2 * arch/ubicom32/include/asm/range-protect.h
3 * Assembly macros declared in C for enabling memory protection.
5 * (C) Copyright 2009, Ubicom, Inc.
7 * This file is part of the Ubicom32 Linux Kernel Port.
9 * The Ubicom32 Linux Kernel Port is free software: you can redistribute
10 * it and/or modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation, either version 2 of the
12 * License, or (at your option) any later version.
14 * The Ubicom32 Linux Kernel Port is distributed in the hope that it
15 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
16 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with the Ubicom32 Linux Kernel Port. If not,
21 * see <http://www.gnu.org/licenses/>.
23 * Ubicom32 implementation derived from (with many thanks):
29 #ifndef _ASM_UBICOM32_RANGE_PROTECT_H
30 #define _ASM_UBICOM32_RANGE_PROTECT_H
32 #if !defined(__ASSEMBLY__)
33 #include <asm/thread.h>
35 * The following macros should be the identical to the ones in
38 * You should only use the enable/disable ranges when you have the atomic lock,
39 * if you do not there will be problems.
43 * enable_kernel_ranges
44 * Enable the kernel ranges (disabling protection) for thread,
45 * where thread == (1 << thread number)
48 ".macro enable_kernel_ranges thread \n\t"
49 #ifdef CONFIG_PROTECT_KERNEL
50 " or.4 I_RANGE0_EN, I_RANGE0_EN, \\thread \n\t" /* Enable Range Register */
51 " or.4 D_RANGE0_EN, D_RANGE0_EN, \\thread \n\t"
52 " or.4 D_RANGE1_EN, D_RANGE1_EN, \\thread \n\t"
57 #else /* __ASSEMBLY__ */
59 #include <asm/range-protect-asm.h>
62 #endif /* _ASM_UBICOM32_RANGE_PROTECT_H */