124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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kdlog.c
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Abstract:
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WinDbg Extension Api
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Author:
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Neil Sandlin (neilsa) 31-Oct-2000
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Environment:
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User Mode.
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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DECLARE_API( kdlog )
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/*++
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Routine Description:
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This routine dumps the KdLog buffer. This is logging data created
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by the KD client code (e.g. KD1394.DLL).
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Arguments:
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args - not used
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Return Value:
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None
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--*/
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{
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ULONG64 LogContext;
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ULONG64 Index, LastIndex, Count, EntryLength, TotalLogged;
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ULONG64 LogData;
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CHAR buffer[256];
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ULONG64 LogEntry;
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ULONG bytesRead;
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LogContext = GetExpression("kdcom!KdLogContext");
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if (LogContext == 0) {
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LogContext = GetExpression("kd1394!KdLogContext");
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if (LogContext == 0) {
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dprintf("Error resolving address of hal!KdDebuggerLogContext\n");
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return E_INVALIDARG;
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}
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}
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if (GetFieldValue(LogContext, "_KD_DBG_LOG_CONTEXT", "Index", Index)) {
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dprintf("Error resolving field 'Index'\n");
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return E_INVALIDARG;
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}
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if (GetFieldValue(LogContext, "_KD_DBG_LOG_CONTEXT", "LastIndex", LastIndex)) {
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dprintf("Error resolving field 'LastIndex'\n");
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return E_INVALIDARG;
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}
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if (GetFieldValue(LogContext, "_KD_DBG_LOG_CONTEXT", "Count", Count)) {
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dprintf("Error resolving field 'Count'\n");
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return E_INVALIDARG;
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}
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if (GetFieldValue(LogContext, "_KD_DBG_LOG_CONTEXT", "EntryLength", EntryLength)) {
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dprintf("Error resolving field 'EntryLength'\n");
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return E_INVALIDARG;
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}
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if (GetFieldValue(LogContext, "_KD_DBG_LOG_CONTEXT", "TotalLogged", TotalLogged)) {
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dprintf("Error resolving field 'TotalLogged'\n");
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return E_INVALIDARG;
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}
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if (GetFieldValue(LogContext, "_KD_DBG_LOG_CONTEXT", "LogData", LogData)) {
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dprintf("Error resolving field 'Index'\n");
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return E_INVALIDARG;
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}
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dprintf("Context Ptr %.8p TotalLogged %.8p EntryLength %.8p\n", LogContext, TotalLogged, EntryLength);
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dprintf("Index %.8p LastIndex %.8p Count %.8p LogData %.8p\n\n", Index, LastIndex, Count, LogData);
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if (EntryLength > 256) {
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dprintf("Entry length %d too long\n", EntryLength);
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return E_INVALIDARG;
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}
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Index = ((Index - Count) + (LastIndex+1)) % (LastIndex+1);
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while(Count--) {
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if (CheckControlC()) {
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return S_OK;
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}
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LogEntry = LogData + Index*EntryLength;
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if (!ReadMemory(LogEntry, buffer, (ULONG)EntryLength, &bytesRead)) {
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dprintf("ReadMemory error at %.8p\n", LogEntry);
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return E_INVALIDARG;
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}
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dprintf("%s", buffer);
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Index++;
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if (Index == (LastIndex+1)) {
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Index = 0;
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}
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}
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return S_OK;
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}
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