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4713 commits

Author SHA1 Message Date
H.J. Lu
be59ad3d96 Don't hardcode offset of .shstrtab section
There is no requirement on placement of section name section, .shstrtab.
This patch removes hardcoded offsets of .shstrtab sections.

binutils/testsuite/

	* binutils-all/i386/compressed-1b.d: Don't hardcode offset of
	.shstrtab section.
	* binutils-all/i386/compressed-1c.d: Likewise.
	* binutils-all/readelf.s-64: Likewise.
	* binutils-all/x86-64/compressed-1b.d: Likewise.
	* binutils-all/x86-64/compressed-1c.d: Likewise.

gas/testsuite/

	* gas/i386/ilp32/x86-64-unwind.d: Don't hardcode offset of
	.shstrtab section.
	* gas/i386/x86-64-unwind.d: Likewise.
	* gas/ia64/alias-ilp32.d: Likewise.
	* gas/ia64/alias.d: Likewise.
	* gas/ia64/group-1.d: Likewise.
	* gas/ia64/group-2.d: Likewise.
	* gas/ia64/secname-ilp32.d: Likewise.
	* gas/ia64/secname.d: Likewise.
	* gas/ia64/unwind-ilp32.d: Likewise.
	* gas/ia64/unwind.d: Likewise.
	* gas/mmix/bspec-1.d: Likewise.
	* gas/mmix/byte-1.d: Likewise.
	* gas/mmix/loc-1.d: Likewise.
	* gas/mmix/loc-2.d: Likewise.
	* gas/mmix/loc-3.d: Likewise.
	* gas/mmix/loc-4.d: Likewise.
	* gas/mmix/loc-5.d: Likewise.
	* gas/tic6x/scomm-directive-4.d: Likewise.

ld/testsuite/

	* ld-mmix/bspec1.d: Don't hardcode offset of .shstrtab section.
	* ld-mmix/bspec2.d: Likewise.
	* ld-mmix/local1.d: Likewise.
	* ld-mmix/local3.d: Likewise.
	* ld-mmix/local5.d: Likewise.
	* ld-mmix/local7.d: Likewise.
	* ld-mmix/undef-3.d: Likewise.
	* ld-sh/sh64/crangerel1.rd: Likewise.
	* ld-sh/sh64/crangerel2.rd: Likewise.
	* ld-tic6x/common.d: Likewise.
	* ld-tic6x/shlib-1.rd: Likewise.
	* ld-tic6x/shlib-1b.rd: Likewise.
	* ld-tic6x/shlib-1r.rd: Likewise.
	* ld-tic6x/shlib-1rb.rd: Likewise.
	* ld-tic6x/shlib-app-1.rd: Likewise.
	* ld-tic6x/shlib-app-1b.rd: Likewise.
	* ld-tic6x/shlib-app-1r.rd: Likewise.
	* ld-tic6x/shlib-app-1rb.rd: Likewise.
	* ld-tic6x/shlib-noindex.rd: Likewise.
	* ld-tic6x/static-app-1.rd: Likewise.
	* ld-tic6x/static-app-1b.rd: Likewise.
	* ld-tic6x/static-app-1r.rd: Likewise.
	* ld-tic6x/static-app-1rb.rd: Likewise.
	* ld-x86-64/ilp32-4.d: Likewise.
	* ld-x86-64/split-by-file-nacl.rd: Likewise.
	* ld-x86-64/split-by-file.rd: Likewise.
2015-04-20 09:55:47 -07:00
H.J. Lu
ea556d2590 Mention --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]
binutils/

	* NEWS: Mention
	--compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi].

gas/

	* NEWS: Mention
	--compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi].

ld/

	* NEWS: Mention
	--compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi].
2015-04-15 05:26:41 -07:00
H.J. Lu
0ce398f106 Add --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]
This patch adds --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]
to ld for ELF targets to support generating compressed DWARF debug
sections.  We always generate .zdebug_* section since section names have
been finalized and they can't be changed easily when compression is
being performed.

bfd/

	* bfd-in.h (compressed_debug_section_type): New.
	* compress.c (bfd_compress_section_contents): Add an argument
	for linker write compression and always generate .zdebug_*
	section when linking.
	(bfd_init_section_compress_status): Pass FALSE to
	bfd_compress_section_contents.
	(bfd_compress_section): New function.
	* elf.c (elf_fake_sections): For linking, set SEC_ELF_COMPRESS
	on DWARF debug sections if COMPRESS_DEBUG is set and rename
	section if COMPRESS_DEBUG_GABI_ZLIB isn't set.
	(assign_file_positions_for_non_load_sections): Set sh_offset
	to -1 if SEC_ELF_COMPRESS is set.
	(assign_file_positions_except_relocs): Likwise.
	(_bfd_elf_assign_file_positions_for_relocs): Renamed to ...
	(_bfd_elf_assign_file_positions_for_non_load): This.  Change
	return time to bfd_boolean.  Compress the section if
	SEC_ELF_COMPRESS is set.
	(_bfd_elf_write_object_contents): Updated.
	(_bfd_elf_set_section_contents): Write section contents to
	the buffer if SEC_ELF_COMPRESS is set.
	* merge.c: Include "elf-bfd.h".
	(sec_merge_emit): Add arguments for contents and offset.  Write
	to contents with offset if contents isn't NULL.
	(_bfd_write_merged_section): Write section contents to the
	buffer if SEC_ELF_COMPRESS is set.  Pass contents and
	output_offset to sec_merge_emit.
	* elflink.c (bfd_elf_final_link): Allocate the buffer for
	output section contents if SEC_ELF_COMPRESS is set.
	* section.c (SEC_ELF_COMPRESS): New.
	* bfd-in2.h: Regenerated.

gas/

	* as.h (compressed_debug_section_type): Removed.

include/

	* bfdlink.h (bfd_link_info): Add compress_debug.

ld/

	* ld.texinfo: Document --compress-debug-sections=.
	* ldmain.c (main): Set BFD_COMPRESS on output_bfd if
	COMPRESS_DEBUG is set.  Set BFD_COMPRESS_GABI on output_bfd
	for COMPRESS_DEBUG_GABI_ZLIB.
	* lexsup.c (elf_static_list_options): Add
	--compress-debug-sections=.
	* emultempl/elf32.em (OPTION_COMPRESS_DEBUG): New.
	(xtra_long): Add "compress-debug-sections".
	(gld${EMULATION_NAME}_handle_option): Handle
	OPTION_COMPRESS_DEBUG.

ld/testsuite/

	* ld-elf/compress.exp (build_tests): Add tests for
	--compress-debug-sections=.
	(run_tests): Likewise.
	Add additonal tests for --compress-debug-sections=.
	* ld-elf/gabiend.rt: New file.
	* ld-elf/gabinormal.rt: Likewise.
	* ld-elf/gnubegin.rS: Likewise.
	* ld-elf/gnunormal.rS: Likewise.
	* ld-elf/zlibbegin.rS: Likewise.
	* ld-elf/zlibnormal.rS: Likewise.
2015-04-14 22:01:38 -07:00
Alan Modra
ecd272101d xfail pr18223 test for tic6x
Fails due to
warning: generating a shared library containing non-PIC/PID code

	* ld-gc/pr18223.d: xfail tic6x.
2015-04-15 12:01:33 +09:30
H.J. Lu
889c2a6796 Add -z noextern-protected-data to ld for ELF/x86
Address of protected data defined in the shared library may be external,
i.e., due to copy relocation.  By default, linker backend checks if
relocations against protected data symbols are valid for building shared
library and issues an error if relocation isn't allowed.  The new option
override linker backend default.  When -z noextern-protected-data is used,
updates on protected data symbols by another module won't be visibile
to the resulting shared library.  This option is specific to ELF/i386
and ELF/x86-64.

bfd/

	PR ld/pr17709
	* elflink.c (_bfd_elf_adjust_dynamic_copy): Check
	info->extern_protected_data when warning copy relocs against
	protected symbols.
	(_bfd_elf_symbol_refs_local_p): Check info->extern_protected_data
	when checking protected non-function symbols.

include/

	PR ld/pr17709
	* bfdlink.h (bfd_link_info): Add extern_protected_data.

ld/

	PR ld/pr17709
	* ld.texinfo: Document "-z noextern-protected-data".
	* ldmain.c (main): Initialize link_info.extern_protected_data
	to -1.
	* lexsup.c (elf_shlib_list_options): Add
	"-z [no]extern-protected-data".
	* emulparams/elf32_x86_64.sh: Source extern_protected_data.sh.
	* emulparams/elf_i386.sh: Likewise.
	* emulparams/elf_i386_be.sh: Likewise.
	* emulparams/elf_i386_chaos.sh: Likewise.
	* emulparams/elf_i386_ldso.sh: Likewise.
	* emulparams/elf_i386_vxworks.sh: Likewise.
	* emulparams/elf_k1om.sh: Likewise.
	* emulparams/elf_l1om.sh: Likewise.
	* emulparams/elf_x86_64.sh: Source extern_protected_data.sh.
	(PARSE_AND_LIST_OPTIONS): Renamed to ...
	(PARSE_AND_LIST_OPTIONS_BNDPLT): This.
	(PARSE_AND_LIST_ARGS_CASE_Z): Renamed to ...
	(PARSE_AND_LIST_ARGS_CASE_Z_BNDPLT): This.
	(PARSE_AND_LIST_OPTIONS): Append $PARSE_AND_LIST_OPTIONS_BNDPLT.
	(PARSE_AND_LIST_ARGS_CASE_Z): Append
	$PARSE_AND_LIST_ARGS_CASE_Z_BNDPLT.
	* emulparams/extern_protected_data.sh: New file.

ld/testsuite/

	PR ld/pr17709
	* ld-i386/i386.exp: Run protected6b.
	* ld-i386/protected6b.d: New file.
	* ld-x86-64/protected6b.d: Likewise.
	* ld-x86-64/x86-64.exp:  Run protected6b.
2015-04-14 04:13:11 -07:00
H.J. Lu
fd5a150943 Remove an extra ';'
* plugin.c (plugin_load_plugins): Removed an extra ';'.
2015-04-11 12:07:20 -07:00
H.J. Lu
e3c0e32792 Replace SYMBOLIC_BIND with SYMBOL_REFERENCES_LOCAL
When checking R_386_GOTOFF/R_X86_64_GOTOFF64 for building shared library,
we should check SYMBOL_REFERENCES_LOCAL instead of SYMBOLIC_BIND to cover
more cases.

bfd/

	* elf32-i386.c (elf_i386_relocate_section): Replace SYMBOLIC_BIND
	with SYMBOL_REFERENCES_LOCAL when checking R_386_GOTOFF against
	protected data symbol when building shared library.
	* elf64-x86-64.c (elf_x86_64_relocate_section): Check
	R_X86_64_GOTOFF64 against undefined symbol and replace
	SYMBOLIC_BIND with SYMBOL_REFERENCES_LOCAL when checking
	R_X86_64_GOTOFF64 against protected data symbol when building
	shared library.

ld/testsuite/

	* ld-i386/i386.exp: Run protected6a.
	* ld-i386/protected6.d: Renamed to ...
	* ld-i386/protected6a.d: This.
	* ld-x86-64/hidden4.d: New file.
	* ld-x86-64/hidden4.s: Likewise.
	* ld-x86-64/hidden5.d: Likewise.
	* ld-x86-64/hidden5.s: Likewise.
	* ld-x86-64/protected6.d: Renamed to ...
	* ld-x86-64/protected6a.d: This.
	* ld-x86-64/x86-64.exp: Run hidden4, hidden5, protected6a,
	protected7a and protected7b.
2015-04-11 07:56:48 -07:00
H.J. Lu
3d9499950a Check GOTOFF reloc against protected data on x86
R_386_GOTOFF/R_X86_64_GOTOFF64 relocation shouldn't be used against
protected data symbol on x86 since with copy relocation, address of
protected data defined in the shared library may be external.

This patch will break building shared libraries with protected data
symbols using GCCs older than GCC 5 without the bug fix for

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

GCC backport request should be made in the GCC bug report above.

bfd/

	PR ld/pr17709
	* elf32-i386.c (elf_i386_relocate_section): Also check R_386_GOTOFF
	against protected data symbol when building shared library.
	* elf64-x86-64.c (elf_x86_64_relocate_section): Also check
	R_X86_64_GOTOFF64 against protected data symbol when building
	shared library.

ld/testsuite/

	PR ld/pr17709
	* ld-i386/protected6.d: New file.
	* ld-i386/protected6.s: Likewise.
	* ld-x86-64/protected6.d: Likewise.
	* ld-x86-64/protected6.s: Likewise.
	* ld-x86-64/protected7.d: Likewise.
	* ld-x86-64/protected7.s: Likewise.
	* ld-x86-64/protected7a.d: Likewise.
	* ld-x86-64/protected7b.d: Likewise.
2015-04-10 14:02:23 -07:00
H.J. Lu
f74839702e Add extern_protected_data and set it for x86
Re-apply: commit ca3fe95e46

With copy relocation, address of protected data defined in the shared
library may be external.  This patch adds extern_protected_data and
changes _bfd_elf_symbol_refs_local_p to return false for protected data
if extern_protected_data is true.

This patch will break building shared libraries with protected data
symbols using GCCs older than GCC 5 without the bug fix for

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

GCC backport request should be made in the GCC bug report above.

To get correct run-time behavior on Linux, glibc 2.22 or above are
required, which have the bug fix for

https://sourceware.org/bugzilla/show_bug.cgi?id=17711

Backports for glibc 2.21, 2.20, 2.19 and 2.18 are on hjl/pr17711/2.21,
hjl/pr17711/2.20, hjl/pr17711/2.19 and hjl/pr17711/2.18 branches,
respectively, at

https://sourceware.org/git/?p=glibc.git;a=summary

bfd/

	PR ld/pr15228
	PR ld/pr17709
	* elf-bfd.h (elf_backend_data): Add extern_protected_data.
	* elf32-i386.c (elf_backend_extern_protected_data): New.
	Defined to 1.
	* elf64-x86-64.c (elf_backend_extern_protected_data): Likewise.
	* elflink.c (_bfd_elf_adjust_dynamic_copy): Don't error on
	copy relocs against protected symbols if extern_protected_data
	is true.
	(_bfd_elf_symbol_refs_local_p): Don't return true on protected
	non-function symbols if extern_protected_data is true.
	* elfxx-target.h (elf_backend_extern_protected_data): New.
	Default to 0.
	(elfNN_bed): Initialize extern_protected_data with
	elf_backend_extern_protected_data.

ld/testsuite/

	PR ld/pr15228
	PR ld/pr17709
	* ld-i386/i386.exp (i386tests): Add a test for PR ld/17709.
	* ld-i386/pr17709-nacl.rd: New file.
	* ld-i386/pr17709.rd: Likewise.
	* ld-i386/pr17709a.s: Likewise.
	* ld-i386/pr17709b.s: Likewise.
	* ld-i386/protected3.d: Updated.
	* ld-i386/protected3.s: Likewise.
	* ld-x86-64/pr17709-nacl.rd: New file.
	* ld-x86-64/pr17709.rd: Likewise.
	* ld-x86-64/pr17709a.s: Likewise.
	* ld-x86-64/pr17709b.s: Likewise.
	* ld-x86-64/protected3.d: Updated.
	* ld-x86-64/protected3.s: Likewise.
	* ld-x86-64/x86-64.exp (x86_64tests): Add a test for PR ld/17709.
2015-04-10 11:06:34 -07:00
H.J. Lu
11e6e4c72c Add a testcase for PR ld/18223
PR ld/18223
	* ld-gc/gc.exp: Run pr18223.
	* ld-gc/pr18223.d: New file.
	* ld-gc/pr18223.s: Likewise.
2015-04-10 04:15:53 -07:00
Alan Modra
8d2ea2a80a Revert "Add extern_protected_data and set it for x86"
This reverts commit ca3fe95e46.
2015-04-10 19:16:47 +09:30
Alan Modra
8c3fff59dc Correct setting of elf_list_options
* configure.ac: Set elf_list_options etc. in proper case.
	* configure: Regenerate.
2015-04-10 18:22:50 +09:30
Nick Clifton
080bb7bbe9 Add documentation about the interation of the ARM assembler's -EB option and the linker's --be8 option.
PR binutils/18198
	* ld.texinfo (--be8): Add a note about the interaction of this
	option with the assembler's -EB option.

	* doc/c-arm.texi (ARM Options): Add a note about the interaction of
	the -EB option with the linker's --be8 option.
2015-04-10 08:26:07 +01:00
Alan Modra
6166ed9330 Mark _init and _fini for --gc-sections
gold marks _init and _fini via symbol, ld marks them via section
(default scripts set .init and .fini section KEEP).  This makes it
possible for people to write their own _init and not bother to put the
function into the right section.

	PR ld/18223
	* ldlang.c (lang_process): Add _init and _fini to gc_sym_list.
2015-04-10 10:27:03 +09:30
H.J. Lu
eba27bd781 Remove BNDPLT and add PARSE_AND_LIST_ARGS_CASE_Z
* emulparams/elf_x86_64.sh (BNDPLT): Removed.
	(PARSE_AND_LIST_OPTIONS): New.
	(PARSE_AND_LIST_ARGS_CASE_Z): Likewise.
	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Remove
	BNDPLT check.  Handle PARSE_AND_LIST_ARGS_CASE_Z.
	(gld${EMULATION_NAME}_list_options): Remove BNDPLT check.
2015-04-09 07:53:00 -07:00
Nick Clifton
233723a43c Update French translation of ld strings.
* po/fr.po: Updated French translation.
2015-04-09 14:56:29 +01:00
H.J. Lu
82d8e420ab Enable ELF ld_list_options for --enable-targets=all
When --enable-targets=all is used with non-ELF target, we should enable
ELF ld_list_options.

	* configure.ac (elf_list_options): Set to TRUE for
	--enable-targets=all.
	(elf_shlib_list_options): Likewise.
	(elf_plt_unwind_list_options): Likewise.
	* configure: Regenerated.
2015-04-08 17:08:45 -07:00
H.J. Lu
31b94bbb7b Skip empty EMULATION_NAME
* emulparams/elf32bmipn32-defs.sh: Skip empty EMULATION_NAME.
2015-04-08 09:46:50 -07:00
H.J. Lu
151411f8af Add SHF_COMPRESSED support to gas and objcopy
This patch adds --compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}
options to gas and objcopy for ELF files. They control how DWARF debug
sections are compressed.  --compress-debug-sections=none is equivalent to
--nocompress-debug-sections.  --compress-debug-sections=zlib and
--compress-debug-sections=zlib-gnu are equivalent to
--compress-debug-sections.  --compress-debug-sections=zlib-gabi compresses
DWARF debug sections with SHF_COMPRESSED from the ELF ABI.  No linker
changes are required to support SHF_COMPRESSED.

bfd/

	* archive.c (_bfd_get_elt_at_filepos): Also copy BFD_COMPRESS_GABI
	bit.
	* bfd.c (bfd::flags): Increase size to 18 bits.
	(BFD_COMPRESS_GABI): New.
	(BFD_FLAGS_SAVED): Add BFD_COMPRESS_GABI.
	(BFD_FLAGS_FOR_BFD_USE_MASK): Likewise.
	(bfd_update_compression_header): New fuction.
	(bfd_check_compression_header): Likewise.
	(bfd_get_compression_header_size): Likewise.
	(bfd_is_section_compressed_with_header): Likewise.
	* compress.c (MAX_COMPRESSION_HEADER_SIZE): New.
	(bfd_compress_section_contents): Return the uncompressed size if
	the full section contents is compressed successfully.  Support
	converting from/to .zdebug* sections.
	(bfd_get_full_section_contents): Call
	bfd_get_compression_header_size to get compression header size.
	(bfd_is_section_compressed): Renamed to ...
	(bfd_is_section_compressed_with_header): This.  Add a pointer
	argument to return compression header size.
	(bfd_is_section_compressed): Use it.
	(bfd_init_section_decompress_status): Call
	bfd_get_compression_header_size to get compression header size.
	Return FALSE if uncompressed section size is 0.
	* elf.c (_bfd_elf_make_section_from_shdr): Support converting
	from/to .zdebug* sections.
	* bfd-in2.h: Regenerated.

binutils/

	* objcopy.c (do_debug_sections): Add compress_zlib,
	compress_gnu_zlib and compress_gabi_zlib.
	(copy_options): Use optional_argument on compress-debug-sections.
	(copy_usage): Update --compress-debug-sections.
	(copy_file): Handle compress_zlib, compress_gnu_zlib and
	compress_gabi_zlib.
	(copy_main): Handle
	--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
	* doc/binutils.texi: Document
	--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.

binutils/testsuite/

	* compress.exp: Add tests for
	--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
	* binutils-all/dw2-3.rS: New file.
	* binutils-all/dw2-3.rt: Likewise.
	* binutils-all/libdw2-compressedgabi.out: Likewise.

gas/

	* as.c (show_usage): Update --compress-debug-sections.
	(std_longopts): Use optional_argument on compress-debug-sections.
	(parse_args): Handle
	--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
	* as.h (compressed_debug_section_type): New.
	(flag_compress_debug): Change type to compressed_debug_section_type.
	--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
	* write.c (compress_debug): Set BFD_COMPRESS_GABI for
	--compress-debug-sections=zlib-gabi.  Call
	bfd_get_compression_header_size to get compression header size.
	Don't rename section name for --compress-debug-sections=zlib-gabi.
	* config/tc-i386.c (compressed_debug_section_type): Set to
	COMPRESS_DEBUG_ZLIB.
	* doc/as.texinfo: Document
	--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.

gas/testsuite/

	* gas/i386/dw2-compressed-1.d: New file.
	* gas/i386/dw2-compressed-2.d: Likewise.
	* gas/i386/dw2-compressed-3.d: Likewise.
	* gas/i386/x86-64-dw2-compressed-2.d: Likewise.
	* gas/i386/i386.exp: Run dw2-compressed-2, dw2-compressed-1,
	dw2-compressed-3 and x86-64-dw2-compressed-2.

ld/testsuite/

	* ld-elf/compress.exp: Add a test for
	--compress-debug-sections=zlib-gabi.
	(build_tests): Add 2 tests for --compress-debug-sections=zlib-gabi.
	(run_tests): Likewise.
	Verify linker output with zlib-gabi compressed debug input.
	* ld-elf/compressed1a.d: New file.
	* ld-elf/compressed1b.d: Likewise.
	* ld-elf/compressed1c.d: Likewise.
2015-04-08 07:54:09 -07:00
H.J. Lu
c58212eaf9 Add ld_list_options
This patch adds ld_list_options for ELF targets to avoid duplicated
outputs from ld --help.

	* Makefile.am (ELF_CLFAGS): New.
	(AM_CFLAGS): Add $(ELF_CLFAGS).
	* configure.ac (elf_list_options): New.  AC_SUBST.
	(elf_shlib_list_options): Likewise.
	(elf_plt_unwind_list_options): Likewise.
	* lexsup.c (elf_shlib_list_options): New.
	(elf_static_list_options): Likewise.
	(elf_plt_unwind_list_options): Likewise.
	(ld_list_options): Likewise.
	(help): Call ld_list_options.
	* Makefile.in: Regenerated.
	* configure: Likewise.
	* emulparams/plt_unwind.sh (PLT_UNWIND): New.
	(PARSE_AND_LIST_OPTIONS): Removed.
	* emultempl/elf32.em (gld_list_options): New.
	(gld${EMULATION_NAME}_list_options): Define only if BNDPLT or
	PARSE_AND_LIST_OPTIONS is defined.
	(ld_${EMULATION_NAME}_emulation): Replace
	gld${EMULATION_NAME}_list_options with ${gld_list_options.
2015-04-08 04:55:23 -07:00
Nick Clifton
3ea6077552 Add new linker option: --warn-orphan which generates warning messages when orphan sections are detected.
ld	* ld.h (struct ld_config_type): Add new field: warn_orphan.
	* ldlex.h (enum option_values): Add OPTION_WARN_ORPHAN and
	OPTION_NO_WARN_ORPHAN.
	* lexsup.c (ld_options): Add --warn-orphan and --no-warn-orphan.
	(parse_args): Handle the new options.
	* ldemul.c (ldemul_place_orphan): If requested, generate a warning
	message when an orphan section is placed in the output file.
	* ld.texinfo: Document the new option.
	* NEWS: Mention the new feature.

tests	* ld-elf/orphan-5.l: New test - checks the linker's output with
	--warn-orphan enabled.
	* ld-elf/elf.exp: Run the new test.
2015-04-07 16:29:41 +01:00
Alan Modra
87070c082f Modify get_reloc_section for targets that map .got.plt to .got
Fixes tic6x testsuite failures due to .rela.plt having a zero sh_info.
I considered passing link_info to get_reloc_section so we could
directly return the .got.plt output section, but we need the fallback
to name lookup anyway for objcopy.

bfd/
	* elf.c (_bfd_elf_get_reloc_section): Allow for .got.plt being
	mapped to output .got section.
ld/testsuite/
	* ld-arm/tls-gdesc-nlazy.g: Adjust for readelf note.
	* ld-tic6x/shlib-1.rd: Expect corrected .rela.plt sh_info.
	* ld-tic6x/shlib-1b.rd: Likewise.
	* ld-tic6x/shlib-1r.rd: Likewise.
	* ld-tic6x/shlib-1rb.rd: Likewise.
	* ld-tic6x/shlib-app-1.rd: Likewise.
	* ld-tic6x/shlib-app-1b.rd: Likewise.
	* ld-tic6x/shlib-app-1r.rd: Likewise.
	* ld-tic6x/shlib-app-1rb.rd: Likewise.
	* ld-tic6x/shlib-noindex.rd: Likewise.
2015-04-07 23:22:11 +09:30
Alan Modra
0fad6e4b94 Cast shift expression
PR ld/18176
	* ldlang.c (lang_size_sections): Cast shift expression.
2015-04-07 23:21:42 +09:30
Alan Modra
d3e454b956 PowerPC non-PIC to PIC editing for protected var access
This is a linker-only solution to the incompatibility between shared
library protected visibility variables and using .dynbss and copy
relocs for non-PIC access to shared library variables.

bfd/
	* elf32-ppc.c (struct ppc_elf_link_hash_entry): Add has_addr16_ha
	and has_addr16_lo.  Make has_sda_refs a bitfield.
	(ppc_elf_check_relocs): Set new flags.
	(ppc_elf_link_hash_table_create): Update default_params.
	(ppc_elf_adjust_dynamic_symbol): Clear protected_def in cases
	where we won't be making .dynbss entries or editing code.  Set
	params->pic_fixup when we'll edit code for protected var access.
	(allocate_dynrelocs): Allocate got entry for edited code and
	discard dyn_relocs.
	(struct ppc_elf_relax_info): Add picfixup_size.
	(ppc_elf_relax_section): Rename struct one_fixup to struct
	one_branch_fixup.  Rename fixups to branch_fixups.  Size space for
	pic fixups.
	(ppc_elf_relocate_section): Edit non-PIC accessing protected
	visibility variables to PIC.  Don't emit dyn_relocs for code
	we've edited.
	* elf32-ppc.h (struct ppc_elf_params): Add pic_fixup.
ld/
	* emultempl/ppc32elf.em: Handle --no-pic-fixup.
	(params): Init new field.
	(ppc_before_allocation): Enable relaxation for pic_fixup.
2015-04-07 23:00:07 +09:30
H.J. Lu
dae148f3b9 Remove is_zlib_supported
Since zlib is always supported, there is no need for is_zlib_supported.

binutils/testsuite/

	* binutils-all/compress.exp: Remove is_zlib_supported check.
	* binutils-all/objdump.exp: Likewise.
	* binutils-all/readelf.exp (readelf_compressed_wa_test): Likewise.
	* lib/utils-lib.exp (run_dump_test): Likewise.
	* lib/binutils-common.exp (is_zlib_supported): Removed.

gas/testsuite/

	* lib/gas-defs.exp (run_dump_test): Remove is_zlib_supported check.

ld/testsuite/

	* ld-elf/compress.exp: Remove is_zlib_supported check.
	Fail if --compress-debug-sections doesn't work.
	* lib/ld-lib.exp (run_dump_test): Remove is_zlib_supported check.
2015-04-06 12:19:13 -07:00
Andrew Turner
15c7659fd1 Add support for configuring an aarch64-freebsd target.
ld	* Makefile.am: Add FreeBSD aarch64 files.
	* Makefile.in: Regenerate.
	* configure.tgt: Add aarch64-*-freebsd* target triple.
	* emulparams/aarch64fbsd.sh: New file.
	* emulparams/aarch64fbsdb.sh: New file.

bfd	* config.bfd: Add aarch64-*-freebsd* target triple.
2015-04-02 15:07:27 +01:00
H.J. Lu
a0bde39842 Work around a GCC uninitialized warning bug
* emultempl/elf32.em (gld${EMULATION_NAME}_before_allocation): Work
	around a GCC uninitialized warning bug fixed in GCC 4.6.
2015-04-01 08:14:32 -07:00
Marcus Shawcroft
4106101c44 [AArch64] Workaround for Cortex A53 erratum 843419
Some early revisions of the Cortex-A53 have an erratum (843419).  The
details of the erratum are quite complex and involve dynamic
conditions.  For the purposes of the workaround we have simplified the
static conditions to an ADRP in the last two instructions of a 4KByte
page, followed within four instructions by a load/store dependent on
the ADRP.

This patch adds support to conservatively scan for and workaround
Cortex A53 erratum 843419.  There are two different workaround
strategies used.  The first is to rewrite ADRP instructions which form
part of an erratum sequence with an ADR instruction.  In situations
where the ADR provides insufficient offset the dependent load or store
instruction from the sequence is moved to a stub section and branches
are inserted from the original sequence to the relocated instruction
and back again.

Stub section sizes are rounded up to a multiple of 4096 in order to
ensure that the act of inserting work around stubs does not create
more errata sequences.

Workaround stubs are always inserted into the stub section associated
with the input section containing the erratum sequence.  This ensures
that the fully relocated form of the veneered load store instruction
is available at the point in time when the stub section is written.
2015-04-01 13:16:38 +01:00
H.J. Lu
875b5b9d14 Add a testcase for PR ld/18176
PR ld/18176
	* ld-x86-64/pr18176.d: New file.
	* ld-x86-64/pr18176.s: Likewise.
	* ld-x86-64/pr18176.t: Likewise.
	* ld-x86-64/x86-64.exp: Run pr18176.
2015-04-01 04:24:24 -07:00
Chen Gang
16c1c9d6a6 Prevent multiple definitions for _HEAP_START, _HEAP_MAX, and _STACK_START when performing a relocatable link with a tic6x target.
* emulparams/elf32_tic6x_le.sh: Skip OTHER_BSS_SECTIONS for
	relocating operation.
2015-04-01 11:29:46 +01:00
Alan Modra
6c1aca3e2d Start of relro segment adjustment
Adjusting the start of the relro segment in order to make it end
exactly on a page boundary runs into difficulties when sections in the
relro segment are aligned;  Adjusting the start by (next_page - end)
sometimes results in more than that adjustment occurring at the end,
overrunning the page boundary.  So when that occurs we try a new lower
start position by masking the adjusted start with the maximum section
alignment.  However, we didn't consider that this masked start address
may in fact be before the initial relro base, which is silly since
that can only increase padding at the relro end.

I've also moved some calculations closer to where they are used, and
comments closer to the relevant statements.

	* ldlang.c (lang_size_sections): When alignment of sections
	results in relro base adjustment being too large, don't go lower
	than the initial value.
	* ldexp.c (fold_binary <DATA_SEGMENT_RELRO_END>): Comment.
	* scripttempl/elf.sc (DATA_SEGMENT_ALIGN): Omit SEGMENT_SIZE
	alignment when SEGMENT_SIZE is the same as MAXPAGESIZE.
2015-04-01 19:37:58 +10:30
Alan Modra
4a0bc59ef6 Yet another warning fix
Older compilers that warn wrongly will just need -Wno-error.  No way
am I going to init every single field, then have to edit this code
whenever bfd_link_hash_entry changes.  Another option, making the
struct static, isn't very nice since it means larger binaries and
worse code.

	* emultempl/elf32.em (gld${EMULATION_NAME}_before_allocation): Don't
	init ehdr_start_save.
2015-04-01 13:14:53 +10:30
Alan Modra
42271ec540 Fix ld eelf32ppcvxworks.c dependencies
* Makefile.am (eelf32ppcvxworks.c): Depend on ppc32elf.em and
	ldemul-list.h.
	(eelf32lppc.c, eelf32lppclinux.c, eelf32lppcnto.c, eelf32lppcsim.c,
	eelf32ppc.c, eelf32ppc_fbsd.c, eelf32ppclinux.c, eelf32ppcnto.c,
	eelf32ppcsim.c): Rearrange deps for consistency.
	* Makefile.in: Regenerate.
2015-04-01 11:06:14 +10:30
Ed Schouten
4e791d0fb1 Fixes for a small number of compiler warnings
The ehdr_start_save variable does not need to be initialized.  However,
not initializing it will trigger a compiler warning when using older
versions of GCC.  Self-assignment unfortunately doesn't work for Clang
as Clang has a warning similar to -Winit-self as part of -Wall.

	* emultempl/elf32.em (gld*_before_allocation): Zero-initialize
	the ehdr_start_save variable.
2015-04-01 11:06:14 +10:30
Ed Schouten
6036f48621 Add support for Nuxi CloudABI on x86-64
bfd/

	* config.bfd (targ_defvec): Set to x86_64_elf64_cloudabi_vec
	for x86_64-*-cloudabi*.
	* configure.ac: Handle x86_64_elf64_cloudabi_vec.
	* configure: Regenerated.
	* elf64-x86-64.c (TARGET_LITTLE_SYM): Support x86_64-*-cloudabi*.
	(TARGET_LITTLE_NAME): Likewise.
	(ELF_OSABI): Likewise.
	(elf64_bed): Likewise.
	* targets.c (x86_64_elf64_cloudabi_vec): New.
	(_bfd_target_vector): Add x86_64_elf64_cloudabi_vec.

gas/

	* configure.tgt (fmt): Set to elf for *-*-cloudabi*.

ld/

	* Makefile.am (ALL_64_EMULATION_SOURCES): Add
	eelf_x86_64_cloudabi.c.
	(eelf_x86_64_cloudabi.c): New.
	* configure.tgt (targ_emul): Set to elf_x86_64_cloudabi for
	x86_64-*-cloudabi*.
	* Makefile.in: Regenerated.
	* emulparams/elf_x86_64_cloudabi.sh: New file.
2015-03-31 08:11:08 -07:00
H.J. Lu
f24173ebf7 Remove --with-zlib from ld
This patch removes --with-zlib from ld.

ld/

	* configure.ac (AM_ZLIB): Removed.
	* Makefile.in: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.

ld/testsuite/

	* ld-bootstrap/bootstrap.exp (extralibs): Add -lz.
2015-03-31 03:59:04 -07:00
H.J. Lu
bd53a53af4 Properly set sh_info for .rela.plt/rel.plt section
Since .rela.plt/rel.plt section may contain relocations against .got.plt
section, we set sh_info for .rela.plt/rel.plt section to .got.plt section
index if target has .got.plt section.

bfd/

	PR ld/18169
	* elf-bfd.h (elf_backend_data): Add get_reloc_section.
	(_bfd_elf_get_reloc_section): New.
	* elf.c (_bfd_elf_get_reloc_section): Likewise.
	(assign_section_numbers): Call get_reloc_section to look up the
	section the relocs apply.
	* elfxx-target.h (elf_backend_get_reloc_section): Likewise.
	(elfNN_bed): Initialize get_reloc_section with
	elf_backend_get_reloc_section.

ld/testsuite/

	PR ld/18169
	* ld-elf/linkinfo1a.d: Updated.
	* ld-elf/linkinfo1b.d: Likewise.
2015-03-30 04:40:49 -07:00
H.J. Lu
5e228181d4 Don't run ld-x86-64/pr18160.d for x86_64-*-nacl*
* ld-x86-64/pr18160.d: Don't run for x86_64-*-nacl* target.
2015-03-27 14:40:43 -07:00
Tejas Belagod
93ca856967 [AArch64] Fix branch stubs for BE
2015-03-26  Tejas Belagod  <tejas.belagod@arm.com>

ld/testsuite
  * ld-aarch64/farcall-back-be.d: New.

bfd/
  * elfnn-aarch64.c (aarch64_build_one_stub): Replace the call to generic
  _bfd_final_link_relocate with aarch64_relocate.
2015-03-26 16:20:38 +00:00
H.J. Lu
b19a8f8545 Skip gc-sections if relocation is incompatible
This patch skips gc-sections if input relocation is incompatible with
output.

bfd/

	PR ld/18160
	* elflink.c (elf_gc_sweep): Skip if relocation is incompatible.
	(bfd_elf_gc_sections): Likewise.

ld/testsuite/

	PR ld/18160
	* ld-x86-64/pr18160.d: New file.
	* ld-x86-64/pr18160.s: Likewise.
	* ld-x86-64/pr18160.t: Likewise.
	* ld-x86-64/x86-64.exp: Run pr18160.
2015-03-26 08:22:55 -07:00
Marcus Shawcroft
618655192f [AArch64] Implement branch over stub section.
Ensure that injection of a stub section does not break a link where
there is an xpectation that flow of control can pass from one input
section to another simply by linking the input sections in series.

The solution here is to allow stub sections to be inserted after any
input section (existing behaviour), but inject an additional branch at
the start of each stub section such that control flow falling into the
stub section will branch over the stub section.
2015-03-25 15:16:04 +00:00
Marcus Shawcroft
d9ced15d6e [AArch64] Remove padding before stub sections.
Lower stub alignment from 8 to 4 bytes thus removing padding between
input section content and stub section content.
2015-03-25 15:15:40 +00:00
Senthil Kumar Selvaraj
d422d1c433 Garbage collecting debug sections
I noticed that _bfd_elf_gc_mark_extra_sections attempts to unmark
related debug sections when it finds an unmarked code section.
When it finds .text.foo is unmarked, for example, it removes
.debug_line.text.foo as well (using the section name as a suffix
match check.

However, it bails out after finding one such section.

bfd/
	* elflink.c (_bfd_elf_gc_mark_extra_sections): Don't break on
	first matching debug section.
ld/testsuite/
	* ld-gc/all-debug-sections.d: New file.
	* ld-gc/all-debug-sections.s: Likewise.
	* ld-gc/gc.exp: Execute new testcase.
2015-03-25 20:42:00 +10:30
Marcus Shawcroft
499c37b59a [AArch64] Adjust layout emultempl/aarch64elf.em. 2015-03-23 14:35:21 +00:00
Chen Gang
b3862264bc Use %F instead of %X for einfo
When src or dst is NULL, the next fread or fwrite will cause a
segmentation fault, so we need to treat it as fatal.

	* ldmain.c (main): Use %F instead of %X for einfo.
2015-03-18 11:45:12 +10:30
Alan Modra
1079403cc0 Fix ppc32 synthetic symbols when __tls_get_addr_opt stub is generated
Also update the 32-bit tls testcases to be secure plt.

bfd/
	* elf32-ppc.c (ppc_elf_get_synthetic_symtab): Examine stubs in
	reverse order.  Account for larger size of __tls_get_addr_opt stub.
ld/testsuite/
	* ld-powerpc/tls32.s: Add GOT pointer setup.
	* ld-powerpc/tls32.d: Update.
	* ld-powerpc/tls32.g: Update.
	* ld-powerpc/tls32.t: Update.
	* ld-powerpc/tlsexe.d: Update.
	* ld-powerpc/tlsexe32.d: Update.
	* ld-powerpc/tlsexe32.g: Update.
	* ld-powerpc/tlsexe32.r: Update.
	* ld-powerpc/tlsexetoc.d: Update.
	* ld-powerpc/tlsso32.d: Update.
	* ld-powerpc/tlsso32.g: Update.
	* ld-powerpc/tlsso32.r: Update.
2015-03-11 18:04:25 +10:30
H.J. Lu
ca3fe95e46 Add extern_protected_data and set it for x86
With copy relocation, address of protected data defined in the shared
library may be external.  This patch adds extern_protected_data and
changes _bfd_elf_symbol_refs_local_p to return false for protected data
if extern_protected_data is true.

bfd/

	PR ld/pr15228
	PR ld/pr17709
	* elf-bfd.h (elf_backend_data): Add extern_protected_data.
	* elf32-i386.c (elf_backend_extern_protected_data): New.
	Defined to 1.
	* elf64-x86-64.c (elf_backend_extern_protected_data): Likewise.
	* elflink.c (_bfd_elf_adjust_dynamic_copy): Don't error on
	copy relocs against protected symbols if extern_protected_data
	is true.
	(_bfd_elf_symbol_refs_local_p): Don't return true on protected
	non-function symbols if extern_protected_data is true.
	* elfxx-target.h (elf_backend_extern_protected_data): New.
	Default to 0.
	(elfNN_bed): Initialize extern_protected_data with
	elf_backend_extern_protected_data.

ld/testsuite/

	PR ld/pr15228
	PR ld/pr17709
	* ld-i386/i386.exp (i386tests): Add a test for PR ld/17709.
	* ld-i386/pr17709-nacl.rd: New file.
	* ld-i386/pr17709.rd: Likewise.
	* ld-i386/pr17709a.s: Likewise.
	* ld-i386/pr17709b.s: Likewise.
	* ld-i386/protected3.d: Updated.
	* ld-i386/protected3.s: Likewise.
	* ld-x86-64/pr17709-nacl.rd: New file.
	* ld-x86-64/pr17709.rd: Likewise.
	* ld-x86-64/pr17709a.s: Likewise.
	* ld-x86-64/pr17709b.s: Likewise.
	* ld-x86-64/protected3.d: Updated.
	* ld-x86-64/protected3.s: Likewise.
	* ld-x86-64/x86-64.exp (x86_64tests): Add a test for PR ld/17709.
2015-03-05 06:34:53 -08:00
Richard Sandiford
e09ab7ac78 Allow MOVK for R_AARCH64_TLSLE_MOVW_TPREL_G{0,1}NC
bfd/
	PR gas/17843
	* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Expect
	R_AARCH64_TLSLE_MOVW_TPREL_G0_NC and R_AARCH64_TLSLE_MOVW_TPREL_G1_NC
	to be used with MOVK rather than MOVZ.

gas/
	PR gas/17843
	* config/tc-aarch64.c (process_movw_reloc_info): Allow
	R_AARCH64_TLSLE_MOVW_TPREL_G0_NC and R_AARCH64_TLSLE_MOVW_TPREL_G1_NC
	for MOVK.

gas/testsuite/
	PR gas/17843
	* gas/aarch64/tls.s, gas/aarch64/tls.d: Add test for
	R_AARCH64_TLSLE_MOVW_TPREL_G0/R_AARCH64_TLSLE_MOVW_TPREL_G1_NC
	sequence.

ld/testsuite/
	PR gas/17843
	* ld-aarch64/tlsle.s, ld-aarch64/tlsle.d: New test.
	* ld-aarch64/aarch64-elf.exp: Run it.
2015-03-04 09:09:05 +00:00
Alan Modra
daf220f0a7 Correct -z nocopyreloc doc
This option is misnamed.  It should probably be called -z nodynbss,
but it's too late to change now.

	* ld.texinfo (Options <-z nocopyreloc>): Rewrite.
2015-03-02 16:57:08 +10:30
Alan Modra
9028d9432c Pad only text sections at end by default
gas/
	* write.c (SUB_SEGMENT_ALIGN): Don't pad non-code sections at
	end to their alignment.
gas/testsuite/
	* gas/sparc/pcrel.d: Update for changed padding in data sections.
	* gas/sparc/pcrel64.d: Likewise.
ld/testsuite/
	* ld-sparc/gotop32.rd: Update for changed padding in data sections.
	* ld-sparc/gotop32.td: Likewise.
	* ld-sparc/gotop64.rd: Likewise.
	* ld-sparc/gotop64.td: Likewise.
	* ld-tilegx/external.s: Align .data.
	* ld-tilepro/external.s: Likewise.
2015-02-28 22:26:56 +10:30