mirror of
https://github.com/reactos/reactos.git
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355 lines
9.8 KiB
C
355 lines
9.8 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/kd64/kdprint.c
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* PURPOSE: KD64 Trap Handler Routines
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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* Stefan Ginsberg (stefan.ginsberg@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS *****************************************************************/
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BOOLEAN
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NTAPI
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KdpPrintString(IN PSTRING Output)
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{
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STRING Data, Header;
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DBGKD_DEBUG_IO DebugIo;
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USHORT Length = Output->Length;
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/* Copy the string */
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RtlMoveMemory(KdpMessageBuffer, Output->Buffer, Length);
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/* Make sure we don't exceed the KD Packet size */
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if ((sizeof(DBGKD_DEBUG_IO) + Length) > PACKET_MAX_SIZE)
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{
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/* Normalize length */
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Length = PACKET_MAX_SIZE - sizeof(DBGKD_DEBUG_IO);
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}
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/* Build the packet header */
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DebugIo.ApiNumber = DbgKdPrintStringApi;
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DebugIo.ProcessorLevel = KeProcessorLevel;
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DebugIo.Processor = KeGetCurrentPrcb()->Number;
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DebugIo.u.PrintString.LengthOfString = Length;
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Header.Length = sizeof(DBGKD_DEBUG_IO);
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Header.Buffer = (PCHAR)&DebugIo;
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/* Build the data */
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Data.Length = Length;
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Data.Buffer = KdpMessageBuffer;
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/* Send the packet */
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KdSendPacket(PACKET_TYPE_KD_DEBUG_IO, &Header, &Data, &KdpContext);
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/* Check if the user pressed CTRL+C */
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return KdpPollBreakInWithPortLock();
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}
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BOOLEAN
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NTAPI
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KdpPromptString(IN PSTRING PromptString,
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IN PSTRING ResponseString)
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{
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STRING Data, Header;
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DBGKD_DEBUG_IO DebugIo;
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ULONG Length = PromptString->Length;
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KDSTATUS Status;
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/* Copy the string to the message buffer */
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RtlCopyMemory(KdpMessageBuffer,
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PromptString->Buffer,
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PromptString->Length);
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/* Make sure we don't exceed the KD Packet size */
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if ((sizeof(DBGKD_DEBUG_IO) + Length) > PACKET_MAX_SIZE)
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{
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/* Normalize length */
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Length = PACKET_MAX_SIZE - sizeof(DBGKD_DEBUG_IO);
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}
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/* Build the packet header */
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DebugIo.ApiNumber = DbgKdGetStringApi;
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DebugIo.ProcessorLevel = KeProcessorLevel;
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DebugIo.Processor = KeGetCurrentPrcb()->Number;
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DebugIo.u.GetString.LengthOfPromptString = Length;
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DebugIo.u.GetString.LengthOfStringRead = ResponseString->MaximumLength;
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Header.Length = sizeof(DBGKD_DEBUG_IO);
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Header.Buffer = (PCHAR)&DebugIo;
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/* Build the data */
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Data.Length = PromptString->Length;
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Data.Buffer = KdpMessageBuffer;
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/* Send the packet */
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KdSendPacket(PACKET_TYPE_KD_DEBUG_IO, &Header, &Data, &KdpContext);
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/* Set the maximum lengths for the receive */
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Header.MaximumLength = sizeof(DBGKD_DEBUG_IO);
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Data.MaximumLength = sizeof(KdpMessageBuffer);
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/* Enter receive loop */
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do
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{
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/* Get our reply */
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Status = KdReceivePacket(PACKET_TYPE_KD_DEBUG_IO,
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&Header,
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&Data,
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&Length,
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&KdpContext);
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/* Return TRUE if we need to resend */
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if (Status == KdPacketNeedsResend) return TRUE;
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/* Loop until we succeed */
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} while (Status != KdPacketReceived);
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/* Don't copy back a larger response than there is room for */
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Length = min(Length, ResponseString->MaximumLength);
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/* Copy back the string and return the length */
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RtlCopyMemory(ResponseString->Buffer, KdpMessageBuffer, Length);
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ResponseString->Length = Length;
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/* Success; we don't need to resend */
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return FALSE;
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}
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VOID
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NTAPI
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KdpCommandString(IN PSTRING NameString,
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IN PSTRING CommandString,
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IN KPROCESSOR_MODE PreviousMode,
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IN PCONTEXT ContextRecord,
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IN PKTRAP_FRAME TrapFrame,
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IN PKEXCEPTION_FRAME ExceptionFrame)
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{
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BOOLEAN Enable;
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PKPRCB Prcb = KeGetCurrentPrcb();
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/* Check if we need to do anything */
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if ((PreviousMode != KernelMode) || (KdDebuggerNotPresent)) return;
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/* Enter the debugger */
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Enable = KdEnterDebugger(TrapFrame, ExceptionFrame);
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/* Save the CPU Control State and save the context */
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KiSaveProcessorControlState(&Prcb->ProcessorState);
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RtlCopyMemory(&Prcb->ProcessorState.ContextFrame,
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ContextRecord,
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sizeof(CONTEXT));
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/* Send the command string to the debugger */
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KdpReportCommandStringStateChange(NameString,
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CommandString,
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&Prcb->ProcessorState.ContextFrame);
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/* Restore the processor state */
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RtlCopyMemory(ContextRecord,
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&Prcb->ProcessorState.ContextFrame,
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sizeof(CONTEXT));
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KiRestoreProcessorControlState(&Prcb->ProcessorState);
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/* Exit the debugger and return */
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KdExitDebugger(Enable);
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}
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VOID
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NTAPI
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KdpSymbol(IN PSTRING DllPath,
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IN PKD_SYMBOLS_INFO SymbolInfo,
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IN BOOLEAN Unload,
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IN KPROCESSOR_MODE PreviousMode,
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IN PCONTEXT ContextRecord,
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IN PKTRAP_FRAME TrapFrame,
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IN PKEXCEPTION_FRAME ExceptionFrame)
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{
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BOOLEAN Enable;
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PKPRCB Prcb = KeGetCurrentPrcb();
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/* Check if we need to do anything */
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if ((PreviousMode != KernelMode) || (KdDebuggerNotPresent)) return;
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/* Enter the debugger */
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Enable = KdEnterDebugger(TrapFrame, ExceptionFrame);
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/* Save the CPU Control State and save the context */
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KiSaveProcessorControlState(&Prcb->ProcessorState);
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RtlCopyMemory(&Prcb->ProcessorState.ContextFrame,
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ContextRecord,
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sizeof(CONTEXT));
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/* Report the new state */
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KdpReportLoadSymbolsStateChange(DllPath,
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SymbolInfo,
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Unload,
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&Prcb->ProcessorState.ContextFrame);
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/* Restore the processor state */
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RtlCopyMemory(ContextRecord,
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&Prcb->ProcessorState.ContextFrame,
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sizeof(CONTEXT));
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KiRestoreProcessorControlState(&Prcb->ProcessorState);
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/* Exit the debugger and return */
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KdExitDebugger(Enable);
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}
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USHORT
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NTAPI
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KdpPrompt(IN LPSTR PromptString,
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IN USHORT PromptLength,
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OUT LPSTR ResponseString,
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IN USHORT MaximumResponseLength,
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IN KPROCESSOR_MODE PreviousMode,
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IN PKTRAP_FRAME TrapFrame,
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IN PKEXCEPTION_FRAME ExceptionFrame)
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{
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STRING PromptBuffer, ResponseBuffer;
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BOOLEAN Enable, Resend;
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/* Normalize the lengths */
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PromptLength = min(PromptLength, 512);
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MaximumResponseLength = min(MaximumResponseLength, 512);
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/* Check if we need to verify the string */
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if (PreviousMode != KernelMode)
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{
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/* FIXME: Handle user-mode */
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}
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/* Setup the prompt and response buffers */
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PromptBuffer.Buffer = PromptString;
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PromptBuffer.Length = PromptLength;
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ResponseBuffer.Buffer = ResponseString;
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ResponseBuffer.Length = 0;
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ResponseBuffer.MaximumLength = MaximumResponseLength;
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/* Log the print */
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//KdLogDbgPrint(&PromptBuffer);
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/* Enter the debugger */
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Enable = KdEnterDebugger(TrapFrame, ExceptionFrame);
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/* Enter prompt loop */
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do
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{
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/* Send the prompt and receive the response */
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Resend = KdpPromptString(&PromptBuffer, &ResponseBuffer);
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/* Loop while we need to resend */
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} while (Resend);
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/* Exit the debugger */
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KdExitDebugger(Enable);
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/* Return the number of characters received */
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return ResponseBuffer.Length;
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}
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NTSTATUS
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NTAPI
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KdpPrint(IN ULONG ComponentId,
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IN ULONG Level,
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IN LPSTR String,
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IN USHORT Length,
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IN KPROCESSOR_MODE PreviousMode,
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IN PKTRAP_FRAME TrapFrame,
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IN PKEXCEPTION_FRAME ExceptionFrame,
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OUT PBOOLEAN Handled)
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{
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NTSTATUS ReturnStatus;
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BOOLEAN Enable;
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STRING OutputString;
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/* Assume failure */
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*Handled = FALSE;
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/* Validate the mask */
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if (Level < 32) Level = 1 << Level;
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if (!(Kd_WIN2000_Mask & Level) ||
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((ComponentId < KdComponentTableSize) &&
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!(*KdComponentTable[ComponentId] & Level)))
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{
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/* Mask validation failed */
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*Handled = TRUE;
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return STATUS_SUCCESS;
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}
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/* Normalize the length */
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Length = min(Length, 512);
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/* Check if we need to verify the buffer */
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if (PreviousMode != KernelMode)
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{
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/* FIXME: Support user-mode */
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}
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/* Setup the output string */
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OutputString.Buffer = String;
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OutputString.Length = Length;
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/* Log the print */
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//KdLogDbgPrint(&OutputString);
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/* Check for a debugger */
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if (KdDebuggerNotPresent)
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{
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/* Fail */
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*Handled = TRUE;
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return STATUS_DEVICE_NOT_CONNECTED;
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}
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/* Enter the debugger */
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Enable = KdEnterDebugger(TrapFrame, ExceptionFrame);
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/* Print the string */
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if (KdpPrintString(&OutputString))
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{
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/* User pressed CTRL-C, breakpoint on return */
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ReturnStatus = STATUS_BREAKPOINT;
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}
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else
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{
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/* String was printed */
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ReturnStatus = STATUS_SUCCESS;
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}
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/* Exit the debugger and return */
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KdExitDebugger(Enable);
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*Handled = TRUE;
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return ReturnStatus;
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}
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VOID
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__cdecl
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KdpDprintf(IN PCHAR Format,
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...)
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{
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STRING String;
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CHAR Buffer[100];
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USHORT Length;
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va_list ap;
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/* Format the string */
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va_start(ap, Format);
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Length = (USHORT)_vsnprintf(Buffer,
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sizeof(Buffer),
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Format,
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ap);
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/* Set it up */
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String.Buffer = Buffer;
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String.Length = Length + 1;
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/* Send it to the debugger directly */
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KdpPrintString(&String);
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va_end(ap);
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}
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