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1 280 jeremybenn
/* 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.
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 3, 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 COPYING3.  If not see
20
<http://www.gnu.org/licenses/>.  */
21
 
22
#ifndef GCC_OUTPUT_H
23
#define GCC_OUTPUT_H
24
 
25
/* Initialize data in final at the beginning of a compilation.  */
26
extern void init_final (const char *);
27
 
28
/* Enable APP processing of subsequent output.
29
   Used before the output from an `asm' statement.  */
30
extern void app_enable (void);
31
 
32
/* Disable APP processing of subsequent output.
33
   Called from varasm.c before most kinds of output.  */
34
extern void app_disable (void);
35
 
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);
40
 
41
/* Indicate that branch shortening hasn't yet been done.  */
42
extern void init_insn_lengths (void);
43
 
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);
47
 
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);
51
 
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);
55
 
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);
62
 
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);
67
 
68
/* Output assembler code for some insns: all or part of a function.  */
69
extern void final (rtx, FILE *, int);
70
 
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 *);
75
 
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 *);
79
 
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;
83
 
84
/* Output a string of assembler code, substituting insn operands.
85
   Defined in final.c.  */
86
extern void output_asm_insn (const char *, rtx *);
87
 
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);
92
 
93
/* Find the alignment associated with a CODE_LABEL.
94
   Defined in final.c.  */
95
extern int label_to_alignment (rtx);
96
 
97
/* Find the alignment maximum skip associated with a CODE_LABEL.
98
   Defined in final.c.  */
99
extern int label_to_max_skip (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
/* Marks SYMBOL_REFs in x as referenced through use of assemble_external.  */
105
extern void mark_symbol_refs_as_used (rtx);
106
 
107
/* Print a memory reference operand for address X
108
   using machine-dependent assembler syntax.  */
109
extern void output_address (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.  */
114
extern 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
/* 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
127
 
128
extern void asm_fprintf (FILE *file, const char *p, ...)
129
     ATTRIBUTE_ASM_FPRINTF(2, 3);
130
 
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 *);
134
 
135
/* Return nonzero if this function has no function calls.  */
136
extern int leaf_function_p (void);
137
 
138
/* Return 1 if branch is a forward branch.
139
   Uses insn_shuid array, so it works only in the final pass.  May be used by
140
   output templates to add branch prediction hints, for example.  */
141
extern int final_forward_branch_p (rtx);
142
 
143
/* Return 1 if this function uses only the registers that can be
144
   safely renumbered.  */
145
extern int only_leaf_regs_used (void);
146
 
147
/* Scan IN_RTX and its subexpressions, and renumber all regs into those
148
   available in leaf functions.  */
149
extern void leaf_renumber_regs_insn (rtx);
150
 
151
/* Locate the proper template for the given insn-code.  */
152
extern const char *get_insn_template (int, rtx);
153
 
154
/* Functions in varasm.c.  */
155
 
156
/* Declare DECL to be a weak symbol.  */
157
extern void declare_weak (tree);
158
/* Merge weak status.  */
159
extern void merge_weak (tree, tree);
160
 
161
/* Emit any pending weak declarations.  */
162
extern void weak_finish (void);
163
 
164
/* Emit any pending emutls declarations and initializations.  */
165
extern void emutls_finish (void);
166
 
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 *);
175
 
176
extern void assemble_alias (tree, tree);
177
 
178
extern void default_assemble_visibility (tree, int);
179
 
180
/* Output a string of literal assembler code
181
   for an `asm' keyword used between functions.  */
182
extern void assemble_asm (tree);
183
 
184
/* Output assembler code for the constant pool of a function and associated
185
   with defining the name of the function.  DECL describes the function.
186
   NAME is the function's name.  For the constant pool, we use the current
187
   constant pool data.  */
188
extern void assemble_start_function (tree, const char *);
189
 
190
/* Output assembler code associated with defining the size of the
191
   function.  DECL describes the function.  NAME is the function's name.  */
192
extern void assemble_end_function (tree, const char *);
193
 
194
/* Assemble everything that is needed for a variable or function declaration.
195
   Not used for automatic variables, and not used for function definitions.
196
   Should not be called for variables of incomplete structure type.
197
 
198
   TOP_LEVEL is nonzero if this variable has file scope.
199
   AT_END is nonzero if this is the special handling, at end of compilation,
200
   to define things that have had only tentative definitions.
201
   DONT_OUTPUT_DATA if nonzero means don't actually output the
202
   initial value (that will be done by the caller).  */
203
extern void assemble_variable (tree, int, int, int);
204
 
205
/* 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);
208
 
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);
213
 
214
/* Assemble code to leave SIZE bytes of zeros.  */
215
extern void assemble_zeros (unsigned HOST_WIDE_INT);
216
 
217
/* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */
218
extern void assemble_align (int);
219
 
220
/* Assemble a string constant with the specified C string as contents.  */
221
extern void assemble_string (const char *, int);
222
 
223
/* Similar, for calling a library function FUN.  */
224
extern void assemble_external_libcall (rtx);
225
 
226
/* Assemble a label named NAME.  */
227
extern void assemble_label (const char *);
228
 
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 *);
234
 
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 *);
240
 
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.
245
 
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);
249
 
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);
253
 
254
/* The default implementation of the asm_out.integer target hook.  */
255
extern bool default_assemble_integer (rtx, unsigned int, int);
256
 
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);
262
 
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)
268
 
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
273
 
274
/* Write the address of the entity given by SYMBOL to SEC.  */
275
extern void assemble_addr_to_section (rtx, section *);
276
 
277
/* Return the size of the constant pool.  */
278
extern int get_pool_size (void);
279
 
280
#ifdef HAVE_peephole
281
extern rtx peephole (rtx);
282
#endif
283
 
284
extern void output_shared_constant_pool (void);
285
 
286
extern void output_object_blocks (void);
287
 
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.  */
292
 
293
extern bool constructor_static_from_elts_p (const_tree);
294
 
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.
298
 
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);
305
 
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);
310
 
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.
314
 
315
   Generate exactly SIZE bytes of assembler data, padding at the end
316
   with zeros if necessary.  SIZE must always be specified.
317
 
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);
320
 
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.
325
 
326
   This variable is defined  in final.c.  */
327
extern rtx final_sequence;
328
 
329
/* The line number of the beginning of the current function.  Various
330
   md code needs this so that it can output relative linenumbers.  */
331
 
332
#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers.  */
333
extern int sdb_begin_function_line;
334
#endif
335
 
336
/* File in which assembler code is being written.  */
337
 
338
#ifdef BUFSIZ
339
extern FILE *asm_out_file;
340
#endif
341
 
342
/* The first global object in the file.  */
343
extern const char *first_global_object_name;
344
 
345
/* The first weak object in the file.  */
346
extern const char *weak_global_object_name;
347
 
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.  */
352
 
353
extern int current_function_is_leaf;
354
 
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.  */
358
 
359
extern int current_function_sp_is_unchanging;
360
 
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.  */
364
 
365
extern int current_function_uses_only_leaf_regs;
366
 
367
/* Default file in which to dump debug output.  */
368
 
369
#ifdef BUFSIZ
370
extern FILE *dump_file;
371
#endif
372
 
373
/* Nonnull if the insn currently being emitted was a COND_EXEC pattern.  */
374
extern rtx current_insn_predicate;
375
 
376
/* Last insn processed by final_scan_insn.  */
377
extern rtx current_output_insn;
378
 
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;
383
 
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;
388
 
389
extern bool first_function_block_is_cold;
390
 
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);
394
 
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);
398
 
399
/* User label prefix in effect for this compilation.  */
400
extern const char *user_label_prefix;
401
 
402
/* Default target function prologue and epilogue assembler output.  */
403
extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
404
 
405
/* Default target hook that outputs nothing to a stream.  */
406
extern void no_asm_to_stream (FILE *);
407
 
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 */
427
 
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
431
 
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
435
 
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
440
 
441
/* A helper function for default_elf_select_section and
442
   default_elf_unique_section.  Categorizes the DECL.  */
443
 
444
enum section_category
445
{
446
  SECCAT_TEXT,
447
 
448
  SECCAT_RODATA,
449
  SECCAT_RODATA_MERGE_STR,
450
  SECCAT_RODATA_MERGE_STR_INIT,
451
  SECCAT_RODATA_MERGE_CONST,
452
  SECCAT_SRODATA,
453
 
454
  SECCAT_DATA,
455
 
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,
469
 
470
  SECCAT_SDATA,
471
  SECCAT_TDATA,
472
 
473
  SECCAT_BSS,
474
  SECCAT_SBSS,
475
  SECCAT_TBSS,
476
 
477
  SECCAT_EMUTLS_VAR,
478
  SECCAT_EMUTLS_TMPL
479
};
480
 
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;
485
};
486
 
487
/* Information about a SECTION_NAMED section.  */
488
struct GTY(()) named_section {
489
  struct section_common common;
490
 
491
  /* The name of the section.  */
492
  const char *name;
493
 
494
  /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
495
     section is associated.  */
496
  tree decl;
497
};
498
 
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 *);
502
 
503
/* Information about a SECTION_UNNAMED section.  */
504
struct GTY(()) unnamed_section {
505
  struct section_common common;
506
 
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;
511
 
512
  /* The next entry in the chain of unnamed sections.  */
513
  section *next;
514
};
515
 
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.
521
 
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);
528
 
529
/* Information about a SECTION_NOSWITCH section.  */
530
struct GTY(()) noswitch_section {
531
  struct section_common common;
532
 
533
  /* The callback used to assemble decls in this section.  */
534
  noswitch_section_callback GTY ((skip)) callback;
535
};
536
 
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;
543
};
544
 
545
/* Return the style of section SECT.  */
546
#define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
547
 
548
struct object_block;
549
 
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;
565
 
566
extern GTY(()) section *in_section;
567
extern GTY(()) bool in_cold_section_p;
568
 
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);
582
 
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);
586
 
587
extern bool unlikely_text_section_p (section *);
588
extern void switch_to_section (section *);
589
extern void output_section_asm_op (const void *);
590
 
591
extern unsigned int default_section_type_flags (tree, const char *, int);
592
 
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);
599
 
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);
606
 
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);
629
 
630
extern void default_elf_asm_output_external (FILE *file, tree,
631
                                             const char *);
632
extern int maybe_assemble_visibility (tree);
633
 
634
extern int default_address_cost (rtx, bool);
635
 
636
/* dbxout helper functions */
637
#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
638
 
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);
646
 
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 *);
653
 
654
#endif
655
 
656
#endif /* ! GCC_OUTPUT_H */

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