTROL, threadContext);
|
||
|
|
||
|
inThread->handleSingleStep();
|
||
|
|
||
|
return (true);
|
||
|
}
|
||
|
|
||
|
|
||
|
bool DebugeeProcess::
|
||
|
handleBreakpoint(const DEBUG_EVENT& inDebugEvent, DebugeeThread* inThread)
|
||
|
{
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
inThread->getContext(CONTEXT_CONTROL, threadContext);
|
||
|
// now set back the ip to the beginning of the debug statement
|
||
|
// if we are at one of our breakpoints, the resume will handle skipping
|
||
|
// over this
|
||
|
if (BreakpointManager::findBreakpoint((void*) inDebugEvent.u.Exception.ExceptionRecord.ExceptionAddress))
|
||
|
{
|
||
|
threadContext.Eip = (DWORD) inDebugEvent.u.Exception.ExceptionRecord.ExceptionAddress;
|
||
|
inThread->setContext(CONTEXT_CONTROL, threadContext);
|
||
|
}
|
||
|
|
||
|
return (true);
|
||
|
}
|
||
|
|
||
|
|
||
|
// return true if we really did single step
|
||
|
void DebugeeThread::
|
||
|
singleStep()
|
||
|
{
|
||
|
if (!mSuspendable)
|
||
|
return;
|
||
|
|
||
|
// set into single step mode
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
getContext(CONTEXT_CONTROL, threadContext);
|
||
|
|
||
|
// set trap bit
|
||
|
threadContext.EFlags |= 0x100;
|
||
|
setContext(CONTEXT_CONTROL, threadContext);
|
||
|
|
||
|
resume(true);
|
||
|
}
|
||
|
|
||
|
|
||
|
void DebugeeProcess::
|
||
|
suspendAll()
|
||
|
{
|
||
|
DebugeeThread** curThread;
|
||
|
|
||
|
for(curThread = mThreads.begin(); curThread < mThreads.end(); curThread++)
|
||
|
(*curThread)->suspend();
|
||
|
}
|
||
|
|
||
|
void DebugeeProcess::
|
||
|
resumeAll()
|
||
|
{
|
||
|
DebugeeThread** curThread;
|
||
|
|
||
|
for(curThread = mThreads.begin(); curThread < mThreads.end(); curThread++)
|
||
|
(*curThread)->resume();
|
||
|
}
|
||
|
|
||
|
|
||
|
DebugeeProcess::SymbolKind DebugeeProcess::
|
||
|
getSymbol(const void* inPC, char* outName, DWORD inBufLen, DWORD& outOffset)
|
||
|
{
|
||
|
DebugeeProcess::SymbolKind kind = kNil;
|
||
|
char* symbolName;
|
||
|
|
||
|
// will deadlock getting a symbol when the debugger thread or
|
||
|
// main/io thread is suspended.
|
||
|
assert( getDebuggerThreadID() &&
|
||
|
!threadSuspendCount(idToThread(getDebuggerThreadID())->getThreadHandle()) &&
|
||
|
!threadSuspendCount(getMainThread()->getThreadHandle()));
|
||
|
|
||
|
// IMAGEHLP is silly and wants the data to go at the end of the struct
|
||
|
IMAGEHLP_SYMBOL* symbol = (IMAGEHLP_SYMBOL*) malloc(sizeof(IMAGEHLP_SYMBOL) + inBufLen);
|
||
|
symbol->MaxNameLength = inBufLen;
|
||
|
|
||
|
if (::SymGetSymFromAddr(mProcessH, (DWORD) inPC, &outOffset, symbol))
|
||
|
{
|
||
|
strcpy(outName, symbol->Name); // copy to user's buffer
|
||
|
free(symbol);
|
||
|
kind = kNative;
|
||
|
}
|
||
|
else if (getChannel())
|
||
|
{
|
||
|
// return (kind);
|
||
|
if ((symbolName = getChannel()->requestAddressToMethod(inPC, (Int32&) outOffset)))
|
||
|
{
|
||
|
strncpy(outName, symbolName, inBufLen); // copy to user's buffer
|
||
|
delete [] symbolName;
|
||
|
kind = kJava;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return (kind);
|
||
|
}
|
||
|
|
||
|
|
||
|
void* DebugeeProcess::
|
||
|
getAddress(const char* inMethodName)
|
||
|
{
|
||
|
void* address = NULL;
|
||
|
|
||
|
if (getChannel())
|
||
|
address = getChannel()->requestMethodToAddress(inMethodName);
|
||
|
|
||
|
return (address);
|
||
|
}
|
||
|
|
||
|
|
||
|
void DebugeeThread::
|
||
|
handleSingleStep()
|
||
|
{
|
||
|
if (mBp)
|
||
|
{
|
||
|
mBp->set(); // reset this breakpoint
|
||
|
mBp = NULL;
|
||
|
if (mStaySuspended)
|
||
|
suspend(); // this will up our suspend count, so we won't get resumed in
|
||
|
// the next statement
|
||
|
mProcess.resumeAll(); // resume (put back state) of other threads
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
DWORD DebugeeThread::
|
||
|
suspend()
|
||
|
{
|
||
|
if (!mSuspendable)
|
||
|
return 0;
|
||
|
|
||
|
// no suspending the debugger thread or main thread
|
||
|
assert(getDebuggerThreadID() != mThreadID);
|
||
|
assert(mProcess.getMainThread() != this);
|
||
|
|
||
|
return (::SuspendThread(mThreadH));
|
||
|
}
|
||
|
|
||
|
|
||
|
DWORD DebugeeThread::
|
||
|
resume(bool inSingleStepping)
|
||
|
{
|
||
|
if (!mSuspendable)
|
||
|
return 0;
|
||
|
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
getContext(CONTEXT_CONTROL, threadContext);
|
||
|
|
||
|
// if this thread would be resumed by our resuming it
|
||
|
// major race condition between when we check to see if we'll be resuming
|
||
|
// and the actual resume
|
||
|
// if we have a breakpoint at this instruction
|
||
|
// suspend all threads
|
||
|
// put this thread into single step mode
|
||
|
// push a pending to-do for the single step for this thread
|
||
|
// (ie put back the breakpoint)
|
||
|
Breakpoint* bp;
|
||
|
if ((threadSuspendCount(mThreadH) == 1) && (bp = BreakpointManager::findBreakpoint((void*) threadContext.Eip)))
|
||
|
{
|
||
|
mProcess.suspendAll();
|
||
|
::ResumeThread(mThreadH); // we shouldn't be suspended twice
|
||
|
bp->replace();
|
||
|
threadContext.EFlags |= 0x100; // single step mode
|
||
|
setContext(CONTEXT_CONTROL, threadContext);
|
||
|
pushSingleStepAction(bp, inSingleStepping);
|
||
|
}
|
||
|
|
||
|
return (::ResumeThread(mThreadH)); // now really resume this threac
|
||
|
}
|
||
|
|
||
|
|
||
|
void* DebugeeThread::
|
||
|
getIP()
|
||
|
{
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
getContext(CONTEXT_CONTROL, threadContext);
|
||
|
return ((void*) threadContext.Eip);
|
||
|
}
|
||
|
|
||
|
|
||
|
void* DebugeeThread::
|
||
|
getSP()
|
||
|
{
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
getContext(CONTEXT_CONTROL, threadContext);
|
||
|
return ((void*) threadContext.Esp);
|
||
|
}
|
||
|
|
||
|
|
||
|
void DebugeeThread::
|
||
|
print()
|
||
|
{
|
||
|
CONTEXT threadContext;
|
||
|
|
||
|
getContext(CONTEXT_CONTROL, threadContext);
|
||
|
DWORD suspendCount = threadSuspendCount(mThreadH);
|
||
|
char symbol[512];
|
||
|
char* printSymbol;
|
||
|
|
||
|
|
||
|
DWORD offset;
|
||
|
printSymbol = (mProcess.getSymbol((void*) threadContext.Eip, symbol, sizeof(symbol), offset)) ? symbol : "<anonymous>";
|
||
|
|
||
|
printf("%4.4x%5.4x%10s(%5d)%9.8p %s", getThreadID(), mThreadH, (suspendCount >= 0) ? "suspended" : "running", suspendCount, threadContext.Eip, printSymbol);
|
||
|
|
||
|
if (getDebuggerThreadID() == mThreadID)
|
||
|
printf("[debugger]");
|
||
|
else if (mProcess.getMainThread() == this)
|
||
|
printf("[main-i/o]");
|
||
|
}
|