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[official-gcc.git] / gcc / output.h
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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) 1987-2021 Free Software Foundation, Inc.
5 This file is part of GCC.
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.
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.
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/>. */
21 #ifndef GCC_OUTPUT_H
22 #define GCC_OUTPUT_H
24 /* Initialize data in final at the beginning of a compilation. */
25 extern void init_final (const char *);
27 /* Enable APP processing of subsequent output.
28 Used before the output from an `asm' statement. */
29 extern void app_enable (void);
31 /* Disable APP processing of subsequent output.
32 Called from varasm.c before most kinds of output. */
33 extern void app_disable (void);
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);
40 /* Indicate that branch shortening hasn't yet been done. */
41 extern void init_insn_lengths (void);
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 *);
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 *);
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 *);
55 const char *get_some_local_dynamic_name ();
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);
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);
69 /* Output assembler code for some insns: all or part of a function. */
70 extern void final (rtx_insn *, FILE *, int);
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 *);
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);
81 /* Print an operand using machine-dependent assembler syntax. */
82 extern void output_operand (rtx, int);
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;
88 /* Output a string of assembler code, substituting insn operands.
89 Defined in final.c. */
90 extern void output_asm_insn (const char *, rtx *);
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 *);
97 /* Find the alignment associated with a CODE_LABEL.
98 Defined in final.c. */
99 extern align_flags label_to_alignment (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 with access mode MODE
108 using machine-dependent assembler syntax. */
109 extern void output_address (machine_mode, 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 #else
121 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
122 #endif
124 extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT);
125 extern void fprint_ul (FILE *, unsigned long);
126 extern int sprint_ul (char *, unsigned long);
128 extern void asm_fprintf (FILE *file, const char *p, ...)
129 ATTRIBUTE_ASM_FPRINTF(2, 3);
131 /* Return nonzero if this function has no function calls. */
132 extern int leaf_function_p (void);
134 /* Return 1 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. */
137 extern int final_forward_branch_p (rtx_insn *);
139 /* Return 1 if this function uses only the registers that can be
140 safely renumbered. */
141 extern int only_leaf_regs_used (void);
143 /* Scan IN_RTX and its subexpressions, and renumber all regs into those
144 available in leaf functions. */
145 extern void leaf_renumber_regs_insn (rtx);
147 /* Locate the proper template for the given insn-code. */
148 extern const char *get_insn_template (int, rtx_insn *);
150 /* Functions in varasm.c. */
152 /* Emit any pending weak declarations. */
153 extern void weak_finish (void);
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. */
162 extern int decode_reg_name (const char *);
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. */
167 extern int decode_reg_name_and_count (const char *, int *);
169 extern void do_assemble_alias (tree, tree);
170 extern void do_assemble_symver (tree, tree);
172 extern void default_assemble_visibility (tree, int);
174 /* Output a string of literal assembler code
175 for an `asm' keyword used between functions. */
176 extern void assemble_asm (tree);
178 /* Get the function's name from a decl, as described by its RTL. */
179 extern const char *get_fnname_from_decl (tree);
181 /* Output assembler code for the constant pool of a function and associated
182 with defining the name of the function. DECL describes the function.
183 NAME is the function's name. For the constant pool, we use the current
184 constant pool data. */
185 extern void assemble_start_function (tree, const char *);
187 /* Output assembler code associated with defining the size of the
188 function. DECL describes the function. NAME is the function's name. */
189 extern void assemble_end_function (tree, const char *);
191 /* Assemble everything that is needed for a variable or function declaration.
192 Not used for automatic variables, and not used for function definitions.
193 Should not be called for variables of incomplete structure type.
195 TOP_LEVEL is nonzero if this variable has file scope.
196 AT_END is nonzero if this is the special handling, at end of compilation,
197 to define things that have had only tentative definitions.
198 DONT_OUTPUT_DATA if nonzero means don't actually output the
199 initial value (that will be done by the caller). */
200 extern void assemble_variable (tree, int, int, int);
202 /* Put the vtable verification constructor initialization function
203 into the preinit array. */
204 extern void assemble_vtv_preinit_initializer (tree);
206 /* Assemble everything that is needed for a variable declaration that has
207 no definition in the current translation unit. */
208 extern void assemble_undefined_decl (tree);
210 /* Compute the alignment of variable specified by DECL.
211 DONT_OUTPUT_DATA is from assemble_variable. */
212 extern void align_variable (tree decl, bool dont_output_data);
214 /* Queue for outputting something to declare an external symbol to the
215 assembler. (Most assemblers don't need this, so we normally output
216 nothing.) Do nothing if DECL is not external. */
217 extern void assemble_external (tree);
219 /* Assemble code to leave SIZE bytes of zeros. */
220 extern void assemble_zeros (unsigned HOST_WIDE_INT);
222 /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
223 extern void assemble_align (unsigned int);
225 /* Assemble a string constant with the specified C string as contents. */
226 extern void assemble_string (const char *, int);
228 /* Similar, for calling a library function FUN. */
229 extern void assemble_external_libcall (rtx);
231 /* Assemble a label named NAME. */
232 extern void assemble_label (FILE *, const char *);
234 /* Output to FILE (an assembly file) a reference to NAME. If NAME
235 starts with a *, the rest of NAME is output verbatim. Otherwise
236 NAME is transformed in a target-specific way (usually by the
237 addition of an underscore). */
238 extern void assemble_name_raw (FILE *, const char *);
240 /* Return NAME that should actually be emitted, looking through
241 transparent aliases. If NAME refers to an entity that is also
242 represented as a tree (like a function or variable), mark the entity
243 as referenced. */
244 extern const char *assemble_name_resolve (const char *);
246 /* Like assemble_name_raw, but should be used when NAME might refer to
247 an entity that is also represented as a tree (like a function or
248 variable). If NAME does refer to such an entity, that entity will
249 be marked as referenced. */
250 extern void assemble_name (FILE *, const char *);
252 /* Return the assembler directive for creating a given kind of integer
253 object. SIZE is the number of bytes in the object and ALIGNED_P
254 indicates whether it is known to be aligned. Return NULL if the
255 assembly dialect has no such directive.
257 The returned string should be printed at the start of a new line and
258 be followed immediately by the object's initial value. */
259 extern const char *integer_asm_op (int, int);
261 /* Use directive OP to assemble an integer object X. Print OP at the
262 start of the line, followed immediately by the value of X. */
263 extern void assemble_integer_with_op (const char *, rtx);
265 /* The default implementation of the asm_out.integer target hook. */
266 extern bool default_assemble_integer (rtx, unsigned int, int);
268 /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is
269 the alignment of the integer in bits. Return 1 if we were able to output
270 the constant, otherwise 0. If FORCE is nonzero the constant must
271 be outputable. */
272 extern bool assemble_integer (rtx, unsigned, unsigned, int);
274 /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL)
275 is NULL. */
276 extern section *get_named_text_section (tree, const char *, const char *);
278 /* An interface to assemble_integer for the common case in which a value is
279 fully aligned and must be printed. VALUE is the value of the integer
280 object and SIZE is the number of bytes it contains. */
281 #define assemble_aligned_integer(SIZE, VALUE) \
282 assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
284 /* Assemble the floating-point constant D into an object of size MODE. ALIGN
285 is the alignment of the constant in bits. If REVERSE is true, D is output
286 in reverse storage order. */
287 extern void assemble_real (REAL_VALUE_TYPE, scalar_float_mode, unsigned,
288 bool = false);
290 /* Write the address of the entity given by SYMBOL to SEC. */
291 extern void assemble_addr_to_section (rtx, section *);
293 /* Return TRUE if and only if the constant pool has no entries. Note
294 that even entries we might end up choosing not to emit are counted
295 here, so there is the potential for missed optimizations. */
296 extern bool constant_pool_empty_p (void);
298 extern rtx_insn *peephole (rtx_insn *);
300 extern void output_shared_constant_pool (void);
302 extern void output_object_blocks (void);
304 extern void output_quoted_string (FILE *, const char *);
306 /* When outputting delayed branch sequences, this rtx holds the
307 sequence being output. It is null when no delayed branch
308 sequence is being output, so it can be used as a test in the
309 insn output code.
311 This variable is defined in final.c. */
312 extern rtx_sequence *final_sequence;
314 /* File in which assembler code is being written. */
316 #ifdef BUFSIZ
317 extern FILE *asm_out_file;
318 #endif
320 /* The first global object in the file. */
321 extern const char *first_global_object_name;
323 /* The first weak object in the file. */
324 extern const char *weak_global_object_name;
326 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
327 extern rtx current_insn_predicate;
329 /* Last insn processed by final_scan_insn. */
330 extern rtx_insn *current_output_insn;
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;
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;
342 extern bool first_function_block_is_cold;
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);
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);
352 /* This can be used to compute RELOC for get_variable_section. */
353 extern int compute_reloc_for_var (tree);
355 /* User label prefix in effect for this compilation. */
356 extern const char *user_label_prefix;
358 /* Default target function prologue and epilogue assembler output. */
359 extern void default_function_pro_epilogue (FILE *);
361 /* Default target function switched text sections. */
362 extern void default_function_switched_text_sections (FILE *, tree, bool);
364 /* Default target hook that outputs nothing to a stream. */
365 extern void no_asm_to_stream (FILE *);
367 /* Flags controlling properties of a section. */
368 #define SECTION_ENTSIZE 0x000ff /* entity size in section */
369 #define SECTION_CODE 0x00100 /* contains code */
370 #define SECTION_WRITE 0x00200 /* data is writable */
371 #define SECTION_DEBUG 0x00400 /* contains debug data */
372 #define SECTION_LINKONCE 0x00800 /* is linkonce */
373 #define SECTION_SMALL 0x01000 /* contains "small data" */
374 #define SECTION_BSS 0x02000 /* contains zeros only */
375 #define SECTION_FORGET 0x04000 /* forget that we've entered the section */
376 #define SECTION_MERGE 0x08000 /* contains mergeable data */
377 #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without
378 embedded zeros */
379 #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */
380 #define SECTION_TLS 0x40000 /* contains thread-local storage */
381 #define SECTION_NOTYPE 0x80000 /* don't output @progbits */
382 #define SECTION_DECLARED 0x100000 /* section has been used */
383 #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */
384 #define SECTION_COMMON 0x800000 /* contains common data */
385 #define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */
386 #define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */
387 #define SECTION_RETAIN 0x4000000 /* retained by the linker. */
388 #define SECTION_LINK_ORDER 0x8000000 /* section needs link-order. */
390 /* NB: The maximum SECTION_MACH_DEP is 0x10000000 since AVR needs 4 bits
391 in SECTION_MACH_DEP. */
392 #define SECTION_MACH_DEP 0x10000000 /* subsequent bits reserved for target */
394 /* This SECTION_STYLE is used for unnamed sections that we can switch
395 to using a special assembler directive. */
396 #define SECTION_UNNAMED 0x000000
398 /* This SECTION_STYLE is used for named sections that we can switch
399 to using a general section directive. */
400 #define SECTION_NAMED 0x200000
402 /* This SECTION_STYLE is used for sections that we cannot switch to at
403 all. The choice of section is implied by the directive that we use
404 to declare the object. */
405 #define SECTION_NOSWITCH 0x400000
407 /* A helper function for default_elf_select_section and
408 default_elf_unique_section. Categorizes the DECL. */
410 enum section_category
412 SECCAT_TEXT,
414 SECCAT_RODATA,
415 SECCAT_RODATA_MERGE_STR,
416 SECCAT_RODATA_MERGE_STR_INIT,
417 SECCAT_RODATA_MERGE_CONST,
418 SECCAT_SRODATA,
420 SECCAT_DATA,
422 /* To optimize loading of shared programs, define following subsections
423 of data section:
424 _REL Contains data that has relocations, so they get grouped
425 together and dynamic linker will visit fewer pages in memory.
426 _RO Contains data that is otherwise read-only. This is useful
427 with prelinking as most relocations won't be dynamically
428 linked and thus stay read only.
429 _LOCAL Marks data containing relocations only to local objects.
430 These relocations will get fully resolved by prelinking. */
431 SECCAT_DATA_REL,
432 SECCAT_DATA_REL_LOCAL,
433 SECCAT_DATA_REL_RO,
434 SECCAT_DATA_REL_RO_LOCAL,
436 SECCAT_SDATA,
437 SECCAT_TDATA,
439 SECCAT_BSS,
440 SECCAT_SBSS,
441 SECCAT_TBSS
444 /* Information that is provided by all instances of the section type. */
445 struct GTY(()) section_common {
446 /* The set of SECTION_* flags that apply to this section. */
447 unsigned int flags;
450 /* Information about a SECTION_NAMED section. */
451 struct GTY(()) named_section {
452 struct section_common common;
454 /* The name of the section. */
455 const char *name;
457 /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
458 section is associated. */
459 tree decl;
462 /* A callback that writes the assembly code for switching to an unnamed
463 section. The argument provides callback-specific data. */
464 typedef void (*unnamed_section_callback) (const void *);
466 /* Information about a SECTION_UNNAMED section. */
467 struct GTY(()) unnamed_section {
468 struct section_common common;
470 /* The callback used to switch to the section, and the data that
471 should be passed to the callback. */
472 unnamed_section_callback GTY ((skip)) callback;
473 const void *GTY ((skip)) data;
475 /* The next entry in the chain of unnamed sections. */
476 section *next;
479 /* A callback that writes the assembly code for a decl in a
480 SECTION_NOSWITCH section. DECL is the decl that should be assembled
481 and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl
482 in bytes and ROUNDED is that size rounded up to the next
483 BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
485 Return true if the callback used DECL_ALIGN to set the object's
486 alignment. A false return value implies that we are relying
487 on the rounded size to align the decl. */
488 typedef bool (*noswitch_section_callback) (tree decl, const char *name,
489 unsigned HOST_WIDE_INT size,
490 unsigned HOST_WIDE_INT rounded);
492 /* Information about a SECTION_NOSWITCH section. */
493 struct GTY(()) noswitch_section {
494 struct section_common common;
496 /* The callback used to assemble decls in this section. */
497 noswitch_section_callback GTY ((skip)) callback;
500 /* Information about a section, which may be named or unnamed. */
501 union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section {
502 struct section_common GTY ((skip)) common;
503 struct named_section GTY ((tag ("SECTION_NAMED"))) named;
504 struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
505 struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
508 /* Return the style of section SECT. */
509 #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
511 struct object_block;
513 /* Special well-known sections. */
514 extern GTY(()) section *text_section;
515 extern GTY(()) section *data_section;
516 extern GTY(()) section *readonly_data_section;
517 extern GTY(()) section *sdata_section;
518 extern GTY(()) section *ctors_section;
519 extern GTY(()) section *dtors_section;
520 extern GTY(()) section *bss_section;
521 extern GTY(()) section *sbss_section;
522 extern GTY(()) section *exception_section;
523 extern GTY(()) section *eh_frame_section;
524 extern GTY(()) section *tls_comm_section;
525 extern GTY(()) section *comm_section;
526 extern GTY(()) section *lcomm_section;
527 extern GTY(()) section *bss_noswitch_section;
529 extern GTY(()) section *in_section;
530 extern GTY(()) bool in_cold_section_p;
532 extern section *get_unnamed_section (unsigned int, void (*) (const void *),
533 const void *);
534 extern section *get_section (const char *, unsigned int, tree,
535 bool not_existing = false);
536 extern section *get_named_section (tree, const char *, int);
537 extern section *get_variable_section (tree, bool);
538 extern void place_block_symbol (rtx);
539 extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
540 enum tls_model);
541 extern section *mergeable_constant_section (machine_mode,
542 unsigned HOST_WIDE_INT,
543 unsigned int);
544 extern section *function_section (tree);
545 extern section *unlikely_text_section (void);
546 extern section *current_function_section (void);
547 extern void switch_to_other_text_partition (void);
549 /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
550 not) section for PRIORITY. */
551 extern section *get_cdtor_priority_section (int, bool);
553 extern bool unlikely_text_section_p (section *);
554 extern void switch_to_section (section *, tree = nullptr);
555 extern void output_section_asm_op (const void *);
557 extern void record_tm_clone_pair (tree, tree);
558 extern void finish_tm_clone_pairs (void);
559 extern tree get_tm_clone_pair (tree);
561 extern void default_asm_output_source_filename (FILE *, const char *);
562 extern void output_file_directive (FILE *, const char *);
564 extern unsigned int default_section_type_flags (tree, const char *, int);
566 extern bool have_global_bss_p (void);
567 extern bool bss_initializer_p (const_tree, bool = false);
569 extern void default_no_named_section (const char *, unsigned int, tree);
570 extern void default_elf_asm_named_section (const char *, unsigned int, tree);
571 extern enum section_category categorize_decl_for_section (const_tree, int);
572 extern void default_coff_asm_named_section (const char *, unsigned int, tree);
573 extern void default_pe_asm_named_section (const char *, unsigned int, tree);
575 extern void default_named_section_asm_out_destructor (rtx, int);
576 extern void default_dtor_section_asm_out_destructor (rtx, int);
577 extern void default_named_section_asm_out_constructor (rtx, int);
578 extern void default_ctor_section_asm_out_constructor (rtx, int);
580 extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
581 extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
582 extern void default_unique_section (tree, int);
583 extern section *default_function_rodata_section (tree, bool);
584 extern section *default_no_function_rodata_section (tree, bool);
585 extern section *default_clone_table_section (void);
586 extern section *default_select_rtx_section (machine_mode, rtx,
587 unsigned HOST_WIDE_INT);
588 extern section *default_elf_select_rtx_section (machine_mode, rtx,
589 unsigned HOST_WIDE_INT);
590 extern void default_encode_section_info (tree, rtx, int);
591 extern const char *default_strip_name_encoding (const char *);
592 extern void default_asm_output_anchor (rtx);
593 extern bool default_use_anchors_for_symbol_p (const_rtx);
594 extern bool default_binds_local_p (const_tree);
595 extern bool default_binds_local_p_1 (const_tree, int);
596 extern bool default_binds_local_p_2 (const_tree);
597 extern bool default_binds_local_p_3 (const_tree, bool, bool, bool, bool);
598 extern void default_globalize_label (FILE *, const char *);
599 extern void default_globalize_decl_name (FILE *, tree);
600 extern void default_emit_unwind_label (FILE *, tree, int, int);
601 extern void default_emit_except_table_label (FILE *);
602 extern void default_generate_internal_label (char *, const char *,
603 unsigned long);
604 extern void default_internal_label (FILE *, const char *, unsigned long);
605 extern void default_asm_declare_constant_name (FILE *, const char *,
606 const_tree, HOST_WIDE_INT);
607 extern void default_file_start (void);
608 extern void file_end_indicate_exec_stack (void);
609 extern void file_end_indicate_split_stack (void);
611 extern void default_elf_asm_output_external (FILE *file, tree,
612 const char *);
613 extern void default_elf_asm_output_limited_string (FILE *, const char *);
614 extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int);
615 extern void default_elf_internal_label (FILE *, const char *, unsigned long);
617 extern void default_elf_init_array_asm_out_constructor (rtx, int);
618 extern void default_elf_fini_array_asm_out_destructor (rtx, int);
619 extern int maybe_assemble_visibility (tree);
621 extern int default_address_cost (rtx, machine_mode, addr_space_t, bool);
623 /* Stack usage. */
624 extern void output_stack_usage (void);
626 #endif /* ! GCC_OUTPUT_H */