88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
/*
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* \brief Protection-domain facility
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* \author Norman Feske
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* \date 2009-10-02
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*/
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/*
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* Copyright (C) 2009-2013 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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/* Genode includes */
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#include <base/printf.h>
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#include <util/flex_iterator.h>
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/* core includes */
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#include <platform_pd.h>
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using namespace Genode;
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/***************************
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** Public object members **
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***************************/
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int Platform_pd::bind_thread(Platform_thread *thread)
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{
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thread->bind_to_pd(this, _thread_cnt == 0);
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_thread_cnt++;
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return 0;
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}
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void Platform_pd::unbind_thread(Platform_thread *thread)
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{
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PDBG("not implemented");
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}
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int Platform_pd::assign_parent(Native_capability parent)
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{
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if (_parent.valid()) return -1;
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if (!parent.valid()) return -2;
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_parent = parent;
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return 0;
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}
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Platform_pd::Platform_pd(Allocator * md_alloc, char const *,
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signed pd_id, bool create)
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: _thread_cnt(0), _pd_sel(Native_thread::INVALID_INDEX) { }
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Platform_pd::~Platform_pd()
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{
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/* invalidate weak pointers to this object */
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Address_space::lock_for_destruction();
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if (_pd_sel == Native_thread::INVALID_INDEX)
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return;
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/* Revoke and free cap, pd is gone */
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Nova::revoke(Nova::Obj_crd(_pd_sel, 0));
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cap_map()->remove(_pd_sel, 0, false);
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}
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void Platform_pd::flush(addr_t remote_virt, size_t size)
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{
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Nova::Rights const revoke_rwx(true, true, true);
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Flexpage_iterator flex(remote_virt, size, remote_virt, size, 0);
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Flexpage page = flex.page();
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if (pd_sel() == Native_thread::INVALID_INDEX)
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return;
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while (page.valid()) {
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Nova::Mem_crd mem(page.addr >> 12, page.log2_order - 12, revoke_rwx);
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Nova::revoke(mem, true, true, pd_sel());
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page = flex.page();
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}
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}
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