include/libc-symbols.h

   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 __ASSEMBLER__
 160 /* GCC understands weak symbols and aliases; use its interface where
 161    possible, instead of embedded assembly language.  */
 162
 163 /* Define ALIASNAME as a strong alias for NAME.  */
 164 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
 165 # define _strong_alias(name, aliasname) \
 166   extern __typeof (name) aliasname __attribute__ ((alias (#name)));
 167 /* Same, but does not check for type match. Use sparingly.
 168    Example: strong_alias(stat,stat64) may fail, this one works: */
 169 # define strong_alias_untyped(name, aliasname) \
 170   _strong_alias_untyped(name, aliasname)
 171 # define _strong_alias_untyped(name, aliasname) \
 172   extern __typeof (aliasname) aliasname __attribute__ ((alias (#name)));
 173
 174 # ifdef HAVE_WEAK_SYMBOLS
 175
 176 /* This comes between the return type and function name in
 177    a function definition to make that definition weak.  */
 178 #  define weak_function __attribute__ ((weak))
 179 #  define weak_const_function __attribute__ ((weak, __const__))
 180
 181 /* Define ALIASNAME as a weak alias for NAME.
 182    If weak aliases are not available, this defines a strong alias.  */
 183 #  define weak_alias(name, aliasname) _weak_alias (name, aliasname)
 184 #  define _weak_alias(name, aliasname) \
 185   extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
 186
 187 /* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined).  */
 188 #  define weak_extern(symbol) _weak_extern (weak symbol)
 189 #  define _weak_extern(expr) _Pragma (#expr)
 190
 191 # else
 192
 193 #  define weak_function /* empty */
 194 #  define weak_const_function __attribute__ ((__const__))
 195
 196 #  define weak_alias(name, aliasname) strong_alias(name, aliasname)
 197 #  define weak_extern(symbol) /* Nothing. */
 198
 199 # endif
 200
 201 #else /* __ASSEMBLER__ */
 202
 203 # ifdef HAVE_ASM_SET_DIRECTIVE
 204 #  define strong_alias(original, alias) \
 205         .globl C_SYMBOL_NAME(alias)             ASM_LINE_SEP \
 206         .set    C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original)
 207 #  define strong_data_alias(original, alias) strong_alias(original, alias)
 208 # else
 209 #  define strong_alias(original, alias) \
 210         .globl C_SYMBOL_NAME(alias)             ASM_LINE_SEP \
 211         C_SYMBOL_NAME(alias) = C_SYMBOL_NAME(original)
 212 #  define strong_data_alias(original, alias) strong_alias(original, alias)
 213 # endif
 214
 215 #  ifdef HAVE_WEAK_SYMBOLS
 216 #   ifdef HAVE_ASM_WEAKEXT_DIRECTIVE
 217 #    define weak_alias(original, alias) \
 218         .weakext C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original)
 219 #    define weak_extern(symbol) \
 220         .weakext C_SYMBOL_NAME(symbol)
 221
 222 #  else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */
 223
 224 #   ifdef HAVE_ASM_SET_DIRECTIVE
 225 #    define weak_alias(original, alias) \
 226         .weak   C_SYMBOL_NAME(alias)                            ASM_LINE_SEP \
 227         .set    C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original)
 228 #   else /* ! HAVE_ASM_SET_DIRECTIVE */
 229 #    define weak_alias(original, alias) \
 230         .weak   C_SYMBOL_NAME(alias)                            ASM_LINE_SEP \
 231         C_SYMBOL_NAME(alias) = C_SYMBOL_NAME(original)
 232 #   endif
 233 #   define weak_extern(symbol) \
 234         .weak   C_SYMBOL_NAME(symbol)
 235
 236 #  endif /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */
 237
 238 # else /* ! HAVE_WEAK_SYMBOLS */
 239
 240 #  define weak_alias(original, alias) strong_alias(original, alias)
 241 #  define weak_extern(symbol) /* Nothing */
 242 # endif /* ! HAVE_WEAK_SYMBOLS */
 243
 244 #endif /* __ASSEMBLER__ */
 245
 246
 247 /* On some platforms we can make internal function calls (i.e., calls of
 248    functions not exported) a bit faster by using a different calling
 249    convention.  */
 250 #ifndef internal_function
 251 # define internal_function      /* empty */
 252 #endif
 253
 254
 255 /* We want the .gnu.warning.SYMBOL section to be unallocated.  */
 256 #define __make_section_unallocated(section_string)      \
 257   __asm__ (".section " section_string "\n\t.previous");
 258
 259
 260 /* Tacking on "\n#APP\n\t#" to the section name makes gcc put it's bogus
 261    section attributes on what looks like a comment to the assembler.  */
 262 #ifdef __sparc__ /* HAVE_SECTION_QUOTES */
 263 # define __sec_comment "\"\n#APP\n\t#\""
 264 #else
 265 # define __sec_comment "\n#APP\n\t#"
 266 #endif
 267
 268
 269 /* When a reference to SYMBOL is encountered, the linker will emit a
 270    warning message MSG.  */
 271 #define link_warning(symbol, msg) \
 272   __make_section_unallocated (".gnu.warning." #symbol) \
 273   static const char __evoke_link_warning_##symbol[]     \
 274     __attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \
 275     = msg;
 276
 277 /* Handling on non-exported internal names.  We have to do this only
 278    for shared code.  */
 279 #ifdef SHARED
 280 # define INTUSE(name) name##_internal
 281 # define INTDEF(name) strong_alias (name, name##_internal)
 282 # define INTVARDEF(name) _INTVARDEF (name, name##_internal)
 283 # if defined HAVE_VISIBILITY_ATTRIBUTE
 284 #  define _INTVARDEF(name, aliasname) \
 285   extern __typeof (name) aliasname __attribute__ ((alias (#name), \
 286                                                    visibility ("hidden")));
 287 # else
 288 #  define _INTVARDEF(name, aliasname) \
 289   extern __typeof (name) aliasname __attribute__ ((alias (#name)));
 290 # endif
 291 # define INTDEF2(name, newname) strong_alias (name, newname##_internal)
 292 # define INTVARDEF2(name, newname) _INTVARDEF (name, newname##_internal)
 293 #else
 294 # define INTUSE(name) name
 295 # define INTDEF(name)
 296 # define INTVARDEF(name)
 297 # define INTDEF2(name, newname)
 298 # define INTVARDEF2(name, newname)
 299 #endif
 300
 301
 302 /* The following macros are used for PLT bypassing within libc.so
 303    (and if needed other libraries similarly).
 304
 305    If calls to foo within libc.so should always go to foo defined in libc.so,
 306    then in include/foo.h you add:
 307
 308    int foo(int __bar);
 309    libc_hidden_proto(foo)
 310
 311    line and after the foo function definition:
 312
 313    int foo(int __bar) {
 314      return __bar;
 315    }
 316    libc_hidden_def(foo)
 317
 318    or
 319
 320    int foo(int __bar) {
 321      return __bar;
 322    }
 323    libc_hidden_weak(foo)
 324
 325    Similarly for global data: if references to foo within libc.so
 326    should always go to foo defined in libc.so, then in include/foo.h:
 327
 328    extern int foo;
 329    libc_hidden_proto(foo)
 330
 331    and after foo's definition:
 332
 333    int foo = INITIAL_FOO_VALUE;
 334    libc_hidden_data_def(foo)
 335
 336    or
 337
 338    int foo = INITIAL_FOO_VALUE;
 339    libc_hidden_data_weak(foo)
 340
 341    If foo is normally just an alias (strong or weak) to some other function,
 342    you should use the normal strong_alias first, then add libc_hidden_def
 343    or libc_hidden_weak:
 344
 345    int baz(int __bar) {
 346      return __bar;
 347    }
 348    strong_alias(baz, foo)
 349    libc_hidden_weak(foo)
 350
 351    If the function should be internal to multiple objects, say ld.so and
 352    libc.so, the best way is to use:
 353
 354    #if !defined NOT_IN_libc || defined IS_IN_rtld
 355    hidden_proto(foo)
 356    #endif
 357
 358    in include/foo.h and the normal macros at all function definitions
 359    depending on what DSO they belong to.
 360
 361    If versioned_symbol macro is used to define foo,
 362    libc_hidden_ver macro should be used, as in:
 363
 364    int __real_foo(int __bar) {
 365      return __bar;
 366    }
 367    versioned_symbol(libc, __real_foo, foo, GLIBC_2_1);
 368    libc_hidden_ver(__real_foo, foo)
 369  */
 370
 371 /* uClibc specific (the above comment was copied from glibc):
 372  *
 373  * when ppc64 will be supported, we need changes to support
 374  * strong_data_alias (used by asm hidden_data_def)
 375  *
 376  * no versioning support, hidden[_data]_ver are noop
 377  *
 378  * hidden_def() in asm is _hidden_strong_alias (not strong_alias)
 379  *
 380  * libc_hidden_proto(foo) should be added after declaration
 381  * in the header, or after extern foo... in all source files
 382  * (this is discouraged).
 383  * libc_hidden_def does not hide __GI_foo itself, although the name
 384  * suggests it (hiding is done exclusively by libc_hidden_proto).
 385
 386 FIXME! - ?
 387  * The reasoning to have it after the header w/ foo's prototype is
 388  * to get first the __REDIRECT from original header and then create
 389  * the __GI_foo alias
 390
 391  * Hunt for references which still go through PLT (example for x86):
 392  * build shared lib, then disassemble it and search for <xxx@plt>:
 393  * $ objdump -drx libuClibc-*.so >disasm.txt
 394  * $ grep -F '@plt>:' disasm.txt
 395  *
 396  * In uclibc, malloc/free and related functions should be called
 397  * through PLT (making it possible to use alternative malloc),
 398  * and possibly some __pthread_xxx functions can be called through PLT
 399  * (why?). The rest should not use PLT.
 400  */
 401
 402 #if (defined __GNUC__ && defined __GNUC_MINOR__ \
 403         && (( __GNUC__ >= 3 && __GNUC_MINOR__ >= 3) || __GNUC__ >= 4) \
 404     ) || defined __ICC
 405 # define attribute_hidden __attribute__ ((visibility ("hidden")))
 406 # define attribute_protected __attribute__ ((visibility ("protected")))
 407 # define __hidden_proto_hiddenattr(attrs...) __attribute__ ((visibility ("hidden"), ##attrs))
 408 #else
 409 # define attribute_hidden
 410 # define attribute_protected
 411 # define __hidden_proto_hiddenattr(attrs...)
 412 #endif
 413
 414 #if /*!defined STATIC &&*/ !defined __BCC__
 415
 416 # ifndef __ASSEMBLER__
 417 #  define hidden_proto(name, attrs...) __hidden_proto(name, __GI_##name, ##attrs)
 418 #  define __hidden_proto(name, internal, attrs...) \
 419         extern __typeof (name) name __asm__ (__hidden_asmname (#internal)) \
 420         __hidden_proto_hiddenattr (attrs);
 421 #  define __hidden_asmname(name) __hidden_asmname1 (__USER_LABEL_PREFIX__, name)
 422 #  define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name)
 423 #  define __hidden_asmname2(prefix, name) #prefix name
 424 #  define __hidden_ver1(local, internal, name) \
 425         extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \
 426         extern __typeof (name) __EI_##name __attribute__((alias (__hidden_asmname1 (,#local))))
 427 #  define hidden_ver(local, name)       __hidden_ver1(local, __GI_##name, name);
 428 #  define hidden_data_ver(local, name)  hidden_ver(local, name)
 429 #  define hidden_def(name)              __hidden_ver1(__GI_##name, name, name);
 430 #  define hidden_data_def(name)         hidden_def(name)
 431 #  define hidden_weak(name) \
 432         __hidden_ver1(__GI_##name, name, name) __attribute__((weak));
 433 #  define hidden_data_weak(name)        hidden_weak(name)
 434
 435 # else /* __ASSEMBLER__ */
 436
 437 #  ifdef HAVE_ASM_SET_DIRECTIVE
 438 #   define _hidden_strong_alias(original, alias) \
 439         .globl C_SYMBOL_NAME(alias)             ASM_LINE_SEP \
 440         .hidden C_SYMBOL_NAME(alias)                            ASM_LINE_SEP \
 441         .set    C_SYMBOL_NAME(alias),C_SYMBOL_NAME(original)
 442 #  else /* dont have .set directive */
 443 #   define _hidden_strong_alias(original, alias) \
 444         .globl C_SYMBOL_NAME(alias)             ASM_LINE_SEP \
 445         .hidden C_SYMBOL_NAME(alias)                            ASM_LINE_SEP \
 446         C_SYMBOL_NAME(alias) = C_SYMBOL_NAME(original)
 447 #  endif
 448
 449 #  define _hidden_weak_alias(original, alias) \
 450         .hidden C_SYMBOL_NAME(alias)                            ASM_LINE_SEP \
 451         weak_alias(original, alias)
 452
 453 /* For assembly, we need to do the opposite of what we do in C:
 454    in assembly gcc __REDIRECT stuff is not in place, so functions
 455    are defined by its normal name and we need to create the
 456    __GI_* alias to it, in C __REDIRECT causes the function definition
 457    to use __GI_* name and we need to add alias to the real name.
 458    There is no reason to use hidden_weak over hidden_def in assembly,
 459    but we provide it for consistency with the C usage.
 460    hidden_proto doesn't make sense for assembly but the equivalent
 461    is to call via the HIDDEN_JUMPTARGET macro instead of JUMPTARGET.  */
 462 #  define hidden_def(name)      _hidden_strong_alias (name, __GI_##name)
 463 #  define hidden_weak(name)     _hidden_weak_alias (name, __GI_##name)
 464 #  define hidden_ver(local, name) strong_alias (local, __GI_##name)
 465 #  define hidden_data_def(name) _hidden_strong_alias (name, __GI_##name)
 466 #  define hidden_data_weak(name)        _hidden_weak_alias (name, __GI_##name)
 467 #  define hidden_data_ver(local, name) strong_data_alias (local, __GI_##name)
 468 #  define HIDDEN_JUMPTARGET(name) __GI_##name
 469 # endif /* __ASSEMBLER__ */
 470
 471 #else /* not SHARED */
 472
 473 # ifndef __ASSEMBLER__
 474 #  define hidden_proto(name, attrs...)
 475 # else
 476 #  define HIDDEN_JUMPTARGET(name) name
 477 # endif /* not __ASSEMBLER__ */
 478 # define hidden_weak(name)
 479 # define hidden_def(name)
 480 # define hidden_ver(local, name)
 481 # define hidden_data_weak(name)
 482 # define hidden_data_def(name)
 483 # define hidden_data_ver(local, name)
 484
 485 #endif /* SHARED / not SHARED */
 486
 487
 488 /* uClibc does not support versioning yet. */
 489 #define versioned_symbol(lib, local, symbol, version) /* weak_alias(local, symbol) */
 490 #undef hidden_ver
 491 #define hidden_ver(local, name) /* strong_alias(local, __GI_##name) */
 492 #undef hidden_data_ver
 493 #define hidden_data_ver(local, name) /* strong_alias(local,__GI_##name) */
 494
 495 #if !defined NOT_IN_libc
 496 # define libc_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 497 # define libc_hidden_def(name) hidden_def (name)
 498 # define libc_hidden_weak(name) hidden_weak (name)
 499 # define libc_hidden_ver(local, name) hidden_ver (local, name)
 500 # define libc_hidden_data_def(name) hidden_data_def (name)
 501 # define libc_hidden_data_weak(name) hidden_data_weak (name)
 502 # define libc_hidden_data_ver(local, name) hidden_data_ver (local, name)
 503 #else
 504 # define libc_hidden_proto(name, attrs...)
 505 # define libc_hidden_def(name)
 506 # define libc_hidden_weak(name)
 507 # define libc_hidden_ver(local, name)
 508 # define libc_hidden_data_def(name)
 509 # define libc_hidden_data_weak(name)
 510 # define libc_hidden_data_ver(local, name)
 511 #endif
 512
 513 #if defined NOT_IN_libc && defined IS_IN_rtld
 514 # define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 515 # define rtld_hidden_def(name) hidden_def (name)
 516 # define rtld_hidden_weak(name) hidden_weak (name)
 517 # define rtld_hidden_ver(local, name) hidden_ver (local, name)
 518 # define rtld_hidden_data_def(name) hidden_data_def (name)
 519 # define rtld_hidden_data_weak(name) hidden_data_weak (name)
 520 # define rtld_hidden_data_ver(local, name) hidden_data_ver (local, name)
 521 #else
 522 # define rtld_hidden_proto(name, attrs...)
 523 # define rtld_hidden_def(name)
 524 # define rtld_hidden_weak(name)
 525 # define rtld_hidden_ver(local, name)
 526 # define rtld_hidden_data_def(name)
 527 # define rtld_hidden_data_weak(name)
 528 # define rtld_hidden_data_ver(local, name)
 529 #endif
 530
 531 #if defined NOT_IN_libc && defined IS_IN_libm
 532 # define libm_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 533 # define libm_hidden_def(name) hidden_def (name)
 534 # define libm_hidden_weak(name) hidden_weak (name)
 535 # define libm_hidden_ver(local, name) hidden_ver (local, name)
 536 # define libm_hidden_data_def(name) hidden_data_def (name)
 537 # define libm_hidden_data_weak(name) hidden_data_weak (name)
 538 # define libm_hidden_data_ver(local, name) hidden_data_ver (local, name)
 539 #else
 540 # define libm_hidden_proto(name, attrs...)
 541 # define libm_hidden_def(name)
 542 # define libm_hidden_weak(name)
 543 # define libm_hidden_ver(local, name)
 544 # define libm_hidden_data_def(name)
 545 # define libm_hidden_data_weak(name)
 546 # define libm_hidden_data_ver(local, name)
 547 #endif
 548
 549 #if defined NOT_IN_libc && defined IS_IN_librt
 550 # define librt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 551 # define librt_hidden_def(name) hidden_def (name)
 552 # define librt_hidden_weak(name) hidden_weak (name)
 553 # define librt_hidden_ver(local, name) hidden_ver (local, name)
 554 # define librt_hidden_data_def(name) hidden_data_def (name)
 555 # define librt_hidden_data_weak(name) hidden_data_weak (name)
 556 # define librt_hidden_data_ver(local, name) hidden_data_ver (local, name)
 557 #else
 558 # define librt_hidden_proto(name, attrs...)
 559 # define librt_hidden_def(name)
 560 # define librt_hidden_weak(name)
 561 # define librt_hidden_ver(local, name)
 562 # define librt_hidden_data_def(name)
 563 # define librt_hidden_data_weak(name)
 564 # define librt_hidden_data_ver(local, name)
 565 #endif
 566
 567 #if defined NOT_IN_libc && defined IS_IN_libdl
 568 # define libdl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 569 # define libdl_hidden_def(name) hidden_def (name)
 570 # define libdl_hidden_weak(name) hidden_weak (name)
 571 # define libdl_hidden_ver(local, name) hidden_ver (local, name)
 572 # define libdl_hidden_data_def(name) hidden_data_def (name)
 573 # define libdl_hidden_data_weak(name) hidden_data_weak (name)
 574 # define libdl_hidden_data_ver(local, name) hidden_data_ver (local, name)
 575 #else
 576 # define libdl_hidden_proto(name, attrs...)
 577 # define libdl_hidden_def(name)
 578 # define libdl_hidden_weak(name)
 579 # define libdl_hidden_ver(local, name)
 580 # define libdl_hidden_data_def(name)
 581 # define libdl_hidden_data_weak(name)
 582 # define libdl_hidden_data_ver(local, name)
 583 #endif
 584
 585 #if defined NOT_IN_libc && defined IS_IN_libutil
 586 # define libutil_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 587 # define libutil_hidden_def(name) hidden_def (name)
 588 # define libutil_hidden_weak(name) hidden_weak (name)
 589 # define libutil_hidden_ver(local, name) hidden_ver (local, name)
 590 # define libutil_hidden_data_def(name) hidden_data_def (name)
 591 # define libutil_hidden_data_weak(name) hidden_data_weak (name)
 592 # define libutil_hidden_data_ver(local, name) hidden_data_ver (local, name)
 593 #else
 594 # define libutil_hidden_proto(name, attrs...)
 595 # define libutil_hidden_def(name)
 596 # define libutil_hidden_weak(name)
 597 # define libutil_hidden_ver(local, name)
 598 # define libutil_hidden_data_def(name)
 599 # define libutil_hidden_data_weak(name)
 600 # define libutil_hidden_data_ver(local, name)
 601 #endif
 602
 603 #if defined NOT_IN_libc && defined IS_IN_libcrypt
 604 # define libcrypt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 605 # define libcrypt_hidden_def(name) hidden_def (name)
 606 # define libcrypt_hidden_weak(name) hidden_weak (name)
 607 # define libcrypt_hidden_ver(local, name) hidden_ver (local, name)
 608 # define libcrypt_hidden_data_def(name) hidden_data_def (name)
 609 # define libcrypt_hidden_data_weak(name) hidden_data_weak (name)
 610 # define libcrypt_hidden_data_ver(local, name) hidden_data_ver (local, name)
 611 #else
 612 # define libcrypt_hidden_proto(name, attrs...)
 613 # define libcrypt_hidden_def(name)
 614 # define libcrypt_hidden_weak(name)
 615 # define libcrypt_hidden_ver(local, name)
 616 # define libcrypt_hidden_data_def(name)
 617 # define libcrypt_hidden_data_weak(name)
 618 # define libcrypt_hidden_data_ver(local, name)
 619 #endif
 620
 621 #if defined NOT_IN_libc && defined IS_IN_libpthread
 622 # define libpthread_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
 623 # define libpthread_hidden_def(name) hidden_def (name)
 624 # define libpthread_hidden_weak(name) hidden_weak (name)
 625 # define libpthread_hidden_ver(local, name) hidden_ver (local, name)
 626 # define libpthread_hidden_data_def(name) hidden_data_def (name)
 627 # define libpthread_hidden_data_weak(name) hidden_data_weak (name)
 628 # define libpthread_hidden_data_ver(local, name) hidden_data_ver (local, name)
 629 #else
 630 # define libpthread_hidden_proto(name, attrs...)
 631 # define libpthread_hidden_def(name)
 632 # define libpthread_hidden_weak(name)
 633 # define libpthread_hidden_ver(local, name)
 634 # define libpthread_hidden_data_def(name)
 635 # define libpthread_hidden_data_weak(name)
 636 # define libpthread_hidden_data_ver(local, name)
 637 #endif
 638
 639 #endif /* libc-symbols.h */