135 lines
3.2 KiB
C++
135 lines
3.2 KiB
C++
/*
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* \brief Genode/Nova specific VirtualBox SUPLib supplements
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* \author Alexander Boettcher
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* \date 2013-11-18
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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 distributed under the terms of the GNU General Public License
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* version 2.
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*/
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/* Genode's VirtualBox includes */
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#include "vcpu.h"
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#include "svm.h"
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class Vcpu_handler_svm : public Vcpu_handler
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{
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private:
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__attribute__((noreturn)) void _svm_vintr() {
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_default_handler(SVM_EXIT_VINTR);
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}
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__attribute__((noreturn)) void _svm_rdtsc() {
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_default_handler(SVM_EXIT_RDTSC);
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}
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__attribute__((noreturn)) void _svm_msr() {
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_default_handler(SVM_EXIT_MSR);
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}
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__attribute__((noreturn)) void _svm_recall()
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{
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_default_handler(SVM_INVALID);
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}
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__attribute__((noreturn)) void _svm_halt()
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{
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_default_handler(SVM_EXIT_HLT);
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}
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__attribute__((noreturn)) void _svm_ioio()
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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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if (utcb->qual[0] & 0x4) {
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unsigned ctrl0 = utcb->ctrl[0];
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PERR("invalid gueststate");
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/* deadlock here */
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_signal_vcpu.lock();
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utcb->ctrl[0] = ctrl0;
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utcb->ctrl[1] = 0;
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utcb->mtd = Mtd::CTRL;
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Nova::reply(myself->stack_top());
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}
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_default_handler(SVM_EXIT_IOIO);
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}
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template <unsigned X>
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__attribute__((noreturn)) void _svm_npt()
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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] & 1,
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utcb->qual[1] & ~((1UL << 12) - 1));
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}
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__attribute__((noreturn)) void _svm_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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/* we are ready, unlock our creator */
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_lock_startup.unlock();
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/* wait until EMT thread say so */
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_signal_vcpu.lock();
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Nova::reply(myself->stack_top());
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}
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public:
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Vcpu_handler_svm()
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{
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using namespace Nova;
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typedef Vcpu_handler_svm This;
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register_handler<RECALL, This,
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&This::_svm_recall>(vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<SVM_EXIT_IOIO, This,
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&This::_svm_ioio> (vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<SVM_EXIT_VINTR, This,
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&This::_svm_vintr> (vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<SVM_EXIT_RDTSC, This,
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&This::_svm_rdtsc> (vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<SVM_EXIT_MSR, This,
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&This::_svm_msr> (vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<SVM_NPT, This,
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&This::_svm_npt<SVM_NPT>>(vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<SVM_EXIT_HLT, This,
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&This::_svm_halt>(vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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register_handler<VCPU_STARTUP, This,
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&This::_svm_startup>(vcpu().exc_base(), Mtd(Mtd::ALL | Mtd::FPU));
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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 svm_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 svm_load_state(utcb, pVM, pVCpu);
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}
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};
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