old-cross-binutils/ld
H.J. Lu 4a114e3e0c Add compressed debug section support to binutils and ld.
bfd/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>
	    Cary Coutant  <ccoutant@google.com>

	* archive.c (bfd_openr_next_archived_file): Copy BFD_COMPRESS
	and BFD_DECOMPRESS.

	* bfd.c (BFD_COMPRESS): New.
	(BFD_DECOMPRESS): Likewise.
	(BFD_FLAGS_SAVED): Likewise.
	(bfd_preserve_save): Replace BFD_IN_MEMORY with BFD_FLAGS_SAVED.

	* compress.c (bfd_uncompress_section_contents): Removed.
	(get_uncompressed_size): New.
	(decompress_contents): Likewise.
	(bfd_compress_section_contents): Likewise.
	(bfd_get_full_section_contents): Likewise.
	(bfd_is_section_compressed): Likewise.
	(bfd_init_section_decompress_status): Likewise.
	(bfd_init_section_compress_status): Likewise.

	* dwarf2.c (dwarf_debug_sections): New.
	(dwarf_debug_section_enum): Likewise.
	(read_section): Remove section_name and compressed_section_name.
	Add dwarf_debug_section_enum.  Try compressed debug section.
	(read_indirect_string): Updated.
	(read_abbrevs): Likewise.
	(decode_line_info): Likewise.
	(read_debug_ranges): Likewise.
	(find_line): Updated.

	* ecoff.c (bfd_debug_section): Add compress_status and
	compressed_size.

	* elf.c (_bfd_elf_make_section_from_shdr): Call
	bfd_is_section_compressed to check if a DWARF debug section is
	compressed.  Call bfd_init_section_compress_status or
	bfd_init_section_decompress_status if needed.

	* elflink.c (elf_link_input_bfd): Replace bfd_get_section_contents
	with bfd_get_full_section_contents.
	* merge.c (_bfd_add_merge_section): Likewise.
	* reloc.c (bfd_generic_get_relocated_section_contents): Likewise.
	* simple.c (bfd_simple_get_relocated_section_contents): Likewise.

	* elfxx-target.h (TARGET_BIG_SYM): Allow BFD_COMPRESS and
	BFD_DECOMPRESS.
	(TARGET_LITTLE_SYM): Likewise.

	* libbfd-in.h (dwarf_debug_section): New.
	(dwarf_debug_sections): Likewise.

	* libbfd.c (_bfd_generic_get_section_contents): Issue an error
	when getting contents on compressed/decompressed section.

	* section.c (COMPRESS_SECTION_NONE): New.
	(COMPRESS_SECTION_DONE): Likewise.
	(DECOMPRESS_SECTION_SIZED): Likewise.
	(BFD_FAKE_SECTION): Add compress_status and compressed_size.
	(bfd_malloc_and_get_section): Replace bfd_get_section_contents
	with bfd_get_full_section_contents.

	* bfd-in2.h: Regenerated.
	* libbfd.h: Likewise.

binutils/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>

	* addr2line.c (process_file): Set BFD_DECOMPRESS.

	* objcopy.c (do_debug_sections): New.
	(OPTION_COMPRESS_DEBUG_SECTIONS): New.
	(OPTION_DECOMPRESS_DEBUG_SECTIONS): Likewise.
	(copy_options): Add OPTION_COMPRESS_DEBUG_SECTIONS and
	OPTION_DECOMPRESS_DEBUG_SECTIONS.
	(copy_usage): Add --compress-debug-sections and
	--decompress-debug-sections.
	(copy_file): Set BFD_COMPRESS or BFD_DECOMPRESS.
	(copy_section): Replace bfd_get_section_contents with
	bfd_get_full_section_contents.
	(copy_main): Handle OPTION_COMPRESS_DEBUG_SECTIONS and
	OPTION_DECOMPRESS_DEBUG_SECTIONS.  Check do_debug_sections to
	rename DWARF debug sections.

	* objdump.c (load_specific_debug_section): Replace
	bfd_get_section_contents with bfd_get_full_section_contents.
	Remove bfd_uncompress_section_contents.
	(dump_section): Replace bfd_get_section_contents with
	bfd_get_full_section_contents.
	(display_file): Set BFD_DECOMPRESS if needed.

	* readelf.c (uncompress_section_contents): Set buffer to NULL
	to indiate decompression failure.
	(load_specific_debug_section): Always call
	uncompress_section_contents.

	* doc/binutils.texi: Document --compress-debug-sections and
	--decompress-debug-sections.

binutils/testsuite/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>

	* binutils-all/compress.exp: New.
	* binutils-all/dw2-1.S: Likewise.
	* binutils-all/dw2-2.S: Likewise.
	* binutils-all/libdw2-compressed.out: Likewise.
	* binutils-all/libdw2.out: Likewise.

gas/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>

	* write.c (compress_debug): Optimize section flags check.

gas/testsuite/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>

	* elf/dwarf2-1.s: Replace .zdebug_abbrev section with
	.debug_abbrev section.
	* elf/dwarf2-2.3: Likewise.

	* elf/dwarf2-1.d: Pass --compress-debug-sections to assembler.
	Updated.
	* elf/dwarf2-2.d: Likewise.

	* gas/i386/i386.exp: Remove xfail on dw2-compress-2 and
	x86-64-dw2-compress-2.

ld/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>

	* ldfile.c (ldfile_try_open_bfd): Set BFD_DECOMPRESS after
	bfd_openr returns.
	* emultempl/elf32.em (gld${EMULATION_NAME}_try_needed): Likewise.

	* scripttempl/elf.sc: Include compressed DWARF debug sections.

ld/testsuite/

2010-10-29  H.J. Lu  <hongjiu.lu@intel.com>

	* ld-elf/compress.exp: New.
	* ld-elf/compress1.s: Likewise.
	* ld-elf/compress1a.d: Likewise.
	* ld-elf/compress1b.d: Likewise.
	* ld-elf/compress1c.d: Likewise.
2010-10-29 12:10:39 +00:00
..
emulparams ld: 2010-10-22 12:08:32 +00:00
emultempl Add compressed debug section support to binutils and ld. 2010-10-29 12:10:39 +00:00
po remove maxq-coff port 2010-06-29 04:17:34 +00:00
scripttempl Add compressed debug section support to binutils and ld. 2010-10-29 12:10:39 +00:00
testsuite Add compressed debug section support to binutils and ld. 2010-10-29 12:10:39 +00:00
aclocal.m4 bfd/ 2010-05-07 12:28:50 +00:00
ChangeLog Add compressed debug section support to binutils and ld. 2010-10-29 12:10:39 +00:00
ChangeLog-0001
ChangeLog-0203
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006
ChangeLog-2007
ChangeLog-2008
ChangeLog-2009 Move 2009 binutils ChangeLog to ChangeLog-2009. 2010-01-01 18:06:10 +00:00
ChangeLog-9197
ChangeLog-9899
config.in Provide win32-based dlapi replacements on windows platforms without dlfcn.h. 2010-10-15 16:21:41 +00:00
configure Provide win32-based dlapi replacements on windows platforms without dlfcn.h. 2010-10-15 16:21:41 +00:00
configure.host PR ld/11426 2010-03-25 22:49:44 +00:00
configure.in Provide win32-based dlapi replacements on windows platforms without dlfcn.h. 2010-10-15 16:21:41 +00:00
configure.tgt Select 32-bit pei for 64-bit pei configurations. 2010-09-02 22:54:44 +00:00
deffile.h 2009-10-23 Kai Tietz <kai.tietz@onevision.com> 2009-10-23 11:40:17 +00:00
deffilep.y 2010-05-25 Kai Tietz <kai.tietz@onevision.com> 2010-05-25 10:05:16 +00:00
dep-in.sed
elf-hints-local.h
fdl.texi etc/ChangeLog 2010-06-08 10:30:56 +00:00
gen-doc.texi
genscrba.sh
genscripts.sh update copyright dates 2009-09-02 07:25:43 +00:00
h8-doc.texi
ld.h PR ld/10956 2009-11-26 13:45:25 +00:00
ld.texinfo Add directory section for info document. 2010-10-28 11:40:26 +00:00
ldcref.c PR ld/11367 2010-03-10 22:44:01 +00:00
ldctor.c * po/bfd.pot: Updated by the Translation project. 2009-09-11 15:27:38 +00:00
ldctor.h update copyright dates 2009-09-02 07:25:43 +00:00
ldemul.c * ldlang.h (ldlang_add_undef): Add cmdline param. 2010-10-28 06:45:33 +00:00
ldemul.h update copyright dates 2009-09-02 07:25:43 +00:00
ldexp.c PR ld/12066 2010-10-01 08:15:42 +00:00
ldexp.h * po/bfd.pot: Updated by the Translation project. 2009-09-11 15:27:38 +00:00
ldfile.c Add compressed debug section support to binutils and ld. 2010-10-29 12:10:39 +00:00
ldfile.h update copyright dates 2009-09-02 07:25:43 +00:00
ldgram.y * ldlang.h (ldlang_add_undef): Add cmdline param. 2010-10-28 06:45:33 +00:00
ldint.texinfo Add directory section for info document. 2010-10-28 11:40:26 +00:00
ldlang.c * ldlang.h (ldlang_add_undef): Add cmdline param. 2010-10-28 06:45:33 +00:00
ldlang.h * ldlang.h (ldlang_add_undef): Add cmdline param. 2010-10-28 06:45:33 +00:00
ldlex-wrapper.c ld/ 2010-02-10 19:48:16 +00:00
ldlex.h update copyright dates 2009-09-02 07:25:43 +00:00
ldlex.l * ldlex.l (WILDCHAR): Add the caret and exclamation point 2010-08-31 16:08:24 +00:00
ldmain.c Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
ldmain.h * lexsup.c: Rename --add-needed to --copy-dt-needed-entries. 2009-11-05 15:35:50 +00:00
ldmisc.c Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
ldmisc.h Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
ldver.c Change to "Copyright 2010". 2010-01-08 19:40:08 +00:00
ldver.h update copyright dates 2009-09-02 07:25:43 +00:00
ldwrite.c * ldwrite.c (build_link_order <lang_data_statement_enum>): Don't 2010-10-21 23:28:06 +00:00
ldwrite.h update copyright dates 2009-09-02 07:25:43 +00:00
lexsup.c * ldlang.h (ldlang_add_undef): Add cmdline param. 2010-10-28 06:45:33 +00:00
MAINTAINERS
Makefile.am Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
Makefile.in Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
mri.c * po/bfd.pot: Updated by the Translation project. 2009-09-11 15:27:38 +00:00
mri.h update copyright dates 2009-09-02 07:25:43 +00:00
NEWS binutils/ 2010-09-09 10:46:33 +00:00
pe-dll.c fix set but unused variable warnings 2010-06-27 04:07:55 +00:00
pe-dll.h 2010-04-05 Kai Tietz <kai.tietz@onevision.com> 2010-04-05 09:04:09 +00:00
pep-dll.c 2010-04-05 Kai Tietz <kai.tietz@onevision.com> 2010-04-05 09:04:09 +00:00
pep-dll.h 2010-04-05 Kai Tietz <kai.tietz@onevision.com> 2010-04-05 09:04:09 +00:00
plugin.c * plugin.c (plugin_get_ir_dummy_bfd): Set bfd_use_reserved_id. 2010-10-25 06:22:50 +00:00
plugin.h Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
README
stamp-h.in
sysdep.h Provide win32-based dlapi replacements on windows platforms without dlfcn.h. 2010-10-15 16:21:41 +00:00
testplug.c Applied patch series for LD plugin interface (six parts). 2010-10-14 01:31:33 +00:00
TODO

		README for LD

This is the GNU linker.  It is distributed with other "binary
utilities" which should be in ../binutils.  See ../binutils/README for
more general notes, including where to send bug reports.

There are many features of the linker:

* The linker uses a Binary File Descriptor library (../bfd)
  that it uses to read and write object files.  This helps
  insulate the linker itself from the format of object files.

* The linker supports a number of different object file
  formats.  It can even handle multiple formats at once:
  Read two input formats and write a third.

* The linker can be configured for cross-linking.

* The linker supports a control language.

* There is a user manual (ld.texinfo), as well as the
  beginnings of an internals manual (ldint.texinfo).

Installation
============

See ../binutils/README.

If you want to make a cross-linker, you may want to specify
a different search path of -lfoo libraries than the default.
You can do this by setting the LIB_PATH variable in ./Makefile
or using the --with-lib-path configure switch.

To build just the linker, make the target all-ld from the top level
directory (one directory above this one).

Porting to a new target
=======================

See the ldint.texinfo manual.

Reporting bugs etc
===========================

See ../binutils/README.

Known problems
==============

The Solaris linker normally exports all dynamic symbols from an
executable.  The GNU linker does not do this by default.  This is
because the GNU linker tries to present the same interface for all
similar targets (in this case, all native ELF targets).  This does not
matter for normal programs, but it can make a difference for programs
which try to dlopen an executable, such as PERL or Tcl.  You can make
the GNU linker export all dynamic symbols with the -E or
--export-dynamic command line option.

HP/UX 9.01 has a shell bug that causes the linker scripts to be
generated incorrectly.  The symptom of this appears to be "fatal error
- scanner input buffer overflow" error messages.  There are various
workarounds to this:
  * Build and install bash, and build with "make SHELL=bash".
  * Update to a version of HP/UX with a working shell (e.g., 9.05).
  * Replace "(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc)" in
    genscripts.sh with "sh ${srcdir}..." (no parens) and make sure the
    emulparams script used exports any shell variables it sets.