1/* Declarations for insn-output.c. These functions are defined in recog.c, 2 final.c, and varasm.c. 3 Copyright (C) 1987, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 4 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify it under 9the terms of the GNU General Public License as published by the Free 10Software Foundation; either version 3, or (at your option) any later 11version. 12 13GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14WARRANTY; without even the implied warranty of MERCHANTABILITY or 15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16for more details. 17 18You should have received a copy of the GNU General Public License 19along 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. */ 26extern void init_final (const char *); 27 28/* Enable APP processing of subsequent output. 29 Used before the output from an `asm' statement. */ 30extern void app_enable (void); 31 32/* Disable APP processing of subsequent output. 33 Called from varasm.c before most kinds of output. */ 34extern 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. */ 39extern int dbr_sequence_length (void); 40 41/* Indicate that branch shortening hasn't yet been done. */ 42extern 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. */ 46extern 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. */ 50extern 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. */ 54extern 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'. */ 61extern 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. */ 66extern void final_end_function (void); 67 68/* Output assembler code for some insns: all or part of a function. */ 69extern 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. */ 74extern 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. */ 78extern 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. */ 82extern 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. */ 86extern 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. */ 91extern int insn_current_reference_address (rtx); 92 93/* Find the alignment associated with a CODE_LABEL. 94 Defined in final.c. */ 95extern int label_to_alignment (rtx); 96 97/* Find the alignment maximum skip associated with a CODE_LABEL. 98 Defined in final.c. */ 99extern int label_to_max_skip (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 108 using machine-dependent assembler syntax. */ 109extern 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. */ 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/* 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. */ 123typedef HOST_WIDE_INT __gcc_host_wide_int__; 124#else 125#define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) 126#endif 127 128extern 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. */ 133extern void split_double (rtx, rtx *, rtx *); 134 135/* Return nonzero if this function has no function calls. */ 136extern 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. */ 141extern int final_forward_branch_p (rtx); 142 143/* Return 1 if this function uses only the registers that can be 144 safely renumbered. */ 145extern 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. */ 149extern void leaf_renumber_regs_insn (rtx); 150 151/* Locate the proper template for the given insn-code. */ 152extern const char *get_insn_template (int, rtx); 153 154/* Functions in varasm.c. */ 155 156/* Declare DECL to be a weak symbol. */ 157extern void declare_weak (tree); 158/* Merge weak status. */ 159extern void merge_weak (tree, tree); 160 161/* Emit any pending weak declarations. */ 162extern void weak_finish (void); 163 164/* Emit any pending emutls declarations and initializations. */ 165extern 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. */ 174extern int decode_reg_name (const char *); 175 176extern void assemble_alias (tree, tree); 177 178extern void default_assemble_visibility (tree, int); 179 180/* Output a string of literal assembler code 181 for an `asm' keyword used between functions. */ 182extern 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. */ 188extern 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. */ 192extern 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). */ 203extern 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. */ 207extern 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. */ 212extern void assemble_external (tree); 213 214/* Assemble code to leave SIZE bytes of zeros. */ 215extern void assemble_zeros (unsigned HOST_WIDE_INT); 216 217/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ 218extern void assemble_align (int); 219 220/* Assemble a string constant with the specified C string as contents. */ 221extern void assemble_string (const char *, int); 222 223/* Similar, for calling a library function FUN. */ 224extern void assemble_external_libcall (rtx); 225 226/* Assemble a label named NAME. */ 227extern 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). */ 233extern 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. */ 239extern 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. */ 248extern 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. */ 252extern void assemble_integer_with_op (const char *, rtx); 253 254/* The default implementation of the asm_out.integer target hook. */ 255extern 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. */ 261extern 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. */ 271extern 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. */ 275extern void assemble_addr_to_section (rtx, section *); 276 277/* Return the size of the constant pool. */ 278extern int get_pool_size (void); 279 280#ifdef HAVE_peephole 281extern rtx peephole (rtx); 282#endif 283 284extern void output_shared_constant_pool (void); 285 286extern 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 293extern 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. */ 304extern 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. */ 309extern 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. */ 319extern 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. */ 327extern 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. */ 333extern int sdb_begin_function_line; 334#endif 335 336/* File in which assembler code is being written. */ 337 338#ifdef BUFSIZ 339extern FILE *asm_out_file; 340#endif 341 342/* The first global object in the file. */ 343extern const char *first_global_object_name; 344 345/* The first weak object in the file. */ 346extern 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 353extern 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 359extern 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 365extern int current_function_uses_only_leaf_regs; 366 367/* Default file in which to dump debug output. */ 368 369#ifdef BUFSIZ 370extern FILE *dump_file; 371#endif 372 373/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ 374extern rtx current_insn_predicate; 375 376/* Last insn processed by final_scan_insn. */ 377extern 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. */ 382extern rtx this_is_asm_operands; 383 384/* Carry information from ASM_DECLARE_OBJECT_NAME 385 to ASM_FINISH_DECLARE_OBJECT. */ 386extern int size_directive_output; 387extern tree last_assemble_variable_decl; 388 389extern 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. */ 393extern 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. */ 397extern int compute_reloc_for_constant (tree); 398 399/* User label prefix in effect for this compilation. */ 400extern const char *user_label_prefix; 401 402/* Default target function prologue and epilogue assembler output. */ 403extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); 404 405/* Default target hook that outputs nothing to a stream. */ 406extern 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 444enum 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. */ 482struct 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. */ 488struct 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. */ 501typedef void (*unnamed_section_callback) (const void *); 502 503/* Information about a SECTION_UNNAMED section. */ 504struct 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. */ 525typedef 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. */ 530struct 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. */ 538union 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 548struct object_block; 549 550/* Special well-known sections. */ 551extern GTY(()) section *text_section; 552extern GTY(()) section *data_section; 553extern GTY(()) section *readonly_data_section; 554extern GTY(()) section *sdata_section; 555extern GTY(()) section *ctors_section; 556extern GTY(()) section *dtors_section; 557extern GTY(()) section *bss_section; 558extern GTY(()) section *sbss_section; 559extern GTY(()) section *exception_section; 560extern GTY(()) section *eh_frame_section; 561extern GTY(()) section *tls_comm_section; 562extern GTY(()) section *comm_section; 563extern GTY(()) section *lcomm_section; 564extern GTY(()) section *bss_noswitch_section; 565 566extern GTY(()) section *in_section; 567extern GTY(()) bool in_cold_section_p; 568 569extern section *get_unnamed_section (unsigned int, void (*) (const void *), 570 const void *); 571extern section *get_section (const char *, unsigned int, tree); 572extern section *get_named_section (tree, const char *, int); 573extern void place_block_symbol (rtx); 574extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, 575 enum tls_model); 576extern section *mergeable_constant_section (enum machine_mode, 577 unsigned HOST_WIDE_INT, 578 unsigned int); 579extern section *function_section (tree); 580extern section *unlikely_text_section (void); 581extern section *current_function_section (void); 582 583/* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if 584 not) section for PRIORITY. */ 585extern section *get_cdtor_priority_section (int, bool); 586 587extern bool unlikely_text_section_p (section *); 588extern void switch_to_section (section *); 589extern void output_section_asm_op (const void *); 590 591extern unsigned int default_section_type_flags (tree, const char *, int); 592 593extern bool have_global_bss_p (void); 594extern void default_no_named_section (const char *, unsigned int, tree); 595extern void default_elf_asm_named_section (const char *, unsigned int, tree); 596extern enum section_category categorize_decl_for_section (const_tree, int); 597extern void default_coff_asm_named_section (const char *, unsigned int, tree); 598extern void default_pe_asm_named_section (const char *, unsigned int, tree); 599 600extern void default_stabs_asm_out_destructor (rtx, int); 601extern void default_named_section_asm_out_destructor (rtx, int); 602extern void default_dtor_section_asm_out_destructor (rtx, int); 603extern void default_stabs_asm_out_constructor (rtx, int); 604extern void default_named_section_asm_out_constructor (rtx, int); 605extern void default_ctor_section_asm_out_constructor (rtx, int); 606 607extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); 608extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); 609extern void default_unique_section (tree, int); 610extern section *default_function_rodata_section (tree); 611extern section *default_no_function_rodata_section (tree); 612extern section *default_select_rtx_section (enum machine_mode, rtx, 613 unsigned HOST_WIDE_INT); 614extern section *default_elf_select_rtx_section (enum machine_mode, rtx, 615 unsigned HOST_WIDE_INT); 616extern void default_encode_section_info (tree, rtx, int); 617extern const char *default_strip_name_encoding (const char *); 618extern void default_asm_output_anchor (rtx); 619extern bool default_use_anchors_for_symbol_p (const_rtx); 620extern bool default_binds_local_p (const_tree); 621extern bool default_binds_local_p_1 (const_tree, int); 622extern void default_globalize_label (FILE *, const char *); 623extern void default_globalize_decl_name (FILE *, tree); 624extern void default_emit_unwind_label (FILE *, tree, int, int); 625extern void default_emit_except_table_label (FILE *); 626extern void default_internal_label (FILE *, const char *, unsigned long); 627extern void default_file_start (void); 628extern void file_end_indicate_exec_stack (void); 629 630extern void default_elf_asm_output_external (FILE *file, tree, 631 const char *); 632extern int maybe_assemble_visibility (tree); 633 634extern int default_address_cost (rtx, bool); 635 636/* dbxout helper functions */ 637#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO 638 639extern void dbxout_int (int); 640extern void dbxout_stabd (int, int); 641extern void dbxout_begin_stabn (int); 642extern void dbxout_begin_stabn_sline (int); 643extern void dbxout_begin_empty_stabs (int); 644extern void dbxout_begin_simple_stabs (const char *, int); 645extern void dbxout_begin_simple_stabs_desc (const char *, int, int); 646 647extern void dbxout_stab_value_zero (void); 648extern void dbxout_stab_value_label (const char *); 649extern void dbxout_stab_value_label_diff (const char *, const char *); 650extern void dbxout_stab_value_internal_label (const char *, int *); 651extern void dbxout_stab_value_internal_label_diff (const char *, int *, 652 const char *); 653 654#endif 655 656#endif /* ! GCC_OUTPUT_H */ 657