binutils-gdb.git
6 years agoFix lost line info for symbol at addr zero
Omair Javaid [Tue, 15 May 2018 14:04:21 +0000 (19:04 +0500)]
Fix lost line info for symbol at addr zero

This patch fixes a unique condition where GDB fails to provide line
information of symbol at address zero when code is compiled with text
address zero but loaded at an offset > 0.

For example lets compile following code snippet:

int main() {
  return 0;
}

gcc -O0 -g3 -nostdlib -emain -Wl,-Ttext=0x00 -o file.out file.c

Start gdb and run:

add-symbol-file file.out 0xffff0000
info line main

GDB will return error saying no line info is available for the symbol.

This is a direct consequence of the fix for PR 12528 where GDB tries to ignore
line table for a function which has been garbage collected by the linker.

As the garbage collected symbols are sent to address zero GDB assumes a symbol
actually placed at address zero as garbage collected.

This was fixed with an additional check address < lowpc. But when symbol is
loaded at an offset lowpc becomes lowpc + offset while no offset is added to
address rather final symbol address is calculated based on baseaddr and address
added together. So in case where symbols are loaded at an offset the condition
address < lowpc will always return true.

This patch fixes this by comparing address against a non offset lowpc.

This patch also adds a GDB test case to replicate this behavior.

gdb:

2018-06-27  Omair Javaid  <omair.javaid@linaro.org>

PR gdb/21695
* dwarf2read.c (lnp_state_machine::check_line_address): Update declaration.
(dwarf_decode_lines_1): Adjust.

gdb/testsuite:

2018-06-27  Omair Javaid  <omair.javaid@linaro.org>

PR gdb/21695
* gdb.base/infoline-reloc-main-from-zero.exp: New test.
* gdb.base/infoline-reloc-main-from-zero.c: New file.

6 years agoAdd overrides, fix FreeBSD build
Simon Marchi [Wed, 27 Jun 2018 14:52:57 +0000 (10:52 -0400)]
Add overrides, fix FreeBSD build

Fix this:

  CXX    fbsd-nat.o
In file included from fbsd-nat.c:44:
./fbsd-nat.h:40:7: error: 'find_memory_regions' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
  int find_memory_regions (find_memory_region_ftype func, void *data);
      ^
./target.h:702:17: note: overridden virtual function is here
    virtual int find_memory_regions (find_memory_region_ftype func, void *data)
                ^
In file included from fbsd-nat.c:44:
./fbsd-nat.h:42:8: error: 'info_proc' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
  bool info_proc (const char *, enum info_proc_what);
       ^
./target.h:950:18: note: overridden virtual function is here
    virtual bool info_proc (const char *, enum info_proc_what);
                 ^

gdb/ChangeLog:

* fbsd-nat.h (class fbsd_nat_target) <find_memory_regions>: Add
override.
<info_proc>: Likewise.

6 years agogas object file locations
Alan Modra [Wed, 27 Jun 2018 03:17:13 +0000 (12:47 +0930)]
gas object file locations

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

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

6 years agoAutomatic date update in version.in
GDB Administrator [Wed, 27 Jun 2018 00:00:41 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoMinor reorganization of fetch_registers/store_registers in windows-nat.c
Joel Brobecker [Tue, 26 Jun 2018 21:38:32 +0000 (14:38 -0700)]
Minor reorganization of fetch_registers/store_registers in windows-nat.c

This patch is a small reorganizational patch that splits
do_windows_fetch_inferior_registers into two parts:

  (a) One part that first reloads the thread's context when needed,
      and then decides based on the given register number whether
      one register needs to be fetched or all of them.

      This part is moved to windows_nat_target::fetch_registers.

  (b) The rest of the code, which actually fetches the register value
      and supplies it to the regcache.

A similar treatment is applied to do_windows_store_inferior_registers.

This change is preparation work for changing the way we calculate
the location of a given register in the thread context structure,
and should be a no op.

gdb/ChangeLog:

        * windows-nat.c (do_windows_fetch_inferior_registers): Rename
        to windows_fetch_one_register, and only handle the case of
        fetching one register.  Move the code that reloads the context
        and iterates over all registers if R is negative to...
        (windows_nat_target::fetch_registers): ... here.
        (do_windows_store_inferior_registers): Rename to
        windows_store_one_register, and only handle the case of storing
        one register.  Move the code that handles the case where r is
        negative to...
        (windows_nat_target::store_registers) ... here.

Tested on x86-windows and x86_64-windows using AdaCore's testsuite.

6 years agoSupport ptype/o in Rust
Tom Tromey [Fri, 8 Jun 2018 19:18:25 +0000 (13:18 -0600)]
Support ptype/o in Rust

This adds support for ptype/o to the Rust language code.

By default, the Rust compiler reorders fields to reduce padding.  So,
the Rust language code sorts the fields by offset before printing.
This may yield somewhat odd-looking results, but it is faithful to
"what really happens", and might be useful when doing lower-level
debugging.

The reordering can be disabled using #[repr(c)]; ptype/o might be more
useful in this case.

gdb/ChangeLog
2018-06-26  Tom Tromey  <tom@tromey.com>

PR rust/22574:
* typeprint.c (whatis_exp): Allow ptype/o for Rust.
* rust-lang.c (rust_print_struct_def): Add podata parameter.
Update.
(rust_internal_print_type): Add podata parameter.
(rust_print_type): Update.

gdb/testsuite/ChangeLog
2018-06-26  Tom Tromey  <tom@tromey.com>

PR rust/22574:
* gdb.rust/simple.exp (test_one_slice): Add ptype/o tests.
* gdb.rust/simple.rs (struct SimpleLayout): New.

6 years agoMove ptype/o printing code to typeprint.c
Tom Tromey [Fri, 8 Jun 2018 18:43:47 +0000 (12:43 -0600)]
Move ptype/o printing code to typeprint.c

This moves the hole-printing support code for ptype/o from
c-typeprint.c to be methods on print_offset_data.  This allows the
code to be used from non-C languages.

gdb/ChangeLog
2018-06-26  Tom Tromey  <tom@tromey.com>

* typeprint.h (struct print_offset_data) <update, finish,
maybe_print_hole>: New methods.
<indentation>: New constant.
* typeprint.c (print_offset_data::indentation): Define.
(print_offset_data::maybe_print_hole, print_offset_data::update)
(print_offset_data::finish): Move from c-typeprint.c and rename.
* c-typeprint.c (OFFSET_SPC_LEN): Remove.
(print_spaces_filtered_with_print_options): Update.
(c_print_type_union_field_offset, maybe_print_hole)
(c_print_type_struct_field_offset): Move to typeprint.c and
rename.
(c_type_print_base_struct_union): Update.

6 years agoUpdated translations.
Nick Clifton [Tue, 26 Jun 2018 13:03:16 +0000 (14:03 +0100)]
Updated translations.

gas * po/uk.po: Updated Ukranian translation.
bfd * po/uk.po: Updated Ukranian translation.
ld * po/uk.po: Updated Ukranian translation.
gold * po/uk.po: Updated Ukranian translation.

opcodes * po/uk.po: Updated Ukranian translation.
* po/de.po: Updated German translation.
* po/pt_BR.po: Updated Brazilian Portuguese translation.

binutils* po/sv.po: Updated Swedish translation.
* po/uk.po: Updated Ukranian translation.

6 years agoFix the MSP430 assembler's parsing of register names.
Nick Clifton [Tue, 26 Jun 2018 12:40:13 +0000 (13:40 +0100)]
Fix the MSP430 assembler's parsing of register names.

PR 23335
* config/tc-msp430.c (check_reg): Only accept register name
strings that do not end in an alphanumeric character.
* testsuite/gas/msp430/msp430x.d: Update expected disassembly.

6 years agoPR23169 bogus test
Alan Modra [Tue, 26 Jun 2018 05:00:16 +0000 (14:30 +0930)]
PR23169 bogus test

The testcase isn't valid.  If it happens to run on your target, you're
lucky.

PR 23169
* testsuite/ld-ifunc/ifunc.exp: Don't run pr23169 tests on
powerpc.  Comment.

6 years agoFix parens in ld bootstrap.exp
Alan Modra [Tue, 26 Jun 2018 04:59:28 +0000 (14:29 +0930)]
Fix parens in ld bootstrap.exp

Seen with tcl 8.5.13:
ERROR: tcl error sourcing .../ld/testsuite/ld-bootstrap/bootstrap.exp.
ERROR: expected boolean value but got " [istarget ia64-*-elf*] || [istarget ia64-*-linux*"
    while executing
"if { "$flags" == "--static" && { [istarget ia64-*-elf*] || [istarget ia64-*-linux*] }
 || [istarget mips*-*-linux*] } {
# On ia64 and mips, tmpdir/l..."

* testsuite/ld-bootstrap/bootstrap.exp: Use parentheses rather
than curly braces in logical expression.

6 years agoRevert "Use offsets instead of addresses in ELF_SECTION_IN_SEGMENT for non SHT_NOBITS"
Alan Modra [Thu, 21 Jun 2018 13:49:41 +0000 (23:19 +0930)]
Revert "Use offsets instead of addresses in ELF_SECTION_IN_SEGMENT for non SHT_NOBITS"

This reverts commit 57c0d77c2ce5e583dab322e05f8291bcbad0ccd3.

6 years agoFix spelling mistakes.
Nick Clifton [Tue, 26 Jun 2018 11:56:23 +0000 (12:56 +0100)]
Fix spelling mistakes.

opcodes * nfp-dis.c: Fix spelling mistake.

ld * emultempl/aarch64elf.em: Fix spelling mistake.
* emultempl/avrelf.em: Likewise.
* emultempl/elf32.em: Likewise.

binutils* doc/binutils.texi: Fix spelling mistakes.
* README--how-to-make-a-release: Likewise.

6 years agoAutomatic date update in version.in
GDB Administrator [Tue, 26 Jun 2018 00:00:44 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agogdb: For macOS, s/thread_info/struct thread_info/
Pedro Alves [Mon, 25 Jun 2018 16:18:18 +0000 (17:18 +0100)]
gdb: For macOS, s/thread_info/struct thread_info/

The macOS build currently fails with several instances of this problem:

  In file included from ../../src/gdb/darwin-nat.h:22:0,
   from ../../src/gdb/i386-darwin-nat.c:37:
  ../../src/gdb/gdbthread.h:376:59: error: type/value mismatch at argument 1 in template parameter list for 'template<class T, class Policy> class gdb::ref_ptr'
     = gdb::ref_ptr<thread_info, refcounted_object_ref_policy>;
     ^
  ../../src/gdb/gdbthread.h:376:59: note:   expected a type, got 'thread_info'
  ../../src/gdb/gdbthread.h:396:28: error: variable or field 'delete_thread' declared void
   extern void delete_thread (thread_info *thread);
      ^
(...)

This is because there's a thread_info function in the Darwin/XNU/mach API:

 http://web.mit.edu/darwin/src/modules/xnu/osfmk/man/thread_info.html

Fix this in the same way it had been fixed in commit 7aabaf9d4ad5
("Create private_thread_info hierarchy"), by adding an explicit
"struct" keyword.

gdb/ChangeLog:
2018-06-25  Pedro Alves  <palves@redhat.com>

* gdbthread.h (thread_info_ref, delete_thread)
(delete_thread_silent, first_thread_of_inferior)
(any_thread_of_inferior, switch_to_thread)
(enable_thread_stack_temporaries)
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(get_last_thread_stack_temporary)
(value_in_thread_stack_temporaries, can_access_registers_thread):
Spell out "struct thread_info" instead of just "thread_info".
* inferior.h (notice_new_inferior): Likewise.

6 years agogdb: Fix build on several hosts/ports
Pedro Alves [Mon, 25 Jun 2018 16:42:22 +0000 (17:42 +0100)]
gdb: Fix build on several hosts/ports

Commit 00431a78b28f ("Use thread_info and inferior pointers more
throughout") missed updating some callers, like e.g.,:

 gdb/remote-sim.c: In member function 'virtual void gdbsim_target::mourn_inferior()':
 gdb/remote-sim.c:1198:50: error: cannot convert 'ptid_t' to 'thread_info*' for argument '1' to 'void delete_thread_silent(thread_info*)'
   delete_thread_silent (sim_data->remote_sim_ptid);

 gdb/mygit/src/gdb/procfs.c: In member function ‘virtual void procfs_target::detach(inferior*, int)’:
 gdb/mygit/src/gdb/procfs.c:1931:23: error: invalid conversion from ‘int’ to ‘inferior*’ [-fpermissive]
    detach_inferior (pid);
 ^
 In file included from gdb/mygit/src/gdb/procfs.c:24:0:
 gdb/mygit/src/gdb/inferior.h:476:13: note:   initializing argument 1 of ‘void detach_inferior(inferior*)’

 etc.

This fixes it.

The delete_thread_silent calls in both go32-nat.c and remote-sim.c are
unnecessary because generic_mourn_inferior calls exit_inferior, which
deletes the inferior's threads.

gdb/ChangeLog:
2018-06-25  Pedro Alves  <palves@redhat.com>

* windows-nat.c (windows_delete_thread): Use find_thread_ptid and
pass thread_info pointer to delete_thread.
(windows_nat_target::detach): Pass inferior pointer to
detach_inferior.
* aix-thread.c (sync_threadlists): Pass thread_info pointer to
delete_thread.
* bsd-kvm.c (bsd_kvm_target::close): Use discard_all_inferiors.
* darwin-nat.c (darwin_check_new_threads): Use find_thread_ptid
and pass a thread_info pointer to delete_thread.
* fbsd-nat.c (fbsd_nat_target::wait): Use find_thread_ptid and
pass thread_info pointer to delete_thread.
* go32-nat.c (go32_nat_target::mourn_inferior): Remove
delete_thread_silent call.
* procfs.c (procfs_target::detach): Pass inferior pointer to
detach_inferior.
(procfs_target::wait): Pass thread_info pointer to delete_thread.
* remote-sim.c (gdbsim_target::mourn_inferior): Remove
delete_thread_silent call.
* windows-nat.c (windows_delete_thread): Use find_thread_ptid and
pass thread_info pointer to delete_thread.
(windows_nat_target::detach): Pass inferior pointer to
delete_inferior.

6 years agoAdd a syntax table to dwarf-mode.el
Tom Tromey [Mon, 25 Jun 2018 03:25:44 +0000 (21:25 -0600)]
Add a syntax table to dwarf-mode.el

This adds a syntax table for dwarf-mode to dwarf-mode.el.  I noticed
the need for this when trying to use mark-sexp (C-M-SPC) on a hex
number -- it copied the trailing ">" as well, which isn't desirable.

I've also bumped the version number to make this simpler to install
via the Emacs package system.

Tested locally.  I'm checking this in.

binutils/ChangeLog
2018-06-25  Tom Tromey  <tom@tromey.com>

* dwarf-mode.el (dwarf-mode-syntax-table): New variable.
Bump version number.

6 years agoFix compile time warning message for the AArch64 BFD backend, about a possible attemp...
Nick Clifton [Mon, 25 Jun 2018 11:49:14 +0000 (12:49 +0100)]
Fix compile time warning message for the AArch64 BFD backend, about a possible attempt to call sprintf on a NULL buffer pointer.

* elfnn-aarch64.c (_bfd_aarch64_erratum_835769_stub_name): Check
for malloc returning NULL.
(_bfd_aarch64_erratum_843419_fixup): Check for
_bfd_aarch64_erratum_835769_stub_name returning NULL.

6 years agoAutomatic date update in version.in
GDB Administrator [Mon, 25 Jun 2018 00:00:52 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoAdd more updated to release notes
Nick Clifton [Sun, 24 Jun 2018 19:09:10 +0000 (20:09 +0100)]
Add more updated to release notes

6 years agoRegenerate configure and pot files with updated binutils version number.
Nick Clifton [Sun, 24 Jun 2018 18:13:01 +0000 (19:13 +0100)]
Regenerate configure and pot files with updated binutils version number.

6 years agoUpdate version number on development (aka HEAD) branch.
Nick Clifton [Sun, 24 Jun 2018 17:46:33 +0000 (18:46 +0100)]
Update version number on development (aka HEAD) branch.

6 years agoAdd 2.30 branch notes to ChangeLogs and NEWS files.
Nick Clifton [Sun, 24 Jun 2018 17:36:15 +0000 (18:36 +0100)]
Add 2.30 branch notes to ChangeLogs and NEWS files.

6 years agoAutomatic date update in version.in
GDB Administrator [Sun, 24 Jun 2018 00:01:17 +0000 (00:01 +0000)]
Automatic date update in version.in

6 years agoBump version number and summarize new features in 1.16.
Cary Coutant [Sat, 23 Jun 2018 07:46:13 +0000 (00:46 -0700)]
Bump version number and summarize new features in 1.16.

gold/
* version.cc (version_string): Bump to 1.16.
* NEWS: Add new features in 1.16.

6 years agoFix "may be used uninitialized" warning.
Cary Coutant [Sat, 23 Jun 2018 07:26:07 +0000 (00:26 -0700)]
Fix "may be used uninitialized" warning.

gold/
PR gold/22914
* x86_64.cc (Target_x86_64::record_gnu_property): Initialize val.

6 years agoAdd x86-64 support for Indirect Branch Tracking (IBT).
Cary Coutant [Sat, 23 Jun 2018 00:28:05 +0000 (17:28 -0700)]
Add x86-64 support for Indirect Branch Tracking (IBT).

gold/
PR gold/22915
* x86_64.cc (Output_data_plt_x86_64_ibt): New class.
(Target_x86_64::do_make_data_plt): (All instantiations) Check for
IBT feature bit and create IBT PLTs.

6 years agoUpdate support for .note.gnu.property sections.
Cary Coutant [Sat, 23 Jun 2018 06:36:50 +0000 (23:36 -0700)]
Update support for .note.gnu.property sections.

The original patch did not give the target enough hooks to discover that
an input object file does not have a particular property. For the
GNU_PROPERTY_X86_FEATURE_1_AND property, for example, where a missing
property should be assumed to be all zeroes, and ANDed with other
object modules, this is essential. We now store the target-specific
properties locally in the Target structure as native uint32_t fields,
then AND the per-object feature bits with the program's feature bits
when we're finished processing each input object file. The target-specific
properties are then added back to the output note section during
finalization.

gold/
PR gold/22914
* layout.cc (read_sized_value): Fix spelling of section name.
(Layout::layout_gnu_property): Call Sized_target::record_gnu_property
for target-specific properties;
don't store them with target-independent properties yet.
(Layout::merge_gnu_properties): New method.
(Layout::add_gnu_property): New method.
(Layout::create_gnu_properties_note): Call target to finalize
target-specific properties. Fix spelling of output section name.
* layout.h (Layout::merge_gnu_properties): New method.
(Layout::add_gnu_property): New method.
* object.cc (Sized_relobj_file::do_layout): Call
Layout::merge_gnu_properties.
* target.h (Target::merge_gnu_property): Remove.
(Target::finalize_gnu_properties): New method.
(Target::do_merge_gnu_property): Move to Sized_target and rename.
(Target::do_finalize_gnu_properties): New virtual method.
(Sized_target::record_gnu_property): Moved and renamed from
Target::do_merge_gnu_property.
(Sized_target::merge_gnu_properties): New virtual method.
* x86_64.cc (Target_x86_64::isa_1_used_, isa_1_needed_)
(feature_1_, object_feature_1_, seen_first_object_): New data members.
(Target_x86_64::do_merge_gnu_property): Rename to ...
(Target_x86_64::record_gnu_property): ... this.  Save target-specific
properties in Target class object.
(Target_x86_64::merge_gnu_properties): New method.
(add_property): New static inline function.
(Target_x86_64::do_finalize_gnu_properties): New method.
* testsuite/Makefile.am (gnu_property_test): Remove C source file;
link directly without compiler driver.
* testsuite/Makefile.in: Regenerate.
* testsuite/gnu_property_a.S: Add _start.

6 years agoSilence GCC 9 error about deprecated implicit copy constructor.
Cary Coutant [Sat, 23 Jun 2018 01:19:51 +0000 (18:19 -0700)]
Silence GCC 9 error about deprecated implicit copy constructor.

Replacing push_back() with emplace_back() eliminates the calls to the
copy constructor, but I still had to provide explicit copy constructors
because of the call to vector::reserve(), which tries to instantiate them
even though they'll never actually be called when reserve() is called
on an empty vector.

gold/
* incremental.cc (Sized_incremental_binary::setup_readers): Use
emplace_back for GCC 5 and later.
* incremental.h (Incremental_binary::Input_reader): Provide copy
constructor.
(Sized_incremental_binary::Sized_input_reader): Likewise.

6 years agoAutomatic date update in version.in
GDB Administrator [Sat, 23 Jun 2018 00:00:50 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoFix "info registers" regexes in gdb.base/jit-reader.exp
Simon Marchi [Fri, 22 Jun 2018 17:40:47 +0000 (13:40 -0400)]
Fix "info registers" regexes in gdb.base/jit-reader.exp

Commit

  e813d34 ("Align natural-format register values to the same column")

changed the output of "info registers" (tabs to spaces), but didn't
update gdb.base/jit-reader.exp.  Update the regexes to expect spaces
instead.

gdb/testsuite/ChangeLog:

* gdb.base/jit-reader.exp (jit_reader_test): Expect spaces in
"info registers" output.

6 years agoAdd support for .note.gnu.property sections.
Cary Coutant [Fri, 22 Jun 2018 16:27:39 +0000 (09:27 -0700)]
Add support for .note.gnu.property sections.

elfcpp/
PR gold/22914
* elfcpp.h (NT_GNU_PROPERTY_TYPE_0): New note type.
(GNU_PROPERTY_*): New Gnu property types.
* x86_64.h (GNU_PROPERTY_X86_FEATURE_1_IBT)
(GNU_PROPERTY_X86_FEATURE_1_SHSTK): New x86 feature bits.

gold/
PR gold/22914
* layout.cc (Layout::Layout): Initialize gnu_properties_.
(read_sized_value, write_sized_value): New functions.
(Layout::layout_gnu_property): New method.
(Layout::create_notes): Call create_gnu_properties_note.
(Layout::create_gnu_properties_note): New method.
* layout.h (Layout::layout_gnu_property): New method.
(Layout::create_gnu_properties_note): New method.
(Layout::Gnu_property, Layout::Gnu_properties): New types.
(Layout::gnu_properties_): New data member.
* object.cc (Sized_relobj_file::layout_gnu_property_section): New
method.
(Sized_relobj_file::do_layout): Handle .note.gnu.property sections.
* object.h (Sized_relobj_file::layout_gnu_property_section): New
method.
* target.h (Target::merge_gnu_property): New method.
(Target::do_merge_gnu_property): New virtual method.
* x86_64.cc (Target_x86_64::do_merge_gnu_property): New method.
* testsuite/Makefile.am (gnu_property_test): New test case.
* testsuite/Makefile.in: Regenerate.
* testsuite/gnu_property_a.S: New source file.
* testsuite/gnu_property_b.S: New source file.
* testsuite/gnu_property_c.S: New source file.
* testsuite/gnu_property_main.c: New source file.
* testsuite/gnu_property_test.sh: New test script.

6 years agoUse partial register read/writes in transfer_regset
Alan Hayward [Wed, 20 Jun 2018 17:19:05 +0000 (18:19 +0100)]
Use partial register read/writes in transfer_regset

This avoids assert failures when the register is bigger than the
slot size. This happens on Aarch64 when truncating Z registers
into an fpsimd structure. This can be triggered by running
gdb command "generate-core-file".

Also, when the register is smaller then the slot size, then
zero pad when writing to the slot, and truncate when writing
to the regcache. This happens on Aarch64 with the CPSR register.

Continue to ensure registers are invalidated when both buffers
are null.

gdb/
* regcache.c (readable_regcache::read_part): Fix asserts.
(reg_buffer::raw_collect_part): New function.
(regcache::write_part): Fix asserts.
(reg_buffer::raw_supply_part): New function.
(regcache::transfer_regset_register): New helper function.
(regcache::transfer_regset): Call new functions.
(regcache_supply_regset): Use gdb_byte*.
(regcache::supply_regset): Likewise.
(regcache_collect_regset): Likewise.
(regcache::collect_regset): Likewise.
* regcache.h (reg_buffer::raw_collect_part): New declaration.
(reg_buffer::raw_supply_part): Likewise.
(regcache::transfer_regset_register): Likewise.
(regcache::transfer_regset): Use gdb_byte*.

6 years agoCorrect negs aliasing on AArch64.
Tamar Christina [Fri, 22 Jun 2018 11:27:53 +0000 (12:27 +0100)]
Correct negs aliasing on AArch64.

This patch fixes a disassembly issue with the aliases to subs with a shifted
register.  The subs instruction with the zero register as destination is
supposed to alias to cmp and when the first input register is the zero register
the subs is supposed to be aliased to negs.

This means that a subs with destination and first input registers the zero
register is supposed to be a cmp.

This is done by raising the priority of the cmp alias.

opcodes/

* aarch64-tbl.h (aarch64_opcode_table): Fix alias flag for negs
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Likewise.

gas/

* testsuite/gas/aarch64/addsub.s: Add negs to zero reg test.
* testsuite/gas/aarch64/addsub.d: Likewise.

6 years agoFix up HAS_SVE_STATE macro
Alan Hayward [Fri, 22 Jun 2018 09:26:51 +0000 (10:26 +0100)]
Fix up HAS_SVE_STATE macro

Prevents build break on aarch64 Suse.

2018-06-22  Alan Hayward  <alan.hayward@arm.com>

gdb/
* nat/aarch64-sve-linux-ptrace.h (HAS_SVE_STATE): Use &.

6 years agoAutomatic date update in version.in
GDB Administrator [Fri, 22 Jun 2018 00:00:53 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoMIPS/opcodes: Fix a typo in `-M ginv' option description
Maciej W. Rozycki [Thu, 21 Jun 2018 21:45:47 +0000 (22:45 +0100)]
MIPS/opcodes: Fix a typo in `-M ginv' option description

opcodes/
* mips-dis.c (print_mips_disassembler_options): Fix a typo in
`-M ginv' option description.

6 years agoFix treatment of symbol versions with unused as-needed libraries.
Cary Coutant [Thu, 21 Jun 2018 20:51:16 +0000 (13:51 -0700)]
Fix treatment of symbol versions with unused as-needed libraries.

When we have a weak reference to a symbol defined in an
as-needed library, and that library ends up not-needed, gold
simply clears the version information in the symbol table, even
if the symbol could have been resolved by a needed library later
in the link order. This results in a loss of version information,
which can cause the program to bind to the wrong version at run
time.

This patch lets a dynamic definition override an earlier one if
the earlier one is from a not-needed library, so that we can
retain the version information from the binding to the needed
library. In order to do that, the tracking of needed/not-needed
had to be moved up to symbol resolution time, instead of during
Symbol_table::set_dynsym_indexes().

In cases where we still end up discarding version information,
I've added a warning.

For the original problem report and discussion, see:

https://stackoverflow.com/questions/50751421/undefined-behavior-in-shared-lib-using-libpthread-but-not-having-it-in-elf-as-d

gold/
* resolve.cc (Symbol_table::resolve): Rename tobinding to
orig_tobinding.  Call set_is_needed() for objects that resolve
non-weak references.
(Symbol_table::should_override): Allow a dynamic definition to
override an earlier one in a not-needed library.
* symtab.cc (Symbol_table::set_dynsym_indexes): Remove separate
processing for as-needed symbols.  Add warning when discarding
version informatin.
* testsuite/Makefile.am (weak_as_needed): New test case.
* testsuite/Makefile.in: Regenerate.
* testsuite/weak_as_needed.sh: New test script.
* testsuite/weak_as_needed_a.c: New source file.
* testsuite/weak_as_needed_b.c: New source file.
* testsuite/weak_as_needed_b.script: New version script.
* testsuite/weak_as_needed_c.c: New source file.
* testsuite/weak_as_needed_c.script: New version script.

6 years agoMIPS/BFD: Correct formatting of compact EH backend methods
Maciej W. Rozycki [Thu, 21 Jun 2018 20:40:57 +0000 (21:40 +0100)]
MIPS/BFD: Correct formatting of compact EH backend methods

Correct the formatting of `_bfd_mips_elf_compact_eh_encoding' and
`_bfd_mips_elf_cant_unwind_opcode' definitions which extend beyond 79
columns.

bfd/
* elfxx-mips.c (_bfd_mips_elf_compact_eh_encoding)
(_bfd_mips_elf_cant_unwind_opcode): Correct formatting.

6 years agoMIPS/BFD: Keep EI_ABIVERSION setting together
Maciej W. Rozycki [Thu, 21 Jun 2018 20:40:56 +0000 (21:40 +0100)]
MIPS/BFD: Keep EI_ABIVERSION setting together

Shuffle code in `_bfd_mips_post_process_headers' so that the setting of
the EI_ABIVERSION ELF file header field is complete before calling
`_bfd_elf_post_process_headers'.  This used to be the case, but was
changed with commit 351cdf24d223 ("[MIPS] Implement O32 FPXX, FP64 and
FP64A ABI extensions") for no reason.

bfd/
* elfxx-mips.c (_bfd_mips_post_process_headers): Keep
EI_ABIVERSION setting together.

6 years agoMIPS/BFD: Use enumeration constants for EI_ABIVERSION
Maciej W. Rozycki [Thu, 21 Jun 2018 20:40:56 +0000 (21:40 +0100)]
MIPS/BFD: Use enumeration constants for EI_ABIVERSION

Define enumeration constants based on generated `libc-abis.h' from GNU
libc, adding a MIPS_ prefix as these are port-specific.  Use them to
replace magic numbers stored in the EI_ABIVERSION field of the ELF file
header.

bfd/
* elfxx-mips.c (MIPS_LIBC_ABI_DEFAULT, MIPS_LIBC_ABI_MIPS_PLT)
(MIPS_LIBC_ABI_UNIQUE, MIPS_LIBC_ABI_MIPS_O32_FP64)
(MIPS_LIBC_ABI_MAX): New enumeration constants.
(_bfd_mips_post_process_headers): Use them in place of magic
numbers.

6 years agoRISC-V: Fix 3 PIE related ld testsuite failures.
Jim Wilson [Thu, 21 Jun 2018 18:45:43 +0000 (11:45 -0700)]
RISC-V: Fix 3 PIE related ld testsuite failures.

bfd/
* elfnn-riscv.c (riscv_elf_finish_dynamic_symbol): Update comment.
Use SYMBOL_REFERENCES_LOCAL.  Add asserts for h->got.offset.

6 years agoUse thread_info and inferior pointers more throughout
Pedro Alves [Thu, 21 Jun 2018 16:09:31 +0000 (17:09 +0100)]
Use thread_info and inferior pointers more throughout

This is more preparation bits for multi-target support.

In a multi-target scenario, we need to address the case of different
processes/threads running on different targets that happen to have the
same PID/PTID.  E.g., we can have both process 123 in target 1, and
process 123 in target 2, while they're in reality different processes
running on different machines.  Or maybe we've loaded multiple
instances of the same core file.  Etc.

To address this, in my WIP multi-target branch, threads and processes
are uniquely identified by the (process_stratum target_ops *, ptid_t)
and (process_stratum target_ops *, pid) tuples respectively.  I.e.,
each process_stratum instance has its own thread/process number space.

As you can imagine, that requires passing around target_ops * pointers
in a number of functions where we're currently passing only a ptid_t
or an int.  E.g., when we look up a thread_info object by ptid_t in
find_thread_ptid, the ptid_t alone isn't sufficient.

In many cases though, we already have the thread_info or inferior
pointer handy, but we "lose" it somewhere along the call stack, only
to look it up again by ptid_t/pid.  Since thread_info or inferior
objects know their parent target, if we pass around thread_info or
inferior pointers when possible, we avoid having to add extra
target_ops parameters to many functions, and also, we eliminate a
number of by ptid_t/int lookups.

So that's what this patch does.  In a bit more detail:

- Changes a number of functions and methods to take a thread_info or
  inferior pointer instead of a ptid_t or int parameter.

- Changes a number of structure fields from ptid_t/int to inferior or
  thread_info pointers.

- Uses the inferior_thread() function whenever possible instead of
  inferior_ptid.

- Uses thread_info pointers directly when possible instead of the
  is_running/is_stopped etc. routines that require a lookup.

- A number of functions are eliminated along the way, such as:

  int valid_gdb_inferior_id (int num);
  int pid_to_gdb_inferior_id (int pid);
  int gdb_inferior_id_to_pid (int num);
  int in_inferior_list (int pid);

- A few structures and places hold a thread_info pointer across
  inferior execution, so now they take a strong reference to the
  (refcounted) thread_info object to avoid the thread_info pointer
  getting stale.  This is done in enable_thread_stack_temporaries and
  in the infcall.c code.

- Related, there's a spot in infcall.c where using a RAII object to
  handle the refcount would be handy, so a gdb::ref_ptr specialization
  for thread_info is added (thread_info_ref, in gdbthread.h), along
  with a gdb_ref_ptr policy that works for all refcounted_object types
  (in common/refcounted-object.h).

gdb/ChangeLog:
2018-06-21  Pedro Alves  <palves@redhat.com>

* ada-lang.h (ada_get_task_number): Take a thread_info pointer
instead of a ptid_t.  All callers adjusted.
* ada-tasks.c (ada_get_task_number): Likewise.  All callers
adjusted.
(print_ada_task_info, display_current_task_id, task_command_1):
Adjust.
* breakpoint.c (watchpoint_in_thread_scope): Adjust to use
inferior_thread.
(breakpoint_kind): Adjust.
(remove_breakpoints_pid): Rename to ...
(remove_breakpoints_inf): ... this.  Adjust to take an inferior
pointer.  All callers adjusted.
(bpstat_clear_actions): Use inferior_thread.
(get_bpstat_thread): New.
(bpstat_do_actions): Use it.
(bpstat_check_breakpoint_conditions, bpstat_stop_status): Adjust
to take a thread_info pointer.  All callers adjusted.
(set_longjmp_breakpoint_for_call_dummy, set_momentary_breakpoint)
(breakpoint_re_set_thread): Use inferior_thread.
* breakpoint.h (struct inferior): Forward declare.
(bpstat_stop_status): Update.
(remove_breakpoints_pid): Delete.
(remove_breakpoints_inf): New.
* bsd-uthread.c (bsd_uthread_target::wait)
(bsd_uthread_target::update_thread_list): Use find_thread_ptid.
* btrace.c (btrace_add_pc, btrace_enable, btrace_fetch)
(maint_btrace_packet_history_cmd)
(maint_btrace_clear_packet_history_cmd): Adjust.
(maint_btrace_clear_cmd, maint_info_btrace_cmd): Adjust to use
inferior_thread.
* cli/cli-interp.c: Include "inferior.h".
* common/refcounted-object.h (struct
refcounted_object_ref_policy): New.
* compile/compile-object-load.c: Include gdbthread.h.
(store_regs): Use inferior_thread.
* corelow.c (core_target::close): Use current_inferior.
(core_target_open): Adjust to use first_thread_of_inferior and use
the current inferior.
* ctf.c (ctf_target::close): Adjust to use current_inferior.
* dummy-frame.c (dummy_frame_id) <ptid>: Delete, replaced by ...
<thread>: ... this new field.  All references adjusted.
(dummy_frame_pop, dummy_frame_discard, register_dummy_frame_dtor):
Take a thread_info pointer instead of a ptid_t.
* dummy-frame.h (dummy_frame_push, dummy_frame_pop)
(dummy_frame_discard, register_dummy_frame_dtor): Take a
thread_info pointer instead of a ptid_t.
* elfread.c: Include "inferior.h".
(elf_gnu_ifunc_resolver_stop, elf_gnu_ifunc_resolver_return_stop):
Use inferior_thread.
* eval.c (evaluate_subexp): Likewise.
* frame.c (frame_pop, has_stack_frames, find_frame_sal): Use
inferior_thread.
* gdb_proc_service.h (struct thread_info): Forward declare.
(struct ps_prochandle) <ptid>: Delete, replaced by ...
<thread>: ... this new field.  All references adjusted.
* gdbarch.h, gdbarch.c: Regenerate.
* gdbarch.sh (get_syscall_number): Replace 'ptid' parameter with a
'thread' parameter.  All implementations and callers adjusted.
* gdbthread.h (thread_info) <set_running>: New method.
(delete_thread, delete_thread_silent): Take a thread_info pointer
instead of a ptid.
(global_thread_id_to_ptid, ptid_to_global_thread_id): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function.  All callers
adjusted.
(any_live_thread_of_process): Delete, replaced by ...
(any_live_thread_of_inferior): ... this new function.  All callers
adjusted.
(switch_to_thread, switch_to_no_thread): Declare.
(is_executing): Delete.
(enable_thread_stack_temporaries): Update comment.
<enable_thread_stack_temporaries>: Take a thread_info pointer
instead of a ptid_t.  Incref the thread.
<~enable_thread_stack_temporaries>: Decref the thread.
<m_ptid>: Delete
<m_thr>: New.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(get_last_thread_stack_temporary)
(value_in_thread_stack_temporaries, can_access_registers_thread):
Take a thread_info pointer instead of a ptid_t.  All callers
adjusted.
* infcall.c (get_call_return_value): Use inferior_thread.
(run_inferior_call): Work with thread pointers instead of ptid_t.
(call_function_by_hand_dummy): Work with thread pointers instead
of ptid_t.  Use thread_info_ref.
* infcmd.c (proceed_thread_callback): Access thread's state
directly.
(ensure_valid_thread, ensure_not_running): Use inferior_thread,
access thread's state directly.
(continue_command): Use inferior_thread.
(info_program_command): Use find_thread_ptid and access thread
state directly.
(proceed_after_attach_callback): Use thread state directly.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t.  All callers adjusted.
(exit_inferior): Take an inferior pointer instead of a pid.  All
callers adjusted.
(exit_inferior_silent): New.
(detach_inferior): Delete.
(valid_gdb_inferior_id, pid_to_gdb_inferior_id)
(gdb_inferior_id_to_pid, in_inferior_list): Delete.
(detach_inferior_command, kill_inferior_command): Use
find_inferior_id instead of valid_gdb_inferior_id and
gdb_inferior_id_to_pid.
(inferior_command): Use inferior and thread pointers.
* inferior.h (struct thread_info): Forward declare.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t.  All callers adjusted.
(detach_inferior): Delete declaration.
(exit_inferior, exit_inferior_silent): Take an inferior pointer
instead of a pid.  All callers adjusted.
(gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list)
(valid_gdb_inferior_id): Delete.
* infrun.c (follow_fork_inferior, proceed_after_vfork_done)
(handle_vfork_child_exec_or_exit, follow_exec): Adjust.
(struct displaced_step_inferior_state) <pid>: Delete, replaced by
...
<inf>: ... this new field.
<step_ptid>: Delete, replaced by ...
<step_thread>: ... this new field.
(get_displaced_stepping_state): Take an inferior pointer instead
of a pid.  All callers adjusted.
(displaced_step_in_progress_any_inferior): Adjust.
(displaced_step_in_progress_thread): Take a thread pointer instead
of a ptid_t.  All callers adjusted.
(displaced_step_in_progress, add_displaced_stepping_state): Take
an inferior pointer instead of a pid.  All callers adjusted.
(get_displaced_step_closure_by_addr): Adjust.
(remove_displaced_stepping_state): Take an inferior pointer
instead of a pid.  All callers adjusted.
(displaced_step_prepare_throw, displaced_step_prepare)
(displaced_step_fixup): Take a thread pointer instead of a ptid_t.
All callers adjusted.
(start_step_over): Adjust.
(infrun_thread_ptid_changed): Remove bit updating ptids in the
displaced step queue.
(do_target_resume): Adjust.
(fetch_inferior_event): Use inferior_thread.
(context_switch, get_inferior_stop_soon): Take an
execution_control_state pointer instead of a ptid_t.  All callers
adjusted.
(switch_to_thread_cleanup): Delete.
(stop_all_threads): Use scoped_restore_current_thread.
* inline-frame.c: Include "gdbthread.h".
(inline_state) <inline_state>: Take a thread pointer instead of a
ptid_t.  All callers adjusted.
<ptid>: Delete, replaced by ...
<thread>: ... this new field.
(find_inline_frame_state): Take a thread pointer instead of a
ptid_t.  All callers adjusted.
(skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Take a thread
pointer instead of a ptid_t.  All callers adjusted.
* inline-frame.h (skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Likewise.
* linux-fork.c (delete_checkpoint_command): Adjust to use thread
pointers directly.
* linux-nat.c (get_detach_signal): Likewise.
* linux-thread-db.c (thread_from_lwp): New 'stopped' parameter.
(thread_db_notice_clone): Adjust.
(thread_db_find_new_threads_silently)
(thread_db_find_new_threads_2, thread_db_find_new_threads_1): Take
a thread pointer instead of a ptid_t.  All callers adjusted.
* mi/mi-cmd-var.c: Include "inferior.h".
(mi_cmd_var_update_iter): Update to use thread pointers.
* mi/mi-interp.c (mi_new_thread): Update to use the thread's
inferior directly.
(mi_output_running_pid, mi_inferior_count): Delete, bits factored
out to ...
(mi_output_running): ... this new function.
(mi_on_resume_1): Adjust to use it.
(mi_user_selected_context_changed): Adjust to use inferior_thread.
* mi/mi-main.c (proceed_thread): Adjust to use thread pointers
directly.
(interrupt_thread_callback): : Adjust to use thread and inferior
pointers.
* proc-service.c: Include "gdbthread.h".
(ps_pglobal_lookup): Adjust to use the thread's inferior directly.
* progspace-and-thread.c: Include "inferior.h".
* progspace.c: Include "inferior.h".
* python/py-exitedevent.c (create_exited_event_object): Adjust to
hold a reference to an inferior_object.
* python/py-finishbreakpoint.c (bpfinishpy_init): Adjust to use
inferior_thread.
* python/py-inferior.c (struct inferior_object): Give the type a
tag name instead of a typedef.
(python_on_normal_stop): No need to check if the current thread is
listed.
(inferior_to_inferior_object): Change return type to
inferior_object.  All callers adjusted.
(find_thread_object): Delete, bits factored out to ...
(thread_to_thread_object): ... this new function.
* python/py-infthread.c (create_thread_object): Use
inferior_to_inferior_object.
(thpy_is_stopped): Use thread pointer directly.
(gdbpy_selected_thread): Use inferior_thread.
* python/py-record-btrace.c (btpy_list_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field.  All users adjusted.
(btpy_insn_or_gap_new): Drop const.
(btpy_list_new): Take a thread pointer instead of a ptid_t.  All
callers adjusted.
* python/py-record.c: Include "gdbthread.h".
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t.  All callers adjusted.
(gdbpy_current_recording): Use inferior_thread.
* python/py-record.h (recpy_record_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field.  All users adjusted.
(recpy_element_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field.  All users adjusted.
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t.  All callers adjusted.
* python/py-threadevent.c: Include "gdbthread.h".
(get_event_thread): Use thread_to_thread_object.
* python/python-internal.h (struct inferior_object): Forward
declare.
(find_thread_object, find_inferior_object): Delete declarations.
(thread_to_thread_object, inferior_to_inferior_object): New
declarations.
* record-btrace.c: Include "inferior.h".
(require_btrace_thread): Use inferior_thread.
(record_btrace_frame_sniffer)
(record_btrace_tailcall_frame_sniffer): Use inferior_thread.
(get_thread_current_frame): Use scoped_restore_current_thread and
switch_to_thread.
(get_thread_current_frame): Use thread pointer directly.
(record_btrace_replay_at_breakpoint): Use thread's inferior
pointer directly.
* record-full.c: Include "inferior.h".
* regcache.c: Include "gdbthread.h".
(get_thread_arch_regcache): Use the inferior's address space
directly.
(get_thread_regcache, registers_changed_thread): New.
* regcache.h (get_thread_regcache(thread_info *thread)): New
overload.
(registers_changed_thread): New.
(remote_target) <remote_detach_1>: Swap order of parameters.
(remote_add_thread): <remote_add_thread>: Return the new thread.
(get_remote_thread_info(ptid_t)): New overload.
(remote_target::remote_notice_new_inferior): Use thread pointers
directly.
(remote_target::process_initial_stop_replies): Use
thread_info::set_running.
(remote_target::remote_detach_1, remote_target::detach)
(extended_remote_target::detach): Adjust.
* stack.c (frame_show_address): Use inferior_thread.
* target-debug.h (target_debug_print_thread_info_pp): New.
* target-delegates.c: Regenerate.
* target.c (default_thread_address_space): Delete.
(memory_xfer_partial_1): Use current_inferior.
(target_detach): Use current_inferior.
(target_thread_address_space): Delete.
(generic_mourn_inferior): Use current_inferior.
* target.h (struct target_ops) <thread_address_space>: Delete.
(target_thread_address_space): Delete.
* thread.c (init_thread_list): Use ALL_THREADS_SAFE.  Use thread
pointers directly.
(delete_thread_1, delete_thread, delete_thread_silent): Take a
thread pointer instead of a ptid_t.  Adjust all callers.
(ptid_to_global_thread_id, global_thread_id_to_ptid): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function.  All callers
adjusted.
(any_thread_of_process): Rename to ...
(any_thread_of_inferior): ... this, and take an inferior pointer.
(any_live_thread_of_process): Rename to ...
(any_live_thread_of_inferior): ... this, and take an inferior
pointer.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(value_in_thread_stack_temporaries)
(get_last_thread_stack_temporary): Take a thread pointer instead
of a ptid_t.  Adjust all callers.
(thread_info::set_running): New.
(validate_registers_access): Use inferior_thread.
(can_access_registers_ptid): Rename to ...
(can_access_registers_thread): ... this, and take a thread
pointer.
(print_thread_info_1): Adjust to compare thread pointers instead
of ptids.
(switch_to_no_thread, switch_to_thread): Make extern.
(scoped_restore_current_thread::~scoped_restore_current_thread):
Use m_thread pointer directly.
(scoped_restore_current_thread::scoped_restore_current_thread):
Use inferior_thread.
(thread_command): Use thread pointer directly.
(thread_num_make_value_helper): Use inferior_thread.
* top.c (execute_command): Use inferior_thread.
* tui/tui-interp.c: Include "inferior.h".
* varobj.c (varobj_create): Use inferior_thread.
(value_of_root_1): Use find_thread_global_id instead of
global_thread_id_to_ptid.

6 years agoAvoid memcpys in regcache read_part/write_part for full registers.
Alan Hayward [Wed, 20 Jun 2018 08:31:37 +0000 (09:31 +0100)]
Avoid memcpys in regcache read_part/write_part for full registers.

Additionally, tidy up the functions: Remove asserts, use gdb_byte,
update comments.

gdb/
* regcache.c (readable_regcache::read_part): Avoid memcpy when
possible.
(regcache::write_part): Likewise.
(readable_regcache::cooked_read_part): Update comment.
(readable_regcache::cooked_write_part): Likewise.
* regcache.h: (readable_regcache::read_part): Likewise.
(regcache::write_part): Likewise.

6 years agoRegen doc/Makefile.in
Alan Modra [Wed, 20 Jun 2018 04:46:52 +0000 (14:16 +0930)]
Regen doc/Makefile.in

Also make the automake strictness "foreign".  My regeneration of the
three doc/Makefile.in files already had --foreign in the automake
invocation, so this just makes it explicit.

bfd/
* doc/Makefile.am (AUTOMAKE_OPTIONS): Add "foreign".
* doc/Makefile.in: Regenerate.
binutils/
* doc/Makefile.am (AUTOMAKE_OPTIONS): Add "foreign".
* doc/Makefile.in: Regenerate.
gas/
* doc/Makefile.am (AUTOMAKE_OPTIONS): Add "foreign".
* doc/Makefile.in: Regenerate.
zlib/
* Makefile.in: Regenerate.

6 years agoEnable hardware watchpoints on attach for aarch64
Richard Bunt [Thu, 21 Jun 2018 13:09:34 +0000 (14:09 +0100)]
Enable hardware watchpoints on attach for aarch64

This commit fixes a bug whereby hardware watchpoints are not used on
aarch64 when attaching to a target. The fix adds an aarch64 specialization
of post_attach which records the number of available hardware debug registers
using aarch64_linux_get_debug_reg_capacity. This implementation mirrors that
of aarch64_linux_child_post_startup_inferior which successfully enables the
use of hardware watchpoints when launching the target under the debugger.

gdb/ChangeLog:

* aarch64-linux-nat.c (post_attach): New.
(aarch64_linux_nat_target::post_attach): Override post_attach to
record the number of hardware debug registers.

gdb/testsuite/ChangeLog:

* gdb.base/watchpoint-hw-attach.c: New test.
* gdb.base/watchpoint-hw-attach.exp: New file.

6 years agoUse offsets instead of addresses in ELF_SECTION_IN_SEGMENT for non SHT_NOBITS
Alan Hayward [Thu, 21 Jun 2018 08:37:58 +0000 (09:37 +0100)]
Use offsets instead of addresses in ELF_SECTION_IN_SEGMENT for non SHT_NOBITS

For sections that are not SHT_NOBITS, use sh_offset and p_offset instead of
sh_addr and p_vaddr when calculating if a section fits in a segment. Both
methods are valid when using the GNU linker.

include/
* elf/internal.h (ELF_SECTION_IN_SEGMENT): Don’t check addresses
for non SHT_NOBITS.

6 years agoFix a memory leak in py-param.c
Tom Tromey [Wed, 20 Jun 2018 21:35:04 +0000 (15:35 -0600)]
Fix a memory leak in py-param.c

Mark Wielaard pointed out this memory leak to me:

    ==17633== 775 bytes in 1 blocks are definitely lost in loss record 13,346 of 13,967
    ==17633==    at 0x4C2DB6B: malloc (vg_replace_malloc.c:299)
    ==17633==    by 0x6652B7: xmalloc (common-utils.c:45)
    ==17633==    by 0xC4C889: xstrdup (xstrdup.c:34)
    ==17633==    by 0x5A71FD: unicode_to_encoded_string(_object*, char const*) (py-utils.c:81)
    ==17633==    by 0x5A73EB: python_string_to_host_string(_object*) (py-utils.c:158)
    ==17633==    by 0x59CC6C: get_doc_string(_object*, _object*) (py-param.c:334)
    ==17633==    by 0x59D2AA: parmpy_init(_object*, _object*, _object*) (py-param.c:728)

The bug here is that parmpy_init is written as though
add_setshow_generic takes ownership of its doc-string arguments.
However, it does not.  This patch fixes the bug in a straightforward
way and also applies some missing constification to make the problem
more apparent.

Tested on x86-64 Fedora 26.

gdb/ChangeLog
2018-06-20  Tom Tromey  <tom@tromey.com>

* python/py-param.c (add_setshow_generic): Make parameters const.
(parmpy_init): Update.

6 years agoAutomatic date update in version.in
GDB Administrator [Thu, 21 Jun 2018 00:00:39 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoRename regcache_cooked_read_ftype and make a function_view
Simon Marchi [Wed, 20 Jun 2018 16:49:03 +0000 (12:49 -0400)]
Rename regcache_cooked_read_ftype and make a function_view

regcache_cooked_read_ftype can be converted to a function_view, which
allows us to use lambda functions and therefore avoid having to pass an
opaque pointer parameter.

Adjusting the fallouts showed that the "const regcache &" passed to the
readonly_detached_regcache constructor is cast to non-const in
do_cooked_read.  I changed the constructor parameter to be non-const.

Finally, I renamed the typedef from regcache_cooked_read_ftype to
register_read_ftype, since there is nothing that forces us to use it
only for regcaches nor cooked registers.

gdb/ChangeLog:

* regcache.h (regcache_cooked_read_ftype): Rename to...
(register_read_ftype): ...this, change type to function_view.
(class reg_buffer) <save>: Remove src parameter.
(readonly_detached_regcache) <readonly_detached_regcache>: Make
parameter non-const in first overload.  Remove src parameter in
second overload.
* regcache.c (do_cooked_read): Remove.
(readonly_detached_regcache::readonly_detached_regcache): Make
parameter non-const, adjust call to other constructor.
(reg_buffer::save): Remove src parameter.
* frame.c (do_frame_register_read): Remove.
(frame_save_as_regcache): Use lambda function.
* ppc-linux-tdep.c (ppu2spu_unwind_register): Change type of src
parameter to ppu2spu_data *.
(ppu2spu_sniffer): Use lambda function.

6 years agotestsuite: Fix cc-with-tweaks.sh being executed in the wrong shell
Simon Marchi [Wed, 20 Jun 2018 16:46:28 +0000 (12:46 -0400)]
testsuite: Fix cc-with-tweaks.sh being executed in the wrong shell

The cc-with-tweaks.sh script needs to be executed with bash.  When
trying to run this:

  make check RUNTESTFLAGS="--target_board=dwarf4-gdb-index" TESTS="gdb.base/return.exp"

I get:

  gdb compile failed, /home/emaisin/src/binutils-gdb/gdb/contrib/cc-with-tweaks.sh: 174: /home/emaisin/src/binutils-gdb/gdb/contrib/cc-with-tweaks.sh: Bad substitution

The reason is that the board files execute cc-with-tweaks.sh using
/bin/sh, which points to dash on my machine.  Remove the /bin/sh part
and let the shebang choose the right interpreter.

gdb/testsuite/ChangeLog:

* boards/cc-with-tweaks.exp: Don't call cc-with-tweaks.sh
through /bin/sh.
* boards/dwarf4-gdb-index.exp: Likewise.
* boards/fission-dwp.exp: Likewise.

6 years agoRemove struct keyword in range-based for-loop
Simon Marchi [Wed, 20 Jun 2018 16:40:54 +0000 (12:40 -0400)]
Remove struct keyword in range-based for-loop

Fix this with gcc 6.3.0, and make the loop variable const while at it:

/home/simark/src/binutils-gdb/gdb/record-full.c: In member function 'virtual int record_full_target::insert_breakpoint(gdbarch*, bp_target_info*)':
/home/simark/src/binutils-gdb/gdb/record-full.c:1789:8: error: types may not be defined in a for-range-declaration [-Werror]
   for (struct record_full_breakpoint &bp : record_full_breakpoints)

gdb/ChangeLog:

* record-full.c (record_full_target::insert_breakpoint): Remove
"struct" keyword, add const.

6 years agoFix potential illegal memroy access when using a build-id note with a negative size.
Nick Clifton [Wed, 20 Jun 2018 15:30:05 +0000 (16:30 +0100)]
Fix potential illegal memroy access when using a build-id note with a negative size.

PR 23316
* opncls.c (get_build_id): Check for a negative or excessive data
size in the build-id note.

6 years agoImprove gdb.base/float128.exp failure message
Ulrich Weigand [Wed, 20 Jun 2018 14:24:16 +0000 (16:24 +0200)]
Improve gdb.base/float128.exp failure message

If the "print large128" sub-test fails in a manner that typically
indicates internal overflow due to GDB being built without MPFR
support, explicitly state this in the failure message.

gdb/testsuite/ChangeLog:
2018-06-20  Ulrich Weigand  <uweigand@de.ibm.com>

* gdb.base/float128.exp: Add comment and improved fail message
to the failure case of "print large128" test.

6 years ago[BFD][AARCH64]Properly truncate no overflow checking relocation value for load/store...
Renlin Li [Fri, 27 Apr 2018 09:48:18 +0000 (10:48 +0100)]
[BFD][AARCH64]Properly truncate no overflow checking relocation value for load/store immediate.

bfd/ChangeLog:

2018-06-20  Renlin Li  <renlin.li@arm.com>

* elfxx-aarch64.c (_bfd_aarch64_elf_resolve_relocation): Use PG_OFFSET
to resolve BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC,
BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC.

ld/ChangeLog:

2018-06-20 Renlin Li  <renlin.li@arm.com>

* testsuite/ld-aarch64/emit-relocs-115.d: Update test with new value.
* testsuite/ld-aarch64/emit-relocs-534.d: Likewise.
* testsuite/ld-aarch64/emit-relocs-555.d: Likewise.

6 years agoChange the ARM assembler's ADR and ADRl pseudo-ops so that they will only set the...
Nick Clifton [Wed, 20 Jun 2018 11:38:10 +0000 (12:38 +0100)]
Change the ARM assembler's ADR and ADRl pseudo-ops so that they will only set the bottom bit of imported thumb function symbols if the -mthumb-interwork option is active.

For more information see the email thread starting here:
https://www.sourceware.org/ml/binutils/2018-05/msg00348.html

PR 21458
* tc-arm.c (do_adr): Only set the bottom bit of an imported thumb
function symbol address if -mthumb-interwork is active.
(do_adrl): Likewise.
* doc/c-arm.texi: Update descriptions of the -mthumb-interwork
option and the ADR and ADRL pseudo-ops.
* NEWS: Mention the new behaviour of the ADR and ADRL pseudo-ops.
* testsuite/gas/arm/pr21458.d: Add -mthumb-interwork option to
assembler command line.
* testsuite/gas/arm/adr.d: Likewise.
* testsuite/gas/arm/adrl.d: Likewise.

6 years agoStop objcopy from corrupting mach-o files.
Nick Clifton [Wed, 20 Jun 2018 09:43:00 +0000 (10:43 +0100)]
Stop objcopy from corrupting mach-o files.

PR 23299
* mach-o.c (cputype): New function.
(cpusubtype): New function.
(bfd_mach_o_bfd_print_private_data): New function.  Dispalys the
values in the MACH-O file header.
(bfd_mach_o_bfd_copy_private_header_data): Copy the cputype and
cpusubtype fields from the input bfd's mach-o header to the output
bfd.
* mach-o-target.c (bfd_mach_o_bfd_print_private_bfd_data):
Redefine to bfd_mach_o_bfd_print_private_data.
* mach-o.h (bfd_mach_o_bfd_print_private_bfd_data): Prototype.

6 years agoFix problem where gold does not create base version for executables.
Cary Coutant [Wed, 20 Jun 2018 08:24:11 +0000 (01:24 -0700)]
Fix problem where gold does not create base version for executables.

gold/
PR gold/23268
* dynobj.cc (Versions::Versions): Change init for needs_base_version_.
(Versions::record_version): Add verdefs for both shared objects and
executables.
(Versions::add_def): Likewise for base version.
(Versions::add_need): Don't add base version for executables.
(Versions::version_index): Look up version for both shared objects and
executables.
* testsuite/Makefile.am (ver_test_14): New test case.
* testsuite/Makefile.in: Regenerate.
* testsuite/ver_test_14.script: New version script.
* testsuite/ver_test_14.sh: New test script.

6 years agoRISC-V: Accept constant operands in la and lla
Sebastian Huber [Tue, 19 Jun 2018 05:12:48 +0000 (07:12 +0200)]
RISC-V: Accept constant operands in la and lla

opcodes/
PR gas/23305
* riscv-opc.c (riscv_opcodes): Use new format specifier 'B' for
la and lla.

gas/
PR gas/23305
* config/tc-riscv.c (riscv_ip): Add format specifier 'B' for
constants and symbols.
* testsuite/gas/riscv/lla32.d: New file.
* testsuite/gas/riscv/lla32.s: Likewise.
* testsuite/gas/riscv/lla64-fail.d: Likewise.
* testsuite/gas/riscv/lla64-fail.l: Likewise.
* testsuite/gas/riscv/lla64-fail.s: Likewise.
* testsuite/gas/riscv/lla64.d: Likewise.
* testsuite/gas/riscv/lla64.s: Likewise.

6 years agoFix typo in most recent entry.
Cary Coutant [Wed, 20 Jun 2018 02:03:25 +0000 (19:03 -0700)]
Fix typo in most recent entry.

6 years agoReplace thread config with automatic config using ax_pthread.m4.
Cary Coutant [Wed, 20 Jun 2018 01:57:28 +0000 (18:57 -0700)]
Replace thread config with automatic config using ax_pthread.m4.

The autotools library macro (AX_PTHREAD) is now used to detect if
pthreads is present and multi-threaded linking in gold is automatically
enabled if it is found. This enables multi-threaded gold on platforms
where pthreads is enabled via other methods than just -lpthread
(e.g., MinGW).

2018-06-19  Joshua Watt  <jpewhacker@gmail.com>
    Cary Coutant  <ccoutant@gmail.com>

gold/
* configure.ac: Replace manual thread configuration with AX_PTHREAD.
Add --enable-threads=auto.
* Makefile.am (THREADFLAGS, THREADLIBS): New defines.
(AM_CFLAGS, AM_CXXFLAGS): Add $(THREADFLAGS.
(THREADSLIB): Remove; change all references to THREADLIBS.
* Makefile.in: Regenerate.
* aclocal.m4: Regenerate.
* config.in: Regenerate.
* configure: Regenerate.
* testsuite/Makefile.am (THREADSLIB): Replace with...
(THREADFLAGS, THREADLIBS): ... these.
(LDADD): Remove; add as individual defines for...
(object_unittest, binary_unittest, leb128_unittest)
(overflow_unittest): ... these tests.
(tls_test, tls_pic_test, tls_pie_test, tls_pie_pic_test)
(tls_shared_test, tls_shared_ie_test, tls_shared_gd_to_ie_test)
(tls_shared_gnu2_gd_to_ie_test, tls_shared_gnu2_test_LDFLAGS)
(tls_shared_nonpic_test_LDFLAGS): Add $(THREADFLAGS) and ($THREADLIBS).
* testsuite/Makefile.in: Regenerate.

6 years agoRemove *.stderr when "make clean".
Cary Coutant [Tue, 19 Jun 2018 23:52:54 +0000 (16:52 -0700)]
Remove *.stderr when "make clean".

gold/
* testsuite/Makefile.am (MOSTLYCLEANFILES): Add *.stderr.
* testsuite/Makefile.in: Regenerate.

6 years agoAutomatic date update in version.in
GDB Administrator [Wed, 20 Jun 2018 00:00:56 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoPR ld/22966: Fix n64 MIPS `.got.plt' range checks
Maciej W. Rozycki [Tue, 19 Jun 2018 23:37:51 +0000 (00:37 +0100)]
PR ld/22966: Fix n64 MIPS `.got.plt' range checks

The addressable signed 32-bit range for n64 MIPS `.got.plt' references
is from 0xffffffff7fff8000 to 0x7fff7fff, due to how the composition of
an LUI and an LD instruction works for address calculation in the 64-bit
addressing mode, such as when CP0.Status.UX=1.

We currently have a range check in `mips_finish_exec_plt', however it is
not correct as it verifies that the `.got.plt' start address referred is
between 0xffffffff80000000 and 0x7fffffff.  It is also implemented as an
assertion rather than a proper error message despite that the situation
can be triggered by user input.  Additionally there is no check made for
individual `.got.plt' entries referred even though they can be out of
range while the `.got.plt' start address is not.

Fix all these problems and use the correct range for the check, limiting
it to n64 output files, and then issue a proper error message both in
`mips_finish_exec_plt' and in `_bfd_mips_elf_finish_dynamic_symbol',
suggesting the use of the `-Ttext-segment=...' option that will often
work and with the default linker scripts in particular.  Add suitable
tests covering boundary cases.

bfd/
PR ld/22966
* elfxx-mips.c (_bfd_mips_elf_finish_dynamic_symbol): Verify the
`.got.plt' entry referred is in range.
(mips_finish_exec_plt): Correct the range check for `.got.plt'
start.  Replace the assertion used for that with a proper error
message.

ld/
PR ld/22966
* testsuite/ld-mips-elf/n64-plt-1.dd: New test.
* testsuite/ld-mips-elf/n64-plt-1.gd: New test.
* testsuite/ld-mips-elf/n64-plt-2.ed: New test.
* testsuite/ld-mips-elf/n64-plt-3.ed: New test.
* testsuite/ld-mips-elf/n64-plt-4.dd: New test.
* testsuite/ld-mips-elf/n64-plt-4.gd: New test.
* testsuite/ld-mips-elf/n64-plt-1.ld: New test linker script.
* testsuite/ld-mips-elf/n64-plt-2.ld: New test linker script.
* testsuite/ld-mips-elf/n64-plt-3.ld: New test linker script.
* testsuite/ld-mips-elf/n64-plt-4.ld: New test linker script.
* testsuite/ld-mips-elf/n64-plt.s: New test source.
* testsuite/ld-mips-elf/n64-plt-lib.s: New test source.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.

6 years agoMIPS/BFD: Fix `loc' formatting in `_bfd_mips_elf_finish_dynamic_symbol'
Maciej W. Rozycki [Tue, 19 Jun 2018 23:37:51 +0000 (00:37 +0100)]
MIPS/BFD: Fix `loc' formatting in `_bfd_mips_elf_finish_dynamic_symbol'

Fix a formatting fallout in `_bfd_mips_elf_finish_dynamic_symbol' from
commit ce558b89b15a ("Delete duplicate target short-cuts to dynamic
sections").

bfd/
* elfxx-mips.c (_bfd_mips_elf_finish_dynamic_symbol): Fix
formatting.

6 years agoMIPS/LD/testsuite: XFAIL DT_TEXTREL map file warning test
Maciej W. Rozycki [Tue, 19 Jun 2018 23:37:51 +0000 (00:37 +0100)]
MIPS/LD/testsuite: XFAIL DT_TEXTREL map file warning test

Remove:

FAIL: DT_TEXTREL map file warning

introduced with commit 63c1f59d6655 ("readonly_dynrelocs"), coming from
the lack of a "dynamic relocation against `foo' in read-only section
`.rodata'" warning message produced.

The cause of the failure is that for sections which have dynamic
relocations attached the MIPS backend sets SHF_WRITE, in
`mips_elf_create_dynamic_relocation', yielding:

$ readelf -S textrel.so | grep rodata
  [ 8] .rodata           PROGBITS        00000254 000254 000004 00  WA  0   0  1
$

so the section is read/write and therefore there is nothing to warn
about.

This arrangement came from commit 7403cb6305f5 ("PATCH for N32 ABI"),
<https://sourceware.org/ml/binutils/1999-q2/msg00375.html>, i.e. for all
practical purposes it has been there since forever, and therefore it can
be considered a part of the ABI and the test case irrelevant for MIPS
targets.

We don't have a clean way to request UNSUPPORTED result, which would be
the most appropriate here, so just XFAIL the test instead.

ld/
* testsuite/ld-elf/shared.exp: XFAIL DT_TEXTREL map file warning
test for `mips*-*-*'.

6 years agoBump to autoconf 2.69 and automake 1.15.1
Simon Marchi [Tue, 19 Jun 2018 20:54:48 +0000 (16:54 -0400)]
Bump to autoconf 2.69 and automake 1.15.1

When trying to run the update-gnulib.sh script in gdb, I get this:

Error: Wrong automake version (Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\${ <-- HERE ([^      =:+{}]+)}/ at /opt/automake/1.11.1/bin/automake line 4113.), we need 1.11.1.
Aborting.

Apparently, it's an issue with a regex in automake that triggers a
warning starting with Perl 5.22.  It has been fixed in automake 1.15.1.
So I think it's a good excuse to bump the versions of autoconf and
automake used in the gnulib import.  And to avoid requiring multiple
builds of autoconf/automake, it was suggested that we bump the required
version of those tools for all binutils-gdb.

For autoconf, the 2.69 version is universally available, so it's an easy
choice.  For automake, different distros and distro versions have
different automake versions.  But 1.15.1 seems to be the most readily
available as a package.  In any case, it's easy to build it from source.

I removed the version checks from AUTOMAKE_OPTIONS and AC_PREREQ,
because I don't think they are useful in our case.  They only specify a
lower bound for the acceptable version of automake/autoconf.  That's
useful if you let the user choose the version of the tool they want to
use, but want to set a minimum version (because you use a feature that
was introduced in that version).  In our case, we force people to use a
specific version anyway.  For the autoconf version, we have the check in
config/override.m4 that enforces the version we want.  It will be one
less thing to update next time we change autotools version.

I hit a few categories of problems that required some changes.  They are
described below along with the chosen solutions.

Problem 1:

  configure.ac:17: warning: AM_INIT_AUTOMAKE: two- and three-arguments forms are deprecated.  For more info, see:
  configure.ac:17: http://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_005fINIT_005fAUTOMAKE-invocation

Solution 1:

  Adjust the code based on the example at that URL.

Problem 2 (in zlib/):

  Makefile.am: error: required file './INSTALL' not found
  Makefile.am:   'automake --add-missing' can install 'INSTALL'
  Makefile.am: error: required file './NEWS' not found
  Makefile.am: error: required file './AUTHORS' not found
  Makefile.am: error: required file './COPYING' not found
  Makefile.am:   'automake --add-missing' can install 'COPYING'

Solution 2:

  Add the foreign option to AUTOMAKE_OPTIONS.

Problem 3:

  doc/Makefile.am:20: error: support for Cygnus-style trees has been removed

Solution 3:

  Remove the cygnus options.

Problem 4:

  Makefile.am:656: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')

Solution 4:

  Rename "INCLUDES = " to "AM_CPPFLAGS += " (because AM_CPPFLAGS is
  already defined earlier).

Problem 5:

  doc/Makefile.am:71: warning: suffix '.texinfo' for Texinfo files is discouraged; use '.texi' instead
  doc/Makefile.am: warning: Oops!
  doc/Makefile.am:     It appears this file (or files included by it) are triggering
  doc/Makefile.am:     an undocumented, soon-to-be-removed automake hack.
  doc/Makefile.am:     Future automake versions will no longer place in the builddir
  doc/Makefile.am:     (rather than in the srcdir) the generated '.info' files that
  doc/Makefile.am:     appear to be cleaned, by e.g. being listed in CLEANFILES or
  doc/Makefile.am:     DISTCLEANFILES.
  doc/Makefile.am:     If you want your '.info' files to be placed in the builddir
  doc/Makefile.am:     rather than in the srcdir, you have to use the shiny new
  doc/Makefile.am:     'info-in-builddir' automake option.

Solution 5:

  Rename .texinfo files to .texi.

Problem 6:

  doc/Makefile.am: warning: Oops!
  doc/Makefile.am:     It appears this file (or files included by it) are triggering
  doc/Makefile.am:     an undocumented, soon-to-be-removed automake hack.
  doc/Makefile.am:     Future automake versions will no longer place in the builddir
  doc/Makefile.am:     (rather than in the srcdir) the generated '.info' files that
  doc/Makefile.am:     appear to be cleaned, by e.g. being listed in CLEANFILES or
  doc/Makefile.am:     DISTCLEANFILES.
  doc/Makefile.am:     If you want your '.info' files to be placed in the builddir
  doc/Makefile.am:     rather than in the srcdir, you have to use the shiny new
  doc/Makefile.am:     'info-in-builddir' automake option.

Solution 6:

  Remove the hack at the bottom of doc/Makefile.am and use
  the info-in-builddir automake option.

Problem 7:

  doc/Makefile.am:35: error: required file '../texinfo.tex' not found
  doc/Makefile.am:35:   'automake --add-missing' can install 'texinfo.tex'

Solution 7:

  Use the no-texinfo.tex automake option.  We also have one in
  texinfo/texinfo.tex, not sure if we should point to that, or move it
  (or a newer version of it added with automake --add-missing) to
  top-level.

Problem 8:

  Makefile.am:131: warning: source file 'config/tc-aarch64.c' is in a subdirectory,
  Makefile.am:131: but option 'subdir-objects' is disabled
  automake: warning: possible forward-incompatibility.
  automake: At least a source file is in a subdirectory, but the 'subdir-objects'
  automake: automake option hasn't been enabled.  For now, the corresponding output
  automake: object file(s) will be placed in the top-level directory.  However,
  automake: this behaviour will change in future Automake versions: they will
  automake: unconditionally cause object files to be placed in the same subdirectory
  automake: of the corresponding sources.
  automake: You are advised to start using 'subdir-objects' option throughout your
  automake: project, to avoid future incompatibilities.

Solution 8:

  Use subdir-objects, that means adjusting references to some .o that will now
  be in config/.

Problem 9:

  configure.ac:375: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
  ../../lib/autoconf/lang.m4:193: AC_LANG_CONFTEST is expanded from...
  ../../lib/autoconf/general.m4:2601: _AC_COMPILE_IFELSE is expanded from...
  ../../lib/autoconf/general.m4:2617: AC_COMPILE_IFELSE is expanded from...
  ../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
  ../../lib/autoconf/general.m4:2042: AC_CACHE_VAL is expanded from...
  ../../lib/autoconf/general.m4:2063: AC_CACHE_CHECK is expanded from...
  configure.ac:375: the top level

Solution 9:

  Use AC_LANG_SOURCE, or use proper quoting.

Problem 10 (in intl/):

  configure.ac:7: warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
  /usr/share/aclocal/threadlib.m4:36: gl_THREADLIB_EARLY_BODY is expanded from...
  /usr/share/aclocal/threadlib.m4:29: gl_THREADLIB_EARLY is expanded from...
  /usr/share/aclocal/threadlib.m4:318: gl_THREADLIB is expanded from...
  /usr/share/aclocal/lock.m4:9: gl_LOCK is expanded from...
  /usr/share/aclocal/intl.m4:211: gt_INTL_SUBDIR_CORE is expanded from...
  /usr/share/aclocal/intl.m4:25: AM_INTL_SUBDIR is expanded from...
  /usr/share/aclocal/gettext.m4:57: AM_GNU_GETTEXT is expanded from...
  configure.ac:7: the top level

Solution 10:

  Add AC_USE_SYSTEM_EXTENSIONS in configure.ac.

ChangeLog:

* libtool.m4: Use AC_LANG_SOURCE.
* configure.ac: Remove AC_PREREQ, use AC_LANG_SOURCE.
* README-maintainer-mode: Update version requirements.
* ar-lib: New file.
* test-driver: New file.
* configure: Re-generate.

bfd/ChangeLog:

* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.11.
(INCLUDES): Rename to ...
(AM_CPPFLAGS): ... this.
* configure.ac: Remove AC_PREREQ.
* doc/Makefile.am (AUTOMAKE_OPTIONS): Remove 1.9, cygnus, add
info-in-builddir no-texinfo.tex.
(info_TEXINFOS): Rename bfd.texinfo to bfd.texi.
* doc/bfd.texinfo: Rename to ...
* doc/bfd.texi: ... this.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* config.in: Re-generate.
* configure: Re-generate.
* doc/Makefile.in: Re-generate.

binutils/ChangeLog:

* configure.ac: Remove AC_PREREQ.
* doc/Makefile.am (AUTOMAKE_OPTIONS): Remove cygnus, add
info-in-builddir no-texinfo.tex.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* config.in: Re-generate.
* configure: Re-generate.
* doc/Makefile.in: Re-generate.

config/ChangeLog:

* override.m4 (_GCC_AUTOCONF_VERSION): Bump from 2.64 to 2.69.

etc/ChangeLog:

* configure.in: Remove AC_PREREQ.
* configure: Re-generate.

gas/ChangeLog:

* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.11, add subdir-objects.
(TARG_CPU_O, OBJ_FORMAT_O, ATOF_TARG_O): Add config/ prefix.
* configure.ac (TARG_CPU_O, OBJ_FORMAT_O, ATOF_TARG_O, emfiles,
extra_objects): Add config/ prefix.
* doc/as.texinfo: Rename to...
* doc/as.texi: ... this.
* doc/Makefile.am: Rename as.texinfo to as.texi throughout.
Remove DISTCLEANFILES hack.
(AUTOMAKE_OPTIONS): Remove 1.8, cygnus, add no-texinfo.tex and
info-in-builddir.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* config.in: Re-generate.
* configure: Re-generate.
* doc/Makefile.in: Re-generate.

gdb/ChangeLog:

* common/common-defs.h (PACKAGE_NAME, PACKAGE_VERSION,
PACKAGE_STRING, PACKAGE_TARNAME): Undefine.
* configure.ac: Remove AC_PREREQ, add missing quoting.
* gnulib/configure.ac: Modernize usage of
AC_INIT/AM_INIT_AUTOMAKE.  Remove AC_PREREQ.
* gnulib/update-gnulib.sh (AUTOCONF_VERSION): Bump to 2.69.
(AUTOMAKE_VERSION): Bump to 1.15.1.
* configure: Re-generate.
* config.in: Re-generate.
* aclocal.m4: Re-generate.
* gnulib/aclocal.m4: Re-generate.
* gnulib/config.in: Re-generate.
* gnulib/configure: Re-generate.
* gnulib/import/Makefile.in: Re-generate.

gdb/gdbserver/ChangeLog:

* configure.ac: Remove AC_PREREQ, add missing quoting.
* configure: Re-generate.
* config.in: Re-generate.
* aclocal.m4: Re-generate.

gdb/testsuite/ChangeLog:

* configure.ac: Remove AC_PREREQ.
* configure: Re-generate.

gold/ChangeLog:

* configure.ac: Remove AC_PREREQ, add missing quoting and usage
of AC_LANG_SOURCE.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* configure: Re-generate.
* testsuite/Makefile.in: Re-generate.

gprof/ChangeLog:

* configure.ac: Remove AC_PREREQ.
* Makefile.am: Remove DISTCLEANFILES hack.
(AUTOMAKE_OPTIONS): Remove 1.11, add info-in-builddir.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* configure: Re-generate.
* gconfig.in: Re-generate.

intl/ChangeLog:

* configure.ac: Add AC_USE_SYSTEM_EXTENSIONS, remove AC_PREREQ.
* configure: Re-generate.
* config.h.in: Re-generate.
* aclocal.m4: Re-generate.

ld/ChangeLog:

* configure.ac: Remove AC_PREREQ.
* Makefile.am: Remove DISTCLEANFILES hack, rename ld.texinfo to
ld.texi, ldint.texinfo to ldint.texi throughout.
(AUTOMAKE_OPTIONS): Add info-in-builddir.
* README: Rename ld.texinfo to ld.texi, ldint.texinfo to
ldint.texi throughout.
* gen-doc.texi: Likewise.
* h8-doc.texi: Likewise.
* ld.texinfo: Rename to ...
* ld.texi: ... this.
* ldint.texinfo: Rename to ...
* ldint.texi: ... this.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* config.in: Re-generate.
* configure: Re-generate.

libdecnumber/ChangeLog:

* configure.ac: Remove AC_PREREQ.
* configure: Re-generate.
* aclocal.m4.

libiberty/ChangeLog:

* configure.ac: Remove AC_PREREQ.
* configure: Re-generate.
* config.in: Re-generate.

opcodes/ChangeLog:

* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.11.
* configure.ac: Remove AC_PREREQ.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* configure: Re-generate.

readline/ChangeLog.gdb:

* configure: Re-generate.
* examples/rlfe/configure: Re-generate.

sim/ChangeLog:

* All configure.ac: Remove AC_PREREQ.
* All configure: Re-generate.

zlib/ChangeLog.bin-gdb:

* configure.ac: Modernize AC_INIT call, remove AC_PREREQ.
* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.8, cygnus, add
foreign.
* Makefile.in: Re-generate.
* aclocal.m4: Re-generate.
* configure: Re-generate.

6 years agoinclude: Sync with GCC
Simon Marchi [Mon, 18 Jun 2018 15:31:15 +0000 (11:31 -0400)]
include: Sync with GCC

Bring changes from GCC in shared headers.

include/ChangeLog:

Sync with GCC

2018-05-24  Tom Rix  <trix@juniper.net>

* dwarf2.def (DW_FORM_strx*, DW_FORM_addrx*): New.

2017-11-20  Kito Cheng  <kito.cheng@gmail.com>

* longlong.h [__riscv] (__umulsidi3): Define.
[__riscv] (umul_ppmm): Likewise.
[__riscv] (__muluw3): Likewise.

6 years agoSilence -Wmaybe-uninitialized warning in minsyms.c:lookup_minimal_symbol_by_pc_section
Pedro Alves [Tue, 19 Jun 2018 17:16:40 +0000 (18:16 +0100)]
Silence -Wmaybe-uninitialized warning in minsyms.c:lookup_minimal_symbol_by_pc_section

Compiling with GCC 8.1 shows this warning:

  gdb/minsyms.c: In function 'bound_minimal_symbol lookup_minimal_symbol_by_pc_section(CORE_ADDR, obj_section*, lookup_msym_prefer)':
  gdb/minsyms.c:825:40: warning: 'want_type' may be used uninitialized in this function [-Wmaybe-uninitialized]
   && MSYMBOL_TYPE (&msymbol[hi]) != want_type

That warning is a false positive, because the switch that converts
enum lookup_msym_prefer values to enum enum minimal_symbol_type values
has a case for every lookup_msym_prefer enumerator:

  switch (prefer)
   {
    case lookup_msym_prefer::TEXT:
      want_type = mst_text;
      break;
    case lookup_msym_prefer::TRAMPOLINE:
      want_type = mst_solib_trampoline;
      break;
    case lookup_msym_prefer::GNU_IFUNC:
      want_type = mst_text_gnu_ifunc;
      break;
    }

The problem is that GCC assumes that enum variables may hold values
other than the named enumerators (like e.g., "lookup_msym_prefer
prefer = (lookup_msym_prefer) 10;").

Rework the code a bit, adding a gdb_assert to make it explicit to the
compiler that want_type is initialized in all normal-return paths.

gdb/ChangeLog:
2018-06-19  Pedro Alves  <palves@redhat.com>

* minsyms.c (msym_prefer_to_msym_type): New, factored out from ...
(lookup_minimal_symbol_by_pc_section): ... here with
gdb_assert_not_reached added.

6 years agoChange inline frame breakpoint skipping logic (fix gdb.gdb/selftest.exp)
Pedro Alves [Tue, 19 Jun 2018 15:30:13 +0000 (16:30 +0100)]
Change inline frame breakpoint skipping logic (fix gdb.gdb/selftest.exp)

Currently, gdb.gdb/selftest.exp fails if you build GDB with
optimization (-O2, etc.).

The reason is that after setting a breakpoint in captured_main, we
stop at:
 ...
 Breakpoint 1, captured_main_1 (context=<optimized out>) at src/gdb/main.c:492
 ...
while selftest_setup expects a stop at captured_main.

Here, captured_main_1 has been inlined into captured_main, and
captured_main has been inlined into gdb_main:

 ...
 $ nm ./build/gdb/gdb | egrep ' [tT] .*captured_main|gdb_main' | c++filt
 000000000061b950 T gdb_main(captured_main_args*)
 ...

Indeed, the two inlined functions show up in the backtrace:

 ...
 (gdb) bt
 #0  captured_main_1 (context=<optimized out>) at main.c:492
 #1  captured_main (data=<optimized out>) at main.c:1147
 #2  gdb_main (args=args@entry=0x7fffffffdb80) at main.c:1173
 #3  0x000000000040fea5 in main (argc=<optimized out>, argv=<optimized out>)
     at gdb.c:32
 ...

We're now stopping at captured_main_1 because commit ddfe970e6bec
("Don't elide all inlined frames") makes GDB present a stop at the
innermost inlined frame if the program stopped by a user breakpoint.

Now, the selftest.exp testcase explicitly asks to stop at
"captured_main", not "captured_main_1", so I'm thinking that it's
GDB'S behavior that should be improved.  That is what this commit
does, by only showing a stop at an inline frame if the user breakpoint
was set in that frame's block.

Before this commit:

 (top-gdb) b captured_main
 Breakpoint 1 at 0x792f99: file src/gdb/main.c, line 492.
 (top-gdb) r
 Starting program: build/gdb/gdb

 Breakpoint 1, captured_main_1 (context=<optimized out>) at src/gdb/main.c:492
 492       lim_at_start = (char *) sbrk (0);
 (top-gdb)

After this commit, we now instead get:

 (top-gdb) b captured_main
 Breakpoint 1 at 0x791339: file src/gdb/main.c, line 492.
 (top-gdb) r
 Starting program: build/gdb/gdb

 Breakpoint 1, captured_main (data=<optimized out>) at src/gdb/main.c:1147
 1147      captured_main_1 (context);
 (top-gdb)

and:

 (top-gdb) b captured_main_1
 Breakpoint 2 at 0x791339: file src/gdb/main.c, line 492.
 (top-gdb) r
 Starting program: build/gdb/gdb
 Breakpoint 2, captured_main_1 (context=<optimized out>) at src/gdb/main.c:492
 492       lim_at_start = (char *) sbrk (0);
 (top-gdb)

Note that both captured_main and captured_main_1 resolved to the same
address, 0x791339.  That is necessary to trigger the issue in
question.  The gdb.base/inline-break.exp testcase currently does not
exercise that, but the new test added by this commit does.  That new
test fails without the GDB fix and passes with the fix.  No
regressions on x86-64 GNU/Linux.

While at it, the THIS_PC comparison in stopped_by_user_bp_inline_frame
is basically a nop, so just remove it -- if a software or hardware
breakpoint explains the stop, then it must be that it was installed at
the current PC.

gdb/ChangeLog:
2018-06-19  Pedro Alves  <palves@redhat.com>

* inline-frame.c (stopped_by_user_bp_inline_frame): Replace PC
parameter with a block parameter.  Compare location's block symbol
with the frame's block instead of addresses.
(skip_inline_frames): Pass the current block instead of the
frame's address.  Break out as soon as we determine the frame
should not be skipped.

gdb/testsuite/ChangeLog:
2018-06-19  Pedro Alves  <palves@redhat.com>

* gdb.opt/inline-break.c (func_inline_callee, func_inline_caller)
(func_extern_caller): New.
(main): Call func_extern_caller.
* gdb.opt/inline-break.exp: Add tests for inline frame skipping
logic change.

6 years agoFix ChangeLog entry
Andreas Schwab [Tue, 19 Jun 2018 14:39:40 +0000 (16:39 +0200)]
Fix ChangeLog entry

6 years agoreadelf: Handle more RISC-V relocations
Andreas Schwab [Mon, 18 Jun 2018 08:29:31 +0000 (10:29 +0200)]
readelf: Handle more RISC-V relocations

* readelf.c (is_16bit_abs_reloc): Handle R_RISCV_SET16.
(is_8bit_abs_reloc): New function.
(is_6bit_abs_reloc): New function.
(is_6bit_inplace_sub_reloc): New function.
(apply_relocations): Use them.  Handle 6-bit relocations.

6 years agoFix ChangeLog merge conflict
Simon Marchi [Tue, 19 Jun 2018 00:44:50 +0000 (20:44 -0400)]
Fix ChangeLog merge conflict

I noticed that gdb/testsuite/ChangeLog had some conflict markers... this
patch fixes it.

6 years agoAutomatic date update in version.in
GDB Administrator [Tue, 19 Jun 2018 00:01:05 +0000 (00:01 +0000)]
Automatic date update in version.in

6 years agoThis was already applied on the GCC side.
Eric Botcazou [Mon, 18 Jun 2018 22:05:40 +0000 (00:05 +0200)]
This was already applied on the GCC side.

* Makefile.def (fortran): Add check-target-libgomp-fortran.
* Makefile.tpl (check-target-libgomp-fortran): New phony target.
* Makefile.in: Regenerate.

* configure: Regenerate.

6 years agoFix failure to find member of a typedef base class
Weimin Pan [Mon, 18 Jun 2018 21:15:13 +0000 (21:15 +0000)]
Fix failure to find member of a typedef base class

The test case below demonstrates the problem, as described in this PR's Comment 5:

typedef struct {
        int x;
} A;

struct C : A {
        int y;
};

int main()
{
        C c;
        return 55;
}

$ gdb a.out
(gdb) ptype C::x
Internal error: non-aggregate type to value_struct_elt_for_reference

In value_struct_elt_for_reference(), need to call check_typedef() on
the aggregate type to handle the case of *curtype being ptr->typedef.

Tested on x86_64-linux. No regressions.

6 years agoRemove current_traceframe declaration
Simon Marchi [Mon, 18 Jun 2018 20:21:30 +0000 (16:21 -0400)]
Remove current_traceframe declaration

The variable has been removed in c12a508 ("Add client_state struct."),
remove the leftover declaration.

gdb/gdbserver/ChangeLog:

* tracepoint.h (current_traceframe): Remove declaration.

6 years agoUse unique_xmalloc_ptr in solib-aix.c
Tom Tromey [Sun, 27 May 2018 15:33:24 +0000 (09:33 -0600)]
Use unique_xmalloc_ptr in solib-aix.c

This removes a cleanup from solib-aix.c via unique_xmalloc_ptr.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* solib-aix.c (solib_aix_get_section_offsets): Return
unique_xmalloc_ptr.
(solib_aix_solib_create_inferior_hook): Update.

6 years agoUse unique_xmalloc_ptr in darwin_current_sos
Tom Tromey [Sun, 27 May 2018 15:31:26 +0000 (09:31 -0600)]
Use unique_xmalloc_ptr in darwin_current_sos

This changes darwin_current_sos to use unique_xmalloc_ptr rather than
a cleanup.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* solib-darwin.c (darwin_current_sos): Use unique_xmalloc_ptr.

6 years agoUse unique_xmalloc_ptr in two solib functions
Tom Tromey [Sun, 27 May 2018 15:27:56 +0000 (09:27 -0600)]
Use unique_xmalloc_ptr in two solib functions

This removes a couple of cleanups by using unique_xmalloc_ptr instead.
These two changes are combined because the two functions are very
similar.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* solib-frv.c (frv_relocate_main_executable): Use
unique_xmalloc_ptr.
* solib-dsbt.c (dsbt_relocate_main_executable): Use
unique_xmalloc_ptr.

6 years agoRemove resume_section_map_updates_cleanup
Tom Tromey [Tue, 29 May 2018 19:51:58 +0000 (13:51 -0600)]
Remove resume_section_map_updates_cleanup

This removes resume_section_map_updates_cleanup, replacing it with a
scoped_restore.

Tested by the buildbot.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* objfiles.h (inhibit_section_map_updates): Update.
(resume_section_map_updates, resume_section_map_updates_cleanup):
Remove.
* solib-svr4.c (svr4_handle_solib_event): Update.
* objfiles.c (inhibit_section_map_updates): Return
scoped_restore_tmpl<int>.
(resume_section_map_updates, resume_section_map_updates_cleanup):
Remove.

6 years agoUse unique_xmalloc_ptr for read_string
Tom Tromey [Mon, 21 May 2018 18:35:59 +0000 (12:35 -0600)]
Use unique_xmalloc_ptr for read_string

This changes read_string's "buffer" out-parameter to be a
unique_xmalloc_ptr, then updates the users.  This allows for the
removal of some cleanups.

I chose unique_xmalloc_ptr rather than byte_vector here due to the way
Guile unwinding seems to work.

Tested by the buildbot.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* valprint.h (read_string): Update.
* valprint.c (read_string): Change type of "buffer".
(val_print_string): Update.
* python/py-value.c (valpy_string): Update.
* language.h (struct language_defn) <la_get_string>: Change
type of "buffer".
(default_get_string, c_get_string): Update.
* language.c (default_get_string): Change type of "buffer".
* guile/scm-value.c (gdbscm_value_to_string): Update.
* c-lang.c (c_get_string): Change type of "buffer".

6 years agoRemove cleanups from ser-mingw.c
Tom Tromey [Thu, 7 Jun 2018 22:49:57 +0000 (16:49 -0600)]
Remove cleanups from ser-mingw.c

This removes the only cleanup from ser-mingw.c, replacing it with a
specialization of std::unique_ptr.

Tested by the buildbot.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* ser-mingw.c (struct pipe_state_destroyer): New.
(pipe_state_up): New typedef.
(cleanup_pipe_state): Remove.
(pipe_windows_open): Use pipe_state_up.  Don't release argv.

6 years agoRemove la_error
Tom Tromey [Sat, 2 Jun 2018 05:02:37 +0000 (23:02 -0600)]
Remove la_error

While working on the parser code, I noticed that yyerror is exported
from each parser.  It is used by this code in parse.c:

   TRY
     {
       if (lang->la_parser (&ps))
         lang->la_error (NULL);
     }

However, it seems to me that la_error will never be called here,
because in every case, la_parser throws an exception on error -- each
implementation of yyerror just calls error.

So, this patch removes la_error and makes all the yyerror functions
static.  This is handy primarily because it makes it simpler to make
the expression parsers pure.

Tested by the buildbot.

gdb/ChangeLog
2018-06-18  Tom Tromey  <tom@tromey.com>

* rust-lang.h (rust_yyerror): Don't declare.
* rust-lang.c (rust_language_defn): Update.
* rust-exp.y (yyerror): Now static.
* parse.c (parse_exp_in_context_1): Update.
* p-lang.h (p_yyerror): Don't declare.
* p-lang.c (p_language_defn): Update.
* p-exp.y (yyerror): Now static.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.h (m2_yyerror): Don't declare.
* m2-lang.c (m2_language_defn): Update.
* m2-exp.y (yyerror): Now static.
* language.h (struct language_defn) <la_error>: Remove.
* language.c (unk_lang_error): Remove.
(unknown_language_defn, auto_language_defn): Remove.
* go-lang.h (go_yyerror): Don't declare.
* go-lang.c (go_language_defn): Update.
* go-exp.y (yyerror): Now static.
* f-lang.h (f_yyerror): Don't declare.
* f-lang.c (f_language_defn): Update.
* f-exp.y (yyerror): Now static.
* d-lang.h (d_yyerror): Don't declare.
* d-lang.c (d_language_defn): Update.
* d-exp.y (yyerror): Now static.
* c-lang.h (c_yyerror): Don't declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* c-exp.y (yyerror): Now static.
* ada-lang.h (ada_yyerror): Don't declare.
* ada-lang.c (ada_language_defn): Update.
* ada-exp.y (yyerror): Now static.

6 years agoconfigure.ac: Sync with GCC
Simon Marchi [Mon, 18 Jun 2018 13:37:12 +0000 (09:37 -0400)]
configure.ac: Sync with GCC

Here's an extra one... I'll need to make some changes to the root
configure.ac.  This patch makes sure it is in sync with GCC first.

ChangeLog:

* configure.ac: Sync with GCC, remove MPX-related things.

6 years agolibdecnumber: Sync with GCC
Simon Marchi [Sat, 16 Jun 2018 03:07:44 +0000 (23:07 -0400)]
libdecnumber: Sync with GCC

6 years agozlib: Sync with GCC
Simon Marchi [Mon, 18 Jun 2018 13:37:44 +0000 (09:37 -0400)]
zlib: Sync with GCC

zlib/ChangeLog.bin-gdb:

Sync with FSF GCC sources.

6 years agolibiberty: Sync with GCC
Simon Marchi [Sat, 16 Jun 2018 03:07:42 +0000 (23:07 -0400)]
libiberty: Sync with GCC

Also sync include/simple-object.h, which goes together with the change
in libiberty.

6 years agoconfig: Sync with GCC
Simon Marchi [Mon, 18 Jun 2018 13:32:39 +0000 (09:32 -0400)]
config: Sync with GCC

... and re-generate all possible configure files, since they may depend
on things in config/.

config/ChangeLog:

Sync with GCC
2018-06-08  Martin Liska  <mliska@suse.cz>

* bootstrap-mpx.mk: Remove.

2018-05-10  Martin Liska  <mliska@suse.cz>

PR bootstrap/64914
* bootstrap-ubsan.mk: Define UBSAN_BOOTSTRAP.

2018-05-09  Joshua Watt <jpewhacker@gmail.com>

        * ax_pthread.m4: Add file.

2018-05-08  Richard Biener  <rguenther@suse.de>

PR bootstrap/85571
* bootstrap-lto-noplugin.mk: Disable compare.
* bootstrap-lto.mk: Supply contrib/compare-lto for do-compare.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

PR bootstrap/85490
* bootstrap-cet.mk (STAGE4_CFLAGS): New.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

PR target/85485
* bootstrap-cet.mk (STAGE2_CFLAGS): Remove -mcet.
(STAGE3_CFLAGS): Likewise.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

PR target/85485
* cet.m4 (GCC_CET_FLAGS): Replace -mcet with -mshstk.

2018-04-19  Jakub Jelinek  <jakub@redhat.com>

* cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace
--enable-cet=default with --enable-cet=auto.

2018-04-18  David Malcolm  <dmalcolm@redhat.com>

PR jit/85384
* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.

6 years agoBuild ifunc tests when non-native
Alan Modra [Mon, 18 Jun 2018 07:12:23 +0000 (16:42 +0930)]
Build ifunc tests when non-native

Plus a number of fixes to the pr23169 tests.

* testsuite/lib/ld-lib.exp (check_ifunc_available): Pass without
running executable when non-native.
(check_ifunc_attribute_available): Likewise.
* testsuite/ld-ifunc/pr23169a.rd: Remove extraneous lines.  Match
st_other strings.  Pass when func is an ifunc.
* testsuite/ld-ifunc/pr23169b.rd: Remove extraneous lines.  Correct
reloc regexp.  Correct match-anything line.
* testsuite/ld-ifunc/pr23169c.rd: Remove extraneous lines.  Match
st_other strings.

6 years agoAdd support for the TLV relocation generated by LLVM for x86_64 MACH-O targets.
Mephi [Mon, 18 Jun 2018 11:56:44 +0000 (12:56 +0100)]
Add support for the TLV relocation generated by LLVM for x86_64 MACH-O targets.

PR 23297
* mach-o-x86-64.c (x86_64_howto_table): Add entry for
BFD_RELOC_MACH_O_X86_64_RELOC_TLV.
(bfd_mach_o_x86_64_canonicalize_one_reloc): Handle the new reloc.
(bfd_mach_o_x86_64_swap_reloc_out): Likewise.
* reloc.c (BFD_RELOC_MACH_O_X86_64_TV): New entry.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.

6 years agoPtrace support for AArch64 SVE gdbserver
Alan Hayward [Fri, 15 Jun 2018 11:23:23 +0000 (12:23 +0100)]
Ptrace support for AArch64 SVE gdbserver

Add checks to detect SVE tdesc. Easiest way to do this is by checking the
size of the vector registers.

Use the common aarch64 ptrace copy functions for reading/writing registers.
A wrapper is required due to the common functions using reg_buffer_common.

gdbserver/
* linux-aarch64-low.c (is_sve_tdesc): New function.
(aarch64_sve_regs_copy_to_regcache): Likewise.
(aarch64_sve_regs_copy_from_regcache):  Likewise.
(aarch64_regs_info): Add SVE checks.
(initialize_low_arch): Initialize SVE.

6 years agoPtrace support for Aarch64 SVE
Alan Hayward [Fri, 15 Jun 2018 11:21:31 +0000 (12:21 +0100)]
Ptrace support for Aarch64 SVE

Add support for reading and writing registers for Aarch64 SVE.

We need to support the cases where the kernel only gives us a
fpsimd structure. This occurs when there is no active SVE state
in the kernel (for example, after starting a new process).

Added checks to make sure the vector length has not changed whilst
the process is running.

gdb/
* aarch64-linux-nat.c (fetch_sveregs_from_thread): New function.
(store_sveregs_to_thread): Likewise.
(aarch64_linux_fetch_inferior_registers): Check for SVE.
(aarch64_linux_store_inferior_registers): Likewise.
* nat/aarch64-sve-linux-ptrace.c (aarch64_sve_get_sveregs): New
function.
(aarch64_sve_regs_copy_to_regcache): Likewise.
(aarch64_sve_regs_copy_from_regcache): Likewise.
* nat/aarch64-sve-linux-ptrace.h (aarch64_sve_get_sveregs): New
declaration.
(aarch64_sve_regs_copy_to_regcache): Likewise.
(aarch64_sve_regs_copy_from_regcache): Likewise.
(sve_context): Structure from Linux headers.
(SVE_SIG_ZREGS_SIZE): Define from Linux headers.
(SVE_SIG_ZREG_SIZE): Likewise.
(SVE_SIG_PREG_SIZE): Likewise.
(SVE_SIG_FFR_SIZE): Likewise.
(SVE_SIG_REGS_OFFSET): Likewise.
(SVE_SIG_ZREGS_OFFSET): Likewise.
(SVE_SIG_ZREG_OFFSET): Likewise.
(SVE_SIG_ZREGS_SIZE): Likewise.
(SVE_SIG_PREGS_OFFSET): Likewise.
(SVE_SIG_PREG_OFFSET): Likewise.
(SVE_SIG_PREGS_SIZE): Likewise.
(SVE_SIG_FFR_OFFSET): Likewise.
(SVE_SIG_REGS_SIZE): Likewise.
(SVE_SIG_CONTEXT_SIZE): Likewise.
(SVE_PT_REGS_MASK): Likewise.
(SVE_PT_REGS_FPSIMD): Likewise.
(SVE_PT_REGS_SVE): Likewise.
(SVE_PT_VL_INHERIT): Likewise.
(SVE_PT_VL_ONEXEC): Likewise.
(SVE_PT_REGS_OFFSET): Likewise.
(SVE_PT_FPSIMD_OFFSET): Likewise.
(SVE_PT_FPSIMD_SIZE): Likewise.
(SVE_PT_SVE_ZREG_SIZE): Likewise.
(SVE_PT_SVE_PREG_SIZE): Likewise.
(SVE_PT_SVE_FFR_SIZE): Likewise.
(SVE_PT_SVE_FPSR_SIZE): Likewise.
(SVE_PT_SVE_FPCR_SIZE): Likewise.
(__SVE_SIG_TO_PT): Likewise.
(SVE_PT_SVE_OFFSET): Likewise.
(SVE_PT_SVE_ZREGS_OFFSET): Likewise.
(SVE_PT_SVE_ZREG_OFFSET): Likewise.
(SVE_PT_SVE_ZREGS_SIZE): Likewise.
(SVE_PT_SVE_PREGS_OFFSET): Likewise.
(SVE_PT_SVE_PREG_OFFSET): Likewise.
(SVE_PT_SVE_PREGS_SIZE): Likewise.
(SVE_PT_SVE_FFR_OFFSET): Likewise.
(SVE_PT_SVE_FPSR_OFFSET): Likewise.
(SVE_PT_SVE_FPCR_OFFSET): Likewise.
(SVE_PT_SVE_SIZE): Likewise.
(SVE_PT_SIZE): Likewise.
(HAS_SVE_STATE): New define.

gdbserver/
* Makefile.in: Add aarch64-sve-linux-ptrace.c.

6 years agoAdd Aarch64 SVE compatibility macros
Alan Hayward [Thu, 14 Jun 2018 09:10:03 +0000 (10:10 +0100)]
Add Aarch64 SVE compatibility macros

This header provides compatibility support for SVE allow building
even when the underlying host system lacks support for SVE.
If the binary is then run on an SVE-enabled kernel then support
will automatically be available.

gdb/
* nat/aarch64-sve-linux-sigcontext.h: New file.
* nat/aarch64-sve-linux-ptrace.h (SVE_VQ_BYTES): Move to
new files.
(SVE_VQ_MIN): Likewise.
(SVE_VQ_MAX): Likewise.
(SVE_VL_MIN): Likewise.
(SVE_VL_MAX): Likewise.
(SVE_NUM_ZREGS): Likewise.
(SVE_NUM_PREGS): Likewise.
(sve_vl_valid): Likewise.
(struct user_sve_header): Likewise.

6 years ago[gdb/testsuite/ada] Fix number-of-bp test in bp_inlined_func.exp
Tom de Vries [Mon, 11 Jun 2018 11:34:57 +0000 (13:34 +0200)]
[gdb/testsuite/ada] Fix number-of-bp test in bp_inlined_func.exp

At the moment, bp_inlined_func.exp passes for a combined current gcc and
gdb-binutils repos build but fails for a build with system gcc (7.3.1) and
ld (2.29.1).

It checks for 4 breakpoints on read_small:
...
gdb_test "break read_small" \
         "Breakpoint $decimal at $hex: read_small\\. \\(4 locations\\)" \
         "set breakpoint at read_small"
...
and fails because it gets 5 breakpoint locations instead:
...
(gdb) break read_small
Breakpoint 2 at 0x401f9a: read_small. (5 locations)
(gdb) FAIL: gdb.ada/bp_inlined_func.exp: set breakpoint at read_small
...

The 4 expected breakpoint locations are inlined versions of read_small, and
the 5th breakpoint location has this address:
...
(gdb) info breakpoint
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   <MULTIPLE>
1.1                         y     0x0000000000401f9a in b.read_small
                                                   at bp_inlined_func/b.adb:20
...
which is the read_small function itself:
...
(gdb) x 0x0000000000401f9a
0x401f9a <b__read_small+4>:     0x22f8058b
...

This patch updates the test to allow 5 breakpoint locations.

Tested on the configurations mentioned above, on x86_64.

2018-06-18  Tom de Vries  <tdevries@suse.de>

* gdb.ada/bp_inlined_func.exp: Allow 5 breakpoint locations.

6 years agoAutomatic date update in version.in
GDB Administrator [Mon, 18 Jun 2018 00:01:09 +0000 (00:01 +0000)]
Automatic date update in version.in

6 years agoAutomatic date update in version.in
GDB Administrator [Sun, 17 Jun 2018 00:00:41 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agogdb: Don't drop SIGSTOP during stop_all_threads
Andrew Burgess [Thu, 10 May 2018 22:52:49 +0000 (23:52 +0100)]
gdb: Don't drop SIGSTOP during stop_all_threads

This patch fixes an issue where GDB would sometimes hang when
attaching to a multi-threaded process.  This issue was especially
likely to trigger if the machine (running the inferior) was under
load.

In summary, the problem is an imbalance between two functions in
linux-nat.c, stop_callback and stop_wait_callback.  In stop_callback
we send SIGSTOP to a thread, but _only_ if the thread is not already
stopped, and if it is not signalled, which means it should stop soon.
In stop_wait_callback we wait for the SIGSTOP to arrive, however, we
are aware that the thread might have been signalled for some other
reason, and so if a signal other than SIGSTOP causes the thread to
stop then we stash that signal away so it can be reported back later.
If we get a SIGSTOP then this is discarded, after all, this signal was
sent from stop_callback.  Except that this might not be the case, it
could be that SIGSTOP was sent to a thread from elsewhere in GDB, in
which case we would not have sent another SIGSTOP from stop_callback
and the SIGSTOP received in stop_wait_callback should not be ignored.

Below I've laid out the exact sequence of events that I saw that lead
me to track down the above diagnosis.

After attaching to the inferior GDB sends a SIGSTOP to all of the
threads and then returns to the event loop waiting for interesting
things to happen.

Eventually the first target event is detected (this will be the first
SIGSTOP arriving) and GDB calls inferior_event_handler which calls
fetch_inferior_event.  Inside fetch_inferior_event GDB calls
do_target_wait which calls target_wait to find a thread with an event.

The target_wait call ends up in linux_nat_wait_1, which first checks
to see if any threads already have stashed stop events to report, and
if there are none then we enter a loop fetching as many events as
possible out of the kernel.  This event fetching is non-blocking, and
we give up once the kernel has no more events ready to give us.

All of the events from the kernel are passed through
linux_nat_filter_event which stashes the wait status for all of the
threads that reported a SIGSTOP, these will be returned by future
calls to linux_nat_wait_1.

Lets assume for a moment that we've attached to a multi-threaded
inferior, and that all but one thread has reported its stop during the
initial wait call in linux_nat_wait_1.  The other thread will be
reporting a SIGSTOP, but the kernel has not yet managed to deliver
that signal to GDB before GDB gave up waiting and continued handling
the events it already had.  GDB selects one of the threads that has
reported a SIGSTOP and passes this thread ID back to
fetch_inferior_event.

To handle the thread's SIGSTOP, GDB calls handle_signal_stop, which
calls stop_all_threads, this calls wait_one, which in turn calls
target_wait.

The first call to target_wait at this point will result in a stashed
wait status being returned, at which point we call setup_inferior.
The call to setup_inferior leads to a call into try_thread_db_load_1
which results in a call to linux_stop_and_wait_all_lwps.  This in turn
calls stop_callback on each thread followed by stop_wait_callback on
each thread.

We're now ready to make the mistake.  In stop_callback we see that our
problem thread is not stopped, but is signalled, so it should stop
soon.  As a result we don't send another SIGSTOP.

We then enter stop_wait_callback, eventually the problem thread stops
with SIGSTOP which we _incorrectly_ assume came from stop_callback,
and we discard.

Once stop_wait_callback has done its damage we return from
linux_stop_and_wait_all_lwps, finish in try_thread_db_load_1, and
eventually unwind back to the call to setup_inferior in
stop_all_threads.  GDB now loops around, and performs another
target_wait to get the next event from the inferior.

The target_wait calls causes us to once again reach linux_nat_wait_1,
and we pass through some code that calls resume_stopped_resumed_lwps.
This allows GDB to resume threads that are physically stopped, but
which GDB doesn't see any good reason for the thread to remain
stopped.  In our case, the problem thread which had its SIGSTOP
discarded is stopped, but doesn't have a stashed wait status to
report, and so GDB sets the thread going again.

We are now stuck waiting for an event on the problem thread that might
never arrive.

When considering how to write a test for this bug I struggled.  The
issue was only spotted _randomly_ when a machine was heavily loaded
with many multi-threaded applications, and GDB was being attached (by
script) to all of these applications in parallel.  In one reproducer I
required around 5 applications each of 5 threads per machine core in
order to reproduce the bug 2 out of 3 times.

What we really want to do though is simulate the kernel being slow to
report events through waitpid during the initial attach.  The solution
I came up with was to write an LD_PRELOAD library that intercepts
(some) waitpid calls and rate limits them to one per-second.  Any more
than that simply return 0 indicating there's no event available.
Obviously this can only be applied to waitpid calls that have the
WNOHANG flag set.

Unfortunately, once you ignore a waitpid call GDB can get a bit stuck.
Usually, once the kernel has made a child status available to waitpid
GDB will be sent a SIGCHLD signal.  However, if the kernel makes 5
child statuses available but, due to the preload library we only
collect one of them, then the kernel will not send any further SIGCHLD
signals, and so, when GDB, thinking that the remaining statuses have
not yet arrived sits waiting for a SIGCHLD it will be disappointed.

The solution, implemented within the preload library, is that, when we
hold back a waitpid result from GDB we spawn a new thread.  This
thread delays for a short period, and then sends GDB a SIGCHLD.  This
causes GDB to retry the waitpid, at which point sufficient time has
passed and our library allows the waitpid call to complete.

gdb/ChangeLog:

* linux-nat.c (stop_wait_callback): Don't discard SIGSTOP if it
was requested by GDB.

gdb/testsuite/ChangeLog:

* gdb.threads/attach-slow-waitpid.c: New file.
* gdb.threads/attach-slow-waitpid.exp: New file.
* gdb.threads/slow-waitpid.c: New file.

6 years agoAutomatic date update in version.in
GDB Administrator [Sat, 16 Jun 2018 00:00:56 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years ago[gdb] Add me to write-after-approval section in MAINTAINERS
Tom de Vries [Thu, 14 Jun 2018 21:52:30 +0000 (23:52 +0200)]
[gdb] Add me to write-after-approval section in MAINTAINERS

I've committed one patch modifying gdb ([gdb/cli] Honour 'print pretty' when
printing result of finish command) and I'm covered by the Novell blanket
copyright assignment.  So AFAIU, I qualify for write-after-approval.

This patch adds me to the MAINTAINERS file in the write-after-approval section.

2018-06-15  Tom de Vries  <tdevries@suse.de>

* MAINTAINERS (Write After Approval): Add Tom de Vries.