X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldlang.h;h=0cb147c56223f8ef3452fdc91a3d5f90a7dd274c;hb=0c66ea4c5e46372c7411f67b0ba21d7de5215958;hp=ab102a50df6d11bfcb3a1edae5fa06c788b2bcec;hpb=3a69b3aca678a3caf3ade7f9d42d18233b097ec6;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldlang.h b/ld/ldlang.h index ab102a50df..0cb147c562 100644 --- a/ld/ldlang.h +++ b/ld/ldlang.h @@ -1,264 +1,427 @@ -/* ldlang.h - +/* ldlang.h - linker command language support + Copyright (C) 1991-2016 Free Software Foundation, Inc. - Copyright (C) 1991 Free Software Foundation, Inc. + This file is part of the GNU Binutils. - This file is part of GLD, the Gnu Linker. - - GLD is free software; you can redistribute it and/or modify + 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. + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. - GLD is distributed in the hope that it will be useful, + 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, 675 Mass Ave, Cambridge, MA 02139, 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 { +typedef enum +{ lang_input_file_is_l_enum, lang_input_file_is_symbols_only_enum, lang_input_file_is_marker_enum, lang_input_file_is_fake_enum, -lang_input_file_is_search_file_enum, - lang_input_file_is_file_enum } lang_input_file_enum_type; + lang_input_file_is_search_file_enum, + lang_input_file_is_file_enum +} lang_input_file_enum_type; -typedef unsigned short fill_type; -typedef struct statement_list { - union lang_statement_union *head; - union lang_statement_union **tail; -} lang_statement_list_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; +} lang_statement_list_type; -typedef struct { - boolean flag_read; - boolean flag_write; - boolean flag_executable; - boolean flag_loadable; -} lang_section_flags_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; +typedef struct memory_region_struct +{ + lang_memory_region_name name_list; struct memory_region_struct *next; + union etree_union *origin_exp; bfd_vma origin; - bfd_offset length; + bfd_size_type length; + union etree_union *length_exp; bfd_vma current; - lang_section_flags_type flags; -} lang_memory_region_type ; - -typedef struct lang_statement_header_struct -{ -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_common_statement_enum, - lang_object_symbols_statement_enum, - lang_fill_statement_enum, - lang_data_statement_enum, - lang_target_statement_enum, - lang_output_statement_enum, - lang_padding_statement_enum, - - lang_afile_asection_pair_statement_enum - } type; + union lang_statement_union *last_os; + flagword flags; + flagword not_flags; + bfd_boolean had_full_message; +} lang_memory_region_type; +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_insert_statement_enum, + lang_constructors_statement_enum +}; + +typedef struct lang_statement_header_struct +{ + union lang_statement_union *next; + enum statement_enum type; } lang_statement_header_type; - -typedef struct +typedef struct { lang_statement_header_type header; union etree_union *exp; -} lang_assignment_statement_type; - +} lang_assignment_statement_type; -typedef struct lang_target_statement_struct { +typedef struct lang_target_statement_struct +{ lang_statement_header_type header; - char *target; + const char *target; } lang_target_statement_type; - -typedef struct lang_output_statement_struct { +typedef struct lang_output_statement_struct +{ lang_statement_header_type header; - char *name; + const char *name; } lang_output_statement_type; +/* Section types specified in a linker script. */ -typedef struct lang_output_section_statement_struct +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. */ + +typedef struct lang_output_section_phdr_list +{ + struct lang_output_section_phdr_list *next; + const char *name; + bfd_boolean used; +} lang_output_section_phdr_list; + +typedef struct lang_output_section_statement_struct { lang_statement_header_type header; - union etree_union *addr_tree; lang_statement_list_type children; - char *memspec; - union lang_statement_union *next; - char *name; - unsigned long subsection_alignment; - boolean processed; - + struct lang_output_section_statement_struct *next; + struct lang_output_section_statement_struct *prev; + const char *name; asection *bfd_section; - lang_section_flags_type flags; - struct memory_region_struct *region; - size_t block_value; - fill_type fill; + lang_memory_region_type *region; + lang_memory_region_type *lma_region; + fill_type *fill; + union etree_union *addr_tree; + union etree_union *load_base; + + /* 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 this section should update "dot". Prevents section being ignored. */ + unsigned int update_dot : 1; + /* If this section is after assignment to _end. */ + unsigned int after_end : 1; + /* If this section uses the alignment of its input sections. */ + unsigned int align_lma_with_input : 1; } lang_output_section_statement_type; - -typedef struct { +typedef struct +{ lang_statement_header_type header; } lang_common_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; } lang_object_symbols_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; -fill_type fill; + fill_type *fill; + int size; + asection *output_section; } lang_fill_statement_type; -typedef struct { +typedef struct +{ 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. */ +typedef struct +{ + lang_statement_header_type header; + /* Reloc to generate. */ + bfd_reloc_code_real_type reloc; -typedef struct lang_input_statement_struct - { - lang_statement_header_type header; - /* Name of this file. */ - 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. */ - char *local_sym_name; + /* Reloc howto structure. */ + reloc_howto_type *howto; - /* Describe the layout of the contents of the file */ + /* Section to generate reloc against. + Exactly one of section and name must be NULL. */ + asection *section; - /* The file's a.out header. */ - /* struct exec header;*/ - /* Offset in file of GDB symbol segment, or 0 if there is none. */ - int symseg_offset; + /* Name of symbol to generate reloc against. + Exactly one of section and name must be NULL. */ + const char *name; - /* Describe data from the file loaded into core */ + /* Expression for addend. */ + union etree_union *addend_exp; - bfd *the_bfd; + /* Resolved addend. */ + bfd_vma addend_value; - boolean closed; - file_ptr passive_position; + /* Output section where reloc should be performed. */ + asection *output_section; - /* Symbol table of the file. */ - asymbol **asymbols; - unsigned int symbol_count; + /* Offset within output section. */ + bfd_vma output_offset; +} lang_reloc_statement_type; - /* Next two used only if `relocatable_output' or if needed for */ - /* output of undefined reference line numbers. */ - /* Text reloc info saved by `write_text' for `coptxtrel'. */ +struct lang_input_statement_flags +{ + /* 1 means this file was specified in a -l option. */ + unsigned int maybe_archive : 1; + /* 1 means this file was specified in a -l:namespec option. */ + unsigned int full_name_provided : 1; - /* Offset in bytes in the output file symbol table - of the first local symbol for this file. Set by `write_file_symbols'. */ - int local_syms_offset; + /* 1 means search a set of directories for this file. */ + unsigned int search_dirs : 1; - /* For library members only */ + /* 1 means this was found when processing a script in the sysroot. */ + unsigned int sysrooted : 1; - /* For a library, points to chain of entries for the library members. */ - struct lang_input_statement_struct *subfiles; - /* For a library member, offset of the member within the archive. - Zero for files that are not library members. */ - /* int starting_offset;*/ - /* Size of contents of this file, if library member. */ - int total_size; - /* For library member, points to the library's own entry. */ - struct lang_input_statement_struct *superfile; - /* For library member, points to next entry for next member. */ - struct lang_input_statement_struct *chain; - /* 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; + /* 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. */ + unsigned int just_syms : 1; - boolean is_archive; + /* Whether to search for this entry as a dynamic archive. */ + unsigned int dynamic : 1; - /* 1 if file's header has been read into this structure. */ - boolean header_read_flag; + /* Set if a DT_NEEDED tag should be added not just for the dynamic library + explicitly given by this entry but also for any dynamic libraries in + this entry's needed list. */ + unsigned int add_DT_NEEDED_for_dynamic : 1; - /* 1 means search a set of directories for this file. */ - boolean search_dirs_flag; + /* Set if this entry should cause a DT_NEEDED tag only when some + regular file references its symbols (ie. --as-needed is in effect). */ + unsigned int add_DT_NEEDED_for_regular : 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; + /* Whether to include the entire contents of an archive. */ + unsigned int whole_archive : 1; - boolean loaded; + /* Set when bfd opening is successful. */ + unsigned int loaded : 1; + unsigned int real : 1; - /* unsigned int globals_in_this_file;*/ - char *target; - boolean real; + /* Set if the file does not exist. */ + unsigned int missing_file : 1; - asection *common_section; - asection *common_output_section; - } lang_input_statement_type; + /* Set if reloading an archive or --as-needed lib. */ + unsigned int reload : 1; -typedef struct { +#ifdef ENABLE_PLUGINS + /* Set if the file was claimed by a plugin. */ + unsigned int claimed : 1; + + /* Set if the file was claimed from an archive. */ + unsigned int claim_archive : 1; + + /* Set if added by the lto plugin add_input_file callback. */ + unsigned int lto_output : 1; +#endif /* ENABLE_PLUGINS */ + + /* Head of list of pushed flags. */ + struct lang_input_statement_flags *pushed; +}; + +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. */ + const char *local_sym_name; + + bfd *the_bfd; + + struct flag_info *section_flag_list; + + /* 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; + + const char *target; + + struct lang_input_statement_flags flags; +} lang_input_statement_type; + +typedef struct +{ lang_statement_header_type header; asection *section; - lang_input_statement_type *ifile; } lang_input_section_type; +struct map_symbol_def { + struct bfd_link_hash_entry *entry; + struct map_symbol_def *next; +}; -typedef struct { - lang_statement_header_type header; +/* For input sections, when writing a map file: head / tail of a linked + list of hash table entries for symbols defined in this section. */ +typedef struct input_section_userdata_struct +{ + struct map_symbol_def *map_symbol_def_head; + struct map_symbol_def **map_symbol_def_tail; + unsigned long map_symbol_def_count; +} input_section_userdata_type; + +#define get_userdata(x) ((x)->userdata) + + +typedef struct lang_wild_statement_struct lang_wild_statement_type; + +typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *, + asection *, struct flag_info *, + 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 +{ 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; - char *section_name; - char *filename; + 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; -typedef struct lang_address_statement_struct { + walk_wild_section_handler_t walk_wild_section_handler; + struct wildcard_list *handler_data[4]; + lang_section_bst_type *tree; + struct flag_info *section_flag_list; +}; + +typedef struct lang_address_statement_struct +{ lang_statement_header_type header; - 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 { +typedef struct +{ lang_statement_header_type header; bfd_vma output_offset; - size_t size; + bfd_size_type size; asection *output_section; - fill_type fill; + fill_type *fill; } lang_padding_statement_type; -typedef union lang_statement_union +/* A group statement collects a set of libraries together. The + libraries are searched multiple times, until no new undefined + symbols are found. The effect is to search a group of libraries as + though they were a single library. */ + +typedef struct +{ + lang_statement_header_type header; + lang_statement_list_type children; +} lang_group_statement_type; + +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; @@ -268,80 +431,272 @@ typedef union lang_statement_union lang_object_symbols_statement_type object_symbols_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 + PHDRS command in the linker script. */ +struct lang_phdr +{ + struct lang_phdr *next; + const char *name; + unsigned long type; + bfd_boolean filehdr; + bfd_boolean phdrs; + etree_type *at; + etree_type *flags; +}; + +/* 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; + bfd_boolean onlyfirst; +}; + +/* This structure is used to hold a list of input section names which + will not match an output section in the linker script. */ -PROTO(void,lang_init,(void)); -PROTO(struct memory_region_struct ,*lang_memory_region_lookup,(char *)); -PROTO(struct lang_output_section_statement_struct *,lang_output_section_find,(char *)); - -PROTO(void ,lang_map,(struct _iobuf *)); -PROTO(void,lang_set_flags,(lang_section_flags_type *, char *)); -PROTO(void,lang_add_output,(char *)); - -PROTO(void,lang_final,(void)); -PROTO(struct symbol_cache_entry *,create_symbol,(char *, unsigned int, struct sec_struct *)); -PROTO(void ,lang_process,(void)); -PROTO(void ,lang_section_start,(char *, union etree_union *)); -PROTO(void,lang_add_entry,(char *)); -PROTO(void,lang_add_target,(char *)); -PROTO(void,lang_add_wild,(char *, char *)); -PROTO(void,lang_add_map,(char *)); -PROTO(void,lang_add_fill,(int)); -PROTO(void,lang_add_assignment,(union etree_union *)); -PROTO(void,lang_add_attribute,(enum statement_enum)); -PROTO(void,lang_startup,(char *)); -PROTO(void,lang_float,(enum boolean)); -PROTO(void,lang_leave_output_section_statement,(bfd_vma, char *)); -PROTO(void,lang_abs_symbol_at_end_of,(char *, char *)); -PROTO(void,lang_statement_append,(struct statement_list *, union lang_statement_union *, union lang_statement_union **)); -PROTO(void, lang_for_each_file,(void (*dothis)(lang_input_statement_type *))); - -#define LANG_FOR_EACH_ASYMBOL(asymbol) \ - -#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)\ - -#define LANG_FOR_EACH_INPUT_SECTION(statement, abfd, section, x) \ -{ 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)\ - { \ - asection *section; \ - bfd *abfd = statement->the_bfd; \ - for (section = abfd->sections; \ - section != (asection *)NULL; \ - section = section->next) { \ - x; \ - } \ - } \ - } - -#define LANG_FOR_EACH_OUTPUT_SECTION(section, x) \ - { extern bfd *output_bfd; \ - asection *section; \ - for (section = output_bfd->sections; \ - section != (asection *)NULL; \ - section = section->next) \ - { x; } \ - } - - -PROTO(void, lang_process,(void)); -PROTO(void, ldlang_add_file,(lang_input_statement_type *)); - -PROTO(lang_output_section_statement_type *,lang_output_section_find,()); - -PROTO(lang_input_statement_type *, - lang_add_input_file,(char *name, - lang_input_file_enum_type file_type, - char *target)); -PROTO(lang_output_section_statement_type *, -lang_output_section_statement_lookup,(char *name)); +struct unique_sections +{ + struct unique_sections *next; + const char *name; +}; + +/* 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; +}; + +struct asneeded_minfo +{ + struct asneeded_minfo *next; + const char *soname; + bfd *ref; + const char *name; +}; + +extern struct lang_phdr *lang_phdr_list; +extern struct lang_nocrossrefs *nocrossref_list; +extern const char *output_target; +extern lang_output_section_statement_type *abs_output_section; +extern lang_statement_list_type lang_output_section_statement; +extern struct lang_input_statement_flags input_flags; +extern bfd_boolean lang_has_input_file; +extern lang_statement_list_type *stat_ptr; +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 struct asneeded_minfo **asneeded_list_tail; + +extern void (*output_bfd_hash_table_free_fn) (struct bfd_link_hash_table *); + +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 *, etree_type *, enum section_type, etree_type *, etree_type *, + etree_type *, int, int); +extern void lang_final + (void); +extern void lang_relax_sections + (bfd_boolean); +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_statement_append + (lang_statement_list_type *, lang_statement_union_type *, + lang_statement_union_type **); +extern void lang_for_each_input_file + (void (*dothis) (lang_input_statement_type *)); +extern void lang_for_each_file + (void (*dothis) (lang_input_statement_type *)); +extern void lang_reset_memory_regions + (void); +extern void lang_do_assignments + (lang_phase_type); +extern asection *section_for_dot + (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 *, flagword, 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 + (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_get + (const asection *); +extern lang_output_section_statement_type *lang_output_section_statement_lookup + (const char *, int, bfd_boolean); +extern lang_output_section_statement_type *next_matching_output_section_statement + (lang_output_section_statement_type *, int); +extern void ldlang_add_undef + (const char *const, bfd_boolean); +extern void ldlang_add_require_defined + (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 + (bfd_reloc_code_real_type, reloc_howto_type *, asection *, const char *, + union etree_union *); +extern void lang_for_each_statement + (void (*) (lang_statement_union_type *)); +extern void lang_for_each_statement_worker + (void (*) (lang_statement_union_type *), lang_statement_union_type *); +extern void *stat_alloc + (size_t); +extern void strip_excluded_output_sections + (void); +extern void lang_clear_os_map + (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 *, + struct flag_info *, lang_output_section_statement_type *); +extern void lang_new_phdr + (const char *, etree_type *, bfd_boolean, bfd_boolean, etree_type *, + etree_type *); +extern void lang_add_nocrossref + (lang_nocrossref_type *); +extern void lang_add_nocrossref_to + (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_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 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); + +extern void +lang_ld_feature (char *); + +extern void +lang_print_memory_usage (void); + +extern void +lang_add_gc_name (const char *); + +#endif