/* ldlang.h - linker command language support
- Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
-
- This file is part of GLD, the Gnu Linker.
-
- GLD is free software; you can redistribute it and/or modify
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
+
+ This file is part of the GNU Binutils.
+
+ This program 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 1, or (at your option)
- any later version.
-
- GLD is distributed in the hope that it will be useful,
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 GLD; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef LDLANG_H
#define LDLANG_H
+#define DEFAULT_MEMORY_REGION "*default*"
+
typedef enum
{
lang_input_file_is_l_enum,
lang_input_file_is_file_enum
} lang_input_file_enum_type;
-typedef unsigned int fill_type;
+struct _fill_type
+{
+ size_t size;
+ unsigned char data[1];
+};
+
typedef struct statement_list
{
- union lang_statement_union *head;
- union lang_statement_union **tail;
+ union lang_statement_union * head;
+ union lang_statement_union ** tail;
} lang_statement_list_type;
+typedef struct memory_region_name_struct
+{
+ const char * name;
+ struct memory_region_name_struct * next;
+} lang_memory_region_name;
typedef struct memory_region_struct
{
- char *name;
+ lang_memory_region_name name_list;
struct memory_region_struct *next;
bfd_vma origin;
bfd_size_type length;
bfd_vma current;
- bfd_size_type old_length;
- int flags;
- boolean had_full_message;
-} lang_memory_region_type ;
+ union lang_statement_union *last_os;
+ flagword flags;
+ flagword not_flags;
+ bfd_boolean had_full_message;
+} lang_memory_region_type;
-typedef struct lang_statement_header_struct
+typedef struct lang_statement_header_struct
{
- union lang_statement_union *next;
+ union lang_statement_union *next;
enum statement_enum
- {
- lang_output_section_statement_enum,
- lang_assignment_statement_enum,
- lang_input_statement_enum,
- lang_address_statement_enum,
- lang_wild_statement_enum,
- lang_input_section_enum,
- lang_object_symbols_statement_enum,
- lang_fill_statement_enum,
- lang_data_statement_enum,
- lang_reloc_statement_enum,
- lang_target_statement_enum,
- lang_output_statement_enum,
- lang_padding_statement_enum,
- lang_group_statement_enum,
-
- lang_afile_asection_pair_statement_enum,
- lang_constructors_statement_enum
- } type;
+ {
+ lang_output_section_statement_enum,
+ lang_assignment_statement_enum,
+ lang_input_statement_enum,
+ lang_address_statement_enum,
+ lang_wild_statement_enum,
+ lang_input_section_enum,
+ lang_object_symbols_statement_enum,
+ lang_fill_statement_enum,
+ lang_data_statement_enum,
+ lang_reloc_statement_enum,
+ lang_target_statement_enum,
+ lang_output_statement_enum,
+ lang_padding_statement_enum,
+ lang_group_statement_enum,
+ lang_insert_statement_enum,
+ lang_constructors_statement_enum
+ } type;
} lang_statement_header_type;
-
-typedef struct
+typedef struct
{
lang_statement_header_type header;
union etree_union *exp;
} lang_assignment_statement_type;
-
typedef struct lang_target_statement_struct
{
lang_statement_header_type header;
const char *target;
} lang_target_statement_type;
-
typedef struct lang_output_statement_struct
{
lang_statement_header_type header;
const char *name;
} lang_output_statement_type;
+/* Section types specified in a linker script. */
+
+enum section_type
+{
+ normal_section,
+ overlay_section,
+ noload_section,
+ noalloc_section
+};
-/* This structure holds a list of program headers describing segments
- in which this section should be placed. */
+/* This structure holds a list of program headers describing
+ segments in which this section should be placed. */
-struct lang_output_section_phdr_list
+typedef struct lang_output_section_phdr_list
{
struct lang_output_section_phdr_list *next;
const char *name;
- boolean used;
-};
+ bfd_boolean used;
+} lang_output_section_phdr_list;
-typedef struct lang_output_section_statement_struct
+typedef struct lang_output_section_statement_struct
{
lang_statement_header_type header;
- union etree_union *addr_tree;
lang_statement_list_type children;
- const char *memspec;
- union lang_statement_union *next;
+ struct lang_output_section_statement_struct *next;
+ struct lang_output_section_statement_struct *prev;
const char *name;
-
- boolean processed;
-
asection *bfd_section;
- int flags; /* Or together of all input sections */
- int loadable; /* set from NOLOAD flag in script */
- struct memory_region_struct *region;
- size_t block_value;
- fill_type fill;
-
- int subsection_alignment; /* alignment of components */
- int section_alignment; /* alignment of start of section */
-
+ lang_memory_region_type *region;
+ lang_memory_region_type *lma_region;
+ fill_type *fill;
+ union etree_union *addr_tree;
union etree_union *load_base;
- struct lang_output_section_phdr_list *phdrs;
+ /* If non-null, an expression to evaluate after setting the section's
+ size. The expression is evaluated inside REGION (above) with '.'
+ set to the end of the section. Used in the last overlay section
+ to move '.' past all the overlaid sections. */
+ union etree_union *update_dot_tree;
+
+ lang_output_section_phdr_list *phdrs;
+
+ unsigned int block_value;
+ int subsection_alignment; /* Alignment of components. */
+ int section_alignment; /* Alignment of start of section. */
+ int constraint;
+ flagword flags;
+ enum section_type sectype;
+ unsigned int processed_vma : 1;
+ unsigned int processed_lma : 1;
+ unsigned int all_input_readonly : 1;
+ /* If this section should be ignored. */
+ unsigned int ignored : 1;
+ /* If there is a symbol relative to this section. */
+ unsigned int section_relative_symbol : 1;
} lang_output_section_statement_type;
-
typedef struct
{
lang_statement_header_type header;
typedef struct
{
lang_statement_header_type header;
- fill_type fill;
+ fill_type *fill;
int size;
asection *output_section;
} lang_fill_statement_type;
{
lang_statement_header_type header;
unsigned int type;
- union etree_union *exp;
+ union etree_union *exp;
bfd_vma value;
asection *output_section;
- bfd_vma output_vma;
+ bfd_vma output_offset;
} lang_data_statement_type;
/* Generate a reloc in the output file. */
/* Reloc howto structure. */
reloc_howto_type *howto;
- /* Section to generate reloc against. Exactly one of section and
- name must be NULL. */
+ /* Section to generate reloc against.
+ Exactly one of section and name must be NULL. */
asection *section;
- /* Name of symbol to generate reloc against. Exactly one of section
- and name must be NULL. */
+ /* Name of symbol to generate reloc against.
+ Exactly one of section and name must be NULL. */
const char *name;
/* Expression for addend. */
/* Output section where reloc should be performed. */
asection *output_section;
- /* VMA within output section. */
- bfd_vma output_vma;
+ /* Offset within output section. */
+ bfd_vma output_offset;
} lang_reloc_statement_type;
typedef struct lang_input_statement_struct
lang_statement_header_type header;
/* Name of this file. */
const char *filename;
- /* Name to use for the symbol giving address of text start */
- /* Usually the same as filename, but for a file spec'd with -l
- this is the -l switch itself rather than the filename. */
+ /* Name to use for the symbol giving address of text start.
+ Usually the same as filename, but for a file spec'd with
+ -l this is the -l switch itself rather than the filename. */
const char *local_sym_name;
-
+
bfd *the_bfd;
-
- boolean closed;
- file_ptr passive_position;
-
- /* Symbol table of the file. */
- asymbol **asymbols;
- unsigned int symbol_count;
-
+
/* Point to the next file - whatever it is, wanders up and down
archives */
-
- union lang_statement_union *next;
- /* Point to the next file, but skips archive contents */
- union lang_statement_union *next_real_file;
-
- boolean is_archive;
-
+ union lang_statement_union *next;
+
+ /* Point to the next file, but skips archive contents. */
+ union lang_statement_union *next_real_file;
+
+ const char *target;
+
+ unsigned int is_archive : 1;
+
/* 1 means search a set of directories for this file. */
- boolean search_dirs_flag;
-
+ unsigned int search_dirs_flag : 1;
+
+ /* 1 means this was found in a search directory marked as sysrooted,
+ if search_dirs_flag is false, otherwise, that it should be
+ searched in ld_sysroot before any other location, as long as it
+ starts with a slash. */
+ unsigned int sysrooted : 1;
+
/* 1 means this is base file of incremental load.
Do not load this file's text or data.
- Also default text_start to after this file's bss. */
-
- boolean just_syms_flag;
+ Also default text_start to after this file's bss. */
+ unsigned int just_syms_flag : 1;
/* Whether to search for this entry as a dynamic archive. */
- boolean dynamic;
+ unsigned int dynamic : 1;
+
+ /* Whether DT_NEEDED tags should be added for dynamic libraries in
+ DT_NEEDED tags from this entry. */
+ unsigned int add_needed : 1;
+
+ /* Whether this entry should cause a DT_NEEDED tag only when
+ satisfying references from regular files, or always. */
+ unsigned int as_needed : 1;
/* Whether to include the entire contents of an archive. */
- boolean whole_archive;
+ unsigned int whole_archive : 1;
- boolean loaded;
-
- /* unsigned int globals_in_this_file;*/
- const char *target;
- boolean real;
- asection *common_section;
- asection *common_output_section;
- boolean complained;
+ unsigned int loaded : 1;
+
+ unsigned int real : 1;
} lang_input_statement_type;
typedef struct
{
lang_statement_header_type header;
asection *section;
- lang_input_statement_type *ifile;
-
} lang_input_section_type;
+typedef struct lang_wild_statement_struct lang_wild_statement_type;
-typedef struct
+typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *,
+ asection *, lang_input_statement_type *, void *);
+
+typedef void (*walk_wild_section_handler_t) (lang_wild_statement_type *,
+ lang_input_statement_type *,
+ callback_t callback,
+ void *data);
+
+typedef bfd_boolean (*lang_match_sec_type_func) (bfd *, const asection *,
+ bfd *, const asection *);
+
+/* Binary search tree structure to efficiently sort sections by
+ name. */
+typedef struct lang_section_bst
{
- lang_statement_header_type header;
asection *section;
- union lang_statement_union *file;
-} lang_afile_asection_pair_statement_type;
+ struct lang_section_bst *left;
+ struct lang_section_bst *right;
+} lang_section_bst_type;
-typedef struct lang_wild_statement_struct
+struct lang_wild_statement_struct
{
lang_statement_header_type header;
- const char *section_name;
const char *filename;
+ bfd_boolean filenames_sorted;
+ struct wildcard_list *section_list;
+ bfd_boolean keep_sections;
lang_statement_list_type children;
-} lang_wild_statement_type;
+
+ walk_wild_section_handler_t walk_wild_section_handler;
+ struct wildcard_list *handler_data[4];
+ lang_section_bst_type *tree;
+};
typedef struct lang_address_statement_struct
{
lang_statement_header_type header;
- const char *section_name;
- union etree_union *address;
+ const char *section_name;
+ union etree_union *address;
+ const segment_type *segment;
} lang_address_statement_type;
typedef struct
bfd_vma output_offset;
size_t size;
asection *output_section;
- fill_type fill;
+ fill_type *fill;
} lang_padding_statement_type;
/* A group statement collects a set of libraries together. The
lang_statement_list_type children;
} lang_group_statement_type;
-typedef union lang_statement_union
+typedef struct
+{
+ lang_statement_header_type header;
+ const char *where;
+ bfd_boolean is_before;
+} lang_insert_statement_type;
+
+typedef union lang_statement_union
{
lang_statement_header_type header;
- union lang_statement_union *next;
lang_wild_statement_type wild_statement;
lang_data_statement_type data_statement;
lang_reloc_statement_type reloc_statement;
lang_address_statement_type address_statement;
lang_output_section_statement_type output_section_statement;
- lang_afile_asection_pair_statement_type afile_asection_pair_statement;
lang_assignment_statement_type assignment_statement;
lang_input_statement_type input_statement;
lang_target_statement_type target_statement;
lang_fill_statement_type fill_statement;
lang_padding_statement_type padding_statement;
lang_group_statement_type group_statement;
+ lang_insert_statement_type insert_statement;
} lang_statement_union_type;
/* This structure holds information about a program header, from the
struct lang_phdr *next;
const char *name;
unsigned long type;
- boolean filehdr;
- boolean phdrs;
+ bfd_boolean filehdr;
+ bfd_boolean phdrs;
etree_type *at;
etree_type *flags;
};
+extern struct lang_phdr *lang_phdr_list;
+
+/* This structure is used to hold a list of sections which may not
+ cross reference each other. */
+
+typedef struct lang_nocrossref
+{
+ struct lang_nocrossref *next;
+ const char *name;
+} lang_nocrossref_type;
+
+/* The list of nocrossref lists. */
+
+struct lang_nocrossrefs
+{
+ struct lang_nocrossrefs *next;
+ lang_nocrossref_type *list;
+};
+
+extern struct lang_nocrossrefs *nocrossref_list;
+
+/* This structure is used to hold a list of input section names which
+ will not match an output section in the linker script. */
+
+struct unique_sections
+{
+ struct unique_sections *next;
+ const char *name;
+};
+
+/* This structure records symbols for which we need to keep track of
+ definedness for use in the DEFINED () test. */
+
+struct lang_definedness_hash_entry
+{
+ struct bfd_hash_entry root;
+ int iteration;
+};
+
+/* Used by place_orphan to keep track of orphan sections and statements. */
+
+struct orphan_save
+{
+ const char *name;
+ flagword flags;
+ lang_output_section_statement_type *os;
+ asection **section;
+ lang_statement_union_type **stmt;
+ lang_output_section_statement_type **os_tail;
+};
+
extern lang_output_section_statement_type *abs_output_section;
-extern boolean lang_has_input_file;
+extern lang_statement_list_type lang_output_section_statement;
+extern bfd_boolean lang_has_input_file;
extern etree_type *base;
extern lang_statement_list_type *stat_ptr;
-extern boolean delete_output_file_on_failure;
-
-extern const char *entry_symbol;
-extern boolean entry_from_cmdline;
-
-extern void lang_init PARAMS ((void));
-extern struct memory_region_struct *lang_memory_region_lookup
- PARAMS ((const char *const));
-extern void lang_map PARAMS ((void));
-extern void lang_set_flags PARAMS ((int *, const char *));
-extern void lang_add_output PARAMS ((const char *, int from_script));
-extern void lang_enter_output_section_statement
- PARAMS ((const char *output_section_statement_name,
- etree_type * address_exp,
- int flags,
- bfd_vma block_value,
- etree_type *align,
- etree_type *subalign,
- etree_type *));
-extern void lang_final PARAMS ((void));
-extern void lang_process PARAMS ((void));
-extern void lang_section_start PARAMS ((const char *, union etree_union *));
-extern void lang_add_entry PARAMS ((const char *, boolean));
-extern void lang_add_target PARAMS ((const char *));
-extern void lang_add_wild PARAMS ((const char *const , const char *const));
-extern void lang_add_map PARAMS ((const char *));
-extern void lang_add_fill PARAMS ((int));
-extern void lang_add_assignment PARAMS ((union etree_union *));
-extern void lang_add_attribute PARAMS ((enum statement_enum));
-extern void lang_startup PARAMS ((const char *));
-extern void lang_float PARAMS ((enum bfd_boolean));
-extern void lang_leave_output_section_statement PARAMS ((bfd_vma,
- const char *));
-extern void lang_abs_symbol_at_end_of PARAMS ((const char *, const char *));
-extern void lang_abs_symbol_at_beginning_of PARAMS ((const char *,
- const char *));
-extern void lang_statement_append PARAMS ((struct statement_list *,
- union lang_statement_union *,
- union lang_statement_union **));
+extern bfd_boolean delete_output_file_on_failure;
+
+extern struct bfd_sym_chain entry_symbol;
+extern const char *entry_section;
+extern bfd_boolean entry_from_cmdline;
+extern lang_statement_list_type file_chain;
+extern lang_statement_list_type input_file_chain;
+
+extern int lang_statement_iteration;
+
+extern void lang_init
+ (void);
+extern void lang_finish
+ (void);
+extern lang_memory_region_type * lang_memory_region_lookup
+ (const char * const, bfd_boolean);
+extern void lang_memory_region_alias
+ (const char *, const char *);
+extern void lang_map
+ (void);
+extern void lang_set_flags
+ (lang_memory_region_type *, const char *, int);
+extern void lang_add_output
+ (const char *, int from_script);
+extern lang_output_section_statement_type *lang_enter_output_section_statement
+ (const char *output_section_statement_name,
+ etree_type *address_exp,
+ enum section_type sectype,
+ etree_type *align,
+ etree_type *subalign,
+ etree_type *, int);
+extern void lang_final
+ (void);
+extern void lang_process
+ (void);
+extern void lang_section_start
+ (const char *, union etree_union *, const segment_type *);
+extern void lang_add_entry
+ (const char *, bfd_boolean);
+extern void lang_default_entry
+ (const char *);
+extern void lang_add_target
+ (const char *);
+extern void lang_add_wild
+ (struct wildcard_spec *, struct wildcard_list *, bfd_boolean);
+extern void lang_add_map
+ (const char *);
+extern void lang_add_fill
+ (fill_type *);
+extern lang_assignment_statement_type *lang_add_assignment
+ (union etree_union *);
+extern void lang_add_attribute
+ (enum statement_enum);
+extern void lang_startup
+ (const char *);
+extern void lang_float
+ (bfd_boolean);
+extern void lang_leave_output_section_statement
+ (fill_type *, const char *, lang_output_section_phdr_list *,
+ const char *);
+extern void lang_abs_symbol_at_end_of
+ (const char *, const char *);
+extern void lang_abs_symbol_at_beginning_of
+ (const char *, const char *);
+extern void lang_statement_append
+ (lang_statement_list_type *, lang_statement_union_type *,
+ lang_statement_union_type **);
extern void lang_for_each_input_file
- PARAMS ((void (*dothis) (lang_input_statement_type *)));
+ (void (*dothis) (lang_input_statement_type *));
extern void lang_for_each_file
- PARAMS ((void (*dothis) (lang_input_statement_type *)));
-extern bfd_vma lang_do_assignments
- PARAMS ((lang_statement_union_type * s,
- lang_output_section_statement_type *output_section_statement,
- fill_type fill,
- bfd_vma dot));
-
-#define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
- extern lang_statement_list_type file_chain; \
- lang_input_statement_type *statement; \
- for (statement = (lang_input_statement_type *)file_chain.head;\
- statement != (lang_input_statement_type *)NULL; \
- statement = (lang_input_statement_type *)statement->next)\
-
-extern void lang_process PARAMS ((void));
-extern void ldlang_add_file PARAMS ((lang_input_statement_type *));
-extern lang_output_section_statement_type *lang_output_section_find
- PARAMS ((const char * const));
+ (void (*dothis) (lang_input_statement_type *));
+extern void lang_reset_memory_regions
+ (void);
+extern void lang_do_assignments
+ (void);
+
+#define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
+ lang_input_statement_type *statement; \
+ for (statement = (lang_input_statement_type *) file_chain.head; \
+ statement != (lang_input_statement_type *) NULL; \
+ statement = (lang_input_statement_type *) statement->next) \
+
+#define lang_output_section_find(NAME) \
+ lang_output_section_statement_lookup (NAME, 0, FALSE)
+
+extern void lang_process
+ (void);
+extern void ldlang_add_file
+ (lang_input_statement_type *);
+extern lang_output_section_statement_type *lang_output_section_find_by_flags
+ (const asection *, lang_output_section_statement_type **,
+ lang_match_sec_type_func);
+extern lang_output_section_statement_type *lang_insert_orphan
+ (asection *, const char *, int, lang_output_section_statement_type *,
+ struct orphan_save *, etree_type *, lang_statement_list_type *);
extern lang_input_statement_type *lang_add_input_file
- PARAMS ((const char *name, lang_input_file_enum_type file_type,
- const char *target));
-extern void lang_add_keepsyms_file PARAMS ((const char *filename));
-extern lang_output_section_statement_type *
- lang_output_section_statement_lookup PARAMS ((const char * const name));
-extern void ldlang_add_undef PARAMS ((const char *const name));
-extern void lang_add_output_format PARAMS ((const char *, const char *,
- const char *, int from_script));
-extern void lang_list_init PARAMS ((lang_statement_list_type*));
-extern void lang_add_data PARAMS ((int type, union etree_union *));
+ (const char *, lang_input_file_enum_type, const char *);
+extern void lang_add_keepsyms_file
+ (const char *);
+extern lang_output_section_statement_type *lang_output_section_statement_lookup
+ (const char *const, int, bfd_boolean);
+extern void ldlang_add_undef
+ (const char *const);
+extern void lang_add_output_format
+ (const char *, const char *, const char *, int);
+extern void lang_list_init
+ (lang_statement_list_type *);
+extern void push_stat_ptr
+ (lang_statement_list_type *);
+extern void pop_stat_ptr
+ (void);
+extern void lang_add_data
+ (int type, union etree_union *);
extern void lang_add_reloc
- PARAMS ((bfd_reloc_code_real_type reloc, reloc_howto_type *howto,
- asection *section, const char *name, union etree_union *addend));
+ (bfd_reloc_code_real_type, reloc_howto_type *, asection *, const char *,
+ union etree_union *);
extern void lang_for_each_statement
- PARAMS ((void (*func) (lang_statement_union_type *)));
-extern PTR stat_alloc PARAMS ((size_t size));
-extern bfd_vma lang_size_sections
- PARAMS ((lang_statement_union_type *s,
- lang_output_section_statement_type *output_section_statement,
- lang_statement_union_type **prev, fill_type fill,
- bfd_vma dot, boolean relax));
-extern void lang_enter_group PARAMS ((void));
-extern void lang_leave_group PARAMS ((void));
-extern void wild_doit
- PARAMS ((lang_statement_list_type *ptr, asection *section,
- lang_output_section_statement_type *output,
- lang_input_statement_type *file));
+ (void (*) (lang_statement_union_type *));
+extern void *stat_alloc
+ (size_t);
+extern void strip_excluded_output_sections
+ (void);
+extern void dprint_statement
+ (lang_statement_union_type *, int);
+extern void lang_size_sections
+ (bfd_boolean *, bfd_boolean);
+extern void one_lang_size_sections_pass
+ (bfd_boolean *, bfd_boolean);
+extern void lang_add_insert
+ (const char *, int);
+extern void lang_enter_group
+ (void);
+extern void lang_leave_group
+ (void);
+extern void lang_add_section
+ (lang_statement_list_type *, asection *,
+ lang_output_section_statement_type *);
extern void lang_new_phdr
- PARAMS ((const char *, etree_type *, boolean, boolean, etree_type *,
- etree_type *));
-extern void lang_section_in_phdr PARAMS ((const char *));
+ (const char *, etree_type *, bfd_boolean, bfd_boolean, etree_type *,
+ etree_type *);
+extern void lang_add_nocrossref
+ (lang_nocrossref_type *);
+extern void lang_enter_overlay
+ (etree_type *, etree_type *);
+extern void lang_enter_overlay_section
+ (const char *);
+extern void lang_leave_overlay_section
+ (fill_type *, lang_output_section_phdr_list *);
+extern void lang_leave_overlay
+ (etree_type *, int, fill_type *, const char *,
+ lang_output_section_phdr_list *, const char *);
+
+extern struct bfd_elf_version_tree *lang_elf_version_info;
+
+extern struct bfd_elf_version_expr *lang_new_vers_pattern
+ (struct bfd_elf_version_expr *, const char *, const char *, bfd_boolean);
+extern struct bfd_elf_version_tree *lang_new_vers_node
+ (struct bfd_elf_version_expr *, struct bfd_elf_version_expr *);
+extern struct bfd_elf_version_deps *lang_add_vers_depend
+ (struct bfd_elf_version_deps *, const char *);
+extern void lang_register_vers_node
+ (const char *, struct bfd_elf_version_tree *, struct bfd_elf_version_deps *);
+extern void lang_append_dynamic_list (struct bfd_elf_version_expr *);
+extern void lang_append_dynamic_list_cpp_typeinfo (void);
+extern void lang_append_dynamic_list_cpp_new (void);
+extern void lang_add_unique
+ (const char *);
+extern const char *lang_get_output_target
+ (void);
+extern void lang_track_definedness (const char *);
+extern int lang_symbol_definition_iteration (const char *);
+extern void lang_update_definedness
+ (const char *, struct bfd_link_hash_entry *);
+
+extern void add_excluded_libs (const char *);
+extern bfd_boolean load_symbols
+ (lang_input_statement_type *, lang_statement_list_type *);
+
+extern bfd_boolean
+ldlang_override_segment_assignment
+ (struct bfd_link_info *, bfd *, asection *, asection *, bfd_boolean);
#endif