1 | /*####################################################################### |
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2 | # RDOS operating system |
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3 | # Copyright (C) 1988-2006, Leif Ekblad |
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4 | # |
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5 | # This library is free software; you can redistribute it and/or modify |
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6 | # it under the terms of the GNU Lesser General Public License as published |
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7 | # by the Free Software Foundation; either version 2.1 of the License, or |
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8 | # (at your option) any later version. |
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9 | # |
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10 | # This library is distributed in the hope that it will be useful, |
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11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | # GNU Lesser General Public License for more details. |
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14 | # |
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15 | # You should have received a copy of the GNU Lesser General Public |
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16 | # License along with this library; if not, write to the Free Software |
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17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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18 | # |
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19 | # The author of this program may be contacted at leif@rdos.net |
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20 | # |
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21 | # rdoshelp.c |
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22 | # implementation of various structures and helpers |
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23 | # |
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24 | ##########################################################################*/ |
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25 | |
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26 | #include <reent.h> |
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27 | #include <rdos.h> |
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28 | #include <stdio.h> |
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29 | |
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30 | char *__env[1] = { 0 }; |
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31 | char **environ = __env; |
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32 | |
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33 | static int once_section; |
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34 | static int key_section; |
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35 | |
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36 | /*########################################################################## |
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37 | # |
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38 | # Name : _get_impure_data_size |
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39 | # |
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40 | # Purpose....: Get size of _reent structure |
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41 | # |
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42 | # In params..: * |
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43 | # Out params.: * |
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44 | # Returns....: size |
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45 | # |
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46 | ##########################################################################*/ |
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47 | int get_impure_data_size() |
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48 | { |
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49 | return sizeof(struct _reent); |
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50 | } |
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51 | |
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52 | /*########################################################################## |
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53 | # |
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54 | # Name : __rdos_thread_once |
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55 | # |
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56 | # Purpose....: Emulate GCC pthread_once |
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57 | # |
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58 | # In params..: Handle initially 0 |
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59 | # : function to initially call |
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60 | # Out params.: * |
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61 | # Returns....: result |
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62 | # |
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63 | ##########################################################################*/ |
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64 | int __rdos_thread_once (int *handle, void (*func) (void)) |
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65 | { |
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66 | if (handle == 0 || func == 0) |
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67 | return 0; |
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68 | |
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69 | RdosEnterSection(once_section); |
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70 | if (*handle == 0) |
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71 | (*func)(); |
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72 | else |
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73 | *handle = 1; |
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74 | RdosLeaveSection(once_section); |
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75 | return 0; |
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76 | } |
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77 | |
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78 | /*########################################################################## |
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79 | # |
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80 | # Name : __rdos_thread_mutex_init |
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81 | # |
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82 | # Purpose....: Emulate GCC pthread_thread_mutex_init |
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83 | # |
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84 | # In params..: * |
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85 | # Out params.: * |
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86 | # Returns....: handle |
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87 | # |
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88 | ##########################################################################*/ |
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89 | int __rdos_thread_mutex_init (void) |
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90 | { |
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91 | return RdosCreateSection(); |
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92 | } |
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93 | |
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94 | /*########################################################################## |
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95 | # |
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96 | # Name : __rdos_thread_mutex_lock |
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97 | # |
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98 | # Purpose....: Emulate GCC pthread_thread_mutex_lock |
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99 | # |
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100 | # In params..: handle |
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101 | # Out params.: * |
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102 | # Returns....: * |
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103 | # |
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104 | ##########################################################################*/ |
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105 | int __rdos_thread_mutex_lock (int handle) |
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106 | { |
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107 | RdosEnterSection(handle); |
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108 | return 0; |
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109 | } |
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110 | |
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111 | /*########################################################################## |
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112 | # |
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113 | # Name : __rdos_thread_mutex_trylock |
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114 | # |
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115 | # Purpose....: Emulate GCC pthread_thread_mutex_trylock |
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116 | # Try is not yet implemented, and lock is used. |
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117 | # |
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118 | # In params..: handle |
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119 | # Out params.: * |
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120 | # Returns....: * |
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121 | # |
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122 | ##########################################################################*/ |
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123 | int __rdos_thread_mutex_trylock (int handle) |
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124 | { |
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125 | RdosEnterSection(handle); |
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126 | return 0; |
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127 | } |
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128 | |
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129 | /*########################################################################## |
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130 | # |
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131 | # Name : __rdos_thread_mutex_unlock |
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132 | # |
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133 | # Purpose....: Emulate GCC pthread_thread_mutex_unlock |
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134 | # |
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135 | # In params..: handle |
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136 | # Out params.: * |
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137 | # Returns....: * |
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138 | # |
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139 | ##########################################################################*/ |
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140 | int __rdos_thread_mutex_unlock (int handle) |
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141 | { |
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142 | RdosLeaveSection(handle); |
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143 | return 0; |
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144 | } |
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145 | |
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146 | /*########################################################################## |
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147 | # |
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148 | # Name : __init_rdos |
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149 | # |
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150 | # Purpose....: Init RDOS specific data |
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151 | # |
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152 | # In params..: reent structure |
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153 | # Out params.: * |
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154 | # Returns....: * |
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155 | # |
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156 | ##########################################################################*/ |
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157 | void __init_rdos(struct _reent *reent) |
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158 | { |
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159 | once_section = RdosCreateSection(); |
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160 | _REENT_INIT_PTR(reent); |
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161 | __sinit(reent); |
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162 | } |
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