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Rev | Author | Line No. | Line |
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6068 | serge | 1 | /* |
2 | * crtdll.c |
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3 | * This file has no copyright assigned and is placed in the Public Domain. |
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4 | * This file is a part of the mingw-runtime package. |
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5 | * No warranty is given; refer to the file DISCLAIMER within the package. |
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6 | * |
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7 | * Source code for the shared libc startup proceedures. This code is compiled |
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8 | * to make libc.dll, which should be located in the library path. |
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9 | * |
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10 | */ |
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4349 | Serge | 11 | |
12 | #include <_ansi.h> |
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13 | #include |
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14 | #include |
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15 | #include |
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16 | #include |
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17 | #include |
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18 | #include |
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19 | #include |
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20 | |||
21 | struct app_hdr |
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22 | { |
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23 | char banner[8]; |
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24 | int version; |
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25 | int start; |
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26 | int iend; |
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27 | int memsize; |
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28 | int stacktop; |
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29 | char *cmdline; |
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30 | char *path; |
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6074 | serge | 31 | int __subsystem__; |
4349 | Serge | 32 | void *__idata_start; |
33 | void *__idata_end; |
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34 | int (*main)(int argc, char **argv, char **envp); |
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35 | }; |
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36 | |||
6536 | serge | 37 | extern void _pei386_runtime_relocator (void); |
38 | extern void init_loader(void *libc_image); |
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6664 | serge | 39 | extern void init_global_reent(void); |
6536 | serge | 40 | extern void init_stdio(void); |
4349 | Serge | 41 | |
6536 | serge | 42 | extern void __init_conio(void); |
43 | extern void __fini_conio(void); |
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44 | extern int link_app(void); |
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45 | extern void* get_entry_point(void *raw); |
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46 | |||
47 | extern void tls_init(void); |
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48 | |||
5190 | serge | 49 | char* __appenv; |
50 | int __appenv_size; |
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4349 | Serge | 51 | |
52 | |||
53 | char * __libc_getenv(const char *name) |
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54 | { |
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55 | return NULL; |
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56 | } |
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57 | |||
5190 | serge | 58 | static int split_cmdline(char *cmdline, char **argv) |
59 | { |
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60 | enum quote_state |
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61 | { |
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62 | QUOTE_NONE, /* no " active in current parm */ |
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63 | QUOTE_DELIMITER, /* " was first char and must be last */ |
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64 | QUOTE_STARTED /* " was seen, look for a match */ |
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65 | }; |
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4349 | Serge | 66 | |
5190 | serge | 67 | enum quote_state state; |
68 | unsigned int argc; |
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69 | char *p = cmdline; |
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70 | char *new_arg, *start; |
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4349 | Serge | 71 | |
5190 | serge | 72 | argc = 0; |
4349 | Serge | 73 | |
5190 | serge | 74 | for(;;) |
75 | { |
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76 | /* skip over spaces and tabs */ |
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77 | if ( *p ) |
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78 | { |
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79 | while (*p == ' ' || *p == '\t') |
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80 | ++p; |
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81 | } |
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4349 | Serge | 82 | |
5190 | serge | 83 | if (*p == '\0') |
84 | break; |
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85 | |||
86 | state = QUOTE_NONE; |
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87 | if( *p == '\"' ) |
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88 | { |
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89 | p++; |
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90 | state = QUOTE_DELIMITER; |
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91 | } |
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92 | new_arg = start = p; |
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93 | for (;;) |
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94 | { |
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95 | if( *p == '\"' ) |
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96 | { |
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97 | p++; |
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98 | if( state == QUOTE_NONE ) |
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99 | { |
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100 | state = QUOTE_STARTED; |
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101 | } |
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102 | else |
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103 | { |
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104 | state = QUOTE_NONE; |
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105 | } |
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106 | continue; |
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107 | } |
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108 | |||
109 | if( *p == ' ' || *p == '\t' ) |
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110 | { |
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111 | if( state == QUOTE_NONE ) |
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112 | { |
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113 | break; |
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114 | } |
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115 | } |
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116 | |||
117 | if( *p == '\0' ) |
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118 | break; |
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119 | |||
120 | if( *p == '\\' ) |
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121 | { |
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122 | if( p[1] == '\"' ) |
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123 | { |
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124 | ++p; |
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125 | if( p[-2] == '\\' ) |
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126 | { |
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127 | continue; |
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128 | } |
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129 | } |
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130 | } |
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131 | if( argv ) |
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132 | { |
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133 | *(new_arg++) = *p; |
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134 | } |
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135 | ++p; |
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136 | }; |
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137 | |||
138 | if( argv ) |
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139 | { |
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140 | argv[ argc ] = start; |
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141 | ++argc; |
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142 | |||
143 | /* |
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144 | The *new = '\0' is req'd in case there was a \" to " |
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145 | translation. It must be after the *p check against |
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146 | '\0' because new and p could point to the same char |
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147 | in which case the scan would be terminated too soon. |
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148 | */ |
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149 | |||
150 | if( *p == '\0' ) |
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151 | { |
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152 | *new_arg = '\0'; |
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153 | break; |
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154 | } |
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155 | *new_arg = '\0'; |
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156 | ++p; |
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157 | } |
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158 | else |
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159 | { |
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160 | ++argc; |
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161 | if( *p == '\0' ) |
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162 | { |
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163 | break; |
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164 | } |
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165 | ++p; |
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166 | } |
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167 | } |
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168 | |||
169 | return argc; |
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170 | }; |
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171 | |||
6536 | serge | 172 | __attribute__((noreturn)) |
173 | void libc_crt_startup (void *libc_base) |
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4349 | Serge | 174 | { |
6536 | serge | 175 | struct app_hdr *header = NULL; |
5190 | serge | 176 | int retval = 0; |
4349 | Serge | 177 | |
5190 | serge | 178 | char **argv; |
179 | int argc; |
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4349 | Serge | 180 | |
181 | _pei386_runtime_relocator(); |
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182 | |||
6536 | serge | 183 | tls_init(); |
6664 | serge | 184 | init_global_reent(); |
4921 | Serge | 185 | init_stdio(); |
6074 | serge | 186 | |
187 | if(header->__subsystem__ == 3) |
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188 | __init_conio(); |
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189 | |||
4349 | Serge | 190 | // __appenv = load_file("/sys/system.env", &__appenv_size); |
191 | |||
192 | init_loader(libc_base); |
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193 | |||
194 | if( link_app() == 0) |
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195 | goto done; |
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196 | |||
197 | if( header->cmdline[0] != 0) |
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198 | { |
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5190 | serge | 199 | argc = split_cmdline(header->cmdline, NULL) + 1; |
200 | argv = alloca((argc+1)*sizeof(char*)); |
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201 | argv[0] = header->path; |
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202 | |||
203 | split_cmdline(header->cmdline, argv + 1); |
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4349 | Serge | 204 | } |
5190 | serge | 205 | else |
206 | { |
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207 | argc = 1; |
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208 | argv = alloca((argc+1)*sizeof(char*)); |
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209 | argv[0] = header->path; |
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210 | } |
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211 | argv[argc] = NULL; |
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4349 | Serge | 212 | |
5190 | serge | 213 | retval = header->main(argc, argv, NULL); |
4349 | Serge | 214 | done: |
6074 | serge | 215 | if(header->__subsystem__ == 3) |
216 | __fini_conio(); |
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217 | |||
4349 | Serge | 218 | exit (retval); |
219 | } |
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220 |