Subversion Repositories HelenOS

Rev

Rev 2581 | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2581 Rev 2586
1 
/*
 1 
/*
2 
 * Copyright (c) 2006 Ondrej Palkovsky
 2 
 * Copyright (c) 2006 Ondrej Palkovsky
3 
 * All rights reserved.
 3 
 * All rights reserved.
4 
 *
 4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
 5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
 6 
 * modification, are permitted provided that the following conditions
7 
 * are met:
 7 
 * are met:
8 
 *
 8 
 *
9 
 * - Redistributions of source code must retain the above copyright
 9 
 * - Redistributions of source code must retain the above copyright
10 
 *   notice, this list of conditions and the following disclaimer.
 10 
 *   notice, this list of conditions and the following disclaimer.
11 
 * - Redistributions in binary form must reproduce the above copyright
 11 
 * - Redistributions in binary form must reproduce the above copyright
12 
 *   notice, this list of conditions and the following disclaimer in the
 12 
 *   notice, this list of conditions and the following disclaimer in the
13 
 *   documentation and/or other materials provided with the distribution.
 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
 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.
 15 
 *   derived from this software without specific prior written permission.
16 
 *
 16 
 *
17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 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
 18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 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
 23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 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
 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.
 26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
 27 
 */
28 
 
 28 
 
29 
/** @addtogroup libcsparc64 sparc64
 29 
/** @addtogroup libcsparc64 sparc64
30 
 * @ingroup lc
 30 
 * @ingroup lc
31 
 * @{
 31 
 * @{
32 
 */
 32 
 */
33 
/** @file
 33 
/** @file
34 
 *
 34 
 *
35 
 */
 35 
 */
36 
 
 36 
 
37 
#include <thread.h>
 37 
#include <tls.h>
38 
#include <malloc.h>
 38 
#include <sys/types.h>
39 
#include <align.h>
 - 
 
40 
 
 39 
 
41 
/*
 - 
 
42 
 * sparc64 uses thread-local storage data structures, variant II, as described
 - 
 
43 
 * in:
 - 
 
44 
 *  Drepper U.: ELF Handling For Thread-Local Storage, 2005
 - 
 
45 
 */
 - 
 
46 
 
 - 
 
47 
/** Allocate TLS variant II data structures for a thread.
 - 
 
48 
 *
 - 
 
49 
 * Only static model is supported.
 - 
 
50 
 *
 - 
 
51 
 * @param data Pointer to pointer to thread local data. This is actually an
 - 
 
52 
 *  output argument.
 - 
 
53 
 * @param size Size of thread local data.
 - 
 
54 
 * @return Pointer to TCB structure.
 - 
 
55 
 */
 - 
 
56 
tcb_t * __alloc_tls(void **data, size_t size)
 40 
tcb_t * __alloc_tls(void **data, size_t size)
57 
{
 41 
{
58 
    tcb_t *tcb;
 - 
 
59 
   
 - 
 
60 
    size = ALIGN_UP(size, &_tls_alignment);
 - 
 
61 
    *data = memalign(&_tls_alignment, sizeof(tcb_t) + size);
 - 
 
62 
 
 - 
 
63 
    tcb = (tcb_t *) (*data + size);
 42 
    return tls_alloc_variant_2(data, size);
64 
    tcb->self = tcb;
 - 
 
65 
 
 - 
 
66 
    return tcb;
 - 
 
67 
}
 43 
}
68 
 
 44 
 
69 
/** Free TLS variant II data structures of a thread.
 - 
 
70 
 *
 - 
 
71 
 * Only static model is supported.
 - 
 
72 
 *
 - 
 
73 
 * @param tcb Pointer to TCB structure.
 - 
 
74 
 * @param size Size of thread local data.
 - 
 
75 
 */
 - 
 
76 
void __free_tls_arch(tcb_t *tcb, size_t size)
 45 
void __free_tls_arch(tcb_t *tcb, size_t size)
77 
{
 46 
{
78 
    size = ALIGN_UP(size, &_tls_alignment);
 - 
 
79 
    void *start = ((void *) tcb) - size;
 47 
    tls_free_variant_2(tcb, size);
80 
    free(start);
 - 
 
81 
}
 48 
}
82 
 
 49 
 
83 
/** @}
 50 
/** @}
84 
 */
 51 
 */
85 
 
 52