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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
..
aarch64elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
aix.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
alphaelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
arclinux.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
armcoff.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
armelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
astring.sed
avrelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
beos.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
bfin.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
cr16elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
crxelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
elf-generic.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
elf32.em Properly implement STT_COMMON 2016-02-26 05:01:34 -08:00
epiphanyelf_4x4.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
genelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
generic.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
gld960.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
gld960c.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
hppaelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
ia64elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
irix.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
linux.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
lnk960.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
m68hc1xelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
m68kcoff.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
m68kelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
metagelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
mipself.em MIPS/LD: Convert ELF linker emulation option macros to an enum 2016-01-04 23:35:03 +00:00
mmix-elfnmmo.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
mmixelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
mmo.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
msp430.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
nds32elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
needrelax.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
netbsd.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
nios2elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
ostring.sed
pe.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
pep.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
ppc32elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
ppc64elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
README Copyright update for binutils 2016-01-01 23:00:01 +10:30
rxelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
scoreelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
sh64elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
solaris2.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
spu_icache.o_c Regenerate spu overlay and icache manager files 2014-11-04 22:36:13 +10:30
spu_icache.S bfd/ 2009-03-17 12:46:19 +00:00
spu_ovl.o_c Regenerate spu overlay and icache manager files 2014-11-04 22:36:13 +10:30
spu_ovl.S Copyright update for binutils 2016-01-01 23:00:01 +10:30
spuelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
sunos.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
tic6xdsbt.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
ticoff.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
v850elf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
vanilla.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
vms.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
vxworks.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
xtensaelf.em Copyright update for binutils 2016-01-01 23:00:01 +10:30
z80.em Copyright update for binutils 2016-01-01 23:00:01 +10:30

README

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The files in this directory are sourced by genscripts.sh, after
setting some variables to substitute in, to produce
C source files that contain jump tables for each emulation.

Copyright (C) 2012-2016 Free Software Foundation, Inc.

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are permitted in any medium without royalty provided the copyright
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