/* FUNCTIONS *****************************************************************/
-_SEH_DEFINE_LOCALS(KiCopyInfo)
-{
- volatile EXCEPTION_RECORD SehExceptRecord;
-};
-
-_SEH_FILTER(KiCopyInformation)
-{
- _SEH_ACCESS_LOCALS(KiCopyInfo);
-
- /* Copy the exception records and return to the handler */
- RtlCopyMemory((PVOID)&_SEH_VAR(SehExceptRecord),
- _SEH_GetExceptionPointers()->ExceptionRecord,
- sizeof(EXCEPTION_RECORD));
- return EXCEPTION_EXECUTE_HANDLER;
-}
-
VOID
INIT_FUNCTION
NTAPI
extern KIDTENTRY KiIdt[MAXIMUM_IDTVECTOR];
/* Loop the IDT */
- for (i = 0; i <= MAXIMUM_IDTVECTOR; i ++)
+ for (i = 0; i <= MAXIMUM_IDTVECTOR; i++)
{
/* Save the current Selector */
FlippedSelector = KiIdt[i].Selector;
ULONG DebugMask = KeGetCurrentThread()->DispatcherHeader.DebugActive;
/* Check if debugging is enabled */
- if (DebugMask & DR_ACTIVE_MASK)
+ if (DebugMask & DR_MASK(DR7_OVERRIDE_V))
{
/* Sanity checks */
ASSERT((DebugMask & DR_REG_MASK) != 0);
/* Check if the caller gave us a mask */
if (!DrMask)
{
- /* He didn't use the one from the thread */
+ /* He didn't, use the one from the thread */
Mask = KeGetCurrentThread()->DispatcherHeader.DebugActive;
}
else
Result = FALSE;
/* Check the DR mask */
- NewMask &= 0x7F;
+ NewMask &= ~(DR_MASK(7));
if (NewMask & DR_REG_MASK)
{
/* Set the active mask */
- NewMask |= DR_ACTIVE_MASK;
+ NewMask |= DR_MASK(DR7_OVERRIDE_V);
/* Set DR7 override */
- *DrMask = DR7_OVERRIDE_MASK;
+ *Dr7Ptr |= DR7_OVERRIDE_MASK;
}
else
{
Result = NewMask ? TRUE: FALSE;
/* Update the mask to disable debugging */
- NewMask &= ~DR_ACTIVE_MASK;
- NewMask |= 0x80;
+ NewMask &= ~(DR_MASK(DR7_OVERRIDE_V));
+ NewMask |= DR_MASK(7);
}
/* Check if caller wants the new mask */
if (Mask != NewMask)
{
/* Update it */
- KeGetCurrentThread()->DispatcherHeader.DebugActive = NewMask;
+ KeGetCurrentThread()->DispatcherHeader.DebugActive =
+ (BOOLEAN)NewMask;
}
}
KiEspToTrapFrame(IN PKTRAP_FRAME TrapFrame,
IN ULONG Esp)
{
- ULONG Previous = KiEspFromTrapFrame(TrapFrame);
+ KIRQL OldIrql;
+ ULONG Previous;
+
+ /* Raise to APC_LEVEL if needed */
+ OldIrql = KeGetCurrentIrql();
+ if (OldIrql < APC_LEVEL) KeRaiseIrql(APC_LEVEL, &OldIrql);
+
+ /* Get the old ESP */
+ Previous = KiEspFromTrapFrame(TrapFrame);
/* Check if this is user-mode or V86 */
- if ((TrapFrame->SegCs & MODE_MASK) || (TrapFrame->EFlags & EFLAGS_V86_MASK))
+ if ((TrapFrame->SegCs & MODE_MASK) ||
+ (TrapFrame->EFlags & EFLAGS_V86_MASK))
{
/* Write it directly */
TrapFrame->HardwareEsp = Esp;
else
{
/* Don't allow ESP to be lowered, this is illegal */
- if (Esp < Previous) KeBugCheck(SET_OF_INVALID_CONTEXT);
+ if (Esp < Previous) KeBugCheckEx(SET_OF_INVALID_CONTEXT,
+ Esp,
+ Previous,
+ (ULONG_PTR)TrapFrame,
+ 0);
/* Create an edit frame, check if it was alrady */
if (!(TrapFrame->SegCs & FRAME_EDITED))
}
}
}
+
+ /* Restore IRQL */
+ if (OldIrql < APC_LEVEL) KeLowerIrql(OldIrql);
}
ULONG
NTAPI
KiSsFromTrapFrame(IN PKTRAP_FRAME TrapFrame)
{
- /* If this was V86 Mode */
+ /* Check if this was V86 Mode */
if (TrapFrame->EFlags & EFLAGS_V86_MASK)
{
/* Just return it */
}
else if (TrapFrame->SegCs & MODE_MASK)
{
- /* Usermode, return the User SS */
+ /* User mode, return the User SS */
return TrapFrame->HardwareSegSs | RPL_MASK;
}
else
NTAPI
KiTagWordFnsaveToFxsave(USHORT TagWord)
{
- INT FxTagWord = ~TagWord;
+ INT FxTagWord = ~TagWord;
- /*
+ /*
* Empty is now 00, any 2 bits containing 1 mean valid
* Now convert the rest (11->0 and the rest to 1)
*/
PFX_SAVE_AREA FxSaveArea;
ULONG i;
BOOLEAN V86Switch = FALSE;
- KIRQL OldIrql = APC_LEVEL;
+ KIRQL OldIrql;
ULONG DrMask = 0;
PVOID SafeDr;
/* Do this at APC_LEVEL */
- if (KeGetCurrentIrql() < APC_LEVEL) KeRaiseIrql(APC_LEVEL, &OldIrql);
+ OldIrql = KeGetCurrentIrql();
+ if (OldIrql < APC_LEVEL) KeRaiseIrql(APC_LEVEL, &OldIrql);
/* Start with the basic Registers */
if ((ContextFlags & CONTEXT_CONTROL) == CONTEXT_CONTROL)
MAXIMUM_SUPPORTED_EXTENSION);
/* Remove reserved bits from MXCSR */
- FxSaveArea->U.FxArea.MXCsr &= ~0xFFBF;
+ FxSaveArea->U.FxArea.MXCsr &= KiMXCsrMask;
/* Mask out any invalid flags */
FxSaveArea->Cr0NpxState &= ~(CR0_EM | CR0_MP | CR0_TS);
else
{
/* FIXME: Handle FPU Emulation */
- ASSERT(FALSE);
+ //ASSERT(FALSE);
}
}
/* If we're in user-mode */
if (PreviousMode != KernelMode)
{
- /* FIXME: Save the mask */
- //KeGetCurrentThread()->DispatcherHeader.DebugActive = DrMask;
+ /* Save the mask */
+ KeGetCurrentThread()->DispatcherHeader.DebugActive = DrMask;
}
}
/* Check if thread has IOPL and force it enabled if so */
- if (KeGetCurrentThread()->Iopl) TrapFrame->EFlags |= 0x3000;
+ if (KeGetCurrentThread()->Iopl) TrapFrame->EFlags |= EFLAGS_IOPL;
/* Restore IRQL */
if (OldIrql < APC_LEVEL) KeLowerIrql(OldIrql);
FLOATING_SAVE_AREA UnalignedArea;
} FloatSaveBuffer;
FLOATING_SAVE_AREA *FloatSaveArea;
- KIRQL OldIrql = APC_LEVEL;
+ KIRQL OldIrql;
ULONG i;
/* Do this at APC_LEVEL */
- if (KeGetCurrentIrql() < APC_LEVEL) KeRaiseIrql(APC_LEVEL, &OldIrql);
+ OldIrql = KeGetCurrentIrql();
+ if (OldIrql < APC_LEVEL) KeRaiseIrql(APC_LEVEL, &OldIrql);
/* Start with the Control flags */
if ((Context->ContextFlags & CONTEXT_CONTROL) == CONTEXT_CONTROL)
Context->Dr6 = TrapFrame->Dr6;
/* Update DR7 */
- //Context->Dr7 = KiUpdateDr7(TrapFrame->Dr7);
+ Context->Dr7 = KiUpdateDr7(TrapFrame->Dr7);
}
else
{
if (OldIrql < APC_LEVEL) KeLowerIrql(OldIrql);
}
+BOOLEAN
+FASTCALL
+KeInvalidAccessAllowed(IN PVOID TrapInformation OPTIONAL)
+{
+ ULONG Eip;
+ PKTRAP_FRAME TrapFrame = TrapInformation;
+ VOID NTAPI ExpInterlockedPopEntrySListFault(VOID);
+
+ /* Don't do anything if we didn't get a trap frame */
+ if (!TrapInformation) return FALSE;
+
+ /* Check where we came from */
+ switch (TrapFrame->SegCs)
+ {
+ /* Kernel mode */
+ case KGDT_R0_CODE:
+
+ /* Allow S-LIST Routine to fail */
+ Eip = (ULONG)&ExpInterlockedPopEntrySListFault;
+ break;
+
+ /* User code */
+ case KGDT_R3_CODE | RPL_MASK:
+
+ /* Allow S-LIST Routine to fail */
+ //Eip = (ULONG)KeUserPopEntrySListFault;
+ Eip = 0;
+ break;
+
+ default:
+
+ /* Anything else gets a bugcheck */
+ Eip = 0;
+ }
+
+ /* Return TRUE if we want to keep the system up */
+ return (TrapFrame->Eip == Eip) ? TRUE : FALSE;
+}
+
VOID
NTAPI
KiDispatchException(IN PEXCEPTION_RECORD ExceptionRecord,
IN BOOLEAN FirstChance)
{
CONTEXT Context;
- ULONG_PTR Stack, NewStack;
- ULONG Size;
EXCEPTION_RECORD LocalExceptRecord;
- _SEH_DECLARE_LOCALS(KiCopyInfo);
/* Increase number of Exception Dispatches */
KeGetCurrentPrcb()->KeExceptionDispatchCount++;
/* Set the context flags */
Context.ContextFlags = CONTEXT_FULL | CONTEXT_DEBUG_REGISTERS;
- /* Check if User Mode or if the debugger isenabled */
+ /* Check if User Mode or if the debugger is enabled */
if ((PreviousMode == UserMode) || (KdDebuggerEnabled))
{
/* Add the FPU Flag */
/* Get a Context */
KeTrapFrameToContext(TrapFrame, ExceptionFrame, &Context);
- /* Fix up EIP */
- if (ExceptionRecord->ExceptionCode == STATUS_BREAKPOINT)
+ /* Look at our exception code */
+ switch (ExceptionRecord->ExceptionCode)
{
- /* Decrement EIP by one */
- Context.Eip--;
+ /* Breakpoint */
+ case STATUS_BREAKPOINT:
+
+ /* Decrement EIP by one */
+ Context.Eip--;
+ break;
+
+ /* Internal exception */
+ case KI_EXCEPTION_ACCESS_VIOLATION:
+
+ /* Set correct code */
+ ExceptionRecord->ExceptionCode = STATUS_ACCESS_VIOLATION;
+ if (PreviousMode == UserMode)
+ {
+ /* FIXME: Handle no execute */
+ }
+ break;
}
/* Sanity check */
goto Handled;
}
- /* HACK: GDB Entry */
- if (KdpCallGdb(TrapFrame, ExceptionRecord, &Context)) goto Handled;
-
/* If the Debugger couldn't handle it, dispatch the exception */
if (RtlDispatchException(ExceptionRecord, &Context)) goto Handled;
}
KeBugCheckEx(KMODE_EXCEPTION_NOT_HANDLED,
ExceptionRecord->ExceptionCode,
(ULONG_PTR)ExceptionRecord->ExceptionAddress,
- ExceptionRecord->ExceptionInformation[0],
- ExceptionRecord->ExceptionInformation[1]);
+ (ULONG_PTR)TrapFrame,
+ 0);
}
else
{
/* User mode exception, was it first-chance? */
if (FirstChance)
{
- /* Enter Debugger if available */
- if (PsGetCurrentProcess()->DebugPort)
+ /* Make sure a debugger is present, and ignore user-mode if requested */
+ if ((KiDebugRoutine) &&
+ (!(PsGetCurrentProcess()->DebugPort)))
{
- /* FIXME : TODO */
- //KEBUGCHECK(0);
- }
- else if (KiDebugRoutine(TrapFrame,
- ExceptionFrame,
- ExceptionRecord,
- &Context,
- PreviousMode,
- FALSE))
- {
- /* Exception was handled */
- goto Handled;
+ /* Call the debugger */
+ if (KiDebugRoutine(TrapFrame,
+ ExceptionFrame,
+ ExceptionRecord,
+ &Context,
+ PreviousMode,
+ FALSE))
+ {
+ /* Exception was handled */
+ goto Handled;
+ }
}
- /* HACK: GDB Entry */
- if (KdpCallGdb(TrapFrame, ExceptionRecord, &Context)) goto Handled;
-
/* Forward exception to user mode debugger */
if (DbgkForwardException(ExceptionRecord, TRUE, FALSE)) goto Exit;
/* Set up the user-stack */
DispatchToUser:
- _SEH_TRY
+ _SEH2_TRY
{
+ ULONG Size;
+ ULONG_PTR Stack, NewStack;
+
/* Make sure we have a valid SS and that this isn't V86 mode */
if ((TrapFrame->HardwareSegSs != (KGDT_R3_DATA | RPL_MASK)) ||
(TrapFrame->EFlags & EFLAGS_V86_MASK))
TrapFrame->SegCs = Ke386SanitizeSeg(KGDT_R3_CODE, PreviousMode);
TrapFrame->SegDs = Ke386SanitizeSeg(KGDT_R3_DATA, PreviousMode);
TrapFrame->SegEs = Ke386SanitizeSeg(KGDT_R3_DATA, PreviousMode);
- TrapFrame->SegFs = Ke386SanitizeSeg(KGDT_R3_TEB, PreviousMode);
+ TrapFrame->SegFs = Ke386SanitizeSeg(KGDT_R3_TEB, PreviousMode);
TrapFrame->SegGs = 0;
/* Set EIP to the User-mode Dispatcher */
TrapFrame->Eip = (ULONG)KeUserExceptionDispatcher;
- _SEH_LEAVE;
+
+ /* Dispatch exception to user-mode */
+ _SEH2_YIELD(return);
}
- _SEH_EXCEPT(KiCopyInformation)
+ _SEH2_EXCEPT((RtlCopyMemory(&LocalExceptRecord, _SEH2_GetExceptionInformation()->ExceptionRecord, sizeof(EXCEPTION_RECORD)), EXCEPTION_EXECUTE_HANDLER))
{
/* Check if we got a stack overflow and raise that instead */
- if (_SEH_VAR(SehExceptRecord).ExceptionCode ==
+ if ((NTSTATUS)LocalExceptRecord.ExceptionCode ==
STATUS_STACK_OVERFLOW)
{
/* Copy the exception address and record */
- _SEH_VAR(SehExceptRecord).ExceptionAddress =
+ LocalExceptRecord.ExceptionAddress =
ExceptionRecord->ExceptionAddress;
RtlCopyMemory(ExceptionRecord,
- (PVOID)&_SEH_VAR(SehExceptRecord),
+ (PVOID)&LocalExceptRecord,
sizeof(EXCEPTION_RECORD));
/* Do the exception again */
- goto DispatchToUser;
+ _SEH2_YIELD(goto DispatchToUser);
}
}
- _SEH_END;
-
- /* Dispatch exception to user-mode */
- return;
+ _SEH2_END;
}
/* Try second chance */
- if (DbgkForwardException(ExceptionRecord, TRUE, FALSE))
+ if (DbgkForwardException(ExceptionRecord, TRUE, TRUE))
{
/* Handled, get out */
goto Exit;
}
/* 3rd strike, kill the process */
+ DPRINT1("Kill %.16s, ExceptionCode: %lx, ExceptionAddress: %lx\n",
+ PsGetCurrentProcess()->ImageFileName,
+ ExceptionRecord->ExceptionCode,
+ ExceptionRecord->ExceptionAddress);
+
ZwTerminateProcess(NtCurrentProcess(), ExceptionRecord->ExceptionCode);
KeBugCheckEx(KMODE_EXCEPTION_NOT_HANDLED,
ExceptionRecord->ExceptionCode,
(ULONG_PTR)ExceptionRecord->ExceptionAddress,
- ExceptionRecord->ExceptionInformation[0],
- ExceptionRecord->ExceptionInformation[1]);
+ (ULONG_PTR)TrapFrame,
+ 0);
}
Handled:
NTAPI
KeRaiseUserException(IN NTSTATUS ExceptionCode)
{
- NTSTATUS Status = STATUS_SUCCESS;
ULONG OldEip;
PTEB Teb = KeGetCurrentThread()->Teb;
PKTRAP_FRAME TrapFrame = KeGetCurrentThread()->TrapFrame;
/* Make sure we can access the TEB */
- _SEH_TRY
+ _SEH2_TRY
{
/* Set the exception code */
Teb->ExceptionCode = ExceptionCode;
}
- _SEH_HANDLE
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- /* Save exception code */
- Status = ExceptionCode;
+ /* Return the exception code */
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
}
- _SEH_END;
- if (!NT_SUCCESS(Status)) return Status;
+ _SEH2_END;
/* Get the old EIP */
OldEip = TrapFrame->Eip;
/* Return the old EIP */
return (NTSTATUS)OldEip;
}
-
projects / reactos.git / blobdiff