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f84d5a02f4
- Re-enable the breakpoint in vDbgPrintExWithPrefixInternal() as this works properly now. Without this breakpoint some break-in requests got lost if the break-in occurred when handling a debug print (happened a lot at boot). - Implement Command String support for DbgCommandString() -- we now handle every debug service call. - Implement NtSetDebugFilterState() and NtQueryDebugFilterState() for KD, meaning we now support debug filters properly. - Implement KdRefreshDebuggerNotPresent(), KdChangeOption() and KdPowerTransition(). Stub KdSystemDebugControl() to return error status instead of hanging the system. - Stub the rest of the KD API to print a warning and return a failure packet instead of hanging. - Set and respect KdpContextSent when getting and setting the thread context -- WinDbg doesn't seem to rely on this, but better safe than sorry. - Support MP when getting and setting the thread context too -- if the context is operation is for another processor than the current, just get it through the KiProcessorBlock array. - Initialize the MajorVersion in the KD version block more properly -- the high byte is the major identifier (0 for NT). Add the required DBGKD_MAJOR_TYPES enumeration to wdbgexts.h. - Simplify setting and clearing the InDbgPrint flag in the TEB to minimize the impact on kernel execution; use 2 dedicated routines instead of a generic one. - KdpSymbol doesn't return anything, so don't return an ignore status from KdpReportLoadSymbolsStateChange. - Expose the KdpDefaultRetries and Kd_WIN2000_Mask variables to the registry and add them to KDBG too (unused there). - No reason to implement KdpSysGetVersion per architecture; move it back to the generic code. - Add some ARM offsets to the debugger data block that (N/A on other architectures). - Fix the default size of the DbgPrint log buffer for free builds to save some space. It should be 4 KB for a free build and 32 KB for a checked build. - Move KeDisableInterrupts to cpu.c as it fits here more than in the IRQ support code in irqobj.c. - Use KeDisableInterrupts in KeFreezeExecution instead of checking the x86 EFLAG directly. svn path=/trunk/; revision=43912
122 lines
3.0 KiB
C
122 lines
3.0 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/kdlock.c
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* PURPOSE: KD64 Port Lock and Breakin Support
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@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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/* PRIVATE FUNCTIONS *********************************************************/
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VOID
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NTAPI
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KdpPortLock(VOID)
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{
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/* Acquire the lock */
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KiAcquireSpinLock(&KdpDebuggerLock);
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}
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VOID
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NTAPI
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KdpPortUnlock(VOID)
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{
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/* Release the lock */
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KiReleaseSpinLock(&KdpDebuggerLock);
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}
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BOOLEAN
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NTAPI
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KdpPollBreakInWithPortLock(VOID)
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{
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BOOLEAN DoBreak = FALSE;
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/* First make sure that KD is enabled */
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if (KdDebuggerEnabled)
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{
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/* Check if a CTRL-C is in the queue */
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if (KdpContext.KdpControlCPending)
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{
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/* Set it and prepare for break */
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DoBreak = TRUE;
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KdpContext.KdpControlCPending = FALSE;
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}
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else
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{
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/* Now get a packet */
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if (KdReceivePacket(PACKET_TYPE_KD_POLL_BREAKIN,
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NULL,
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NULL,
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NULL,
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NULL) == KdPacketReceived)
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{
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/* Successful breakin */
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DoBreak = TRUE;
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}
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}
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}
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/* Tell the caller to do a break */
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return DoBreak;
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}
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/* PUBLIC FUNCTIONS **********************************************************/
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/*
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* @implemented
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*/
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BOOLEAN
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NTAPI
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KdPollBreakIn(VOID)
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{
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BOOLEAN DoBreak = FALSE, Enable;
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/* First make sure that KD is enabled */
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if (KdDebuggerEnabled)
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{
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/* Disable interrupts */
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Enable = KeDisableInterrupts();
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/* Check if a CTRL-C is in the queue */
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if (KdpContext.KdpControlCPending)
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{
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/* Set it and prepare for break */
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KdpControlCPressed = TRUE;
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DoBreak = TRUE;
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KdpContext.KdpControlCPending = FALSE;
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}
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else
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{
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/* Try to acquire the lock */
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if (KeTryToAcquireSpinLockAtDpcLevel(&KdpDebuggerLock))
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{
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/* Now get a packet */
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if (KdReceivePacket(PACKET_TYPE_KD_POLL_BREAKIN,
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NULL,
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NULL,
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NULL,
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NULL) == KdPacketReceived)
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{
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/* Successful breakin */
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DoBreak = TRUE;
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KdpControlCPressed = TRUE;
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}
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/* Let go of the port */
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KdpPortUnlock();
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}
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}
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/* Re-enable interrupts if they were enabled previously */
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if (Enable) _enable();
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}
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/* Tell the caller to do a break */
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return DoBreak;
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}
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