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) 1987-2016 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 with access mode MODE
 112    using machine-dependent assembler syntax.  */
 113 extern void output_address (machine_mode, 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 /* Get the function's name from a decl, as described by its RTL.  */
 182 extern const char *get_fnname_from_decl (tree);
 183
 184 /* Output assembler code for the constant pool of a function and associated
 185    with defining the name of the function.  DECL describes the function.
 186    NAME is the function's name.  For the constant pool, we use the current
 187    constant pool data.  */
 188 extern void assemble_start_function (tree, const char *);
 189
 190 /* Output assembler code associated with defining the size of the
 191    function.  DECL describes the function.  NAME is the function's name.  */
 192 extern void assemble_end_function (tree, const char *);
 193
 194 /* Assemble everything that is needed for a variable or function declaration.
 195    Not used for automatic variables, and not used for function definitions.
 196    Should not be called for variables of incomplete structure type.
 197
 198    TOP_LEVEL is nonzero if this variable has file scope.
 199    AT_END is nonzero if this is the special handling, at end of compilation,
 200    to define things that have had only tentative definitions.
 201    DONT_OUTPUT_DATA if nonzero means don't actually output the
 202    initial value (that will be done by the caller).  */
 203 extern void assemble_variable (tree, int, int, int);
 204
 205 /* Put the vtable verification constructor initialization function
 206    into the preinit array.  */
 207 extern void assemble_vtv_preinit_initializer (tree);
 208
 209 /* Assemble everything that is needed for a variable declaration that has
 210    no definition in the current translation unit.  */
 211 extern void assemble_undefined_decl (tree);
 212
 213 /* Compute the alignment of variable specified by DECL.
 214    DONT_OUTPUT_DATA is from assemble_variable.  */
 215 extern void align_variable (tree decl, bool dont_output_data);
 216
 217 /* Queue for outputting something to declare an external symbol to the
 218    assembler.  (Most assemblers don't need this, so we normally output
 219    nothing.)  Do nothing if DECL is not external.  */
 220 extern void assemble_external (tree);
 221
 222 /* Assemble code to leave SIZE bytes of zeros.  */
 223 extern void assemble_zeros (unsigned HOST_WIDE_INT);
 224
 225 /* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */
 226 extern void assemble_align (int);
 227
 228 /* Assemble a string constant with the specified C string as contents.  */
 229 extern void assemble_string (const char *, int);
 230
 231 /* Similar, for calling a library function FUN.  */
 232 extern void assemble_external_libcall (rtx);
 233
 234 /* Assemble a label named NAME.  */
 235 extern void assemble_label (FILE *, const char *);
 236
 237 /* Output to FILE (an assembly file) a reference to NAME.  If NAME
 238    starts with a *, the rest of NAME is output verbatim.  Otherwise
 239    NAME is transformed in a target-specific way (usually by the
 240    addition of an underscore).  */
 241 extern void assemble_name_raw (FILE *, const char *);
 242
 243 /* Like assemble_name_raw, but should be used when NAME might refer to
 244    an entity that is also represented as a tree (like a function or
 245    variable).  If NAME does refer to such an entity, that entity will
 246    be marked as referenced.  */
 247 extern void assemble_name (FILE *, const char *);
 248
 249 /* Return the assembler directive for creating a given kind of integer
 250    object.  SIZE is the number of bytes in the object and ALIGNED_P
 251    indicates whether it is known to be aligned.  Return NULL if the
 252    assembly dialect has no such directive.
 253
 254    The returned string should be printed at the start of a new line and
 255    be followed immediately by the object's initial value.  */
 256 extern const char *integer_asm_op (int, int);
 257
 258 /* Use directive OP to assemble an integer object X.  Print OP at the
 259    start of the line, followed immediately by the value of X.  */
 260 extern void assemble_integer_with_op (const char *, rtx);
 261
 262 /* The default implementation of the asm_out.integer target hook.  */
 263 extern bool default_assemble_integer (rtx, unsigned int, int);
 264
 265 /* Assemble the integer constant X into an object of SIZE bytes.  ALIGN is
 266    the alignment of the integer in bits.  Return 1 if we were able to output
 267    the constant, otherwise 0.  If FORCE is nonzero the constant must
 268    be outputable. */
 269 extern bool assemble_integer (rtx, unsigned, unsigned, int);
 270
 271 /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL)
 272    is NULL.  */
 273 extern section *get_named_text_section (tree, const char *, const char *);
 274
 275 /* An interface to assemble_integer for the common case in which a value is
 276    fully aligned and must be printed.  VALUE is the value of the integer
 277    object and SIZE is the number of bytes it contains.  */
 278 #define assemble_aligned_integer(SIZE, VALUE) \
 279   assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
 280
 281 /* Assemble the floating-point constant D into an object of size MODE.  ALIGN
 282    is the alignment of the constant in bits.  If REVERSE is true, D is output
 283    in reverse storage order.  */
 284 extern void assemble_real (REAL_VALUE_TYPE, machine_mode, unsigned,
 285                            bool = false);
 286
 287 /* Write the address of the entity given by SYMBOL to SEC.  */
 288 extern void assemble_addr_to_section (rtx, section *);
 289
 290 /* Return the size of the constant pool.  */
 291 extern int get_pool_size (void);
 292
 293 extern rtx_insn *peephole (rtx_insn *);
 294
 295 extern void output_shared_constant_pool (void);
 296
 297 extern void output_object_blocks (void);
 298
 299 extern void output_quoted_string (FILE *, const char *);
 300
 301 /* When outputting delayed branch sequences, this rtx holds the
 302    sequence being output.  It is null when no delayed branch
 303    sequence is being output, so it can be used as a test in the
 304    insn output code.
 305
 306    This variable is defined  in final.c.  */
 307 extern rtx_sequence *final_sequence;
 308
 309 /* The line number of the beginning of the current function.  Various
 310    md code needs this so that it can output relative linenumbers.  */
 311
 312 extern int sdb_begin_function_line;
 313
 314 /* File in which assembler code is being written.  */
 315
 316 #ifdef BUFSIZ
 317 extern FILE *asm_out_file;
 318 #endif
 319
 320 /* The first global object in the file.  */
 321 extern const char *first_global_object_name;
 322
 323 /* The first weak object in the file.  */
 324 extern const char *weak_global_object_name;
 325
 326 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern.  */
 327 extern rtx current_insn_predicate;
 328
 329 /* Last insn processed by final_scan_insn.  */
 330 extern rtx_insn *current_output_insn;
 331
 332 /* Nonzero while outputting an `asm' with operands.
 333    This means that inconsistencies are the user's fault, so don't die.
 334    The precise value is the insn being output, to pass to error_for_asm.  */
 335 extern const rtx_insn *this_is_asm_operands;
 336
 337 /* Carry information from ASM_DECLARE_OBJECT_NAME
 338    to ASM_FINISH_DECLARE_OBJECT.  */
 339 extern int size_directive_output;
 340 extern tree last_assemble_variable_decl;
 341
 342 extern bool first_function_block_is_cold;
 343
 344 /* Decide whether DECL needs to be in a writable section.
 345    RELOC is the same as for SELECT_SECTION.  */
 346 extern bool decl_readonly_section (const_tree, int);
 347
 348 /* This can be used to compute RELOC for the function above, when
 349    given a constant expression.  */
 350 extern int compute_reloc_for_constant (tree);
 351
 352 /* User label prefix in effect for this compilation.  */
 353 extern const char *user_label_prefix;
 354
 355 /* Default target function prologue and epilogue assembler output.  */
 356 extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
 357
 358 /* Default target function switched text sections.  */
 359 extern void default_function_switched_text_sections (FILE *, tree, bool);
 360
 361 /* Default target hook that outputs nothing to a stream.  */
 362 extern void no_asm_to_stream (FILE *);
 363
 364 /* Flags controlling properties of a section.  */
 365 #define SECTION_ENTSIZE  0x000ff        /* entity size in section */
 366 #define SECTION_CODE     0x00100        /* contains code */
 367 #define SECTION_WRITE    0x00200        /* data is writable */
 368 #define SECTION_DEBUG    0x00400        /* contains debug data */
 369 #define SECTION_LINKONCE 0x00800        /* is linkonce */
 370 #define SECTION_SMALL    0x01000        /* contains "small data" */
 371 #define SECTION_BSS      0x02000        /* contains zeros only */
 372 #define SECTION_FORGET   0x04000        /* forget that we've entered the section */
 373 #define SECTION_MERGE    0x08000        /* contains mergeable data */
 374 #define SECTION_STRINGS  0x10000        /* contains zero terminated strings without
 375                                            embedded zeros */
 376 #define SECTION_OVERRIDE 0x20000        /* allow override of default flags */
 377 #define SECTION_TLS      0x40000        /* contains thread-local storage */
 378 #define SECTION_NOTYPE   0x80000        /* don't output @progbits */
 379 #define SECTION_DECLARED 0x100000       /* section has been used */
 380 #define SECTION_STYLE_MASK 0x600000     /* bits used for SECTION_STYLE */
 381 #define SECTION_COMMON   0x800000       /* contains common data */
 382 #define SECTION_RELRO    0x1000000      /* data is readonly after relocation processing */
 383 #define SECTION_EXCLUDE  0x2000000      /* discarded by the linker */
 384 #define SECTION_MACH_DEP 0x4000000      /* subsequent bits reserved for target */
 385
 386 /* This SECTION_STYLE is used for unnamed sections that we can switch
 387    to using a special assembler directive.  */
 388 #define SECTION_UNNAMED  0x000000
 389
 390 /* This SECTION_STYLE is used for named sections that we can switch
 391    to using a general section directive.  */
 392 #define SECTION_NAMED    0x200000
 393
 394 /* This SECTION_STYLE is used for sections that we cannot switch to at
 395    all.  The choice of section is implied by the directive that we use
 396    to declare the object.  */
 397 #define SECTION_NOSWITCH 0x400000
 398
 399 /* A helper function for default_elf_select_section and
 400    default_elf_unique_section.  Categorizes the DECL.  */
 401
 402 enum section_category
 403 {
 404   SECCAT_TEXT,
 405
 406   SECCAT_RODATA,
 407   SECCAT_RODATA_MERGE_STR,
 408   SECCAT_RODATA_MERGE_STR_INIT,
 409   SECCAT_RODATA_MERGE_CONST,
 410   SECCAT_SRODATA,
 411
 412   SECCAT_DATA,
 413
 414   /* To optimize loading of shared programs, define following subsections
 415      of data section:
 416         _REL    Contains data that has relocations, so they get grouped
 417                 together and dynamic linker will visit fewer pages in memory.
 418         _RO     Contains data that is otherwise read-only.  This is useful
 419                 with prelinking as most relocations won't be dynamically
 420                 linked and thus stay read only.
 421         _LOCAL  Marks data containing relocations only to local objects.
 422                 These relocations will get fully resolved by prelinking.  */
 423   SECCAT_DATA_REL,
 424   SECCAT_DATA_REL_LOCAL,
 425   SECCAT_DATA_REL_RO,
 426   SECCAT_DATA_REL_RO_LOCAL,
 427
 428   SECCAT_SDATA,
 429   SECCAT_TDATA,
 430
 431   SECCAT_BSS,
 432   SECCAT_SBSS,
 433   SECCAT_TBSS
 434 };
 435
 436 /* Information that is provided by all instances of the section type.  */
 437 struct GTY(()) section_common {
 438   /* The set of SECTION_* flags that apply to this section.  */
 439   unsigned int flags;
 440 };
 441
 442 /* Information about a SECTION_NAMED section.  */
 443 struct GTY(()) named_section {
 444   struct section_common common;
 445
 446   /* The name of the section.  */
 447   const char *name;
 448
 449   /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
 450      section is associated.  */
 451   tree decl;
 452 };
 453
 454 /* A callback that writes the assembly code for switching to an unnamed
 455    section.  The argument provides callback-specific data.  */
 456 typedef void (*unnamed_section_callback) (const void *);
 457
 458 /* Information about a SECTION_UNNAMED section.  */
 459 struct GTY(()) unnamed_section {
 460   struct section_common common;
 461
 462   /* The callback used to switch to the section, and the data that
 463      should be passed to the callback.  */
 464   unnamed_section_callback GTY ((skip)) callback;
 465   const void *GTY ((skip)) data;
 466
 467   /* The next entry in the chain of unnamed sections.  */
 468   section *next;
 469 };
 470
 471 /* A callback that writes the assembly code for a decl in a
 472    SECTION_NOSWITCH section.  DECL is the decl that should be assembled
 473    and NAME is the name of its SYMBOL_REF.  SIZE is the size of the decl
 474    in bytes and ROUNDED is that size rounded up to the next
 475    BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
 476
 477    Return true if the callback used DECL_ALIGN to set the object's
 478    alignment.  A false return value implies that we are relying
 479    on the rounded size to align the decl.  */
 480 typedef bool (*noswitch_section_callback) (tree decl, const char *name,
 481                                            unsigned HOST_WIDE_INT size,
 482                                            unsigned HOST_WIDE_INT rounded);
 483
 484 /* Information about a SECTION_NOSWITCH section.  */
 485 struct GTY(()) noswitch_section {
 486   struct section_common common;
 487
 488   /* The callback used to assemble decls in this section.  */
 489   noswitch_section_callback GTY ((skip)) callback;
 490 };
 491
 492 /* Information about a section, which may be named or unnamed.  */
 493 union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section {
 494   struct section_common GTY ((skip)) common;
 495   struct named_section GTY ((tag ("SECTION_NAMED"))) named;
 496   struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
 497   struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
 498 };
 499
 500 /* Return the style of section SECT.  */
 501 #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
 502
 503 struct object_block;
 504
 505 /* Special well-known sections.  */
 506 extern GTY(()) section *text_section;
 507 extern GTY(()) section *data_section;
 508 extern GTY(()) section *readonly_data_section;
 509 extern GTY(()) section *sdata_section;
 510 extern GTY(()) section *ctors_section;
 511 extern GTY(()) section *dtors_section;
 512 extern GTY(()) section *bss_section;
 513 extern GTY(()) section *sbss_section;
 514 extern GTY(()) section *exception_section;
 515 extern GTY(()) section *eh_frame_section;
 516 extern GTY(()) section *tls_comm_section;
 517 extern GTY(()) section *comm_section;
 518 extern GTY(()) section *lcomm_section;
 519 extern GTY(()) section *bss_noswitch_section;
 520
 521 extern GTY(()) section *in_section;
 522 extern GTY(()) bool in_cold_section_p;
 523
 524 extern section *get_unnamed_section (unsigned int, void (*) (const void *),
 525                                      const void *);
 526 extern section *get_section (const char *, unsigned int, tree);
 527 extern section *get_named_section (tree, const char *, int);
 528 extern section *get_variable_section (tree, bool);
 529 extern void place_block_symbol (rtx);
 530 extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
 531                                enum tls_model);
 532 extern section *mergeable_constant_section (machine_mode,
 533                                             unsigned HOST_WIDE_INT,
 534                                             unsigned int);
 535 extern section *function_section (tree);
 536 extern section *unlikely_text_section (void);
 537 extern section *current_function_section (void);
 538
 539 /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
 540    not) section for PRIORITY.  */
 541 extern section *get_cdtor_priority_section (int, bool);
 542
 543 extern bool unlikely_text_section_p (section *);
 544 extern void switch_to_section (section *);
 545 extern void output_section_asm_op (const void *);
 546
 547 extern void record_tm_clone_pair (tree, tree);
 548 extern void finish_tm_clone_pairs (void);
 549 extern tree get_tm_clone_pair (tree);
 550
 551 extern void default_asm_output_source_filename (FILE *, const char *);
 552 extern void output_file_directive (FILE *, const char *);
 553
 554 extern unsigned int default_section_type_flags (tree, const char *, int);
 555
 556 extern bool have_global_bss_p (void);
 557 extern bool bss_initializer_p (const_tree);
 558
 559 extern void default_no_named_section (const char *, unsigned int, tree);
 560 extern void default_elf_asm_named_section (const char *, unsigned int, tree);
 561 extern enum section_category categorize_decl_for_section (const_tree, int);
 562 extern void default_coff_asm_named_section (const char *, unsigned int, tree);
 563 extern void default_pe_asm_named_section (const char *, unsigned int, tree);
 564
 565 extern void default_named_section_asm_out_destructor (rtx, int);
 566 extern void default_dtor_section_asm_out_destructor (rtx, int);
 567 extern void default_named_section_asm_out_constructor (rtx, int);
 568 extern void default_ctor_section_asm_out_constructor (rtx, int);
 569
 570 extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
 571 extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
 572 extern void default_unique_section (tree, int);
 573 extern section *default_function_rodata_section (tree);
 574 extern section *default_no_function_rodata_section (tree);
 575 extern section *default_clone_table_section (void);
 576 extern section *default_select_rtx_section (machine_mode, rtx,
 577                                             unsigned HOST_WIDE_INT);
 578 extern section *default_elf_select_rtx_section (machine_mode, rtx,
 579                                                 unsigned HOST_WIDE_INT);
 580 extern void default_encode_section_info (tree, rtx, int);
 581 extern const char *default_strip_name_encoding (const char *);
 582 extern void default_asm_output_anchor (rtx);
 583 extern bool default_use_anchors_for_symbol_p (const_rtx);
 584 extern bool default_binds_local_p (const_tree);
 585 extern bool default_binds_local_p_1 (const_tree, int);
 586 extern bool default_binds_local_p_2 (const_tree);
 587 extern bool default_binds_local_p_3 (const_tree, bool, bool, bool, bool);
 588 extern void default_globalize_label (FILE *, const char *);
 589 extern void default_globalize_decl_name (FILE *, tree);
 590 extern void default_emit_unwind_label (FILE *, tree, int, int);
 591 extern void default_emit_except_table_label (FILE *);
 592 extern void default_generate_internal_label (char *, const char *,
 593                                              unsigned long);
 594 extern void default_internal_label (FILE *, const char *, unsigned long);
 595 extern void default_asm_declare_constant_name (FILE *, const char *,
 596                                                const_tree, HOST_WIDE_INT);
 597 extern void default_file_start (void);
 598 extern void file_end_indicate_exec_stack (void);
 599 extern void file_end_indicate_split_stack (void);
 600
 601 extern void default_elf_asm_output_external (FILE *file, tree,
 602                                              const char *);
 603 extern void default_elf_asm_output_limited_string (FILE *, const char *);
 604 extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int);
 605 extern void default_elf_internal_label (FILE *, const char *, unsigned long);
 606
 607 extern void default_elf_init_array_asm_out_constructor (rtx, int);
 608 extern void default_elf_fini_array_asm_out_destructor (rtx, int);
 609 extern int maybe_assemble_visibility (tree);
 610
 611 extern int default_address_cost (rtx, machine_mode, addr_space_t, bool);
 612
 613 /* Output stack usage information.  */
 614 extern void output_stack_usage (void);
 615
 616 #endif /* ! GCC_OUTPUT_H */