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1 /* Startup routines for NetWare.
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2 Contributed by Jan Beulich (jbeulich@novell.com)
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3 Copyright (C) 2004, 2007 Free Software Foundation, Inc.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21 #include <stddef.h>
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22 #include <stdint.h>
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23 #include "unwind-dw2-fde.h"
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24
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25 int __init_environment (void *);
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26 int __deinit_environment (void *);
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27
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28
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29 #define SECTION_DECL(name, decl) decl __attribute__((__section__(name)))
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30
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31 SECTION_DECL(".ctors", void(*const __CTOR_LIST__)(void))
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32 = (void(*)(void))(intptr_t)-1;
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33 SECTION_DECL(".ctors$_", void(*const __CTOR_END__)(void)) = NULL;
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34
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35 SECTION_DECL(".dtors", void(*const __DTOR_LIST__)(void))
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36 = (void(*)(void))(intptr_t)-1;
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37 SECTION_DECL(".dtors$_", void(*const __DTOR_END__)(void)) = NULL;
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38
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39 /* No need to use the __[de]register_frame_info_bases functions since
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40 for us the bases are NULL always anyway. */
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41 void __register_frame_info (const void *, struct object *)
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42 __attribute__((__weak__));
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43 void *__deregister_frame_info (const void *) __attribute__((__weak__));
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44
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45 SECTION_DECL(".eh_frame", /*const*/ uint32_t __EH_FRAME_BEGIN__[]) = { };
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46 SECTION_DECL(".eh_frame$_", /*const*/ uint32_t __EH_FRAME_END__[]) = {0};
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47
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48 int
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49 __init_environment (void *unused __attribute__((__unused__)))
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50 {
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51 void (* const * pctor)(void);
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52 static struct object object;
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53
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54 if (__register_frame_info)
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55 __register_frame_info (__EH_FRAME_BEGIN__, &object);
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56
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57 for (pctor = &__CTOR_END__ - 1; pctor > &__CTOR_LIST__; --pctor)
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58 if (*pctor != NULL)
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59 (*pctor)();
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60
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61 return 0;
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62 }
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63
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64 int
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65 __deinit_environment (void *unused __attribute__((__unused__)))
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66 {
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67 /* This should be static to prevent calling the same destructor
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68 twice (just in case where we get here multiple times). */
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69 static void (* const * pdtor)(void) = &__DTOR_LIST__ + 1;
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70
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71 while (pdtor < &__DTOR_END__)
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72 if (*pdtor++ != NULL)
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73 pdtor[-1] ();
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74
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75 if (__deregister_frame_info)
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76 __deregister_frame_info(__EH_FRAME_BEGIN__);
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77
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78 return 0;
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79 }
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