boehm-gc/gcconfig.h

   1 /*
   2  * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
   3  * Copyright (c) 1991-1994 by Xerox Corporation.  All rights reserved.
   4  * Copyright (c) 1996 by Silicon Graphics.  All rights reserved.
   5  *
   6  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
   7  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
   8  *
   9  * Permission is hereby granted to use or copy this program
  10  * for any purpose,  provided the above notices are retained on all copies.
  11  * Permission to modify the code and to distribute modified code is granted,
  12  * provided the above notices are retained, and a notice that the code was
  13  * modified is included with the above copyright notice.
  14  */
  15
  16 #ifndef GCCONFIG_H
  17
  18 # define GCCONFIG_H
  19
  20 /* Machine dependent parameters.  Some tuning parameters can be found   */
  21 /* near the top of gc_private.h.                                        */
  22
  23 /* Machine specific parts contributed by various people.  See README file. */
  24
  25 /* First a unified test for Linux: */
  26 # if defined(linux) || defined(__linux__)
  27 #    define LINUX
  28 # endif
  29
  30 /* Determine the machine type: */
  31 # if defined(sun) && defined(mc68000)
  32 #    define M68K
  33 #    define SUNOS4
  34 #    define mach_type_known
  35 # endif
  36 # if defined(hp9000s300)
  37 #    define M68K
  38 #    define HP
  39 #    define mach_type_known
  40 # endif
  41 # if defined(__OpenBSD__) && defined(m68k)
  42 #    define M68K
  43 #    define OPENBSD
  44 #    define mach_type_known
  45 # endif
  46 # if defined(__OpenBSD__) && defined(__sparc__)
  47 #    define SPARC
  48 #    define OPENBSD
  49 #    define mach_type_known
  50 # endif
  51 # if defined(__NetBSD__) && defined(m68k)
  52 #    define M68K
  53 #    define NETBSD
  54 #    define mach_type_known
  55 # endif
  56 # if defined(__NetBSD__) && defined(arm32)
  57 #    define ARM32
  58 #    define NETBSD
  59 #    define mach_type_known
  60 # endif
  61 # if defined(vax)
  62 #    define VAX
  63 #    ifdef ultrix
  64 #       define ULTRIX
  65 #    else
  66 #       define BSD
  67 #    endif
  68 #    define mach_type_known
  69 # endif
  70 # if defined(mips) || defined(__mips)
  71 #    define MIPS
  72 #    if defined(ultrix) || defined(__ultrix) || defined(__NetBSD__)
  73 #       define ULTRIX
  74 #    else
  75 #       if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) || defined(__SYSTYPE_SVR4__)
  76 #         define IRIX5   /* or IRIX 6.X */
  77 #       else
  78 #         define RISCOS  /* or IRIX 4.X */
  79 #       endif
  80 #    endif
  81 #    define mach_type_known
  82 # endif
  83 # if defined(sequent) && defined(i386)
  84 #    define I386
  85 #    define SEQUENT
  86 #    define mach_type_known
  87 # endif
  88 # if defined(sun) && defined(i386)
  89 #    define I386
  90 #    define SUNOS5
  91 #    define mach_type_known
  92 # endif
  93 # if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__)
  94 #    define I386
  95 #    define OS2
  96 #    define mach_type_known
  97 # endif
  98 # if defined(ibm032)
  99 #   define RT
 100 #   define mach_type_known
 101 # endif
 102 # if defined(sun) && (defined(sparc) || defined(__sparc))
 103 #   define SPARC
 104     /* Test for SunOS 5.x */
 105 #     include <errno.h>
 106 #     ifdef ECHRNG
 107 #       define SUNOS5
 108 #     else
 109 #       define SUNOS4
 110 #     endif
 111 #   define mach_type_known
 112 # endif
 113 # if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \
 114      && !defined(__OpenBSD__)
 115 #   define SPARC
 116 #   define DRSNX
 117 #   define mach_type_known
 118 # endif
 119 # if defined(_IBMR2)
 120 #   define RS6000
 121 #   define mach_type_known
 122 # endif
 123 # if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386)
 124         /* The above test may need refinement   */
 125 #   define I386
 126 #   if defined(_SCO_ELF)
 127 #     define SCO_ELF
 128 #   else
 129 #     define SCO
 130 #   endif
 131 #   define mach_type_known
 132 # endif
 133 # if defined(_AUX_SOURCE)
 134 #   define M68K
 135 #   define SYSV
 136 #   define mach_type_known
 137 # endif
 138 # if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \
 139      || defined(hppa) || defined(__hppa__)
 140 #   define HP_PA
 141 #   ifndef LINUX
 142 #     define HPUX
 143 #   endif
 144 #   define mach_type_known
 145 # endif
 146 # if defined(LINUX) && (defined(i386) || defined(__i386__))
 147 #    define I386
 148 #    define mach_type_known
 149 # endif
 150 # if defined(LINUX) && (defined(__ia64__) || defined(__ia64))
 151 #    define IA64
 152 #    define mach_type_known
 153 # endif
 154 # if defined(LINUX) && defined(powerpc)
 155 #    define POWERPC
 156 #    define mach_type_known
 157 # endif
 158 # if defined(LINUX) && defined(__mc68000__)
 159 #    define M68K
 160 #    define mach_type_known
 161 # endif
 162 # if defined(LINUX) && defined(sparc)
 163 #    define SPARC
 164 #    define mach_type_known
 165 # endif
 166 # if defined(__alpha) || defined(__alpha__)
 167 #   define ALPHA
 168 #   if !defined(LINUX)
 169 #     define OSF1       /* a.k.a Digital Unix */
 170 #   endif
 171 #   define mach_type_known
 172 # endif
 173 # if defined(_AMIGA) && !defined(AMIGA)
 174 #   define AMIGA
 175 # endif
 176 # ifdef AMIGA
 177 #   define M68K
 178 #   define mach_type_known
 179 # endif
 180 # if defined(THINK_C) || defined(__MWERKS__) && !defined(__powerc)
 181 #   define M68K
 182 #   define MACOS
 183 #   define mach_type_known
 184 # endif
 185 # if defined(__MWERKS__) && defined(__powerc)
 186 #   define POWERPC
 187 #   define MACOS
 188 #   define mach_type_known
 189 # endif
 190 # if defined(macosx)
 191 #    define MACOSX
 192 #    define POWERPC
 193 #    define mach_type_known
 194 # endif
 195 # if defined(NeXT) && defined(mc68000)
 196 #   define M68K
 197 #   define NEXT
 198 #   define mach_type_known
 199 # endif
 200 # if defined(NeXT) && defined(i386)
 201 #   define I386
 202 #   define NEXT
 203 #   define mach_type_known
 204 # endif
 205 # if defined(__OpenBSD__) && defined(i386)
 206 #   define I386
 207 #   define OPENBSD
 208 #   define mach_type_known
 209 # endif
 210 # if defined(__FreeBSD__) && defined(i386)
 211 #   define I386
 212 #   define FREEBSD
 213 #   define mach_type_known
 214 # endif
 215 # if defined(__NetBSD__) && defined(i386)
 216 #   define I386
 217 #   define NETBSD
 218 #   define mach_type_known
 219 # endif
 220 # if defined(bsdi) && defined(i386)
 221 #    define I386
 222 #    define BSDI
 223 #    define mach_type_known
 224 # endif
 225 # if !defined(mach_type_known) && defined(__386BSD__)
 226 #   define I386
 227 #   define THREE86BSD
 228 #   define mach_type_known
 229 # endif
 230 # if defined(_CX_UX) && defined(_M88K)
 231 #   define M88K
 232 #   define CX_UX
 233 #   define mach_type_known
 234 # endif
 235 # if defined(DGUX)
 236 #   define M88K
 237     /* DGUX defined */
 238 #   define mach_type_known
 239 # endif
 240 # if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \
 241      || defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__)
 242 #   define I386
 243 #   define MSWIN32      /* or Win32s */
 244 #   define mach_type_known
 245 # endif
 246 # if defined(__DJGPP__)
 247 #   define I386
 248 #   ifndef DJGPP
 249 #     define DJGPP  /* MSDOS running the DJGPP port of GCC */
 250 #   endif
 251 #   define mach_type_known
 252 # endif
 253 # if defined(__CYGWIN32__) || defined(__CYGWIN__)
 254 #   define I386
 255 #   define CYGWIN32
 256 #   define mach_type_known
 257 # endif
 258 # if defined(__BORLANDC__)
 259 #   define I386
 260 #   define MSWIN32
 261 #   define mach_type_known
 262 # endif
 263 # if defined(_UTS) && !defined(mach_type_known)
 264 #   define S370
 265 #   define UTS4
 266 #   define mach_type_known
 267 # endif
 268 # if defined(__pj__)
 269 #   define PJ
 270 #   define mach_type_known
 271 # endif
 272 /* Ivan Demakov */
 273 # if defined(__WATCOMC__) && defined(__386__)
 274 #   define I386
 275 #   if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW)
 276 #     if defined(__OS2__)
 277 #       define OS2
 278 #     else
 279 #       if defined(__WINDOWS_386__) || defined(__NT__)
 280 #         define MSWIN32
 281 #       else
 282 #         define DOS4GW
 283 #       endif
 284 #     endif
 285 #   endif
 286 #   define mach_type_known
 287 # endif
 288
 289 /* Feel free to add more clauses here */
 290
 291 /* Or manually define the machine type here.  A machine type is         */
 292 /* characterized by the architecture.  Some                             */
 293 /* machine types are further subdivided by OS.                          */
 294 /* the macros ULTRIX, RISCOS, and BSD to distinguish.                   */
 295 /* Note that SGI IRIX is treated identically to RISCOS.                 */
 296 /* SYSV on an M68K actually means A/UX.                                 */
 297 /* The distinction in these cases is usually the stack starting address */
 298 # ifndef mach_type_known
 299         --> unknown machine type
 300 # endif
 301                     /* Mapping is: M68K       ==> Motorola 680X0        */
 302                     /*             (SUNOS4,HP,NEXT, and SYSV (A/UX),    */
 303                     /*             MACOS and AMIGA variants)            */
 304                     /*             I386       ==> Intel 386             */
 305                     /*              (SEQUENT, OS2, SCO, LINUX, NETBSD,  */
 306                     /*               FREEBSD, THREE86BSD, MSWIN32,      */
 307                     /*               BSDI,SUNOS5, NEXT, other variants) */
 308                     /*             NS32K      ==> Encore Multimax       */
 309                     /*             MIPS       ==> R2000 or R3000        */
 310                     /*                  (RISCOS, ULTRIX variants)       */
 311                     /*             VAX        ==> DEC VAX               */
 312                     /*                  (BSD, ULTRIX variants)          */
 313                     /*             RS6000     ==> IBM RS/6000 AIX3.X    */
 314                     /*             RT         ==> IBM PC/RT             */
 315                     /*             HP_PA      ==> HP9000/700 & /800     */
 316                     /*                            HP/UX                 */
 317                     /*             SPARC      ==> SPARC under SunOS     */
 318                     /*                  (SUNOS4, SUNOS5,                */
 319                     /*                   DRSNX variants)                */
 320                     /*             ALPHA      ==> DEC Alpha             */
 321                     /*                  (OSF1 and LINUX variants)       */
 322                     /*             M88K       ==> Motorola 88XX0        */
 323                     /*                  (CX_UX and DGUX)                */
 324                     /*             S370       ==> 370-like machine      */
 325                     /*                  running Amdahl UTS4             */
 326
 327
 328 /*
 329  * For each architecture and OS, the following need to be defined:
 330  *
 331  * CPP_WORD_SZ is a simple integer constant representing the word size.
 332  * in bits.  We assume byte addressibility, where a byte has 8 bits.
 333  * We also assume CPP_WORD_SZ is either 32 or 64.
 334  * (We care about the length of pointers, not hardware
 335  * bus widths.  Thus a 64 bit processor with a C compiler that uses
 336  * 32 bit pointers should use CPP_WORD_SZ of 32, not 64. Default is 32.)
 337  *
 338  * MACH_TYPE is a string representation of the machine type.
 339  * OS_TYPE is analogous for the OS.
 340  *
 341  * ALIGNMENT is the largest N, such that
 342  * all pointer are guaranteed to be aligned on N byte boundaries.
 343  * defining it to be 1 will always work, but perform poorly.
 344  *
 345  * DATASTART is the beginning of the data segment.
 346  * On UNIX systems, the collector will scan the area between DATASTART
 347  * and DATAEND for root pointers.
 348  *
 349  * DATAEND, if not &end.
 350  *
 351  * ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice
 352  * the pointer size.
 353  *
 354  * STACKBOTTOM is the cool end of the stack, which is usually the
 355  * highest address in the stack.
 356  * Under PCR or OS/2, we have other ways of finding thread stacks.
 357  * For each machine, the following should:
 358  * 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and
 359  * 2) define exactly one of
 360  *      STACKBOTTOM (should be defined to be an expression)
 361  *      HEURISTIC1
 362  *      HEURISTIC2
 363  * If either of the last two macros are defined, then STACKBOTTOM is computed
 364  * during collector startup using one of the following two heuristics:
 365  * HEURISTIC1:  Take an address inside GC_init's frame, and round it up to
 366  *              the next multiple of STACK_GRAN.
 367  * HEURISTIC2:  Take an address inside GC_init's frame, increment it repeatedly
 368  *              in small steps (decrement if STACK_GROWS_UP), and read the value
 369  *              at each location.  Remember the value when the first
 370  *              Segmentation violation or Bus error is signalled.  Round that
 371  *              to the nearest plausible page boundary, and use that instead
 372  *              of STACKBOTTOM.
 373  *
 374  * If no expression for STACKBOTTOM can be found, and neither of the above
 375  * heuristics are usable, the collector can still be used with all of the above
 376  * undefined, provided one of the following is done:
 377  * 1) GC_mark_roots can be changed to somehow mark from the correct stack(s)
 378  *    without reference to STACKBOTTOM.  This is appropriate for use in
 379  *    conjunction with thread packages, since there will be multiple stacks.
 380  *    (Allocating thread stacks in the heap, and treating them as ordinary
 381  *    heap data objects is also possible as a last resort.  However, this is
 382  *    likely to introduce significant amounts of excess storage retention
 383  *    unless the dead parts of the thread stacks are periodically cleared.)
 384  * 2) Client code may set GC_stackbottom before calling any GC_ routines.
 385  *    If the author of the client code controls the main program, this is
 386  *    easily accomplished by introducing a new main program, setting
 387  *    GC_stackbottom to the address of a local variable, and then calling
 388  *    the original main program.  The new main program would read something
 389  *    like:
 390  *
 391  *              # include "gc_private.h"
 392  *
 393  *              main(argc, argv, envp)
 394  *              int argc;
 395  *              char **argv, **envp;
 396  *              {
 397  *                  int dummy;
 398  *
 399  *                  GC_stackbottom = (ptr_t)(&dummy);
 400  *                  return(real_main(argc, argv, envp));
 401  *              }
 402  *
 403  *
 404  * Each architecture may also define the style of virtual dirty bit
 405  * implementation to be used:
 406  *   MPROTECT_VDB: Write protect the heap and catch faults.
 407  *   PROC_VDB: Use the SVR4 /proc primitives to read dirty bits.
 408  *
 409  * An architecture may define DYNAMIC_LOADING if dynamic_load.c
 410  * defined GC_register_dynamic_libraries() for the architecture.
 411  */
 412
 413
 414 # define STACK_GRAN 0x1000000
 415 # ifdef M68K
 416 #   define MACH_TYPE "M68K"
 417 #   define ALIGNMENT 2
 418 #   ifdef OPENBSD
 419 #       define OS_TYPE "OPENBSD"
 420 #       define HEURISTIC2
 421         extern char etext;
 422 #       define DATASTART ((ptr_t)(&etext))
 423 #   endif
 424 #   ifdef NETBSD
 425 #       define OS_TYPE "NETBSD"
 426 #       define HEURISTIC2
 427         extern char etext;
 428 #       define DATASTART ((ptr_t)(&etext))
 429 #   endif
 430 #   ifdef LINUX
 431 #       define OS_TYPE "LINUX"
 432 #       define STACKBOTTOM ((ptr_t)0xf0000000)
 433 #       define MPROTECT_VDB
 434 #       ifdef __ELF__
 435 #            define DYNAMIC_LOADING
 436              extern char **__environ;
 437 #            define DATASTART ((ptr_t)(&__environ))
 438                              /* hideous kludge: __environ is the first */
 439                              /* word in crt0.o, and delimits the start */
 440                              /* of the data segment, no matter which   */
 441                              /* ld options were passed through.        */
 442                              /* We could use _etext instead, but that  */
 443                              /* would include .rodata, which may       */
 444                              /* contain large read-only data tables    */
 445                              /* that we'd rather not scan.             */
 446              extern int _end;
 447 #            define DATAEND (&_end)
 448 #       else
 449              extern int etext;
 450 #            define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
 451 #       endif
 452 #   endif
 453 #   ifdef SUNOS4
 454 #       define OS_TYPE "SUNOS4"
 455         extern char etext;
 456 #       define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ffff) & ~0x1ffff))
 457 #       define HEURISTIC1       /* differs      */
 458 #       define DYNAMIC_LOADING
 459 #   endif
 460 #   ifdef HP
 461 #       define OS_TYPE "HP"
 462         extern char etext;
 463 #       define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
 464 #       define STACKBOTTOM ((ptr_t) 0xffeffffc)
 465                               /* empirically determined.  seems to work. */
 466 #       include <unistd.h>
 467 #       define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
 468 #   endif
 469 #   ifdef SYSV
 470 #       define OS_TYPE "SYSV"
 471         extern etext;
 472 #       define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \
 473                                    & ~0x3fffff) \
 474                                   +((word)&etext & 0x1fff))
 475         /* This only works for shared-text binaries with magic number 0413.
 476            The other sorts of SysV binaries put the data at the end of the text,
 477            in which case the default of &etext would work.  Unfortunately,
 478            handling both would require having the magic-number available.
 479                                 -- Parag
 480            */
 481 #       define STACKBOTTOM ((ptr_t)0xFFFFFFFE)
 482                         /* The stack starts at the top of memory, but   */
 483                         /* 0x0 cannot be used as setjump_test complains */
 484                         /* that the stack direction is incorrect.  Two  */
 485                         /* bytes down from 0x0 should be safe enough.   */
 486                         /*              --Parag                         */
 487 #       include <sys/mmu.h>
 488 #       define GETPAGESIZE() PAGESIZE   /* Is this still right? */
 489 #   endif
 490 #   ifdef AMIGA
 491 #       define OS_TYPE "AMIGA"
 492                 /* STACKBOTTOM and DATASTART handled specially  */
 493                 /* in os_dep.c                                  */
 494 #       define DATAEND  /* not needed */
 495 #       define GETPAGESIZE() 4096
 496 #   endif
 497 #   ifdef MACOS
 498 #     ifndef __LOWMEM__
 499 #     include <LowMem.h>
 500 #     endif
 501 #     define OS_TYPE "MACOS"
 502                         /* see os_dep.c for details of global data segments. */
 503 #     define STACKBOTTOM ((ptr_t) LMGetCurStackBase())
 504 #     define DATAEND    /* not needed */
 505 #     define GETPAGESIZE() 4096
 506 #   endif
 507 #   ifdef NEXT
 508 #       define OS_TYPE "NEXT"
 509 #       define DATASTART ((ptr_t) get_etext())
 510 #       define STACKBOTTOM ((ptr_t) 0x4000000)
 511 #       define DATAEND  /* not needed */
 512 #   endif
 513 # endif
 514
 515 # ifdef POWERPC
 516 #   define MACH_TYPE "POWERPC"
 517 #   ifdef MACOS
 518 #     define ALIGNMENT 2  /* Still necessary?  Could it be 4?   */
 519 #     ifndef __LOWMEM__
 520 #     include <LowMem.h>
 521 #     endif
 522 #     define OS_TYPE "MACOS"
 523                         /* see os_dep.c for details of global data segments. */
 524 #     define STACKBOTTOM ((ptr_t) LMGetCurStackBase())
 525 #     define DATAEND  /* not needed */
 526 #   endif
 527 #   ifdef LINUX
 528 #     define ALIGNMENT 4        /* Guess.  Can someone verify?  */
 529                                 /* This was 2, but that didn't sound right. */
 530 #     define OS_TYPE "LINUX"
 531 #     define HEURISTIC1
 532 #     undef STACK_GRAN
 533 #     define STACK_GRAN 0x10000000
 534         /* Stack usually starts at 0x80000000 */
 535       extern int data_start;
 536 #     define DATASTART (&data_start)
 537       extern int _end;
 538 #     define DATAEND (&_end)
 539 #     define DYNAMIC_LOADING
 540 #   endif
 541 #   ifdef MACOSX
 542 #     define ALIGNMENT 4
 543 #     define OS_TYPE "MACOSX"
 544 #     define DATASTART ((ptr_t) get_etext())
 545 #     define STACKBOTTOM ((ptr_t) 0xc0000000)
 546 #     define DATAEND    /* not needed */
 547 #   endif
 548 # endif
 549
 550 # ifdef VAX
 551 #   define MACH_TYPE "VAX"
 552 #   define ALIGNMENT 4  /* Pointers are longword aligned by 4.2 C compiler */
 553     extern char etext;
 554 #   define DATASTART ((ptr_t)(&etext))
 555 #   ifdef BSD
 556 #       define OS_TYPE "BSD"
 557 #       define HEURISTIC1
 558                         /* HEURISTIC2 may be OK, but it's hard to test. */
 559 #   endif
 560 #   ifdef ULTRIX
 561 #       define OS_TYPE "ULTRIX"
 562 #       define STACKBOTTOM ((ptr_t) 0x7fffc800)
 563 #   endif
 564 # endif
 565
 566 # ifdef RT
 567 #   define MACH_TYPE "RT"
 568 #   define ALIGNMENT 4
 569 #   define DATASTART ((ptr_t) 0x10000000)
 570 #   define STACKBOTTOM ((ptr_t) 0x1fffd800)
 571 # endif
 572
 573 # ifdef SPARC
 574 #   define MACH_TYPE "SPARC"
 575 #   define ALIGNMENT 4  /* Required by hardware */
 576 #   define ALIGN_DOUBLE
 577     extern int etext;
 578 #   ifdef SUNOS5
 579 #       define OS_TYPE "SUNOS5"
 580         extern int _etext;
 581         extern int _end;
 582         extern char * GC_SysVGetDataStart();
 583 #       define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
 584 #       define DATAEND (&_end)
 585 #       ifndef USE_MMAP
 586 #           define USE_MMAP
 587 #       endif
 588 #       ifdef USE_MMAP
 589 #         define HEAP_START (ptr_t)0x40000000
 590 #       else
 591 #         define HEAP_START DATAEND
 592 #       endif
 593 #       define PROC_VDB
 594 /*      HEURISTIC1 reportedly no longer works under 2.7.  Thus we       */
 595 /*      switched to HEURISTIC2, eventhough it creates some debugging    */
 596 /*      issues.                                                         */
 597 #       define HEURISTIC2
 598 #       include <unistd.h>
 599 #       define GETPAGESIZE()  sysconf(_SC_PAGESIZE)
 600                 /* getpagesize() appeared to be missing from at least one */
 601                 /* Solaris 5.4 installation.  Weird.                      */
 602 #       define DYNAMIC_LOADING
 603 #   endif
 604 #   ifdef SUNOS4
 605 #       define OS_TYPE "SUNOS4"
 606         /* [If you have a weak stomach, don't read this.]               */
 607         /* We would like to use:                                        */
 608 /* #       define DATASTART ((ptr_t)((((word) (&etext)) + 0x1fff) & ~0x1fff)) */
 609         /* This fails occasionally, due to an ancient, but very         */
 610         /* persistent ld bug.  &etext is set 32 bytes too high.         */
 611         /* We instead read the text segment size from the a.out         */
 612         /* header, which happens to be mapped into our address space    */
 613         /* at the start of the text segment.  The detective work here   */
 614         /* was done by Robert Ehrlich, Manuel Serrano, and Bernard      */
 615         /* Serpette of INRIA.                                           */
 616         /* This assumes ZMAGIC, i.e. demand-loadable executables.       */
 617 #       define TEXTSTART 0x2000
 618 #       define DATASTART ((ptr_t)(*(int *)(TEXTSTART+0x4)+TEXTSTART))
 619 #       define MPROTECT_VDB
 620 #       define HEURISTIC1
 621 #       define DYNAMIC_LOADING
 622 #   endif
 623 #   ifdef DRSNX
 624 #       define CPP_WORDSZ 32
 625 #       define OS_TYPE "DRSNX"
 626         extern char * GC_SysVGetDataStart();
 627         extern int etext;
 628 #       define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext)
 629 #       define MPROTECT_VDB
 630 #       define STACKBOTTOM ((ptr_t) 0xdfff0000)
 631 #       define DYNAMIC_LOADING
 632 #   endif
 633 #   ifdef LINUX
 634 #     define OS_TYPE "LINUX"
 635 #     ifdef __ELF__
 636 #         define DATASTART GC_data_start
 637 #         define DYNAMIC_LOADING
 638 #     else
 639           Linux Sparc non elf ?
 640 #     endif
 641       extern int _end;
 642 #     define DATAEND (&_end)
 643 #     define SVR4
 644 #     define STACKBOTTOM ((ptr_t) 0xf0000000)
 645 #   endif
 646 #   ifdef OPENBSD
 647 #     define OS_TYPE "OPENBSD"
 648 #     define STACKBOTTOM ((ptr_t) 0xf8000000)
 649 #     define DATASTART ((ptr_t)(&etext))
 650 #   endif
 651 # endif
 652
 653 # ifdef I386
 654 #   define MACH_TYPE "I386"
 655 #   define ALIGNMENT 4  /* Appears to hold for all "32 bit" compilers   */
 656                         /* except Borland.  The -a4 option fixes        */
 657                         /* Borland.                                     */
 658                         /* Ivan Demakov: For Watcom the option is -zp4. */
 659 #   ifndef SMALL_CONFIG
 660 #     define ALIGN_DOUBLE /* Not strictly necessary, but may give speed   */
 661                           /* improvement on Pentiums.                     */
 662 #   endif
 663 #   ifdef SEQUENT
 664 #       define OS_TYPE "SEQUENT"
 665         extern int etext;
 666 #       define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
 667 #       define STACKBOTTOM ((ptr_t) 0x3ffff000)
 668 #   endif
 669 #   ifdef SUNOS5
 670 #       define OS_TYPE "SUNOS5"
 671         extern int etext, _start;
 672         extern char * GC_SysVGetDataStart();
 673 #       define DATASTART GC_SysVGetDataStart(0x1000, &etext)
 674 #       define STACKBOTTOM ((ptr_t)(&_start))
 675 /** At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */
 676 /*#     define PROC_VDB*/
 677 #       define DYNAMIC_LOADING
 678 #       ifndef USE_MMAP
 679 #           define USE_MMAP
 680 #       endif
 681 #       ifdef USE_MMAP
 682 #         define HEAP_START (ptr_t)0x40000000
 683 #       else
 684 #         define HEAP_START DATAEND
 685 #       endif
 686 #   endif
 687 #   ifdef SCO
 688 #       define OS_TYPE "SCO"
 689         extern int etext;
 690 #       define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \
 691                                   & ~0x3fffff) \
 692                                  +((word)&etext & 0xfff))
 693 #       define STACKBOTTOM ((ptr_t) 0x7ffffffc)
 694 #   endif
 695 #   ifdef SCO_ELF
 696 #       define OS_TYPE "SCO_ELF"
 697         extern int etext;
 698 #       define DATASTART ((ptr_t)(&etext))
 699 #       define STACKBOTTOM ((ptr_t) 0x08048000)
 700 #       define DYNAMIC_LOADING
 701 #       define ELF_CLASS ELFCLASS32
 702 #   endif
 703 #   ifdef LINUX
 704 #       define OS_TYPE "LINUX"
 705 #       define HEURISTIC1
 706 #       undef STACK_GRAN
 707 #       define STACK_GRAN 0x10000000
 708         /* STACKBOTTOM is usually 0xc0000000, but this changes with     */
 709         /* different kernel configurations.  In particular, systems     */
 710         /* with 2GB physical memory will usually move the user          */
 711         /* address space limit, and hence initial SP to 0x80000000.     */
 712 #       if !defined(LINUX_THREADS) || !defined(REDIRECT_MALLOC)
 713         /* libgcj: Linux threads don't interact well with the read() wrapper.
 714            Not defining MPROTECT_VDB fixes this.  */
 715 /* #        define MPROTECT_VDB */
 716 #       else
 717             /* We seem to get random errors in incremental mode,        */
 718             /* possibly because Linux threads is itself a malloc client */
 719             /* and can't deal with the signals.                         */
 720 #       endif
 721 #       ifdef __ELF__
 722 #            define DYNAMIC_LOADING
 723 #            ifdef UNDEFINED    /* includes ro data */
 724                extern int _etext;
 725 #              define DATASTART ((ptr_t)((((word) (&_etext)) + 0xfff) & ~0xfff))
 726 #            endif
 727 #            include <features.h>
 728 #            if defined(__GLIBC__) && __GLIBC__ >= 2
 729                  extern int __data_start;
 730 #                define DATASTART ((ptr_t)(&__data_start))
 731 #            else
 732                  extern char **__environ;
 733 #                define DATASTART ((ptr_t)(&__environ))
 734                               /* hideous kludge: __environ is the first */
 735                               /* word in crt0.o, and delimits the start */
 736                               /* of the data segment, no matter which   */
 737                               /* ld options were passed through.        */
 738                               /* We could use _etext instead, but that  */
 739                               /* would include .rodata, which may       */
 740                               /* contain large read-only data tables    */
 741                               /* that we'd rather not scan.             */
 742 #            endif
 743              extern int _end;
 744 #            define DATAEND (&_end)
 745 #       else
 746              extern int etext;
 747 #            define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
 748 #       endif
 749 #   endif
 750 #   ifdef CYGWIN32
 751 #       define OS_TYPE "CYGWIN32"
 752           extern int _data_start__;
 753           extern int _data_end__;
 754           extern int _bss_start__;
 755           extern int _bss_end__;
 756         /* For binutils 2.9.1, we have                  */
 757         /*      DATASTART   = _data_start__             */
 758         /*      DATAEND     = _bss_end__                */
 759         /* whereas for some earlier versions it was     */
 760         /*      DATASTART   = _bss_start__              */
 761         /*      DATAEND     = _data_end__               */
 762         /* To get it right for both, we take the        */
 763         /* minumum/maximum of the two.                  */
 764 #       define MAX(x,y) ((x) > (y) ? (x) : (y))
 765 #       define MIN(x,y) ((x) < (y) ? (x) : (y))
 766 #       define DATASTART ((ptr_t) MIN(&_data_start__, &_bss_start__))
 767 #       define DATAEND   ((ptr_t) MAX(&_data_end__, &_bss_end__))
 768 #       undef STACK_GRAN
 769 #       define STACK_GRAN 0x10000
 770 #       define HEURISTIC1
 771 #   endif
 772 #   ifdef OS2
 773 #       define OS_TYPE "OS2"
 774                 /* STACKBOTTOM and DATASTART are handled specially in   */
 775                 /* os_dep.c. OS2 actually has the right                 */
 776                 /* system call!                                         */
 777 #       define DATAEND  /* not needed */
 778 #   endif
 779 #   ifdef MSWIN32
 780 #       define OS_TYPE "MSWIN32"
 781                 /* STACKBOTTOM and DATASTART are handled specially in   */
 782                 /* os_dep.c.                                            */
 783 #       ifndef __WATCOMC__
 784 #         define MPROTECT_VDB
 785 #       endif
 786 #       define DATAEND  /* not needed */
 787 #   endif
 788 #   ifdef DJGPP
 789 #       define OS_TYPE "DJGPP"
 790 #       include "stubinfo.h"
 791         extern int etext;
 792         extern int _stklen;
 793         extern int __djgpp_stack_limit;
 794 #       define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ff) & ~0x1ff))
 795 /* #       define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \
 796                                                      + _stklen)) */
 797 #       define STACKBOTTOM ((ptr_t)((word) __djgpp_stack_limit + _stklen))
 798                 /* This may not be right.  */
 799 #   endif
 800 #   ifdef OPENBSD
 801 #       define OS_TYPE "OPENBSD"
 802 #   endif
 803 #   ifdef FREEBSD
 804 #       define OS_TYPE "FREEBSD"
 805 #       define MPROTECT_VDB
 806 #   endif
 807 #   ifdef NETBSD
 808 #       define OS_TYPE "NETBSD"
 809 #   endif
 810 #   ifdef THREE86BSD
 811 #       define OS_TYPE "THREE86BSD"
 812 #   endif
 813 #   ifdef BSDI
 814 #       define OS_TYPE "BSDI"
 815 #   endif
 816 #   if defined(OPENBSD) || defined(FREEBSD) || defined(NETBSD) \
 817         || defined(THREE86BSD) || defined(BSDI)
 818 #       define HEURISTIC2
 819         extern char etext;
 820 #       define DATASTART ((ptr_t)(&etext))
 821 #   endif
 822 #   ifdef NEXT
 823 #       define OS_TYPE "NEXT"
 824 #       define DATASTART ((ptr_t) get_etext())
 825 #       define STACKBOTTOM ((ptr_t)0xc0000000)
 826 #       define DATAEND  /* not needed */
 827 #   endif
 828 #   ifdef DOS4GW
 829 #     define OS_TYPE "DOS4GW"
 830       extern long __nullarea;
 831       extern char _end;
 832       extern char *_STACKTOP;
 833       /* Depending on calling conventions Watcom C either precedes
 834          or does not precedes with undescore names of C-variables.
 835          Make sure startup code variables always have the same names.  */
 836       #pragma aux __nullarea "*";
 837       #pragma aux _end "*";
 838 #     define STACKBOTTOM ((ptr_t) _STACKTOP)
 839                          /* confused? me too. */
 840 #     define DATASTART ((ptr_t) &__nullarea)
 841 #     define DATAEND ((ptr_t) &_end)
 842 #   endif
 843 # endif
 844
 845 # ifdef NS32K
 846 #   define MACH_TYPE "NS32K"
 847 #   define ALIGNMENT 4
 848     extern char **environ;
 849 #   define DATASTART ((ptr_t)(&environ))
 850                               /* hideous kludge: environ is the first   */
 851                               /* word in crt0.o, and delimits the start */
 852                               /* of the data segment, no matter which   */
 853                               /* ld options were passed through.        */
 854 #   define STACKBOTTOM ((ptr_t) 0xfffff000) /* for Encore */
 855 # endif
 856
 857 # ifdef MIPS
 858 # ifndef ECOS
 859 #   define MACH_TYPE "MIPS"
 860         /* LIBGCJ LOCAL: respect predefined DATASTART_IS_ETEXT.  */
 861 #   ifdef DATASTART_IS_ETEXT
 862         extern int _etext;
 863 #     define DATASTART ((ptr_t)(&_etext))
 864 #   else
 865 #     ifndef IRIX5
 866 #       define DATASTART (ptr_t)0x10000000
 867                               /* Could probably be slightly higher since */
 868                               /* startup code allocates lots of stuff.   */
 869 #     else
 870         extern int _fdata;
 871 #       define DATASTART ((ptr_t)(&_fdata))
 872 #       ifdef USE_MMAP
 873 #           define HEAP_START (ptr_t)0x30000000
 874 #       else
 875 #           define HEAP_START DATASTART
 876 #       endif
 877                               /* Lowest plausible heap address.         */
 878                               /* In the MMAP case, we map there.        */
 879                               /* In either case it is used to identify  */
 880                               /* heap sections so they're not           */
 881                               /* considered as roots.                   */
 882 #     endif /* IRIX5 */
 883 #   endif /* DATASTART_IS_ETEXT */
 884 #   define HEURISTIC2
 885 /* #   define STACKBOTTOM ((ptr_t)0x7fff8000)  sometimes also works.  */
 886 #   ifdef ULTRIX
 887 #       define OS_TYPE "ULTRIX"
 888 #       define ALIGNMENT 4
 889 #   endif
 890 #   ifdef RISCOS
 891 #       define OS_TYPE "RISCOS"
 892 #       define ALIGNMENT 4  /* Required by hardware */
 893 #   endif
 894 #   ifdef IRIX5
 895 #       define OS_TYPE "IRIX5"
 896 #       define MPROTECT_VDB
 897 #       ifdef _MIPS_SZPTR
 898 #         define CPP_WORDSZ _MIPS_SZPTR
 899 #         define ALIGNMENT (_MIPS_SZPTR/8)
 900 #         if CPP_WORDSZ != 64
 901 #           define ALIGN_DOUBLE
 902 #         endif
 903 #       else
 904 #         define ALIGNMENT 4
 905 #         define ALIGN_DOUBLE
 906 #       endif
 907 #       define DYNAMIC_LOADING
 908 #   endif
 909 #   endif /* ECOS */
 910 # ifdef ECOS
 911     extern char __ram_data_start;
 912     extern char __ram_data_end;
 913 #   define MACH_TYPE "MIPS"
 914 #   define DATASTART (ptr_t)(&__ram_data_start)
 915 #   define DATAEND (ptr_t)(&__ram_data_end)
 916
 917 #   define HEURISTIC2
 918 #   define ALIGNMENT 4
 919 #   define ALIGN_DOUBLE
 920 #   endif /* ECOS */
 921 # endif
 922
 923 # ifdef RS6000
 924 #   define MACH_TYPE "RS6000"
 925 #   define ALIGNMENT 4
 926 #   define DATASTART ((ptr_t)0x20000000)
 927     extern int errno;
 928 #   define STACKBOTTOM ((ptr_t)((ulong)&errno))
 929 #   define DYNAMIC_LOADING
 930         /* For really old versions of AIX, this may have to be removed. */
 931 # endif
 932
 933 # ifdef HP_PA
 934     /* OS is assumed to be HP/UX        */
 935 #   define MACH_TYPE "HP_PA"
 936 #   define OS_TYPE "HPUX"
 937 #   ifdef __LP64__
 938 #     define CPP_WORDSZ 64
 939 #     define ALIGNMENT 8
 940 #   else
 941 #     define CPP_WORDSZ 32
 942 #     define ALIGNMENT 4
 943 #     define ALIGN_DOUBLE
 944 #   endif
 945     extern int __data_start;
 946 #   define DATASTART ((ptr_t)(&__data_start))
 947 #   if 0
 948         /* The following appears to work for 7xx systems running HP/UX  */
 949         /* 9.xx Furthermore, it might result in much faster             */
 950         /* collections than HEURISTIC2, which may involve scanning      */
 951         /* segments that directly precede the stack.  It is not the     */
 952         /* default, since it may not work on older machine/OS           */
 953         /* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */
 954         /* this.)                                                       */
 955 #       define STACKBOTTOM ((ptr_t) 0x7b033000)  /* from /etc/conf/h/param.h */
 956 #   else
 957 #       define HEURISTIC2
 958 #   endif
 959 #   define STACK_GROWS_UP
 960 #   define DYNAMIC_LOADING
 961 #   ifndef HPUX_THREADS
 962 #     define MPROTECT_VDB
 963 #   endif
 964 #   include <unistd.h>
 965 #   define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
 966         /* They misspelled the Posix macro?     */
 967 # endif
 968
 969 # ifdef ALPHA
 970 #   define MACH_TYPE "ALPHA"
 971 #   define ALIGNMENT 8
 972 #   ifdef OSF1
 973 #       define OS_TYPE "OSF1"
 974 #       define DATASTART ((ptr_t) 0x140000000)
 975         extern _end;
 976 #       define DATAEND ((ptr_t) &_end)
 977 #       define HEURISTIC2
 978         /* Normally HEURISTIC2 is too conervative, since                */
 979         /* the text segment immediately follows the stack.              */
 980         /* Hence we give an upper pound.                                */
 981         extern int __start;
 982 #       define HEURISTIC2_LIMIT ((ptr_t)((word)(&__start) & ~(getpagesize()-1)))
 983 #       define CPP_WORDSZ 64
 984 #       define MPROTECT_VDB
 985 #       define DYNAMIC_LOADING
 986 #   endif
 987 #   ifdef LINUX
 988 #       define OS_TYPE "LINUX"
 989 #       define CPP_WORDSZ 64
 990 #       define STACKBOTTOM ((ptr_t) 0x120000000)
 991 #       ifdef __ELF__
 992             /* glibc for Linux/Alpha no longer provides a symbol marking
 993                the start of the data segment.  So libgcj defines
 994                data_start on its own (in libgcjdata.a).  */
 995             extern int data_start;
 996 #           define DATASTART &data_start
 997 #           define DYNAMIC_LOADING
 998 #       else
 999 #           define DATASTART ((ptr_t) 0x140000000)
1000 #       endif
1001         extern int _end;
1002 #       define DATAEND (&_end)
1003 #       undef MPROTECT_VDB
1004                 /* Has only been superficially tested.  May not */
1005                 /* work on all versions.                        */
1006 #   endif
1007 # endif
1008
1009 # ifdef IA64
1010 #   define MACH_TYPE "IA64"
1011 #   define ALIGN_DOUBLE
1012         /* Requires 16 byte alignment for malloc */
1013 #   define ALIGNMENT 8
1014 #   ifdef HPUX
1015         --> needs work
1016 #   endif
1017 #   ifdef LINUX
1018 #       define OS_TYPE "LINUX"
1019 #       define CPP_WORDSZ 64
1020         /* This should really be done through /proc, but that   */
1021         /* requires we run on an IA64 kernel.                   */
1022 #       define STACKBOTTOM ((ptr_t) 0xa000000000000000l)
1023         /* We also need the base address of the register stack  */
1024         /* backing store.  There is probably a better way to    */
1025         /* get that, too ...                                    */
1026 #       define BACKING_STORE_BASE ((ptr_t) 0x9fffffff80000000l)
1027 #       define DATASTART GC_data_start
1028 #       define DYNAMIC_LOADING
1029         extern int _end;
1030 #       define DATAEND (&_end)
1031 #   endif
1032 # endif
1033
1034 # ifdef M88K
1035 #   define MACH_TYPE "M88K"
1036 #   define ALIGNMENT 4
1037 #   define ALIGN_DOUBLE
1038     extern int etext;
1039 #   ifdef CX_UX
1040 #       define OS_TYPE "CX_UX"
1041 #       define DATASTART ((((word)&etext + 0x3fffff) & ~0x3fffff) + 0x10000)
1042 #   endif
1043 #   ifdef  DGUX
1044 #       define OS_TYPE "DGUX"
1045         extern char * GC_SysVGetDataStart();
1046 #       define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext)
1047 #   endif
1048 #   define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */
1049 # endif
1050
1051 # ifdef S370
1052 #   define MACH_TYPE "S370"
1053 #   define OS_TYPE "UTS4"
1054 #   define ALIGNMENT 4  /* Required by hardware */
1055     extern int etext;
1056         extern int _etext;
1057         extern int _end;
1058         extern char * GC_SysVGetDataStart();
1059 #       define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
1060 #       define DATAEND (&_end)
1061 #       define HEURISTIC2
1062 # endif
1063
1064 # if defined(PJ)
1065 #   define ALIGNMENT 4
1066     extern int _etext;
1067 #   define DATASTART ((ptr_t)(&_etext))
1068 #   define HEURISTIC1
1069 # endif
1070
1071 # ifdef ARM32
1072 #   define CPP_WORDSZ 32
1073 #   define MACH_TYPE "ARM32"
1074 #   define ALIGNMENT 4
1075 #   ifdef NETBSD
1076 #       define OS_TYPE "NETBSD"
1077 #       define HEURISTIC2
1078         extern char etext;
1079 #       define DATASTART ((ptr_t)(&etext))
1080 #       define USE_GENERIC_PUSH_REGS
1081 #   endif
1082 #endif
1083
1084 # ifndef STACK_GROWS_UP
1085 #   define STACK_GROWS_DOWN
1086 # endif
1087
1088 # ifndef CPP_WORDSZ
1089 #   define CPP_WORDSZ 32
1090 # endif
1091
1092 # ifndef OS_TYPE
1093 #   define OS_TYPE ""
1094 # endif
1095
1096 # ifndef DATAEND
1097     extern int end;
1098 #   define DATAEND (&end)
1099 # endif
1100
1101 # if defined(SVR4) && !defined(GETPAGESIZE)
1102 #    include <unistd.h>
1103 #    define GETPAGESIZE()  sysconf(_SC_PAGESIZE)
1104 # endif
1105
1106 # ifndef GETPAGESIZE
1107 #   if defined(SUNOS5) || defined(IRIX5)
1108 #       include <unistd.h>
1109 #   endif
1110 #   define GETPAGESIZE() getpagesize()
1111 # endif
1112
1113 # if defined(SUNOS5) || defined(DRSNX) || defined(UTS4)
1114     /* OS has SVR4 generic features.  Probably others also qualify.     */
1115 #   define SVR4
1116 # endif
1117
1118 # if defined(SUNOS5) || defined(DRSNX)
1119     /* OS has SUNOS5 style semi-undocumented interface to dynamic       */
1120     /* loader.                                                          */
1121 #   define SUNOS5DL
1122     /* OS has SUNOS5 style signal handlers.                             */
1123 #   define SUNOS5SIGS
1124 # endif
1125
1126 # if defined(HPUX)
1127 #   define SUNOS5SIGS
1128 # endif
1129
1130 # if CPP_WORDSZ != 32 && CPP_WORDSZ != 64
1131    -> bad word size
1132 # endif
1133
1134 # ifdef PCR
1135 #   undef DYNAMIC_LOADING
1136 #   undef STACKBOTTOM
1137 #   undef HEURISTIC1
1138 #   undef HEURISTIC2
1139 #   undef PROC_VDB
1140 #   undef MPROTECT_VDB
1141 #   define PCR_VDB
1142 # endif
1143
1144 # ifdef SRC_M3
1145 /* Postponed for now. */
1146 #   undef PROC_VDB
1147 #   undef MPROTECT_VDB
1148 # endif
1149
1150 # ifdef SMALL_CONFIG
1151 /* Presumably not worth the space it takes. */
1152 #   undef PROC_VDB
1153 #   undef MPROTECT_VDB
1154 # endif
1155
1156 # ifdef USE_MUNMAP
1157 #   undef MPROTECT_VDB  /* Can't deal with address space holes. */
1158 # endif
1159
1160 # if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB)
1161 #   define DEFAULT_VDB
1162 # endif
1163
1164 # if defined(_SOLARIS_PTHREADS) && !defined(SOLARIS_THREADS)
1165 #   define SOLARIS_THREADS
1166 # endif
1167 # if defined(IRIX_THREADS) && !defined(IRIX5)
1168 --> inconsistent configuration
1169 # endif
1170 # if defined(IRIX_JDK_THREADS) && !defined(IRIX5)
1171 --> inconsistent configuration
1172 # endif
1173 # if defined(LINUX_THREADS) && !defined(LINUX)
1174 --> inconsistent configuration
1175 # endif
1176 # if defined(SOLARIS_THREADS) && !defined(SUNOS5)
1177 --> inconsistent configuration
1178 # endif
1179 # if defined(HPUX_THREADS) && !defined(HPUX)
1180 --> inconsistent configuration
1181 # endif
1182 # if defined(PCR) || defined(SRC_M3) || \
1183         defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \
1184         defined(IRIX_THREADS) || defined(LINUX_THREADS) || \
1185         defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS)
1186 #   define THREADS
1187 # endif
1188
1189 # if defined(HP_PA) || defined(M88K) || defined(POWERPC) \
1190      || (defined(I386) && defined(OS2)) || defined(UTS4) || defined(LINT)
1191         /* Use setjmp based hack to mark from callee-save registers. */
1192 #       define USE_GENERIC_PUSH_REGS
1193 # endif
1194 # if defined(SPARC) && !defined(LINUX)
1195 #   define SAVE_CALL_CHAIN
1196 #   define ASM_CLEAR_CODE       /* Stack clearing is crucial, and we    */
1197                                 /* include assembly code to do it well. */
1198 # endif
1199
1200 # endif