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authorNick Clifton <nickc@redhat.com>2009-07-23 13:00:30 +0000
committerNick Clifton <nickc@redhat.com>2009-07-23 13:00:30 +0000
commit3e7a7d11f1106a451c26b49fcb8fafb5059fd684 (patch)
treeb3d0c290c25b650e408ec3f60e770f56bb1f5be6 /ld
parent6ec8e7022b6b6a69ee682d1797e8bfec473aae11 (diff)
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* config/obj-elf.c (obj_elf_type): Add code to support a type of
gnu_unique_object. * doc/as.texinfo: Document new feature of .type directive. * NEWS: Mention support for gnu_unique_object symbol type. * common.h (STB_GNU_UNIQUE): Define. * NEWS: Mention the linker's support for symbols with a binding of STB_GNU_UNIQUE. * gas/elf/type.s: Add unique global symbol definition. * gas/elf/type.e: Add expected readelf output for global unique symbol. * elfcpp.h (enum STB): Add STB_GNU_UNIQUE. * readelf.c (get_symbol_binding): For Linux targeted files return UNIQUE for symbols with the STB_GNU_UNIQUE binding. * doc/binutils.texi: Document the meaning of the 'u' symbol binding in the output of nm and objdump --syms. * elf-bfd.h (struct elf_link_hash_entry): Add unique_global field. * elf.c (swap_out_syms): Set binding to STB_GNU_UNIQUE for symbols with the BSF_GNU_UNIQUE flag bit set. * elfcode.h (elf_slurp_symbol_table): Set the BSF_GNU_UNIQUE flag for symbols with STB_GNU_UNIQUE binding. * elflink.c (_bfd_elf_merge_symbol): Set unique_global for symbols with the STB_GNU_UNIQUE binding. (elf_link_add_object_symbols): Set the BSF_GNU_UNIQUE flag for symbols with STB_GNU_UNIQUE binding. Set STB_GNU_UNIQUE for symbols with the unique_global field set. (elf_link_output_extsym): Set unique_global field for symbols with the STB_GNU_UNIQUE binding. * syms.c (struct bfd_symbol): Define BSF_GNU_UNIQUE flag bit. (bfd_print_symbol_vandf): Print a 'u' character for BSF_GNU_UNIQUE symbols. (bfd_decode_symclass): Return a 'u' character for BSF_GNU_UNIQUE symbols. * bfd-in2.h: Regenerate.
Diffstat (limited to 'ld')
-rw-r--r--ld/ChangeLog5
-rw-r--r--ld/NEWS4
2 files changed, 9 insertions, 0 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog
index 87ab48b..10160eb 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,8 @@
+2009-07-23 Ulrich Drepper <drepper@redhat.com>
+
+ * NEWS: Mention the linker's support for symbols with a binding of
+ STB_GNU_UNIQUE.
+
2009-07-22 H.J. Lu <hongjiu.lu@intel.com>
PR ld/10429
diff --git a/ld/NEWS b/ld/NEWS
index 6f05361..821915e 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,4 +1,8 @@
-*- text -*-
+* GNU/Linux targets now support the STB_GNU_UNIQUE symbol binding. This is a
+ GNU extension to the standard set of ELF symbol bindings. The binding will
+ be passed on to the dynamic linker which will make sure that in the entire
+ process there is just one symbol with the given name and type in use.
* PE targets now support a GNU extension to allow the alignment of common
common symbols to be specified. This support uses custom options in