/* Symbol size. */
bfd_size_type size;
- /* Symbol alignment (common symbols only). */
- bfd_size_type align;
-
/* Symbol index as a dynamic symbol. Initialized to -1, and remains
-1 if this is not a dynamic symbol. */
long dynindx;
one. Otherwise it is NULL. */
struct elf_link_hash_entry *weakdef;
+ /* If this symbol requires an entry in the global offset table, the
+ processor specific backend uses this field to hold the offset
+ into the .got section. If this field is -1, then the symbol does
+ not require a global offset table entry. */
+ bfd_vma got_offset;
+
+ /* If this symbol requires an entry in the procedure linkage table,
+ the processor specific backend uses these two fields to hold the
+ offset into the procedure linkage section and the offset into the
+ .got section. If plt_offset is -1, then the symbol does not
+ require an entry in the procedure linkage table. */
+ bfd_vma plt_offset;
+
/* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
char type;
#define ELF_LINK_HASH_REF_DYNAMIC 04
/* Symbol is defined by a shared object. */
#define ELF_LINK_HASH_DEF_DYNAMIC 010
- /* Symbol is referenced by two or more shared objects. */
-#define ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE 020
- /* Symbol is defined by two or more shared objects. */
-#define ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE 040
/* Dynamic symbol has been adjustd. */
-#define ELF_LINK_HASH_DYNAMIC_ADJUSTED 0100
- /* Symbol is defined as weak. */
-#define ELF_LINK_HASH_DEFINED_WEAK 0200
+#define ELF_LINK_HASH_DYNAMIC_ADJUSTED 020
+ /* Symbol needs a copy reloc. */
+#define ELF_LINK_HASH_NEEDS_COPY 040
+ /* Symbol needs a procedure linkage table entry. */
+#define ELF_LINK_HASH_NEEDS_PLT 0100
};
/* ELF linker hash table. */
struct elf_link_hash_table
{
struct bfd_link_hash_table root;
- /* The first dynamic object found during a link. We create several
- special input sections when linking against dynamic objects, and
- we simply attach them to the first one found. */
+ /* Whether we have created the special dynamic sections required
+ when linking against or generating a shared object. */
+ boolean dynamic_sections_created;
+ /* The BFD used to hold special sections created by the linker.
+ This will be the first BFD found which requires these sections to
+ be created. */
bfd *dynobj;
/* The number of symbols found in the link which must be put into
the .dynsym section. */
size_t dynsymcount;
/* The string table of dynamic symbols, which becomes the .dynstr
section. */
- struct strtab *dynstr;
+ struct bfd_strtab_hash *dynstr;
/* The number of buckets in the hash table in the .hash section.
This is based on the number of dynamic symbols. */
size_t bucketcount;
+ /* Whether we are linking against a dynamic object which has a
+ DT_NEEDED entry in the .dynamic section. This may need to become
+ a list of DT_NEEDED entries. */
+ boolean saw_needed;
};
/* Look up an entry in an ELF linker hash table. */
boolean (*elf_backend_create_dynamic_sections)
PARAMS ((bfd *abfd, struct bfd_link_info *info));
+ /* The CHECK_RELOCS function is called by the add_symbols phase of
+ the ELF backend linker. It is called once for each section with
+ relocs of an object file, just after the symbols for the object
+ file have been added to the global linker hash table. The
+ function must look through the relocs and do any special handling
+ required. This generally means allocating space in the global
+ offset table, and perhaps allocating space for a reloc. The
+ relocs are always passed as Rela structures; if the section
+ actually uses Rel structures, the r_addend field will always be
+ zero. */
+ boolean (*check_relocs)
+ PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
+ const Elf_Internal_Rela *relocs));
+
/* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
linker for every symbol which is defined by a dynamic object and
referenced by a regular object. This is called after all the
input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
function has been called. The hash table entry should be
- bfd_link_hash_defined, and it should be defined in a section from
- a dynamic object. Dynamic object sections are not included in
- the final link, and this function is responsible for changing the
- value to something which the rest of the link can deal with.
- This will normally involve adding an entry to the .plt or .got or
- some such section, and setting the symbol to point to that. */
+ bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
+ defined in a section from a dynamic object. Dynamic object
+ sections are not included in the final link, and this function is
+ responsible for changing the value to something which the rest of
+ the link can deal with. This will normally involve adding an
+ entry to the .plt or .got or some such section, and setting the
+ symbol to point to that. */
boolean (*elf_backend_adjust_dynamic_symbol)
PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
bfd *input_bfd, asection *input_section, bfd_byte *contents,
Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
- asection **local_sections, char *output_names));
+ asection **local_sections));
/* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
linker just before it writes a symbol out to the .dynsym section.
PARAMS ((bfd *, struct bfd_link_info *));
/* A function to do any final processing needed for the ELF file
- before writing it out. */
+ before writing it out. The LINKER argument is true if this BFD
+ was created by the ELF backend linker. */
void (*elf_backend_final_write_processing)
- PARAMS ((bfd *, struct bfd_link_info *));
+ PARAMS ((bfd *, boolean linker));
/* The swapping table to use when dealing with ECOFF information.
Used for the MIPS ELF .mdebug section. */
const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
-};
-struct elf_sym_extra
-{
- int elf_sym_num; /* sym# after locals/globals are reordered */
+ /* Alternate EM_xxxx machine codes for this backend. */
+ int elf_machine_alt1;
+ int elf_machine_alt2;
};
-typedef struct elf_sym_extra Elf_Sym_Extra;
-
/* Information stored for each BFD section in an ELF file. This
structure is allocated by elf_new_section_hook. */
/* Used by the backend linker to store the symbol hash table entries
associated with relocs against global symbols. */
struct elf_link_hash_entry **rel_hashes;
- /* A pointer to the unswapped external relocs; this may be NULL. */
- PTR relocs;
+ /* A pointer to the swapped relocs. If the section uses REL relocs,
+ rather than RELA, all the r_addend fields will be zero. This
+ pointer may be NULL. It is used by the backend linker. */
+ Elf_Internal_Rela *relocs;
+ /* Used by the backend linker when generating a shared library to
+ record the dynamic symbol index for a section symbol
+ corresponding to this section. */
+ long dynindx;
};
#define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
#define get_elf_backend_data(abfd) \
((struct elf_backend_data *) (abfd)->xvec->backend_data)
-struct strtab
-{
- char *tab;
- int nentries;
- int length;
-};
-
/* Some private data is stashed away for future use using the tdata pointer
in the bfd structure. */
Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
Elf_Internal_Shdr **elf_sect_ptr;
Elf_Internal_Phdr *phdr;
- struct strtab *strtab_ptr;
+ struct bfd_strtab_hash *strtab_ptr;
int num_locals;
int num_globals;
- Elf_Sym_Extra *sym_extra;
asymbol **section_syms; /* STT_SECTION symbols for each section */
- int num_section_syms; /* number of section_syms allocated */
Elf_Internal_Shdr symtab_hdr;
Elf_Internal_Shdr shstrtab_hdr;
Elf_Internal_Shdr strtab_hdr;
bfd_vma gp; /* The gp value (MIPS only, for now) */
int gp_size; /* The gp size (MIPS only, for now) */
+ /* This is set to true if the object was created by the backend
+ linker. */
+ boolean linker;
+
/* A mapping from external symbols to entries in the linker hash
table, used when linking. This is indexed by the symbol index
minus the sh_info field of the symbol table header. */
struct elf_link_hash_entry **sym_hashes;
+ /* A mapping from local symbols to offsets into the global offset
+ table, used when linking. This is indexed by the symbol index. */
+ bfd_vma *local_got_offsets;
+
/* The linker ELF emulation code needs to let the backend ELF linker
know what filename should be used for a dynamic object if the
dynamic object is found using a search. This field is used to
sh_info field in the symbol table header, and always read all the
symbols. */
boolean bad_symtab;
+
+ /* Records the result of `get_program_header_size'. */
+ bfd_size_type program_header_size;
+
+ /* Used by MIPS ELF find_nearest_line entry point. The structure
+ could be included directly in this one, but there's no point to
+ wasting the memory just for the infrequently called
+ find_nearest_line. */
+ struct mips_elf_find_line *find_line_info;
+
+ /* Used by PowerPC to determine if the e_flags field has been intiialized */
+ boolean ppc_flags_init;
};
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
#define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
#define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
#define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
-#define elf_sym_extra(bfd) (elf_tdata(bfd) -> sym_extra)
#define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
-#define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
#define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
#define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
#define elf_gp(bfd) (elf_tdata(bfd) -> gp)
#define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
#define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
+#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got_offsets)
#define elf_dt_needed_name(bfd) (elf_tdata(bfd) -> dt_needed_name)
#define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
+#define elf_ppc_flags_init(bfd) (elf_tdata(bfd) -> ppc_flags_init)
\f
extern char * elf_string_from_elf_section PARAMS ((bfd *, unsigned, unsigned));
extern char * elf_get_str_section PARAMS ((bfd *, unsigned));
+extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *,
+ bfd_print_symbol_type));
+
+#define bfd_elf32_print_symbol bfd_elf_print_symbol
+#define bfd_elf64_print_symbol bfd_elf_print_symbol
#define bfd_elf32_mkobject bfd_elf_mkobject
#define bfd_elf64_mkobject bfd_elf_mkobject
#define elf_mkobject bfd_elf_mkobject
extern long bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
arelent **, asymbol **));
extern asymbol *bfd_elf32_make_empty_symbol PARAMS ((bfd *));
-extern void bfd_elf32_print_symbol PARAMS ((bfd *, PTR, asymbol *,
- bfd_print_symbol_type));
extern void bfd_elf32_get_symbol_info PARAMS ((bfd *, asymbol *,
symbol_info *));
extern alent *bfd_elf32_get_lineno PARAMS ((bfd *, asymbol *));
CONST char **,
unsigned int *));
extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
-extern void bfd_elf32__write_relocs PARAMS ((bfd *, asection *, PTR));
extern boolean bfd_elf32_new_section_hook PARAMS ((bfd *, asection *));
extern boolean bfd_elf32_bfd_link_add_symbols
PARAMS ((bfd *, struct bfd_link_info *));
PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *));
extern boolean bfd_elf32_add_dynamic_entry
PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
+extern boolean bfd_elf32_link_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+extern boolean bfd_elf32_link_record_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
/* If the target doesn't have reloc handling written yet: */
extern void bfd_elf32_no_info_to_howto PARAMS ((bfd *, arelent *,
extern long bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
arelent **, asymbol **));
extern asymbol *bfd_elf64_make_empty_symbol PARAMS ((bfd *));
-extern void bfd_elf64_print_symbol PARAMS ((bfd *, PTR, asymbol *,
- bfd_print_symbol_type));
extern void bfd_elf64_get_symbol_info PARAMS ((bfd *, asymbol *,
symbol_info *));
extern alent *bfd_elf64_get_lineno PARAMS ((bfd *, asymbol *));
CONST char **,
unsigned int *));
extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
-extern void bfd_elf64__write_relocs PARAMS ((bfd *, asection *, PTR));
extern boolean bfd_elf64_new_section_hook PARAMS ((bfd *, asection *));
extern boolean bfd_elf64_bfd_link_add_symbols
PARAMS ((bfd *, struct bfd_link_info *));
PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *));
extern boolean bfd_elf64_add_dynamic_entry
PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
+extern boolean bfd_elf64_link_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+extern boolean bfd_elf64_link_record_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
/* If the target doesn't have reloc handling written yet: */
extern void bfd_elf64_no_info_to_howto PARAMS ((bfd *, arelent *,
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