73 lines
2.2 KiB
C++
73 lines
2.2 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.cpp
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//
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// Note:
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//
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#include "hal.h"
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#if SINGULARITY_KERNEL
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#include "halkd.h"
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#endif // SINGULARITY_KERNEL
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/////////////////////////////////////////////////////////// Segment Selectors.
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//
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#define SEGMENT_SELECTOR(s) \
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(uint16)(offsetof(Struct_Microsoft_Singularity_Isal_IX_DescriptorTable_Gdt,s) \
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- offsetof(Struct_Microsoft_Singularity_Isal_IX_DescriptorTable_Gdt,nul))
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/////////////////////////////////////////////////////////// Processor Context.
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//
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Class_Microsoft_Singularity_Processor *
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Struct_Microsoft_Singularity_ProcessorContext::
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m_GetProcessor(Struct_Microsoft_Singularity_ProcessorContext *self)
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{
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return (Class_Microsoft_Singularity_Processor *) self->_processor;
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}
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void
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Struct_Microsoft_Singularity_ProcessorContext::
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m_UpdateAfterGC(Struct_Microsoft_Singularity_ProcessorContext * self,
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Class_Microsoft_Singularity_Processor *processor)
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{
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self->_processor = processor;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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#if SINGULARITY_KERNEL
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#if PAGING
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extern void FakeSyscall();
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#endif
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void ProcessorInitialize(Class_Microsoft_Singularity_Hal_Cpu *pCpu)
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{
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// The ProcessorContext can be found at a published offset in FS. The DS-based address of this
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// context is available in the hal processor record
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Struct_Microsoft_Singularity_ProcessorContext *proc
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= (Struct_Microsoft_Singularity_ProcessorContext *) pCpu->CpuRecordPage;
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proc->halCpu = pCpu;
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#if PAGING
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// XXX PBAR Set up MSRs for SYSENTER/SYSEXIT
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Class_Microsoft_Singularity_Isal_Isa::g_WriteMsr(0x174, SEGMENT_SELECTOR(pc));
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Class_Microsoft_Singularity_Isal_Isa::g_WriteMsr(0x175, proc->cpuRecord.interruptStackBegin + 0x2000);
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Class_Microsoft_Singularity_Isal_Isa::g_WriteMsr(0x176, (UINT64)FakeSyscall);
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#endif
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}
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#endif // SINGULARITY_KERNEL
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//
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///////////////////////////////////////////////////////////////// End of File.
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