Commit Graph

92648 Commits

Author SHA1 Message Date
Stefan Stroe ca39c2f4dd Support --localedir, --datarootdir and --datadir
bfd/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
binutils/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
gas/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
gold/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
gprof/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
ld/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
opcodes/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
2017-11-29 20:10:52 +10:30
Nick Clifton ed9c7ee037 Use the record_alignment function when creating a .note section, in case the user has already created the section.
PR 22492
	* config/obj-elf.c (obj_elf_version): Use record_alignment rather
	than bfd_set_section_alignment.
2017-11-29 09:32:49 +00:00
Cary Coutant 5dc824ed42 Allow multiply-defined absolute symbols when they have the same value.
gold/
	* resolve.cc (Symbol_table::resolve): Allow multiply-defined absolute
	symbols when they have the same value.
2017-11-28 18:48:12 -08:00
Cary Coutant 8de0e07bf3 Allow multiple .eh_frame sections per object file.
LLVM is experimenting with placing .eh_frame sections in the COMDAT group
with the function's text. This triggers an internal error in gold because
we don't expect to see but one .eh_frame section in an object, and we use
a single data member in class Sized_relobj_file to keep track of that section.

This patch removes that data member, and instead checks the output section
and the input section offset to identify an optimized .eh_frame section.

gold/
	* object.h (class Sized_relobj_file): Remove discarded_eh_frame_shndx_.
	* object.cc (Sized_relobj_file::Sized_relobj_file): Likewise.
	(Sized_relobj_file::layout_eh_frame_section): Likewise.
	(Sized_relobj_file::do_count_local_symbols): Check for optimized
	.eh_frame section by other means.
	(Sized_relobj_file::compute_final_local_value_internal): Likewise.
2017-11-28 18:09:41 -08:00
GDB Administrator 144653ec15 Automatic date update in version.in 2017-11-29 00:00:23 +00:00
Nick Clifton b0029dce68 Prevent a memory exhaustion problem when trying to read in strings from a COFF binary with a corrupt string table size.
PR 22507
	* coffgen.c (_bfd_coff_read_string_table): Check for an excessive
	size of the external string table.
2017-11-28 18:00:29 +00:00
H.J. Lu ff174d3ffa gold: Add a newline at end of pr22266_a.c
This patch fixes the build with GCC 4.2:

gold/testsuite/pr22266_a.c:13:2: error: no newline at end of file

	* testsuite/pr22266_a.c: Add a newline at end of file.
2017-11-28 09:00:44 -08:00
H.J. Lu 82ed9683ec Properly handle note sections and segments
When dumping notes, get note alignment from either note section or note
segment.  To support notes generated by assemblers with

https://sourceware.org/bugzilla/show_bug.cgi?id=22492

we treate alignment as 4 bytes if it is less than 4.  Otherwise, we skip
notes if alignment isn't 4 nor 8 bytes.

We should call load_separate_debug_file only if e_shstrndx != SHN_UNDEF.

	PR binutils/22490
	* readelf.c (process_notes_at): Add an argument for note
	alignment.  If note alignment is less than 4, use 4 byte
	alignment.  Otherwise, skip notes if alignment isn't 4 nor
	8 bytes.
	(process_corefile_note_segments): Pass segment alignment to
	process_notes_at.
	(process_note_sections): Pass section alignment to
	process_notes_at.
	(process_object): Call load_separate_debug_file only if
	e_shstrndx != SHN_UNDEF.
2017-11-28 08:18:46 -08:00
Nick Clifton b23dc97fe2 Fix a memory access violation when attempting to parse a corrupt COFF binary with a relocation that points beyond the end of the section to be relocated.
PR 22506
	* reloc.c (reloc_offset_in_range): Rename to
	bfd_reloc_offset_in_range and export.
	(bfd_perform_relocation): Rename function invocation.
	(bfd_install_relocation): Likewise.
	(bfd_final_link_relocate): Likewise.
	* bfd-in2.h: Regenerate.
	* coff-arm.c (coff_arm_reloc): Use bfd_reloc_offset_in_range.
	* coff-i386.c (coff_i386_reloc): Likewise.
	* coff-i860.c (coff_i860_reloc): Likewise.
	* coff-m68k.c (mk68kcoff_common_addend_special_fn): Likewise.
	* coff-m88k.c (m88k_special_reloc): Likewise.
	* coff-mips.c (mips_reflo_reloc): Likewise.
	* coff-x86_64.c (coff_amd64_reloc): Likewise.
2017-11-28 13:20:31 +00:00
H.J. Lu 6c6bc89930 ELF: Don't set non_ir_ref_regular in check_relocs
Since elf_link_add_object_symbols sets non_ir_ref_regular now, there is
no need to set non_ir_ref_regular in check_relocs.

Tested on i686 and x86-64.

	* elf-m10300.c (mn10300_elf_check_relocs): Don't set
	non_ir_ref_regular.
	* elf32-arm.c (elf32_arm_check_relocs): Likewise.
	* elf32-bfin.c (bfin_check_relocs): Likewise.
	* elf32-cr16.c (cr16_elf_check_relocs): Likewise.
	* elf32-cris.c (cris_elf_check_relocs): Likewise.
	* elf32-d10v.c (elf32_d10v_check_relocs): Likewise.
	* elf32-dlx.c (elf32_dlx_check_relocs): Likewise.
	* elf32-fr30.c (fr30_elf_check_relocs): Likewise.
	* elf32-frv.c (elf32_frv_check_relocs): Likewise.
	* elf32-hppa.c (elf32_hppa_check_relocs): Likewise.
	* elf32-i370.c (i370_elf_check_relocs): Likewise.
	* elf32-i386.c (elf_i386_check_relocs): Likewise.
	* elf32-iq2000.c (iq2000_elf_check_relocs): Likewise.
	* elf32-lm32.c (lm32_elf_check_relocs): Likewise.
	* elf32-m32c.c (m32c_elf_check_relocs): Likewise.
	* elf32-m32r.c (m32r_elf_check_relocs): Likewise.
	* elf32-m68hc1x.c (elf32_m68hc11_check_relocs): Likewise.
	* elf32-m68k.c (elf_m68k_check_relocs): Likewise.
	* elf32-mcore.c (mcore_elf_check_relocs): Likewise.
	* elf32-metag.c (elf_metag_check_relocs): Likewise.
	* elf32-microblaze.c (microblaze_elf_check_relocs): Likewise.
	* elf32-moxie.c (moxie_elf_check_relocs): Likewise.
	* elf32-msp430.c (elf32_msp430_check_relocs): Likewise.
	* elf32-mt.c (mt_elf_check_relocs): Likewise.
	* elf32-nios2.c (nios2_elf32_check_relocs): Likewise.
	* elf32-or1k.c (or1k_elf_check_relocs): Likewise.
	* elf32-ppc.c (ppc_elf_check_relocs): Likewise.
	* elf32-rl78.c (rl78_elf_check_relocs): Likewise.
	* elf32-s390.c (elf_s390_check_relocs): Likewise.
	* elf32-score.c (s3_bfd_score_elf_check_relocs): Likewise.
	* elf32-score7.c (s7_bfd_score_elf_check_relocs): Likewise.
	* elf32-sh.c (sh_elf_check_relocs): Likewise.
	* elf32-tic6x.c (elf32_tic6x_check_relocs): Likewise.
	* elf32-tilepro.c (tilepro_elf_check_relocs): Likewise.
	* elf32-v850.c (v850_elf_check_relocs): Likewise.
	* elf32-vax.c (elf_vax_check_relocs): Likewise.
	* elf32-xstormy16.c (xstormy16_elf_check_relocs): Likewise.
	* elf32-xtensa.c (elf_xtensa_check_relocs): Likewise.
	* elf64-aarch64.c (elf64_aarch64_check_relocs): Likewise.
	* elf64-alpha.c (elf64_alpha_check_relocs): Likewise.
	* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
	* elf64-ia64-vms.c (elf64_ia64_check_relocs): Likewise.
	* elf64-mmix.c (mmix_elf_check_relocs): Likewise.
	* elf64-ppc.c (ppc64_elf_check_relocs): Likewise.
	* elf64-s390.c (elf_s390_check_relocs): Likewise.
	* elf64-sh64.c (sh_elf64_check_relocs): Likewise.
	* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Likewise.
	* elfnn-ia64.c (elfNN_ia64_check_relocs): Likewise.
	* elfnn-riscv.c (riscv_elf_check_relocs): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_check_relocs): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_check_relocs): Likewise.
	* elfxx-tilegx.c (tilegx_elf_check_relocs): Likewise.
2017-11-28 04:55:34 -08:00
Alan Modra 165f707ac8 PR22471, undefined reference to linker-defined symbols
This patch processes linker script assignment statements before ld
opens DT_NEEDED libraries, in order to define symbols like __bss_start
that might also be defined by a library, falsely triggering an error
about "DSO missing from command line".

The initial value won't be correct when assigning a symbol from dot,
and I make no attempt to handle all expressions.  For example, an
assignment like "_start_foo = ADDR (.foo)" isn't valid until sections
are laid out, so won't define _start_foo early.  What's here should be
enough for most common scripts, and hopefully won't perturb fragile
scripts.

bfd/
	PR 22471
	* elflink.c (_bfd_elf_merge_symbol): Allow weak symbols to override
	early passes over linker script symbols.
	* linker.c (_bfd_generic_link_add_one_symbol): Allow symbols to
	override early passes over linker script symbols.  Clear ldscript_def
	on symbol definitions.
ld/
	PR 22471
	* ldexp.c (struct definedness_hash_entry): Delete "by_script".  Make
	"iteration" an 8-bit field, and update mask in all uses.
	(definedness_newfunc): Don't init "by_script".
	(update_definedness): Test ldscript_def rather than by_script.
	(is_sym_value): Likewise.
	(fold_name <DEFINED>): Return a result for first phase.  Test
	ldscript_def.
	(fold_name <NAME>): Return a result for first phase.
	* ldlang.c (open_input_bfds): Process all assignments, not just
	defsym.
	(lang_process): Increment lang_statement_iteration before
	open_input_bfds.
	* testsuite/ld-mips-elf/tlsdyn-o32-1.d: Adjust for larger .dynsym.
	* testsuite/ld-mips-elf/tlsdyn-o32-1.got: Likewise.
	* testsuite/ld-mips-elf/tlsdyn-o32-2.d: Likewise.
	* testsuite/ld-mips-elf/tlsdyn-o32-2.got: Likewise.
	* testsuite/ld-mips-elf/tlsdyn-o32-3.d: Likewise.
	* testsuite/ld-mips-elf/tlsdyn-o32-3.got: Likewise.
2017-11-28 22:57:00 +10:30
Alan Modra cd5b2babea Copying symbol type in ld script assignments
There is a call to update_definedness between code that evaluates an
assignment expression value and code that transfers symbol
attributes.  When script assignment expressions contain DEFINED, that
can mean the wrong symbol type is copied.  This patch tracks symbols
read during expression evaluation, rather than examining the
expression and re-evaluating conditionals.  Not only does this
simplify the code, it also means ld can now copy symbol types in more
complex expressions.

An unfortunate side effect of copying symbol type for more complex
expressions affects mmix, which uses
 PROVIDE (Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : _start.));
in a default script.  So now _start or _start. symbol type may be
copied, losing the function type specially set up for Main.  This can
be avoided by making bfd_copy_link_hash_symbol_type do nothing for
mmix.

bfd/
	* elf64-mmix.c (bfd_elf64_bfd_copy_link_hash_symbol_type): Define.
ld/
	* ldexp.h (struct ldexp_control): Add "assign_src".
	* ldexp.c (fold_trinary): Save and restore assign_src around
	condition evaluation.
	(fold_name <NAME>): Set expld.assign_src.
	(try_copy_symbol_type): Delete.
	(exp_fold_tree_1): Set symbol type using expld.assign_src.
2017-11-28 22:56:59 +10:30
H.J. Lu a83ef4d139 ld: Set non_ir_ref_regular on symbols referenced in regular objects
If linker plugin is enabled, set non_ir_ref_regular on symbols referenced
in regular objects so that linker plugin will get the correct symbol
resolution.

bfd/

	PR ld/22502
	* elflink.c (_bfd_elf_merge_symbol): Also skip definition from
	an IR object.
	(elf_link_add_object_symbols): If linker plugin is enabled, set
	non_ir_ref_regular on symbols referenced in regular objects so
	that linker plugin will get the correct symbol resolution.

ld/

	PR ld/22502
	* testsuite/ld-plugin/lto.exp: Run PR ld/22502 test.
	* testsuite/ld-plugin/pr22502a.c: New file.
	* testsuite/ld-plugin/pr22502b.c: Likewise.
2017-11-28 03:48:44 -08:00
Jim Wilson f0531ed6a4 Compress loads/stores with implicit 0 offset.
gas/
	* config/tc-riscv.c (riscv_handle_implicit_zero_offset): New.
	(riscv_ip): Cases 'k', 'l', 'm', 'n', 'M', 'N', add call to
	riscv_handle_implicit_zero_offset.  At label load_store, replace
	existing code with call to riscv_handle_implicit_zero_offset.
	* testsuite/gas/riscv/c-ld.d, testsuite/gas/riscv/c-ld.s: New.
	* testsuite/gas/riscv/c-lw.d, testsuite/gas/riscv/c-lw.s: New.
	* testsuite/gas/riscv/riscv.exp: Run new tests.
2017-11-27 19:20:53 -08:00
Cary Coutant 033bfb739b Fix symbol values and relocation addends for relocatable links.
The fix for PR 19291 broke some other cases where -r is used with scripts,
as reported in PR 22266. The original fix for PR 22266 ended up breaking
many cases for REL targets, where the addends are stored in the section data,
and are not being adjusted properly.

The problem was basically that in a relocatable output file (ET_REL),
symbol values are supposed to be relative to the start address of their
section. Usually in a relocatable file, all sections start at 0, so the
failure to get this right is often irrelevant, but with a linker script,
we occasionally see an output section whose starting address is not 0,
and gold would occasionally write a symbol with its relocated value instead
of its section-relative value.

This patch reverts the recent fix for PR 22266 as well as my original fix
for PR 19291. The original fix moved the symbol value adjustment to
write_local_symbols, but neglected to undo a few places where the adjustment
was also being applied, resulting in an occasional double adjustment. The
more recent fix removed those other adjustments, but then failed to
re-account for the adjustment when rewriting the relocations on REL targets.

With the old attempts reverted, we now apply the symbol value adjustment to
the one case that had been missed (non-section symbols in merge sections).
But now we also need to account for the adjustment when rewriting the addends
for RELA relocations.

gold/
	PR gold/19291
	PR gold/22266
	* object.cc (Sized_relobj_file::compute_final_local_value_internal):
	Revert changes from 2017-11-08 patch.  Adjust symbol value in
	relocatable links for non-section symbols.
	(Sized_relobj_file::compute_final_local_value): Revert changes from
	2017-11-08 patch.
	(Sized_relobj_file::do_finalize_local_symbols): Likewise.
	(Sized_relobj_file::write_local_symbols): Revert changes from
	2015-11-25 patch.
	* object.h (Sized_relobj_file::compute_final_local_value_internal):
	Revert changes from 2017-11-08 patch.
	* powerpc.cc (Target_powerpc::relocate_relocs): Adjust addend for
	relocatable links.
	* target-reloc.h (relocate_relocs): Adjust addend for relocatable links.
	* testsuite/pr22266_a.c (hello): New function.
	* testsuite/pr22266_main.c (main): Add test for merge sections.
	* testsuite/pr22266_script.t: Add rule for .rodata.
2017-11-27 17:32:55 -08:00
GDB Administrator 57c1b6811a Automatic date update in version.in 2017-11-28 00:00:24 +00:00
Tom Tromey 18ca73470a Remove REMOTE_OBS
This removes REMOTE_OBS from the Makefile.  It is no longer needed, as
remote support is always built into gdb.  The relevant sources are now
added to COMMON_SFILES, where they are treated like other ordinary
sources.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (REMOTE_OBS): Remove.
	(SFILES): Remove remote sources.
	(COMMON_SFILES): Add remote sources.
	(ALLDEPFILES): Remove dcache.c.
2017-11-27 16:53:27 -07:00
Tom Tromey 66599a7dc0 Move target object files to target subdirectory
Move the object files corresponding to target/*.c to the target
subdirectory in the build tree.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_TARGET_SRCS, SUBDIR_TARGET_OBS): New
	variables.
	(SFILES): Use SUBDIR_TARGET_SRCS.
	(COMMON_OBS): Use SUBDIR_TARGET_OBS.  Remove waitstatus.o.
	(CONFIG_SRC_SUBDIR): Add target.
	(%.o): Remove target rule.
2017-11-27 16:53:27 -07:00
Tom Tromey 4f04fba813 Add missing files to COMMON_SFILES
While working on the previous patch, I found a few .o files whose
corresponding .c file was not mentioned in Makefile.in.  This patch
fixes the problem.  I pulled this out separately to make it simpler to
review.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (COMMON_OBS): Remove filename-seen-cache.o,
	registry.o, thread-fsm.o, debug.o.
	(COMMON_SFILES): Add filename-seen-cache.c, registry.c,
	thread-fsm.c, debug.c.
2017-11-27 16:53:26 -07:00
Tom Tromey b5adff3b5e Simplify COMMON_OBS by using list of sources
This introduces a new COMMON_SFILES variable, and then defines some of
COMMON_OBS in terms of this new variable.  This simpifies adding a new
ordinary source file.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (COMMON_SFILES): New.
	(SFILES): Move some entries to COMMON_SFILES.
	(COMMON_OBS): Use COMMON_SFILES.
2017-11-27 16:53:26 -07:00
Tom Tromey afa0a41159 Define YYOBJ in terms of YYFILES
Change YYOBJ to be defined in terms of YYFILES.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (YYFILES): Update comment.
	(YYOBJ): Redefine.
2017-11-27 16:53:25 -07:00
Tom Tromey 8fd8d003de Move python object files to python subdirectory
Move the object files corresponding to python/*.c to the python
subdirectory in the build tree.

Because special CFLAGS are passed just to Python compilations, this
patch also required the addition of a pattern rule to update
INTERNAL_CFLAGS for here.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_PYTHON_OBS): Redefine.
	(CONFIG_SRC_SUBDIR): Add python.
	(%.o): Remove python rule.
	(python/%.o): New rule.
	* configure: Rebuild.
	* configure.ac (CONFIG_OBS): Refer to python/python.o
2017-11-27 16:53:25 -07:00
Tom Tromey bd810fff78 Move guile object files to guile subdirectory
Move the object files corresponding to guile/*.c to the guile
subdirectory in the build tree.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac (CONFIG_OBS): Refer to guile/guile.o.
	* Makefile.in (SUBDIR_GUILE_OBS): Redefine.
	(CONFIG_SRC_SUBDIR): Add guile.
	(%.o): Remove guile rule.
2017-11-27 16:53:24 -07:00
Tom Tromey 75787ac19c Move unittests object files to unittests subdirectory
Move the object files corresponding to unittests/*.c to the unittests
subdirectory in the build tree.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_UNITTESTS_OBS): Redefine.
	(%.o): Remove unittests rule.
	(CONFIG_SRC_SUBDIR): Add unittests.
2017-11-27 16:53:24 -07:00
Tom Tromey 5c8a943144 Move tui object files to tui subdirectory
Move the object files corresponding to tui/*.c to the tui subdirectory
in the build tree.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_TUI_OBS): Redefine.
	(CONFIG_SRC_SUBDIR): Add tui.
	(%.o): Remove tui rule.
2017-11-27 16:53:23 -07:00
Tom Tromey a26aa30cc5 Move compile object files to compile subdirectory
Move the object files corresponding to compile/*.c to the compile
subdirectory in the build tree.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_GCC_COMPILE_OBS): Redefine.
	(%.o): Remove compile rule.
	(CONFIG_SRC_SUBDIR): Add compile.
2017-11-27 16:53:23 -07:00
Tom Tromey 6f3cdf9a3b Move mi objects to mi subdirectory
Move object files corresponding to mi/*.c to a subdirectory in the
build tree.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_MI_OBS): Redefine.
	(%.o): Remove mi rule.
	(CONFIG_SRC_SUBDIR): Add mi.
	(COMMON_OBS): Use mi/mi-common.o
2017-11-27 16:53:22 -07:00
Tom Tromey f06afa5336 Move cli object files to cli subdirectory
Following the "arch" move, this moves the object files corresponding
to the cli/*.c source files to the "cli" build directory.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SUBDIR_CLI_OBS): Redefine.
	(%.o): Remove cli rule.
	(CONFIG_SRC_SUBDIR): Add cli.
2017-11-27 16:53:22 -07:00
Tom Tromey b22c88c2ca A simpler way to make the "arch" build directory
This implements a simpler way to make the "arch" build directory --
namely, now it is done as an order-only dependency in the Makefile,
rather than being created when config.status is run.  This simpler
because it means that the build directories can be changed without
re-running autoconf.

ChangeLog
2017-11-27  Tom Tromey  <tom@tromey.com>

	* configure.ac (CONFIG_SRC_SUBDIR): Don't subst.
	* configure: Rebuild.
	* Makefile.in (CONFIG_SRC_SUBDIR): Redefine.
	(CONFIG_DEP_SUBDIR): New variable.
	(%.o): Add order-only dependency.
	($(CONFIG_DEP_SUBDIR)): New target.
2017-11-27 16:53:21 -07:00
Max Filippov 407e114084 gas: xtensa: speed up find_trampoline_seg
find_trampoline_seg takes noticeable time when assembling source with
many sections. Cache the result of the most recent search and check it
first. No functional changes.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (find_trampoline_seg): Add static variable
	that caches the result of the most recent search.
2017-11-27 15:16:22 -08:00
Max Filippov 148d638429 gas: xtensa: implement trampoline coalescing
There is a recurring pattern in assembly files generated by a compiler
where a lot of jumps in a function are going to the same place. When
these jumps are relaxed with trampolines the assembler generates a
separate jump thread from each source.
Create an index of trampoline jump targets for each segment and see if a
jump being relaxed goes to a location from that index, in which case
replace its target with a location of existing trampoline jump that
results in the shortest path to the original target.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (trampoline_chain_entry, trampoline_chain)
	(trampoline_chain_index): New structures.
	(trampoline_index): Add chain_index field.
	(xg_order_trampoline_chain_entry, xg_sort_trampoline_chain)
	(xg_find_chain_entry, xg_get_best_chain_entry)
	(xg_order_trampoline_chain, xg_get_trampoline_chain)
	(xg_find_best_eq_target, xg_add_location_to_chain)
	(xg_create_trampoline_chain, xg_get_single_symbol_slot): New
	functions.
	(xg_relax_fixups): Call xg_find_best_eq_target to adjust jump
	target to point to an existing jump. Call
	xg_create_trampoline_chain to create new jump target. Call
	xg_add_location_to_chain to add newly created trampoline jump
	to the corresponding chain.
	(add_jump_to_trampoline): Extract loop searching for a single
	slot with a symbol into a separate function, replace that code
	with a call to that function.
	(relax_frag_immed): Call xg_find_best_eq_target to adjust jump
	target to point to an existing jump.
	* testsuite/gas/xtensa/all.exp: Add trampoline-2 test.
	* testsuite/gas/xtensa/trampoline.d: Adjust absolute addresses
	as many duplicate trampoline chains are now coalesced.
	* testsuite/gas/xtensa/trampoline.s: Add _nop so that objdump
	stays in sync with instruction stream.
	* testsuite/gas/xtensa/trampoline-2.l: New test result file.
	* testsuite/gas/xtensa/trampoline-2.s: New test source file.
2017-11-27 15:15:46 -08:00
Max Filippov 76a493ab99 gas: xtensa: reuse trampoline placement code
There's almost exact copy of the trampoline placement code in the
search_trampolines function that is used for jumps generated for relaxed
branch instructions. Get rid of the duplication and reuse
xg_find_best_trampoline function for that.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (search_trampolines, get_best_trampoline):
	Remove definitions.
	(xg_find_best_trampoline_for_tinsn): New function.
	(relax_frag_immed): Replace call to get_best_trampoline with a
	call to xg_find_best_trampoline_for_tinsn.
	* testsuite/gas/xtensa/trampoline.d: Adjust absolute addresses
	as the placement of trampolines for relaxed branches has been
	changed.
2017-11-27 15:14:48 -08:00
Max Filippov fe6c2f1b64 gas: xtensa: rewrite xg_relax_trampoline
Replace linked list of trampoline frags with an ordered array, so that
instead of indexing fixups trampolines could be indexed. Keep each array
in the trampoline_seg structure, so there's no need to rebuild it for
every new processed segment. Don't run relaxation for each trampoline
frag, instead run it for each fixup in the current segment that needs
relaxation at the beginning of each relaxation pass. This way the
complexity of this process drops from about O(n^2 * m) to about
O(log n * m), where n is the number of trampoline frags and m is the
number of fixups that need relaxation in the segment.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (trampoline_index): New structure.
	(trampoline_seg): Replace trampoline list with trampoline index.
	(xg_find_trampoline, xg_add_trampoline_to_index)
	(xg_remove_trampoline_from_index, xg_add_trampoline_to_seg)
	(xg_is_trampoline_frag_full, xg_get_fulcrum)
	(xg_find_best_trampoline, xg_relax_fixup, xg_relax_fixups)
	(xg_is_relaxable_fixup): New functions.
	(J_MARGIN): New macro.
	(xtensa_create_trampoline_frag): Use xg_add_trampoline_to_seg
	instead of open-coded addition to the linked list.
	(dump_trampolines): Iterate through the trampoline_seg::index.
	(cached_fixupS, cached_fixup, fixup_cacheS, fixup_cache)
	(fixup_order, xtensa_make_cached_fixup)
	(xtensa_realloc_fixup_cache, xtensa_cache_relaxable_fixups)
	(xtensa_find_first_cached_fixup, xtensa_delete_cached_fixup)
	(xtensa_add_cached_fixup, check_and_update_trampolines): Remove
	definitions.
	(xg_relax_trampoline): Extract logic into separate functions,
	replace body with a call to xg_relax_fixups.
	(search_trampolines): Replace search in linked list with search
	in index. Change data type of address-tracking variables from
	int to offsetT. Replace abs with labs.
	(xg_append_jump): Finish the trampoline frag if it's full.
	(add_jump_to_trampoline): Remove trampoline frag from the index
	if the frag is full.
	* config/tc-xtensa.h (xtensa_frag_type): Remove next_trampoline.
	* testsuite/gas/xtensa/trampoline.d: Adjust absolute addresses
	as the placement of trampolines has slightly changed.
	* testsuite/gas/xtensa/trampoline.s: Add _nop so that objdump
	stays in sync with instruction stream.
2017-11-27 15:13:52 -08:00
Max Filippov 46888d7100 gas: xtensa: merge trampoline_frag into xtensa_frag_type
The split between fragS and trampoline_frag doesn't save much space, but
makes trampolines management much more awkward. Merge trampoline_frag
data into the xtensa_frag_type, which is a part of fragS. No functional
changes.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (init_trampoline_frag): Replace pointer to
	struct trampoline_frag parameter with pointer to fragS.
	(xg_append_jump): Remove jump_around parameter.
	(struct trampoline_frag): Remove.
	(struct trampoline_seg): Change type of trampoline_list from
	struct trampoline_frag to fragS.
	(xtensa_create_trampoline_frag): Don't allocate struct
	trampoline_frag. Initialize new fragS::tc_frag_data fields.
	(dump_trampolines, xg_relax_trampoline, search_trampolines)
	(get_best_trampoline, init_trampoline_frag)
	(add_jump_to_trampoline, relax_frag_immed): Replace pointer to
	struct trampoline_frag with a pointer to fragS.
	(xg_append_jump): Remove jump_around parameter, use
	fragS::tc_frag_data.jump_around_fix instead.
	(xg_relax_trampoline, init_trampoline_frag)
	(add_jump_to_trampoline): Don't pass jump_around parameter to
	xg_append_jump.
	* config/tc-xtensa.h (struct xtensa_frag_type): Add new fields:
	needs_jump_around, next_trampoline and jump_around_fix.
2017-11-27 15:13:00 -08:00
Max Filippov 1c2649f50f gas: xtensa: reuse find_trampoline_seg
xtensa_create_trampoline_frag has opencoded fragment equivalent to
find_trampoline_seg. Drop the fragment and use find_trampoline_seg
instead. No functional changes.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (find_trampoline_seg): Move above the first
	use.
	(xtensa_create_trampoline_frag): Replace trampoline seg search
	code with a call to find_trampoline_seg.
2017-11-27 15:12:21 -08:00
Max Filippov fec68fb168 gas: xtensa: extract jump assembling for trampolines
init_trampoline_frag, add_jump_to_trampoline and xg_relax_trampoline add
a jump to the end of a trampoline frag. Extract it into a separate
funciton and use it in all these places. No functional changes.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (xg_append_jump): New function.
	(xg_relax_trampoline, init_trampoline_frag)
	(add_jump_to_trampoline): Replace trampoline jump assembling
	code with a call to xg_append_jump.
2017-11-27 15:11:38 -08:00
Max Filippov 120bc8b8b9 gas: extract xg_relax_trampoline from xtensa_relax_frag
To make measurement and changes easier extract trampoline relaxation
function. No functional changes.

gas/
2017-11-27  Max Filippov  <jcmvbkbc@gmail.com>

	* config/tc-xtensa.c (xg_relax_trampoline): New function.
	(xtensa_relax_frag): Replace trampoline relaxation code with a
	call to xg_relax_trampoline.
2017-11-27 15:10:49 -08:00
Joel Brobecker 10329bb27f fix two issues in gdb.ada/mi_catch_ex.exp (re: "exception-message")
The following patch introduced a new feature related to Ada exception
catchpoints:

    commit e547c119d0
    Author: Joel Brobecker <brobecker@adacore.com>
    Date:   Fri Nov 24 17:09:42 2017 -0500
    Subject: (Ada) provide the exception message when hitting an exception catchpoint

Unfortunately, the patch left 2 errors in gdb.ada/mi_catch_ex.exp,
both inside the "continue_to_exception" function:

  1. The exception message on the console can include the exception
     message, and thus this patch adjust the expected output in
     the corresponding gdb_expect call to allow it;
     to allow it.

  2. There was a TCL syntax confusion in "$exception_name(..."
     that caused TCL to evaluate "exception_name as an array,
     rather than as a variable. This patch fixes this by escaping
     the '(' (and the corresponding closing parenthesis, for
     consistency).

gdb/testsuite/ChangeLog:

        * gdb.ada/mi_catch_ex.exp (continue_to_exception): Adjust
        expected output in gdb_expect call to allow the exception
        message to be present as well.  Fix syntax confusion to avoid
        TCL thinking that exception_name is an array.

Tested on x86_64-linux, with:

    DejaGnu version  1.6
    Expect version   5.45
    Tcl version      8.6
2017-11-27 11:39:45 -08:00
Szabolcs Nagy 6dda7875a8 [PR ld/22263] aarch64: Avoid dynamic TLS relocs in PIE
No dynamic relocs are needed for TLS defined in an executable, the
TP relative offset is known at link time.

Fixes
FAIL: Build pr22263-1

bfd/
	PR ld/22263
	* elfnn-aarch64.c (elfNN_aarch64_relocate_section): Use
	bfd_link_executable instead of bfd_link_pic for TLS.
	(elfNN_aarch64_allocate_dynrelocs): Likewise.
	(aarch64_can_relax_tls): Likewise.
2017-11-27 11:53:04 +00:00
Szabolcs Nagy a377ae2ad6 [PR ld/22269] aarch64: Handle local undefined weak symbols
With static pie linking undefined weak symbols are forced to resolve locally
to 0, so no GOT setup is needed in elfNN_aarch64_finish_dynamic_symbol,
which previously failed for these symbols.

The failure caused the unhelpful error message:
"ld: final link failed: Nonrepresentable section on output"

bfd/
	PR ld/22269
	* elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_symbol): Use
	UNDEFWEAK_NO_DYNAMIC_RELOC to avoid dynamic GOT relocs.
	(elfNN_aarch64_allocate_dynrelocs): Likewise.
2017-11-27 11:49:53 +00:00
Nick Clifton 64973b0ac4 Update the simplified Chinese translation of the messages in the opcodes library.
* po/zh_CN.po: Updated simplified Chinese translation.
2017-11-27 11:14:38 +00:00
Nick Clifton 4dff97b2ce Fix a seg-fault when displaying notes from a prorgam segment. Check for a NULL string section before attempting compute the name of a separate debug info file.
PR 22490
	* readelf.c (dump_section_as_bytes): Check for a NULL string
	section pointer.
	(process_notes_at): Compute the alignment to use if displaying
	notes from a segment.
2017-11-27 11:05:39 +00:00
Nick Clifton e3d4058216 When creating a .note section to contain a version note, set the section alignment to 4 bytes.
PR 22492
	* config/obj-elf.c (obj_elf_version): Set the alignment of the
	.note section.
2017-11-27 11:04:17 +00:00
Dominik Czarnota ee9a09e959 Update find command help and search memory docs
This patch updates the `find` command help and docs description to show
how to search for not null terminated strings when current language's
strings includes it.

gdb/ChangeLog:

	PR gdb/21945
	* findcmd.c (_initialize_mem_search): Update find command help
	text.

gdb/doc/ChangeLog:

	PR gdb/21945
	* gdb.texinfo (Search Memory): Update description and example
	about how to search a string without NULL terminator.
2017-11-26 22:42:19 -05:00
Simon Marchi e8e7d10c39 python: Fix memleak in do_start_initialization
While playing with valgrind, I noticed that with Python 3, the progname
variable in do_start_initialization is not being freed (concat returns a
malloc'ed string).  This patch uses unique_xmalloc_ptr to manage it.
With Python 2, we pass progname it directly to Py_SetProgramName, so it
should not be freed.  We therefore release it before passing it.

gdb/ChangeLog:

	* python/python.c (do_start_initialization): Change progname
	type to gdb::unique_xmalloc_ptr.  Release the pointer when using
	Python 2.
2017-11-26 19:32:47 -05:00
GDB Administrator 7db85adb3b Automatic date update in version.in 2017-11-27 00:00:27 +00:00
Tom Tromey 6a997029fb Add include guards to common/format.h
This adds include guards to common/format.h.

ChangeLog
2017-11-26  Tom Tromey  <tom@tromey.com>

	* common/format.h: Add include guards.
2017-11-26 12:02:40 -07:00
H.J. Lu 2b63c337d9 Rename argument name from link to xlink
This fixed the build with GCC 4.2:

cc1: warnings being treated as errors
binutils-gdb/binutils/dwarf.c: In function ‘load_separate_debug_info’:
binutils-gdb/binutils/dwarf.c:9650: warning: declaration of ‘link’ shadows a global declaration
/usr/include/unistd.h:757: warning: shadowed declaration is here

	* dwarf.c (load_separate_debug_info): Rename argument name from
	link to xlink.
2017-11-26 10:12:35 -08:00
Tom Tromey 41272101db Change maybe_disable_address_space_randomization to a class
This changes maybe_disable_address_space_randomization to be an RAII
class, rather than having it return a cleanup.

Regression tested by the buildbot.

ChangeLog
2017-11-26  Tom Tromey  <tom@tromey.com>

	* nat/linux-personality.h (class
	maybe_disable_address_space_randomization): New class.
	(maybe_disable_address_space_randomization): Don't declare
	function.
	* nat/linux-personality.c (restore_personality)
	(make_disable_asr_cleanup): Remove.
	(maybe_disable_address_space_randomization): Now a constructor.
	(~maybe_disable_address_space_randomization): New destructor.
	* linux-nat.c (linux_nat_create_inferior): Update.

gdbserver/ChangeLog
2017-11-26  Tom Tromey  <tom@tromey.com>

	* linux-low.c (linux_create_inferior): Update.
2017-11-26 10:42:15 -07:00
Tom Tromey 44287fd890 Removes a cleanup from gcore.c
This removes a cleanup from gcore.c, replacing it with
unique_xmalloc_ptr.

Regression tested by the buildbot.

ChangeLog
2017-11-26  Tom Tromey  <tom@tromey.com>

	* gcore.c (write_gcore_file_1): Use gdb::unique_xmalloc_ptr.
2017-11-26 10:41:13 -07:00