[sir_richard] 49781: [NTOS]: Some more ARM build and linker fixes, moving some of the new x86 C code into ARM. This should really be shared later. [NTOS]: Totally broke thread context switching on ...
Author: sir_richard Date: Wed Nov 24 17:49:52 2010 New Revision: 49781
URL: http://svn.reactos.org/svn/reactos?rev=49781&view=rev Log: [NTOS]: Some more ARM build and linker fixes, moving some of the new x86 C code into ARM. This should really be shared later. [NTOS]: Totally broke thread context switching on ARM for now. It's a Good Thing.
Modified: trunk/reactos/ntoskrnl/ke/arm/cpu.c trunk/reactos/ntoskrnl/ke/arm/ctxswtch.s trunk/reactos/ntoskrnl/ke/arm/thrdini.c trunk/reactos/ntoskrnl/ntoskrnl.pspec
Modified: trunk/reactos/ntoskrnl/ke/arm/cpu.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/arm/cpu.c?rev=4... ============================================================================== --- trunk/reactos/ntoskrnl/ke/arm/cpu.c [iso-8859-1] (original) +++ trunk/reactos/ntoskrnl/ke/arm/cpu.c [iso-8859-1] Wed Nov 24 17:49:52 2010 @@ -58,6 +58,15 @@ }
VOID +FASTCALL +KeZeroPages(IN PVOID Address, + IN ULONG Size) +{ + /* Not using XMMI in this routine */ + RtlZeroMemory(Address, Size); +} + +VOID NTAPI KiSaveProcessorControlState(OUT PKPROCESSOR_STATE ProcessorState) {
Modified: trunk/reactos/ntoskrnl/ke/arm/ctxswtch.s URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/arm/ctxswtch.s?... ============================================================================== --- trunk/reactos/ntoskrnl/ke/arm/ctxswtch.s [iso-8859-1] (original) +++ trunk/reactos/ntoskrnl/ke/arm/ctxswtch.s [iso-8859-1] Wed Nov 24 17:49:52 2010 @@ -13,6 +13,10 @@ TEXTAREA NESTED_ENTRY KiSwapContext PROLOG_END KiSwapContext + + // BUSTEDDDD + b . + // // a1 = Old Thread // a2 = New Thread @@ -104,3 +108,19 @@ b .
ENTRY_END KiThreadStartup + + NESTED_ENTRY KiSwitchThreads + PROLOG_END KiSwitchThreads + + // BUSTEDDDD + b . + + ENTRY_END KiSwitchThreads + + NESTED_ENTRY KiSwapContextInternal + PROLOG_END KiSwapContextInternal + + // BUSTEDDDD + b . + + ENTRY_END KiSwapContextInternal
Modified: trunk/reactos/ntoskrnl/ke/arm/thrdini.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/arm/thrdini.c?r... ============================================================================== --- trunk/reactos/ntoskrnl/ke/arm/thrdini.c [iso-8859-1] (original) +++ trunk/reactos/ntoskrnl/ke/arm/thrdini.c [iso-8859-1] Wed Nov 24 17:49:52 2010 @@ -14,6 +14,13 @@
/* GLOBALS ********************************************************************/
+typedef struct _KSWITCHFRAME +{ + PVOID ExceptionList; + BOOLEAN ApcBypassDisable; + PVOID RetAddr; +} KSWITCHFRAME, *PKSWITCHFRAME; + typedef struct _KUINIT_FRAME { KEXCEPTION_FRAME CtxSwitchFrame; @@ -32,6 +39,15 @@ NTAPI KiThreadStartup(VOID);
+VOID +FASTCALL +KiSwitchThreads( + IN PKTHREAD OldThread, + IN PKTHREAD NewThread +); + + +/* FIXME: THIS IS TOTALLY BUSTED NOW */ VOID NTAPI KiInitializeContextThread(IN PKTHREAD Thread, @@ -131,3 +147,217 @@ // Thread->KernelStack = (PVOID)CtxSwitchFrame; } + +VOID +FASTCALL +KiIdleLoop(VOID) +{ + PKPRCB Prcb = KeGetCurrentPrcb(); + PKTHREAD OldThread, NewThread; + + /* Initialize the idle loop: disable interrupts */ + _enable(); + YieldProcessor(); + YieldProcessor(); + _disable(); + + /* Now loop forever */ + while (TRUE) + { + /* Check for pending timers, pending DPCs, or pending ready threads */ + if ((Prcb->DpcData[0].DpcQueueDepth) || + (Prcb->TimerRequest) || + (Prcb->DeferredReadyListHead.Next)) + { + /* Quiesce the DPC software interrupt */ + HalClearSoftwareInterrupt(DISPATCH_LEVEL); + + /* Handle it */ + KiRetireDpcList(Prcb); + } + + /* Check if a new thread is scheduled for execution */ + if (Prcb->NextThread) + { + /* Enable interupts */ + _enable(); + + /* Capture current thread data */ + OldThread = Prcb->CurrentThread; + NewThread = Prcb->NextThread; + + /* Set new thread data */ + Prcb->NextThread = NULL; + Prcb->CurrentThread = NewThread; + + /* The thread is now running */ + NewThread->State = Running; + + /* Switch away from the idle thread */ + KiSwapContext(APC_LEVEL, OldThread); + + /* We are back in the idle thread -- disable interrupts again */ + _enable(); + YieldProcessor(); + YieldProcessor(); + _disable(); + } + else + { + /* Continue staying idle. Note the HAL returns with interrupts on */ + Prcb->PowerState.IdleFunction(&Prcb->PowerState); + } + } +} + +BOOLEAN +FASTCALL +KiSwapContextExit(IN PKTHREAD OldThread, + IN PKSWITCHFRAME SwitchFrame) +{ + PKIPCR Pcr = (PKIPCR)KeGetPcr(); + PKPROCESS OldProcess, NewProcess; + PKTHREAD NewThread; + ARM_TTB_REGISTER TtbRegister; + + /* We are on the new thread stack now */ + NewThread = Pcr->PrcbData.CurrentThread; + + /* Now we are the new thread. Check if it's in a new process */ + OldProcess = OldThread->ApcState.Process; + NewProcess = NewThread->ApcState.Process; + if (OldProcess != NewProcess) + { + TtbRegister.AsUlong = NewProcess->DirectoryTableBase[0]; + ASSERT(TtbRegister.Reserved == 0); + KeArmTranslationTableRegisterSet(TtbRegister); + } + + /* Increase thread context switches */ + NewThread->ContextSwitches++; + + /* Load data from switch frame */ + Pcr->NtTib.ExceptionList = SwitchFrame->ExceptionList; + + /* DPCs shouldn't be active */ + if (Pcr->PrcbData.DpcRoutineActive) + { + /* Crash the machine */ + KeBugCheckEx(ATTEMPTED_SWITCH_FROM_DPC, + (ULONG_PTR)OldThread, + (ULONG_PTR)NewThread, + (ULONG_PTR)OldThread->InitialStack, + 0); + } + + /* Kernel APCs may be pending */ + if (NewThread->ApcState.KernelApcPending) + { + /* Are APCs enabled? */ + if (!NewThread->SpecialApcDisable) + { + /* Request APC delivery */ + if (SwitchFrame->ApcBypassDisable) HalRequestSoftwareInterrupt(APC_LEVEL); + return TRUE; + } + } + + /* Return */ + return FALSE; +} + +VOID +FASTCALL +KiSwapContextEntry(IN PKSWITCHFRAME SwitchFrame, + IN ULONG_PTR OldThreadAndApcFlag) +{ + PKIPCR Pcr = (PKIPCR)KeGetPcr(); + PKTHREAD OldThread, NewThread; + + /* Save APC bypass disable */ + SwitchFrame->ApcBypassDisable = OldThreadAndApcFlag & 3; + SwitchFrame->ExceptionList = Pcr->NtTib.ExceptionList; + + /* Increase context switch count and check if tracing is enabled */ + Pcr->ContextSwitches++; + if (Pcr->PerfGlobalGroupMask) + { + /* We don't support this yet on x86 either */ + DPRINT1("WMI Tracing not supported\n"); + ASSERT(FALSE); + } + + /* Get thread pointers */ + OldThread = (PKTHREAD)(OldThreadAndApcFlag & ~3); + NewThread = Pcr->PrcbData.CurrentThread; + + /* Get the old thread and set its kernel stack */ + OldThread->KernelStack = SwitchFrame; + + /* Do the switch */ + KiSwitchThreads(OldThread, NewThread->KernelStack); +} + +VOID +NTAPI +KiDispatchInterrupt(VOID) +{ + PKIPCR Pcr = (PKIPCR)KeGetPcr(); + PKPRCB Prcb = &Pcr->PrcbData; + PVOID OldHandler; + PKTHREAD NewThread, OldThread; + + /* Disable interrupts */ + _disable(); + + /* Check for pending timers, pending DPCs, or pending ready threads */ + if ((Prcb->DpcData[0].DpcQueueDepth) || + (Prcb->TimerRequest) || + (Prcb->DeferredReadyListHead.Next)) + { + /* Switch to safe execution context */ + OldHandler = Pcr->NtTib.ExceptionList; + Pcr->NtTib.ExceptionList = EXCEPTION_CHAIN_END; + + /* Retire DPCs while under the DPC stack */ + //KiRetireDpcListInDpcStack(Prcb, Prcb->DpcStack); + // FIXME!!! // + KiRetireDpcList(Prcb); + + /* Restore context */ + Pcr->NtTib.ExceptionList = OldHandler; + } + + /* Re-enable interrupts */ + _enable(); + + /* Check for quantum end */ + if (Prcb->QuantumEnd) + { + /* Handle quantum end */ + Prcb->QuantumEnd = FALSE; + KiQuantumEnd(); + } + else if (Prcb->NextThread) + { + /* Capture current thread data */ + OldThread = Prcb->CurrentThread; + NewThread = Prcb->NextThread; + + /* Set new thread data */ + Prcb->NextThread = NULL; + Prcb->CurrentThread = NewThread; + + /* The thread is now running */ + NewThread->State = Running; + OldThread->WaitReason = WrDispatchInt; + + /* Make the old thread ready */ + KxQueueReadyThread(OldThread, Prcb); + + /* Swap to the new thread */ + KiSwapContext(APC_LEVEL, OldThread); + } +} + +/* EOF */
Modified: trunk/reactos/ntoskrnl/ntoskrnl.pspec URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ntoskrnl.pspec?rev... ============================================================================== --- trunk/reactos/ntoskrnl/ntoskrnl.pspec [iso-8859-1] (original) +++ trunk/reactos/ntoskrnl/ntoskrnl.pspec [iso-8859-1] Wed Nov 24 17:49:52 2010 @@ -112,7 +112,7 @@ @ FASTCALL ExInterlockedAddLargeStatistic(ptr long) #endif @ stdcall ExInterlockedAddUlong(ptr long ptr) -#ifndef __x86_64__ +#ifdef __x86__ @ FASTCALL ExInterlockedCompareExchange64(ptr ptr ptr ptr) @ stdcall ExInterlockedDecrementLong(ptr ptr) @ stdcall ExInterlockedExchangeUlong(ptr long ptr)
-
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