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| author | Dave Korn <dave.korn@artimi.com> | 2009-05-19 16:08:08 +0000 |
|---|---|---|
| committer | Dave Korn <dave.korn@artimi.com> | 2009-05-19 16:08:08 +0000 |
| commit | c1711530e652a14bc0df9b603c73e350b5dfe5ec (patch) | |
| tree | f0e82c9c384277dc508547d786bbc912eac7edf8 /ld/ld.texinfo | |
| parent | fbdebf465713844d23625ae09e0ae4995418328b (diff) | |
| download | gdb-c1711530e652a14bc0df9b603c73e350b5dfe5ec.zip gdb-c1711530e652a14bc0df9b603c73e350b5dfe5ec.tar.gz gdb-c1711530e652a14bc0df9b603c73e350b5dfe5ec.tar.bz2 | |
==> bfd/ChangeLog <==
2009-05-19 Dave Korn <dave.korn.cygwin@gmail.com>
* cofflink.c (process_embedded_commands): Ignore "-aligncomm".
==> gas/ChangeLog <==
2009-05-19 Dave Korn <dave.korn.cygwin@gmail.com>
* NEWS: Mention new feature.
* config/obj-coff.c (obj_coff_common_parse): New function.
(obj_coff_comm): Likewise.
(coff_pseudo_table): Override default ".comm" definition on PE.
* doc/as.texinfo: Document new feature.
==> gas/testsuite/ChangeLog <==
2009-05-19 Dave Korn <dave.korn.cygwin@gmail.com>
* gas/pe/: New directory for PE format-specific tests.
* gas/pe/aligncomm-a.d: New test pattern file.
* gas/pe/aligncomm-a.s: New test source file.
* gas/pe/aligncomm-b.d: New test pattern file.
* gas/pe/aligncomm-b.s: New test source file.
* gas/pe/aligncomm-c.d: New test pattern file.
* gas/pe/aligncomm-c.s: New test source file.
* gas/pe/aligncomm-d.d: New test pattern file.
* gas/pe/aligncomm-d.s: New test source file.
* gas/pe/pe.exp: New test control script.
* lib/gas-defs.exp (is_pecoff_format): New function.
==> ld/ChangeLog <==
2009-05-19 Dave Korn <dave.korn.cygwin@gmail.com>
* NEWS: Mention new feature.
* deffile.h (def_file_aligncomm): Add new struct definition.
(def_file): Add new def_file_aligncomm member.
* deffilep.y (%token): Add new ALIGNCOMM token.
(command): Add production rule for ALIGNCOMM.
(def_file_free): Free any chained def_file_aligncomm structs.
(diropts[]): Add entry for '-aligncomm' .drectve command.
(def_aligncomm): New grammar function.
* ld.texinfo: Document new feature.
* pe-dll.c (process_def_file): Rename from this ...
(process_def_file_and_drectve): ... to this, updating all callers,
and process any aligncomms chained to the def file after scanning
all .drectve sections.
(generate_edata): Updated to match.
(pe_dll_build_sections): Likewise.
==> ld/testsuite/ChangeLog <==
2009-05-19 Dave Korn <dave.korn.cygwin@gmail.com>
* ld-pe/aligncomm-1.c: New test source file.
* ld-pe/aligncomm-2.c: Likewise.
* ld-pe/aligncomm-3.c: Likewise.
* ld-pe/aligncomm-4.c: Likewise.
* ld-pe/aligncomm.d: New test pattern file.
* ld-pe/direct.exp: Deleted, and content moved into ...
* ld-pe/pe-run.exp: ... New common file for all PE run tests.
* ld-pe/vers-script.exp: Deleted, and content merged into ...
* ld-pe/pe-compile.exp: ... New common file for PE tests needing
a compiler, adding aligned common tests.
* ld-pe/pe.exp: Update header comment.
Diffstat (limited to 'ld/ld.texinfo')
| -rw-r--r-- | ld/ld.texinfo | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/ld/ld.texinfo b/ld/ld.texinfo index bdfa948..2121725 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -6994,6 +6994,17 @@ implemented. As a GNU extension, weak symbols that do not specify an alternate symbol are supported. If the symbol is undefined when linking, the symbol uses a default value. + +@cindex aligned common symbols +@item aligned common symbols +As a GNU extension to the PE file format, it is possible to specify the +desired alignment for a common symbol. This information is conveyed from +the assembler or compiler to the linker by means of GNU-specific commands +carried in the object file's @samp{.drectve} section, which are recognized +by @command{ld} and respected when laying out the common symbols. Native +tools will be able to process object files employing this GNU extension, +but will fail to respect the alignment instructions, and may issue noisy +warnings about unknown linker directives. @end table @ifclear GENERIC |