1 /* 2 * A system pager implementation residing in the same task as a program. 3 * 4 * Copyright (C) 2022 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <map> 25 26 #include <exec/common.h> 27 #include <exec/pager.h> 28 29 30 31 /* Collection types. */ 32 33 typedef std::map<l4_addr_t, struct exec_region> ExecRegions; 34 typedef struct exec_region ExecRegion; 35 36 37 38 /* A simple system pager also acting as a region mapper. */ 39 40 class InternalPager : public ExecPager 41 { 42 protected: 43 ExecRegions _regions; 44 45 public: 46 virtual void add(ExecRegion ®ion); 47 48 /* Notification methods, implementing PagerObject. */ 49 50 virtual long exception(l4_exc_regs_t regs, 51 l4_snd_fpage_t *region); 52 53 virtual long page_fault(l4_umword_t pfa, l4_umword_t pc, 54 l4_snd_fpage_t *region); 55 56 /* Region manager/mapper methods. */ 57 58 virtual long attach(address_t *start, offset_t size, map_flags_t flags, 59 l4_cap_idx_t ds, address_t offset, unsigned char align); 60 61 }; 62 63 /* vim: tabstop=2 expandtab shiftwidth=2 64 */