137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
/*
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* \brief Genode/Nova specific VirtualBox SUPLib supplements
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* \author Alexander Boettcher
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* \author Norman Feske
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* \author Christian Helmuth
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*/
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/*
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* Copyright (C) 2013-2014 Genode Labs GmbH
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*
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* This file is distributed under the terms of the GNU General Public License
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* version 2.
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*/
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/* VirtualBox includes */
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#include <VBox/vmm/hwacc_vmx.h>
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#include "vmm_memory.h"
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/* Genode's VirtualBox includes */
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#include "vcpu.h"
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#include "vmx.h"
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class Vcpu_handler_vmx : public Vcpu_handler
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{
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private:
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template <unsigned X>
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__attribute__((noreturn)) void _vmx_ept()
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{
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using namespace Nova;
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using namespace Genode;
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Thread_base *myself = Thread_base::myself();
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Utcb *utcb = reinterpret_cast<Utcb *>(myself->utcb());
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_exc_memory<X>(myself, utcb, utcb->qual[0] & 0x38,
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utcb->qual[1] & ~((1UL << 12) - 1));
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}
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__attribute__((noreturn)) void _vmx_default() { _default_handler(); }
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__attribute__((noreturn)) void _vmx_startup()
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{
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using namespace Nova;
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Genode::Thread_base *myself = Genode::Thread_base::myself();
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Utcb *utcb = reinterpret_cast<Utcb *>(myself->utcb());
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/* avoid as many as possible VM exits */
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next_utcb.mtd = Nova::Mtd::CTRL;
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next_utcb.ctrl[0] = 0;
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next_utcb.ctrl[1] = 0;
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void *exit_status = _start_routine(_arg);
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pthread_exit(exit_status);
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Nova::reply(nullptr);
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}
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__attribute__((noreturn)) void _vmx_triple()
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{
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Genode::Thread_base *myself = Genode::Thread_base::myself();
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using namespace Nova;
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Vmm::printf("triple fault - dead\n");
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_default_handler();
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}
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__attribute__((noreturn)) void _vmx_irqwin()
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{
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_irq_window(VMX_EXIT_IRQ_WINDOW);
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}
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__attribute__((noreturn)) void _vmx_recall()
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{
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Vcpu_handler::_recall_handler();
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}
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public:
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Vcpu_handler_vmx(size_t stack_size, const pthread_attr_t *attr,
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void *(*start_routine) (void *), void *arg,
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Genode::Cpu_session * cpu_session)
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: Vcpu_handler(stack_size, attr, start_routine, arg, cpu_session)
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{
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using namespace Nova;
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typedef Vcpu_handler_vmx This;
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Genode::addr_t const exc_base = vcpu().exc_base();
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register_handler<VMX_EXIT_TRIPLE_FAULT, This,
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&This::_vmx_triple> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_INIT_SIGNAL, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_IRQ_WINDOW, This,
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&This::_vmx_irqwin> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_CPUID, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_HLT, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_RDTSC, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_VMCALL, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_PORT_IO, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_RDMSR, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_WRMSR, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_ERR_INVALID_GUEST_STATE, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_PAUSE, This,
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&This::_vmx_default> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VMX_EXIT_EPT_VIOLATION, This,
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&This::_vmx_ept<VMX_EXIT_EPT_VIOLATION>> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<VCPU_STARTUP, This,
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&This::_vmx_startup> (exc_base, Mtd::ALL | Mtd::FPU);
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register_handler<RECALL, This,
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&This::_vmx_recall> (exc_base, Mtd::EFL | Mtd::STA);
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start();
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}
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bool hw_save_state(Nova::Utcb * utcb, VM * pVM, PVMCPU pVCpu) {
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return vmx_save_state(utcb, pVM, pVCpu);
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}
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bool hw_load_state(Nova::Utcb * utcb, VM * pVM, PVMCPU pVCpu) {
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return vmx_load_state(utcb, pVM, pVCpu);
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}
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};
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