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| Rev | Author | Line No. | Line |
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| 2956 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2008 Jiri Svoboda |
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| 3 | * All rights reserved. |
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| 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 | |||
| 29 | /** @addtogroup rtld rtld |
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| 30 | * @brief |
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| 31 | * @{ |
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| 32 | */ |
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| 33 | /** |
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| 34 | * @file |
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| 35 | */ |
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| 36 | |||
| 37 | #include <sys/types.h> |
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| 38 | #include <align.h> |
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| 39 | #include <tls.h> |
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| 40 | |||
| 41 | static void kputint(unsigned i) |
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| 42 | { |
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| 3400 | svoboda | 43 | // unsigned dummy; |
| 44 | // asm volatile ( |
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| 45 | // "movl $31, %%eax;" |
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| 46 | // "int $0x30" |
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| 47 | // : "=d" (dummy) /* output - %edx clobbered */ |
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| 48 | // : "d" (i) /* input */ |
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| 49 | // : "%eax","%ecx" /* all scratch registers clobbered */ |
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| 50 | // ); |
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| 2956 | svoboda | 51 | } |
| 52 | |||
| 53 | typedef struct { |
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| 54 | unsigned long int ti_module; |
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| 55 | unsigned long int ti_offset; |
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| 56 | } tls_index; |
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| 57 | |||
| 58 | void __attribute__ ((__regparm__ (1))) |
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| 59 | *___tls_get_addr(tls_index *ti); |
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| 60 | |||
| 61 | void __attribute__ ((__regparm__ (1))) |
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| 62 | *___tls_get_addr(tls_index *ti) |
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| 63 | { |
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| 64 | size_t tls_size; |
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| 65 | uint8_t *tls; |
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| 66 | |||
| 67 | /* Calculate size of TLS block */ |
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| 68 | tls_size = ALIGN_UP(&_tbss_end - &_tdata_start, &_tls_alignment); |
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| 69 | |||
| 70 | /* The TLS block is just before TCB */ |
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| 71 | tls = (uint8_t *)__tcb_get() - tls_size; |
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| 72 | |||
| 73 | return tls + ti->ti_offset; |
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| 74 | } |
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| 75 | |||
| 76 | /** @} |
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| 77 | */ |