mirror of
https://github.com/reactos/reactos.git
synced 2024-10-30 03:27:31 +00:00
403 lines
12 KiB
C
403 lines
12 KiB
C
/*
|
|
* PROJECT: ReactOS Kernel
|
|
* LICENSE: GPL - See COPYING in the top level directory
|
|
* FILE: ntoskrnl/ps/debug.c
|
|
* PURPOSE: Process Manager: Debugging Support (Set/Get Context)
|
|
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
|
* Thomas Weidenmueller (w3seek@reactos.org)
|
|
*/
|
|
|
|
/* INCLUDES ****************************************************************/
|
|
|
|
#include <ntoskrnl.h>
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* PRIVATE FUNCTIONS *********************************************************/
|
|
|
|
#if DBG
|
|
VOID
|
|
NTAPI
|
|
PspDumpThreads(BOOLEAN IncludeSystem)
|
|
{
|
|
PLIST_ENTRY CurrentThread, CurrentProcess;
|
|
PEPROCESS Process;
|
|
PETHREAD Thread;
|
|
ULONG nThreads = 0;
|
|
|
|
/* Loop all Active Processes */
|
|
CurrentProcess = PsActiveProcessHead.Flink;
|
|
while(CurrentProcess != &PsActiveProcessHead)
|
|
{
|
|
/* Get the process */
|
|
Process = CONTAINING_RECORD(CurrentProcess, EPROCESS, ActiveProcessLinks);
|
|
|
|
/* Skip the Initial Process if requested */
|
|
if((Process != PsInitialSystemProcess) ||
|
|
(Process == PsInitialSystemProcess && IncludeSystem))
|
|
{
|
|
/* Loop all its threads */
|
|
CurrentThread = Process->ThreadListHead.Flink;
|
|
while(CurrentThread != &Process->ThreadListHead)
|
|
{
|
|
|
|
/* Get teh Thread */
|
|
Thread = CONTAINING_RECORD(CurrentThread, ETHREAD, ThreadListEntry);
|
|
nThreads++;
|
|
|
|
/* Print the Info */
|
|
DbgPrint("State %d Affinity %08x Priority %d PID.TID %d.%d Name %.8s Stack: \n",
|
|
Thread->Tcb.State,
|
|
Thread->Tcb.Affinity,
|
|
Thread->Tcb.Priority,
|
|
Thread->Cid.UniqueProcess,
|
|
Thread->Cid.UniqueThread,
|
|
Thread->ThreadsProcess->ImageFileName);
|
|
|
|
/* Make sure it's not running */
|
|
if(Thread->Tcb.State == Ready ||
|
|
Thread->Tcb.State == Standby ||
|
|
Thread->Tcb.State == Waiting)
|
|
{
|
|
ULONG i = 0;
|
|
PULONG Esp = (PULONG)Thread->Tcb.KernelStack;
|
|
PULONG Ebp = (PULONG)Esp[4];
|
|
|
|
/* Print EBP */
|
|
DbgPrint("Ebp 0x%.8X\n", Ebp);
|
|
|
|
/* Walk it */
|
|
while(Ebp != 0 && Ebp >= (PULONG)Thread->Tcb.StackLimit)
|
|
{
|
|
/* Print what's on the stack */
|
|
DbgPrint("%.8X %.8X%s", Ebp[0], Ebp[1], (i % 8) == 7 ? "\n" : " ");
|
|
Ebp = (PULONG)Ebp[0];
|
|
i++;
|
|
}
|
|
|
|
/* Print a new line if there's nothing */
|
|
if((i % 8) != 0) DbgPrint("\n");
|
|
}
|
|
|
|
/* Move to the next Thread */
|
|
CurrentThread = CurrentThread->Flink;
|
|
}
|
|
}
|
|
|
|
/* Move to the next Process */
|
|
CurrentProcess = CurrentProcess->Flink;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* PUBLIC FUNCTIONS **********************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
PsGetContextThread(IN PETHREAD Thread,
|
|
IN OUT PCONTEXT ThreadContext,
|
|
IN KPROCESSOR_MODE PreviousMode)
|
|
{
|
|
GET_SET_CTX_CONTEXT GetSetContext;
|
|
ULONG Size = 0, Flags = 0;
|
|
NTSTATUS Status;
|
|
|
|
/* Enter SEH */
|
|
_SEH2_TRY
|
|
{
|
|
/* Set default ength */
|
|
Size = sizeof(CONTEXT);
|
|
|
|
/* Read the flags */
|
|
Flags = ProbeForReadUlong(&ThreadContext->ContextFlags);
|
|
|
|
#ifdef _M_IX86
|
|
/* Check if the caller wanted extended registers */
|
|
if ((Flags & CONTEXT_EXTENDED_REGISTERS) !=
|
|
CONTEXT_EXTENDED_REGISTERS)
|
|
{
|
|
/* Cut them out of the size */
|
|
Size = FIELD_OFFSET(CONTEXT, ExtendedRegisters);
|
|
}
|
|
#endif
|
|
|
|
/* Check if we came from user mode */
|
|
if (PreviousMode != KernelMode)
|
|
{
|
|
/* Probe the context */
|
|
ProbeForWrite(ThreadContext, Size, sizeof(ULONG));
|
|
}
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
/* Return the exception code */
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
|
|
/* Initialize the wait event */
|
|
KeInitializeEvent(&GetSetContext.Event, NotificationEvent, FALSE);
|
|
|
|
/* Set the flags and previous mode */
|
|
GetSetContext.Context.ContextFlags = Flags;
|
|
GetSetContext.Mode = PreviousMode;
|
|
|
|
/* Check if we're running in the same thread */
|
|
if (Thread == PsGetCurrentThread())
|
|
{
|
|
/* Setup APC parameters manually */
|
|
GetSetContext.Apc.SystemArgument1 = NULL;
|
|
GetSetContext.Apc.SystemArgument2 = Thread;
|
|
|
|
/* Enter a guarded region to simulate APC_LEVEL */
|
|
KeEnterGuardedRegion();
|
|
|
|
/* Manually call the APC */
|
|
PspGetOrSetContextKernelRoutine(&GetSetContext.Apc,
|
|
NULL,
|
|
NULL,
|
|
&GetSetContext.Apc.SystemArgument1,
|
|
&GetSetContext.Apc.SystemArgument2);
|
|
|
|
/* Leave the guarded region */
|
|
KeLeaveGuardedRegion();
|
|
|
|
/* We are done */
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
/* Initialize the APC */
|
|
KeInitializeApc(&GetSetContext.Apc,
|
|
&Thread->Tcb,
|
|
OriginalApcEnvironment,
|
|
PspGetOrSetContextKernelRoutine,
|
|
NULL,
|
|
NULL,
|
|
KernelMode,
|
|
NULL);
|
|
|
|
/* Queue it as a Get APC */
|
|
if (!KeInsertQueueApc(&GetSetContext.Apc, NULL, Thread, 2))
|
|
{
|
|
/* It was already queued, so fail */
|
|
Status = STATUS_UNSUCCESSFUL;
|
|
}
|
|
else
|
|
{
|
|
/* Wait for the APC to complete */
|
|
Status = KeWaitForSingleObject(&GetSetContext.Event,
|
|
0,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL);
|
|
}
|
|
}
|
|
|
|
_SEH2_TRY
|
|
{
|
|
/* Copy the context */
|
|
RtlCopyMemory(ThreadContext, &GetSetContext.Context, Size);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
/* Get the exception code */
|
|
Status = _SEH2_GetExceptionCode();
|
|
}
|
|
_SEH2_END;
|
|
|
|
/* Return status */
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
PsSetContextThread(IN PETHREAD Thread,
|
|
IN OUT PCONTEXT ThreadContext,
|
|
IN KPROCESSOR_MODE PreviousMode)
|
|
{
|
|
GET_SET_CTX_CONTEXT GetSetContext;
|
|
ULONG Size = 0, Flags = 0;
|
|
NTSTATUS Status;
|
|
|
|
/* Enter SEH */
|
|
_SEH2_TRY
|
|
{
|
|
/* Set default length */
|
|
Size = sizeof(CONTEXT);
|
|
|
|
/* Read the flags */
|
|
Flags = ProbeForReadUlong(&ThreadContext->ContextFlags);
|
|
|
|
#ifdef _M_IX86
|
|
/* Check if the caller wanted extended registers */
|
|
if ((Flags & CONTEXT_EXTENDED_REGISTERS) !=
|
|
CONTEXT_EXTENDED_REGISTERS)
|
|
{
|
|
/* Cut them out of the size */
|
|
Size = FIELD_OFFSET(CONTEXT, ExtendedRegisters);
|
|
}
|
|
#endif
|
|
|
|
/* Check if we came from user mode */
|
|
if (PreviousMode != KernelMode)
|
|
{
|
|
/* Probe the context */
|
|
ProbeForRead(ThreadContext, Size, sizeof(ULONG));
|
|
}
|
|
|
|
/* Copy the context */
|
|
RtlCopyMemory(&GetSetContext.Context, ThreadContext, Size);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
/* Return the exception code */
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
|
|
/* Initialize the wait event */
|
|
KeInitializeEvent(&GetSetContext.Event, NotificationEvent, FALSE);
|
|
|
|
/* Set the flags and previous mode */
|
|
GetSetContext.Context.ContextFlags = Flags;
|
|
GetSetContext.Mode = PreviousMode;
|
|
|
|
/* Check if we're running in the same thread */
|
|
if (Thread == PsGetCurrentThread())
|
|
{
|
|
/* Setup APC parameters manually */
|
|
GetSetContext.Apc.SystemArgument1 = UlongToPtr(1);
|
|
GetSetContext.Apc.SystemArgument2 = Thread;
|
|
|
|
/* Enter a guarded region to simulate APC_LEVEL */
|
|
KeEnterGuardedRegion();
|
|
|
|
/* Manually call the APC */
|
|
PspGetOrSetContextKernelRoutine(&GetSetContext.Apc,
|
|
NULL,
|
|
NULL,
|
|
&GetSetContext.Apc.SystemArgument1,
|
|
&GetSetContext.Apc.SystemArgument2);
|
|
|
|
/* Leave the guarded region */
|
|
KeLeaveGuardedRegion();
|
|
|
|
/* We are done */
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
/* Initialize the APC */
|
|
KeInitializeApc(&GetSetContext.Apc,
|
|
&Thread->Tcb,
|
|
OriginalApcEnvironment,
|
|
PspGetOrSetContextKernelRoutine,
|
|
NULL,
|
|
NULL,
|
|
KernelMode,
|
|
NULL);
|
|
|
|
/* Queue it as a Get APC */
|
|
if (!KeInsertQueueApc(&GetSetContext.Apc, UlongToPtr(1), Thread, 2))
|
|
{
|
|
/* It was already queued, so fail */
|
|
Status = STATUS_UNSUCCESSFUL;
|
|
}
|
|
else
|
|
{
|
|
/* Wait for the APC to complete */
|
|
Status = KeWaitForSingleObject(&GetSetContext.Event,
|
|
0,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL);
|
|
}
|
|
}
|
|
|
|
/* Return status */
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
NtGetContextThread(IN HANDLE ThreadHandle,
|
|
IN OUT PCONTEXT ThreadContext)
|
|
{
|
|
PETHREAD Thread;
|
|
NTSTATUS Status;
|
|
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
|
|
PAGED_CODE();
|
|
|
|
/* Get the Thread Object */
|
|
Status = ObReferenceObjectByHandle(ThreadHandle,
|
|
THREAD_GET_CONTEXT,
|
|
PsThreadType,
|
|
PreviousMode,
|
|
(PVOID*)&Thread,
|
|
NULL);
|
|
|
|
if (!NT_SUCCESS(Status)) return Status;
|
|
|
|
/* Make sure it's not a system thread */
|
|
if (Thread->SystemThread)
|
|
{
|
|
/* Fail */
|
|
Status = STATUS_INVALID_HANDLE;
|
|
}
|
|
else
|
|
{
|
|
/* Call the kernel API */
|
|
Status = PsGetContextThread(Thread, ThreadContext, PreviousMode);
|
|
}
|
|
|
|
/* Dereference it and return */
|
|
ObDereferenceObject(Thread);
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
NtSetContextThread(IN HANDLE ThreadHandle,
|
|
IN PCONTEXT ThreadContext)
|
|
{
|
|
PETHREAD Thread;
|
|
NTSTATUS Status;
|
|
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
|
|
PAGED_CODE();
|
|
|
|
/* Get the Thread Object */
|
|
Status = ObReferenceObjectByHandle(ThreadHandle,
|
|
THREAD_SET_CONTEXT,
|
|
PsThreadType,
|
|
PreviousMode,
|
|
(PVOID*)&Thread,
|
|
NULL);
|
|
|
|
if (!NT_SUCCESS(Status)) return Status;
|
|
|
|
/* Make sure it's not a system thread */
|
|
if (Thread->SystemThread)
|
|
{
|
|
/* Fail */
|
|
Status = STATUS_INVALID_HANDLE;
|
|
}
|
|
else
|
|
{
|
|
/* Call the kernel API */
|
|
Status = PsSetContextThread(Thread, ThreadContext, PreviousMode);
|
|
}
|
|
|
|
/* Dereference it and return */
|
|
ObDereferenceObject(Thread);
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|