Subversion Repositories HelenOS

Rev

Rev 3343 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1854 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
1854 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>
3492 rimsky 37
#include <mm/slab.h>
38
#include <arch/trap/regwin.h>
1857 jermar 39
#include <align.h>
1854 jermar 40
 
41
void thr_constructor_arch(thread_t *t)
42
{
43
    /*
44
     * Allocate memory for uspace_window_buffer.
45
     */
46
    t->arch.uspace_window_buffer = NULL;
47
}
48
 
49
void thr_destructor_arch(thread_t *t)
50
{
1857 jermar 51
    if (t->arch.uspace_window_buffer) {
3492 rimsky 52
        uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
1857 jermar 53
        /*
54
         * Mind the possible alignment of the userspace window buffer
55
         * belonging to a killed thread.
56
         */
3492 rimsky 57
        free((uint8_t *) ALIGN_DOWN(uw_buf, UWB_ALIGNMENT));
1857 jermar 58
    }
1854 jermar 59
}
60
 
61
void thread_create_arch(thread_t *t)
62
{
2049 jermar 63
    if ((t->flags & THREAD_FLAG_USPACE) && (!t->arch.uspace_window_buffer))
64
        {
1854 jermar 65
        /*
66
         * The thread needs userspace window buffer and the object
67
         * returned from the slab allocator doesn't have any.
68
         */
3492 rimsky 69
        t->arch.uspace_window_buffer = malloc(UWB_ASIZE, 0);
1857 jermar 70
    } else {
71
        uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
72
 
73
        /*
74
         * Mind the possible alignment of the userspace window buffer
75
         * belonging to a killed thread.
76
         */
2272 jermar 77
        t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf,
3492 rimsky 78
            UWB_ASIZE);
1854 jermar 79
    }
80
}
81
 
82
/** @}
83
 */