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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 | #include |
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21 | |||
22 | struct app_hdr |
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23 | { |
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24 | char banner[8]; |
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25 | int version; |
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26 | int start; |
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27 | int iend; |
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28 | int memsize; |
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29 | int stacktop; |
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30 | char *cmdline; |
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31 | char *path; |
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6074 | serge | 32 | int __subsystem__; |
4349 | Serge | 33 | void *__idata_start; |
34 | void *__idata_end; |
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35 | int (*main)(int argc, char **argv, char **envp); |
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36 | }; |
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37 | |||
6536 | serge | 38 | extern void _pei386_runtime_relocator (void); |
39 | extern void init_loader(void *libc_image); |
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40 | extern void init_reent(void); |
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41 | extern void init_stdio(void); |
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4349 | Serge | 42 | |
6536 | serge | 43 | extern void __init_conio(void); |
44 | extern void __fini_conio(void); |
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45 | extern int link_app(void); |
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46 | extern void* get_entry_point(void *raw); |
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47 | |||
48 | extern void tls_init(void); |
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49 | |||
5190 | serge | 50 | char* __appenv; |
51 | int __appenv_size; |
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4349 | Serge | 52 | |
53 | |||
54 | char * __libc_getenv(const char *name) |
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55 | { |
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56 | return NULL; |
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57 | } |
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58 | |||
5190 | serge | 59 | static int split_cmdline(char *cmdline, char **argv) |
60 | { |
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61 | enum quote_state |
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62 | { |
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63 | QUOTE_NONE, /* no " active in current parm */ |
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64 | QUOTE_DELIMITER, /* " was first char and must be last */ |
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65 | QUOTE_STARTED /* " was seen, look for a match */ |
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66 | }; |
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4349 | Serge | 67 | |
5190 | serge | 68 | enum quote_state state; |
69 | unsigned int argc; |
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70 | char *p = cmdline; |
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71 | char *new_arg, *start; |
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4349 | Serge | 72 | |
5190 | serge | 73 | argc = 0; |
4349 | Serge | 74 | |
5190 | serge | 75 | for(;;) |
76 | { |
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77 | /* skip over spaces and tabs */ |
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78 | if ( *p ) |
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79 | { |
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80 | while (*p == ' ' || *p == '\t') |
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81 | ++p; |
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82 | } |
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4349 | Serge | 83 | |
5190 | serge | 84 | if (*p == '\0') |
85 | break; |
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86 | |||
87 | state = QUOTE_NONE; |
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88 | if( *p == '\"' ) |
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89 | { |
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90 | p++; |
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91 | state = QUOTE_DELIMITER; |
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92 | } |
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93 | new_arg = start = p; |
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94 | for (;;) |
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95 | { |
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96 | if( *p == '\"' ) |
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97 | { |
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98 | p++; |
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99 | if( state == QUOTE_NONE ) |
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100 | { |
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101 | state = QUOTE_STARTED; |
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102 | } |
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103 | else |
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104 | { |
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105 | state = QUOTE_NONE; |
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106 | } |
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107 | continue; |
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108 | } |
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109 | |||
110 | if( *p == ' ' || *p == '\t' ) |
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111 | { |
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112 | if( state == QUOTE_NONE ) |
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113 | { |
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114 | break; |
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115 | } |
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116 | } |
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117 | |||
118 | if( *p == '\0' ) |
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119 | break; |
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120 | |||
121 | if( *p == '\\' ) |
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122 | { |
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123 | if( p[1] == '\"' ) |
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124 | { |
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125 | ++p; |
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126 | if( p[-2] == '\\' ) |
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127 | { |
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128 | continue; |
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129 | } |
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130 | } |
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131 | } |
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132 | if( argv ) |
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133 | { |
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134 | *(new_arg++) = *p; |
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135 | } |
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136 | ++p; |
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137 | }; |
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138 | |||
139 | if( argv ) |
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140 | { |
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141 | argv[ argc ] = start; |
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142 | ++argc; |
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143 | |||
144 | /* |
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145 | The *new = '\0' is req'd in case there was a \" to " |
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146 | translation. It must be after the *p check against |
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147 | '\0' because new and p could point to the same char |
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148 | in which case the scan would be terminated too soon. |
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149 | */ |
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150 | |||
151 | if( *p == '\0' ) |
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152 | { |
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153 | *new_arg = '\0'; |
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154 | break; |
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155 | } |
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156 | *new_arg = '\0'; |
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157 | ++p; |
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158 | } |
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159 | else |
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160 | { |
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161 | ++argc; |
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162 | if( *p == '\0' ) |
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163 | { |
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164 | break; |
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165 | } |
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166 | ++p; |
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167 | } |
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168 | } |
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169 | |||
170 | return argc; |
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171 | }; |
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172 | |||
6536 | serge | 173 | __attribute__((noreturn)) |
174 | void libc_crt_startup (void *libc_base) |
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4349 | Serge | 175 | { |
6536 | serge | 176 | struct app_hdr *header = NULL; |
5190 | serge | 177 | int retval = 0; |
4349 | Serge | 178 | |
5190 | serge | 179 | char **argv; |
180 | int argc; |
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4349 | Serge | 181 | |
182 | _pei386_runtime_relocator(); |
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183 | |||
6536 | serge | 184 | tls_init(); |
4349 | Serge | 185 | init_reent(); |
4921 | Serge | 186 | init_stdio(); |
6074 | serge | 187 | |
188 | if(header->__subsystem__ == 3) |
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189 | __init_conio(); |
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190 | |||
4349 | Serge | 191 | // __appenv = load_file("/sys/system.env", &__appenv_size); |
192 | |||
193 | init_loader(libc_base); |
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194 | |||
195 | if( link_app() == 0) |
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196 | goto done; |
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197 | |||
198 | if( header->cmdline[0] != 0) |
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199 | { |
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5190 | serge | 200 | argc = split_cmdline(header->cmdline, NULL) + 1; |
201 | argv = alloca((argc+1)*sizeof(char*)); |
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202 | argv[0] = header->path; |
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203 | |||
204 | split_cmdline(header->cmdline, argv + 1); |
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4349 | Serge | 205 | } |
5190 | serge | 206 | else |
207 | { |
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208 | argc = 1; |
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209 | argv = alloca((argc+1)*sizeof(char*)); |
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210 | argv[0] = header->path; |
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211 | } |
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212 | argv[argc] = NULL; |
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4349 | Serge | 213 | |
5190 | serge | 214 | retval = header->main(argc, argv, NULL); |
4349 | Serge | 215 | done: |
6074 | serge | 216 | if(header->__subsystem__ == 3) |
217 | __fini_conio(); |
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218 | |||
4349 | Serge | 219 | exit (retval); |
220 | } |
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221 |