77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
/*
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* \brief Kernel backend for virtual machines
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* \author Martin Stein
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* \author Stefan Kalkowski
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* \date 2013-10-30
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*/
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/*
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* Copyright (C) 2013-2017 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 Affero General Public License version 3.
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*/
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/* core includes */
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#include <kernel/cpu.h>
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#include <kernel/vm.h>
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#include <cpu/vm_state_trustzone.h>
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using namespace Kernel;
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Kernel::Vm::Vm(void * const state,
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Kernel::Signal_context * const context,
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void * const /* table */)
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:
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Cpu_job(Cpu_priority::MIN, 0),
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_state((Genode::Vm_state *)state),
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_context(context), _table(0)
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{
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affinity(cpu_pool().primary_cpu());
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}
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Kernel::Vm::~Vm() {}
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void Vm::exception(Cpu & cpu)
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{
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switch(_state->cpu_exception) {
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case Genode::Cpu_state::INTERRUPT_REQUEST:
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case Genode::Cpu_state::FAST_INTERRUPT_REQUEST:
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_interrupt(cpu.id());
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return;
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case Genode::Cpu_state::DATA_ABORT:
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_state->dfar = Cpu::Dfar::read();
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[[fallthrough]];
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default:
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pause();
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_context->submit(1);
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}
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}
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bool secure_irq(unsigned const i);
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extern "C" void monitor_mode_enter_normal_world(Cpu::Context*, void*);
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extern void * kernel_stack;
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void Vm::proceed(Cpu & cpu)
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{
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unsigned const irq = _state->irq_injection;
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if (irq) {
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if (cpu.pic().secure(irq)) {
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Genode::raw("Refuse to inject secure IRQ into VM");
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} else {
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cpu.pic().trigger(irq);
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_state->irq_injection = 0;
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}
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}
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monitor_mode_enter_normal_world(reinterpret_cast<Cpu::Context*>(_state),
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(void*) cpu.stack_start());
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}
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