99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name:
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xxmpipi.c
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Abstract:
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This module implements MIPS specific MP routine.
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Author:
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David N. Cutler 24-Apr-1993
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Environment:
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Kernel mode only.
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--*/
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#include "ki.h"
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VOID KiRestoreProcessorState (IN PKTRAP_FRAME TrapFrame, IN PKEXCEPTION_FRAME ExceptionFrame)
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/*++
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Routine Description:
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This function moves processor register state from the current processor context structure in the processor block to the specified trap and exception frames.
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Arguments:
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TrapFrame - Supplies a pointer to a trap frame.
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ExceptionFrame - Supplies a pointer to an exception frame.
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--*/
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{
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PKPRCB Prcb;
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// Get the address of the current processor block and move the specified register state from the processor context structure to the specified trap and exception frames
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Prcb = KeGetCurrentPrcb();
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KeContextToKframes(TrapFrame, ExceptionFrame, &Prcb->ProcessorState.ContextFrame, CONTEXT_FULL, KernelMode);
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}
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VOID KiSaveProcessorState (IN PKTRAP_FRAME TrapFrame, IN PKEXCEPTION_FRAME ExceptionFrame)
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/*++
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Routine Description:
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This function moves processor register state from the specified trap and exception frames to the processor context structure in the current processor block.
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Arguments:
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TrapFrame - Supplies a pointer to a trap frame.
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ExceptionFrame - Supplies a pointer to an exception frame.
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--*/
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{
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PKPRCB Prcb;
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// Get the address of the current processor block and move the specified register state from specified trap and exception frames to the current processor context structure.
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Prcb = KeGetCurrentPrcb();
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Prcb->ProcessorState.ContextFrame.ContextFlags = CONTEXT_FULL;
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KeContextFromKframes(TrapFrame, ExceptionFrame, &Prcb->ProcessorState.ContextFrame);
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// Save the current processor control state.
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KiSaveProcessorControlState(&Prcb->ProcessorState);
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}
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VOID KiSaveProcessorControlState (IN PKPROCESSOR_STATE ProcessorState)
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/*++
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Routine Description:
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This routine saves the processor's control state for debugger.
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Arguments:
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ProcessorState (a0) - Supplies a pointer to the processor state.
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--*/
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{
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ULONG Index;
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// Read Tb entries and store in the processor state structure.
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for (Index = 0; Index < KeNumberTbEntries; Index += 1) {
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KiReadEntryTb(Index, &ProcessorState->TbEntry[Index]);
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}
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}
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BOOLEAN KiIpiServiceRoutine (IN PKTRAP_FRAME TrapFrame, IN PKEXCEPTION_FRAME ExceptionFrame)
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/*++
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Routine Description:
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This function is called at IPI_LEVEL to process any outstanding interprocess request for the current processor.
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Arguments:
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TrapFrame - Supplies a pointer to a trap frame.
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ExceptionFrame - Supplies a pointer to an exception frame
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Return Value:
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A value of TRUE is returned, if one of more requests were service.
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Otherwise, FALSE is returned.
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--*/
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{
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ULONG RequestSummary;
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// Process any outstanding interprocessor requests.
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RequestSummary = KiIpiProcessRequests();
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// If freeze is requested, then freeze target execution.
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if ((RequestSummary & IPI_FREEZE) != 0) {
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KiFreezeTargetExecution(TrapFrame, ExceptionFrame);
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}
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// Return whether any requests were processed.
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return (RequestSummary & ~IPI_FREEZE) != 0;
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} |