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| author | Nick Clifton <nickc@redhat.com> | 2009-07-23 13:00:30 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2009-07-23 13:00:30 +0000 |
| commit | 3e7a7d11f1106a451c26b49fcb8fafb5059fd684 (patch) | |
| tree | b3d0c290c25b650e408ec3f60e770f56bb1f5be6 /gas/doc | |
| parent | 6ec8e7022b6b6a69ee682d1797e8bfec473aae11 (diff) | |
| download | gdb-3e7a7d11f1106a451c26b49fcb8fafb5059fd684.zip gdb-3e7a7d11f1106a451c26b49fcb8fafb5059fd684.tar.gz gdb-3e7a7d11f1106a451c26b49fcb8fafb5059fd684.tar.bz2 | |
* 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 'gas/doc')
| -rw-r--r-- | gas/doc/as.texinfo | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index d1240bf..3af86f8 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -6360,6 +6360,11 @@ Mark the symbol as being a common data object. @itemx notype Does not mark the symbol in any way. It is supported just for completeness. +@item gnu_unique_object +Marks the symbol as being a globally unique data object. The dynamic linker +will make sure that in the entire process there is just one symbol with this +name and type in use. (This is only supported on Linux targeted assemblers). + @end table Note: Some targets support extra types in addition to those listed above. |