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, 2011 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 /* How to start an assembler comment. */ 32 #ifndef ASM_COMMENT_START 33 #define ASM_COMMENT_START ";#" 34 #endif 35 36 /* Store in OUTPUT a string (made with alloca) containing an 37 assembler-name for a local static variable or function named NAME. 38 LABELNO is an integer which is different for each call. */ 39 40 #ifndef ASM_PN_FORMAT 41 # ifndef NO_DOT_IN_LABEL 42 # define ASM_PN_FORMAT "%s.%lu" 43 # else 44 # ifndef NO_DOLLAR_IN_LABEL 45 # define ASM_PN_FORMAT "%s$%lu" 46 # else 47 # define ASM_PN_FORMAT "__%s_%lu" 48 # endif 49 # endif 50 #endif /* ! ASM_PN_FORMAT */ 51 52 #ifndef ASM_FORMAT_PRIVATE_NAME 53 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ 54 do { const char *const name_ = (NAME); \ 55 char *const output_ = (OUTPUT) = \ 56 (char *) alloca (strlen (name_) + 32); \ 57 sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \ 58 } while (0) 59 #endif 60 61 /* Choose a reasonable default for ASM_OUTPUT_ASCII. */ 62 63 #ifndef ASM_OUTPUT_ASCII 64 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \ 65 do { \ 66 FILE *_hide_asm_out_file = (MYFILE); \ 67 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \ 68 int _hide_thissize = (MYLENGTH); \ 69 { \ 70 FILE *asm_out_file = _hide_asm_out_file; \ 71 const unsigned char *p = _hide_p; \ 72 int thissize = _hide_thissize; \ 73 int i; \ 74 fprintf (asm_out_file, "\t.ascii \""); \ 75 \ 76 for (i = 0; i < thissize; i++) \ 77 { \ 78 int c = p[i]; \ 79 if (c == '\"' || c == '\\') \ 80 putc ('\\', asm_out_file); \ 81 if (ISPRINT(c)) \ 82 putc (c, asm_out_file); \ 83 else \ 84 { \ 85 fprintf (asm_out_file, "\\%o", c); \ 86 /* After an octal-escape, if a digit follows, \ 87 terminate one string constant and start another. \ 88 The VAX assembler fails to stop reading the escape \ 89 after three digits, so this is the only way we \ 90 can get it to parse the data properly. */ \ 91 if (i < thissize - 1 && ISDIGIT(p[i + 1])) \ 92 fprintf (asm_out_file, "\"\n\t.ascii \""); \ 93 } \ 94 } \ 95 fprintf (asm_out_file, "\"\n"); \ 96 } \ 97 } \ 98 while (0) 99 #endif 100 101 /* This is how we tell the assembler to equate two values. */ 102 #ifdef SET_ASM_OP 103 #ifndef ASM_OUTPUT_DEF 104 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 105 do { fprintf ((FILE), "%s", SET_ASM_OP); \ 106 assemble_name (FILE, LABEL1); \ 107 fprintf (FILE, ","); \ 108 assemble_name (FILE, LABEL2); \ 109 fprintf (FILE, "\n"); \ 110 } while (0) 111 #endif 112 #endif 113 114 #ifndef IFUNC_ASM_TYPE 115 #define IFUNC_ASM_TYPE "gnu_indirect_function" 116 #endif 117 118 #ifndef TLS_COMMON_ASM_OP 119 #define TLS_COMMON_ASM_OP ".tls_common" 120 #endif 121 122 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON) 123 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \ 124 do \ 125 { \ 126 fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \ 127 assemble_name ((FILE), (NAME)); \ 128 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \ 129 (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \ 130 } \ 131 while (0) 132 #endif 133 134 /* Decide whether to defer emitting the assembler output for an equate 135 of two values. The default is to not defer output. */ 136 #ifndef TARGET_DEFERRED_OUTPUT_DEFS 137 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false 138 #endif 139 140 /* This is how to output the definition of a user-level label named 141 NAME, such as the label on variable NAME. */ 142 143 #ifndef ASM_OUTPUT_LABEL 144 #define ASM_OUTPUT_LABEL(FILE,NAME) \ 145 do { \ 146 assemble_name ((FILE), (NAME)); \ 147 fputs (":\n", (FILE)); \ 148 } while (0) 149 #endif 150 151 /* This is how to output the definition of a user-level label named 152 NAME, such as the label on a function. */ 153 154 #ifndef ASM_OUTPUT_FUNCTION_LABEL 155 #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \ 156 ASM_OUTPUT_LABEL ((FILE), (NAME)) 157 #endif 158 159 /* Output the definition of a compiler-generated label named NAME. */ 160 #ifndef ASM_OUTPUT_INTERNAL_LABEL 161 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \ 162 do { \ 163 assemble_name_raw ((FILE), (NAME)); \ 164 fputs (":\n", (FILE)); \ 165 } while (0) 166 #endif 167 168 /* This is how to output a reference to a user-level label named NAME. */ 169 170 #ifndef ASM_OUTPUT_LABELREF 171 #define ASM_OUTPUT_LABELREF(FILE,NAME) \ 172 do { \ 173 fputs (user_label_prefix, (FILE)); \ 174 fputs ((NAME), (FILE)); \ 175 } while (0); 176 #endif 177 178 /* Allow target to print debug info labels specially. This is useful for 179 VLIW targets, since debug info labels should go into the middle of 180 instruction bundles instead of breaking them. */ 181 182 #ifndef ASM_OUTPUT_DEBUG_LABEL 183 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ 184 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM) 185 #endif 186 187 /* This is how we tell the assembler that a symbol is weak. */ 188 #ifndef ASM_OUTPUT_WEAK_ALIAS 189 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF) 190 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \ 191 do \ 192 { \ 193 ASM_WEAKEN_LABEL (STREAM, NAME); \ 194 if (VALUE) \ 195 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \ 196 } \ 197 while (0) 198 #endif 199 #endif 200 201 /* This is how we tell the assembler that a symbol is a weak alias to 202 another symbol that doesn't require the other symbol to be defined. 203 Uses of the former will turn into weak uses of the latter, i.e., 204 uses that, in case the latter is undefined, will not cause errors, 205 and will add it to the symbol table as weak undefined. However, if 206 the latter is referenced directly, a strong reference prevails. */ 207 #ifndef ASM_OUTPUT_WEAKREF 208 #if defined HAVE_GAS_WEAKREF 209 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \ 210 do \ 211 { \ 212 fprintf ((FILE), "\t.weakref\t"); \ 213 assemble_name ((FILE), (NAME)); \ 214 fprintf ((FILE), ","); \ 215 assemble_name ((FILE), (VALUE)); \ 216 fprintf ((FILE), "\n"); \ 217 } \ 218 while (0) 219 #endif 220 #endif 221 222 /* How to emit a .type directive. */ 223 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE 224 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT 225 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \ 226 do \ 227 { \ 228 fputs (TYPE_ASM_OP, STREAM); \ 229 assemble_name (STREAM, NAME); \ 230 fputs (", ", STREAM); \ 231 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \ 232 putc ('\n', STREAM); \ 233 } \ 234 while (0) 235 #endif 236 #endif 237 238 /* How to emit a .size directive. */ 239 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE 240 #ifdef SIZE_ASM_OP 241 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \ 242 do \ 243 { \ 244 HOST_WIDE_INT size_ = (SIZE); \ 245 fputs (SIZE_ASM_OP, STREAM); \ 246 assemble_name (STREAM, NAME); \ 247 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \ 248 } \ 249 while (0) 250 251 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \ 252 do \ 253 { \ 254 fputs (SIZE_ASM_OP, STREAM); \ 255 assemble_name (STREAM, NAME); \ 256 fputs (", .-", STREAM); \ 257 assemble_name (STREAM, NAME); \ 258 putc ('\n', STREAM); \ 259 } \ 260 while (0) 261 262 #endif 263 #endif 264 265 /* This determines whether or not we support weak symbols. SUPPORTS_WEAK 266 must be a preprocessor constant. */ 267 #ifndef SUPPORTS_WEAK 268 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL) 269 #define SUPPORTS_WEAK 1 270 #else 271 #define SUPPORTS_WEAK 0 272 #endif 273 #endif 274 275 /* This determines whether or not we support weak symbols during target 276 code generation. TARGET_SUPPORTS_WEAK can be any valid C expression. */ 277 #ifndef TARGET_SUPPORTS_WEAK 278 #define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK) 279 #endif 280 281 /* This determines whether or not we support the discriminator 282 attribute in the .loc directive. */ 283 #ifndef SUPPORTS_DISCRIMINATOR 284 #ifdef HAVE_GAS_DISCRIMINATOR 285 #define SUPPORTS_DISCRIMINATOR 1 286 #else 287 #define SUPPORTS_DISCRIMINATOR 0 288 #endif 289 #endif 290 291 /* This determines whether or not we support link-once semantics. */ 292 #ifndef SUPPORTS_ONE_ONLY 293 #ifdef MAKE_DECL_ONE_ONLY 294 #define SUPPORTS_ONE_ONLY 1 295 #else 296 #define SUPPORTS_ONE_ONLY 0 297 #endif 298 #endif 299 300 /* This determines whether weak symbols must be left out of a static 301 archive's table of contents. Defining this macro to be nonzero has 302 the consequence that certain symbols will not be made weak that 303 otherwise would be. The C++ ABI requires this macro to be zero; 304 see the documentation. */ 305 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC 306 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0 307 #endif 308 309 /* This determines whether or not we need linkonce unwind information. */ 310 #ifndef TARGET_USES_WEAK_UNWIND_INFO 311 #define TARGET_USES_WEAK_UNWIND_INFO 0 312 #endif 313 314 /* By default, there is no prefix on user-defined symbols. */ 315 #ifndef USER_LABEL_PREFIX 316 #define USER_LABEL_PREFIX "" 317 #endif 318 319 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to 320 provide a weak attribute. Else define it to nothing. 321 322 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is 323 not available at that time. 324 325 Note, this is only for use by target files which we know are to be 326 compiled by GCC. */ 327 #ifndef TARGET_ATTRIBUTE_WEAK 328 # if SUPPORTS_WEAK 329 # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak)) 330 # else 331 # define TARGET_ATTRIBUTE_WEAK 332 # endif 333 #endif 334 335 /* Determines whether we may use common symbols to represent one-only 336 semantics (a.k.a. "vague linkage"). */ 337 #ifndef USE_COMMON_FOR_ONE_ONLY 338 # define USE_COMMON_FOR_ONE_ONLY 1 339 #endif 340 341 /* By default we can assume that all global symbols are in one namespace, 342 across all shared libraries. */ 343 #ifndef MULTIPLE_SYMBOL_SPACES 344 # define MULTIPLE_SYMBOL_SPACES 0 345 #endif 346 347 /* If the target supports init_priority C++ attribute, give 348 SUPPORTS_INIT_PRIORITY a nonzero value. */ 349 #ifndef SUPPORTS_INIT_PRIORITY 350 #define SUPPORTS_INIT_PRIORITY 1 351 #endif /* SUPPORTS_INIT_PRIORITY */ 352 353 /* If duplicate library search directories can be removed from a 354 linker command without changing the linker's semantics, give this 355 symbol a nonzero. */ 356 #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 357 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0 358 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ 359 360 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that 361 the rest of the DWARF 2 frame unwind support is also provided. */ 362 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) 363 #define DWARF2_UNWIND_INFO 1 364 #endif 365 366 /* If we have named sections, and we're using crtstuff to run ctors, 367 use them for registering eh frame information. */ 368 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \ 369 && !defined(EH_FRAME_IN_DATA_SECTION) 370 #ifndef EH_FRAME_SECTION_NAME 371 #define EH_FRAME_SECTION_NAME ".eh_frame" 372 #endif 373 #endif 374 375 /* On many systems, different EH table encodings are used under 376 difference circumstances. Some will require runtime relocations; 377 some will not. For those that do not require runtime relocations, 378 we would like to make the table read-only. However, since the 379 read-only tables may need to be combined with read-write tables 380 that do require runtime relocation, it is not safe to make the 381 tables read-only unless the linker will merge read-only and 382 read-write sections into a single read-write section. If your 383 linker does not have this ability, but your system is such that no 384 encoding used with non-PIC code will ever require a runtime 385 relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in 386 your target configuration file. */ 387 #ifndef EH_TABLES_CAN_BE_READ_ONLY 388 #ifdef HAVE_LD_RO_RW_SECTION_MIXING 389 #define EH_TABLES_CAN_BE_READ_ONLY 1 390 #else 391 #define EH_TABLES_CAN_BE_READ_ONLY 0 392 #endif 393 #endif 394 395 /* If we have named section and we support weak symbols, then use the 396 .jcr section for recording java classes which need to be registered 397 at program start-up time. */ 398 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK 399 #ifndef JCR_SECTION_NAME 400 #define JCR_SECTION_NAME ".jcr" 401 #endif 402 #endif 403 404 /* This decision to use a .jcr section can be overridden by defining 405 USE_JCR_SECTION to 0 in target file. This is necessary if target 406 can define JCR_SECTION_NAME but does not have crtstuff or 407 linker support for .jcr section. */ 408 #ifndef TARGET_USE_JCR_SECTION 409 #ifdef JCR_SECTION_NAME 410 #define TARGET_USE_JCR_SECTION 1 411 #else 412 #define TARGET_USE_JCR_SECTION 0 413 #endif 414 #endif 415 416 /* Number of hardware registers that go into the DWARF-2 unwind info. 417 If not defined, equals FIRST_PSEUDO_REGISTER */ 418 419 #ifndef DWARF_FRAME_REGISTERS 420 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER 421 #endif 422 423 /* Offsets recorded in opcodes are a multiple of this alignment factor. */ 424 #ifndef DWARF_CIE_DATA_ALIGNMENT 425 #ifdef STACK_GROWS_DOWNWARD 426 #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) 427 #else 428 #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) 429 #endif 430 #endif 431 432 /* The DWARF 2 CFA column which tracks the return address. Normally this 433 is the column for PC, or the first column after all of the hard 434 registers. */ 435 #ifndef DWARF_FRAME_RETURN_COLUMN 436 #ifdef PC_REGNUM 437 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) 438 #else 439 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS 440 #endif 441 #endif 442 443 /* How to renumber registers for dbx and gdb. If not defined, assume 444 no renumbering is necessary. */ 445 446 #ifndef DBX_REGISTER_NUMBER 447 #define DBX_REGISTER_NUMBER(REGNO) (REGNO) 448 #endif 449 450 /* The mapping from gcc register number to DWARF 2 CFA column number. 451 By default, we just provide columns for all registers. */ 452 #ifndef DWARF_FRAME_REGNUM 453 #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) 454 #endif 455 456 /* Map register numbers held in the call frame info that gcc has 457 collected using DWARF_FRAME_REGNUM to those that should be output in 458 .debug_frame and .eh_frame. */ 459 #ifndef DWARF2_FRAME_REG_OUT 460 #define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO) 461 #endif 462 463 /* The size of addresses as they appear in the Dwarf 2 data. 464 Some architectures use word addresses to refer to code locations, 465 but Dwarf 2 info always uses byte addresses. On such machines, 466 Dwarf 2 addresses need to be larger than the architecture's 467 pointers. */ 468 #ifndef DWARF2_ADDR_SIZE 469 #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT) 470 #endif 471 472 /* The size in bytes of a DWARF field indicating an offset or length 473 relative to a debug info section, specified to be 4 bytes in the 474 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same 475 as PTR_SIZE. */ 476 #ifndef DWARF_OFFSET_SIZE 477 #define DWARF_OFFSET_SIZE 4 478 #endif 479 480 /* The size in bytes of a DWARF 4 type signature. */ 481 #ifndef DWARF_TYPE_SIGNATURE_SIZE 482 #define DWARF_TYPE_SIGNATURE_SIZE 8 483 #endif 484 485 /* Default sizes for base C types. If the sizes are different for 486 your target, you should override these values by defining the 487 appropriate symbols in your tm.h file. */ 488 489 #ifndef BITS_PER_UNIT 490 #define BITS_PER_UNIT 8 491 #endif 492 493 #ifndef BITS_PER_WORD 494 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD) 495 #endif 496 497 #ifndef CHAR_TYPE_SIZE 498 #define CHAR_TYPE_SIZE BITS_PER_UNIT 499 #endif 500 501 #ifndef BOOL_TYPE_SIZE 502 /* `bool' has size and alignment `1', on almost all platforms. */ 503 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE 504 #endif 505 506 #ifndef SHORT_TYPE_SIZE 507 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) 508 #endif 509 510 #ifndef INT_TYPE_SIZE 511 #define INT_TYPE_SIZE BITS_PER_WORD 512 #endif 513 514 #ifndef LONG_TYPE_SIZE 515 #define LONG_TYPE_SIZE BITS_PER_WORD 516 #endif 517 518 #ifndef LONG_LONG_TYPE_SIZE 519 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) 520 #endif 521 522 #ifndef WCHAR_TYPE_SIZE 523 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE 524 #endif 525 526 #ifndef FLOAT_TYPE_SIZE 527 #define FLOAT_TYPE_SIZE BITS_PER_WORD 528 #endif 529 530 #ifndef DOUBLE_TYPE_SIZE 531 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) 532 #endif 533 534 #ifndef LONG_DOUBLE_TYPE_SIZE 535 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) 536 #endif 537 538 #ifndef DECIMAL32_TYPE_SIZE 539 #define DECIMAL32_TYPE_SIZE 32 540 #endif 541 542 #ifndef DECIMAL64_TYPE_SIZE 543 #define DECIMAL64_TYPE_SIZE 64 544 #endif 545 546 #ifndef DECIMAL128_TYPE_SIZE 547 #define DECIMAL128_TYPE_SIZE 128 548 #endif 549 550 #ifndef SHORT_FRACT_TYPE_SIZE 551 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT 552 #endif 553 554 #ifndef FRACT_TYPE_SIZE 555 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2) 556 #endif 557 558 #ifndef LONG_FRACT_TYPE_SIZE 559 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4) 560 #endif 561 562 #ifndef LONG_LONG_FRACT_TYPE_SIZE 563 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8) 564 #endif 565 566 #ifndef SHORT_ACCUM_TYPE_SIZE 567 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2) 568 #endif 569 570 #ifndef ACCUM_TYPE_SIZE 571 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2) 572 #endif 573 574 #ifndef LONG_ACCUM_TYPE_SIZE 575 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2) 576 #endif 577 578 #ifndef LONG_LONG_ACCUM_TYPE_SIZE 579 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2) 580 #endif 581 582 /* We let tm.h override the types used here, to handle trivial differences 583 such as the choice of unsigned int or long unsigned int for size_t. 584 When machines start needing nontrivial differences in the size type, 585 it would be best to do something here to figure out automatically 586 from other information what type to use. */ 587 588 #ifndef SIZE_TYPE 589 #define SIZE_TYPE "long unsigned int" 590 #endif 591 592 #ifndef PID_TYPE 593 #define PID_TYPE "int" 594 #endif 595 596 /* If GCC knows the exact uint_least16_t and uint_least32_t types from 597 <stdint.h>, use them for char16_t and char32_t. Otherwise, use 598 these guesses; getting the wrong type of a given width will not 599 affect C++ name mangling because in C++ these are distinct types 600 not typedefs. */ 601 602 #ifdef UINT_LEAST16_TYPE 603 #define CHAR16_TYPE UINT_LEAST16_TYPE 604 #else 605 #define CHAR16_TYPE "short unsigned int" 606 #endif 607 608 #ifdef UINT_LEAST32_TYPE 609 #define CHAR32_TYPE UINT_LEAST32_TYPE 610 #else 611 #define CHAR32_TYPE "unsigned int" 612 #endif 613 614 #ifndef WCHAR_TYPE 615 #define WCHAR_TYPE "int" 616 #endif 617 618 /* WCHAR_TYPE gets overridden by -fshort-wchar. */ 619 #define MODIFIED_WCHAR_TYPE \ 620 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE) 621 622 #ifndef PTRDIFF_TYPE 623 #define PTRDIFF_TYPE "long int" 624 #endif 625 626 #ifndef WINT_TYPE 627 #define WINT_TYPE "unsigned int" 628 #endif 629 630 #ifndef INTMAX_TYPE 631 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 632 ? "int" \ 633 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 634 ? "long int" \ 635 : "long long int")) 636 #endif 637 638 #ifndef UINTMAX_TYPE 639 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 640 ? "unsigned int" \ 641 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 642 ? "long unsigned int" \ 643 : "long long unsigned int")) 644 #endif 645 646 647 /* There are no default definitions of these <stdint.h> types. */ 648 649 #ifndef SIG_ATOMIC_TYPE 650 #define SIG_ATOMIC_TYPE ((const char *) NULL) 651 #endif 652 653 #ifndef INT8_TYPE 654 #define INT8_TYPE ((const char *) NULL) 655 #endif 656 657 #ifndef INT16_TYPE 658 #define INT16_TYPE ((const char *) NULL) 659 #endif 660 661 #ifndef INT32_TYPE 662 #define INT32_TYPE ((const char *) NULL) 663 #endif 664 665 #ifndef INT64_TYPE 666 #define INT64_TYPE ((const char *) NULL) 667 #endif 668 669 #ifndef UINT8_TYPE 670 #define UINT8_TYPE ((const char *) NULL) 671 #endif 672 673 #ifndef UINT16_TYPE 674 #define UINT16_TYPE ((const char *) NULL) 675 #endif 676 677 #ifndef UINT32_TYPE 678 #define UINT32_TYPE ((const char *) NULL) 679 #endif 680 681 #ifndef UINT64_TYPE 682 #define UINT64_TYPE ((const char *) NULL) 683 #endif 684 685 #ifndef INT_LEAST8_TYPE 686 #define INT_LEAST8_TYPE ((const char *) NULL) 687 #endif 688 689 #ifndef INT_LEAST16_TYPE 690 #define INT_LEAST16_TYPE ((const char *) NULL) 691 #endif 692 693 #ifndef INT_LEAST32_TYPE 694 #define INT_LEAST32_TYPE ((const char *) NULL) 695 #endif 696 697 #ifndef INT_LEAST64_TYPE 698 #define INT_LEAST64_TYPE ((const char *) NULL) 699 #endif 700 701 #ifndef UINT_LEAST8_TYPE 702 #define UINT_LEAST8_TYPE ((const char *) NULL) 703 #endif 704 705 #ifndef UINT_LEAST16_TYPE 706 #define UINT_LEAST16_TYPE ((const char *) NULL) 707 #endif 708 709 #ifndef UINT_LEAST32_TYPE 710 #define UINT_LEAST32_TYPE ((const char *) NULL) 711 #endif 712 713 #ifndef UINT_LEAST64_TYPE 714 #define UINT_LEAST64_TYPE ((const char *) NULL) 715 #endif 716 717 #ifndef INT_FAST8_TYPE 718 #define INT_FAST8_TYPE ((const char *) NULL) 719 #endif 720 721 #ifndef INT_FAST16_TYPE 722 #define INT_FAST16_TYPE ((const char *) NULL) 723 #endif 724 725 #ifndef INT_FAST32_TYPE 726 #define INT_FAST32_TYPE ((const char *) NULL) 727 #endif 728 729 #ifndef INT_FAST64_TYPE 730 #define INT_FAST64_TYPE ((const char *) NULL) 731 #endif 732 733 #ifndef UINT_FAST8_TYPE 734 #define UINT_FAST8_TYPE ((const char *) NULL) 735 #endif 736 737 #ifndef UINT_FAST16_TYPE 738 #define UINT_FAST16_TYPE ((const char *) NULL) 739 #endif 740 741 #ifndef UINT_FAST32_TYPE 742 #define UINT_FAST32_TYPE ((const char *) NULL) 743 #endif 744 745 #ifndef UINT_FAST64_TYPE 746 #define UINT_FAST64_TYPE ((const char *) NULL) 747 #endif 748 749 #ifndef INTPTR_TYPE 750 #define INTPTR_TYPE ((const char *) NULL) 751 #endif 752 753 #ifndef UINTPTR_TYPE 754 #define UINTPTR_TYPE ((const char *) NULL) 755 #endif 756 757 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ 758 #ifndef POINTER_SIZE 759 #define POINTER_SIZE BITS_PER_WORD 760 #endif 761 762 #ifndef PIC_OFFSET_TABLE_REGNUM 763 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM 764 #endif 765 766 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 767 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0 768 #endif 769 770 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES 771 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 772 #endif 773 774 #ifndef TARGET_DECLSPEC 775 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES 776 /* If the target supports the "dllimport" attribute, users are 777 probably used to the "__declspec" syntax. */ 778 #define TARGET_DECLSPEC 1 779 #else 780 #define TARGET_DECLSPEC 0 781 #endif 782 #endif 783 784 /* By default, the preprocessor should be invoked the same way in C++ 785 as in C. */ 786 #ifndef CPLUSPLUS_CPP_SPEC 787 #ifdef CPP_SPEC 788 #define CPLUSPLUS_CPP_SPEC CPP_SPEC 789 #endif 790 #endif 791 792 #ifndef ACCUMULATE_OUTGOING_ARGS 793 #define ACCUMULATE_OUTGOING_ARGS 0 794 #endif 795 796 /* By default, use the GNU runtime for Objective C. */ 797 #ifndef NEXT_OBJC_RUNTIME 798 #define NEXT_OBJC_RUNTIME 0 799 #endif 800 801 /* Supply a default definition for PUSH_ARGS. */ 802 #ifndef PUSH_ARGS 803 #ifdef PUSH_ROUNDING 804 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS 805 #else 806 #define PUSH_ARGS 0 807 #endif 808 #endif 809 810 /* Decide whether a function's arguments should be processed 811 from first to last or from last to first. 812 813 They should if the stack and args grow in opposite directions, but 814 only if we have push insns. */ 815 816 #ifdef PUSH_ROUNDING 817 818 #ifndef PUSH_ARGS_REVERSED 819 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) 820 #define PUSH_ARGS_REVERSED PUSH_ARGS 821 #endif 822 #endif 823 824 #endif 825 826 #ifndef PUSH_ARGS_REVERSED 827 #define PUSH_ARGS_REVERSED 0 828 #endif 829 830 /* Default value for the alignment (in bits) a C conformant malloc has to 831 provide. This default is intended to be safe and always correct. */ 832 #ifndef MALLOC_ABI_ALIGNMENT 833 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD 834 #endif 835 836 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. 837 STACK_BOUNDARY is required. */ 838 #ifndef PREFERRED_STACK_BOUNDARY 839 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY 840 #endif 841 842 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not 843 defined. */ 844 #ifndef INCOMING_STACK_BOUNDARY 845 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY 846 #endif 847 848 #ifndef TARGET_DEFAULT_PACK_STRUCT 849 #define TARGET_DEFAULT_PACK_STRUCT 0 850 #endif 851 852 /* By default, the vtable entries are void pointers, the so the alignment 853 is the same as pointer alignment. The value of this macro specifies 854 the alignment of the vtable entry in bits. It should be defined only 855 when special alignment is necessary. */ 856 #ifndef TARGET_VTABLE_ENTRY_ALIGN 857 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE 858 #endif 859 860 /* There are a few non-descriptor entries in the vtable at offsets below 861 zero. If these entries must be padded (say, to preserve the alignment 862 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of 863 words in each data entry. */ 864 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE 865 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 866 #endif 867 868 /* Decide whether it is safe to use a local alias for a virtual function 869 when constructing thunks. */ 870 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P 871 #ifdef ASM_OUTPUT_DEF 872 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 873 #else 874 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 875 #endif 876 #endif 877 878 /* Select a format to encode pointers in exception handling data. We 879 prefer those that result in fewer dynamic relocations. Assume no 880 special support here and encode direct references. */ 881 #ifndef ASM_PREFERRED_EH_DATA_FORMAT 882 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr 883 #endif 884 885 /* By default, the C++ compiler will use the lowest bit of the pointer 886 to function to indicate a pointer-to-member-function points to a 887 virtual member function. However, if FUNCTION_BOUNDARY indicates 888 function addresses aren't always even, the lowest bit of the delta 889 field will be used. */ 890 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION 891 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ 892 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ 893 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) 894 #endif 895 896 #ifndef DEFAULT_GDB_EXTENSIONS 897 #define DEFAULT_GDB_EXTENSIONS 1 898 #endif 899 900 /* If more than one debugging type is supported, you must define 901 PREFERRED_DEBUGGING_TYPE to choose the default. */ 902 903 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \ 904 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ 905 + defined (VMS_DEBUGGING_INFO)) 906 #ifndef PREFERRED_DEBUGGING_TYPE 907 #error You must define PREFERRED_DEBUGGING_TYPE 908 #endif /* no PREFERRED_DEBUGGING_TYPE */ 909 910 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE 911 here so other code needn't care. */ 912 #elif defined DBX_DEBUGGING_INFO 913 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 914 915 #elif defined SDB_DEBUGGING_INFO 916 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG 917 918 #elif defined DWARF2_DEBUGGING_INFO 919 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 920 921 #elif defined VMS_DEBUGGING_INFO 922 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG 923 924 #elif defined XCOFF_DEBUGGING_INFO 925 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG 926 927 #else 928 /* No debugging format is supported by this target. */ 929 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG 930 #endif 931 932 #ifndef LARGEST_EXPONENT_IS_NORMAL 933 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0 934 #endif 935 936 #ifndef ROUND_TOWARDS_ZERO 937 #define ROUND_TOWARDS_ZERO 0 938 #endif 939 940 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL 941 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false 942 #endif 943 944 /* True if the targets integer-comparison functions return { 0, 1, 2 945 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used 946 instead. The libgcc routines are biased. */ 947 #ifndef TARGET_LIB_INT_CMP_BIASED 948 #define TARGET_LIB_INT_CMP_BIASED (true) 949 #endif 950 951 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, 952 then the word-endianness is the same as for integers. */ 953 #ifndef FLOAT_WORDS_BIG_ENDIAN 954 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 955 #endif 956 957 #ifndef REG_WORDS_BIG_ENDIAN 958 #define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 959 #endif 960 961 #ifdef TARGET_FLT_EVAL_METHOD 962 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1 963 #else 964 #define TARGET_FLT_EVAL_METHOD 0 965 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0 966 #endif 967 968 #ifndef TARGET_DEC_EVAL_METHOD 969 #define TARGET_DEC_EVAL_METHOD 2 970 #endif 971 972 #ifndef HAS_LONG_COND_BRANCH 973 #define HAS_LONG_COND_BRANCH 0 974 #endif 975 976 #ifndef HAS_LONG_UNCOND_BRANCH 977 #define HAS_LONG_UNCOND_BRANCH 0 978 #endif 979 980 /* Determine whether __cxa_atexit, rather than atexit, is used to 981 register C++ destructors for local statics and global objects. */ 982 #ifndef DEFAULT_USE_CXA_ATEXIT 983 #define DEFAULT_USE_CXA_ATEXIT 0 984 #endif 985 986 /* If none of these macros are defined, the port must use the new 987 technique of defining constraints in the machine description. 988 tm_p.h will define those macros that machine-independent code 989 still uses. */ 990 #if !defined CONSTRAINT_LEN \ 991 && !defined REG_CLASS_FROM_LETTER \ 992 && !defined REG_CLASS_FROM_CONSTRAINT \ 993 && !defined CONST_OK_FOR_LETTER_P \ 994 && !defined CONST_OK_FOR_CONSTRAINT_P \ 995 && !defined CONST_DOUBLE_OK_FOR_LETTER_P \ 996 && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P \ 997 && !defined EXTRA_CONSTRAINT \ 998 && !defined EXTRA_CONSTRAINT_STR \ 999 && !defined EXTRA_MEMORY_CONSTRAINT \ 1000 && !defined EXTRA_ADDRESS_CONSTRAINT 1001 1002 #define USE_MD_CONSTRAINTS 1003 1004 #if GCC_VERSION >= 3000 && defined IN_GCC 1005 /* These old constraint macros shouldn't appear anywhere in a 1006 configuration using MD constraint definitions. */ 1007 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \ 1008 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT 1009 #endif 1010 1011 #else /* old constraint mechanism in use */ 1012 1013 /* Determine whether extra constraint letter should be handled 1014 via address reload (like 'o'). */ 1015 #ifndef EXTRA_MEMORY_CONSTRAINT 1016 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0 1017 #endif 1018 1019 /* Determine whether extra constraint letter should be handled 1020 as an address (like 'p'). */ 1021 #ifndef EXTRA_ADDRESS_CONSTRAINT 1022 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0 1023 #endif 1024 1025 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN 1026 for all the characters that it does not want to change, so things like the 1027 'length' of a digit in a matching constraint is an implementation detail, 1028 and not part of the interface. */ 1029 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1 1030 1031 #ifndef CONSTRAINT_LEN 1032 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR) 1033 #endif 1034 1035 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P) 1036 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C) 1037 #endif 1038 1039 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P) 1040 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \ 1041 CONST_DOUBLE_OK_FOR_LETTER_P (OP, C) 1042 #endif 1043 1044 #ifndef REG_CLASS_FROM_CONSTRAINT 1045 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C) 1046 #endif 1047 1048 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR) 1049 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C) 1050 #endif 1051 1052 #endif /* old constraint mechanism in use */ 1053 1054 /* Determine whether the entire c99 runtime 1055 is present in the runtime library. */ 1056 #ifndef TARGET_C99_FUNCTIONS 1057 #define TARGET_C99_FUNCTIONS 0 1058 #endif 1059 1060 /* Determine whether the target runtime library has 1061 a sincos implementation following the GNU extension. */ 1062 #ifndef TARGET_HAS_SINCOS 1063 #define TARGET_HAS_SINCOS 0 1064 #endif 1065 1066 /* Determin whether the target runtime library is Bionic */ 1067 #ifndef TARGET_HAS_BIONIC 1068 #define TARGET_HAS_BIONIC 0 1069 #endif 1070 1071 /* Indicate that CLZ and CTZ are undefined at zero. */ 1072 #ifndef CLZ_DEFINED_VALUE_AT_ZERO 1073 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 1074 #endif 1075 #ifndef CTZ_DEFINED_VALUE_AT_ZERO 1076 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 1077 #endif 1078 1079 /* Provide a default value for STORE_FLAG_VALUE. */ 1080 #ifndef STORE_FLAG_VALUE 1081 #define STORE_FLAG_VALUE 1 1082 #endif 1083 1084 /* This macro is used to determine what the largest unit size that 1085 move_by_pieces can use is. */ 1086 1087 /* MOVE_MAX_PIECES is the number of bytes at a time which we can 1088 move efficiently, as opposed to MOVE_MAX which is the maximum 1089 number of bytes we can move with a single instruction. */ 1090 1091 #ifndef MOVE_MAX_PIECES 1092 #define MOVE_MAX_PIECES MOVE_MAX 1093 #endif 1094 1095 #ifndef MAX_MOVE_MAX 1096 #define MAX_MOVE_MAX MOVE_MAX 1097 #endif 1098 1099 #ifndef MIN_UNITS_PER_WORD 1100 #define MIN_UNITS_PER_WORD UNITS_PER_WORD 1101 #endif 1102 1103 #ifndef MAX_BITS_PER_WORD 1104 #define MAX_BITS_PER_WORD BITS_PER_WORD 1105 #endif 1106 1107 #ifndef STACK_POINTER_OFFSET 1108 #define STACK_POINTER_OFFSET 0 1109 #endif 1110 1111 #ifndef LOCAL_REGNO 1112 #define LOCAL_REGNO(REGNO) 0 1113 #endif 1114 1115 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, 1116 the stack pointer does not matter. The value is tested only in 1117 functions that have frame pointers. */ 1118 #ifndef EXIT_IGNORE_STACK 1119 #define EXIT_IGNORE_STACK 0 1120 #endif 1121 1122 /* Assume that case vectors are not pc-relative. */ 1123 #ifndef CASE_VECTOR_PC_RELATIVE 1124 #define CASE_VECTOR_PC_RELATIVE 0 1125 #endif 1126 1127 /* Assume that trampolines need function alignment. */ 1128 #ifndef TRAMPOLINE_ALIGNMENT 1129 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY 1130 #endif 1131 1132 /* Register mappings for target machines without register windows. */ 1133 #ifndef INCOMING_REGNO 1134 #define INCOMING_REGNO(N) (N) 1135 #endif 1136 1137 #ifndef OUTGOING_REGNO 1138 #define OUTGOING_REGNO(N) (N) 1139 #endif 1140 1141 #ifndef SHIFT_COUNT_TRUNCATED 1142 #define SHIFT_COUNT_TRUNCATED 0 1143 #endif 1144 1145 #ifndef LEGITIMATE_PIC_OPERAND_P 1146 #define LEGITIMATE_PIC_OPERAND_P(X) 1 1147 #endif 1148 1149 #ifndef TARGET_MEM_CONSTRAINT 1150 #define TARGET_MEM_CONSTRAINT 'm' 1151 #endif 1152 1153 #ifndef REVERSIBLE_CC_MODE 1154 #define REVERSIBLE_CC_MODE(MODE) 0 1155 #endif 1156 1157 /* Biggest alignment supported by the object file format of this machine. */ 1158 #ifndef MAX_OFILE_ALIGNMENT 1159 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT 1160 #endif 1161 1162 #ifndef FRAME_GROWS_DOWNWARD 1163 #define FRAME_GROWS_DOWNWARD 0 1164 #endif 1165 1166 /* On most machines, the CFA coincides with the first incoming parm. */ 1167 #ifndef ARG_POINTER_CFA_OFFSET 1168 #define ARG_POINTER_CFA_OFFSET(FNDECL) \ 1169 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size) 1170 #endif 1171 1172 /* On most machines, we use the CFA as DW_AT_frame_base. */ 1173 #ifndef CFA_FRAME_BASE_OFFSET 1174 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0 1175 #endif 1176 1177 /* The offset from the incoming value of %sp to the top of the stack frame 1178 for the current function. */ 1179 #ifndef INCOMING_FRAME_SP_OFFSET 1180 #define INCOMING_FRAME_SP_OFFSET 0 1181 #endif 1182 1183 #ifndef HARD_REGNO_NREGS_HAS_PADDING 1184 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0 1185 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1 1186 #endif 1187 1188 #ifndef OUTGOING_REG_PARM_STACK_SPACE 1189 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0 1190 #endif 1191 1192 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by 1193 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best 1194 effort stack alignment supported by the backend. If the backend 1195 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and 1196 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack 1197 boundary will limit the maximum guaranteed stack alignment. */ 1198 #ifdef MAX_STACK_ALIGNMENT 1199 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT 1200 #else 1201 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY 1202 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY 1203 #endif 1204 1205 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY) 1206 1207 #ifndef LOCAL_ALIGNMENT 1208 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT 1209 #endif 1210 1211 #ifndef STACK_SLOT_ALIGNMENT 1212 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \ 1213 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN)) 1214 #endif 1215 1216 #ifndef LOCAL_DECL_ALIGNMENT 1217 #define LOCAL_DECL_ALIGNMENT(DECL) \ 1218 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL)) 1219 #endif 1220 1221 #ifndef MINIMUM_ALIGNMENT 1222 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN) 1223 #endif 1224 1225 /* Alignment value for attribute ((aligned)). */ 1226 #ifndef ATTRIBUTE_ALIGNED_VALUE 1227 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT 1228 #endif 1229 1230 /* Many ports have no mode-dependent addresses (except possibly autoincrement 1231 and autodecrement addresses, which are handled by target-independent code 1232 in recog.c). */ 1233 #ifndef GO_IF_MODE_DEPENDENT_ADDRESS 1234 #define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN) 1235 #endif 1236 1237 /* For most ports anything that evaluates to a constant symbolic 1238 or integer value is acceptable as a constant address. */ 1239 #ifndef CONSTANT_ADDRESS_P 1240 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE) 1241 #endif 1242 1243 #ifndef MAX_FIXED_MODE_SIZE 1244 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode) 1245 #endif 1246 1247 /* Nonzero if structures and unions should be returned in memory. 1248 1249 This should only be defined if compatibility with another compiler or 1250 with an ABI is needed, because it results in slower code. */ 1251 1252 #ifndef DEFAULT_PCC_STRUCT_RETURN 1253 #define DEFAULT_PCC_STRUCT_RETURN 1 1254 #endif 1255 1256 #ifdef GCC_INSN_FLAGS_H 1257 /* Dependent default target macro definitions 1258 1259 This section of defaults.h defines target macros that depend on generated 1260 headers. This is a bit awkward: We want to put all default definitions 1261 for target macros in defaults.h, but some of the defaults depend on the 1262 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always 1263 included by files that do include defaults.h. 1264 1265 Fortunately, the default macro definitions that depend on the HAVE_* 1266 macros are also the ones that will only be used inside GCC itself, i.e. 1267 not in the gen* programs or in target objects like libgcc. 1268 1269 Obviously, it would be best to keep this section of defaults.h as small 1270 as possible, by converting the macros defined below to target hooks or 1271 functions. 1272 */ 1273 1274 /* The default branch cost is 1. */ 1275 #ifndef BRANCH_COST 1276 #define BRANCH_COST(speed_p, predictable_p) 1 1277 #endif 1278 1279 /* If a memory-to-memory move would take MOVE_RATIO or more simple 1280 move-instruction sequences, we will do a movmem or libcall instead. */ 1281 1282 #ifndef MOVE_RATIO 1283 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti) 1284 #define MOVE_RATIO(speed) 2 1285 #else 1286 /* If we are optimizing for space (-Os), cut down the default move ratio. */ 1287 #define MOVE_RATIO(speed) ((speed) ? 15 : 3) 1288 #endif 1289 #endif 1290 1291 /* If a clear memory operation would take CLEAR_RATIO or more simple 1292 move-instruction sequences, we will do a setmem or libcall instead. */ 1293 1294 #ifndef CLEAR_RATIO 1295 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti) 1296 #define CLEAR_RATIO(speed) 2 1297 #else 1298 /* If we are optimizing for space, cut down the default clear ratio. */ 1299 #define CLEAR_RATIO(speed) ((speed) ? 15 :3) 1300 #endif 1301 #endif 1302 1303 /* If a memory set (to value other than zero) operation would take 1304 SET_RATIO or more simple move-instruction sequences, we will do a movmem 1305 or libcall instead. */ 1306 #ifndef SET_RATIO 1307 #define SET_RATIO(speed) MOVE_RATIO(speed) 1308 #endif 1309 1310 /* Supply a default definition for FUNCTION_ARG_PADDING: 1311 usually pad upward, but pad short args downward on 1312 big-endian machines. */ 1313 1314 #define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \ 1315 (! BYTES_BIG_ENDIAN \ 1316 ? upward \ 1317 : (((MODE) == BLKmode \ 1318 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ 1319 && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \ 1320 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \ 1321 ? downward : upward)) 1322 1323 #ifndef FUNCTION_ARG_PADDING 1324 #define FUNCTION_ARG_PADDING(MODE, TYPE) \ 1325 DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE)) 1326 #endif 1327 1328 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save. 1329 Normally move_insn, so Pmode stack pointer. */ 1330 1331 #ifndef STACK_SAVEAREA_MODE 1332 #define STACK_SAVEAREA_MODE(LEVEL) Pmode 1333 #endif 1334 1335 /* Supply a default definition of STACK_SIZE_MODE for 1336 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */ 1337 1338 #ifndef STACK_SIZE_MODE 1339 #define STACK_SIZE_MODE word_mode 1340 #endif 1341 1342 /* Provide default values for the macros controlling stack checking. */ 1343 1344 /* The default is neither full builtin stack checking... */ 1345 #ifndef STACK_CHECK_BUILTIN 1346 #define STACK_CHECK_BUILTIN 0 1347 #endif 1348 1349 /* ...nor static builtin stack checking. */ 1350 #ifndef STACK_CHECK_STATIC_BUILTIN 1351 #define STACK_CHECK_STATIC_BUILTIN 0 1352 #endif 1353 1354 /* The default interval is one page (4096 bytes). */ 1355 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP 1356 #define STACK_CHECK_PROBE_INTERVAL_EXP 12 1357 #endif 1358 1359 /* The default is not to move the stack pointer. */ 1360 #ifndef STACK_CHECK_MOVING_SP 1361 #define STACK_CHECK_MOVING_SP 0 1362 #endif 1363 1364 /* This is a kludge to try to capture the discrepancy between the old 1365 mechanism (generic stack checking) and the new mechanism (static 1366 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped 1367 for the latter because part of the protection area is effectively 1368 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */ 1369 #ifdef STACK_CHECK_PROTECT 1370 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT 1371 #else 1372 #define STACK_OLD_CHECK_PROTECT \ 1373 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1374 ? 75 * UNITS_PER_WORD \ 1375 : 8 * 1024) 1376 #endif 1377 1378 /* Minimum amount of stack required to recover from an anticipated stack 1379 overflow detection. The default value conveys an estimate of the amount 1380 of stack required to propagate an exception. */ 1381 #ifndef STACK_CHECK_PROTECT 1382 #define STACK_CHECK_PROTECT \ 1383 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1384 ? 75 * UNITS_PER_WORD \ 1385 : 12 * 1024) 1386 #endif 1387 1388 /* Make the maximum frame size be the largest we can and still only need 1389 one probe per function. */ 1390 #ifndef STACK_CHECK_MAX_FRAME_SIZE 1391 #define STACK_CHECK_MAX_FRAME_SIZE \ 1392 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD) 1393 #endif 1394 1395 /* This is arbitrary, but should be large enough everywhere. */ 1396 #ifndef STACK_CHECK_FIXED_FRAME_SIZE 1397 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) 1398 #endif 1399 1400 /* Provide a reasonable default for the maximum size of an object to 1401 allocate in the fixed frame. We may need to be able to make this 1402 controllable by the user at some point. */ 1403 #ifndef STACK_CHECK_MAX_VAR_SIZE 1404 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) 1405 #endif 1406 1407 /* By default, the C++ compiler will use function addresses in the 1408 vtable entries. Setting this nonzero tells the compiler to use 1409 function descriptors instead. The value of this macro says how 1410 many words wide the descriptor is (normally 2). It is assumed 1411 that the address of a function descriptor may be treated as a 1412 pointer to a function. */ 1413 #ifndef TARGET_VTABLE_USES_DESCRIPTORS 1414 #define TARGET_VTABLE_USES_DESCRIPTORS 0 1415 #endif 1416 1417 #ifndef SWITCHABLE_TARGET 1418 #define SWITCHABLE_TARGET 0 1419 #endif 1420 1421 #endif /* GCC_INSN_FLAGS_H */ 1422 1423 #endif /* ! GCC_DEFAULTS_H */ 1424