gcc/output.h

   1 /* Declarations for insn-output.c and other code to write to asm_out_file.
   2    These functions are defined in final.c, and varasm.c.
   3    Copyright (C) 1987-2018 Free Software Foundation, Inc.
   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 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_OUTPUT_H
  22 #define GCC_OUTPUT_H
  23
  24 /* Initialize data in final at the beginning of a compilation.  */
  25 extern void init_final (const char *);
  26
  27 /* Enable APP processing of subsequent output.
  28    Used before the output from an `asm' statement.  */
  29 extern void app_enable (void);
  30
  31 /* Disable APP processing of subsequent output.
  32    Called from varasm.c before most kinds of output.  */
  33 extern void app_disable (void);
  34
  35 /* Return the number of slots filled in the current
  36    delayed branch sequence (we don't count the insn needing the
  37    delay slot).   Zero if not in a delayed branch sequence.  */
  38 extern int dbr_sequence_length (void);
  39
  40 /* Indicate that branch shortening hasn't yet been done.  */
  41 extern void init_insn_lengths (void);
  42
  43 /* Obtain the current length of an insn.  If branch shortening has been done,
  44    get its actual length.  Otherwise, get its maximum length.  */
  45 extern int get_attr_length (rtx_insn *);
  46
  47 /* Obtain the current length of an insn.  If branch shortening has been done,
  48    get its actual length.  Otherwise, get its minimum length.  */
  49 extern int get_attr_min_length (rtx_insn *);
  50
  51 /* Make a pass over all insns and compute their actual lengths by shortening
  52    any branches of variable length if possible.  */
  53 extern void shorten_branches (rtx_insn *);
  54
  55 const char *get_some_local_dynamic_name ();
  56
  57 /* Output assembler code for the start of a function,
  58    and initialize some of the variables in this file
  59    for the new function.  The label for the function and associated
  60    assembler pseudo-ops have already been output in
  61    `assemble_start_function'.  */
  62 extern void final_start_function (rtx_insn *, FILE *, int);
  63
  64 /* Output assembler code for the end of a function.
  65    For clarity, args are same as those of `final_start_function'
  66    even though not all of them are needed.  */
  67 extern void final_end_function (void);
  68
  69 /* Output assembler code for some insns: all or part of a function.  */
  70 extern void final (rtx_insn *, FILE *, int);
  71
  72 /* The final scan for one insn, INSN.  Args are same as in `final', except
  73    that INSN is the insn being scanned.  Value returned is the next insn to
  74    be scanned.  */
  75 extern rtx_insn *final_scan_insn (rtx_insn *, FILE *, int, int, int *);
  76
  77 /* Replace a SUBREG with a REG or a MEM, based on the thing it is a
  78    subreg of.  */
  79 extern rtx alter_subreg (rtx *, bool);
  80
  81 /* Print an operand using machine-dependent assembler syntax.  */
  82 extern void output_operand (rtx, int);
  83
  84 /* Report inconsistency between the assembler template and the operands.
  85    In an `asm', it's the user's fault; otherwise, the compiler's fault.  */
  86 extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1;
  87
  88 /* Output a string of assembler code, substituting insn operands.
  89    Defined in final.c.  */
  90 extern void output_asm_insn (const char *, rtx *);
  91
  92 /* Compute a worst-case reference address of a branch so that it
  93    can be safely used in the presence of aligned labels.
  94    Defined in final.c.  */
  95 extern int insn_current_reference_address (rtx_insn *);
  96
  97 /* Find the alignment associated with a CODE_LABEL.
  98    Defined in final.c.  */
  99 extern align_flags label_to_alignment (rtx);
 100
 101 /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol.  */
 102 extern void output_asm_label (rtx);
 103
 104 /* Marks SYMBOL_REFs in x as referenced through use of assemble_external.  */
 105 extern void mark_symbol_refs_as_used (rtx);
 106
 107 /* Print a memory reference operand for address X with access mode MODE
 108    using machine-dependent assembler syntax.  */
 109 extern void output_address (machine_mode, rtx);
 110
 111 /* Print an integer constant expression in assembler syntax.
 112    Addition and subtraction are the only arithmetic
 113    that may appear in these expressions.  */
 114 extern void output_addr_const (FILE *, rtx);
 115
 116 /* Output a string of assembler code, substituting numbers, strings
 117    and fixed syntactic prefixes.  */
 118 #if GCC_VERSION >= 3004
 119 #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
 120 #else
 121 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
 122 #endif
 123
 124 extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT);
 125 extern void fprint_ul (FILE *, unsigned long);
 126 extern int sprint_ul (char *, unsigned long);
 127
 128 extern void asm_fprintf (FILE *file, const char *p, ...)
 129      ATTRIBUTE_ASM_FPRINTF(2, 3);
 130
 131 /* Return nonzero if this function has no function calls.  */
 132 extern int leaf_function_p (void);
 133
 134 /* Return 1 if branch is a forward branch.
 135    Uses insn_shuid array, so it works only in the final pass.  May be used by
 136    output templates to add branch prediction hints, for example.  */
 137 extern int final_forward_branch_p (rtx_insn *);
 138
 139 /* Return 1 if this function uses only the registers that can be
 140    safely renumbered.  */
 141 extern int only_leaf_regs_used (void);
 142
 143 /* Scan IN_RTX and its subexpressions, and renumber all regs into those
 144    available in leaf functions.  */
 145 extern void leaf_renumber_regs_insn (rtx);
 146
 147 /* Locate the proper template for the given insn-code.  */
 148 extern const char *get_insn_template (int, rtx_insn *);
 149
 150 /* Functions in varasm.c.  */
 151
 152 /* Emit any pending weak declarations.  */
 153 extern void weak_finish (void);
 154
 155 /* Decode an `asm' spec for a declaration as a register name.
 156    Return the register number, or -1 if nothing specified,
 157    or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
 158    or -3 if ASMSPEC is `cc' and is not recognized,
 159    or -4 if ASMSPEC is `memory' and is not recognized.
 160    Accept an exact spelling or a decimal number.
 161    Prefixes such as % are optional.  */
 162 extern int decode_reg_name (const char *);
 163
 164 /* Similar to decode_reg_name, but takes an extra parameter that is a
 165    pointer to the number of (internal) registers described by the
 166    external name.  */
 167 extern int decode_reg_name_and_count (const char *, int *);
 168
 169 extern void do_assemble_alias (tree, tree);
 170
 171 extern void default_assemble_visibility (tree, int);
 172
 173 /* Output a string of literal assembler code
 174    for an `asm' keyword used between functions.  */
 175 extern void assemble_asm (tree);
 176
 177 /* Get the function's name from a decl, as described by its RTL.  */
 178 extern const char *get_fnname_from_decl (tree);
 179
 180 /* Output assembler code for the constant pool of a function and associated
 181    with defining the name of the function.  DECL describes the function.
 182    NAME is the function's name.  For the constant pool, we use the current
 183    constant pool data.  */
 184 extern void assemble_start_function (tree, const char *);
 185
 186 /* Output assembler code associated with defining the size of the
 187    function.  DECL describes the function.  NAME is the function's name.  */
 188 extern void assemble_end_function (tree, const char *);
 189
 190 /* Assemble everything that is needed for a variable or function declaration.
 191    Not used for automatic variables, and not used for function definitions.
 192    Should not be called for variables of incomplete structure type.
 193
 194    TOP_LEVEL is nonzero if this variable has file scope.
 195    AT_END is nonzero if this is the special handling, at end of compilation,
 196    to define things that have had only tentative definitions.
 197    DONT_OUTPUT_DATA if nonzero means don't actually output the
 198    initial value (that will be done by the caller).  */
 199 extern void assemble_variable (tree, int, int, int);
 200
 201 /* Put the vtable verification constructor initialization function
 202    into the preinit array.  */
 203 extern void assemble_vtv_preinit_initializer (tree);
 204
 205 /* Assemble everything that is needed for a variable declaration that has
 206    no definition in the current translation unit.  */
 207 extern void assemble_undefined_decl (tree);
 208
 209 /* Compute the alignment of variable specified by DECL.
 210    DONT_OUTPUT_DATA is from assemble_variable.  */
 211 extern void align_variable (tree decl, bool dont_output_data);
 212
 213 /* Queue for outputting something to declare an external symbol to the
 214    assembler.  (Most assemblers don't need this, so we normally output
 215    nothing.)  Do nothing if DECL is not external.  */
 216 extern void assemble_external (tree);
 217
 218 /* Assemble code to leave SIZE bytes of zeros.  */
 219 extern void assemble_zeros (unsigned HOST_WIDE_INT);
 220
 221 /* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */
 222 extern void assemble_align (int);
 223
 224 /* Assemble a string constant with the specified C string as contents.  */
 225 extern void assemble_string (const char *, int);
 226
 227 /* Similar, for calling a library function FUN.  */
 228 extern void assemble_external_libcall (rtx);
 229
 230 /* Assemble a label named NAME.  */
 231 extern void assemble_label (FILE *, const char *);
 232
 233 /* Output to FILE (an assembly file) a reference to NAME.  If NAME
 234    starts with a *, the rest of NAME is output verbatim.  Otherwise
 235    NAME is transformed in a target-specific way (usually by the
 236    addition of an underscore).  */
 237 extern void assemble_name_raw (FILE *, const char *);
 238
 239 /* Like assemble_name_raw, but should be used when NAME might refer to
 240    an entity that is also represented as a tree (like a function or
 241    variable).  If NAME does refer to such an entity, that entity will
 242    be marked as referenced.  */
 243 extern void assemble_name (FILE *, const char *);
 244
 245 /* Return the assembler directive for creating a given kind of integer
 246    object.  SIZE is the number of bytes in the object and ALIGNED_P
 247    indicates whether it is known to be aligned.  Return NULL if the
 248    assembly dialect has no such directive.
 249
 250    The returned string should be printed at the start of a new line and
 251    be followed immediately by the object's initial value.  */
 252 extern const char *integer_asm_op (int, int);
 253
 254 /* Use directive OP to assemble an integer object X.  Print OP at the
 255    start of the line, followed immediately by the value of X.  */
 256 extern void assemble_integer_with_op (const char *, rtx);
 257
 258 /* The default implementation of the asm_out.integer target hook.  */
 259 extern bool default_assemble_integer (rtx, unsigned int, int);
 260
 261 /* Assemble the integer constant X into an object of SIZE bytes.  ALIGN is
 262    the alignment of the integer in bits.  Return 1 if we were able to output
 263    the constant, otherwise 0.  If FORCE is nonzero the constant must
 264    be outputable. */
 265 extern bool assemble_integer (rtx, unsigned, unsigned, int);
 266
 267 /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL)
 268    is NULL.  */
 269 extern section *get_named_text_section (tree, const char *, const char *);
 270
 271 /* An interface to assemble_integer for the common case in which a value is
 272    fully aligned and must be printed.  VALUE is the value of the integer
 273    object and SIZE is the number of bytes it contains.  */
 274 #define assemble_aligned_integer(SIZE, VALUE) \
 275   assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
 276
 277 /* Assemble the floating-point constant D into an object of size MODE.  ALIGN
 278    is the alignment of the constant in bits.  If REVERSE is true, D is output
 279    in reverse storage order.  */
 280 extern void assemble_real (REAL_VALUE_TYPE, scalar_float_mode, unsigned,
 281                            bool = false);
 282
 283 /* Write the address of the entity given by SYMBOL to SEC.  */
 284 extern void assemble_addr_to_section (rtx, section *);
 285
 286 /* Return TRUE if and only if the constant pool has no entries.  Note
 287    that even entries we might end up choosing not to emit are counted
 288    here, so there is the potential for missed optimizations.  */
 289 extern bool constant_pool_empty_p (void);
 290
 291 extern rtx_insn *peephole (rtx_insn *);
 292
 293 extern void output_shared_constant_pool (void);
 294
 295 extern void output_object_blocks (void);
 296
 297 extern void output_quoted_string (FILE *, const char *);
 298
 299 /* When outputting delayed branch sequences, this rtx holds the
 300    sequence being output.  It is null when no delayed branch
 301    sequence is being output, so it can be used as a test in the
 302    insn output code.
 303
 304    This variable is defined  in final.c.  */
 305 extern rtx_sequence *final_sequence;
 306
 307 /* File in which assembler code is being written.  */
 308
 309 #ifdef BUFSIZ
 310 extern FILE *asm_out_file;
 311 #endif
 312
 313 /* The first global object in the file.  */
 314 extern const char *first_global_object_name;
 315
 316 /* The first weak object in the file.  */
 317 extern const char *weak_global_object_name;
 318
 319 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern.  */
 320 extern rtx current_insn_predicate;
 321
 322 /* Last insn processed by final_scan_insn.  */
 323 extern rtx_insn *current_output_insn;
 324
 325 /* Nonzero while outputting an `asm' with operands.
 326    This means that inconsistencies are the user's fault, so don't die.
 327    The precise value is the insn being output, to pass to error_for_asm.  */
 328 extern const rtx_insn *this_is_asm_operands;
 329
 330 /* Carry information from ASM_DECLARE_OBJECT_NAME
 331    to ASM_FINISH_DECLARE_OBJECT.  */
 332 extern int size_directive_output;
 333 extern tree last_assemble_variable_decl;
 334
 335 extern bool first_function_block_is_cold;
 336
 337 /* Decide whether DECL needs to be in a writable section.
 338    RELOC is the same as for SELECT_SECTION.  */
 339 extern bool decl_readonly_section (const_tree, int);
 340
 341 /* This can be used to compute RELOC for the function above, when
 342    given a constant expression.  */
 343 extern int compute_reloc_for_constant (tree);
 344
 345 /* User label prefix in effect for this compilation.  */
 346 extern const char *user_label_prefix;
 347
 348 /* Default target function prologue and epilogue assembler output.  */
 349 extern void default_function_pro_epilogue (FILE *);
 350
 351 /* Default target function switched text sections.  */
 352 extern void default_function_switched_text_sections (FILE *, tree, bool);
 353
 354 /* Default target hook that outputs nothing to a stream.  */
 355 extern void no_asm_to_stream (FILE *);
 356
 357 /* Flags controlling properties of a section.  */
 358 #define SECTION_ENTSIZE  0x000ff        /* entity size in section */
 359 #define SECTION_CODE     0x00100        /* contains code */
 360 #define SECTION_WRITE    0x00200        /* data is writable */
 361 #define SECTION_DEBUG    0x00400        /* contains debug data */
 362 #define SECTION_LINKONCE 0x00800        /* is linkonce */
 363 #define SECTION_SMALL    0x01000        /* contains "small data" */
 364 #define SECTION_BSS      0x02000        /* contains zeros only */
 365 #define SECTION_FORGET   0x04000        /* forget that we've entered the section */
 366 #define SECTION_MERGE    0x08000        /* contains mergeable data */
 367 #define SECTION_STRINGS  0x10000        /* contains zero terminated strings without
 368                                            embedded zeros */
 369 #define SECTION_OVERRIDE 0x20000        /* allow override of default flags */
 370 #define SECTION_TLS      0x40000        /* contains thread-local storage */
 371 #define SECTION_NOTYPE   0x80000        /* don't output @progbits */
 372 #define SECTION_DECLARED 0x100000       /* section has been used */
 373 #define SECTION_STYLE_MASK 0x600000     /* bits used for SECTION_STYLE */
 374 #define SECTION_COMMON   0x800000       /* contains common data */
 375 #define SECTION_RELRO    0x1000000      /* data is readonly after relocation processing */
 376 #define SECTION_EXCLUDE  0x2000000      /* discarded by the linker */
 377 #define SECTION_MACH_DEP 0x4000000      /* subsequent bits reserved for target */
 378
 379 /* This SECTION_STYLE is used for unnamed sections that we can switch
 380    to using a special assembler directive.  */
 381 #define SECTION_UNNAMED  0x000000
 382
 383 /* This SECTION_STYLE is used for named sections that we can switch
 384    to using a general section directive.  */
 385 #define SECTION_NAMED    0x200000
 386
 387 /* This SECTION_STYLE is used for sections that we cannot switch to at
 388    all.  The choice of section is implied by the directive that we use
 389    to declare the object.  */
 390 #define SECTION_NOSWITCH 0x400000
 391
 392 /* A helper function for default_elf_select_section and
 393    default_elf_unique_section.  Categorizes the DECL.  */
 394
 395 enum section_category
 396 {
 397   SECCAT_TEXT,
 398
 399   SECCAT_RODATA,
 400   SECCAT_RODATA_MERGE_STR,
 401   SECCAT_RODATA_MERGE_STR_INIT,
 402   SECCAT_RODATA_MERGE_CONST,
 403   SECCAT_SRODATA,
 404
 405   SECCAT_DATA,
 406
 407   /* To optimize loading of shared programs, define following subsections
 408      of data section:
 409         _REL    Contains data that has relocations, so they get grouped
 410                 together and dynamic linker will visit fewer pages in memory.
 411         _RO     Contains data that is otherwise read-only.  This is useful
 412                 with prelinking as most relocations won't be dynamically
 413                 linked and thus stay read only.
 414         _LOCAL  Marks data containing relocations only to local objects.
 415                 These relocations will get fully resolved by prelinking.  */
 416   SECCAT_DATA_REL,
 417   SECCAT_DATA_REL_LOCAL,
 418   SECCAT_DATA_REL_RO,
 419   SECCAT_DATA_REL_RO_LOCAL,
 420
 421   SECCAT_SDATA,
 422   SECCAT_TDATA,
 423
 424   SECCAT_BSS,
 425   SECCAT_SBSS,
 426   SECCAT_TBSS
 427 };
 428
 429 /* Information that is provided by all instances of the section type.  */
 430 struct GTY(()) section_common {
 431   /* The set of SECTION_* flags that apply to this section.  */
 432   unsigned int flags;
 433 };
 434
 435 /* Information about a SECTION_NAMED section.  */
 436 struct GTY(()) named_section {
 437   struct section_common common;
 438
 439   /* The name of the section.  */
 440   const char *name;
 441
 442   /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
 443      section is associated.  */
 444   tree decl;
 445 };
 446
 447 /* A callback that writes the assembly code for switching to an unnamed
 448    section.  The argument provides callback-specific data.  */
 449 typedef void (*unnamed_section_callback) (const void *);
 450
 451 /* Information about a SECTION_UNNAMED section.  */
 452 struct GTY(()) unnamed_section {
 453   struct section_common common;
 454
 455   /* The callback used to switch to the section, and the data that
 456      should be passed to the callback.  */
 457   unnamed_section_callback GTY ((skip)) callback;
 458   const void *GTY ((skip)) data;
 459
 460   /* The next entry in the chain of unnamed sections.  */
 461   section *next;
 462 };
 463
 464 /* A callback that writes the assembly code for a decl in a
 465    SECTION_NOSWITCH section.  DECL is the decl that should be assembled
 466    and NAME is the name of its SYMBOL_REF.  SIZE is the size of the decl
 467    in bytes and ROUNDED is that size rounded up to the next
 468    BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
 469
 470    Return true if the callback used DECL_ALIGN to set the object's
 471    alignment.  A false return value implies that we are relying
 472    on the rounded size to align the decl.  */
 473 typedef bool (*noswitch_section_callback) (tree decl, const char *name,
 474                                            unsigned HOST_WIDE_INT size,
 475                                            unsigned HOST_WIDE_INT rounded);
 476
 477 /* Information about a SECTION_NOSWITCH section.  */
 478 struct GTY(()) noswitch_section {
 479   struct section_common common;
 480
 481   /* The callback used to assemble decls in this section.  */
 482   noswitch_section_callback GTY ((skip)) callback;
 483 };
 484
 485 /* Information about a section, which may be named or unnamed.  */
 486 union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section {
 487   struct section_common GTY ((skip)) common;
 488   struct named_section GTY ((tag ("SECTION_NAMED"))) named;
 489   struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
 490   struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
 491 };
 492
 493 /* Return the style of section SECT.  */
 494 #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
 495
 496 struct object_block;
 497
 498 /* Special well-known sections.  */
 499 extern GTY(()) section *text_section;
 500 extern GTY(()) section *data_section;
 501 extern GTY(()) section *readonly_data_section;
 502 extern GTY(()) section *sdata_section;
 503 extern GTY(()) section *ctors_section;
 504 extern GTY(()) section *dtors_section;
 505 extern GTY(()) section *bss_section;
 506 extern GTY(()) section *sbss_section;
 507 extern GTY(()) section *exception_section;
 508 extern GTY(()) section *eh_frame_section;
 509 extern GTY(()) section *tls_comm_section;
 510 extern GTY(()) section *comm_section;
 511 extern GTY(()) section *lcomm_section;
 512 extern GTY(()) section *bss_noswitch_section;
 513
 514 extern GTY(()) section *in_section;
 515 extern GTY(()) bool in_cold_section_p;
 516
 517 extern section *get_unnamed_section (unsigned int, void (*) (const void *),
 518                                      const void *);
 519 extern section *get_section (const char *, unsigned int, tree);
 520 extern section *get_named_section (tree, const char *, int);
 521 extern section *get_variable_section (tree, bool);
 522 extern void place_block_symbol (rtx);
 523 extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
 524                                enum tls_model);
 525 extern section *mergeable_constant_section (machine_mode,
 526                                             unsigned HOST_WIDE_INT,
 527                                             unsigned int);
 528 extern section *function_section (tree);
 529 extern section *unlikely_text_section (void);
 530 extern section *current_function_section (void);
 531 extern void switch_to_other_text_partition (void);
 532
 533 /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
 534    not) section for PRIORITY.  */
 535 extern section *get_cdtor_priority_section (int, bool);
 536
 537 extern bool unlikely_text_section_p (section *);
 538 extern void switch_to_section (section *);
 539 extern void output_section_asm_op (const void *);
 540
 541 extern void record_tm_clone_pair (tree, tree);
 542 extern void finish_tm_clone_pairs (void);
 543 extern tree get_tm_clone_pair (tree);
 544
 545 extern void default_asm_output_source_filename (FILE *, const char *);
 546 extern void output_file_directive (FILE *, const char *);
 547
 548 extern unsigned int default_section_type_flags (tree, const char *, int);
 549
 550 extern bool have_global_bss_p (void);
 551 extern bool bss_initializer_p (const_tree, bool = false);
 552
 553 extern void default_no_named_section (const char *, unsigned int, tree);
 554 extern void default_elf_asm_named_section (const char *, unsigned int, tree);
 555 extern enum section_category categorize_decl_for_section (const_tree, int);
 556 extern void default_coff_asm_named_section (const char *, unsigned int, tree);
 557 extern void default_pe_asm_named_section (const char *, unsigned int, tree);
 558
 559 extern void default_named_section_asm_out_destructor (rtx, int);
 560 extern void default_dtor_section_asm_out_destructor (rtx, int);
 561 extern void default_named_section_asm_out_constructor (rtx, int);
 562 extern void default_ctor_section_asm_out_constructor (rtx, int);
 563
 564 extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
 565 extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
 566 extern void default_unique_section (tree, int);
 567 extern section *default_function_rodata_section (tree);
 568 extern section *default_no_function_rodata_section (tree);
 569 extern section *default_clone_table_section (void);
 570 extern section *default_select_rtx_section (machine_mode, rtx,
 571                                             unsigned HOST_WIDE_INT);
 572 extern section *default_elf_select_rtx_section (machine_mode, rtx,
 573                                                 unsigned HOST_WIDE_INT);
 574 extern void default_encode_section_info (tree, rtx, int);
 575 extern const char *default_strip_name_encoding (const char *);
 576 extern void default_asm_output_anchor (rtx);
 577 extern bool default_use_anchors_for_symbol_p (const_rtx);
 578 extern bool default_binds_local_p (const_tree);
 579 extern bool default_binds_local_p_1 (const_tree, int);
 580 extern bool default_binds_local_p_2 (const_tree);
 581 extern bool default_binds_local_p_3 (const_tree, bool, bool, bool, bool);
 582 extern void default_globalize_label (FILE *, const char *);
 583 extern void default_globalize_decl_name (FILE *, tree);
 584 extern void default_emit_unwind_label (FILE *, tree, int, int);
 585 extern void default_emit_except_table_label (FILE *);
 586 extern void default_generate_internal_label (char *, const char *,
 587                                              unsigned long);
 588 extern void default_internal_label (FILE *, const char *, unsigned long);
 589 extern void default_asm_declare_constant_name (FILE *, const char *,
 590                                                const_tree, HOST_WIDE_INT);
 591 extern void default_file_start (void);
 592 extern void file_end_indicate_exec_stack (void);
 593 extern void file_end_indicate_split_stack (void);
 594
 595 extern void default_elf_asm_output_external (FILE *file, tree,
 596                                              const char *);
 597 extern void default_elf_asm_output_limited_string (FILE *, const char *);
 598 extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int);
 599 extern void default_elf_internal_label (FILE *, const char *, unsigned long);
 600
 601 extern void default_elf_init_array_asm_out_constructor (rtx, int);
 602 extern void default_elf_fini_array_asm_out_destructor (rtx, int);
 603 extern int maybe_assemble_visibility (tree);
 604
 605 extern int default_address_cost (rtx, machine_mode, addr_space_t, bool);
 606
 607 /* Output stack usage information.  */
 608 extern void output_stack_usage (void);
 609
 610 #endif /* ! GCC_OUTPUT_H */