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authorNick Clifton <nickc@redhat.com>2009-04-30 15:47:13 +0000
committerNick Clifton <nickc@redhat.com>2009-04-30 15:47:13 +0000
commitd8045f234d8865a7a7bfce71e81fcbeaf4098a7e (patch)
tree31e6bc2d28ac295c02dde51ed85fc561675e29a6 /bfd/elf-bfd.h
parentb22a5a41858f1962abba75900ef9928efca36bcd (diff)
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include/elf
2009-04-30 Nick Clifton <nickc@redhat.com> * common.h (STT_GNU_IFUNC): Define. elfcpp 2009-04-30 Nick Clifton <nickc@redhat.com> * (enum STT): Add STT_GNU_IFUNC. gas 2009-04-30 Nick Clifton <nickc@redhat.com> * config/obj-elf.c (obj_elf_type): Add support for a gnu_indirect_function type. * config/tc-i386.c (tc_i386_fix_adjustable): Do not adjust fixups against indirect function symbols. * doc/as.texinfo (.type): Document the support for the gnu_indirect_function symbol type. * NEWS: Mention the new feature. gas/testsuite 2009-04-30 Nick Clifton <nickc@redhat.com> * gas/elf/elf.exp: Extend type test to include an ifunc symbol. Provide an alternative test for targets which do not support ifunc symbols. (type.s): Add entry for an ifunc symbol. (type.e): Add ifunc entry to expected symbol dump. (section2.e-armelf): Add entry for ifunc symbol. (type-noifunc.s): New file. (type-noifunc.e): New file. bfd/ 2009-04-30 Nick Clifton <nickc@redhat.com> * elf-bfd.h (struct bfd_elf_section_data): Add indirect_relocs section pointer. (struct elf_obj_data): Add has_ifunc_symbols boolean. * elf.c (swap_out_syms): Convert BSF_GNU_INDIRECT_FUNCTION flags into a STT_GNU_IFUNC symbol type. (_bfd_elf_is_function_type): Accept STT_GNU_IFUNC as a function type. (_bfd_elf_set_osabi): Set the osasbi field to ELFOSABI_LINUX if the binary contains ifunc symbols. * elfcode.h (elf_slurp_symbol_table): Translate the STT_GNU_IFUNC symbol type into a BSF_GNU_INDIRECT_FUNCTION flag. * elf32-i386.c (is_indirect_function): New function. (elf_i386_check_relocs): Create an ifunc output section. (allocate_dynrelocs): Create dynamic relocs in the ifunc output section if necessary. (elf_i386_relocate_section): Emit a reloc against an ifunc symbol if necessary. (elf_i386_add_symbol_hook): New function. Set the has_ifunc_symbols field of the elf_obj_data structure if an ifunc symbol is encountered. (elf_backend_post_process_headers): Define. (elf_backend_add_symbol_hook): Define. (elf_i386_post_process_headers): Rename to elf_i388_fbsd_post_process_headers. * elf64-x86_64.c (IS_X86_64_PCREL_TYPE): New macro. (is_indirect_function): New function. (elf64_x86_64_check_relocs): Create an ifunc output section. (allocate_dynrelocs): Create dynamic relocs in the ifunc output section if necessary. (elf64_x86_64_relocate_section): Emit a reloc against an ifunc symbol if necessary. (elf_i386_add_symbol_hook): Set the has_ifunc_symbols field of the elf_obj_data structure if an ifunc symbol is encountered. (elf_backend_post_process_headers): Define. * elflink.c (_bfd_elf_adjust_dynamic_symbol): Always create a PLT if we have ifunc symbols to handle. (get_ifunc_reloc_section_name): New function. Computes the name for an ifunc section. (_bfd_elf_make_ifunc_reloc_section): New function. Creates a section to hold ifunc relocs. * syms.c (BSF_GNU_INDIRECT_FUNCTION): Define. (bfd_print_symbol_vandf): Handle ifunc symbols. (bfd_decode_symclass): Likewise. * bfd-in2.h: Regenerate. binutils 2009-04-30 Nick Clifton <nickc@redhat.com> * readelf.c (dump_relocations): Display a relocation against an ifunc symbol as if it were a function invocation. (get_symbol_type): Handle STT_GNU_IFUNC. ld 2009-04-30 Nick Clifton <nickc@redhat.com> * NEWS: Mention support for IFUNC symbols. ld/testsuite 2009-04-30 Nick Clifton <nickc@redhat.com> * ld-ifunc: New directory. * ld-ifunc/ifunc.exp: New file: Run the IFUNC tests. * ld-ifunc/prog.c: New file. * ld-ifunc/lib.c: New file.
Diffstat (limited to 'bfd/elf-bfd.h')
-rw-r--r--bfd/elf-bfd.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 865388c..5761923 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1297,6 +1297,9 @@ struct bfd_elf_section_data
/* A pointer to the bfd section used for dynamic relocs. */
asection *sreloc;
+ /* A pointer to the bfd section used for dynamic relocs against ifunc symbols. */
+ asection *indirect_relocs;
+
union {
/* Group name, if this section is a member of a group. */
const char *name;
@@ -1559,6 +1562,11 @@ struct elf_obj_tdata
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_object_id object_id;
@@ -2139,6 +2147,9 @@ 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 asection * _bfd_elf_make_ifunc_reloc_section
+ (bfd *, asection *, bfd *, unsigned int);
+
/* Large common section. */
extern asection _bfd_elf_large_com_section;