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H.J. Lu b8871f357f Properly implement STT_COMMON 
The BFD configure option, --enable-elf-stt-common, can't be to used to
verify STT_COMMON implementation with the normal binutils build.  Instead,
this patch removes it from BFD.  It adds --elf-stt-common=[no|yes] to ELF
assembler/objcopy and adds -z common/-z nocommon to ld.

A configure option, --enable-elf-stt-common, is added to gas to specify
whether ELF assembler should generate common symbols with the STT_COMMON
type by default.

Since BSF_KEEP_G is never used, it is renamed to BSF_ELF_COMMON for ELF
common symbols.

bfd/

	PR ld/19645
	* bfd.c (bfd): Change flags to 20 bits.
	(BFD_CONVERT_ELF_COMMON): New.
	(BFD_USE_ELF_STT_COMMON): Likewise.
	(BFD_FLAGS_SAVED): Add BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.
	(BFD_FLAGS_FOR_BFD_USE_MASK): Likewise.
	* configure.ac: Remove --enable-elf-stt-common.
	* elf.c (swap_out_syms): Choose STT_COMMON or STT_OBJECT for
	common symbol depending on BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.
	* elfcode.h (elf_slurp_symbol_table): Set BSF_ELF_COMMON for
	STT_COMMON.
	* elflink.c (bfd_elf_link_mark_dynamic_symbol): Also check
	STT_COMMON.
	(elf_link_convert_common_type): New function.
	(elf_link_output_extsym): Choose STT_COMMON or STT_OBJECT for
	common symbol depending on BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.  Set sym.st_info after sym.st_shndx.
	* elfxx-target.h (TARGET_BIG_SYM): Add BFD_CONVERT_ELF_COMMON
	and BFD_USE_ELF_STT_COMMON to object_flags.
	(TARGET_LITTLE_SYM): Likewise.
	* syms.c (BSF_KEEP_G): Renamed to ...
	(BSF_ELF_COMMON): This.
	* bfd-in2.h: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.

binutils/

	PR ld/19645
	* NEWS: Mention --elf-stt-common= for objcopy.
	* doc/binutils.texi: Document --elf-stt-common= for objcopy.
	* objcopy.c (do_elf_stt_common): New.
	(command_line_switch): Add OPTION_ELF_STT_COMMON.
	(copy_options): Add --elf-stt-common=.
	(copy_usage): Add --elf-stt-common=.
	(copy_object): Also check do_elf_stt_common for ELF targets.
	(copy_file): Handle do_elf_stt_common.
	(copy_main): Handle OPTION_ELF_STT_COMMON.
	* readelf.c (apply_relocations): Support STT_COMMON.
	* testsuite/binutils-all/common-1.s: New file.
	* testsuite/binutils-all/common-1a.d: Likewise.
	* testsuite/binutils-all/common-1b.d: Likewise.
	* testsuite/binutils-all/common-1c.d: Likewise.
	* testsuite/binutils-all/common-1d.d: Likewise.
	* testsuite/binutils-all/common-1e.d: Likewise.
	* testsuite/binutils-all/common-1f.d: Likewise.
	* testsuite/binutils-all/common-2.s: Likewise.
	* testsuite/binutils-all/common-2a.d: Likewise.
	* testsuite/binutils-all/common-2b.d: Likewise.
	* testsuite/binutils-all/common-2c.d: Likewise.
	* testsuite/binutils-all/common-2d.d: Likewise.
	* testsuite/binutils-all/common-2e.d: Likewise.
	* testsuite/binutils-all/common-2f.d: Likewise.
	* testsuite/binutils-all/objcopy.exp
	(objcopy_test_elf_common_symbols): New proc.
	Run objcopy_test_elf_common_symbols for ELF targets

gas/

	PR ld/19645
	* NEWS: Mention --enable-elf-stt-common and --elf-stt-common=
	for ELF assemblers.
	* as.c (flag_use_elf_stt_common): New.
	(show_usage): Add --elf-stt-common=.
	(option_values): Add OPTION_ELF_STT_COMMON.
	(std_longopts): Add --elf-stt-common=.
	(parse_args): Handle --elf-stt-common=.
	* as.h (flag_use_elf_stt_common): New.
	* config.in: Regenerated.
	* configure: Likewise.
	* configure.ac: Add --enable-elf-stt-common and define
	DEFAULT_GENERATE_ELF_STT_COMMON.
	* gas/write.c (write_object_file): Set BFD_CONVERT_ELF_COMMON
	and BFD_USE_ELF_STT_COMMON if flag_use_elf_stt_common is set.
	* doc/as.texinfo: Document --elf-stt-common=.
	* testsuite/gas/elf/common3.s: New file.
	* testsuite/gas/elf/common3a.d: Likewise.
	* testsuite/gas/elf/common3b.d: Likewise.
	* testsuite/gas/elf/common4.s: Likewise.
	* testsuite/gas/elf/common4a.d: Likewise.
	* testsuite/gas/elf/common4b.d: Likewise.
	* testsuite/gas/i386/dw2-compress-3b.d: Likewise.
	* testsuite/gas/i386/dw2-compressed-3b.d: Likewise.
	* testsuite/gas/elf/elf.exp: Run common3a, common3b, common4a
	and common4b.
	* testsuite/gas/i386/dw2-compress-3.d: Renamed to ...
	* testsuite/gas/i386/dw2-compress-3a.d: This.  Pass
	--elf-stt-common=no to as.
	* testsuite/gas/i386/dw2-compressed-3.d: Renamed to ...
	* testsuite/gas/i386/dw2-compressed-3a.d: This.  Pass
	--elf-stt-common=no to as.
	* testsuite/gas/i386/i386.exp: Run dw2-compress-3a,
	dw2-compress-3b, dw2-compressed-3a and dw2-compressed-3b instead
	of dw2-compress-3 and dw2-compressed-3.

include/

	PR ld/19645
	* bfdlink.h (bfd_link_elf_stt_common): New enum.
	(bfd_link_info): Add elf_stt_common.

ld/

	PR ld/19645
	* NEWS: Mention -z common/-z nocommon for ELF targets.
	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Handle
	-z common and -z nocommon.
	* ld.texinfo: Document -z common/-z nocommon.
	* lexsup.c (elf_shlib_list_options): Add -z common/-z nocommon.
	* testsuite/ld-elf/tls_common.exp: Test --elf-stt-common=no and
	--elf-stt-common=yes with assembler.
	* testsuite/ld-elfcomm/common-1.s: New file.
	* testsuite/ld-elfcomm/common-1a.d: Likewise.
	* testsuite/ld-elfcomm/common-1b.d: Likewise.
	* testsuite/ld-elfcomm/common-1c.d: Likewise.
	* testsuite/ld-elfcomm/common-1d.d: Likewise.
	* testsuite/ld-elfcomm/common-1e.d: Likewise.
	* testsuite/ld-elfcomm/common-1f.d: Likewise.
	* testsuite/ld-elfcomm/common-2.s: Likewise.
	* testsuite/ld-elfcomm/common-2a.d: Likewise.
	* testsuite/ld-elfcomm/common-2b.d: Likewise.
	* testsuite/ld-elfcomm/common-2c.d: Likewise.
	* testsuite/ld-elfcomm/common-2d.d: Likewise.
	* testsuite/ld-elfcomm/common-2e.d: Likewise.
	* testsuite/ld-elfcomm/common-2f.d: Likewise.
	* testsuite/ld-elfcomm/common-3a.rd: Likewise.
	* testsuite/ld-elfcomm/common-3b.rd: Likewise.
	* testsuite/ld-i386/pr19645.d: Likewise.
	* testsuite/ld-i386/pr19645.s: Likewise.
	* testsuite/ld-x86-64/largecomm-1.s: Likewise.
	* testsuite/ld-x86-64/largecomm-1a.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1b.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1c.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1d.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1e.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1f.d: Likewise.
	* testsuite/ld-x86-64/pr19645.d: Likewise.
	* testsuite/ld-x86-64/pr19645.s: Likewise.
	* testsuite/ld-elfcomm/elfcomm.exp: Test --elf-stt-common=yes
	with assembler.
	(assembler_generates_commons): Removed.
	Run -z common/-z nocommon tests.  Run *.d tests.
	* testsuite/ld-i386/i386.exp: Run pr19645.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-x86-64/dwarfreloc.exp: Test --elf-stt-common with
	assembler.  Test STT_COMMON with readelf.
2016-02-26 05:01:34 -08:00
..
config Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-aarch64 Revert "ABS32" 2016-02-24 15:01:07 +00:00
ld-alpha Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-arm Remove support for creating ARM NOREAD sections. 2016-02-04 11:57:57 +00:00
ld-auto-import Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-avr Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-bootstrap Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-cdtest Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-checks Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-cris Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-crx Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-cygwin Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-d10v Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-discard Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-elf Properly implement STT_COMMON 2016-02-26 05:01:34 -08:00
ld-elfcomm Properly implement STT_COMMON 2016-02-26 05:01:34 -08:00
ld-elfvers Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-elfvsb Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-elfweak Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-fastcall Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-frv Make linker assigned symbol dynamic only for shared object 2016-02-23 05:19:03 -08:00
ld-gc Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-h8300 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-i386 Properly implement STT_COMMON 2016-02-26 05:01:34 -08:00
ld-ia64 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-ifunc Update IFUNC tests for x32 2016-02-17 13:05:06 -08:00
ld-libs Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-linkonce Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-m68hc11 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-m68k Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-mep Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-metag Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-mips-elf Make linker assigned symbol dynamic only for shared object 2016-02-23 05:19:03 -08:00
ld-misc Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-mmix Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-mn10300 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-nds32 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-nios2 Add Nios II arch flags and compatibility tests 2015-07-01 15:55:28 -07:00
ld-pe Fix linker testsuite failures for arm-pe targets. 2016-01-20 15:41:06 +00:00
ld-pie Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-plugin Skip linker plugin tests if the linker has not been configured to support plugins. 2016-01-18 11:23:44 +00:00
ld-powerpc Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-s390 Enhance GAS's .section directive so that it can take numeric values for the flags and type fields. (ELF only) 2016-02-15 11:11:46 +00:00
ld-scripts Fix linker testsuite failures for arm-pe targets. 2016-01-20 15:41:06 +00:00
ld-selective Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-sh Enhance GAS's .section directive so that it can take numeric values for the flags and type fields. (ELF only) 2016-02-15 11:11:46 +00:00
ld-shared Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-size Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-sparc Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-spu Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-srec Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-tic6x Enhance GAS's .section directive so that it can take numeric values for the flags and type fields. (ELF only) 2016-02-15 11:11:46 +00:00
ld-tilegx Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-tilepro Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-undefined Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-unique Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-v850 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-vax-elf Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-versados Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-visium Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-vxworks Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-x86-64 Properly implement STT_COMMON 2016-02-26 05:01:34 -08:00
ld-xc16x Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-xstormy16 Copyright update for binutils 2016-01-01 23:00:01 +10:30
ld-xtensa Enhance GAS's .section directive so that it can take numeric values for the flags and type fields. (ELF only) 2016-02-15 11:11:46 +00:00
lib m68hc11/12 and xgate config.sub weirdness 2016-01-17 12:13:43 +10:30
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ChangeLog-2009
ChangeLog-2010
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ChangeLog-2012
ChangeLog-2013
ChangeLog-2014 ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ChangeLog-2015 binutils ChangeLog rotation 2016-01-01 22:59:17 +10:30
ChangeLog-9303