/* 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, 2008, 2009
+ 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Written by Cygnus Support.
bfd_boolean table;
};
+/* 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 elf_link_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;
#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)
/* 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;
/* 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 4..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. */
+ /* 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 TRUE if the linker should act like collect and gather
#define get_elf_backend_data(abfd) \
xvec_get_elf_backend_data ((abfd)->xvec)
+/* 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 71
Tag_compatibility = 32
};
-/* Enum used to identify target specific extensions to the elf_obj_tdata
- structure. 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_object_id
-{
- ALPHA_ELF_TDATA = 1,
- ARM_ELF_TDATA,
- HPPA_ELF_TDATA,
- I386_ELF_TDATA,
- MIPS_ELF_TDATA,
- PPC32_ELF_TDATA,
- PPC64_ELF_TDATA,
- S390_ELF_TDATA,
- SH_ELF_TDATA,
- SPARC_ELF_TDATA,
- X86_64_ELF_TDATA,
- XTENSA_ELF_TDATA,
- GENERIC_ELF_TDATA
-};
-
/* Some private data is stashed away for future use using the tdata pointer
in the bfd structure. */
/* An identifier used to distinguish different target
specific extensions to this structure. */
- enum elf_object_id object_id;
+ enum elf_target_id object_id;
};
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
extern bfd_reloc_status_type bfd_elf_generic_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
extern bfd_boolean bfd_elf_allocate_object
- (bfd *, size_t, enum elf_object_id);
-extern bfd_boolean bfd_elf_make_generic_object
+ (bfd *, size_t, enum elf_target_id);
+extern bfd_boolean bfd_elf_make_object
(bfd *);
extern bfd_boolean bfd_elf_mkcorefile
(bfd *);
(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_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 *);
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 *);
(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
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) \
+ { \
+ 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 = &elf_section_data (input_section->output_section)->rel_hdr; \
+ \
+ /* Avoid empty output section. */ \
+ if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
+ { \
+ rel_hdr->sh_size -= rel_hdr->sh_entsize; \
+ rel_hdr = &elf_section_data (input_section)->rel_hdr; \
+ rel_hdr->sh_size -= rel_hdr->sh_entsize; \
+ \
+ memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
+ \
+ input_section->reloc_count--; \
+ relend--; \
+ rel--; \
+ continue; \
+ } \
+ } \
+ \
+ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); \
+ 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_ */