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| Rev | Author | Line No. | Line |
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| 1797 | decky | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Ondrej Palkovsky |
| 1797 | decky | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 1864 | jermar | 29 | /** @addtogroup libcsparc64 sparc64 |
| 30 | * @ingroup lc |
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| 1797 | decky | 31 | * @{ |
| 32 | */ |
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| 33 | /** @file |
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| 1864 | jermar | 34 | * |
| 1797 | decky | 35 | */ |
| 36 | |||
| 37 | #include <thread.h> |
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| 38 | #include <malloc.h> |
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| 2581 | jermar | 39 | #include <align.h> |
| 1797 | decky | 40 | |
| 2061 | jermar | 41 | /* |
| 42 | * sparc64 uses thread-local storage data structures, variant II, as described |
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| 43 | * in: |
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| 44 | * Drepper U.: ELF Handling For Thread-Local Storage, 2005 |
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| 45 | */ |
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| 46 | |||
| 47 | /** Allocate TLS variant II data structures for a thread. |
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| 1797 | decky | 48 | * |
| 2061 | jermar | 49 | * Only static model is supported. |
| 50 | * |
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| 51 | * @param data Pointer to pointer to thread local data. This is actually an |
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| 52 | * output argument. |
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| 53 | * @param size Size of thread local data. |
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| 54 | * @return Pointer to TCB structure. |
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| 1797 | decky | 55 | */ |
| 56 | tcb_t * __alloc_tls(void **data, size_t size) |
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| 57 | { |
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| 1864 | jermar | 58 | tcb_t *tcb; |
| 59 | |||
| 2581 | jermar | 60 | size = ALIGN_UP(size, &_tls_alignment); |
| 61 | *data = memalign(&_tls_alignment, sizeof(tcb_t) + size); |
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| 1797 | decky | 62 | |
| 1864 | jermar | 63 | tcb = (tcb_t *) (*data + size); |
| 64 | tcb->self = tcb; |
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| 65 | |||
| 66 | return tcb; |
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| 1797 | decky | 67 | } |
| 68 | |||
| 2061 | jermar | 69 | /** Free TLS variant II data structures of a thread. |
| 70 | * |
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| 71 | * Only static model is supported. |
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| 72 | * |
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| 73 | * @param tcb Pointer to TCB structure. |
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| 74 | * @param size Size of thread local data. |
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| 75 | */ |
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| 1797 | decky | 76 | void __free_tls_arch(tcb_t *tcb, size_t size) |
| 77 | { |
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| 2581 | jermar | 78 | size = ALIGN_UP(size, &_tls_alignment); |
| 2061 | jermar | 79 | void *start = ((void *) tcb) - size; |
| 1864 | jermar | 80 | free(start); |
| 1797 | decky | 81 | } |
| 82 | |||
| 83 | /** @} |
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| 84 | */ |