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annotate src/loadso/macosx/SDL_dlcompat.c @ 1687:d36048e8e302 SDL-1.3
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 18 Jun 2006 13:54:27 +0000 |
| parents | 4da1ee79c9af |
| children |
| rev | line source |
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| 1659 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997-2006 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Lesser General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2.1 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Lesser General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Lesser General Public | |
| 16 License along with this library; if not, write to the Free Software | |
| 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
| 22 #include "SDL_config.h" | |
| 23 | |
| 24 #ifdef SDL_LOADSO_DLCOMPAT | |
| 25 | |
| 26 /* Please note that dlcompat apparently ships in current Mac OS X versions | |
| 27 * as a system library that provides compatibility with the Unix "dlopen" | |
| 28 * interface. In order to allow SDL to work on older OS X releases and also | |
| 29 * not conflict with the system lib on newer versions, we include dlcompat | |
| 30 * in SDL and change the symbols to prevent symbol clash with any existing | |
| 31 * system libraries. --ryan. | |
| 32 */ | |
| 33 | |
| 34 /* here is the dlcompat license: */ | |
| 35 | |
| 36 /* | |
| 37 Copyright (c) 2002 Jorge Acereda <jacereda@users.sourceforge.net> & | |
| 38 Peter O'Gorman <ogorman@users.sourceforge.net> | |
| 39 | |
| 40 Portions may be copyright others, see the AUTHORS file included with this | |
| 41 distribution. | |
| 42 | |
| 43 Maintained by Peter O'Gorman <ogorman@users.sourceforge.net> | |
| 44 | |
| 45 Bug Reports and other queries should go to <ogorman@users.sourceforge.net> | |
| 46 | |
| 47 Permission is hereby granted, free of charge, to any person obtaining | |
| 48 a copy of this software and associated documentation files (the | |
| 49 "Software"), to deal in the Software without restriction, including | |
| 50 without limitation the rights to use, copy, modify, merge, publish, | |
| 51 distribute, sublicense, and/or sell copies of the Software, and to | |
| 52 permit persons to whom the Software is furnished to do so, subject to | |
| 53 the following conditions: | |
| 54 | |
| 55 The above copyright notice and this permission notice shall be | |
| 56 included in all copies or substantial portions of the Software. | |
| 57 | |
| 58 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| 59 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 60 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| 61 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | |
| 62 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
| 63 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| 64 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 65 */ | |
| 66 | |
| 67 #include <pthread.h> | |
| 68 #include <sys/types.h> | |
| 69 #include <sys/stat.h> | |
| 70 #include <stdarg.h> | |
| 71 #include <limits.h> | |
| 72 #include <mach-o/dyld.h> | |
| 73 #include <mach-o/nlist.h> | |
| 74 #include <mach-o/getsect.h> | |
| 75 | |
| 76 #include "SDL_stdinc.h" | |
| 77 | |
| 78 /* Just playing to see if it would compile with the freebsd headers, it does, | |
| 79 * but because of the different values for RTLD_LOCAL etc, it would break binary | |
| 80 * compat... oh well | |
| 81 */ | |
| 82 #ifndef __BSD_VISIBLE | |
| 83 #define __BSD_VISIBLE 1 | |
| 84 #endif | |
| 85 | |
| 86 /*include "dlfcn.h"*/ | |
| 87 #ifdef __cplusplus | |
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88 extern "C" |
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89 { |
| 1659 | 90 #endif |
| 91 | |
| 92 #if defined (__GNUC__) && __GNUC__ > 3 | |
| 93 #define dl_restrict __restrict | |
| 94 #else | |
| 95 #define dl_restrict | |
| 96 #endif | |
| 97 | |
| 98 #if 0 | |
| 99 #ifndef _POSIX_SOURCE | |
| 100 /* | |
| 101 * Structure filled in by dladdr(). | |
| 102 */ | |
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103 typedef struct SDL_OSX_dl_info |
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104 { |
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105 const char *dli_fname; /* Pathname of shared object */ |
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106 void *dli_fbase; /* Base address of shared object */ |
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107 const char *dli_sname; /* Name of nearest symbol */ |
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108 void *dli_saddr; /* Address of nearest symbol */ |
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109 } SDL_OSX_Dl_info; |
| 1659 | 110 |
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111 static int SDL_OSX_dladdr(const void *dl_restrict, |
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112 SDL_OSX_Dl_info * dl_restrict); |
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113 #endif /* ! _POSIX_SOURCE */ |
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114 #endif /* 0 */ |
| 1659 | 115 |
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116 static int SDL_OSX_dlclose(void *handle); |
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117 static const char *SDL_OSX_dlerror(void); |
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118 static void *SDL_OSX_dlopen(const char *path, int mode); |
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119 static void *SDL_OSX_dlsym(void *dl_restrict handle, |
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120 const char *dl_restrict symbol); |
| 1659 | 121 |
| 122 #define RTLD_LAZY 0x1 | |
| 123 #define RTLD_NOW 0x2 | |
| 124 #define RTLD_LOCAL 0x4 | |
| 125 #define RTLD_GLOBAL 0x8 | |
| 126 | |
| 127 #ifndef _POSIX_SOURCE | |
| 128 #define RTLD_NOLOAD 0x10 | |
| 129 #define RTLD_NODELETE 0x80 | |
| 130 | |
| 131 /* | |
| 132 * Special handle arguments for SDL_OSX_dlsym(). | |
| 133 */ | |
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134 #define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */ |
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135 #define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */ |
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136 #endif /* ! _POSIX_SOURCE */ |
| 1659 | 137 |
| 138 #ifdef __cplusplus | |
| 139 } | |
| 140 #endif | |
| 141 | |
| 142 #ifndef dl_restrict | |
| 143 #define dl_restrict __restrict | |
| 144 #endif | |
| 145 /* This is not available on 10.1 */ | |
| 146 #ifndef LC_LOAD_WEAK_DYLIB | |
| 147 #define LC_LOAD_WEAK_DYLIB (0x18 | LC_REQ_DYLD) | |
| 148 #endif | |
| 149 | |
| 150 /* With this stuff here, this thing may actually compile/run on 10.0 systems | |
| 151 * Not that I have a 10.0 system to test it on anylonger | |
| 152 */ | |
| 153 #ifndef LC_REQ_DYLD | |
| 154 #define LC_REQ_DYLD 0x80000000 | |
| 155 #endif | |
| 156 #ifndef NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED | |
| 157 #define NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED 0x4 | |
| 158 #endif | |
| 159 #ifndef NSADDIMAGE_OPTION_RETURN_ON_ERROR | |
| 160 #define NSADDIMAGE_OPTION_RETURN_ON_ERROR 0x1 | |
| 161 #endif | |
| 162 #ifndef NSLOOKUPSYMBOLINIMAGE_OPTION_BIND | |
| 163 #define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND 0x0 | |
| 164 #endif | |
| 165 #ifndef NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR | |
| 166 #define NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR 0x4 | |
| 167 #endif | |
| 168 /* These symbols will be looked for in dyld */ | |
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169 static const struct mach_header *(*dyld_NSAddImage) (const char *, |
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170 unsigned long) = 0; |
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171 static int (*dyld_NSIsSymbolNameDefinedInImage) (const struct mach_header *, |
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172 const char *) = 0; |
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173 static NSSymbol(*dyld_NSLookupSymbolInImage) (const struct mach_header *, |
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174 const char *, unsigned long) = |
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175 0; |
| 1659 | 176 |
| 177 /* Define this to make dlcompat reuse data block. This way in theory we save | |
| 178 * a little bit of overhead. However we then couldn't correctly catch excess | |
| 179 * calls to SDL_OSX_dlclose(). Hence we don't use this feature | |
| 180 */ | |
| 181 #undef REUSE_STATUS | |
| 182 | |
| 183 /* Size of the internal error message buffer (used by dlerror()) */ | |
| 184 #define ERR_STR_LEN 251 | |
| 185 | |
| 186 /* Maximum number of search paths supported by getSearchPath */ | |
| 187 #define MAX_SEARCH_PATHS 32 | |
| 188 | |
| 189 | |
| 190 #define MAGIC_DYLIB_OFI ((NSObjectFileImage) 'DYOF') | |
| 191 #define MAGIC_DYLIB_MOD ((NSModule) 'DYMO') | |
| 192 | |
| 193 /* internal flags */ | |
| 194 #define DL_IN_LIST 0x01 | |
| 195 | |
| 196 /* our mutex */ | |
| 197 static pthread_mutex_t dlcompat_mutex; | |
| 198 /* Our thread specific storage | |
| 199 */ | |
| 200 static pthread_key_t dlerror_key; | |
| 201 | |
| 202 struct dlthread | |
| 203 { | |
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204 int lockcnt; |
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205 unsigned char errset; |
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206 char errstr[ERR_STR_LEN]; |
| 1659 | 207 }; |
| 208 | |
| 209 /* This is our central data structure. Whenever a module is loaded via | |
| 210 * SDL_OSX_dlopen(), we create such a struct. | |
| 211 */ | |
| 212 struct dlstatus | |
| 213 { | |
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214 struct dlstatus *next; /* pointer to next element in the linked list */ |
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215 NSModule module; |
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216 const struct mach_header *lib; |
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217 int refs; /* reference count */ |
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218 int mode; /* mode in which this module was loaded */ |
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219 dev_t device; |
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220 ino_t inode; |
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221 int flags; /* Any internal flags we may need */ |
| 1659 | 222 }; |
| 223 | |
| 224 /* Head node of the dlstatus list */ | |
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225 static struct dlstatus mainStatus = |
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226 { 0, MAGIC_DYLIB_MOD, NULL, -1, RTLD_GLOBAL, 0, 0, 0 }; |
| 1659 | 227 static struct dlstatus *stqueue = &mainStatus; |
| 228 | |
| 229 | |
| 230 /* Storage for the last error message (used by dlerror()) */ | |
| 231 /* static char err_str[ERR_STR_LEN]; */ | |
| 232 /* static int err_filled = 0; */ | |
| 233 | |
| 234 /* Prototypes to internal functions */ | |
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235 static void debug(const char *fmt, ...); |
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236 static void error(const char *str, ...); |
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237 static const char *safegetenv(const char *s); |
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238 static const char *searchList(void); |
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239 static const char *getSearchPath(int i); |
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240 static const char *getFullPath(int i, const char *file); |
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241 static const struct stat *findFile(const char *file, const char **fullPath); |
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242 static int isValidStatus(struct dlstatus *status); |
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243 static inline int isFlagSet(int mode, int flag); |
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244 static struct dlstatus *lookupStatus(const struct stat *sbuf); |
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245 static void insertStatus(struct dlstatus *dls, const struct stat *sbuf); |
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246 static int promoteLocalToGlobal(struct dlstatus *dls); |
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247 static void *reference(struct dlstatus *dls, int mode); |
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248 static void *dlsymIntern(struct dlstatus *dls, const char *symbol, |
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249 int canSetError); |
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250 static struct dlstatus *allocStatus(void); |
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251 static struct dlstatus *loadModule(const char *path, const struct stat *sbuf, |
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252 int mode); |
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253 static NSSymbol search_linked_libs(const struct mach_header *mh, |
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254 const char *symbol); |
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255 static const char *get_lib_name(const struct mach_header *mh); |
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256 static const struct mach_header *get_mach_header_from_NSModule(NSModule mod); |
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257 static void dlcompat_init_func(void); |
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258 static inline void dlcompat_init_check(void); |
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259 static inline void dolock(void); |
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260 static inline void dounlock(void); |
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261 static void dlerrorfree(void *data); |
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262 static void resetdlerror(void); |
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263 static const struct mach_header *my_find_image(const char *name); |
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264 static const struct mach_header *image_for_address(const void *address); |
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265 static inline char *dyld_error_str(void); |
| 1659 | 266 |
| 267 #if FINK_BUILD | |
| 268 /* Two Global Functions */ | |
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269 static void *dlsym_prepend_underscore(void *handle, const char *symbol); |
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270 static void *dlsym_auto_underscore(void *handle, const char *symbol); |
| 1659 | 271 |
| 272 /* And their _intern counterparts */ | |
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273 static void *dlsym_prepend_underscore_intern(void *handle, |
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274 const char *symbol); |
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275 static void *dlsym_auto_underscore_intern(void *handle, const char *symbol); |
| 1659 | 276 #endif |
| 277 | |
| 278 /* Functions */ | |
| 279 | |
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280 static void |
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281 debug(const char *fmt, ...) |
| 1659 | 282 { |
| 283 #if DEBUG > 1 | |
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284 va_list arg; |
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285 va_start(arg, fmt); |
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286 fprintf(stderr, "DLDEBUG: "); |
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287 vfprintf(stderr, fmt, arg); |
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288 fprintf(stderr, "\n"); |
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289 fflush(stderr); |
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290 va_end(arg); |
| 1659 | 291 #endif |
| 292 } | |
| 293 | |
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294 static void |
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295 error(const char *str, ...) |
| 1659 | 296 { |
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297 va_list arg; |
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298 struct dlthread *tss; |
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299 char *err_str; |
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300 va_start(arg, str); |
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301 tss = pthread_getspecific(dlerror_key); |
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302 err_str = tss->errstr; |
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303 SDL_strlcpy(err_str, "dlcompat: ", ERR_STR_LEN); |
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304 vsnprintf(err_str + 10, ERR_STR_LEN - 10, str, arg); |
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305 va_end(arg); |
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306 debug("ERROR: %s\n", err_str); |
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307 tss->errset = 1; |
| 1659 | 308 } |
| 309 | |
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310 static void |
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311 warning(const char *str) |
| 1659 | 312 { |
| 313 #if DEBUG > 0 | |
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314 fprintf(stderr, "WARNING: dlcompat: %s\n", str); |
| 1659 | 315 #endif |
| 316 } | |
| 317 | |
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318 static const char * |
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319 safegetenv(const char *s) |
| 1659 | 320 { |
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321 const char *ss = SDL_getenv(s); |
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322 return ss ? ss : ""; |
| 1659 | 323 } |
| 324 | |
| 325 /* because this is only used for debugging and error reporting functions, we | |
| 326 * don't really care about how elegant it is... it could use the load | |
| 327 * commands to find the install name of the library, but... | |
| 328 */ | |
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329 static const char * |
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330 get_lib_name(const struct mach_header *mh) |
| 1659 | 331 { |
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332 unsigned long count = _dyld_image_count(); |
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333 unsigned long i; |
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334 const char *val = NULL; |
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335 if (mh) { |
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336 for (i = 0; i < count; i++) { |
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337 if (mh == _dyld_get_image_header(i)) { |
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338 val = _dyld_get_image_name(i); |
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339 break; |
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340 } |
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341 } |
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342 } |
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343 return val; |
| 1659 | 344 } |
| 345 | |
| 346 /* Returns the mach_header for the module bu going through all the loaded images | |
| 347 * and finding the one with the same name as the module. There really ought to be | |
| 348 * an api for doing this, would be faster, but there isn't one right now | |
| 349 */ | |
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350 static const struct mach_header * |
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351 get_mach_header_from_NSModule(NSModule mod) |
| 1659 | 352 { |
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353 const char *mod_name = NSNameOfModule(mod); |
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354 const struct mach_header *mh = NULL; |
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355 unsigned long count = _dyld_image_count(); |
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356 unsigned long i; |
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357 debug("Module name: %s", mod_name); |
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358 for (i = 0; i < count; i++) { |
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359 if (!SDL_strcmp(mod_name, _dyld_get_image_name(i))) { |
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360 mh = _dyld_get_image_header(i); |
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361 break; |
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362 } |
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363 } |
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364 return mh; |
| 1659 | 365 } |
| 366 | |
| 367 | |
| 368 /* Compute and return a list of all directories that we should search when | |
| 369 * trying to locate a module. We first look at the values of LD_LIBRARY_PATH | |
| 370 * and DYLD_LIBRARY_PATH, and then finally fall back to looking into | |
| 371 * /usr/lib and /lib. Since both of the environments variables can contain a | |
| 372 * list of colon seperated paths, we simply concat them and the two other paths | |
| 373 * into one big string, which we then can easily parse. | |
| 374 * Splitting this string into the actual path list is done by getSearchPath() | |
| 375 */ | |
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376 static const char * |
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377 searchList() |
| 1659 | 378 { |
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379 size_t buf_size; |
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380 static char *buf = NULL; |
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381 const char *ldlp = safegetenv("LD_LIBRARY_PATH"); |
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382 const char *dyldlp = safegetenv("DYLD_LIBRARY_PATH"); |
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383 const char *stdpath = SDL_getenv("DYLD_FALLBACK_LIBRARY_PATH"); |
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384 if (!stdpath) |
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385 stdpath = "/usr/local/lib:/lib:/usr/lib"; |
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386 if (!buf) { |
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387 buf_size = |
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388 SDL_strlen(ldlp) + SDL_strlen(dyldlp) + SDL_strlen(stdpath) + 4; |
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389 buf = SDL_malloc(buf_size); |
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390 SDL_snprintf(buf, buf_size, "%s%s%s%s%s%c", dyldlp, |
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391 (dyldlp[0] ? ":" : ""), ldlp, (ldlp[0] ? ":" : ""), |
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392 stdpath, '\0'); |
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393 } |
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394 return buf; |
| 1659 | 395 } |
| 396 | |
| 397 /* Returns the ith search path from the list as computed by searchList() */ | |
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398 static const char * |
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399 getSearchPath(int i) |
| 1659 | 400 { |
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401 static const char *list = 0; |
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402 static char **path = (char **) 0; |
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403 static int end = 0; |
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404 static int numsize = MAX_SEARCH_PATHS; |
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405 static char **tmp; |
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406 /* So we can call SDL_free() in the "destructor" we use i=-1 to return the alloc'd array */ |
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407 if (i == -1) { |
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408 return (const char *) path; |
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409 } |
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410 if (!path) { |
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411 path = (char **) SDL_calloc(MAX_SEARCH_PATHS, sizeof(char **)); |
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412 } |
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413 if (!list && !end) |
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414 list = searchList(); |
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415 if (i >= (numsize)) { |
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416 debug("Increasing size for long PATH"); |
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417 tmp = |
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418 (char **) SDL_calloc((MAX_SEARCH_PATHS + numsize), |
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419 sizeof(char **)); |
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420 if (tmp) { |
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421 SDL_memcpy(tmp, path, sizeof(char **) * numsize); |
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422 SDL_free(path); |
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423 path = tmp; |
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424 numsize += MAX_SEARCH_PATHS; |
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425 } else { |
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426 return 0; |
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427 } |
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428 } |
| 1659 | 429 |
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430 while (!path[i] && !end) { |
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431 path[i] = strsep((char **) &list, ":"); |
| 1659 | 432 |
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433 if (path[i][0] == 0) |
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434 path[i] = 0; |
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435 end = (list == 0); |
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436 } |
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437 return path[i]; |
| 1659 | 438 } |
| 439 | |
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440 static const char * |
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441 getFullPath(int i, const char *file) |
| 1659 | 442 { |
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443 static char buf[PATH_MAX]; |
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444 const char *path = getSearchPath(i); |
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445 if (path) { |
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446 SDL_snprintf(buf, PATH_MAX, "%s/%s", path, file); |
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447 } |
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448 return path ? buf : 0; |
| 1659 | 449 } |
| 450 | |
| 451 /* Given a file name, try to determine the full path for that file. Starts | |
| 452 * its search in the current directory, and then tries all paths in the | |
| 453 * search list in the order they are specified there. | |
| 454 */ | |
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455 static const struct stat * |
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456 findFile(const char *file, const char **fullPath) |
| 1659 | 457 { |
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458 int i = 0; |
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459 static struct stat sbuf; |
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460 char *fileName; |
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461 debug("finding file %s", file); |
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462 *fullPath = file; |
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463 if (0 == stat(file, &sbuf)) |
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464 return &sbuf; |
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465 if (SDL_strchr(file, '/')) |
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466 return 0; /* If the path had a / we don't look in env var places */ |
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467 fileName = NULL; |
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468 if (!fileName) |
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469 fileName = (char *) file; |
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470 while ((*fullPath = getFullPath(i++, fileName))) { |
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471 if (0 == stat(*fullPath, &sbuf)) |
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472 return &sbuf; |
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473 } |
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474 ; |
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475 return 0; |
| 1659 | 476 } |
| 477 | |
| 478 /* Determine whether a given dlstatus is valid or not */ | |
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479 static int |
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480 isValidStatus(struct dlstatus *status) |
| 1659 | 481 { |
|
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482 /* Walk the list to verify status is contained in it */ |
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483 struct dlstatus *dls = stqueue; |
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484 while (dls && status != dls) |
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485 dls = dls->next; |
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486 if (dls == 0) |
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487 error("invalid handle"); |
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488 else if ((dls->module == 0) || (dls->refs == 0)) |
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489 error("handle to closed library"); |
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490 else |
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491 return TRUE; |
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492 return FALSE; |
| 1659 | 493 } |
| 494 | |
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495 static inline int |
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496 isFlagSet(int mode, int flag) |
| 1659 | 497 { |
|
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498 return (mode & flag) == flag; |
| 1659 | 499 } |
| 500 | |
|
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501 static struct dlstatus * |
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502 lookupStatus(const struct stat *sbuf) |
| 1659 | 503 { |
|
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504 struct dlstatus *dls = stqueue; |
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505 debug("looking for status"); |
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506 while (dls && ( /* isFlagSet(dls->mode, RTLD_UNSHARED) */ 0 |
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507 || sbuf->st_dev != dls->device |
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508 || sbuf->st_ino != dls->inode)) |
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509 dls = dls->next; |
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510 return dls; |
| 1659 | 511 } |
| 512 | |
|
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513 static void |
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514 insertStatus(struct dlstatus *dls, const struct stat *sbuf) |
| 1659 | 515 { |
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516 debug("inserting status"); |
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517 dls->inode = sbuf->st_ino; |
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518 dls->device = sbuf->st_dev; |
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519 dls->refs = 0; |
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520 dls->mode = 0; |
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521 if ((dls->flags & DL_IN_LIST) == 0) { |
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522 dls->next = stqueue; |
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523 stqueue = dls; |
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524 dls->flags |= DL_IN_LIST; |
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525 } |
| 1659 | 526 } |
| 527 | |
|
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528 static struct dlstatus * |
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529 allocStatus() |
| 1659 | 530 { |
|
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531 struct dlstatus *dls; |
| 1659 | 532 #ifdef REUSE_STATUS |
|
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533 dls = stqueue; |
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534 while (dls && dls->module) |
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535 dls = dls->next; |
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536 if (!dls) |
| 1659 | 537 #endif |
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538 dls = SDL_calloc(sizeof(*dls), 1); |
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539 return dls; |
| 1659 | 540 } |
| 541 | |
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542 static int |
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543 promoteLocalToGlobal(struct dlstatus *dls) |
| 1659 | 544 { |
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545 static int (*p) (NSModule module) = 0; |
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546 debug("promoting"); |
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547 if (!p) |
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548 _dyld_func_lookup("__dyld_NSMakePrivateModulePublic", (void **) &p); |
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549 return (dls->module == MAGIC_DYLIB_MOD) || (p && p(dls->module)); |
| 1659 | 550 } |
| 551 | |
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552 static void * |
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553 reference(struct dlstatus *dls, int mode) |
| 1659 | 554 { |
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555 if (dls) { |
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556 if (dls->module == MAGIC_DYLIB_MOD && isFlagSet(mode, RTLD_LOCAL)) { |
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557 warning("trying to open a .dylib with RTLD_LOCAL"); |
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558 error("unable to open a .dylib with RTLD_LOCAL"); |
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559 return NULL; |
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560 } |
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561 if (isFlagSet(mode, RTLD_GLOBAL) && !isFlagSet(dls->mode, RTLD_GLOBAL) |
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562 && !promoteLocalToGlobal(dls)) { |
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563 error("unable to promote local module to global"); |
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564 return NULL; |
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565 } |
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566 dls->mode |= mode; |
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567 dls->refs++; |
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568 } else |
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569 debug("reference called with NULL argument"); |
| 1659 | 570 |
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571 return dls; |
| 1659 | 572 } |
| 573 | |
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574 static const struct mach_header * |
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575 my_find_image(const char *name) |
| 1659 | 576 { |
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577 const struct mach_header *mh = 0; |
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578 const char *id = NULL; |
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579 int i = _dyld_image_count(); |
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580 int j; |
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581 mh = (struct mach_header *) |
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582 dyld_NSAddImage(name, NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED | |
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583 NSADDIMAGE_OPTION_RETURN_ON_ERROR); |
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584 if (!mh) { |
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585 for (j = 0; j < i; j++) { |
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586 id = _dyld_get_image_name(j); |
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587 if (!SDL_strcmp(id, name)) { |
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588 mh = _dyld_get_image_header(j); |
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589 break; |
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590 } |
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591 } |
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592 } |
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593 return mh; |
| 1659 | 594 } |
| 595 | |
| 596 /* | |
| 597 * dyld adds libraries by first adding the directly dependant libraries in link order, and | |
| 598 * then adding the dependencies for those libraries, so we should do the same... but we don't | |
| 599 * bother adding the extra dependencies, if the symbols are neither in the loaded image nor | |
| 600 * any of it's direct dependencies, then it probably isn't there. | |
| 601 */ | |
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602 static NSSymbol |
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603 search_linked_libs(const struct mach_header *mh, const char *symbol) |
| 1659 | 604 { |
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605 unsigned int n; |
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606 struct load_command *lc = 0; |
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607 struct mach_header *wh; |
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608 NSSymbol nssym = 0; |
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609 if (dyld_NSAddImage && dyld_NSIsSymbolNameDefinedInImage |
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610 && dyld_NSLookupSymbolInImage) { |
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611 lc = (struct load_command *) ((char *) mh + |
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612 sizeof(struct mach_header)); |
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613 for (n = 0; n < mh->ncmds; |
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614 n++, lc = (struct load_command *) ((char *) lc + lc->cmdsize)) { |
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615 if ((LC_LOAD_DYLIB == lc->cmd) |
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616 || (LC_LOAD_WEAK_DYLIB == lc->cmd)) { |
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617 if ((wh = (struct mach_header *) |
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618 my_find_image((char |
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619 *) (((struct dylib_command *) lc)-> |
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620 dylib.name.offset + (char *) lc)))) { |
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621 if (dyld_NSIsSymbolNameDefinedInImage(wh, symbol)) { |
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622 nssym = dyld_NSLookupSymbolInImage(wh, |
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623 symbol, |
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624 NSLOOKUPSYMBOLINIMAGE_OPTION_BIND |
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625 | |
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626 NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR); |
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627 break; |
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628 } |
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629 } |
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630 } |
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631 } |
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632 if ((!nssym) && NSIsSymbolNameDefined(symbol)) { |
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633 /* I've never seen this debug message... */ |
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634 debug("Symbol \"%s\" is defined but was not found", symbol); |
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635 } |
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636 } |
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637 return nssym; |
| 1659 | 638 } |
| 639 | |
| 640 /* Up to the caller to SDL_free() returned string */ | |
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641 static inline char * |
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642 dyld_error_str() |
| 1659 | 643 { |
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644 NSLinkEditErrors dylder; |
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645 int dylderno; |
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646 const char *dylderrstr; |
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647 const char *dyldfile; |
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648 char *retStr = NULL; |
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649 NSLinkEditError(&dylder, &dylderno, &dyldfile, &dylderrstr); |
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650 if (dylderrstr && *dylderrstr) { |
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651 retStr = SDL_strdup(dylderrstr); |
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652 } |
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653 return retStr; |
| 1659 | 654 } |
| 655 | |
|
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656 static void * |
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657 dlsymIntern(struct dlstatus *dls, const char *symbol, int canSetError) |
| 1659 | 658 { |
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659 NSSymbol nssym = 0; |
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660 #ifdef __GCC__ |
|
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661 void *caller = __builtin_return_address(1); /* Be *very* careful about inlining */ |
| 1659 | 662 #else |
|
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663 void *caller = NULL; |
| 1659 | 664 #endif |
|
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665 const struct mach_header *caller_mh = 0; |
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666 char *savedErrorStr = NULL; |
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667 resetdlerror(); |
| 1659 | 668 #ifndef RTLD_SELF |
| 669 #define RTLD_SELF ((void *) -3) | |
| 670 #endif | |
|
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671 if (NULL == dls) |
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672 dls = RTLD_SELF; |
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673 if ((RTLD_NEXT == dls) || (RTLD_SELF == dls)) { |
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674 if (dyld_NSIsSymbolNameDefinedInImage && dyld_NSLookupSymbolInImage |
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675 && caller) { |
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676 caller_mh = image_for_address(caller); |
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677 if (RTLD_SELF == dls) { |
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678 /* FIXME: We should be using the NSModule api, if SELF is an MH_BUNDLE |
|
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679 * But it appears to work anyway, and looking at the code in dyld_libfuncs.c |
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680 * this is acceptable. |
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681 */ |
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682 if (dyld_NSIsSymbolNameDefinedInImage(caller_mh, symbol)) { |
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683 nssym = dyld_NSLookupSymbolInImage(caller_mh, |
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684 symbol, |
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685 NSLOOKUPSYMBOLINIMAGE_OPTION_BIND |
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686 | |
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687 NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR); |
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688 } |
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689 } |
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690 if (!nssym) { |
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691 if (RTLD_SELF == dls) |
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692 savedErrorStr = dyld_error_str(); |
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693 nssym = search_linked_libs(caller_mh, symbol); |
|
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694 } |
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695 } else { |
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696 if (canSetError) |
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697 error("RTLD_SELF and RTLD_NEXT are not supported"); |
|
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698 return NULL; |
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699 } |
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700 } |
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701 if (!nssym) { |
| 1659 | 702 |
|
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703 if (RTLD_DEFAULT == dls) { |
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704 dls = &mainStatus; |
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705 } |
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706 if (!isValidStatus(dls)) |
|
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707 return NULL; |
| 1659 | 708 |
|
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709 if (dls->module != MAGIC_DYLIB_MOD) { |
|
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710 nssym = NSLookupSymbolInModule(dls->module, symbol); |
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711 if (!nssym && NSIsSymbolNameDefined(symbol)) { |
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712 debug("Searching dependencies"); |
|
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713 savedErrorStr = dyld_error_str(); |
|
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|
714 nssym = |
|
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715 search_linked_libs(get_mach_header_from_NSModule |
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716 (dls->module), symbol); |
|
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|
717 } |
|
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718 } else if (dls->lib && dyld_NSIsSymbolNameDefinedInImage |
|
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|
719 && dyld_NSLookupSymbolInImage) { |
|
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720 if (dyld_NSIsSymbolNameDefinedInImage(dls->lib, symbol)) { |
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721 nssym = dyld_NSLookupSymbolInImage(dls->lib, |
|
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722 symbol, |
|
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|
723 NSLOOKUPSYMBOLINIMAGE_OPTION_BIND |
|
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724 | |
|
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725 NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR); |
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726 } else if (NSIsSymbolNameDefined(symbol)) { |
|
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|
727 debug("Searching dependencies"); |
|
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|
728 savedErrorStr = dyld_error_str(); |
|
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729 nssym = search_linked_libs(dls->lib, symbol); |
|
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|
730 } |
|
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|
731 } else if (dls->module == MAGIC_DYLIB_MOD) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
732 /* Global context, use NSLookupAndBindSymbol */ |
|
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|
733 if (NSIsSymbolNameDefined(symbol)) { |
|
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|
734 /* There doesn't seem to be a return on error option for this call??? |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
735 this is potentially broken, if binding fails, it will improperly |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
736 exit the application. */ |
|
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737 nssym = NSLookupAndBindSymbol(symbol); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
738 } else { |
|
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|
739 if (savedErrorStr) |
|
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740 SDL_free(savedErrorStr); |
|
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|
741 savedErrorStr = SDL_malloc(256); |
|
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|
742 SDL_snprintf(savedErrorStr, 256, |
|
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|
743 "Symbol \"%s\" not in global context", symbol); |
|
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|
744 } |
|
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|
745 } |
|
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|
746 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
747 /* Error reporting */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
748 if (!nssym) { |
|
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|
749 if (!savedErrorStr || !SDL_strlen(savedErrorStr)) { |
|
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|
750 if (savedErrorStr) |
|
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|
751 SDL_free(savedErrorStr); |
|
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|
752 savedErrorStr = SDL_malloc(256); |
|
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|
753 SDL_snprintf(savedErrorStr, 256, "Symbol \"%s\" not found", |
|
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|
754 symbol); |
|
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|
755 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
756 if (canSetError) { |
|
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|
757 error(savedErrorStr); |
|
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|
758 } else { |
|
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|
759 debug(savedErrorStr); |
|
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|
760 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
761 if (savedErrorStr) |
|
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|
762 SDL_free(savedErrorStr); |
|
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|
763 return NULL; |
|
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|
764 } |
|
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|
765 return NSAddressOfSymbol(nssym); |
| 1659 | 766 } |
| 767 | |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
768 static struct dlstatus * |
|
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|
769 loadModule(const char *path, const struct stat *sbuf, int mode) |
| 1659 | 770 { |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
771 NSObjectFileImage ofi = 0; |
|
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772 NSObjectFileImageReturnCode ofirc; |
|
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|
773 struct dlstatus *dls; |
|
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|
774 NSLinkEditErrors ler; |
|
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|
775 int lerno; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
776 const char *errstr; |
|
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|
777 const char *file; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
778 void (*init) (void); |
| 1659 | 779 |
|
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780 ofirc = NSCreateObjectFileImageFromFile(path, &ofi); |
|
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|
781 switch (ofirc) { |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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782 case NSObjectFileImageSuccess: |
|
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|
783 break; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
784 case NSObjectFileImageInappropriateFile: |
|
782fd950bd46
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Sam Lantinga <slouken@libsdl.org>
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785 if (dyld_NSAddImage && dyld_NSIsSymbolNameDefinedInImage |
|
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|
786 && dyld_NSLookupSymbolInImage) { |
|
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787 if (isFlagSet(mode, RTLD_LOCAL)) { |
|
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|
788 warning("trying to open a .dylib with RTLD_LOCAL"); |
|
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789 error("unable to open this file with RTLD_LOCAL"); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
790 return NULL; |
|
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|
791 } |
|
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|
792 } else { |
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793 error("opening this file is unsupported on this system"); |
|
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794 return NULL; |
|
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|
795 } |
|
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Sam Lantinga <slouken@libsdl.org>
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|
796 break; |
|
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|
797 case NSObjectFileImageFailure: |
|
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798 error("object file setup failure"); |
|
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|
799 return NULL; |
|
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|
800 case NSObjectFileImageArch: |
|
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801 error("no object for this architecture"); |
|
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|
802 return NULL; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
803 case NSObjectFileImageFormat: |
|
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|
804 error("bad object file format"); |
|
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|
805 return NULL; |
|
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|
806 case NSObjectFileImageAccess: |
|
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|
807 error("can't read object file"); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
808 return NULL; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
809 default: |
|
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810 error("unknown error from NSCreateObjectFileImageFromFile()"); |
|
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|
811 return NULL; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
812 } |
|
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|
813 dls = lookupStatus(sbuf); |
|
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|
814 if (!dls) { |
|
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|
815 dls = allocStatus(); |
|
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|
816 } |
|
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|
817 if (!dls) { |
|
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|
818 error("unable to allocate memory"); |
|
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|
819 return NULL; |
|
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|
820 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
821 // dls->lib = 0; |
|
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|
822 if (ofirc == NSObjectFileImageInappropriateFile) { |
|
782fd950bd46
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|
823 if ((dls->lib = |
|
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824 dyld_NSAddImage(path, NSADDIMAGE_OPTION_RETURN_ON_ERROR))) { |
|
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825 debug("Dynamic lib loaded at %ld", dls->lib); |
|
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|
826 ofi = MAGIC_DYLIB_OFI; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
827 dls->module = MAGIC_DYLIB_MOD; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
828 ofirc = NSObjectFileImageSuccess; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
829 /* Although it is possible with a bit of work to modify this so it works and |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
830 functions with RTLD_NOW, I don't deem it necessary at the moment */ |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
831 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
832 if (!(dls->module)) { |
|
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833 NSLinkEditError(&ler, &lerno, &file, &errstr); |
|
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|
834 if (!errstr || (!SDL_strlen(errstr))) |
|
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|
835 error("Can't open this file type"); |
|
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|
836 else |
|
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|
837 error(errstr); |
|
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changeset
|
838 if ((dls->flags & DL_IN_LIST) == 0) { |
|
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|
839 SDL_free(dls); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
840 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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changeset
|
841 return NULL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
842 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
843 } else { |
|
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|
844 dls->module = NSLinkModule(ofi, path, |
|
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|
845 NSLINKMODULE_OPTION_RETURN_ON_ERROR | |
|
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|
846 NSLINKMODULE_OPTION_PRIVATE | |
|
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|
847 (isFlagSet(mode, RTLD_NOW) ? |
|
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|
848 NSLINKMODULE_OPTION_BINDNOW : 0)); |
|
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|
849 NSDestroyObjectFileImage(ofi); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
850 if (dls->module) { |
|
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|
851 dls->lib = get_mach_header_from_NSModule(dls->module); |
|
1662
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Sam Lantinga <slouken@libsdl.org>
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|
852 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
853 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
854 if (!dls->module) { |
|
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|
855 NSLinkEditError(&ler, &lerno, &file, &errstr); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
856 if ((dls->flags & DL_IN_LIST) == 0) { |
|
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|
857 SDL_free(dls); |
|
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|
858 } |
|
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|
859 error(errstr); |
|
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|
860 return NULL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
861 } |
| 1659 | 862 |
|
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|
863 insertStatus(dls, sbuf); |
|
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864 dls = reference(dls, mode); |
|
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|
865 if ((init = dlsymIntern(dls, "__init", 0))) { |
|
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|
866 debug("calling _init()"); |
|
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|
867 init(); |
|
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|
868 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
869 return dls; |
| 1659 | 870 } |
| 871 | |
|
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|
872 inline static void |
|
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|
873 dlcompat_init_check(void) |
| 1659 | 874 { |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
875 static pthread_mutex_t l = PTHREAD_MUTEX_INITIALIZER; |
|
782fd950bd46
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|
876 static int init_done = 0; |
| 1659 | 877 |
|
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|
878 pthread_mutex_lock(&l); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents:
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changeset
|
879 if (!init_done) { |
|
1668
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more tweaking indent options
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diff
changeset
|
880 dlcompat_init_func(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
881 init_done = 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
882 } |
|
1668
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diff
changeset
|
883 pthread_mutex_unlock(&l); |
| 1659 | 884 } |
| 885 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
886 static void |
|
1668
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changeset
|
887 dlcompat_init_func(void) |
| 1659 | 888 { |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
889 _dyld_func_lookup("__dyld_NSAddImage", (void **) &dyld_NSAddImage); |
|
4da1ee79c9af
more tweaking indent options
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diff
changeset
|
890 _dyld_func_lookup("__dyld_NSIsSymbolNameDefinedInImage", |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
891 (void **) &dyld_NSIsSymbolNameDefinedInImage); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
892 _dyld_func_lookup("__dyld_NSLookupSymbolInImage", |
|
4da1ee79c9af
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parents:
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diff
changeset
|
893 (void **) &dyld_NSLookupSymbolInImage); |
|
4da1ee79c9af
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parents:
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diff
changeset
|
894 if (pthread_mutex_init(&dlcompat_mutex, NULL)) |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
895 exit(1); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
896 if (pthread_key_create(&dlerror_key, &dlerrorfree)) |
|
4da1ee79c9af
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diff
changeset
|
897 exit(1); |
| 1659 | 898 } |
| 899 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
900 static void |
|
1668
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diff
changeset
|
901 resetdlerror() |
| 1659 | 902 { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
903 struct dlthread *tss; |
|
1668
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diff
changeset
|
904 tss = pthread_getspecific(dlerror_key); |
|
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782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
905 tss->errset = 0; |
| 1659 | 906 } |
| 907 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
908 static void |
|
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Sam Lantinga <slouken@libsdl.org>
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changeset
|
909 dlerrorfree(void *data) |
| 1659 | 910 { |
|
1668
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diff
changeset
|
911 SDL_free(data); |
| 1659 | 912 } |
| 913 | |
| 914 /* We kind of want a recursive lock here, but meet a little trouble | |
| 915 * because they are not available pre OS X 10.2, so we fake it | |
| 916 * using thread specific storage to keep a lock count | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
917 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
918 static inline void |
|
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diff
changeset
|
919 dolock(void) |
| 1659 | 920 { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
921 int err = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
922 struct dlthread *tss; |
|
1668
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changeset
|
923 dlcompat_init_check(); |
|
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|
924 tss = pthread_getspecific(dlerror_key); |
|
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782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
925 if (!tss) { |
|
1668
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changeset
|
926 tss = SDL_malloc(sizeof(struct dlthread)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
927 tss->lockcnt = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
928 tss->errset = 0; |
|
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|
929 if (pthread_setspecific(dlerror_key, tss)) { |
|
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|
930 fprintf(stderr, "dlcompat: pthread_setspecific failed\n"); |
|
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1662
diff
changeset
|
931 exit(1); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
932 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
933 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
934 if (!tss->lockcnt) |
|
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changeset
|
935 err = pthread_mutex_lock(&dlcompat_mutex); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
936 tss->lockcnt = tss->lockcnt + 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
937 if (err) |
|
1668
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changeset
|
938 exit(err); |
| 1659 | 939 } |
| 940 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
941 static inline void |
|
1668
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diff
changeset
|
942 dounlock(void) |
| 1659 | 943 { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
944 int err = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
945 struct dlthread *tss; |
|
1668
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changeset
|
946 tss = pthread_getspecific(dlerror_key); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
947 tss->lockcnt = tss->lockcnt - 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
948 if (!tss->lockcnt) |
|
1668
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1662
diff
changeset
|
949 err = pthread_mutex_unlock(&dlcompat_mutex); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
950 if (err) |
|
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changeset
|
951 exit(err); |
| 1659 | 952 } |
| 953 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
954 static void * |
|
1668
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1662
diff
changeset
|
955 SDL_OSX_dlopen(const char *path, int mode) |
| 1659 | 956 { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
957 const struct stat *sbuf; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
958 struct dlstatus *dls; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
959 const char *fullPath; |
| 1659 | 960 |
|
1668
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parents:
1662
diff
changeset
|
961 dolock(); |
|
4da1ee79c9af
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1662
diff
changeset
|
962 resetdlerror(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
963 if (!path) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
964 dls = &mainStatus; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
965 goto dlopenok; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
966 } |
|
1668
4da1ee79c9af
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changeset
|
967 if (!(sbuf = findFile(path, &fullPath))) { |
|
4da1ee79c9af
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parents:
1662
diff
changeset
|
968 error("file \"%s\" not found", path); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
969 goto dlopenerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
970 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
971 /* Now checks that it hasn't been closed already */ |
|
1668
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diff
changeset
|
972 if ((dls = lookupStatus(sbuf)) && (dls->refs > 0)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
973 /* debug("status found"); */ |
|
1668
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diff
changeset
|
974 dls = reference(dls, mode); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
975 goto dlopenok; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
976 } |
| 1659 | 977 #ifdef RTLD_NOLOAD |
|
1668
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1662
diff
changeset
|
978 if (isFlagSet(mode, RTLD_NOLOAD)) { |
|
4da1ee79c9af
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parents:
1662
diff
changeset
|
979 error("no existing handle and RTLD_NOLOAD specified"); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
980 goto dlopenerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
981 } |
| 1659 | 982 #endif |
|
1668
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1662
diff
changeset
|
983 if (isFlagSet(mode, RTLD_LAZY) && isFlagSet(mode, RTLD_NOW)) { |
|
4da1ee79c9af
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1662
diff
changeset
|
984 error("how can I load something both RTLD_LAZY and RTLD_NOW?"); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
985 goto dlopenerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
986 } |
|
1668
4da1ee79c9af
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1662
diff
changeset
|
987 dls = loadModule(fullPath, sbuf, mode); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
988 |
| 1659 | 989 dlopenok: |
|
1668
4da1ee79c9af
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diff
changeset
|
990 dounlock(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
991 return (void *) dls; |
| 1659 | 992 dlopenerror: |
|
1668
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1662
diff
changeset
|
993 dounlock(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
994 return NULL; |
| 1659 | 995 } |
| 996 | |
| 997 #if !FINK_BUILD | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
998 static void * |
|
1668
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
999 SDL_OSX_dlsym(void *dl_restrict handle, const char *dl_restrict symbol) |
| 1659 | 1000 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1001 int sym_len = SDL_strlen(symbol); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1002 void *value = NULL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1003 char *malloc_sym = NULL; |
|
1668
4da1ee79c9af
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parents:
1662
diff
changeset
|
1004 dolock(); |
|
4da1ee79c9af
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parents:
1662
diff
changeset
|
1005 malloc_sym = SDL_malloc(sym_len + 2); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1006 if (malloc_sym) { |
|
1668
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1662
diff
changeset
|
1007 SDL_snprintf(malloc_sym, sym_len + 2, "_%s", symbol); |
|
4da1ee79c9af
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parents:
1662
diff
changeset
|
1008 value = dlsymIntern(handle, malloc_sym, 1); |
|
4da1ee79c9af
more tweaking indent options
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parents:
1662
diff
changeset
|
1009 SDL_free(malloc_sym); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1010 } else { |
|
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|
1011 error("Unable to allocate memory"); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1012 goto dlsymerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1013 } |
|
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|
1014 dounlock(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1015 return value; |
| 1659 | 1016 dlsymerror: |
|
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|
1017 dounlock(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1018 return NULL; |
| 1659 | 1019 } |
| 1020 #endif | |
| 1021 | |
| 1022 #if FINK_BUILD | |
| 1023 | |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1024 static void * |
|
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|
1025 dlsym_prepend_underscore(void *handle, const char *symbol) |
| 1659 | 1026 { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1027 void *answer; |
|
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|
1028 dolock(); |
|
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|
1029 answer = dlsym_prepend_underscore_intern(handle, symbol); |
|
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changeset
|
1030 dounlock(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1031 return answer; |
| 1659 | 1032 } |
| 1033 | |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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changeset
|
1034 static void * |
|
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|
1035 dlsym_prepend_underscore_intern(void *handle, const char *symbol) |
| 1659 | 1036 { |
| 1037 /* | |
| 1038 * A quick and easy way for porting packages which call dlsym(handle,"sym") | |
| 1039 * If the porter adds -Ddlsym=dlsym_prepend_underscore to the CFLAGS then | |
| 1040 * this function will be called, and will add the required underscore. | |
| 1041 * | |
| 1042 * Note that I haven't figured out yet which should be "standard", prepend | |
| 1043 * the underscore always, or not at all. These global functions need to go away | |
| 1044 * for opendarwin. | |
| 1045 */ | |
|
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|
1046 int sym_len = SDL_strlen(symbol); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1047 void *value = NULL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1048 char *malloc_sym = NULL; |
|
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|
1049 malloc_sym = SDL_malloc(sym_len + 2); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1050 if (malloc_sym) { |
|
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|
1051 SDL_snprintf(malloc_sym, sym_len + 2, "_%s", symbol); |
|
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|
1052 value = dlsymIntern(handle, malloc_sym, 1); |
|
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|
1053 SDL_free(malloc_sym); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1054 } else { |
|
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|
1055 error("Unable to allocate memory"); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1056 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1057 return value; |
| 1659 | 1058 } |
| 1059 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1060 static void * |
|
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|
1061 dlsym_auto_underscore(void *handle, const char *symbol) |
| 1659 | 1062 { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1063 void *answer; |
|
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|
1064 dolock(); |
|
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1065 answer = dlsym_auto_underscore_intern(handle, symbol); |
|
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|
1066 dounlock(); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1067 return answer; |
| 1659 | 1068 |
| 1069 } | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1070 static void * |
|
1668
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|
1071 dlsym_auto_underscore_intern(void *handle, const char *symbol) |
| 1659 | 1072 { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1073 struct dlstatus *dls = handle; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1074 void *addr = 0; |
|
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|
1075 addr = dlsymIntern(dls, symbol, 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1076 if (!addr) |
|
1668
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|
1077 addr = dlsym_prepend_underscore_intern(handle, symbol); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1078 return addr; |
| 1659 | 1079 } |
| 1080 | |
| 1081 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1082 static void * |
|
1668
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changeset
|
1083 SDL_OSX_dlsym(void *dl_restrict handle, const char *dl_restrict symbol) |
| 1659 | 1084 { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1085 struct dlstatus *dls = handle; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1086 void *addr = 0; |
|
1668
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changeset
|
1087 dolock(); |
|
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changeset
|
1088 addr = dlsymIntern(dls, symbol, 1); |
|
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|
1089 dounlock(); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1090 return addr; |
| 1659 | 1091 } |
| 1092 #endif | |
| 1093 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1094 static int |
|
1668
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changeset
|
1095 SDL_OSX_dlclose(void *handle) |
| 1659 | 1096 { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1097 struct dlstatus *dls = handle; |
|
1668
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|
1098 dolock(); |
|
4da1ee79c9af
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changeset
|
1099 resetdlerror(); |
|
4da1ee79c9af
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changeset
|
1100 if (!isValidStatus(dls)) { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1101 goto dlcloseerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1102 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1103 if (dls->module == MAGIC_DYLIB_MOD) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1104 const char *name; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1105 if (!dls->lib) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1106 name = "global context"; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1107 } else { |
|
1668
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|
1108 name = get_lib_name(dls->lib); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1109 } |
|
1668
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|
1110 warning("trying to close a .dylib!"); |
|
4da1ee79c9af
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changeset
|
1111 error("Not closing \"%s\" - dynamic libraries cannot be closed", |
|
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diff
changeset
|
1112 name); |
|
1662
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Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1113 goto dlcloseerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1114 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1115 if (!dls->module) { |
|
1668
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|
1116 error("module already closed"); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1117 goto dlcloseerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1118 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1119 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1120 if (dls->refs == 1) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1121 unsigned long options = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1122 void (*fini) (void); |
|
1668
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|
1123 if ((fini = dlsymIntern(dls, "__fini", 0))) { |
|
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|
1124 debug("calling _fini()"); |
|
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|
1125 fini(); |
|
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Sam Lantinga <slouken@libsdl.org>
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changeset
|
1126 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1127 options |= NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES; |
| 1659 | 1128 #ifdef RTLD_NODELETE |
|
1668
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|
1129 if (isFlagSet(dls->mode, RTLD_NODELETE)) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1130 options |= NSUNLINKMODULE_OPTION_KEEP_MEMORY_MAPPED; |
| 1659 | 1131 #endif |
|
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|
1132 if (!NSUnLinkModule(dls->module, options)) { |
|
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|
1133 error("unable to unlink module"); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1134 goto dlcloseerror; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1135 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1136 dls->refs--; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1137 dls->module = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1138 /* Note: the dlstatus struct dls is neither removed from the list |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1139 * nor is the memory it occupies freed. This shouldn't pose a |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1140 * problem in mostly all cases, though. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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1659
diff
changeset
|
1141 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1142 } |
|
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|
1143 dounlock(); |
|
1662
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Sam Lantinga <slouken@libsdl.org>
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|
1144 return 0; |
| 1659 | 1145 dlcloseerror: |
|
1668
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|
1146 dounlock(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1147 return 1; |
| 1659 | 1148 } |
| 1149 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1150 static const char * |
|
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|
1151 SDL_OSX_dlerror(void) |
| 1659 | 1152 { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1153 struct dlthread *tss; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1154 const char *err_str = NULL; |
|
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|
1155 dlcompat_init_check(); |
|
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|
1156 tss = pthread_getspecific(dlerror_key); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1157 if (tss != NULL && tss->errset != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1158 tss->errset = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
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|
1159 err_str = tss->errstr; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1160 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1161 return (err_str); |
| 1659 | 1162 } |
| 1163 | |
| 1164 /* Given an address, return the mach_header for the image containing it | |
| 1165 * or zero if the given address is not contained in any loaded images. | |
| 1166 */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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1659
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|
1167 static const struct mach_header * |
|
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|
1168 image_for_address(const void *address) |
| 1659 | 1169 { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1170 unsigned long i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
1171 unsigned long j; |
|
1668
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|
1172 unsigned long count = _dyld_image_count(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1173 const struct mach_header *mh = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1174 struct load_command *lc = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
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|
1175 unsigned long addr = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1176 for (i = 0; i < count; i++) { |
|
1668
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|
1177 addr = (unsigned long) address - _dyld_get_image_vmaddr_slide(i); |
|
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|
1178 mh = _dyld_get_image_header(i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1179 if (mh) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1180 lc = (struct load_command *) ((char *) mh + |
|
1668
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|
1181 sizeof(struct mach_header)); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1182 for (j = 0; j < mh->ncmds; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1183 j++, lc = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1184 (struct load_command *) ((char *) lc + lc->cmdsize)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1185 if (LC_SEGMENT == lc->cmd && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1186 addr >= ((struct segment_command *) lc)->vmaddr && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1187 addr < |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1188 ((struct segment_command *) lc)->vmaddr + |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1189 ((struct segment_command *) lc)->vmsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1190 goto image_found; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
1191 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
1192 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
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|
1193 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1194 mh = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
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|
1195 } |
| 1659 | 1196 image_found: |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
1197 return mh; |
| 1659 | 1198 } |
| 1199 | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1200 #if 0 /* unused */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1201 static int |
|
1668
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|
1202 SDL_OSX_dladdr(const void *dl_restrict p, SDL_OSX_Dl_info * dl_restrict info) |
| 1659 | 1203 { |
| 1204 /* | |
| 1205 FIXME: USe the routine image_for_address. | |
| 1206 */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1207 unsigned long i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1208 unsigned long j; |
|
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|
1209 unsigned long count = _dyld_image_count(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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1659
diff
changeset
|
1210 struct mach_header *mh = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1211 struct load_command *lc = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1212 unsigned long addr = NULL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1213 unsigned long table_off = (unsigned long) 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1214 int found = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1215 if (!info) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1216 return 0; |
|
1668
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|
1217 dolock(); |
|
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changeset
|
1218 resetdlerror(); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1219 info->dli_fname = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1220 info->dli_fbase = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1221 info->dli_sname = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1222 info->dli_saddr = 0; |
| 1659 | 1223 /* Some of this was swiped from code posted by Douglas Davidson <ddavidso AT apple DOT com> |
| 1224 * to darwin-development AT lists DOT apple DOT com and slightly modified | |
| 1225 */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1226 for (i = 0; i < count; i++) { |
|
1668
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|
1227 addr = (unsigned long) p - _dyld_get_image_vmaddr_slide(i); |
|
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|
1228 mh = _dyld_get_image_header(i); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1229 if (mh) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
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changeset
|
1230 lc = (struct load_command *) ((char *) mh + |
|
1668
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|
1231 sizeof(struct mach_header)); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1232 for (j = 0; j < mh->ncmds; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1233 j++, lc = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1234 (struct load_command *) ((char *) lc + lc->cmdsize)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1235 if (LC_SEGMENT == lc->cmd && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1236 addr >= ((struct segment_command *) lc)->vmaddr && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1237 addr < |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1238 ((struct segment_command *) lc)->vmaddr + |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1239 ((struct segment_command *) lc)->vmsize) { |
|
1668
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|
1240 info->dli_fname = _dyld_get_image_name(i); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1241 info->dli_fbase = (void *) mh; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1242 found = 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1243 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1244 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
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|
1245 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1246 if (found) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1247 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
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changeset
|
1248 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1249 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1250 if (!found) { |
|
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|
1251 dounlock(); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
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changeset
|
1252 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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changeset
|
1253 } |
|
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|
1254 lc = (struct load_command *) ((char *) mh + sizeof(struct mach_header)); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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1659
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changeset
|
1255 for (j = 0; j < mh->ncmds; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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1659
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changeset
|
1256 j++, lc = (struct load_command *) ((char *) lc + lc->cmdsize)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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1659
diff
changeset
|
1257 if (LC_SEGMENT == lc->cmd) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1258 if (!SDL_strcmp |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1259 (((struct segment_command *) lc)->segname, "__LINKEDIT")) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1260 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1261 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1262 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1263 table_off = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1264 ((unsigned long) ((struct segment_command *) lc)->vmaddr) - |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
|
1265 ((unsigned long) ((struct segment_command *) lc)->fileoff) + |
|
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|
1266 _dyld_get_image_vmaddr_slide(i); |
|
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|
1267 debug("table off %x", table_off); |
| 1659 | 1268 |
|
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|
1269 lc = (struct load_command *) ((char *) mh + sizeof(struct mach_header)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1270 for (j = 0; j < mh->ncmds; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1271 j++, lc = (struct load_command *) ((char *) lc + lc->cmdsize)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1272 if (LC_SYMTAB == lc->cmd) { |
| 1659 | 1273 |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1274 struct nlist *symtable = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1275 (struct nlist *) (((struct symtab_command *) lc)->symoff + |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1276 table_off); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1277 unsigned long numsyms = ((struct symtab_command *) lc)->nsyms; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1278 struct nlist *nearest = NULL; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1279 unsigned long diff = 0xffffffff; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1280 unsigned long strtable = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1281 (unsigned long) (((struct symtab_command *) lc)->stroff + |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1282 table_off); |
|
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1283 debug("symtable %x", symtable); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1284 for (i = 0; i < numsyms; i++) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1285 /* Ignore the following kinds of Symbols */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1286 if ((!symtable->n_value) /* Undefined */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1287 ||(symtable->n_type >= N_PEXT) /* Debug symbol */ |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1288 ||(!(symtable->n_type & N_EXT)) /* Local Symbol */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1289 ) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1290 symtable++; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1291 continue; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1292 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1293 if ((addr >= symtable->n_value) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1294 && (diff >= (symtable->n_value - addr))) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1295 diff = (unsigned long) symtable->n_value - addr; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1296 nearest = symtable; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1297 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1298 symtable++; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1299 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1300 if (nearest) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1301 info->dli_saddr = nearest->n_value + ((void *) p - addr); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
1302 info->dli_sname = (char *) (strtable + nearest->n_un.n_strx); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1303 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1304 } |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1305 } |
|
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|
1306 dounlock(); |
|
1662
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Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1307 return 1; |
| 1659 | 1308 } |
| 1309 #endif | |
| 1310 | |
| 1311 /* | |
| 1312 * Implement the dlfunc() interface, which behaves exactly the same as | |
| 1313 * dlsym() except that it returns a function pointer instead of a data | |
| 1314 * pointer. This can be used by applications to avoid compiler warnings | |
| 1315 * about undefined behavior, and is intended as prior art for future | |
| 1316 * POSIX standardization. This function requires that all pointer types | |
| 1317 * have the same representation, which is true on all platforms FreeBSD | |
| 1318 * runs on, but is not guaranteed by the C standard. | |
| 1319 */ | |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1320 #if 0 |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1321 static dlfunc_t |
|
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1322 SDL_OSX_dlfunc(void *dl_restrict handle, const char *dl_restrict symbol) |
| 1659 | 1323 { |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1324 union |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1325 { |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1326 void *d; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1327 dlfunc_t f; |
|
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|
1328 } rv; |
|
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1329 int sym_len = SDL_strlen(symbol); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1330 char *malloc_sym = NULL; |
|
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|
1331 dolock(); |
|
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|
1332 malloc_sym = SDL_malloc(sym_len + 2); |
|
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|
1333 if (malloc_sym) { |
|
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|
1334 SDL_snprintf(malloc_sym, sym_len + 2, "_%s", symbol); |
|
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1335 rv.d = dlsymIntern(handle, malloc_sym, 1); |
|
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|
1336 SDL_free(malloc_sym); |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1337 } else { |
|
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1338 error("Unable to allocate memory"); |
|
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|
1339 goto dlfuncerror; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1340 } |
|
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|
1341 dounlock(); |
|
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|
1342 return rv.f; |
| 1659 | 1343 dlfuncerror: |
|
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|
1344 dounlock(); |
|
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|
1345 return NULL; |
| 1659 | 1346 } |
| 1347 #endif | |
| 1348 | |
| 1349 | |
| 1350 | |
| 1351 /* dlcompat ends, here's the SDL interface... --ryan. */ | |
| 1352 | |
| 1353 | |
| 1354 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 1355 /* System dependent library loading routines */ | |
| 1356 | |
| 1357 #include "SDL_loadso.h" | |
| 1358 | |
|
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|
1359 void * |
|
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1360 SDL_LoadObject(const char *sofile) |
| 1659 | 1361 { |
|
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1362 void *handle = SDL_OSX_dlopen(sofile, RTLD_NOW); |
|
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1363 const char *loaderror = SDL_OSX_dlerror(); |
|
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|
1364 if (handle == NULL) { |
|
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1365 SDL_SetError("Failed loading %s: %s", sofile, loaderror); |
|
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|
1366 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1367 return (handle); |
| 1659 | 1368 } |
| 1369 | |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1370 void * |
|
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1371 SDL_LoadFunction(void *handle, const char *name) |
| 1659 | 1372 { |
|
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1373 void *symbol = SDL_OSX_dlsym(handle, name); |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1374 if (symbol == NULL) { |
|
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1375 SDL_SetError("Failed loading %s: %s", name, SDL_OSX_dlerror()); |
|
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|
1376 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1377 return (symbol); |
| 1659 | 1378 } |
| 1379 | |
|
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|
1380 void |
|
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|
1381 SDL_UnloadObject(void *handle) |
| 1659 | 1382 { |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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|
1383 if (handle != NULL) { |
|
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1384 SDL_OSX_dlclose(handle); |
|
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|
1385 } |
| 1659 | 1386 } |
| 1387 | |
| 1388 #endif /* SDL_LOADSO_DLCOMPAT */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1659
diff
changeset
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1389 /* vi: set ts=4 sw=4 expandtab: */ |