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annotate packages/services/loader/current/src/crtendS.c @ 210:d2c90368aeef

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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children 74dbf4c3f2e1
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1 //==========================================================================
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2 //
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3 // crtendS.c
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4 //
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5 // C runtime support
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
184
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40 //==========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): nickg
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44 // Contributors: nickg
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45 // Date: 2000-11-25
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46 // Purpose: C runtime support
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47 // Description: This file contains code that must appear at the very end of
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48 // a dynamically loaded library. It contains definitions for the
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49 // end of the .init and .fini sections.
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //==========================================================================
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54
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55 #include <pkgconf/system.h>
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56
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57 #include <cyg/loader/loader.hxx>
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58
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59 /*------------------------------------------------------------------------*/
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60
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61 #ifndef INIT_SECTION_ASM_OP
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62 #define INIT_SECTION_ASM_OP ".section\t.init,\"ax\"\n"
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63 #endif
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64
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65 #ifndef FINI_SECTION_ASM_OP
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66 #define FINI_SECTION_ASM_OP ".section\t.fini,\"ax\"\n"
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67 #endif
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68
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69 #ifndef TEXT_SECTION_ASM_OP
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70 #define TEXT_SECTION_ASM_OP ".text\n"
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71 #endif
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72
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73 #ifndef CTORS_SECTION_ASM_OP
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74 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\""
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75 #endif
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76
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77 #ifndef DTORS_SECTION_ASM_OP
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78 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"aw\""
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79 #endif
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80
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81 /*------------------------------------------------------------------------*/
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82
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83 typedef void (*pfunc) (void);
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84
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85 #if 1
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86 asm(CTORS_SECTION_ASM_OP);
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87 static pfunc __CTOR_END__[1] __attribute__((unused)) = { (pfunc) 0 };
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88 asm(DTORS_SECTION_ASM_OP);
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89 static pfunc __DTOR_END__[] __attribute__((unused)) = { (pfunc) 0 };
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90 asm( TEXT_SECTION_ASM_OP );
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91
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92 #else
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93
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94 extern pfunc __CTOR_LIST__[];
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95 extern pfunc __CTOR_END__[];
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96 extern pfunc __DTOR_END__[];
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97
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98 #endif
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99
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100 /*------------------------------------------------------------------------*/
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101
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102 static void
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103 cyg_hal_invoke_constructors(void)
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104 {
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105 #if 1
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106 pfunc *p;
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107
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108 for (p = &__CTOR_END__[-1]; *p != (pfunc) -1 ; p--)
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109 (*p) ();
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110 #elif 0
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111 pfunc *p;
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112
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113 for (p = &__CTOR_LIST__[(int)__CTOR_LIST__[0]]; p != &__CTOR_LIST__[0] ; p--)
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114 (*p) ();
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115 #endif
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116 } // cyg_hal_invoke_constructors()
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117
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118 /*------------------------------------------------------------------------*/
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119
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120 static void __attribute__ ((__unused__))
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121 init_dummy (void)
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122 {
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123 asm (INIT_SECTION_ASM_OP);
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124 cyg_hal_invoke_constructors();
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125 }
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126
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127 asm( TEXT_SECTION_ASM_OP );
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128
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129 /*------------------------------------------------------------------------*/
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130
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131 static void __attribute__ ((__unused__))
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132 fini_dummy (void)
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133 {
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134 asm (FINI_SECTION_ASM_OP);
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135 // __do_global_dtors_aux ();
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136 #ifdef FORCE_FINI_SECTION_ALIGN
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137 FORCE_FINI_SECTION_ALIGN;
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138 #endif
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139 }
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140
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141 asm (TEXT_SECTION_ASM_OP);
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142
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143 /*------------------------------------------------------------------------*/
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144
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145 //==========================================================================
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146 // End of crtendS.c