mirror of https://github.com/x64dbg/TitanEngine
Remove a redundant GetThreadContext for synchronized breakpoints
This commit is contained in:
parent
8d833fb2e3
commit
d0b7e5addd
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@ -8,6 +8,7 @@
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#include "Global.Threader.h"
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#include "Global.Librarian.h"
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#include "Global.TLS.h"
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#include <unordered_map>
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#define UE_MODULEx86 0x2000;
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#define UE_MODULEx64 0x2000;
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@ -67,7 +68,6 @@ __declspec(dllexport) void TITCALL DebugLoop()
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ULONG_PTR NumberOfBytesReadWritten = 0;
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MEMORY_BASIC_INFORMATION MemInfo;
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HANDLE hActiveThread;
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CONTEXT myDBGContext;
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DWORD OldProtect;
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DWORD NewProtect;
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DWORD DebugRegisterXId = NULL;
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@ -80,7 +80,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
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wchar_t* szTranslatedNativeName;
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DWORD ThreadBeingProcessed = 0;
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std::vector<THREAD_ITEM_DATA> SuspendedThreads;
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std::unordered_map<DWORD, THREAD_ITEM_DATA> SuspendedThreads;
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bool IsDbgReplyLaterSupported = false;
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// Check if DBG_REPLY_LATER is supported based on Windows version (Windows 10, version 1507 or above)
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@ -112,6 +112,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
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while(!BreakDBG) //actual debug loop
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{
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bool synchronizedStep = false;
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// Fix based on work by https://github.com/number201724
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if(!WaitForDebugEvent(&DBGEvent, 100))
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{
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@ -154,8 +155,8 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(ThreadBeingProcessed != 0 && DBGEvent.dwThreadId == ThreadBeingProcessed)
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{
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// Resume the other threads since the thread being processed is exiting
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for(auto & Thread : SuspendedThreads)
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ResumeThread(Thread.hThread);
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for(auto & itr : SuspendedThreads)
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ResumeThread(itr.second.hThread);
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SuspendedThreads.clear();
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ThreadBeingProcessed = 0;
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@ -552,10 +553,14 @@ __declspec(dllexport) void TITCALL DebugLoop()
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FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
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DBGCode = DBG_CONTINUE;
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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CONTEXT myDBGContext;
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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if(FoundBreakPoint.BreakPointType != UE_SINGLESHOOT)
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if (FoundBreakPoint.BreakPointType != UE_SINGLESHOOT)
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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}
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#if defined(_WIN64)
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myDBGContext.Rip = myDBGContext.Rip - FoundBreakPoint.BreakPointSize;
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#else
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@ -642,8 +647,8 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(IsDbgReplyLaterSupported)
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{
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// Resume the other threads since we are done processing the single step
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for(auto & Thread : SuspendedThreads)
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ResumeThread(Thread.hThread);
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for(auto & itr : SuspendedThreads)
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ResumeThread(itr.second.hThread);
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SuspendedThreads.clear();
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ThreadBeingProcessed = 0;
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@ -673,12 +678,16 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else
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{
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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EngineCloseHandle(hActiveThread);
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{
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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CONTEXT myDBGContext;
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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EngineCloseHandle(hActiveThread);
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}
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}
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}
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if(ResetHwBPX) //restore hardware breakpoint
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@ -727,6 +736,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
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{
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//handle hardware breakpoints
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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CONTEXT myDBGContext;
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myDBGContext.ContextFlags = CONTEXT_DEBUG_REGISTERS | ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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if((ULONG_PTR)DBGEvent.u.Exception.ExceptionRecord.ExceptionAddress == myDBGContext.Dr0 || (myDBGContext.Dr6 & 0x1))
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@ -734,8 +744,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(DebugRegister[0].DrxEnabled)
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{
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DBGCode = DBG_CONTINUE;
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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myCustomHandler = (fCustomHandler)(DebugRegister[0].DrxCallBack);
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myCustomHandler((void*)myDBGContext.Dr0);
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if(DebugRegister[0].DrxEnabled)
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@ -762,8 +775,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(DebugRegister[1].DrxEnabled)
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{
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DBGCode = DBG_CONTINUE;
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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myCustomHandler = (fCustomHandler)(DebugRegister[1].DrxCallBack);
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myCustomHandler((void*)myDBGContext.Dr1);
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if(DebugRegister[1].DrxEnabled)
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@ -790,8 +806,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(DebugRegister[2].DrxEnabled)
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{
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DBGCode = DBG_CONTINUE;
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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myCustomHandler = (fCustomHandler)(DebugRegister[2].DrxCallBack);
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myCustomHandler((void*)myDBGContext.Dr2);
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if(DebugRegister[2].DrxEnabled)
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@ -818,8 +837,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(DebugRegister[3].DrxEnabled)
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{
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DBGCode = DBG_CONTINUE;
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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myCustomHandler = (fCustomHandler)(DebugRegister[3].DrxCallBack);
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myCustomHandler((void*)myDBGContext.Dr3);
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if(DebugRegister[3].DrxEnabled)
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@ -893,6 +915,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(bFoundBreakPoint) //found memory breakpoint
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{
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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CONTEXT myDBGContext;
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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DBGCode = DBG_CONTINUE; //debugger handled the exception
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@ -905,8 +928,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -923,8 +949,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //restore the memory breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -936,8 +965,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //no read operation, restore breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -952,8 +984,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //restore breakpoint after trap flag
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -965,8 +1000,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //no write operation, restore breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -982,8 +1020,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -996,8 +1037,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //no execute operation, restore breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1062,6 +1106,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(bFoundBreakPoint && engineMembpAlt) //found memory breakpoint
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{
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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CONTEXT myDBGContext;
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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DBGCode = DBG_CONTINUE; //debugger handled the exception
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@ -1075,8 +1120,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1093,8 +1141,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //restore the memory breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1105,8 +1156,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //no read operation, restore breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1121,8 +1175,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //restore breakpoint after trap flag
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1133,8 +1190,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //no write operation, restore breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1150,8 +1210,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1163,8 +1226,11 @@ __declspec(dllexport) void TITCALL DebugLoop()
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}
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else //no execute operation, restore breakpoint
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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SetThreadContext(hActiveThread, &myDBGContext);
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}
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ResetMemBPXAddress = FoundBreakPoint.BreakPointAddress;
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ResetMemBPXSize = FoundBreakPoint.BreakPointSize;
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ResetMemBPX = true;
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@ -1238,13 +1304,21 @@ __declspec(dllexport) void TITCALL DebugLoop()
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{
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FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
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DBGCode = DBG_CONTINUE;
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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if(FoundBreakPoint.BreakPointType != UE_SINGLESHOOT)
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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SetThreadContext(hActiveThread, &myDBGContext);
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EngineCloseHandle(hActiveThread);
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{
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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CONTEXT myDBGContext;
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myDBGContext.ContextFlags = ContextControlFlags;
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GetThreadContext(hActiveThread, &myDBGContext);
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if (FoundBreakPoint.BreakPointType != UE_SINGLESHOOT)
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{
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myDBGContext.EFlags |= UE_TRAP_FLAG;
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synchronizedStep = true;
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}
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SetThreadContext(hActiveThread, &myDBGContext);
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EngineCloseHandle(hActiveThread);
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}
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VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, FoundBreakPoint.BreakPointSize, OldProtect, &OldProtect);
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if(FoundBreakPoint.BreakPointType == UE_SINGLESHOOT)
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@ -1398,31 +1472,26 @@ __declspec(dllexport) void TITCALL DebugLoop()
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if(IsDbgReplyLaterSupported && DBGEvent.dwDebugEventCode != EXIT_THREAD_DEBUG_EVENT)
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{
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CONTEXT DbgCtx;
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DbgCtx.ContextFlags = ContextControlFlags;
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hActiveThread = EngineOpenThread(THREAD_GETSETSUSPEND, false, DBGEvent.dwThreadId);
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if(hActiveThread != NULL)
|
||||
{
|
||||
// If TF is set (single step), then suspend all the other threads
|
||||
if(GetThreadContext(hActiveThread, &DbgCtx) && (DbgCtx.EFlags & UE_TRAP_FLAG))
|
||||
if(synchronizedStep)
|
||||
{
|
||||
ThreadBeingProcessed = DBGEvent.dwThreadId;
|
||||
|
||||
for(auto & Thread : hListThread)
|
||||
{
|
||||
// Do not suspend the current thread
|
||||
if(ThreadBeingProcessed == Thread.dwThreadId)
|
||||
continue;
|
||||
|
||||
// Check if the thread is already suspended
|
||||
for(auto & SuspendedThread : SuspendedThreads)
|
||||
if(SuspendedThread.dwThreadId == Thread.dwThreadId)
|
||||
continue;
|
||||
if (SuspendedThreads.count(Thread.dwThreadId) != 0)
|
||||
continue;
|
||||
|
||||
if(SuspendThread(Thread.hThread) != -1)
|
||||
SuspendedThreads.push_back(Thread);
|
||||
if (SuspendThread(Thread.hThread) != -1)
|
||||
SuspendedThreads.emplace(Thread.dwThreadId, Thread);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue