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) 1987-2014 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 int label_to_alignment (rtx);
 100
 101 /* Find the alignment maximum skip associated with a CODE_LABEL.
 102    Defined in final.c.  */
 103 extern int label_to_max_skip (rtx);
 104
 105 /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol.  */
 106 extern void output_asm_label (rtx);
 107
 108 /* Marks SYMBOL_REFs in x as referenced through use of assemble_external.  */
 109 extern void mark_symbol_refs_as_used (rtx);
 110
 111 /* Print a memory reference operand for address X
 112    using machine-dependent assembler syntax.  */
 113 extern void output_address (rtx);
 114
 115 /* Print an integer constant expression in assembler syntax.
 116    Addition and subtraction are the only arithmetic
 117    that may appear in these expressions.  */
 118 extern void output_addr_const (FILE *, rtx);
 119
 120 /* Output a string of assembler code, substituting numbers, strings
 121    and fixed syntactic prefixes.  */
 122 #if GCC_VERSION >= 3004
 123 #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
 124 #else
 125 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
 126 #endif
 127
 128 extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT);
 129 extern void fprint_ul (FILE *, unsigned long);
 130 extern int sprint_ul (char *, unsigned long);
 131
 132 extern void asm_fprintf (FILE *file, const char *p, ...)
 133      ATTRIBUTE_ASM_FPRINTF(2, 3);
 134
 135 /* Return nonzero if this function has no function calls.  */
 136 extern int leaf_function_p (void);
 137
 138 /* Return 1 if branch is a forward branch.
 139    Uses insn_shuid array, so it works only in the final pass.  May be used by
 140    output templates to add branch prediction hints, for example.  */
 141 extern int final_forward_branch_p (rtx_insn *);
 142
 143 /* Return 1 if this function uses only the registers that can be
 144    safely renumbered.  */
 145 extern int only_leaf_regs_used (void);
 146
 147 /* Scan IN_RTX and its subexpressions, and renumber all regs into those
 148    available in leaf functions.  */
 149 extern void leaf_renumber_regs_insn (rtx);
 150
 151 /* Locate the proper template for the given insn-code.  */
 152 extern const char *get_insn_template (int, rtx);
 153
 154 /* Functions in varasm.c.  */
 155
 156 /* Emit any pending weak declarations.  */
 157 extern void weak_finish (void);
 158
 159 /* Decode an `asm' spec for a declaration as a register name.
 160    Return the register number, or -1 if nothing specified,
 161    or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
 162    or -3 if ASMSPEC is `cc' and is not recognized,
 163    or -4 if ASMSPEC is `memory' and is not recognized.
 164    Accept an exact spelling or a decimal number.
 165    Prefixes such as % are optional.  */
 166 extern int decode_reg_name (const char *);
 167
 168 /* Similar to decode_reg_name, but takes an extra parameter that is a
 169    pointer to the number of (internal) registers described by the
 170    external name.  */
 171 extern int decode_reg_name_and_count (const char *, int *);
 172
 173 extern void do_assemble_alias (tree, tree);
 174
 175 extern void default_assemble_visibility (tree, int);
 176
 177 /* Output a string of literal assembler code
 178    for an `asm' keyword used between functions.  */
 179 extern void assemble_asm (tree);
 180
 181 /* Output assembler code for the constant pool of a function and associated
 182    with defining the name of the function.  DECL describes the function.
 183    NAME is the function's name.  For the constant pool, we use the current
 184    constant pool data.  */
 185 extern void assemble_start_function (tree, const char *);
 186
 187 /* Output assembler code associated with defining the size of the
 188    function.  DECL describes the function.  NAME is the function's name.  */
 189 extern void assemble_end_function (tree, const char *);
 190
 191 /* Assemble everything that is needed for a variable or function declaration.
 192    Not used for automatic variables, and not used for function definitions.
 193    Should not be called for variables of incomplete structure type.
 194
 195    TOP_LEVEL is nonzero if this variable has file scope.
 196    AT_END is nonzero if this is the special handling, at end of compilation,
 197    to define things that have had only tentative definitions.
 198    DONT_OUTPUT_DATA if nonzero means don't actually output the
 199    initial value (that will be done by the caller).  */
 200 extern void assemble_variable (tree, int, int, int);
 201
 202 /* Put the vtable verification constructor initialization function
 203    into the preinit array.  */
 204 extern void assemble_vtv_preinit_initializer (tree);
 205
 206 /* Compute the alignment of variable specified by DECL.
 207    DONT_OUTPUT_DATA is from assemble_variable.  */
 208 extern void align_variable (tree decl, bool dont_output_data);
 209
 210 /* Queue for outputting something to declare an external symbol to the
 211    assembler.  (Most assemblers don't need this, so we normally output
 212    nothing.)  Do nothing if DECL is not external.  */
 213 extern void assemble_external (tree);
 214
 215 /* Assemble code to leave SIZE bytes of zeros.  */
 216 extern void assemble_zeros (unsigned HOST_WIDE_INT);
 217
 218 /* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */
 219 extern void assemble_align (int);
 220
 221 /* Assemble a string constant with the specified C string as contents.  */
 222 extern void assemble_string (const char *, int);
 223
 224 /* Similar, for calling a library function FUN.  */
 225 extern void assemble_external_libcall (rtx);
 226
 227 /* Assemble a label named NAME.  */
 228 extern void assemble_label (FILE *, const char *);
 229
 230 /* Output to FILE (an assembly file) a reference to NAME.  If NAME
 231    starts with a *, the rest of NAME is output verbatim.  Otherwise
 232    NAME is transformed in a target-specific way (usually by the
 233    addition of an underscore).  */
 234 extern void assemble_name_raw (FILE *, const char *);
 235
 236 /* Like assemble_name_raw, but should be used when NAME might refer to
 237    an entity that is also represented as a tree (like a function or
 238    variable).  If NAME does refer to such an entity, that entity will
 239    be marked as referenced.  */
 240 extern void assemble_name (FILE *, const char *);
 241
 242 /* Return the assembler directive for creating a given kind of integer
 243    object.  SIZE is the number of bytes in the object and ALIGNED_P
 244    indicates whether it is known to be aligned.  Return NULL if the
 245    assembly dialect has no such directive.
 246
 247    The returned string should be printed at the start of a new line and
 248    be followed immediately by the object's initial value.  */
 249 extern const char *integer_asm_op (int, int);
 250
 251 /* Use directive OP to assemble an integer object X.  Print OP at the
 252    start of the line, followed immediately by the value of X.  */
 253 extern void assemble_integer_with_op (const char *, rtx);
 254
 255 /* The default implementation of the asm_out.integer target hook.  */
 256 extern bool default_assemble_integer (rtx, unsigned int, int);
 257
 258 /* Assemble the integer constant X into an object of SIZE bytes.  ALIGN is
 259    the alignment of the integer in bits.  Return 1 if we were able to output
 260    the constant, otherwise 0.  If FORCE is nonzero the constant must
 261    be outputable. */
 262 extern bool assemble_integer (rtx, unsigned, unsigned, int);
 263
 264 /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL)
 265    is NULL.  */
 266 extern section *get_named_text_section (tree, const char *, const char *);
 267
 268 /* An interface to assemble_integer for the common case in which a value is
 269    fully aligned and must be printed.  VALUE is the value of the integer
 270    object and SIZE is the number of bytes it contains.  */
 271 #define assemble_aligned_integer(SIZE, VALUE) \
 272   assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
 273
 274 #ifdef REAL_VALUE_TYPE_SIZE
 275 /* Assemble the floating-point constant D into an object of size MODE.  */
 276 extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
 277 #endif
 278
 279 /* Write the address of the entity given by SYMBOL to SEC.  */
 280 extern void assemble_addr_to_section (rtx, section *);
 281
 282 /* Return the size of the constant pool.  */
 283 extern int get_pool_size (void);
 284
 285 #ifdef HAVE_peephole
 286 extern rtx_insn *peephole (rtx_insn *);
 287 #endif
 288
 289 extern void output_shared_constant_pool (void);
 290
 291 extern void output_object_blocks (void);
 292
 293 extern void output_quoted_string (FILE *, const char *);
 294
 295 /* When outputting delayed branch sequences, this rtx holds the
 296    sequence being output.  It is null when no delayed branch
 297    sequence is being output, so it can be used as a test in the
 298    insn output code.
 299
 300    This variable is defined  in final.c.  */
 301 extern rtx_sequence *final_sequence;
 302
 303 /* The line number of the beginning of the current function.  Various
 304    md code needs this so that it can output relative linenumbers.  */
 305
 306 #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers.  */
 307 extern int sdb_begin_function_line;
 308 #endif
 309
 310 /* File in which assembler code is being written.  */
 311
 312 #ifdef BUFSIZ
 313 extern FILE *asm_out_file;
 314 #endif
 315
 316 /* The first global object in the file.  */
 317 extern const char *first_global_object_name;
 318
 319 /* The first weak object in the file.  */
 320 extern const char *weak_global_object_name;
 321
 322 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern.  */
 323 extern rtx current_insn_predicate;
 324
 325 /* Last insn processed by final_scan_insn.  */
 326 extern rtx_insn *current_output_insn;
 327
 328 /* Nonzero while outputting an `asm' with operands.
 329    This means that inconsistencies are the user's fault, so don't die.
 330    The precise value is the insn being output, to pass to error_for_asm.  */
 331 extern const rtx_insn *this_is_asm_operands;
 332
 333 /* Carry information from ASM_DECLARE_OBJECT_NAME
 334    to ASM_FINISH_DECLARE_OBJECT.  */
 335 extern int size_directive_output;
 336 extern tree last_assemble_variable_decl;
 337
 338 extern bool first_function_block_is_cold;
 339
 340 /* Decide whether DECL needs to be in a writable section.
 341    RELOC is the same as for SELECT_SECTION.  */
 342 extern bool decl_readonly_section (const_tree, int);
 343
 344 /* This can be used to compute RELOC for the function above, when
 345    given a constant expression.  */
 346 extern int compute_reloc_for_constant (tree);
 347
 348 /* User label prefix in effect for this compilation.  */
 349 extern const char *user_label_prefix;
 350
 351 /* Default target function prologue and epilogue assembler output.  */
 352 extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
 353
 354 /* Default target function switched text sections.  */
 355 extern void default_function_switched_text_sections (FILE *, tree, bool);
 356
 357 /* Default target hook that outputs nothing to a stream.  */
 358 extern void no_asm_to_stream (FILE *);
 359
 360 /* Flags controlling properties of a section.  */
 361 #define SECTION_ENTSIZE  0x000ff        /* entity size in section */
 362 #define SECTION_CODE     0x00100        /* contains code */
 363 #define SECTION_WRITE    0x00200        /* data is writable */
 364 #define SECTION_DEBUG    0x00400        /* contains debug data */
 365 #define SECTION_LINKONCE 0x00800        /* is linkonce */
 366 #define SECTION_SMALL    0x01000        /* contains "small data" */
 367 #define SECTION_BSS      0x02000        /* contains zeros only */
 368 #define SECTION_FORGET   0x04000        /* forget that we've entered the section */
 369 #define SECTION_MERGE    0x08000        /* contains mergeable data */
 370 #define SECTION_STRINGS  0x10000        /* contains zero terminated strings without
 371                                            embedded zeros */
 372 #define SECTION_OVERRIDE 0x20000        /* allow override of default flags */
 373 #define SECTION_TLS      0x40000        /* contains thread-local storage */
 374 #define SECTION_NOTYPE   0x80000        /* don't output @progbits */
 375 #define SECTION_DECLARED 0x100000       /* section has been used */
 376 #define SECTION_STYLE_MASK 0x600000     /* bits used for SECTION_STYLE */
 377 #define SECTION_COMMON   0x800000       /* contains common data */
 378 #define SECTION_RELRO    0x1000000      /* data is readonly after relocation processing */
 379 #define SECTION_EXCLUDE  0x2000000      /* discarded by the linker */
 380 #define SECTION_MACH_DEP 0x4000000      /* subsequent bits reserved for target */
 381
 382 /* This SECTION_STYLE is used for unnamed sections that we can switch
 383    to using a special assembler directive.  */
 384 #define SECTION_UNNAMED  0x000000
 385
 386 /* This SECTION_STYLE is used for named sections that we can switch
 387    to using a general section directive.  */
 388 #define SECTION_NAMED    0x200000
 389
 390 /* This SECTION_STYLE is used for sections that we cannot switch to at
 391    all.  The choice of section is implied by the directive that we use
 392    to declare the object.  */
 393 #define SECTION_NOSWITCH 0x400000
 394
 395 /* A helper function for default_elf_select_section and
 396    default_elf_unique_section.  Categorizes the DECL.  */
 397
 398 enum section_category
 399 {
 400   SECCAT_TEXT,
 401
 402   SECCAT_RODATA,
 403   SECCAT_RODATA_MERGE_STR,
 404   SECCAT_RODATA_MERGE_STR_INIT,
 405   SECCAT_RODATA_MERGE_CONST,
 406   SECCAT_SRODATA,
 407
 408   SECCAT_DATA,
 409
 410   /* To optimize loading of shared programs, define following subsections
 411      of data section:
 412         _REL    Contains data that has relocations, so they get grouped
 413                 together and dynamic linker will visit fewer pages in memory.
 414         _RO     Contains data that is otherwise read-only.  This is useful
 415                 with prelinking as most relocations won't be dynamically
 416                 linked and thus stay read only.
 417         _LOCAL  Marks data containing relocations only to local objects.
 418                 These relocations will get fully resolved by prelinking.  */
 419   SECCAT_DATA_REL,
 420   SECCAT_DATA_REL_LOCAL,
 421   SECCAT_DATA_REL_RO,
 422   SECCAT_DATA_REL_RO_LOCAL,
 423
 424   SECCAT_SDATA,
 425   SECCAT_TDATA,
 426
 427   SECCAT_BSS,
 428   SECCAT_SBSS,
 429   SECCAT_TBSS
 430 };
 431
 432 /* Information that is provided by all instances of the section type.  */
 433 struct GTY(()) section_common {
 434   /* The set of SECTION_* flags that apply to this section.  */
 435   unsigned int flags;
 436 };
 437
 438 /* Information about a SECTION_NAMED section.  */
 439 struct GTY(()) named_section {
 440   struct section_common common;
 441
 442   /* The name of the section.  */
 443   const char *name;
 444
 445   /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
 446      section is associated.  */
 447   tree decl;
 448 };
 449
 450 /* A callback that writes the assembly code for switching to an unnamed
 451    section.  The argument provides callback-specific data.  */
 452 typedef void (*unnamed_section_callback) (const void *);
 453
 454 /* Information about a SECTION_UNNAMED section.  */
 455 struct GTY(()) unnamed_section {
 456   struct section_common common;
 457
 458   /* The callback used to switch to the section, and the data that
 459      should be passed to the callback.  */
 460   unnamed_section_callback GTY ((skip)) callback;
 461   const void *GTY ((skip)) data;
 462
 463   /* The next entry in the chain of unnamed sections.  */
 464   section *next;
 465 };
 466
 467 /* A callback that writes the assembly code for a decl in a
 468    SECTION_NOSWITCH section.  DECL is the decl that should be assembled
 469    and NAME is the name of its SYMBOL_REF.  SIZE is the size of the decl
 470    in bytes and ROUNDED is that size rounded up to the next
 471    BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
 472
 473    Return true if the callback used DECL_ALIGN to set the object's
 474    alignment.  A false return value implies that we are relying
 475    on the rounded size to align the decl.  */
 476 typedef bool (*noswitch_section_callback) (tree decl, const char *name,
 477                                            unsigned HOST_WIDE_INT size,
 478                                            unsigned HOST_WIDE_INT rounded);
 479
 480 /* Information about a SECTION_NOSWITCH section.  */
 481 struct GTY(()) noswitch_section {
 482   struct section_common common;
 483
 484   /* The callback used to assemble decls in this section.  */
 485   noswitch_section_callback GTY ((skip)) callback;
 486 };
 487
 488 /* Information about a section, which may be named or unnamed.  */
 489 union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section {
 490   struct section_common GTY ((skip)) common;
 491   struct named_section GTY ((tag ("SECTION_NAMED"))) named;
 492   struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
 493   struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
 494 };
 495
 496 /* Return the style of section SECT.  */
 497 #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
 498
 499 struct object_block;
 500
 501 /* Special well-known sections.  */
 502 extern GTY(()) section *text_section;
 503 extern GTY(()) section *data_section;
 504 extern GTY(()) section *readonly_data_section;
 505 extern GTY(()) section *sdata_section;
 506 extern GTY(()) section *ctors_section;
 507 extern GTY(()) section *dtors_section;
 508 extern GTY(()) section *bss_section;
 509 extern GTY(()) section *sbss_section;
 510 extern GTY(()) section *exception_section;
 511 extern GTY(()) section *eh_frame_section;
 512 extern GTY(()) section *tls_comm_section;
 513 extern GTY(()) section *comm_section;
 514 extern GTY(()) section *lcomm_section;
 515 extern GTY(()) section *bss_noswitch_section;
 516
 517 extern GTY(()) section *in_section;
 518 extern GTY(()) bool in_cold_section_p;
 519
 520 extern section *get_unnamed_section (unsigned int, void (*) (const void *),
 521                                      const void *);
 522 extern section *get_section (const char *, unsigned int, tree);
 523 extern section *get_named_section (tree, const char *, int);
 524 extern section *get_variable_section (tree, bool);
 525 extern void place_block_symbol (rtx);
 526 extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
 527                                enum tls_model);
 528 extern section *mergeable_constant_section (enum machine_mode,
 529                                             unsigned HOST_WIDE_INT,
 530                                             unsigned int);
 531 extern section *function_section (tree);
 532 extern section *unlikely_text_section (void);
 533 extern section *current_function_section (void);
 534
 535 /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
 536    not) section for PRIORITY.  */
 537 extern section *get_cdtor_priority_section (int, bool);
 538
 539 extern bool unlikely_text_section_p (section *);
 540 extern void switch_to_section (section *);
 541 extern void output_section_asm_op (const void *);
 542
 543 extern void record_tm_clone_pair (tree, tree);
 544 extern void finish_tm_clone_pairs (void);
 545 extern tree get_tm_clone_pair (tree);
 546
 547 extern void default_asm_output_source_filename (FILE *, const char *);
 548 extern void output_file_directive (FILE *, const char *);
 549
 550 extern unsigned int default_section_type_flags (tree, const char *, int);
 551
 552 extern bool have_global_bss_p (void);
 553 extern bool bss_initializer_p (const_tree);
 554
 555 extern void default_no_named_section (const char *, unsigned int, tree);
 556 extern void default_elf_asm_named_section (const char *, unsigned int, tree);
 557 extern enum section_category categorize_decl_for_section (const_tree, int);
 558 extern void default_coff_asm_named_section (const char *, unsigned int, tree);
 559 extern void default_pe_asm_named_section (const char *, unsigned int, tree);
 560
 561 extern void default_named_section_asm_out_destructor (rtx, int);
 562 extern void default_dtor_section_asm_out_destructor (rtx, int);
 563 extern void default_named_section_asm_out_constructor (rtx, int);
 564 extern void default_ctor_section_asm_out_constructor (rtx, int);
 565
 566 extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
 567 extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
 568 extern void default_unique_section (tree, int);
 569 extern section *default_function_rodata_section (tree);
 570 extern section *default_no_function_rodata_section (tree);
 571 extern section *default_clone_table_section (void);
 572 extern section *default_select_rtx_section (enum machine_mode, rtx,
 573                                             unsigned HOST_WIDE_INT);
 574 extern section *default_elf_select_rtx_section (enum machine_mode, rtx,
 575                                                 unsigned HOST_WIDE_INT);
 576 extern void default_encode_section_info (tree, rtx, int);
 577 extern const char *default_strip_name_encoding (const char *);
 578 extern void default_asm_output_anchor (rtx);
 579 extern bool default_use_anchors_for_symbol_p (const_rtx);
 580 extern bool default_binds_local_p (const_tree);
 581 extern bool default_binds_local_p_1 (const_tree, int);
 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, enum 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 */