diff gcc/output.h @ 0:a06113de4d67

first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children 77e2b8dfacca
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/output.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,649 @@
+/* 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 */