1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Berkeley Software Design, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 37 * $FreeBSD: src/sys/sys/cdefs.h,v 1.28.2.8 2002/09/18 04:05:13 mikeh Exp $ 38 */ 39 40 #ifndef _SYS_CDEFS_H_ 41 #define _SYS_CDEFS_H_ 42 43 /* 44 * Testing against Clang-specific extensions. 45 */ 46 47 #ifndef __has_extension 48 #define __has_extension __has_feature 49 #endif 50 #ifndef __has_feature 51 #define __has_feature(x) 0 52 #endif 53 #ifndef __has_include 54 #define __has_include(x) 0 55 #endif 56 #ifndef __has_builtin 57 #define __has_builtin(x) 0 58 #endif 59 60 /* 61 * Macro to test if we are using a specific version of gcc or later. 62 */ 63 #if defined(__GNUC__) && !defined(__INTEL_COMPILER) 64 #define __GNUC_PREREQ__(ma, mi) \ 65 (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)) 66 #else 67 #define __GNUC_PREREQ__(ma, mi) 0 68 #endif 69 70 #if defined(__cplusplus) 71 #if __GNUC_PREREQ__(4, 0) 72 #define __BEGIN_DECLS _Pragma("GCC visibility push(default)") extern "C" { 73 #define __END_DECLS } _Pragma("GCC visibility pop") 74 #else 75 #define __BEGIN_DECLS extern "C" { 76 #define __END_DECLS } 77 #endif 78 #else 79 #define __BEGIN_DECLS 80 #define __END_DECLS 81 #endif 82 83 /* 84 * The __VM_CACHELINE_SIZE macro defines the common cache line alignment 85 * size that can be found across most recent and somewhat latest Intel 86 * hardware, i.e. L1 cache sizes etc. 87 * 88 * If needed, this value can be TUNED. Suitable values for this macro 89 * are 32, 64 and 128 bytes. The unit of measurement for this macro is 90 * bytes. 91 * 92 * XXX: This macro and related macros will eventually move to a MD 93 * header, but currently, we do need such a hierarchy. 94 */ 95 #define __VM_CACHELINE_SIZE 64 96 #define __VM_CACHELINE_MASK (__VM_CACHELINE_SIZE - 1) 97 #define __VM_CACHELINE_ALIGN(n) \ 98 (((n) + __VM_CACHELINE_MASK) & ~__VM_CACHELINE_MASK) 99 100 /* 101 * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 102 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 103 * The __CONCAT macro is a bit tricky to use if it must work in non-ANSI 104 * mode -- there must be no spaces between its arguments, and for nested 105 * __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also 106 * concatenate double-quoted strings produced by the __STRING macro, but 107 * this only works with ANSI C. 108 * 109 * __XSTRING is like __STRING, but it expands any macros in its argument 110 * first. It is only available with ANSI C. 111 */ 112 #if defined(__STDC__) || defined(__cplusplus) 113 #define __P(protos) protos /* full-blown ANSI C */ 114 #define __CONCAT1(x,y) x ## y 115 #define __CONCAT(x,y) __CONCAT1(x,y) 116 #define __STRING(x) #x /* stringify without expanding x */ 117 #define __XSTRING(x) __STRING(x) /* expand x, then stringify */ 118 119 #define __const const /* define reserved names to standard */ 120 #define __signed signed 121 #define __volatile volatile 122 #if defined(__cplusplus) 123 #define __inline inline /* convert to C++ keyword */ 124 #else 125 #ifndef __GNUC__ 126 #define __inline /* delete GCC keyword */ 127 #endif /* !__GNUC__ */ 128 #endif /* !__cplusplus */ 129 130 #else /* !(__STDC__ || __cplusplus) */ 131 #define __P(protos) () /* traditional C preprocessor */ 132 #define __CONCAT(x,y) x/**/y 133 #define __STRING(x) "x" 134 135 #ifndef __GNUC__ 136 #define __const /* delete pseudo-ANSI C keywords */ 137 #define __inline 138 #define __signed 139 #define __volatile 140 /* 141 * In non-ANSI C environments, new programs will want ANSI-only C keywords 142 * deleted from the program and old programs will want them left alone. 143 * When using a compiler other than gcc, programs using the ANSI C keywords 144 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. 145 * When using "gcc -traditional", we assume that this is the intent; if 146 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. 147 */ 148 #ifndef NO_ANSI_KEYWORDS 149 #define const /* delete ANSI C keywords */ 150 #define inline 151 #define signed 152 #define volatile 153 #endif /* !NO_ANSI_KEYWORDS */ 154 #endif /* !__GNUC__ */ 155 #endif /* !(__STDC__ || __cplusplus) */ 156 157 /* 158 * Compiler-dependent macros to help declare dead (non-returning) and 159 * pure (no side effects) functions, and unused variables. They are 160 * null except for versions of gcc that are known to support the features 161 * properly (old versions of gcc-2 supported the dead and pure features 162 * in a different (wrong) way). 163 */ 164 #ifdef lint 165 166 #define __dead2 167 #define __pure 168 #define __pure2 169 #define __unused 170 #define __packed 171 #define __aligned(x) 172 #define __section(x) 173 #define __always_inline 174 #define __nonnull(x) 175 176 #else 177 178 #if !__GNUC_PREREQ__(2, 7) 179 #define __dead2 180 #define __pure2 181 #define __unused 182 #endif 183 184 #if __GNUC_PREREQ__(2, 7) 185 #define __dead2 __attribute__((__noreturn__)) 186 #define __pure2 __attribute__((__const__)) 187 #define __unused __attribute__((__unused__)) 188 #define __packed __attribute__((__packed__)) 189 #define __aligned(x) __attribute__((__aligned__(x))) 190 #define __section(x) __attribute__((__section__(x))) 191 #endif 192 193 #if __GNUC_PREREQ__(2, 96) 194 #define __pure __attribute__((__pure__)) 195 #else 196 #define __pure __pure2 197 #endif 198 199 #if __GNUC_PREREQ__(3, 1) 200 #define __always_inline __attribute__((__always_inline__)) 201 #define __noinline __attribute__((__noinline__)) 202 #else 203 #define __always_inline 204 #define __noinline 205 #endif 206 207 #if __GNUC_PREREQ__(3, 3) 208 #define __nonnull(x) __attribute__((__nonnull__(x))) 209 #define __used __attribute__((__used__)) 210 #else 211 #define __nonnull(x) 212 #define __used __unused 213 #endif 214 215 #endif /* LINT */ 216 217 #if !__GNUC_PREREQ__(2, 7) && __STDC_VERSION < 199901 218 #define __func__ NULL 219 #endif 220 221 #if (__GNUC_PREREQ__(2, 0) && !defined(__STRICT_ANSI)) || \ 222 __STDC_VERSION__ >= 199901 223 #define __LONG_LONG_SUPPORTED 224 #endif 225 226 /* 227 * GNU C version 2.96 adds explicit branch prediction so that 228 * the CPU back-end can hint the processor and also so that 229 * code blocks can be reordered such that the predicted path 230 * sees a more linear flow, thus improving cache behavior, etc. 231 * 232 * The following two macros provide us with a way to utilize this 233 * compiler feature. Use __predict_true() if you expect the expression 234 * to evaluate to true, and __predict_false() if you expect the 235 * expression to evaluate to false. 236 * 237 * A few notes about usage: 238 * 239 * * Generally, __predict_false() error condition checks (unless 240 * you have some _strong_ reason to do otherwise, in which case 241 * document it), and/or __predict_true() `no-error' condition 242 * checks, assuming you want to optimize for the no-error case. 243 * 244 * * Other than that, if you don't know the likelihood of a test 245 * succeeding from empirical or other `hard' evidence, don't 246 * make predictions. 247 * 248 * * These are meant to be used in places that are run `a lot'. 249 * It is wasteful to make predictions in code that is run 250 * seldomly (e.g. at subsystem initialization time) as the 251 * basic block reordering that this affects can often generate 252 * larger code. 253 */ 254 #if __GNUC_PREREQ__(2, 96) 255 #define __predict_true(exp) __builtin_expect((exp), 1) 256 #define __predict_false(exp) __builtin_expect((exp), 0) 257 #else 258 #define __predict_true(exp) (exp) 259 #define __predict_false(exp) (exp) 260 #endif 261 262 /* 263 * GCC 2.95 and later provides `__restrict' as an extention to C90 to support 264 * the C99-specific `restrict' type qualifier. We happen to use `__restrict' 265 * as a way to define the `restrict' type qualifier without disturbing older 266 * software that is unaware of C99 keywords. 267 */ 268 #if !__GNUC_PREREQ__(2, 95) 269 #if __STDC_VERSION__ < 199901 270 #define __restrict 271 #else 272 #define __restrict restrict 273 #endif 274 #endif 275 276 /* 277 * Compiler-dependent macros to declare that functions take printf-like 278 * or scanf-like arguments. They are null except for versions of gcc 279 * that are known to support the features properly (old versions of gcc-2 280 * didn't permit keeping the keywords out of the application namespace). 281 * 282 * The printf0like macro for GCC 2 uses DragonFly specific compiler extensions. 283 */ 284 #if !__GNUC_PREREQ__(2, 7) 285 #define __printflike(fmtarg, firstvararg) 286 #define __scanflike(fmtarg, firstvararg) 287 #define __printf0like(fmtarg, firstvararg) 288 #define __format_arg(fmtarg) 289 #elif __GNUC_PREREQ__(3, 0) 290 #define __printflike(fmtarg, firstvararg) \ 291 __attribute__((__nonnull__(fmtarg), \ 292 __format__ (__printf__, fmtarg, firstvararg))) 293 #define __printf0like(fmtarg, firstvararg) \ 294 __attribute__((__format__ (__printf__, fmtarg, firstvararg))) 295 #define __scanflike(fmtarg, firstvararg) \ 296 __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) 297 #define __format_arg(fmtarg) \ 298 __attribute__((__format_arg__ (fmtarg))) 299 300 #else 301 #define __printflike(fmtarg, firstvararg) \ 302 __attribute__((__format__ (__printf__, fmtarg, firstvararg))) 303 #define __printf0like(fmtarg, firstvararg) \ 304 __attribute__((__format__ (__printf0__, fmtarg, firstvararg))) 305 #define __scanflike(fmtarg, firstvararg) \ 306 __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) 307 #define __format_arg(fmtarg) \ 308 __attribute__((__format_arg__ (fmtarg))) 309 310 #endif 311 312 #if !__GNUC_PREREQ__(3, 0) 313 #define __ARRAY_ZERO 0 314 #else 315 #define __ARRAY_ZERO 316 #endif 317 318 #if __GNUC_PREREQ__(4, 0) 319 #define __dso_public __attribute__((__visibility__("default"))) 320 #define __dso_hidden __attribute__((__visibility__("hidden"))) 321 #else 322 #define __dso_public 323 #define __dso_hidden 324 #endif 325 326 /* 327 * A convenient constructor macro, GCC 4.3.0 added priority support to 328 * constructors, provide a compatible interface for both. 329 */ 330 #if __GNUC_PREREQ__(4, 3) 331 #define __constructor(prio) __attribute__((constructor(prio))) 332 #else 333 #define __constructor(prio) __attribute__((constructor)) 334 #endif 335 336 /* 337 * Handy GCC based macros: 338 * 339 * __cachealign: 340 * 341 * The __cachealign macro can be used for cache line aligning structures 342 * of small to medium size. It aligns the particular structure or 343 * storage type to a system default cache line alignment, thus giving us 344 * a much more better cache utilization by making the hardware work at 345 * its best burst speeds. 346 * 347 * __usereg: 348 * 349 * The __usereg macro can/should be used when a function contains 350 * arguments not more than 3. It can be very useful to us due to the 351 * message-passing nature of the kernel. 352 * 353 * !!NOTE - USAGE INFORMATION!! 354 * 355 * The __cachealign macro should not be used for data structures that are 356 * as big struct proc, struct vnode, struct thread, and other structs which 357 * are as big as them; simply because it will be useless in that case. 358 * 359 * The __usereg macro should be used whenever possible, i.e., when a function 360 * does not exceed more than 3 arguments, and should not be used for vararg 361 * type functions. 362 * 363 * In other words, AVOID MISUSE OF THESE MACROS. :-) 364 */ 365 #ifdef __GNUC__ 366 #define __cachealign __attribute__((__aligned__(__VM_CACHELINE_SIZE))) 367 #define __usereg __attribute__((__regparm__(3))) 368 #else 369 #define __cachealign 370 #define __usereg 371 #endif 372 373 #ifdef __GNUC__ 374 #define __strong_reference(sym,aliassym) \ 375 extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym))); 376 #define __weak_reference(sym,alias) \ 377 __asm__(".weak " #alias); \ 378 __asm__(".equ " #alias ", " #sym) 379 #define __warn_references(sym,msg) \ 380 __asm__(".section .gnu.warning." #sym); \ 381 __asm__(".asciz \"" msg "\""); \ 382 __asm__(".previous") 383 #endif /* __GNUC__ */ 384 385 #if defined(__GNUC__) 386 #define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"") 387 #endif 388 389 #ifndef __RCSID 390 #define __RCSID(s) __IDSTRING(rcsid,s) 391 #endif 392 393 #ifndef __RCSID_SOURCE 394 #define __RCSID_SOURCE(s) __IDSTRING(rcsid_source,s) 395 #endif 396 397 #ifndef __COPYRIGHT 398 #define __COPYRIGHT(s) __IDSTRING(copyright,s) 399 #endif 400 401 #ifndef __DECONST 402 #define __DECONST(type, var) ((type)(uintptr_t)(const void *)(var)) 403 #endif 404 405 #ifndef __DEVOLATILE 406 #define __DEVOLATILE(type, var) ((type)(uintptr_t)(volatile void *)(var)) 407 #endif 408 409 #ifndef __DEQUALIFY 410 #define __DEQUALIFY(type, var) ((type)(uintptr_t)(const volatile void *)(var)) 411 #endif 412 413 /* 414 * Keywords added in C11. 415 */ 416 417 #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L 418 419 #define _Noreturn __dead2 420 421 #endif /* __STDC_VERSION__ || __STDC_VERSION__ < 201112L */ 422 423 #if !__has_extension(c_static_assert) 424 #if (defined(__cplusplus) && __cplusplus >= 201103L) || \ 425 __has_extension(cxx_static_assert) 426 #define _Static_assert(x, y) static_assert(x, y) 427 #elif defined(__COUNTER__) 428 #define _Static_assert(x, y) __Static_assert(x, __COUNTER__) 429 #define __Static_assert(x, y) ___Static_assert(x, y) 430 #define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] 431 #else 432 #define _Static_assert(x, y) struct __hack 433 #endif 434 #endif 435 436 /* 437 * Emulation of C11 _Generic(). Unlike the previously defined C11 438 * keywords, it is not possible to implement this using exactly the same 439 * syntax. Therefore implement something similar under the name 440 * __generic(). Unlike _Generic(), this macro can only distinguish 441 * between a single type, so it requires nested invocations to 442 * distinguish multiple cases. 443 */ 444 445 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L 446 #define __generic(expr, t, yes, no) \ 447 _Generic(expr, t: yes, default: no) 448 #elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus) 449 #define __generic(expr, t, yes, no) \ 450 __builtin_choose_expr( \ 451 __builtin_types_compatible_p(__typeof(expr), t), yes, no) 452 #endif 453 454 /*- 455 * The following definitions are an extension of the behavior originally 456 * implemented in <sys/_posix.h>, but with a different level of granularity. 457 * POSIX.1 requires that the macros we test be defined before any standard 458 * header file is included. 459 * 460 * Here's a quick run-down of the versions: 461 * defined(_POSIX_SOURCE) 1003.1-1988 462 * _POSIX_C_SOURCE == 1 1003.1-1990 463 * _POSIX_C_SOURCE == 2 1003.2-1992 C Language Binding Option 464 * _POSIX_C_SOURCE == 199309 1003.1b-1993 465 * _POSIX_C_SOURCE == 199506 1003.1c-1995, 1003.1i-1995, 466 * and the omnibus ISO/IEC 9945-1: 1996 467 * _POSIX_C_SOURCE == 200112 1003.1-2001 468 * _POSIX_C_SOURCE == 200809 1003.1-2008 469 * 470 * In addition, the X/Open Portability Guide, which is now the Single UNIX 471 * Specification, defines a feature-test macro which indicates the version of 472 * that specification, and which subsumes _POSIX_C_SOURCE. 473 * 474 * Our macros begin with two underscores to avoid namespace screwage. 475 */ 476 477 /* 478 * If no special macro was specified, make the DragonFly extensions 479 * available. Also make them available when requested so. 480 */ 481 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) && \ 482 !defined(_ANSI_SOURCE) && !defined(_C99_SOURCE)) || \ 483 defined(_DRAGONFLY_SOURCE) || defined(_NETBSD_SOURCE) 484 #define __DF_VISIBLE 1 485 #else 486 #define __DF_VISIBLE 0 487 #endif 488 489 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */ 490 #if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE - 0) == 1 491 #undef _POSIX_C_SOURCE /* Probably illegal, but beyond caring now. */ 492 #define _POSIX_C_SOURCE 199009 493 #endif 494 495 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */ 496 #if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE - 0) == 2 497 #undef _POSIX_C_SOURCE 498 #define _POSIX_C_SOURCE 199209 499 #endif 500 501 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */ 502 #ifdef _XOPEN_SOURCE 503 #if _XOPEN_SOURCE - 0 >= 700 504 #define __XSI_VISIBLE 700 505 #undef _POSIX_C_SOURCE 506 #define _POSIX_C_SOURCE 200809 507 #elif _XOPEN_SOURCE - 0 >= 600 508 #define __XSI_VISIBLE 600 509 #undef _POSIX_C_SOURCE 510 #define _POSIX_C_SOURCE 200112 511 #elif _XOPEN_SOURCE - 0 >= 500 512 #define __XSI_VISIBLE 500 513 #undef _POSIX_C_SOURCE 514 #define _POSIX_C_SOURCE 199506 515 #endif 516 #endif 517 518 /* 519 * Deal with all versions of POSIX. The ordering relative to the tests above is 520 * important. 521 */ 522 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) 523 #define _POSIX_C_SOURCE 198808 524 #endif 525 #ifdef _POSIX_C_SOURCE 526 #if (_POSIX_C_SOURCE - 0) >= 200809 527 #define __POSIX_VISIBLE 200809 528 #define __ISO_C_VISIBLE 1999 529 #elif (_POSIX_C_SOURCE - 0) >= 200112 530 #define __POSIX_VISIBLE 200112 531 #define __ISO_C_VISIBLE 1999 532 #elif (_POSIX_C_SOURCE - 0) >= 199506 533 #define __POSIX_VISIBLE 199506 534 #define __ISO_C_VISIBLE 1990 535 #elif (_POSIX_C_SOURCE - 0) >= 199309 536 #define __POSIX_VISIBLE 199309 537 #define __ISO_C_VISIBLE 1990 538 #elif (_POSIX_C_SOURCE - 0) >= 199209 539 #define __POSIX_VISIBLE 199209 540 #define __ISO_C_VISIBLE 1990 541 #elif (_POSIX_C_SOURCE - 0) >= 199009 542 #define __POSIX_VISIBLE 199009 543 #define __ISO_C_VISIBLE 1990 544 #else 545 #define __POSIX_VISIBLE 198808 546 #define __ISO_C_VISIBLE 0 547 #endif /* _POSIX_C_SOURCE */ 548 #else 549 /*- 550 * Deal with _ANSI_SOURCE: 551 * If it is defined, and no other compilation environment is explicitly 552 * requested, then define our internal feature-test macros to zero. This 553 * makes no difference to the preprocessor (undefined symbols in preprocessing 554 * expressions are defined to have value zero), but makes it more convenient for 555 * a test program to print out the values. 556 * 557 * If a program mistakenly defines _ANSI_SOURCE and some other macro such as 558 * _POSIX_C_SOURCE, we will assume that it wants the broader compilation 559 * environment (and in fact we will never get here). 560 */ 561 #ifdef _ANSI_SOURCE /* Hide almost everything. */ 562 #define __POSIX_VISIBLE 0 563 #define __XSI_VISIBLE 0 564 #define __BSD_VISIBLE 0 565 #define __ISO_C_VISIBLE 1990 566 #elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ 567 #define __POSIX_VISIBLE 0 568 #define __XSI_VISIBLE 0 569 #define __BSD_VISIBLE 0 570 #define __ISO_C_VISIBLE 1999 571 #else /* Default environment: show everything. */ 572 #define __POSIX_VISIBLE 200112 573 #define __XSI_VISIBLE 600 574 #define __BSD_VISIBLE 1 575 #define __ISO_C_VISIBLE 1999 576 #endif 577 #endif 578 579 /* 580 * GLOBL macro exists to preserve __start_set_* and __stop_set_* sections 581 * of kernel modules which are discarded from binutils 2.17.50+ otherwise. 582 */ 583 584 #define __GLOBL1(sym) __asm__(".globl " #sym) 585 #define __GLOBL(sym) __GLOBL1(sym) 586 587 #endif /* !_SYS_CDEFS_H_ */ 588