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153 lines
3.5 KiB
153 lines
3.5 KiB
/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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vdmtrace.c
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Abstract:
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This module contains the support maintaining the VDM trace log.
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Author:
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Neil Sandlin (neilsa) 15-Sep-1996
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Revision History:
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--*/
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#include "vdmp.h"
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VOID
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VdmTraceEvent(
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USHORT Type,
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USHORT wData,
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USHORT lData,
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PKTRAP_FRAME TrapFrame
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, VdmTraceEvent)
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#endif
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VOID
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VdmTraceEvent(
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USHORT Type,
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USHORT wData,
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USHORT lData,
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PKTRAP_FRAME TrapFrame
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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None
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--*/
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{
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#if 0
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// This code represents a security problem. Since it is only used
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// on special occasions, it won't be built into the standard build.
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// Individuals wishing to use it can build themselves a kernel with
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// it in.
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PVDM_TIB VdmTib;
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NTSTATUS Status = STATUS_SUCCESS;
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KIRQL OldIrql;
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PVDM_TRACEENTRY pEntry;
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PVDM_TRACEINFO pInfo;
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LARGE_INTEGER CurTime, DiffTime;
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PAGED_CODE();
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#if 0
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//
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// Raise Irql to APC level...
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//
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KeRaiseIrql(APC_LEVEL, &OldIrql);
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//
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// VdmTib is in user mode memory
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//
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try {
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#endif
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if ((*FIXED_NTVDMSTATE_LINEAR) & VDM_TRACE_HISTORY)) {
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//
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// Get a pointer to the VdmTib
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//
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VdmTib = NtCurrentTeb()->Vdm;
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if (VdmTib->TraceInfo.pTraceTable) {
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pEntry = &VdmTib->TraceInfo.pTraceTable[VdmTib->TraceInfo.CurrentEntry];
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pEntry->Type = Type;
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pEntry->wData = wData;
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pEntry->lData = lData;
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switch (VdmTib->TraceInfo.Flags & VDMTI_TIMER_MODE) {
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case VDMTI_TIMER_TICK:
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CurTime.LowPart = NtGetTickCount();
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pEntry->Time = CurTime.LowPart - VdmTib->TraceInfo.TimeStamp.LowPart;
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VdmTib->TraceInfo.TimeStamp.LowPart = CurTime.LowPart;
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break;
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case VDMTI_TIMER_PERFCTR:
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pEntry->Time = 0;
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break;
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case VDMTI_TIMER_STAT:
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pEntry->Time = 0;
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break;
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}
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pEntry->eax = TrapFrame->Eax;
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pEntry->ebx = TrapFrame->Ebx;
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pEntry->ecx = TrapFrame->Ecx;
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pEntry->edx = TrapFrame->Edx;
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pEntry->esi = TrapFrame->Esi;
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pEntry->edi = TrapFrame->Edi;
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pEntry->ebp = TrapFrame->Ebp;
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pEntry->esp = TrapFrame->HardwareEsp;
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pEntry->eip = TrapFrame->Eip;
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pEntry->eflags = TrapFrame->EFlags;
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pEntry->cs = (USHORT) TrapFrame->SegCs;
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pEntry->ds = (USHORT) TrapFrame->SegDs;
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pEntry->es = (USHORT) TrapFrame->SegEs;
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pEntry->fs = (USHORT) TrapFrame->SegFs;
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pEntry->gs = (USHORT) TrapFrame->SegGs;
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pEntry->ss = (USHORT) TrapFrame->HardwareSegSs;
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if (++VdmTib->TraceInfo.CurrentEntry >=
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(VdmTib->TraceInfo.NumPages*4096/sizeof(VDM_TRACEENTRY))) {
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VdmTib->TraceInfo.CurrentEntry = 0;
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}
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}
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}
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#if 0
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} except(EXCEPTION_EXECUTE_HANDLER) {
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Status = GetExceptionCode();
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}
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KeLowerIrql(OldIrql);
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#endif
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#else
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UNREFERENCED_PARAMETER (Type);
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UNREFERENCED_PARAMETER (wData);
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UNREFERENCED_PARAMETER (lData);
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UNREFERENCED_PARAMETER (TrapFrame);
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#endif
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}
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