| 0,0 → 1,56 |
|---|
| /* |
| * Copyright (C) 2005 HelenOS Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <arch.h> |
| #include <memstr.h> |
| |
| /**< Array of threads that have currently some ASID assigned, |
| NULL means no thread have ASID with number of that index assigned */ |
| struct thread * asids[256]; |
| int last_asid; /**< The number of last assigned ASID */ |
| int asid_bitmap[32]; /**< Bitmap of ASIDs currently in TLB */ |
| |
| |
| /** Cleanup asid_bitmap |
| * |
| */ |
| void asid_bitmap_reset() |
| { |
| memsetb(asid_bitmap, sizeof(asid_bitmap), 0); |
| } |
| |
| |
| /** Initialize manipulating with ASIDs |
| * |
| */ |
| void init_asids() |
| { |
| memsetb(asids, sizeof(asids), 0); |
| asid_bitmap_reset(); |
| last_asid = 0; |
| } |