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, 2010
   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 /* This defines which switch letters take arguments.  */
  36
  37 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
  38   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
  39    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
  40    || (CHAR) == 'I' || (CHAR) == 'J' || (CHAR) == 'm' \
  41    || (CHAR) == 'x' || (CHAR) == 'L' || (CHAR) == 'A' \
  42    || (CHAR) == 'B' || (CHAR) == 'd')
  43
  44 /* This defines which multi-letter switches take arguments.  */
  45
  46 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR)              \
  47  (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext")      \
  48   || !strcmp (STR, "Tbss") || !strcmp (STR, "include")  \
  49   || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
  50   || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
  51   || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
  52   || !strcmp (STR, "iquote") || !strcmp (STR, "isystem") \
  53   || !strcmp (STR, "isysroot") || !strcmp (STR, "imultilib") \
  54   || !strcmp (STR, "-param") || !strcmp (STR, "specs") \
  55   || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ") \
  56   || !strcmp (STR, "fintrinsic-modules-path") \
  57   || !strcmp (STR, "dumpbase") || !strcmp (STR, "dumpdir"))
  58
  59 #ifndef SWITCH_TAKES_ARG
  60 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG (CHAR)
  61 #endif
  62
  63 #ifndef WORD_SWITCH_TAKES_ARG
  64 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
  65 #endif
  66
  67 /* Store in OUTPUT a string (made with alloca) containing an
  68    assembler-name for a local static variable or function named NAME.
  69    LABELNO is an integer which is different for each call.  */
  70
  71 #ifndef ASM_PN_FORMAT
  72 # ifndef NO_DOT_IN_LABEL
  73 #  define ASM_PN_FORMAT "%s.%lu"
  74 # else
  75 #  ifndef NO_DOLLAR_IN_LABEL
  76 #   define ASM_PN_FORMAT "%s$%lu"
  77 #  else
  78 #   define ASM_PN_FORMAT "__%s_%lu"
  79 #  endif
  80 # endif
  81 #endif /* ! ASM_PN_FORMAT */
  82
  83 #ifndef ASM_FORMAT_PRIVATE_NAME
  84 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
  85   do { const char *const name_ = (NAME); \
  86        char *const output_ = (OUTPUT) = \
  87          (char *) alloca (strlen (name_) + 32); \
  88        sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
  89   } while (0)
  90 #endif
  91
  92 /* Choose a reasonable default for ASM_OUTPUT_ASCII.  */
  93
  94 #ifndef ASM_OUTPUT_ASCII
  95 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
  96   do {                                                                        \
  97     FILE *_hide_asm_out_file = (MYFILE);                                      \
  98     const unsigned char *_hide_p = (const unsigned char *) (MYSTRING);        \
  99     int _hide_thissize = (MYLENGTH);                                          \
 100     {                                                                         \
 101       FILE *asm_out_file = _hide_asm_out_file;                                \
 102       const unsigned char *p = _hide_p;                                       \
 103       int thissize = _hide_thissize;                                          \
 104       int i;                                                                  \
 105       fprintf (asm_out_file, "\t.ascii \"");                                  \
 106                                                                               \
 107       for (i = 0; i < thissize; i++)                                          \
 108         {                                                                     \
 109           int c = p[i];                                                       \
 110           if (c == '\"' || c == '\\')                                         \
 111             putc ('\\', asm_out_file);                                        \
 112           if (ISPRINT(c))                                                     \
 113             putc (c, asm_out_file);                                           \
 114           else                                                                \
 115             {                                                                 \
 116               fprintf (asm_out_file, "\\%o", c);                              \
 117               /* After an octal-escape, if a digit follows,                   \
 118                  terminate one string constant and start another.             \
 119                  The VAX assembler fails to stop reading the escape           \
 120                  after three digits, so this is the only way we               \
 121                  can get it to parse the data properly.  */                   \
 122               if (i < thissize - 1 && ISDIGIT(p[i + 1]))                      \
 123                 fprintf (asm_out_file, "\"\n\t.ascii \"");                    \
 124           }                                                                   \
 125         }                                                                     \
 126       fprintf (asm_out_file, "\"\n");                                         \
 127     }                                                                         \
 128   }                                                                           \
 129   while (0)
 130 #endif
 131
 132 /* This is how we tell the assembler to equate two values.  */
 133 #ifdef SET_ASM_OP
 134 #ifndef ASM_OUTPUT_DEF
 135 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \
 136  do {   fprintf ((FILE), "%s", SET_ASM_OP);                             \
 137         assemble_name (FILE, LABEL1);                                   \
 138         fprintf (FILE, ",");                                            \
 139         assemble_name (FILE, LABEL2);                                   \
 140         fprintf (FILE, "\n");                                           \
 141   } while (0)
 142 #endif
 143 #endif
 144
 145 #ifndef IFUNC_ASM_TYPE
 146 #define IFUNC_ASM_TYPE "gnu_indirect_function"
 147 #endif
 148
 149 #ifndef TLS_COMMON_ASM_OP
 150 #define TLS_COMMON_ASM_OP ".tls_common"
 151 #endif
 152
 153 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
 154 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE)                   \
 155   do                                                                    \
 156     {                                                                   \
 157       fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP);                    \
 158       assemble_name ((FILE), (NAME));                                   \
 159       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",          \
 160                (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT);              \
 161     }                                                                   \
 162   while (0)
 163 #endif
 164
 165 /* Decide whether to defer emitting the assembler output for an equate
 166    of two values.  The default is to not defer output.  */
 167 #ifndef TARGET_DEFERRED_OUTPUT_DEFS
 168 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false
 169 #endif
 170
 171 /* This is how to output the definition of a user-level label named
 172    NAME, such as the label on variable NAME.  */
 173
 174 #ifndef ASM_OUTPUT_LABEL
 175 #define ASM_OUTPUT_LABEL(FILE,NAME) \
 176   do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0)
 177 #endif
 178
 179 /* This is how to output the definition of a user-level label named
 180    NAME, such as the label on a function.  */
 181
 182 #ifndef ASM_OUTPUT_FUNCTION_LABEL
 183 #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \
 184   ASM_OUTPUT_LABEL ((FILE), (NAME))
 185 #endif
 186
 187 /* Output the definition of a compiler-generated label named NAME.  */
 188 #ifndef ASM_OUTPUT_INTERNAL_LABEL
 189 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME)    \
 190   do {                                          \
 191     assemble_name_raw ((FILE), (NAME));         \
 192     fputs (":\n", (FILE));                      \
 193   } while (0)
 194 #endif
 195
 196 /* This is how to output a reference to a user-level label named NAME.  */
 197
 198 #ifndef ASM_OUTPUT_LABELREF
 199 #define ASM_OUTPUT_LABELREF(FILE,NAME)  asm_fprintf ((FILE), "%U%s", (NAME))
 200 #endif
 201
 202 /* Allow target to print debug info labels specially.  This is useful for
 203    VLIW targets, since debug info labels should go into the middle of
 204    instruction bundles instead of breaking them.  */
 205
 206 #ifndef ASM_OUTPUT_DEBUG_LABEL
 207 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
 208   (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
 209 #endif
 210
 211 /* This is how we tell the assembler that a symbol is weak.  */
 212 #ifndef ASM_OUTPUT_WEAK_ALIAS
 213 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
 214 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE)      \
 215   do                                                    \
 216     {                                                   \
 217       ASM_WEAKEN_LABEL (STREAM, NAME);                  \
 218       if (VALUE)                                        \
 219         ASM_OUTPUT_DEF (STREAM, NAME, VALUE);           \
 220     }                                                   \
 221   while (0)
 222 #endif
 223 #endif
 224
 225 /* This is how we tell the assembler that a symbol is a weak alias to
 226    another symbol that doesn't require the other symbol to be defined.
 227    Uses of the former will turn into weak uses of the latter, i.e.,
 228    uses that, in case the latter is undefined, will not cause errors,
 229    and will add it to the symbol table as weak undefined.  However, if
 230    the latter is referenced directly, a strong reference prevails.  */
 231 #ifndef ASM_OUTPUT_WEAKREF
 232 #if defined HAVE_GAS_WEAKREF
 233 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE)                     \
 234   do                                                                    \
 235     {                                                                   \
 236       fprintf ((FILE), "\t.weakref\t");                                 \
 237       assemble_name ((FILE), (NAME));                                   \
 238       fprintf ((FILE), ",");                                            \
 239       assemble_name ((FILE), (VALUE));                                  \
 240       fprintf ((FILE), "\n");                                           \
 241     }                                                                   \
 242   while (0)
 243 #endif
 244 #endif
 245
 246 /* How to emit a .type directive.  */
 247 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE
 248 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
 249 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)   \
 250   do                                                    \
 251     {                                                   \
 252       fputs (TYPE_ASM_OP, STREAM);                      \
 253       assemble_name (STREAM, NAME);                     \
 254       fputs (", ", STREAM);                             \
 255       fprintf (STREAM, TYPE_OPERAND_FMT, TYPE);         \
 256       putc ('\n', STREAM);                              \
 257     }                                                   \
 258   while (0)
 259 #endif
 260 #endif
 261
 262 /* How to emit a .size directive.  */
 263 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE
 264 #ifdef SIZE_ASM_OP
 265 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE)   \
 266   do                                                    \
 267     {                                                   \
 268       HOST_WIDE_INT size_ = (SIZE);                     \
 269       fputs (SIZE_ASM_OP, STREAM);                      \
 270       assemble_name (STREAM, NAME);                     \
 271       fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
 272     }                                                   \
 273   while (0)
 274
 275 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME)          \
 276   do                                                    \
 277     {                                                   \
 278       fputs (SIZE_ASM_OP, STREAM);                      \
 279       assemble_name (STREAM, NAME);                     \
 280       fputs (", .-", STREAM);                           \
 281       assemble_name (STREAM, NAME);                     \
 282       putc ('\n', STREAM);                              \
 283     }                                                   \
 284   while (0)
 285
 286 #endif
 287 #endif
 288
 289 /* This determines whether or not we support weak symbols.  SUPPORTS_WEAK
 290    must be a preprocessor constant.  */
 291 #ifndef SUPPORTS_WEAK
 292 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
 293 #define SUPPORTS_WEAK 1
 294 #else
 295 #define SUPPORTS_WEAK 0
 296 #endif
 297 #endif
 298
 299 /* This determines whether or not we support weak symbols during target
 300    code generation.  TARGET_SUPPORTS_WEAK can be any valid C expression.  */
 301 #ifndef TARGET_SUPPORTS_WEAK
 302 #define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK)
 303 #endif
 304
 305 /* This determines whether or not we support the discriminator
 306    attribute in the .loc directive.  */
 307 #ifndef SUPPORTS_DISCRIMINATOR
 308 #ifdef HAVE_GAS_DISCRIMINATOR
 309 #define SUPPORTS_DISCRIMINATOR 1
 310 #else
 311 #define SUPPORTS_DISCRIMINATOR 0
 312 #endif
 313 #endif
 314
 315 /* This determines whether or not we support link-once semantics.  */
 316 #ifndef SUPPORTS_ONE_ONLY
 317 #ifdef MAKE_DECL_ONE_ONLY
 318 #define SUPPORTS_ONE_ONLY 1
 319 #else
 320 #define SUPPORTS_ONE_ONLY 0
 321 #endif
 322 #endif
 323
 324 /* This determines whether weak symbols must be left out of a static
 325    archive's table of contents.  Defining this macro to be nonzero has
 326    the consequence that certain symbols will not be made weak that
 327    otherwise would be.  The C++ ABI requires this macro to be zero;
 328    see the documentation.  */
 329 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 330 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
 331 #endif
 332
 333 /* This determines whether or not we need linkonce unwind information.  */
 334 #ifndef TARGET_USES_WEAK_UNWIND_INFO
 335 #define TARGET_USES_WEAK_UNWIND_INFO 0
 336 #endif
 337
 338 /* By default, there is no prefix on user-defined symbols.  */
 339 #ifndef USER_LABEL_PREFIX
 340 #define USER_LABEL_PREFIX ""
 341 #endif
 342
 343 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
 344    provide a weak attribute.  Else define it to nothing.
 345
 346    This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
 347    not available at that time.
 348
 349    Note, this is only for use by target files which we know are to be
 350    compiled by GCC.  */
 351 #ifndef TARGET_ATTRIBUTE_WEAK
 352 # if SUPPORTS_WEAK
 353 #  define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
 354 # else
 355 #  define TARGET_ATTRIBUTE_WEAK
 356 # endif
 357 #endif
 358
 359 /* Determines whether we may use common symbols to represent one-only
 360    semantics (a.k.a. "vague linkage").  */
 361 #ifndef USE_COMMON_FOR_ONE_ONLY
 362 # define USE_COMMON_FOR_ONE_ONLY 1
 363 #endif
 364
 365 /* By default we can assume that all global symbols are in one namespace,
 366    across all shared libraries.  */
 367 #ifndef MULTIPLE_SYMBOL_SPACES
 368 # define MULTIPLE_SYMBOL_SPACES 0
 369 #endif
 370
 371 /* If the target supports init_priority C++ attribute, give
 372    SUPPORTS_INIT_PRIORITY a nonzero value.  */
 373 #ifndef SUPPORTS_INIT_PRIORITY
 374 #define SUPPORTS_INIT_PRIORITY 1
 375 #endif /* SUPPORTS_INIT_PRIORITY */
 376
 377 /* If duplicate library search directories can be removed from a
 378    linker command without changing the linker's semantics, give this
 379    symbol a nonzero.  */
 380 #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
 381 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
 382 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
 383
 384 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
 385    the rest of the DWARF 2 frame unwind support is also provided.  */
 386 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
 387 #define DWARF2_UNWIND_INFO 1
 388 #endif
 389
 390 /* If we have named sections, and we're using crtstuff to run ctors,
 391    use them for registering eh frame information.  */
 392 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
 393     && !defined(EH_FRAME_IN_DATA_SECTION)
 394 #ifndef EH_FRAME_SECTION_NAME
 395 #define EH_FRAME_SECTION_NAME ".eh_frame"
 396 #endif
 397 #endif
 398
 399 /* On many systems, different EH table encodings are used under
 400    difference circumstances.  Some will require runtime relocations;
 401    some will not.  For those that do not require runtime relocations,
 402    we would like to make the table read-only.  However, since the
 403    read-only tables may need to be combined with read-write tables
 404    that do require runtime relocation, it is not safe to make the
 405    tables read-only unless the linker will merge read-only and
 406    read-write sections into a single read-write section.  If your
 407    linker does not have this ability, but your system is such that no
 408    encoding used with non-PIC code will ever require a runtime
 409    relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
 410    your target configuration file.  */
 411 #ifndef EH_TABLES_CAN_BE_READ_ONLY
 412 #ifdef HAVE_LD_RO_RW_SECTION_MIXING
 413 #define EH_TABLES_CAN_BE_READ_ONLY 1
 414 #else
 415 #define EH_TABLES_CAN_BE_READ_ONLY 0
 416 #endif
 417 #endif
 418
 419 /* If we have named section and we support weak symbols, then use the
 420    .jcr section for recording java classes which need to be registered
 421    at program start-up time.  */
 422 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
 423 #ifndef JCR_SECTION_NAME
 424 #define JCR_SECTION_NAME ".jcr"
 425 #endif
 426 #endif
 427
 428 /* This decision to use a .jcr section can be overridden by defining
 429    USE_JCR_SECTION to 0 in target file.  This is necessary if target
 430    can define JCR_SECTION_NAME but does not have crtstuff or
 431    linker support for .jcr section.  */
 432 #ifndef TARGET_USE_JCR_SECTION
 433 #ifdef JCR_SECTION_NAME
 434 #define TARGET_USE_JCR_SECTION 1
 435 #else
 436 #define TARGET_USE_JCR_SECTION 0
 437 #endif
 438 #endif
 439
 440 /* Number of hardware registers that go into the DWARF-2 unwind info.
 441    If not defined, equals FIRST_PSEUDO_REGISTER  */
 442
 443 #ifndef DWARF_FRAME_REGISTERS
 444 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
 445 #endif
 446
 447 /* How to renumber registers for dbx and gdb.  If not defined, assume
 448    no renumbering is necessary.  */
 449
 450 #ifndef DBX_REGISTER_NUMBER
 451 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
 452 #endif
 453
 454 /* Default sizes for base C types.  If the sizes are different for
 455    your target, you should override these values by defining the
 456    appropriate symbols in your tm.h file.  */
 457
 458 #ifndef BITS_PER_UNIT
 459 #define BITS_PER_UNIT 8
 460 #endif
 461
 462 #ifndef BITS_PER_WORD
 463 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
 464 #endif
 465
 466 #ifndef CHAR_TYPE_SIZE
 467 #define CHAR_TYPE_SIZE BITS_PER_UNIT
 468 #endif
 469
 470 #ifndef BOOL_TYPE_SIZE
 471 /* `bool' has size and alignment `1', on almost all platforms.  */
 472 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
 473 #endif
 474
 475 #ifndef SHORT_TYPE_SIZE
 476 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
 477 #endif
 478
 479 #ifndef INT_TYPE_SIZE
 480 #define INT_TYPE_SIZE BITS_PER_WORD
 481 #endif
 482
 483 #ifndef LONG_TYPE_SIZE
 484 #define LONG_TYPE_SIZE BITS_PER_WORD
 485 #endif
 486
 487 #ifndef LONG_LONG_TYPE_SIZE
 488 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
 489 #endif
 490
 491 #ifndef WCHAR_TYPE_SIZE
 492 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
 493 #endif
 494
 495 #ifndef FLOAT_TYPE_SIZE
 496 #define FLOAT_TYPE_SIZE BITS_PER_WORD
 497 #endif
 498
 499 #ifndef DOUBLE_TYPE_SIZE
 500 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
 501 #endif
 502
 503 #ifndef LONG_DOUBLE_TYPE_SIZE
 504 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
 505 #endif
 506
 507 #ifndef DECIMAL32_TYPE_SIZE
 508 #define DECIMAL32_TYPE_SIZE 32
 509 #endif
 510
 511 #ifndef DECIMAL64_TYPE_SIZE
 512 #define DECIMAL64_TYPE_SIZE 64
 513 #endif
 514
 515 #ifndef DECIMAL128_TYPE_SIZE
 516 #define DECIMAL128_TYPE_SIZE 128
 517 #endif
 518
 519 #ifndef SHORT_FRACT_TYPE_SIZE
 520 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
 521 #endif
 522
 523 #ifndef FRACT_TYPE_SIZE
 524 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
 525 #endif
 526
 527 #ifndef LONG_FRACT_TYPE_SIZE
 528 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
 529 #endif
 530
 531 #ifndef LONG_LONG_FRACT_TYPE_SIZE
 532 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
 533 #endif
 534
 535 #ifndef SHORT_ACCUM_TYPE_SIZE
 536 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
 537 #endif
 538
 539 #ifndef ACCUM_TYPE_SIZE
 540 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
 541 #endif
 542
 543 #ifndef LONG_ACCUM_TYPE_SIZE
 544 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
 545 #endif
 546
 547 #ifndef LONG_LONG_ACCUM_TYPE_SIZE
 548 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
 549 #endif
 550
 551 /* We let tm.h override the types used here, to handle trivial differences
 552    such as the choice of unsigned int or long unsigned int for size_t.
 553    When machines start needing nontrivial differences in the size type,
 554    it would be best to do something here to figure out automatically
 555    from other information what type to use.  */
 556
 557 #ifndef SIZE_TYPE
 558 #define SIZE_TYPE "long unsigned int"
 559 #endif
 560
 561 #ifndef PID_TYPE
 562 #define PID_TYPE "int"
 563 #endif
 564
 565 /* If GCC knows the exact uint_least16_t and uint_least32_t types from
 566    <stdint.h>, use them for char16_t and char32_t.  Otherwise, use
 567    these guesses; getting the wrong type of a given width will not
 568    affect C++ name mangling because in C++ these are distinct types
 569    not typedefs.  */
 570
 571 #ifdef UINT_LEAST16_TYPE
 572 #define CHAR16_TYPE UINT_LEAST16_TYPE
 573 #else
 574 #define CHAR16_TYPE "short unsigned int"
 575 #endif
 576
 577 #ifdef UINT_LEAST32_TYPE
 578 #define CHAR32_TYPE UINT_LEAST32_TYPE
 579 #else
 580 #define CHAR32_TYPE "unsigned int"
 581 #endif
 582
 583 #ifndef WCHAR_TYPE
 584 #define WCHAR_TYPE "int"
 585 #endif
 586
 587 /* WCHAR_TYPE gets overridden by -fshort-wchar.  */
 588 #define MODIFIED_WCHAR_TYPE \
 589         (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
 590
 591 #ifndef PTRDIFF_TYPE
 592 #define PTRDIFF_TYPE "long int"
 593 #endif
 594
 595 #ifndef WINT_TYPE
 596 #define WINT_TYPE "unsigned int"
 597 #endif
 598
 599 #ifndef INTMAX_TYPE
 600 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE)     \
 601                      ? "int"                                    \
 602                      : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
 603                         ? "long int"                            \
 604                         : "long long int"))
 605 #endif
 606
 607 #ifndef UINTMAX_TYPE
 608 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE)    \
 609                      ? "unsigned int"                           \
 610                      : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
 611                         ? "long unsigned int"                   \
 612                         : "long long unsigned int"))
 613 #endif
 614
 615
 616 /* There are no default definitions of these <stdint.h> types.  */
 617
 618 #ifndef SIG_ATOMIC_TYPE
 619 #define SIG_ATOMIC_TYPE ((const char *) NULL)
 620 #endif
 621
 622 #ifndef INT8_TYPE
 623 #define INT8_TYPE ((const char *) NULL)
 624 #endif
 625
 626 #ifndef INT16_TYPE
 627 #define INT16_TYPE ((const char *) NULL)
 628 #endif
 629
 630 #ifndef INT32_TYPE
 631 #define INT32_TYPE ((const char *) NULL)
 632 #endif
 633
 634 #ifndef INT64_TYPE
 635 #define INT64_TYPE ((const char *) NULL)
 636 #endif
 637
 638 #ifndef UINT8_TYPE
 639 #define UINT8_TYPE ((const char *) NULL)
 640 #endif
 641
 642 #ifndef UINT16_TYPE
 643 #define UINT16_TYPE ((const char *) NULL)
 644 #endif
 645
 646 #ifndef UINT32_TYPE
 647 #define UINT32_TYPE ((const char *) NULL)
 648 #endif
 649
 650 #ifndef UINT64_TYPE
 651 #define UINT64_TYPE ((const char *) NULL)
 652 #endif
 653
 654 #ifndef INT_LEAST8_TYPE
 655 #define INT_LEAST8_TYPE ((const char *) NULL)
 656 #endif
 657
 658 #ifndef INT_LEAST16_TYPE
 659 #define INT_LEAST16_TYPE ((const char *) NULL)
 660 #endif
 661
 662 #ifndef INT_LEAST32_TYPE
 663 #define INT_LEAST32_TYPE ((const char *) NULL)
 664 #endif
 665
 666 #ifndef INT_LEAST64_TYPE
 667 #define INT_LEAST64_TYPE ((const char *) NULL)
 668 #endif
 669
 670 #ifndef UINT_LEAST8_TYPE
 671 #define UINT_LEAST8_TYPE ((const char *) NULL)
 672 #endif
 673
 674 #ifndef UINT_LEAST16_TYPE
 675 #define UINT_LEAST16_TYPE ((const char *) NULL)
 676 #endif
 677
 678 #ifndef UINT_LEAST32_TYPE
 679 #define UINT_LEAST32_TYPE ((const char *) NULL)
 680 #endif
 681
 682 #ifndef UINT_LEAST64_TYPE
 683 #define UINT_LEAST64_TYPE ((const char *) NULL)
 684 #endif
 685
 686 #ifndef INT_FAST8_TYPE
 687 #define INT_FAST8_TYPE ((const char *) NULL)
 688 #endif
 689
 690 #ifndef INT_FAST16_TYPE
 691 #define INT_FAST16_TYPE ((const char *) NULL)
 692 #endif
 693
 694 #ifndef INT_FAST32_TYPE
 695 #define INT_FAST32_TYPE ((const char *) NULL)
 696 #endif
 697
 698 #ifndef INT_FAST64_TYPE
 699 #define INT_FAST64_TYPE ((const char *) NULL)
 700 #endif
 701
 702 #ifndef UINT_FAST8_TYPE
 703 #define UINT_FAST8_TYPE ((const char *) NULL)
 704 #endif
 705
 706 #ifndef UINT_FAST16_TYPE
 707 #define UINT_FAST16_TYPE ((const char *) NULL)
 708 #endif
 709
 710 #ifndef UINT_FAST32_TYPE
 711 #define UINT_FAST32_TYPE ((const char *) NULL)
 712 #endif
 713
 714 #ifndef UINT_FAST64_TYPE
 715 #define UINT_FAST64_TYPE ((const char *) NULL)
 716 #endif
 717
 718 #ifndef INTPTR_TYPE
 719 #define INTPTR_TYPE ((const char *) NULL)
 720 #endif
 721
 722 #ifndef UINTPTR_TYPE
 723 #define UINTPTR_TYPE ((const char *) NULL)
 724 #endif
 725
 726 /* Width in bits of a pointer.  Mind the value of the macro `Pmode'.  */
 727 #ifndef POINTER_SIZE
 728 #define POINTER_SIZE BITS_PER_WORD
 729 #endif
 730
 731 #ifndef PIC_OFFSET_TABLE_REGNUM
 732 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
 733 #endif
 734
 735 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
 736 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
 737 #endif
 738
 739 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
 740 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
 741 #endif
 742
 743 #ifndef TARGET_DECLSPEC
 744 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
 745 /* If the target supports the "dllimport" attribute, users are
 746    probably used to the "__declspec" syntax.  */
 747 #define TARGET_DECLSPEC 1
 748 #else
 749 #define TARGET_DECLSPEC 0
 750 #endif
 751 #endif
 752
 753 /* By default, the preprocessor should be invoked the same way in C++
 754    as in C.  */
 755 #ifndef CPLUSPLUS_CPP_SPEC
 756 #ifdef CPP_SPEC
 757 #define CPLUSPLUS_CPP_SPEC CPP_SPEC
 758 #endif
 759 #endif
 760
 761 #ifndef ACCUMULATE_OUTGOING_ARGS
 762 #define ACCUMULATE_OUTGOING_ARGS 0
 763 #endif
 764
 765 /* Supply a default definition for PUSH_ARGS.  */
 766 #ifndef PUSH_ARGS
 767 #ifdef PUSH_ROUNDING
 768 #define PUSH_ARGS       !ACCUMULATE_OUTGOING_ARGS
 769 #else
 770 #define PUSH_ARGS       0
 771 #endif
 772 #endif
 773
 774 /* Decide whether a function's arguments should be processed
 775    from first to last or from last to first.
 776
 777    They should if the stack and args grow in opposite directions, but
 778    only if we have push insns.  */
 779
 780 #ifdef PUSH_ROUNDING
 781
 782 #ifndef PUSH_ARGS_REVERSED
 783 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
 784 #define PUSH_ARGS_REVERSED  PUSH_ARGS
 785 #endif
 786 #endif
 787
 788 #endif
 789
 790 #ifndef PUSH_ARGS_REVERSED
 791 #define PUSH_ARGS_REVERSED 0
 792 #endif
 793
 794 /* Default value for the alignment (in bits) a C conformant malloc has to
 795    provide. This default is intended to be safe and always correct.  */
 796 #ifndef MALLOC_ABI_ALIGNMENT
 797 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
 798 #endif
 799
 800 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
 801    STACK_BOUNDARY is required.  */
 802 #ifndef PREFERRED_STACK_BOUNDARY
 803 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
 804 #endif
 805
 806 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
 807    defined.  */
 808 #ifndef INCOMING_STACK_BOUNDARY
 809 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
 810 #endif
 811
 812 #ifndef TARGET_DEFAULT_PACK_STRUCT
 813 #define TARGET_DEFAULT_PACK_STRUCT 0
 814 #endif
 815
 816 /* By default, the C++ compiler will use function addresses in the
 817    vtable entries.  Setting this nonzero tells the compiler to use
 818    function descriptors instead.  The value of this macro says how
 819    many words wide the descriptor is (normally 2).  It is assumed
 820    that the address of a function descriptor may be treated as a
 821    pointer to a function.  */
 822 #ifndef TARGET_VTABLE_USES_DESCRIPTORS
 823 #define TARGET_VTABLE_USES_DESCRIPTORS 0
 824 #endif
 825
 826 /* By default, the vtable entries are void pointers, the so the alignment
 827    is the same as pointer alignment.  The value of this macro specifies
 828    the alignment of the vtable entry in bits.  It should be defined only
 829    when special alignment is necessary.  */
 830 #ifndef TARGET_VTABLE_ENTRY_ALIGN
 831 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
 832 #endif
 833
 834 /* There are a few non-descriptor entries in the vtable at offsets below
 835    zero.  If these entries must be padded (say, to preserve the alignment
 836    specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
 837    words in each data entry.  */
 838 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
 839 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
 840 #endif
 841
 842 /* Decide whether it is safe to use a local alias for a virtual function
 843    when constructing thunks.  */
 844 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
 845 #ifdef ASM_OUTPUT_DEF
 846 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
 847 #else
 848 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
 849 #endif
 850 #endif
 851
 852 /* Select a format to encode pointers in exception handling data.  We
 853    prefer those that result in fewer dynamic relocations.  Assume no
 854    special support here and encode direct references.  */
 855 #ifndef ASM_PREFERRED_EH_DATA_FORMAT
 856 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  DW_EH_PE_absptr
 857 #endif
 858
 859 /* By default, the C++ compiler will use the lowest bit of the pointer
 860    to function to indicate a pointer-to-member-function points to a
 861    virtual member function.  However, if FUNCTION_BOUNDARY indicates
 862    function addresses aren't always even, the lowest bit of the delta
 863    field will be used.  */
 864 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
 865 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
 866   (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
 867    ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
 868 #endif
 869
 870 #ifndef DEFAULT_GDB_EXTENSIONS
 871 #define DEFAULT_GDB_EXTENSIONS 1
 872 #endif
 873
 874 /* If more than one debugging type is supported, you must define
 875    PREFERRED_DEBUGGING_TYPE to choose the default.  */
 876
 877 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
 878          + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
 879          + defined (VMS_DEBUGGING_INFO))
 880 #ifndef PREFERRED_DEBUGGING_TYPE
 881 #error You must define PREFERRED_DEBUGGING_TYPE
 882 #endif /* no PREFERRED_DEBUGGING_TYPE */
 883
 884 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
 885    here so other code needn't care.  */
 886 #elif defined DBX_DEBUGGING_INFO
 887 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 888
 889 #elif defined SDB_DEBUGGING_INFO
 890 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
 891
 892 #elif defined DWARF2_DEBUGGING_INFO
 893 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 894
 895 #elif defined VMS_DEBUGGING_INFO
 896 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
 897
 898 #elif defined XCOFF_DEBUGGING_INFO
 899 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
 900
 901 #else
 902 /* No debugging format is supported by this target.  */
 903 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
 904 #endif
 905
 906 #ifndef LARGEST_EXPONENT_IS_NORMAL
 907 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
 908 #endif
 909
 910 #ifndef ROUND_TOWARDS_ZERO
 911 #define ROUND_TOWARDS_ZERO 0
 912 #endif
 913
 914 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
 915 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
 916 #endif
 917
 918 /* True if the targets integer-comparison functions return { 0, 1, 2
 919    } to indicate { <, ==, > }.  False if { -1, 0, 1 } is used
 920    instead.  The libgcc routines are biased.  */
 921 #ifndef TARGET_LIB_INT_CMP_BIASED
 922 #define TARGET_LIB_INT_CMP_BIASED (true)
 923 #endif
 924
 925 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
 926    then the word-endianness is the same as for integers.  */
 927 #ifndef FLOAT_WORDS_BIG_ENDIAN
 928 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 929 #endif
 930
 931 #ifdef TARGET_FLT_EVAL_METHOD
 932 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
 933 #else
 934 #define TARGET_FLT_EVAL_METHOD 0
 935 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
 936 #endif
 937
 938 #ifndef TARGET_DEC_EVAL_METHOD
 939 #define TARGET_DEC_EVAL_METHOD 2
 940 #endif
 941
 942 #ifndef HOT_TEXT_SECTION_NAME
 943 #define HOT_TEXT_SECTION_NAME ".text.hot"
 944 #endif
 945
 946 #ifndef UNLIKELY_EXECUTED_TEXT_SECTION_NAME
 947 #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME ".text.unlikely"
 948 #endif
 949
 950 #ifndef HAS_LONG_COND_BRANCH
 951 #define HAS_LONG_COND_BRANCH 0
 952 #endif
 953
 954 #ifndef HAS_LONG_UNCOND_BRANCH
 955 #define HAS_LONG_UNCOND_BRANCH 0
 956 #endif
 957
 958 /* Determine whether __cxa_atexit, rather than atexit, is used to
 959    register C++ destructors for local statics and global objects.  */
 960 #ifndef DEFAULT_USE_CXA_ATEXIT
 961 #define DEFAULT_USE_CXA_ATEXIT 0
 962 #endif
 963
 964 /* If none of these macros are defined, the port must use the new
 965    technique of defining constraints in the machine description.
 966    tm_p.h will define those macros that machine-independent code
 967    still uses.  */
 968 #if  !defined CONSTRAINT_LEN                    \
 969   && !defined REG_CLASS_FROM_LETTER             \
 970   && !defined REG_CLASS_FROM_CONSTRAINT         \
 971   && !defined CONST_OK_FOR_LETTER_P             \
 972   && !defined CONST_OK_FOR_CONSTRAINT_P         \
 973   && !defined CONST_DOUBLE_OK_FOR_LETTER_P      \
 974   && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P  \
 975   && !defined EXTRA_CONSTRAINT                  \
 976   && !defined EXTRA_CONSTRAINT_STR              \
 977   && !defined EXTRA_MEMORY_CONSTRAINT           \
 978   && !defined EXTRA_ADDRESS_CONSTRAINT
 979
 980 #define USE_MD_CONSTRAINTS
 981
 982 #if GCC_VERSION >= 3000 && defined IN_GCC
 983 /* These old constraint macros shouldn't appear anywhere in a
 984    configuration using MD constraint definitions.  */
 985 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
 986                    CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
 987 #endif
 988
 989 #else /* old constraint mechanism in use */
 990
 991 /* Determine whether extra constraint letter should be handled
 992    via address reload (like 'o').  */
 993 #ifndef EXTRA_MEMORY_CONSTRAINT
 994 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
 995 #endif
 996
 997 /* Determine whether extra constraint letter should be handled
 998    as an address (like 'p').  */
 999 #ifndef EXTRA_ADDRESS_CONSTRAINT
1000 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
1001 #endif
1002
1003 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
1004    for all the characters that it does not want to change, so things like the
1005   'length' of a digit in a matching constraint is an implementation detail,
1006    and not part of the interface.  */
1007 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1
1008
1009 #ifndef CONSTRAINT_LEN
1010 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
1011 #endif
1012
1013 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
1014 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
1015 #endif
1016
1017 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
1018 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
1019   CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
1020 #endif
1021
1022 #ifndef REG_CLASS_FROM_CONSTRAINT
1023 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
1024 #endif
1025
1026 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
1027 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
1028 #endif
1029
1030 #endif /* old constraint mechanism in use */
1031
1032 /* Determine whether the entire c99 runtime
1033    is present in the runtime library.  */
1034 #ifndef TARGET_C99_FUNCTIONS
1035 #define TARGET_C99_FUNCTIONS 0
1036 #endif
1037
1038 /* Determine whether the target runtime library has
1039    a sincos implementation following the GNU extension.  */
1040 #ifndef TARGET_HAS_SINCOS
1041 #define TARGET_HAS_SINCOS 0
1042 #endif
1043
1044 /* Indicate that CLZ and CTZ are undefined at zero.  */
1045 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
1046 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0
1047 #endif
1048 #ifndef CTZ_DEFINED_VALUE_AT_ZERO
1049 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0
1050 #endif
1051
1052 /* Provide a default value for STORE_FLAG_VALUE.  */
1053 #ifndef STORE_FLAG_VALUE
1054 #define STORE_FLAG_VALUE  1
1055 #endif
1056
1057 /* This macro is used to determine what the largest unit size that
1058    move_by_pieces can use is.  */
1059
1060 /* MOVE_MAX_PIECES is the number of bytes at a time which we can
1061    move efficiently, as opposed to  MOVE_MAX which is the maximum
1062    number of bytes we can move with a single instruction.  */
1063
1064 #ifndef MOVE_MAX_PIECES
1065 #define MOVE_MAX_PIECES   MOVE_MAX
1066 #endif
1067
1068 #ifndef MAX_MOVE_MAX
1069 #define MAX_MOVE_MAX MOVE_MAX
1070 #endif
1071
1072 #ifndef MIN_UNITS_PER_WORD
1073 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
1074 #endif
1075
1076 #ifndef MAX_BITS_PER_WORD
1077 #define MAX_BITS_PER_WORD BITS_PER_WORD
1078 #endif
1079
1080 #ifndef STACK_POINTER_OFFSET
1081 #define STACK_POINTER_OFFSET    0
1082 #endif
1083
1084 #ifndef LOCAL_REGNO
1085 #define LOCAL_REGNO(REGNO)  0
1086 #endif
1087
1088 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1089    the stack pointer does not matter.  The value is tested only in
1090    functions that have frame pointers.  */
1091 #ifndef EXIT_IGNORE_STACK
1092 #define EXIT_IGNORE_STACK 0
1093 #endif
1094
1095 /* Assume that case vectors are not pc-relative.  */
1096 #ifndef CASE_VECTOR_PC_RELATIVE
1097 #define CASE_VECTOR_PC_RELATIVE 0
1098 #endif
1099
1100 /* Assume that trampolines need function alignment.  */
1101 #ifndef TRAMPOLINE_ALIGNMENT
1102 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1103 #endif
1104
1105 /* Register mappings for target machines without register windows.  */
1106 #ifndef INCOMING_REGNO
1107 #define INCOMING_REGNO(N) (N)
1108 #endif
1109
1110 #ifndef OUTGOING_REGNO
1111 #define OUTGOING_REGNO(N) (N)
1112 #endif
1113
1114 #ifndef SHIFT_COUNT_TRUNCATED
1115 #define SHIFT_COUNT_TRUNCATED 0
1116 #endif
1117
1118 #ifndef LEGITIMATE_PIC_OPERAND_P
1119 #define LEGITIMATE_PIC_OPERAND_P(X) 1
1120 #endif
1121
1122 #ifndef TARGET_MEM_CONSTRAINT
1123 #define TARGET_MEM_CONSTRAINT 'm'
1124 #endif
1125
1126 #ifndef REVERSIBLE_CC_MODE
1127 #define REVERSIBLE_CC_MODE(MODE) 0
1128 #endif
1129
1130 /* Biggest alignment supported by the object file format of this machine.  */
1131 #ifndef MAX_OFILE_ALIGNMENT
1132 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1133 #endif
1134
1135 #ifndef FRAME_GROWS_DOWNWARD
1136 #define FRAME_GROWS_DOWNWARD 0
1137 #endif
1138
1139 /* On most machines, the CFA coincides with the first incoming parm.  */
1140 #ifndef ARG_POINTER_CFA_OFFSET
1141 #define ARG_POINTER_CFA_OFFSET(FNDECL) \
1142   (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
1143 #endif
1144
1145 /* On most machines, we use the CFA as DW_AT_frame_base.  */
1146 #ifndef CFA_FRAME_BASE_OFFSET
1147 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1148 #endif
1149
1150 /* The offset from the incoming value of %sp to the top of the stack frame
1151    for the current function.  */
1152 #ifndef INCOMING_FRAME_SP_OFFSET
1153 #define INCOMING_FRAME_SP_OFFSET 0
1154 #endif
1155
1156 #ifndef HARD_REGNO_NREGS_HAS_PADDING
1157 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1158 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1159 #endif
1160
1161 #ifndef OUTGOING_REG_PARM_STACK_SPACE
1162 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1163 #endif
1164
1165 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1166    the backend.  MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1167    effort stack alignment supported by the backend.  If the backend
1168    supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1169    MAX_STACK_ALIGNMENT are the same.  Otherwise, the incoming stack
1170    boundary will limit the maximum guaranteed stack alignment.  */
1171 #ifdef MAX_STACK_ALIGNMENT
1172 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1173 #else
1174 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1175 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1176 #endif
1177
1178 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1179
1180 #ifndef LOCAL_ALIGNMENT
1181 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1182 #endif
1183
1184 #ifndef STACK_SLOT_ALIGNMENT
1185 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1186   ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1187 #endif
1188
1189 #ifndef LOCAL_DECL_ALIGNMENT
1190 #define LOCAL_DECL_ALIGNMENT(DECL) \
1191   LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1192 #endif
1193
1194 #ifndef MINIMUM_ALIGNMENT
1195 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1196 #endif
1197
1198 /* Alignment value for attribute ((aligned)).  */
1199 #ifndef ATTRIBUTE_ALIGNED_VALUE
1200 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1201 #endif
1202
1203 /* Many ports have no mode-dependent addresses (except possibly autoincrement
1204    and autodecrement addresses, which are handled by target-independent code
1205    in recog.c).  */
1206 #ifndef GO_IF_MODE_DEPENDENT_ADDRESS
1207 #define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN)
1208 #endif
1209
1210 /* For most ports anything that evaluates to a constant symbolic
1211    or integer value is acceptable as a constant address.  */
1212 #ifndef CONSTANT_ADDRESS_P
1213 #define CONSTANT_ADDRESS_P(X)   (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1214 #endif
1215
1216 #ifndef MAX_FIXED_MODE_SIZE
1217 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1218 #endif
1219
1220 /* Nonzero if structures and unions should be returned in memory.
1221
1222    This should only be defined if compatibility with another compiler or
1223    with an ABI is needed, because it results in slower code.  */
1224
1225 #ifndef DEFAULT_PCC_STRUCT_RETURN
1226 #define DEFAULT_PCC_STRUCT_RETURN 1
1227 #endif
1228
1229 #ifdef GCC_INSN_FLAGS_H
1230 /* Dependent default target macro definitions
1231
1232    This section of defaults.h defines target macros that depend on generated
1233    headers.  This is a bit awkward:  We want to put all default definitions
1234    for target macros in defaults.h, but some of the defaults depend on the
1235    HAVE_* flags defines of insn-flags.h.  But insn-flags.h is not always
1236    included by files that do include defaults.h.
1237
1238    Fortunately, the default macro definitions that depend on the HAVE_*
1239    macros are also the ones that will only be used inside GCC itself, i.e.
1240    not in the gen* programs or in target objects like libgcc.
1241
1242    Obviously, it would be best to keep this section of defaults.h as small
1243    as possible, by converting the macros defined below to target hooks or
1244    functions.
1245 */
1246
1247 /* The default branch cost is 1.  */
1248 #ifndef BRANCH_COST
1249 #define BRANCH_COST(speed_p, predictable_p) 1
1250 #endif
1251
1252 /* If a memory-to-memory move would take MOVE_RATIO or more simple
1253    move-instruction sequences, we will do a movmem or libcall instead.  */
1254
1255 #ifndef MOVE_RATIO
1256 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1257 #define MOVE_RATIO(speed) 2
1258 #else
1259 /* If we are optimizing for space (-Os), cut down the default move ratio.  */
1260 #define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1261 #endif
1262 #endif
1263
1264 /* If a clear memory operation would take CLEAR_RATIO or more simple
1265    move-instruction sequences, we will do a setmem or libcall instead.  */
1266
1267 #ifndef CLEAR_RATIO
1268 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1269 #define CLEAR_RATIO(speed) 2
1270 #else
1271 /* If we are optimizing for space, cut down the default clear ratio.  */
1272 #define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1273 #endif
1274 #endif
1275
1276 /* If a memory set (to value other than zero) operation would take
1277    SET_RATIO or more simple move-instruction sequences, we will do a movmem
1278    or libcall instead.  */
1279 #ifndef SET_RATIO
1280 #define SET_RATIO(speed) MOVE_RATIO(speed)
1281 #endif
1282
1283 /* Supply a default definition for FUNCTION_ARG_PADDING:
1284    usually pad upward, but pad short args downward on
1285    big-endian machines.  */
1286
1287 #define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE)                        \
1288   (! BYTES_BIG_ENDIAN                                                   \
1289    ? upward                                                             \
1290    : (((MODE) == BLKmode                                                \
1291        ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST         \
1292           && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
1293        : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY)                       \
1294       ? downward : upward))
1295
1296 #ifndef FUNCTION_ARG_PADDING
1297 #define FUNCTION_ARG_PADDING(MODE, TYPE)        \
1298   DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
1299 #endif
1300
1301 /* Supply a default definition for FUNCTION_ARG_BOUNDARY.  Normally, we let
1302    FUNCTION_ARG_PADDING, which also pads the length, handle any needed
1303    alignment.  */
1304
1305 #ifndef FUNCTION_ARG_BOUNDARY
1306 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE)       PARM_BOUNDARY
1307 #endif
1308
1309 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1310    Normally move_insn, so Pmode stack pointer.  */
1311
1312 #ifndef STACK_SAVEAREA_MODE
1313 #define STACK_SAVEAREA_MODE(LEVEL) Pmode
1314 #endif
1315
1316 /* Supply a default definition of STACK_SIZE_MODE for
1317    allocate_dynamic_stack_space.  Normally PLUS/MINUS, so word_mode.  */
1318
1319 #ifndef STACK_SIZE_MODE
1320 #define STACK_SIZE_MODE word_mode
1321 #endif
1322
1323 /* Provide default values for the macros controlling stack checking.  */
1324
1325 /* The default is neither full builtin stack checking...  */
1326 #ifndef STACK_CHECK_BUILTIN
1327 #define STACK_CHECK_BUILTIN 0
1328 #endif
1329
1330 /* ...nor static builtin stack checking.  */
1331 #ifndef STACK_CHECK_STATIC_BUILTIN
1332 #define STACK_CHECK_STATIC_BUILTIN 0
1333 #endif
1334
1335 /* The default interval is one page (4096 bytes).  */
1336 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1337 #define STACK_CHECK_PROBE_INTERVAL_EXP 12
1338 #endif
1339
1340 /* The default is not to move the stack pointer.  */
1341 #ifndef STACK_CHECK_MOVING_SP
1342 #define STACK_CHECK_MOVING_SP 0
1343 #endif
1344
1345 /* This is a kludge to try to capture the discrepancy between the old
1346    mechanism (generic stack checking) and the new mechanism (static
1347    builtin stack checking).  STACK_CHECK_PROTECT needs to be bumped
1348    for the latter because part of the protection area is effectively
1349    included in STACK_CHECK_MAX_FRAME_SIZE for the former.  */
1350 #ifdef STACK_CHECK_PROTECT
1351 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1352 #else
1353 #define STACK_OLD_CHECK_PROTECT \
1354  (targetm.except_unwind_info () == UI_SJLJ ? 75 * UNITS_PER_WORD : 8 * 1024)
1355 #endif
1356
1357 /* Minimum amount of stack required to recover from an anticipated stack
1358    overflow detection.  The default value conveys an estimate of the amount
1359    of stack required to propagate an exception.  */
1360 #ifndef STACK_CHECK_PROTECT
1361 #define STACK_CHECK_PROTECT \
1362  (targetm.except_unwind_info () == UI_SJLJ ? 75 * UNITS_PER_WORD : 12 * 1024)
1363 #endif
1364
1365 /* Make the maximum frame size be the largest we can and still only need
1366    one probe per function.  */
1367 #ifndef STACK_CHECK_MAX_FRAME_SIZE
1368 #define STACK_CHECK_MAX_FRAME_SIZE \
1369   ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1370 #endif
1371
1372 /* This is arbitrary, but should be large enough everywhere.  */
1373 #ifndef STACK_CHECK_FIXED_FRAME_SIZE
1374 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1375 #endif
1376
1377 /* Provide a reasonable default for the maximum size of an object to
1378    allocate in the fixed frame.  We may need to be able to make this
1379    controllable by the user at some point.  */
1380 #ifndef STACK_CHECK_MAX_VAR_SIZE
1381 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1382 #endif
1383
1384 #ifndef SWITCHABLE_TARGET
1385 #define SWITCHABLE_TARGET 0
1386 #endif
1387
1388 #endif /* GCC_INSN_FLAGS_H  */
1389
1390 #endif  /* ! GCC_DEFAULTS_H */