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Diffstat (limited to 'include/bfdlink.h')
| -rw-r--r-- | include/bfdlink.h | 786 |
1 files changed, 0 insertions, 786 deletions
diff --git a/include/bfdlink.h b/include/bfdlink.h deleted file mode 100644 index 0d6e9f8..0000000 --- a/include/bfdlink.h +++ /dev/null @@ -1,786 +0,0 @@ -/* bfdlink.h -- header file for BFD link routines - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, - 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. - Written by Steve Chamberlain and Ian Lance Taylor, Cygnus Support. - - This file is part of BFD, the Binary File Descriptor library. - - 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 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 this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -#ifndef BFDLINK_H -#define BFDLINK_H - -/* Which symbols to strip during a link. */ -enum bfd_link_strip -{ - strip_none, /* Don't strip any symbols. */ - strip_debugger, /* Strip debugging symbols. */ - strip_some, /* keep_hash is the list of symbols to keep. */ - strip_all /* Strip all symbols. */ -}; - -/* Which local symbols to discard during a link. This is irrelevant - if strip_all is used. */ -enum bfd_link_discard -{ - discard_sec_merge, /* Discard local temporary symbols in SEC_MERGE - sections. */ - discard_none, /* Don't discard any locals. */ - discard_l, /* Discard local temporary symbols. */ - discard_all /* Discard all locals. */ -}; - -/* Describes the type of hash table entry structure being used. - Different hash table structure have different fields and so - support different linking features. */ -enum bfd_link_hash_table_type - { - bfd_link_generic_hash_table, - bfd_link_elf_hash_table - }; - -/* These are the possible types of an entry in the BFD link hash - table. */ - -enum bfd_link_hash_type -{ - bfd_link_hash_new, /* Symbol is new. */ - bfd_link_hash_undefined, /* Symbol seen before, but undefined. */ - bfd_link_hash_undefweak, /* Symbol is weak and undefined. */ - bfd_link_hash_defined, /* Symbol is defined. */ - bfd_link_hash_defweak, /* Symbol is weak and defined. */ - bfd_link_hash_common, /* Symbol is common. */ - bfd_link_hash_indirect, /* Symbol is an indirect link. */ - bfd_link_hash_warning /* Like indirect, but warn if referenced. */ -}; - -enum bfd_link_common_skip_ar_symbols -{ - bfd_link_common_skip_none, - bfd_link_common_skip_text, - bfd_link_common_skip_data, - bfd_link_common_skip_all -}; - -struct bfd_link_hash_common_entry - { - unsigned int alignment_power; /* Alignment. */ - asection *section; /* Symbol section. */ - }; - -/* The linking routines use a hash table which uses this structure for - its elements. */ - -struct bfd_link_hash_entry -{ - /* Base hash table entry structure. */ - struct bfd_hash_entry root; - - /* Type of this entry. */ - enum bfd_link_hash_type type; - - /* A union of information depending upon the type. */ - union - { - /* Nothing is kept for bfd_hash_new. */ - /* bfd_link_hash_undefined, bfd_link_hash_undefweak. */ - struct - { - /* Undefined and common symbols are kept in a linked list through - this field. This field is present in all of the union element - so that we don't need to remove entries from the list when we - change their type. Removing entries would either require the - list to be doubly linked, which would waste more memory, or - require a traversal. When an undefined or common symbol is - created, it should be added to this list, the head of which is in - the link hash table itself. As symbols are defined, they need - not be removed from the list; anything which reads the list must - doublecheck the symbol type. - - Weak symbols are not kept on this list. - - Defined and defweak symbols use this field as a reference marker. - If the field is not NULL, or this structure is the tail of the - undefined symbol list, the symbol has been referenced. If the - symbol is undefined and becomes defined, this field will - automatically be non-NULL since the symbol will have been on the - undefined symbol list. */ - struct bfd_link_hash_entry *next; - bfd *abfd; /* BFD symbol was found in. */ - bfd *weak; /* BFD weak symbol was found in. */ - } undef; - /* bfd_link_hash_defined, bfd_link_hash_defweak. */ - struct - { - struct bfd_link_hash_entry *next; - asection *section; /* Symbol section. */ - bfd_vma value; /* Symbol value. */ - } def; - /* bfd_link_hash_indirect, bfd_link_hash_warning. */ - struct - { - struct bfd_link_hash_entry *next; - struct bfd_link_hash_entry *link; /* Real symbol. */ - const char *warning; /* Warning (bfd_link_hash_warning only). */ - } i; - /* bfd_link_hash_common. */ - struct - { - struct bfd_link_hash_entry *next; - /* The linker needs to know three things about common - symbols: the size, the alignment, and the section in - which the symbol should be placed. We store the size - here, and we allocate a small structure to hold the - section and the alignment. The alignment is stored as a - power of two. We don't store all the information - directly because we don't want to increase the size of - the union; this structure is a major space user in the - linker. */ - struct bfd_link_hash_common_entry *p; - bfd_size_type size; /* Common symbol size. */ - } c; - } u; -}; - -/* This is the link hash table. It is a derived class of - bfd_hash_table. */ - -struct bfd_link_hash_table -{ - /* The hash table itself. */ - struct bfd_hash_table table; - /* A linked list of undefined and common symbols, linked through the - next field in the bfd_link_hash_entry structure. */ - struct bfd_link_hash_entry *undefs; - /* Entries are added to the tail of the undefs list. */ - struct bfd_link_hash_entry *undefs_tail; - /* The type of the link hash table. */ - enum bfd_link_hash_table_type type; -}; - -/* Look up an entry in a link hash table. If FOLLOW is TRUE, this - follows bfd_link_hash_indirect and bfd_link_hash_warning links to - the real symbol. */ -extern struct bfd_link_hash_entry *bfd_link_hash_lookup - (struct bfd_link_hash_table *, const char *, bfd_boolean create, - bfd_boolean copy, bfd_boolean follow); - -/* Look up an entry in the main linker hash table if the symbol might - be wrapped. This should only be used for references to an - undefined symbol, not for definitions of a symbol. */ - -extern struct bfd_link_hash_entry *bfd_wrapped_link_hash_lookup - (bfd *, struct bfd_link_info *, const char *, bfd_boolean, - bfd_boolean, bfd_boolean); - -/* Traverse a link hash table. */ -extern void bfd_link_hash_traverse - (struct bfd_link_hash_table *, - bfd_boolean (*) (struct bfd_link_hash_entry *, void *), - void *); - -/* Add an entry to the undefs list. */ -extern void bfd_link_add_undef - (struct bfd_link_hash_table *, struct bfd_link_hash_entry *); - -/* Remove symbols from the undefs list that don't belong there. */ -extern void bfd_link_repair_undef_list - (struct bfd_link_hash_table *table); - -/* Read symbols and cache symbol pointer array in outsymbols. */ -extern bfd_boolean bfd_generic_link_read_symbols (bfd *); - -struct bfd_sym_chain -{ - struct bfd_sym_chain *next; - const char *name; -}; - -/* How to handle unresolved symbols. - There are four possibilities which are enumerated below: */ -enum report_method -{ - /* This is the initial value when then link_info structure is created. - It allows the various stages of the linker to determine whether they - allowed to set the value. */ - RM_NOT_YET_SET = 0, - RM_IGNORE, - RM_GENERATE_WARNING, - RM_GENERATE_ERROR -}; - -struct bfd_elf_dynamic_list; - -/* This structure holds all the information needed to communicate - between BFD and the linker when doing a link. */ - -struct bfd_link_info -{ - /* TRUE if BFD should generate a relocatable object file. */ - unsigned int relocatable: 1; - - /* TRUE if BFD should generate relocation information in the final - executable. */ - unsigned int emitrelocations: 1; - - /* TRUE if BFD should generate a "task linked" object file, - similar to relocatable but also with globals converted to - statics. */ - unsigned int task_link: 1; - - /* TRUE if BFD should generate a shared object. */ - unsigned int shared: 1; - - /* TRUE if BFD should pre-bind symbols in a shared object. */ - unsigned int symbolic: 1; - - /* TRUE if BFD should export all symbols in the dynamic symbol table - of an executable, rather than only those used. */ - unsigned int export_dynamic: 1; - - /* TRUE if shared objects should be linked directly, not shared. */ - unsigned int static_link: 1; - - /* TRUE if the output file should be in a traditional format. This - is equivalent to the setting of the BFD_TRADITIONAL_FORMAT flag - on the output file, but may be checked when reading the input - files. */ - unsigned int traditional_format: 1; - - /* TRUE if we want to produced optimized output files. This might - need much more time and therefore must be explicitly selected. */ - unsigned int optimize: 1; - - /* TRUE if ok to have multiple definition. */ - unsigned int allow_multiple_definition: 1; - - /* TRUE if ok to have version with no definition. */ - unsigned int allow_undefined_version: 1; - - /* TRUE if a default symbol version should be created and used for - exported symbols. */ - unsigned int create_default_symver: 1; - - /* TRUE if a default symbol version should be created and used for - imported symbols. */ - unsigned int default_imported_symver: 1; - - /* TRUE if symbols should be retained in memory, FALSE if they - should be freed and reread. */ - unsigned int keep_memory: 1; - - /* TRUE if every symbol should be reported back via the notice - callback. */ - unsigned int notice_all: 1; - - /* TRUE if executable should not contain copy relocs. - Setting this true may result in a non-sharable text segment. */ - unsigned int nocopyreloc: 1; - - /* TRUE if the new ELF dynamic tags are enabled. */ - unsigned int new_dtags: 1; - - /* TRUE if non-PLT relocs should be merged into one reloc section - and sorted so that relocs against the same symbol come together. */ - unsigned int combreloc: 1; - - /* TRUE if .eh_frame_hdr section and PT_GNU_EH_FRAME ELF segment - should be created. */ - unsigned int eh_frame_hdr: 1; - - /* TRUE if global symbols in discarded sections should be stripped. */ - unsigned int strip_discarded: 1; - - /* TRUE if generating a position independent executable. */ - unsigned int pie: 1; - - /* TRUE if generating an executable, position independent or not. */ - unsigned int executable : 1; - - /* TRUE if PT_GNU_STACK segment should be created with PF_R|PF_W|PF_X - flags. */ - unsigned int execstack: 1; - - /* TRUE if PT_GNU_STACK segment should be created with PF_R|PF_W - flags. */ - unsigned int noexecstack: 1; - - /* TRUE if PT_GNU_RELRO segment should be created. */ - unsigned int relro: 1; - - /* TRUE if we should warn when adding a DT_TEXTREL to a shared object. */ - unsigned int warn_shared_textrel: 1; - - /* TRUE if we should warn alternate ELF machine code. */ - unsigned int warn_alternate_em: 1; - - /* TRUE if unreferenced sections should be removed. */ - unsigned int gc_sections: 1; - - /* TRUE if user shoudl be informed of removed unreferenced sections. */ - unsigned int print_gc_sections: 1; - - /* TRUE if .hash section should be created. */ - unsigned int emit_hash: 1; - - /* TRUE if .gnu.hash section should be created. */ - unsigned int emit_gnu_hash: 1; - - /* If TRUE reduce memory overheads, at the expense of speed. This will - cause map file generation to use an O(N^2) algorithm and disable - caching ELF symbol buffer. */ - unsigned int reduce_memory_overheads: 1; - - /* TRUE if all data symbols should be dynamic. */ - unsigned int dynamic_data: 1; - - /* TRUE if some symbols have to be dynamic, controlled by - --dynamic-list command line options. */ - unsigned int dynamic: 1; - - /* Non-NULL if .note.gnu.build-id section should be created. */ - char *emit_note_gnu_build_id; - - /* What to do with unresolved symbols in an object file. - When producing executables the default is GENERATE_ERROR. - When producing shared libraries the default is IGNORE. The - assumption with shared libraries is that the reference will be - resolved at load/execution time. */ - enum report_method unresolved_syms_in_objects; - - /* What to do with unresolved symbols in a shared library. - The same defaults apply. */ - enum report_method unresolved_syms_in_shared_libs; - - /* Which symbols to strip. */ - enum bfd_link_strip strip; - - /* Which local symbols to discard. */ - enum bfd_link_discard discard; - - /* Criteria for skipping symbols when determining - whether to include an object from an archive. */ - enum bfd_link_common_skip_ar_symbols common_skip_ar_symbols; - - /* Char that may appear as the first char of a symbol, but should be - skipped (like symbol_leading_char) when looking up symbols in - wrap_hash. Used by PowerPC Linux for 'dot' symbols. */ - char wrap_char; - - /* Separator between archive and filename in linker script filespecs. */ - char path_separator; - - /* Function callbacks. */ - const struct bfd_link_callbacks *callbacks; - - /* Hash table handled by BFD. */ - struct bfd_link_hash_table *hash; - - /* Hash table of symbols to keep. This is NULL unless strip is - strip_some. */ - struct bfd_hash_table *keep_hash; - - /* Hash table of symbols to report back via the notice callback. If - this is NULL, and notice_all is FALSE, then no symbols are - reported back. */ - struct bfd_hash_table *notice_hash; - - /* Hash table of symbols which are being wrapped (the --wrap linker - option). If this is NULL, no symbols are being wrapped. */ - struct bfd_hash_table *wrap_hash; - - /* The output BFD. */ - bfd *output_bfd; - - /* The list of input BFD's involved in the link. These are chained - together via the link_next field. */ - bfd *input_bfds; - bfd **input_bfds_tail; - - /* If a symbol should be created for each input BFD, this is section - where those symbols should be placed. It must be a section in - the output BFD. It may be NULL, in which case no such symbols - will be created. This is to support CREATE_OBJECT_SYMBOLS in the - linker command language. */ - asection *create_object_symbols_section; - - /* List of global symbol names that are starting points for marking - sections against garbage collection. */ - struct bfd_sym_chain *gc_sym_list; - - /* If a base output file is wanted, then this points to it */ - void *base_file; - - /* The function to call when the executable or shared object is - loaded. */ - const char *init_function; - - /* The function to call when the executable or shared object is - unloaded. */ - const char *fini_function; - - /* Number of relaxation passes. Usually only one relaxation pass - is needed. But a backend can have as many relaxation passes as - necessary. During bfd_relax_section call, it is set to the - current pass, starting from 0. */ - int relax_pass; - - /* Number of relaxation trips. This number is incremented every - time the relaxation pass is restarted due to a previous - relaxation returning true in *AGAIN. */ - int relax_trip; - - /* Non-zero if auto-import thunks for DATA items in pei386 DLLs - should be generated/linked against. Set to 1 if this feature - is explicitly requested by the user, -1 if enabled by default. */ - int pei386_auto_import; - - /* Non-zero if runtime relocs for DATA items with non-zero addends - in pei386 DLLs should be generated. Set to 1 if this feature - is explicitly requested by the user, -1 if enabled by default. */ - int pei386_runtime_pseudo_reloc; - - /* How many spare .dynamic DT_NULL entries should be added? */ - unsigned int spare_dynamic_tags; - - /* May be used to set DT_FLAGS for ELF. */ - bfd_vma flags; - - /* May be used to set DT_FLAGS_1 for ELF. */ - bfd_vma flags_1; - - /* Start and end of RELRO region. */ - bfd_vma relro_start, relro_end; - - /* List of symbols should be dynamic. */ - struct bfd_elf_dynamic_list *dynamic_list; -}; - -/* This structures holds a set of callback functions. These are called - by the BFD linker routines. Except for the info functions, the first - argument to each callback function is the bfd_link_info structure - being used and each function returns a boolean value. If the - function returns FALSE, then the BFD function which called it should - return with a failure indication. */ - -struct bfd_link_callbacks -{ - /* A function which is called when an object is added from an - archive. ABFD is the archive element being added. NAME is the - name of the symbol which caused the archive element to be pulled - in. This function may set *SUBSBFD to point to an alternative - BFD from which symbols should in fact be added in place of the - original BFD's symbols. */ - bfd_boolean (*add_archive_element) - (struct bfd_link_info *, bfd *abfd, const char *name, bfd **subsbfd); - /* A function which is called when a symbol is found with multiple - definitions. NAME is the symbol which is defined multiple times. - OBFD is the old BFD, OSEC is the old section, OVAL is the old - value, NBFD is the new BFD, NSEC is the new section, and NVAL is - the new value. OBFD may be NULL. OSEC and NSEC may be - bfd_com_section or bfd_ind_section. */ - bfd_boolean (*multiple_definition) - (struct bfd_link_info *, const char *name, - bfd *obfd, asection *osec, bfd_vma oval, - bfd *nbfd, asection *nsec, bfd_vma nval); - /* A function which is called when a common symbol is defined - multiple times. NAME is the symbol appearing multiple times. - OBFD is the BFD of the existing symbol; it may be NULL if this is - not known. OTYPE is the type of the existing symbol, which may - be bfd_link_hash_defined, bfd_link_hash_defweak, - bfd_link_hash_common, or bfd_link_hash_indirect. If OTYPE is - bfd_link_hash_common, OSIZE is the size of the existing symbol. - NBFD is the BFD of the new symbol. NTYPE is the type of the new - symbol, one of bfd_link_hash_defined, bfd_link_hash_common, or - bfd_link_hash_indirect. If NTYPE is bfd_link_hash_common, NSIZE - is the size of the new symbol. */ - bfd_boolean (*multiple_common) - (struct bfd_link_info *, const char *name, - bfd *obfd, enum bfd_link_hash_type otype, bfd_vma osize, - bfd *nbfd, enum bfd_link_hash_type ntype, bfd_vma nsize); - /* A function which is called to add a symbol to a set. ENTRY is - the link hash table entry for the set itself (e.g., - __CTOR_LIST__). RELOC is the relocation to use for an entry in - the set when generating a relocatable file, and is also used to - get the size of the entry when generating an executable file. - ABFD, SEC and VALUE identify the value to add to the set. */ - bfd_boolean (*add_to_set) - (struct bfd_link_info *, struct bfd_link_hash_entry *entry, - bfd_reloc_code_real_type reloc, bfd *abfd, asection *sec, bfd_vma value); - /* A function which is called when the name of a g++ constructor or - destructor is found. This is only called by some object file - formats. CONSTRUCTOR is TRUE for a constructor, FALSE for a - destructor. This will use BFD_RELOC_CTOR when generating a - relocatable file. NAME is the name of the symbol found. ABFD, - SECTION and VALUE are the value of the symbol. */ - bfd_boolean (*constructor) - (struct bfd_link_info *, bfd_boolean constructor, const char *name, - bfd *abfd, asection *sec, bfd_vma value); - /* A function which is called to issue a linker warning. For - example, this is called when there is a reference to a warning - symbol. WARNING is the warning to be issued. SYMBOL is the name - of the symbol which triggered the warning; it may be NULL if - there is none. ABFD, SECTION and ADDRESS identify the location - which trigerred the warning; either ABFD or SECTION or both may - be NULL if the location is not known. */ - bfd_boolean (*warning) - (struct bfd_link_info *, const char *warning, const char *symbol, - bfd *abfd, asection *section, bfd_vma address); - /* A function which is called when a relocation is attempted against - an undefined symbol. NAME is the symbol which is undefined. - ABFD, SECTION and ADDRESS identify the location from which the - reference is made. IS_FATAL indicates whether an undefined symbol is - a fatal error or not. In some cases SECTION may be NULL. */ - bfd_boolean (*undefined_symbol) - (struct bfd_link_info *, const char *name, bfd *abfd, - asection *section, bfd_vma address, bfd_boolean is_fatal); - /* A function which is called when a reloc overflow occurs. ENTRY is - the link hash table entry for the symbol the reloc is against. - NAME is the name of the local symbol or section the reloc is - against, RELOC_NAME is the name of the relocation, and ADDEND is - any addend that is used. ABFD, SECTION and ADDRESS identify the - location at which the overflow occurs; if this is the result of a - bfd_section_reloc_link_order or bfd_symbol_reloc_link_order, then - ABFD will be NULL. */ - bfd_boolean (*reloc_overflow) - (struct bfd_link_info *, struct bfd_link_hash_entry *entry, - const char *name, const char *reloc_name, bfd_vma addend, - bfd *abfd, asection *section, bfd_vma address); - /* A function which is called when a dangerous reloc is performed. - MESSAGE is an appropriate message. - ABFD, SECTION and ADDRESS identify the location at which the - problem occurred; if this is the result of a - bfd_section_reloc_link_order or bfd_symbol_reloc_link_order, then - ABFD will be NULL. */ - bfd_boolean (*reloc_dangerous) - (struct bfd_link_info *, const char *message, - bfd *abfd, asection *section, bfd_vma address); - /* A function which is called when a reloc is found to be attached - to a symbol which is not being written out. NAME is the name of - the symbol. ABFD, SECTION and ADDRESS identify the location of - the reloc; if this is the result of a - bfd_section_reloc_link_order or bfd_symbol_reloc_link_order, then - ABFD will be NULL. */ - bfd_boolean (*unattached_reloc) - (struct bfd_link_info *, const char *name, - bfd *abfd, asection *section, bfd_vma address); - /* A function which is called when a symbol in notice_hash is - defined or referenced. NAME is the symbol. ABFD, SECTION and - ADDRESS are the value of the symbol. If SECTION is - bfd_und_section, this is a reference. */ - bfd_boolean (*notice) - (struct bfd_link_info *, const char *name, - bfd *abfd, asection *section, bfd_vma address); - /* Error or warning link info message. */ - void (*einfo) - (const char *fmt, ...); - /* General link info message. */ - void (*info) - (const char *fmt, ...); - /* Message to be printed in linker map file. */ - void (*minfo) - (const char *fmt, ...); - /* This callback provides a chance for users of the BFD library to - override its decision about whether to place two adjacent sections - into the same segment. */ - bfd_boolean (*override_segment_assignment) - (struct bfd_link_info *, bfd * abfd, - asection * current_section, asection * previous_section, - bfd_boolean new_segment); -}; - -/* The linker builds link_order structures which tell the code how to - include input data in the output file. */ - -/* These are the types of link_order structures. */ - -enum bfd_link_order_type -{ - bfd_undefined_link_order, /* Undefined. */ - bfd_indirect_link_order, /* Built from a section. */ - bfd_data_link_order, /* Set to explicit data. */ - bfd_section_reloc_link_order, /* Relocate against a section. */ - bfd_symbol_reloc_link_order /* Relocate against a symbol. */ -}; - -/* This is the link_order structure itself. These form a chain - attached to the output section whose contents they are describing. */ - -struct bfd_link_order -{ - /* Next link_order in chain. */ - struct bfd_link_order *next; - /* Type of link_order. */ - enum bfd_link_order_type type; - /* Offset within output section. */ - bfd_vma offset; - /* Size within output section. */ - bfd_size_type size; - /* Type specific information. */ - union - { - struct - { - /* Section to include. If this is used, then - section->output_section must be the section the - link_order is attached to, section->output_offset must - equal the link_order offset field, and section->size - must equal the link_order size field. Maybe these - restrictions should be relaxed someday. */ - asection *section; - } indirect; - struct - { - /* Size of contents, or zero when contents size == size - within output section. - A non-zero value allows filling of the output section - with an arbitrary repeated pattern. */ - unsigned int size; - /* Data to put into file. */ - bfd_byte *contents; - } data; - struct - { - /* Description of reloc to generate. Used for - bfd_section_reloc_link_order and - bfd_symbol_reloc_link_order. */ - struct bfd_link_order_reloc *p; - } reloc; - } u; -}; - -/* A linker order of type bfd_section_reloc_link_order or - bfd_symbol_reloc_link_order means to create a reloc against a - section or symbol, respectively. This is used to implement -Ur to - generate relocs for the constructor tables. The - bfd_link_order_reloc structure describes the reloc that BFD should - create. It is similar to a arelent, but I didn't use arelent - because the linker does not know anything about most symbols, and - any asymbol structure it creates will be partially meaningless. - This information could logically be in the bfd_link_order struct, - but I didn't want to waste the space since these types of relocs - are relatively rare. */ - -struct bfd_link_order_reloc -{ - /* Reloc type. */ - bfd_reloc_code_real_type reloc; - - union - { - /* For type bfd_section_reloc_link_order, this is the section - the reloc should be against. This must be a section in the - output BFD, not any of the input BFDs. */ - asection *section; - /* For type bfd_symbol_reloc_link_order, this is the name of the - symbol the reloc should be against. */ - const char *name; - } u; - - /* Addend to use. The object file should contain zero. The BFD - backend is responsible for filling in the contents of the object - file correctly. For some object file formats (e.g., COFF) the - addend must be stored into in the object file, and for some - (e.g., SPARC a.out) it is kept in the reloc. */ - bfd_vma addend; -}; - -/* Allocate a new link_order for a section. */ -extern struct bfd_link_order *bfd_new_link_order (bfd *, asection *); - -/* These structures are used to describe version information for the - ELF linker. These structures could be manipulated entirely inside - BFD, but it would be a pain. Instead, the regular linker sets up - these structures, and then passes them into BFD. */ - -/* Glob pattern for a version. */ - -struct bfd_elf_version_expr -{ - /* Next glob pattern for this version. */ - struct bfd_elf_version_expr *next; - /* Glob pattern. */ - const char *pattern; - /* Set if pattern is not a glob. */ - unsigned int literal : 1; - /* Defined by ".symver". */ - unsigned int symver : 1; - /* Defined by version script. */ - unsigned int script : 1; - /* Pattern type. */ -#define BFD_ELF_VERSION_C_TYPE 1 -#define BFD_ELF_VERSION_CXX_TYPE 2 -#define BFD_ELF_VERSION_JAVA_TYPE 4 - unsigned int mask : 3; -}; - -struct bfd_elf_version_expr_head -{ - /* List of all patterns, both wildcards and non-wildcards. */ - struct bfd_elf_version_expr *list; - /* Hash table for non-wildcards. */ - void *htab; - /* Remaining patterns. */ - struct bfd_elf_version_expr *remaining; - /* What kind of pattern types are present in list (bitmask). */ - unsigned int mask; -}; - -/* Version dependencies. */ - -struct bfd_elf_version_deps -{ - /* Next dependency for this version. */ - struct bfd_elf_version_deps *next; - /* The version which this version depends upon. */ - struct bfd_elf_version_tree *version_needed; -}; - -/* A node in the version tree. */ - -struct bfd_elf_version_tree -{ - /* Next version. */ - struct bfd_elf_version_tree *next; - /* Name of this version. */ - const char *name; - /* Version number. */ - unsigned int vernum; - /* Regular expressions for global symbols in this version. */ - struct bfd_elf_version_expr_head globals; - /* Regular expressions for local symbols in this version. */ - struct bfd_elf_version_expr_head locals; - /* List of versions which this version depends upon. */ - struct bfd_elf_version_deps *deps; - /* Index of the version name. This is used within BFD. */ - unsigned int name_indx; - /* Whether this version tree was used. This is used within BFD. */ - int used; - /* Matching hook. */ - struct bfd_elf_version_expr *(*match) - (struct bfd_elf_version_expr_head *head, - struct bfd_elf_version_expr *prev, const char *sym); -}; - -struct bfd_elf_dynamic_list -{ - struct bfd_elf_version_expr_head head; - struct bfd_elf_version_expr *(*match) - (struct bfd_elf_version_expr_head *head, - struct bfd_elf_version_expr *prev, const char *sym); -}; - -#endif |