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 the discriminator
 259    attribute in the .loc directive.  */
 260 #ifndef SUPPORTS_DISCRIMINATOR
 261 #ifdef HAVE_GAS_DISCRIMINATOR
 262 #define SUPPORTS_DISCRIMINATOR 1
 263 #else
 264 #define SUPPORTS_DISCRIMINATOR 0
 265 #endif
 266 #endif
 267
 268 /* This determines whether or not we support link-once semantics.  */
 269 #ifndef SUPPORTS_ONE_ONLY
 270 #ifdef MAKE_DECL_ONE_ONLY
 271 #define SUPPORTS_ONE_ONLY 1
 272 #else
 273 #define SUPPORTS_ONE_ONLY 0
 274 #endif
 275 #endif
 276
 277 /* This determines whether weak symbols must be left out of a static
 278    archive's table of contents.  Defining this macro to be nonzero has
 279    the consequence that certain symbols will not be made weak that
 280    otherwise would be.  The C++ ABI requires this macro to be zero;
 281    see the documentation.  */
 282 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 283 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
 284 #endif
 285
 286 /* This determines whether or not we need linkonce unwind information.  */
 287 #ifndef TARGET_USES_WEAK_UNWIND_INFO
 288 #define TARGET_USES_WEAK_UNWIND_INFO 0
 289 #endif
 290
 291 /* By default, there is no prefix on user-defined symbols.  */
 292 #ifndef USER_LABEL_PREFIX
 293 #define USER_LABEL_PREFIX ""
 294 #endif
 295
 296 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
 297    provide a weak attribute.  Else define it to nothing.
 298
 299    This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
 300    not available at that time.
 301
 302    Note, this is only for use by target files which we know are to be
 303    compiled by GCC.  */
 304 #ifndef TARGET_ATTRIBUTE_WEAK
 305 # if SUPPORTS_WEAK
 306 #  define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
 307 # else
 308 #  define TARGET_ATTRIBUTE_WEAK
 309 # endif
 310 #endif
 311
 312 /* Determines whether we may use common symbols to represent one-only
 313    semantics (a.k.a. "vague linkage").  */
 314 #ifndef USE_COMMON_FOR_ONE_ONLY
 315 # define USE_COMMON_FOR_ONE_ONLY 1
 316 #endif
 317
 318 /* By default we can assume that all global symbols are in one namespace,
 319    across all shared libraries.  */
 320 #ifndef MULTIPLE_SYMBOL_SPACES
 321 # define MULTIPLE_SYMBOL_SPACES 0
 322 #endif
 323
 324 /* If the target supports init_priority C++ attribute, give
 325    SUPPORTS_INIT_PRIORITY a nonzero value.  */
 326 #ifndef SUPPORTS_INIT_PRIORITY
 327 #define SUPPORTS_INIT_PRIORITY 1
 328 #endif /* SUPPORTS_INIT_PRIORITY */
 329
 330 /* If duplicate library search directories can be removed from a
 331    linker command without changing the linker's semantics, give this
 332    symbol a nonzero.  */
 333 #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
 334 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
 335 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
 336
 337 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
 338    the rest of the DWARF 2 frame unwind support is also provided.  */
 339 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) \
 340     && !defined (TARGET_UNWIND_INFO)
 341 #define DWARF2_UNWIND_INFO 1
 342 #endif
 343
 344 /* If we have named sections, and we're using crtstuff to run ctors,
 345    use them for registering eh frame information.  */
 346 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
 347     && !defined(EH_FRAME_IN_DATA_SECTION)
 348 #ifndef EH_FRAME_SECTION_NAME
 349 #define EH_FRAME_SECTION_NAME ".eh_frame"
 350 #endif
 351 #endif
 352
 353 /* On many systems, different EH table encodings are used under
 354    difference circumstances.  Some will require runtime relocations;
 355    some will not.  For those that do not require runtime relocations,
 356    we would like to make the table read-only.  However, since the
 357    read-only tables may need to be combined with read-write tables
 358    that do require runtime relocation, it is not safe to make the
 359    tables read-only unless the linker will merge read-only and
 360    read-write sections into a single read-write section.  If your
 361    linker does not have this ability, but your system is such that no
 362    encoding used with non-PIC code will ever require a runtime
 363    relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
 364    your target configuration file.  */
 365 #ifndef EH_TABLES_CAN_BE_READ_ONLY
 366 #ifdef HAVE_LD_RO_RW_SECTION_MIXING
 367 #define EH_TABLES_CAN_BE_READ_ONLY 1
 368 #else
 369 #define EH_TABLES_CAN_BE_READ_ONLY 0
 370 #endif
 371 #endif
 372
 373 /* If we have named section and we support weak symbols, then use the
 374    .jcr section for recording java classes which need to be registered
 375    at program start-up time.  */
 376 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
 377 #ifndef JCR_SECTION_NAME
 378 #define JCR_SECTION_NAME ".jcr"
 379 #endif
 380 #endif
 381
 382 /* This decision to use a .jcr section can be overridden by defining
 383    USE_JCR_SECTION to 0 in target file.  This is necessary if target
 384    can define JCR_SECTION_NAME but does not have crtstuff or
 385    linker support for .jcr section.  */
 386 #ifndef TARGET_USE_JCR_SECTION
 387 #ifdef JCR_SECTION_NAME
 388 #define TARGET_USE_JCR_SECTION 1
 389 #else
 390 #define TARGET_USE_JCR_SECTION 0
 391 #endif
 392 #endif
 393
 394 /* Number of hardware registers that go into the DWARF-2 unwind info.
 395    If not defined, equals FIRST_PSEUDO_REGISTER  */
 396
 397 #ifndef DWARF_FRAME_REGISTERS
 398 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
 399 #endif
 400
 401 /* How to renumber registers for dbx and gdb.  If not defined, assume
 402    no renumbering is necessary.  */
 403
 404 #ifndef DBX_REGISTER_NUMBER
 405 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
 406 #endif
 407
 408 /* Default sizes for base C types.  If the sizes are different for
 409    your target, you should override these values by defining the
 410    appropriate symbols in your tm.h file.  */
 411
 412 #ifndef BITS_PER_UNIT
 413 #define BITS_PER_UNIT 8
 414 #endif
 415
 416 #ifndef BITS_PER_WORD
 417 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
 418 #endif
 419
 420 #ifndef CHAR_TYPE_SIZE
 421 #define CHAR_TYPE_SIZE BITS_PER_UNIT
 422 #endif
 423
 424 #ifndef BOOL_TYPE_SIZE
 425 /* `bool' has size and alignment `1', on almost all platforms.  */
 426 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
 427 #endif
 428
 429 #ifndef SHORT_TYPE_SIZE
 430 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
 431 #endif
 432
 433 #ifndef INT_TYPE_SIZE
 434 #define INT_TYPE_SIZE BITS_PER_WORD
 435 #endif
 436
 437 #ifndef LONG_TYPE_SIZE
 438 #define LONG_TYPE_SIZE BITS_PER_WORD
 439 #endif
 440
 441 #ifndef LONG_LONG_TYPE_SIZE
 442 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
 443 #endif
 444
 445 #ifndef WCHAR_TYPE_SIZE
 446 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
 447 #endif
 448
 449 #ifndef FLOAT_TYPE_SIZE
 450 #define FLOAT_TYPE_SIZE BITS_PER_WORD
 451 #endif
 452
 453 #ifndef DOUBLE_TYPE_SIZE
 454 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
 455 #endif
 456
 457 #ifndef LONG_DOUBLE_TYPE_SIZE
 458 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
 459 #endif
 460
 461 #ifndef DECIMAL32_TYPE_SIZE
 462 #define DECIMAL32_TYPE_SIZE 32
 463 #endif
 464
 465 #ifndef DECIMAL64_TYPE_SIZE
 466 #define DECIMAL64_TYPE_SIZE 64
 467 #endif
 468
 469 #ifndef DECIMAL128_TYPE_SIZE
 470 #define DECIMAL128_TYPE_SIZE 128
 471 #endif
 472
 473 #ifndef SHORT_FRACT_TYPE_SIZE
 474 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
 475 #endif
 476
 477 #ifndef FRACT_TYPE_SIZE
 478 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
 479 #endif
 480
 481 #ifndef LONG_FRACT_TYPE_SIZE
 482 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
 483 #endif
 484
 485 #ifndef LONG_LONG_FRACT_TYPE_SIZE
 486 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
 487 #endif
 488
 489 #ifndef SHORT_ACCUM_TYPE_SIZE
 490 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
 491 #endif
 492
 493 #ifndef ACCUM_TYPE_SIZE
 494 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
 495 #endif
 496
 497 #ifndef LONG_ACCUM_TYPE_SIZE
 498 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
 499 #endif
 500
 501 #ifndef LONG_LONG_ACCUM_TYPE_SIZE
 502 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
 503 #endif
 504
 505 /* We let tm.h override the types used here, to handle trivial differences
 506    such as the choice of unsigned int or long unsigned int for size_t.
 507    When machines start needing nontrivial differences in the size type,
 508    it would be best to do something here to figure out automatically
 509    from other information what type to use.  */
 510
 511 #ifndef SIZE_TYPE
 512 #define SIZE_TYPE "long unsigned int"
 513 #endif
 514
 515 #ifndef PID_TYPE
 516 #define PID_TYPE "int"
 517 #endif
 518
 519 /* If GCC knows the exact uint_least16_t and uint_least32_t types from
 520    <stdint.h>, use them for char16_t and char32_t.  Otherwise, use
 521    these guesses; getting the wrong type of a given width will not
 522    affect C++ name mangling because in C++ these are distinct types
 523    not typedefs.  */
 524
 525 #ifdef UINT_LEAST16_TYPE
 526 #define CHAR16_TYPE UINT_LEAST16_TYPE
 527 #else
 528 #define CHAR16_TYPE "short unsigned int"
 529 #endif
 530
 531 #ifdef UINT_LEAST32_TYPE
 532 #define CHAR32_TYPE UINT_LEAST32_TYPE
 533 #else
 534 #define CHAR32_TYPE "unsigned int"
 535 #endif
 536
 537 #ifndef WCHAR_TYPE
 538 #define WCHAR_TYPE "int"
 539 #endif
 540
 541 /* WCHAR_TYPE gets overridden by -fshort-wchar.  */
 542 #define MODIFIED_WCHAR_TYPE \
 543         (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
 544
 545 #ifndef PTRDIFF_TYPE
 546 #define PTRDIFF_TYPE "long int"
 547 #endif
 548
 549 #ifndef WINT_TYPE
 550 #define WINT_TYPE "unsigned int"
 551 #endif
 552
 553 #ifndef INTMAX_TYPE
 554 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE)     \
 555                      ? "int"                                    \
 556                      : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
 557                         ? "long int"                            \
 558                         : "long long int"))
 559 #endif
 560
 561 #ifndef UINTMAX_TYPE
 562 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE)    \
 563                      ? "unsigned int"                           \
 564                      : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
 565                         ? "long unsigned int"                   \
 566                         : "long long unsigned int"))
 567 #endif
 568
 569
 570 /* There are no default definitions of these <stdint.h> types.  */
 571
 572 #ifndef SIG_ATOMIC_TYPE
 573 #define SIG_ATOMIC_TYPE ((const char *) NULL)
 574 #endif
 575
 576 #ifndef INT8_TYPE
 577 #define INT8_TYPE ((const char *) NULL)
 578 #endif
 579
 580 #ifndef INT16_TYPE
 581 #define INT16_TYPE ((const char *) NULL)
 582 #endif
 583
 584 #ifndef INT32_TYPE
 585 #define INT32_TYPE ((const char *) NULL)
 586 #endif
 587
 588 #ifndef INT64_TYPE
 589 #define INT64_TYPE ((const char *) NULL)
 590 #endif
 591
 592 #ifndef UINT8_TYPE
 593 #define UINT8_TYPE ((const char *) NULL)
 594 #endif
 595
 596 #ifndef UINT16_TYPE
 597 #define UINT16_TYPE ((const char *) NULL)
 598 #endif
 599
 600 #ifndef UINT32_TYPE
 601 #define UINT32_TYPE ((const char *) NULL)
 602 #endif
 603
 604 #ifndef UINT64_TYPE
 605 #define UINT64_TYPE ((const char *) NULL)
 606 #endif
 607
 608 #ifndef INT_LEAST8_TYPE
 609 #define INT_LEAST8_TYPE ((const char *) NULL)
 610 #endif
 611
 612 #ifndef INT_LEAST16_TYPE
 613 #define INT_LEAST16_TYPE ((const char *) NULL)
 614 #endif
 615
 616 #ifndef INT_LEAST32_TYPE
 617 #define INT_LEAST32_TYPE ((const char *) NULL)
 618 #endif
 619
 620 #ifndef INT_LEAST64_TYPE
 621 #define INT_LEAST64_TYPE ((const char *) NULL)
 622 #endif
 623
 624 #ifndef UINT_LEAST8_TYPE
 625 #define UINT_LEAST8_TYPE ((const char *) NULL)
 626 #endif
 627
 628 #ifndef UINT_LEAST16_TYPE
 629 #define UINT_LEAST16_TYPE ((const char *) NULL)
 630 #endif
 631
 632 #ifndef UINT_LEAST32_TYPE
 633 #define UINT_LEAST32_TYPE ((const char *) NULL)
 634 #endif
 635
 636 #ifndef UINT_LEAST64_TYPE
 637 #define UINT_LEAST64_TYPE ((const char *) NULL)
 638 #endif
 639
 640 #ifndef INT_FAST8_TYPE
 641 #define INT_FAST8_TYPE ((const char *) NULL)
 642 #endif
 643
 644 #ifndef INT_FAST16_TYPE
 645 #define INT_FAST16_TYPE ((const char *) NULL)
 646 #endif
 647
 648 #ifndef INT_FAST32_TYPE
 649 #define INT_FAST32_TYPE ((const char *) NULL)
 650 #endif
 651
 652 #ifndef INT_FAST64_TYPE
 653 #define INT_FAST64_TYPE ((const char *) NULL)
 654 #endif
 655
 656 #ifndef UINT_FAST8_TYPE
 657 #define UINT_FAST8_TYPE ((const char *) NULL)
 658 #endif
 659
 660 #ifndef UINT_FAST16_TYPE
 661 #define UINT_FAST16_TYPE ((const char *) NULL)
 662 #endif
 663
 664 #ifndef UINT_FAST32_TYPE
 665 #define UINT_FAST32_TYPE ((const char *) NULL)
 666 #endif
 667
 668 #ifndef UINT_FAST64_TYPE
 669 #define UINT_FAST64_TYPE ((const char *) NULL)
 670 #endif
 671
 672 #ifndef INTPTR_TYPE
 673 #define INTPTR_TYPE ((const char *) NULL)
 674 #endif
 675
 676 #ifndef UINTPTR_TYPE
 677 #define UINTPTR_TYPE ((const char *) NULL)
 678 #endif
 679
 680 /* Width in bits of a pointer.  Mind the value of the macro `Pmode'.  */
 681 #ifndef POINTER_SIZE
 682 #define POINTER_SIZE BITS_PER_WORD
 683 #endif
 684
 685 #ifndef PIC_OFFSET_TABLE_REGNUM
 686 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
 687 #endif
 688
 689 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
 690 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
 691 #endif
 692
 693 #ifndef TARGET_DECLSPEC
 694 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
 695 /* If the target supports the "dllimport" attribute, users are
 696    probably used to the "__declspec" syntax.  */
 697 #define TARGET_DECLSPEC 1
 698 #else
 699 #define TARGET_DECLSPEC 0
 700 #endif
 701 #endif
 702
 703 /* By default, the preprocessor should be invoked the same way in C++
 704    as in C.  */
 705 #ifndef CPLUSPLUS_CPP_SPEC
 706 #ifdef CPP_SPEC
 707 #define CPLUSPLUS_CPP_SPEC CPP_SPEC
 708 #endif
 709 #endif
 710
 711 #ifndef ACCUMULATE_OUTGOING_ARGS
 712 #define ACCUMULATE_OUTGOING_ARGS 0
 713 #endif
 714
 715 /* Supply a default definition for PUSH_ARGS.  */
 716 #ifndef PUSH_ARGS
 717 #ifdef PUSH_ROUNDING
 718 #define PUSH_ARGS       !ACCUMULATE_OUTGOING_ARGS
 719 #else
 720 #define PUSH_ARGS       0
 721 #endif
 722 #endif
 723
 724 /* Decide whether a function's arguments should be processed
 725    from first to last or from last to first.
 726
 727    They should if the stack and args grow in opposite directions, but
 728    only if we have push insns.  */
 729
 730 #ifdef PUSH_ROUNDING
 731
 732 #ifndef PUSH_ARGS_REVERSED
 733 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
 734 #define PUSH_ARGS_REVERSED  PUSH_ARGS
 735 #endif
 736 #endif
 737
 738 #endif
 739
 740 #ifndef PUSH_ARGS_REVERSED
 741 #define PUSH_ARGS_REVERSED 0
 742 #endif
 743
 744 /* Default value for the alignment (in bits) a C conformant malloc has to
 745    provide. This default is intended to be safe and always correct.  */
 746 #ifndef MALLOC_ABI_ALIGNMENT
 747 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
 748 #endif
 749
 750 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
 751    STACK_BOUNDARY is required.  */
 752 #ifndef PREFERRED_STACK_BOUNDARY
 753 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
 754 #endif
 755
 756 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
 757    defined.  */
 758 #ifndef INCOMING_STACK_BOUNDARY
 759 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
 760 #endif
 761
 762 #ifndef TARGET_DEFAULT_PACK_STRUCT
 763 #define TARGET_DEFAULT_PACK_STRUCT 0
 764 #endif
 765
 766 /* By default, the C++ compiler will use function addresses in the
 767    vtable entries.  Setting this nonzero tells the compiler to use
 768    function descriptors instead.  The value of this macro says how
 769    many words wide the descriptor is (normally 2).  It is assumed
 770    that the address of a function descriptor may be treated as a
 771    pointer to a function.  */
 772 #ifndef TARGET_VTABLE_USES_DESCRIPTORS
 773 #define TARGET_VTABLE_USES_DESCRIPTORS 0
 774 #endif
 775
 776 /* By default, the vtable entries are void pointers, the so the alignment
 777    is the same as pointer alignment.  The value of this macro specifies
 778    the alignment of the vtable entry in bits.  It should be defined only
 779    when special alignment is necessary.  */
 780 #ifndef TARGET_VTABLE_ENTRY_ALIGN
 781 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
 782 #endif
 783
 784 /* There are a few non-descriptor entries in the vtable at offsets below
 785    zero.  If these entries must be padded (say, to preserve the alignment
 786    specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
 787    words in each data entry.  */
 788 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
 789 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
 790 #endif
 791
 792 /* Decide whether it is safe to use a local alias for a virtual function
 793    when constructing thunks.  */
 794 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
 795 #ifdef ASM_OUTPUT_DEF
 796 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
 797 #else
 798 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
 799 #endif
 800 #endif
 801
 802 /* Select a format to encode pointers in exception handling data.  We
 803    prefer those that result in fewer dynamic relocations.  Assume no
 804    special support here and encode direct references.  */
 805 #ifndef ASM_PREFERRED_EH_DATA_FORMAT
 806 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  DW_EH_PE_absptr
 807 #endif
 808
 809 /* By default, the C++ compiler will use the lowest bit of the pointer
 810    to function to indicate a pointer-to-member-function points to a
 811    virtual member function.  However, if FUNCTION_BOUNDARY indicates
 812    function addresses aren't always even, the lowest bit of the delta
 813    field will be used.  */
 814 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
 815 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
 816   (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
 817    ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
 818 #endif
 819
 820 #ifndef DEFAULT_GDB_EXTENSIONS
 821 #define DEFAULT_GDB_EXTENSIONS 1
 822 #endif
 823
 824 /* If more than one debugging type is supported, you must define
 825    PREFERRED_DEBUGGING_TYPE to choose the default.  */
 826
 827 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
 828          + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
 829          + defined (VMS_DEBUGGING_INFO))
 830 #ifndef PREFERRED_DEBUGGING_TYPE
 831 #error You must define PREFERRED_DEBUGGING_TYPE
 832 #endif /* no PREFERRED_DEBUGGING_TYPE */
 833
 834 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
 835    here so other code needn't care.  */
 836 #elif defined DBX_DEBUGGING_INFO
 837 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 838
 839 #elif defined SDB_DEBUGGING_INFO
 840 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
 841
 842 #elif defined DWARF2_DEBUGGING_INFO
 843 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 844
 845 #elif defined VMS_DEBUGGING_INFO
 846 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
 847
 848 #elif defined XCOFF_DEBUGGING_INFO
 849 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
 850
 851 #else
 852 /* No debugging format is supported by this target.  */
 853 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
 854 #endif
 855
 856 #ifndef LARGEST_EXPONENT_IS_NORMAL
 857 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
 858 #endif
 859
 860 #ifndef ROUND_TOWARDS_ZERO
 861 #define ROUND_TOWARDS_ZERO 0
 862 #endif
 863
 864 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
 865 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
 866 #endif
 867
 868 /* True if the targets integer-comparison functions return { 0, 1, 2
 869    } to indicate { <, ==, > }.  False if { -1, 0, 1 } is used
 870    instead.  The libgcc routines are biased.  */
 871 #ifndef TARGET_LIB_INT_CMP_BIASED
 872 #define TARGET_LIB_INT_CMP_BIASED (true)
 873 #endif
 874
 875 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
 876    then the word-endianness is the same as for integers.  */
 877 #ifndef FLOAT_WORDS_BIG_ENDIAN
 878 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 879 #endif
 880
 881 #ifdef TARGET_FLT_EVAL_METHOD
 882 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
 883 #else
 884 #define TARGET_FLT_EVAL_METHOD 0
 885 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
 886 #endif
 887
 888 #ifndef TARGET_DEC_EVAL_METHOD
 889 #define TARGET_DEC_EVAL_METHOD 2
 890 #endif
 891
 892 #ifndef HOT_TEXT_SECTION_NAME
 893 #define HOT_TEXT_SECTION_NAME ".text.hot"
 894 #endif
 895
 896 #ifndef UNLIKELY_EXECUTED_TEXT_SECTION_NAME
 897 #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME ".text.unlikely"
 898 #endif
 899
 900 #ifndef HAS_LONG_COND_BRANCH
 901 #define HAS_LONG_COND_BRANCH 0
 902 #endif
 903
 904 #ifndef HAS_LONG_UNCOND_BRANCH
 905 #define HAS_LONG_UNCOND_BRANCH 0
 906 #endif
 907
 908 /* By default, only attempt to parallelize bitwise operations, and
 909    possibly adds/subtracts using bit-twiddling.  */
 910 #ifndef UNITS_PER_SIMD_WORD
 911 #define UNITS_PER_SIMD_WORD(MODE) UNITS_PER_WORD
 912 #endif
 913
 914 /* Determine whether __cxa_atexit, rather than atexit, is used to
 915    register C++ destructors for local statics and global objects.  */
 916 #ifndef DEFAULT_USE_CXA_ATEXIT
 917 #define DEFAULT_USE_CXA_ATEXIT 0
 918 #endif
 919
 920 /* If none of these macros are defined, the port must use the new
 921    technique of defining constraints in the machine description.
 922    tm_p.h will define those macros that machine-independent code
 923    still uses.  */
 924 #if  !defined CONSTRAINT_LEN                    \
 925   && !defined REG_CLASS_FROM_LETTER             \
 926   && !defined REG_CLASS_FROM_CONSTRAINT         \
 927   && !defined CONST_OK_FOR_LETTER_P             \
 928   && !defined CONST_OK_FOR_CONSTRAINT_P         \
 929   && !defined CONST_DOUBLE_OK_FOR_LETTER_P      \
 930   && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P  \
 931   && !defined EXTRA_CONSTRAINT                  \
 932   && !defined EXTRA_CONSTRAINT_STR              \
 933   && !defined EXTRA_MEMORY_CONSTRAINT           \
 934   && !defined EXTRA_ADDRESS_CONSTRAINT
 935
 936 #define USE_MD_CONSTRAINTS
 937
 938 #if GCC_VERSION >= 3000 && defined IN_GCC
 939 /* These old constraint macros shouldn't appear anywhere in a
 940    configuration using MD constraint definitions.  */
 941 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
 942                    CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
 943 #endif
 944
 945 #else /* old constraint mechanism in use */
 946
 947 /* Determine whether extra constraint letter should be handled
 948    via address reload (like 'o').  */
 949 #ifndef EXTRA_MEMORY_CONSTRAINT
 950 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
 951 #endif
 952
 953 /* Determine whether extra constraint letter should be handled
 954    as an address (like 'p').  */
 955 #ifndef EXTRA_ADDRESS_CONSTRAINT
 956 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
 957 #endif
 958
 959 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
 960    for all the characters that it does not want to change, so things like the
 961   'length' of a digit in a matching constraint is an implementation detail,
 962    and not part of the interface.  */
 963 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1
 964
 965 #ifndef CONSTRAINT_LEN
 966 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
 967 #endif
 968
 969 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
 970 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
 971 #endif
 972
 973 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
 974 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
 975   CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
 976 #endif
 977
 978 #ifndef REG_CLASS_FROM_CONSTRAINT
 979 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
 980 #endif
 981
 982 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
 983 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
 984 #endif
 985
 986 #endif /* old constraint mechanism in use */
 987
 988 #ifndef REGISTER_MOVE_COST
 989 #define REGISTER_MOVE_COST(m, x, y) 2
 990 #endif
 991
 992 /* Determine whether the entire c99 runtime
 993    is present in the runtime library.  */
 994 #ifndef TARGET_C99_FUNCTIONS
 995 #define TARGET_C99_FUNCTIONS 0
 996 #endif
 997
 998 /* Determine whether the target runtime library has
 999    a sincos implementation following the GNU extension.  */
1000 #ifndef TARGET_HAS_SINCOS
1001 #define TARGET_HAS_SINCOS 0
1002 #endif
1003
1004 /* Indicate that CLZ and CTZ are undefined at zero.  */
1005 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
1006 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0
1007 #endif
1008 #ifndef CTZ_DEFINED_VALUE_AT_ZERO
1009 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0
1010 #endif
1011
1012 /* Provide a default value for STORE_FLAG_VALUE.  */
1013 #ifndef STORE_FLAG_VALUE
1014 #define STORE_FLAG_VALUE  1
1015 #endif
1016
1017 /* This macro is used to determine what the largest unit size that
1018    move_by_pieces can use is.  */
1019
1020 /* MOVE_MAX_PIECES is the number of bytes at a time which we can
1021    move efficiently, as opposed to  MOVE_MAX which is the maximum
1022    number of bytes we can move with a single instruction.  */
1023
1024 #ifndef MOVE_MAX_PIECES
1025 #define MOVE_MAX_PIECES   MOVE_MAX
1026 #endif
1027
1028 #ifndef STACK_POINTER_OFFSET
1029 #define STACK_POINTER_OFFSET    0
1030 #endif
1031
1032 #ifndef LOCAL_REGNO
1033 #define LOCAL_REGNO(REGNO)  0
1034 #endif
1035
1036 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1037    the stack pointer does not matter.  The value is tested only in
1038    functions that have frame pointers.  */
1039 #ifndef EXIT_IGNORE_STACK
1040 #define EXIT_IGNORE_STACK 0
1041 #endif
1042
1043 /* Assume that case vectors are not pc-relative.  */
1044 #ifndef CASE_VECTOR_PC_RELATIVE
1045 #define CASE_VECTOR_PC_RELATIVE 0
1046 #endif
1047
1048 /* Assume that trampolines need function alignment.  */
1049 #ifndef TRAMPOLINE_ALIGNMENT
1050 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1051 #endif
1052
1053 /* Register mappings for target machines without register windows.  */
1054 #ifndef INCOMING_REGNO
1055 #define INCOMING_REGNO(N) (N)
1056 #endif
1057
1058 #ifndef OUTGOING_REGNO
1059 #define OUTGOING_REGNO(N) (N)
1060 #endif
1061
1062 #ifndef SHIFT_COUNT_TRUNCATED
1063 #define SHIFT_COUNT_TRUNCATED 0
1064 #endif
1065
1066 #ifndef LEGITIMATE_PIC_OPERAND_P
1067 #define LEGITIMATE_PIC_OPERAND_P(X) 1
1068 #endif
1069
1070 #ifndef TARGET_MEM_CONSTRAINT
1071 #define TARGET_MEM_CONSTRAINT 'm'
1072 #endif
1073
1074 #ifndef REVERSIBLE_CC_MODE
1075 #define REVERSIBLE_CC_MODE(MODE) 0
1076 #endif
1077
1078 /* Biggest alignment supported by the object file format of this machine.  */
1079 #ifndef MAX_OFILE_ALIGNMENT
1080 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1081 #endif
1082
1083 #ifndef FRAME_GROWS_DOWNWARD
1084 #define FRAME_GROWS_DOWNWARD 0
1085 #endif
1086
1087 /* On most machines, the CFA coincides with the first incoming parm.  */
1088 #ifndef ARG_POINTER_CFA_OFFSET
1089 #define ARG_POINTER_CFA_OFFSET(FNDECL) FIRST_PARM_OFFSET (FNDECL)
1090 #endif
1091
1092 /* On most machines, we use the CFA as DW_AT_frame_base.  */
1093 #ifndef CFA_FRAME_BASE_OFFSET
1094 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1095 #endif
1096
1097 /* The offset from the incoming value of %sp to the top of the stack frame
1098    for the current function.  */
1099 #ifndef INCOMING_FRAME_SP_OFFSET
1100 #define INCOMING_FRAME_SP_OFFSET 0
1101 #endif
1102
1103 #ifndef HARD_REGNO_NREGS_HAS_PADDING
1104 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1105 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1106 #endif
1107
1108 #ifndef OUTGOING_REG_PARM_STACK_SPACE
1109 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1110 #endif
1111
1112 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1113    the backend.  MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1114    effort stack alignment supported by the backend.  If the backend
1115    supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1116    MAX_STACK_ALIGNMENT are the same.  Otherwise, the incoming stack
1117    boundary will limit the maximum guaranteed stack alignment.  */
1118 #ifdef MAX_STACK_ALIGNMENT
1119 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1120 #else
1121 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1122 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1123 #endif
1124
1125 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1126
1127 #ifndef LOCAL_ALIGNMENT
1128 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1129 #endif
1130
1131 #ifndef STACK_SLOT_ALIGNMENT
1132 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1133   ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1134 #endif
1135
1136 #ifndef LOCAL_DECL_ALIGNMENT
1137 #define LOCAL_DECL_ALIGNMENT(DECL) \
1138   LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1139 #endif
1140
1141 #ifndef MINIMUM_ALIGNMENT
1142 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1143 #endif
1144
1145 /* Alignment value for attribute ((aligned)).  */
1146 #ifndef ATTRIBUTE_ALIGNED_VALUE
1147 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1148 #endif
1149
1150 /* Many ports have no mode-dependent addresses (except possibly autoincrement
1151    and autodecrement addresses, which are handled by target-independent code
1152    in recog.c).  */
1153 #ifndef GO_IF_MODE_DEPENDENT_ADDRESS
1154 #define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN)
1155 #endif
1156
1157 #endif  /* ! GCC_DEFAULTS_H */