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, 2010, 2011 5 Free Software Foundation, Inc. 6 7 This file is part of GCC. 8 9 GCC is free software; you can redistribute it and/or modify it under 10 the terms of the GNU General Public License as published by the Free 11 Software Foundation; either version 3, or (at your option) any later 12 version. 13 14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 15 WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 #ifndef GCC_OUTPUT_H 24 #define GCC_OUTPUT_H 25 26 /* Initialize data in final at the beginning of a compilation. */ 27 extern void init_final (const char *); 28 29 /* Enable APP processing of subsequent output. 30 Used before the output from an `asm' statement. */ 31 extern void app_enable (void); 32 33 /* Disable APP processing of subsequent output. 34 Called from varasm.c before most kinds of output. */ 35 extern void app_disable (void); 36 37 /* Return the number of slots filled in the current 38 delayed branch sequence (we don't count the insn needing the 39 delay slot). Zero if not in a delayed branch sequence. */ 40 extern int dbr_sequence_length (void); 41 42 /* Indicate that branch shortening hasn't yet been done. */ 43 extern void init_insn_lengths (void); 44 45 /* Obtain the current length of an insn. If branch shortening has been done, 46 get its actual length. Otherwise, get its maximum length. */ 47 extern int get_attr_length (rtx); 48 49 /* Obtain the current length of an insn. If branch shortening has been done, 50 get its actual length. Otherwise, get its minimum length. */ 51 extern int get_attr_min_length (rtx); 52 53 /* Make a pass over all insns and compute their actual lengths by shortening 54 any branches of variable length if possible. */ 55 extern void shorten_branches (rtx); 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'. */ 62 extern void final_start_function (rtx, 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. */ 67 extern void final_end_function (void); 68 69 /* Output assembler code for some insns: all or part of a function. */ 70 extern void final (rtx, 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. */ 75 extern rtx final_scan_insn (rtx, 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. */ 79 extern rtx alter_subreg (rtx *); 80 81 /* Print an operand using machine-dependent assembler syntax. */ 82 extern 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. */ 86 extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1; 87 88 /* Output a string of assembler code, substituting insn operands. 89 Defined in final.c. */ 90 extern void output_asm_insn (const char *, rtx *); 91 92 /* Compute a worst-case reference address of a branch so that it 93 can be safely used in the presence of aligned labels. 94 Defined in final.c. */ 95 extern int insn_current_reference_address (rtx); 96 97 /* Find the alignment associated with a CODE_LABEL. 98 Defined in final.c. */ 99 extern int label_to_alignment (rtx); 100 101 /* Find the alignment maximum skip associated with a CODE_LABEL. 102 Defined in final.c. */ 103 extern int label_to_max_skip (rtx); 104 105 /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ 106 extern void output_asm_label (rtx); 107 108 /* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */ 109 extern void mark_symbol_refs_as_used (rtx); 110 111 /* Print a memory reference operand for address X 112 using machine-dependent assembler syntax. */ 113 extern void output_address (rtx); 114 115 /* Print an integer constant expression in assembler syntax. 116 Addition and subtraction are the only arithmetic 117 that may appear in these expressions. */ 118 extern void output_addr_const (FILE *, rtx); 119 120 /* Output a string of assembler code, substituting numbers, strings 121 and fixed syntactic prefixes. */ 122 #if GCC_VERSION >= 3004 123 #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m) 124 /* This is a magic identifier which allows GCC to figure out the type 125 of HOST_WIDE_INT for %wd specifier checks. You must issue this 126 typedef before using the __asm_fprintf__ format attribute. */ 127 typedef HOST_WIDE_INT __gcc_host_wide_int__; 128 #else 129 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) 130 #endif 131 132 extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT); 133 extern void fprint_ul (FILE *, unsigned long); 134 extern int sprint_ul (char *, unsigned long); 135 136 extern void asm_fprintf (FILE *file, const char *p, ...) 137 ATTRIBUTE_ASM_FPRINTF(2, 3); 138 139 /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single 140 words. */ 141 extern void split_double (rtx, rtx *, rtx *); 142 143 /* Return nonzero if this function has no function calls. */ 144 extern int leaf_function_p (void); 145 146 /* Return 1 if branch is a forward branch. 147 Uses insn_shuid array, so it works only in the final pass. May be used by 148 output templates to add branch prediction hints, for example. */ 149 extern int final_forward_branch_p (rtx); 150 151 /* Return 1 if this function uses only the registers that can be 152 safely renumbered. */ 153 extern int only_leaf_regs_used (void); 154 155 /* Scan IN_RTX and its subexpressions, and renumber all regs into those 156 available in leaf functions. */ 157 extern void leaf_renumber_regs_insn (rtx); 158 159 /* Locate the proper template for the given insn-code. */ 160 extern const char *get_insn_template (int, rtx); 161 162 /* Functions in varasm.c. */ 163 164 /* Declare DECL to be a weak symbol. */ 165 extern void declare_weak (tree); 166 /* Merge weak status. */ 167 extern void merge_weak (tree, tree); 168 169 /* Emit any pending weak declarations. */ 170 extern void weak_finish (void); 171 172 /* Return the default TLS model for a given variable. */ 173 extern enum tls_model decl_default_tls_model (const_tree); 174 175 /* Decode an `asm' spec for a declaration as a register name. 176 Return the register number, or -1 if nothing specified, 177 or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, 178 or -3 if ASMSPEC is `cc' and is not recognized, 179 or -4 if ASMSPEC is `memory' and is not recognized. 180 Accept an exact spelling or a decimal number. 181 Prefixes such as % are optional. */ 182 extern int decode_reg_name (const char *); 183 184 /* Similar to decode_reg_name, but takes an extra parameter that is a 185 pointer to the number of (internal) registers described by the 186 external name. */ 187 extern int decode_reg_name_and_count (const char *, int *); 188 189 extern void assemble_alias (tree, tree); 190 191 extern void default_assemble_visibility (tree, int); 192 193 /* Output a string of literal assembler code 194 for an `asm' keyword used between functions. */ 195 extern void assemble_asm (tree); 196 197 /* Output assembler code for the constant pool of a function and associated 198 with defining the name of the function. DECL describes the function. 199 NAME is the function's name. For the constant pool, we use the current 200 constant pool data. */ 201 extern void assemble_start_function (tree, const char *); 202 203 /* Output assembler code associated with defining the size of the 204 function. DECL describes the function. NAME is the function's name. */ 205 extern void assemble_end_function (tree, const char *); 206 207 /* Assemble everything that is needed for a variable or function declaration. 208 Not used for automatic variables, and not used for function definitions. 209 Should not be called for variables of incomplete structure type. 210 211 TOP_LEVEL is nonzero if this variable has file scope. 212 AT_END is nonzero if this is the special handling, at end of compilation, 213 to define things that have had only tentative definitions. 214 DONT_OUTPUT_DATA if nonzero means don't actually output the 215 initial value (that will be done by the caller). */ 216 extern void assemble_variable (tree, int, int, int); 217 218 /* Compute the alignment of variable specified by DECL. 219 DONT_OUTPUT_DATA is from assemble_variable. */ 220 extern void align_variable (tree decl, bool dont_output_data); 221 222 /* Queue for outputting something to declare an external symbol to the 223 assembler. (Most assemblers don't need this, so we normally output 224 nothing.) Do nothing if DECL is not external. */ 225 extern void assemble_external (tree); 226 227 /* Assemble code to leave SIZE bytes of zeros. */ 228 extern void assemble_zeros (unsigned HOST_WIDE_INT); 229 230 /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ 231 extern void assemble_align (int); 232 233 /* Assemble a string constant with the specified C string as contents. */ 234 extern void assemble_string (const char *, int); 235 236 /* Similar, for calling a library function FUN. */ 237 extern void assemble_external_libcall (rtx); 238 239 /* Assemble a label named NAME. */ 240 extern void assemble_label (FILE *, const char *); 241 242 /* Output to FILE (an assembly file) a reference to NAME. If NAME 243 starts with a *, the rest of NAME is output verbatim. Otherwise 244 NAME is transformed in a target-specific way (usually by the 245 addition of an underscore). */ 246 extern void assemble_name_raw (FILE *, const char *); 247 248 /* Like assemble_name_raw, but should be used when NAME might refer to 249 an entity that is also represented as a tree (like a function or 250 variable). If NAME does refer to such an entity, that entity will 251 be marked as referenced. */ 252 extern void assemble_name (FILE *, const char *); 253 254 /* Return the assembler directive for creating a given kind of integer 255 object. SIZE is the number of bytes in the object and ALIGNED_P 256 indicates whether it is known to be aligned. Return NULL if the 257 assembly dialect has no such directive. 258 259 The returned string should be printed at the start of a new line and 260 be followed immediately by the object's initial value. */ 261 extern const char *integer_asm_op (int, int); 262 263 /* Use directive OP to assemble an integer object X. Print OP at the 264 start of the line, followed immediately by the value of X. */ 265 extern void assemble_integer_with_op (const char *, rtx); 266 267 /* The default implementation of the asm_out.integer target hook. */ 268 extern bool default_assemble_integer (rtx, unsigned int, int); 269 270 /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is 271 the alignment of the integer in bits. Return 1 if we were able to output 272 the constant, otherwise 0. If FORCE is nonzero the constant must 273 be outputable. */ 274 extern bool assemble_integer (rtx, unsigned, unsigned, int); 275 276 /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL) 277 is NULL. */ 278 extern section *get_named_text_section (tree, const char *, const char *); 279 280 /* An interface to assemble_integer for the common case in which a value is 281 fully aligned and must be printed. VALUE is the value of the integer 282 object and SIZE is the number of bytes it contains. */ 283 #define assemble_aligned_integer(SIZE, VALUE) \ 284 assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) 285 286 #ifdef REAL_VALUE_TYPE_SIZE 287 /* Assemble the floating-point constant D into an object of size MODE. */ 288 extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned); 289 #endif 290 291 /* Write the address of the entity given by SYMBOL to SEC. */ 292 extern void assemble_addr_to_section (rtx, section *); 293 294 /* Return the size of the constant pool. */ 295 extern int get_pool_size (void); 296 297 #ifdef HAVE_peephole 298 extern rtx peephole (rtx); 299 #endif 300 301 extern void output_shared_constant_pool (void); 302 303 extern void output_object_blocks (void); 304 305 extern void output_quoted_string (FILE *, const char *); 306 307 /* Whether a constructor CTOR is a valid static constant initializer if all 308 its elements are. This used to be internal to initializer_constant_valid_p 309 and has been exposed to let other functions like categorize_ctor_elements 310 evaluate the property while walking a constructor for other purposes. */ 311 312 extern bool constructor_static_from_elts_p (const_tree); 313 314 /* Return nonzero if VALUE is a valid constant-valued expression 315 for use in initializing a static variable; one that can be an 316 element of a "constant" initializer. 317 318 Return null_pointer_node if the value is absolute; 319 if it is relocatable, return the variable that determines the relocation. 320 We assume that VALUE has been folded as much as possible; 321 therefore, we do not need to check for such things as 322 arithmetic-combinations of integers. */ 323 extern tree initializer_constant_valid_p (tree, tree); 324 325 /* Return true if VALUE is a valid constant-valued expression 326 for use in initializing a static bit-field; one that can be 327 an element of a "constant" initializer. */ 328 extern bool initializer_constant_valid_for_bitfield_p (tree); 329 330 /* Output assembler code for constant EXP to FILE, with no label. 331 This includes the pseudo-op such as ".int" or ".byte", and a newline. 332 Assumes output_addressed_constants has been done on EXP already. 333 334 Generate exactly SIZE bytes of assembler data, padding at the end 335 with zeros if necessary. SIZE must always be specified. 336 337 ALIGN is the alignment in bits that may be assumed for the data. */ 338 extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int); 339 340 /* When outputting delayed branch sequences, this rtx holds the 341 sequence being output. It is null when no delayed branch 342 sequence is being output, so it can be used as a test in the 343 insn output code. 344 345 This variable is defined in final.c. */ 346 extern rtx final_sequence; 347 348 /* The line number of the beginning of the current function. Various 349 md code needs this so that it can output relative linenumbers. */ 350 351 #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ 352 extern int sdb_begin_function_line; 353 #endif 354 355 /* File in which assembler code is being written. */ 356 357 #ifdef BUFSIZ 358 extern FILE *asm_out_file; 359 #endif 360 361 /* The first global object in the file. */ 362 extern const char *first_global_object_name; 363 364 /* The first weak object in the file. */ 365 extern const char *weak_global_object_name; 366 367 /* Nonzero if function being compiled doesn't contain any calls 368 (ignoring the prologue and epilogue). This is set prior to 369 local register allocation and is valid for the remaining 370 compiler passes. */ 371 372 extern int current_function_is_leaf; 373 374 /* Nonzero if function being compiled doesn't modify the stack pointer 375 (ignoring the prologue and epilogue). This is only valid after 376 pass_stack_ptr_mod has run. */ 377 378 extern int current_function_sp_is_unchanging; 379 380 /* Nonzero if the function being compiled is a leaf function which only 381 uses leaf registers. This is valid after reload (specifically after 382 sched2) and is useful only if the port defines LEAF_REGISTERS. */ 383 384 extern int current_function_uses_only_leaf_regs; 385 386 /* Default file in which to dump debug output. */ 387 388 #ifdef BUFSIZ 389 extern FILE *dump_file; 390 #endif 391 392 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ 393 extern rtx current_insn_predicate; 394 395 /* Last insn processed by final_scan_insn. */ 396 extern rtx current_output_insn; 397 398 /* Nonzero while outputting an `asm' with operands. 399 This means that inconsistencies are the user's fault, so don't die. 400 The precise value is the insn being output, to pass to error_for_asm. */ 401 extern rtx this_is_asm_operands; 402 403 /* Carry information from ASM_DECLARE_OBJECT_NAME 404 to ASM_FINISH_DECLARE_OBJECT. */ 405 extern int size_directive_output; 406 extern tree last_assemble_variable_decl; 407 408 extern bool first_function_block_is_cold; 409 410 /* Decide whether DECL needs to be in a writable section. 411 RELOC is the same as for SELECT_SECTION. */ 412 extern bool decl_readonly_section (const_tree, int); 413 414 /* This can be used to compute RELOC for the function above, when 415 given a constant expression. */ 416 extern int compute_reloc_for_constant (tree); 417 418 /* User label prefix in effect for this compilation. */ 419 extern const char *user_label_prefix; 420 421 /* Default target function prologue and epilogue assembler output. */ 422 extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); 423 424 /* Default target function switched text sections. */ 425 extern void default_function_switched_text_sections (FILE *, tree, bool); 426 427 /* Default target hook that outputs nothing to a stream. */ 428 extern void no_asm_to_stream (FILE *); 429 430 /* Flags controlling properties of a section. */ 431 #define SECTION_ENTSIZE 0x000ff /* entity size in section */ 432 #define SECTION_CODE 0x00100 /* contains code */ 433 #define SECTION_WRITE 0x00200 /* data is writable */ 434 #define SECTION_DEBUG 0x00400 /* contains debug data */ 435 #define SECTION_LINKONCE 0x00800 /* is linkonce */ 436 #define SECTION_SMALL 0x01000 /* contains "small data" */ 437 #define SECTION_BSS 0x02000 /* contains zeros only */ 438 #define SECTION_FORGET 0x04000 /* forget that we've entered the section */ 439 #define SECTION_MERGE 0x08000 /* contains mergeable data */ 440 #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without 441 embedded zeros */ 442 #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ 443 #define SECTION_TLS 0x40000 /* contains thread-local storage */ 444 #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ 445 #define SECTION_DECLARED 0x100000 /* section has been used */ 446 #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */ 447 #define SECTION_COMMON 0x800000 /* contains common data */ 448 #define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */ 449 #define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */ 450 #define SECTION_MACH_DEP 0x4000000 /* subsequent bits reserved for target */ 451 452 /* This SECTION_STYLE is used for unnamed sections that we can switch 453 to using a special assembler directive. */ 454 #define SECTION_UNNAMED 0x000000 455 456 /* This SECTION_STYLE is used for named sections that we can switch 457 to using a general section directive. */ 458 #define SECTION_NAMED 0x200000 459 460 /* This SECTION_STYLE is used for sections that we cannot switch to at 461 all. The choice of section is implied by the directive that we use 462 to declare the object. */ 463 #define SECTION_NOSWITCH 0x400000 464 465 /* A helper function for default_elf_select_section and 466 default_elf_unique_section. Categorizes the DECL. */ 467 468 enum section_category 469 { 470 SECCAT_TEXT, 471 472 SECCAT_RODATA, 473 SECCAT_RODATA_MERGE_STR, 474 SECCAT_RODATA_MERGE_STR_INIT, 475 SECCAT_RODATA_MERGE_CONST, 476 SECCAT_SRODATA, 477 478 SECCAT_DATA, 479 480 /* To optimize loading of shared programs, define following subsections 481 of data section: 482 _REL Contains data that has relocations, so they get grouped 483 together and dynamic linker will visit fewer pages in memory. 484 _RO Contains data that is otherwise read-only. This is useful 485 with prelinking as most relocations won't be dynamically 486 linked and thus stay read only. 487 _LOCAL Marks data containing relocations only to local objects. 488 These relocations will get fully resolved by prelinking. */ 489 SECCAT_DATA_REL, 490 SECCAT_DATA_REL_LOCAL, 491 SECCAT_DATA_REL_RO, 492 SECCAT_DATA_REL_RO_LOCAL, 493 494 SECCAT_SDATA, 495 SECCAT_TDATA, 496 497 SECCAT_BSS, 498 SECCAT_SBSS, 499 SECCAT_TBSS 500 }; 501 502 /* Information that is provided by all instances of the section type. */ 503 struct GTY(()) section_common { 504 /* The set of SECTION_* flags that apply to this section. */ 505 unsigned int flags; 506 }; 507 508 /* Information about a SECTION_NAMED section. */ 509 struct GTY(()) named_section { 510 struct section_common common; 511 512 /* The name of the section. */ 513 const char *name; 514 515 /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the 516 section is associated. */ 517 tree decl; 518 }; 519 520 /* A callback that writes the assembly code for switching to an unnamed 521 section. The argument provides callback-specific data. */ 522 typedef void (*unnamed_section_callback) (const void *); 523 524 /* Information about a SECTION_UNNAMED section. */ 525 struct GTY(()) unnamed_section { 526 struct section_common common; 527 528 /* The callback used to switch to the section, and the data that 529 should be passed to the callback. */ 530 unnamed_section_callback GTY ((skip)) callback; 531 const void *GTY ((skip)) data; 532 533 /* The next entry in the chain of unnamed sections. */ 534 section *next; 535 }; 536 537 /* A callback that writes the assembly code for a decl in a 538 SECTION_NOSWITCH section. DECL is the decl that should be assembled 539 and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl 540 in bytes and ROUNDED is that size rounded up to the next 541 BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary. 542 543 Return true if the callback used DECL_ALIGN to set the object's 544 alignment. A false return value implies that we are relying 545 on the rounded size to align the decl. */ 546 typedef bool (*noswitch_section_callback) (tree decl, const char *name, 547 unsigned HOST_WIDE_INT size, 548 unsigned HOST_WIDE_INT rounded); 549 550 /* Information about a SECTION_NOSWITCH section. */ 551 struct GTY(()) noswitch_section { 552 struct section_common common; 553 554 /* The callback used to assemble decls in this section. */ 555 noswitch_section_callback GTY ((skip)) callback; 556 }; 557 558 /* Information about a section, which may be named or unnamed. */ 559 union GTY ((desc ("SECTION_STYLE (&(%h))"))) section { 560 struct section_common GTY ((skip)) common; 561 struct named_section GTY ((tag ("SECTION_NAMED"))) named; 562 struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed; 563 struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch; 564 }; 565 566 /* Return the style of section SECT. */ 567 #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK) 568 569 struct object_block; 570 571 /* Special well-known sections. */ 572 extern GTY(()) section *text_section; 573 extern GTY(()) section *data_section; 574 extern GTY(()) section *readonly_data_section; 575 extern GTY(()) section *sdata_section; 576 extern GTY(()) section *ctors_section; 577 extern GTY(()) section *dtors_section; 578 extern GTY(()) section *bss_section; 579 extern GTY(()) section *sbss_section; 580 extern GTY(()) section *exception_section; 581 extern GTY(()) section *eh_frame_section; 582 extern GTY(()) section *tls_comm_section; 583 extern GTY(()) section *comm_section; 584 extern GTY(()) section *lcomm_section; 585 extern GTY(()) section *bss_noswitch_section; 586 587 extern GTY(()) section *in_section; 588 extern GTY(()) bool in_cold_section_p; 589 590 extern section *get_unnamed_section (unsigned int, void (*) (const void *), 591 const void *); 592 extern section *get_section (const char *, unsigned int, tree); 593 extern section *get_named_section (tree, const char *, int); 594 extern section *get_variable_section (tree, bool); 595 extern void place_block_symbol (rtx); 596 extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, 597 enum tls_model); 598 extern section *mergeable_constant_section (enum machine_mode, 599 unsigned HOST_WIDE_INT, 600 unsigned int); 601 extern section *function_section (tree); 602 extern section *unlikely_text_section (void); 603 extern section *current_function_section (void); 604 605 /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if 606 not) section for PRIORITY. */ 607 extern section *get_cdtor_priority_section (int, bool); 608 609 extern bool unlikely_text_section_p (section *); 610 extern void switch_to_section (section *); 611 extern void output_section_asm_op (const void *); 612 613 extern void record_tm_clone_pair (tree, tree); 614 extern void finish_tm_clone_pairs (void); 615 extern tree get_tm_clone_pair (tree); 616 617 extern void default_asm_output_source_filename (FILE *, const char *); 618 extern void output_file_directive (FILE *, const char *); 619 620 extern unsigned int default_section_type_flags (tree, const char *, int); 621 622 extern bool have_global_bss_p (void); 623 extern void default_no_named_section (const char *, unsigned int, tree); 624 extern void default_elf_asm_named_section (const char *, unsigned int, tree); 625 extern enum section_category categorize_decl_for_section (const_tree, int); 626 extern void default_coff_asm_named_section (const char *, unsigned int, tree); 627 extern void default_pe_asm_named_section (const char *, unsigned int, tree); 628 629 extern void default_stabs_asm_out_destructor (rtx, int); 630 extern void default_named_section_asm_out_destructor (rtx, int); 631 extern void default_dtor_section_asm_out_destructor (rtx, int); 632 extern void default_stabs_asm_out_constructor (rtx, int); 633 extern void default_named_section_asm_out_constructor (rtx, int); 634 extern void default_ctor_section_asm_out_constructor (rtx, int); 635 636 extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); 637 extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); 638 extern void default_unique_section (tree, int); 639 extern section *default_function_rodata_section (tree); 640 extern section *default_no_function_rodata_section (tree); 641 extern section *default_clone_table_section (void); 642 extern section *default_select_rtx_section (enum machine_mode, rtx, 643 unsigned HOST_WIDE_INT); 644 extern section *default_elf_select_rtx_section (enum machine_mode, rtx, 645 unsigned HOST_WIDE_INT); 646 extern void default_encode_section_info (tree, rtx, int); 647 extern const char *default_strip_name_encoding (const char *); 648 extern void default_asm_output_anchor (rtx); 649 extern bool default_use_anchors_for_symbol_p (const_rtx); 650 extern bool default_binds_local_p (const_tree); 651 extern bool default_binds_local_p_1 (const_tree, int); 652 extern void default_globalize_label (FILE *, const char *); 653 extern void default_globalize_decl_name (FILE *, tree); 654 extern void default_emit_unwind_label (FILE *, tree, int, int); 655 extern void default_emit_except_table_label (FILE *); 656 extern void default_generate_internal_label (char *, const char *, 657 unsigned long); 658 extern void default_internal_label (FILE *, const char *, unsigned long); 659 extern void default_asm_declare_constant_name (FILE *, const char *, 660 const_tree, HOST_WIDE_INT); 661 extern void default_file_start (void); 662 extern void file_end_indicate_exec_stack (void); 663 extern void file_end_indicate_split_stack (void); 664 665 extern void default_elf_asm_output_external (FILE *file, tree, 666 const char *); 667 extern void default_elf_asm_output_limited_string (FILE *, const char *); 668 extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int); 669 extern void default_elf_internal_label (FILE *, const char *, unsigned long); 670 671 extern void default_elf_init_array_asm_out_constructor (rtx, int); 672 extern void default_elf_fini_array_asm_out_destructor (rtx, int); 673 extern int maybe_assemble_visibility (tree); 674 675 extern int default_address_cost (rtx, bool); 676 677 /* Output stack usage information. */ 678 extern void output_stack_usage (void); 679 680 /* dbxout helper functions */ 681 #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO 682 683 extern void dbxout_int (int); 684 extern void dbxout_stabd (int, int); 685 extern void dbxout_begin_stabn (int); 686 extern void dbxout_begin_stabn_sline (int); 687 extern void dbxout_begin_empty_stabs (int); 688 extern void dbxout_begin_simple_stabs (const char *, int); 689 extern void dbxout_begin_simple_stabs_desc (const char *, int, int); 690 691 extern void dbxout_stab_value_zero (void); 692 extern void dbxout_stab_value_label (const char *); 693 extern void dbxout_stab_value_label_diff (const char *, const char *); 694 extern void dbxout_stab_value_internal_label (const char *, int *); 695 extern void dbxout_stab_value_internal_label_diff (const char *, int *, 696 const char *); 697 698 #endif 699 700 #endif /* ! GCC_OUTPUT_H */ 701