+/* Declarations for insn-output.c. These functions are defined in recog.c,
+ final.c, and varasm.c.
+ Copyright (C) 1987, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_OUTPUT_H
+#define GCC_OUTPUT_H
+
+/* Initialize data in final at the beginning of a compilation. */
+extern void init_final (const char *);
+
+/* Enable APP processing of subsequent output.
+ Used before the output from an `asm' statement. */
+extern void app_enable (void);
+
+/* Disable APP processing of subsequent output.
+ Called from varasm.c before most kinds of output. */
+extern void app_disable (void);
+
+/* Return the number of slots filled in the current
+ delayed branch sequence (we don't count the insn needing the
+ delay slot). Zero if not in a delayed branch sequence. */
+extern int dbr_sequence_length (void);
+
+/* Indicate that branch shortening hasn't yet been done. */
+extern void init_insn_lengths (void);
+
+/* Obtain the current length of an insn. If branch shortening has been done,
+ get its actual length. Otherwise, get its maximum length. */
+extern int get_attr_length (rtx);
+
+/* Obtain the current length of an insn. If branch shortening has been done,
+ get its actual length. Otherwise, get its minimum length. */
+extern int get_attr_min_length (rtx);
+
+/* Make a pass over all insns and compute their actual lengths by shortening
+ any branches of variable length if possible. */
+extern void shorten_branches (rtx);
+
+/* Output assembler code for the start of a function,
+ and initialize some of the variables in this file
+ for the new function. The label for the function and associated
+ assembler pseudo-ops have already been output in
+ `assemble_start_function'. */
+extern void final_start_function (rtx, FILE *, int);
+
+/* Output assembler code for the end of a function.
+ For clarity, args are same as those of `final_start_function'
+ even though not all of them are needed. */
+extern void final_end_function (void);
+
+/* Output assembler code for some insns: all or part of a function. */
+extern void final (rtx, FILE *, int);
+
+/* The final scan for one insn, INSN. Args are same as in `final', except
+ that INSN is the insn being scanned. Value returned is the next insn to
+ be scanned. */
+extern rtx final_scan_insn (rtx, FILE *, int, int, int *);
+
+/* Replace a SUBREG with a REG or a MEM, based on the thing it is a
+ subreg of. */
+extern rtx alter_subreg (rtx *);
+
+/* Report inconsistency between the assembler template and the operands.
+ In an `asm', it's the user's fault; otherwise, the compiler's fault. */
+extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1;
+
+/* Output a string of assembler code, substituting insn operands.
+ Defined in final.c. */
+extern void output_asm_insn (const char *, rtx *);
+
+/* Compute a worst-case reference address of a branch so that it
+ can be safely used in the presence of aligned labels.
+ Defined in final.c. */
+extern int insn_current_reference_address (rtx);
+
+/* Find the alignment associated with a CODE_LABEL.
+ Defined in final.c. */
+extern int label_to_alignment (rtx);
+
+/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
+extern void output_asm_label (rtx);
+
+/* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */
+extern void mark_symbol_refs_as_used (rtx);
+
+/* Print a memory reference operand for address X
+ using machine-dependent assembler syntax. */
+extern void output_address (rtx);
+
+/* Print an integer constant expression in assembler syntax.
+ Addition and subtraction are the only arithmetic
+ that may appear in these expressions. */
+extern void output_addr_const (FILE *, rtx);
+
+/* Output a string of assembler code, substituting numbers, strings
+ and fixed syntactic prefixes. */
+#if GCC_VERSION >= 3004
+#define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
+/* This is a magic identifier which allows GCC to figure out the type
+ of HOST_WIDE_INT for %wd specifier checks. You must issue this
+ typedef before using the __asm_fprintf__ format attribute. */
+typedef HOST_WIDE_INT __gcc_host_wide_int__;
+#else
+#define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
+#endif
+
+extern void asm_fprintf (FILE *file, const char *p, ...)
+ ATTRIBUTE_ASM_FPRINTF(2, 3);
+
+/* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
+ words. */
+extern void split_double (rtx, rtx *, rtx *);
+
+/* Return nonzero if this function has no function calls. */
+extern int leaf_function_p (void);
+
+/* Return 1 if branch is a forward branch.
+ Uses insn_shuid array, so it works only in the final pass. May be used by
+ output templates to add branch prediction hints, for example. */
+extern int final_forward_branch_p (rtx);
+
+/* Return 1 if this function uses only the registers that can be
+ safely renumbered. */
+extern int only_leaf_regs_used (void);
+
+/* Scan IN_RTX and its subexpressions, and renumber all regs into those
+ available in leaf functions. */
+extern void leaf_renumber_regs_insn (rtx);
+
+/* Locate the proper template for the given insn-code. */
+extern const char *get_insn_template (int, rtx);
+
+/* Functions in varasm.c. */
+
+/* Declare DECL to be a weak symbol. */
+extern void declare_weak (tree);
+/* Merge weak status. */
+extern void merge_weak (tree, tree);
+
+/* Emit any pending weak declarations. */
+extern void weak_finish (void);
+
+/* Emit any pending emutls declarations and initializations. */
+extern void emutls_finish (void);
+
+/* Decode an `asm' spec for a declaration as a register name.
+ Return the register number, or -1 if nothing specified,
+ or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
+ or -3 if ASMSPEC is `cc' and is not recognized,
+ or -4 if ASMSPEC is `memory' and is not recognized.
+ Accept an exact spelling or a decimal number.
+ Prefixes such as % are optional. */
+extern int decode_reg_name (const char *);
+
+extern void assemble_alias (tree, tree);
+
+extern void default_assemble_visibility (tree, int);
+
+/* Output a string of literal assembler code
+ for an `asm' keyword used between functions. */
+extern void assemble_asm (tree);
+
+/* Output assembler code for the constant pool of a function and associated
+ with defining the name of the function. DECL describes the function.
+ NAME is the function's name. For the constant pool, we use the current
+ constant pool data. */
+extern void assemble_start_function (tree, const char *);
+
+/* Output assembler code associated with defining the size of the
+ function. DECL describes the function. NAME is the function's name. */
+extern void assemble_end_function (tree, const char *);
+
+/* Assemble everything that is needed for a variable or function declaration.
+ Not used for automatic variables, and not used for function definitions.
+ Should not be called for variables of incomplete structure type.
+
+ TOP_LEVEL is nonzero if this variable has file scope.
+ AT_END is nonzero if this is the special handling, at end of compilation,
+ to define things that have had only tentative definitions.
+ DONT_OUTPUT_DATA if nonzero means don't actually output the
+ initial value (that will be done by the caller). */
+extern void assemble_variable (tree, int, int, int);
+
+/* Compute the alignment of variable specified by DECL.
+ DONT_OUTPUT_DATA is from assemble_variable. */
+extern void align_variable (tree decl, bool dont_output_data);
+
+/* Queue for outputting something to declare an external symbol to the
+ assembler. (Most assemblers don't need this, so we normally output
+ nothing.) Do nothing if DECL is not external. */
+extern void assemble_external (tree);
+
+/* Assemble code to leave SIZE bytes of zeros. */
+extern void assemble_zeros (unsigned HOST_WIDE_INT);
+
+/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
+extern void assemble_align (int);
+
+/* Assemble a string constant with the specified C string as contents. */
+extern void assemble_string (const char *, int);
+
+/* Similar, for calling a library function FUN. */
+extern void assemble_external_libcall (rtx);
+
+/* Assemble a label named NAME. */
+extern void assemble_label (const char *);
+
+/* Output to FILE (an assembly file) a reference to NAME. If NAME
+ starts with a *, the rest of NAME is output verbatim. Otherwise
+ NAME is transformed in a target-specific way (usually by the
+ addition of an underscore). */
+extern void assemble_name_raw (FILE *, const char *);
+
+/* Like assemble_name_raw, but should be used when NAME might refer to
+ an entity that is also represented as a tree (like a function or
+ variable). If NAME does refer to such an entity, that entity will
+ be marked as referenced. */
+extern void assemble_name (FILE *, const char *);
+
+/* Return the assembler directive for creating a given kind of integer
+ object. SIZE is the number of bytes in the object and ALIGNED_P
+ indicates whether it is known to be aligned. Return NULL if the
+ assembly dialect has no such directive.
+
+ The returned string should be printed at the start of a new line and
+ be followed immediately by the object's initial value. */
+extern const char *integer_asm_op (int, int);
+
+/* Use directive OP to assemble an integer object X. Print OP at the
+ start of the line, followed immediately by the value of X. */
+extern void assemble_integer_with_op (const char *, rtx);
+
+/* The default implementation of the asm_out.integer target hook. */
+extern bool default_assemble_integer (rtx, unsigned int, int);
+
+/* Assemble the integer constant X into an object of SIZE bytes. ALIGN is
+ the alignment of the integer in bits. Return 1 if we were able to output
+ the constant, otherwise 0. If FORCE is nonzero the constant must
+ be outputable. */
+extern bool assemble_integer (rtx, unsigned, unsigned, int);
+
+/* An interface to assemble_integer for the common case in which a value is
+ fully aligned and must be printed. VALUE is the value of the integer
+ object and SIZE is the number of bytes it contains. */
+#define assemble_aligned_integer(SIZE, VALUE) \
+ assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
+
+#ifdef REAL_VALUE_TYPE_SIZE
+/* Assemble the floating-point constant D into an object of size MODE. */
+extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
+#endif
+
+/* Write the address of the entity given by SYMBOL to SEC. */
+extern void assemble_addr_to_section (rtx, section *);
+
+/* Return the size of the constant pool. */
+extern int get_pool_size (void);
+
+#ifdef HAVE_peephole
+extern rtx peephole (rtx);
+#endif
+
+extern void output_shared_constant_pool (void);
+
+extern void output_object_blocks (void);
+
+/* Whether a constructor CTOR is a valid static constant initializer if all
+ its elements are. This used to be internal to initializer_constant_valid_p
+ and has been exposed to let other functions like categorize_ctor_elements
+ evaluate the property while walking a constructor for other purposes. */
+
+extern bool constructor_static_from_elts_p (const_tree);
+
+/* Return nonzero if VALUE is a valid constant-valued expression
+ for use in initializing a static variable; one that can be an
+ element of a "constant" initializer.
+
+ Return null_pointer_node if the value is absolute;
+ if it is relocatable, return the variable that determines the relocation.
+ We assume that VALUE has been folded as much as possible;
+ therefore, we do not need to check for such things as
+ arithmetic-combinations of integers. */
+extern tree initializer_constant_valid_p (tree, tree);
+
+/* Output assembler code for constant EXP to FILE, with no label.
+ This includes the pseudo-op such as ".int" or ".byte", and a newline.
+ Assumes output_addressed_constants has been done on EXP already.
+
+ Generate exactly SIZE bytes of assembler data, padding at the end
+ with zeros if necessary. SIZE must always be specified.
+
+ ALIGN is the alignment in bits that may be assumed for the data. */
+extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int);
+
+/* When outputting delayed branch sequences, this rtx holds the
+ sequence being output. It is null when no delayed branch
+ sequence is being output, so it can be used as a test in the
+ insn output code.
+
+ This variable is defined in final.c. */
+extern rtx final_sequence;
+
+/* The line number of the beginning of the current function. Various
+ md code needs this so that it can output relative linenumbers. */
+
+#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
+extern int sdb_begin_function_line;
+#endif
+
+/* File in which assembler code is being written. */
+
+#ifdef BUFSIZ
+extern FILE *asm_out_file;
+#endif
+
+/* The first global object in the file. */
+extern const char *first_global_object_name;
+
+/* The first weak object in the file. */
+extern const char *weak_global_object_name;
+
+/* Nonzero if function being compiled doesn't contain any calls
+ (ignoring the prologue and epilogue). This is set prior to
+ local register allocation and is valid for the remaining
+ compiler passes. */
+
+extern int current_function_is_leaf;
+
+/* Nonzero if function being compiled doesn't modify the stack pointer
+ (ignoring the prologue and epilogue). This is only valid after
+ pass_stack_ptr_mod has run. */
+
+extern int current_function_sp_is_unchanging;
+
+/* Nonzero if the function being compiled is a leaf function which only
+ uses leaf registers. This is valid after reload (specifically after
+ sched2) and is useful only if the port defines LEAF_REGISTERS. */
+
+extern int current_function_uses_only_leaf_regs;
+
+/* Default file in which to dump debug output. */
+
+#ifdef BUFSIZ
+extern FILE *dump_file;
+#endif
+
+/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
+extern rtx current_insn_predicate;
+
+/* Last insn processed by final_scan_insn. */
+extern rtx current_output_insn;
+
+/* Nonzero while outputting an `asm' with operands.
+ This means that inconsistencies are the user's fault, so don't die.
+ The precise value is the insn being output, to pass to error_for_asm. */
+extern rtx this_is_asm_operands;
+
+/* Carry information from ASM_DECLARE_OBJECT_NAME
+ to ASM_FINISH_DECLARE_OBJECT. */
+extern int size_directive_output;
+extern tree last_assemble_variable_decl;
+
+extern bool first_function_block_is_cold;
+
+/* Decide whether DECL needs to be in a writable section.
+ RELOC is the same as for SELECT_SECTION. */
+extern bool decl_readonly_section (const_tree, int);
+
+/* This can be used to compute RELOC for the function above, when
+ given a constant expression. */
+extern int compute_reloc_for_constant (tree);
+
+/* User label prefix in effect for this compilation. */
+extern const char *user_label_prefix;
+
+/* Default target function prologue and epilogue assembler output. */
+extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
+
+/* Default target hook that outputs nothing to a stream. */
+extern void no_asm_to_stream (FILE *);
+
+/* Flags controlling properties of a section. */
+#define SECTION_ENTSIZE 0x000ff /* entity size in section */
+#define SECTION_CODE 0x00100 /* contains code */
+#define SECTION_WRITE 0x00200 /* data is writable */
+#define SECTION_DEBUG 0x00400 /* contains debug data */
+#define SECTION_LINKONCE 0x00800 /* is linkonce */
+#define SECTION_SMALL 0x01000 /* contains "small data" */
+#define SECTION_BSS 0x02000 /* contains zeros only */
+#define SECTION_FORGET 0x04000 /* forget that we've entered the section */
+#define SECTION_MERGE 0x08000 /* contains mergeable data */
+#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without
+ embedded zeros */
+#define SECTION_OVERRIDE 0x20000 /* allow override of default flags */
+#define SECTION_TLS 0x40000 /* contains thread-local storage */
+#define SECTION_NOTYPE 0x80000 /* don't output @progbits */
+#define SECTION_DECLARED 0x100000 /* section has been used */
+#define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */
+#define SECTION_COMMON 0x800000 /* contains common data */
+#define SECTION_MACH_DEP 0x1000000 /* subsequent bits reserved for target */
+
+/* This SECTION_STYLE is used for unnamed sections that we can switch
+ to using a special assembler directive. */
+#define SECTION_UNNAMED 0x000000
+
+/* This SECTION_STYLE is used for named sections that we can switch
+ to using a general section directive. */
+#define SECTION_NAMED 0x200000
+
+/* This SECTION_STYLE is used for sections that we cannot switch to at
+ all. The choice of section is implied by the directive that we use
+ to declare the object. */
+#define SECTION_NOSWITCH 0x400000
+
+/* A helper function for default_elf_select_section and
+ default_elf_unique_section. Categorizes the DECL. */
+
+enum section_category
+{
+ SECCAT_TEXT,
+
+ SECCAT_RODATA,
+ SECCAT_RODATA_MERGE_STR,
+ SECCAT_RODATA_MERGE_STR_INIT,
+ SECCAT_RODATA_MERGE_CONST,
+ SECCAT_SRODATA,
+
+ SECCAT_DATA,
+
+ /* To optimize loading of shared programs, define following subsections
+ of data section:
+ _REL Contains data that has relocations, so they get grouped
+ together and dynamic linker will visit fewer pages in memory.
+ _RO Contains data that is otherwise read-only. This is useful
+ with prelinking as most relocations won't be dynamically
+ linked and thus stay read only.
+ _LOCAL Marks data containing relocations only to local objects.
+ These relocations will get fully resolved by prelinking. */
+ SECCAT_DATA_REL,
+ SECCAT_DATA_REL_LOCAL,
+ SECCAT_DATA_REL_RO,
+ SECCAT_DATA_REL_RO_LOCAL,
+
+ SECCAT_SDATA,
+ SECCAT_TDATA,
+
+ SECCAT_BSS,
+ SECCAT_SBSS,
+ SECCAT_TBSS,
+
+ SECCAT_EMUTLS_VAR,
+ SECCAT_EMUTLS_TMPL
+};
+
+/* Information that is provided by all instances of the section type. */
+struct section_common GTY(()) {
+ /* The set of SECTION_* flags that apply to this section. */
+ unsigned int flags;
+};
+
+/* Information about a SECTION_NAMED section. */
+struct named_section GTY(()) {
+ struct section_common common;
+
+ /* The name of the section. */
+ const char *name;
+
+ /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
+ section is associated. */
+ tree decl;
+};
+
+/* A callback that writes the assembly code for switching to an unnamed
+ section. The argument provides callback-specific data. */
+typedef void (*unnamed_section_callback) (const void *);
+
+/* Information about a SECTION_UNNAMED section. */
+struct unnamed_section GTY(()) {
+ struct section_common common;
+
+ /* The callback used to switch to the section, and the data that
+ should be passed to the callback. */
+ unnamed_section_callback GTY ((skip)) callback;
+ const void *GTY ((skip)) data;
+
+ /* The next entry in the chain of unnamed sections. */
+ section *next;
+};
+
+/* A callback that writes the assembly code for a decl in a
+ SECTION_NOSWITCH section. DECL is the decl that should be assembled
+ and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl
+ in bytes and ROUNDED is that size rounded up to the next
+ BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
+
+ Return true if the callback used DECL_ALIGN to set the object's
+ alignment. A false return value implies that we are relying
+ on the rounded size to align the decl. */
+typedef bool (*noswitch_section_callback) (tree decl, const char *name,
+ unsigned HOST_WIDE_INT size,
+ unsigned HOST_WIDE_INT rounded);
+
+/* Information about a SECTION_NOSWITCH section. */
+struct noswitch_section GTY(()) {
+ struct section_common common;
+
+ /* The callback used to assemble decls in this section. */
+ noswitch_section_callback GTY ((skip)) callback;
+};
+
+/* Information about a section, which may be named or unnamed. */
+union section GTY ((desc ("SECTION_STYLE (&(%h))")))
+{
+ struct section_common GTY ((skip)) common;
+ struct named_section GTY ((tag ("SECTION_NAMED"))) named;
+ struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
+ struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
+};
+
+/* Return the style of section SECT. */
+#define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
+
+struct object_block;
+
+/* Special well-known sections. */
+extern GTY(()) section *text_section;
+extern GTY(()) section *data_section;
+extern GTY(()) section *readonly_data_section;
+extern GTY(()) section *sdata_section;
+extern GTY(()) section *ctors_section;
+extern GTY(()) section *dtors_section;
+extern GTY(()) section *bss_section;
+extern GTY(()) section *sbss_section;
+extern GTY(()) section *exception_section;
+extern GTY(()) section *eh_frame_section;
+extern GTY(()) section *tls_comm_section;
+extern GTY(()) section *comm_section;
+extern GTY(()) section *lcomm_section;
+extern GTY(()) section *bss_noswitch_section;
+
+extern GTY(()) section *in_section;
+extern GTY(()) bool in_cold_section_p;
+
+extern section *get_unnamed_section (unsigned int, void (*) (const void *),
+ const void *);
+extern section *get_section (const char *, unsigned int, tree);
+extern section *get_named_section (tree, const char *, int);
+extern void place_block_symbol (rtx);
+extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
+ enum tls_model);
+extern section *mergeable_constant_section (enum machine_mode,
+ unsigned HOST_WIDE_INT,
+ unsigned int);
+extern section *function_section (tree);
+extern section *unlikely_text_section (void);
+extern section *current_function_section (void);
+
+/* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
+ not) section for PRIORITY. */
+extern section *get_cdtor_priority_section (int, bool);
+
+extern bool unlikely_text_section_p (section *);
+extern void switch_to_section (section *);
+extern void output_section_asm_op (const void *);
+
+extern unsigned int default_section_type_flags (tree, const char *, int);
+
+extern bool have_global_bss_p (void);
+extern void default_no_named_section (const char *, unsigned int, tree);
+extern void default_elf_asm_named_section (const char *, unsigned int, tree);
+extern enum section_category categorize_decl_for_section (const_tree, int);
+extern void default_coff_asm_named_section (const char *, unsigned int, tree);
+extern void default_pe_asm_named_section (const char *, unsigned int, tree);
+
+extern void default_stabs_asm_out_destructor (rtx, int);
+extern void default_named_section_asm_out_destructor (rtx, int);
+extern void default_dtor_section_asm_out_destructor (rtx, int);
+extern void default_stabs_asm_out_constructor (rtx, int);
+extern void default_named_section_asm_out_constructor (rtx, int);
+extern void default_ctor_section_asm_out_constructor (rtx, int);
+
+extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT);
+extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
+extern void default_unique_section (tree, int);
+extern section *default_function_rodata_section (tree);
+extern section *default_no_function_rodata_section (tree);
+extern section *default_select_rtx_section (enum machine_mode, rtx,
+ unsigned HOST_WIDE_INT);
+extern section *default_elf_select_rtx_section (enum machine_mode, rtx,
+ unsigned HOST_WIDE_INT);
+extern void default_encode_section_info (tree, rtx, int);
+extern const char *default_strip_name_encoding (const char *);
+extern void default_asm_output_anchor (rtx);
+extern bool default_use_anchors_for_symbol_p (const_rtx);
+extern bool default_binds_local_p (const_tree);
+extern bool default_binds_local_p_1 (const_tree, int);
+extern void default_globalize_label (FILE *, const char *);
+extern void default_globalize_decl_name (FILE *, tree);
+extern void default_emit_unwind_label (FILE *, tree, int, int);
+extern void default_emit_except_table_label (FILE *);
+extern void default_internal_label (FILE *, const char *, unsigned long);
+extern void default_file_start (void);
+extern void file_end_indicate_exec_stack (void);
+extern bool default_valid_pointer_mode (enum machine_mode);
+
+extern void default_elf_asm_output_external (FILE *file, tree,
+ const char *);
+extern int maybe_assemble_visibility (tree);
+
+extern int default_address_cost (rtx, bool);
+
+/* dbxout helper functions */
+#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
+
+extern void dbxout_int (int);
+extern void dbxout_stabd (int, int);
+extern void dbxout_begin_stabn (int);
+extern void dbxout_begin_stabn_sline (int);
+extern void dbxout_begin_empty_stabs (int);
+extern void dbxout_begin_simple_stabs (const char *, int);
+extern void dbxout_begin_simple_stabs_desc (const char *, int, int);
+
+extern void dbxout_stab_value_zero (void);
+extern void dbxout_stab_value_label (const char *);
+extern void dbxout_stab_value_label_diff (const char *, const char *);
+extern void dbxout_stab_value_internal_label (const char *, int *);
+extern void dbxout_stab_value_internal_label_diff (const char *, int *,
+ const char *);
+
+#endif
+
+#endif /* ! GCC_OUTPUT_H */
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