git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 70f72767 TT |
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. | |
| abdbd4a8 | 5 | * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. |
| 70f72767 TT |
6 | * |
| 7 | * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED | |
| 8 | * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. | |
| 9 | * | |
| 10 | * Permission is hereby granted to use or copy this program | |
| 11 | * for any purpose, provided the above notices are retained on all copies. | |
| 12 | * Permission to modify the code and to distribute modified code is granted, | |
| 13 | * provided the above notices are retained, and a notice that the code was | |
| 14 | * modified is included with the above copyright notice. | |
| 15 | */ | |
| 16 | ||
| 56293c2b | 17 | #ifndef GCCONFIG_H |
| 70f72767 | 18 | |
| 56293c2b | 19 | # define GCCONFIG_H |
| 70f72767 TT |
20 | |
| 21 | /* Machine dependent parameters. Some tuning parameters can be found */ | |
| 22 | /* near the top of gc_private.h. */ | |
| 23 | ||
| 24 | /* Machine specific parts contributed by various people. See README file. */ | |
| 25 | ||
| 26 | /* First a unified test for Linux: */ | |
| 27 | # if defined(linux) || defined(__linux__) | |
| 28 | # define LINUX | |
| 29 | # endif | |
| 30 | ||
| abdbd4a8 BM |
31 | /* And one for NetBSD: */ |
| 32 | # if defined(__NetBSD__) | |
| 33 | # define NETBSD | |
| 34 | # endif | |
| 35 | ||
| 4c7726b1 BM |
36 | /* And one for OpenBSD: */ |
| 37 | # if defined(__OpenBSD__) | |
| 38 | # define OPENBSD | |
| 39 | # endif | |
| 40 | ||
| c0561434 LR |
41 | /* And one for FreeBSD: */ |
| 42 | # if defined(__FreeBSD__) | |
| 43 | # define FREEBSD | |
| 44 | # endif | |
| 45 | ||
| 70f72767 | 46 | /* Determine the machine type: */ |
| b6459d9a AG |
47 | # if defined(__XSCALE__) |
| 48 | # define ARM32 | |
| 49 | # if !defined(LINUX) | |
| 50 | # define NOSYS | |
| 51 | # define mach_type_known | |
| 52 | # endif | |
| 53 | # endif | |
| 70f72767 TT |
54 | # if defined(sun) && defined(mc68000) |
| 55 | # define M68K | |
| 56 | # define SUNOS4 | |
| 57 | # define mach_type_known | |
| 58 | # endif | |
| 59 | # if defined(hp9000s300) | |
| 60 | # define M68K | |
| 61 | # define HP | |
| 62 | # define mach_type_known | |
| 63 | # endif | |
| 4c7726b1 | 64 | # if defined(OPENBSD) && defined(m68k) |
| 70f72767 | 65 | # define M68K |
| 70f72767 TT |
66 | # define mach_type_known |
| 67 | # endif | |
| 4c7726b1 | 68 | # if defined(OPENBSD) && defined(__sparc__) |
| 85f29b3b | 69 | # define SPARC |
| 85f29b3b TT |
70 | # define mach_type_known |
| 71 | # endif | |
| 4c7726b1 | 72 | # if defined(NETBSD) && defined(m68k) |
| 70f72767 | 73 | # define M68K |
| 70f72767 TT |
74 | # define mach_type_known |
| 75 | # endif | |
| 4c7726b1 | 76 | # if defined(NETBSD) && defined(__powerpc__) |
| abdbd4a8 BM |
77 | # define POWERPC |
| 78 | # define mach_type_known | |
| 79 | # endif | |
| 4c7726b1 | 80 | # if defined(NETBSD) && defined(__arm32__) |
| 56293c2b | 81 | # define ARM32 |
| 56293c2b BM |
82 | # define mach_type_known |
| 83 | # endif | |
| 70f72767 TT |
84 | # if defined(vax) |
| 85 | # define VAX | |
| 86 | # ifdef ultrix | |
| 87 | # define ULTRIX | |
| 88 | # else | |
| 89 | # define BSD | |
| 90 | # endif | |
| 91 | # define mach_type_known | |
| 92 | # endif | |
| 79f777fd | 93 | # if defined(mips) || defined(__mips) || defined(_mips) |
| 70f72767 | 94 | # define MIPS |
| 79f777fd BM |
95 | # if defined(nec_ews) || defined(_nec_ews) |
| 96 | # define EWS4800 | |
| 97 | # endif | |
| 179a9caf JT |
98 | # if !defined(LINUX) && !defined(EWS4800) && !defined(NETBSD) |
| 99 | # if defined(ultrix) || defined(__ultrix) | |
| 56293c2b BM |
100 | # define ULTRIX |
| 101 | # else | |
| 102 | # if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) \ | |
| 103 | || defined(__SYSTYPE_SVR4__) | |
| 104 | # define IRIX5 /* or IRIX 6.X */ | |
| 105 | # else | |
| 106 | # define RISCOS /* or IRIX 4.X */ | |
| 107 | # endif | |
| 108 | # endif | |
| 109 | # endif /* !LINUX */ | |
| 70f72767 TT |
110 | # define mach_type_known |
| 111 | # endif | |
| abdbd4a8 | 112 | # if defined(sequent) && (defined(i386) || defined(__i386__)) |
| 70f72767 TT |
113 | # define I386 |
| 114 | # define SEQUENT | |
| 115 | # define mach_type_known | |
| 116 | # endif | |
| abdbd4a8 | 117 | # if defined(sun) && (defined(i386) || defined(__i386__)) |
| 70f72767 TT |
118 | # define I386 |
| 119 | # define SUNOS5 | |
| 120 | # define mach_type_known | |
| 121 | # endif | |
| 122 | # if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__) | |
| 123 | # define I386 | |
| 124 | # define OS2 | |
| 125 | # define mach_type_known | |
| 126 | # endif | |
| 127 | # if defined(ibm032) | |
| 128 | # define RT | |
| 129 | # define mach_type_known | |
| 130 | # endif | |
| 131 | # if defined(sun) && (defined(sparc) || defined(__sparc)) | |
| 132 | # define SPARC | |
| 133 | /* Test for SunOS 5.x */ | |
| 134 | # include <errno.h> | |
| 135 | # ifdef ECHRNG | |
| 136 | # define SUNOS5 | |
| 137 | # else | |
| 138 | # define SUNOS4 | |
| 139 | # endif | |
| 140 | # define mach_type_known | |
| 141 | # endif | |
| 85f29b3b | 142 | # if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \ |
| abdbd4a8 | 143 | && !defined(__OpenBSD__) && !(__NetBSD__) |
| 70f72767 TT |
144 | # define SPARC |
| 145 | # define DRSNX | |
| 146 | # define mach_type_known | |
| 147 | # endif | |
| 148 | # if defined(_IBMR2) | |
| 149 | # define RS6000 | |
| 150 | # define mach_type_known | |
| 151 | # endif | |
| abdbd4a8 BM |
152 | # if defined(__NetBSD__) && defined(__sparc__) |
| 153 | # define SPARC | |
| 154 | # define mach_type_known | |
| 155 | # endif | |
| 70f72767 TT |
156 | # if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386) |
| 157 | /* The above test may need refinement */ | |
| 158 | # define I386 | |
| 159 | # if defined(_SCO_ELF) | |
| 160 | # define SCO_ELF | |
| 161 | # else | |
| 162 | # define SCO | |
| 163 | # endif | |
| 164 | # define mach_type_known | |
| 165 | # endif | |
| 166 | # if defined(_AUX_SOURCE) | |
| 167 | # define M68K | |
| 168 | # define SYSV | |
| 169 | # define mach_type_known | |
| 170 | # endif | |
| 56293c2b | 171 | # if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \ |
| 70f72767 TT |
172 | || defined(hppa) || defined(__hppa__) |
| 173 | # define HP_PA | |
| 56293c2b BM |
174 | # ifndef LINUX |
| 175 | # define HPUX | |
| 176 | # endif | |
| 70f72767 TT |
177 | # define mach_type_known |
| 178 | # endif | |
| 4c7726b1 BM |
179 | # if defined(__ia64) && defined(_HPUX_SOURCE) |
| 180 | # define IA64 | |
| 181 | # define HPUX | |
| 182 | # define mach_type_known | |
| 183 | # endif | |
| abdbd4a8 BM |
184 | # if defined(__BEOS__) && defined(_X86_) |
| 185 | # define I386 | |
| 186 | # define BEOS | |
| 187 | # define mach_type_known | |
| 188 | # endif | |
| 85f29b3b | 189 | # if defined(LINUX) && (defined(i386) || defined(__i386__)) |
| 70f72767 TT |
190 | # define I386 |
| 191 | # define mach_type_known | |
| 192 | # endif | |
| 48528b67 BT |
193 | # if defined(LINUX) && defined(__x86_64__) |
| 194 | # define X86_64 | |
| 195 | # define mach_type_known | |
| 196 | # endif | |
| 56293c2b BM |
197 | # if defined(LINUX) && (defined(__ia64__) || defined(__ia64)) |
| 198 | # define IA64 | |
| 199 | # define mach_type_known | |
| 200 | # endif | |
| 5a2586cf | 201 | # if defined(LINUX) && (defined(powerpc) || defined(__powerpc__)) |
| 70f72767 TT |
202 | # define POWERPC |
| 203 | # define mach_type_known | |
| 204 | # endif | |
| 205 | # if defined(LINUX) && defined(__mc68000__) | |
| 206 | # define M68K | |
| 207 | # define mach_type_known | |
| 208 | # endif | |
| 56293c2b | 209 | # if defined(LINUX) && (defined(sparc) || defined(__sparc__)) |
| 70f72767 | 210 | # define SPARC |
| 70f72767 TT |
211 | # define mach_type_known |
| 212 | # endif | |
| abdbd4a8 | 213 | # if defined(LINUX) && defined(__arm__) |
| 56293c2b BM |
214 | # define ARM32 |
| 215 | # define mach_type_known | |
| 216 | # endif | |
| abdbd4a8 BM |
217 | # if defined(LINUX) && defined(__sh__) |
| 218 | # define SH | |
| 219 | # define mach_type_known | |
| 220 | # endif | |
| 70f72767 TT |
221 | # if defined(__alpha) || defined(__alpha__) |
| 222 | # define ALPHA | |
| c0561434 | 223 | # if !defined(LINUX) && !defined(NETBSD) && !defined(OPENBSD) && !defined(FREEBSD) |
| 70f72767 TT |
224 | # define OSF1 /* a.k.a Digital Unix */ |
| 225 | # endif | |
| 226 | # define mach_type_known | |
| 227 | # endif | |
| 85f29b3b | 228 | # if defined(_AMIGA) && !defined(AMIGA) |
| 70f72767 | 229 | # define AMIGA |
| 85f29b3b TT |
230 | # endif |
| 231 | # ifdef AMIGA | |
| 232 | # define M68K | |
| 70f72767 TT |
233 | # define mach_type_known |
| 234 | # endif | |
| 235 | # if defined(THINK_C) || defined(__MWERKS__) && !defined(__powerc) | |
| 236 | # define M68K | |
| 237 | # define MACOS | |
| 238 | # define mach_type_known | |
| 239 | # endif | |
| 240 | # if defined(__MWERKS__) && defined(__powerc) | |
| 241 | # define POWERPC | |
| 242 | # define MACOS | |
| 243 | # define mach_type_known | |
| 244 | # endif | |
| abdbd4a8 BM |
245 | # if defined(macosx) || \ |
| 246 | defined(__APPLE__) && defined(__MACH__) && defined(__ppc__) | |
| 85f29b3b TT |
247 | # define MACOSX |
| 248 | # define POWERPC | |
| 249 | # define mach_type_known | |
| 250 | # endif | |
| abdbd4a8 BM |
251 | # if defined(__APPLE__) && defined(__MACH__) && defined(__i386__) |
| 252 | # define MACOSX | |
| 253 | # define I386 | |
| 254 | --> Not really supported, but at least we recognize it. | |
| 255 | # endif | |
| 70f72767 TT |
256 | # if defined(NeXT) && defined(mc68000) |
| 257 | # define M68K | |
| 258 | # define NEXT | |
| 259 | # define mach_type_known | |
| 260 | # endif | |
| abdbd4a8 | 261 | # if defined(NeXT) && (defined(i386) || defined(__i386__)) |
| 70f72767 TT |
262 | # define I386 |
| 263 | # define NEXT | |
| 264 | # define mach_type_known | |
| 265 | # endif | |
| abdbd4a8 | 266 | # if defined(__OpenBSD__) && (defined(i386) || defined(__i386__)) |
| 70f72767 TT |
267 | # define I386 |
| 268 | # define OPENBSD | |
| 269 | # define mach_type_known | |
| 270 | # endif | |
| c0561434 | 271 | # if defined(FREEBSD) && (defined(i386) || defined(__i386__)) |
| 70f72767 | 272 | # define I386 |
| 70f72767 TT |
273 | # define mach_type_known |
| 274 | # endif | |
| abdbd4a8 | 275 | # if defined(__NetBSD__) && (defined(i386) || defined(__i386__)) |
| 70f72767 | 276 | # define I386 |
| 70f72767 TT |
277 | # define mach_type_known |
| 278 | # endif | |
| abdbd4a8 | 279 | # if defined(bsdi) && (defined(i386) || defined(__i386__)) |
| 70f72767 TT |
280 | # define I386 |
| 281 | # define BSDI | |
| 282 | # define mach_type_known | |
| 283 | # endif | |
| 284 | # if !defined(mach_type_known) && defined(__386BSD__) | |
| 285 | # define I386 | |
| 286 | # define THREE86BSD | |
| 287 | # define mach_type_known | |
| 288 | # endif | |
| 289 | # if defined(_CX_UX) && defined(_M88K) | |
| 290 | # define M88K | |
| 291 | # define CX_UX | |
| 292 | # define mach_type_known | |
| 293 | # endif | |
| 294 | # if defined(DGUX) | |
| 295 | # define M88K | |
| 296 | /* DGUX defined */ | |
| 297 | # define mach_type_known | |
| 298 | # endif | |
| abdbd4a8 BM |
299 | # if defined(_WIN32_WCE) |
| 300 | /* SH3, SH4, MIPS already defined for corresponding architectures */ | |
| 301 | # if defined(SH3) || defined(SH4) | |
| 302 | # define SH | |
| 303 | # endif | |
| 304 | # if defined(x86) | |
| 305 | # define I386 | |
| 306 | # endif | |
| 307 | # if defined(ARM) | |
| 308 | # define ARM32 | |
| 309 | # endif | |
| 310 | # define MSWINCE | |
| 70f72767 | 311 | # define mach_type_known |
| abdbd4a8 BM |
312 | # else |
| 313 | # if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \ | |
| 314 | || defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__) | |
| 315 | # define I386 | |
| 316 | # define MSWIN32 /* or Win32s */ | |
| 317 | # define mach_type_known | |
| 318 | # endif | |
| 70f72767 TT |
319 | # endif |
| 320 | # if defined(__DJGPP__) | |
| 321 | # define I386 | |
| 322 | # ifndef DJGPP | |
| 323 | # define DJGPP /* MSDOS running the DJGPP port of GCC */ | |
| 324 | # endif | |
| 325 | # define mach_type_known | |
| 326 | # endif | |
| 327 | # if defined(__CYGWIN32__) || defined(__CYGWIN__) | |
| 328 | # define I386 | |
| 329 | # define CYGWIN32 | |
| 330 | # define mach_type_known | |
| 331 | # endif | |
| 56293c2b BM |
332 | # if defined(__MINGW32__) |
| 333 | # define I386 | |
| 334 | # define MSWIN32 | |
| 335 | # define mach_type_known | |
| 336 | # endif | |
| 70f72767 TT |
337 | # if defined(__BORLANDC__) |
| 338 | # define I386 | |
| 339 | # define MSWIN32 | |
| 340 | # define mach_type_known | |
| 341 | # endif | |
| 342 | # if defined(_UTS) && !defined(mach_type_known) | |
| 343 | # define S370 | |
| 344 | # define UTS4 | |
| 345 | # define mach_type_known | |
| 346 | # endif | |
| 56293c2b BM |
347 | # if defined(__pj__) |
| 348 | # define PJ | |
| 349 | # define mach_type_known | |
| 350 | # endif | |
| abdbd4a8 BM |
351 | # if defined(__embedded__) && defined(PPC) |
| 352 | # define POWERPC | |
| 353 | # define NOSYS | |
| 354 | # define mach_type_known | |
| 355 | # endif | |
| 70f72767 TT |
356 | /* Ivan Demakov */ |
| 357 | # if defined(__WATCOMC__) && defined(__386__) | |
| 358 | # define I386 | |
| 359 | # if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW) | |
| 360 | # if defined(__OS2__) | |
| 361 | # define OS2 | |
| 362 | # else | |
| 363 | # if defined(__WINDOWS_386__) || defined(__NT__) | |
| 364 | # define MSWIN32 | |
| 365 | # else | |
| 366 | # define DOS4GW | |
| 367 | # endif | |
| 368 | # endif | |
| 369 | # endif | |
| 370 | # define mach_type_known | |
| 371 | # endif | |
| abdbd4a8 | 372 | # if defined(__s390__) && defined(LINUX) |
| 10a197ee | 373 | # define S390 |
| abdbd4a8 BM |
374 | # define mach_type_known |
| 375 | # endif | |
| 5a2586cf TT |
376 | # if defined(__GNU__) |
| 377 | # if defined(__i386__) | |
| 378 | /* The Debian Hurd running on generic PC */ | |
| 379 | # define HURD | |
| 380 | # define I386 | |
| 381 | # define mach_type_known | |
| 382 | # endif | |
| 383 | # endif | |
| 70f72767 TT |
384 | |
| 385 | /* Feel free to add more clauses here */ | |
| 386 | ||
| 387 | /* Or manually define the machine type here. A machine type is */ | |
| 388 | /* characterized by the architecture. Some */ | |
| 389 | /* machine types are further subdivided by OS. */ | |
| 390 | /* the macros ULTRIX, RISCOS, and BSD to distinguish. */ | |
| 391 | /* Note that SGI IRIX is treated identically to RISCOS. */ | |
| 392 | /* SYSV on an M68K actually means A/UX. */ | |
| 393 | /* The distinction in these cases is usually the stack starting address */ | |
| 394 | # ifndef mach_type_known | |
| 395 | --> unknown machine type | |
| 396 | # endif | |
| 397 | /* Mapping is: M68K ==> Motorola 680X0 */ | |
| 398 | /* (SUNOS4,HP,NEXT, and SYSV (A/UX), */ | |
| 399 | /* MACOS and AMIGA variants) */ | |
| 400 | /* I386 ==> Intel 386 */ | |
| 401 | /* (SEQUENT, OS2, SCO, LINUX, NETBSD, */ | |
| 402 | /* FREEBSD, THREE86BSD, MSWIN32, */ | |
| 403 | /* BSDI,SUNOS5, NEXT, other variants) */ | |
| 404 | /* NS32K ==> Encore Multimax */ | |
| 405 | /* MIPS ==> R2000 or R3000 */ | |
| 406 | /* (RISCOS, ULTRIX variants) */ | |
| 407 | /* VAX ==> DEC VAX */ | |
| 408 | /* (BSD, ULTRIX variants) */ | |
| 409 | /* RS6000 ==> IBM RS/6000 AIX3.X */ | |
| 410 | /* RT ==> IBM PC/RT */ | |
| 411 | /* HP_PA ==> HP9000/700 & /800 */ | |
| 4c7726b1 | 412 | /* HP/UX, LINUX */ |
| abdbd4a8 BM |
413 | /* SPARC ==> SPARC v7/v8/v9 */ |
| 414 | /* (SUNOS4, SUNOS5, LINUX, */ | |
| 70f72767 TT |
415 | /* DRSNX variants) */ |
| 416 | /* ALPHA ==> DEC Alpha */ | |
| 417 | /* (OSF1 and LINUX variants) */ | |
| 418 | /* M88K ==> Motorola 88XX0 */ | |
| 419 | /* (CX_UX and DGUX) */ | |
| 420 | /* S370 ==> 370-like machine */ | |
| 421 | /* running Amdahl UTS4 */ | |
| 10a197ee UW |
422 | /* S390 ==> 390-like machine */ |
| 423 | /* running LINUX */ | |
| 56293c2b | 424 | /* ARM32 ==> Intel StrongARM */ |
| 4c7726b1 | 425 | /* IA64 ==> Intel IPF */ |
| 56293c2b | 426 | /* (e.g. Itanium) */ |
| 4c7726b1 BM |
427 | /* (LINUX and HPUX) */ |
| 428 | /* IA64_32 ==> IA64 w/32 bit ABI */ | |
| 429 | /* (HPUX) */ | |
| abdbd4a8 BM |
430 | /* SH ==> Hitachi SuperH */ |
| 431 | /* (LINUX & MSWINCE) */ | |
| 48528b67 | 432 | /* X86_64 ==> AMD x86-64 */ |
| 70f72767 TT |
433 | |
| 434 | ||
| 435 | /* | |
| 436 | * For each architecture and OS, the following need to be defined: | |
| 437 | * | |
| 438 | * CPP_WORD_SZ is a simple integer constant representing the word size. | |
| 439 | * in bits. We assume byte addressibility, where a byte has 8 bits. | |
| 440 | * We also assume CPP_WORD_SZ is either 32 or 64. | |
| 441 | * (We care about the length of pointers, not hardware | |
| 442 | * bus widths. Thus a 64 bit processor with a C compiler that uses | |
| 443 | * 32 bit pointers should use CPP_WORD_SZ of 32, not 64. Default is 32.) | |
| 444 | * | |
| 445 | * MACH_TYPE is a string representation of the machine type. | |
| 446 | * OS_TYPE is analogous for the OS. | |
| 447 | * | |
| 448 | * ALIGNMENT is the largest N, such that | |
| 449 | * all pointer are guaranteed to be aligned on N byte boundaries. | |
| 450 | * defining it to be 1 will always work, but perform poorly. | |
| 451 | * | |
| 452 | * DATASTART is the beginning of the data segment. | |
| 453 | * On UNIX systems, the collector will scan the area between DATASTART | |
| 454 | * and DATAEND for root pointers. | |
| 455 | * | |
| ed47971a LR |
456 | * DATAEND, if not `end' where `end' is defined as ``extern int end[];''. |
| 457 | * RTH suggests gaining access to linker script synth'd values with | |
| 458 | * this idiom instead of `&end' where `end' is defined as ``extern int end;'' . | |
| b911c031 | 459 | * Otherwise, ``GCC will assume these are in .sdata/.sbss'' and it will, e.g., |
| e285b259 | 460 | * cause failures on alpha*-*-* with ``-msmall-data or -fpic'' or mips-*-* |
| b911c031 | 461 | * without any special options. |
| 70f72767 TT |
462 | * |
| 463 | * ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice | |
| 464 | * the pointer size. | |
| 465 | * | |
| 466 | * STACKBOTTOM is the cool end of the stack, which is usually the | |
| 467 | * highest address in the stack. | |
| 468 | * Under PCR or OS/2, we have other ways of finding thread stacks. | |
| 469 | * For each machine, the following should: | |
| 470 | * 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and | |
| 471 | * 2) define exactly one of | |
| 472 | * STACKBOTTOM (should be defined to be an expression) | |
| 473 | * HEURISTIC1 | |
| 474 | * HEURISTIC2 | |
| 475 | * If either of the last two macros are defined, then STACKBOTTOM is computed | |
| 476 | * during collector startup using one of the following two heuristics: | |
| 477 | * HEURISTIC1: Take an address inside GC_init's frame, and round it up to | |
| 478 | * the next multiple of STACK_GRAN. | |
| 479 | * HEURISTIC2: Take an address inside GC_init's frame, increment it repeatedly | |
| 480 | * in small steps (decrement if STACK_GROWS_UP), and read the value | |
| 481 | * at each location. Remember the value when the first | |
| 482 | * Segmentation violation or Bus error is signalled. Round that | |
| 483 | * to the nearest plausible page boundary, and use that instead | |
| 484 | * of STACKBOTTOM. | |
| 485 | * | |
| 179977c1 BM |
486 | * Gustavo Rodriguez-Rivera points out that on most (all?) Unix machines, |
| 487 | * the value of environ is a pointer that can serve as STACKBOTTOM. | |
| 488 | * I expect that HEURISTIC2 can be replaced by this approach, which | |
| abdbd4a8 BM |
489 | * interferes far less with debugging. However it has the disadvantage |
| 490 | * that it's confused by a putenv call before the collector is initialized. | |
| 491 | * This could be dealt with by intercepting putenv ... | |
| 179977c1 | 492 | * |
| 70f72767 TT |
493 | * If no expression for STACKBOTTOM can be found, and neither of the above |
| 494 | * heuristics are usable, the collector can still be used with all of the above | |
| 495 | * undefined, provided one of the following is done: | |
| 496 | * 1) GC_mark_roots can be changed to somehow mark from the correct stack(s) | |
| 497 | * without reference to STACKBOTTOM. This is appropriate for use in | |
| 498 | * conjunction with thread packages, since there will be multiple stacks. | |
| 499 | * (Allocating thread stacks in the heap, and treating them as ordinary | |
| 500 | * heap data objects is also possible as a last resort. However, this is | |
| 501 | * likely to introduce significant amounts of excess storage retention | |
| 502 | * unless the dead parts of the thread stacks are periodically cleared.) | |
| 503 | * 2) Client code may set GC_stackbottom before calling any GC_ routines. | |
| 504 | * If the author of the client code controls the main program, this is | |
| 505 | * easily accomplished by introducing a new main program, setting | |
| 506 | * GC_stackbottom to the address of a local variable, and then calling | |
| 507 | * the original main program. The new main program would read something | |
| 508 | * like: | |
| 509 | * | |
| 510 | * # include "gc_private.h" | |
| 511 | * | |
| 512 | * main(argc, argv, envp) | |
| 513 | * int argc; | |
| 514 | * char **argv, **envp; | |
| 515 | * { | |
| 516 | * int dummy; | |
| 517 | * | |
| 518 | * GC_stackbottom = (ptr_t)(&dummy); | |
| 519 | * return(real_main(argc, argv, envp)); | |
| 520 | * } | |
| 521 | * | |
| 522 | * | |
| 523 | * Each architecture may also define the style of virtual dirty bit | |
| 524 | * implementation to be used: | |
| 525 | * MPROTECT_VDB: Write protect the heap and catch faults. | |
| 526 | * PROC_VDB: Use the SVR4 /proc primitives to read dirty bits. | |
| 527 | * | |
| 528 | * An architecture may define DYNAMIC_LOADING if dynamic_load.c | |
| 529 | * defined GC_register_dynamic_libraries() for the architecture. | |
| 56293c2b BM |
530 | * |
| 531 | * An architecture may define PREFETCH(x) to preload the cache with *x. | |
| 532 | * This defaults to a no-op. | |
| 533 | * | |
| 534 | * PREFETCH_FOR_WRITE(x) is used if *x is about to be written. | |
| 535 | * | |
| 536 | * An architecture may also define CLEAR_DOUBLE(x) to be a fast way to | |
| 537 | * clear the two words at GC_malloc-aligned address x. By default, | |
| 538 | * word stores of 0 are used instead. | |
| 70f72767 TT |
539 | */ |
| 540 | ||
| 5a2586cf TT |
541 | /* If we are using a recent version of gcc, we can use __builtin_unwind_init() |
| 542 | * to push the relevant registers onto the stack. This generally makes | |
| 543 | * USE_GENERIC_PUSH_REGS the preferred approach for marking from registers. | |
| 544 | */ | |
| 545 | # if defined(__GNUC__) && ((__GNUC__ >= 3) || \ | |
| 546 | (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) | |
| 547 | # define HAVE_BUILTIN_UNWIND_INIT | |
| 548 | # endif | |
| 70f72767 TT |
549 | |
| 550 | # define STACK_GRAN 0x1000000 | |
| 551 | # ifdef M68K | |
| 552 | # define MACH_TYPE "M68K" | |
| 553 | # define ALIGNMENT 2 | |
| 554 | # ifdef OPENBSD | |
| 555 | # define OS_TYPE "OPENBSD" | |
| 556 | # define HEURISTIC2 | |
| ed47971a LR |
557 | extern char etext[]; |
| 558 | # define DATASTART ((ptr_t)(etext)) | |
| 70f72767 TT |
559 | # endif |
| 560 | # ifdef NETBSD | |
| 561 | # define OS_TYPE "NETBSD" | |
| 562 | # define HEURISTIC2 | |
| ed47971a LR |
563 | extern char etext[]; |
| 564 | # define DATASTART ((ptr_t)(etext)) | |
| 70f72767 TT |
565 | # endif |
| 566 | # ifdef LINUX | |
| 567 | # define OS_TYPE "LINUX" | |
| 568 | # define STACKBOTTOM ((ptr_t)0xf0000000) | |
| 4c7726b1 | 569 | /* # define MPROTECT_VDB - Reported to not work 9/17/01 */ |
| 70f72767 TT |
570 | # ifdef __ELF__ |
| 571 | # define DYNAMIC_LOADING | |
| abdbd4a8 BM |
572 | # include <features.h> |
| 573 | # if defined(__GLIBC__)&& __GLIBC__>=2 | |
| 574 | # define LINUX_DATA_START | |
| 575 | # else /* !GLIBC2 */ | |
| 576 | extern char **__environ; | |
| 577 | # define DATASTART ((ptr_t)(&__environ)) | |
| 70f72767 TT |
578 | /* hideous kludge: __environ is the first */ |
| 579 | /* word in crt0.o, and delimits the start */ | |
| 580 | /* of the data segment, no matter which */ | |
| 581 | /* ld options were passed through. */ | |
| 582 | /* We could use _etext instead, but that */ | |
| 583 | /* would include .rodata, which may */ | |
| 584 | /* contain large read-only data tables */ | |
| 585 | /* that we'd rather not scan. */ | |
| abdbd4a8 | 586 | # endif /* !GLIBC2 */ |
| ed47971a LR |
587 | extern int _end[]; |
| 588 | # define DATAEND (_end) | |
| 70f72767 | 589 | # else |
| ed47971a LR |
590 | extern int etext[]; |
| 591 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| 70f72767 TT |
592 | # endif |
| 593 | # endif | |
| 594 | # ifdef SUNOS4 | |
| 595 | # define OS_TYPE "SUNOS4" | |
| ed47971a LR |
596 | extern char etext[]; |
| 597 | # define DATASTART ((ptr_t)((((word) (etext)) + 0x1ffff) & ~0x1ffff)) | |
| 70f72767 TT |
598 | # define HEURISTIC1 /* differs */ |
| 599 | # define DYNAMIC_LOADING | |
| 600 | # endif | |
| 601 | # ifdef HP | |
| 602 | # define OS_TYPE "HP" | |
| ed47971a LR |
603 | extern char etext[]; |
| 604 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| 70f72767 TT |
605 | # define STACKBOTTOM ((ptr_t) 0xffeffffc) |
| 606 | /* empirically determined. seems to work. */ | |
| 607 | # include <unistd.h> | |
| 608 | # define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) | |
| 609 | # endif | |
| 610 | # ifdef SYSV | |
| 611 | # define OS_TYPE "SYSV" | |
| ed47971a LR |
612 | extern etext[]; |
| 613 | # define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \ | |
| 70f72767 | 614 | & ~0x3fffff) \ |
| ed47971a | 615 | +((word)etext & 0x1fff)) |
| 70f72767 TT |
616 | /* This only works for shared-text binaries with magic number 0413. |
| 617 | The other sorts of SysV binaries put the data at the end of the text, | |
| ed47971a | 618 | in which case the default of etext would work. Unfortunately, |
| 70f72767 TT |
619 | handling both would require having the magic-number available. |
| 620 | -- Parag | |
| 621 | */ | |
| 622 | # define STACKBOTTOM ((ptr_t)0xFFFFFFFE) | |
| 623 | /* The stack starts at the top of memory, but */ | |
| 624 | /* 0x0 cannot be used as setjump_test complains */ | |
| 625 | /* that the stack direction is incorrect. Two */ | |
| 626 | /* bytes down from 0x0 should be safe enough. */ | |
| 627 | /* --Parag */ | |
| 628 | # include <sys/mmu.h> | |
| 629 | # define GETPAGESIZE() PAGESIZE /* Is this still right? */ | |
| 630 | # endif | |
| 631 | # ifdef AMIGA | |
| 632 | # define OS_TYPE "AMIGA" | |
| 633 | /* STACKBOTTOM and DATASTART handled specially */ | |
| 634 | /* in os_dep.c */ | |
| 635 | # define DATAEND /* not needed */ | |
| 636 | # define GETPAGESIZE() 4096 | |
| 637 | # endif | |
| 638 | # ifdef MACOS | |
| 639 | # ifndef __LOWMEM__ | |
| 640 | # include <LowMem.h> | |
| 641 | # endif | |
| 642 | # define OS_TYPE "MACOS" | |
| 643 | /* see os_dep.c for details of global data segments. */ | |
| 644 | # define STACKBOTTOM ((ptr_t) LMGetCurStackBase()) | |
| 645 | # define DATAEND /* not needed */ | |
| 646 | # define GETPAGESIZE() 4096 | |
| 647 | # endif | |
| 648 | # ifdef NEXT | |
| 649 | # define OS_TYPE "NEXT" | |
| 650 | # define DATASTART ((ptr_t) get_etext()) | |
| 651 | # define STACKBOTTOM ((ptr_t) 0x4000000) | |
| 652 | # define DATAEND /* not needed */ | |
| 653 | # endif | |
| 654 | # endif | |
| 655 | ||
| 656 | # ifdef POWERPC | |
| 657 | # define MACH_TYPE "POWERPC" | |
| 70f72767 | 658 | # ifdef MACOS |
| 85f29b3b | 659 | # define ALIGNMENT 2 /* Still necessary? Could it be 4? */ |
| 70f72767 TT |
660 | # ifndef __LOWMEM__ |
| 661 | # include <LowMem.h> | |
| 662 | # endif | |
| 663 | # define OS_TYPE "MACOS" | |
| 664 | /* see os_dep.c for details of global data segments. */ | |
| 665 | # define STACKBOTTOM ((ptr_t) LMGetCurStackBase()) | |
| 666 | # define DATAEND /* not needed */ | |
| 667 | # endif | |
| 668 | # ifdef LINUX | |
| 85f29b3b TT |
669 | # define ALIGNMENT 4 /* Guess. Can someone verify? */ |
| 670 | /* This was 2, but that didn't sound right. */ | |
| 70f72767 TT |
671 | # define OS_TYPE "LINUX" |
| 672 | # define HEURISTIC1 | |
| 179977c1 | 673 | # define DYNAMIC_LOADING |
| 70f72767 TT |
674 | # undef STACK_GRAN |
| 675 | # define STACK_GRAN 0x10000000 | |
| 85f29b3b | 676 | /* Stack usually starts at 0x80000000 */ |
| 56293c2b | 677 | # define LINUX_DATA_START |
| ed47971a LR |
678 | extern int _end[]; |
| 679 | # define DATAEND (_end) | |
| 70f72767 | 680 | # endif |
| 85f29b3b | 681 | # ifdef MACOSX |
| abdbd4a8 | 682 | /* There are reasons to suspect this may not be reliable. */ |
| 85f29b3b TT |
683 | # define ALIGNMENT 4 |
| 684 | # define OS_TYPE "MACOSX" | |
| 685 | # define DATASTART ((ptr_t) get_etext()) | |
| 686 | # define STACKBOTTOM ((ptr_t) 0xc0000000) | |
| 687 | # define DATAEND /* not needed */ | |
| abdbd4a8 BM |
688 | # define MPROTECT_VDB |
| 689 | # include <unistd.h> | |
| 690 | # define GETPAGESIZE() getpagesize() | |
| 691 | # endif | |
| 692 | # ifdef NETBSD | |
| 693 | # define ALIGNMENT 4 | |
| 694 | # define OS_TYPE "NETBSD" | |
| 695 | # define HEURISTIC2 | |
| ed47971a | 696 | extern char etext[]; |
| abdbd4a8 BM |
697 | # define DATASTART GC_data_start |
| 698 | # define DYNAMIC_LOADING | |
| 699 | # endif | |
| 700 | # ifdef NOSYS | |
| 701 | # define ALIGNMENT 4 | |
| 702 | # define OS_TYPE "NOSYS" | |
| ed47971a LR |
703 | extern void __end[], __dso_handle[]; |
| 704 | # define DATASTART (__dso_handle) /* OK, that's ugly. */ | |
| 705 | # define DATAEND (__end) | |
| abdbd4a8 BM |
706 | /* Stack starts at 0xE0000000 for the simulator. */ |
| 707 | # undef STACK_GRAN | |
| 708 | # define STACK_GRAN 0x10000000 | |
| 709 | # define HEURISTIC1 | |
| 85f29b3b | 710 | # endif |
| 70f72767 TT |
711 | # endif |
| 712 | ||
| 713 | # ifdef VAX | |
| 714 | # define MACH_TYPE "VAX" | |
| 715 | # define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */ | |
| ed47971a LR |
716 | extern char etext[]; |
| 717 | # define DATASTART ((ptr_t)(etext)) | |
| 70f72767 TT |
718 | # ifdef BSD |
| 719 | # define OS_TYPE "BSD" | |
| 720 | # define HEURISTIC1 | |
| 721 | /* HEURISTIC2 may be OK, but it's hard to test. */ | |
| 722 | # endif | |
| 723 | # ifdef ULTRIX | |
| 724 | # define OS_TYPE "ULTRIX" | |
| 725 | # define STACKBOTTOM ((ptr_t) 0x7fffc800) | |
| 726 | # endif | |
| 727 | # endif | |
| 728 | ||
| 729 | # ifdef RT | |
| 730 | # define MACH_TYPE "RT" | |
| 731 | # define ALIGNMENT 4 | |
| 732 | # define DATASTART ((ptr_t) 0x10000000) | |
| 733 | # define STACKBOTTOM ((ptr_t) 0x1fffd800) | |
| 734 | # endif | |
| 735 | ||
| 736 | # ifdef SPARC | |
| 737 | # define MACH_TYPE "SPARC" | |
| abdbd4a8 BM |
738 | # if defined(__arch64__) || defined(__sparcv9) |
| 739 | # define ALIGNMENT 8 | |
| a5b2a65b JS |
740 | # define CPP_WORDSZ 64 |
| 741 | # define ELF_CLASS ELFCLASS64 | |
| abdbd4a8 BM |
742 | # else |
| 743 | # define ALIGNMENT 4 /* Required by hardware */ | |
| 79f777fd | 744 | # define CPP_WORDSZ 32 |
| abdbd4a8 | 745 | # endif |
| 70f72767 | 746 | # define ALIGN_DOUBLE |
| 70f72767 TT |
747 | # ifdef SUNOS5 |
| 748 | # define OS_TYPE "SUNOS5" | |
| ed47971a LR |
749 | extern int _etext[]; |
| 750 | extern int _end[]; | |
| 70f72767 | 751 | extern char * GC_SysVGetDataStart(); |
| ed47971a LR |
752 | # define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, _etext) |
| 753 | # define DATAEND (_end) | |
| 79f777fd | 754 | # if !defined(USE_MMAP) && defined(REDIRECT_MALLOC) |
| 70f72767 | 755 | # define USE_MMAP |
| 79f777fd BM |
756 | /* Otherwise we now use calloc. Mmap may result in the */ |
| 757 | /* heap interleaved with thread stacks, which can result in */ | |
| 758 | /* excessive blacklisting. Sbrk is unusable since it */ | |
| 759 | /* doesn't interact correctly with the system malloc. */ | |
| 70f72767 TT |
760 | # endif |
| 761 | # ifdef USE_MMAP | |
| 762 | # define HEAP_START (ptr_t)0x40000000 | |
| 763 | # else | |
| 764 | # define HEAP_START DATAEND | |
| 765 | # endif | |
| 766 | # define PROC_VDB | |
| abdbd4a8 BM |
767 | /* HEURISTIC1 reportedly no longer works under 2.7. */ |
| 768 | /* HEURISTIC2 probably works, but this appears to be preferable. */ | |
| 769 | /* Apparently USRSTACK is defined to be USERLIMIT, but in some */ | |
| 770 | /* installations that's undefined. We work around this with a */ | |
| 771 | /* gross hack: */ | |
| 772 | # include <sys/vmparam.h> | |
| 773 | # ifdef USERLIMIT | |
| 774 | /* This should work everywhere, but doesn't. */ | |
| 775 | # define STACKBOTTOM USRSTACK | |
| 776 | # else | |
| 777 | # define HEURISTIC2 | |
| 778 | # endif | |
| 70f72767 TT |
779 | # include <unistd.h> |
| 780 | # define GETPAGESIZE() sysconf(_SC_PAGESIZE) | |
| 781 | /* getpagesize() appeared to be missing from at least one */ | |
| 782 | /* Solaris 5.4 installation. Weird. */ | |
| a61df6c7 | 783 | # define DYNAMIC_LOADING |
| 70f72767 TT |
784 | # endif |
| 785 | # ifdef SUNOS4 | |
| 786 | # define OS_TYPE "SUNOS4" | |
| 787 | /* [If you have a weak stomach, don't read this.] */ | |
| 788 | /* We would like to use: */ | |
| ed47971a | 789 | /* # define DATASTART ((ptr_t)((((word) (etext)) + 0x1fff) & ~0x1fff)) */ |
| 70f72767 | 790 | /* This fails occasionally, due to an ancient, but very */ |
| ed47971a | 791 | /* persistent ld bug. etext is set 32 bytes too high. */ |
| 70f72767 TT |
792 | /* We instead read the text segment size from the a.out */ |
| 793 | /* header, which happens to be mapped into our address space */ | |
| 794 | /* at the start of the text segment. The detective work here */ | |
| 795 | /* was done by Robert Ehrlich, Manuel Serrano, and Bernard */ | |
| 796 | /* Serpette of INRIA. */ | |
| 797 | /* This assumes ZMAGIC, i.e. demand-loadable executables. */ | |
| 798 | # define TEXTSTART 0x2000 | |
| 799 | # define DATASTART ((ptr_t)(*(int *)(TEXTSTART+0x4)+TEXTSTART)) | |
| 800 | # define MPROTECT_VDB | |
| 801 | # define HEURISTIC1 | |
| 802 | # define DYNAMIC_LOADING | |
| 803 | # endif | |
| 804 | # ifdef DRSNX | |
| 70f72767 TT |
805 | # define OS_TYPE "DRSNX" |
| 806 | extern char * GC_SysVGetDataStart(); | |
| ed47971a LR |
807 | extern int etext[]; |
| 808 | # define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, etext) | |
| 70f72767 TT |
809 | # define MPROTECT_VDB |
| 810 | # define STACKBOTTOM ((ptr_t) 0xdfff0000) | |
| 811 | # define DYNAMIC_LOADING | |
| 812 | # endif | |
| 813 | # ifdef LINUX | |
| 814 | # define OS_TYPE "LINUX" | |
| 815 | # ifdef __ELF__ | |
| 56293c2b | 816 | # define DYNAMIC_LOADING |
| 70f72767 | 817 | # else |
| abdbd4a8 | 818 | Linux Sparc/a.out not supported |
| 70f72767 | 819 | # endif |
| ed47971a LR |
820 | extern int _end[]; |
| 821 | extern int _etext[]; | |
| 822 | # define DATAEND (_end) | |
| 70f72767 | 823 | # define SVR4 |
| abdbd4a8 | 824 | # ifdef __arch64__ |
| a61df6c7 DM |
825 | /* libc_stack_end is not set reliably for sparc64 */ |
| 826 | # define STACKBOTTOM ((ptr_t) 0x80000000000) | |
| ed47971a | 827 | # define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, _etext) |
| abdbd4a8 | 828 | # else |
| a61df6c7 | 829 | # define LINUX_STACKBOTTOM |
| ed47971a | 830 | # define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, _etext) |
| abdbd4a8 | 831 | # endif |
| 70f72767 | 832 | # endif |
| 85f29b3b TT |
833 | # ifdef OPENBSD |
| 834 | # define OS_TYPE "OPENBSD" | |
| 835 | # define STACKBOTTOM ((ptr_t) 0xf8000000) | |
| ed47971a LR |
836 | extern int etext[]; |
| 837 | # define DATASTART ((ptr_t)(etext)) | |
| 85f29b3b | 838 | # endif |
| abdbd4a8 BM |
839 | # ifdef NETBSD |
| 840 | # define OS_TYPE "NETBSD" | |
| 841 | # define HEURISTIC2 | |
| 842 | # ifdef __ELF__ | |
| 843 | # define DATASTART GC_data_start | |
| 844 | # define DYNAMIC_LOADING | |
| 845 | # else | |
| ed47971a LR |
846 | extern char etext[]; |
| 847 | # define DATASTART ((ptr_t)(etext)) | |
| abdbd4a8 BM |
848 | # endif |
| 849 | # endif | |
| 70f72767 TT |
850 | # endif |
| 851 | ||
| 852 | # ifdef I386 | |
| 853 | # define MACH_TYPE "I386" | |
| 854 | # define ALIGNMENT 4 /* Appears to hold for all "32 bit" compilers */ | |
| 855 | /* except Borland. The -a4 option fixes */ | |
| 856 | /* Borland. */ | |
| 857 | /* Ivan Demakov: For Watcom the option is -zp4. */ | |
| 858 | # ifndef SMALL_CONFIG | |
| 859 | # define ALIGN_DOUBLE /* Not strictly necessary, but may give speed */ | |
| 860 | /* improvement on Pentiums. */ | |
| 861 | # endif | |
| 5a2586cf TT |
862 | # ifdef HAVE_BUILTIN_UNWIND_INIT |
| 863 | # define USE_GENERIC_PUSH_REGS | |
| 864 | # endif | |
| 70f72767 TT |
865 | # ifdef SEQUENT |
| 866 | # define OS_TYPE "SEQUENT" | |
| ed47971a LR |
867 | extern int etext[]; |
| 868 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| 70f72767 TT |
869 | # define STACKBOTTOM ((ptr_t) 0x3ffff000) |
| 870 | # endif | |
| abdbd4a8 BM |
871 | # ifdef BEOS |
| 872 | # define OS_TYPE "BEOS" | |
| 873 | # include <OS.h> | |
| 874 | # define GETPAGESIZE() B_PAGE_SIZE | |
| ed47971a LR |
875 | extern int etext[]; |
| 876 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| abdbd4a8 | 877 | # endif |
| 70f72767 TT |
878 | # ifdef SUNOS5 |
| 879 | # define OS_TYPE "SUNOS5" | |
| ed47971a | 880 | extern int _etext[], _end[]; |
| 70f72767 | 881 | extern char * GC_SysVGetDataStart(); |
| ed47971a LR |
882 | # define DATASTART GC_SysVGetDataStart(0x1000, _etext) |
| 883 | # define DATAEND (_end) | |
| 884 | /* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */ | |
| abdbd4a8 BM |
885 | /* but reportedly breaks under 2.8. It appears that the stack */ |
| 886 | /* base is a property of the executable, so this should not break */ | |
| 887 | /* old executables. */ | |
| 888 | /* HEURISTIC2 probably works, but this appears to be preferable. */ | |
| 79f777fd | 889 | # include <sys/vm.h> |
| abdbd4a8 | 890 | # define STACKBOTTOM USRSTACK |
| 79f777fd BM |
891 | /* At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */ |
| 892 | /* It appears to be fixed in 2.8 and 2.9. */ | |
| 9c383523 RO |
893 | # ifdef SOLARIS25_PROC_VDB_BUG_FIXED |
| 894 | # define PROC_VDB | |
| 895 | # endif | |
| 70f72767 | 896 | # define DYNAMIC_LOADING |
| 79f777fd | 897 | # if !defined(USE_MMAP) && defined(REDIRECT_MALLOC) |
| 70f72767 | 898 | # define USE_MMAP |
| 79f777fd BM |
899 | /* Otherwise we now use calloc. Mmap may result in the */ |
| 900 | /* heap interleaved with thread stacks, which can result in */ | |
| 901 | /* excessive blacklisting. Sbrk is unusable since it */ | |
| 902 | /* doesn't interact correctly with the system malloc. */ | |
| 70f72767 TT |
903 | # endif |
| 904 | # ifdef USE_MMAP | |
| 905 | # define HEAP_START (ptr_t)0x40000000 | |
| 906 | # else | |
| 907 | # define HEAP_START DATAEND | |
| 908 | # endif | |
| 909 | # endif | |
| 910 | # ifdef SCO | |
| 911 | # define OS_TYPE "SCO" | |
| ed47971a LR |
912 | extern int etext[]; |
| 913 | # define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \ | |
| 70f72767 | 914 | & ~0x3fffff) \ |
| ed47971a | 915 | +((word)etext & 0xfff)) |
| 70f72767 TT |
916 | # define STACKBOTTOM ((ptr_t) 0x7ffffffc) |
| 917 | # endif | |
| 918 | # ifdef SCO_ELF | |
| 919 | # define OS_TYPE "SCO_ELF" | |
| ed47971a LR |
920 | extern int etext[]; |
| 921 | # define DATASTART ((ptr_t)(etext)) | |
| 70f72767 TT |
922 | # define STACKBOTTOM ((ptr_t) 0x08048000) |
| 923 | # define DYNAMIC_LOADING | |
| 924 | # define ELF_CLASS ELFCLASS32 | |
| 925 | # endif | |
| 926 | # ifdef LINUX | |
| 79f777fd BM |
927 | # ifndef __GNUC__ |
| 928 | /* The Intel compiler doesn't like inline assembly */ | |
| 929 | # define USE_GENERIC_PUSH_REGS | |
| 930 | # endif | |
| 70f72767 | 931 | # define OS_TYPE "LINUX" |
| 56293c2b BM |
932 | # define LINUX_STACKBOTTOM |
| 933 | # if 0 | |
| 934 | # define HEURISTIC1 | |
| 935 | # undef STACK_GRAN | |
| 936 | # define STACK_GRAN 0x10000000 | |
| 937 | /* STACKBOTTOM is usually 0xc0000000, but this changes with */ | |
| 938 | /* different kernel configurations. In particular, systems */ | |
| 939 | /* with 2GB physical memory will usually move the user */ | |
| 940 | /* address space limit, and hence initial SP to 0x80000000. */ | |
| 941 | # endif | |
| 4c7726b1 | 942 | # if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC) |
| 70f72767 TT |
943 | # define MPROTECT_VDB |
| 944 | # else | |
| 945 | /* We seem to get random errors in incremental mode, */ | |
| 946 | /* possibly because Linux threads is itself a malloc client */ | |
| 947 | /* and can't deal with the signals. */ | |
| 948 | # endif | |
| 949 | # ifdef __ELF__ | |
| 950 | # define DYNAMIC_LOADING | |
| 951 | # ifdef UNDEFINED /* includes ro data */ | |
| ed47971a LR |
952 | extern int _etext[]; |
| 953 | # define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff)) | |
| 70f72767 TT |
954 | # endif |
| 955 | # include <features.h> | |
| 956 | # if defined(__GLIBC__) && __GLIBC__ >= 2 | |
| 56293c2b | 957 | # define LINUX_DATA_START |
| 70f72767 TT |
958 | # else |
| 959 | extern char **__environ; | |
| 960 | # define DATASTART ((ptr_t)(&__environ)) | |
| 961 | /* hideous kludge: __environ is the first */ | |
| 962 | /* word in crt0.o, and delimits the start */ | |
| 963 | /* of the data segment, no matter which */ | |
| 964 | /* ld options were passed through. */ | |
| 965 | /* We could use _etext instead, but that */ | |
| 966 | /* would include .rodata, which may */ | |
| 967 | /* contain large read-only data tables */ | |
| 968 | /* that we'd rather not scan. */ | |
| 969 | # endif | |
| ed47971a LR |
970 | extern int _end[]; |
| 971 | # define DATAEND (_end) | |
| 70f72767 | 972 | # else |
| ed47971a LR |
973 | extern int etext[]; |
| 974 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| 70f72767 | 975 | # endif |
| 56293c2b BM |
976 | # ifdef USE_I686_PREFETCH |
| 977 | # define PREFETCH(x) \ | |
| 978 | __asm__ __volatile__ (" prefetchnta %0": : "m"(*(char *)(x))) | |
| 979 | /* Empirically prefetcht0 is much more effective at reducing */ | |
| 980 | /* cache miss stalls for the targetted load instructions. But it */ | |
| 981 | /* seems to interfere enough with other cache traffic that the net */ | |
| 982 | /* result is worse than prefetchnta. */ | |
| 983 | # if 0 | |
| 984 | /* Using prefetches for write seems to have a slight negative */ | |
| 985 | /* impact on performance, at least for a PIII/500. */ | |
| 986 | # define PREFETCH_FOR_WRITE(x) \ | |
| 987 | __asm__ __volatile__ (" prefetcht0 %0": : "m"(*(char *)(x))) | |
| 988 | # endif | |
| 989 | # endif | |
| 990 | # ifdef USE_3DNOW_PREFETCH | |
| 991 | # define PREFETCH(x) \ | |
| 992 | __asm__ __volatile__ (" prefetch %0": : "m"(*(char *)(x))) | |
| abdbd4a8 | 993 | # define PREFETCH_FOR_WRITE(x) \ |
| 56293c2b BM |
994 | __asm__ __volatile__ (" prefetchw %0": : "m"(*(char *)(x))) |
| 995 | # endif | |
| 70f72767 TT |
996 | # endif |
| 997 | # ifdef CYGWIN32 | |
| 998 | # define OS_TYPE "CYGWIN32" | |
| ed47971a LR |
999 | extern int _data_start__[]; |
| 1000 | extern int _data_end__[]; | |
| 1001 | extern int _bss_start__[]; | |
| 1002 | extern int _bss_end__[]; | |
| 70f72767 TT |
1003 | /* For binutils 2.9.1, we have */ |
| 1004 | /* DATASTART = _data_start__ */ | |
| 1005 | /* DATAEND = _bss_end__ */ | |
| 1006 | /* whereas for some earlier versions it was */ | |
| 1007 | /* DATASTART = _bss_start__ */ | |
| 1008 | /* DATAEND = _data_end__ */ | |
| 1009 | /* To get it right for both, we take the */ | |
| 1010 | /* minumum/maximum of the two. */ | |
| 1011 | # define MAX(x,y) ((x) > (y) ? (x) : (y)) | |
| 1012 | # define MIN(x,y) ((x) < (y) ? (x) : (y)) | |
| ed47971a LR |
1013 | # define DATASTART ((ptr_t) MIN(_data_start__, _bss_start__)) |
| 1014 | # define DATAEND ((ptr_t) MAX(_data_end__, _bss_end__)) | |
| 70f72767 TT |
1015 | # undef STACK_GRAN |
| 1016 | # define STACK_GRAN 0x10000 | |
| 1017 | # define HEURISTIC1 | |
| 1018 | # endif | |
| 1019 | # ifdef OS2 | |
| 1020 | # define OS_TYPE "OS2" | |
| 1021 | /* STACKBOTTOM and DATASTART are handled specially in */ | |
| 1022 | /* os_dep.c. OS2 actually has the right */ | |
| 1023 | /* system call! */ | |
| 1024 | # define DATAEND /* not needed */ | |
| abdbd4a8 | 1025 | # define USE_GENERIC_PUSH_REGS |
| 70f72767 TT |
1026 | # endif |
| 1027 | # ifdef MSWIN32 | |
| 1028 | # define OS_TYPE "MSWIN32" | |
| 1029 | /* STACKBOTTOM and DATASTART are handled specially in */ | |
| 1030 | /* os_dep.c. */ | |
| 1031 | # ifndef __WATCOMC__ | |
| 1032 | # define MPROTECT_VDB | |
| 1033 | # endif | |
| 1034 | # define DATAEND /* not needed */ | |
| 1035 | # endif | |
| abdbd4a8 BM |
1036 | # ifdef MSWINCE |
| 1037 | # define OS_TYPE "MSWINCE" | |
| 1038 | # define DATAEND /* not needed */ | |
| 1039 | # endif | |
| 70f72767 TT |
1040 | # ifdef DJGPP |
| 1041 | # define OS_TYPE "DJGPP" | |
| 1042 | # include "stubinfo.h" | |
| ed47971a | 1043 | extern int etext[]; |
| 70f72767 TT |
1044 | extern int _stklen; |
| 1045 | extern int __djgpp_stack_limit; | |
| ed47971a | 1046 | # define DATASTART ((ptr_t)((((word) (etext)) + 0x1ff) & ~0x1ff)) |
| 70f72767 TT |
1047 | /* # define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \ |
| 1048 | + _stklen)) */ | |
| 1049 | # define STACKBOTTOM ((ptr_t)((word) __djgpp_stack_limit + _stklen)) | |
| 1050 | /* This may not be right. */ | |
| 1051 | # endif | |
| 1052 | # ifdef OPENBSD | |
| 1053 | # define OS_TYPE "OPENBSD" | |
| 1054 | # endif | |
| 1055 | # ifdef FREEBSD | |
| 1056 | # define OS_TYPE "FREEBSD" | |
| f6d882d9 LR |
1057 | # ifndef GC_FREEBSD_THREADS |
| 1058 | # define MPROTECT_VDB | |
| 1059 | # endif | |
| 1060 | # define SIG_SUSPEND SIGUSR1 | |
| 1061 | # define SIG_THR_RESTART SIGUSR2 | |
| abdbd4a8 | 1062 | # define FREEBSD_STACKBOTTOM |
| 4c7726b1 BM |
1063 | # ifdef __ELF__ |
| 1064 | # define DYNAMIC_LOADING | |
| 1065 | # endif | |
| 3c55704e | 1066 | /* Handle unmapped hole i386*-*-freebsd[45]* may put between etext and edata. */ |
| ed47971a | 1067 | extern char etext[]; |
| 3c55704e LR |
1068 | extern char edata[]; |
| 1069 | extern char end[]; | |
| 1070 | # define NEED_FIND_LIMIT | |
| ed47971a | 1071 | # define DATASTART ((ptr_t)(etext)) |
| 3c55704e LR |
1072 | # define MIN(x,y) ((x) < (y) ? (x) : (y)) |
| 1073 | # define DATAEND (MIN (GC_find_limit (DATASTART, TRUE), DATASTART2)) | |
| 1074 | # define DATASTART2 ((ptr_t)(edata)) | |
| 1075 | # define DATAEND2 ((ptr_t)(end)) | |
| 70f72767 TT |
1076 | # endif |
| 1077 | # ifdef NETBSD | |
| 1078 | # define OS_TYPE "NETBSD" | |
| c71f2c06 BM |
1079 | # ifdef __ELF__ |
| 1080 | # define DYNAMIC_LOADING | |
| 1081 | # endif | |
| 70f72767 TT |
1082 | # endif |
| 1083 | # ifdef THREE86BSD | |
| 1084 | # define OS_TYPE "THREE86BSD" | |
| 1085 | # endif | |
| 1086 | # ifdef BSDI | |
| 1087 | # define OS_TYPE "BSDI" | |
| 1088 | # endif | |
| 79f777fd | 1089 | # if defined(OPENBSD) || defined(NETBSD) \ |
| 70f72767 TT |
1090 | || defined(THREE86BSD) || defined(BSDI) |
| 1091 | # define HEURISTIC2 | |
| ed47971a LR |
1092 | extern char etext[]; |
| 1093 | # define DATASTART ((ptr_t)(etext)) | |
| 70f72767 TT |
1094 | # endif |
| 1095 | # ifdef NEXT | |
| 1096 | # define OS_TYPE "NEXT" | |
| 1097 | # define DATASTART ((ptr_t) get_etext()) | |
| 1098 | # define STACKBOTTOM ((ptr_t)0xc0000000) | |
| 1099 | # define DATAEND /* not needed */ | |
| 1100 | # endif | |
| 1101 | # ifdef DOS4GW | |
| 1102 | # define OS_TYPE "DOS4GW" | |
| 1103 | extern long __nullarea; | |
| 1104 | extern char _end; | |
| 1105 | extern char *_STACKTOP; | |
| 1106 | /* Depending on calling conventions Watcom C either precedes | |
| 1107 | or does not precedes with undescore names of C-variables. | |
| 1108 | Make sure startup code variables always have the same names. */ | |
| 1109 | #pragma aux __nullarea "*"; | |
| 1110 | #pragma aux _end "*"; | |
| 1111 | # define STACKBOTTOM ((ptr_t) _STACKTOP) | |
| 1112 | /* confused? me too. */ | |
| 1113 | # define DATASTART ((ptr_t) &__nullarea) | |
| 1114 | # define DATAEND ((ptr_t) &_end) | |
| 1115 | # endif | |
| 5a2586cf TT |
1116 | # ifdef HURD |
| 1117 | # define OS_TYPE "HURD" | |
| 1118 | # define STACK_GROWS_DOWN | |
| 1119 | # define HEURISTIC2 | |
| ed47971a LR |
1120 | extern int __data_start[]; |
| 1121 | # define DATASTART ( (ptr_t) (__data_start)) | |
| 1122 | extern int _end[]; | |
| 1123 | # define DATAEND ( (ptr_t) (_end)) | |
| 5a2586cf TT |
1124 | /* # define MPROTECT_VDB Not quite working yet? */ |
| 1125 | # define DYNAMIC_LOADING | |
| 1126 | # endif | |
| 70f72767 TT |
1127 | # endif |
| 1128 | ||
| 1129 | # ifdef NS32K | |
| 1130 | # define MACH_TYPE "NS32K" | |
| 1131 | # define ALIGNMENT 4 | |
| 1132 | extern char **environ; | |
| 1133 | # define DATASTART ((ptr_t)(&environ)) | |
| 1134 | /* hideous kludge: environ is the first */ | |
| 1135 | /* word in crt0.o, and delimits the start */ | |
| 1136 | /* of the data segment, no matter which */ | |
| 1137 | /* ld options were passed through. */ | |
| 1138 | # define STACKBOTTOM ((ptr_t) 0xfffff000) /* for Encore */ | |
| 1139 | # endif | |
| 1140 | ||
| 1141 | # ifdef MIPS | |
| 1142 | # define MACH_TYPE "MIPS" | |
| 56293c2b BM |
1143 | # ifdef LINUX |
| 1144 | /* This was developed for a linuxce style platform. Probably */ | |
| 1145 | /* needs to be tweaked for workstation class machines. */ | |
| 1146 | # define OS_TYPE "LINUX" | |
| f3e83dc2 L |
1147 | # define DYNAMIC_LOADING |
| 1148 | extern int _end[]; | |
| 1149 | # define DATAEND (_end) | |
| ed47971a LR |
1150 | extern int __data_start[]; |
| 1151 | # define DATASTART ((ptr_t)(__data_start)) | |
| 56293c2b | 1152 | # define ALIGNMENT 4 |
| 5a2586cf | 1153 | # define USE_GENERIC_PUSH_REGS |
| f3e83dc2 | 1154 | # define LINUX_STACKBOTTOM |
| 56293c2b | 1155 | # endif /* Linux */ |
| 79f777fd BM |
1156 | # ifdef EWS4800 |
| 1157 | # define HEURISTIC2 | |
| 1158 | # if defined(_MIPS_SZPTR) && (_MIPS_SZPTR == 64) | |
| 1159 | extern int _fdata[], _end[]; | |
| 1160 | # define DATASTART ((ptr_t)_fdata) | |
| 1161 | # define DATAEND ((ptr_t)_end) | |
| 1162 | # define CPP_WORDSZ _MIPS_SZPTR | |
| 1163 | # define ALIGNMENT (_MIPS_SZPTR/8) | |
| 1164 | # else | |
| ed47971a LR |
1165 | extern int etext[], edata[], end[]; |
| 1166 | extern int _DYNAMIC_LINKING[], _gp[]; | |
| 1167 | # define DATASTART ((ptr_t)((((word)etext + 0x3ffff) & ~0x3ffff) \ | |
| 1168 | + ((word)etext & 0xffff))) | |
| 1169 | # define DATAEND (edata) | |
| 1170 | # define DATASTART2 (_DYNAMIC_LINKING \ | |
| 1171 | ? (ptr_t)(((word)_gp + 0x8000 + 0x3ffff) & ~0x3ffff) \ | |
| 1172 | : (ptr_t)edata) | |
| 1173 | # define DATAEND2 (end) | |
| 79f777fd BM |
1174 | # define ALIGNMENT 4 |
| 1175 | # endif | |
| 1176 | # define OS_TYPE "EWS4800" | |
| 1177 | # define USE_GENERIC_PUSH_REGS 1 | |
| 1178 | # endif | |
| 70f72767 | 1179 | # ifdef ULTRIX |
| 56293c2b BM |
1180 | # define HEURISTIC2 |
| 1181 | # define DATASTART (ptr_t)0x10000000 | |
| 1182 | /* Could probably be slightly higher since */ | |
| 1183 | /* startup code allocates lots of stuff. */ | |
| 70f72767 TT |
1184 | # define OS_TYPE "ULTRIX" |
| 1185 | # define ALIGNMENT 4 | |
| 1186 | # endif | |
| 1187 | # ifdef RISCOS | |
| 56293c2b BM |
1188 | # define HEURISTIC2 |
| 1189 | # define DATASTART (ptr_t)0x10000000 | |
| 70f72767 TT |
1190 | # define OS_TYPE "RISCOS" |
| 1191 | # define ALIGNMENT 4 /* Required by hardware */ | |
| 1192 | # endif | |
| 1193 | # ifdef IRIX5 | |
| 56293c2b | 1194 | # define HEURISTIC2 |
| ed47971a LR |
1195 | extern int _fdata[]; |
| 1196 | # define DATASTART ((ptr_t)(_fdata)) | |
| 56293c2b BM |
1197 | # ifdef USE_MMAP |
| 1198 | # define HEAP_START (ptr_t)0x30000000 | |
| 1199 | # else | |
| 1200 | # define HEAP_START DATASTART | |
| 1201 | # endif | |
| 1202 | /* Lowest plausible heap address. */ | |
| 1203 | /* In the MMAP case, we map there. */ | |
| 1204 | /* In either case it is used to identify */ | |
| 1205 | /* heap sections so they're not */ | |
| 1206 | /* considered as roots. */ | |
| 70f72767 TT |
1207 | # define OS_TYPE "IRIX5" |
| 1208 | # define MPROTECT_VDB | |
| 1209 | # ifdef _MIPS_SZPTR | |
| 1210 | # define CPP_WORDSZ _MIPS_SZPTR | |
| 1211 | # define ALIGNMENT (_MIPS_SZPTR/8) | |
| 1212 | # if CPP_WORDSZ != 64 | |
| 1213 | # define ALIGN_DOUBLE | |
| 1214 | # endif | |
| 1215 | # else | |
| 1216 | # define ALIGNMENT 4 | |
| 1217 | # define ALIGN_DOUBLE | |
| 1218 | # endif | |
| 1219 | # define DYNAMIC_LOADING | |
| 1220 | # endif | |
| abdbd4a8 BM |
1221 | # ifdef MSWINCE |
| 1222 | # define OS_TYPE "MSWINCE" | |
| 1223 | # define ALIGNMENT 4 | |
| 1224 | # define DATAEND /* not needed */ | |
| 1225 | # endif | |
| 1226 | # if defined(NETBSD) | |
| abdbd4a8 | 1227 | # define OS_TYPE "NETBSD" |
| 179a9caf | 1228 | # define ALIGNMENT 4 |
| abdbd4a8 | 1229 | # define HEURISTIC2 |
| 5a2586cf | 1230 | # define USE_GENERIC_PUSH_REGS |
| 179a9caf JT |
1231 | extern int _fdata[]; |
| 1232 | # define DATASTART ((ptr_t)(_fdata)) | |
| 1233 | extern int _end[]; | |
| 1234 | # define DATAEND ((ptr_t)(_end)) | |
| 1235 | # define DYNAMIC_LOADING | |
| abdbd4a8 | 1236 | # endif |
| 70f72767 TT |
1237 | # endif |
| 1238 | ||
| 1239 | # ifdef RS6000 | |
| 1240 | # define MACH_TYPE "RS6000" | |
| 6cb3421f DE |
1241 | # ifdef __64BIT__ |
| 1242 | # define ALIGNMENT 8 | |
| 1243 | # define CPP_WORDSZ 64 | |
| 1244 | # else | |
| 1245 | # define ALIGNMENT 4 | |
| 1246 | # define CPP_WORDSZ 32 | |
| 1247 | # endif | |
| ed47971a LR |
1248 | extern int _data[], _end[]; |
| 1249 | # define DATASTART ((ptr_t)((ulong)_data)) | |
| 1250 | # define DATAEND ((ptr_t)((ulong)_end)) | |
| 70f72767 TT |
1251 | extern int errno; |
| 1252 | # define STACKBOTTOM ((ptr_t)((ulong)&errno)) | |
| 6cb3421f | 1253 | # define USE_GENERIC_PUSH_REGS |
| 70f72767 TT |
1254 | # define DYNAMIC_LOADING |
| 1255 | /* For really old versions of AIX, this may have to be removed. */ | |
| 1256 | # endif | |
| 1257 | ||
| 1258 | # ifdef HP_PA | |
| 1259 | # define MACH_TYPE "HP_PA" | |
| 56293c2b BM |
1260 | # ifdef __LP64__ |
| 1261 | # define CPP_WORDSZ 64 | |
| 1262 | # define ALIGNMENT 8 | |
| 1263 | # else | |
| 1264 | # define CPP_WORDSZ 32 | |
| 1265 | # define ALIGNMENT 4 | |
| 1266 | # define ALIGN_DOUBLE | |
| 1267 | # endif | |
| 4c7726b1 | 1268 | # if !defined(GC_HPUX_THREADS) && !defined(GC_LINUX_THREADS) |
| abdbd4a8 BM |
1269 | # ifndef LINUX /* For now. */ |
| 1270 | # define MPROTECT_VDB | |
| 1271 | # endif | |
| 1272 | # else | |
| 1273 | # define GENERIC_COMPARE_AND_SWAP | |
| 1274 | /* No compare-and-swap instruction. Use pthread mutexes */ | |
| 1275 | /* when we absolutely have to. */ | |
| 1276 | # ifdef PARALLEL_MARK | |
| 1277 | # define USE_MARK_BYTES | |
| 1278 | /* Minimize compare-and-swap usage. */ | |
| 1279 | # endif | |
| 1280 | # endif | |
| 1281 | # define STACK_GROWS_UP | |
| 1282 | # ifdef HPUX | |
| 4c7726b1 | 1283 | # define OS_TYPE "HPUX" |
| ed47971a LR |
1284 | extern int __data_start[]; |
| 1285 | # define DATASTART ((ptr_t)(__data_start)) | |
| abdbd4a8 | 1286 | # if 0 |
| 70f72767 TT |
1287 | /* The following appears to work for 7xx systems running HP/UX */ |
| 1288 | /* 9.xx Furthermore, it might result in much faster */ | |
| 1289 | /* collections than HEURISTIC2, which may involve scanning */ | |
| 1290 | /* segments that directly precede the stack. It is not the */ | |
| 1291 | /* default, since it may not work on older machine/OS */ | |
| 1292 | /* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */ | |
| 1293 | /* this.) */ | |
| 1294 | # define STACKBOTTOM ((ptr_t) 0x7b033000) /* from /etc/conf/h/param.h */ | |
| abdbd4a8 | 1295 | # else |
| 179977c1 | 1296 | /* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */ |
| abdbd4a8 BM |
1297 | /* to this. Note that the GC must be initialized before the */ |
| 1298 | /* first putenv call. */ | |
| 179977c1 BM |
1299 | extern char ** environ; |
| 1300 | # define STACKBOTTOM ((ptr_t)environ) | |
| abdbd4a8 BM |
1301 | # endif |
| 1302 | # define DYNAMIC_LOADING | |
| 1303 | # include <unistd.h> | |
| 1304 | # define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) | |
| 1305 | # ifndef __GNUC__ | |
| 1306 | # define PREFETCH(x) { \ | |
| 1307 | register long addr = (long)(x); \ | |
| 1308 | (void) _asm ("LDW", 0, 0, addr, 0); \ | |
| 1309 | } | |
| 1310 | # endif | |
| 1311 | # endif /* HPUX */ | |
| 1312 | # ifdef LINUX | |
| 1313 | # define OS_TYPE "LINUX" | |
| 1314 | # define LINUX_STACKBOTTOM | |
| 1315 | # define DYNAMIC_LOADING | |
| 1316 | # define LINUX_DATA_START | |
| ed47971a LR |
1317 | extern int _end[]; |
| 1318 | # define DATAEND (_end) | |
| abdbd4a8 BM |
1319 | # endif /* LINUX */ |
| 1320 | # endif /* HP_PA */ | |
| 70f72767 TT |
1321 | |
| 1322 | # ifdef ALPHA | |
| 1323 | # define MACH_TYPE "ALPHA" | |
| 1324 | # define ALIGNMENT 8 | |
| abdbd4a8 BM |
1325 | # ifdef NETBSD |
| 1326 | # define OS_TYPE "NETBSD" | |
| 1327 | # define HEURISTIC2 | |
| 1328 | # define DATASTART GC_data_start | |
| 1329 | # define ELFCLASS32 32 | |
| 1330 | # define ELFCLASS64 64 | |
| 1331 | # define ELF_CLASS ELFCLASS64 | |
| 1332 | # define CPP_WORDSZ 64 | |
| 1333 | # define DYNAMIC_LOADING | |
| 1334 | # endif | |
| 4c7726b1 BM |
1335 | # ifdef OPENBSD |
| 1336 | # define OS_TYPE "OPENBSD" | |
| 1337 | # define HEURISTIC2 | |
| 1338 | # define CPP_WORDSZ 64 | |
| 1339 | # ifdef __ELF__ /* since OpenBSD/Alpha 2.9 */ | |
| 1340 | # define DATASTART GC_data_start | |
| 1341 | # define ELFCLASS32 32 | |
| 1342 | # define ELFCLASS64 64 | |
| 1343 | # define ELF_CLASS ELFCLASS64 | |
| 1344 | # else /* ECOFF, until OpenBSD/Alpha 2.7 */ | |
| 1345 | # define DATASTART ((ptr_t) 0x140000000) | |
| 1346 | # endif | |
| 1347 | # endif | |
| c0561434 LR |
1348 | # ifdef FREEBSD |
| 1349 | # define OS_TYPE "FREEBSD" | |
| 1350 | /* MPROTECT_VDB is not yet supported at all on FreeBSD/alpha. */ | |
| 1351 | # define SIG_SUSPEND SIGUSR1 | |
| 1352 | # define SIG_THR_RESTART SIGUSR2 | |
| 1353 | # define FREEBSD_STACKBOTTOM | |
| 1354 | # ifdef __ELF__ | |
| 1355 | # define DYNAMIC_LOADING | |
| 1356 | # endif | |
| 1357 | /* Handle unmapped hole alpha*-*-freebsd[45]* puts between etext and edata. */ | |
| ed47971a LR |
1358 | extern char etext[]; |
| 1359 | extern char edata[]; | |
| 1360 | extern char end[]; | |
| c0561434 | 1361 | # define NEED_FIND_LIMIT |
| ed47971a | 1362 | # define DATASTART ((ptr_t)(etext)) |
| c0561434 | 1363 | # define DATAEND (GC_find_limit (DATASTART, TRUE)) |
| ed47971a LR |
1364 | # define DATASTART2 ((ptr_t)(edata)) |
| 1365 | # define DATAEND2 ((ptr_t)(end)) | |
| c0561434 LR |
1366 | # define CPP_WORDSZ 64 |
| 1367 | # endif | |
| 70f72767 TT |
1368 | # ifdef OSF1 |
| 1369 | # define OS_TYPE "OSF1" | |
| 1370 | # define DATASTART ((ptr_t) 0x140000000) | |
| ed47971a LR |
1371 | extern int _end[]; |
| 1372 | # define DATAEND ((ptr_t) _end) | |
| abdbd4a8 BM |
1373 | extern char ** environ; |
| 1374 | /* round up from the value of environ to the nearest page boundary */ | |
| 1375 | /* Probably breaks if putenv is called before collector */ | |
| 1376 | /* initialization. */ | |
| 1377 | # define STACKBOTTOM ((ptr_t)(((word)(environ) | (getpagesize()-1))+1)) | |
| 1378 | /* # define HEURISTIC2 */ | |
| 70f72767 TT |
1379 | /* Normally HEURISTIC2 is too conervative, since */ |
| 1380 | /* the text segment immediately follows the stack. */ | |
| 1381 | /* Hence we give an upper pound. */ | |
| abdbd4a8 | 1382 | /* This is currently unused, since we disabled HEURISTIC2 */ |
| ed47971a LR |
1383 | extern int __start[]; |
| 1384 | # define HEURISTIC2_LIMIT ((ptr_t)((word)(__start) & ~(getpagesize()-1))) | |
| 70f72767 TT |
1385 | # define CPP_WORDSZ 64 |
| 1386 | # define MPROTECT_VDB | |
| 1387 | # define DYNAMIC_LOADING | |
| 1388 | # endif | |
| 1389 | # ifdef LINUX | |
| 1390 | # define OS_TYPE "LINUX" | |
| 1391 | # define CPP_WORDSZ 64 | |
| 1392 | # define STACKBOTTOM ((ptr_t) 0x120000000) | |
| 1393 | # ifdef __ELF__ | |
| abdbd4a8 BM |
1394 | # define SEARCH_FOR_DATA_START |
| 1395 | # define DATASTART GC_data_start | |
| 85f29b3b | 1396 | # define DYNAMIC_LOADING |
| 70f72767 TT |
1397 | # else |
| 1398 | # define DATASTART ((ptr_t) 0x140000000) | |
| 1399 | # endif | |
| ed47971a LR |
1400 | extern int _end[]; |
| 1401 | # define DATAEND (_end) | |
| 70f72767 TT |
1402 | # define MPROTECT_VDB |
| 1403 | /* Has only been superficially tested. May not */ | |
| 1404 | /* work on all versions. */ | |
| 1405 | # endif | |
| 1406 | # endif | |
| 1407 | ||
| 56293c2b BM |
1408 | # ifdef IA64 |
| 1409 | # define MACH_TYPE "IA64" | |
| 56293c2b | 1410 | # define USE_GENERIC_PUSH_REGS |
| abdbd4a8 BM |
1411 | /* We need to get preserved registers in addition to register */ |
| 1412 | /* windows. That's easiest to do with setjmp. */ | |
| 1413 | # ifdef PARALLEL_MARK | |
| 1414 | # define USE_MARK_BYTES | |
| 1415 | /* Compare-and-exchange is too expensive to use for */ | |
| 1416 | /* setting mark bits. */ | |
| 1417 | # endif | |
| 56293c2b | 1418 | # ifdef HPUX |
| 4c7726b1 BM |
1419 | # ifdef _ILP32 |
| 1420 | # define CPP_WORDSZ 32 | |
| 1421 | # define ALIGN_DOUBLE | |
| 1422 | /* Requires 8 byte alignment for malloc */ | |
| 1423 | # define ALIGNMENT 4 | |
| 1424 | # else | |
| 1425 | # ifndef _LP64 | |
| 1426 | ---> unknown ABI | |
| 1427 | # endif | |
| 1428 | # define CPP_WORDSZ 64 | |
| 1429 | # define ALIGN_DOUBLE | |
| 1430 | /* Requires 16 byte alignment for malloc */ | |
| 1431 | # define ALIGNMENT 8 | |
| 1432 | # endif | |
| 1433 | # define OS_TYPE "HPUX" | |
| ed47971a LR |
1434 | extern int __data_start[]; |
| 1435 | # define DATASTART ((ptr_t)(__data_start)) | |
| 4c7726b1 BM |
1436 | /* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */ |
| 1437 | /* to this. Note that the GC must be initialized before the */ | |
| 1438 | /* first putenv call. */ | |
| 1439 | extern char ** environ; | |
| 1440 | # define STACKBOTTOM ((ptr_t)environ) | |
| 1441 | # define DYNAMIC_LOADING | |
| 1442 | # include <unistd.h> | |
| 1443 | # define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) | |
| 1444 | /* The following was empirically determined, and is probably */ | |
| 1445 | /* not very robust. */ | |
| 1446 | /* Note that the backing store base seems to be at a nice */ | |
| 1447 | /* address minus one page. */ | |
| 1448 | # define BACKING_STORE_DISPLACEMENT 0x1000000 | |
| 1449 | # define BACKING_STORE_ALIGNMENT 0x1000 | |
| 1450 | # define BACKING_STORE_BASE \ | |
| 1451 | (ptr_t)(((word)GC_stackbottom - BACKING_STORE_DISPLACEMENT - 1) \ | |
| 1452 | & ~(BACKING_STORE_ALIGNMENT - 1)) | |
| 56293c2b BM |
1453 | # endif |
| 1454 | # ifdef LINUX | |
| 4c7726b1 BM |
1455 | # define CPP_WORDSZ 64 |
| 1456 | # define ALIGN_DOUBLE | |
| 1457 | /* Requires 16 byte alignment for malloc */ | |
| 1458 | # define ALIGNMENT 8 | |
| 56293c2b | 1459 | # define OS_TYPE "LINUX" |
| abdbd4a8 BM |
1460 | /* The following works on NUE and older kernels: */ |
| 1461 | /* # define STACKBOTTOM ((ptr_t) 0xa000000000000000l) */ | |
| 1462 | /* This does not work on NUE: */ | |
| 1463 | # define LINUX_STACKBOTTOM | |
| 56293c2b | 1464 | /* We also need the base address of the register stack */ |
| abdbd4a8 BM |
1465 | /* backing store. This is computed in */ |
| 1466 | /* GC_linux_register_stack_base based on the following */ | |
| 1467 | /* constants: */ | |
| 1468 | # define BACKING_STORE_ALIGNMENT 0x100000 | |
| 1469 | # define BACKING_STORE_DISPLACEMENT 0x80000000 | |
| 1470 | extern char * GC_register_stackbottom; | |
| 1471 | # define BACKING_STORE_BASE ((ptr_t)GC_register_stackbottom) | |
| 1472 | # define SEARCH_FOR_DATA_START | |
| 1473 | # define DATASTART GC_data_start | |
| 79f777fd BM |
1474 | # ifdef __GNUC__ |
| 1475 | # define DYNAMIC_LOADING | |
| 1476 | # else | |
| 1477 | /* In the Intel compiler environment, we seem to end up with */ | |
| 1478 | /* statically linked executables and an undefined reference */ | |
| 1479 | /* to _DYNAMIC */ | |
| 1480 | # endif | |
| 56293c2b BM |
1481 | # define MPROTECT_VDB |
| 1482 | /* Requires Linux 2.3.47 or later. */ | |
| ed47971a LR |
1483 | extern int _end[]; |
| 1484 | # define DATAEND (_end) | |
| abdbd4a8 BM |
1485 | # ifdef __GNUC__ |
| 1486 | # define PREFETCH(x) \ | |
| 1487 | __asm__ (" lfetch [%0]": : "r"((void *)(x))) | |
| 1488 | # define PREFETCH_FOR_WRITE(x) \ | |
| 1489 | __asm__ (" lfetch.excl [%0]": : "r"((void *)(x))) | |
| 1490 | # define CLEAR_DOUBLE(x) \ | |
| 1491 | __asm__ (" stf.spill [%0]=f0": : "r"((void *)(x))) | |
| 1492 | # endif | |
| 56293c2b BM |
1493 | # endif |
| 1494 | # endif | |
| 1495 | ||
| 70f72767 TT |
1496 | # ifdef M88K |
| 1497 | # define MACH_TYPE "M88K" | |
| 1498 | # define ALIGNMENT 4 | |
| 1499 | # define ALIGN_DOUBLE | |
| ed47971a | 1500 | extern int etext[]; |
| 70f72767 TT |
1501 | # ifdef CX_UX |
| 1502 | # define OS_TYPE "CX_UX" | |
| ed47971a | 1503 | # define DATASTART ((((word)etext + 0x3fffff) & ~0x3fffff) + 0x10000) |
| 70f72767 TT |
1504 | # endif |
| 1505 | # ifdef DGUX | |
| 1506 | # define OS_TYPE "DGUX" | |
| 1507 | extern char * GC_SysVGetDataStart(); | |
| ed47971a | 1508 | # define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, etext) |
| 70f72767 TT |
1509 | # endif |
| 1510 | # define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */ | |
| 1511 | # endif | |
| 1512 | ||
| 1513 | # ifdef S370 | |
| 1514 | # define MACH_TYPE "S370" | |
| 70f72767 | 1515 | # define ALIGNMENT 4 /* Required by hardware */ |
| abdbd4a8 BM |
1516 | # define USE_GENERIC_PUSH_REGS |
| 1517 | # ifdef UTS4 | |
| 1518 | # define OS_TYPE "UTS4" | |
| ed47971a LR |
1519 | extern int etext[]; |
| 1520 | extern int _etext[]; | |
| 1521 | extern int _end[]; | |
| 70f72767 | 1522 | extern char * GC_SysVGetDataStart(); |
| ed47971a LR |
1523 | # define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, _etext) |
| 1524 | # define DATAEND (_end) | |
| 70f72767 | 1525 | # define HEURISTIC2 |
| abdbd4a8 | 1526 | # endif |
| 10a197ee UW |
1527 | # endif |
| 1528 | ||
| 1529 | # ifdef S390 | |
| 1530 | # define MACH_TYPE "S390" | |
| 1531 | # define USE_GENERIC_PUSH_REGS | |
| 1532 | # ifndef __s390x__ | |
| 1533 | # define ALIGNMENT 4 | |
| 1534 | # define CPP_WORDSZ 32 | |
| 1535 | # else | |
| 1536 | # define ALIGNMENT 8 | |
| 1537 | # define CPP_WORDSZ 64 | |
| 1538 | # define HBLKSIZE 4096 | |
| 1539 | # endif | |
| abdbd4a8 BM |
1540 | # ifdef LINUX |
| 1541 | # define OS_TYPE "LINUX" | |
| 10a197ee | 1542 | # define LINUX_STACKBOTTOM |
| abdbd4a8 | 1543 | # define DYNAMIC_LOADING |
| ed47971a LR |
1544 | extern int __data_start[]; |
| 1545 | # define DATASTART ((ptr_t)(__data_start)) | |
| 10a197ee UW |
1546 | extern int _end[]; |
| 1547 | # define DATAEND (_end) | |
| 1548 | # define CACHE_LINE_SIZE 256 | |
| 1549 | # define GETPAGESIZE() 4096 | |
| abdbd4a8 | 1550 | # endif |
| 70f72767 TT |
1551 | # endif |
| 1552 | ||
| 56293c2b BM |
1553 | # if defined(PJ) |
| 1554 | # define ALIGNMENT 4 | |
| ed47971a LR |
1555 | extern int _etext[]; |
| 1556 | # define DATASTART ((ptr_t)(_etext)) | |
| 56293c2b BM |
1557 | # define HEURISTIC1 |
| 1558 | # endif | |
| 1559 | ||
| 1560 | # ifdef ARM32 | |
| 1561 | # define CPP_WORDSZ 32 | |
| 1562 | # define MACH_TYPE "ARM32" | |
| 1563 | # define ALIGNMENT 4 | |
| 1564 | # ifdef NETBSD | |
| 1565 | # define OS_TYPE "NETBSD" | |
| 1566 | # define HEURISTIC2 | |
| ed47971a LR |
1567 | extern char etext[]; |
| 1568 | # define DATASTART ((ptr_t)(etext)) | |
| 56293c2b BM |
1569 | # define USE_GENERIC_PUSH_REGS |
| 1570 | # endif | |
| 1571 | # ifdef LINUX | |
| 1572 | # define OS_TYPE "LINUX" | |
| 1573 | # define HEURISTIC1 | |
| 1574 | # undef STACK_GRAN | |
| 1575 | # define STACK_GRAN 0x10000000 | |
| 1576 | # define USE_GENERIC_PUSH_REGS | |
| 1577 | # ifdef __ELF__ | |
| 1578 | # define DYNAMIC_LOADING | |
| 1579 | # include <features.h> | |
| 1580 | # if defined(__GLIBC__) && __GLIBC__ >= 2 | |
| 1581 | # define LINUX_DATA_START | |
| 1582 | # else | |
| 1583 | extern char **__environ; | |
| 1584 | # define DATASTART ((ptr_t)(&__environ)) | |
| 1585 | /* hideous kludge: __environ is the first */ | |
| 1586 | /* word in crt0.o, and delimits the start */ | |
| 1587 | /* of the data segment, no matter which */ | |
| 1588 | /* ld options were passed through. */ | |
| 1589 | /* We could use _etext instead, but that */ | |
| 1590 | /* would include .rodata, which may */ | |
| 1591 | /* contain large read-only data tables */ | |
| 1592 | /* that we'd rather not scan. */ | |
| 1593 | # endif | |
| ed47971a LR |
1594 | extern int _end[]; |
| 1595 | # define DATAEND (_end) | |
| 56293c2b | 1596 | # else |
| ed47971a LR |
1597 | extern int etext[]; |
| 1598 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| 56293c2b BM |
1599 | # endif |
| 1600 | # endif | |
| abdbd4a8 BM |
1601 | # ifdef MSWINCE |
| 1602 | # define OS_TYPE "MSWINCE" | |
| 1603 | # define DATAEND /* not needed */ | |
| 1604 | # endif | |
| b6459d9a AG |
1605 | # ifdef NOSYS |
| 1606 | /* __data_start is usually defined in the target linker script. */ | |
| ed47971a LR |
1607 | extern int __data_start[]; |
| 1608 | # define DATASTART (ptr_t)(__data_start) | |
| b6459d9a AG |
1609 | # define USE_GENERIC_PUSH_REGS |
| 1610 | /* __stack_base__ is set in newlib/libc/sys/arm/crt0.S */ | |
| 1611 | extern void *__stack_base__; | |
| 1612 | # define STACKBOTTOM ((ptr_t) (__stack_base__)) | |
| 1613 | # endif | |
| 56293c2b BM |
1614 | #endif |
| 1615 | ||
| abdbd4a8 BM |
1616 | # ifdef SH |
| 1617 | # define MACH_TYPE "SH" | |
| 1618 | # define ALIGNMENT 4 | |
| 1619 | # ifdef MSWINCE | |
| 1620 | # define OS_TYPE "MSWINCE" | |
| 1621 | # define DATAEND /* not needed */ | |
| 1622 | # endif | |
| 1623 | # ifdef LINUX | |
| 1624 | # define OS_TYPE "LINUX" | |
| 1625 | # define STACKBOTTOM ((ptr_t) 0x7c000000) | |
| 1626 | # define USE_GENERIC_PUSH_REGS | |
| 1627 | # define DYNAMIC_LOADING | |
| 1628 | # define LINUX_DATA_START | |
| ed47971a LR |
1629 | extern int _end[]; |
| 1630 | # define DATAEND (_end) | |
| abdbd4a8 BM |
1631 | # endif |
| 1632 | # endif | |
| 1633 | ||
| 1634 | # ifdef SH4 | |
| 1635 | # define MACH_TYPE "SH4" | |
| 1636 | # define OS_TYPE "MSWINCE" | |
| 1637 | # define ALIGNMENT 4 | |
| 1638 | # define DATAEND /* not needed */ | |
| 1639 | # endif | |
| 1640 | ||
| 48528b67 BT |
1641 | # ifdef X86_64 |
| 1642 | # define MACH_TYPE "X86_64" | |
| 1643 | # define ALIGNMENT 8 | |
| 1644 | # define CPP_WORDSZ 64 | |
| 1645 | # define CACHE_LINE_SIZE 64 | |
| 1646 | # define USE_GENERIC_PUSH_REGS | |
| 48528b67 BT |
1647 | # ifdef LINUX |
| 1648 | # define OS_TYPE "LINUX" | |
| 1649 | # define LINUX_STACKBOTTOM | |
| 1650 | # if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC) | |
| 1651 | # define MPROTECT_VDB | |
| 1652 | # else | |
| 1653 | /* We seem to get random errors in incremental mode, */ | |
| 1654 | /* possibly because Linux threads is itself a malloc client */ | |
| 1655 | /* and can't deal with the signals. */ | |
| 1656 | # endif | |
| 1657 | # ifdef __ELF__ | |
| 1658 | # define DYNAMIC_LOADING | |
| 1659 | # ifdef UNDEFINED /* includes ro data */ | |
| 1660 | extern int _etext[]; | |
| 1661 | # define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff)) | |
| 1662 | # endif | |
| 1663 | # include <features.h> | |
| 1664 | # define LINUX_DATA_START | |
| 1665 | extern int _end[]; | |
| 1666 | # define DATAEND (_end) | |
| 1667 | # else | |
| 1668 | extern int etext[]; | |
| 1669 | # define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) | |
| 1670 | # endif | |
| 1671 | # define PREFETCH(x) \ | |
| 1672 | __asm__ __volatile__ (" prefetch %0": : "m"(*(char *)(x))) | |
| 1673 | # define PREFETCH_FOR_WRITE(x) \ | |
| 1674 | __asm__ __volatile__ (" prefetchw %0": : "m"(*(char *)(x))) | |
| 1675 | # endif | |
| 1676 | # endif | |
| 1677 | ||
| 56293c2b BM |
1678 | #ifdef LINUX_DATA_START |
| 1679 | /* Some Linux distributions arrange to define __data_start. Some */ | |
| 1680 | /* define data_start as a weak symbol. The latter is technically */ | |
| 1681 | /* broken, since the user program may define data_start, in which */ | |
| 1682 | /* case we lose. Nonetheless, we try both, prefering __data_start. */ | |
| 1683 | /* We assume gcc. */ | |
| 1684 | # pragma weak __data_start | |
| ed47971a | 1685 | extern int __data_start[]; |
| 56293c2b | 1686 | # pragma weak data_start |
| ed47971a LR |
1687 | extern int data_start[]; |
| 1688 | # define DATASTART ((ptr_t)(__data_start != 0? __data_start : data_start)) | |
| 56293c2b BM |
1689 | #endif |
| 1690 | ||
| abdbd4a8 BM |
1691 | #if defined(LINUX) && defined(REDIRECT_MALLOC) |
| 1692 | /* Rld appears to allocate some memory with its own allocator, and */ | |
| 1693 | /* some through malloc, which might be redirected. To make this */ | |
| 1694 | /* work with collectable memory, we have to scan memory allocated */ | |
| 1695 | /* by rld's internal malloc. */ | |
| 1696 | # define USE_PROC_FOR_LIBRARIES | |
| 1697 | #endif | |
| 1698 | ||
| 70f72767 TT |
1699 | # ifndef STACK_GROWS_UP |
| 1700 | # define STACK_GROWS_DOWN | |
| 1701 | # endif | |
| 1702 | ||
| 1703 | # ifndef CPP_WORDSZ | |
| 1704 | # define CPP_WORDSZ 32 | |
| 1705 | # endif | |
| 1706 | ||
| 1707 | # ifndef OS_TYPE | |
| 1708 | # define OS_TYPE "" | |
| 1709 | # endif | |
| 1710 | ||
| 1711 | # ifndef DATAEND | |
| ed47971a LR |
1712 | extern int end[]; |
| 1713 | # define DATAEND (end) | |
| 70f72767 TT |
1714 | # endif |
| 1715 | ||
| 1716 | # if defined(SVR4) && !defined(GETPAGESIZE) | |
| 1717 | # include <unistd.h> | |
| 1718 | # define GETPAGESIZE() sysconf(_SC_PAGESIZE) | |
| 1719 | # endif | |
| 1720 | ||
| 1721 | # ifndef GETPAGESIZE | |
| 1722 | # if defined(SUNOS5) || defined(IRIX5) | |
| 1723 | # include <unistd.h> | |
| 1724 | # endif | |
| 1725 | # define GETPAGESIZE() getpagesize() | |
| 1726 | # endif | |
| 1727 | ||
| 1728 | # if defined(SUNOS5) || defined(DRSNX) || defined(UTS4) | |
| 1729 | /* OS has SVR4 generic features. Probably others also qualify. */ | |
| 1730 | # define SVR4 | |
| 1731 | # endif | |
| 1732 | ||
| 1733 | # if defined(SUNOS5) || defined(DRSNX) | |
| 1734 | /* OS has SUNOS5 style semi-undocumented interface to dynamic */ | |
| 1735 | /* loader. */ | |
| 1736 | # define SUNOS5DL | |
| 1737 | /* OS has SUNOS5 style signal handlers. */ | |
| 1738 | # define SUNOS5SIGS | |
| 1739 | # endif | |
| 1740 | ||
| 56293c2b BM |
1741 | # if defined(HPUX) |
| 1742 | # define SUNOS5SIGS | |
| 1743 | # endif | |
| 1744 | ||
| abdbd4a8 BM |
1745 | # if defined(SVR4) || defined(LINUX) || defined(IRIX) || defined(HPUX) \ |
| 1746 | || defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \ | |
| 6cb3421f | 1747 | || defined(BSD) || defined(_AIX) || defined(MACOSX) || defined(OSF1) |
| abdbd4a8 BM |
1748 | # define UNIX_LIKE /* Basic Unix-like system calls work. */ |
| 1749 | # endif | |
| 1750 | ||
| 70f72767 TT |
1751 | # if CPP_WORDSZ != 32 && CPP_WORDSZ != 64 |
| 1752 | -> bad word size | |
| 1753 | # endif | |
| 1754 | ||
| 1755 | # ifdef PCR | |
| 1756 | # undef DYNAMIC_LOADING | |
| 1757 | # undef STACKBOTTOM | |
| 1758 | # undef HEURISTIC1 | |
| 1759 | # undef HEURISTIC2 | |
| 1760 | # undef PROC_VDB | |
| 1761 | # undef MPROTECT_VDB | |
| 1762 | # define PCR_VDB | |
| 1763 | # endif | |
| 1764 | ||
| 1765 | # ifdef SRC_M3 | |
| 1766 | /* Postponed for now. */ | |
| 1767 | # undef PROC_VDB | |
| 1768 | # undef MPROTECT_VDB | |
| 1769 | # endif | |
| 1770 | ||
| 1771 | # ifdef SMALL_CONFIG | |
| 1772 | /* Presumably not worth the space it takes. */ | |
| 1773 | # undef PROC_VDB | |
| 1774 | # undef MPROTECT_VDB | |
| 1775 | # endif | |
| 1776 | ||
| 85f29b3b TT |
1777 | # ifdef USE_MUNMAP |
| 1778 | # undef MPROTECT_VDB /* Can't deal with address space holes. */ | |
| 1779 | # endif | |
| 1780 | ||
| abdbd4a8 BM |
1781 | # ifdef PARALLEL_MARK |
| 1782 | # undef MPROTECT_VDB /* For now. */ | |
| 1783 | # endif | |
| 1784 | ||
| 70f72767 TT |
1785 | # if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB) |
| 1786 | # define DEFAULT_VDB | |
| 1787 | # endif | |
| 1788 | ||
| 56293c2b BM |
1789 | # ifndef PREFETCH |
| 1790 | # define PREFETCH(x) | |
| 1791 | # define NO_PREFETCH | |
| 1792 | # endif | |
| 1793 | ||
| 1794 | # ifndef PREFETCH_FOR_WRITE | |
| 1795 | # define PREFETCH_FOR_WRITE(x) | |
| 1796 | # define NO_PREFETCH_FOR_WRITE | |
| 1797 | # endif | |
| 1798 | ||
| 1799 | # ifndef CACHE_LINE_SIZE | |
| 1800 | # define CACHE_LINE_SIZE 32 /* Wild guess */ | |
| 1801 | # endif | |
| 1802 | ||
| 1803 | # ifndef CLEAR_DOUBLE | |
| 1804 | # define CLEAR_DOUBLE(x) \ | |
| 1805 | ((word*)x)[0] = 0; \ | |
| 1806 | ((word*)x)[1] = 0; | |
| 1807 | # endif /* CLEAR_DOUBLE */ | |
| 1808 | ||
| 4c7726b1 BM |
1809 | /* Internally we use GC_SOLARIS_THREADS to test for either old or pthreads. */ |
| 1810 | # if defined(GC_SOLARIS_PTHREADS) && !defined(GC_SOLARIS_THREADS) | |
| 1811 | # define GC_SOLARIS_THREADS | |
| 70f72767 | 1812 | # endif |
| 4c7726b1 BM |
1813 | |
| 1814 | # if defined(GC_IRIX_THREADS) && !defined(IRIX5) | |
| 70f72767 TT |
1815 | --> inconsistent configuration |
| 1816 | # endif | |
| 4c7726b1 | 1817 | # if defined(GC_LINUX_THREADS) && !defined(LINUX) |
| 70f72767 TT |
1818 | --> inconsistent configuration |
| 1819 | # endif | |
| 4c7726b1 | 1820 | # if defined(GC_SOLARIS_THREADS) && !defined(SUNOS5) |
| 70f72767 TT |
1821 | --> inconsistent configuration |
| 1822 | # endif | |
| 4c7726b1 | 1823 | # if defined(GC_HPUX_THREADS) && !defined(HPUX) |
| 56293c2b BM |
1824 | --> inconsistent configuration |
| 1825 | # endif | |
| 4c7726b1 BM |
1826 | # if defined(GC_WIN32_THREADS) && !defined(MSWIN32) |
| 1827 | /* Ideally CYGWIN32 should work, in addition to MSWIN32. I suspect */ | |
| 1828 | /* the necessary code is mostly there, but nobody has actually made */ | |
| 1829 | /* sure the right combination of pieces is compiled in, etc. */ | |
| 5a2586cf TT |
1830 | --> inconsistent configuration |
| 1831 | # endif | |
| 4c7726b1 | 1832 | |
| 70f72767 | 1833 | # if defined(PCR) || defined(SRC_M3) || \ |
| 4c7726b1 BM |
1834 | defined(GC_SOLARIS_THREADS) || defined(GC_WIN32_THREADS) || \ |
| 1835 | defined(GC_PTHREADS) | |
| 70f72767 TT |
1836 | # define THREADS |
| 1837 | # endif | |
| 1838 | ||
| abdbd4a8 BM |
1839 | # if defined(HP_PA) || defined(M88K) || defined(POWERPC) && !defined(MACOSX) \ |
| 1840 | || defined(LINT) || defined(MSWINCE) \ | |
| 1841 | || (defined(I386) && defined(__LCC__)) | |
| 1842 | /* Use setjmp based hack to mark from callee-save registers. */ | |
| 1843 | /* The define should move to the individual platform */ | |
| 1844 | /* descriptions. */ | |
| 70f72767 TT |
1845 | # define USE_GENERIC_PUSH_REGS |
| 1846 | # endif | |
| 79f777fd BM |
1847 | |
| 1848 | # if defined(SPARC) | |
| 1849 | # define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ | |
| 1850 | /* include assembly code to do it well. */ | |
| 1851 | # endif | |
| 1852 | ||
| 1853 | /* Can we save call chain in objects for debugging? */ | |
| 1854 | /* SET NFRAMES (# of saved frames) and NARGS (#of args for each frame) */ | |
| 1855 | /* to reasonable values for the platform. */ | |
| 1856 | /* Set SAVE_CALL_CHAIN if we can. SAVE_CALL_COUNT can be specified at */ | |
| 1857 | /* build time, though we feel free to adjust it slightly. */ | |
| 1858 | /* Define NEED_CALLINFO if we either save the call stack or */ | |
| 1859 | /* GC_ADD_CALLER is defined. */ | |
| 1860 | #ifdef LINUX | |
| 1861 | # include <features.h> | |
| 1862 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2 | |
| 1863 | # define HAVE_BUILTIN_BACKTRACE | |
| 1864 | # endif | |
| 1865 | #endif | |
| 1866 | ||
| 1867 | #if defined(SPARC) | |
| 1868 | # define CAN_SAVE_CALL_STACKS | |
| 1869 | # define CAN_SAVE_CALL_ARGS | |
| 1870 | #endif | |
| 48528b67 | 1871 | #if (defined(I386) || defined(X86_64)) && defined(LINUX) |
| abdbd4a8 BM |
1872 | /* SAVE_CALL_CHAIN is supported if the code is compiled to save */ |
| 1873 | /* frame pointers by default, i.e. no -fomit-frame-pointer flag. */ | |
| 79f777fd BM |
1874 | # define CAN_SAVE_CALL_STACKS |
| 1875 | # define CAN_SAVE_CALL_ARGS | |
| 1876 | #endif | |
| 1877 | #if defined(HAVE_BUILTIN_BACKTRACE) && !defined(CAN_SAVE_CALL_STACKS) | |
| 1878 | # define CAN_SAVE_CALL_STACKS | |
| 1879 | #endif | |
| 1880 | ||
| 1881 | # if defined(SAVE_CALL_COUNT) && !defined(GC_ADD_CALLER) \ | |
| 1882 | && defined(CAN_SAVE_CALL_STACKS) | |
| abdbd4a8 BM |
1883 | # define SAVE_CALL_CHAIN |
| 1884 | # endif | |
| 79f777fd BM |
1885 | # ifdef SAVE_CALL_CHAIN |
| 1886 | # if defined(SAVE_CALL_NARGS) && defined(CAN_SAVE_CALL_ARGS) | |
| 1887 | # define NARGS SAVE_CALL_NARGS | |
| 1888 | # else | |
| 1889 | # define NARGS 0 /* Number of arguments to save for each call. */ | |
| 1890 | # endif | |
| abdbd4a8 | 1891 | # endif |
| 79f777fd BM |
1892 | # ifdef SAVE_CALL_CHAIN |
| 1893 | # ifndef SAVE_CALL_COUNT | |
| 1894 | # define NFRAMES 6 /* Number of frames to save. Even for */ | |
| 1895 | /* alignment reasons. */ | |
| 1896 | # else | |
| 1897 | # define NFRAMES ((SAVE_CALL_COUNT + 1) & ~1) | |
| 1898 | # endif | |
| 1899 | # define NEED_CALLINFO | |
| 1900 | # endif /* SAVE_CALL_CHAIN */ | |
| 1901 | # ifdef GC_ADD_CALLER | |
| 1902 | # define NFRAMES 1 | |
| 1903 | # define NARGS 0 | |
| 1904 | # define NEED_CALLINFO | |
| 1905 | # endif | |
| 1906 | ||
| 1907 | # if defined(MAKE_BACK_GRAPH) && !defined(DBG_HDRS_ALL) | |
| 1908 | # define DBG_HDRS_ALL | |
| 70f72767 TT |
1909 | # endif |
| 1910 | ||
| 56293c2b | 1911 | # endif /* GCCONFIG_H */ |