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85 lines
1.7 KiB
C++
85 lines
1.7 KiB
C++
/*
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* \brief Utilities for implementing VMMs on Genode/NOVA
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* \author Norman Feske
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* \date 2013-08-20
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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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#ifndef _INCLUDE__VMM__PRINTF_H_
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#define _INCLUDE__VMM__PRINTF_H_
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/* Genode includes */
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#include <base/thread.h>
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#include <base/lock.h>
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#include <base/log.h>
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/* NOVA includes */
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#include <nova/syscalls.h>
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namespace Vmm {
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using namespace Genode;
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/**
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* Print message while preserving the UTCB content
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*/
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template <typename... ARGS>
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void log(ARGS... args)
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{
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struct Utcb_backup { char buf[Nova::Utcb::size()]; };
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static Lock lock;
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static Utcb_backup utcb_backup;
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Lock::Guard guard(lock);
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utcb_backup = *(Utcb_backup *)Thread::myself()->utcb();
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Genode::log("VMM: ", args...);
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*(Utcb_backup *)Thread::myself()->utcb() = utcb_backup;
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}
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template <typename... ARGS>
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void warning(ARGS... args)
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{
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struct Utcb_backup { char buf[Nova::Utcb::size()]; };
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static Lock lock;
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static Utcb_backup utcb_backup;
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Lock::Guard guard(lock);
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utcb_backup = *(Utcb_backup *)Thread::myself()->utcb();
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Genode::warning("VMM: ", args...);
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*(Utcb_backup *)Thread::myself()->utcb() = utcb_backup;
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}
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template <typename... ARGS>
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void error(ARGS... args)
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{
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struct Utcb_backup { char buf[Nova::Utcb::size()]; };
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static Lock lock;
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static Utcb_backup utcb_backup;
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Lock::Guard guard(lock);
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utcb_backup = *(Utcb_backup *)Thread::myself()->utcb();
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Genode::error("VMM: ", args...);
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*(Utcb_backup *)Thread::myself()->utcb() = utcb_backup;
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}
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}
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#endif /* _INCLUDE__VMM__PRINTF_H_ */
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