gcc/defaults.h

   1 /* Definitions of various defaults for tm.h macros.
   2    Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   3    2005, 2007, 2008, 2009
   4    Free Software Foundation, Inc.
   5    Contributed by Ron Guilmette (rfg@monkeys.com)
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 3, or (at your option) any later
  12 version.
  13
  14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 Under Section 7 of GPL version 3, you are granted additional
  20 permissions described in the GCC Runtime Library Exception, version
  21 3.1, as published by the Free Software Foundation.
  22
  23 You should have received a copy of the GNU General Public License and
  24 a copy of the GCC Runtime Library Exception along with this program;
  25 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  26 <http://www.gnu.org/licenses/>.  */
  27
  28 #ifndef GCC_DEFAULTS_H
  29 #define GCC_DEFAULTS_H
  30
  31 #ifndef GET_ENVIRONMENT
  32 #define GET_ENVIRONMENT(VALUE, NAME) do { (VALUE) = getenv (NAME); } while (0)
  33 #endif
  34
  35 #define obstack_chunk_alloc     ((void *(*) (long)) xmalloc)
  36 #define obstack_chunk_free      ((void (*) (void *)) free)
  37 #define OBSTACK_CHUNK_SIZE      0
  38 #define gcc_obstack_init(OBSTACK)                       \
  39   _obstack_begin ((OBSTACK), OBSTACK_CHUNK_SIZE, 0,     \
  40                   obstack_chunk_alloc,                  \
  41                   obstack_chunk_free)
  42
  43 /* Store in OUTPUT a string (made with alloca) containing an
  44    assembler-name for a local static variable or function named NAME.
  45    LABELNO is an integer which is different for each call.  */
  46
  47 #ifndef ASM_PN_FORMAT
  48 # ifndef NO_DOT_IN_LABEL
  49 #  define ASM_PN_FORMAT "%s.%lu"
  50 # else
  51 #  ifndef NO_DOLLAR_IN_LABEL
  52 #   define ASM_PN_FORMAT "%s$%lu"
  53 #  else
  54 #   define ASM_PN_FORMAT "__%s_%lu"
  55 #  endif
  56 # endif
  57 #endif /* ! ASM_PN_FORMAT */
  58
  59 #ifndef ASM_FORMAT_PRIVATE_NAME
  60 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
  61   do { const char *const name_ = (NAME); \
  62        char *const output_ = (OUTPUT) = \
  63          (char *) alloca (strlen (name_) + 32); \
  64        sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
  65   } while (0)
  66 #endif
  67
  68 /* Choose a reasonable default for ASM_OUTPUT_ASCII.  */
  69
  70 #ifndef ASM_OUTPUT_ASCII
  71 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
  72   do {                                                                        \
  73     FILE *_hide_asm_out_file = (MYFILE);                                      \
  74     const unsigned char *_hide_p = (const unsigned char *) (MYSTRING);        \
  75     int _hide_thissize = (MYLENGTH);                                          \
  76     {                                                                         \
  77       FILE *asm_out_file = _hide_asm_out_file;                                \
  78       const unsigned char *p = _hide_p;                                       \
  79       int thissize = _hide_thissize;                                          \
  80       int i;                                                                  \
  81       fprintf (asm_out_file, "\t.ascii \"");                                  \
  82                                                                               \
  83       for (i = 0; i < thissize; i++)                                          \
  84         {                                                                     \
  85           int c = p[i];                                                       \
  86           if (c == '\"' || c == '\\')                                         \
  87             putc ('\\', asm_out_file);                                        \
  88           if (ISPRINT(c))                                                     \
  89             putc (c, asm_out_file);                                           \
  90           else                                                                \
  91             {                                                                 \
  92               fprintf (asm_out_file, "\\%o", c);                              \
  93               /* After an octal-escape, if a digit follows,                   \
  94                  terminate one string constant and start another.             \
  95                  The VAX assembler fails to stop reading the escape           \
  96                  after three digits, so this is the only way we               \
  97                  can get it to parse the data properly.  */                   \
  98               if (i < thissize - 1 && ISDIGIT(p[i + 1]))                      \
  99                 fprintf (asm_out_file, "\"\n\t.ascii \"");                    \
 100           }                                                                   \
 101         }                                                                     \
 102       fprintf (asm_out_file, "\"\n");                                         \
 103     }                                                                         \
 104   }                                                                           \
 105   while (0)
 106 #endif
 107
 108 /* This is how we tell the assembler to equate two values.  */
 109 #ifdef SET_ASM_OP
 110 #ifndef ASM_OUTPUT_DEF
 111 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \
 112  do {   fprintf ((FILE), "%s", SET_ASM_OP);                             \
 113         assemble_name (FILE, LABEL1);                                   \
 114         fprintf (FILE, ",");                                            \
 115         assemble_name (FILE, LABEL2);                                   \
 116         fprintf (FILE, "\n");                                           \
 117   } while (0)
 118 #endif
 119 #endif
 120
 121 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
 122 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE)                   \
 123   do                                                                    \
 124     {                                                                   \
 125       fprintf ((FILE), "\t.tls_common\t");                              \
 126       assemble_name ((FILE), (NAME));                                   \
 127       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",          \
 128                (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT);              \
 129     }                                                                   \
 130   while (0)
 131 #endif
 132
 133 /* Decide whether to defer emitting the assembler output for an equate
 134    of two values.  The default is to not defer output.  */
 135 #ifndef TARGET_DEFERRED_OUTPUT_DEFS
 136 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false
 137 #endif
 138
 139 /* This is how to output the definition of a user-level label named
 140    NAME, such as the label on a static function or variable NAME.  */
 141
 142 #ifndef ASM_OUTPUT_LABEL
 143 #define ASM_OUTPUT_LABEL(FILE,NAME) \
 144   do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0)
 145 #endif
 146
 147 /* Output the definition of a compiler-generated label named NAME.  */
 148 #ifndef ASM_OUTPUT_INTERNAL_LABEL
 149 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME)    \
 150   do {                                          \
 151     assemble_name_raw ((FILE), (NAME));         \
 152     fputs (":\n", (FILE));                      \
 153   } while (0)
 154 #endif
 155
 156 /* This is how to output a reference to a user-level label named NAME.  */
 157
 158 #ifndef ASM_OUTPUT_LABELREF
 159 #define ASM_OUTPUT_LABELREF(FILE,NAME)  asm_fprintf ((FILE), "%U%s", (NAME))
 160 #endif
 161
 162 /* Allow target to print debug info labels specially.  This is useful for
 163    VLIW targets, since debug info labels should go into the middle of
 164    instruction bundles instead of breaking them.  */
 165
 166 #ifndef ASM_OUTPUT_DEBUG_LABEL
 167 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
 168   (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
 169 #endif
 170
 171 /* This is how we tell the assembler that a symbol is weak.  */
 172 #ifndef ASM_OUTPUT_WEAK_ALIAS
 173 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
 174 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE)      \
 175   do                                                    \
 176     {                                                   \
 177       ASM_WEAKEN_LABEL (STREAM, NAME);                  \
 178       if (VALUE)                                        \
 179         ASM_OUTPUT_DEF (STREAM, NAME, VALUE);           \
 180     }                                                   \
 181   while (0)
 182 #endif
 183 #endif
 184
 185 /* This is how we tell the assembler that a symbol is a weak alias to
 186    another symbol that doesn't require the other symbol to be defined.
 187    Uses of the former will turn into weak uses of the latter, i.e.,
 188    uses that, in case the latter is undefined, will not cause errors,
 189    and will add it to the symbol table as weak undefined.  However, if
 190    the latter is referenced directly, a strong reference prevails.  */
 191 #ifndef ASM_OUTPUT_WEAKREF
 192 #if defined HAVE_GAS_WEAKREF
 193 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE)                     \
 194   do                                                                    \
 195     {                                                                   \
 196       fprintf ((FILE), "\t.weakref\t");                                 \
 197       assemble_name ((FILE), (NAME));                                   \
 198       fprintf ((FILE), ",");                                            \
 199       assemble_name ((FILE), (VALUE));                                  \
 200       fprintf ((FILE), "\n");                                           \
 201     }                                                                   \
 202   while (0)
 203 #endif
 204 #endif
 205
 206 /* How to emit a .type directive.  */
 207 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE
 208 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
 209 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)   \
 210   do                                                    \
 211     {                                                   \
 212       fputs (TYPE_ASM_OP, STREAM);                      \
 213       assemble_name (STREAM, NAME);                     \
 214       fputs (", ", STREAM);                             \
 215       fprintf (STREAM, TYPE_OPERAND_FMT, TYPE);         \
 216       putc ('\n', STREAM);                              \
 217     }                                                   \
 218   while (0)
 219 #endif
 220 #endif
 221
 222 /* How to emit a .size directive.  */
 223 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE
 224 #ifdef SIZE_ASM_OP
 225 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE)   \
 226   do                                                    \
 227     {                                                   \
 228       HOST_WIDE_INT size_ = (SIZE);                     \
 229       fputs (SIZE_ASM_OP, STREAM);                      \
 230       assemble_name (STREAM, NAME);                     \
 231       fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
 232     }                                                   \
 233   while (0)
 234
 235 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME)          \
 236   do                                                    \
 237     {                                                   \
 238       fputs (SIZE_ASM_OP, STREAM);                      \
 239       assemble_name (STREAM, NAME);                     \
 240       fputs (", .-", STREAM);                           \
 241       assemble_name (STREAM, NAME);                     \
 242       putc ('\n', STREAM);                              \
 243     }                                                   \
 244   while (0)
 245
 246 #endif
 247 #endif
 248
 249 /* This determines whether or not we support weak symbols.  */
 250 #ifndef SUPPORTS_WEAK
 251 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
 252 #define SUPPORTS_WEAK 1
 253 #else
 254 #define SUPPORTS_WEAK 0
 255 #endif
 256 #endif
 257
 258 /* This determines whether or not we support link-once semantics.  */
 259 #ifndef SUPPORTS_ONE_ONLY
 260 #ifdef MAKE_DECL_ONE_ONLY
 261 #define SUPPORTS_ONE_ONLY 1
 262 #else
 263 #define SUPPORTS_ONE_ONLY 0
 264 #endif
 265 #endif
 266
 267 /* This determines whether weak symbols must be left out of a static
 268    archive's table of contents.  Defining this macro to be nonzero has
 269    the consequence that certain symbols will not be made weak that
 270    otherwise would be.  The C++ ABI requires this macro to be zero;
 271    see the documentation.  */
 272 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 273 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
 274 #endif
 275
 276 /* This determines whether or not we need linkonce unwind information.  */
 277 #ifndef TARGET_USES_WEAK_UNWIND_INFO
 278 #define TARGET_USES_WEAK_UNWIND_INFO 0
 279 #endif
 280
 281 /* By default, there is no prefix on user-defined symbols.  */
 282 #ifndef USER_LABEL_PREFIX
 283 #define USER_LABEL_PREFIX ""
 284 #endif
 285
 286 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
 287    provide a weak attribute.  Else define it to nothing.
 288
 289    This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
 290    not available at that time.
 291
 292    Note, this is only for use by target files which we know are to be
 293    compiled by GCC.  */
 294 #ifndef TARGET_ATTRIBUTE_WEAK
 295 # if SUPPORTS_WEAK
 296 #  define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
 297 # else
 298 #  define TARGET_ATTRIBUTE_WEAK
 299 # endif
 300 #endif
 301
 302 /* Determines whether we may use common symbols to represent one-only
 303    semantics (a.k.a. "vague linkage").  */
 304 #ifndef USE_COMMON_FOR_ONE_ONLY
 305 # define USE_COMMON_FOR_ONE_ONLY 1
 306 #endif
 307
 308 /* By default we can assume that all global symbols are in one namespace,
 309    across all shared libraries.  */
 310 #ifndef MULTIPLE_SYMBOL_SPACES
 311 # define MULTIPLE_SYMBOL_SPACES 0
 312 #endif
 313
 314 /* If the target supports init_priority C++ attribute, give
 315    SUPPORTS_INIT_PRIORITY a nonzero value.  */
 316 #ifndef SUPPORTS_INIT_PRIORITY
 317 #define SUPPORTS_INIT_PRIORITY 1
 318 #endif /* SUPPORTS_INIT_PRIORITY */
 319
 320 /* If duplicate library search directories can be removed from a
 321    linker command without changing the linker's semantics, give this
 322    symbol a nonzero.  */
 323 #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
 324 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
 325 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
 326
 327 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
 328    the rest of the DWARF 2 frame unwind support is also provided.  */
 329 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) \
 330     && !defined (TARGET_UNWIND_INFO)
 331 #define DWARF2_UNWIND_INFO 1
 332 #endif
 333
 334 /* If we have named sections, and we're using crtstuff to run ctors,
 335    use them for registering eh frame information.  */
 336 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
 337     && !defined(EH_FRAME_IN_DATA_SECTION)
 338 #ifndef EH_FRAME_SECTION_NAME
 339 #define EH_FRAME_SECTION_NAME ".eh_frame"
 340 #endif
 341 #endif
 342
 343 /* On many systems, different EH table encodings are used under
 344    difference circumstances.  Some will require runtime relocations;
 345    some will not.  For those that do not require runtime relocations,
 346    we would like to make the table read-only.  However, since the
 347    read-only tables may need to be combined with read-write tables
 348    that do require runtime relocation, it is not safe to make the
 349    tables read-only unless the linker will merge read-only and
 350    read-write sections into a single read-write section.  If your
 351    linker does not have this ability, but your system is such that no
 352    encoding used with non-PIC code will ever require a runtime
 353    relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
 354    your target configuration file.  */
 355 #ifndef EH_TABLES_CAN_BE_READ_ONLY
 356 #ifdef HAVE_LD_RO_RW_SECTION_MIXING
 357 #define EH_TABLES_CAN_BE_READ_ONLY 1
 358 #else
 359 #define EH_TABLES_CAN_BE_READ_ONLY 0
 360 #endif
 361 #endif
 362
 363 /* If we have named section and we support weak symbols, then use the
 364    .jcr section for recording java classes which need to be registered
 365    at program start-up time.  */
 366 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
 367 #ifndef JCR_SECTION_NAME
 368 #define JCR_SECTION_NAME ".jcr"
 369 #endif
 370 #endif
 371
 372 /* This decision to use a .jcr section can be overridden by defining
 373    USE_JCR_SECTION to 0 in target file.  This is necessary if target
 374    can define JCR_SECTION_NAME but does not have crtstuff or
 375    linker support for .jcr section.  */
 376 #ifndef TARGET_USE_JCR_SECTION
 377 #ifdef JCR_SECTION_NAME
 378 #define TARGET_USE_JCR_SECTION 1
 379 #else
 380 #define TARGET_USE_JCR_SECTION 0
 381 #endif
 382 #endif
 383
 384 /* Number of hardware registers that go into the DWARF-2 unwind info.
 385    If not defined, equals FIRST_PSEUDO_REGISTER  */
 386
 387 #ifndef DWARF_FRAME_REGISTERS
 388 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
 389 #endif
 390
 391 /* How to renumber registers for dbx and gdb.  If not defined, assume
 392    no renumbering is necessary.  */
 393
 394 #ifndef DBX_REGISTER_NUMBER
 395 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
 396 #endif
 397
 398 /* Default sizes for base C types.  If the sizes are different for
 399    your target, you should override these values by defining the
 400    appropriate symbols in your tm.h file.  */
 401
 402 #ifndef BITS_PER_UNIT
 403 #define BITS_PER_UNIT 8
 404 #endif
 405
 406 #ifndef BITS_PER_WORD
 407 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
 408 #endif
 409
 410 #ifndef CHAR_TYPE_SIZE
 411 #define CHAR_TYPE_SIZE BITS_PER_UNIT
 412 #endif
 413
 414 #ifndef BOOL_TYPE_SIZE
 415 /* `bool' has size and alignment `1', on almost all platforms.  */
 416 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
 417 #endif
 418
 419 #ifndef SHORT_TYPE_SIZE
 420 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
 421 #endif
 422
 423 #ifndef INT_TYPE_SIZE
 424 #define INT_TYPE_SIZE BITS_PER_WORD
 425 #endif
 426
 427 #ifndef LONG_TYPE_SIZE
 428 #define LONG_TYPE_SIZE BITS_PER_WORD
 429 #endif
 430
 431 #ifndef LONG_LONG_TYPE_SIZE
 432 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
 433 #endif
 434
 435 #ifndef WCHAR_TYPE_SIZE
 436 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
 437 #endif
 438
 439 #ifndef FLOAT_TYPE_SIZE
 440 #define FLOAT_TYPE_SIZE BITS_PER_WORD
 441 #endif
 442
 443 #ifndef DOUBLE_TYPE_SIZE
 444 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
 445 #endif
 446
 447 #ifndef LONG_DOUBLE_TYPE_SIZE
 448 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
 449 #endif
 450
 451 #ifndef DECIMAL32_TYPE_SIZE
 452 #define DECIMAL32_TYPE_SIZE 32
 453 #endif
 454
 455 #ifndef DECIMAL64_TYPE_SIZE
 456 #define DECIMAL64_TYPE_SIZE 64
 457 #endif
 458
 459 #ifndef DECIMAL128_TYPE_SIZE
 460 #define DECIMAL128_TYPE_SIZE 128
 461 #endif
 462
 463 #ifndef SHORT_FRACT_TYPE_SIZE
 464 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
 465 #endif
 466
 467 #ifndef FRACT_TYPE_SIZE
 468 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
 469 #endif
 470
 471 #ifndef LONG_FRACT_TYPE_SIZE
 472 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
 473 #endif
 474
 475 #ifndef LONG_LONG_FRACT_TYPE_SIZE
 476 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
 477 #endif
 478
 479 #ifndef SHORT_ACCUM_TYPE_SIZE
 480 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
 481 #endif
 482
 483 #ifndef ACCUM_TYPE_SIZE
 484 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
 485 #endif
 486
 487 #ifndef LONG_ACCUM_TYPE_SIZE
 488 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
 489 #endif
 490
 491 #ifndef LONG_LONG_ACCUM_TYPE_SIZE
 492 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
 493 #endif
 494
 495 /* We let tm.h override the types used here, to handle trivial differences
 496    such as the choice of unsigned int or long unsigned int for size_t.
 497    When machines start needing nontrivial differences in the size type,
 498    it would be best to do something here to figure out automatically
 499    from other information what type to use.  */
 500
 501 #ifndef SIZE_TYPE
 502 #define SIZE_TYPE "long unsigned int"
 503 #endif
 504
 505 #ifndef PID_TYPE
 506 #define PID_TYPE "int"
 507 #endif
 508
 509 /* If GCC knows the exact uint_least16_t and uint_least32_t types from
 510    <stdint.h>, use them for char16_t and char32_t.  Otherwise, use
 511    these guesses; getting the wrong type of a given width will not
 512    affect C++ name mangling because in C++ these are distinct types
 513    not typedefs.  */
 514
 515 #ifdef UINT_LEAST16_TYPE
 516 #define CHAR16_TYPE UINT_LEAST16_TYPE
 517 #else
 518 #define CHAR16_TYPE "short unsigned int"
 519 #endif
 520
 521 #ifdef UINT_LEAST32_TYPE
 522 #define CHAR32_TYPE UINT_LEAST32_TYPE
 523 #else
 524 #define CHAR32_TYPE "unsigned int"
 525 #endif
 526
 527 #ifndef WCHAR_TYPE
 528 #define WCHAR_TYPE "int"
 529 #endif
 530
 531 /* WCHAR_TYPE gets overridden by -fshort-wchar.  */
 532 #define MODIFIED_WCHAR_TYPE \
 533         (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
 534
 535 #ifndef PTRDIFF_TYPE
 536 #define PTRDIFF_TYPE "long int"
 537 #endif
 538
 539 #ifndef WINT_TYPE
 540 #define WINT_TYPE "unsigned int"
 541 #endif
 542
 543 #ifndef INTMAX_TYPE
 544 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE)     \
 545                      ? "int"                                    \
 546                      : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
 547                         ? "long int"                            \
 548                         : "long long int"))
 549 #endif
 550
 551 #ifndef UINTMAX_TYPE
 552 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE)    \
 553                      ? "unsigned int"                           \
 554                      : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
 555                         ? "long unsigned int"                   \
 556                         : "long long unsigned int"))
 557 #endif
 558
 559
 560 /* There are no default definitions of these <stdint.h> types.  */
 561
 562 #ifndef SIG_ATOMIC_TYPE
 563 #define SIG_ATOMIC_TYPE ((const char *) NULL)
 564 #endif
 565
 566 #ifndef INT8_TYPE
 567 #define INT8_TYPE ((const char *) NULL)
 568 #endif
 569
 570 #ifndef INT16_TYPE
 571 #define INT16_TYPE ((const char *) NULL)
 572 #endif
 573
 574 #ifndef INT32_TYPE
 575 #define INT32_TYPE ((const char *) NULL)
 576 #endif
 577
 578 #ifndef INT64_TYPE
 579 #define INT64_TYPE ((const char *) NULL)
 580 #endif
 581
 582 #ifndef UINT8_TYPE
 583 #define UINT8_TYPE ((const char *) NULL)
 584 #endif
 585
 586 #ifndef UINT16_TYPE
 587 #define UINT16_TYPE ((const char *) NULL)
 588 #endif
 589
 590 #ifndef UINT32_TYPE
 591 #define UINT32_TYPE ((const char *) NULL)
 592 #endif
 593
 594 #ifndef UINT64_TYPE
 595 #define UINT64_TYPE ((const char *) NULL)
 596 #endif
 597
 598 #ifndef INT_LEAST8_TYPE
 599 #define INT_LEAST8_TYPE ((const char *) NULL)
 600 #endif
 601
 602 #ifndef INT_LEAST16_TYPE
 603 #define INT_LEAST16_TYPE ((const char *) NULL)
 604 #endif
 605
 606 #ifndef INT_LEAST32_TYPE
 607 #define INT_LEAST32_TYPE ((const char *) NULL)
 608 #endif
 609
 610 #ifndef INT_LEAST64_TYPE
 611 #define INT_LEAST64_TYPE ((const char *) NULL)
 612 #endif
 613
 614 #ifndef UINT_LEAST8_TYPE
 615 #define UINT_LEAST8_TYPE ((const char *) NULL)
 616 #endif
 617
 618 #ifndef UINT_LEAST16_TYPE
 619 #define UINT_LEAST16_TYPE ((const char *) NULL)
 620 #endif
 621
 622 #ifndef UINT_LEAST32_TYPE
 623 #define UINT_LEAST32_TYPE ((const char *) NULL)
 624 #endif
 625
 626 #ifndef UINT_LEAST64_TYPE
 627 #define UINT_LEAST64_TYPE ((const char *) NULL)
 628 #endif
 629
 630 #ifndef INT_FAST8_TYPE
 631 #define INT_FAST8_TYPE ((const char *) NULL)
 632 #endif
 633
 634 #ifndef INT_FAST16_TYPE
 635 #define INT_FAST16_TYPE ((const char *) NULL)
 636 #endif
 637
 638 #ifndef INT_FAST32_TYPE
 639 #define INT_FAST32_TYPE ((const char *) NULL)
 640 #endif
 641
 642 #ifndef INT_FAST64_TYPE
 643 #define INT_FAST64_TYPE ((const char *) NULL)
 644 #endif
 645
 646 #ifndef UINT_FAST8_TYPE
 647 #define UINT_FAST8_TYPE ((const char *) NULL)
 648 #endif
 649
 650 #ifndef UINT_FAST16_TYPE
 651 #define UINT_FAST16_TYPE ((const char *) NULL)
 652 #endif
 653
 654 #ifndef UINT_FAST32_TYPE
 655 #define UINT_FAST32_TYPE ((const char *) NULL)
 656 #endif
 657
 658 #ifndef UINT_FAST64_TYPE
 659 #define UINT_FAST64_TYPE ((const char *) NULL)
 660 #endif
 661
 662 #ifndef INTPTR_TYPE
 663 #define INTPTR_TYPE ((const char *) NULL)
 664 #endif
 665
 666 #ifndef UINTPTR_TYPE
 667 #define UINTPTR_TYPE ((const char *) NULL)
 668 #endif
 669
 670 /* Width in bits of a pointer.  Mind the value of the macro `Pmode'.  */
 671 #ifndef POINTER_SIZE
 672 #define POINTER_SIZE BITS_PER_WORD
 673 #endif
 674
 675 #ifndef PIC_OFFSET_TABLE_REGNUM
 676 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
 677 #endif
 678
 679 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
 680 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
 681 #endif
 682
 683 #ifndef TARGET_DECLSPEC
 684 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
 685 /* If the target supports the "dllimport" attribute, users are
 686    probably used to the "__declspec" syntax.  */
 687 #define TARGET_DECLSPEC 1
 688 #else
 689 #define TARGET_DECLSPEC 0
 690 #endif
 691 #endif
 692
 693 /* By default, the preprocessor should be invoked the same way in C++
 694    as in C.  */
 695 #ifndef CPLUSPLUS_CPP_SPEC
 696 #ifdef CPP_SPEC
 697 #define CPLUSPLUS_CPP_SPEC CPP_SPEC
 698 #endif
 699 #endif
 700
 701 #ifndef ACCUMULATE_OUTGOING_ARGS
 702 #define ACCUMULATE_OUTGOING_ARGS 0
 703 #endif
 704
 705 /* Supply a default definition for PUSH_ARGS.  */
 706 #ifndef PUSH_ARGS
 707 #ifdef PUSH_ROUNDING
 708 #define PUSH_ARGS       !ACCUMULATE_OUTGOING_ARGS
 709 #else
 710 #define PUSH_ARGS       0
 711 #endif
 712 #endif
 713
 714 /* Decide whether a function's arguments should be processed
 715    from first to last or from last to first.
 716
 717    They should if the stack and args grow in opposite directions, but
 718    only if we have push insns.  */
 719
 720 #ifdef PUSH_ROUNDING
 721
 722 #ifndef PUSH_ARGS_REVERSED
 723 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
 724 #define PUSH_ARGS_REVERSED  PUSH_ARGS
 725 #endif
 726 #endif
 727
 728 #endif
 729
 730 #ifndef PUSH_ARGS_REVERSED
 731 #define PUSH_ARGS_REVERSED 0
 732 #endif
 733
 734 /* Default value for the alignment (in bits) a C conformant malloc has to
 735    provide. This default is intended to be safe and always correct.  */
 736 #ifndef MALLOC_ABI_ALIGNMENT
 737 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
 738 #endif
 739
 740 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
 741    STACK_BOUNDARY is required.  */
 742 #ifndef PREFERRED_STACK_BOUNDARY
 743 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
 744 #endif
 745
 746 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
 747    defined.  */
 748 #ifndef INCOMING_STACK_BOUNDARY
 749 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
 750 #endif
 751
 752 #ifndef TARGET_DEFAULT_PACK_STRUCT
 753 #define TARGET_DEFAULT_PACK_STRUCT 0
 754 #endif
 755
 756 /* By default, the C++ compiler will use function addresses in the
 757    vtable entries.  Setting this nonzero tells the compiler to use
 758    function descriptors instead.  The value of this macro says how
 759    many words wide the descriptor is (normally 2).  It is assumed
 760    that the address of a function descriptor may be treated as a
 761    pointer to a function.  */
 762 #ifndef TARGET_VTABLE_USES_DESCRIPTORS
 763 #define TARGET_VTABLE_USES_DESCRIPTORS 0
 764 #endif
 765
 766 /* By default, the vtable entries are void pointers, the so the alignment
 767    is the same as pointer alignment.  The value of this macro specifies
 768    the alignment of the vtable entry in bits.  It should be defined only
 769    when special alignment is necessary.  */
 770 #ifndef TARGET_VTABLE_ENTRY_ALIGN
 771 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
 772 #endif
 773
 774 /* There are a few non-descriptor entries in the vtable at offsets below
 775    zero.  If these entries must be padded (say, to preserve the alignment
 776    specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
 777    words in each data entry.  */
 778 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
 779 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
 780 #endif
 781
 782 /* Decide whether it is safe to use a local alias for a virtual function
 783    when constructing thunks.  */
 784 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
 785 #ifdef ASM_OUTPUT_DEF
 786 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
 787 #else
 788 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
 789 #endif
 790 #endif
 791
 792 /* Select a format to encode pointers in exception handling data.  We
 793    prefer those that result in fewer dynamic relocations.  Assume no
 794    special support here and encode direct references.  */
 795 #ifndef ASM_PREFERRED_EH_DATA_FORMAT
 796 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  DW_EH_PE_absptr
 797 #endif
 798
 799 /* By default, the C++ compiler will use the lowest bit of the pointer
 800    to function to indicate a pointer-to-member-function points to a
 801    virtual member function.  However, if FUNCTION_BOUNDARY indicates
 802    function addresses aren't always even, the lowest bit of the delta
 803    field will be used.  */
 804 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
 805 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
 806   (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
 807    ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
 808 #endif
 809
 810 #ifndef DEFAULT_GDB_EXTENSIONS
 811 #define DEFAULT_GDB_EXTENSIONS 1
 812 #endif
 813
 814 /* If more than one debugging type is supported, you must define
 815    PREFERRED_DEBUGGING_TYPE to choose the default.  */
 816
 817 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
 818          + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
 819          + defined (VMS_DEBUGGING_INFO))
 820 #ifndef PREFERRED_DEBUGGING_TYPE
 821 #error You must define PREFERRED_DEBUGGING_TYPE
 822 #endif /* no PREFERRED_DEBUGGING_TYPE */
 823
 824 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
 825    here so other code needn't care.  */
 826 #elif defined DBX_DEBUGGING_INFO
 827 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 828
 829 #elif defined SDB_DEBUGGING_INFO
 830 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
 831
 832 #elif defined DWARF2_DEBUGGING_INFO
 833 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 834
 835 #elif defined VMS_DEBUGGING_INFO
 836 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
 837
 838 #elif defined XCOFF_DEBUGGING_INFO
 839 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
 840
 841 #else
 842 /* No debugging format is supported by this target.  */
 843 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
 844 #endif
 845
 846 #ifndef LARGEST_EXPONENT_IS_NORMAL
 847 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
 848 #endif
 849
 850 #ifndef ROUND_TOWARDS_ZERO
 851 #define ROUND_TOWARDS_ZERO 0
 852 #endif
 853
 854 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
 855 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
 856 #endif
 857
 858 /* True if the targets integer-comparison functions return { 0, 1, 2
 859    } to indicate { <, ==, > }.  False if { -1, 0, 1 } is used
 860    instead.  The libgcc routines are biased.  */
 861 #ifndef TARGET_LIB_INT_CMP_BIASED
 862 #define TARGET_LIB_INT_CMP_BIASED (true)
 863 #endif
 864
 865 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
 866    then the word-endianness is the same as for integers.  */
 867 #ifndef FLOAT_WORDS_BIG_ENDIAN
 868 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 869 #endif
 870
 871 #ifdef TARGET_FLT_EVAL_METHOD
 872 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
 873 #else
 874 #define TARGET_FLT_EVAL_METHOD 0
 875 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
 876 #endif
 877
 878 #ifndef TARGET_DEC_EVAL_METHOD
 879 #define TARGET_DEC_EVAL_METHOD 2
 880 #endif
 881
 882 #ifndef HOT_TEXT_SECTION_NAME
 883 #define HOT_TEXT_SECTION_NAME ".text.hot"
 884 #endif
 885
 886 #ifndef UNLIKELY_EXECUTED_TEXT_SECTION_NAME
 887 #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME ".text.unlikely"
 888 #endif
 889
 890 #ifndef HAS_LONG_COND_BRANCH
 891 #define HAS_LONG_COND_BRANCH 0
 892 #endif
 893
 894 #ifndef HAS_LONG_UNCOND_BRANCH
 895 #define HAS_LONG_UNCOND_BRANCH 0
 896 #endif
 897
 898 /* By default, only attempt to parallelize bitwise operations, and
 899    possibly adds/subtracts using bit-twiddling.  */
 900 #ifndef UNITS_PER_SIMD_WORD
 901 #define UNITS_PER_SIMD_WORD(MODE) UNITS_PER_WORD
 902 #endif
 903
 904 /* Determine whether __cxa_atexit, rather than atexit, is used to
 905    register C++ destructors for local statics and global objects.  */
 906 #ifndef DEFAULT_USE_CXA_ATEXIT
 907 #define DEFAULT_USE_CXA_ATEXIT 0
 908 #endif
 909
 910 /* If none of these macros are defined, the port must use the new
 911    technique of defining constraints in the machine description.
 912    tm_p.h will define those macros that machine-independent code
 913    still uses.  */
 914 #if  !defined CONSTRAINT_LEN                    \
 915   && !defined REG_CLASS_FROM_LETTER             \
 916   && !defined REG_CLASS_FROM_CONSTRAINT         \
 917   && !defined CONST_OK_FOR_LETTER_P             \
 918   && !defined CONST_OK_FOR_CONSTRAINT_P         \
 919   && !defined CONST_DOUBLE_OK_FOR_LETTER_P      \
 920   && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P  \
 921   && !defined EXTRA_CONSTRAINT                  \
 922   && !defined EXTRA_CONSTRAINT_STR              \
 923   && !defined EXTRA_MEMORY_CONSTRAINT           \
 924   && !defined EXTRA_ADDRESS_CONSTRAINT
 925
 926 #define USE_MD_CONSTRAINTS
 927
 928 #if GCC_VERSION >= 3000 && defined IN_GCC
 929 /* These old constraint macros shouldn't appear anywhere in a
 930    configuration using MD constraint definitions.  */
 931 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
 932                    CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
 933 #endif
 934
 935 #else /* old constraint mechanism in use */
 936
 937 /* Determine whether extra constraint letter should be handled
 938    via address reload (like 'o').  */
 939 #ifndef EXTRA_MEMORY_CONSTRAINT
 940 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
 941 #endif
 942
 943 /* Determine whether extra constraint letter should be handled
 944    as an address (like 'p').  */
 945 #ifndef EXTRA_ADDRESS_CONSTRAINT
 946 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
 947 #endif
 948
 949 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
 950    for all the characters that it does not want to change, so things like the
 951   'length' of a digit in a matching constraint is an implementation detail,
 952    and not part of the interface.  */
 953 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1
 954
 955 #ifndef CONSTRAINT_LEN
 956 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
 957 #endif
 958
 959 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
 960 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
 961 #endif
 962
 963 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
 964 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
 965   CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
 966 #endif
 967
 968 #ifndef REG_CLASS_FROM_CONSTRAINT
 969 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
 970 #endif
 971
 972 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
 973 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
 974 #endif
 975
 976 #endif /* old constraint mechanism in use */
 977
 978 #ifndef REGISTER_MOVE_COST
 979 #define REGISTER_MOVE_COST(m, x, y) 2
 980 #endif
 981
 982 /* Determine whether the entire c99 runtime
 983    is present in the runtime library.  */
 984 #ifndef TARGET_C99_FUNCTIONS
 985 #define TARGET_C99_FUNCTIONS 0
 986 #endif
 987
 988 /* Determine whether the target runtime library has
 989    a sincos implementation following the GNU extension.  */
 990 #ifndef TARGET_HAS_SINCOS
 991 #define TARGET_HAS_SINCOS 0
 992 #endif
 993
 994 /* Indicate that CLZ and CTZ are undefined at zero.  */
 995 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
 996 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0
 997 #endif
 998 #ifndef CTZ_DEFINED_VALUE_AT_ZERO
 999 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0
1000 #endif
1001
1002 /* Provide a default value for STORE_FLAG_VALUE.  */
1003 #ifndef STORE_FLAG_VALUE
1004 #define STORE_FLAG_VALUE  1
1005 #endif
1006
1007 /* This macro is used to determine what the largest unit size that
1008    move_by_pieces can use is.  */
1009
1010 /* MOVE_MAX_PIECES is the number of bytes at a time which we can
1011    move efficiently, as opposed to  MOVE_MAX which is the maximum
1012    number of bytes we can move with a single instruction.  */
1013
1014 #ifndef MOVE_MAX_PIECES
1015 #define MOVE_MAX_PIECES   MOVE_MAX
1016 #endif
1017
1018 #ifndef STACK_POINTER_OFFSET
1019 #define STACK_POINTER_OFFSET    0
1020 #endif
1021
1022 #ifndef LOCAL_REGNO
1023 #define LOCAL_REGNO(REGNO)  0
1024 #endif
1025
1026 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1027    the stack pointer does not matter.  The value is tested only in
1028    functions that have frame pointers.  */
1029 #ifndef EXIT_IGNORE_STACK
1030 #define EXIT_IGNORE_STACK 0
1031 #endif
1032
1033 /* Assume that case vectors are not pc-relative.  */
1034 #ifndef CASE_VECTOR_PC_RELATIVE
1035 #define CASE_VECTOR_PC_RELATIVE 0
1036 #endif
1037
1038 /* Assume that trampolines need function alignment.  */
1039 #ifndef TRAMPOLINE_ALIGNMENT
1040 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1041 #endif
1042
1043 /* Register mappings for target machines without register windows.  */
1044 #ifndef INCOMING_REGNO
1045 #define INCOMING_REGNO(N) (N)
1046 #endif
1047
1048 #ifndef OUTGOING_REGNO
1049 #define OUTGOING_REGNO(N) (N)
1050 #endif
1051
1052 #ifndef SHIFT_COUNT_TRUNCATED
1053 #define SHIFT_COUNT_TRUNCATED 0
1054 #endif
1055
1056 #ifndef LEGITIMATE_PIC_OPERAND_P
1057 #define LEGITIMATE_PIC_OPERAND_P(X) 1
1058 #endif
1059
1060 #ifndef TARGET_MEM_CONSTRAINT
1061 #define TARGET_MEM_CONSTRAINT 'm'
1062 #endif
1063
1064 #ifndef REVERSIBLE_CC_MODE
1065 #define REVERSIBLE_CC_MODE(MODE) 0
1066 #endif
1067
1068 /* Biggest alignment supported by the object file format of this machine.  */
1069 #ifndef MAX_OFILE_ALIGNMENT
1070 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1071 #endif
1072
1073 #ifndef FRAME_GROWS_DOWNWARD
1074 #define FRAME_GROWS_DOWNWARD 0
1075 #endif
1076
1077 /* On most machines, the CFA coincides with the first incoming parm.  */
1078 #ifndef ARG_POINTER_CFA_OFFSET
1079 #define ARG_POINTER_CFA_OFFSET(FNDECL) FIRST_PARM_OFFSET (FNDECL)
1080 #endif
1081
1082 /* On most machines, we use the CFA as DW_AT_frame_base.  */
1083 #ifndef CFA_FRAME_BASE_OFFSET
1084 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1085 #endif
1086
1087 /* The offset from the incoming value of %sp to the top of the stack frame
1088    for the current function.  */
1089 #ifndef INCOMING_FRAME_SP_OFFSET
1090 #define INCOMING_FRAME_SP_OFFSET 0
1091 #endif
1092
1093 #ifndef HARD_REGNO_NREGS_HAS_PADDING
1094 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1095 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1096 #endif
1097
1098 #ifndef OUTGOING_REG_PARM_STACK_SPACE
1099 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1100 #endif
1101
1102 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1103    the backend.  MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1104    effort stack alignment supported by the backend.  If the backend
1105    supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1106    MAX_STACK_ALIGNMENT are the same.  Otherwise, the incoming stack
1107    boundary will limit the maximum guaranteed stack alignment.  */
1108 #ifdef MAX_STACK_ALIGNMENT
1109 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1110 #else
1111 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1112 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1113 #endif
1114
1115 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1116
1117 #ifndef LOCAL_ALIGNMENT
1118 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1119 #endif
1120
1121 #ifndef STACK_SLOT_ALIGNMENT
1122 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1123   ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1124 #endif
1125
1126 #ifndef LOCAL_DECL_ALIGNMENT
1127 #define LOCAL_DECL_ALIGNMENT(DECL) \
1128   LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1129 #endif
1130
1131 /* Alignment value for attribute ((aligned)).  */
1132 #ifndef ATTRIBUTE_ALIGNED_VALUE
1133 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1134 #endif
1135
1136 /* Many ports have no mode-dependent addresses (except possibly autoincrement
1137    and autodecrement addresses, which are handled by target-independent code
1138    in recog.c).  */
1139 #ifndef GO_IF_MODE_DEPENDENT_ADDRESS
1140 #define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN)
1141 #endif
1142
1143 #ifndef FRAME_POINTER_REQUIRED
1144 #define FRAME_POINTER_REQUIRED false
1145 #endif
1146
1147 #endif  /* ! GCC_DEFAULTS_H */