1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/libexec/include/exec/pager.h Mon Jun 06 01:02:59 2022 +0200
1.3 @@ -0,0 +1,64 @@
1.4 +/*
1.5 + * A system pager implementation.
1.6 + *
1.7 + * Copyright (C) 2022 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software; you can redistribute it and/or
1.10 + * modify it under the terms of the GNU General Public License as
1.11 + * published by the Free Software Foundation; either version 2 of
1.12 + * the License, or (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program; if not, write to the Free Software
1.21 + * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 + * Boston, MA 02110-1301, USA
1.23 + */
1.24 +
1.25 +#pragma once
1.26 +
1.27 +#include <map>
1.28 +
1.29 +#include <exec/mapped_region.h>
1.30 +
1.31 +#include "pager_object_interface.h"
1.32 +
1.33 +
1.34 +
1.35 +/* Collection types. */
1.36 +
1.37 +typedef std::map<l4_addr_t, MappedRegion> MappedRegions;
1.38 +
1.39 +
1.40 +
1.41 +/* A simple system pager also acting as a region mapper. */
1.42 +
1.43 +class ExecPager : public PagerObject
1.44 +{
1.45 +protected:
1.46 + MappedRegions _regions;
1.47 +
1.48 +public:
1.49 + virtual void add(MappedRegion region);
1.50 +
1.51 + /* Notification methods. */
1.52 +
1.53 + virtual long exception(l4_exc_regs_t regs,
1.54 + l4_snd_fpage_t *region);
1.55 +
1.56 + virtual long page_fault(l4_umword_t pfa, l4_umword_t pc,
1.57 + l4_snd_fpage_t *region);
1.58 +
1.59 + /* Region manager/mapper methods. */
1.60 +
1.61 + virtual long attach(address_t *start, offset_t size, map_flags_t flags,
1.62 + l4_cap_idx_t ds, address_t offset, unsigned char align);
1.63 +
1.64 +};
1.65 +
1.66 +/* vim: tabstop=2 expandtab shiftwidth=2
1.67 +*/