1 /* Support macros for making weak and strong aliases for symbols, 2 and for using symbol sets and linker warnings with GNU ld. 3 Copyright (C) 1995-1998,2000-2003,2004,2005,2006 4 Free Software Foundation, Inc. 5 This file is part of the GNU C Library. 6 7 The GNU C Library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Lesser General Public 9 License as published by the Free Software Foundation; either 10 version 2.1 of the License, or (at your option) any later version. 11 12 The GNU C Library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Lesser General Public License for more details. 16 17 You should have received a copy of the GNU Lesser General Public 18 License along with the GNU C Library; if not, see 19 <http://www.gnu.org/licenses/>. */ 20 21 #ifndef _LIBC_SYMBOLS_H 22 #define _LIBC_SYMBOLS_H 1 23 24 /* This is defined for the compilation of all C library code. features.h 25 tests this to avoid inclusion of stubs.h while compiling the library, 26 before stubs.h has been generated. Some library code that is shared 27 with other packages also tests this symbol to see if it is being 28 compiled as part of the C library. We must define this before including 29 config.h, because it makes some definitions conditional on whether libc 30 itself is being compiled, or just some generator program. */ 31 #define _LIBC 1 32 33 34 /* This file's macros are included implicitly in the compilation of every 35 file in the C library by -imacros. 36 37 We include uClibc_arch_features.h which is defined by arch devs. 38 It should define for us the following symbols: 39 40 * HAVE_ASM_SET_DIRECTIVE if we have `.set B, A' instead of `A = B'. 41 * ASM_TYPE_DIRECTIVE_PREFIX with `@' or `#' or whatever for .type, 42 or leave it undefined if there is no .type directive. 43 * HAVE_ELF if using ELF, which supports weak symbols using `.weak'. 44 * HAVE_ASM_WEAK_DIRECTIVE if we have weak symbols using `.weak'. 45 * HAVE_ASM_WEAKEXT_DIRECTIVE if we have weak symbols using `.weakext'. 46 47 */ 48 49 #include <bits/uClibc_arch_features.h> 50 51 /* Enable declarations of GNU extensions, since we are compiling them. */ 52 #define _GNU_SOURCE 1 53 54 /* Prepare for the case that `__builtin_expect' is not available. */ 55 #if defined __GNUC__ && __GNUC__ == 2 && __GNUC_MINOR__ < 96 56 # define __builtin_expect(x, expected_value) (x) 57 #endif 58 #ifndef likely 59 # define likely(x) __builtin_expect((!!(x)),1) 60 #endif 61 #ifndef unlikely 62 # define unlikely(x) __builtin_expect((!!(x)),0) 63 #endif 64 #if defined __GNUC__ && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) 65 # ifndef __cold 66 # define __cold __attribute__ ((__cold__)) 67 # endif 68 # ifndef __hot 69 # define __hot __attribute__ ((__hot__)) 70 # endif 71 #else 72 # ifndef __cold 73 # define __cold 74 # endif 75 # ifndef __hot 76 # define __hot 77 # endif 78 #endif 79 #ifndef __LINUX_COMPILER_H 80 # define __LINUX_COMPILER_H 81 #endif 82 #ifndef __cast__ 83 # define __cast__(_to) 84 #endif 85 86 #if defined __GNUC__ && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) 87 # define attribute_optimize(x) __attribute__ ((optimize(x))) 88 #else 89 # define attribute_optimize(x) 90 #endif 91 92 #define attribute_unused __attribute__ ((unused)) 93 94 #if defined __GNUC__ || defined __ICC 95 # define attribute_noreturn __attribute__ ((__noreturn__)) 96 #else 97 # define attribute_noreturn 98 #endif 99 100 #define libc_freeres_ptr(decl) \ 101 __make_section_unallocated ("__libc_freeres_ptrs, \"aw\", %nobits") \ 102 decl __attribute__ ((section ("__libc_freeres_ptrs" __sec_comment))) 103 #define __libc_freeres_fn_section \ 104 __attribute__ ((section ("__libc_freeres_fn"))) 105 106 #ifndef NOT_IN_libc 107 # define IS_IN_libc 1 108 #endif 109 110 /* Indirect stringification. Doing two levels allows 111 * the parameter to be a macro itself. 112 */ 113 #define __stringify_1(x...) #x 114 #define __stringify(x) __stringify_1(x) 115 116 #ifdef __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ 117 # define HAVE_ASM_SET_DIRECTIVE 118 #else 119 # undef HAVE_ASM_SET_DIRECTIVE 120 #endif 121 122 #ifdef __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__ 123 # define HAVE_ASM_WEAK_DIRECTIVE 124 #else 125 # undef HAVE_ASM_WEAK_DIRECTIVE 126 #endif 127 128 #ifdef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__ 129 # define HAVE_ASM_WEAKEXT_DIRECTIVE 130 #else 131 # undef HAVE_ASM_WEAKEXT_DIRECTIVE 132 #endif 133 134 #ifdef __UCLIBC_HAVE_ASM_CFI_DIRECTIVES__ 135 # define HAVE_ASM_CFI_DIRECTIVES 136 #else 137 # undef HAVE_ASM_CFI_DIRECTIVES 138 #endif 139 140 #if defined HAVE_ASM_WEAK_DIRECTIVE || defined HAVE_ASM_WEAKEXT_DIRECTIVE 141 # define HAVE_WEAK_SYMBOLS 142 #endif 143 144 #undef C_SYMBOL_NAME 145 #ifndef C_SYMBOL_NAME 146 # ifndef __UCLIBC_UNDERSCORES__ 147 # define C_SYMBOL_NAME(name) name 148 # else 149 # define C_SYMBOL_NAME(name) _##name 150 # endif 151 #endif 152 153 #ifdef __UCLIBC_ASM_LINE_SEP__ 154 # define ASM_LINE_SEP __UCLIBC_ASM_LINE_SEP__ 155 #else 156 # define ASM_LINE_SEP ; 157 #endif 158 159 #ifndef __attribute_copy__ 160 /* Provide an empty definition when cdefs.h is not included. */ 161 # define __attribute_copy__(arg) 162 #endif 163 164 #ifndef __ASSEMBLER__ 165 /* GCC understands weak symbols and aliases; use its interface where 166 possible, instead of embedded assembly language. */ 167 168 /* Define ALIASNAME as a strong alias for NAME. */ 169 # define strong_alias(name, aliasname) _strong_alias(name, aliasname) 170 # define _strong_alias(name, aliasname) \ 171 extern __typeof (name) aliasname __attribute__ ((alias (#name))) __attribute_copy__ (name); 172 /* Same, but does not check for type match. Use sparingly. 173 Example: strong_alias(stat,stat64) may fail, this one works: */ 174 # define strong_alias_untyped(name, aliasname) \ 175 _strong_alias_untyped(name, aliasname) 176 # define _strong_alias_untyped(name, aliasname) \ 177 extern __typeof (aliasname) aliasname __attribute__ ((alias (#name))) __attribute_copy__ (name); 178 179 # ifdef HAVE_WEAK_SYMBOLS 180 181 /* This comes between the return type and function name in 182 a function definition to make that definition weak. */ 183 # define weak_function __attribute__ ((weak)) 184 # define weak_const_function __attribute__ ((weak, __const__)) 185 186 /* Define ALIASNAME as a weak alias for NAME. 187 If weak aliases are not available, this defines a strong alias. */ 188 # define weak_alias(name, aliasname) _weak_alias (name, aliasname) 189 # define _weak_alias(name, aliasname) \ 190 extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))) __attribute_copy__ (name); 191 192 /* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined). */ 193 # define weak_extern(symbol) _weak_extern (weak symbol) 194 # define _weak_extern(expr) _Pragma (#expr) 195 196 # else 197 198 # define weak_function /* empty */ 199 # define weak_const_function __attribute__ ((__const__)) 200 201 # define weak_alias(name, aliasname) strong_alias(name, aliasname) 202 # define weak_extern(symbol) /* Nothing. */ 203 204 # endif 205 206 #else /* __ASSEMBLER__ */ 207 208 # ifdef HAVE_ASM_SET_DIRECTIVE 209 # define strong_alias(original, alias) \ 210 .globl C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 211 .set C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original) 212 # define strong_data_alias(original, alias) strong_alias(original, alias) 213 # else 214 # define strong_alias(original, alias) \ 215 .globl C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 216 C_SYMBOL_NAME(alias) = C_SYMBOL_NAME(original) 217 # define strong_data_alias(original, alias) strong_alias(original, alias) 218 # endif 219 220 # ifdef HAVE_WEAK_SYMBOLS 221 # ifdef HAVE_ASM_WEAKEXT_DIRECTIVE 222 # define weak_alias(original, alias) \ 223 .weakext C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original) 224 # define weak_extern(symbol) \ 225 .weakext C_SYMBOL_NAME(symbol) 226 227 # else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ 228 229 # ifdef HAVE_ASM_SET_DIRECTIVE 230 # define weak_alias(original, alias) \ 231 .weak C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 232 .set C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original) 233 # else /* ! HAVE_ASM_SET_DIRECTIVE */ 234 # define weak_alias(original, alias) \ 235 .weak C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 236 C_SYMBOL_NAME(alias) = C_SYMBOL_NAME(original) 237 # endif 238 # define weak_extern(symbol) \ 239 .weak C_SYMBOL_NAME(symbol) 240 241 # endif /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ 242 243 # else /* ! HAVE_WEAK_SYMBOLS */ 244 245 # define weak_alias(original, alias) strong_alias(original, alias) 246 # define weak_extern(symbol) /* Nothing */ 247 # endif /* ! HAVE_WEAK_SYMBOLS */ 248 249 #endif /* __ASSEMBLER__ */ 250 251 252 /* On some platforms we can make internal function calls (i.e., calls of 253 functions not exported) a bit faster by using a different calling 254 convention. */ 255 #ifndef internal_function 256 # define internal_function /* empty */ 257 #endif 258 259 260 /* We want the .gnu.warning.SYMBOL section to be unallocated. */ 261 #define __make_section_unallocated(section_string) \ 262 __asm__ (".section " section_string "\n\t.previous"); 263 264 265 /* Tacking on "\n#APP\n\t#" to the section name makes gcc put it's bogus 266 section attributes on what looks like a comment to the assembler. */ 267 #ifdef __sparc__ /* HAVE_SECTION_QUOTES */ 268 # define __sec_comment "\"\n#APP\n\t#\"" 269 #else 270 # define __sec_comment "\n#APP\n\t#" 271 #endif 272 273 274 /* When a reference to SYMBOL is encountered, the linker will emit a 275 warning message MSG. */ 276 #define link_warning(symbol, msg) \ 277 __make_section_unallocated (".gnu.warning." #symbol) \ 278 static const char __evoke_link_warning_##symbol[] \ 279 __attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \ 280 = msg; 281 282 /* Handling on non-exported internal names. We have to do this only 283 for shared code. */ 284 #ifdef SHARED 285 # define INTUSE(name) name##_internal 286 # define INTDEF(name) strong_alias (name, name##_internal) 287 # define INTVARDEF(name) _INTVARDEF (name, name##_internal) 288 # if defined HAVE_VISIBILITY_ATTRIBUTE 289 # define _INTVARDEF(name, aliasname) \ 290 extern __typeof (name) aliasname __attribute__ ((alias (#name), \ 291 visibility ("hidden"))); 292 # else 293 # define _INTVARDEF(name, aliasname) \ 294 extern __typeof (name) aliasname __attribute__ ((alias (#name))); 295 # endif 296 # define INTDEF2(name, newname) strong_alias (name, newname##_internal) 297 # define INTVARDEF2(name, newname) _INTVARDEF (name, newname##_internal) 298 #else 299 # define INTUSE(name) name 300 # define INTDEF(name) 301 # define INTVARDEF(name) 302 # define INTDEF2(name, newname) 303 # define INTVARDEF2(name, newname) 304 #endif 305 306 307 /* The following macros are used for PLT bypassing within libc.so 308 (and if needed other libraries similarly). 309 310 If calls to foo within libc.so should always go to foo defined in libc.so, 311 then in include/foo.h you add: 312 313 int foo(int __bar); 314 libc_hidden_proto(foo) 315 316 line and after the foo function definition: 317 318 int foo(int __bar) { 319 return __bar; 320 } 321 libc_hidden_def(foo) 322 323 or 324 325 int foo(int __bar) { 326 return __bar; 327 } 328 libc_hidden_weak(foo) 329 330 Similarly for global data: if references to foo within libc.so 331 should always go to foo defined in libc.so, then in include/foo.h: 332 333 extern int foo; 334 libc_hidden_proto(foo) 335 336 and after foo's definition: 337 338 int foo = INITIAL_FOO_VALUE; 339 libc_hidden_data_def(foo) 340 341 or 342 343 int foo = INITIAL_FOO_VALUE; 344 libc_hidden_data_weak(foo) 345 346 If foo is normally just an alias (strong or weak) to some other function, 347 you should use the normal strong_alias first, then add libc_hidden_def 348 or libc_hidden_weak: 349 350 int baz(int __bar) { 351 return __bar; 352 } 353 strong_alias(baz, foo) 354 libc_hidden_weak(foo) 355 356 If the function should be internal to multiple objects, say ld.so and 357 libc.so, the best way is to use: 358 359 #if !defined NOT_IN_libc || defined IS_IN_rtld 360 hidden_proto(foo) 361 #endif 362 363 in include/foo.h and the normal macros at all function definitions 364 depending on what DSO they belong to. 365 366 If versioned_symbol macro is used to define foo, 367 libc_hidden_ver macro should be used, as in: 368 369 int __real_foo(int __bar) { 370 return __bar; 371 } 372 versioned_symbol(libc, __real_foo, foo, GLIBC_2_1); 373 libc_hidden_ver(__real_foo, foo) 374 */ 375 376 /* uClibc specific (the above comment was copied from glibc): 377 * 378 * when ppc64 will be supported, we need changes to support 379 * strong_data_alias (used by asm hidden_data_def) 380 * 381 * no versioning support, hidden[_data]_ver are noop 382 * 383 * hidden_def() in asm is _hidden_strong_alias (not strong_alias) 384 * 385 * libc_hidden_proto(foo) should be added after declaration 386 * in the header, or after extern foo... in all source files 387 * (this is discouraged). 388 * libc_hidden_def does not hide __GI_foo itself, although the name 389 * suggests it (hiding is done exclusively by libc_hidden_proto). 390 391 FIXME! - ? 392 * The reasoning to have it after the header w/ foo's prototype is 393 * to get first the __REDIRECT from original header and then create 394 * the __GI_foo alias 395 396 * Hunt for references which still go through PLT (example for x86): 397 * build shared lib, then disassemble it and search for <xxx@plt>: 398 * $ objdump -drx libuClibc-*.so >disasm.txt 399 * $ grep -F '@plt>:' disasm.txt 400 * 401 * In uclibc, malloc/free and related functions should be called 402 * through PLT (making it possible to use alternative malloc), 403 * and possibly some __pthread_xxx functions can be called through PLT 404 * (why?). The rest should not use PLT. 405 */ 406 407 #if (defined __GNUC__ && defined __GNUC_MINOR__ \ 408 && (( __GNUC__ >= 3 && __GNUC_MINOR__ >= 3) || __GNUC__ >= 4) \ 409 ) || defined __ICC 410 # define attribute_hidden __attribute__ ((visibility ("hidden"))) 411 # define attribute_protected __attribute__ ((visibility ("protected"))) 412 # define __hidden_proto_hiddenattr(attrs...) __attribute__ ((visibility ("hidden"), ##attrs)) 413 #else 414 # define attribute_hidden 415 # define attribute_protected 416 # define __hidden_proto_hiddenattr(attrs...) 417 #endif 418 419 #if /*!defined STATIC &&*/ !defined __BCC__ 420 421 # ifndef __ASSEMBLER__ 422 # define hidden_proto(name, attrs...) __hidden_proto(name, __GI_##name, ##attrs) 423 # define __hidden_proto(name, internal, attrs...) \ 424 extern __typeof (name) name __asm__ (__hidden_asmname (#internal)) \ 425 __hidden_proto_hiddenattr (attrs); 426 # define __hidden_asmname(name) __hidden_asmname1 (__USER_LABEL_PREFIX__, name) 427 # define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name) 428 # define __hidden_asmname2(prefix, name) #prefix name 429 # define __hidden_ver1(local, internal, name) \ 430 extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \ 431 extern __typeof (name) __EI_##name __attribute__((alias (__hidden_asmname1 (,#local)))) \ 432 __attribute_copy__ (name) 433 # define hidden_ver(local, name) __hidden_ver1(local, __GI_##name, name); 434 # define hidden_data_ver(local, name) hidden_ver(local, name) 435 # define hidden_def(name) __hidden_ver1(__GI_##name, name, name); 436 # define hidden_data_def(name) hidden_def(name) 437 # define hidden_weak(name) \ 438 __hidden_ver1(__GI_##name, name, name) __attribute__((weak)); 439 # define hidden_data_weak(name) hidden_weak(name) 440 441 # else /* __ASSEMBLER__ */ 442 443 # ifdef HAVE_ASM_SET_DIRECTIVE 444 # define _hidden_strong_alias(original, alias) \ 445 .globl C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 446 .hidden C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 447 .set C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original) 448 # else /* dont have .set directive */ 449 # define _hidden_strong_alias(original, alias) \ 450 .globl C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 451 .hidden C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 452 C_SYMBOL_NAME(alias) = C_SYMBOL_NAME(original) 453 # endif 454 455 # define _hidden_weak_alias(original, alias) \ 456 .hidden C_SYMBOL_NAME(alias) ASM_LINE_SEP \ 457 weak_alias(original, alias) 458 459 /* For assembly, we need to do the opposite of what we do in C: 460 in assembly gcc __REDIRECT stuff is not in place, so functions 461 are defined by its normal name and we need to create the 462 __GI_* alias to it, in C __REDIRECT causes the function definition 463 to use __GI_* name and we need to add alias to the real name. 464 There is no reason to use hidden_weak over hidden_def in assembly, 465 but we provide it for consistency with the C usage. 466 hidden_proto doesn't make sense for assembly but the equivalent 467 is to call via the HIDDEN_JUMPTARGET macro instead of JUMPTARGET. */ 468 # define hidden_def(name) _hidden_strong_alias (name, __GI_##name) 469 # define hidden_weak(name) _hidden_weak_alias (name, __GI_##name) 470 # define hidden_ver(local, name) strong_alias (local, __GI_##name) 471 # define hidden_data_def(name) _hidden_strong_alias (name, __GI_##name) 472 # define hidden_data_weak(name) _hidden_weak_alias (name, __GI_##name) 473 # define hidden_data_ver(local, name) strong_data_alias (local, __GI_##name) 474 # define HIDDEN_JUMPTARGET(name) __GI_##name 475 # endif /* __ASSEMBLER__ */ 476 477 #else /* not SHARED */ 478 479 # ifndef __ASSEMBLER__ 480 # define hidden_proto(name, attrs...) 481 # else 482 # define HIDDEN_JUMPTARGET(name) name 483 # endif /* not __ASSEMBLER__ */ 484 # define hidden_weak(name) 485 # define hidden_def(name) 486 # define hidden_ver(local, name) 487 # define hidden_data_weak(name) 488 # define hidden_data_def(name) 489 # define hidden_data_ver(local, name) 490 491 #endif /* SHARED / not SHARED */ 492 493 494 /* uClibc does not support versioning yet. */ 495 #define versioned_symbol(lib, local, symbol, version) /* weak_alias(local, symbol) */ 496 #undef hidden_ver 497 #define hidden_ver(local, name) /* strong_alias(local, __GI_##name) */ 498 #undef hidden_data_ver 499 #define hidden_data_ver(local, name) /* strong_alias(local,__GI_##name) */ 500 501 #if !defined NOT_IN_libc 502 # define libc_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 503 # define libc_hidden_def(name) hidden_def (name) 504 # define libc_hidden_weak(name) hidden_weak (name) 505 # define libc_hidden_ver(local, name) hidden_ver (local, name) 506 # define libc_hidden_data_def(name) hidden_data_def (name) 507 # define libc_hidden_data_weak(name) hidden_data_weak (name) 508 # define libc_hidden_data_ver(local, name) hidden_data_ver (local, name) 509 #else 510 # define libc_hidden_proto(name, attrs...) 511 # define libc_hidden_def(name) 512 # define libc_hidden_weak(name) 513 # define libc_hidden_ver(local, name) 514 # define libc_hidden_data_def(name) 515 # define libc_hidden_data_weak(name) 516 # define libc_hidden_data_ver(local, name) 517 #endif 518 519 #if defined NOT_IN_libc && defined IS_IN_rtld 520 # define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 521 # define rtld_hidden_def(name) hidden_def (name) 522 # define rtld_hidden_weak(name) hidden_weak (name) 523 # define rtld_hidden_ver(local, name) hidden_ver (local, name) 524 # define rtld_hidden_data_def(name) hidden_data_def (name) 525 # define rtld_hidden_data_weak(name) hidden_data_weak (name) 526 # define rtld_hidden_data_ver(local, name) hidden_data_ver (local, name) 527 #else 528 # define rtld_hidden_proto(name, attrs...) 529 # define rtld_hidden_def(name) 530 # define rtld_hidden_weak(name) 531 # define rtld_hidden_ver(local, name) 532 # define rtld_hidden_data_def(name) 533 # define rtld_hidden_data_weak(name) 534 # define rtld_hidden_data_ver(local, name) 535 #endif 536 537 #if defined NOT_IN_libc && defined IS_IN_libm 538 # define libm_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 539 # define libm_hidden_def(name) hidden_def (name) 540 # define libm_hidden_weak(name) hidden_weak (name) 541 # define libm_hidden_ver(local, name) hidden_ver (local, name) 542 # define libm_hidden_data_def(name) hidden_data_def (name) 543 # define libm_hidden_data_weak(name) hidden_data_weak (name) 544 # define libm_hidden_data_ver(local, name) hidden_data_ver (local, name) 545 #else 546 # define libm_hidden_proto(name, attrs...) 547 # define libm_hidden_def(name) 548 # define libm_hidden_weak(name) 549 # define libm_hidden_ver(local, name) 550 # define libm_hidden_data_def(name) 551 # define libm_hidden_data_weak(name) 552 # define libm_hidden_data_ver(local, name) 553 #endif 554 555 #if defined NOT_IN_libc && defined IS_IN_librt 556 # define librt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 557 # define librt_hidden_def(name) hidden_def (name) 558 # define librt_hidden_weak(name) hidden_weak (name) 559 # define librt_hidden_ver(local, name) hidden_ver (local, name) 560 # define librt_hidden_data_def(name) hidden_data_def (name) 561 # define librt_hidden_data_weak(name) hidden_data_weak (name) 562 # define librt_hidden_data_ver(local, name) hidden_data_ver (local, name) 563 #else 564 # define librt_hidden_proto(name, attrs...) 565 # define librt_hidden_def(name) 566 # define librt_hidden_weak(name) 567 # define librt_hidden_ver(local, name) 568 # define librt_hidden_data_def(name) 569 # define librt_hidden_data_weak(name) 570 # define librt_hidden_data_ver(local, name) 571 #endif 572 573 #if defined NOT_IN_libc && defined IS_IN_libdl 574 # define libdl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 575 # define libdl_hidden_def(name) hidden_def (name) 576 # define libdl_hidden_weak(name) hidden_weak (name) 577 # define libdl_hidden_ver(local, name) hidden_ver (local, name) 578 # define libdl_hidden_data_def(name) hidden_data_def (name) 579 # define libdl_hidden_data_weak(name) hidden_data_weak (name) 580 # define libdl_hidden_data_ver(local, name) hidden_data_ver (local, name) 581 #else 582 # define libdl_hidden_proto(name, attrs...) 583 # define libdl_hidden_def(name) 584 # define libdl_hidden_weak(name) 585 # define libdl_hidden_ver(local, name) 586 # define libdl_hidden_data_def(name) 587 # define libdl_hidden_data_weak(name) 588 # define libdl_hidden_data_ver(local, name) 589 #endif 590 591 #if defined NOT_IN_libc && defined IS_IN_libutil 592 # define libutil_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 593 # define libutil_hidden_def(name) hidden_def (name) 594 # define libutil_hidden_weak(name) hidden_weak (name) 595 # define libutil_hidden_ver(local, name) hidden_ver (local, name) 596 # define libutil_hidden_data_def(name) hidden_data_def (name) 597 # define libutil_hidden_data_weak(name) hidden_data_weak (name) 598 # define libutil_hidden_data_ver(local, name) hidden_data_ver (local, name) 599 #else 600 # define libutil_hidden_proto(name, attrs...) 601 # define libutil_hidden_def(name) 602 # define libutil_hidden_weak(name) 603 # define libutil_hidden_ver(local, name) 604 # define libutil_hidden_data_def(name) 605 # define libutil_hidden_data_weak(name) 606 # define libutil_hidden_data_ver(local, name) 607 #endif 608 609 #if defined NOT_IN_libc && defined IS_IN_libcrypt 610 # define libcrypt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 611 # define libcrypt_hidden_def(name) hidden_def (name) 612 # define libcrypt_hidden_weak(name) hidden_weak (name) 613 # define libcrypt_hidden_ver(local, name) hidden_ver (local, name) 614 # define libcrypt_hidden_data_def(name) hidden_data_def (name) 615 # define libcrypt_hidden_data_weak(name) hidden_data_weak (name) 616 # define libcrypt_hidden_data_ver(local, name) hidden_data_ver (local, name) 617 #else 618 # define libcrypt_hidden_proto(name, attrs...) 619 # define libcrypt_hidden_def(name) 620 # define libcrypt_hidden_weak(name) 621 # define libcrypt_hidden_ver(local, name) 622 # define libcrypt_hidden_data_def(name) 623 # define libcrypt_hidden_data_weak(name) 624 # define libcrypt_hidden_data_ver(local, name) 625 #endif 626 627 #if defined NOT_IN_libc && defined IS_IN_libpthread 628 # define libpthread_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) 629 # define libpthread_hidden_def(name) hidden_def (name) 630 # define libpthread_hidden_weak(name) hidden_weak (name) 631 # define libpthread_hidden_ver(local, name) hidden_ver (local, name) 632 # define libpthread_hidden_data_def(name) hidden_data_def (name) 633 # define libpthread_hidden_data_weak(name) hidden_data_weak (name) 634 # define libpthread_hidden_data_ver(local, name) hidden_data_ver (local, name) 635 #else 636 # define libpthread_hidden_proto(name, attrs...) 637 # define libpthread_hidden_def(name) 638 # define libpthread_hidden_weak(name) 639 # define libpthread_hidden_ver(local, name) 640 # define libpthread_hidden_data_def(name) 641 # define libpthread_hidden_data_weak(name) 642 # define libpthread_hidden_data_ver(local, name) 643 #endif 644 645 #endif /* libc-symbols.h */ 646