1 /* Definitions of various defaults for tm.h macros. 2 Copyright (C) 1992-2018 Free Software Foundation, Inc. 3 Contributed by Ron Guilmette (rfg@monkeys.com) 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 #ifndef GCC_DEFAULTS_H 27 #define GCC_DEFAULTS_H 28 29 /* How to start an assembler comment. */ 30 #ifndef ASM_COMMENT_START 31 #define ASM_COMMENT_START ";#" 32 #endif 33 34 /* Store in OUTPUT a string (made with alloca) containing an 35 assembler-name for a local static variable or function named NAME. 36 LABELNO is an integer which is different for each call. */ 37 38 #ifndef ASM_PN_FORMAT 39 # ifndef NO_DOT_IN_LABEL 40 # define ASM_PN_FORMAT "%s.%lu" 41 # else 42 # ifndef NO_DOLLAR_IN_LABEL 43 # define ASM_PN_FORMAT "%s$%lu" 44 # else 45 # define ASM_PN_FORMAT "__%s_%lu" 46 # endif 47 # endif 48 #endif /* ! ASM_PN_FORMAT */ 49 50 #ifndef ASM_FORMAT_PRIVATE_NAME 51 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ 52 do { const char *const name_ = (NAME); \ 53 char *const output_ = (OUTPUT) = \ 54 (char *) alloca (strlen (name_) + 32); \ 55 sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \ 56 } while (0) 57 #endif 58 59 /* Choose a reasonable default for ASM_OUTPUT_ASCII. */ 60 61 #ifndef ASM_OUTPUT_ASCII 62 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \ 63 do { \ 64 FILE *_hide_asm_out_file = (MYFILE); \ 65 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \ 66 int _hide_thissize = (MYLENGTH); \ 67 { \ 68 FILE *asm_out_file = _hide_asm_out_file; \ 69 const unsigned char *p = _hide_p; \ 70 int thissize = _hide_thissize; \ 71 int i; \ 72 fprintf (asm_out_file, "\t.ascii \""); \ 73 \ 74 for (i = 0; i < thissize; i++) \ 75 { \ 76 int c = p[i]; \ 77 if (c == '\"' || c == '\\') \ 78 putc ('\\', asm_out_file); \ 79 if (ISPRINT (c)) \ 80 putc (c, asm_out_file); \ 81 else \ 82 { \ 83 fprintf (asm_out_file, "\\%o", c); \ 84 /* After an octal-escape, if a digit follows, \ 85 terminate one string constant and start another. \ 86 The VAX assembler fails to stop reading the escape \ 87 after three digits, so this is the only way we \ 88 can get it to parse the data properly. */ \ 89 if (i < thissize - 1 && ISDIGIT (p[i + 1])) \ 90 fprintf (asm_out_file, "\"\n\t.ascii \""); \ 91 } \ 92 } \ 93 fprintf (asm_out_file, "\"\n"); \ 94 } \ 95 } \ 96 while (0) 97 #endif 98 99 /* This is how we tell the assembler to equate two values. */ 100 #ifdef SET_ASM_OP 101 #ifndef ASM_OUTPUT_DEF 102 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 103 do { fprintf ((FILE), "%s", SET_ASM_OP); \ 104 assemble_name (FILE, LABEL1); \ 105 fprintf (FILE, ","); \ 106 assemble_name (FILE, LABEL2); \ 107 fprintf (FILE, "\n"); \ 108 } while (0) 109 #endif 110 #endif 111 112 #ifndef IFUNC_ASM_TYPE 113 #define IFUNC_ASM_TYPE "gnu_indirect_function" 114 #endif 115 116 #ifndef TLS_COMMON_ASM_OP 117 #define TLS_COMMON_ASM_OP ".tls_common" 118 #endif 119 120 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON) 121 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \ 122 do \ 123 { \ 124 fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \ 125 assemble_name ((FILE), (NAME)); \ 126 fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \ 127 (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \ 128 } \ 129 while (0) 130 #endif 131 132 /* Decide whether to defer emitting the assembler output for an equate 133 of two values. The default is to not defer output. */ 134 #ifndef TARGET_DEFERRED_OUTPUT_DEFS 135 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false 136 #endif 137 138 /* This is how to output the definition of a user-level label named 139 NAME, such as the label on variable NAME. */ 140 141 #ifndef ASM_OUTPUT_LABEL 142 #define ASM_OUTPUT_LABEL(FILE,NAME) \ 143 do { \ 144 assemble_name ((FILE), (NAME)); \ 145 fputs (":\n", (FILE)); \ 146 } while (0) 147 #endif 148 149 /* This is how to output the definition of a user-level label named 150 NAME, such as the label on a function. */ 151 152 #ifndef ASM_OUTPUT_FUNCTION_LABEL 153 #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \ 154 ASM_OUTPUT_LABEL ((FILE), (NAME)) 155 #endif 156 157 /* Output the definition of a compiler-generated label named NAME. */ 158 #ifndef ASM_OUTPUT_INTERNAL_LABEL 159 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \ 160 do { \ 161 assemble_name_raw ((FILE), (NAME)); \ 162 fputs (":\n", (FILE)); \ 163 } while (0) 164 #endif 165 166 /* This is how to output a reference to a user-level label named NAME. */ 167 168 #ifndef ASM_OUTPUT_LABELREF 169 #define ASM_OUTPUT_LABELREF(FILE,NAME) \ 170 do { \ 171 fputs (user_label_prefix, (FILE)); \ 172 fputs ((NAME), (FILE)); \ 173 } while (0) 174 #endif 175 176 /* Allow target to print debug info labels specially. This is useful for 177 VLIW targets, since debug info labels should go into the middle of 178 instruction bundles instead of breaking them. */ 179 180 #ifndef ASM_OUTPUT_DEBUG_LABEL 181 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ 182 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM) 183 #endif 184 185 /* This is how we tell the assembler that a symbol is weak. */ 186 #ifndef ASM_OUTPUT_WEAK_ALIAS 187 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF) 188 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \ 189 do \ 190 { \ 191 ASM_WEAKEN_LABEL (STREAM, NAME); \ 192 if (VALUE) \ 193 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \ 194 } \ 195 while (0) 196 #endif 197 #endif 198 199 /* This is how we tell the assembler that a symbol is a weak alias to 200 another symbol that doesn't require the other symbol to be defined. 201 Uses of the former will turn into weak uses of the latter, i.e., 202 uses that, in case the latter is undefined, will not cause errors, 203 and will add it to the symbol table as weak undefined. However, if 204 the latter is referenced directly, a strong reference prevails. */ 205 #ifndef ASM_OUTPUT_WEAKREF 206 #if defined HAVE_GAS_WEAKREF 207 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \ 208 do \ 209 { \ 210 fprintf ((FILE), "\t.weakref\t"); \ 211 assemble_name ((FILE), (NAME)); \ 212 fprintf ((FILE), ","); \ 213 assemble_name ((FILE), (VALUE)); \ 214 fprintf ((FILE), "\n"); \ 215 } \ 216 while (0) 217 #endif 218 #endif 219 220 /* How to emit a .type directive. */ 221 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE 222 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT 223 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \ 224 do \ 225 { \ 226 fputs (TYPE_ASM_OP, STREAM); \ 227 assemble_name (STREAM, NAME); \ 228 fputs (", ", STREAM); \ 229 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \ 230 putc ('\n', STREAM); \ 231 } \ 232 while (0) 233 #endif 234 #endif 235 236 /* How to emit a .size directive. */ 237 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE 238 #ifdef SIZE_ASM_OP 239 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \ 240 do \ 241 { \ 242 HOST_WIDE_INT size_ = (SIZE); \ 243 fputs (SIZE_ASM_OP, STREAM); \ 244 assemble_name (STREAM, NAME); \ 245 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \ 246 } \ 247 while (0) 248 249 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \ 250 do \ 251 { \ 252 fputs (SIZE_ASM_OP, STREAM); \ 253 assemble_name (STREAM, NAME); \ 254 fputs (", .-", STREAM); \ 255 assemble_name (STREAM, NAME); \ 256 putc ('\n', STREAM); \ 257 } \ 258 while (0) 259 260 #endif 261 #endif 262 263 /* This determines whether or not we support weak symbols. SUPPORTS_WEAK 264 must be a preprocessor constant. */ 265 #ifndef SUPPORTS_WEAK 266 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL) 267 #define SUPPORTS_WEAK 1 268 #else 269 #define SUPPORTS_WEAK 0 270 #endif 271 #endif 272 273 /* This determines whether or not we support weak symbols during target 274 code generation. TARGET_SUPPORTS_WEAK can be any valid C expression. */ 275 #ifndef TARGET_SUPPORTS_WEAK 276 #define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK) 277 #endif 278 279 /* This determines whether or not we support the discriminator 280 attribute in the .loc directive. */ 281 #ifndef SUPPORTS_DISCRIMINATOR 282 #ifdef HAVE_GAS_DISCRIMINATOR 283 #define SUPPORTS_DISCRIMINATOR 1 284 #else 285 #define SUPPORTS_DISCRIMINATOR 0 286 #endif 287 #endif 288 289 /* This determines whether or not we support link-once semantics. */ 290 #ifndef SUPPORTS_ONE_ONLY 291 #ifdef MAKE_DECL_ONE_ONLY 292 #define SUPPORTS_ONE_ONLY 1 293 #else 294 #define SUPPORTS_ONE_ONLY 0 295 #endif 296 #endif 297 298 /* This determines whether weak symbols must be left out of a static 299 archive's table of contents. Defining this macro to be nonzero has 300 the consequence that certain symbols will not be made weak that 301 otherwise would be. The C++ ABI requires this macro to be zero; 302 see the documentation. */ 303 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC 304 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0 305 #endif 306 307 /* This determines whether or not we need linkonce unwind information. */ 308 #ifndef TARGET_USES_WEAK_UNWIND_INFO 309 #define TARGET_USES_WEAK_UNWIND_INFO 0 310 #endif 311 312 /* By default, there is no prefix on user-defined symbols. */ 313 #ifndef USER_LABEL_PREFIX 314 #define USER_LABEL_PREFIX "" 315 #endif 316 317 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to 318 provide a weak attribute. Else define it to nothing. 319 320 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is 321 not available at that time. 322 323 Note, this is only for use by target files which we know are to be 324 compiled by GCC. */ 325 #ifndef TARGET_ATTRIBUTE_WEAK 326 # if SUPPORTS_WEAK 327 # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak)) 328 # else 329 # define TARGET_ATTRIBUTE_WEAK 330 # endif 331 #endif 332 333 /* By default we can assume that all global symbols are in one namespace, 334 across all shared libraries. */ 335 #ifndef MULTIPLE_SYMBOL_SPACES 336 # define MULTIPLE_SYMBOL_SPACES 0 337 #endif 338 339 /* If the target supports init_priority C++ attribute, give 340 SUPPORTS_INIT_PRIORITY a nonzero value. */ 341 #ifndef SUPPORTS_INIT_PRIORITY 342 #define SUPPORTS_INIT_PRIORITY 1 343 #endif /* SUPPORTS_INIT_PRIORITY */ 344 345 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that 346 the rest of the DWARF 2 frame unwind support is also provided. */ 347 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) 348 #define DWARF2_UNWIND_INFO 1 349 #endif 350 351 /* If we have named sections, and we're using crtstuff to run ctors, 352 use them for registering eh frame information. */ 353 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \ 354 && !defined (EH_FRAME_THROUGH_COLLECT2) 355 #ifndef EH_FRAME_SECTION_NAME 356 #define EH_FRAME_SECTION_NAME ".eh_frame" 357 #endif 358 #endif 359 360 /* On many systems, different EH table encodings are used under 361 difference circumstances. Some will require runtime relocations; 362 some will not. For those that do not require runtime relocations, 363 we would like to make the table read-only. However, since the 364 read-only tables may need to be combined with read-write tables 365 that do require runtime relocation, it is not safe to make the 366 tables read-only unless the linker will merge read-only and 367 read-write sections into a single read-write section. If your 368 linker does not have this ability, but your system is such that no 369 encoding used with non-PIC code will ever require a runtime 370 relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in 371 your target configuration file. */ 372 #ifndef EH_TABLES_CAN_BE_READ_ONLY 373 #ifdef HAVE_LD_RO_RW_SECTION_MIXING 374 #define EH_TABLES_CAN_BE_READ_ONLY 1 375 #else 376 #define EH_TABLES_CAN_BE_READ_ONLY 0 377 #endif 378 #endif 379 380 /* Provide defaults for stuff that may not be defined when using 381 sjlj exceptions. */ 382 #ifndef EH_RETURN_DATA_REGNO 383 #define EH_RETURN_DATA_REGNO(N) INVALID_REGNUM 384 #endif 385 386 /* Offset between the eh handler address and entry in eh tables. */ 387 #ifndef RETURN_ADDR_OFFSET 388 #define RETURN_ADDR_OFFSET 0 389 #endif 390 391 #ifndef MASK_RETURN_ADDR 392 #define MASK_RETURN_ADDR NULL_RTX 393 #endif 394 395 /* Number of hardware registers that go into the DWARF-2 unwind info. 396 If not defined, equals FIRST_PSEUDO_REGISTER */ 397 398 #ifndef DWARF_FRAME_REGISTERS 399 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER 400 #endif 401 402 /* Offsets recorded in opcodes are a multiple of this alignment factor. */ 403 #ifndef DWARF_CIE_DATA_ALIGNMENT 404 #ifdef STACK_GROWS_DOWNWARD 405 #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) 406 #else 407 #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) 408 #endif 409 #endif 410 411 /* The DWARF 2 CFA column which tracks the return address. Normally this 412 is the column for PC, or the first column after all of the hard 413 registers. */ 414 #ifndef DWARF_FRAME_RETURN_COLUMN 415 #ifdef PC_REGNUM 416 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) 417 #else 418 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS 419 #endif 420 #endif 421 422 /* How to renumber registers for dbx and gdb. If not defined, assume 423 no renumbering is necessary. */ 424 425 #ifndef DBX_REGISTER_NUMBER 426 #define DBX_REGISTER_NUMBER(REGNO) (REGNO) 427 #endif 428 429 /* The mapping from gcc register number to DWARF 2 CFA column number. 430 By default, we just provide columns for all registers. */ 431 #ifndef DWARF_FRAME_REGNUM 432 #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) 433 #endif 434 435 /* The mapping from dwarf CFA reg number to internal dwarf reg numbers. */ 436 #ifndef DWARF_REG_TO_UNWIND_COLUMN 437 #define DWARF_REG_TO_UNWIND_COLUMN(REGNO) (REGNO) 438 #endif 439 440 /* Map register numbers held in the call frame info that gcc has 441 collected using DWARF_FRAME_REGNUM to those that should be output in 442 .debug_frame and .eh_frame. */ 443 #ifndef DWARF2_FRAME_REG_OUT 444 #define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO) 445 #endif 446 447 /* The size of addresses as they appear in the Dwarf 2 data. 448 Some architectures use word addresses to refer to code locations, 449 but Dwarf 2 info always uses byte addresses. On such machines, 450 Dwarf 2 addresses need to be larger than the architecture's 451 pointers. */ 452 #ifndef DWARF2_ADDR_SIZE 453 #define DWARF2_ADDR_SIZE ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT) 454 #endif 455 456 /* The size in bytes of a DWARF field indicating an offset or length 457 relative to a debug info section, specified to be 4 bytes in the 458 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same 459 as PTR_SIZE. */ 460 #ifndef DWARF_OFFSET_SIZE 461 #define DWARF_OFFSET_SIZE 4 462 #endif 463 464 /* The size in bytes of a DWARF 4 type signature. */ 465 #ifndef DWARF_TYPE_SIGNATURE_SIZE 466 #define DWARF_TYPE_SIGNATURE_SIZE 8 467 #endif 468 469 /* Default sizes for base C types. If the sizes are different for 470 your target, you should override these values by defining the 471 appropriate symbols in your tm.h file. */ 472 473 #ifndef BITS_PER_WORD 474 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD) 475 #endif 476 477 #ifndef CHAR_TYPE_SIZE 478 #define CHAR_TYPE_SIZE BITS_PER_UNIT 479 #endif 480 481 #ifndef BOOL_TYPE_SIZE 482 /* `bool' has size and alignment `1', on almost all platforms. */ 483 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE 484 #endif 485 486 #ifndef SHORT_TYPE_SIZE 487 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) 488 #endif 489 490 #ifndef INT_TYPE_SIZE 491 #define INT_TYPE_SIZE BITS_PER_WORD 492 #endif 493 494 #ifndef LONG_TYPE_SIZE 495 #define LONG_TYPE_SIZE BITS_PER_WORD 496 #endif 497 498 #ifndef LONG_LONG_TYPE_SIZE 499 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) 500 #endif 501 502 #ifndef WCHAR_TYPE_SIZE 503 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE 504 #endif 505 506 #ifndef FLOAT_TYPE_SIZE 507 #define FLOAT_TYPE_SIZE BITS_PER_WORD 508 #endif 509 510 #ifndef DOUBLE_TYPE_SIZE 511 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) 512 #endif 513 514 #ifndef LONG_DOUBLE_TYPE_SIZE 515 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) 516 #endif 517 518 #ifndef DECIMAL32_TYPE_SIZE 519 #define DECIMAL32_TYPE_SIZE 32 520 #endif 521 522 #ifndef DECIMAL64_TYPE_SIZE 523 #define DECIMAL64_TYPE_SIZE 64 524 #endif 525 526 #ifndef DECIMAL128_TYPE_SIZE 527 #define DECIMAL128_TYPE_SIZE 128 528 #endif 529 530 #ifndef SHORT_FRACT_TYPE_SIZE 531 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT 532 #endif 533 534 #ifndef FRACT_TYPE_SIZE 535 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2) 536 #endif 537 538 #ifndef LONG_FRACT_TYPE_SIZE 539 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4) 540 #endif 541 542 #ifndef LONG_LONG_FRACT_TYPE_SIZE 543 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8) 544 #endif 545 546 #ifndef SHORT_ACCUM_TYPE_SIZE 547 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2) 548 #endif 549 550 #ifndef ACCUM_TYPE_SIZE 551 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2) 552 #endif 553 554 #ifndef LONG_ACCUM_TYPE_SIZE 555 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2) 556 #endif 557 558 #ifndef LONG_LONG_ACCUM_TYPE_SIZE 559 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2) 560 #endif 561 562 /* We let tm.h override the types used here, to handle trivial differences 563 such as the choice of unsigned int or long unsigned int for size_t. 564 When machines start needing nontrivial differences in the size type, 565 it would be best to do something here to figure out automatically 566 from other information what type to use. */ 567 568 #ifndef SIZE_TYPE 569 #define SIZE_TYPE "long unsigned int" 570 #endif 571 572 #ifndef SIZETYPE 573 #define SIZETYPE SIZE_TYPE 574 #endif 575 576 #ifndef PID_TYPE 577 #define PID_TYPE "int" 578 #endif 579 580 /* If GCC knows the exact uint_least16_t and uint_least32_t types from 581 <stdint.h>, use them for char16_t and char32_t. Otherwise, use 582 these guesses; getting the wrong type of a given width will not 583 affect C++ name mangling because in C++ these are distinct types 584 not typedefs. */ 585 586 #ifdef UINT_LEAST16_TYPE 587 #define CHAR16_TYPE UINT_LEAST16_TYPE 588 #else 589 #define CHAR16_TYPE "short unsigned int" 590 #endif 591 592 #ifdef UINT_LEAST32_TYPE 593 #define CHAR32_TYPE UINT_LEAST32_TYPE 594 #else 595 #define CHAR32_TYPE "unsigned int" 596 #endif 597 598 #ifndef WCHAR_TYPE 599 #define WCHAR_TYPE "int" 600 #endif 601 602 /* WCHAR_TYPE gets overridden by -fshort-wchar. */ 603 #define MODIFIED_WCHAR_TYPE \ 604 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE) 605 606 #ifndef PTRDIFF_TYPE 607 #define PTRDIFF_TYPE "long int" 608 #endif 609 610 #ifndef WINT_TYPE 611 #define WINT_TYPE "unsigned int" 612 #endif 613 614 #ifndef INTMAX_TYPE 615 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 616 ? "int" \ 617 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 618 ? "long int" \ 619 : "long long int")) 620 #endif 621 622 #ifndef UINTMAX_TYPE 623 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 624 ? "unsigned int" \ 625 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 626 ? "long unsigned int" \ 627 : "long long unsigned int")) 628 #endif 629 630 631 /* There are no default definitions of these <stdint.h> types. */ 632 633 #ifndef SIG_ATOMIC_TYPE 634 #define SIG_ATOMIC_TYPE ((const char *) NULL) 635 #endif 636 637 #ifndef INT8_TYPE 638 #define INT8_TYPE ((const char *) NULL) 639 #endif 640 641 #ifndef INT16_TYPE 642 #define INT16_TYPE ((const char *) NULL) 643 #endif 644 645 #ifndef INT32_TYPE 646 #define INT32_TYPE ((const char *) NULL) 647 #endif 648 649 #ifndef INT64_TYPE 650 #define INT64_TYPE ((const char *) NULL) 651 #endif 652 653 #ifndef UINT8_TYPE 654 #define UINT8_TYPE ((const char *) NULL) 655 #endif 656 657 #ifndef UINT16_TYPE 658 #define UINT16_TYPE ((const char *) NULL) 659 #endif 660 661 #ifndef UINT32_TYPE 662 #define UINT32_TYPE ((const char *) NULL) 663 #endif 664 665 #ifndef UINT64_TYPE 666 #define UINT64_TYPE ((const char *) NULL) 667 #endif 668 669 #ifndef INT_LEAST8_TYPE 670 #define INT_LEAST8_TYPE ((const char *) NULL) 671 #endif 672 673 #ifndef INT_LEAST16_TYPE 674 #define INT_LEAST16_TYPE ((const char *) NULL) 675 #endif 676 677 #ifndef INT_LEAST32_TYPE 678 #define INT_LEAST32_TYPE ((const char *) NULL) 679 #endif 680 681 #ifndef INT_LEAST64_TYPE 682 #define INT_LEAST64_TYPE ((const char *) NULL) 683 #endif 684 685 #ifndef UINT_LEAST8_TYPE 686 #define UINT_LEAST8_TYPE ((const char *) NULL) 687 #endif 688 689 #ifndef UINT_LEAST16_TYPE 690 #define UINT_LEAST16_TYPE ((const char *) NULL) 691 #endif 692 693 #ifndef UINT_LEAST32_TYPE 694 #define UINT_LEAST32_TYPE ((const char *) NULL) 695 #endif 696 697 #ifndef UINT_LEAST64_TYPE 698 #define UINT_LEAST64_TYPE ((const char *) NULL) 699 #endif 700 701 #ifndef INT_FAST8_TYPE 702 #define INT_FAST8_TYPE ((const char *) NULL) 703 #endif 704 705 #ifndef INT_FAST16_TYPE 706 #define INT_FAST16_TYPE ((const char *) NULL) 707 #endif 708 709 #ifndef INT_FAST32_TYPE 710 #define INT_FAST32_TYPE ((const char *) NULL) 711 #endif 712 713 #ifndef INT_FAST64_TYPE 714 #define INT_FAST64_TYPE ((const char *) NULL) 715 #endif 716 717 #ifndef UINT_FAST8_TYPE 718 #define UINT_FAST8_TYPE ((const char *) NULL) 719 #endif 720 721 #ifndef UINT_FAST16_TYPE 722 #define UINT_FAST16_TYPE ((const char *) NULL) 723 #endif 724 725 #ifndef UINT_FAST32_TYPE 726 #define UINT_FAST32_TYPE ((const char *) NULL) 727 #endif 728 729 #ifndef UINT_FAST64_TYPE 730 #define UINT_FAST64_TYPE ((const char *) NULL) 731 #endif 732 733 #ifndef INTPTR_TYPE 734 #define INTPTR_TYPE ((const char *) NULL) 735 #endif 736 737 #ifndef UINTPTR_TYPE 738 #define UINTPTR_TYPE ((const char *) NULL) 739 #endif 740 741 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ 742 #ifndef POINTER_SIZE 743 #define POINTER_SIZE BITS_PER_WORD 744 #endif 745 #ifndef POINTER_SIZE_UNITS 746 #define POINTER_SIZE_UNITS ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT) 747 #endif 748 749 750 #ifndef PIC_OFFSET_TABLE_REGNUM 751 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM 752 #endif 753 754 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 755 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0 756 #endif 757 758 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES 759 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 760 #endif 761 762 #ifndef TARGET_DECLSPEC 763 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES 764 /* If the target supports the "dllimport" attribute, users are 765 probably used to the "__declspec" syntax. */ 766 #define TARGET_DECLSPEC 1 767 #else 768 #define TARGET_DECLSPEC 0 769 #endif 770 #endif 771 772 /* By default, the preprocessor should be invoked the same way in C++ 773 as in C. */ 774 #ifndef CPLUSPLUS_CPP_SPEC 775 #ifdef CPP_SPEC 776 #define CPLUSPLUS_CPP_SPEC CPP_SPEC 777 #endif 778 #endif 779 780 #ifndef ACCUMULATE_OUTGOING_ARGS 781 #define ACCUMULATE_OUTGOING_ARGS 0 782 #endif 783 784 /* By default, use the GNU runtime for Objective C. */ 785 #ifndef NEXT_OBJC_RUNTIME 786 #define NEXT_OBJC_RUNTIME 0 787 #endif 788 789 /* Supply a default definition for PUSH_ARGS. */ 790 #ifndef PUSH_ARGS 791 #ifdef PUSH_ROUNDING 792 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS 793 #else 794 #define PUSH_ARGS 0 795 #endif 796 #endif 797 798 /* Decide whether a function's arguments should be processed 799 from first to last or from last to first. 800 801 They should if the stack and args grow in opposite directions, but 802 only if we have push insns. */ 803 804 #ifdef PUSH_ROUNDING 805 806 #ifndef PUSH_ARGS_REVERSED 807 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) 808 #define PUSH_ARGS_REVERSED PUSH_ARGS 809 #endif 810 #endif 811 812 #endif 813 814 #ifndef PUSH_ARGS_REVERSED 815 #define PUSH_ARGS_REVERSED 0 816 #endif 817 818 /* Default value for the alignment (in bits) a C conformant malloc has to 819 provide. This default is intended to be safe and always correct. */ 820 #ifndef MALLOC_ABI_ALIGNMENT 821 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD 822 #endif 823 824 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. 825 STACK_BOUNDARY is required. */ 826 #ifndef PREFERRED_STACK_BOUNDARY 827 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY 828 #endif 829 830 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not 831 defined. */ 832 #ifndef INCOMING_STACK_BOUNDARY 833 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY 834 #endif 835 836 #ifndef TARGET_DEFAULT_PACK_STRUCT 837 #define TARGET_DEFAULT_PACK_STRUCT 0 838 #endif 839 840 /* By default, the vtable entries are void pointers, the so the alignment 841 is the same as pointer alignment. The value of this macro specifies 842 the alignment of the vtable entry in bits. It should be defined only 843 when special alignment is necessary. */ 844 #ifndef TARGET_VTABLE_ENTRY_ALIGN 845 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE 846 #endif 847 848 /* There are a few non-descriptor entries in the vtable at offsets below 849 zero. If these entries must be padded (say, to preserve the alignment 850 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of 851 words in each data entry. */ 852 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE 853 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 854 #endif 855 856 /* Decide whether it is safe to use a local alias for a virtual function 857 when constructing thunks. */ 858 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P 859 #ifdef ASM_OUTPUT_DEF 860 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 861 #else 862 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 863 #endif 864 #endif 865 866 /* Decide whether target supports aliases. */ 867 #ifndef TARGET_SUPPORTS_ALIASES 868 #ifdef ASM_OUTPUT_DEF 869 #define TARGET_SUPPORTS_ALIASES 1 870 #else 871 #define TARGET_SUPPORTS_ALIASES 0 872 #endif 873 #endif 874 875 /* Select a format to encode pointers in exception handling data. We 876 prefer those that result in fewer dynamic relocations. Assume no 877 special support here and encode direct references. */ 878 #ifndef ASM_PREFERRED_EH_DATA_FORMAT 879 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr 880 #endif 881 882 /* By default, the C++ compiler will use the lowest bit of the pointer 883 to function to indicate a pointer-to-member-function points to a 884 virtual member function. However, if FUNCTION_BOUNDARY indicates 885 function addresses aren't always even, the lowest bit of the delta 886 field will be used. */ 887 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION 888 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ 889 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ 890 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) 891 #endif 892 893 #ifndef DEFAULT_GDB_EXTENSIONS 894 #define DEFAULT_GDB_EXTENSIONS 1 895 #endif 896 897 /* If more than one debugging type is supported, you must define 898 PREFERRED_DEBUGGING_TYPE to choose the default. */ 899 900 #if 1 < (defined (DBX_DEBUGGING_INFO) \ 901 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ 902 + defined (VMS_DEBUGGING_INFO)) 903 #ifndef PREFERRED_DEBUGGING_TYPE 904 #error You must define PREFERRED_DEBUGGING_TYPE 905 #endif /* no PREFERRED_DEBUGGING_TYPE */ 906 907 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE 908 here so other code needn't care. */ 909 #elif defined DBX_DEBUGGING_INFO 910 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 911 912 #elif defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO 913 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 914 915 #elif defined VMS_DEBUGGING_INFO 916 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG 917 918 #elif defined XCOFF_DEBUGGING_INFO 919 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG 920 921 #else 922 /* No debugging format is supported by this target. */ 923 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG 924 #endif 925 926 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL 927 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false 928 #endif 929 930 /* True if the targets integer-comparison functions return { 0, 1, 2 931 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used 932 instead. The libgcc routines are biased. */ 933 #ifndef TARGET_LIB_INT_CMP_BIASED 934 #define TARGET_LIB_INT_CMP_BIASED (true) 935 #endif 936 937 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, 938 then the word-endianness is the same as for integers. */ 939 #ifndef FLOAT_WORDS_BIG_ENDIAN 940 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 941 #endif 942 943 #ifndef REG_WORDS_BIG_ENDIAN 944 #define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 945 #endif 946 947 948 #ifndef TARGET_DEC_EVAL_METHOD 949 #define TARGET_DEC_EVAL_METHOD 2 950 #endif 951 952 #ifndef HAS_LONG_COND_BRANCH 953 #define HAS_LONG_COND_BRANCH 0 954 #endif 955 956 #ifndef HAS_LONG_UNCOND_BRANCH 957 #define HAS_LONG_UNCOND_BRANCH 0 958 #endif 959 960 /* Determine whether __cxa_atexit, rather than atexit, is used to 961 register C++ destructors for local statics and global objects. */ 962 #ifndef DEFAULT_USE_CXA_ATEXIT 963 #define DEFAULT_USE_CXA_ATEXIT 0 964 #endif 965 966 #if GCC_VERSION >= 3000 && defined IN_GCC 967 /* These old constraint macros shouldn't appear anywhere in a 968 configuration using MD constraint definitions. */ 969 #endif 970 971 /* Determin whether the target runtime library is Bionic */ 972 #ifndef TARGET_HAS_BIONIC 973 #define TARGET_HAS_BIONIC 0 974 #endif 975 976 /* Indicate that CLZ and CTZ are undefined at zero. */ 977 #ifndef CLZ_DEFINED_VALUE_AT_ZERO 978 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 979 #endif 980 #ifndef CTZ_DEFINED_VALUE_AT_ZERO 981 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 982 #endif 983 984 /* Provide a default value for STORE_FLAG_VALUE. */ 985 #ifndef STORE_FLAG_VALUE 986 #define STORE_FLAG_VALUE 1 987 #endif 988 989 /* This macro is used to determine what the largest unit size that 990 move_by_pieces can use is. */ 991 992 /* MOVE_MAX_PIECES is the number of bytes at a time which we can 993 move efficiently, as opposed to MOVE_MAX which is the maximum 994 number of bytes we can move with a single instruction. */ 995 996 #ifndef MOVE_MAX_PIECES 997 #define MOVE_MAX_PIECES MOVE_MAX 998 #endif 999 1000 /* STORE_MAX_PIECES is the number of bytes at a time that we can 1001 store efficiently. Due to internal GCC limitations, this is 1002 MOVE_MAX_PIECES limited by the number of bytes GCC can represent 1003 for an immediate constant. */ 1004 1005 #ifndef STORE_MAX_PIECES 1006 #define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT)) 1007 #endif 1008 1009 /* Likewise for block comparisons. */ 1010 #ifndef COMPARE_MAX_PIECES 1011 #define COMPARE_MAX_PIECES MOVE_MAX_PIECES 1012 #endif 1013 1014 #ifndef MAX_MOVE_MAX 1015 #define MAX_MOVE_MAX MOVE_MAX 1016 #endif 1017 1018 #ifndef MIN_UNITS_PER_WORD 1019 #define MIN_UNITS_PER_WORD UNITS_PER_WORD 1020 #endif 1021 1022 #ifndef MAX_BITS_PER_WORD 1023 #define MAX_BITS_PER_WORD BITS_PER_WORD 1024 #endif 1025 1026 #ifndef STACK_POINTER_OFFSET 1027 #define STACK_POINTER_OFFSET 0 1028 #endif 1029 1030 #ifndef LOCAL_REGNO 1031 #define LOCAL_REGNO(REGNO) 0 1032 #endif 1033 1034 #ifndef HONOR_REG_ALLOC_ORDER 1035 #define HONOR_REG_ALLOC_ORDER 0 1036 #endif 1037 1038 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, 1039 the stack pointer does not matter. The value is tested only in 1040 functions that have frame pointers. */ 1041 #ifndef EXIT_IGNORE_STACK 1042 #define EXIT_IGNORE_STACK 0 1043 #endif 1044 1045 /* Assume that case vectors are not pc-relative. */ 1046 #ifndef CASE_VECTOR_PC_RELATIVE 1047 #define CASE_VECTOR_PC_RELATIVE 0 1048 #endif 1049 1050 /* Force minimum alignment to be able to use the least significant bits 1051 for distinguishing descriptor addresses from code addresses. */ 1052 #define FUNCTION_ALIGNMENT(ALIGN) \ 1053 (lang_hooks.custom_function_descriptors \ 1054 && targetm.calls.custom_function_descriptors > 0 \ 1055 ? MAX ((ALIGN), \ 1056 2 * targetm.calls.custom_function_descriptors * BITS_PER_UNIT)\ 1057 : (ALIGN)) 1058 1059 /* Assume that trampolines need function alignment. */ 1060 #ifndef TRAMPOLINE_ALIGNMENT 1061 #define TRAMPOLINE_ALIGNMENT FUNCTION_ALIGNMENT (FUNCTION_BOUNDARY) 1062 #endif 1063 1064 /* Register mappings for target machines without register windows. */ 1065 #ifndef INCOMING_REGNO 1066 #define INCOMING_REGNO(N) (N) 1067 #endif 1068 1069 #ifndef OUTGOING_REGNO 1070 #define OUTGOING_REGNO(N) (N) 1071 #endif 1072 1073 #ifndef SHIFT_COUNT_TRUNCATED 1074 #define SHIFT_COUNT_TRUNCATED 0 1075 #endif 1076 1077 #ifndef LEGITIMATE_PIC_OPERAND_P 1078 #define LEGITIMATE_PIC_OPERAND_P(X) 1 1079 #endif 1080 1081 #ifndef TARGET_MEM_CONSTRAINT 1082 #define TARGET_MEM_CONSTRAINT 'm' 1083 #endif 1084 1085 #ifndef REVERSIBLE_CC_MODE 1086 #define REVERSIBLE_CC_MODE(MODE) 0 1087 #endif 1088 1089 /* Biggest alignment supported by the object file format of this machine. */ 1090 #ifndef MAX_OFILE_ALIGNMENT 1091 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT 1092 #endif 1093 1094 #ifndef FRAME_GROWS_DOWNWARD 1095 #define FRAME_GROWS_DOWNWARD 0 1096 #endif 1097 1098 #ifndef RETURN_ADDR_IN_PREVIOUS_FRAME 1099 #define RETURN_ADDR_IN_PREVIOUS_FRAME 0 1100 #endif 1101 1102 /* On most machines, the CFA coincides with the first incoming parm. */ 1103 #ifndef ARG_POINTER_CFA_OFFSET 1104 #define ARG_POINTER_CFA_OFFSET(FNDECL) \ 1105 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size) 1106 #endif 1107 1108 /* On most machines, we use the CFA as DW_AT_frame_base. */ 1109 #ifndef CFA_FRAME_BASE_OFFSET 1110 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0 1111 #endif 1112 1113 /* The offset from the incoming value of %sp to the top of the stack frame 1114 for the current function. */ 1115 #ifndef INCOMING_FRAME_SP_OFFSET 1116 #define INCOMING_FRAME_SP_OFFSET 0 1117 #endif 1118 1119 #ifndef HARD_REGNO_NREGS_HAS_PADDING 1120 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0 1121 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1 1122 #endif 1123 1124 #ifndef OUTGOING_REG_PARM_STACK_SPACE 1125 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0 1126 #endif 1127 1128 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by 1129 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best 1130 effort stack alignment supported by the backend. If the backend 1131 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and 1132 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack 1133 boundary will limit the maximum guaranteed stack alignment. */ 1134 #ifdef MAX_STACK_ALIGNMENT 1135 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT 1136 #else 1137 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY 1138 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY 1139 #endif 1140 1141 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY) 1142 1143 #ifndef LOCAL_ALIGNMENT 1144 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT 1145 #endif 1146 1147 #ifndef STACK_SLOT_ALIGNMENT 1148 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \ 1149 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN)) 1150 #endif 1151 1152 #ifndef LOCAL_DECL_ALIGNMENT 1153 #define LOCAL_DECL_ALIGNMENT(DECL) \ 1154 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL)) 1155 #endif 1156 1157 #ifndef MINIMUM_ALIGNMENT 1158 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN) 1159 #endif 1160 1161 /* Alignment value for attribute ((aligned)). */ 1162 #ifndef ATTRIBUTE_ALIGNED_VALUE 1163 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT 1164 #endif 1165 1166 /* For most ports anything that evaluates to a constant symbolic 1167 or integer value is acceptable as a constant address. */ 1168 #ifndef CONSTANT_ADDRESS_P 1169 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE) 1170 #endif 1171 1172 #ifndef MAX_FIXED_MODE_SIZE 1173 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode) 1174 #endif 1175 1176 /* Nonzero if structures and unions should be returned in memory. 1177 1178 This should only be defined if compatibility with another compiler or 1179 with an ABI is needed, because it results in slower code. */ 1180 1181 #ifndef DEFAULT_PCC_STRUCT_RETURN 1182 #define DEFAULT_PCC_STRUCT_RETURN 1 1183 #endif 1184 1185 #ifndef PCC_BITFIELD_TYPE_MATTERS 1186 #define PCC_BITFIELD_TYPE_MATTERS false 1187 #endif 1188 1189 #ifndef INSN_SETS_ARE_DELAYED 1190 #define INSN_SETS_ARE_DELAYED(INSN) false 1191 #endif 1192 1193 #ifndef INSN_REFERENCES_ARE_DELAYED 1194 #define INSN_REFERENCES_ARE_DELAYED(INSN) false 1195 #endif 1196 1197 #ifndef NO_FUNCTION_CSE 1198 #define NO_FUNCTION_CSE false 1199 #endif 1200 1201 #ifndef HARD_REGNO_RENAME_OK 1202 #define HARD_REGNO_RENAME_OK(FROM, TO) true 1203 #endif 1204 1205 #ifndef EPILOGUE_USES 1206 #define EPILOGUE_USES(REG) false 1207 #endif 1208 1209 #ifndef ARGS_GROW_DOWNWARD 1210 #define ARGS_GROW_DOWNWARD 0 1211 #endif 1212 1213 #ifndef STACK_GROWS_DOWNWARD 1214 #define STACK_GROWS_DOWNWARD 0 1215 #endif 1216 1217 #ifndef STACK_PUSH_CODE 1218 #if STACK_GROWS_DOWNWARD 1219 #define STACK_PUSH_CODE PRE_DEC 1220 #else 1221 #define STACK_PUSH_CODE PRE_INC 1222 #endif 1223 #endif 1224 1225 /* Default value for flag_pie when flag_pie is initialized to -1: 1226 --enable-default-pie: Default flag_pie to -fPIE. 1227 --disable-default-pie: Default flag_pie to 0. 1228 */ 1229 #ifdef ENABLE_DEFAULT_PIE 1230 # ifndef DEFAULT_FLAG_PIE 1231 # define DEFAULT_FLAG_PIE 2 1232 # endif 1233 #else 1234 # define DEFAULT_FLAG_PIE 0 1235 #endif 1236 1237 #ifndef SWITCHABLE_TARGET 1238 #define SWITCHABLE_TARGET 0 1239 #endif 1240 1241 /* If the target supports integers that are wider than two 1242 HOST_WIDE_INTs on the host compiler, then the target should define 1243 TARGET_SUPPORTS_WIDE_INT and make the appropriate fixups. 1244 Otherwise the compiler really is not robust. */ 1245 #ifndef TARGET_SUPPORTS_WIDE_INT 1246 #define TARGET_SUPPORTS_WIDE_INT 0 1247 #endif 1248 1249 #ifndef SHORT_IMMEDIATES_SIGN_EXTEND 1250 #define SHORT_IMMEDIATES_SIGN_EXTEND 0 1251 #endif 1252 1253 #ifndef WORD_REGISTER_OPERATIONS 1254 #define WORD_REGISTER_OPERATIONS 0 1255 #endif 1256 1257 #ifndef LOAD_EXTEND_OP 1258 #define LOAD_EXTEND_OP(M) UNKNOWN 1259 #endif 1260 1261 #ifndef INITIAL_FRAME_ADDRESS_RTX 1262 #define INITIAL_FRAME_ADDRESS_RTX NULL 1263 #endif 1264 1265 #ifndef SETUP_FRAME_ADDRESSES 1266 #define SETUP_FRAME_ADDRESSES() do { } while (0) 1267 #endif 1268 1269 #ifndef DYNAMIC_CHAIN_ADDRESS 1270 #define DYNAMIC_CHAIN_ADDRESS(x) (x) 1271 #endif 1272 1273 #ifndef FRAME_ADDR_RTX 1274 #define FRAME_ADDR_RTX(x) (x) 1275 #endif 1276 1277 #ifndef REVERSE_CONDITION 1278 #define REVERSE_CONDITION(code, mode) reverse_condition (code) 1279 #endif 1280 1281 #ifndef TARGET_PECOFF 1282 #define TARGET_PECOFF 0 1283 #endif 1284 1285 #ifndef TARGET_COFF 1286 #define TARGET_COFF 0 1287 #endif 1288 1289 #ifndef EH_RETURN_HANDLER_RTX 1290 #define EH_RETURN_HANDLER_RTX NULL 1291 #endif 1292 1293 #ifdef GCC_INSN_FLAGS_H 1294 /* Dependent default target macro definitions 1295 1296 This section of defaults.h defines target macros that depend on generated 1297 headers. This is a bit awkward: We want to put all default definitions 1298 for target macros in defaults.h, but some of the defaults depend on the 1299 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always 1300 included by files that do include defaults.h. 1301 1302 Fortunately, the default macro definitions that depend on the HAVE_* 1303 macros are also the ones that will only be used inside GCC itself, i.e. 1304 not in the gen* programs or in target objects like libgcc. 1305 1306 Obviously, it would be best to keep this section of defaults.h as small 1307 as possible, by converting the macros defined below to target hooks or 1308 functions. 1309 */ 1310 1311 /* The default branch cost is 1. */ 1312 #ifndef BRANCH_COST 1313 #define BRANCH_COST(speed_p, predictable_p) 1 1314 #endif 1315 1316 /* If a memory-to-memory move would take MOVE_RATIO or more simple 1317 move-instruction sequences, we will do a movmem or libcall instead. */ 1318 1319 #ifndef MOVE_RATIO 1320 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti) 1321 #define MOVE_RATIO(speed) 2 1322 #else 1323 /* If we are optimizing for space (-Os), cut down the default move ratio. */ 1324 #define MOVE_RATIO(speed) ((speed) ? 15 : 3) 1325 #endif 1326 #endif 1327 1328 /* If a clear memory operation would take CLEAR_RATIO or more simple 1329 move-instruction sequences, we will do a setmem or libcall instead. */ 1330 1331 #ifndef CLEAR_RATIO 1332 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti) 1333 #define CLEAR_RATIO(speed) 2 1334 #else 1335 /* If we are optimizing for space, cut down the default clear ratio. */ 1336 #define CLEAR_RATIO(speed) ((speed) ? 15 :3) 1337 #endif 1338 #endif 1339 1340 /* If a memory set (to value other than zero) operation would take 1341 SET_RATIO or more simple move-instruction sequences, we will do a movmem 1342 or libcall instead. */ 1343 #ifndef SET_RATIO 1344 #define SET_RATIO(speed) MOVE_RATIO (speed) 1345 #endif 1346 1347 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save. 1348 Normally move_insn, so Pmode stack pointer. */ 1349 1350 #ifndef STACK_SAVEAREA_MODE 1351 #define STACK_SAVEAREA_MODE(LEVEL) Pmode 1352 #endif 1353 1354 /* Supply a default definition of STACK_SIZE_MODE for 1355 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */ 1356 1357 #ifndef STACK_SIZE_MODE 1358 #define STACK_SIZE_MODE word_mode 1359 #endif 1360 1361 /* Default value for flag_stack_protect when flag_stack_protect is initialized to -1: 1362 --enable-default-ssp: Default flag_stack_protect to -fstack-protector-strong. 1363 --disable-default-ssp: Default flag_stack_protect to 0. 1364 */ 1365 #ifdef ENABLE_DEFAULT_SSP 1366 # ifndef DEFAULT_FLAG_SSP 1367 # define DEFAULT_FLAG_SSP 3 1368 # endif 1369 #else 1370 # define DEFAULT_FLAG_SSP 0 1371 #endif 1372 1373 /* Provide default values for the macros controlling stack checking. */ 1374 1375 /* The default is neither full builtin stack checking... */ 1376 #ifndef STACK_CHECK_BUILTIN 1377 #define STACK_CHECK_BUILTIN 0 1378 #endif 1379 1380 /* ...nor static builtin stack checking. */ 1381 #ifndef STACK_CHECK_STATIC_BUILTIN 1382 #define STACK_CHECK_STATIC_BUILTIN 0 1383 #endif 1384 1385 /* The default interval is one page (4096 bytes). */ 1386 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP 1387 #define STACK_CHECK_PROBE_INTERVAL_EXP 12 1388 #endif 1389 1390 /* The default is not to move the stack pointer. */ 1391 #ifndef STACK_CHECK_MOVING_SP 1392 #define STACK_CHECK_MOVING_SP 0 1393 #endif 1394 1395 /* This is a kludge to try to capture the discrepancy between the old 1396 mechanism (generic stack checking) and the new mechanism (static 1397 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped 1398 for the latter because part of the protection area is effectively 1399 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */ 1400 #ifdef STACK_CHECK_PROTECT 1401 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT 1402 #else 1403 #define STACK_OLD_CHECK_PROTECT \ 1404 (!global_options.x_flag_exceptions \ 1405 ? 75 * UNITS_PER_WORD \ 1406 : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1407 ? 4 * 1024 \ 1408 : 8 * 1024) 1409 #endif 1410 1411 /* Minimum amount of stack required to recover from an anticipated stack 1412 overflow detection. The default value conveys an estimate of the amount 1413 of stack required to propagate an exception. */ 1414 #ifndef STACK_CHECK_PROTECT 1415 #define STACK_CHECK_PROTECT \ 1416 (!global_options.x_flag_exceptions \ 1417 ? 4 * 1024 \ 1418 : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1419 ? 8 * 1024 \ 1420 : 12 * 1024) 1421 #endif 1422 1423 /* Make the maximum frame size be the largest we can and still only need 1424 one probe per function. */ 1425 #ifndef STACK_CHECK_MAX_FRAME_SIZE 1426 #define STACK_CHECK_MAX_FRAME_SIZE \ 1427 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD) 1428 #endif 1429 1430 /* This is arbitrary, but should be large enough everywhere. */ 1431 #ifndef STACK_CHECK_FIXED_FRAME_SIZE 1432 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) 1433 #endif 1434 1435 /* Provide a reasonable default for the maximum size of an object to 1436 allocate in the fixed frame. We may need to be able to make this 1437 controllable by the user at some point. */ 1438 #ifndef STACK_CHECK_MAX_VAR_SIZE 1439 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) 1440 #endif 1441 1442 /* By default, the C++ compiler will use function addresses in the 1443 vtable entries. Setting this nonzero tells the compiler to use 1444 function descriptors instead. The value of this macro says how 1445 many words wide the descriptor is (normally 2). It is assumed 1446 that the address of a function descriptor may be treated as a 1447 pointer to a function. */ 1448 #ifndef TARGET_VTABLE_USES_DESCRIPTORS 1449 #define TARGET_VTABLE_USES_DESCRIPTORS 0 1450 #endif 1451 1452 #endif /* GCC_INSN_FLAGS_H */ 1453 1454 #ifndef DWARF_GNAT_ENCODINGS_DEFAULT 1455 #define DWARF_GNAT_ENCODINGS_DEFAULT DWARF_GNAT_ENCODINGS_GDB 1456 #endif 1457 1458 #endif /* ! GCC_DEFAULTS_H */ 1459