1 /* Definitions of various defaults for tm.h macros. 2 Copyright (C) 1992-2020 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 #ifndef CHAR8_TYPE 587 #define CHAR8_TYPE "unsigned char" 588 #endif 589 590 #ifdef UINT_LEAST16_TYPE 591 #define CHAR16_TYPE UINT_LEAST16_TYPE 592 #else 593 #define CHAR16_TYPE "short unsigned int" 594 #endif 595 596 #ifdef UINT_LEAST32_TYPE 597 #define CHAR32_TYPE UINT_LEAST32_TYPE 598 #else 599 #define CHAR32_TYPE "unsigned int" 600 #endif 601 602 #ifndef WCHAR_TYPE 603 #define WCHAR_TYPE "int" 604 #endif 605 606 /* WCHAR_TYPE gets overridden by -fshort-wchar. */ 607 #define MODIFIED_WCHAR_TYPE \ 608 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE) 609 610 #ifndef PTRDIFF_TYPE 611 #define PTRDIFF_TYPE "long int" 612 #endif 613 614 #ifndef WINT_TYPE 615 #define WINT_TYPE "unsigned int" 616 #endif 617 618 #ifndef INTMAX_TYPE 619 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 620 ? "int" \ 621 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 622 ? "long int" \ 623 : "long long int")) 624 #endif 625 626 #ifndef UINTMAX_TYPE 627 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 628 ? "unsigned int" \ 629 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 630 ? "long unsigned int" \ 631 : "long long unsigned int")) 632 #endif 633 634 635 /* There are no default definitions of these <stdint.h> types. */ 636 637 #ifndef SIG_ATOMIC_TYPE 638 #define SIG_ATOMIC_TYPE ((const char *) NULL) 639 #endif 640 641 #ifndef INT8_TYPE 642 #define INT8_TYPE ((const char *) NULL) 643 #endif 644 645 #ifndef INT16_TYPE 646 #define INT16_TYPE ((const char *) NULL) 647 #endif 648 649 #ifndef INT32_TYPE 650 #define INT32_TYPE ((const char *) NULL) 651 #endif 652 653 #ifndef INT64_TYPE 654 #define INT64_TYPE ((const char *) NULL) 655 #endif 656 657 #ifndef UINT8_TYPE 658 #define UINT8_TYPE ((const char *) NULL) 659 #endif 660 661 #ifndef UINT16_TYPE 662 #define UINT16_TYPE ((const char *) NULL) 663 #endif 664 665 #ifndef UINT32_TYPE 666 #define UINT32_TYPE ((const char *) NULL) 667 #endif 668 669 #ifndef UINT64_TYPE 670 #define UINT64_TYPE ((const char *) NULL) 671 #endif 672 673 #ifndef INT_LEAST8_TYPE 674 #define INT_LEAST8_TYPE ((const char *) NULL) 675 #endif 676 677 #ifndef INT_LEAST16_TYPE 678 #define INT_LEAST16_TYPE ((const char *) NULL) 679 #endif 680 681 #ifndef INT_LEAST32_TYPE 682 #define INT_LEAST32_TYPE ((const char *) NULL) 683 #endif 684 685 #ifndef INT_LEAST64_TYPE 686 #define INT_LEAST64_TYPE ((const char *) NULL) 687 #endif 688 689 #ifndef UINT_LEAST8_TYPE 690 #define UINT_LEAST8_TYPE ((const char *) NULL) 691 #endif 692 693 #ifndef UINT_LEAST16_TYPE 694 #define UINT_LEAST16_TYPE ((const char *) NULL) 695 #endif 696 697 #ifndef UINT_LEAST32_TYPE 698 #define UINT_LEAST32_TYPE ((const char *) NULL) 699 #endif 700 701 #ifndef UINT_LEAST64_TYPE 702 #define UINT_LEAST64_TYPE ((const char *) NULL) 703 #endif 704 705 #ifndef INT_FAST8_TYPE 706 #define INT_FAST8_TYPE ((const char *) NULL) 707 #endif 708 709 #ifndef INT_FAST16_TYPE 710 #define INT_FAST16_TYPE ((const char *) NULL) 711 #endif 712 713 #ifndef INT_FAST32_TYPE 714 #define INT_FAST32_TYPE ((const char *) NULL) 715 #endif 716 717 #ifndef INT_FAST64_TYPE 718 #define INT_FAST64_TYPE ((const char *) NULL) 719 #endif 720 721 #ifndef UINT_FAST8_TYPE 722 #define UINT_FAST8_TYPE ((const char *) NULL) 723 #endif 724 725 #ifndef UINT_FAST16_TYPE 726 #define UINT_FAST16_TYPE ((const char *) NULL) 727 #endif 728 729 #ifndef UINT_FAST32_TYPE 730 #define UINT_FAST32_TYPE ((const char *) NULL) 731 #endif 732 733 #ifndef UINT_FAST64_TYPE 734 #define UINT_FAST64_TYPE ((const char *) NULL) 735 #endif 736 737 #ifndef INTPTR_TYPE 738 #define INTPTR_TYPE ((const char *) NULL) 739 #endif 740 741 #ifndef UINTPTR_TYPE 742 #define UINTPTR_TYPE ((const char *) NULL) 743 #endif 744 745 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ 746 #ifndef POINTER_SIZE 747 #define POINTER_SIZE BITS_PER_WORD 748 #endif 749 #ifndef POINTER_SIZE_UNITS 750 #define POINTER_SIZE_UNITS ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT) 751 #endif 752 753 754 #ifndef PIC_OFFSET_TABLE_REGNUM 755 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM 756 #endif 757 758 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 759 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0 760 #endif 761 762 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES 763 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 764 #endif 765 766 #ifndef TARGET_DECLSPEC 767 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES 768 /* If the target supports the "dllimport" attribute, users are 769 probably used to the "__declspec" syntax. */ 770 #define TARGET_DECLSPEC 1 771 #else 772 #define TARGET_DECLSPEC 0 773 #endif 774 #endif 775 776 /* By default, the preprocessor should be invoked the same way in C++ 777 as in C. */ 778 #ifndef CPLUSPLUS_CPP_SPEC 779 #ifdef CPP_SPEC 780 #define CPLUSPLUS_CPP_SPEC CPP_SPEC 781 #endif 782 #endif 783 784 #ifndef ACCUMULATE_OUTGOING_ARGS 785 #define ACCUMULATE_OUTGOING_ARGS 0 786 #endif 787 788 /* By default, use the GNU runtime for Objective C. */ 789 #ifndef NEXT_OBJC_RUNTIME 790 #define NEXT_OBJC_RUNTIME 0 791 #endif 792 793 /* Supply a default definition for PUSH_ARGS. */ 794 #ifndef PUSH_ARGS 795 #ifdef PUSH_ROUNDING 796 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS 797 #else 798 #define PUSH_ARGS 0 799 #endif 800 #endif 801 802 /* Decide whether a function's arguments should be processed 803 from first to last or from last to first. 804 805 They should if the stack and args grow in opposite directions, but 806 only if we have push insns. */ 807 808 #ifdef PUSH_ROUNDING 809 810 #ifndef PUSH_ARGS_REVERSED 811 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) 812 #define PUSH_ARGS_REVERSED PUSH_ARGS 813 #endif 814 #endif 815 816 #endif 817 818 #ifndef PUSH_ARGS_REVERSED 819 #define PUSH_ARGS_REVERSED 0 820 #endif 821 822 /* Default value for the alignment (in bits) a C conformant malloc has to 823 provide. This default is intended to be safe and always correct. */ 824 #ifndef MALLOC_ABI_ALIGNMENT 825 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD 826 #endif 827 828 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. 829 STACK_BOUNDARY is required. */ 830 #ifndef PREFERRED_STACK_BOUNDARY 831 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY 832 #endif 833 834 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not 835 defined. */ 836 #ifndef INCOMING_STACK_BOUNDARY 837 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY 838 #endif 839 840 #ifndef TARGET_DEFAULT_PACK_STRUCT 841 #define TARGET_DEFAULT_PACK_STRUCT 0 842 #endif 843 844 /* By default, the vtable entries are void pointers, the so the alignment 845 is the same as pointer alignment. The value of this macro specifies 846 the alignment of the vtable entry in bits. It should be defined only 847 when special alignment is necessary. */ 848 #ifndef TARGET_VTABLE_ENTRY_ALIGN 849 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE 850 #endif 851 852 /* There are a few non-descriptor entries in the vtable at offsets below 853 zero. If these entries must be padded (say, to preserve the alignment 854 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of 855 words in each data entry. */ 856 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE 857 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 858 #endif 859 860 /* Decide whether it is safe to use a local alias for a virtual function 861 when constructing thunks. */ 862 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P 863 #ifdef ASM_OUTPUT_DEF 864 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 865 #else 866 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 867 #endif 868 #endif 869 870 /* Decide whether target supports aliases. */ 871 #ifndef TARGET_SUPPORTS_ALIASES 872 #ifdef ASM_OUTPUT_DEF 873 #define TARGET_SUPPORTS_ALIASES 1 874 #else 875 #define TARGET_SUPPORTS_ALIASES 0 876 #endif 877 #endif 878 879 /* Select a format to encode pointers in exception handling data. We 880 prefer those that result in fewer dynamic relocations. Assume no 881 special support here and encode direct references. */ 882 #ifndef ASM_PREFERRED_EH_DATA_FORMAT 883 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr 884 #endif 885 886 /* By default, the C++ compiler will use the lowest bit of the pointer 887 to function to indicate a pointer-to-member-function points to a 888 virtual member function. However, if FUNCTION_BOUNDARY indicates 889 function addresses aren't always even, the lowest bit of the delta 890 field will be used. */ 891 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION 892 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ 893 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ 894 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) 895 #endif 896 897 #ifndef DEFAULT_GDB_EXTENSIONS 898 #define DEFAULT_GDB_EXTENSIONS 1 899 #endif 900 901 /* If more than one debugging type is supported, you must define 902 PREFERRED_DEBUGGING_TYPE to choose the default. */ 903 904 #if 1 < (defined (DBX_DEBUGGING_INFO) \ 905 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ 906 + defined (VMS_DEBUGGING_INFO)) 907 #ifndef PREFERRED_DEBUGGING_TYPE 908 #error You must define PREFERRED_DEBUGGING_TYPE 909 #endif /* no PREFERRED_DEBUGGING_TYPE */ 910 911 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE 912 here so other code needn't care. */ 913 #elif defined DBX_DEBUGGING_INFO 914 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 915 916 #elif defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO 917 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 918 919 #elif defined VMS_DEBUGGING_INFO 920 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG 921 922 #elif defined XCOFF_DEBUGGING_INFO 923 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG 924 925 #else 926 /* No debugging format is supported by this target. */ 927 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG 928 #endif 929 930 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL 931 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false 932 #endif 933 934 /* True if the targets integer-comparison functions return { 0, 1, 2 935 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used 936 instead. The libgcc routines are biased. */ 937 #ifndef TARGET_LIB_INT_CMP_BIASED 938 #define TARGET_LIB_INT_CMP_BIASED (true) 939 #endif 940 941 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, 942 then the word-endianness is the same as for integers. */ 943 #ifndef FLOAT_WORDS_BIG_ENDIAN 944 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 945 #endif 946 947 #ifndef REG_WORDS_BIG_ENDIAN 948 #define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 949 #endif 950 951 952 #ifndef TARGET_DEC_EVAL_METHOD 953 #define TARGET_DEC_EVAL_METHOD 2 954 #endif 955 956 #ifndef HAS_LONG_COND_BRANCH 957 #define HAS_LONG_COND_BRANCH 0 958 #endif 959 960 #ifndef HAS_LONG_UNCOND_BRANCH 961 #define HAS_LONG_UNCOND_BRANCH 0 962 #endif 963 964 /* Determine whether __cxa_atexit, rather than atexit, is used to 965 register C++ destructors for local statics and global objects. */ 966 #ifndef DEFAULT_USE_CXA_ATEXIT 967 #define DEFAULT_USE_CXA_ATEXIT 0 968 #endif 969 970 #if GCC_VERSION >= 3000 && defined IN_GCC 971 /* These old constraint macros shouldn't appear anywhere in a 972 configuration using MD constraint definitions. */ 973 #endif 974 975 /* Determin whether the target runtime library is Bionic */ 976 #ifndef TARGET_HAS_BIONIC 977 #define TARGET_HAS_BIONIC 0 978 #endif 979 980 /* Indicate that CLZ and CTZ are undefined at zero. */ 981 #ifndef CLZ_DEFINED_VALUE_AT_ZERO 982 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 983 #endif 984 #ifndef CTZ_DEFINED_VALUE_AT_ZERO 985 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 986 #endif 987 988 /* Provide a default value for STORE_FLAG_VALUE. */ 989 #ifndef STORE_FLAG_VALUE 990 #define STORE_FLAG_VALUE 1 991 #endif 992 993 /* This macro is used to determine what the largest unit size that 994 move_by_pieces can use is. */ 995 996 /* MOVE_MAX_PIECES is the number of bytes at a time which we can 997 move efficiently, as opposed to MOVE_MAX which is the maximum 998 number of bytes we can move with a single instruction. */ 999 1000 #ifndef MOVE_MAX_PIECES 1001 #define MOVE_MAX_PIECES MOVE_MAX 1002 #endif 1003 1004 /* STORE_MAX_PIECES is the number of bytes at a time that we can 1005 store efficiently. Due to internal GCC limitations, this is 1006 MOVE_MAX_PIECES limited by the number of bytes GCC can represent 1007 for an immediate constant. */ 1008 1009 #ifndef STORE_MAX_PIECES 1010 #define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT)) 1011 #endif 1012 1013 /* Likewise for block comparisons. */ 1014 #ifndef COMPARE_MAX_PIECES 1015 #define COMPARE_MAX_PIECES MOVE_MAX_PIECES 1016 #endif 1017 1018 #ifndef MAX_MOVE_MAX 1019 #define MAX_MOVE_MAX MOVE_MAX 1020 #endif 1021 1022 #ifndef MIN_UNITS_PER_WORD 1023 #define MIN_UNITS_PER_WORD UNITS_PER_WORD 1024 #endif 1025 1026 #ifndef MAX_BITS_PER_WORD 1027 #define MAX_BITS_PER_WORD BITS_PER_WORD 1028 #endif 1029 1030 #ifndef STACK_POINTER_OFFSET 1031 #define STACK_POINTER_OFFSET 0 1032 #endif 1033 1034 #ifndef LOCAL_REGNO 1035 #define LOCAL_REGNO(REGNO) 0 1036 #endif 1037 1038 #ifndef HONOR_REG_ALLOC_ORDER 1039 #define HONOR_REG_ALLOC_ORDER 0 1040 #endif 1041 1042 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, 1043 the stack pointer does not matter. The value is tested only in 1044 functions that have frame pointers. */ 1045 #ifndef EXIT_IGNORE_STACK 1046 #define EXIT_IGNORE_STACK 0 1047 #endif 1048 1049 /* Assume that case vectors are not pc-relative. */ 1050 #ifndef CASE_VECTOR_PC_RELATIVE 1051 #define CASE_VECTOR_PC_RELATIVE 0 1052 #endif 1053 1054 /* Force minimum alignment to be able to use the least significant bits 1055 for distinguishing descriptor addresses from code addresses. */ 1056 #define FUNCTION_ALIGNMENT(ALIGN) \ 1057 (lang_hooks.custom_function_descriptors \ 1058 && targetm.calls.custom_function_descriptors > 0 \ 1059 ? MAX ((ALIGN), \ 1060 2 * targetm.calls.custom_function_descriptors * BITS_PER_UNIT)\ 1061 : (ALIGN)) 1062 1063 /* Assume that trampolines need function alignment. */ 1064 #ifndef TRAMPOLINE_ALIGNMENT 1065 #define TRAMPOLINE_ALIGNMENT FUNCTION_ALIGNMENT (FUNCTION_BOUNDARY) 1066 #endif 1067 1068 /* Register mappings for target machines without register windows. */ 1069 #ifndef INCOMING_REGNO 1070 #define INCOMING_REGNO(N) (N) 1071 #endif 1072 1073 #ifndef OUTGOING_REGNO 1074 #define OUTGOING_REGNO(N) (N) 1075 #endif 1076 1077 #ifndef SHIFT_COUNT_TRUNCATED 1078 #define SHIFT_COUNT_TRUNCATED 0 1079 #endif 1080 1081 #ifndef LEGITIMATE_PIC_OPERAND_P 1082 #define LEGITIMATE_PIC_OPERAND_P(X) 1 1083 #endif 1084 1085 #ifndef TARGET_MEM_CONSTRAINT 1086 #define TARGET_MEM_CONSTRAINT 'm' 1087 #endif 1088 1089 #ifndef REVERSIBLE_CC_MODE 1090 #define REVERSIBLE_CC_MODE(MODE) 0 1091 #endif 1092 1093 /* Biggest alignment supported by the object file format of this machine. */ 1094 #ifndef MAX_OFILE_ALIGNMENT 1095 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT 1096 #endif 1097 1098 #ifndef FRAME_GROWS_DOWNWARD 1099 #define FRAME_GROWS_DOWNWARD 0 1100 #endif 1101 1102 #ifndef RETURN_ADDR_IN_PREVIOUS_FRAME 1103 #define RETURN_ADDR_IN_PREVIOUS_FRAME 0 1104 #endif 1105 1106 /* On most machines, the CFA coincides with the first incoming parm. */ 1107 #ifndef ARG_POINTER_CFA_OFFSET 1108 #define ARG_POINTER_CFA_OFFSET(FNDECL) \ 1109 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size) 1110 #endif 1111 1112 /* On most machines, we use the CFA as DW_AT_frame_base. */ 1113 #ifndef CFA_FRAME_BASE_OFFSET 1114 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0 1115 #endif 1116 1117 /* The offset from the incoming value of %sp to the top of the stack frame 1118 for the current function. */ 1119 #ifndef INCOMING_FRAME_SP_OFFSET 1120 #define INCOMING_FRAME_SP_OFFSET 0 1121 #endif 1122 1123 #ifndef HARD_REGNO_NREGS_HAS_PADDING 1124 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0 1125 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1 1126 #endif 1127 1128 #ifndef OUTGOING_REG_PARM_STACK_SPACE 1129 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0 1130 #endif 1131 1132 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by 1133 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best 1134 effort stack alignment supported by the backend. If the backend 1135 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and 1136 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack 1137 boundary will limit the maximum guaranteed stack alignment. */ 1138 #ifdef MAX_STACK_ALIGNMENT 1139 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT 1140 #else 1141 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY 1142 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY 1143 #endif 1144 1145 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY) 1146 1147 #ifndef LOCAL_ALIGNMENT 1148 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT 1149 #endif 1150 1151 #ifndef STACK_SLOT_ALIGNMENT 1152 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \ 1153 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN)) 1154 #endif 1155 1156 #ifndef LOCAL_DECL_ALIGNMENT 1157 #define LOCAL_DECL_ALIGNMENT(DECL) \ 1158 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL)) 1159 #endif 1160 1161 #ifndef MINIMUM_ALIGNMENT 1162 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN) 1163 #endif 1164 1165 /* Alignment value for attribute ((aligned)). */ 1166 #ifndef ATTRIBUTE_ALIGNED_VALUE 1167 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT 1168 #endif 1169 1170 /* For most ports anything that evaluates to a constant symbolic 1171 or integer value is acceptable as a constant address. */ 1172 #ifndef CONSTANT_ADDRESS_P 1173 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE) 1174 #endif 1175 1176 #ifndef MAX_FIXED_MODE_SIZE 1177 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode) 1178 #endif 1179 1180 /* Nonzero if structures and unions should be returned in memory. 1181 1182 This should only be defined if compatibility with another compiler or 1183 with an ABI is needed, because it results in slower code. */ 1184 1185 #ifndef DEFAULT_PCC_STRUCT_RETURN 1186 #define DEFAULT_PCC_STRUCT_RETURN 1 1187 #endif 1188 1189 #ifndef PCC_BITFIELD_TYPE_MATTERS 1190 #define PCC_BITFIELD_TYPE_MATTERS false 1191 #endif 1192 1193 #ifndef INSN_SETS_ARE_DELAYED 1194 #define INSN_SETS_ARE_DELAYED(INSN) false 1195 #endif 1196 1197 #ifndef INSN_REFERENCES_ARE_DELAYED 1198 #define INSN_REFERENCES_ARE_DELAYED(INSN) false 1199 #endif 1200 1201 #ifndef NO_FUNCTION_CSE 1202 #define NO_FUNCTION_CSE false 1203 #endif 1204 1205 #ifndef HARD_REGNO_RENAME_OK 1206 #define HARD_REGNO_RENAME_OK(FROM, TO) true 1207 #endif 1208 1209 #ifndef EPILOGUE_USES 1210 #define EPILOGUE_USES(REG) false 1211 #endif 1212 1213 #ifndef ARGS_GROW_DOWNWARD 1214 #define ARGS_GROW_DOWNWARD 0 1215 #endif 1216 1217 #ifndef STACK_GROWS_DOWNWARD 1218 #define STACK_GROWS_DOWNWARD 0 1219 #endif 1220 1221 #ifndef STACK_PUSH_CODE 1222 #if STACK_GROWS_DOWNWARD 1223 #define STACK_PUSH_CODE PRE_DEC 1224 #else 1225 #define STACK_PUSH_CODE PRE_INC 1226 #endif 1227 #endif 1228 1229 /* Default value for flag_pie when flag_pie is initialized to -1: 1230 --enable-default-pie: Default flag_pie to -fPIE. 1231 --disable-default-pie: Default flag_pie to 0. 1232 */ 1233 #ifdef ENABLE_DEFAULT_PIE 1234 # ifndef DEFAULT_FLAG_PIE 1235 # define DEFAULT_FLAG_PIE 2 1236 # endif 1237 #else 1238 # define DEFAULT_FLAG_PIE 0 1239 #endif 1240 1241 #ifndef SWITCHABLE_TARGET 1242 #define SWITCHABLE_TARGET 0 1243 #endif 1244 1245 /* If the target supports integers that are wider than two 1246 HOST_WIDE_INTs on the host compiler, then the target should define 1247 TARGET_SUPPORTS_WIDE_INT and make the appropriate fixups. 1248 Otherwise the compiler really is not robust. */ 1249 #ifndef TARGET_SUPPORTS_WIDE_INT 1250 #define TARGET_SUPPORTS_WIDE_INT 0 1251 #endif 1252 1253 #ifndef SHORT_IMMEDIATES_SIGN_EXTEND 1254 #define SHORT_IMMEDIATES_SIGN_EXTEND 0 1255 #endif 1256 1257 #ifndef WORD_REGISTER_OPERATIONS 1258 #define WORD_REGISTER_OPERATIONS 0 1259 #endif 1260 1261 #ifndef LOAD_EXTEND_OP 1262 #define LOAD_EXTEND_OP(M) UNKNOWN 1263 #endif 1264 1265 #ifndef INITIAL_FRAME_ADDRESS_RTX 1266 #define INITIAL_FRAME_ADDRESS_RTX NULL 1267 #endif 1268 1269 #ifndef SETUP_FRAME_ADDRESSES 1270 #define SETUP_FRAME_ADDRESSES() do { } while (0) 1271 #endif 1272 1273 #ifndef DYNAMIC_CHAIN_ADDRESS 1274 #define DYNAMIC_CHAIN_ADDRESS(x) (x) 1275 #endif 1276 1277 #ifndef FRAME_ADDR_RTX 1278 #define FRAME_ADDR_RTX(x) (x) 1279 #endif 1280 1281 #ifndef REVERSE_CONDITION 1282 #define REVERSE_CONDITION(code, mode) reverse_condition (code) 1283 #endif 1284 1285 #ifndef TARGET_PECOFF 1286 #define TARGET_PECOFF 0 1287 #endif 1288 1289 #ifndef TARGET_COFF 1290 #define TARGET_COFF 0 1291 #endif 1292 1293 #ifndef EH_RETURN_HANDLER_RTX 1294 #define EH_RETURN_HANDLER_RTX NULL 1295 #endif 1296 1297 #ifdef GCC_INSN_FLAGS_H 1298 /* Dependent default target macro definitions 1299 1300 This section of defaults.h defines target macros that depend on generated 1301 headers. This is a bit awkward: We want to put all default definitions 1302 for target macros in defaults.h, but some of the defaults depend on the 1303 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always 1304 included by files that do include defaults.h. 1305 1306 Fortunately, the default macro definitions that depend on the HAVE_* 1307 macros are also the ones that will only be used inside GCC itself, i.e. 1308 not in the gen* programs or in target objects like libgcc. 1309 1310 Obviously, it would be best to keep this section of defaults.h as small 1311 as possible, by converting the macros defined below to target hooks or 1312 functions. 1313 */ 1314 1315 /* The default branch cost is 1. */ 1316 #ifndef BRANCH_COST 1317 #define BRANCH_COST(speed_p, predictable_p) 1 1318 #endif 1319 1320 /* If a memory-to-memory move would take MOVE_RATIO or more simple 1321 move-instruction sequences, we will do a cpymem or libcall instead. */ 1322 1323 #ifndef MOVE_RATIO 1324 #if defined (HAVE_cpymemqi) || defined (HAVE_cpymemhi) || defined (HAVE_cpymemsi) || defined (HAVE_cpymemdi) || defined (HAVE_cpymemti) 1325 #define MOVE_RATIO(speed) 2 1326 #else 1327 /* If we are optimizing for space (-Os), cut down the default move ratio. */ 1328 #define MOVE_RATIO(speed) ((speed) ? 15 : 3) 1329 #endif 1330 #endif 1331 1332 /* If a clear memory operation would take CLEAR_RATIO or more simple 1333 move-instruction sequences, we will do a setmem or libcall instead. */ 1334 1335 #ifndef CLEAR_RATIO 1336 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti) 1337 #define CLEAR_RATIO(speed) 2 1338 #else 1339 /* If we are optimizing for space, cut down the default clear ratio. */ 1340 #define CLEAR_RATIO(speed) ((speed) ? 15 :3) 1341 #endif 1342 #endif 1343 1344 /* If a memory set (to value other than zero) operation would take 1345 SET_RATIO or more simple move-instruction sequences, we will do a setmem 1346 or libcall instead. */ 1347 #ifndef SET_RATIO 1348 #define SET_RATIO(speed) MOVE_RATIO (speed) 1349 #endif 1350 1351 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save. 1352 Normally move_insn, so Pmode stack pointer. */ 1353 1354 #ifndef STACK_SAVEAREA_MODE 1355 #define STACK_SAVEAREA_MODE(LEVEL) Pmode 1356 #endif 1357 1358 /* Supply a default definition of STACK_SIZE_MODE for 1359 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */ 1360 1361 #ifndef STACK_SIZE_MODE 1362 #define STACK_SIZE_MODE word_mode 1363 #endif 1364 1365 /* Default value for flag_stack_protect when flag_stack_protect is initialized to -1: 1366 --enable-default-ssp: Default flag_stack_protect to -fstack-protector-strong. 1367 --disable-default-ssp: Default flag_stack_protect to 0. 1368 */ 1369 #ifdef ENABLE_DEFAULT_SSP 1370 # ifndef DEFAULT_FLAG_SSP 1371 # define DEFAULT_FLAG_SSP 3 1372 # endif 1373 #else 1374 # define DEFAULT_FLAG_SSP 0 1375 #endif 1376 1377 /* Provide default values for the macros controlling stack checking. */ 1378 1379 /* The default is neither full builtin stack checking... */ 1380 #ifndef STACK_CHECK_BUILTIN 1381 #define STACK_CHECK_BUILTIN 0 1382 #endif 1383 1384 /* ...nor static builtin stack checking. */ 1385 #ifndef STACK_CHECK_STATIC_BUILTIN 1386 #define STACK_CHECK_STATIC_BUILTIN 0 1387 #endif 1388 1389 /* The default interval is one page (4096 bytes). */ 1390 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP 1391 #define STACK_CHECK_PROBE_INTERVAL_EXP 12 1392 #endif 1393 1394 /* The default is not to move the stack pointer. */ 1395 #ifndef STACK_CHECK_MOVING_SP 1396 #define STACK_CHECK_MOVING_SP 0 1397 #endif 1398 1399 /* This is a kludge to try to capture the discrepancy between the old 1400 mechanism (generic stack checking) and the new mechanism (static 1401 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped 1402 for the latter because part of the protection area is effectively 1403 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */ 1404 #ifdef STACK_CHECK_PROTECT 1405 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT 1406 #else 1407 #define STACK_OLD_CHECK_PROTECT \ 1408 (!global_options.x_flag_exceptions \ 1409 ? 75 * UNITS_PER_WORD \ 1410 : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1411 ? 4 * 1024 \ 1412 : 8 * 1024) 1413 #endif 1414 1415 /* Minimum amount of stack required to recover from an anticipated stack 1416 overflow detection. The default value conveys an estimate of the amount 1417 of stack required to propagate an exception. */ 1418 #ifndef STACK_CHECK_PROTECT 1419 #define STACK_CHECK_PROTECT \ 1420 (!global_options.x_flag_exceptions \ 1421 ? 4 * 1024 \ 1422 : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1423 ? 8 * 1024 \ 1424 : 12 * 1024) 1425 #endif 1426 1427 /* Make the maximum frame size be the largest we can and still only need 1428 one probe per function. */ 1429 #ifndef STACK_CHECK_MAX_FRAME_SIZE 1430 #define STACK_CHECK_MAX_FRAME_SIZE \ 1431 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD) 1432 #endif 1433 1434 /* This is arbitrary, but should be large enough everywhere. */ 1435 #ifndef STACK_CHECK_FIXED_FRAME_SIZE 1436 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) 1437 #endif 1438 1439 /* Provide a reasonable default for the maximum size of an object to 1440 allocate in the fixed frame. We may need to be able to make this 1441 controllable by the user at some point. */ 1442 #ifndef STACK_CHECK_MAX_VAR_SIZE 1443 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) 1444 #endif 1445 1446 /* By default, the C++ compiler will use function addresses in the 1447 vtable entries. Setting this nonzero tells the compiler to use 1448 function descriptors instead. The value of this macro says how 1449 many words wide the descriptor is (normally 2). It is assumed 1450 that the address of a function descriptor may be treated as a 1451 pointer to a function. */ 1452 #ifndef TARGET_VTABLE_USES_DESCRIPTORS 1453 #define TARGET_VTABLE_USES_DESCRIPTORS 0 1454 #endif 1455 1456 #endif /* GCC_INSN_FLAGS_H */ 1457 1458 #ifndef DWARF_GNAT_ENCODINGS_DEFAULT 1459 #define DWARF_GNAT_ENCODINGS_DEFAULT DWARF_GNAT_ENCODINGS_GDB 1460 #endif 1461 1462 #ifndef USED_FOR_TARGET 1463 /* Done this way to keep gengtype happy. */ 1464 #if BITS_PER_UNIT == 8 1465 #define TARGET_UNIT uint8_t 1466 #elif BITS_PER_UNIT == 16 1467 #define TARGET_UNIT uint16_t 1468 #elif BITS_PER_UNIT == 32 1469 #define TARGET_UNIT uint32_t 1470 #else 1471 #error Unknown BITS_PER_UNIT 1472 #endif 1473 typedef TARGET_UNIT target_unit; 1474 #endif 1475 1476 #endif /* ! GCC_DEFAULTS_H */ 1477