gcc/output.h

   1 /* Declarations for insn-output.c.  These functions are defined in recog.c,
   2    final.c, and varasm.c.
   3    Copyright (C) 1987, 1991, 1994, 1997, 1998,
   4    1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 2, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to the Free
  20 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  21 02110-1301, USA.  */
  22
  23 #ifndef GCC_OUTPUT_H
  24 #define GCC_OUTPUT_H
  25
  26 /* Compute branch alignments based on frequency information in the CFG.  */
  27 extern void compute_alignments (void);
  28
  29 /* Initialize data in final at the beginning of a compilation.  */
  30 extern void init_final (const char *);
  31
  32 /* Enable APP processing of subsequent output.
  33    Used before the output from an `asm' statement.  */
  34 extern void app_enable (void);
  35
  36 /* Disable APP processing of subsequent output.
  37    Called from varasm.c before most kinds of output.  */
  38 extern void app_disable (void);
  39
  40 /* Return the number of slots filled in the current
  41    delayed branch sequence (we don't count the insn needing the
  42    delay slot).   Zero if not in a delayed branch sequence.  */
  43 extern int dbr_sequence_length (void);
  44
  45 /* Indicate that branch shortening hasn't yet been done.  */
  46 extern void init_insn_lengths (void);
  47
  48 /* Obtain the current length of an insn.  If branch shortening has been done,
  49    get its actual length.  Otherwise, get its maximum length.  */
  50 extern int get_attr_length (rtx);
  51
  52 /* Obtain the current length of an insn.  If branch shortening has been done,
  53    get its actual length.  Otherwise, get its minimum length.  */
  54 extern int get_attr_min_length (rtx);
  55
  56 /* Make a pass over all insns and compute their actual lengths by shortening
  57    any branches of variable length if possible.  */
  58 extern void shorten_branches (rtx);
  59
  60 /* Output assembler code for the start of a function,
  61    and initialize some of the variables in this file
  62    for the new function.  The label for the function and associated
  63    assembler pseudo-ops have already been output in
  64    `assemble_start_function'.  */
  65 extern void final_start_function (rtx, FILE *, int);
  66
  67 /* Output assembler code for the end of a function.
  68    For clarity, args are same as those of `final_start_function'
  69    even though not all of them are needed.  */
  70 extern void final_end_function (void);
  71
  72 /* Output assembler code for some insns: all or part of a function.  */
  73 extern void final (rtx, FILE *, int);
  74
  75 /* The final scan for one insn, INSN.  Args are same as in `final', except
  76    that INSN is the insn being scanned.  Value returned is the next insn to
  77    be scanned.  */
  78 extern rtx final_scan_insn (rtx, FILE *, int, int, int *);
  79
  80 /* Replace a SUBREG with a REG or a MEM, based on the thing it is a
  81    subreg of.  */
  82 extern rtx alter_subreg (rtx *);
  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);
  96
  97 /* Find the alignment associated with a CODE_LABEL.
  98    Defined in final.c.  */
  99 extern int 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 /* Print a memory reference operand for address X
 105    using machine-dependent assembler syntax.  */
 106 extern void output_address (rtx);
 107
 108 /* Print an integer constant expression in assembler syntax.
 109    Addition and subtraction are the only arithmetic
 110    that may appear in these expressions.  */
 111 extern void output_addr_const (FILE *, rtx);
 112
 113 /* Output a string of assembler code, substituting numbers, strings
 114    and fixed syntactic prefixes.  */
 115 #if GCC_VERSION >= 3004
 116 #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
 117 /* This is a magic identifier which allows GCC to figure out the type
 118    of HOST_WIDE_INT for %wd specifier checks.  You must issue this
 119    typedef before using the __asm_fprintf__ format attribute.  */
 120 typedef HOST_WIDE_INT __gcc_host_wide_int__;
 121 #else
 122 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
 123 #endif
 124
 125 extern void asm_fprintf (FILE *file, const char *p, ...)
 126      ATTRIBUTE_ASM_FPRINTF(2, 3);
 127
 128 /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
 129    words.  */
 130 extern void split_double (rtx, rtx *, rtx *);
 131
 132 /* Return nonzero if this function has no function calls.  */
 133 extern int leaf_function_p (void);
 134
 135 /* Return 1 if branch is a forward branch.
 136    Uses insn_shuid array, so it works only in the final pass.  May be used by
 137    output templates to add branch prediction hints, for example.  */
 138 extern int final_forward_branch_p (rtx);
 139
 140 /* Return 1 if this function uses only the registers that can be
 141    safely renumbered.  */
 142 extern int only_leaf_regs_used (void);
 143
 144 /* Scan IN_RTX and its subexpressions, and renumber all regs into those
 145    available in leaf functions.  */
 146 extern void leaf_renumber_regs_insn (rtx);
 147
 148 /* Locate the proper template for the given insn-code.  */
 149 extern const char *get_insn_template (int, rtx);
 150
 151 /* Functions in flow.c */
 152 extern int regno_clobbered_at_setjmp (int);
 153
 154 /* Functions in varasm.c.  */
 155
 156 /* Tell assembler to switch to text section.  */
 157 extern void text_section (void);
 158
 159 /* Tell assembler to switch to unlikely-to-be-executed text section.  */
 160 extern void unlikely_text_section (void);
 161
 162 /* Tell assembler to switch to data section.  */
 163 extern void data_section (void);
 164
 165 /* Tell assembler to switch to read-only data section.  This is normally
 166    the text section.  */
 167 extern void readonly_data_section (void);
 168
 169 /* Determine if we're in the text section.  */
 170 extern int in_text_section (void);
 171
 172 /* Determine if we're in the unlikely-to-be-executed text section.  */
 173 extern int in_unlikely_text_section (void);
 174
 175 #ifdef CTORS_SECTION_ASM_OP
 176 extern void ctors_section (void);
 177 #endif
 178
 179 #ifdef DTORS_SECTION_ASM_OP
 180 extern void dtors_section (void);
 181 #endif
 182
 183 #ifdef BSS_SECTION_ASM_OP
 184 extern void bss_section (void);
 185 #endif
 186
 187 #ifdef INIT_SECTION_ASM_OP
 188 extern void init_section (void);
 189 #endif
 190
 191 #ifdef FINI_SECTION_ASM_OP
 192 extern void fini_section (void);
 193 #endif
 194
 195 #ifdef EXPORTS_SECTION_ASM_OP
 196 extern void exports_section (void);
 197 #endif
 198
 199 #ifdef DRECTVE_SECTION_ASM_OP
 200 extern void drectve_section (void);
 201 #endif
 202
 203 #ifdef SDATA_SECTION_ASM_OP
 204 extern void sdata_section (void);
 205 #endif
 206
 207 /* Tell assembler to change to section NAME for DECL.
 208    If DECL is NULL, just switch to section NAME.
 209    If NAME is NULL, get the name from DECL.
 210    If RELOC is 1, the initializer for DECL contains relocs.  */
 211 extern void named_section (tree, const char *, int);
 212
 213 /* Tell assembler to switch to the section for function DECL.  */
 214 extern void function_section (tree);
 215
 216 /* Tell assembler to switch to the most recently used text section.  */
 217 extern void current_function_section (tree);
 218
 219 /* Tell assembler to switch to the section for string merging.  */
 220 extern void mergeable_string_section (tree, unsigned HOST_WIDE_INT,
 221                                       unsigned int);
 222
 223 /* Tell assembler to switch to the section for constant merging.  */
 224 extern void mergeable_constant_section (enum machine_mode,
 225                                         unsigned HOST_WIDE_INT, unsigned int);
 226
 227 /* Declare DECL to be a weak symbol.  */
 228 extern void declare_weak (tree);
 229 /* Merge weak status.  */
 230 extern void merge_weak (tree, tree);
 231
 232 /* Emit any pending weak declarations.  */
 233 extern void weak_finish (void);
 234
 235 /* Decode an `asm' spec for a declaration as a register name.
 236    Return the register number, or -1 if nothing specified,
 237    or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
 238    or -3 if ASMSPEC is `cc' and is not recognized,
 239    or -4 if ASMSPEC is `memory' and is not recognized.
 240    Accept an exact spelling or a decimal number.
 241    Prefixes such as % are optional.  */
 242 extern int decode_reg_name (const char *);
 243
 244 /* Make the rtl for variable VAR be volatile.
 245    Use this only for static variables.  */
 246 extern void make_var_volatile (tree);
 247
 248 extern void assemble_alias (tree, tree);
 249
 250 extern void default_assemble_visibility (tree, int);
 251
 252 /* Output a string of literal assembler code
 253    for an `asm' keyword used between functions.  */
 254 extern void assemble_asm (tree);
 255
 256 /* Output assembler code for the constant pool of a function and associated
 257    with defining the name of the function.  DECL describes the function.
 258    NAME is the function's name.  For the constant pool, we use the current
 259    constant pool data.  */
 260 extern void assemble_start_function (tree, const char *);
 261
 262 /* Output assembler code associated with defining the size of the
 263    function.  DECL describes the function.  NAME is the function's name.  */
 264 extern void assemble_end_function (tree, const char *);
 265
 266 /* Assemble everything that is needed for a variable or function declaration.
 267    Not used for automatic variables, and not used for function definitions.
 268    Should not be called for variables of incomplete structure type.
 269
 270    TOP_LEVEL is nonzero if this variable has file scope.
 271    AT_END is nonzero if this is the special handling, at end of compilation,
 272    to define things that have had only tentative definitions.
 273    DONT_OUTPUT_DATA if nonzero means don't actually output the
 274    initial value (that will be done by the caller).  */
 275 extern void assemble_variable (tree, int, int, int);
 276
 277 /* Output something to declare an external symbol to the assembler.
 278    (Most assemblers don't need this, so we normally output nothing.)
 279    Do nothing if DECL is not external.  */
 280 extern void assemble_external (tree);
 281
 282 /* Assemble code to leave SIZE bytes of zeros.  */
 283 extern void assemble_zeros (unsigned HOST_WIDE_INT);
 284
 285 /* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */
 286 extern void assemble_align (int);
 287
 288 /* Assemble a string constant with the specified C string as contents.  */
 289 extern void assemble_string (const char *, int);
 290
 291 /* Similar, for calling a library function FUN.  */
 292 extern void assemble_external_libcall (rtx);
 293
 294 /* Assemble a label named NAME.  */
 295 extern void assemble_label (const char *);
 296
 297 /* Output to FILE (an assembly file) a reference to NAME.  If NAME
 298    starts with a *, the rest of NAME is output verbatim.  Otherwise
 299    NAME is transformed in a target-specific way (usually by the
 300    addition of an underscore).  */
 301 extern void assemble_name_raw (FILE *, const char *);
 302
 303 /* Like assemble_name_raw, but should be used when NAME might refer to
 304    an entity that is also represented as a tree (like a function or
 305    variable).  If NAME does refer to such an entity, that entity will
 306    be marked as referenced.  */
 307 extern void assemble_name (FILE *, const char *);
 308
 309 /* Return the assembler directive for creating a given kind of integer
 310    object.  SIZE is the number of bytes in the object and ALIGNED_P
 311    indicates whether it is known to be aligned.  Return NULL if the
 312    assembly dialect has no such directive.
 313
 314    The returned string should be printed at the start of a new line and
 315    be followed immediately by the object's initial value.  */
 316 extern const char *integer_asm_op (int, int);
 317
 318 /* Use directive OP to assemble an integer object X.  Print OP at the
 319    start of the line, followed immediately by the value of X.  */
 320 extern void assemble_integer_with_op (const char *, rtx);
 321
 322 /* The default implementation of the asm_out.integer target hook.  */
 323 extern bool default_assemble_integer (rtx, unsigned int, int);
 324
 325 /* Assemble the integer constant X into an object of SIZE bytes.  ALIGN is
 326    the alignment of the integer in bits.  Return 1 if we were able to output
 327    the constant, otherwise 0.  If FORCE is nonzero the constant must
 328    be outputable. */
 329 extern bool assemble_integer (rtx, unsigned, unsigned, int);
 330
 331 /* An interface to assemble_integer for the common case in which a value is
 332    fully aligned and must be printed.  VALUE is the value of the integer
 333    object and SIZE is the number of bytes it contains.  */
 334 #define assemble_aligned_integer(SIZE, VALUE) \
 335   assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
 336
 337 #ifdef REAL_VALUE_TYPE_SIZE
 338 /* Assemble the floating-point constant D into an object of size MODE.  */
 339 extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
 340 #endif
 341
 342 /* Return the size of the constant pool.  */
 343 extern int get_pool_size (void);
 344
 345 #ifdef HAVE_peephole
 346 extern rtx peephole (rtx);
 347 #endif
 348
 349 /* Write all the constants in the constant pool.  */
 350 extern void output_constant_pool (const char *, tree);
 351
 352 /* Return nonzero if VALUE is a valid constant-valued expression
 353    for use in initializing a static variable; one that can be an
 354    element of a "constant" initializer.
 355
 356    Return null_pointer_node if the value is absolute;
 357    if it is relocatable, return the variable that determines the relocation.
 358    We assume that VALUE has been folded as much as possible;
 359    therefore, we do not need to check for such things as
 360    arithmetic-combinations of integers.  */
 361 extern tree initializer_constant_valid_p (tree, tree);
 362
 363 /* Output assembler code for constant EXP to FILE, with no label.
 364    This includes the pseudo-op such as ".int" or ".byte", and a newline.
 365    Assumes output_addressed_constants has been done on EXP already.
 366
 367    Generate exactly SIZE bytes of assembler data, padding at the end
 368    with zeros if necessary.  SIZE must always be specified.
 369
 370    ALIGN is the alignment in bits that may be assumed for the data.  */
 371 extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int);
 372
 373 /* When outputting delayed branch sequences, this rtx holds the
 374    sequence being output.  It is null when no delayed branch
 375    sequence is being output, so it can be used as a test in the
 376    insn output code.
 377
 378    This variable is defined  in final.c.  */
 379 extern rtx final_sequence;
 380
 381 /* The line number of the beginning of the current function.  Various
 382    md code needs this so that it can output relative linenumbers.  */
 383
 384 #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers.  */
 385 extern int sdb_begin_function_line;
 386 #endif
 387
 388 /* File in which assembler code is being written.  */
 389
 390 #ifdef BUFSIZ
 391 extern FILE *asm_out_file;
 392 #endif
 393
 394 /* The first global object in the file.  */
 395 extern const char *first_global_object_name;
 396
 397 /* The first weak object in the file.  */
 398 extern const char *weak_global_object_name;
 399
 400 /* Nonzero if function being compiled doesn't contain any calls
 401    (ignoring the prologue and epilogue).  This is set prior to
 402    local register allocation and is valid for the remaining
 403    compiler passes.  */
 404
 405 extern int current_function_is_leaf;
 406
 407 /* Nonzero if function being compiled doesn't modify the stack pointer
 408    (ignoring the prologue and epilogue).  This is only valid after
 409    life_analysis has run.  */
 410
 411 extern int current_function_sp_is_unchanging;
 412
 413 /* Nonzero if the function being compiled is a leaf function which only
 414    uses leaf registers.  This is valid after reload (specifically after
 415    sched2) and is useful only if the port defines LEAF_REGISTERS.  */
 416
 417 extern int current_function_uses_only_leaf_regs;
 418
 419 /* Default file in which to dump debug output.  */
 420
 421 #ifdef BUFSIZ
 422 extern FILE *dump_file;
 423 #endif
 424
 425 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern.  */
 426 extern rtx current_insn_predicate;
 427
 428 /* Last insn processed by final_scan_insn.  */
 429 extern rtx current_output_insn;
 430
 431 /* Nonzero while outputting an `asm' with operands.
 432    This means that inconsistencies are the user's fault, so don't die.
 433    The precise value is the insn being output, to pass to error_for_asm.  */
 434 extern rtx this_is_asm_operands;
 435
 436 /* Carry information from ASM_DECLARE_OBJECT_NAME
 437    to ASM_FINISH_DECLARE_OBJECT.  */
 438 extern int size_directive_output;
 439 extern tree last_assemble_variable_decl;
 440
 441 enum in_section { no_section, in_text, in_unlikely_executed_text, in_data,
 442                  in_named
 443 #ifdef BSS_SECTION_ASM_OP
 444   , in_bss
 445 #endif
 446 #ifdef CTORS_SECTION_ASM_OP
 447   , in_ctors
 448 #endif
 449 #ifdef DTORS_SECTION_ASM_OP
 450   , in_dtors
 451 #endif
 452 #ifdef READONLY_DATA_SECTION_ASM_OP
 453   , in_readonly_data
 454 #endif
 455 #ifdef EXTRA_SECTIONS
 456   , EXTRA_SECTIONS
 457 #endif
 458 };
 459
 460 extern const char *last_text_section_name;
 461 extern enum in_section last_text_section;
 462 extern bool first_function_block_is_cold;
 463
 464 /* Decide whether DECL needs to be in a writable section.
 465    RELOC is the same as for SELECT_SECTION.  */
 466 extern bool decl_readonly_section (tree, int);
 467 extern bool decl_readonly_section_1 (tree, int, int);
 468
 469 /* This can be used to compute RELOC for the function above, when
 470    given a constant expression.  */
 471 extern int compute_reloc_for_constant (tree);
 472
 473 /* User label prefix in effect for this compilation.  */
 474 extern const char *user_label_prefix;
 475
 476 /* Default target function prologue and epilogue assembler output.  */
 477 extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
 478
 479 /* Tell assembler to switch to the section for the exception table.  */
 480 extern void default_exception_section (void);
 481
 482 /* Tell assembler to switch to the section for the EH frames.  */
 483 extern void named_section_eh_frame_section (void);
 484 extern void collect2_eh_frame_section (void);
 485 extern void default_eh_frame_section (void);
 486
 487 /* Default target hook that outputs nothing to a stream.  */
 488 extern void no_asm_to_stream (FILE *);
 489
 490 /* Flags controlling properties of a section.  */
 491 #define SECTION_ENTSIZE  0x000ff        /* entity size in section */
 492 #define SECTION_CODE     0x00100        /* contains code */
 493 #define SECTION_WRITE    0x00200        /* data is writable */
 494 #define SECTION_DEBUG    0x00400        /* contains debug data */
 495 #define SECTION_LINKONCE 0x00800        /* is linkonce */
 496 #define SECTION_SMALL    0x01000        /* contains "small data" */
 497 #define SECTION_BSS      0x02000        /* contains zeros only */
 498 #define SECTION_FORGET   0x04000        /* forget that we've entered the section */
 499 #define SECTION_MERGE    0x08000        /* contains mergeable data */
 500 #define SECTION_STRINGS  0x10000        /* contains zero terminated strings without
 501                                            embedded zeros */
 502 #define SECTION_OVERRIDE 0x20000        /* allow override of default flags */
 503 #define SECTION_TLS      0x40000        /* contains thread-local storage */
 504 #define SECTION_NOTYPE   0x80000        /* don't output @progbits */
 505 #define SECTION_MACH_DEP 0x100000       /* subsequent bits reserved for target */
 506
 507 /* A helper function for default_elf_select_section and
 508    default_elf_unique_section.  Categorizes the DECL.  */
 509
 510 enum section_category
 511 {
 512   SECCAT_TEXT,
 513
 514   SECCAT_RODATA,
 515   SECCAT_RODATA_MERGE_STR,
 516   SECCAT_RODATA_MERGE_STR_INIT,
 517   SECCAT_RODATA_MERGE_CONST,
 518   SECCAT_SRODATA,
 519
 520   SECCAT_DATA,
 521
 522   /* To optimize loading of shared programs, define following subsections
 523      of data section:
 524         _REL    Contains data that has relocations, so they get grouped
 525                 together and dynamic linker will visit fewer pages in memory.
 526         _RO     Contains data that is otherwise read-only.  This is useful
 527                 with prelinking as most relocations won't be dynamically
 528                 linked and thus stay read only.
 529         _LOCAL  Marks data containing relocations only to local objects.
 530                 These relocations will get fully resolved by prelinking.  */
 531   SECCAT_DATA_REL,
 532   SECCAT_DATA_REL_LOCAL,
 533   SECCAT_DATA_REL_RO,
 534   SECCAT_DATA_REL_RO_LOCAL,
 535
 536   SECCAT_SDATA,
 537   SECCAT_TDATA,
 538
 539   SECCAT_BSS,
 540   SECCAT_SBSS,
 541   SECCAT_TBSS
 542 };
 543
 544
 545 extern bool set_named_section_flags (const char *, unsigned int);
 546 #define named_section_flags(NAME, FLAGS) \
 547   named_section_real((NAME), (FLAGS), /*decl=*/NULL_TREE)
 548 extern void named_section_real (const char *, unsigned int, tree);
 549 extern bool named_section_first_declaration (const char *);
 550 extern unsigned int default_section_type_flags (tree, const char *, int);
 551 extern unsigned int default_section_type_flags_1 (tree, const char *, int, int);
 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 (tree, int, 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_stabs_asm_out_destructor (rtx, int);
 560 extern void default_named_section_asm_out_destructor (rtx, int);
 561 extern void default_dtor_section_asm_out_destructor (rtx, int);
 562 extern void default_stabs_asm_out_constructor (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 void default_select_section (tree, int, unsigned HOST_WIDE_INT);
 567 extern void default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
 568 extern void default_elf_select_section_1 (tree, int,
 569                                           unsigned HOST_WIDE_INT, int);
 570 extern void default_unique_section (tree, int);
 571 extern void default_unique_section_1 (tree, int, int);
 572 extern void default_function_rodata_section (tree);
 573 extern void default_no_function_rodata_section (tree);
 574 extern void default_select_rtx_section (enum machine_mode, rtx,
 575                                         unsigned HOST_WIDE_INT);
 576 extern void default_elf_select_rtx_section (enum machine_mode, rtx,
 577                                             unsigned HOST_WIDE_INT);
 578 extern void default_encode_section_info (tree, rtx, int);
 579 extern const char *default_strip_name_encoding (const char *);
 580 extern bool default_binds_local_p (tree);
 581 extern bool default_binds_local_p_1 (tree, int);
 582 extern void default_globalize_label (FILE *, const char *);
 583 extern void default_emit_unwind_label (FILE *, tree, int, int);
 584 extern void default_internal_label (FILE *, const char *, unsigned long);
 585 extern void default_file_start (void);
 586 extern void file_end_indicate_exec_stack (void);
 587 extern bool default_valid_pointer_mode (enum machine_mode);
 588
 589 extern int default_address_cost (rtx);
 590
 591 /* dbxout helper functions */
 592 #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
 593
 594 extern void dbxout_int (int);
 595 extern void dbxout_stabd (int, int);
 596 extern void dbxout_begin_stabn (int);
 597 extern void dbxout_begin_stabn_sline (int);
 598 extern void dbxout_begin_empty_stabs (int);
 599 extern void dbxout_begin_simple_stabs (const char *, int);
 600 extern void dbxout_begin_simple_stabs_desc (const char *, int, int);
 601
 602 extern void dbxout_stab_value_zero (void);
 603 extern void dbxout_stab_value_label (const char *);
 604 extern void dbxout_stab_value_label_diff (const char *, const char *);
 605 extern void dbxout_stab_value_internal_label (const char *, int *);
 606 extern void dbxout_stab_value_internal_label_diff (const char *, int *,
 607                                                    const char *);
 608
 609 #endif
 610
 611 #endif /* ! GCC_OUTPUT_H */