1/* Declarations for insn-output.cc and other code to write to asm_out_file.
2 These functions are defined in final.cc, and varasm.cc.
3 Copyright (C) 1987-2025 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along 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. */
25extern void init_final (const char *);
26
27/* Enable APP processing of subsequent output.
28 Used before the output from an `asm' statement. */
29extern void app_enable (void);
30
31/* Disable APP processing of subsequent output.
32 Called from varasm.cc before most kinds of output. */
33extern 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. */
38extern int dbr_sequence_length (void);
39
40/* Indicate that branch shortening hasn't yet been done. */
41extern 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. */
45extern 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. */
49extern 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. */
53extern void shorten_branches (rtx_insn *);
54
55const 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'. */
62extern 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. */
67extern void final_end_function (void);
68
69/* Output assembler code for some insns: all or part of a function. */
70extern 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. */
75extern 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. */
79extern rtx alter_subreg (rtx *, bool);
80
81/* Print an operand using machine-dependent assembler syntax. */
82extern 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. */
86extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1;
87
88/* Output a string of assembler code, substituting insn operands.
89 Defined in final.cc. */
90extern 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.cc. */
95extern int insn_current_reference_address (rtx_insn *);
96
97/* Find the alignment associated with a CODE_LABEL.
98 Defined in final.cc. */
99extern align_flags label_to_alignment (rtx);
100
101/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
102extern void output_asm_label (rtx);
103
104/* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */
105extern void mark_symbol_refs_as_used (rtx);
106
107/* Print a memory reference operand for address X with access mode MODE
108 using machine-dependent assembler syntax. */
109extern void output_address (machine_mode, rtx);
110
111/* Print an integer constant expression in assembler syntax.
112 Addition and subtraction are the only arithmetic
113 that may appear in these expressions. */
114extern void output_addr_const (FILE *, rtx);
115
116/* Output a string of assembler code, substituting numbers, strings
117 and fixed syntactic prefixes. */
118#if GCC_VERSION >= 3004
119#define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
120#else
121#define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
122#endif
123
124extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT);
125extern void fprint_ul (FILE *, unsigned long);
126extern int sprint_ul (char *, unsigned long);
127
128extern void asm_fprintf (FILE *file, const char *p, ...)
129 ATTRIBUTE_ASM_FPRINTF(2, 3);
130
131/* Return true if this function has no function calls. */
132extern bool leaf_function_p (void);
133
134/* Return true if branch is a forward branch.
135 Uses insn_shuid array, so it works only in the final pass. May be used by
136 output templates to add branch prediction hints, for example. */
137extern bool final_forward_branch_p (rtx_insn *);
138
139/* Return true if this function uses only the registers that can be
140 safely renumbered. */
141extern bool only_leaf_regs_used (void);
142
143/* Scan IN_RTX and its subexpressions, and renumber all regs into those
144 available in leaf functions. */
145extern void leaf_renumber_regs_insn (rtx);
146
147/* Locate the proper template for the given insn-code. */
148extern const char *get_insn_template (int, rtx_insn *);
149
150/* Functions in varasm.cc. */
151
152/* Emit any pending weak declarations. */
153extern void weak_finish (void);
154
155/* Decode an `asm' spec for a declaration as a register name.
156 Return the register number, or -1 if nothing specified,
157 or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
158 or -3 if ASMSPEC is `cc' and is not recognized,
159 or -4 if ASMSPEC is `memory' and is not recognized.
160 Accept an exact spelling or a decimal number.
161 Prefixes such as % are optional. */
162extern int decode_reg_name (const char *);
163
164/* Similar to decode_reg_name, but takes an extra parameter that is a
165 pointer to the number of (internal) registers described by the
166 external name. */
167extern int decode_reg_name_and_count (const char *, int *);
168
169extern void do_assemble_alias (tree, tree);
170extern void do_assemble_symver (tree, tree);
171
172extern void default_assemble_visibility (tree, int);
173
174/* Output a string of literal assembler code
175 for an `asm' keyword used between functions. */
176extern void assemble_asm (tree);
177
178/* Get the function's name from a decl, as described by its RTL. */
179extern const char *get_fnname_from_decl (tree);
180
181/* Output function label, possibly with accompanying metadata. No additional
182 code or data is output after the label. */
183extern void assemble_function_label_raw (FILE *, const char *);
184
185/* Finish outputting function label. Needs to be called when outputting
186 function label without using assemble_function_label_raw (). */
187extern void assemble_function_label_final (void);
188
189/* Output assembler code for the constant pool of a function and associated
190 with defining the name of the function. DECL describes the function.
191 NAME is the function's name. For the constant pool, we use the current
192 constant pool data. */
193extern void assemble_start_function (tree, const char *);
194
195/* Output assembler code associated with defining the size of the
196 function. DECL describes the function. NAME is the function's name. */
197extern void assemble_end_function (tree, const char *);
198
199/* Assemble everything that is needed for a variable or function declaration.
200 Not used for automatic variables, and not used for function definitions.
201 Should not be called for variables of incomplete structure type.
202
203 TOP_LEVEL is nonzero if this variable has file scope.
204 AT_END is nonzero if this is the special handling, at end of compilation,
205 to define things that have had only tentative definitions.
206 DONT_OUTPUT_DATA if nonzero means don't actually output the
207 initial value (that will be done by the caller). */
208extern void assemble_variable (tree, int, int, int);
209
210/* Assemble everything that is needed for a variable declaration that has
211 no definition in the current translation unit. */
212extern void assemble_undefined_decl (tree);
213
214/* Compute the alignment of variable specified by DECL.
215 DONT_OUTPUT_DATA is from assemble_variable. */
216extern void align_variable (tree decl, bool dont_output_data);
217
218/* Queue for outputting something to declare an external symbol to the
219 assembler. (Most assemblers don't need this, so we normally output
220 nothing.) Do nothing if DECL is not external. */
221extern void assemble_external (tree);
222
223/* Assemble code to leave SIZE bytes of zeros. */
224extern void assemble_zeros (unsigned HOST_WIDE_INT);
225
226/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
227extern void assemble_align (unsigned int);
228
229/* Assemble a string constant with the specified C string as contents. */
230extern void assemble_string (const char *, int);
231
232/* Similar, for calling a library function FUN. */
233extern void assemble_external_libcall (rtx);
234
235/* Assemble a label named NAME. */
236extern void assemble_label (FILE *, const char *);
237
238/* Output to FILE (an assembly file) a reference to NAME. If NAME
239 starts with a *, the rest of NAME is output verbatim. Otherwise
240 NAME is transformed in a target-specific way (usually by the
241 addition of an underscore). */
242extern void assemble_name_raw (FILE *, const char *);
243
244/* Return NAME that should actually be emitted, looking through
245 transparent aliases. If NAME refers to an entity that is also
246 represented as a tree (like a function or variable), mark the entity
247 as referenced. */
248extern const char *assemble_name_resolve (const char *);
249
250/* Like assemble_name_raw, but should be used when NAME might refer to
251 an entity that is also represented as a tree (like a function or
252 variable). If NAME does refer to such an entity, that entity will
253 be marked as referenced. */
254extern void assemble_name (FILE *, const char *);
255
256/* Return the assembler directive for creating a given kind of integer
257 object. SIZE is the number of bytes in the object and ALIGNED_P
258 indicates whether it is known to be aligned. Return NULL if the
259 assembly dialect has no such directive.
260
261 The returned string should be printed at the start of a new line and
262 be followed immediately by the object's initial value. */
263extern const char *integer_asm_op (int, int);
264
265/* Use directive OP to assemble an integer object X. Print OP at the
266 start of the line, followed immediately by the value of X. */
267extern void assemble_integer_with_op (const char *, rtx);
268
269/* The default implementation of the asm_out.integer target hook. */
270extern bool default_assemble_integer (rtx, unsigned int, int);
271
272/* Assemble the integer constant X into an object of SIZE bytes. ALIGN is
273 the alignment of the integer in bits. Return 1 if we were able to output
274 the constant, otherwise 0. If FORCE is nonzero the constant must
275 be outputable. */
276extern bool assemble_integer (rtx, unsigned, unsigned, int);
277
278/* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL)
279 is NULL. */
280extern section *get_named_text_section (tree, const char *, const char *);
281
282/* An interface to assemble_integer for the common case in which a value is
283 fully aligned and must be printed. VALUE is the value of the integer
284 object and SIZE is the number of bytes it contains. */
285#define assemble_aligned_integer(SIZE, VALUE) \
286 assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
287
288/* Assemble the floating-point constant D into an object of size MODE. ALIGN
289 is the alignment of the constant in bits. If REVERSE is true, D is output
290 in reverse storage order. */
291extern void assemble_real (REAL_VALUE_TYPE, scalar_float_mode, unsigned,
292 bool = false);
293
294/* Write the address of the entity given by SYMBOL to SEC. */
295extern void assemble_addr_to_section (rtx, section *);
296
297/* Return TRUE if and only if the constant pool has no entries. Note
298 that even entries we might end up choosing not to emit are counted
299 here, so there is the potential for missed optimizations. */
300extern bool constant_pool_empty_p (void);
301
302extern rtx_insn *peephole (rtx_insn *);
303
304extern void output_shared_constant_pool (void);
305
306extern void output_object_blocks (void);
307
308extern void output_quoted_string (FILE *, const char *);
309
310/* When outputting delayed branch sequences, this rtx holds the
311 sequence being output. It is null when no delayed branch
312 sequence is being output, so it can be used as a test in the
313 insn output code.
314
315 This variable is defined in final.cc. */
316extern rtx_sequence *final_sequence;
317
318/* File in which assembler code is being written. */
319
320#ifdef BUFSIZ
321extern FILE *asm_out_file;
322#endif
323
324/* The first global object in the file. */
325extern const char *first_global_object_name;
326
327/* The first weak object in the file. */
328extern const char *weak_global_object_name;
329
330/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
331extern rtx current_insn_predicate;
332
333/* Last insn processed by final_scan_insn. */
334extern rtx_insn *current_output_insn;
335
336/* Nonzero while outputting an `asm' with operands.
337 This means that inconsistencies are the user's fault, so don't die.
338 The precise value is the insn being output, to pass to error_for_asm. */
339extern const rtx_insn *this_is_asm_operands;
340
341/* Number of operands of this insn, for an `asm' with operands. */
342extern unsigned int insn_noperands;
343
344/* Carry information from ASM_DECLARE_OBJECT_NAME
345 to ASM_FINISH_DECLARE_OBJECT. */
346extern int size_directive_output;
347extern tree last_assemble_variable_decl;
348
349extern bool first_function_block_is_cold;
350
351/* Decide whether DECL needs to be in a writable section.
352 RELOC is the same as for SELECT_SECTION. */
353extern bool decl_readonly_section (const_tree, int);
354
355/* This can be used to compute RELOC for the function above, when
356 given a constant expression. */
357extern int compute_reloc_for_constant (tree);
358
359/* This can be used to compute RELOC for get_variable_section. */
360extern int compute_reloc_for_var (tree);
361
362/* User label prefix in effect for this compilation. */
363extern const char *user_label_prefix;
364
365/* Default target function prologue and epilogue assembler output. */
366extern void default_function_pro_epilogue (FILE *);
367
368/* Default target function switched text sections. */
369extern void default_function_switched_text_sections (FILE *, tree, bool);
370
371/* Default target hook that outputs nothing to a stream. */
372extern void no_asm_to_stream (FILE *);
373
374/* Flags controlling properties of a section. */
375enum section_flag
376{
377 /* This SECTION_STYLE is used for unnamed sections that we can switch
378 to using a special assembler directive. */
379 SECTION_UNNAMED = 0,
380
381 SECTION_ENTSIZE = (1UL << 8) - 1, /* entity size in section */
382 SECTION_CODE = 1UL << 8, /* contains code */
383 SECTION_WRITE = 1UL << 9, /* data is writable */
384
385 SECTION_DEBUG = 1UL << 10, /* contains debug data */
386 SECTION_LINKONCE = 1UL << 11, /* is linkonce */
387 SECTION_SMALL = 1UL << 12, /* contains "small data" */
388 SECTION_BSS = 1UL << 13, /* contains zeros only */
389 SECTION_MERGE = 1UL << 14, /* contains mergeable data */
390 SECTION_STRINGS = 1UL << 15, /* contains zero terminated strings
391 without embedded zeros */
392 SECTION_OVERRIDE = 1UL << 16, /* allow override of default flags */
393 SECTION_TLS = 1UL << 17, /* contains thread-local storage */
394 SECTION_NOTYPE = 1UL << 18, /* don't output @progbits */
395 SECTION_DECLARED = 1UL << 19, /* section has been used */
396
397 /* This SECTION_STYLE is used for named sections that we can switch
398 to using a general section directive. */
399 SECTION_NAMED = 1UL << 20,
400
401 /* This SECTION_STYLE is used for sections that we cannot switch to at
402 all. The choice of section is implied by the directive that we use
403 to declare the object. */
404 SECTION_NOSWITCH = 1UL << 21,
405
406 /* bits used for SECTION_STYLE */
407 SECTION_STYLE_MASK = SECTION_NAMED | SECTION_NOSWITCH,
408
409 SECTION_COMMON = 1UL << 22, /* contains common data */
410 SECTION_RELRO = 1UL << 23, /* data is readonly after
411 relocation processing */
412 SECTION_EXCLUDE = 1UL << 24, /* discarded by the linker */
413 SECTION_RETAIN = 1UL << 25, /* retained by the linker. */
414 SECTION_LINK_ORDER = 1UL << 26, /* section needs link-order. */
415
416 /* NB: The maximum SECTION_MACH_DEP is (1UL << 28) since AVR needs 4 bits
417 in SECTION_MACH_DEP. */
418 SECTION_MACH_DEP = 1UL << 27,
419
420 /* subsequent bits reserved for target */
421};
422
423/* A helper function for default_elf_select_section and
424 default_elf_unique_section. Categorizes the DECL. */
425
426enum section_category
427{
428 SECCAT_TEXT,
429
430 SECCAT_RODATA,
431 SECCAT_RODATA_MERGE_STR,
432 SECCAT_RODATA_MERGE_STR_INIT,
433 SECCAT_RODATA_MERGE_CONST,
434 SECCAT_SRODATA,
435
436 SECCAT_DATA,
437
438 /* To optimize loading of shared programs, define following subsections
439 of data section:
440 _REL Contains data that has relocations, so they get grouped
441 together and dynamic linker will visit fewer pages in memory.
442 _RO Contains data that is otherwise read-only. This is useful
443 with prelinking as most relocations won't be dynamically
444 linked and thus stay read only.
445 _LOCAL Marks data containing relocations only to local objects.
446 These relocations will get fully resolved by prelinking. */
447 SECCAT_DATA_REL,
448 SECCAT_DATA_REL_LOCAL,
449 SECCAT_DATA_REL_RO,
450 SECCAT_DATA_REL_RO_LOCAL,
451
452 SECCAT_SDATA,
453 SECCAT_TDATA,
454
455 SECCAT_BSS,
456 SECCAT_SBSS,
457 SECCAT_TBSS
458};
459
460/* Information that is provided by all instances of the section type. */
461struct GTY(()) section_common {
462 /* The set of SECTION_* flags that apply to this section. */
463 unsigned int flags;
464};
465
466/* Information about a SECTION_NAMED section. */
467struct GTY(()) named_section {
468 struct section_common common;
469
470 /* The name of the section. */
471 const char *name;
472
473 /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
474 section is associated. */
475 tree decl;
476};
477
478/* A callback that writes the assembly code for switching to an unnamed
479 section. The argument provides callback-specific data. */
480typedef void (*unnamed_section_callback) (const char *);
481
482/* Information about a SECTION_UNNAMED section. */
483struct GTY(()) unnamed_section {
484 struct section_common common;
485
486 /* The callback used to switch to the section, and the data that
487 should be passed to the callback. */
488 unnamed_section_callback GTY ((callback)) callback;
489 const char *data;
490
491 /* The next entry in the chain of unnamed sections. */
492 section *next;
493};
494
495/* A callback that writes the assembly code for a decl in a
496 SECTION_NOSWITCH section. DECL is the decl that should be assembled
497 and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl
498 in bytes and ROUNDED is that size rounded up to the next
499 BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
500
501 Return true if the callback used DECL_ALIGN to set the object's
502 alignment. A false return value implies that we are relying
503 on the rounded size to align the decl. */
504typedef bool (*noswitch_section_callback) (tree decl, const char *name,
505 unsigned HOST_WIDE_INT size,
506 unsigned HOST_WIDE_INT rounded);
507
508/* Information about a SECTION_NOSWITCH section. */
509struct GTY(()) noswitch_section {
510 struct section_common common;
511
512 /* The callback used to assemble decls in this section. */
513 noswitch_section_callback GTY ((callback)) callback;
514};
515
516/* Information about a section, which may be named or unnamed. */
517union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section {
518 struct section_common GTY ((skip)) common;
519 struct named_section GTY ((tag ("SECTION_NAMED"))) named;
520 struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
521 struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
522};
523
524/* Return the style of section SECT. */
525#define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
526
527struct object_block;
528
529/* Special well-known sections. */
530extern GTY(()) section *text_section;
531extern GTY(()) section *data_section;
532extern GTY(()) section *readonly_data_section;
533extern GTY(()) section *sdata_section;
534extern GTY(()) section *ctors_section;
535extern GTY(()) section *dtors_section;
536extern GTY(()) section *bss_section;
537extern GTY(()) section *sbss_section;
538extern GTY(()) section *exception_section;
539extern GTY(()) section *eh_frame_section;
540extern GTY(()) section *tls_comm_section;
541extern GTY(()) section *comm_section;
542extern GTY(()) section *lcomm_section;
543extern GTY(()) section *bss_noswitch_section;
544
545extern GTY(()) section *in_section;
546extern GTY(()) bool in_cold_section_p;
547
548extern section *get_unnamed_section (unsigned int, void (*) (const char *),
549 const char *);
550extern section *get_section (const char *, unsigned int, tree,
551 bool not_existing = false);
552extern section *get_named_section (tree, const char *, int);
553extern section *get_variable_section (tree, bool);
554extern void place_block_symbol (rtx);
555extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
556 enum tls_model);
557extern section *mergeable_constant_section (machine_mode,
558 unsigned HOST_WIDE_INT,
559 unsigned int);
560extern section *function_section (tree);
561extern section *unlikely_text_section (void);
562extern section *current_function_section (void);
563extern void switch_to_other_text_partition (void);
564
565/* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
566 not) section for PRIORITY. */
567extern section *get_cdtor_priority_section (int, bool);
568
569extern bool unlikely_text_section_p (section *);
570extern void switch_to_section (section *, tree = nullptr);
571extern void output_section_asm_op (const char *);
572
573extern void record_tm_clone_pair (tree, tree);
574extern void finish_tm_clone_pairs (void);
575extern tree get_tm_clone_pair (tree);
576
577extern void default_asm_output_source_filename (FILE *, const char *);
578extern void output_file_directive (FILE *, const char *);
579
580extern unsigned int default_section_type_flags (tree, const char *, int);
581
582extern bool have_global_bss_p (void);
583extern bool bss_initializer_p (const_tree, bool = false);
584
585extern void default_no_named_section (const char *, unsigned int, tree);
586extern void default_elf_asm_named_section (const char *, unsigned int, tree);
587extern enum section_category categorize_decl_for_section (const_tree, int);
588extern void default_coff_asm_named_section (const char *, unsigned int, tree);
589extern void default_pe_asm_named_section (const char *, unsigned int, tree);
590
591extern void default_named_section_asm_out_destructor (rtx, int);
592extern void default_dtor_section_asm_out_destructor (rtx, int);
593extern void default_named_section_asm_out_constructor (rtx, int);
594extern void default_ctor_section_asm_out_constructor (rtx, int);
595
596extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
597extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
598extern void default_unique_section (tree, int);
599extern section *default_function_rodata_section (tree, bool);
600extern section *default_no_function_rodata_section (tree, bool);
601extern section *default_clone_table_section (void);
602extern section *default_select_rtx_section (machine_mode, rtx,
603 unsigned HOST_WIDE_INT);
604extern section *default_elf_select_rtx_section (machine_mode, rtx,
605 unsigned HOST_WIDE_INT);
606extern void default_encode_section_info (tree, rtx, int);
607extern const char *default_strip_name_encoding (const char *);
608extern void default_asm_output_anchor (rtx);
609extern bool default_use_anchors_for_symbol_p (const_rtx);
610extern bool default_binds_local_p (const_tree);
611extern bool default_binds_local_p_1 (const_tree, int);
612extern bool default_binds_local_p_2 (const_tree);
613extern bool default_binds_local_p_3 (const_tree, bool, bool, bool, bool);
614extern void default_globalize_label (FILE *, const char *);
615extern void default_globalize_decl_name (FILE *, tree);
616extern void default_emit_unwind_label (FILE *, tree, int, int);
617extern void default_emit_except_table_label (FILE *);
618extern void default_generate_internal_label (char *, const char *,
619 unsigned long);
620extern void default_internal_label (FILE *, const char *, unsigned long);
621extern void default_asm_declare_constant_name (FILE *, const char *,
622 const_tree, HOST_WIDE_INT);
623extern void default_file_start (void);
624extern void file_end_indicate_exec_stack (void);
625extern void file_end_indicate_split_stack (void);
626
627extern void default_elf_asm_output_external (FILE *file, tree,
628 const char *);
629extern void default_elf_asm_output_limited_string (FILE *, const char *);
630extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int);
631extern void default_elf_internal_label (FILE *, const char *, unsigned long);
632
633extern void default_elf_init_array_asm_out_constructor (rtx, int);
634extern void default_elf_fini_array_asm_out_destructor (rtx, int);
635extern bool maybe_assemble_visibility (tree);
636
637extern int default_address_cost (rtx, machine_mode, addr_space_t, bool);
638
639/* Stack usage. */
640extern void output_stack_usage (void);
641
642#endif /* ! GCC_OUTPUT_H */
643

source code of gcc/output.h