1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #ifndef _SYS_ISA_DEFS_H 29 #define _SYS_ISA_DEFS_H 30 31 /* 32 * This header file serves to group a set of well known defines and to 33 * set these for each instruction set architecture. These defines may 34 * be divided into two groups; characteristics of the processor and 35 * implementation choices for Solaris on a processor. 36 * 37 * Processor Characteristics: 38 * 39 * _LITTLE_ENDIAN / _BIG_ENDIAN: 40 * The natural byte order of the processor. A pointer to an int points 41 * to the least/most significant byte of that int. 42 * 43 * _STACK_GROWS_UPWARD / _STACK_GROWS_DOWNWARD: 44 * The processor specific direction of stack growth. A push onto the 45 * stack increases/decreases the stack pointer, so it stores data at 46 * successively higher/lower addresses. (Stackless machines ignored 47 * without regrets). 48 * 49 * _LONG_LONG_HTOL / _LONG_LONG_LTOH: 50 * A pointer to a long long points to the most/least significant long 51 * within that long long. 52 * 53 * _BIT_FIELDS_HTOL / _BIT_FIELDS_LTOH: 54 * The C compiler assigns bit fields from the high/low to the low/high end 55 * of an int (most to least significant vs. least to most significant). 56 * 57 * _IEEE_754: 58 * The processor (or supported implementations of the processor) 59 * supports the ieee-754 floating point standard. No other floating 60 * point standards are supported (or significant). Any other supported 61 * floating point formats are expected to be cased on the ISA processor 62 * symbol. 63 * 64 * _CHAR_IS_UNSIGNED / _CHAR_IS_SIGNED: 65 * The C Compiler implements objects of type `char' as `unsigned' or 66 * `signed' respectively. This is really an implementation choice of 67 * the compiler writer, but it is specified in the ABI and tends to 68 * be uniform across compilers for an instruction set architecture. 69 * Hence, it has the properties of a processor characteristic. 70 * 71 * _CHAR_ALIGNMENT / _SHORT_ALIGNMENT / _INT_ALIGNMENT / _LONG_ALIGNMENT / 72 * _LONG_LONG_ALIGNMENT / _DOUBLE_ALIGNMENT / _LONG_DOUBLE_ALIGNMENT / 73 * _POINTER_ALIGNMENT / _FLOAT_ALIGNMENT: 74 * The ABI defines alignment requirements of each of the primitive 75 * object types. Some, if not all, may be hardware requirements as 76 * well. The values are expressed in "byte-alignment" units. 77 * 78 * _MAX_ALIGNMENT: 79 * The most stringent alignment requirement as specified by the ABI. 80 * Equal to the maximum of all the above _XXX_ALIGNMENT values. 81 * 82 * _ALIGNMENT_REQUIRED: 83 * True or false (1 or 0) whether or not the hardware requires the ABI 84 * alignment. 85 * 86 * _LONG_LONG_ALIGNMENT_32 87 * The 32-bit ABI supported by a 64-bit kernel may have different 88 * alignment requirements for primitive object types. The value of this 89 * identifier is expressed in "byte-alignment" units. 90 * 91 * _HAVE_CPUID_INSN 92 * This indicates that the architecture supports the 'cpuid' 93 * instruction as defined by Intel. (Intel allows other vendors 94 * to extend the instruction for their own purposes.) 95 * 96 * 97 * Implementation Choices: 98 * 99 * _ILP32 / _LP64: 100 * This specifies the compiler data type implementation as specified in 101 * the relevant ABI. The choice between these is strongly influenced 102 * by the underlying hardware, but is not absolutely tied to it. 103 * Currently only two data type models are supported: 104 * 105 * _ILP32: 106 * Int/Long/Pointer are 32 bits. This is the historical UNIX 107 * and Solaris implementation. Due to its historical standing, 108 * this is the default case. 109 * 110 * _LP64: 111 * Long/Pointer are 64 bits, Int is 32 bits. This is the chosen 112 * implementation for 64-bit ABIs such as SPARC V9. 113 * 114 * _I32LPx: 115 * A compilation environment where 'int' is 32-bit, and 116 * longs and pointers are simply the same size. 117 * 118 * In all cases, Char is 8 bits and Short is 16 bits. 119 * 120 * _SUNOS_VTOC_8 / _SUNOS_VTOC_16 / _SVR4_VTOC_16: 121 * This specifies the form of the disk VTOC (or label): 122 * 123 * _SUNOS_VTOC_8: 124 * This is a VTOC form which is upwardly compatible with the 125 * SunOS 4.x disk label and allows 8 partitions per disk. 126 * 127 * _SUNOS_VTOC_16: 128 * In this format the incore vtoc image matches the ondisk 129 * version. It allows 16 slices per disk, and is not 130 * compatible with the SunOS 4.x disk label. 131 * 132 * Note that these are not the only two VTOC forms possible and 133 * additional forms may be added. One possible form would be the 134 * SVr4 VTOC form. The symbol for that is reserved now, although 135 * it is not implemented. 136 * 137 * _SVR4_VTOC_16: 138 * This VTOC form is compatible with the System V Release 4 139 * VTOC (as implemented on the SVr4 Intel and 3b ports) with 140 * 16 partitions per disk. 141 * 142 * 143 * _DMA_USES_PHYSADDR / _DMA_USES_VIRTADDR 144 * This describes the type of addresses used by system DMA: 145 * 146 * _DMA_USES_PHYSADDR: 147 * This type of DMA, used in the x86 implementation, 148 * requires physical addresses for DMA buffers. The 24-bit 149 * addresses used by some legacy boards is the source of the 150 * "low-memory" (<16MB) requirement for some devices using DMA. 151 * 152 * _DMA_USES_VIRTADDR: 153 * This method of DMA allows the use of virtual addresses for 154 * DMA transfers. 155 * 156 * _FIRMWARE_NEEDS_FDISK / _NO_FDISK_PRESENT 157 * This indicates the presence/absence of an fdisk table. 158 * 159 * _FIRMWARE_NEEDS_FDISK 160 * The fdisk table is required by system firmware. If present, 161 * it allows a disk to be subdivided into multiple fdisk 162 * partitions, each of which is equivalent to a separate, 163 * virtual disk. This enables the co-existence of multiple 164 * operating systems on a shared hard disk. 165 * 166 * _NO_FDISK_PRESENT 167 * If the fdisk table is absent, it is assumed that the entire 168 * media is allocated for a single operating system. 169 * 170 * _HAVE_TEM_FIRMWARE 171 * Defined if this architecture has the (fallback) option of 172 * using prom_* calls for doing I/O if a suitable kernel driver 173 * is not available to do it. 174 * 175 * _DONT_USE_1275_GENERIC_NAMES 176 * Controls whether or not device tree node names should 177 * comply with the IEEE 1275 "Generic Names" Recommended 178 * Practice. With _DONT_USE_GENERIC_NAMES, device-specific 179 * names identifying the particular device will be used. 180 * 181 * __i386_COMPAT 182 * This indicates whether the i386 ABI is supported as a *non-native* 183 * mode for the platform. When this symbol is defined: 184 * - 32-bit xstat-style system calls are enabled 185 * - 32-bit xmknod-style system calls are enabled 186 * - 32-bit system calls use i386 sizes -and- alignments 187 * 188 * Note that this is NOT defined for the i386 native environment! 189 * 190 * __x86 191 * This is ONLY a synonym for defined(__i386) || defined(__amd64) 192 * which is useful only insofar as these two architectures share 193 * common attributes. Analogous to __sparc. 194 * 195 * _PSM_MODULES 196 * This indicates whether or not the implementation uses PSM 197 * modules for processor support, reading /etc/mach from inside 198 * the kernel to extract a list. 199 * 200 * _RTC_CONFIG 201 * This indicates whether or not the implementation uses /etc/rtc_config 202 * to configure the real-time clock in the kernel. 203 * 204 * _UNIX_KRTLD 205 * This indicates that the implementation uses a dynamically 206 * linked unix + krtld to form the core kernel image at boot 207 * time, or (in the absence of this symbol) a prelinked kernel image. 208 * 209 * _OBP 210 * This indicates the firmware interface is OBP. 211 * 212 * _SOFT_HOSTID 213 * This indicates that the implementation obtains the hostid 214 * from the file /etc/hostid, rather than from hardware. 215 */ 216 217 #ifdef __cplusplus 218 extern "C" { 219 #endif 220 221 /* 222 * The following set of definitions characterize Solaris on AMD's 223 * 64-bit systems. 224 */ 225 #if defined(__x86_64) || defined(__amd64) 226 227 #if !defined(__amd64) 228 #define __amd64 /* preferred guard */ 229 #endif 230 231 #if !defined(__x86) 232 #define __x86 233 #endif 234 235 /* 236 * Define the appropriate "processor characteristics" 237 */ 238 #ifdef illumos 239 #define _LITTLE_ENDIAN 240 #endif 241 #define _STACK_GROWS_DOWNWARD 242 #define _LONG_LONG_LTOH 243 #define _BIT_FIELDS_LTOH 244 #define _IEEE_754 245 #define _CHAR_IS_SIGNED 246 #define _BOOL_ALIGNMENT 1 247 #define _CHAR_ALIGNMENT 1 248 #define _SHORT_ALIGNMENT 2 249 #define _INT_ALIGNMENT 4 250 #define _FLOAT_ALIGNMENT 4 251 #define _FLOAT_COMPLEX_ALIGNMENT 4 252 #define _LONG_ALIGNMENT 8 253 #define _LONG_LONG_ALIGNMENT 8 254 #define _DOUBLE_ALIGNMENT 8 255 #define _DOUBLE_COMPLEX_ALIGNMENT 8 256 #define _LONG_DOUBLE_ALIGNMENT 16 257 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 16 258 #define _POINTER_ALIGNMENT 8 259 #define _MAX_ALIGNMENT 16 260 #define _ALIGNMENT_REQUIRED 1 261 262 /* 263 * Different alignment constraints for the i386 ABI in compatibility mode 264 */ 265 #define _LONG_LONG_ALIGNMENT_32 4 266 267 /* 268 * Define the appropriate "implementation choices". 269 */ 270 #if !defined(_LP64) 271 #define _LP64 272 #endif 273 #if !defined(_I32LPx) && defined(_KERNEL) 274 #define _I32LPx 275 #endif 276 #define _MULTI_DATAMODEL 277 #define _SUNOS_VTOC_16 278 #define _DMA_USES_PHYSADDR 279 #define _FIRMWARE_NEEDS_FDISK 280 #define __i386_COMPAT 281 #define _PSM_MODULES 282 #define _RTC_CONFIG 283 #define _SOFT_HOSTID 284 #define _DONT_USE_1275_GENERIC_NAMES 285 #define _HAVE_CPUID_INSN 286 287 /* 288 * The feature test macro __i386 is generic for all processors implementing 289 * the Intel 386 instruction set or a superset of it. Specifically, this 290 * includes all members of the 386, 486, and Pentium family of processors. 291 */ 292 #elif defined(__i386) || defined(__i386__) 293 294 #if !defined(__i386) 295 #define __i386 296 #endif 297 298 #if !defined(__x86) 299 #define __x86 300 #endif 301 302 /* 303 * Define the appropriate "processor characteristics" 304 */ 305 #ifdef illumos 306 #define _LITTLE_ENDIAN 307 #endif 308 #define _STACK_GROWS_DOWNWARD 309 #define _LONG_LONG_LTOH 310 #define _BIT_FIELDS_LTOH 311 #define _IEEE_754 312 #define _CHAR_IS_SIGNED 313 #define _BOOL_ALIGNMENT 1 314 #define _CHAR_ALIGNMENT 1 315 #define _SHORT_ALIGNMENT 2 316 #define _INT_ALIGNMENT 4 317 #define _FLOAT_ALIGNMENT 4 318 #define _FLOAT_COMPLEX_ALIGNMENT 4 319 #define _LONG_ALIGNMENT 4 320 #define _LONG_LONG_ALIGNMENT 4 321 #define _DOUBLE_ALIGNMENT 4 322 #define _DOUBLE_COMPLEX_ALIGNMENT 4 323 #define _LONG_DOUBLE_ALIGNMENT 4 324 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 4 325 #define _POINTER_ALIGNMENT 4 326 #define _MAX_ALIGNMENT 4 327 #define _ALIGNMENT_REQUIRED 0 328 329 #define _LONG_LONG_ALIGNMENT_32 _LONG_LONG_ALIGNMENT 330 331 /* 332 * Define the appropriate "implementation choices". 333 */ 334 #if !defined(_ILP32) 335 #define _ILP32 336 #endif 337 #if !defined(_I32LPx) && defined(_KERNEL) 338 #define _I32LPx 339 #endif 340 #define _SUNOS_VTOC_16 341 #define _DMA_USES_PHYSADDR 342 #define _FIRMWARE_NEEDS_FDISK 343 #define _PSM_MODULES 344 #define _RTC_CONFIG 345 #define _SOFT_HOSTID 346 #define _DONT_USE_1275_GENERIC_NAMES 347 #define _HAVE_CPUID_INSN 348 349 #elif defined(__aarch64__) 350 351 /* 352 * Define the appropriate "processor characteristics" 353 */ 354 #define _STACK_GROWS_DOWNWARD 355 #define _LONG_LONG_LTOH 356 #define _BIT_FIELDS_LTOH 357 #define _IEEE_754 358 #define _CHAR_IS_UNSIGNED 359 #define _BOOL_ALIGNMENT 1 360 #define _CHAR_ALIGNMENT 1 361 #define _SHORT_ALIGNMENT 2 362 #define _INT_ALIGNMENT 4 363 #define _FLOAT_ALIGNMENT 4 364 #define _FLOAT_COMPLEX_ALIGNMENT 4 365 #define _LONG_ALIGNMENT 8 366 #define _LONG_LONG_ALIGNMENT 8 367 #define _DOUBLE_ALIGNMENT 8 368 #define _DOUBLE_COMPLEX_ALIGNMENT 8 369 #define _LONG_DOUBLE_ALIGNMENT 16 370 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 16 371 #define _POINTER_ALIGNMENT 8 372 #define _MAX_ALIGNMENT 16 373 #define _ALIGNMENT_REQUIRED 1 374 375 #define _LONG_LONG_ALIGNMENT_32 _LONG_LONG_ALIGNMENT 376 377 /* 378 * Define the appropriate "implementation choices" 379 */ 380 #if !defined(_LP64) 381 #define _LP64 382 #endif 383 #define _SUNOS_VTOC_16 384 #define _DMA_USES_PHYSADDR 385 #define _FIRMWARE_NEEDS_FDISK 386 #define _PSM_MODULES 387 #define _RTC_CONFIG 388 #define _DONT_USE_1275_GENERIC_NAMES 389 #define _HAVE_CPUID_INSN 390 391 #elif defined(__arm__) 392 393 /* 394 * Define the appropriate "processor characteristics" 395 */ 396 #define _STACK_GROWS_DOWNWARD 397 #define _LONG_LONG_LTOH 398 #define _BIT_FIELDS_LTOH 399 #define _IEEE_754 400 #define _CHAR_IS_SIGNED 401 #define _BOOL_ALIGNMENT 1 402 #define _CHAR_ALIGNMENT 1 403 #define _SHORT_ALIGNMENT 2 404 #define _INT_ALIGNMENT 4 405 #define _FLOAT_ALIGNMENT 4 406 #define _FLOAT_COMPLEX_ALIGNMENT 4 407 #define _LONG_ALIGNMENT 4 408 #define _LONG_LONG_ALIGNMENT 4 409 #define _DOUBLE_ALIGNMENT 4 410 #define _DOUBLE_COMPLEX_ALIGNMENT 4 411 #define _LONG_DOUBLE_ALIGNMENT 4 412 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 4 413 #define _POINTER_ALIGNMENT 4 414 #define _MAX_ALIGNMENT 4 415 #define _ALIGNMENT_REQUIRED 0 416 417 #define _LONG_LONG_ALIGNMENT_32 _LONG_LONG_ALIGNMENT 418 419 /* 420 * Define the appropriate "implementation choices". 421 */ 422 #if !defined(_ILP32) 423 #define _ILP32 424 #endif 425 #if !defined(_I32LPx) && defined(_KERNEL) 426 #define _I32LPx 427 #endif 428 #define _SUNOS_VTOC_16 429 #define _DMA_USES_PHYSADDR 430 #define _FIRMWARE_NEEDS_FDISK 431 #define _PSM_MODULES 432 #define _RTC_CONFIG 433 #define _DONT_USE_1275_GENERIC_NAMES 434 #define _HAVE_CPUID_INSN 435 436 #elif defined(__mips__) 437 438 /* 439 * Define the appropriate "processor characteristics" 440 */ 441 #define _STACK_GROWS_DOWNWARD 442 #define _LONG_LONG_LTOH 443 #define _BIT_FIELDS_LTOH 444 #define _IEEE_754 445 #define _CHAR_IS_SIGNED 446 #define _BOOL_ALIGNMENT 1 447 #define _CHAR_ALIGNMENT 1 448 #define _SHORT_ALIGNMENT 2 449 #define _INT_ALIGNMENT 4 450 #define _FLOAT_ALIGNMENT 4 451 #define _FLOAT_COMPLEX_ALIGNMENT 4 452 #if defined(__mips_n64) 453 #define _LONG_ALIGNMENT 8 454 #define _LONG_LONG_ALIGNMENT 8 455 #define _DOUBLE_ALIGNMENT 8 456 #define _DOUBLE_COMPLEX_ALIGNMENT 8 457 #define _LONG_DOUBLE_ALIGNMENT 8 458 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 8 459 #define _POINTER_ALIGNMENT 8 460 #define _MAX_ALIGNMENT 8 461 #define _ALIGNMENT_REQUIRED 0 462 463 #define _LONG_LONG_ALIGNMENT_32 _INT_ALIGNMENT 464 /* 465 * Define the appropriate "implementation choices". 466 */ 467 #if !defined(_LP64) 468 #define _LP64 469 #endif 470 #else 471 #define _LONG_ALIGNMENT 4 472 #define _LONG_LONG_ALIGNMENT 4 473 #define _DOUBLE_ALIGNMENT 4 474 #define _DOUBLE_COMPLEX_ALIGNMENT 4 475 #define _LONG_DOUBLE_ALIGNMENT 4 476 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 4 477 #define _POINTER_ALIGNMENT 4 478 #define _MAX_ALIGNMENT 4 479 #define _ALIGNMENT_REQUIRED 0 480 481 #define _LONG_LONG_ALIGNMENT_32 _LONG_LONG_ALIGNMENT 482 483 /* 484 * Define the appropriate "implementation choices". 485 */ 486 #define _ILP32 487 #if !defined(_I32LPx) && defined(_KERNEL) 488 #define _I32LPx 489 #endif 490 #endif 491 #define _SUNOS_VTOC_16 492 #define _DMA_USES_PHYSADDR 493 #define _FIRMWARE_NEEDS_FDISK 494 #define _PSM_MODULES 495 #define _RTC_CONFIG 496 #define _DONT_USE_1275_GENERIC_NAMES 497 #define _HAVE_CPUID_INSN 498 499 #elif defined(__powerpc__) 500 501 #if defined(__BIG_ENDIAN__) 502 #define _BIT_FIELDS_HTOL 503 #else 504 #define _BIT_FIELDS_LTOH 505 #endif 506 507 /* 508 * The following set of definitions characterize the Solaris on SPARC systems. 509 * 510 * The symbol __sparc indicates any of the SPARC family of processor 511 * architectures. This includes SPARC V7, SPARC V8 and SPARC V9. 512 * 513 * The symbol __sparcv8 indicates the 32-bit SPARC V8 architecture as defined 514 * by Version 8 of the SPARC Architecture Manual. (SPARC V7 is close enough 515 * to SPARC V8 for the former to be subsumed into the latter definition.) 516 * 517 * The symbol __sparcv9 indicates the 64-bit SPARC V9 architecture as defined 518 * by Version 9 of the SPARC Architecture Manual. 519 * 520 * The symbols __sparcv8 and __sparcv9 are mutually exclusive, and are only 521 * relevant when the symbol __sparc is defined. 522 */ 523 /* 524 * XXX Due to the existence of 5110166, "defined(__sparcv9)" needs to be added 525 * to support backwards builds. This workaround should be removed in s10_71. 526 */ 527 #elif defined(__sparc) || defined(__sparcv9) || defined(__sparc__) 528 #if !defined(__sparc) 529 #define __sparc 530 #endif 531 532 /* 533 * You can be 32-bit or 64-bit, but not both at the same time. 534 */ 535 #if defined(__sparcv8) && defined(__sparcv9) 536 #error "SPARC Versions 8 and 9 are mutually exclusive choices" 537 #endif 538 539 /* 540 * Existing compilers do not set __sparcv8. Years will transpire before 541 * the compilers can be depended on to set the feature test macro. In 542 * the interim, we'll set it here on the basis of historical behaviour; 543 * if you haven't asked for SPARC V9, then you must've meant SPARC V8. 544 */ 545 #if !defined(__sparcv9) && !defined(__sparcv8) 546 #define __sparcv8 547 #endif 548 549 /* 550 * Define the appropriate "processor characteristics" shared between 551 * all Solaris on SPARC systems. 552 */ 553 #ifdef illumos 554 #define _BIG_ENDIAN 555 #endif 556 #define _STACK_GROWS_DOWNWARD 557 #define _LONG_LONG_HTOL 558 #define _BIT_FIELDS_HTOL 559 #define _IEEE_754 560 #define _CHAR_IS_SIGNED 561 #define _BOOL_ALIGNMENT 1 562 #define _CHAR_ALIGNMENT 1 563 #define _SHORT_ALIGNMENT 2 564 #define _INT_ALIGNMENT 4 565 #define _FLOAT_ALIGNMENT 4 566 #define _FLOAT_COMPLEX_ALIGNMENT 4 567 #define _LONG_LONG_ALIGNMENT 8 568 #define _DOUBLE_ALIGNMENT 8 569 #define _DOUBLE_COMPLEX_ALIGNMENT 8 570 #define _ALIGNMENT_REQUIRED 1 571 572 /* 573 * Define the appropriate "implementation choices" shared between versions. 574 */ 575 #define _SUNOS_VTOC_8 576 #define _DMA_USES_VIRTADDR 577 #define _NO_FDISK_PRESENT 578 #define _HAVE_TEM_FIRMWARE 579 #define _OBP 580 581 /* 582 * The following set of definitions characterize the implementation of 583 * 32-bit Solaris on SPARC V8 systems. 584 */ 585 #if defined(__sparcv8) 586 587 /* 588 * Define the appropriate "processor characteristics" 589 */ 590 #define _LONG_ALIGNMENT 4 591 #define _LONG_DOUBLE_ALIGNMENT 8 592 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 8 593 #define _POINTER_ALIGNMENT 4 594 #define _MAX_ALIGNMENT 8 595 596 #define _LONG_LONG_ALIGNMENT_32 _LONG_LONG_ALIGNMENT 597 598 /* 599 * Define the appropriate "implementation choices" 600 */ 601 #define _ILP32 602 #if !defined(_I32LPx) && defined(_KERNEL) 603 #define _I32LPx 604 #endif 605 606 /* 607 * The following set of definitions characterize the implementation of 608 * 64-bit Solaris on SPARC V9 systems. 609 */ 610 #elif defined(__sparcv9) 611 612 /* 613 * Define the appropriate "processor characteristics" 614 */ 615 #define _LONG_ALIGNMENT 8 616 #define _LONG_DOUBLE_ALIGNMENT 16 617 #define _LONG_DOUBLE_COMPLEX_ALIGNMENT 16 618 #define _POINTER_ALIGNMENT 8 619 #define _MAX_ALIGNMENT 16 620 621 #define _LONG_LONG_ALIGNMENT_32 _LONG_LONG_ALIGNMENT 622 623 /* 624 * Define the appropriate "implementation choices" 625 */ 626 #if !defined(_LP64) 627 #define _LP64 628 #endif 629 #if !defined(_I32LPx) 630 #define _I32LPx 631 #endif 632 #define _MULTI_DATAMODEL 633 634 #else 635 #error "unknown SPARC version" 636 #endif 637 638 /* 639 * #error is strictly ansi-C, but works as well as anything for K&R systems. 640 */ 641 #else 642 #error "ISA not supported" 643 #endif 644 645 #if defined(_ILP32) && defined(_LP64) 646 #error "Both _ILP32 and _LP64 are defined" 647 #endif 648 649 #ifdef __cplusplus 650 } 651 #endif 652 653 #endif /* _SYS_ISA_DEFS_H */ 654