PR fortran/40539 Document LOGICAL representation
[official-gcc.git] / gcc / output.h
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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, 1999, 2000, 2001, 2002,
4 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
6 This file is part of GCC.
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 3, or (at your option) any later
11 version.
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.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #ifndef GCC_OUTPUT_H
23 #define GCC_OUTPUT_H
25 /* Initialize data in final at the beginning of a compilation. */
26 extern void init_final (const char *);
28 /* Enable APP processing of subsequent output.
29 Used before the output from an `asm' statement. */
30 extern void app_enable (void);
32 /* Disable APP processing of subsequent output.
33 Called from varasm.c before most kinds of output. */
34 extern void app_disable (void);
36 /* Return the number of slots filled in the current
37 delayed branch sequence (we don't count the insn needing the
38 delay slot). Zero if not in a delayed branch sequence. */
39 extern int dbr_sequence_length (void);
41 /* Indicate that branch shortening hasn't yet been done. */
42 extern void init_insn_lengths (void);
44 /* Obtain the current length of an insn. If branch shortening has been done,
45 get its actual length. Otherwise, get its maximum length. */
46 extern int get_attr_length (rtx);
48 /* Obtain the current length of an insn. If branch shortening has been done,
49 get its actual length. Otherwise, get its minimum length. */
50 extern int get_attr_min_length (rtx);
52 /* Make a pass over all insns and compute their actual lengths by shortening
53 any branches of variable length if possible. */
54 extern void shorten_branches (rtx);
56 /* Output assembler code for the start of a function,
57 and initialize some of the variables in this file
58 for the new function. The label for the function and associated
59 assembler pseudo-ops have already been output in
60 `assemble_start_function'. */
61 extern void final_start_function (rtx, FILE *, int);
63 /* Output assembler code for the end of a function.
64 For clarity, args are same as those of `final_start_function'
65 even though not all of them are needed. */
66 extern void final_end_function (void);
68 /* Output assembler code for some insns: all or part of a function. */
69 extern void final (rtx, FILE *, int);
71 /* The final scan for one insn, INSN. Args are same as in `final', except
72 that INSN is the insn being scanned. Value returned is the next insn to
73 be scanned. */
74 extern rtx final_scan_insn (rtx, FILE *, int, int, int *);
76 /* Replace a SUBREG with a REG or a MEM, based on the thing it is a
77 subreg of. */
78 extern rtx alter_subreg (rtx *);
80 /* Report inconsistency between the assembler template and the operands.
81 In an `asm', it's the user's fault; otherwise, the compiler's fault. */
82 extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1;
84 /* Output a string of assembler code, substituting insn operands.
85 Defined in final.c. */
86 extern void output_asm_insn (const char *, rtx *);
88 /* Compute a worst-case reference address of a branch so that it
89 can be safely used in the presence of aligned labels.
90 Defined in final.c. */
91 extern int insn_current_reference_address (rtx);
93 /* Find the alignment associated with a CODE_LABEL.
94 Defined in final.c. */
95 extern int label_to_alignment (rtx);
97 /* Find the alignment maximum skip associated with a CODE_LABEL.
98 Defined in final.c. */
99 extern int label_to_max_skip (rtx);
101 /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
102 extern void output_asm_label (rtx);
104 /* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */
105 extern void mark_symbol_refs_as_used (rtx);
107 /* Print a memory reference operand for address X
108 using machine-dependent assembler syntax. */
109 extern void output_address (rtx);
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);
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 /* This is a magic identifier which allows GCC to figure out the type
121 of HOST_WIDE_INT for %wd specifier checks. You must issue this
122 typedef before using the __asm_fprintf__ format attribute. */
123 typedef HOST_WIDE_INT __gcc_host_wide_int__;
124 #else
125 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
126 #endif
128 extern void asm_fprintf (FILE *file, const char *p, ...)
129 ATTRIBUTE_ASM_FPRINTF(2, 3);
131 /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
132 words. */
133 extern void split_double (rtx, rtx *, rtx *);
135 /* Return nonzero if this function has no function calls. */
136 extern int leaf_function_p (void);
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);
143 /* Return 1 if this function uses only the registers that can be
144 safely renumbered. */
145 extern int only_leaf_regs_used (void);
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);
151 /* Locate the proper template for the given insn-code. */
152 extern const char *get_insn_template (int, rtx);
154 /* Functions in varasm.c. */
156 /* Declare DECL to be a weak symbol. */
157 extern void declare_weak (tree);
158 /* Merge weak status. */
159 extern void merge_weak (tree, tree);
161 /* Emit any pending weak declarations. */
162 extern void weak_finish (void);
164 /* Emit any pending emutls declarations and initializations. */
165 extern void emutls_finish (void);
167 /* Decode an `asm' spec for a declaration as a register name.
168 Return the register number, or -1 if nothing specified,
169 or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
170 or -3 if ASMSPEC is `cc' and is not recognized,
171 or -4 if ASMSPEC is `memory' and is not recognized.
172 Accept an exact spelling or a decimal number.
173 Prefixes such as % are optional. */
174 extern int decode_reg_name (const char *);
176 extern void assemble_alias (tree, tree);
178 extern void default_assemble_visibility (tree, int);
180 /* Output a string of literal assembler code
181 for an `asm' keyword used between functions. */
182 extern void assemble_asm (tree);
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 *);
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 *);
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.
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);
205 /* Compute the alignment of variable specified by DECL.
206 DONT_OUTPUT_DATA is from assemble_variable. */
207 extern void align_variable (tree decl, bool dont_output_data);
209 /* Queue for outputting something to declare an external symbol to the
210 assembler. (Most assemblers don't need this, so we normally output
211 nothing.) Do nothing if DECL is not external. */
212 extern void assemble_external (tree);
214 /* Assemble code to leave SIZE bytes of zeros. */
215 extern void assemble_zeros (unsigned HOST_WIDE_INT);
217 /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
218 extern void assemble_align (int);
220 /* Assemble a string constant with the specified C string as contents. */
221 extern void assemble_string (const char *, int);
223 /* Similar, for calling a library function FUN. */
224 extern void assemble_external_libcall (rtx);
226 /* Assemble a label named NAME. */
227 extern void assemble_label (const char *);
229 /* Output to FILE (an assembly file) a reference to NAME. If NAME
230 starts with a *, the rest of NAME is output verbatim. Otherwise
231 NAME is transformed in a target-specific way (usually by the
232 addition of an underscore). */
233 extern void assemble_name_raw (FILE *, const char *);
235 /* Like assemble_name_raw, but should be used when NAME might refer to
236 an entity that is also represented as a tree (like a function or
237 variable). If NAME does refer to such an entity, that entity will
238 be marked as referenced. */
239 extern void assemble_name (FILE *, const char *);
241 /* Return the assembler directive for creating a given kind of integer
242 object. SIZE is the number of bytes in the object and ALIGNED_P
243 indicates whether it is known to be aligned. Return NULL if the
244 assembly dialect has no such directive.
246 The returned string should be printed at the start of a new line and
247 be followed immediately by the object's initial value. */
248 extern const char *integer_asm_op (int, int);
250 /* Use directive OP to assemble an integer object X. Print OP at the
251 start of the line, followed immediately by the value of X. */
252 extern void assemble_integer_with_op (const char *, rtx);
254 /* The default implementation of the asm_out.integer target hook. */
255 extern bool default_assemble_integer (rtx, unsigned int, int);
257 /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is
258 the alignment of the integer in bits. Return 1 if we were able to output
259 the constant, otherwise 0. If FORCE is nonzero the constant must
260 be outputable. */
261 extern bool assemble_integer (rtx, unsigned, unsigned, int);
263 /* An interface to assemble_integer for the common case in which a value is
264 fully aligned and must be printed. VALUE is the value of the integer
265 object and SIZE is the number of bytes it contains. */
266 #define assemble_aligned_integer(SIZE, VALUE) \
267 assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
269 #ifdef REAL_VALUE_TYPE_SIZE
270 /* Assemble the floating-point constant D into an object of size MODE. */
271 extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
272 #endif
274 /* Write the address of the entity given by SYMBOL to SEC. */
275 extern void assemble_addr_to_section (rtx, section *);
277 /* Return the size of the constant pool. */
278 extern int get_pool_size (void);
280 #ifdef HAVE_peephole
281 extern rtx peephole (rtx);
282 #endif
284 extern void output_shared_constant_pool (void);
286 extern void output_object_blocks (void);
288 /* Whether a constructor CTOR is a valid static constant initializer if all
289 its elements are. This used to be internal to initializer_constant_valid_p
290 and has been exposed to let other functions like categorize_ctor_elements
291 evaluate the property while walking a constructor for other purposes. */
293 extern bool constructor_static_from_elts_p (const_tree);
295 /* Return nonzero if VALUE is a valid constant-valued expression
296 for use in initializing a static variable; one that can be an
297 element of a "constant" initializer.
299 Return null_pointer_node if the value is absolute;
300 if it is relocatable, return the variable that determines the relocation.
301 We assume that VALUE has been folded as much as possible;
302 therefore, we do not need to check for such things as
303 arithmetic-combinations of integers. */
304 extern tree initializer_constant_valid_p (tree, tree);
306 /* Return true if VALUE is a valid constant-valued expression
307 for use in initializing a static bit-field; one that can be
308 an element of a "constant" initializer. */
309 extern bool initializer_constant_valid_for_bitfield_p (tree);
311 /* Output assembler code for constant EXP to FILE, with no label.
312 This includes the pseudo-op such as ".int" or ".byte", and a newline.
313 Assumes output_addressed_constants has been done on EXP already.
315 Generate exactly SIZE bytes of assembler data, padding at the end
316 with zeros if necessary. SIZE must always be specified.
318 ALIGN is the alignment in bits that may be assumed for the data. */
319 extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int);
321 /* When outputting delayed branch sequences, this rtx holds the
322 sequence being output. It is null when no delayed branch
323 sequence is being output, so it can be used as a test in the
324 insn output code.
326 This variable is defined in final.c. */
327 extern rtx final_sequence;
329 /* The line number of the beginning of the current function. Various
330 md code needs this so that it can output relative linenumbers. */
332 #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
333 extern int sdb_begin_function_line;
334 #endif
336 /* File in which assembler code is being written. */
338 #ifdef BUFSIZ
339 extern FILE *asm_out_file;
340 #endif
342 /* The first global object in the file. */
343 extern const char *first_global_object_name;
345 /* The first weak object in the file. */
346 extern const char *weak_global_object_name;
348 /* Nonzero if function being compiled doesn't contain any calls
349 (ignoring the prologue and epilogue). This is set prior to
350 local register allocation and is valid for the remaining
351 compiler passes. */
353 extern int current_function_is_leaf;
355 /* Nonzero if function being compiled doesn't modify the stack pointer
356 (ignoring the prologue and epilogue). This is only valid after
357 pass_stack_ptr_mod has run. */
359 extern int current_function_sp_is_unchanging;
361 /* Nonzero if the function being compiled is a leaf function which only
362 uses leaf registers. This is valid after reload (specifically after
363 sched2) and is useful only if the port defines LEAF_REGISTERS. */
365 extern int current_function_uses_only_leaf_regs;
367 /* Default file in which to dump debug output. */
369 #ifdef BUFSIZ
370 extern FILE *dump_file;
371 #endif
373 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
374 extern rtx current_insn_predicate;
376 /* Last insn processed by final_scan_insn. */
377 extern rtx current_output_insn;
379 /* Nonzero while outputting an `asm' with operands.
380 This means that inconsistencies are the user's fault, so don't die.
381 The precise value is the insn being output, to pass to error_for_asm. */
382 extern rtx this_is_asm_operands;
384 /* Carry information from ASM_DECLARE_OBJECT_NAME
385 to ASM_FINISH_DECLARE_OBJECT. */
386 extern int size_directive_output;
387 extern tree last_assemble_variable_decl;
389 extern bool first_function_block_is_cold;
391 /* Decide whether DECL needs to be in a writable section.
392 RELOC is the same as for SELECT_SECTION. */
393 extern bool decl_readonly_section (const_tree, int);
395 /* This can be used to compute RELOC for the function above, when
396 given a constant expression. */
397 extern int compute_reloc_for_constant (tree);
399 /* User label prefix in effect for this compilation. */
400 extern const char *user_label_prefix;
402 /* Default target function prologue and epilogue assembler output. */
403 extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
405 /* Default target hook that outputs nothing to a stream. */
406 extern void no_asm_to_stream (FILE *);
408 /* Flags controlling properties of a section. */
409 #define SECTION_ENTSIZE 0x000ff /* entity size in section */
410 #define SECTION_CODE 0x00100 /* contains code */
411 #define SECTION_WRITE 0x00200 /* data is writable */
412 #define SECTION_DEBUG 0x00400 /* contains debug data */
413 #define SECTION_LINKONCE 0x00800 /* is linkonce */
414 #define SECTION_SMALL 0x01000 /* contains "small data" */
415 #define SECTION_BSS 0x02000 /* contains zeros only */
416 #define SECTION_FORGET 0x04000 /* forget that we've entered the section */
417 #define SECTION_MERGE 0x08000 /* contains mergeable data */
418 #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without
419 embedded zeros */
420 #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */
421 #define SECTION_TLS 0x40000 /* contains thread-local storage */
422 #define SECTION_NOTYPE 0x80000 /* don't output @progbits */
423 #define SECTION_DECLARED 0x100000 /* section has been used */
424 #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */
425 #define SECTION_COMMON 0x800000 /* contains common data */
426 #define SECTION_MACH_DEP 0x1000000 /* subsequent bits reserved for target */
428 /* This SECTION_STYLE is used for unnamed sections that we can switch
429 to using a special assembler directive. */
430 #define SECTION_UNNAMED 0x000000
432 /* This SECTION_STYLE is used for named sections that we can switch
433 to using a general section directive. */
434 #define SECTION_NAMED 0x200000
436 /* This SECTION_STYLE is used for sections that we cannot switch to at
437 all. The choice of section is implied by the directive that we use
438 to declare the object. */
439 #define SECTION_NOSWITCH 0x400000
441 /* A helper function for default_elf_select_section and
442 default_elf_unique_section. Categorizes the DECL. */
444 enum section_category
446 SECCAT_TEXT,
448 SECCAT_RODATA,
449 SECCAT_RODATA_MERGE_STR,
450 SECCAT_RODATA_MERGE_STR_INIT,
451 SECCAT_RODATA_MERGE_CONST,
452 SECCAT_SRODATA,
454 SECCAT_DATA,
456 /* To optimize loading of shared programs, define following subsections
457 of data section:
458 _REL Contains data that has relocations, so they get grouped
459 together and dynamic linker will visit fewer pages in memory.
460 _RO Contains data that is otherwise read-only. This is useful
461 with prelinking as most relocations won't be dynamically
462 linked and thus stay read only.
463 _LOCAL Marks data containing relocations only to local objects.
464 These relocations will get fully resolved by prelinking. */
465 SECCAT_DATA_REL,
466 SECCAT_DATA_REL_LOCAL,
467 SECCAT_DATA_REL_RO,
468 SECCAT_DATA_REL_RO_LOCAL,
470 SECCAT_SDATA,
471 SECCAT_TDATA,
473 SECCAT_BSS,
474 SECCAT_SBSS,
475 SECCAT_TBSS,
477 SECCAT_EMUTLS_VAR,
478 SECCAT_EMUTLS_TMPL
481 /* Information that is provided by all instances of the section type. */
482 struct GTY(()) section_common {
483 /* The set of SECTION_* flags that apply to this section. */
484 unsigned int flags;
487 /* Information about a SECTION_NAMED section. */
488 struct GTY(()) named_section {
489 struct section_common common;
491 /* The name of the section. */
492 const char *name;
494 /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
495 section is associated. */
496 tree decl;
499 /* A callback that writes the assembly code for switching to an unnamed
500 section. The argument provides callback-specific data. */
501 typedef void (*unnamed_section_callback) (const void *);
503 /* Information about a SECTION_UNNAMED section. */
504 struct GTY(()) unnamed_section {
505 struct section_common common;
507 /* The callback used to switch to the section, and the data that
508 should be passed to the callback. */
509 unnamed_section_callback GTY ((skip)) callback;
510 const void *GTY ((skip)) data;
512 /* The next entry in the chain of unnamed sections. */
513 section *next;
516 /* A callback that writes the assembly code for a decl in a
517 SECTION_NOSWITCH section. DECL is the decl that should be assembled
518 and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl
519 in bytes and ROUNDED is that size rounded up to the next
520 BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
522 Return true if the callback used DECL_ALIGN to set the object's
523 alignment. A false return value implies that we are relying
524 on the rounded size to align the decl. */
525 typedef bool (*noswitch_section_callback) (tree decl, const char *name,
526 unsigned HOST_WIDE_INT size,
527 unsigned HOST_WIDE_INT rounded);
529 /* Information about a SECTION_NOSWITCH section. */
530 struct GTY(()) noswitch_section {
531 struct section_common common;
533 /* The callback used to assemble decls in this section. */
534 noswitch_section_callback GTY ((skip)) callback;
537 /* Information about a section, which may be named or unnamed. */
538 union GTY ((desc ("SECTION_STYLE (&(%h))"))) section {
539 struct section_common GTY ((skip)) common;
540 struct named_section GTY ((tag ("SECTION_NAMED"))) named;
541 struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
542 struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
545 /* Return the style of section SECT. */
546 #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
548 struct object_block;
550 /* Special well-known sections. */
551 extern GTY(()) section *text_section;
552 extern GTY(()) section *data_section;
553 extern GTY(()) section *readonly_data_section;
554 extern GTY(()) section *sdata_section;
555 extern GTY(()) section *ctors_section;
556 extern GTY(()) section *dtors_section;
557 extern GTY(()) section *bss_section;
558 extern GTY(()) section *sbss_section;
559 extern GTY(()) section *exception_section;
560 extern GTY(()) section *eh_frame_section;
561 extern GTY(()) section *tls_comm_section;
562 extern GTY(()) section *comm_section;
563 extern GTY(()) section *lcomm_section;
564 extern GTY(()) section *bss_noswitch_section;
566 extern GTY(()) section *in_section;
567 extern GTY(()) bool in_cold_section_p;
569 extern section *get_unnamed_section (unsigned int, void (*) (const void *),
570 const void *);
571 extern section *get_section (const char *, unsigned int, tree);
572 extern section *get_named_section (tree, const char *, int);
573 extern void place_block_symbol (rtx);
574 extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
575 enum tls_model);
576 extern section *mergeable_constant_section (enum machine_mode,
577 unsigned HOST_WIDE_INT,
578 unsigned int);
579 extern section *function_section (tree);
580 extern section *unlikely_text_section (void);
581 extern section *current_function_section (void);
583 /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
584 not) section for PRIORITY. */
585 extern section *get_cdtor_priority_section (int, bool);
587 extern bool unlikely_text_section_p (section *);
588 extern void switch_to_section (section *);
589 extern void output_section_asm_op (const void *);
591 extern unsigned int default_section_type_flags (tree, const char *, int);
593 extern bool have_global_bss_p (void);
594 extern void default_no_named_section (const char *, unsigned int, tree);
595 extern void default_elf_asm_named_section (const char *, unsigned int, tree);
596 extern enum section_category categorize_decl_for_section (const_tree, int);
597 extern void default_coff_asm_named_section (const char *, unsigned int, tree);
598 extern void default_pe_asm_named_section (const char *, unsigned int, tree);
600 extern void default_stabs_asm_out_destructor (rtx, int);
601 extern void default_named_section_asm_out_destructor (rtx, int);
602 extern void default_dtor_section_asm_out_destructor (rtx, int);
603 extern void default_stabs_asm_out_constructor (rtx, int);
604 extern void default_named_section_asm_out_constructor (rtx, int);
605 extern void default_ctor_section_asm_out_constructor (rtx, int);
607 extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
608 extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
609 extern void default_unique_section (tree, int);
610 extern section *default_function_rodata_section (tree);
611 extern section *default_no_function_rodata_section (tree);
612 extern section *default_select_rtx_section (enum machine_mode, rtx,
613 unsigned HOST_WIDE_INT);
614 extern section *default_elf_select_rtx_section (enum machine_mode, rtx,
615 unsigned HOST_WIDE_INT);
616 extern void default_encode_section_info (tree, rtx, int);
617 extern const char *default_strip_name_encoding (const char *);
618 extern void default_asm_output_anchor (rtx);
619 extern bool default_use_anchors_for_symbol_p (const_rtx);
620 extern bool default_binds_local_p (const_tree);
621 extern bool default_binds_local_p_1 (const_tree, int);
622 extern void default_globalize_label (FILE *, const char *);
623 extern void default_globalize_decl_name (FILE *, tree);
624 extern void default_emit_unwind_label (FILE *, tree, int, int);
625 extern void default_emit_except_table_label (FILE *);
626 extern void default_internal_label (FILE *, const char *, unsigned long);
627 extern void default_file_start (void);
628 extern void file_end_indicate_exec_stack (void);
630 extern void default_elf_asm_output_external (FILE *file, tree,
631 const char *);
632 extern int maybe_assemble_visibility (tree);
634 extern int default_address_cost (rtx, bool);
636 /* dbxout helper functions */
637 #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
639 extern void dbxout_int (int);
640 extern void dbxout_stabd (int, int);
641 extern void dbxout_begin_stabn (int);
642 extern void dbxout_begin_stabn_sline (int);
643 extern void dbxout_begin_empty_stabs (int);
644 extern void dbxout_begin_simple_stabs (const char *, int);
645 extern void dbxout_begin_simple_stabs_desc (const char *, int, int);
647 extern void dbxout_stab_value_zero (void);
648 extern void dbxout_stab_value_label (const char *);
649 extern void dbxout_stab_value_label_diff (const char *, const char *);
650 extern void dbxout_stab_value_internal_label (const char *, int *);
651 extern void dbxout_stab_value_internal_label_diff (const char *, int *,
652 const char *);
654 #endif
656 #endif /* ! GCC_OUTPUT_H */