96 lines
1.8 KiB
C++
96 lines
1.8 KiB
C++
/*
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* \brief Kernel backend for virtual machines
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* \author Martin Stein
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* \date 2013-10-30
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*/
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/*
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* Copyright (C) 2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _KERNEL__VM_H_
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#define _KERNEL__VM_H_
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#include <vm_state.h>
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/* core includes */
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#include <kernel/kernel.h>
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#include <kernel/pd.h>
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#include <kernel/signal_receiver.h>
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namespace Kernel
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{
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/**
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* Kernel backend for a virtual machine
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*/
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class Vm;
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typedef Object_pool<Vm> Vm_pool;
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Vm_pool * vm_pool();
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}
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class Kernel::Vm : public Object<Vm, vm_pool>, public Cpu_job
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{
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private:
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enum State { ACTIVE, INACTIVE };
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Genode::Vm_state * const _state;
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Signal_context * const _context;
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void * const _table;
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State _scheduled = INACTIVE;
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public:
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/**
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* Constructor
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*
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* \param state initial CPU state
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* \param context signal for VM exceptions other than interrupts
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* \param table translation table for guest to host physical memory
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*/
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Vm(void * const state,
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Signal_context * const context,
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void * const table);
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/**
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* Inject an interrupt to this VM
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*
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* \param irq interrupt number to inject
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*/
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void inject_irq(unsigned irq);
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/****************
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** Vm_session **
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****************/
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void run()
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{
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if (_scheduled != ACTIVE) Cpu_job::_activate_own_share();
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_scheduled = ACTIVE;
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}
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void pause()
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{
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if (_scheduled != INACTIVE) Cpu_job::_deactivate_own_share();
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_scheduled = INACTIVE;
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}
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/*************
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** Cpu_job **
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*************/
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void exception(unsigned const cpu);
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void proceed(unsigned const cpu);
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Cpu_job * helping_sink() { return this; }
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};
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#endif /* _KERNEL__VM_H_ */
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