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annotate packages/language/c/libc/startup/current/src/cstartup.cxx @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

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Update all copyright banners to reflect FSF ownership; fix and improve licence text.
author jlarmour
date Thu, 29 Jan 2009 17:47:46 +0000
parents 9b5bc3c72ac4
children
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1 //=======================================================================
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2 //
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3 // cstartup.cxx
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4 //
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5 // Support for startup of ISO C environment
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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 Free Software Foundation, 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
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): jlarmour
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43 // Contributors:
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44 // Date: 2000-04-30
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45 // Purpose:
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46 // Description:
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47 // Usage:
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //========================================================================
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52
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53 // CONFIGURATION
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54
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55 #include <pkgconf/system.h> // CYGPKG_KERNEL
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56 #include <pkgconf/libc_startup.h> // Configuration header
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57
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58 // INCLUDES
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59
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60 #include <cyg/infra/cyg_type.h> // Common type definitions and support
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61 #include <cyg/infra/cyg_trac.h> // Common tracing support
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62
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63 #ifdef CYGPKG_KERNEL
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64 # include <pkgconf/kernel.h> // eCos kernel configuration
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65 # include <cyg/kernel/thread.hxx> // eCos thread support
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66 # include <cyg/kernel/thread.inl>
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67 #endif
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68
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69
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70 // FUNCTION PROTOTYPES
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71
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72 externC void
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73 cyg_libc_invoke_main( CYG_ADDRWORD );
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74
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75 // EXTERNS
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76
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77 #ifdef CYGSEM_LIBC_STARTUP_MAIN_THREAD
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78 extern Cyg_Thread cyg_libc_main_thread;
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79
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80 // FUNCTIONS
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81
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82 externC void
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83 cyg_iso_c_start( void )
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84 {
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85 static int initialized=0;
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86
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87 CYG_REPORT_FUNCNAME( "cyg_iso_c_start" );
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88 CYG_REPORT_FUNCARGVOID();
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89
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90 if (initialized++ == 0) {
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91 CYG_TRACE0( true, "Resuming cyg_libc_main_thread" );
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92 cyg_libc_main_thread.resume();
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93 }
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94 CYG_REPORT_RETURN();
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95
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96 } // cyg_iso_c_start()
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97
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98 // define an object that will automatically call cyg_iso_c_start()
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99
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100 class cyg_libc_startup_dummy_constructor_class {
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101 public:
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102 cyg_libc_startup_dummy_constructor_class() { cyg_iso_c_start(); }
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103 };
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104
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105 static cyg_libc_startup_dummy_constructor_class cyg_libc_startup_obj
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106 CYGBLD_ATTRIB_INIT_AFTER(CYG_INIT_LIBC);
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107
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108 #elif defined( CYGSEM_LIBC_STARTUP_MAIN_INITCONTEXT )
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109
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110 // otherwise replace the default cyg_user_start(), but of course keep
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111 // it a weak symbol in case the user wants to override
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112
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113 externC void
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114 cyg_user_start(void) CYGBLD_ATTRIB_WEAK;
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115
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116 externC void
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117 cyg_user_start(void)
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118 {
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119 cyg_libc_invoke_main(0);
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120 }
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121
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122 externC void
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123 cyg_iso_c_start( void )
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124 {
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125 static int initialized=0;
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126
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127 CYG_REPORT_FUNCNAME( "cyg_iso_c_start" );
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128 CYG_REPORT_FUNCARGVOID();
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129
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130 // In case they want to explicitly invoke the C library from
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131 // cyg_user_start() themselves
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132 if (initialized++ == 0) {
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133 cyg_libc_invoke_main(0);
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134 }
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135 CYG_REPORT_RETURN();
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136 }
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137 #else
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138
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139 externC void
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140 cyg_iso_c_start( void ) {}
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141
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142 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
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143
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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144 // EOF cstartup.cxx