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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 <thread.h> |
38 | #include <malloc.h> |
38 | #include <malloc.h> |
39 | 39 | ||
40 | /* |
40 | /* |
41 | * sparc64 uses thread-local storage data structures, variant II, as described |
41 | * sparc64 uses thread-local storage data structures, variant II, as described |
42 | * in: |
42 | * in: |
43 | * Drepper U.: ELF Handling For Thread-Local Storage, 2005 |
43 | * Drepper U.: ELF Handling For Thread-Local Storage, 2005 |
44 | */ |
44 | */ |
45 | 45 | ||
46 | /** Allocate TLS variant II data structures for a thread. |
46 | /** Allocate TLS variant II data structures for a thread. |
47 | * |
47 | * |
48 | * Only static model is supported. |
48 | * Only static model is supported. |
49 | * |
49 | * |
50 | * @param data Pointer to pointer to thread local data. This is actually an |
50 | * @param data Pointer to pointer to thread local data. This is actually an |
51 | * output argument. |
51 | * output argument. |
52 | * @param size Size of thread local data. |
52 | * @param size Size of thread local data. |
53 | * @return Pointer to TCB structure. |
53 | * @return Pointer to TCB structure. |
54 | */ |
54 | */ |
55 | tcb_t * __alloc_tls(void **data, size_t size) |
55 | tcb_t * __alloc_tls(void **data, size_t size) |
56 | { |
56 | { |
57 | tcb_t *tcb; |
57 | tcb_t *tcb; |
58 | 58 | ||
59 | *data = malloc(sizeof(tcb_t) + size); |
59 | *data = malloc(sizeof(tcb_t) + size); |
60 | 60 | ||
61 | tcb = (tcb_t *) (*data + size); |
61 | tcb = (tcb_t *) (*data + size); |
62 | tcb->self = tcb; |
62 | tcb->self = tcb; |
63 | 63 | ||
64 | return tcb; |
64 | return tcb; |
65 | } |
65 | } |
66 | 66 | ||
67 | /** Free TLS variant II data structures of a thread. |
67 | /** Free TLS variant II data structures of a thread. |
68 | * |
68 | * |
69 | * Only static model is supported. |
69 | * Only static model is supported. |
70 | * |
70 | * |
71 | * @param tcb Pointer to TCB structure. |
71 | * @param tcb Pointer to TCB structure. |
72 | * @param size Size of thread local data. |
72 | * @param size Size of thread local data. |
73 | */ |
73 | */ |
74 | void __free_tls_arch(tcb_t *tcb, size_t size) |
74 | void __free_tls_arch(tcb_t *tcb, size_t size) |
75 | { |
75 | { |
76 | void *start = ((void *) tcb) - size; |
76 | void *start = ((void *) tcb) - size; |
77 | free(start); |
77 | free(start); |
78 | } |
78 | } |
79 | 79 | ||
80 | /** @} |
80 | /** @} |
81 | */ |
81 | */ |
82 | 82 |