91 lines
3.0 KiB
C#
91 lines
3.0 KiB
C#
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////////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: Processor.cs
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//
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// Note:
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//
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using System;
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using System.Runtime.InteropServices;
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using System.Runtime.CompilerServices;
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using System.Threading;
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using Microsoft.Singularity.Hal;
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using Microsoft.Singularity.Io;
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using Microsoft.Singularity.Memory;
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using Microsoft.Singularity.Scheduling;
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using Microsoft.Singularity.V1.Threads;
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using Microsoft.Singularity.Isal;
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namespace Microsoft.Singularity
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{
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[CLSCompliant(false)]
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[AccessedByRuntime("Method called from HAL.cpp")]
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public class PrivilegedGate
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{
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[NoHeapAllocation]
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[AccessedByRuntime("referenced from c++")]
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public static bool DisableInterrupts()
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{
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if ((ProcessPrivileges.GetCurrentPrivileges().AllowedOperations &
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ProcessPrivileges.Operations.DisableInterrupts) != 0) {
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return Processor.DisableInterrupts();
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}
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// ISSUE: Assert here until all instances get cleaned up from SIPs
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// This assertion should be removed / replaced with something that would
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// flag / halt / break only the bogus SIP, not the entire system
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VTable.Assert(false, "DisableInterrupts called from unprivileged SIP");
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return false;
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}
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[NoHeapAllocation]
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[AccessedByRuntime("referenced from c++")]
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public static void RestoreInterrupts(bool enabled)
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{
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if ((ProcessPrivileges.GetCurrentPrivileges().AllowedOperations &
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ProcessPrivileges.Operations.DisableInterrupts) != 0) {
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Processor.RestoreInterrupts(enabled);
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} else {
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// ISSUE: Assert here until all instances get cleaned up from SIPs
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// This assertion should be removed / replaced with something that would
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// flag / halt / break only the bogus SIP, not the entire system
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VTable.Assert(false, "RestoreInterrupts called from unprivileged SIP");
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}
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}
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// Use this method for assertions only!
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[NoHeapAllocation]
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[AccessedByRuntime("referenced from c++")]
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public static bool InterruptsDisabled()
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{
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if ((ProcessPrivileges.GetCurrentPrivileges().AllowedOperations &
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ProcessPrivileges.Operations.DisableInterrupts) != 0) {
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return Processor.InterruptsDisabled();
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}
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// ISSUE: Assert here until all instances get cleaned up from SIPs
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// This assertion should be removed / replaced with something that would
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// flag / halt / break only the bogus SIP, not the entire system
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VTable.Assert(false, "InterruptsDisabled called from unprivileged SIP");
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return false;
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}
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}
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}
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