/* BFD back-end data structures for ELF files.
Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _LIBELF_H_
#define _LIBELF_H_ 1
{
struct cie_header hdr;
unsigned char version;
- unsigned char augmentation[20];
- unsigned int code_align;
- int data_align;
- unsigned int ra_column;
- unsigned int augmentation_size;
+ char augmentation[20];
+ bfd_vma code_align;
+ bfd_signed_vma data_align;
+ bfd_vma ra_column;
+ bfd_vma augmentation_size;
struct elf_link_hash_entry *personality;
unsigned char per_encoding;
unsigned char lsda_encoding;
struct eh_cie_fde
{
- unsigned int offset;
+ /* For FDEs, this points to the CIE used. */
+ struct eh_cie_fde *cie_inf;
unsigned int size;
- asection *sec;
+ unsigned int offset;
unsigned int new_offset;
unsigned char fde_encoding;
unsigned char lsda_encoding;
unsigned char lsda_offset;
unsigned int cie : 1;
unsigned int removed : 1;
+ unsigned int add_augmentation_size : 1;
+ unsigned int add_fde_encoding : 1;
unsigned int make_relative : 1;
unsigned int make_lsda_relative : 1;
+ unsigned int need_lsda_relative : 1;
unsigned int per_encoding_relative : 1;
};
{
struct cie last_cie;
asection *last_cie_sec;
+ struct eh_cie_fde *last_cie_inf;
asection *hdr_sec;
- unsigned int last_cie_offset;
unsigned int fde_count, array_count;
struct eh_frame_array_ent *array;
/* TRUE if .eh_frame_hdr should contain the sorted search table.
We build it if we successfully read all .eh_frame input sections
and recognize them. */
bfd_boolean table;
+ bfd_boolean offsets_adjusted;
};
/* ELF linker hash table. */
/* The value to use when initialising got.refcount/offset and
plt.refcount/offset in an elf_link_hash_entry. Set to zero when
- the values are refcounts. Set to init_offset in
- size_dynamic_sections when the values may be offsets. */
- union gotplt_union init_refcount;
+ the values are refcounts. Set to init_got_offset/init_plt_offset
+ in size_dynamic_sections when the values may be offsets. */
+ union gotplt_union init_got_refcount;
+ union gotplt_union init_plt_refcount;
/* The value to use for got.refcount/offset and plt.refcount/offset
when the values may be offsets. Normally (bfd_vma) -1. */
- union gotplt_union init_offset;
+ union gotplt_union init_got_offset;
+ union gotplt_union init_plt_offset;
/* The number of symbols found in the link which must be put into
the .dynsym section. */
/* The _GLOBAL_OFFSET_TABLE_ symbol. */
struct elf_link_hash_entry *hgot;
+ /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
+ struct elf_link_hash_entry *hplt;
+
/* A pointer to information used to merge SEC_MERGE sections. */
void *merge_info;
/* A linked list of BFD's loaded in the link. */
struct elf_link_loaded_list *loaded;
+
+ /* True if this target has relocatable executables, so needs dynamic
+ section symbols. */
+ bfd_boolean is_relocatable_executable;
};
/* Look up an entry in an ELF linker hash table. */
int attr;
};
+enum action_discarded
+ {
+ COMPLAIN = 1,
+ PRETEND = 2
+ };
+
struct elf_backend_data
{
/* The architecture for this backend. */
/* The maximum page size for this backend. */
bfd_vma maxpagesize;
+ /* The minimum page size for this backend. An input object will not be
+ considered page aligned unless its sections are correctly aligned for
+ pages at least this large. May be smaller than maxpagesize. */
+ bfd_vma minpagesize;
+
+ /* The common page size for this backend. */
+ bfd_vma commonpagesize;
+
/* The BFD flags applied to sections created for dynamic linking. */
flagword dynamic_sec_flags;
/* A function to handle unusual section types when creating BFD
sections from ELF sections. */
bfd_boolean (*elf_backend_section_from_shdr)
- (bfd *, Elf_Internal_Shdr *, const char *);
+ (bfd *, Elf_Internal_Shdr *, const char *, int);
- /* A function to convert machine dependent section header flags to
+ /* A function to convert machine dependent ELF section header flags to
BFD internal section header flags. */
bfd_boolean (*elf_backend_section_flags)
(flagword *, const Elf_Internal_Shdr *);
+ /* A function that returns a struct containing ELF section flags and
+ type for the given BFD section. */
+ const struct bfd_elf_special_section * (*get_sec_type_attr)
+ (bfd *, asection *);
+
/* A function to handle unusual program segment types when creating BFD
sections from ELF program segments. */
bfd_boolean (*elf_backend_section_from_phdr)
- (bfd *, Elf_Internal_Phdr *, int);
+ (bfd *, Elf_Internal_Phdr *, int, const char *);
/* A function to set up the ELF section header for a BFD section in
preparation for writing it out. This is where the flags and type
bfd_boolean (*elf_backend_modify_segment_map)
(bfd *, struct bfd_link_info *);
+ /* This function is called during section garbage collection to
+ mark sections that define global symbols. */
+ bfd_boolean (*gc_mark_dynamic_ref)
+ (struct elf_link_hash_entry *h, void *inf);
+
/* This function is called during section gc to discover the section a
particular relocation refers to. */
asection * (*gc_mark_hook)
/* This function, if defined, is called after all local symbols and
global symbols converted to locals are emitted into the symtab
- section. It allows the backend to emit special global symbols
+ section. It allows the backend to emit special local symbols
not handled in the hash table. */
+ bfd_boolean (*elf_backend_output_arch_local_syms)
+ (bfd *, struct bfd_link_info *, void *,
+ bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
+ struct elf_link_hash_entry *));
+
+ /* This function, if defined, is called after all symbols are emitted
+ into the symtab section. It allows the backend to emit special
+ global symbols not handled in the hash table. */
bfd_boolean (*elf_backend_output_arch_syms)
(bfd *, struct bfd_link_info *, void *,
bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
newly created and plt/got refcounts and dynamic indices should not
be copied. */
void (*elf_backend_copy_indirect_symbol)
- (const struct elf_backend_data *, struct elf_link_hash_entry *,
+ (struct bfd_link_info *, struct elf_link_hash_entry *,
struct elf_link_hash_entry *);
/* Modify any information related to dynamic linking such that the
void (*elf_backend_hide_symbol)
(struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
+ /* A function to do additional symbol fixup, called by
+ _bfd_elf_fix_symbol_flags. */
+ bfd_boolean (*elf_backend_fixup_symbol)
+ (struct bfd_link_info *, struct elf_link_hash_entry *);
+
/* Merge the backend specific symbol attribute. */
void (*elf_backend_merge_symbol_attribute)
(struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean,
bfd_boolean);
+ /* Decide whether an undefined symbol is special and can be ignored.
+ This is the case for OPTIONAL symbols on IRIX. */
+ bfd_boolean (*elf_backend_ignore_undef_symbol)
+ (struct elf_link_hash_entry *);
+
/* Emit relocations. Overrides default routine for emitting relocs,
except during a relocatable link, or if all relocs are being emitted. */
bfd_boolean (*elf_backend_emit_relocs)
- (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *);
+ (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry **);
/* Count relocations. Not called for relocatable links
or if all relocs are being preserved in the output. */
bfd_boolean (*elf_backend_ignore_discarded_relocs)
(asection *);
+ /* What to do when ld finds relocations against symbols defined in
+ discarded sections. */
+ unsigned int (*action_discarded)
+ (asection *);
+
+ /* This function returns the width of FDE pointers in bytes, or 0 if
+ that can't be determined for some reason. The default definition
+ goes by the bfd's EI_CLASS. */
+ unsigned int (*elf_backend_eh_frame_address_size)
+ (bfd *, asection *);
+
/* These functions tell elf-eh-frame whether to attempt to turn
absolute or lsda encodings into pc-relative ones. The default
definition enables these transformations. */
see elf.c, elfcode.h. */
bfd *(*elf_backend_bfd_from_remote_memory)
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
- int (*target_read_memory) (bfd_vma vma, char *myaddr, int len));
+ int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, int len));
/* This function is used by `_bfd_elf_get_synthetic_symtab';
see elf.c. */
bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
+ /* Is symbol defined in common section? */
+ bfd_boolean (*common_definition) (Elf_Internal_Sym *);
+
+ /* Return a common section index for section. */
+ unsigned int (*common_section_index) (asection *);
+
+ /* Return a common section for section. */
+ asection *(*common_section) (asection *);
+
+ /* Return TRUE if we can merge 2 definitions. */
+ bfd_boolean (*merge_symbol) (struct bfd_link_info *,
+ struct elf_link_hash_entry **,
+ struct elf_link_hash_entry *,
+ Elf_Internal_Sym *, asection **,
+ bfd_vma *, unsigned int *,
+ bfd_boolean *, bfd_boolean *,
+ bfd_boolean *, bfd_boolean *,
+ bfd_boolean *, bfd_boolean *,
+ bfd_boolean *, bfd_boolean *,
+ bfd *, asection **,
+ bfd_boolean *, bfd_boolean *,
+ bfd_boolean *, bfd_boolean *,
+ bfd *, asection **);
+
/* Used to handle bad SHF_LINK_ORDER input. */
bfd_error_handler_type link_order_error_handler;
const struct elf_size_info *s;
- /* An array of target specific special section map. */
+ /* An array of target specific special sections. */
const struct bfd_elf_special_section *special_sections;
- /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
- .got section */
- bfd_vma got_symbol_offset;
-
/* The size in bytes of the header for the GOT. This includes the
so-called reserved entries on some systems. */
bfd_vma got_header_size;
/* The number of relocations currently assigned to REL_HDR2. */
unsigned int rel_count2;
- /* The ELF section number of this section. Only used for an output
- file. */
+ /* The ELF section number of this section. */
int this_idx;
/* The ELF section number of the reloc section indicated by
void *sec_info;
};
-#define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
+#define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
#define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
#define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
#define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
&& (sec)->sec_info_type != ELF_INFO_TYPE_MERGE \
&& (sec)->sec_info_type != ELF_INFO_TYPE_JUST_SYMS)
+#define xvec_get_elf_backend_data(xvec) \
+ ((struct elf_backend_data *) (xvec)->backend_data)
+
#define get_elf_backend_data(abfd) \
- ((const struct elf_backend_data *) (abfd)->xvec->backend_data)
+ xvec_get_elf_backend_data ((abfd)->xvec)
/* This struct is used to pass information to routines called via
elf_link_hash_traverse which must return failure. */
unsigned int cverrefs;
/* Segment flags for the PT_GNU_STACK segment. */
- unsigned int stack_flags;
+ unsigned int stack_flags;
/* Should the PT_GNU_RELRO segment be emitted? */
bfd_boolean relro;
extern Elf_Internal_Sym *bfd_elf_get_elf_syms
(bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
Elf_External_Sym_Shndx *);
-extern const char *bfd_elf_local_sym_name
- (bfd *, Elf_Internal_Sym *);
+extern const char *bfd_elf_sym_name
+ (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *);
extern bfd_boolean _bfd_elf_copy_private_bfd_data
(bfd *, bfd *);
extern void bfd_elf_print_symbol
(bfd *, void *, asymbol *, bfd_print_symbol_type);
-#define elf_string_from_elf_strtab(abfd, strindex) \
- bfd_elf_string_from_elf_section (abfd, elf_elfheader(abfd)->e_shstrndx, \
- strindex)
-
extern void _bfd_elf_sprintf_vma
(bfd *, char *, bfd_vma);
extern void _bfd_elf_fprintf_vma
(bfd *, void *, bfd_vma);
+extern unsigned int _bfd_elf_eh_frame_address_size
+ (bfd *, asection *);
extern bfd_byte _bfd_elf_encode_eh_address
(bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset,
asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded);
extern Elf_Internal_Shdr *bfd_elf_find_section
(bfd *, char *);
extern bfd_boolean _bfd_elf_make_section_from_shdr
- (bfd *, Elf_Internal_Shdr *, const char *);
+ (bfd *, Elf_Internal_Shdr *, const char *, int);
extern bfd_boolean _bfd_elf_make_section_from_phdr
(bfd *, Elf_Internal_Phdr *, int, const char *);
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
(bfd *);
extern void _bfd_elf_link_hash_copy_indirect
- (const struct elf_backend_data *, struct elf_link_hash_entry *,
+ (struct bfd_link_info *, struct elf_link_hash_entry *,
struct elf_link_hash_entry *);
extern void _bfd_elf_link_hash_hide_symbol
(struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
+extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
+ (struct bfd_link_info *, struct elf_link_hash_entry *);
extern bfd_boolean _bfd_elf_link_hash_table_init
(struct elf_link_hash_table *, bfd *,
struct bfd_hash_entry *(*)
- (struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+ (struct bfd_hash_entry *, struct bfd_hash_table *, const char *),
+ unsigned int);
extern bfd_boolean _bfd_elf_slurp_version_tables
- (bfd *);
+ (bfd *, bfd_boolean);
extern bfd_boolean _bfd_elf_merge_sections
(bfd *, struct bfd_link_info *);
+extern bfd_boolean _bfd_elf_match_sections_by_type
+ (bfd *, const asection *, bfd *, const asection *);
extern bfd_boolean bfd_elf_is_group_section
(bfd *, const struct bfd_section *);
-extern bfd_boolean bfd_elf_discard_group
- (bfd *, struct bfd_section *);
extern void _bfd_elf_section_already_linked
(bfd *, struct bfd_section *);
extern void bfd_elf_set_group_contents
(bfd *, asection *, void *);
+extern asection *_bfd_elf_check_kept_section
+ (asection *);
extern void _bfd_elf_link_just_syms
(asection *, struct bfd_link_info *);
extern bfd_boolean _bfd_elf_copy_private_header_data
(bfd *, bfd *);
extern bfd_boolean _bfd_elf_copy_private_symbol_data
(bfd *, asymbol *, bfd *, asymbol *);
+#define _bfd_generic_init_private_section_data \
+ _bfd_elf_init_private_section_data
+extern bfd_boolean _bfd_elf_init_private_section_data
+ (bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
extern bfd_boolean _bfd_elf_copy_private_section_data
(bfd *, asection *, bfd *, asection *);
extern bfd_boolean _bfd_elf_write_object_contents
extern bfd_boolean _bfd_elf_find_nearest_line
(bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
unsigned int *);
+extern bfd_boolean _bfd_elf_find_line
+ (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
+#define _bfd_generic_find_line _bfd_elf_find_line
+extern bfd_boolean _bfd_elf_find_inliner_info
+ (bfd *, const char **, const char **, unsigned int *);
#define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
#define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
extern int _bfd_elf_sizeof_headers
(bfd *, asection *);
extern bfd_boolean _bfd_elf_init_reloc_shdr
(bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean);
+extern const struct bfd_elf_special_section *_bfd_elf_get_special_section
+ (const char *, const struct bfd_elf_special_section *, unsigned int);
extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr
- (bfd *, const char *);
+ (bfd *, asection *);
/* If the target doesn't have reloc handling written yet: */
extern void _bfd_elf_no_info_to_howto
extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
(bfd *, struct bfd_link_info *);
extern bfd_vma _bfd_elf_eh_frame_section_offset
- (bfd *, asection *, bfd_vma);
+ (bfd *, struct bfd_link_info *, asection *, bfd_vma);
extern bfd_boolean _bfd_elf_write_section_eh_frame
(bfd *, struct bfd_link_info *, asection *, bfd_byte *);
extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
extern bfd_boolean _bfd_elf_merge_symbol
(bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
- asection **, bfd_vma *, struct elf_link_hash_entry **, bfd_boolean *,
+ asection **, bfd_vma *, unsigned int *,
+ struct elf_link_hash_entry **, bfd_boolean *,
bfd_boolean *, bfd_boolean *, bfd_boolean *);
extern bfd_boolean _bfd_elf_add_default_symbol
(bfd *, struct bfd_link_info *);
extern bfd_boolean _bfd_elf_create_got_section
(bfd *, struct bfd_link_info *);
-extern unsigned long _bfd_elf_link_renumber_dynsyms
- (bfd *, struct bfd_link_info *);
+extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym
+ (bfd *, struct bfd_link_info *, asection *, const char *);
extern bfd_boolean _bfd_elfcore_make_pseudosection
(bfd *, char *, size_t, ufile_ptr);
(bfd *, Elf_Internal_Shdr *, asection *);
extern bfd_boolean _bfd_elf_link_output_relocs
- (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *);
+ (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry **);
extern bfd_boolean _bfd_elf_fix_symbol_flags
(struct elf_link_hash_entry *, struct elf_info_failed *);
extern bfd_boolean bfd_elf_match_symbols_in_sections
(asection *sec1, asection *sec2);
-extern bfd_boolean _bfd_elf_setup_group_pointers
+extern bfd_boolean _bfd_elf_setup_sections
(bfd *);
extern const bfd_target *bfd_elf32_object_p
extern bfd_boolean _bfd_elf_close_and_cleanup
(bfd *);
+
+extern bfd_boolean _bfd_elf_common_definition
+ (Elf_Internal_Sym *);
+
+extern unsigned int _bfd_elf_common_section_index
+ (asection *);
+
+extern asection *_bfd_elf_common_section
+ (asection *);
+
+extern void _bfd_dwarf2_cleanup_debug_info
+ (bfd *);
+
extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
(bfd *, arelent *, struct bfd_symbol *, void *,
asection *, bfd *, char **);
extern bfd_boolean bfd_elf_final_link
(bfd *, struct bfd_link_info *);
+extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
+ (struct elf_link_hash_entry *h, void *inf);
+
extern bfd_boolean bfd_elf_gc_sections
(bfd *, struct bfd_link_info *);
extern bfd *_bfd_elf32_bfd_from_remote_memory
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
- int (*target_read_memory) (bfd_vma, char *, int));
+ int (*target_read_memory) (bfd_vma, bfd_byte *, int));
extern bfd *_bfd_elf64_bfd_from_remote_memory
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
- int (*target_read_memory) (bfd_vma, char *, int));
+ int (*target_read_memory) (bfd_vma, bfd_byte *, int));
+
+/* Large common section. */
+extern asection _bfd_elf_large_com_section;
/* SH ELF specific routine. */
projects / deliverable / binutils-gdb.git / blobdiff