1 /* 2 * A system pager implementation residing in the same task as a program. 3 * 4 * Copyright (C) 2022, 2023, 2024 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 <exec/pager.h> 25 #include <resource/resource.h> 26 27 #include "pager_object_interface.h" 28 29 30 31 /* A simple system pager also acting as a region mapper. */ 32 33 class InternalPager : public ExecPager, public PagerObject, public Resource 34 { 35 public: 36 explicit InternalPager(address_t start = 0, address_t end = 0); 37 38 /* Server details. */ 39 40 virtual ipc_server_default_config_type config(); 41 42 virtual void *interface() 43 { return static_cast<PagerObject *>(this); } 44 45 /* Resource methods. */ 46 47 virtual void close(); 48 49 /* Notification methods, implementing PagerObject. */ 50 51 virtual long exception(l4_exc_regs_t regs, 52 l4_snd_fpage_t *region); 53 54 virtual long page_fault(l4_umword_t pfa, l4_umword_t pc, 55 l4_snd_fpage_t *region); 56 57 /* Region manager/mapper methods. */ 58 59 virtual long attach(address_t *start, address_t size, rm_flags_t flags, 60 l4_cap_idx_t ds, rm_offset_t offset, unsigned char align); 61 62 virtual long detach(address_t addr, address_t size, rm_flags_t flags, 63 address_t *start, address_t *rsize, l4_cap_idx_t *ds); 64 65 virtual long reserve_area(address_t *start, address_t size, rm_flags_t flags, 66 unsigned char align); 67 }; 68 69 /* vim: tabstop=2 expandtab shiftwidth=2 70 */