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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 | void _putint(int i); |
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42 | /* FIXME */ |
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43 | void __udivdi3(void); |
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44 | void __umoddi3(void); |
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45 | |||
46 | static void kputint(unsigned i) |
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47 | { |
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48 | unsigned dummy; |
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49 | asm volatile ( |
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50 | "movl $30, %%eax;" |
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51 | "int $0x30" |
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52 | : "=d" (dummy) /* output - %edx clobbered */ |
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53 | : "d" (i) /* input */ |
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54 | : "%eax","%ecx" /* all scratch registers clobbered */ |
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55 | ); |
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56 | } |
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57 | |||
58 | typedef struct { |
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59 | unsigned long int ti_module; |
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60 | unsigned long int ti_offset; |
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61 | } tls_index; |
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62 | |||
63 | void __attribute__ ((__regparm__ (1))) |
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64 | *___tls_get_addr(tls_index *ti); |
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65 | |||
66 | void __attribute__ ((__regparm__ (1))) |
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67 | *___tls_get_addr(tls_index *ti) |
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68 | { |
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69 | size_t tls_size; |
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70 | uint8_t *tls; |
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71 | |||
72 | /* Calculate size of TLS block */ |
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73 | tls_size = ALIGN_UP(&_tbss_end - &_tdata_start, &_tls_alignment); |
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74 | |||
75 | /* The TLS block is just before TCB */ |
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76 | tls = (uint8_t *)__tcb_get() - tls_size; |
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77 | |||
78 | return tls + ti->ti_offset; |
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79 | } |
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80 | |||
81 | void _putint(int i) |
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82 | { |
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83 | } |
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84 | |||
85 | /** @} |
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86 | */ |