/* BFD back-end data structures for ELF files.
Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
#define _LIBELF_H_ 1
#include "elf/common.h"
-#include "elf/internal.h"
#include "elf/external.h"
+#include "elf/internal.h"
#include "bfdlink.h"
/* The number of entries in a section is its size divided by the size
of a single entry. This is normally only applicable to reloc and
- symbol table sections. */
-#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
+ symbol table sections.
+ PR 9934: It is possible to have relocations that do not refer to
+ symbols, thus it is also possible to have a relocation section in
+ an object file, but no symbol table. */
+#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
/* If size isn't specified as 64 or 32, NAME macro should fail. */
#ifndef NAME
struct got_entry;
struct plt_entry;
+union gotplt_union
+ {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ struct got_entry *glist;
+ struct plt_entry *plist;
+ };
+
+struct elf_link_virtual_table_entry
+ {
+ /* Virtual table entry use information. This array is nominally of size
+ size/sizeof(target_void_pointer), though we have to be able to assume
+ and track a size while the symbol is still undefined. It is indexed
+ via offset/sizeof(target_void_pointer). */
+ size_t size;
+ bfd_boolean *used;
+
+ /* Virtual table derivation info. */
+ struct elf_link_hash_entry *parent;
+ };
+
/* ELF linker hash table entries. */
struct elf_link_hash_entry
require a global offset table entry. The second scheme allows
multiple GOT entries per symbol, managed via a linked list
pointed to by GLIST. */
- union gotplt_union
- {
- bfd_signed_vma refcount;
- bfd_vma offset;
- struct got_entry *glist;
- struct plt_entry *plist;
- } got;
+ union gotplt_union got;
/* Same, but tracks a procedure linkage table entry. */
union gotplt_union plt;
/* Symbol st_other value, symbol visibility. */
unsigned int other : 8;
- /* Symbol is referenced by a non-shared object. */
+ /* Symbol is referenced by a non-shared object (other than the object
+ in which it is defined). */
unsigned int ref_regular : 1;
/* Symbol is defined by a non-shared object. */
unsigned int def_regular : 1;
unsigned int ref_dynamic : 1;
/* Symbol is defined by a shared object. */
unsigned int def_dynamic : 1;
- /* Symbol has a non-weak reference from a non-shared object. */
+ /* Symbol has a non-weak reference from a non-shared object (other than
+ the object in which it is defined). */
unsigned int ref_regular_nonweak : 1;
/* Dynamic symbol has been adjustd. */
unsigned int dynamic_adjusted : 1;
/* Symbol is referenced with a relocation where C/C++ pointer equality
matters. */
unsigned int pointer_equality_needed : 1;
+ /* Symbol is a unique global symbol. */
+ unsigned int unique_global : 1;
/* String table index in .dynstr if this is a dynamic symbol. */
unsigned long dynstr_index;
struct bfd_elf_version_tree *vertree;
} verinfo;
- struct
- {
- /* Virtual table entry use information. This array is nominally of size
- size/sizeof(target_void_pointer), though we have to be able to assume
- and track a size while the symbol is still undefined. It is indexed
- via offset/sizeof(target_void_pointer). */
- size_t size;
- bfd_boolean *used;
-
- /* Virtual table derivation info. */
- struct elf_link_hash_entry *parent;
- } *vtable;
+ struct elf_link_virtual_table_entry *vtable;
};
/* Will references to this symbol always reference the symbol
struct eh_cie_fde *next_for_section;
} fde;
struct {
- /* In general, equivalent CIEs are grouped together, with one CIE
- representing all the others in a group. If REMOVED == 0,
- this CIE is the group representative. If REMOVED == 1,
- following this pointer brings us "closer" to the CIE's group
- representative, and reapplying always gives the representative. */
- struct eh_cie_fde *merged;
+ /* CIEs have three states:
+
+ - REMOVED && !MERGED: Slated for removal because we haven't yet
+ proven that an FDE needs it. FULL_CIE, if nonnull, points to
+ more detailed information about the CIE.
+
+ - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
+ which may not belong to the same input section.
+
+ - !REMOVED: We have decided to keep this CIE. SEC is the
+ .eh_frame input section that contains the CIE. */
+ union {
+ struct cie *full_cie;
+ struct eh_cie_fde *merged_with;
+ asection *sec;
+ } u;
+
+ /* The offset of the personality data from the start of the CIE,
+ or 0 if the CIE doesn't have any. */
+ unsigned int personality_offset : 8;
/* True if we have marked relocations associated with this CIE. */
unsigned int gc_mark : 1;
+
+ /* True if we have decided to turn an absolute LSDA encoding into
+ a PC-relative one. */
+ unsigned int make_lsda_relative : 1;
+
+ /* True if we have decided to turn an absolute personality
+ encoding into a PC-relative one. */
+ unsigned int make_per_encoding_relative : 1;
+
+ /* True if the CIE contains personality data and if that
+ data uses a PC-relative encoding. Always true when
+ make_per_encoding_relative is. */
+ unsigned int per_encoding_relative : 1;
+
+ /* True if we need to add an 'R' (FDE encoding) entry to the
+ CIE's augmentation data. */
+ unsigned int add_fde_encoding : 1;
+
+ /* True if we have merged this CIE with another. */
+ unsigned int merged : 1;
+
+ /* Unused bits. */
+ unsigned int pad1 : 18;
} cie;
} u;
unsigned int reloc_index;
unsigned int fde_encoding : 8;
unsigned int lsda_encoding : 8;
unsigned int lsda_offset : 8;
+
+ /* True if this entry represents a CIE, false if it represents an FDE. */
unsigned int cie : 1;
+
+ /* True if this entry is currently marked for removal. */
unsigned int removed : 1;
+
+ /* True if we need to add a 'z' (augmentation size) entry to the CIE's
+ augmentation data, and an associated byte to each of the CIE's FDEs. */
unsigned int add_augmentation_size : 1;
- unsigned int add_fde_encoding : 1;
+
+ /* True if we have decided to convert absolute FDE relocations into
+ relative ones. This applies to the first relocation in the FDE,
+ which is against the code that the FDE describes. */
unsigned int make_relative : 1;
- unsigned int make_lsda_relative : 1;
- unsigned int need_lsda_relative : 1;
- unsigned int per_encoding_relative : 1;
+
+ /* Unused bits. */
+ unsigned int pad1 : 4;
+
unsigned int *set_loc;
};
struct eh_frame_sec_info
{
unsigned int count;
+ struct cie *cies;
struct eh_cie_fde entry[1];
};
asection *hdr_sec;
unsigned int fde_count, array_count;
struct eh_frame_array_ent *array;
+ /* TRUE if we should try to merge CIEs between input sections. */
+ bfd_boolean merge_cies;
/* TRUE if all .eh_frames have been parsd. */
bfd_boolean parsed_eh_frames;
/* 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;
+};
+
+/* Enum used to identify target specific extensions to the elf_obj_tdata
+ and elf_link_hash_table structures. Note the enums deliberately start
+ from 1 so that we can detect an uninitialized field. The generic value
+ is last so that additions to this enum do not need to modify more than
+ one line. */
+enum elf_target_id
+{
+ ALPHA_ELF_DATA = 1,
+ ARM_ELF_DATA,
+ AVR_ELF_DATA,
+ BFIN_ELF_DATA,
+ CRIS_ELF_DATA,
+ FRV_ELF_DATA,
+ HPPA32_ELF_DATA,
+ HPPA64_ELF_DATA,
+ I386_ELF_DATA,
+ IA64_ELF_DATA,
+ LM32_ELF_DATA,
+ M32R_ELF_DATA,
+ M68HC11_ELF_DATA,
+ M68K_ELF_DATA,
+ MICROBLAZE_ELF_DATA,
+ MIPS_ELF_DATA,
+ MN10300_ELF_DATA,
+ PPC32_ELF_DATA,
+ PPC64_ELF_DATA,
+ S390_ELF_DATA,
+ SH_ELF_DATA,
+ SPARC_ELF_DATA,
+ SPU_ELF_DATA,
+ TIC6X_ELF_DATA,
+ X86_64_ELF_DATA,
+ XTENSA_ELF_DATA,
+ GENERIC_ELF_DATA
};
/* ELF linker hash table. */
{
struct bfd_link_hash_table root;
+ /* An identifier used to distinguish different target
+ specific extensions to this structure. */
+ enum elf_target_id hash_table_id;
+
/* Whether we have created the special dynamic sections required
when linking against or generating a shared object. */
bfd_boolean dynamic_sections_created;
/* A linked list of BFD's loaded in the link. */
struct elf_link_loaded_list *loaded;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sgot;
+ asection *sgotplt;
+ asection *srelgot;
+ asection *splt;
+ asection *srelplt;
+ asection *igotplt;
+ asection *iplt;
+ asection *irelplt;
+ asection *irelifunc;
};
/* Look up an entry in an ELF linker hash table. */
#define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
+#define elf_hash_table_id(table) ((table) -> hash_table_id)
+
/* Returns TRUE if the hash table is a struct elf_link_hash_table. */
#define is_elf_hash_table(htab) \
(((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
-/* Used by bfd_section_from_r_symndx to cache a small number of local
- symbol to section mappings. */
+/* Used by bfd_sym_from_r_symndx to cache a small number of local
+ symbols. */
#define LOCAL_SYM_CACHE_SIZE 32
-struct sym_sec_cache
+struct sym_cache
{
bfd *abfd;
unsigned long indx[LOCAL_SYM_CACHE_SIZE];
- unsigned int shndx[LOCAL_SYM_CACHE_SIZE];
+ Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE];
};
\f
/* Constant information held for an ELF backend. */
PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
int suffix_length;
int type;
- int attr;
+ bfd_vma attr;
};
enum action_discarded
/* The architecture for this backend. */
enum bfd_architecture arch;
+ /* An identifier used to distinguish different target specific
+ extensions to elf_obj_tdata and elf_link_hash_table structures. */
+ enum elf_target_id target_id;
+
/* The ELF machine code (EM_xxxx) for this backend. */
int elf_machine_code;
const char **name, flagword *flags, asection **sec, bfd_vma *value);
/* If this field is not NULL, it is called by the elf_link_output_sym
- phase of a link for each symbol which will appear in the object file. */
- bfd_boolean (*elf_backend_link_output_symbol_hook)
+ phase of a link for each symbol which will appear in the object file.
+ On error, this function returns 0. 1 is returned when the symbol
+ should be output, 2 is returned when the symbol should be discarded. */
+ int (*elf_backend_link_output_symbol_hook)
(struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
asection *, struct elf_link_hash_entry *);
bfd_boolean (*elf_backend_modify_program_headers)
(bfd *, struct bfd_link_info *);
+ /* This function is called before section garbage collection to
+ mark entry symbol sections. */
+ void (*gc_keep)
+ (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);
+ (struct elf_link_hash_entry *, void *);
/* This function is called during section gc to discover the section a
particular relocation refers to. */
/* This function, if defined, is called after the first gc marking pass
to allow the backend to mark additional sections. */
bfd_boolean (*gc_mark_extra_sections)
- (struct bfd_link_info *info, elf_gc_mark_hook_fn gc_mark_hook);
+ (struct bfd_link_info *, elf_gc_mark_hook_fn);
/* This function, if defined, is called during the sweep phase of gc
in order that a backend might update any data structures it might
be maintaining. */
bfd_boolean (*gc_sweep_hook)
- (bfd *abfd, struct bfd_link_info *info, asection *o,
- const Elf_Internal_Rela *relocs);
+ (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
/* This function, if defined, is called after the ELF headers have
been created. This allows for things like the OS and ABI versions
(struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean,
bfd_boolean);
+ /* This function, if defined, will return a string containing the
+ name of a target-specific dynamic tag. */
+ char *(*elf_backend_get_target_dtag)
+ (bfd_vma);
+
/* 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)
/* Count relocations. Not called for relocatable links
or if all relocs are being preserved in the output. */
unsigned int (*elf_backend_count_relocs)
- (asection *, Elf_Internal_Rela *);
+ (struct bfd_link_info *, asection *);
/* This function, if defined, is called when an NT_PRSTATUS note is found
in a core file. */
so-called reserved entries on some systems. */
bfd_vma got_header_size;
+ /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
+ otherwise by the local symbol with index SYMNDX in IBFD. */
+ bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *,
+ struct elf_link_hash_entry *h,
+ bfd *ibfd, unsigned long symndx);
+
/* The vendor name to use for a processor-standard attributes section. */
const char *obj_attrs_vendor;
/* The section type to use for an attributes section. */
unsigned int obj_attrs_section_type;
+ /* This function determines the order in which any attributes are
+ written. It must be defined for input in the range
+ LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
+ is used in order to make unity easy). The returned value is the
+ actual tag number to place in the input position. */
+ int (*obj_attrs_order) (int);
+
+ /* This is non-zero if static TLS segments require a special alignment. */
+ unsigned static_tls_alignment;
+
/* This is TRUE if the linker should act like collect and gather
global constructors and destructors by name. This is TRUE for
MIPS ELF because the Irix 5 tools can not handle the .init
section. */
unsigned default_use_rela_p : 1;
+ /* True if PLT and copy relocations should be RELA by default. */
+ unsigned rela_plts_and_copies_p : 1;
+
/* Set if RELA relocations for a relocatable link can be handled by
generic code. Backends that set this flag need do nothing in the
backend relocate_section routine for relocatable linking. */
unsigned default_execstack : 1;
};
+/* Information about reloc sections associated with a bfd_elf_section_data
+ structure. */
+struct bfd_elf_section_reloc_data
+{
+ /* The ELF header for the reloc section associated with this
+ section, if any. */
+ Elf_Internal_Shdr *hdr;
+ /* The number of relocations currently assigned to HDR. */
+ unsigned int count;
+ /* The ELF section number of the reloc section. Only used for an
+ output file. */
+ int idx;
+ /* Used by the backend linker to store the symbol hash table entries
+ associated with relocs against global symbols. */
+ struct elf_link_hash_entry **hashes;
+};
+
/* Information stored for each BFD section in an ELF file. This
structure is allocated by elf_new_section_hook. */
/* The ELF header for this section. */
Elf_Internal_Shdr this_hdr;
- /* The ELF header for the reloc section associated with this
- section, if any. */
- Elf_Internal_Shdr rel_hdr;
-
- /* If there is a second reloc section associated with this section,
- as can happen on Irix 6, this field points to the header. */
- Elf_Internal_Shdr *rel_hdr2;
-
- /* The number of relocations currently assigned to REL_HDR. */
- unsigned int rel_count;
-
- /* The number of relocations currently assigned to REL_HDR2. */
- unsigned int rel_count2;
+ /* Information about the REL and RELA reloc sections associated
+ with this section, if any. */
+ struct bfd_elf_section_reloc_data rel, rela;
/* The ELF section number of this section. */
int this_idx;
- /* The ELF section number of the reloc section indicated by
- REL_HDR if any. Only used for an output file. */
- int rel_idx;
-
- /* The ELF section number of the reloc section indicated by
- REL_HDR2 if any. Only used for an output file. */
- int rel_idx2;
-
/* Used by the backend linker when generating a shared library to
record the dynamic symbol index for a section symbol
corresponding to this section. A value of 0 means that there is
/* A pointer to the linked-to section for SHF_LINK_ORDER. */
asection *linked_to;
- /* 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 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. */
#define get_elf_backend_data(abfd) \
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. */
-
-struct elf_info_failed
-{
- bfd_boolean failed;
- struct bfd_link_info *info;
- struct bfd_elf_version_tree *verdefs;
-};
-
-/* This structure is used to pass information to
- _bfd_elf_link_assign_sym_version. */
-
-struct elf_assign_sym_version_info
-{
- /* Output BFD. */
- bfd *output_bfd;
- /* General link information. */
- struct bfd_link_info *info;
- /* Version tree. */
- struct bfd_elf_version_tree *verdefs;
- /* Whether we had a failure. */
- bfd_boolean failed;
-};
-
-/* This structure is used to pass information to
- _bfd_elf_link_find_version_dependencies. */
-
-struct elf_find_verdep_info
-{
- /* Output BFD. */
- bfd *output_bfd;
- /* General link information. */
- struct bfd_link_info *info;
- /* The number of dependencies. */
- unsigned int vers;
- /* Whether we had a failure. */
- bfd_boolean failed;
-};
+/* The least object attributes (within an attributes subsection) known
+ for any target. Some code assumes that the value 0 is not used and
+ the field for that attribute can instead be used as a marker to
+ indicate that attributes have been initialized. */
+#define LEAST_KNOWN_OBJ_ATTRIBUTE 2
/* The maximum number of known object attributes for any target. */
-#define NUM_KNOWN_OBJ_ATTRIBUTES 32
+#define NUM_KNOWN_OBJ_ATTRIBUTES 71
-/* The value of an object attribute. type & 1 indicates whether there
- is an integer value; type & 2 indicates whether there is a string
- value. */
+/* The value of an object attribute. The type indicates whether the attribute
+ holds and integer, a string, or both. It can also indicate that there can
+ be no default (i.e. all values must be written to file, even zero). */
typedef struct obj_attribute
{
+#define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
+#define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
+#define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
+
+#define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
+#define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
+#define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
+
int type;
unsigned int i;
char *s;
one. */
const char *dt_name;
+ /* The linker emulation needs to know what audit libs
+ are used by a dynamic object. */
+ const char *dt_audit;
+
/* Records the result of `get_program_header_size'. */
bfd_size_type program_header_size;
/* NT_GNU_BUILD_ID note type. */
bfd_size_type build_id_size;
bfd_byte *build_id;
+
+ /* True if the bfd contains symbols that have the STT_GNU_IFUNC
+ symbol type. Used to set the osabi field in the ELF header
+ structure. */
+ bfd_boolean has_ifunc_symbols;
+
+ /* An identifier used to distinguish different target
+ specific extensions to this structure. */
+ enum elf_target_id object_id;
};
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
+
+#define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
+#define elf_program_header_size(bfd) (elf_tdata(bfd) -> program_header_size)
#define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
#define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
#define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
#define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
#define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section)
+#define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
#define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
#define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
#define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
#define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
#define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
+#define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
#define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
#define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
#define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
extern void _bfd_elf_swap_versym_out
(bfd *, const Elf_Internal_Versym *, Elf_External_Versym *);
-extern int _bfd_elf_section_from_bfd_section
+extern unsigned int _bfd_elf_section_from_bfd_section
(bfd *, asection *);
extern char *bfd_elf_string_from_elf_section
(bfd *, unsigned, unsigned);
-extern char *bfd_elf_get_str_section
- (bfd *, unsigned);
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 bfd_reloc_status_type bfd_elf_generic_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-extern bfd_boolean bfd_elf_mkobject
+extern bfd_boolean bfd_elf_allocate_object
+ (bfd *, size_t, enum elf_target_id);
+extern bfd_boolean bfd_elf_make_object
(bfd *);
extern bfd_boolean bfd_elf_mkcorefile
(bfd *);
-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 *, int);
extern bfd_boolean _bfd_elf_make_section_from_phdr
(struct elf_link_hash_table *, bfd *,
struct bfd_hash_entry *(*)
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *),
- unsigned int);
+ unsigned int, enum elf_target_id);
extern bfd_boolean _bfd_elf_slurp_version_tables
(bfd *, bfd_boolean);
extern bfd_boolean _bfd_elf_merge_sections
(asection *, struct bfd_link_info *);
extern void _bfd_elf_link_just_syms
(asection *, struct bfd_link_info *);
+extern void _bfd_elf_copy_link_hash_symbol_type
+ (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *);
+extern bfd_boolean _bfd_elf_size_group_sections
+ (struct bfd_link_info *);
+extern bfd_boolean _bfd_elf_fixup_group_sections
+(bfd *, asection *);
extern bfd_boolean _bfd_elf_copy_private_header_data
(bfd *, bfd *);
extern bfd_boolean _bfd_elf_copy_private_symbol_data
(bfd *, sec_ptr);
extern long _bfd_elf_canonicalize_reloc
(bfd *, sec_ptr, arelent **, asymbol **);
+extern asection * _bfd_elf_get_dynamic_reloc_section
+ (bfd *, asection *, bfd_boolean);
+extern asection * _bfd_elf_make_dynamic_reloc_section
+ (asection *, bfd *, unsigned int, bfd *, bfd_boolean);
extern long _bfd_elf_get_dynamic_reloc_upper_bound
(bfd *);
extern long _bfd_elf_canonicalize_dynamic_reloc
extern bfd_boolean _bfd_elf_new_section_hook
(bfd *, asection *);
extern bfd_boolean _bfd_elf_init_reloc_shdr
- (bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean);
+ (bfd *, struct bfd_elf_section_reloc_data *, 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
extern int _bfd_elf_symbol_from_bfd_symbol
(bfd *, asymbol **);
-extern asection *bfd_section_from_r_symndx
- (bfd *, struct sym_sec_cache *, asection *, unsigned long);
+extern Elf_Internal_Sym *bfd_sym_from_r_symndx
+ (struct sym_cache *, bfd *, unsigned long);
extern asection *bfd_section_from_elf_index
(bfd *, unsigned int);
extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *);
-extern bfd_boolean _bfd_elf_add_default_symbol
- (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- const char *, Elf_Internal_Sym *, asection **, bfd_vma *,
- bfd_boolean *, bfd_boolean);
-
-extern bfd_boolean _bfd_elf_export_symbol
- (struct elf_link_hash_entry *, void *);
-
-extern bfd_boolean _bfd_elf_link_find_version_dependencies
- (struct elf_link_hash_entry *, void *);
-
-extern bfd_boolean _bfd_elf_link_assign_sym_version
- (struct elf_link_hash_entry *, void *);
-
extern long _bfd_elf_link_lookup_local_dynindx
(struct bfd_link_info *, bfd *, long);
extern bfd_boolean _bfd_elf_compute_section_file_positions
extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
(bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
-extern bfd_boolean _bfd_elf_link_size_reloc_section
- (bfd *, Elf_Internal_Shdr *, asection *);
-
extern bfd_boolean _bfd_elf_link_output_relocs
(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_adjust_dynamic_symbol
- (struct elf_link_hash_entry *, void *);
-
extern bfd_boolean _bfd_elf_adjust_dynamic_copy
(struct elf_link_hash_entry *, asection *);
-extern bfd_boolean _bfd_elf_link_sec_merge_syms
- (struct elf_link_hash_entry *, void *);
-
extern bfd_boolean _bfd_elf_dynamic_symbol_p
(struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
(bfd *);
extern bfd_boolean bfd_elf32_core_file_matches_executable_p
(bfd *, bfd *);
+extern int bfd_elf32_core_file_pid
+ (bfd *);
extern bfd_boolean bfd_elf32_swap_symbol_in
(bfd *, const void *, const void *, Elf_Internal_Sym *);
(bfd *);
extern bfd_boolean bfd_elf64_core_file_matches_executable_p
(bfd *, bfd *);
+extern int bfd_elf64_core_file_pid
+ (bfd *);
extern bfd_boolean bfd_elf64_swap_symbol_in
(bfd *, const void *, const void *, Elf_Internal_Sym *);
extern int bfd_elf_link_record_local_dynamic_symbol
(struct bfd_link_info *, bfd *, long);
-extern void bfd_elf_link_mark_dynamic_symbol
- (struct bfd_link_info *, struct elf_link_hash_entry *,
- Elf_Internal_Sym *);
-
extern bfd_boolean _bfd_elf_close_and_cleanup
(bfd *);
extern void _bfd_dwarf2_cleanup_debug_info
(bfd *);
+extern bfd_vma _bfd_elf_default_got_elt_size
+(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *,
+ unsigned long);
+
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 void _bfd_elf_gc_keep
+ (struct bfd_link_info *info);
+
extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
(struct elf_link_hash_entry *h, void *inf);
extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
+extern int bfd_elf_get_default_section_type (flagword);
+
+extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section
+ (bfd * abfd, asection * section);
+
/* Exported interface for writing elf corefile notes. */
extern char *elfcore_write_note
(bfd *, char *, int *, const char *, int, const void *, int);
(bfd *, char *, int *, const void *, int);
extern char *elfcore_write_prxfpreg
(bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_xstatereg
+ (bfd *, char *, int *, const void *, int);
extern char *elfcore_write_ppc_vmx
(bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_ppc_vsx
+ (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_s390_timer
+ (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_s390_todcmp
+ (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_s390_todpreg
+ (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_s390_ctrs
+ (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_s390_prefix
+ (bfd *, char *, int *, const void *, int);
extern char *elfcore_write_lwpstatus
(bfd *, char *, int *, long, int, const void *);
+extern char *elfcore_write_register_note
+ (bfd *, char *, int *, const char *, const void *, int);
extern bfd *_bfd_elf32_bfd_from_remote_memory
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
#define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
-extern void bfd_elf_add_obj_attr_compat (bfd *, int, unsigned int,
- const char *);
-#define bfd_elf_add_proc_attr_compat(BFD, INTVAL, STRVAL) \
- bfd_elf_add_obj_attr_compat ((BFD), OBJ_ATTR_PROC, (INTVAL), (STRVAL))
+extern void bfd_elf_add_obj_attr_int_string (bfd *, int, int, unsigned int,
+ const char *);
+#define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
+ bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
+ (INTVAL), (STRVAL))
extern char *_bfd_elf_attr_strdup (bfd *, const char *);
extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *);
extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, int);
extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
+extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec);
+
+/* The linker may needs to keep track of the number of relocs that it
+ decides to copy as dynamic relocs in check_relocs for each symbol.
+ This is so that it can later discard them if they are found to be
+ unnecessary. We can store the information in a field extending the
+ regular ELF linker hash table. */
+
+struct elf_dyn_relocs
+{
+ struct elf_dyn_relocs *next;
+
+ /* The input section of the reloc. */
+ asection *sec;
+
+ /* Total number of relocs copied for the input section. */
+ bfd_size_type count;
+
+ /* Number of pc-relative relocs copied for the input section. */
+ bfd_size_type pc_count;
+};
+
+extern bfd_boolean _bfd_elf_create_ifunc_sections
+ (bfd *, struct bfd_link_info *);
+extern asection * _bfd_elf_create_ifunc_dyn_reloc
+ (bfd *, struct bfd_link_info *, asection *sec, asection *sreloc,
+ struct elf_dyn_relocs **);
+extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
+ (struct bfd_link_info *, struct elf_link_hash_entry *,
+ struct elf_dyn_relocs **, unsigned int, unsigned int);
/* Large common section. */
extern asection _bfd_elf_large_com_section;
-/* SH ELF specific routine. */
-
-extern bfd_boolean _sh_elf_set_mach_from_flags
- (bfd *);
+/* Hash for local symbol with the first section id, ID, in the input
+ file and the local symbol index, SYM. */
+#define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
+ (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \
+ ^ (SYM) ^ ((ID) >> 16))
/* This is the condition under which finish_dynamic_symbol will be called.
If our finish_dynamic_symbol isn't called, we'll need to do something
return FALSE; \
warned = TRUE; \
} \
+ (void) unresolved_reloc; \
+ (void) warned; \
} \
while (0)
+/* This macro is to avoid lots of duplicated code in the body of the
+ loop over relocations in xxx_relocate_section() in the various
+ elfxx-xxxx.c files.
+
+ Handle relocations against symbols from removed linkonce sections,
+ or sections discarded by a linker script. When doing a relocatable
+ link, we remove such relocations. Otherwise, we just want the
+ section contents zeroed and avoid any special processing. */
+#define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
+ rel, relend, howto, contents) \
+ { \
+ _bfd_clear_contents (howto, input_bfd, input_section, \
+ contents + rel->r_offset); \
+ \
+ if (info->relocatable \
+ && (input_section->flags & SEC_DEBUGGING)) \
+ { \
+ /* Only remove relocations in debug sections since other \
+ sections may require relocations. */ \
+ Elf_Internal_Shdr *rel_hdr; \
+ \
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
+ \
+ /* Avoid empty output section. */ \
+ if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
+ { \
+ rel_hdr->sh_size -= rel_hdr->sh_entsize; \
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
+ rel_hdr->sh_size -= rel_hdr->sh_entsize; \
+ \
+ memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
+ \
+ input_section->reloc_count--; \
+ relend--; \
+ rel--; \
+ continue; \
+ } \
+ } \
+ \
+ rel->r_info = 0; \
+ rel->r_addend = 0; \
+ continue; \
+ }
+
/* Will a symbol be bound to the the definition within the shared
- library, if any. */
+ library, if any. A unique symbol can never be bound locally. */
#define SYMBOLIC_BIND(INFO, H) \
- ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))
+ (!(H)->unique_global \
+ && ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic)))
#endif /* _LIBELF_H_ */
projects / binutils.git / blobdiff