Commit graph

2868 commits

Author SHA1 Message Date
Nick Clifton
837a17b36c Add support to the MSP430 linker for the automatic placement of code and data into either low or high memory regions.
gas	* config/tc-msp430.c (MAX_OP_LEN): Increase to 4096.
	(msp430_make_init_symbols): New function.
	(msp430_section): Call it.
	(msp430_frob_section): Likewise.

ld	* emulparams/msp430elf.sh (TEMPLATE_NAME): Change to msp430.
	* scripttempl/msp430.sc (.text): Add .lower.text and .either.text.
	(.data): Add .lower.data and .either.data.
	(.bss): Add .lower.bss and .either.bss.
	(.rodata): Add .lower.rodata and .either.rodata.
	* emultempl/msp430.em: New file.  Implements a new orphan
	placement algorithm that divides sections between lower and upper
	memory regions.
	* Makefile.am (emsp430elf.c): Depend upon msp430.em.
	*emsp430X.c): Likewise.
	* Makefine.in: Regenerate.
2015-05-05 13:38:00 +01:00
Andreas Schwab
a13eab064f Eat newlines inside INPUT statements in linker scripts
ld/
	PR ld/18344
	* ldlex.l (INPUTLIST): Increment lineno on newline.
2015-04-28 21:55:28 +02:00
Alan Modra
44bd1acd55 Non-alloc sections don't belong in PT_LOAD segments
Taking them out showed a bug in the powerpc64 backend with .branch_lt
being removed from output_bfd but not from previously set up segment
section maps.  Removing the bfd sections meant their sh_flags (and
practically everything else) remaining zero, ie. not SHF_ALLOC,
triggering complaints about "`.branch_lt' can't be allocated in
segment".

include/elf/
	* internal.h (ELF_SECTION_IN_SEGMENT_1): Ensure PT_LOAD and
	similar segments only contain alloc sections.
ld/
	* emultempl/ppc64elf.em (gld${EMULATION_NAME}_after_allocation):
	Call gld${EMULATION_NAME}_map_segments regardless of need_laying_out.
ld/testsuite/
	* ld-powerpc/tocnovar.d: Revert last change.
2015-04-25 09:15:49 +09:30
DJ Delorie
d9e88e9021 Fix typo 2015-04-24 17:17:02 -04:00
DJ Delorie
08e2f2bbb4 Change msp430 emulation to msp430elf
* Makefile.am (msp430): Rename primary emulation to msp430elf.
(emsp430.c): Rename to emsp430elf.c, update dependencies
(emsp430X.c): Update dependencies.
* Makefile.in: Likewise.
* configure.tgt (msp430-*-*): Rename primary emulation to msp430elf.
* emulparame/msp430.sh: Rename to msp430elf.sh.
* emulparams/msp430X.sh: Update.
2015-04-24 17:05:52 -04:00
H.J. Lu
f6fe1ccd62 Don't change compressed input debug section names
Change compressed input debug section name for objdump is very confusing.
But we need to change it for linker so that linker will consider the
input section as a debug section.  This patch delays section rename to
elf_fake_sections for objcopy and avoids it for objdump.

bfd/

	PR binutils/18209
	* bfd.c (bfd): Add is_linker_input.
	* elf.c (convert_debug_to_zdebug): New.
	(convert_zdebug_to_debug): Likewise.
	(_bfd_elf_make_section_from_shdr): Don't convert .debug_* to
	.zdebug_* here.  Use convert_zdebug_to_debug.  Set SEC_ELF_RENAME.
	(_bfd_elf_init_reloc_shdr): Pass a pointer to section name
	instead of a pointer to section.
	(elf_fake_sections): Rename the section name if SEC_ELF_RENAME
	is set.
	* section.c (SEC_ELF_RENAME): New.
	* bfd-in2.h: Regenerated.

binutils/

	PR binutils/18209
	* objcopy.c (setup_section): Copy compress status.

binutils/testsuite/

	PR binutils/18209
	* binutils-all/compress.exp: Replace dw2-3.W with dw2-3gabi.W
	on zlib-gabi output.
	* binutils-all/dw2-1.W: Convert section names to .zdebug_*.
	* binutils-all/dw2-3.W: Likewise.
	* binutils-all/objdump.W: Likewise.
	* binutils-all/dw2-3gabi.W: New file.

ld/

	PR binutils/18209
	* ldfile.c (ldfile_try_open_bfd): Set is_linker_input to 1.
2015-04-23 07:59:59 -07:00
Alan Modra
a27e685fa0 Align .TOC. for PowerPC64
This change, with prerequisite 0e5fabeb, provides a toc base aligned
to 256 bytes rather than 8 bytes.  This is necessary for a minor gcc
optimisation, allowing use of d-form instructions to correctly access
toc-relative items larger than 8 bytes.

bfd/
	* elf64-ppc.c (TOC_BASE_ALIGN): Define.
	(ppc64_elf_next_toc_section): Align multi-got toc base.
	(ppc64_elf_set_toc): Likewise initial toc base and .TOC. symbol.
ld/
	* emulparams/elf64ppc.sh (GOT): Align.
ld/testsuite/
	* ld-powerpc/ambiguousv1b.d: Update for aligned .got.
	* ld-powerpc/defsym.d: Likewise.
	* ld-powerpc/elfv2-2exe.d: Likewise.
	* ld-powerpc/elfv2exe.d: Likewise.
	* ld-powerpc/elfv2so.d: Likewise.
	* ld-powerpc/relbrlt.d: Likewise.
	* ld-powerpc/tls.g: Likewise.
	* ld-powerpc/tlsexe.d: Likewise.
	* ld-powerpc/tlsexe.g: Likewise.
	* ld-powerpc/tlsexe.r: Likewise.
	* ld-powerpc/tlsexetoc.d: Likewise.
	* ld-powerpc/tlsexetoc.g: Likewise.
	* ld-powerpc/tlsexetoc.r: Likewise.
	* ld-powerpc/tlsso.d: Likewise.
	* ld-powerpc/tlsso.g: Likewise.
	* ld-powerpc/tlsso.r: Likewise.
	* ld-powerpc/tlstoc.g: Likewise.
	* ld-powerpc/tlstocso.d: Likewise.
	* ld-powerpc/tlstocso.g: Likewise.
	* ld-powerpc/tlstocso.r: Likewise.
	* ld-powerpc/tocopt.d: Likewise.
	* ld-powerpc/tocopt2.d: Likewise.
	* ld-powerpc/tocopt3.d: Likewise.
	* ld-powerpc/tocopt4.d: Likewise.
	* ld-powerpc/tocopt5.d: Likewise.
2015-04-23 09:49:19 +09:30
Alan Modra
0e5fabeb2c Rewrite relro adjusting code
The linker tries to put the end of the last section in the relro
segment exactly on a page boundary, because the relro segment itself
must end on a page boundary.  If for any reason this can't be done,
padding is inserted.  Since the end of the relro segment is typically
between .got and .got.plt, padding effectively increases the size of
the GOT.  This isn't nice for targets and code models with limited GOT
addressing.

The problem with the current code is that it doesn't cope very well
with aligned sections in the relro segment.  When making .got aligned
to a 256 byte boundary for PowerPC64, I found that often the initial
alignment attempt failed and the fallback attempt to be less than
adequate.  This is a particular problem for PowerPC64 since the
distance between .got and .plt affects the size of plt call stubs,
leading to "stubs don't match calculated size" errors.

So this rewrite takes a direct approach to calculating a new relro
base.  Starting from the last section in the segment, we calculate
where it must start to position its end on the boundary, or as near as
possible considering alignment requirements.  The new start then
becomes the goal for the previous section to end, and so on for all
sections.  This of course ignores the possibility that user scripts
will place . = ALIGN(xxx); in the relro segment, or provide section
address expressions.  In those cases we might fail, but the old code
probably did too, and a fallback is provided.

ld/
	* ldexp.h (struct ldexp_control): Delete dataseg.min_base.  Add
	data_seg.relro_offset.
	* ldexp.c (fold_binary <DATA_SEGMENT_ALIGN>): Don't set min_base.
	(fold_binary <DATA_SEGMENT_RELRO_END>): Do set relro_offset.
	* ldlang.c (lang_size_sections): Rewrite code adjusting relro
	segment base to line up last section on page boundary.
ld/testsuite/
	* ld-x86-64/pr18176.d: Update.
2015-04-22 23:19:59 +09:30
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
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
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
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
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
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
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
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
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
Nick Clifton
f0673d2040 Fixes a problem with the linker script parser not always handling the ! character in memort region attributes.
PR ld/17900
	* ldlang.c (lang_set_flags): Allow exclamation mark to reverse the
	sense of the following memory region attribute characters.
2015-02-27 16:19:57 +00:00
Alan Modra
330b17b30f Fix recent h8300 configury changes
* Makefile.am (ALL_EMULATION_SOURCES): Sort new h8300 entries.
	(eh8300elf_linux.c, eh8300helf_linux.c, eh8300self_linux.c,
	eh8300sxelf_linux.c): Do not invoke genscripts here.
	* Makefile.in: Regenerate.
2015-02-27 11:47:20 +10:30
Nick Clifton
685080f210 Adds support for generating notes in V850 binaries.
bfd	* elf32-v850.c (v850_set_note): New function.  Creates a Renesas
	style note entry.
	(v850_elf_make_note_section): New function.  Creates a note
	section.
	(v850_elf_create_sections): New function.  Create a note section
	if one is not already present.
	(v850_elf_set_note): New function.  Adds a note to a bfd.
	(v850_elf_copy_private_bfd_data): New function.  Copies V850
	notes.
	(v850_elf_merge_notes): New function.  Merges V850 notes.
	(print_v850_note): New function.  Displays a V850 note.
	(v850_elf_print_notes): New function. Displays all notes attached
	to a bfd.
	(v850_elf_merge_private_bfd_data): Call v850_elf_merge_notes.
	(v850_elf_print_private_bfd_data): Call v850_elf_print_notes.
	(v850_elf_fake_sections): Set the type of the V850 note section.
	* bfd-in.h (v850_elf_create_sections): Add prototype.
	(v850_elf_set_note): Add prototype.
	* bfd-in2.h: Regenerate.

binutils* readelf.c (get_machine_flags): Remove deprecated V850 machine
	flags.
	(get_v850_section_type_name): New function.  Handles V850 special
	sections.
	(get_section_type_name): Add support for V850.
	(get_v850_elf_note_type): New function.  Returns the name of a
	V850 note.
	(print_v850_note): New function.  Prints a V850 note.
	(process_v850_notes): New function.  Prints V850 notes.
	(process_note_sections): Add support for V850.

binutils/testsute
	* binutils-all/objcopy.exp: Skip the strip-10 test for the V850.

gas	* config/tc-v850.c (soft_float): New variable.
	(v850_data_8): New variable.
	(md_show_usage): Add -msoft-float/-mhard-float.
	(md_parse_option): Likewise.
	(md_begin): Set the default value of soft_float.
	(v850_md_end): New function.  Creates a note section.
	* config/tc-v850.h (md_end): Define.
	* doc/c-v850.texi: Document -msoft-float/-mhard-float.

gas/testsuite
	* gas/elf/elf.exp: Add special version of the section2 test for
	the V850.
	* gas/elf/section2.e-v850: New file.

include/elf
	* v850.h (EF_RH850_SIMD): Delete deprecated flag.
	(EF_RH850_CACHE): Likewise.
	(EF_RH850_MMU): Likewise.
	(EF_RH850_DATA_ALIGN8): Likewise.
	(SHT_RENESAS_IOP): Fix typo in name.
	(SHT_RENESAS_INFO): Define.
	(V850_NOTE_SECNAME): Define.
	(SIZEOF_V850_NOTE): Define.
	(V850_NOTE_NAME): Define.
	(enum v850_notes): New enum.
	(NUM_V850_NOTES): Define.

ld/ChangeLog
2015-02-24  Nick Clifton  <nickc@redhat.com>

	* Makefile.am (ev850.c): Add dependency upon
	$(srcdir)/emultempl/v850elf.em.
	(ev850_rh850.c): Likewise.
	* Makefile.in: Regenerate.
	* emultempl/v850elf.em: New file.
	* emulparams/v850.sh (EXTRA_EM_FILE): Define.
	* emulparams/v850_rh850.sh (EXTRA_EM_FILE): Define.
	* scripttempl/v850.sc: Add .note.renesas section.
	* scripttempl/v850_rh850.sc: Likewise.

ld/testsuite
	* ld-elf/extract-symbol-1sec.d: Expect to fail on the V850.
2015-02-24 17:54:09 +00:00
Senthil Kumar Selvaraj
cb0728165e This patch modifies the AVR linker script templates to use __<name>_REGION_LENGTH__ symbols, if provided, for setting memory region lengths, defaulting to the current constant values otherwise.
ld	* scripttempl/avr.sc: Add new user_signatures region. Define and Use
	symbols for all region lengths.
	* scripttempl/avrtiny.sc: Define and use symbols for all region lengths.

testsuite * ld-avr/region_overflow.d: New test.
	* ld-avr/region_overflow.s: Likewise.
2015-02-24 11:26:28 +00:00
Yoshinori Sato
5518c738a4 Add support for the h8300-linux target.
ld	* Makefile.am: (ALL_EMULATION_SOURCES): Add new emulations.
	* Makefile.in: Regenerate.
	* configure.tgt: Add h8300-*-linux
	* emulparams/h8300elf_linux.sh: Add new emulation.
	* emulparams/h8300helf_linux.sh: Likewise.
	* emulparams/h8300self_linux.sh: Likewise.
	* emulparams/h8300sxelf_linux.sh: Likewise.

bfd	* config.bfd: Add h8300-*-linux.
	* configure.ac: Add h8300_elf32_linux_vec.
	* configure: Regenerate.
	* elf32-h8300.c: Likewise.
	* targets.c(_bfd_target_vector): Likewise.

gas	* config/tc-h8300.c (line_separater_chars): Add a version for
	h8300-linux that includes a separator.
	(default_mach): New variable.
	(md_main): Use it.
	(md_longopts): Add '--march' option.
	(md_parse_option): Parse the new option.
	* config/tc-h8300.h (TARGET_FORMAT): Add elf32-h8300-linux.
	* configure.tgt: Add h8300-*-linux
	* doc/c-h8300.texi: Document --march.
2015-02-23 17:04:53 +00:00
Nick Clifton
f971c12fc5 Fixes a problem where "ld -ixxx" would report an error of "ld: bad -rpath option".
* lexsup.c (parse_args): Produce a more reasonable error message
	when -ixxx or -rxxx is the last option on the linker command line.
2015-02-23 15:33:56 +00:00
H.J. Lu
f58926a652 Add a testcase for PR ld/17973
ld/

	PR ld/17973
	* testplug2.c (allsymbolsread_silent): New.
	(set_register_hook): Handle allsymbolsreadsilent.
	(onall_symbols_read): Skip a message if allsymbolsread_silent is
	TRUE.

ld/testsuite/

	PR ld/17973
	* ld-plugin/plugin.exp (regassilent): New.
	Compile tmpdir/dummy.s and ld-plugin/pr17973.s.
	(plugin_tests): Add a test for PR ld/17973.
	* ld-plugin/pr17973.d: New file.
	* ld-plugin/pr17973.s: Likewise.
2015-02-14 06:26:20 -08:00
Alan Modra
ce875075f9 PR ld/17973 LTO file syms
LTO output objects have an STT_FILE symbol using the name of the file,
a temporary file.  This results in executables that can't be exactly
reproduced, so the file name needs to be dropped.  We don't want to
lose all file symbols when linking a mix of lto and non-lto objects as
a file symbol can be used to figure which source file generated a
given local symbol.  So lto output objects need to be marked.

I chose to mark lto output objects with a new bfd flag.  This flag is
also used to fix a bug in the link-once handling;  An object being
loaded after "loading_lto_outputs" is set might be one extracted from
an archive to satisfy new references from lto objects, not an lto
object itself.

The new flag is copied from archive to elements, and the same done
for no_export.  This fixes a bug in that --exclude-libs doesn't work
with thin archives.  I'm not completely happy with this part of the
patch and may revist this to avoid the hack in
_bfd_look_for_bfd_in_cache.

	PR ld/17973
include/
	* bfdlink.h (struct bfd_link_info): Delete loading_lto_outputs.
bfd/
	* bfd.c (struct bfd): Add lto_output.
	* linker.c (_bfd_handle_already_linked): Explicitly test for
	objects added by the lto plugin.
	* opncls.c (_bfd_new_bfd_contained_in): Copy lto_output and
	no_export flags from archive.
	* archive.c (open_nested_file): New function, setting lto_output
	and no_export, extracted from..
	(find_nested_archive): ..here.  Flip params.  Rename from
	_bfd_find_nested_archive.
	(_bfd_get_elt_at_filepos): Correct var typo.  Use open_nested_file.
	(_bfd_look_for_bfd_in_cache): Copy no_export.
	* elflink.c (elf_link_add_object_symbols): Remove now unnecessary
	my_archive->no_export test.
	(elf_link_input_bfd): Drop existing lto_output STT_FILE syms.
	Don't use the file name when adding lto_output STT_FILE sym.
	* bfd-in2.h: Regenerate.
ld/
	* ldlang.h (struct lang_input_statement_flags): Add lto_output.
	* ldlang.c (lang_process): Don't set loading_lto_outputs.
	* ldfile.c (ldfile_try_open_bfd): Transfer entry flags.lto_output
	to bfd.
	* plugin.c (add_input_file, add_input_library): Set flags.lto_output.
2015-02-14 23:41:54 +10:30
H.J. Lu
b0619670ab Mention support for LLVM plugin in NEWS
* NEWS: Mention support for LLVM plugin.
2015-02-13 07:54:21 -08:00
Alan Modra
66bc873987 Correct ld.texinfo cross reference
Fixes
warning: @pxref cross-reference name should not contain `:'

	* ld.texinfo (Options <--defsym>): Correct cross reference.
2015-02-13 13:47:28 +10:30
H.J. Lu
88b9e2eb54 Add --[no-]map-whole-files for gold compatibility
Gold supports:

  --map-whole-files           Map whole files to memory (default on 64-bit hosts)
  --no-map-whole-files        Map relevant file parts to memory (default on 32-bit hosts)

This patch adds --[no-]map-whole-files command line options for gold
compatibility.  They are ignored for ld.

	* lexsup.c (ld_options): Add --[no-]map-whole-files for gold
	option compatibility.
2015-02-11 14:10:07 -08:00
H.J. Lu
45e813544e Output "warning:" or "error:" in plugin messages
When plugin generates LDPL_WARNING, LDPL_FATAL and LDPL_ERROR messages,
linker should display "warning:" or "error:" in plugin messages like
regular linker messages.

ld/

	* plugin.c (message): Output "warning:" for LDPL_WARNING. Output
	"error:" for LDPL_FATAL and LDPL_ERROR.
	* testplug2.c (parse_option): Handle fatal, error and warning.

ld/testsuite/

	* ld-plugin/plugin-27.d: New.
	* ld-plugin/plugin-28.d: Likewise.
	* ld-plugin/plugin-29.d: Likewise.
	* plugin.exp (plugin_tests): Add tests for LDPL_FATAL, LDPL_ERROR
	and LDPL_WARNING.
2015-02-11 14:00:51 -08:00