1 /* Definitions of various defaults for tm.h macros. 2 Copyright (C) 1992-2013 Free Software Foundation, Inc. 3 Contributed by Ron Guilmette (rfg (at) 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_IN_DATA_SECTION) 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 /* If we have named section and we support weak symbols, then use the 381 .jcr section for recording java classes which need to be registered 382 at program start-up time. */ 383 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK 384 #ifndef JCR_SECTION_NAME 385 #define JCR_SECTION_NAME ".jcr" 386 #endif 387 #endif 388 389 /* This decision to use a .jcr section can be overridden by defining 390 USE_JCR_SECTION to 0 in target file. This is necessary if target 391 can define JCR_SECTION_NAME but does not have crtstuff or 392 linker support for .jcr section. */ 393 #ifndef TARGET_USE_JCR_SECTION 394 #ifdef JCR_SECTION_NAME 395 #define TARGET_USE_JCR_SECTION 1 396 #else 397 #define TARGET_USE_JCR_SECTION 0 398 #endif 399 #endif 400 401 /* Number of hardware registers that go into the DWARF-2 unwind info. 402 If not defined, equals FIRST_PSEUDO_REGISTER */ 403 404 #ifndef DWARF_FRAME_REGISTERS 405 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER 406 #endif 407 408 /* Offsets recorded in opcodes are a multiple of this alignment factor. */ 409 #ifndef DWARF_CIE_DATA_ALIGNMENT 410 #ifdef STACK_GROWS_DOWNWARD 411 #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) 412 #else 413 #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) 414 #endif 415 #endif 416 417 /* The DWARF 2 CFA column which tracks the return address. Normally this 418 is the column for PC, or the first column after all of the hard 419 registers. */ 420 #ifndef DWARF_FRAME_RETURN_COLUMN 421 #ifdef PC_REGNUM 422 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) 423 #else 424 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS 425 #endif 426 #endif 427 428 /* How to renumber registers for dbx and gdb. If not defined, assume 429 no renumbering is necessary. */ 430 431 #ifndef DBX_REGISTER_NUMBER 432 #define DBX_REGISTER_NUMBER(REGNO) (REGNO) 433 #endif 434 435 /* The mapping from gcc register number to DWARF 2 CFA column number. 436 By default, we just provide columns for all registers. */ 437 #ifndef DWARF_FRAME_REGNUM 438 #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) 439 #endif 440 441 /* Map register numbers held in the call frame info that gcc has 442 collected using DWARF_FRAME_REGNUM to those that should be output in 443 .debug_frame and .eh_frame. */ 444 #ifndef DWARF2_FRAME_REG_OUT 445 #define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO) 446 #endif 447 448 /* The size of addresses as they appear in the Dwarf 2 data. 449 Some architectures use word addresses to refer to code locations, 450 but Dwarf 2 info always uses byte addresses. On such machines, 451 Dwarf 2 addresses need to be larger than the architecture's 452 pointers. */ 453 #ifndef DWARF2_ADDR_SIZE 454 #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT) 455 #endif 456 457 /* The size in bytes of a DWARF field indicating an offset or length 458 relative to a debug info section, specified to be 4 bytes in the 459 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same 460 as PTR_SIZE. */ 461 #ifndef DWARF_OFFSET_SIZE 462 #define DWARF_OFFSET_SIZE 4 463 #endif 464 465 /* The size in bytes of a DWARF 4 type signature. */ 466 #ifndef DWARF_TYPE_SIGNATURE_SIZE 467 #define DWARF_TYPE_SIGNATURE_SIZE 8 468 #endif 469 470 /* Default sizes for base C types. If the sizes are different for 471 your target, you should override these values by defining the 472 appropriate symbols in your tm.h file. */ 473 474 #ifndef BITS_PER_UNIT 475 #define BITS_PER_UNIT 8 476 #endif 477 478 #ifndef BITS_PER_WORD 479 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD) 480 #endif 481 482 #ifndef CHAR_TYPE_SIZE 483 #define CHAR_TYPE_SIZE BITS_PER_UNIT 484 #endif 485 486 #ifndef BOOL_TYPE_SIZE 487 /* `bool' has size and alignment `1', on almost all platforms. */ 488 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE 489 #endif 490 491 #ifndef SHORT_TYPE_SIZE 492 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) 493 #endif 494 495 #ifndef INT_TYPE_SIZE 496 #define INT_TYPE_SIZE BITS_PER_WORD 497 #endif 498 499 #ifndef LONG_TYPE_SIZE 500 #define LONG_TYPE_SIZE BITS_PER_WORD 501 #endif 502 503 #ifndef LONG_LONG_TYPE_SIZE 504 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) 505 #endif 506 507 #ifndef WCHAR_TYPE_SIZE 508 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE 509 #endif 510 511 #ifndef FLOAT_TYPE_SIZE 512 #define FLOAT_TYPE_SIZE BITS_PER_WORD 513 #endif 514 515 #ifndef DOUBLE_TYPE_SIZE 516 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) 517 #endif 518 519 #ifndef LONG_DOUBLE_TYPE_SIZE 520 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) 521 #endif 522 523 #ifndef DECIMAL32_TYPE_SIZE 524 #define DECIMAL32_TYPE_SIZE 32 525 #endif 526 527 #ifndef DECIMAL64_TYPE_SIZE 528 #define DECIMAL64_TYPE_SIZE 64 529 #endif 530 531 #ifndef DECIMAL128_TYPE_SIZE 532 #define DECIMAL128_TYPE_SIZE 128 533 #endif 534 535 #ifndef SHORT_FRACT_TYPE_SIZE 536 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT 537 #endif 538 539 #ifndef FRACT_TYPE_SIZE 540 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2) 541 #endif 542 543 #ifndef LONG_FRACT_TYPE_SIZE 544 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4) 545 #endif 546 547 #ifndef LONG_LONG_FRACT_TYPE_SIZE 548 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8) 549 #endif 550 551 #ifndef SHORT_ACCUM_TYPE_SIZE 552 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2) 553 #endif 554 555 #ifndef ACCUM_TYPE_SIZE 556 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2) 557 #endif 558 559 #ifndef LONG_ACCUM_TYPE_SIZE 560 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2) 561 #endif 562 563 #ifndef LONG_LONG_ACCUM_TYPE_SIZE 564 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2) 565 #endif 566 567 /* We let tm.h override the types used here, to handle trivial differences 568 such as the choice of unsigned int or long unsigned int for size_t. 569 When machines start needing nontrivial differences in the size type, 570 it would be best to do something here to figure out automatically 571 from other information what type to use. */ 572 573 #ifndef SIZE_TYPE 574 #define SIZE_TYPE "long unsigned int" 575 #endif 576 577 #ifndef SIZETYPE 578 #define SIZETYPE SIZE_TYPE 579 #endif 580 581 #ifndef PID_TYPE 582 #define PID_TYPE "int" 583 #endif 584 585 /* If GCC knows the exact uint_least16_t and uint_least32_t types from 586 <stdint.h>, use them for char16_t and char32_t. Otherwise, use 587 these guesses; getting the wrong type of a given width will not 588 affect C++ name mangling because in C++ these are distinct types 589 not typedefs. */ 590 591 #ifdef UINT_LEAST16_TYPE 592 #define CHAR16_TYPE UINT_LEAST16_TYPE 593 #else 594 #define CHAR16_TYPE "short unsigned int" 595 #endif 596 597 #ifdef UINT_LEAST32_TYPE 598 #define CHAR32_TYPE UINT_LEAST32_TYPE 599 #else 600 #define CHAR32_TYPE "unsigned int" 601 #endif 602 603 #ifndef WCHAR_TYPE 604 #define WCHAR_TYPE "int" 605 #endif 606 607 /* WCHAR_TYPE gets overridden by -fshort-wchar. */ 608 #define MODIFIED_WCHAR_TYPE \ 609 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE) 610 611 #ifndef PTRDIFF_TYPE 612 #define PTRDIFF_TYPE "long int" 613 #endif 614 615 #ifndef WINT_TYPE 616 #define WINT_TYPE "unsigned int" 617 #endif 618 619 #ifndef INTMAX_TYPE 620 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 621 ? "int" \ 622 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 623 ? "long int" \ 624 : "long long int")) 625 #endif 626 627 #ifndef UINTMAX_TYPE 628 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 629 ? "unsigned int" \ 630 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ 631 ? "long unsigned int" \ 632 : "long long unsigned int")) 633 #endif 634 635 636 /* There are no default definitions of these <stdint.h> types. */ 637 638 #ifndef SIG_ATOMIC_TYPE 639 #define SIG_ATOMIC_TYPE ((const char *) NULL) 640 #endif 641 642 #ifndef INT8_TYPE 643 #define INT8_TYPE ((const char *) NULL) 644 #endif 645 646 #ifndef INT16_TYPE 647 #define INT16_TYPE ((const char *) NULL) 648 #endif 649 650 #ifndef INT32_TYPE 651 #define INT32_TYPE ((const char *) NULL) 652 #endif 653 654 #ifndef INT64_TYPE 655 #define INT64_TYPE ((const char *) NULL) 656 #endif 657 658 #ifndef UINT8_TYPE 659 #define UINT8_TYPE ((const char *) NULL) 660 #endif 661 662 #ifndef UINT16_TYPE 663 #define UINT16_TYPE ((const char *) NULL) 664 #endif 665 666 #ifndef UINT32_TYPE 667 #define UINT32_TYPE ((const char *) NULL) 668 #endif 669 670 #ifndef UINT64_TYPE 671 #define UINT64_TYPE ((const char *) NULL) 672 #endif 673 674 #ifndef INT_LEAST8_TYPE 675 #define INT_LEAST8_TYPE ((const char *) NULL) 676 #endif 677 678 #ifndef INT_LEAST16_TYPE 679 #define INT_LEAST16_TYPE ((const char *) NULL) 680 #endif 681 682 #ifndef INT_LEAST32_TYPE 683 #define INT_LEAST32_TYPE ((const char *) NULL) 684 #endif 685 686 #ifndef INT_LEAST64_TYPE 687 #define INT_LEAST64_TYPE ((const char *) NULL) 688 #endif 689 690 #ifndef UINT_LEAST8_TYPE 691 #define UINT_LEAST8_TYPE ((const char *) NULL) 692 #endif 693 694 #ifndef UINT_LEAST16_TYPE 695 #define UINT_LEAST16_TYPE ((const char *) NULL) 696 #endif 697 698 #ifndef UINT_LEAST32_TYPE 699 #define UINT_LEAST32_TYPE ((const char *) NULL) 700 #endif 701 702 #ifndef UINT_LEAST64_TYPE 703 #define UINT_LEAST64_TYPE ((const char *) NULL) 704 #endif 705 706 #ifndef INT_FAST8_TYPE 707 #define INT_FAST8_TYPE ((const char *) NULL) 708 #endif 709 710 #ifndef INT_FAST16_TYPE 711 #define INT_FAST16_TYPE ((const char *) NULL) 712 #endif 713 714 #ifndef INT_FAST32_TYPE 715 #define INT_FAST32_TYPE ((const char *) NULL) 716 #endif 717 718 #ifndef INT_FAST64_TYPE 719 #define INT_FAST64_TYPE ((const char *) NULL) 720 #endif 721 722 #ifndef UINT_FAST8_TYPE 723 #define UINT_FAST8_TYPE ((const char *) NULL) 724 #endif 725 726 #ifndef UINT_FAST16_TYPE 727 #define UINT_FAST16_TYPE ((const char *) NULL) 728 #endif 729 730 #ifndef UINT_FAST32_TYPE 731 #define UINT_FAST32_TYPE ((const char *) NULL) 732 #endif 733 734 #ifndef UINT_FAST64_TYPE 735 #define UINT_FAST64_TYPE ((const char *) NULL) 736 #endif 737 738 #ifndef INTPTR_TYPE 739 #define INTPTR_TYPE ((const char *) NULL) 740 #endif 741 742 #ifndef UINTPTR_TYPE 743 #define UINTPTR_TYPE ((const char *) NULL) 744 #endif 745 746 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ 747 #ifndef POINTER_SIZE 748 #define POINTER_SIZE BITS_PER_WORD 749 #endif 750 751 #ifndef PIC_OFFSET_TABLE_REGNUM 752 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM 753 #endif 754 755 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 756 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0 757 #endif 758 759 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES 760 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 761 #endif 762 763 #ifndef TARGET_DECLSPEC 764 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES 765 /* If the target supports the "dllimport" attribute, users are 766 probably used to the "__declspec" syntax. */ 767 #define TARGET_DECLSPEC 1 768 #else 769 #define TARGET_DECLSPEC 0 770 #endif 771 #endif 772 773 /* By default, the preprocessor should be invoked the same way in C++ 774 as in C. */ 775 #ifndef CPLUSPLUS_CPP_SPEC 776 #ifdef CPP_SPEC 777 #define CPLUSPLUS_CPP_SPEC CPP_SPEC 778 #endif 779 #endif 780 781 #ifndef ACCUMULATE_OUTGOING_ARGS 782 #define ACCUMULATE_OUTGOING_ARGS 0 783 #endif 784 785 /* By default, use the GNU runtime for Objective C. */ 786 #ifndef NEXT_OBJC_RUNTIME 787 #define NEXT_OBJC_RUNTIME 0 788 #endif 789 790 /* Supply a default definition for PUSH_ARGS. */ 791 #ifndef PUSH_ARGS 792 #ifdef PUSH_ROUNDING 793 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS 794 #else 795 #define PUSH_ARGS 0 796 #endif 797 #endif 798 799 /* Decide whether a function's arguments should be processed 800 from first to last or from last to first. 801 802 They should if the stack and args grow in opposite directions, but 803 only if we have push insns. */ 804 805 #ifdef PUSH_ROUNDING 806 807 #ifndef PUSH_ARGS_REVERSED 808 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) 809 #define PUSH_ARGS_REVERSED PUSH_ARGS 810 #endif 811 #endif 812 813 #endif 814 815 #ifndef PUSH_ARGS_REVERSED 816 #define PUSH_ARGS_REVERSED 0 817 #endif 818 819 /* Default value for the alignment (in bits) a C conformant malloc has to 820 provide. This default is intended to be safe and always correct. */ 821 #ifndef MALLOC_ABI_ALIGNMENT 822 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD 823 #endif 824 825 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. 826 STACK_BOUNDARY is required. */ 827 #ifndef PREFERRED_STACK_BOUNDARY 828 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY 829 #endif 830 831 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not 832 defined. */ 833 #ifndef INCOMING_STACK_BOUNDARY 834 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY 835 #endif 836 837 #ifndef TARGET_DEFAULT_PACK_STRUCT 838 #define TARGET_DEFAULT_PACK_STRUCT 0 839 #endif 840 841 /* By default, the vtable entries are void pointers, the so the alignment 842 is the same as pointer alignment. The value of this macro specifies 843 the alignment of the vtable entry in bits. It should be defined only 844 when special alignment is necessary. */ 845 #ifndef TARGET_VTABLE_ENTRY_ALIGN 846 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE 847 #endif 848 849 /* There are a few non-descriptor entries in the vtable at offsets below 850 zero. If these entries must be padded (say, to preserve the alignment 851 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of 852 words in each data entry. */ 853 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE 854 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 855 #endif 856 857 /* Decide whether it is safe to use a local alias for a virtual function 858 when constructing thunks. */ 859 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P 860 #ifdef ASM_OUTPUT_DEF 861 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 862 #else 863 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 864 #endif 865 #endif 866 867 /* Select a format to encode pointers in exception handling data. We 868 prefer those that result in fewer dynamic relocations. Assume no 869 special support here and encode direct references. */ 870 #ifndef ASM_PREFERRED_EH_DATA_FORMAT 871 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr 872 #endif 873 874 /* By default, the C++ compiler will use the lowest bit of the pointer 875 to function to indicate a pointer-to-member-function points to a 876 virtual member function. However, if FUNCTION_BOUNDARY indicates 877 function addresses aren't always even, the lowest bit of the delta 878 field will be used. */ 879 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION 880 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ 881 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ 882 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) 883 #endif 884 885 #ifndef DEFAULT_GDB_EXTENSIONS 886 #define DEFAULT_GDB_EXTENSIONS 1 887 #endif 888 889 /* If more than one debugging type is supported, you must define 890 PREFERRED_DEBUGGING_TYPE to choose the default. */ 891 892 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \ 893 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ 894 + defined (VMS_DEBUGGING_INFO)) 895 #ifndef PREFERRED_DEBUGGING_TYPE 896 #error You must define PREFERRED_DEBUGGING_TYPE 897 #endif /* no PREFERRED_DEBUGGING_TYPE */ 898 899 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE 900 here so other code needn't care. */ 901 #elif defined DBX_DEBUGGING_INFO 902 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 903 904 #elif defined SDB_DEBUGGING_INFO 905 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG 906 907 #elif defined DWARF2_DEBUGGING_INFO 908 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 909 910 #elif defined VMS_DEBUGGING_INFO 911 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG 912 913 #elif defined XCOFF_DEBUGGING_INFO 914 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG 915 916 #else 917 /* No debugging format is supported by this target. */ 918 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG 919 #endif 920 921 #ifndef LARGEST_EXPONENT_IS_NORMAL 922 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0 923 #endif 924 925 #ifndef ROUND_TOWARDS_ZERO 926 #define ROUND_TOWARDS_ZERO 0 927 #endif 928 929 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL 930 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false 931 #endif 932 933 /* True if the targets integer-comparison functions return { 0, 1, 2 934 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used 935 instead. The libgcc routines are biased. */ 936 #ifndef TARGET_LIB_INT_CMP_BIASED 937 #define TARGET_LIB_INT_CMP_BIASED (true) 938 #endif 939 940 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, 941 then the word-endianness is the same as for integers. */ 942 #ifndef FLOAT_WORDS_BIG_ENDIAN 943 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 944 #endif 945 946 #ifndef REG_WORDS_BIG_ENDIAN 947 #define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 948 #endif 949 950 #ifdef TARGET_FLT_EVAL_METHOD 951 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1 952 #else 953 #define TARGET_FLT_EVAL_METHOD 0 954 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0 955 #endif 956 957 #ifndef TARGET_DEC_EVAL_METHOD 958 #define TARGET_DEC_EVAL_METHOD 2 959 #endif 960 961 #ifndef HAS_LONG_COND_BRANCH 962 #define HAS_LONG_COND_BRANCH 0 963 #endif 964 965 #ifndef HAS_LONG_UNCOND_BRANCH 966 #define HAS_LONG_UNCOND_BRANCH 0 967 #endif 968 969 /* Determine whether __cxa_atexit, rather than atexit, is used to 970 register C++ destructors for local statics and global objects. */ 971 #ifndef DEFAULT_USE_CXA_ATEXIT 972 #define DEFAULT_USE_CXA_ATEXIT 0 973 #endif 974 975 /* If none of these macros are defined, the port must use the new 976 technique of defining constraints in the machine description. 977 tm_p.h will define those macros that machine-independent code 978 still uses. */ 979 #if !defined CONSTRAINT_LEN \ 980 && !defined REG_CLASS_FROM_LETTER \ 981 && !defined REG_CLASS_FROM_CONSTRAINT \ 982 && !defined CONST_OK_FOR_LETTER_P \ 983 && !defined CONST_OK_FOR_CONSTRAINT_P \ 984 && !defined CONST_DOUBLE_OK_FOR_LETTER_P \ 985 && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P \ 986 && !defined EXTRA_CONSTRAINT \ 987 && !defined EXTRA_CONSTRAINT_STR \ 988 && !defined EXTRA_MEMORY_CONSTRAINT \ 989 && !defined EXTRA_ADDRESS_CONSTRAINT 990 991 #define USE_MD_CONSTRAINTS 992 993 #if GCC_VERSION >= 3000 && defined IN_GCC 994 /* These old constraint macros shouldn't appear anywhere in a 995 configuration using MD constraint definitions. */ 996 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \ 997 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT 998 #endif 999 1000 #else /* old constraint mechanism in use */ 1001 1002 /* Determine whether extra constraint letter should be handled 1003 via address reload (like 'o'). */ 1004 #ifndef EXTRA_MEMORY_CONSTRAINT 1005 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0 1006 #endif 1007 1008 /* Determine whether extra constraint letter should be handled 1009 as an address (like 'p'). */ 1010 #ifndef EXTRA_ADDRESS_CONSTRAINT 1011 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0 1012 #endif 1013 1014 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN 1015 for all the characters that it does not want to change, so things like the 1016 'length' of a digit in a matching constraint is an implementation detail, 1017 and not part of the interface. */ 1018 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1 1019 1020 #ifndef CONSTRAINT_LEN 1021 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR) 1022 #endif 1023 1024 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P) 1025 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C) 1026 #endif 1027 1028 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P) 1029 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \ 1030 CONST_DOUBLE_OK_FOR_LETTER_P (OP, C) 1031 #endif 1032 1033 #ifndef REG_CLASS_FROM_CONSTRAINT 1034 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C) 1035 #endif 1036 1037 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR) 1038 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C) 1039 #endif 1040 1041 #endif /* old constraint mechanism in use */ 1042 1043 /* Determine whether the entire c99 runtime 1044 is present in the runtime library. */ 1045 #ifndef TARGET_C99_FUNCTIONS 1046 #define TARGET_C99_FUNCTIONS 0 1047 #endif 1048 1049 /* Determine whether the target runtime library has 1050 a sincos implementation following the GNU extension. */ 1051 #ifndef TARGET_HAS_SINCOS 1052 #define TARGET_HAS_SINCOS 0 1053 #endif 1054 1055 /* Determin whether the target runtime library is Bionic */ 1056 #ifndef TARGET_HAS_BIONIC 1057 #define TARGET_HAS_BIONIC 0 1058 #endif 1059 1060 /* Indicate that CLZ and CTZ are undefined at zero. */ 1061 #ifndef CLZ_DEFINED_VALUE_AT_ZERO 1062 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 1063 #endif 1064 #ifndef CTZ_DEFINED_VALUE_AT_ZERO 1065 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 1066 #endif 1067 1068 /* Provide a default value for STORE_FLAG_VALUE. */ 1069 #ifndef STORE_FLAG_VALUE 1070 #define STORE_FLAG_VALUE 1 1071 #endif 1072 1073 /* This macro is used to determine what the largest unit size that 1074 move_by_pieces can use is. */ 1075 1076 /* MOVE_MAX_PIECES is the number of bytes at a time which we can 1077 move efficiently, as opposed to MOVE_MAX which is the maximum 1078 number of bytes we can move with a single instruction. */ 1079 1080 #ifndef MOVE_MAX_PIECES 1081 #define MOVE_MAX_PIECES MOVE_MAX 1082 #endif 1083 1084 #ifndef MAX_MOVE_MAX 1085 #define MAX_MOVE_MAX MOVE_MAX 1086 #endif 1087 1088 #ifndef MIN_UNITS_PER_WORD 1089 #define MIN_UNITS_PER_WORD UNITS_PER_WORD 1090 #endif 1091 1092 #ifndef MAX_BITS_PER_WORD 1093 #define MAX_BITS_PER_WORD BITS_PER_WORD 1094 #endif 1095 1096 #ifndef STACK_POINTER_OFFSET 1097 #define STACK_POINTER_OFFSET 0 1098 #endif 1099 1100 #ifndef LOCAL_REGNO 1101 #define LOCAL_REGNO(REGNO) 0 1102 #endif 1103 1104 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, 1105 the stack pointer does not matter. The value is tested only in 1106 functions that have frame pointers. */ 1107 #ifndef EXIT_IGNORE_STACK 1108 #define EXIT_IGNORE_STACK 0 1109 #endif 1110 1111 /* Assume that case vectors are not pc-relative. */ 1112 #ifndef CASE_VECTOR_PC_RELATIVE 1113 #define CASE_VECTOR_PC_RELATIVE 0 1114 #endif 1115 1116 /* Assume that trampolines need function alignment. */ 1117 #ifndef TRAMPOLINE_ALIGNMENT 1118 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY 1119 #endif 1120 1121 /* Register mappings for target machines without register windows. */ 1122 #ifndef INCOMING_REGNO 1123 #define INCOMING_REGNO(N) (N) 1124 #endif 1125 1126 #ifndef OUTGOING_REGNO 1127 #define OUTGOING_REGNO(N) (N) 1128 #endif 1129 1130 #ifndef SHIFT_COUNT_TRUNCATED 1131 #define SHIFT_COUNT_TRUNCATED 0 1132 #endif 1133 1134 #ifndef LEGITIMATE_PIC_OPERAND_P 1135 #define LEGITIMATE_PIC_OPERAND_P(X) 1 1136 #endif 1137 1138 #ifndef TARGET_MEM_CONSTRAINT 1139 #define TARGET_MEM_CONSTRAINT 'm' 1140 #endif 1141 1142 #ifndef REVERSIBLE_CC_MODE 1143 #define REVERSIBLE_CC_MODE(MODE) 0 1144 #endif 1145 1146 /* Biggest alignment supported by the object file format of this machine. */ 1147 #ifndef MAX_OFILE_ALIGNMENT 1148 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT 1149 #endif 1150 1151 #ifndef FRAME_GROWS_DOWNWARD 1152 #define FRAME_GROWS_DOWNWARD 0 1153 #endif 1154 1155 /* On most machines, the CFA coincides with the first incoming parm. */ 1156 #ifndef ARG_POINTER_CFA_OFFSET 1157 #define ARG_POINTER_CFA_OFFSET(FNDECL) \ 1158 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size) 1159 #endif 1160 1161 /* On most machines, we use the CFA as DW_AT_frame_base. */ 1162 #ifndef CFA_FRAME_BASE_OFFSET 1163 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0 1164 #endif 1165 1166 /* The offset from the incoming value of %sp to the top of the stack frame 1167 for the current function. */ 1168 #ifndef INCOMING_FRAME_SP_OFFSET 1169 #define INCOMING_FRAME_SP_OFFSET 0 1170 #endif 1171 1172 #ifndef HARD_REGNO_NREGS_HAS_PADDING 1173 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0 1174 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1 1175 #endif 1176 1177 #ifndef OUTGOING_REG_PARM_STACK_SPACE 1178 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0 1179 #endif 1180 1181 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by 1182 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best 1183 effort stack alignment supported by the backend. If the backend 1184 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and 1185 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack 1186 boundary will limit the maximum guaranteed stack alignment. */ 1187 #ifdef MAX_STACK_ALIGNMENT 1188 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT 1189 #else 1190 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY 1191 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY 1192 #endif 1193 1194 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY) 1195 1196 #ifndef LOCAL_ALIGNMENT 1197 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT 1198 #endif 1199 1200 #ifndef STACK_SLOT_ALIGNMENT 1201 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \ 1202 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN)) 1203 #endif 1204 1205 #ifndef LOCAL_DECL_ALIGNMENT 1206 #define LOCAL_DECL_ALIGNMENT(DECL) \ 1207 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL)) 1208 #endif 1209 1210 #ifndef MINIMUM_ALIGNMENT 1211 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN) 1212 #endif 1213 1214 /* Alignment value for attribute ((aligned)). */ 1215 #ifndef ATTRIBUTE_ALIGNED_VALUE 1216 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT 1217 #endif 1218 1219 #ifndef SLOW_UNALIGNED_ACCESS 1220 #define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) STRICT_ALIGNMENT 1221 #endif 1222 1223 /* For most ports anything that evaluates to a constant symbolic 1224 or integer value is acceptable as a constant address. */ 1225 #ifndef CONSTANT_ADDRESS_P 1226 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE) 1227 #endif 1228 1229 #ifndef MAX_FIXED_MODE_SIZE 1230 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode) 1231 #endif 1232 1233 /* Nonzero if structures and unions should be returned in memory. 1234 1235 This should only be defined if compatibility with another compiler or 1236 with an ABI is needed, because it results in slower code. */ 1237 1238 #ifndef DEFAULT_PCC_STRUCT_RETURN 1239 #define DEFAULT_PCC_STRUCT_RETURN 1 1240 #endif 1241 1242 #ifdef GCC_INSN_FLAGS_H 1243 /* Dependent default target macro definitions 1244 1245 This section of defaults.h defines target macros that depend on generated 1246 headers. This is a bit awkward: We want to put all default definitions 1247 for target macros in defaults.h, but some of the defaults depend on the 1248 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always 1249 included by files that do include defaults.h. 1250 1251 Fortunately, the default macro definitions that depend on the HAVE_* 1252 macros are also the ones that will only be used inside GCC itself, i.e. 1253 not in the gen* programs or in target objects like libgcc. 1254 1255 Obviously, it would be best to keep this section of defaults.h as small 1256 as possible, by converting the macros defined below to target hooks or 1257 functions. 1258 */ 1259 1260 /* The default branch cost is 1. */ 1261 #ifndef BRANCH_COST 1262 #define BRANCH_COST(speed_p, predictable_p) 1 1263 #endif 1264 1265 /* If a memory-to-memory move would take MOVE_RATIO or more simple 1266 move-instruction sequences, we will do a movmem or libcall instead. */ 1267 1268 #ifndef MOVE_RATIO 1269 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti) 1270 #define MOVE_RATIO(speed) 2 1271 #else 1272 /* If we are optimizing for space (-Os), cut down the default move ratio. */ 1273 #define MOVE_RATIO(speed) ((speed) ? 15 : 3) 1274 #endif 1275 #endif 1276 1277 /* If a clear memory operation would take CLEAR_RATIO or more simple 1278 move-instruction sequences, we will do a setmem or libcall instead. */ 1279 1280 #ifndef CLEAR_RATIO 1281 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti) 1282 #define CLEAR_RATIO(speed) 2 1283 #else 1284 /* If we are optimizing for space, cut down the default clear ratio. */ 1285 #define CLEAR_RATIO(speed) ((speed) ? 15 :3) 1286 #endif 1287 #endif 1288 1289 /* If a memory set (to value other than zero) operation would take 1290 SET_RATIO or more simple move-instruction sequences, we will do a movmem 1291 or libcall instead. */ 1292 #ifndef SET_RATIO 1293 #define SET_RATIO(speed) MOVE_RATIO(speed) 1294 #endif 1295 1296 /* Supply a default definition for FUNCTION_ARG_PADDING: 1297 usually pad upward, but pad short args downward on 1298 big-endian machines. */ 1299 1300 #define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \ 1301 (! BYTES_BIG_ENDIAN \ 1302 ? upward \ 1303 : (((MODE) == BLKmode \ 1304 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ 1305 && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \ 1306 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \ 1307 ? downward : upward)) 1308 1309 #ifndef FUNCTION_ARG_PADDING 1310 #define FUNCTION_ARG_PADDING(MODE, TYPE) \ 1311 DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE)) 1312 #endif 1313 1314 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save. 1315 Normally move_insn, so Pmode stack pointer. */ 1316 1317 #ifndef STACK_SAVEAREA_MODE 1318 #define STACK_SAVEAREA_MODE(LEVEL) Pmode 1319 #endif 1320 1321 /* Supply a default definition of STACK_SIZE_MODE for 1322 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */ 1323 1324 #ifndef STACK_SIZE_MODE 1325 #define STACK_SIZE_MODE word_mode 1326 #endif 1327 1328 /* Provide default values for the macros controlling stack checking. */ 1329 1330 /* The default is neither full builtin stack checking... */ 1331 #ifndef STACK_CHECK_BUILTIN 1332 #define STACK_CHECK_BUILTIN 0 1333 #endif 1334 1335 /* ...nor static builtin stack checking. */ 1336 #ifndef STACK_CHECK_STATIC_BUILTIN 1337 #define STACK_CHECK_STATIC_BUILTIN 0 1338 #endif 1339 1340 /* The default interval is one page (4096 bytes). */ 1341 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP 1342 #define STACK_CHECK_PROBE_INTERVAL_EXP 12 1343 #endif 1344 1345 /* The default is not to move the stack pointer. */ 1346 #ifndef STACK_CHECK_MOVING_SP 1347 #define STACK_CHECK_MOVING_SP 0 1348 #endif 1349 1350 /* This is a kludge to try to capture the discrepancy between the old 1351 mechanism (generic stack checking) and the new mechanism (static 1352 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped 1353 for the latter because part of the protection area is effectively 1354 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */ 1355 #ifdef STACK_CHECK_PROTECT 1356 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT 1357 #else 1358 #define STACK_OLD_CHECK_PROTECT \ 1359 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1360 ? 75 * UNITS_PER_WORD \ 1361 : 8 * 1024) 1362 #endif 1363 1364 /* Minimum amount of stack required to recover from an anticipated stack 1365 overflow detection. The default value conveys an estimate of the amount 1366 of stack required to propagate an exception. */ 1367 #ifndef STACK_CHECK_PROTECT 1368 #define STACK_CHECK_PROTECT \ 1369 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \ 1370 ? 75 * UNITS_PER_WORD \ 1371 : 12 * 1024) 1372 #endif 1373 1374 /* Make the maximum frame size be the largest we can and still only need 1375 one probe per function. */ 1376 #ifndef STACK_CHECK_MAX_FRAME_SIZE 1377 #define STACK_CHECK_MAX_FRAME_SIZE \ 1378 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD) 1379 #endif 1380 1381 /* This is arbitrary, but should be large enough everywhere. */ 1382 #ifndef STACK_CHECK_FIXED_FRAME_SIZE 1383 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) 1384 #endif 1385 1386 /* Provide a reasonable default for the maximum size of an object to 1387 allocate in the fixed frame. We may need to be able to make this 1388 controllable by the user at some point. */ 1389 #ifndef STACK_CHECK_MAX_VAR_SIZE 1390 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) 1391 #endif 1392 1393 /* By default, the C++ compiler will use function addresses in the 1394 vtable entries. Setting this nonzero tells the compiler to use 1395 function descriptors instead. The value of this macro says how 1396 many words wide the descriptor is (normally 2). It is assumed 1397 that the address of a function descriptor may be treated as a 1398 pointer to a function. */ 1399 #ifndef TARGET_VTABLE_USES_DESCRIPTORS 1400 #define TARGET_VTABLE_USES_DESCRIPTORS 0 1401 #endif 1402 1403 #ifndef SWITCHABLE_TARGET 1404 #define SWITCHABLE_TARGET 0 1405 #endif 1406 1407 #endif /* GCC_INSN_FLAGS_H */ 1408 1409 #endif /* ! GCC_DEFAULTS_H */ 1410
