deliverable/binutils-gdb.git
5 years agoAArch64: Read pauth registers
Alan Hayward [Fri, 22 Mar 2019 10:31:02 +0000 (10:31 +0000)] 
AArch64: Read pauth registers

Initialise the pauth registers when creating a target description, and store
the regnum of the first pauth register.

Use ptrace to read the registers in the pauth feature.

Do not allow the registers to be written.

gdb/ChangeLog:

* aarch64-linux-nat.c (fetch_pauth_masks_from_thread): New
function.
(aarch64_linux_nat_target::fetch_registers): Read pauth registers.
* aarch64-tdep.c (aarch64_cannot_store_register): New function.
(aarch64_gdbarch_init): Add puth registers.
* aarch64-tdep.h (struct gdbarch_tdep): Add pauth features.
* arch/aarch64.h (AARCH64_PAUTH_DMASK_REGNUM): New define.
(AARCH64_PAUTH_CMASK_REGNUM): Likewise.

5 years agoAArch64: Use HWCAP to detect pauth feature
Alan Hayward [Fri, 22 Mar 2019 10:00:28 +0000 (10:00 +0000)] 
AArch64: Use HWCAP to detect pauth feature

Add aarch64_get_hwcap functions for reading the HWCAP.
From this extract the PACA value and use this to enable pauth.

gdb/ChangeLog:

* aarch64-linux-nat.c
(aarch64_linux_nat_target::read_description): Read PACA hwcap.
* aarch64-linux-tdep.c
(aarch64_linux_core_read_description): Likewise.
(aarch64_linux_get_hwcap): New function.
* aarch64-linux-tdep.h (AARCH64_HWCAP_PACA): New define.
(aarch64_linux_get_hwcap): New declaration.

gdb/gdbserver/ChangeLog:

* linux-aarch64-low.c (AARCH64_HWCAP_PACA): New define.
(aarch64_get_hwcap): New function.
(aarch64_arch_setup): Read APIA hwcap.

5 years agoAArch64: Add pointer authentication feature
Alan Hayward [Fri, 22 Mar 2019 09:58:42 +0000 (09:58 +0000)] 
AArch64: Add pointer authentication feature

Pointer Authentication is a new feature in AArch64 v8.3-a. When enabled in
the compiler, function return addresses will be mangled by the kernel.

Add register description xml and wire up to aarch64_linux_read_description.
This description includes the two pauth user registers.

Nothing yet uses the feature - that is added in later patches.

gdb/ChangeLog:

* aarch64-linux-nat.c
(aarch64_linux_nat_target::read_description): Add pauth param.
* aarch64-linux-tdep.c
(aarch64_linux_core_read_description): Likewise.
* aarch64-tdep.c (struct target_desc): Add in pauth.
(aarch64_read_description): Add pauth param.
(aarch64_gdbarch_init): Likewise.
* aarch64-tdep.h (aarch64_read_description): Likewise.
* arch/aarch64.c (aarch64_create_target_description): Likewise.
* arch/aarch64.h (aarch64_create_target_description): Likewise.
* features/Makefile: Add new files.
* features/aarch64-pauth.c: New file.
* features/aarch64-pauth.xml: New file.

gdb/doc/ChangeLog:

* gdb.texinfo: Describe pauth feature.

gdb/gdbserver/ChangeLog:

* linux-aarch64-ipa.c (get_ipa_tdesc): Add pauth param.
(initialize_low_tracepoint): Likewise.
* linux-aarch64-low.c (aarch64_arch_setup): Likewise.
* linux-aarch64-tdesc-selftest.c (aarch64_tdesc_test): Likewise.
* linux-aarch64-tdesc.c (struct target_desc): Likewise.
(aarch64_linux_read_description): Likewise.
* linux-aarch64-tdesc.h (aarch64_linux_read_description): Likewise.

5 years agoTestsuite: Ensure pie is disabled on some tests
Alan Hayward [Wed, 13 Feb 2019 12:28:38 +0000 (12:28 +0000)] 
Testsuite: Ensure pie is disabled on some tests

Recent versions of Ubuntu and Debian default GCC to enable pie.

In dump.exp, pie will causes addresses to be out of range for IHEX.

In break-interp.exp, pie is explicitly set for some tests and assumed
to be disabled for the remainder.

Ensure pie is disabled for these tests when required.

In addition, add a pie option to gdb_compile to match the nopie option
and simplify use.

gdb/testsuite/ChangeLog:

* README: Add pie options.
* gdb.base/break-interp.exp: Ensure pie is disabled.
* gdb.base/dump.exp: Likewise.
* lib/gdb.exp (gdb_compile): Add pie option.

5 years agoAutomatic date update in version.in
GDB Administrator [Fri, 22 Mar 2019 00:00:37 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoRISC-V: Fix linker crash in section symbol check.
Jim Wilson [Thu, 21 Mar 2019 22:08:48 +0000 (15:08 -0700)] 
RISC-V: Fix linker crash in section symbol check.

sym is only set for local symbols.  h is only set for global symbols.  Gas
won't let me create a global section symbol, but bfd appears to have some
support for that, and I can't rule out that other assemblers might do this.
So we need to support both, and verify sym and h are non-NULL before using.

bfd/
PR 24365
* elfnn-riscv.c (riscv_elf_relocate_section): For STT_SECTION check,
verify sym non-NULL before using.  Add identical check using h.

5 years ago[BFD, AArch64, x86] Improve warning for --force-bti
Sudakshina Das [Thu, 21 Mar 2019 16:20:21 +0000 (16:20 +0000)] 
[BFD, AArch64, x86] Improve warning for --force-bti

The AArch64 linker option to turn on BTI (--force-bti) warns in case there are
input objects which have a missing GNU NOTE section for BTI. This patch is trying
to improve the warnings that come out.

In order to do so, I propose adding a new argument to elf_merge_gnu_properties
and the backend function merge_gnu_properties. This new argument makes sure
that we now pass both the objects along with the properties to which they
belong to. The x86 backend function has also been updated to match this
change.

*** bfd/ChangeLog ***

2019-03-21  Sudakshina Das  <sudi.das@arm.com>

* elf-bfd.h (struct elf_backend_data): Add argument to
merge_gnu_properties.
* elf-properties.c (elf_merge_gnu_properties): Add argument to
itself and while calling bed->merge_gnu_properties.
(elf_merge_gnu_property_list): Update the calls for
elf_merge_gnu_properties.
* elfnn-aarch64.c (elfNN_aarch64_merge_gnu_properties): Update handling
of --force-bti warning and add argument.
* elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Add
warning.
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Add argument.
* elfxx-x86.h (_bfd_x86_elf_merge_gnu_properties): Likewise in
declaration.

*** ld/ChangeLog ***

2019-03-21  Sudakshina Das  <sudi.das@arm.com>

* testsuite/ld-aarch64/aarch64-elf.exp: Add new test.
* testsuite/ld-aarch64/bti-plt-1.s: Add .ifdef for PAC note section.
* testsuite/ld-aarch64/bti-plt-6.d: Update warning.
* testsuite/ld-aarch64/bti-plt-7.d: Likewise.
* testsuite/ld-aarch64/bti-warn.d: New test.

5 years agoAdjust pr14156 test for m68hc1*
Alan Modra [Thu, 21 Mar 2019 05:31:08 +0000 (16:01 +1030)] 
Adjust pr14156 test for m68hc1*

The test section alignment is unnecessarily high, overflowing the
m68hc11 page used by .init code.

* testsuite/ld-elf/fini2.s: Reduce alignment.
* testsuite/ld-elf/fini3.s: Likewise.
* testsuite/ld-elf/finin.s: Likewise.
* testsuite/ld-elf/init2.s: Likewise.
* testsuite/ld-elf/init3.s: Likewise.
* testsuite/ld-elf/initn.s: Likewise.
* testsuite/ld-elf/pr14156a.d: Don't xfail m68hc1*-* or xgate-*.
* testsuite/ld-elf/pr14156b.d: Don't xfail xgate-*.

5 years agoAdd SORT_NONE to .init and .fini in scripts
Alan Modra [Thu, 21 Mar 2019 04:28:35 +0000 (14:58 +1030)] 
Add SORT_NONE to .init and .fini in scripts

The special case for .init and .fini in update_wild_statements is
ineffective for .init or .fini wildcards inside other output sections.
The special case needs to be on the wildcard, not the output section.
This patch is belt and braces, both fixing update_wild_statements and
the scripts.

* scripttempl/alpha.sc, * scripttempl/armbpabi.sc,
* scripttempl/crisaout.sc, * scripttempl/elf32cr16.sc,
* scripttempl/elf32crx.sc, * scripttempl/elf32xc16x.sc,
* scripttempl/elf32xc16xl.sc, * scripttempl/elf32xc16xs.sc,
* scripttempl/elf64hppa.sc, * scripttempl/elf_chaos.sc,
* scripttempl/elfarc.sc, * scripttempl/elfarcv2.sc,
* scripttempl/elfd30v.sc, * scripttempl/elfm68hc11.sc,
* scripttempl/elfm68hc12.sc, * scripttempl/elfm9s12z.sc,
* scripttempl/elfmicroblaze.sc, * scripttempl/elfxgate.sc,
* scripttempl/elfxtensa.sc, * scripttempl/epiphany_4x4.sc,
* scripttempl/ft32.sc, * scripttempl/i386beos.sc,
* scripttempl/iq2000.sc, * scripttempl/mcorepe.sc,
* scripttempl/mep.sc, * scripttempl/mips.sc, * scripttempl/moxie.sc,
* scripttempl/pe.sc, * scripttempl/pep.sc, * scripttempl/ppcpe.sc,
* scripttempl/tic4xcoff.sc, * scripttempl/tic80coff.sc,
* scripttempl/v850.sc, * scripttempl/v850_rh850.sc,
* scripttempl/visium.sc, * scripttempl/xstormy16.sc: Add KEEP and
SORT_NONE to .init and .fini wildcards.
* scripttempl/elf32xc16x.sc,
* scripttempl/elf32xc16xl.sc,
* scripttempl/elf32xc16xs.sc: Add .fini wildcard.
* scripttempl/elf_chaos.sc: Add .init output section.
* scripttempl/elfd30v.sc: Remove duplicate .init.
* scripttempl/elfm68hc11.sc, * scripttempl/elfm68hc12.sc,
* scripttempl/elfm9s12z.sc, * scripttempl/elfxgate.sc: Remove
duplicate .init, and add .fini wildcard.
* scripttempl/ppcpe.sc (INIT, FINI): Delete.
* ldlang.c (update_wild_statements): Special case .init and
.fini in the wildcard, not the output section.

5 years agoAutomatic date update in version.in
GDB Administrator [Thu, 21 Mar 2019 00:00:28 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agolm32-linux ld testsuite fails
Alan Modra [Wed, 20 Mar 2019 22:09:18 +0000 (08:39 +1030)] 
lm32-linux ld testsuite fails

A number of the fails are due to ld supporting the creation of shared
libraries but not allowing linking against them without using an
option like -Bdynamic.
FAIL: Symbol export class test (final shared object)
FAIL: PROVIDE_HIDDEN test 4
FAIL: PROVIDE_HIDDEN test 6
FAIL: PROVIDE_HIDDEN test 10
FAIL: PROVIDE_HIDDEN test 12
FAIL: Build pr22471b.so
FAIL: Build pr22649-2b.so
FAIL: Build pr22649-2d.so
FAIL: PR ld/20828 dynamic symbols with section GC (plain)
FAIL: PR ld/20828 dynamic symbols with section GC (version script)
FAIL: PR ld/20828 dynamic symbols with section GC (versioned)
FAIL: PR ld/21233 dynamic symbols with section GC (--undefined)
FAIL: PR ld/21233 dynamic symbols with section GC (--require-defined)
FAIL: PR ld/21233 dynamic symbols with section GC (EXTERN)
FAIL: Build pr22150
FAIL: PR ld/14170
FAIL: Link using broken linker script
FAIL: pr17068 link --as-needed lib in group
FAIL: ld-gc/pr20022

* emulparams/elf32lm32fd.sh (DYNAMIC_LINK): Undef.

5 years agoRemove strip_underscore from struct emulation
Alan Modra [Wed, 20 Mar 2019 08:05:16 +0000 (18:35 +1030)] 
Remove strip_underscore from struct emulation

This field is unused.  I would have liked to also remove
leading_underscore and fake_label_name but in an i386-elf/coff/aout
multi-obj setup those fields are used to select a different
fake_label_name for aout.

* emul.h (struct emulation): Delete strip_underscore.
* emul-target.h (emul_strip_underscore): Don't define.
(emul_struct_name): Update initialization.

5 years agoTeach a few targets to resolve BFD_RELOC_8
Alan Modra [Tue, 19 Mar 2019 22:50:55 +0000 (09:20 +1030)] 
Teach a few targets to resolve BFD_RELOC_8

and tidy "forward" test.  I've removed some checks in d30v
md_apply_fix that have no business being there.  Any symbol problems
will be caught later in tc_gen_reloc, and overflow checking is done in
gas/write.c.

* config/tc-d10v.c (md_apply_fix): Apply BFD_RELOC_8.
* config/tc-pdp11.c (md_apply_fix): Likewise.
* config/tc-d30v.c (md_apply_fix): Don't emit errors for BFD_RELOC_8,
BFD_RELOC_16, and BFD_RELOC_64.
* testsuite/gas/all/gas.exp: Move target exclusions for forward
test, but not cr16, to..
* testsuite/gas/all/forward.d: ..here, with explanation.  Remove
d10v, d30v, and pdp11 xfails.

5 years agoFix some dlx fails
Alan Modra [Tue, 19 Mar 2019 05:11:58 +0000 (15:41 +1030)] 
Fix some dlx fails

Generic linker ELF targets using CREATE_OBJECT_SYMBOLS in their
scripts run into a problem.  The file symbols are created by
_bfd_generic_link_output_symbols in each object file, in the section
corresponding to the CREATE_OBJECT_SYMBOLS section, typically .text.
If it so happens that the output .text section is stripped due to
being empty, then elf.c:assign_section_numbers won't assign an ELF
section number and swap_out_syms will report "unable to find
equivalent output section" for the object symbols.  Fix this by
always keeping an output section with CREATE_OBJECT_SYMBOLS.

* ldlang.c (lang_size_sections_1): Set SEC_KEEP on
create_object_symbols_section.
* testsuite/ld-elf/pr22319.d: Don't xfail dlx.

5 years ago[BFD, AArch64] Define elf_backend_fixup_gnu_properties in AArch64
Sudakshina Das [Wed, 20 Mar 2019 18:00:07 +0000 (18:00 +0000)] 
[BFD, AArch64] Define elf_backend_fixup_gnu_properties in AArch64

This patch add support for elf_backend_fixup_gnu_properties for GNU
property support for AArch64. The new AArch64 specific definition
_bfd_aarch64_elf_link_fixup_gnu_properties goes through the property
list to find AArch64 type properties and removes the properties that
are marked as "property_remove".

*** bfd/ChangeLog ***

2019-03-20  Sudakshina Das  <sudi.das@arm.com>

* elfxx-aarch64.c (_bfd_aarch64_elf_link_fixup_gnu_properties): Define.
* elfxx-aarch64.h (_bfd_aarch64_elf_link_fixup_gnu_properties): Declare.
(elf_backend_fixup_gnu_properties): Define for AArch64.

5 years agoUse @defvar to document gdb.pretty_printers
Tom Tromey [Wed, 20 Mar 2019 14:12:38 +0000 (08:12 -0600)] 
Use @defvar to document gdb.pretty_printers

While referencing the manual, I noticed that gdb.pretty_printers
wasn't documented using @defvar.  This made it more difficult to find
in the info pages.  This patch adds the @defvar and also an
introductory paragraph in that node.

gdb/doc/ChangeLog
2019-03-20  Tom Tromey  <tromey@adacore.com>

* python.texi (Selecting Pretty-Printers): Use @defvar for
gdb.pretty_printers.

5 years agoMerge handle_inferior_event and handle_inferior_event_1
Tom Tromey [Wed, 20 Mar 2019 13:57:09 +0000 (07:57 -0600)] 
Merge handle_inferior_event and handle_inferior_event_1

I noticed that handle_inferior_event is just a small wrapper that
frees the value chain.  This patch replaces it with a
scoped_value_mark, reducing the number of lines of code here.

Regression tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-03-20  Tom Tromey  <tromey@adacore.com>

* infrun.c (handle_inferior_event): Rename from
handle_inferior_event_1.  Create a scoped_value_mark.
(handle_inferior_event): Remove.

5 years agoAutomatic date update in version.in
GDB Administrator [Wed, 20 Mar 2019 00:00:30 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoDon't show "display"s twice in MI
Tom Tromey [Tue, 12 Mar 2019 18:56:01 +0000 (12:56 -0600)] 
Don't show "display"s twice in MI

If you run "gdb -i=mi2" and set a "display", then when "next"ing the
displays will be shown twice:

    ~"1: x = 23\n"
    ~"7\t  printf(\"%d\\n\", x);\n"
    ~"1: x = 23\n"
    *stopped,reason="end-stepping-range",frame={addr="0x0000000000400565",func="main",args=[],file="q.c",fullname="/tmp/q.c",line="7"},thread-id="1",stopped-threads="all",core="1"

The immediate cause of this is this code in mi_on_normal_stop_1:

      print_stop_event (mi_uiout);

      console_interp = interp_lookup (current_ui, INTERP_CONSOLE);
      if (should_print_stop_to_console (console_interp, tp))
print_stop_event (mi->cli_uiout);

... which obviously prints the stop twice.

However, I think the first call to print_stop_event is intended just
to emit the MI *stopped notification, which explains why the source
line does not show up two times.

This patch fixes the bug by changing print_stop_event to only call
do_displays for non-MI-like ui-outs.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-03-19  Tom Tromey  <tromey@adacore.com>

* mi/mi-interp.c (mi_on_normal_stop_1): Only show displays once.
* infrun.h (print_stop_event): Add "displays" parameter.
* infrun.c (print_stop_event): Add "displays" parameter.

gdb/testsuite/ChangeLog
2019-03-19  Tom Tromey  <tromey@adacore.com>

* gdb.mi/mi2-cli-display.c: New file.
* gdb.mi/mi2-cli-display.exp: New file.

5 years agoAdd comments describing tui_ui_out and its fields, cleanup a bit
Pedro Alves [Tue, 19 Mar 2019 18:08:27 +0000 (18:08 +0000)] 
Add comments describing tui_ui_out and its fields, cleanup a bit

This commit add comments describing tui_ui_out and its fields, and
cleans up the code a little bit.

Also switch to using in-class initialization so that the initial
values can be seen alongside the comments.

I see no reason for initializing m_line as -1 instead of 0, since all
the checks in the .c file are of the form "> 0".  AFAICS there's no
practical difference between -1 and 0.  So it seems simpler to
initialize it as 0.

There's a bit of redundancy in tui_ui_out::do_field_string, which is
fixed by this commit.

gdb/ChangeLog:
2019-03-19  Pedro Alves  <palves@redhat.com>

* tui/tui-out.c (tui_ui_out::do_field_string): Simplify.
(tui_ui_out::do_text): Add comments.  Reset M_LINE to 0 instead of
to -1.  Fix TABs vs spaces.
(tui_ui_out::tui_ui_out): Don't initialize fields here.
* tui/tui-out.h (tui_ui_out) Add intro comments.
<m_line, m_start_of_line>: In-class initialize, and add describing
comment.

5 years agoPrevent an illegal memory access by objdump when parsing a corrupt file on a 32-bit...
Nick Clifton [Tue, 19 Mar 2019 13:39:30 +0000 (13:39 +0000)] 
Prevent an illegal memory access by objdump when parsing a corrupt file on a 32-bit host.

PR 24360
* objdump.c (load_specific_debug_section): Check that the amount
of memory to be allocated matches the size of the section.

5 years agox86: Correct EVEX vector load/store optimization
H.J. Lu [Tue, 19 Mar 2019 13:12:47 +0000 (21:12 +0800)] 
x86: Correct EVEX vector load/store optimization

Update EVEX vector load/store optimization:

1. There is no need to check AVX since AVX2 is required for AVX512F.
2. We need to check both operands for ZMM register since AT&T syntax
may not set zmmword on the first operand.
3. Update Opcode_SIMD_IntD check and set.
4. Since the VEX prefix has 2 or 3 bytes, the EVEX prefix has 4 bytes,
EVEX Disp8 has 1 byte and VEX Disp32 has 4 bytes, we choose EVEX Disp8
over VEX Disp32.

* config/tc-i386.c (optimize_encoding): Don't check AVX for
EVEX vector load/store optimization.  Check both operands for
ZMM register.  Update EVEX vector load/store opcode check.
Choose EVEX Disp8 over VEX Disp32.
* testsuite/gas/i386/optimize-1.d: Updated.
* testsuite/gas/i386/optimize-1a.d: Likewise.
* testsuite/gas/i386/optimize-2.d: Likewise.
* testsuite/gas/i386/optimize-4.d: Likewise.
* testsuite/gas/i386/optimize-5.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-2.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-2a.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-2b.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-3.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-5.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-6.d: Likewise.
* testsuite/gas/i386/optimize-1.s: Add ZMM register load
test.
* testsuite/gas/i386/x86-64-optimize-2.s: Likewise.

5 years agox86: Correct EVEX to 128-bit EVEX optimization
H.J. Lu [Tue, 19 Mar 2019 13:10:21 +0000 (21:10 +0800)] 
x86: Correct EVEX to 128-bit EVEX optimization

Since not all AVX512F processors support AVX512VL, we can optimize
512-bit EVEX to 128-bit EVEX encoding for upper 16 vector registers
only when AVX512VL is enabled explicitly at command-line or via
".arch .avx512vl" directive.

PR gas/24352
* config/tc-i386.c (optimize_encoding): Check only
cpu_arch_flags.bitfield.cpuavx512vl.
* testsuite/gas/i386/i386.exp: Run x86-64-optimize-2b.
* testsuite/gas/i386/x86-64-optimize-2.d: Revert the last
change.
* testsuite/gas/i386/x86-64-optimize-2b.d: New file.
* testsuite/gas/i386/x86-64-optimize-2b.s: Likewise.

5 years agoix86: Disable AVX512F when disabling AVX2
H.J. Lu [Tue, 19 Mar 2019 13:08:15 +0000 (21:08 +0800)] 
ix86: Disable AVX512F when disabling AVX2

Since AVX2 is required for AVX512F, we should disable AVX512F when AVX2
is disabled.

gas/

PR gas/24359
* testsuite/gas/i386/i386.exp: Change optimize-6a, optimize-7,
x86-64-optimize-7a and x86-64-optimize-8 tests to run_list_test.
Remove optimize-6c and x86-64-optimize-7c tests.
* testsuite/gas/i386/noavx-3.l: Updated.
* testsuite/gas/i386/noavx-4.d: Likewise.
* testsuite/gas/i386/noavx-5.d: Likewise.
* testsuite/gas/i386/noavx-3.s: Add AVX512F tests.
* testsuite/gas/i386/noavx-4.s: Remove AVX512F tests.
* testsuite/gas/i386/nosse-5.s: Likewise.
* testsuite/gas/i386/optimize-6a.d: Removed.
* testsuite/gas/i386/optimize-6c.d: Likewise.
* testsuite/gas/i386/optimize-7.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7a.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7c.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-8.d: Likewise.
* testsuite/gas/i386/optimize-6a.l: New file.
* testsuite/gas/i386/optimize-6a.s: Likewise.
* testsuite/gas/i386/optimize-7.l: Likewise.
* testsuite/gas/i386/x86-64-optimize-7a.l: Likewise.
* testsuite/gas/i386/x86-64-optimize-7a.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-8.l: Likewise.

opcodes/

PR gas/24359
* i386-gen.c (cpu_flag_init): Add CPU_ANY_AVX512F_FLAGS to
CPU_ANY_AVX2_FLAGS.
* i386-init.h: Regenerated.

5 years agoFix Arm build error
Alan Hayward [Mon, 18 Mar 2019 16:13:12 +0000 (16:13 +0000)] 
Fix Arm build error

The following commit broke the build for Arm:
d3a70e03cf51c8fb6bc183eaff7559edffec2045
Change iterate_over_lwps to take a gdb::function_view

Correct the changes made to arm_linux_insert_hw_breakpoint1 and make
similar changes to arm_linux_remove_hw_breakpoint1.

2019-03-18  Alan Hayward  <alan.hayward@arm.com>

* arm-linux-nat.c (arm_linux_insert_hw_breakpoint1): Fix
variable names.
(arm_linux_remove_hw_breakpoint1): Use a gdb::function_view.

5 years agoAutomatic date update in version.in
GDB Administrator [Tue, 19 Mar 2019 00:00:21 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoFix first time you type UP or DOWN in TUI's command window
Pedro Alves [Mon, 18 Mar 2019 18:32:42 +0000 (18:32 +0000)] 
Fix first time you type UP or DOWN in TUI's command window

The first time you type UP or DOWN arrow in the command window, GDB
should scroll the source window, but instead it displays the line
number and the file name in the command window(?).

What happens there is that the first time we call
tui_ui_out::do_field_int, it doesn't initialize m_line, because
m_start_of_line is -1, as set by the constructor; and then the
following call to tui_ui_out::do_field_string falls back to
cli_ui_out::do_field_string because m_line is zero.

The problem is caused by a typo in the C++ification of tui_ui_out,
commit 112e8700a6f, where m_line and m_start_of_line's initial values
were swapped from what they used to be:

 -struct ui_out *
 -tui_out_new (struct ui_file *stream)
 +tui_ui_out::tui_ui_out (ui_file *stream)
 +: cli_ui_out (stream, 0),
 +  m_line (0),
 +  m_start_of_line (-1)
  {
 -
 -  /* Initialize our fields.  */
 -  data->line = -1;
 -  data->start_of_line = 0;

This commit fixes it.

gdb/ChangeLog:
2019-03-18  Pedro Alves  <palves@redhat.com>
    Eli Zaretskii <eliz@gnu.org>

* tui/tui-out.c (tui_ui_out::tui_ui_out): Fix initialization of
m_line and m_start_of_line.

5 years agoFix gdb/TUI behavior in response to [Enter] keypress
Eli Zaretskii [Mon, 18 Mar 2019 18:04:40 +0000 (20:04 +0200)] 
Fix gdb/TUI behavior in response to [Enter] keypress

gdb/ChangeLog:
2019-03-18  Eli Zaretskii  <eliz@gnu.org>

* tui/tui-io.c (gdb_wgetch): Don't echo CR.
(tui_getc): When gdb_wgetch returns a CR, behave the same as when
it returns a newline.  This fixes a regression in TUI mode, whereby
the next line is output on the same screen line as the user input.

5 years agoFix regression caused by minimal symbol changes
Tom Tromey [Mon, 18 Mar 2019 15:32:09 +0000 (09:32 -0600)] 
Fix regression caused by minimal symbol changes

The earlier patch to change minimal symbol allocations to use xmalloc
erroneously left a call to obstack_blank in
minimal_symbol_reader::install.  Because obstack_blank does not finish
the object allocation on an obstack, this in turn could cause invalid
memory reads in some situations.

This patch fixes the problem by removing the call.  Tested on x86-64
Fedora 29; also verified with valgrind.

gdb/ChangeLog
2019-03-18  Tom Tromey  <tromey@adacore.com>

* minsyms.c (minimal_symbol_reader::install): Remove call to
obstack_blank.

5 years agoImprove/fix the TUI's current source line highlight
Pedro Alves [Mon, 18 Mar 2019 14:26:00 +0000 (14:26 +0000)] 
Improve/fix the TUI's current source line highlight

With styling enabled, I think the way we display the TUI's
highlighted/current line is very ugly and distracting.  The problem in
my view is that we reverse foreground/background in colored text as
well, leading to rainbow of background colors.

This patch changes that to something that I find much more sensible --
only reverse the default foreground/background colors, leave styled
text colors alone.  If the foreground color is not the default
(because the text was styled), leave the foreground color as is.  If
e.g., the terminal is fg=BLACK, and bg=WHITE, and the style wants to
print text in RED, reverse the background color (print in BLACK), but
still print the text in RED.

Note: The new ui_file_style::set_fg method isn't called set_foreground
instead, because set_foreground is a macro in /usr/lib/term.h (ncurses).

gdb/ChangeLog:
2019-03-18  Pedro Alves  <palves@redhat.com>

* tui/tui-io.c (reverse_mode_p, reverse_save_bg, reverse_save_fg):
New globals.
(apply_style): New, factored out from ...
(apply_ansi_escape): ... this.  Handle reverse video mode.
(tui_set_reverse_mode): New function.
* tui/tui-io.h (tui_set_reverse_mode): New declaration.
* tui/tui-winsource.c (tui_show_source_line): Use
tui_set_reverse_mode instead of setting A_STANDOUT.
* ui-style.h (struct ui_file_style) <set_reverse, set_fg, set_bg>:
New setter methods.

5 years agoFix scrolling right in the TUI
Hannes Domani [Mon, 18 Mar 2019 14:25:59 +0000 (14:25 +0000)] 
Fix scrolling right in the TUI

This commit fixes two issues in scrolling right in the TUI:

#1 - Scrolling right with the arrow keys, the first keypress doesn't
do anything.  The problem is that copy_source_line() checks if
(column < first_col), and because of the ++column directly before, it
basically starts with 1 instead of 0.

#2 - Scrolling right handles TABS and escaped characters as single
characters, which just looks weird.  The problem is that there's a
spot that misses handling TABS.

gdb/ChangeLog:
2019-03-18  Hannes Domani  <ssbssa@yahoo.de>

* tui/tui-source.c (copy_source_line): Fix handling of 'column'.
Handle tabs.

5 years agoFix Ada "ptype" bug with array types
Tom Tromey [Wed, 13 Mar 2019 14:40:25 +0000 (08:40 -0600)] 
Fix Ada "ptype" bug with array types

Using ptype on an array type in Ada can sometimes show an incorrect
high bound.  This happens because ada_evaluate_subexp will create an
array with an incorrect upper bound in the EVAL_AVOID_SIDE_EFFECTS
case.

This patch fixes the problem by arranging to always create such an
array with valid bounds.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-03-18  Tom Tromey  <tromey@adacore.com>

* ada-lang.c (empty_array): Add "high" parameter.
(ada_evaluate_subexp): Update.

gdb/testsuite/ChangeLog
2019-03-18  Joel Brobecker  <brobecker@adacore.com>
    Tom Tromey  <tromey@adacore.com>

* gdb.ada/ptype_array/pck.adb: New file.
* gdb.ada/ptype_array/pck.ads: New file.
* gdb.ada/ptype_array/foo.adb: New file.
* gdb.ada/ptype_array.exp: New file.

5 years agoUse temp_ilp and restore_ilp in more places
Alan Modra [Mon, 18 Mar 2019 12:04:36 +0000 (22:34 +1030)] 
Use temp_ilp and restore_ilp in more places

* as.c (macro_expr): Use temp_ilp and restore_ilp.
* macro.c (buffer_and_nest): Likewise.
* read.c (temp_ilp): Remove FIXME.

5 years agoFix MRI mode testsuite failures
Alan Modra [Mon, 18 Mar 2019 11:46:24 +0000 (22:16 +1030)] 
Fix MRI mode testsuite failures

These fails were introduced by git commit 2469b3c584 with the
inroduction of "input_from_string":
m68k-linux  FAIL: MRI structured for
m68k-linux  FAIL: MRI structured if
m68k-linux  FAIL: MRI structured repeat
m68k-linux  FAIL: MRI structured while

Since the m68k parser called expression() without setting
input_from_string, get_symbol_name rejected FAKE_LABEL_CHAR in names.

* config/m68k-parse.y (yylex): Use temp_ilp and restore_ilp.

5 years agoPR24355, segmentation fault in function called from ppc_finish_symbols
Alan Modra [Mon, 18 Mar 2019 11:08:36 +0000 (21:38 +1030)] 
PR24355, segmentation fault in function called from ppc_finish_symbols

This one looks to be a bug going back to 2009, git commit e054468f6c
"STT_GNU_IFUNC support for PowerPC".  That bug was carried over with
git commit 49c09209d0 "Rearrange PLT reloc output on powerpc".

If the refcount for an ifunc local sym plt entry was zero,
ppc_elf_size_dynamic_sections would correctly set plt.offset to -1 but
leave glink_offset uninitialized.  That leads to occasional segfaults
(which can be made solid with MALLOC_PERTURB_=1 when using glibc).
So, guard the write_glink_stub call with plt.offset != -1.  Also,
remove the totally ineffective attempt at writing multiple-use glink
stubs only once.

PR 24355
* elf32-ppc.c (ppc_finish_symbols): Don't call write_glink_stub
for local iplt syms with ent->plt.offset == -1.  Remove ineffective
attempt at writing glink stubs only once.

5 years agocsky ld testsuite fixes
Alan Modra [Mon, 18 Mar 2019 00:41:39 +0000 (11:11 +1030)] 
csky ld testsuite fixes

* testsuite/ld-elf/merge.d: Remove csky from xfails, add moxie.
* testsuite/ld-elf/pr21884.d: Remove csky from xfails.
* testsuite/ld-elf/shared.exp: Add csky to list not xfailing pr22374.
* testsuite/ld-unique/pr21529.d: Remove csky from xfails

5 years agogdb: unconditionally define _initialize_string_view_selftests
Sergei Trofimovich [Sun, 17 Mar 2019 22:27:31 +0000 (22:27 +0000)] 
gdb: unconditionally define _initialize_string_view_selftests

The build failure was noticed by Helmut Jarausch in
https://bugs.gentoo.org/680232:
    $ ./configure CXXFLAGS='-std=c++17 -Os'
    ...
      CXXLD  gdb
    ld: init.o: in function `initialize_all_files()':
    init.c:(.text+0x113): undefined reference to `_initialize_string_view_selftests()'

It happens because '_initialize_string_view_selftests()' is
conditionally defined based on C++ default.

The change defines '_initialize_string_view_selftests()'
unconditionally and leaves implementation a no-op on c++17
compilers.

gdb/ChangeLog:
2019-03-17  Sergei Trofimovich <siarheit@google.com>

* unittests/string_view-selftests.c: Define
_initialize_string_view_selftests unconditionally.

5 years agox86: Pass -O0 to assembler for some tests
H.J. Lu [Mon, 18 Mar 2019 01:19:45 +0000 (09:19 +0800)] 
x86: Pass -O0 to assembler for some tests

* testsuite/gas/i386/att-regs.d: Pass -O0 to assembler.
* testsuite/gas/i386/avx512bw-intel.d: Likewise.
* testsuite/gas/i386/avx512bw.d: Likewise.
* testsuite/gas/i386/avx512f-intel.d: Likewise.
* testsuite/gas/i386/avx512f.d: Likewise.
* testsuite/gas/i386/disp32.d: Likewise.
* testsuite/gas/i386/intel-regs.d: Likewise.
* testsuite/gas/i386/pseudos.d: Likewise.
* testsuite/gas/i386/x86-64-disp32.d: Likewise.
* testsuite/gas/i386/x86-64-pseudos.d: Likewise.

5 years agox86: Optimize EVEX vector load/store instructions
H.J. Lu [Mon, 18 Mar 2019 00:56:10 +0000 (08:56 +0800)] 
x86: Optimize EVEX vector load/store instructions

When there is no write mask, we can encode lower 16 128-bit/256-bit
EVEX vector register load and store instructions as VEX vector register
load and store instructions with -O1.

gas/

PR gas/24348
* config/tc-i386.c (optimize_encoding): Encode 128-bit and
256-bit EVEX vector register load/store instructions as VEX
vector register load/store instructions for -O1.
* doc/c-i386.texi: Update -O1 documentation.
* testsuite/gas/i386/i386.exp: Run PR gas/24348 tests.
* testsuite/gas/i386/optimize-1.s: Add tests for EVEX vector
load/store instructions.
* testsuite/gas/i386/optimize-2.s: Likewise.
* testsuite/gas/i386/optimize-3.s: Likewise.
* testsuite/gas/i386/optimize-5.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-2.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-3.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-4.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-5.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-6.s: Likewise.
* testsuite/gas/i386/optimize-1.d: Updated.
* testsuite/gas/i386/optimize-2.d: Likewise.
* testsuite/gas/i386/optimize-3.d: Likewise.
* testsuite/gas/i386/optimize-4.d: Likewise.
* testsuite/gas/i386/optimize-5.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-2.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-3.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-4.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-5.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-6.d: Likewise.
* testsuite/gas/i386/optimize-7.d: New file.
* testsuite/gas/i386/optimize-7.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-8.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-8.s: Likewise.

opcodes/

PR gas/24348
* i386-opc.tbl: Add Optimize to vmovdqa32, vmovdqa64, vmovdqu8,
vmovdqu16, vmovdqu32 and vmovdqu64.
* i386-tbl.h: Regenerated.

5 years agoAutomatic date update in version.in
GDB Administrator [Mon, 18 Mar 2019 00:00:40 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agox86: Encode 256-bit/512-bit VEX/EVEX insns with 128-bit VEX
H.J. Lu [Sun, 17 Mar 2019 19:50:45 +0000 (03:50 +0800)] 
x86: Encode 256-bit/512-bit VEX/EVEX insns with 128-bit VEX

Since all AVX512 processors support AVX, we can encode 256-bit/512-bit
VEX/EVEX vector register clearing instructions with 128-bit VEX vector
register clearing instructions at -O1.

* config/tc-i386.c (optimize_encoding): Encode 256-bit/512-bit
VEX/EVEX vector register clearing instructions with 128-bit VEX
vector register clearing instructions at -O1.
* doc/c-i386.texi: Update -O1 and -O2 documentation.
* testsuite/gas/i386/i386.exp: Run optimize-1a and
x86-64-optimize-2a.
* testsuite/gas/i386/optimize-1a.d: New file.
* testsuite/gas/i386/x86-64-optimize-2a.d: Likewise.

5 years agoRemove unused variable from windows_make_so
Владимир Мартьянов [Sun, 17 Mar 2019 09:51:01 +0000 (12:51 +0300)] 
Remove unused variable from windows_make_so

There is unused variable text_vma in function windows_make_so. This
leads to build error on Windows using Cygwin.

gdb/ChangeLog:
2019-03-17  Vladimir Martyanov  <vilgeforce@gmail.com>

    PR gdb/24350
    * windows-nat.c (windows_make_so): Remove unused text_vma variable.

5 years agoFix wrong format specification in display_selector()
Владимир Мартьянов [Sun, 17 Mar 2019 09:48:24 +0000 (12:48 +0300)] 
Fix wrong format specification in display_selector()

There are a wrong format strings in function display_selector() in
file windows-nat.c. This leads to build error using Cygwin on Windows.
LDT_ENTRY.HighWord is a DWORD, which is unsigned long int, so the
format specification should be for long int, not simply int.

gdb/ChangeLog:
2019-03-17  Vladimir Martyanov  <vilgeforce@gmail.com>

    PR gdb/24351
    * windows-nat.c (display_selector): Format specifications fixed

5 years agoFix redisplay of the current line in GDB TUI mode
Eli Zaretskii [Sun, 17 Mar 2019 16:00:34 +0000 (18:00 +0200)] 
Fix redisplay of the current line in GDB TUI mode

Without this change, when the current line is longer than the source
window width, redisplaying that line overwrites the window frame and
also portions of the next line.

gdb/ChangeLog:
2019-03-17  Eli Zaretskii  <eliz@gnu.org>

* tui/tui-winsource.c (tui_set_is_exec_point_at): Call
tui_refill_source_window instead of tui_refresh_win, to update the
current execution line.  This fixes redisplay of the current line
when stepping through very long lines with "next" or "step".

5 years agoAutomatic date update in version.in
GDB Administrator [Sun, 17 Mar 2019 00:01:10 +0000 (00:01 +0000)] 
Automatic date update in version.in

5 years agox86: Set optimize to INT_MAX for -Os
H.J. Lu [Sat, 16 Mar 2019 23:39:18 +0000 (07:39 +0800)] 
x86: Set optimize to INT_MAX for -Os

Set optimize to INT_MAX, instead of -1, for -Os so that -Os will include
-O2 optimization.

PR gas/24353
* config/tc-i386.c (md_parse_option): Set optimize to INT_MAX
for -Os.
* testsuite/gas/i386/optimize-2.s: Add a test.
* testsuite/gas/i386/x86-64-optimize-3.s: Likewise.
* testsuite/gas/i386/optimize-2.d: Updated.
* testsuite/gas/i386/x86-64-optimize-3.d: Likewise.

5 years agox86: Correctly optimize EVEX to 128-bit VEX/EVEX
H.J. Lu [Sat, 16 Mar 2019 23:25:08 +0000 (07:25 +0800)] 
x86: Correctly optimize EVEX to 128-bit VEX/EVEX

We can optimize 512-bit EVEX to 128-bit EVEX encoding for upper 16
vector registers only when AVX512VL is enabled.  We can't optimize
EVEX to 128-bit VEX encoding when AVX isn't enabled.

PR gas/24352
* config/tc-i386.c (optimize_encoding): Encode 512-bit EVEX
with 128-bit VEX encoding only when AVX is enabled and with
128-bit EVEX encoding only when AVX512VL is enabled.
* testsuite/gas/i386/i386.exp: Run PR gas/24352 tests.
* testsuite/gas/i386/optimize-6.s: New file.
* testsuite/gas/i386/optimize-6a.d: Likewise.
* testsuite/gas/i386/optimize-6b.d: Likewise.
* testsuite/gas/i386/optimize-6c.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-7a.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7b.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7c.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-2.d: Updated.

5 years agoFix vertical scrolling of TUI source window
Eli Zaretskii [Sat, 16 Mar 2019 17:53:46 +0000 (19:53 +0200)] 
Fix vertical scrolling of TUI source window

gdb/ChangeLog:
2019-03-16  Eli Zaretskii  <eliz@gnu.org>

* source-cache.c (source_cache::get_source_lines): Call
find_source_lines to initialize s->nlines.  This fixes vertical
scrolling of TUI source window when the DOWN arrow is pressed.

5 years agoOBVIOUS: fix several occurrences of 'This options has' to 'This option has'
Philippe Waroquiers [Sat, 16 Mar 2019 15:56:44 +0000 (16:56 +0100)] 
OBVIOUS: fix several occurrences of 'This options has' to 'This option has'

5 years agoRevert "Use wclrtoeol in tui_show_source_line"
Eli Zaretskii [Sat, 16 Mar 2019 12:13:43 +0000 (14:13 +0200)] 
Revert "Use wclrtoeol in tui_show_source_line"

gdb/ChangeLog:
2019-03-16  Eli Zaretskii  <eliz@gnu.org>

* tui/tui-winsource.c (tui_show_source_line): Revert "Use
wclrtoeol in tui_show_source_line".  This reverts changes made in
commit 4a3045920bbe4e50a0f4920b0fdc4e88ef23015c.

5 years agoPR24337, segfault in _bfd_elf_rela_local_sym, again
Alan Modra [Fri, 15 Mar 2019 23:04:47 +0000 (09:34 +1030)] 
PR24337, segfault in _bfd_elf_rela_local_sym, again

Reverts commit 1ff31e135f, fixing the problem more generally.  There
are likely other place that will segfault on a NULL section.

PR 24337
* elf.c (_bfd_elf_rela_local_sym): Revert last change.
(_bfd_elf_rel_local_sym): Likewise.
* elflink.c (elf_link_input_bfd): Use bfd_und_section for
section of symbols with unrecognized shndx.

5 years agoAutomatic date update in version.in
GDB Administrator [Sat, 16 Mar 2019 00:00:26 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoChange minimal_symbol inheritance
Tom Tromey [Sat, 2 Mar 2019 20:07:47 +0000 (13:07 -0700)] 
Change minimal_symbol inheritance

This changes struct minimal_symbol to inherit from general_symbol_info
and updates various macros to cope.

Because MSYMBOL_SET_LANGUAGE and MSYMBOL_SET_NAMES were only used from
a single spot, this patch removes them in favor of simply inlining
their definitions.  I consider this to be somewhat cleaner, not least
because the "phony polymorphism" provided by such macros is not useful
in practice.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* symtab.h (struct minimal_symbol): Derive from
general_symbol_info.
(MSYMBOL_VALUE, MSYMBOL_VALUE_RAW_ADDRESS)
(MSYMBOL_VALUE_ADDRESS, MSYMBOL_VALUE_BYTES)
(MSYMBOL_BLOCK_VALUE, MSYMBOL_VALUE_CHAIN, MSYMBOL_LANGUAGE)
(MSYMBOL_SECTION, MSYMBOL_OBJ_SECTION, MSYMBOL_NATURAL_NAME)
(MSYMBOL_LINKAGE_NAME, MSYMBOL_DEMANGLED_NAME)
(MSYMBOL_SEARCH_NAME): Update.
(MSYMBOL_SET_LANGUAGE, MSYMBOL_SET_NAMES): Remove.
* solib.c (gdb_bfd_lookup_symbol_from_symtab): Don't use memset.
* minsyms.c (minimal_symbol_reader::record_full): Update.

5 years agoUse memcpy in minimal_symbol_reader::install
Tom Tromey [Sat, 2 Mar 2019 19:31:04 +0000 (12:31 -0700)] 
Use memcpy in minimal_symbol_reader::install

minimal_symbol_reader::install copies minsyms from the msym_bunch
objects into the allocated memory.  It seemed better to me to do this
via memcpy, as that is frequently optimized in libc.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* minsyms.c (minimal_symbol_reader::install): Use memcpy.

5 years agoAllocate minimal symbols with malloc
Tom Tromey [Sat, 2 Mar 2019 19:29:48 +0000 (12:29 -0700)] 
Allocate minimal symbols with malloc

Currently, minimal symbols are allocated on the per-BFD obstack.
However, it is also possible for multiple symbol readers to create
minimal symbols for a given objfile.  In this case, the minimal
symbols will be reallocated on the obstack, leading to some waste of
storage.

This is a memory leak, but I think it won't be caught by tools like
valgrind, because valgrind doesn't know about obstacks.

This patch fixes the problem by using malloc to allocate the storage
for minimal symbols.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* objfiles.h (struct objfile_per_bfd_storage) <msymbols>: Now a
unique_xmalloc_ptr.
(objfile::msymbols_range::begin, objfile::msymbols_range::end):
Update.
* minsyms.c (lookup_minimal_symbol_by_pc_section)
(build_minimal_symbol_hash_tables)
(minimal_symbol_reader::install): Update.

5 years agoUse htab_up for demangled hash
Tom Tromey [Sat, 2 Mar 2019 19:18:05 +0000 (12:18 -0700)] 
Use htab_up for demangled hash

This changes objfile_per_bfd_storage::demangled_names_hash to be an
htab_up.  This lets us remove some manual management code from the
objfile_per_bfd_storage destructor.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* symtab.c (create_demangled_names_hash): Update.
(symbol_set_names): Update.
* objfiles.h (struct objfile_per_bfd_storage)
<demangled_names_hash>: Now an htab_up.
* objfiles.c (objfile_per_bfd_storage): Simplify.

5 years agoSimplify per-BFD storage management
Tom Tromey [Sat, 2 Mar 2019 19:11:26 +0000 (12:11 -0700)] 
Simplify per-BFD storage management

There's no reason that the objfile_per_bfd_storage must be allocated
via bfd_alloc.  This patch changes objfile_per_bfd_storage to be
managed more simply, via ordinary new and delete; and moves some code
into its (new) destructor.

While doing this I also noticed an extra initialization of
language_of_main, and removed it.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* objfiles.h (struct objfile_per_bfd_storage): Declare
destructor.
* objfiles.c (objfile_per_bfd_storage::~objfile_per_bfd_storage):
New.
(get_objfile_bfd_data): Use new.  Don't initialize
language_of_main.
(free_objfile_per_bfd_storage): Remove.
(objfile_bfd_data_free, objfile::~objfile): Use delete.

5 years agoRemove minsym termination
Tom Tromey [Sat, 2 Mar 2019 19:05:57 +0000 (12:05 -0700)] 
Remove minsym termination

I was curious what used the terminating "null" minimal symbol; and
after looking I could not find anything.  This patch removes
terminate_minimal_symbol_table and the extra minimal symbol that is
allocated for it.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* symfile.c (reread_symbols): Update.
* objfiles.c (objfile::objfile): Update.
* minsyms.h (terminate_minimal_symbol_table): Don't declare.
* minsyms.c (lookup_minimal_symbol_by_pc_section): Update
comment.
(minimal_symbol_reader::install): Update.
(terminate_minimal_symbol_table): Remove.
* jit.c (jit_object_close_impl): Update.

5 years agoRemove some unneeded initializations in minimal_symbol_reader
Tom Tromey [Sat, 2 Mar 2019 02:56:45 +0000 (19:56 -0700)] 
Remove some unneeded initializations in minimal_symbol_reader

minimal_symbol_reader::record_full does not need to initialize any
minsym fields to 0, because that was already done implicitly via the
use of XCNEW when allocating the msym_bunch.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* minsyms.c (minimal_symbol_reader::record_full): Remove some
initializations.

5 years agoUse bitset for demangled_hash_languages
Tom Tromey [Sat, 2 Mar 2019 02:55:46 +0000 (19:55 -0700)] 
Use bitset for demangled_hash_languages

I noticed that objfile_per_bfd_storage::demangled_hash_languages is a
std::vector, which seemed quite large for something that,
fundamentally, can be represented as a bitset.  This patch
reimplements it as a std::bitset.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* objfiles.h (struct objfile_per_bfd_storage)
<demangled_hash_languages>: Now a bitset.
* minsyms.c (add_minsym_to_demangled_hash_table): Update.
(lookup_minimal_symbol): Update.

5 years agoSlightly simplify minsym creation
Tom Tromey [Sat, 2 Mar 2019 00:37:30 +0000 (17:37 -0700)] 
Slightly simplify minsym creation

Only one caller of minimal_symbol_reader::record_with_info was using
the return value, so this patch simplifies this code by having it
return void and changing that caller to use record_full instead.

gdb/ChangeLog
2019-03-15  Tom Tromey  <tom@tromey.com>

* minsyms.h (class minimal_symbol_reader) <record_with_info>:
Don't return the symbol.
* coffread.c (record_minimal_symbol): Use record_full.

5 years agoCOFF: Check for symbols defined in discarded section
H.J. Lu [Fri, 15 Mar 2019 14:19:01 +0000 (22:19 +0800)] 
COFF: Check for symbols defined in discarded section

For LTO, a symbol may defined in discarded section.  We should mark it
as undefined so that LTO plugin will make IR definition available.

PR ld/24267
* coffgen.c (_bfd_coff_section_already_linked): Skip discarded
section.
* cofflink.c (coff_link_add_symbols): Check for symbols defined
in discarded section.

5 years agoUpdate the documentation describing where the linker will attempt to locate plugins.
Nick Clifton [Fri, 15 Mar 2019 12:08:56 +0000 (12:08 +0000)] 
Update the documentation describing where the linker will attempt to locate plugins.

PR 24262
* ld.texi (-plugin): Correct the path used to locate linker
plugins.

5 years agoFix a potential illegal memory access whilt parsing an x86 insn.
Li Hao [Fri, 15 Mar 2019 11:58:05 +0000 (11:58 +0000)] 
Fix a potential illegal memory access whilt parsing an x86 insn.

PR 24308
* config/tc-i386.c (parse_insn): Check mnemp before using it to
determine if a suffix can be trimmed.

5 years agoPR24339, segfault on NULL symbol section
Alan Modra [Fri, 15 Mar 2019 06:19:59 +0000 (16:49 +1030)] 
PR24339, segfault on NULL symbol section

PR 24339
* elflink.c (elf_link_add_object_symbols): Bail out on a local
symbol after globals if elf_bad_symtab is not set.

5 years agoPR24337, segfault in _bfd_elf_rela_local_sym
Alan Modra [Fri, 15 Mar 2019 06:19:42 +0000 (16:49 +1030)] 
PR24337, segfault in _bfd_elf_rela_local_sym

PR 24337
* elf.c (_bfd_elf_rela_local_sym): Don't segfault on NULL sec.
(_bfd_elf_rel_local_sym): Likewise.

5 years agoPR24336, buffer overflow in swap_reloca_in
Alan Modra [Fri, 15 Mar 2019 05:19:27 +0000 (15:49 +1030)] 
PR24336, buffer overflow in swap_reloca_in

PR 24336
* elflink.c (elf_link_read_relocs_from_section): Handle fuzzed
object files with sh_size not a multiple of sh_entsize.

5 years agox86-64: Check for corrupt input with bad relocation
H.J. Lu [Fri, 15 Mar 2019 07:46:12 +0000 (15:46 +0800)] 
x86-64: Check for corrupt input with bad relocation

PR ld/24338
* elf64-x86-64.c (elf_x86_64_relocate_section): Check for corrupt
input with bad relocation.

5 years agoRe-indent elf_x86_64_relocate_section
H.J. Lu [Fri, 15 Mar 2019 06:43:36 +0000 (14:43 +0800)] 
Re-indent elf_x86_64_relocate_section

* elf64-x86-64.c (elf_x86_64_relocate_section): Re-indent.

5 years agoAutomatic date update in version.in
GDB Administrator [Fri, 15 Mar 2019 00:00:25 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoFix gdb.texinfo build
Simon Marchi [Thu, 14 Mar 2019 19:04:10 +0000 (15:04 -0400)] 
Fix gdb.texinfo build

Commit b4be1b064860 ("Fix MI output for multi-location breakpoints")
broke the build of gdb.texinfo.  The problem is simply the use of "@end
@table", which should be "@end table".

The error was:

    /home/smarchi/src/binutils-gdb/gdb/doc/gdb.texinfo:27870: warning: @table should not appear in @end
    /home/smarchi/src/binutils-gdb/gdb/doc/gdb.texinfo:27870: table requires an argument: the formatter for @item
    /home/smarchi/src/binutils-gdb/gdb/doc/gdb.texinfo:27870: no matching `@end table'
    /home/smarchi/src/binutils-gdb/gdb/doc/gdb.texinfo:27870: bad argument to @end: @table
    /home/smarchi/src/binutils-gdb/gdb/doc/gdb.texinfo:27867: warning: @table has text but no @item
    /home/smarchi/src/binutils-gdb/gdb/doc/gdb.texinfo:27879: @node seen before @end table

gdb/doc/ChangeLog:

* gdb.texinfo (GDB/MI Development and Front Ends): Fix closing
of table, "@end @table" -> "@end table".

5 years agoFix a buffer overrun error when attempting to parse corrupt DWARF information.
Nick Clifton [Thu, 14 Mar 2019 17:21:41 +0000 (17:21 +0000)] 
Fix a buffer overrun error when attempting to parse corrupt DWARF information.

PR 24334
* dwarf2.c (struct dwarf2_debug): Add sec_vma_count field.
(save_section_vma): Initialise field to the number of entries in
the sec_vma table.
(section_vma_same): Check that the number of entries in the
sec_vma table matches the number of sections in the bfd.

5 years agoFix an illegal memory access when parsing a corrupt ELF file.
Nick Clifton [Thu, 14 Mar 2019 16:03:07 +0000 (16:03 +0000)] 
Fix an illegal memory access when parsing a corrupt ELF file.

PR 24333
* elflink.c (_bfd_elf_add_default_symbol): Add a check for a NULL
section owner pointer when adding the default symbol.

5 years agoFix colors in TUI mode in MS-Windows build with ncurses
Eli Zaretskii [Thu, 14 Mar 2019 15:31:38 +0000 (17:31 +0200)] 
Fix colors in TUI mode in MS-Windows build with ncurses

The MS-Windows port of ncurses fails to switch to a color pair if
one or both of the colors are the implicit default colors.  This
change records the default colors when TUI is initialized, and
then specifies them explicitly when a color pair uses the default
colors.  This allows color styling in TUI mode on MS-Windows.

gdb/ChangeLog:
2019-03-14  Eli Zaretskii  <eliz@gnu.org>

* tui/tui-io.c [__MINGW32__]: Include windows.h.  Declare
ncurses_norm_attr.
(tui_initialize_io) [__MINGW32__]: Record the default terminal
colors in ncurses_norm_attr.
(apply_ansi_escape) [__MINGW32__]: If a color in a color pair is
"none", replace it with the default color recorded in
ncurses_norm_attr.

5 years agoFix illegal memory access parsing a corrupt ELF file.
Nick Clifton [Thu, 14 Mar 2019 14:45:32 +0000 (14:45 +0000)] 
Fix illegal memory access parsing a corrupt ELF file.

PR 24332
* elflink.c (elf_link_add_object_symbols): Add new local variable
extversym_end.  Initialise it to point to the end of the version
symbol table, if present.  Check it when initialising and updating
the ever pointer.

5 years agoAvoid a crash in source_cache::extract_lines
Tom Tromey [Fri, 8 Mar 2019 20:59:27 +0000 (13:59 -0700)] 
Avoid a crash in source_cache::extract_lines

If the first requested line is larger than the number of lines in the
source buffer, source_cache::extract_lines could crash, because it
would try to pass string::npos" to string::substr.

This patch avoids the crash by checking for this case.

This version of the patch changes get_source_lines to return
std::string.

gdb/ChangeLog
2019-03-14  Tom Tromey  <tromey@adacore.com>

* source-cache.h (class source_cache) <get_source_lines>: Return
std::string.
* source-cache.c (source_cache::extract_lines): Handle case where
first_pos==npos.  Return std::string.
(source_cache::get_source_lines): Update.

5 years agoAdd the "set style source" command
Tom Tromey [Fri, 8 Mar 2019 20:54:07 +0000 (13:54 -0700)] 
Add the "set style source" command

This adds "set style source" (and "show style source") commands.  This
gives the user control over whether source code is highlighted.

gdb/ChangeLog
2019-03-14  Tom Tromey  <tromey@adacore.com>

* NEWS: Add item for "style sources" commands.
* source-cache.c (source_cache::get_source_lines): Check
source_styling.
* cli/cli-style.c (source_styling): New global.
(_initialize_cli_style): Add "style sources" commands.
(show_style_sources): New function.
* cli/cli-style.h (source_styling): Declare.

gdb/doc/ChangeLog
2019-03-14  Tom Tromey  <tromey@adacore.com>

* gdb.texinfo (Output Styling): Document "set style source" and
"show style source".

gdb/testsuite/ChangeLog
2019-03-14  Tom Tromey  <tromey@adacore.com>

* gdb.base/style.exp: Add "set style sources" test.

5 years agoMake TUI react to "set style enabled"
Tom Tromey [Fri, 8 Mar 2019 20:41:55 +0000 (13:41 -0700)] 
Make TUI react to "set style enabled"

When the user toggles "set style enabled", the TUI should react by
redrawing the source window, if necessary.  This patch implements this
behavior.

No test because the TUI is generally not tested.

This version of the patch incorporates Pedro's patch to provide a
clean way to force the TUI to update the source window's contents.

gdb/ChangeLog
2019-03-14  Pedro Alves  <palves@redhat.com>
    Tom Tromey  <tromey@adacore.com>

* tui/tui-winsource.h (tui_refill_source_window): Declare.
* tui/tui-winsource.c (tui_refill_source_window): New function,
from...
(tui_horizontal_source_scroll): ... here.  Move some logic.
* cli/cli-style.c (set_style_enabled): Notify new observable.
* tui/tui-hooks.c (tui_redisplay_source): New function.
(tui_attach_detach_observers): Attach or detach
tui_redisplay_source.
* observable.h (source_styling_changed): New observable.
* observable.c: Define source_styling_changed observable.

5 years agoAutomatic date update in version.in
GDB Administrator [Thu, 14 Mar 2019 00:00:23 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoChange pid_to_str to return std::string
Tom Tromey [Thu, 28 Feb 2019 16:09:55 +0000 (09:09 -0700)] 
Change pid_to_str to return std::string

Currently the target pid_to_str method returns a const char *, so many
implementations have a static buffer that they update.  This patch
changes these methods to return a std::string instead.  I think this
is cleaner and avoids possible gotchas when calling pid_to_str on
different ptids in a single statement.  (Though no such calls exist
currently.)

This also updates various helper functions, and the gdbarch pid_to_str
methods.

I also made a best effort to fix all the callers, but I can't build
some of the *-nat.c files.

Tested by the buildbot.

gdb/ChangeLog
2019-03-13  Tom Tromey  <tromey@adacore.com>

* i386-gnu-nat.c (i386_gnu_nat_target::fetch_registers)
(i386_gnu_nat_target::store_registers): Update.
* target-debug.h (target_debug_print_std_string): New macro.
* x86-linux-nat.c (x86_linux_nat_target::enable_btrace): Update.
* windows-tdep.c (display_one_tib): Update.
* tui/tui-stack.c (tui_make_status_line): Update.
* top.c (print_inferior_quit_action): Update.
* thread.c (thr_try_catch_cmd): Update.
(add_thread_with_info): Update.
(thread_target_id_str): Update.
(thr_try_catch_cmd): Update.
(thread_command): Update.
(thread_find_command): Update.
* record-btrace.c (record_btrace_target::info_record)
(record_btrace_resume_thread, record_btrace_target::resume)
(record_btrace_cancel_resume, record_btrace_step_thread)
(record_btrace_target::wait, record_btrace_target::wait)
(record_btrace_target::wait, record_btrace_target::stop): Update.
* progspace.c (print_program_space): Update.
* process-stratum-target.c
(process_stratum_target::thread_address_space): Update.
* linux-fork.c (linux_fork_mourn_inferior)
(detach_checkpoint_command, info_checkpoints_command)
(linux_fork_context): Update.
(linux_fork_detach): Update.
(class scoped_switch_fork_info): Update.
(delete_checkpoint_command): Update.
* infrun.c (follow_fork_inferior): Update.
(follow_fork_inferior): Update.
(proceed_after_vfork_done): Update.
(handle_vfork_child_exec_or_exit): Update.
(follow_exec): Update.
(displaced_step_prepare_throw): Update.
(displaced_step_restore): Update.
(start_step_over): Update.
(resume_1): Update.
(clear_proceed_status_thread): Update.
(proceed): Update.
(print_target_wait_results): Update.
(do_target_wait): Update.
(context_switch): Update.
(stop_all_threads): Update.
(restart_threads): Update.
(finish_step_over): Update.
(handle_signal_stop): Update.
(switch_back_to_stepped_thread): Update.
(keep_going_pass_signal): Update.
(print_exited_reason): Update.
(normal_stop): Update.
* inferior.c (inferior_pid_to_str): Change return type.
(print_selected_inferior): Update.
(add_inferior): Update.
(detach_inferior): Update.
* dummy-frame.c (fprint_dummy_frames): Update.
* dcache.c (dcache_info_1): Update.
* btrace.c (btrace_enable, btrace_disable, btrace_teardown)
(btrace_fetch, btrace_clear): Update.
* linux-tdep.c (linux_core_pid_to_str): Change return type.
* i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Change return
type.
* fbsd-tdep.c (fbsd_core_pid_to_str): Change return type.
* sol2-tdep.h (sol2_core_pid_to_str): Change return type.
* sol2-tdep.c (sol2_core_pid_to_str): Change return type.
* gdbarch.c, gdbarch.h: Rebuild.
* gdbarch.sh (core_pid_to_str): Change return type.
* windows-nat.c (struct windows_nat_target) <pid_to_str>: Change
return type.
(windows_nat_target::pid_to_str): Change return type.
(windows_delete_thread): Update.
(windows_nat_target::attach): Update.
(windows_nat_target::files_info): Update.
* target-delegates.c: Rebuild.
* sol-thread.c (class sol_thread_target) <pid_to_str>: Change
return type.
(sol_thread_target::pid_to_str): Change return type.
* remote.c (class remote_target) <pid_to_str>: Change return
type.
(remote_target::pid_to_str): Change return type.
(extended_remote_target::attach, remote_target::remote_stop_ns)
(remote_target::remote_notif_remove_queued_reply)
(remote_target::push_stop_reply, remote_target::disable_btrace):
Update.
(extended_remote_target::attach): Update.
* remote-sim.c (struct gdbsim_target) <pid_to_str>: Change return
type.
(gdbsim_target::pid_to_str): Change return type.
* ravenscar-thread.c (struct ravenscar_thread_target)
<pid_to_str>: Change return type.
(ravenscar_thread_target::pid_to_str): Change return type.
* procfs.c (class procfs_target) <pid_to_str>: Change return
type.
(procfs_target::pid_to_str): Change return type.
(procfs_target::attach): Update.
(procfs_target::detach): Update.
(procfs_target::fetch_registers): Update.
(procfs_target::store_registers): Update.
(procfs_target::wait): Update.
(procfs_target::files_info): Update.
* obsd-nat.c (obsd_nat_target::pid_to_str): Change return type.
* nto-procfs.c (struct nto_procfs_target) <pid_to_str>: Change
return type.
(nto_procfs_target::pid_to_str): Change return type.
(nto_procfs_target::files_info, nto_procfs_target::attach): Update.
* linux-thread-db.c (class thread_db_target) <pid_to_str>: Change
return type.
* linux-nat.c (linux_nat_target::pid_to_str): Change return type.
(exit_lwp): Update.
(attach_proc_task_lwp_callback, get_detach_signal)
(detach_one_lwp, resume_lwp, linux_nat_target::resume)
(linux_nat_target::resume, wait_lwp, stop_callback)
(maybe_clear_ignore_sigint, stop_wait_callback, status_callback)
(save_stop_reason, select_event_lwp, linux_nat_filter_event)
(linux_nat_wait_1, resume_stopped_resumed_lwps)
(linux_nat_target::wait, linux_nat_stop_lwp): Update.
* inf-ptrace.c (inf_ptrace_target::pid_to_str): Change return
type.
(inf_ptrace_target::attach): Update.
(inf_ptrace_target::files_info): Update.
* go32-nat.c (struct go32_nat_target) <pid_to_str>: Change return
type.
(go32_nat_target::pid_to_str): Change return type.
* gnu-nat.c (gnu_nat_target::pid_to_str): Change return type.
(gnu_nat_target::wait): Update.
(gnu_nat_target::wait): Update.
(gnu_nat_target::resume): Update.
* fbsd-nat.c (fbsd_nat_target::pid_to_str): Change return type.
(fbsd_nat_target::wait): Update.
* darwin-nat.c (darwin_nat_target::pid_to_str): Change return
type.
(darwin_nat_target::attach): Update.
* corelow.c (class core_target) <pid_to_str>: Change return type.
(core_target::pid_to_str): Change return type.
* target.c (normal_pid_to_str): Change return type.
(default_pid_to_str): Likewise.
(target_pid_to_str): Change return type.
(target_translate_tls_address): Update.
(target_announce_detach): Update.
* bsd-uthread.c (struct bsd_uthread_target) <pid_to_str>: Change
return type.
(bsd_uthread_target::pid_to_str): Change return type.
* bsd-kvm.c (class bsd_kvm_target) <pid_to_str>: Change return
type.
(bsd_kvm_target::pid_to_str): Change return type.
* aix-thread.c (class aix_thread_target) <pid_to_str>: Change
return type.
(aix_thread_target::pid_to_str): Change return type.
* target.h (struct target_ops) <pid_to_str>: Change return type.
(target_pid_to_str, normal_pid_to_str): Likewise.
* obsd-nat.h (class obsd_nat_target) <pid_to_str>: Change return
type.
* linux-nat.h (class linux_nat_target) <pid_to_str>: Change return
type.
* inf-ptrace.h (struct inf_ptrace_target) <pid_to_str>: Change
return type.
* gnu-nat.h (struct gnu_nat_target) <pid_to_str>: Change return
type.
* fbsd-nat.h (class fbsd_nat_target) <pid_to_str>: Change return
type.
* darwin-nat.h (class darwin_nat_target) <pid_to_str>: Change
return type.

5 years agoFix MI output for multi-location breakpoints
Simon Marchi [Wed, 13 Mar 2019 19:13:03 +0000 (15:13 -0400)] 
Fix MI output for multi-location breakpoints

New in v2:

- Addressed comments about doc, updated the MI version table
- New doc for the Breakpoint information format
- New -fix-multi-location-breakpoint-output command, with associated
  doc, test and NEWS updated accordingly
- Fixed the output, the locations list is now actually in the tuple
  representing the breakpoint.

Various MI commands or events related to breakpoints output invalid MI
records when printing information about a multi-location breakpoint.
For example:

    -break-insert allo
    ^done,bkpt={...,addr="<MULTIPLE>",...},{number="1.1",...},{number="1.2",...}

The problem is that according to the syntax [1], the top-level elements
are of type "result" and should be of the form "variable=value".

This patch changes the output to wrap the locations in a list:

    ^done,bkpt={...,addr="<MULTIPLE>",locations=[{number="1.1",...},{number="1.2",...}]}

The events =breakpoint-created, =breakpoint-modified, as well as the
-break-info command also suffer from this (and maybe others I didn't
find).

Since this is a breaking change for MI, we have to deal somehow with
backwards compatibility.  The approach taken by this patch is to bump
the MI version, use the new syntax in MI3 while retaining the old syntax
in MI2.  Frontends are expected to use a precise MI version (-i=mi2), so
if they do that they should be unaffected.

The patch also adds the command -fix-multi-location-breakpoint-output,
which front ends can use to enable this behavior with MI <= 2.

[1] https://sourceware.org/gdb/onlinedocs/gdb/GDB_002fMI-Output-Syntax.html#GDB_002fMI-Output-Syntax

gdb/ChangeLog:

* NEWS: Mention that the new default MI version is 3.  Mention
changes to the output of commands and events that deal with
multi-location breakpoints.
* breakpoint.c: Include "mi/mi-out.h".
(print_one_breakpoint): Change output syntax if using MI version
>= 3.
* mi/mi-main.h (mi_cmd_fix_multi_location_breakpoint_output):
New.
(mi_multi_location_breakpoint_output_fixed): New.
* mi/mi-main.c (fix_multi_location_breakpoint_output): New.
(mi_cmd_fix_multi_location_breakpoint_output): New.
(mi_multi_location_breakpoint_output_fixed): New.
* mi/mi-cmds.c (mi_cmds): Register command
-fix-multi-location-breakpoint-output.
* mi/mi-out.c (mi_out_new): Instantiate version 3 when using
interpreter "mi".

gdb/testsuite/ChangeLog:

* mi-breakpoint-location-ena-dis.exp: Rename to ...
* mi-breakpoint-multiple-locations.exp: ... this.
(make_breakpoints_pattern): New proc.
(do_test): Add mi_version parameter, test -break-insert,
-break-info and =breakpoint-created.

gdb/doc/ChangeLog:

* gdb.texinfo (Mode Options): Mention mi3.
(Interpreters): Likewise.
(GDB/MI Development and Front Ends): Add entry for MI 3 in
version table.  Document -fix-multi-location-breakpoint-output.
(GDB/MI Breakpoint Information): Document format of breakpoint
location output.

5 years agoFactor out mi_ui_out instantiation logic
Simon Marchi [Wed, 13 Mar 2019 17:25:43 +0000 (13:25 -0400)] 
Factor out mi_ui_out instantiation logic

When re-reviewing this [1] I noticed that there were two spots encoding
the logic of instantiating an mi_ui_out object based on the interpreter
name ("mi", "mi1", "mi2" or "mi3"):

 - mi_interp::init
 - mi_load_progress

Both encode the logic to choose what the default version is when the
interpreter name is "mi".  I had forgotten the one in mi_load_progress.

Therefore, I propose extracting that logic to a single function.  I
started to add a new overload of mi_out_new, then realized the current
mi_out_new wasn't very useful, being just a thing wrapper around "new
mi_ui_out".  So I ended up with just an mi_out_new function taking the
interp name as parameter.

I ran the gdb.mi tests, and verified manually the behavior (including
the load command).

[1] https://sourceware.org/ml/gdb-patches/2019-01/msg00427.html

gdb/ChangeLog:

* mi/mi-out.h (mi_out_new): Change parameter to const char *.
* mi/mi-out.c (mi_out_new): Change parameter to const char *,
instantiate mi_ui_out based on interpreter name.
* mi/mi-interp.c (mi_interp::init): Use the new mi_out_new.
* mi/mi-main.c (mi_load_progress): Likewise.

5 years ago[BFD, LD, AArch64, 3/3] Add --pac-plt to enable PLTs protected with PAC.
Sudakshina Das [Wed, 13 Mar 2019 11:09:10 +0000 (11:09 +0000)] 
[BFD, LD, AArch64, 3/3] Add --pac-plt to enable PLTs protected with PAC.

This is part of the patch series to add support for BTI and
PAC in AArch64 linker.

1) This patch adds new definitions of PAC enabled PLTs
and both BTI and PAC enabled PLTs.
2) It also defines the new dynamic tag DT_AARCH64_PAC_PLT
for the PAC enabled PLTs.
3) This patch adds a new ld command line option: --pac-plt.
In the presence of this option, the linker uses the PAC
enabled PLTs and marks with DT_AARCH64_PAC_PLT.
4) In case both BTI and PAC are enabled the linker should
pick PLTs enabled with both and also use dynamic tags for both.
All these are made according to the new AArch64 ELF ABI
https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4

*** bfd/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* elfnn-aarch64.c (PLT_PAC_ENTRY_SIZE, PLT_PAC_SMALL_ENTRY_SIZE): New.
(PLT_BTI_PAC_ENTRY_SIZE, PLT_BTI_PAC_SMALL_ENTRY_SIZE): New.
(setup_plt_values): Account for PAC or PAC and BTI enabled PLTs.
(elfNN_aarch64_size_dynamic_sections): Add checks for PLT_BTI_PAC
and PLT_PAC_PLT.
(elfNN_aarch64_finish_dynamic_sections): Account for PLT_BTI_PAC.
(get_plt_type): Add case for DT_AARCH64_PAC_PLT.
(elfNN_aarch64_plt_sym_val): Add cases for PLT_BTI_PAC and PLT_PAC.

*** binutils/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* readelf.c (get_aarch64_dynamic_type): Add case for
DT_AARCH64_PAC_PLT.
(dynamic_section_aarch64_val): Likewise.

*** include/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* elf/aarch64.h (DT_AARCH64_PAC_PLT): New.

*** ld/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* NEWS: Document --pac-plt.
* emultempl/aarch64elf.em (OPTION_PAC_PLT): New.
(PARSE_AND_LIST_LONGOPTS, PARSE_AND_LIST_OPTIONS): Add pac-plt.
(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_PAC_PLT.
* testsuite/ld-aarch64/aarch64-elf.exp: Add the following tests.
* testsuite/ld-aarch64/bti-pac-plt-1.d: New test.
* testsuite/ld-aarch64/bti-pac-plt-2.d: New test.
* testsuite/ld-aarch64/pac-plt-1.d: New test.
* testsuite/ld-aarch64/pac-plt-2.d: New test.
* testsuite/ld-aarch64/bti-plt-1.s: Add .ifndef directive.

5 years ago[BFD, LD, AArch64, 2/3] Add --force-bti to enable BTI and to select BTI enabled PLTs
Sudakshina Das [Wed, 13 Mar 2019 10:54:30 +0000 (10:54 +0000)] 
[BFD, LD, AArch64, 2/3] Add --force-bti to enable BTI and to select BTI enabled PLTs

This is part of the patch series to add support for BTI and
PAC in AArch64 linker.

1) This patch adds a new ld command line option: --force-bti.
In the presence of this option, the linker enables BTI with the
GNU_PROPERTY_AARCH64_FEATURE_1_BTI feature. This gives out warning
in case of missing gnu notes for BTI in inputs.
2) It also defines a new set of BTI enabled PLTs. These are used either
when all the inputs are marked with GNU_PROPERTY_AARCH64_FEATURE_1_BTI
or when the new --force-bti option is used. This required adding new
fields in elf_aarch64_link_hash_table so that we could make the PLT
related information more generic.
3) It also defines a dynamic tag DT_AARCH64_BTI_PLT. The linker uses
this whenever it picks BTI enabled PLTs.
All these are made according to the new AArch64 ELF ABI
https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4

*** bfd/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>
    Szabolcs Nagy  <szabolcs.nagy@arm.com>

* bfd-in.h (aarch64_plt_type, aarch64_enable_bti_type): New.
(aarch64_bti_pac_info): New.
(bfd_elf64_aarch64_set_options): Add aarch64_bti_pac_info argument.
(bfd_elf32_aarch64_set_options): Likewise.
* bfd-in2.h: Regenerate
* elfnn-aarch64.c (PLT_BTI_ENTRY_SIZE): New.
(PLT_BTI_SMALL_ENTRY_SIZE, PLT_BTI_TLSDESC_ENTRY_SIZE): New.
(elfNN_aarch64_small_plt0_bti_entry): New.
(elfNN_aarch64_small_plt_bti_entry): New.
(elfNN_aarch64_tlsdesc_small_plt_bti_entry): New.
(elf_aarch64_obj_tdata): Add no_bti_warn and plt_type fields.
(elf_aarch64_link_hash_table): Add plt0_entry, plt_entry and
tlsdesc_plt_entry_size fields.
(elfNN_aarch64_link_hash_table_create): Initialise the new fields.
(setup_plt_values): New helper function.
(bfd_elfNN_aarch64_set_options): Use new bp_info to set plt sizes and
bti enable type.
(elfNN_aarch64_allocate_dynrelocs): Use new size members instead of
fixed macros.
(elfNN_aarch64_size_dynamic_sections): Likewise and add checks.
(elfNN_aarch64_create_small_pltn_entry): Use new generic pointers
to plt stubs instead of fixed ones and update filling them according
to the need for bti.
(elfNN_aarch64_init_small_plt0_entry): Likewise.
(elfNN_aarch64_finish_dynamic_sections): Likewise.
(get_plt_type, elfNN_aarch64_get_synthetic_symtab): New.
(elfNN_aarch64_plt_sym_val): Update size accordingly.
(elfNN_aarch64_link_setup_gnu_properties): Set up plts if BTI GNU NOTE
is set.
(bfd_elfNN_get_synthetic_symtab): Define.
(elfNN_aarch64_merge_gnu_properties): Give out warning with --force-bti
and mising BTI NOTE SECTION.

*** binutils/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>
    Szabolcs Nagy  <szabolcs.nagy@arm.com>

* readelf.c (get_aarch64_dynamic_type): New.
(get_dynamic_type): Use above for EM_AARCH64.
(dynamic_section_aarch64_val): New.
(process_dynamic_section): Use above for EM_AARCH64.

*** include/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>
    Szabolcs Nagy  <szabolcs.nagy@arm.com>

* elf/aarch64.h (DT_AARCH64_BTI_PLT): New.

*** ld/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>
    Szabolcs Nagy  <szabolcs.nagy@arm.com>

* NEWS: Document --force-bti.
* emultempl/aarch64elf.em (plt_type, bti_type, OPTION_FORCE_BTI): New.
(PARSE_AND_LIST_SHORTOPTS, PARSE_AND_LIST_OPTIONS): Add force-bti.
(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_FORCE_BTI.
* testsuite/ld-aarch64/aarch64-elf.exp: Add all the tests below.
* testsuite/ld-aarch64/bti-plt-1.d: New test.
* testsuite/ld-aarch64/bti-plt-1.s: New test.
* testsuite/ld-aarch64/bti-plt-2.s: New test.
* testsuite/ld-aarch64/bti-plt-2.d: New test.
* testsuite/ld-aarch64/bti-plt-3.d: New test.
* testsuite/ld-aarch64/bti-plt-4.d: New test.
* testsuite/ld-aarch64/bti-plt-5.d: New test.
* testsuite/ld-aarch64/bti-plt-6.d: New test.
* testsuite/ld-aarch64/bti-plt-7.d: New test.
* testsuite/ld-aarch64/bti-plt-so.s: New test.
* testsuite/ld-aarch64/bti-plt.ld: New test.

5 years ago[BFD, LD, AArch64, 1/3] Add support for GNU PROPERTIES in AArch64 for BTI and PAC
Sudakshina Das [Wed, 13 Mar 2019 10:42:27 +0000 (10:42 +0000)] 
[BFD, LD, AArch64, 1/3] Add support for GNU PROPERTIES in AArch64 for BTI and PAC

This is part of the patch series to add support for BTI and
PAC in AArch64 linker.

This patch implements the following:
1) This extends in the gnu property support in the linker for
AArch64 by defining backend hooks for elf_backend_setup_gnu_properties,
elf_backend_merge_gnu_properties and elf_backend_parse_gnu_properties.
2) It defines AArch64 specific GNU property
GNU_PROPERTY_AARCH64_FEATURE_1_AND and 2 bit for BTI and PAC in it.
3) It also adds support in readelf.c to read and print these new
GNU properties in AArch64.
All these are made according to the new AArch64 ELF ABI
https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4

*** bfd/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* elf-properties.c (_bfd_elf_link_setup_gnu_properties): Exclude
linker created inputs from merge.
* elfnn-aarch64.c (struct elf_aarch64_obj_tdata): Add field for
GNU_PROPERTY_AARCH64_FEATURE_1_AND properties.
(elfNN_aarch64_link_setup_gnu_properties): New.
(elfNN_aarch64_merge_gnu_properties): New.
(elf_backend_setup_gnu_properties): Define for AArch64.
(elf_backend_merge_gnu_properties): Likewise.
* elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Define.
(_bfd_aarch64_elf_parse_gnu_properties): Define.
(_bfd_aarch64_elf_merge_gnu_properties): Define.
* elfxx-aarch64.h (_bfd_aarch64_elf_link_setup_gnu_properties): Declare.
(_bfd_aarch64_elf_parse_gnu_properties): Declare.
(_bfd_aarch64_elf_merge_gnu_properties): Declare.
(elf_backend_parse_gnu_properties): Define for AArch64.

*** binutils/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* readelf.c (decode_aarch64_feature_1_and): New.
(print_gnu_property_note): Add case for AArch64 gnu notes.

*** include/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* elf/common.h (GNU_PROPERTY_AARCH64_FEATURE_1_AND): New.
(GNU_PROPERTY_AARCH64_FEATURE_1_BTI): New.
(GNU_PROPERTY_AARCH64_FEATURE_1_PAC): New.

*** ld/ChangeLog ***

2019-03-13  Sudakshina Das  <sudi.das@arm.com>

* NEWS: Document GNU_PROPERTY_AARCH64_FEATURE_1_BTI and
GNU_PROPERTY_AARCH64_FEATURE_1_PAC.
* testsuite/ld-aarch64/aarch64-elf.exp: Add run commands for new tests.
* testsuite/ld-aarch64/property-bti-pac1.d: New test.
* testsuite/ld-aarch64/property-bti-pac1.s: New test.
* testsuite/ld-aarch64/property-bti-pac2.d: New test.
* testsuite/ld-aarch64/property-bti-pac2.s: New test.
* testsuite/ld-aarch64/property-bti-pac3.d: New test.

5 years agox86: Properly set IBT and SHSTK properties for -z ibt/shstk
H.J. Lu [Wed, 13 Mar 2019 06:38:15 +0000 (14:38 +0800)] 
x86: Properly set IBT and SHSTK properties for -z ibt/shstk

There should be no AND properties if some input doesn't have them.  We
should set IBT and SHSTK properties for -z ibt and -z shstk if needed.

bfd/

PR ld/24322
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Properly
merge GNU_PROPERTY_X86_FEATURE_1_[IBT|SHSTK].

ld/

PR ld/24322
* testsuite/ld-i386/i386.exp: Run PR ld/24322 tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr24322a.d: New file.
* testsuite/ld-i386/pr24322b.d: Likewise.
* testsuite/ld-x86-64/pr24322a-x32.d: Likewise.
* testsuite/ld-x86-64/pr24322a.d: Likewise.
* testsuite/ld-x86-64/pr24322b-x32.d: Likewise.
* testsuite/ld-x86-64/pr24322b.d: Likewise.
* testsuite/ld-x86-64/pr24322a.s: Likewise.
* testsuite/ld-x86-64/pr24322b.s: Likewise.
* testsuite/ld-x86-64/pr24322c.s: Likewise.

5 years agodwarf2: Align relocation within .debug_line section
Christian Eggers [Sun, 10 Mar 2019 18:21:58 +0000 (19:21 +0100)] 
dwarf2: Align relocation within .debug_line section

All relocations specify a byte address.  As dwarf debug information is
organized in octets, some relocations may not be aligned.  While it
might be possible to define special relocations that operate at an
octet offset from their address, it's easier to ensure the relocations
are aligned by padding with "nop" statements.

In most dwarf sections this requirement is already fulfilled, only
relocations for symbol address within the .debug_line section can be
misaligned.

* dwarf2dbg.c (out_set_addr): Align relocation within .debug_line.

5 years agodwarf2: Pad size of .debug_line section.
Christian Eggers [Sun, 10 Mar 2019 18:21:57 +0000 (19:21 +0100)] 
dwarf2: Pad size of .debug_line section.

As all dwarf debug information is organized in octets, the size of all
dwarf sections must be aligned to OCTETS_PER_BYTE.  Most DWARF sections
meet this requirement, only the .debug_line section can reach an
arbitrary octet size.

In order to align the size to a multiple of OCTETS_PER_BYTE, the section
is padded with "nop" statements at the end.

* dwarf2dbg.c (out_debug_line): Pad size of .debug_line section.

5 years agodwarf2: Use octets for .debug_string offsets
Christian Eggers [Sun, 10 Mar 2019 18:21:56 +0000 (19:21 +0100)] 
dwarf2: Use octets for .debug_string offsets

Like other dwarf2 offsets, also the string offsets in the .debug_info
section which points into the .debug_str section must be expressed in
octets instead of bytes.

* dwarf2dbg.c (out_debug_str): Use octets for .debug_string pointers.

5 years agodwarf2: Use octets for .debug_line prologue
Christian Eggers [Sun, 10 Mar 2019 18:21:55 +0000 (19:21 +0100)] 
dwarf2: Use octets for .debug_line prologue

Like the u32 size field at the beginning of the section, also the
prologue size must be expressed in octets.

* dwarf2dbg.c (out_debug_line): Use octets for .debug_line prologue.

5 years agodwarf2: Use octets for dwarf2 headers
Christian Eggers [Sun, 10 Mar 2019 18:21:54 +0000 (19:21 +0100)] 
dwarf2: Use octets for dwarf2 headers

The content of the dwarf2 sections .debug_line, .debug_aranges and
.debug_info starts with an u32 containing the the size of the remaining
data.  According to the dwarf2 specification this value must be expressed
in octets instead of bytes.

* dwarf2dbg.c (out_debug_line): Use octets for dwarf2 headers.
(out_debug_aranges, out_debug_info): Likewise.

5 years agoSymbols with octets value
Christian Eggers [Sun, 10 Mar 2019 18:21:53 +0000 (19:21 +0100)] 
Symbols with octets value

Up to now, all symbol values are in units of bytes, where a "byte" can
consist of one or more octets (e.g. 8 bit or 16 bit).

Allow to specfiy that the "unit" of a newly created symbol is octets
(exactly 8 bit), instead of bytes.

* symbols.h (symbol_temp_new_now_octets): Declare.
(symbol_set_value_now_octets, symbol_octets_p): Declare.
* symbols.c (struct symbol_flags): New member sy_octets.
(symbol_temp_new_now_octets): New function.
(resolve_symbol_value): Return octets instead of bytes if
sy_octets is set.
(symbol_set_value_now_octets): New function.
(symbol_octets_p): New function.

5 years agodwarf2: Fix calculation of line info offset
Christian Eggers [Sun, 10 Mar 2019 18:21:52 +0000 (19:21 +0100)] 
dwarf2: Fix calculation of line info offset

The units of the value returned by "frag_now_fix()" and "size" do not
match. "frag_now_fix()" returns bytes (can be 8, 16 or 32 bit), while
"size" is octets (exactly 8 bit).

* dwarf2dbg.c (dwarf2_emit_insn): Fix calculation of line info offset.

5 years agoAutomatic date update in version.in
GDB Administrator [Wed, 13 Mar 2019 00:00:16 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoThe NEWS file had two "New targets" sections for 8.3.
John Baldwin [Tue, 12 Mar 2019 20:56:53 +0000 (13:56 -0700)] 
The NEWS file had two "New targets" sections for 8.3.

gdb/ChangeLog:

* NEWS: Combine separate "New targets" sections for 8.3.

5 years agoSupport TLS variables on FreeBSD/powerpc.
John Baldwin [Tue, 12 Mar 2019 20:39:02 +0000 (13:39 -0700)] 
Support TLS variables on FreeBSD/powerpc.

Derive the pointer to the DTV array from the %r2 register on 32-bit
powerpc and %r13 on 64-bit powerpc.

gdb/ChangeLog:

* ppc-fbsd-tdep.c (ppcfbsd_get_thread_local_address): New.
(ppcfbsd_init_abi): Install gdbarch
"fetch_tls_load_module_address" and "get_thread_local_address"
methods.

5 years agoSupport TLS variables on FreeBSD/riscv.
John Baldwin [Tue, 12 Mar 2019 20:39:02 +0000 (13:39 -0700)] 
Support TLS variables on FreeBSD/riscv.

Derive the pointer to the DTV array from the tp register.

gdb/ChangeLog:

* riscv-fbsd-tdep.c (riscv_fbsd_get_thread_local_address): New.
(riscv_fbsd_init_abi): Install gdbarch
"fetch_tls_load_module_address" and "get_thread_local_address"
methods.

5 years agoSupport TLS variables on FreeBSD/i386.
John Baldwin [Tue, 12 Mar 2019 20:39:02 +0000 (13:39 -0700)] 
Support TLS variables on FreeBSD/i386.

Derive the pointer to the DTV array from the gs_base register.  As
with FreeBSD/amd64, gs_base is currently only available via the native
target.

gdb/ChangeLog:

* i386-fbsd-tdep.c (i386fbsd_get_thread_local_address): New.
(i386fbsd_init_abi): Install gdbarch
"fetch_tls_load_module_address" and "get_thread_local_address"
methods.

5 years agoSupport TLS variables on FreeBSD/amd64.
John Baldwin [Tue, 12 Mar 2019 20:39:02 +0000 (13:39 -0700)] 
Support TLS variables on FreeBSD/amd64.

Use the fs_base register to fetch the address of a thread's tcb and
calculate the address of the DTV array.  This value is then passed to
fbsd_get_thread_local_address to compute the final variable address.

Note that fs_base is currently only available via the native target as
core dumps on FreeBSD do not store the value of fs_base.

gdb/ChangeLog:

* amd64-fbsd-tdep.c (amd64fbsd_get_thread_local_address): New.
(amd64fbsd_init_abi): Install gdbarch
"fetch_tls_load_module_address" and "get_thread_local_address"
methods.

5 years agoAdd a helper function to resolve TLS variable addresses for FreeBSD.
John Baldwin [Tue, 12 Mar 2019 20:39:02 +0000 (13:39 -0700)] 
Add a helper function to resolve TLS variable addresses for FreeBSD.

The fbsd_get_thread_local_address function accepts the base address of
a thread's DTV array and the base address of an object file's link map
and uses this to compute a TLS variable's address.  FreeBSD
architectures use an architecture-specific method to determine the
address of the DTV array pointer and call this helper function to
perform the rest of the address calculation.

* fbsd-tdep.c (fbsd_pspace_data_handle): New variable.
(struct fbsd_pspace_data): New type.
(get_fbsd_pspace_data, fbsd_pspace_data_cleanup)
(fbsd_read_integer_by_name, fbsd_fetch_rtld_offsets)
(fbsd_get_tls_index, fbsd_get_thread_local_address): New function.
(_initialize_fbsd_tdep): Initialize 'fbsd_pspace_data_handle'.
* fbsd-tdep.c (fbsd_get_thread_local_address): New prototype.

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