| paul@472 | 1 | /* |
| paul@472 | 2 | * Utility functions for base types. |
| paul@472 | 3 | * |
| paul@472 | 4 | * Copyright (C) 2022, 2023 Paul Boddie <paul@boddie.org.uk> |
| paul@472 | 5 | * |
| paul@472 | 6 | * This program is free software; you can redistribute it and/or |
| paul@472 | 7 | * modify it under the terms of the GNU General Public License as |
| paul@472 | 8 | * published by the Free Software Foundation; either version 2 of |
| paul@472 | 9 | * the License, or (at your option) any later version. |
| paul@472 | 10 | * |
| paul@472 | 11 | * This program is distributed in the hope that it will be useful, |
| paul@472 | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| paul@472 | 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| paul@472 | 14 | * GNU General Public License for more details. |
| paul@472 | 15 | * |
| paul@472 | 16 | * You should have received a copy of the GNU General Public License |
| paul@472 | 17 | * along with this program; if not, write to the Free Software |
| paul@472 | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| paul@472 | 19 | * Boston, MA 02110-1301, USA |
| paul@472 | 20 | */ |
| paul@472 | 21 | |
| paul@472 | 22 | #include <l4/re/c/dataspace.h> |
| paul@472 | 23 | |
| paul@472 | 24 | #include "base.h" |
| paul@472 | 25 | |
| paul@472 | 26 | |
| paul@472 | 27 | |
| paul@472 | 28 | /* Return mapping flags corresponding to page fault flags. */ |
| paul@472 | 29 | |
| paul@472 | 30 | map_flags_t map_flags_for_fault(l4_umword_t flags) |
| paul@472 | 31 | { |
| paul@472 | 32 | map_flags_t map_flags = (flags & 4 ? L4RE_DS_F_RX : 0) | |
| paul@472 | 33 | (flags & 2 ? L4RE_DS_F_W : 0) | |
| paul@472 | 34 | (flags & 1 ? L4RE_DS_F_R : 0); |
| paul@472 | 35 | |
| paul@472 | 36 | if (!map_flags) |
| paul@472 | 37 | map_flags = L4RE_DS_F_R; |
| paul@472 | 38 | |
| paul@472 | 39 | return map_flags; |
| paul@472 | 40 | } |
| paul@472 | 41 | |
| paul@472 | 42 | // vim: tabstop=2 expandtab shiftwidth=2 |
