Reimport a patch to fix building gold on Cygwin64 systms: m.arena has size_t on Cygwin64 and thus errors out due to -Werror=format.

gold	* main.cc: Print m.arena as long long.

I just stumbled over this with 2.29.1 while building a cross-toolchain, on Cygwin64, but it's still the same for 2.30. m.arena has size_t on Cygwin64 and thus errors out due to -Werror=format.

gold
	* main.cc: Print m.arena as long long.

Remove `-Wshadow' compilation errors:

cc1: warnings being treated as errors
.../bfd/elflink.c: In function 'bfd_elf_final_link':
.../bfd/elflink.c:11722: error: declaration of 'remove' shadows a global declaration
/usr/include/stdio.h:154: error: shadowed declaration is here

which for versions of GCC before 4.8 prevent support for ELF targets
from being built.  See also GCC PR c/53066.

	bfd/
	* elflink.c (bfd_elf_final_link): Rename `remove' local variable
	to `remove_section'.

(cherry picked from commit 5270eddc)

Testing for the GCC version 5 or later isn't right, since C++ 11 support
wasn't enabled by default until later.  This patch tests the C++ standard
support directly instead of inferring it from the GCC version.

gold/
	* incremental.cc (Sized_incremental_binary::setup_readers): Use
	emplace_back for C++ 11 or later.

Use changequote to match "i[3-7]86-*-linux-*", instead of
"i3-786-*-linux-*".

	PR ld/23388
	* configure.ac: Use changequote for "i[3-7]86-*-linux-*".
	* configure: Regenerated.

(cherry picked from commit 872899f1)

There is no need to generate x86 ISA properties with empty bits in
linker output.

bfd/

	PR ld/23372
	* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Remove x86
	ISA properties with empty bits.

ld/

	PR ld/23372
	* testsuite/ld-i386/i386.exp: Run pr23372a and pr23372b.
	* testsuite/ld-i386/pr23372a.d: New file.
	* testsuite/ld-i386/pr23372a.s: Likewise.
	* testsuite/ld-i386/pr23372b.d: Likewise.
	* testsuite/ld-i386/pr23372b.s: Likewise.
	* testsuite/ld-i386/pr23372c.s: Likewise.
	* testsuite/ld-x86-64/pr23372a-x32.d: Likewise.
	* testsuite/ld-x86-64/pr23372a.d: Likewise.
	* testsuite/ld-x86-64/pr23372a.s: Likewise.
	* testsuite/ld-x86-64/pr23372b-x32.d: Likewise.
	* testsuite/ld-x86-64/pr23372b.d: Likewise.
	* testsuite/ld-x86-64/pr23372b.s: Likewise.
	* testsuite/ld-x86-64/pr23372c.s: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run pr23372a, pr23372a-x32,
	pr23372b and pr23372b-x32.

(cherry picked from commit 56ad703d)

Fixes a number of build errors like the following
.../elf32-arm.c: In function 'elf32_arm_nabi_write_core_note':
.../elf32-arm.c:2177: error: #pragma GCC diagnostic not allowed inside functions
.../elf32-arm.c:2186: error: #pragma GCC diagnostic not allowed inside functions
See the comment in diagnostics.h.

include/
	* diagnostics.h: Comment on macro usage.
bfd/
	* elf32-arm.c (elf32_arm_nabi_write_core_note): Don't use
	DIAGNOTIC_PUSH and DIAGNOSTIC_POP unconditionally.
	* elf32-ppc.c (ppc_elf_write_core_note): Likewise.
	* elf32-s390.c (elf_s390_write_core_note): Likewise.
	* elf64-ppc.c (ppc64_elf_write_core_note): Likewise.
	* elf64-s390.c (elf_s390_write_core_note): Likewise.
	* elfxx-aarch64.c (_bfd_aarch64_elf_write_core_note): Likewise.

(cherry picked from commit fe75810f)

elfcpp/
	* powerpc.h (Tag_GNU_Power_ABI_FP): Define.
	(Tag_GNU_Power_ABI_Vector, Tag_GNU_Power_ABI_Struct_Return): Define.
gold/
	* powerpc.cc: Include attributes.h.
	(Powerpc_relobj::attributes_section_data_): New variable, with
	accessor and associated constructor and destructor support.
	(Powerpc_dynobj::attributes_section_data_): Likewise.
	(Powerpc_relobj::do_read_symbols): Stash SHT_GNU_ATTRIBUTES section
	contents in attributes_section_data_.
	(Powerpc_dynobj::do_read_symbols): Likewise.
	(Target_powerpc): Add attributes_section_data_, last_fp_, last_ld_,
	last_vec_, and last_struct_ vars.
	(Target_powerpc::merge_object_attributes): New function.
	(Target_powerpc::do_finalize_sections): Iterate over input objects
	merging attributes.  Create output attributes section.

(cherry picked from commit 724436fc)

	bfd/
	* config.bfd (riscv32*-*-*): Renamed from riscv32-*-*.
	(riscv64*-*-*): Likewise.
	(riscv-*-*): Add as an alias for riscv32*-*-*.

	ld/
	* configure.tgt (riscv-*-*): Add as an alias for riscv32*-*-*.

(cherry picked from commit bb11866d)

The disassembly mask for ldarh incorrectly didn't mask out bit 20 which
is part of the SBO part of the instruction and shouldn't be considered input.

This fixes the wrong bit fixing the disassembly of instructions to
ldarh and makes the behavior consistent.

opcodes/

	PR binutils/23242
	* aarch64-tbl.h (ldarh): Fix disassembly mask.

(cherry picked from commit f311ba7e

)
Signed-off-by: Tamar Christina <tamar.christina@arm.com>

The previous constraints were based on information already in opcodes and it
seems that a few of them were wrong.  I have now hand verified the ones changed
by the previous patch and corrected where needed.

This prevents a warning to be issued when one shouldn't be.

opcodes/

	PR binutils/23369
	* aarch64-opc.c (aarch64_sys_regs): Make read/write csselr_el1,
	vsesr_el2, osdtrrx_el1, osdtrtx_el1, pmsidr_el1.

gas/testsuite/

	PR binutils/23369
	* gas/aarch64/msr.d (csselr_el1,
	vsesr_el2, osdtrrx_el1, osdtrtx_el1, pmsidr_el1): New.
	* gas/aarch64/msr.s: Likewise.

(cherry picked from commit cba05feb

)
Signed-off-by: Tamar Christina <tamar.christina@arm.com>

	* write.c (maybe_generate_build_notes): Bias reloc offsets by the
	number of notes already generated.

	* config.sub: Sync with upstream version 2018-07-03.

And report the two input files that are incompatible rather than
reporting that an input file is incompatible with the output.

bfd/
	* elf-bfd.h (_bfd_elf_ppc_merge_fp_attributes): Update prototype.
	* elf32-ppc.c (_bfd_elf_ppc_merge_fp_attributes): Return error
	on mismatch.  Remove "warning: " from messages.  Track last bfd
	used to set tags.
	(ppc_elf_merge_obj_attributes): Likewise.  Handle status from
	_bfd_elf_ppc_merge_fp_attributes.
	* elf64-ppc.c (ppc64_elf_merge_private_bfd_data): Handle status
	from _bfd_elf_ppc_merge_fp_attributes.
ld/
	* testsuite/ld-powerpc/attr-gnu-4-12.d: Update expected output.
	* testsuite/ld-powerpc/attr-gnu-4-13.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-21.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-23.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-31.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-32.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-8-23.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-12-21.d: Likewise.

(cherry picked from commit 4a91d0ba)

Setting SEC_EXCLUDE for empty .gnu.attributes is too late in the link
process for the linker to remove the section.  That must be done in
bfd_elf_final_link, as we do for removed group sections.

	* elflink.c (bfd_elf_final_link): Remove zero size .gnu.attributes
	sections.

(cherry picked from commit b8a6ced7)

.gnu.attributes entries from linker input files are merged to the
output file, the output having the union of compatible input
attributes.  Incompatible attributes generally cause a linker error
and no output.  However in some cases only a warning is emitted, and
one of the incompatible input attributes is passed on to the output.

PowerPC tends to emit warnings rather than errors, and the output
takes the first input attribute.  For example, if we have two input
files with Tag_GNU_Power_ABI_FP, the first with a value signifying
"double-precision hard float, IBM long double", the second with a
value signifying "double-precision hard float, IEEE long double",
we'll get a warning about incompatible long double types and the
output will say "double-precision hard float, IBM long double".
The output attribute of course isn't correct.  It would be correct to
specify "IBM and IEEE long double", but we don't have a way to
represent that currently.  While it would be possible to extend the
encoding, there isn't much gain in doing so.  A shared library
providing support for both long double types should link against
objects using either long double type without warning or error.  That
is what you'd get if such a shared library had no Tag_GNU_Power_ABI_FP
attribute.

So this patch provides a way for the backend to omit .gnu.attributes
tags from the output.

	* elf-bfd.h (ATTR_TYPE_FLAG_ERROR, ATTR_TYPE_HAS_ERROR): Define.
	* elf-attrs.c (is_default_attr): Handle ATTR_TYPE_HAS_ERROR.
	* elf32-ppc.c (_bfd_elf_ppc_merge_fp_attributes): Use
	ATTR_TYPE_FLAG_INT_VAL.  Set ATTR_TYPE_HAS_ERROR on finding
	incompatible attribute.
	(ppc_elf_merge_obj_attributes): Likewise.  Return
	_bfd_elf_merge_object_attributes result.
	* elf64-ppc.c (ppc64_elf_merge_private_bfd_data): Return
	_bfd_elf_merge_object_attributes result.

(cherry picked from commit 8d2c8c3d)

	* config.guess: Sync with upstream version 2018-06-26.
	* config.sub: Sync with upstream version 2018-07-02.

Set non_ir_ref_regular to TRUE for symbols forced into the output file
so that they won't be removed by garbage collection with LTO.

	PR ld/23309
	* ldlang.c (insert_undefined): Set non_ir_ref_regular to TRUE.
	* plugin.c (is_visible_from_outside): Don't scan entry_symbol.
	* testsuite/ld-plugin/pr23309.c: New file.
	* testsuite/ld-plugin/pr23309.d: Likewise.

(cherry picked from commit 94d401b8)

Update Russian, Bulgarian and Brazilian Portuguese translations for various components of the binutils.

bfd,gas	* po/ru.po: Updated Russian translation.

ld	* po/bg.po: Updated Bulgarian translation.
	* po/pt_BR.po: Updated Brazilian Portuguese translation.

binutils* po/bg.po: Updated Bulgarian translation.

Check DEFAULT_LD_Z_SEPARATE_CODE to display default for -z separate-code.

	PR ld/23358
	* lexsup.c (elf_shlib_list_options): Properly display default
	for -z separate-code.

(cherry picked from commit b14b7ff1)

Since bfd.h is an installed header, also install diagnostics.h.

	* Makefile.am (bfdinclude_HEADERS): Add $(INCDIR)/diagnostics.h.
	* Makefile.in: Regenerated.

(cherry picked from commit db40acb0)

We need to clear the R_X86_64_converted_reloc_bit bit after setting it
to avoid leaking it out by --emit-relocs.

bfd/

	PR ld/23324
	* elf64-x86-64.c (elf_x86_64_relocate_section): Clear the
	R_X86_64_converted_reloc_bit bit.

ld/

	PR ld/23324
	* testsuite/ld-x86-64/pr23324.s: New file.
	* testsuite/ld-x86-64/pr23324a.d: Likewise.
	* testsuite/ld-x86-64/pr23324b.d: Likewise.

(cherry picked from commit b638b5d5)

A recent case in golang highlighted that gas wasn't warning on these
unpredictable cases in the architecture. Fixed thusly.

I need to audit gcc to make sure we have early clobbers on the
patterns but that's a separate patch.

Tested aarch64-none-elf and gas

Ok ?

Ramana

2018-06-29 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>

        * config/tc-aarch64.c (warn_unpredictable_ldst): Add
        unpredictable cases for ldxp, stlxrb, stlxrh, stlxr.  *
        testsuite/gas/aarch64/diagnostic.s: New tests.  *
        testsuite/gas/aarch64/diagnostic.l: Adjust.

Some instructions in Armv8-a place a limitation on FP16 registers that can be
used as the register from which to select an element from.

e.g. fmla restricts Rm to 4 bits when using an FP16 register.  This restriction
does not apply for all instructions, e.g. fcmla does not have this restriction
as it gets an extra bit from the M field.

Unfortunately, this restriction to S_H was added for all _Em operands before,
meaning for a large number of instructions you couldn't use the full register
file.

This fixes the issue by introducing a new operand _Em16 which applies this
restriction only when paired with S_H and leaves the _Em and the other
qualifiers for _Em16 unbounded (i.e. using the full 5 bit range).

Also the patch updates all instructions that should be affected by this.

opcodes/

	PR binutils/23192
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis-2.c: Likewise.
	* aarch64-opc-2.c: Likewise.
	* aarch64-dis.c (aarch64_ext_reglane): Add AARCH64_OPND_Em16 constraint.
	* aarch64-opc.c (operand_general_constraint_met_p,
	aarch64_print_operand): Likewise.
	* aarch64-tbl.h (aarch64_opcode_table): Change Em to Em16 for smlal,
	smlal2, fmla, fmls, fmul, fmulx, sqrdmlah, sqrdlsh, fmlal, fmlsl,
	fmlal2, fmlsl2.
	(AARCH64_OPERANDS): Add Em2.

gas/

	PR binutils/23192
	* config/tc-aarch64.c (process_omitted_operand, parse_operands): Add
	AARCH64_OPND_Em16
	* testsuite/gas/aarch64/advsimd-armv8_3.s: Expand tests to cover upper
	16 registers.
	* testsuite/gas/aarch64/advsimd-armv8_3.d: Likewise.
	* testsuite/gas/aarch64/advsimd-compnum.s: Likewise.
	* testsuite/gas/aarch64/advsimd-compnum.d: Likewise.
	* testsuite/gas/aarch64/sve.d: Likewise.

include/

	PR binutils/23192
	*opcode/aarch64.h (aarch64_opnd): Add AARCH64_OPND_Em16.

(cherry picked from commit 369c9167

)
Signed-off-by: Tamar Christina <tamar.christina@arm.com>

With the update to newer autotools, some gas object files are now
built in config/, breaking xtensa-elf and ia64-vms.  This patch fixes
the dependencies.

	* configure.ac: Specify extra_objects with leading "config/"
	for xtensa-relax.o and te-vms.o.  Use case statements to unique
	extra_objects.  Formatting.
	* configure: Regenerate.

(cherry picked from commit e11078da)