mirror of
https://github.com/reactos/reactos.git
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Fix NtGetContextThread() and implement NtSetContextThread()
svn path=/trunk/; revision=4872
This commit is contained in:
Gé van Geldorp
parent
32f2d198df
commit
472ebde7ec
2 changed files with 218 additions and 91 deletions
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: irq.c,v 1.30 2003/06/07 10:14:40 chorns Exp $
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/* $Id: irq.c,v 1.31 2003/06/07 19:13:43 gvg Exp $
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*
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/ke/i386/irq.c
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@ -270,14 +270,12 @@ typedef struct _KIRQ_TRAPFRAME
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ULONG Eflags;
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} KIRQ_TRAPFRAME, *PKIRQ_TRAPFRAME;
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#ifdef DBG
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VOID
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KeIRQTrapFrameToTrapFrame(PKIRQ_TRAPFRAME IrqTrapFrame,
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PKTRAP_FRAME TrapFrame)
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{
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TrapFrame->Fs = IrqTrapFrame->Fs;
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TrapFrame->Fs = IrqTrapFrame->Es;
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TrapFrame->Es = IrqTrapFrame->Es;
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TrapFrame->Ds = IrqTrapFrame->Ds;
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TrapFrame->Eax = IrqTrapFrame->Eax;
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TrapFrame->Ecx = IrqTrapFrame->Ecx;
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@ -292,7 +290,25 @@ KeIRQTrapFrameToTrapFrame(PKIRQ_TRAPFRAME IrqTrapFrame,
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TrapFrame->Eflags = IrqTrapFrame->Eflags;
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}
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#endif
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VOID
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KeTrapFrameToIRQTrapFrame(PKTRAP_FRAME TrapFrame,
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PKIRQ_TRAPFRAME IrqTrapFrame)
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{
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IrqTrapFrame->Fs = TrapFrame->Fs;
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IrqTrapFrame->Es = TrapFrame->Es;
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IrqTrapFrame->Ds = TrapFrame->Ds;
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IrqTrapFrame->Eax = TrapFrame->Eax;
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IrqTrapFrame->Ecx = TrapFrame->Ecx;
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IrqTrapFrame->Edx = TrapFrame->Edx;
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IrqTrapFrame->Ebx = TrapFrame->Ebx;
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IrqTrapFrame->Esp = TrapFrame->Esp;
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IrqTrapFrame->Ebp = TrapFrame->Ebp;
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IrqTrapFrame->Esi = TrapFrame->Esi;
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IrqTrapFrame->Edi = TrapFrame->Edi;
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IrqTrapFrame->Eip = TrapFrame->Eip;
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IrqTrapFrame->Cs = TrapFrame->Cs;
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IrqTrapFrame->Eflags = TrapFrame->Eflags;
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}
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#ifdef MP
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@ -449,6 +465,17 @@ KiInterruptDispatch (ULONG irq, PKIRQ_TRAPFRAME Trapframe)
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*/
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{
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KIRQL old_level;
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KTRAP_FRAME KernelTrapFrame;
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PKTHREAD CurrentThread;
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PKTRAP_FRAME OldTrapFrame;
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CurrentThread = KeGetCurrentThread();
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if (NULL != CurrentThread && NULL == CurrentThread->TrapFrame)
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{
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OldTrapFrame = CurrentThread->TrapFrame;
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KeIRQTrapFrameToTrapFrame(Trapframe, &KernelTrapFrame);
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CurrentThread->TrapFrame = &KernelTrapFrame;
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}
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/*
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* At this point we have interrupts disabled, nothing has been done to
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@ -498,6 +525,13 @@ KiInterruptDispatch (ULONG irq, PKIRQ_TRAPFRAME Trapframe)
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*/
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__asm__("cli\n\t");
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HalEndSystemInterrupt (old_level, 0);
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assert(KeGetCurrentThread() == CurrentThread);
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if (NULL != CurrentThread && CurrentThread->TrapFrame == &KernelTrapFrame)
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{
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KeTrapFrameToIRQTrapFrame(&KernelTrapFrame, Trapframe);
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CurrentThread->TrapFrame = OldTrapFrame;
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}
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}
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#endif /* MP */
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@ -17,7 +17,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: debug.c,v 1.8 2003/06/05 23:36:35 gdalsnes Exp $
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/* $Id: debug.c,v 1.9 2003/06/07 19:13:43 gvg Exp $
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*
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/ps/debug.c
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@ -44,6 +44,7 @@
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#include <string.h>
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#include <internal/ps.h>
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#include <internal/ob.h>
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#include <internal/safe.h>
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#define NDEBUG
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#include <internal/debug.h>
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@ -157,15 +158,15 @@ KeTrapFrameToContext(PKTRAP_FRAME TrapFrame,
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}
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VOID STDCALL
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KeGetContextRundownRoutine(PKAPC Apc)
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KeGetSetContextRundownRoutine(PKAPC Apc)
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{
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PKEVENT Event;
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PNTSTATUS Status;
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Event = (PKEVENT)Apc->SystemArgument1;
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Status = (PNTSTATUS)Apc->SystemArgument2;
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(*Status) = STATUS_THREAD_IS_TERMINATING;
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KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
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PKEVENT Event;
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PNTSTATUS Status;
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Event = (PKEVENT)Apc->SystemArgument1;
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Status = (PNTSTATUS)Apc->SystemArgument2;
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(*Status) = STATUS_THREAD_IS_TERMINATING;
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KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
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}
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VOID STDCALL
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@ -179,97 +180,189 @@ KeGetContextKernelRoutine(PKAPC Apc,
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* copy the context of a thread into a buffer.
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*/
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{
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PKEVENT Event;
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PCONTEXT Context;
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PNTSTATUS Status;
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PKEVENT Event;
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PCONTEXT Context;
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PNTSTATUS Status;
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Context = (PCONTEXT)(*NormalContext);
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Event = (PKEVENT)(*SystemArgument1);
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Status = (PNTSTATUS)(*SystemArgument2);
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Context = (PCONTEXT)(*NormalContext);
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Event = (PKEVENT)(*SystemArgument1);
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Status = (PNTSTATUS)(*SystemArgument2);
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KeTrapFrameToContext(KeGetCurrentThread()->TrapFrame, Context);
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KeTrapFrameToContext(KeGetCurrentThread()->TrapFrame, Context);
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*Status = STATUS_SUCCESS;
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KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
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*Status = STATUS_SUCCESS;
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KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
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}
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NTSTATUS STDCALL
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NtGetContextThread(IN HANDLE ThreadHandle,
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OUT PCONTEXT Context)
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OUT PCONTEXT UnsafeContext)
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{
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PETHREAD Thread;
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NTSTATUS Status;
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PETHREAD Thread;
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NTSTATUS Status;
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CONTEXT Context;
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KAPC Apc;
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KEVENT Event;
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NTSTATUS AStatus;
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Status = MmCopyFromCaller(&Context, UnsafeContext, sizeof(CONTEXT));
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if (! NT_SUCCESS(Status))
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{
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return Status;
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}
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Status = ObReferenceObjectByHandle(ThreadHandle,
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THREAD_GET_CONTEXT,
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PsThreadType,
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UserMode,
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(PVOID*)&Thread,
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NULL);
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if (! NT_SUCCESS(Status))
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{
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return Status;
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}
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if (Thread == PsGetCurrentThread())
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{
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/*
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* I don't know if trying to get your own context makes much
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* sense but we can handle it more efficently.
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*/
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KeTrapFrameToContext(Thread->Tcb.TrapFrame, &Context);
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Status = STATUS_SUCCESS;
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}
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else
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{
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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AStatus = STATUS_SUCCESS;
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KeInitializeApc(&Apc,
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&Thread->Tcb,
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OriginalApcEnvironment,
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KeGetContextKernelRoutine,
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KeGetSetContextRundownRoutine,
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NULL,
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KernelMode,
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(PVOID)&Context);
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KeInsertQueueApc(&Apc,
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(PVOID)&Event,
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(PVOID)&AStatus,
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IO_NO_INCREMENT);
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Status = KeWaitForSingleObject(&Event,
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0,
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UserMode,
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FALSE,
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NULL);
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if (NT_SUCCESS(Status) && ! NT_SUCCESS(AStatus))
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{
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Status = AStatus;
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}
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}
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if (NT_SUCCESS(Status))
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{
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Status = MmCopyToCaller(UnsafeContext, &Context, sizeof(Context));
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}
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ObDereferenceObject(Thread);
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return Status;
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}
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VOID STDCALL
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KeSetContextKernelRoutine(PKAPC Apc,
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PKNORMAL_ROUTINE* NormalRoutine,
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PVOID* NormalContext,
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PVOID* SystemArgument1,
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PVOID* SystemArgument2)
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/*
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* FUNCTION: This routine is called by an APC sent by NtSetContextThread to
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* set the context of a thread from a buffer.
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*/
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{
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PKEVENT Event;
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PCONTEXT Context;
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PNTSTATUS Status;
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Status = ObReferenceObjectByHandle(ThreadHandle,
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THREAD_GET_CONTEXT,
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PsThreadType,
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UserMode,
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(PVOID*)&Thread,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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return(Status);
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}
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if (Thread == PsGetCurrentThread())
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{
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/*
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* I don't know if trying to get your own context makes much
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* sense but we can handle it more efficently.
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*/
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KeTrapFrameToContext(Thread->Tcb.TrapFrame, Context);
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ObDereferenceObject(Thread);
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return(STATUS_SUCCESS);
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}
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else
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{
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KAPC Apc;
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KEVENT Event;
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NTSTATUS AStatus;
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CONTEXT KContext;
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KContext.ContextFlags = Context->ContextFlags;
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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AStatus = STATUS_SUCCESS;
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KeInitializeApc(&Apc,
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&Thread->Tcb,
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OriginalApcEnvironment,
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KeGetContextKernelRoutine,
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KeGetContextRundownRoutine,
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NULL,
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KernelMode,
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(PVOID)&KContext);
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KeInsertQueueApc(&Apc,
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(PVOID)&Event,
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(PVOID)&AStatus,
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IO_NO_INCREMENT);
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Status = KeWaitForSingleObject(&Event,
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0,
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UserMode,
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FALSE,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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return(Status);
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}
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if (!NT_SUCCESS(AStatus))
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{
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return(AStatus);
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}
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memcpy(Context, &KContext, sizeof(CONTEXT));
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ObDereferenceObject(Thread);
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return(STATUS_SUCCESS);
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}
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Context = (PCONTEXT)(*NormalContext);
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Event = (PKEVENT)(*SystemArgument1);
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Status = (PNTSTATUS)(*SystemArgument2);
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KeContextToTrapFrame(Context, KeGetCurrentThread()->TrapFrame);
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*Status = STATUS_SUCCESS;
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KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
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}
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NTSTATUS STDCALL
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NtSetContextThread(IN HANDLE ThreadHandle,
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IN PCONTEXT Context)
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IN PCONTEXT UnsafeContext)
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{
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UNIMPLEMENTED;
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PETHREAD Thread;
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NTSTATUS Status;
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KAPC Apc;
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KEVENT Event;
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NTSTATUS AStatus;
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CONTEXT Context;
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Status = MmCopyFromCaller(&Context, UnsafeContext, sizeof(CONTEXT));
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if (! NT_SUCCESS(Status))
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{
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return Status;
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}
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Status = ObReferenceObjectByHandle(ThreadHandle,
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THREAD_SET_CONTEXT,
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PsThreadType,
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UserMode,
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(PVOID*)&Thread,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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if (Thread == PsGetCurrentThread())
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{
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/*
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* I don't know if trying to set your own context makes much
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* sense but we can handle it more efficently.
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*/
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KeContextToTrapFrame(&Context, Thread->Tcb.TrapFrame);
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Status = STATUS_SUCCESS;
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}
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else
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{
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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AStatus = STATUS_SUCCESS;
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KeInitializeApc(&Apc,
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&Thread->Tcb,
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OriginalApcEnvironment,
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KeSetContextKernelRoutine,
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KeGetSetContextRundownRoutine,
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NULL,
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KernelMode,
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(PVOID)&Context);
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KeInsertQueueApc(&Apc,
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(PVOID)&Event,
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(PVOID)&AStatus,
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IO_NO_INCREMENT);
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Status = KeWaitForSingleObject(&Event,
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0,
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UserMode,
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FALSE,
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NULL);
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if (NT_SUCCESS(Status) && ! NT_SUCCESS(AStatus))
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{
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Status = AStatus;
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}
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}
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ObDereferenceObject(Thread);
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return Status;
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}
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/* EOF */
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