Rev 1854 | Rev 1987 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1854 | jermar | 1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /** @addtogroup sparc64proc |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 35 | #include <proc/thread.h> |
||
| 36 | #include <arch/proc/thread.h> |
||
| 37 | #include <mm/frame.h> |
||
| 1857 | jermar | 38 | #include <mm/page.h> |
| 39 | #include <arch/mm/page.h> |
||
| 40 | #include <align.h> |
||
| 1854 | jermar | 41 | |
| 42 | void thr_constructor_arch(thread_t *t) |
||
| 43 | { |
||
| 44 | /* |
||
| 45 | * Allocate memory for uspace_window_buffer. |
||
| 46 | */ |
||
| 47 | t->arch.uspace_window_buffer = NULL; |
||
| 48 | } |
||
| 49 | |||
| 50 | void thr_destructor_arch(thread_t *t) |
||
| 51 | { |
||
| 1857 | jermar | 52 | if (t->arch.uspace_window_buffer) { |
| 53 | /* |
||
| 54 | * Mind the possible alignment of the userspace window buffer |
||
| 55 | * belonging to a killed thread. |
||
| 56 | */ |
||
| 57 | frame_free(ALIGN_DOWN((uintptr_t) t->arch.uspace_window_buffer, PAGE_SIZE)); |
||
| 58 | } |
||
| 1854 | jermar | 59 | } |
| 60 | |||
| 61 | void thread_create_arch(thread_t *t) |
||
| 62 | { |
||
| 63 | if ((t->flags & THREAD_FLAG_USPACE) && (!t->arch.uspace_window_buffer)) { |
||
| 64 | /* |
||
| 65 | * The thread needs userspace window buffer and the object |
||
| 66 | * returned from the slab allocator doesn't have any. |
||
| 67 | */ |
||
| 68 | t->arch.uspace_window_buffer = frame_alloc(ONE_FRAME, 0); |
||
| 1857 | jermar | 69 | } else { |
| 70 | uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer; |
||
| 71 | |||
| 72 | /* |
||
| 73 | * Mind the possible alignment of the userspace window buffer |
||
| 74 | * belonging to a killed thread. |
||
| 75 | */ |
||
| 76 | t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf, PAGE_SIZE); |
||
| 1854 | jermar | 77 | } |
| 78 | } |
||
| 79 | |||
| 80 | /** @} |
||
| 81 | */ |