binutils-gdb.git
7 years agoChange return type of gdbarch_software_single_step to vector<CORE_ADDR>
Simon Marchi [Tue, 2 May 2017 17:30:07 +0000 (13:30 -0400)]
Change return type of gdbarch_software_single_step to vector<CORE_ADDR>

This is a relatively straightforward patch that changes
gdbarch_software_single_step so it returns an std::vector<CORE_ADDR>
instead of a VEC (CORE_ADDR).

gdb/ChangeLog:

* gdbarch.sh (software_single_step): Change return type to
std::vector<CORE_ADDR>.
* gdbarch.c, gdbarch.h: Re-generate.
* arch/arm-get-next-pcs.c (thumb_deal_with_atomic_sequence_raw):
Adjust.
(arm_deal_with_atomic_sequence_raw): Adjust.
(thumb_get_next_pcs_raw): Adjust.
(arm_get_next_pcs_raw): Adjust.
(arm_get_next_pcs): Adjust.
* arch/arm-get-next-pcs.h (arm_get_next_pcs): Adjust.
* aarch64-tdep.c (aarch64_software_single_step): Adjust.
* alpha-tdep.c (alpha_deal_with_atomic_sequence): Adjust.
(alpha_software_single_step): Adjust.
* alpha-tdep.h (alpha_software_single_step): Adjust.
* arm-linux-tdep.c (arm_linux_software_single_step): Adjust.
* arm-tdep.c (arm_software_single_step): Adjust.
(arm_breakpoint_kind_from_current_state): Adjust.
* arm-tdep.h (arm_software_single_step): Adjust.
* breakpoint.c (insert_single_step_breakpoint): Adjust.
* cris-tdep.c (cris_software_single_step): Adjust.
* mips-tdep.c (mips_deal_with_atomic_sequence): Adjust.
(micromips_deal_with_atomic_sequence): Adjust.
(deal_with_atomic_sequence): Adjust.
(mips_software_single_step): Adjust.
* mips-tdep.h (mips_software_single_step): Adjust.
* moxie-tdep.c (moxie_software_single_step): Adjust.
* nios2-tdep.c (nios2_software_single_step): Adjust.
* ppc-tdep.h (ppc_deal_with_atomic_sequence): Adjust.
* rs6000-aix-tdep.c (rs6000_software_single_step): Adjust.
* rs6000-tdep.c (ppc_deal_with_atomic_sequence): Adjust.
* s390-linux-tdep.c (s390_software_single_step): Adjust.
* sparc-tdep.c (sparc_software_single_step): Adjust.
* spu-tdep.c (spu_software_single_step): Adjust.
* tic6x-tdep.c (tic6x_software_single_step): Adjust.

gdb/gdbserver/ChangeLog:

* linux-arm-low.c (arm_gdbserver_get_next_pcs): Adjust to
software_single_step change of return type to
std::vector<CORE_ADDR>.
* linux-low.c (install_software_single_step_breakpoints):
Likewise.
* linux-low.h (install_software_single_step_breakpoints):
Likewise.

7 years agoChange field separator in gdbarch.sh
Simon Marchi [Tue, 2 May 2017 17:30:07 +0000 (13:30 -0400)]
Change field separator in gdbarch.sh

The fields in the description of the gdbarch interface are separated
using colons.  That becomes a problem if we want to use things like
std::vector in it. This patch changes the field separator to use
semicolons instead.

I think there's very little chance we'll ever want to use a semicolon in
one of the fields, but if you think another character would be more
appropriate, let me know.

gdb/ChangeLog:

* gdbarch.sh: Use semi-colon as field separator instead of colon.
* gdbarch.h: Re-generate.

7 years agoDon't merge notes when the relocs associated with them cannot be reliably deleted.
Nick Clifton [Tue, 2 May 2017 15:54:53 +0000 (16:54 +0100)]
Don't merge notes when the relocs associated with them cannot be reliably deleted.

* objcopy.c (merge_gnu_build_notes): Disable merge if there are
more internal relocs than external relocs.

7 years agoPR 21384, --dynamic-list regression with f02cb058
Alan Modra [Tue, 2 May 2017 12:26:43 +0000 (21:56 +0930)]
PR 21384, --dynamic-list regression with f02cb058

The commit to "Always descend into output section statements in
lang_do_assignments" meant that linker script symbols were not
bfd_link_hash_new when ld called bfd_elf_record_link_assignment.
This patch corrects that problem by testing h->non_elf instead.

PR 21384
* elflink.c (bfd_elf_link_mark_dynamic_symbol): Test h->non_elf
rather than h->root.type == bfd_link_hash_new.
(bfd_elf_record_link_assignment): Similarly, call
bfd_elf_link_mark_dynamic_symbol when h->non_elf.

7 years agoMIPS16/opcodes: Keep the LSB of PC-relative offsets in disassembly
Maciej W. Rozycki [Tue, 2 May 2017 10:53:30 +0000 (11:53 +0100)]
MIPS16/opcodes: Keep the LSB of PC-relative offsets in disassembly

Correct the disassembly of the PC-relative immediate argument of the
MIPS16 synthetic LA, LW, DLA and LD instructions and do not mask the
LSB, which in this case is a part of the data address rather than the
ISA bit and has to be fully presented.

opcodes/
* mips-dis.c (print_insn_arg): Only clear the ISA bit for jumps
and branches and not synthetic data instructions.

binutils/
* testsuite/binutils-all/mips/mips16-undecoded.d: Adjust the
disassembly of PC-relative LA and LW synthetic instructions.

7 years agoPrevent memory exhaustion from a corrupt PE binary with an overlarge number of relocs.
Nick Clifton [Tue, 2 May 2017 10:54:53 +0000 (11:54 +0100)]
Prevent memory exhaustion from a corrupt PE binary with an overlarge number of relocs.

PR 21440
* objdump.c (dump_relocs_in_section): Check for an excessive
number of relocs before attempting to dump them.

7 years agoPython: Introduce gdb.Instruction class
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Introduce gdb.Instruction class

This adds a generic instruction class to Python and has gdb.RecordInstruction
inherit from it.

7 years agoPython: Move and rename gdb.BtraceFunction
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Move and rename gdb.BtraceFunction

Remove gdb.BtraceFunctionCall and replace by gdb.FunctionSegment.  Additionally,
rename prev_segment and next_segment to prev and next.

7 years agoPython: Move and rename gdb.BtraceInstruction
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Move and rename gdb.BtraceInstruction

Remove gdb.BtraceInstruction and replace by gdb.RecordInstruction.

7 years agoPython: Introduce gdb.RecordGap class
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Introduce gdb.RecordGap class

As discussed here: https://sourceware.org/ml/gdb-patches/2017-04/msg00157.html

A gap is not an instruction and it should not pretend to be one.
gdb.Record.instruction_history is now a list of gdb.RecordInstruction and
gdb.RecordGap objects.  This allows the user to deal with Gaps in the record
in a more sane way.

7 years agoPython: Remove ptid from gdb.Record interface
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Remove ptid from gdb.Record interface

As discussed here: https://sourceware.org/ml/gdb-patches/2017-04/msg00166.html

7 years agoPython: Use correct ptid in btrace recording
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Use correct ptid in btrace recording

The user would always get the instruction_history and function_call_history
objects of the current thread, not the thread for which the gdb.Record object
was created.

The attached testcase fails without this patch and passes with the patch.

7 years agoPython: Fix indentation in py-record-btrace.c
Tim Wiederhake [Tue, 2 May 2017 09:35:54 +0000 (11:35 +0200)]
Python: Fix indentation in py-record-btrace.c

7 years agoFix value in comment of disassembled ARM type A opcodes.
Bernd Edlinger [Tue, 2 May 2017 09:28:09 +0000 (10:28 +0100)]
Fix value in comment of disassembled ARM type A opcodes.

* arm-dis.c (print_insn_thumb32): Fix value_in_comment.

7 years agoAutomatic date update in version.in
GDB Administrator [Tue, 2 May 2017 00:00:39 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agox86: Run GNU2 TLS tests with working GNU2 TLS support
H.J. Lu [Mon, 1 May 2017 18:02:55 +0000 (11:02 -0700)]
x86: Run GNU2 TLS tests with working GNU2 TLS support

Check if GNU2 TLS really works before running GNU2 TLS tests.

* testsuite/ld-i386/tls.exp: Run GNU2 TLS tests only if there
is working GNU2 TLS support.
* testsuite/ld-x86-64/tls.exp: Likewise.
* testsuite/lib/ld-lib.exp (check_gnu2_tls_available): New proc.

7 years agogdb/MAINTAINERS: Move Daniel J and Mark to the Past Maintainers section.
Joel Brobecker [Mon, 1 May 2017 16:59:15 +0000 (09:59 -0700)]
gdb/MAINTAINERS: Move Daniel J and Mark to the Past Maintainers section.

gdb/ChangeLog:

        * MAINTAINERS: Move Daniel Jacobowitz and Mark Kettenis to
        the past maintainers section.

7 years agomerge_gnu_build_notes reloc deletion
Alan Modra [Mon, 1 May 2017 04:41:27 +0000 (14:11 +0930)]
merge_gnu_build_notes reloc deletion

If moving relocs, the next reloc to look at is at the same location.

* objcopy.c (merge_gnu_build_notes): Correct code deleting
relocs.

7 years agoAutomatic date update in version.in
GDB Administrator [Mon, 1 May 2017 00:00:35 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agoAutomatic date update in version.in
GDB Administrator [Sun, 30 Apr 2017 00:00:31 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agoPR21432, buffer overflow in perform_relocation
Alan Modra [Sat, 29 Apr 2017 05:18:16 +0000 (14:48 +0930)]
PR21432, buffer overflow in perform_relocation

The existing reloc offset range tests didn't catch small negative
offsets less than the size of the reloc field.

PR 21432
* reloc.c (reloc_offset_in_range): New function.
(bfd_perform_relocation, bfd_install_relocation): Use it.
(_bfd_final_link_relocate): Likewise.

7 years agoMake environ.exp run on all platforms (and create info-program.exp)
Sergio Durigan Junior [Fri, 31 Mar 2017 17:24:36 +0000 (13:24 -0400)]
Make environ.exp run on all platforms (and create info-program.exp)

This has been on my TODO list for a while.  There's a really old bug
about this (PR testsuite/8595), and there was no reason for
environ.exp to be specific for hppa* targets.  So this patch removes
this constraint, modernizes the testcase, and cleans up some things.
Most of the tests remained, and some were rewritten (especially the
one that checks if "show environment" works, which is something kind
of hard to do).

As a bonus, I'm adding a separated info-program.exp file containing
all the tests related to "info program" that were present on
environ.exp.

Tested locally, everything still passes.

gdb/testsuite/ChangeLog:
2017-04-28  Sergio Durigan Junior  <sergiodj@redhat.com>

PR testsuite/8595
* gdb.base/environ.exp: Make test available in all architectures.
Move bits related to "info program" testing to
gdb.base/info-program.exp.  Rewrite tests to use the two new
procedures mentione below.
(test_set_show_env_var) New procedure.
(test_set_show_env_var_equal): Likewise.
* gdb.base/info-program.exp: New file.

7 years agoAutomatic date update in version.in
GDB Administrator [Sat, 29 Apr 2017 00:00:38 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agoRemove cleanup in get_return_value
Yao Qi [Fri, 28 Apr 2017 21:48:42 +0000 (22:48 +0100)]
Remove cleanup in get_return_value

With regcache ctor, we can use it to create local object in
get_return_value (), so that the cleanup can be removed.

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>

* infcmd.c (get_return_value): Use regcache ctor, and remove
cleanup.

7 years agoUse tag dispatch regcache ctor in regcache_dup
Yao Qi [Fri, 28 Apr 2017 21:48:42 +0000 (22:48 +0100)]
Use tag dispatch regcache ctor in regcache_dup

This patch adds a tag dispatch ctor to create read-only regcache from
a write-through regcache, also this patch deletes copy ctor and
assignment operator.

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>
    Pedro Alves  <palves@redhat.com>

* regcache.c (regcache::regcache): New tag dispatch ctor.
(do_cooked_read): Moved above.
(regcache_dup): Use the tag dispatch ctor..
* regcache.h (regcache): Declare ctor, delete copy ctor and
assignment operator, remove friend regcache_dup.

7 years agoSimplify regcache_dup
Yao Qi [Fri, 28 Apr 2017 21:48:42 +0000 (22:48 +0100)]
Simplify regcache_dup

regcache_dup, in fact, is to create a readonly regcache from a
non-readonly regcache.  This patch adds an assert that src is not
readonly.

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>

* regcache.c (regcache_dup): Assert !src->m_readonly_p and
call method save instead of regcache_cpy.
* regcache.h (struct regcache): Make regcache_dup a friend.

7 years agoClass-fy regcache
Yao Qi [Fri, 28 Apr 2017 21:48:42 +0000 (22:48 +0100)]
Class-fy regcache

This patch moves regcache declaration to regcache.h, and converts
regcache apis to member functions, for example, regcache_invalidate
is changed to regcache::invalidate.

This patch also add "m_" prefix to these private fields.

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>

* regcache.c (struct regcache): Move to regcache.h
(regcache::arch): New method.
(regcache_get_ptid): Update.
(get_regcache_arch): Call arch method.
(get_regcache_aspace): Call method aspace.
(register_buffer): Change it to method.
(regcache_save): Change it to regcache::save.
(regcache_restore): Likewise.
(regcache_cpy_no_passthrough): Remove the declaration.
(regcache_cpy): Call methods restore and cpy_no_passthrough.
(regcache_cpy_no_passthrough): Change it to method
cpy_no_passthrough.
(regcache_register_status): Change it to method
get_register_status.
(regcache_invalidate): Change it to method invalidate.
(regcache_thread_ptid_changed): Use methods ptid and set_ptid.
(regcache_raw_update): Change it to method raw_update.
(regcache_raw_read): Likewise.
(regcache_raw_read_signed): Likewise.
(regcache_raw_read_unsigned): Likewise.
(regcache_raw_write_signed): Likewise.
(regcache_raw_write_unsigned): Likewise.
(regcache_cooked_read): Likewise.
(regcache_cooked_read_value): Likewise.
(regcache_cooked_read_signed): Likewise.
(regcache_cooked_read_unsigned): Likewise.
(regcache_cooked_write_signed): Likewise.
(regcache_cooked_write_unsigned): Likewise.
(regcache_raw_set_cached_value): Likewise.
(regcache_raw_write): Likewise.
(regcache_cooked_write): Likewise.
(regcache_xfer_part): Likewise.
(regcache_raw_read_part): Likewise.
(regcache_raw_write_part): Likewise.
(regcache_cooked_read_part): Likewise.
(regcache_cooked_write_part): Likewise.
(regcache_raw_supply): Likewise.
(regcache_raw_collect): Likewise.
(regcache_transfer_regset): Likewise.
(regcache_supply_regset): Likewise.
(regcache_collect_regset): Likewise.
(regcache_debug_print_register): Likewise.
(enum regcache_dump_what): Move it to regcache.h.
(regcache_dump): Change it to method dump.
* regcache.h (enum regcache_dump_what): New.
(class regcache): New.
* target.c (target_fetch_registers): Call method
debug_print_register.
(target_store_registers): Likewise.

7 years agoClass-ify lm_info_windows
Simon Marchi [Fri, 28 Apr 2017 21:16:18 +0000 (17:16 -0400)]
Class-ify lm_info_windows

This patch makes lm_info_windows a "real" class.  It initializes the field
and replaces XCNEW/xfree with new/delete.

gdb/ChangeLog:

* windows-nat.c (struct lm_info_windows): Initialize field.
(windows_make_so): Allocate lm_info_windows with new.
(windows_free_so): Free lm_info_windows with delete.

7 years agoClass-ify lm_info_darwin
Simon Marchi [Fri, 28 Apr 2017 21:16:18 +0000 (17:16 -0400)]
Class-ify lm_info_darwin

This patch makes lm_info_darwin a "real" class.  It initializes the
field and replaces XCNEW/xfree with new/delete.

gdb/ChangeLog:

* solib-darwin.c (struct lm_info_darwin): Initialize field.
(darwin_current_sos): Allocate lm_info_darwin with new, remove
cleanup.
(darwin_free_so): Free lm_info_darwin with delete.

7 years agoClass-ify lm_info_svr4
Simon Marchi [Fri, 28 Apr 2017 21:16:17 +0000 (17:16 -0400)]
Class-ify lm_info_svr4

This patch makes lm_info_svr4 a "real" class.  It initializes fields,
uses bool and replaces XCNEW/xfree with new/delete.

The memcpy in svr4_copy_library_list is replaced by a usage of the
default copy constructor.

gdb/ChangeLog:

* solib-svr4.h (struct lm_info_svr4): Initialize fields.
<l_addr_p>: Change type to bool.
* solib-svr4.c (lm_info_read): Allocate lm_info_svr4 with new.
(svr4_free_so): Free lm_info_svr4 with delete.
(svr4_copy_library_list): Replace memcpy with call to copy
constructor.
(library_list_start_library, svr4_default_sos): Allocate
lm_info_svr4 with new.

7 years agoClass-ify lm_info_target
Simon Marchi [Fri, 28 Apr 2017 21:16:16 +0000 (17:16 -0400)]
Class-ify lm_info_target

This patch makes lm_info_target a "real" class.  It adds a destructor,
uses std::string, initializes the fields and replaces XCNEW/xfree with
new/delete.

gdb/ChangeLog:

* solib-target.c (struct lm_info_target): Add destructor,
initialize fields.
<name>: Change type to std::string.
(library_list_start_library): Allocate lm_info_target with new.
(solib_target_free_library_list): Free lm_info_target with
delete.
(solib_target_current_sos): Adapt to std::string.
(solib_target_free_so): Free lm_info_target with delete.

7 years agoClass-ify lm_info_frv
Simon Marchi [Fri, 28 Apr 2017 21:16:16 +0000 (17:16 -0400)]
Class-ify lm_info_frv

This patches makes lm_info_frv a "real" class.  It adds a destructor,
initializes the fields and replaces XCNEW/xfree with new/delete.

gdb/ChangeLog:

* solib-frv.c (struct lm_info_frv): Add destructor, initialize
fields.
(frv_current_sos): Allocate lm_info_frv with new.
(frv_relocate_main_executable): Free lm_info_frv with delete,
allocate with new.
(frv_clear_solib, frv_free_so): Free lm_info_frv with delete.

7 years agoFix indentation of lm_info_frv
Simon Marchi [Fri, 28 Apr 2017 21:16:15 +0000 (17:16 -0400)]
Fix indentation of lm_info_frv

This patch fixes the indentation of lm_info_frv, so that the real
changes of the following patch are not lost in the reformatting.

gdb/ChangeLog:

* solib-frv.c (struct lm_info_frv): Fix indentation.

7 years agoClass-ify lm_info_dsbt
Simon Marchi [Fri, 28 Apr 2017 21:16:14 +0000 (17:16 -0400)]
Class-ify lm_info_dsbt

This patches makes lm_info_dsbt a "real" class.  It introduces a
destructor, initializes the field and replaces XCNEW/xfree with
new/delete.

gdb/ChangeLog:

* solib-dsbt.c (struct lm_info_dsbt): Add destructor, initialize
map field.
(dsbt_current_sos): Allocate lm_info_dsbt with new.
(dsbt_relocate_main_executable): Free lm_info_dsbt with delete
and allocate with new.
(dsbt_clear_solib, dsbt_free_so): Free lm_info_dsbt with delete.

7 years agoClass-ify lm_info_aix
Simon Marchi [Fri, 28 Apr 2017 21:16:14 +0000 (17:16 -0400)]
Class-ify lm_info_aix

This patch makes lm_info_aix a "real" class.  It uses std::string,
initializes fields in-class and replaces XCNEW/xfree with new/delete.
The solib_aix_new_lm_info can be replaced by using the default copy
constructor.

gdb/ChangeLog:

* solib-aix.c (struct lm_info_aix): Initialize fields in-class.
<filename, member_name>: Change type to std::string.
(solib_aix_new_lm_info, solib_aix_xfree_lm_info): Remove.
(library_list_start_library): Allocate lm_info_aix with new.
(solib_aix_free_library_list, solib_aix_free_so): Free with delete.
(solib_aix_current_sos): Adapt to std::string, copy lm_info_aix
with copy constructor.

7 years agoMake various lm_info implementations inherit from a base class
Simon Marchi [Fri, 28 Apr 2017 21:16:13 +0000 (17:16 -0400)]
Make various lm_info implementations inherit from a base class

The lm_info structure is used to store target specific information about
mapped libraries.  It is currently defined as an opaque type in solist.h
and a pointer to it is included in solist, the target-agnostic object
representing a loaded shared library.  Multiple targets define their own
implementation of lm_info.

In anticipation of using C++ stuff (e.g. vector) in the lm_info objects,
we first need to avoid different definitions of classes with the same
name (which violates the one definition rule).  This patch does it by
having a base class (lm_info_base) from which all the specific lm_info
derive.  Each implementation is renamed to something that makes sense
(e.g. lm_info_aix for AIX).  The next logical step would probably be to
derive directly from so_list, it's not really obvious, so I'll keep that
for another day.

One special case is the Neutrino (nto) support.  It uses SVR4-style
libraries, but overrides some methods.  To do that, it needed to have
its own copy of SVR4's lm_info structure in nto-tdep.c, because it was
just not possible to put it in solib-svr4.h and include that file.  Over
time, that copy got out of sync, which is still the case today.  I can
only assume that the lm_addr function in nto-tdep.c is broken right now.
The first field of the old lm_info was a pointer (gdb_byte *), whereas
in the new lm_info it's an address in the inferior (CORE_ADDR).  Trying
to use that field today probably results in a crash.  With this
refactor, it's now possible to put lm_info_svr4 in solib-svr4.h and just
include it.  I have adapted the code in nto-tdep.c to that it builds,
but it's probably not correct.  Since I don't have the knowledge nor
setup to try this on Neutrino, somebody else would have to fix it.  But
I am confident that I am not making things worse than they already are.

gdb/ChangeLog:

* solist.h (struct lm_info): Remove.
(struct lm_info_base): New class.
(struct so_list) <lm_info>: Change type to lm_info_base *.
* nto-tdep.c (struct lm_info): Remove.
(lm_addr): Adjust.
* solib-aix.c (struct lm_info): Rename to ...
(struct lm_info_aix): ... this.  Extend lm_info_base.
(lm_info_p): Rename to ...
(lm_info_aix_p): ... this, and adjust.
(solib_aix_new_lm_info, solib_aix_xfree_lm_info,
solib_aix_parse_libraries, library_list_start_library,
solib_aix_free_library_list, solib_aix_parse_libraries,
solib_aix_get_library_list,
solib_aix_relocate_section_addresses, solib_aix_free_so,
solib_aix_get_section_offsets,
solib_aix_solib_create_inferior_hook, solib_aix_current_sos):
Adjust.
(struct solib_aix_inferior_data) <library_list>: Adjust.
* solib-darwin.c (struct lm_info): Rename to ...
(struct lm_info_darwin): ... this.  Extend lm_info_base.
(darwin_current_sos, darwin_relocate_section_addresses): Adjust.
* solib-dsbt.c (struct lm_info): Rename to ...
(struct lm_info_dsbt): ... this.  Extend lm_info_base.
(struct dsbt_info) <main_executable_lm_info): Adjust.
(dsbt_current_sos, dsbt_relocate_main_executable, dsbt_free_so,
dsbt_relocate_section_addresses): Adjust.
* solib-frv.c (struct lm_info): Rename to ...
(struct lm_info_frv): ... this.  Extend lm_info_base.
(main_executable_lm_info): Adjust.
(frv_current_sos, frv_relocate_main_executable, frv_free_so,
frv_relocate_section_addresses, frv_fdpic_find_global_pointer,
find_canonical_descriptor_in_load_object,
frv_fdpic_find_canonical_descriptor): Adjust.
* solib-svr4.c (struct lm_info): Move to solib-svr4.h, renamed
to lm_info_svr4.
(lm_info_read, lm_addr_check, svr4_keep_data_in_core,
svr4_clear_so, svr4_copy_library_list,
library_list_start_library, svr4_default_sos, svr4_read_so_list,
svr4_current_sos, svr4_fetch_objfile_link_map,
solist_update_incremental): Adjust.
* solib-svr4.h (struct lm_info_svr4): Move here from
solib-svr4.c.
* solib-target.c (struct lm_info): Rename to ...
(struct lm_info_target): ... this.  Extend lm_info_base.
(lm_info_p): Rename to ...
(lm_info_target_p): ... this.
(solib_target_parse_libraries, library_list_start_segment,
library_list_start_section, library_list_start_library,
library_list_end_library, solib_target_free_library_list,
solib_target_current_sos, solib_target_free_so,
solib_target_relocate_section_addresses): Adjust.
* windows-nat.c (struct lm_info): Rename to ...
(struct lm_info_windows): ... this.  Extend lm_info_base.
(windows_make_so, handle_load_dll, handle_unload_dll,
windows_xfer_shared_libraries): Adjust.

7 years agoStandardize darwin's lm_info
Simon Marchi [Fri, 28 Apr 2017 21:16:12 +0000 (17:16 -0400)]
Standardize darwin's lm_info

Darwin's lm_info structure is used a little bit differently than the
other solib implementations.  The other implementations first allocate
an so_list object, then instanciate their specific lm_info structure,
and assign it to so_list::lm_info.

The Darwin implementation allocates both at the same time
(darwin_so_list).  This patch changes it to be like the others, so that
we'll be able to do some generalizations later.

gdb/ChangeLog:

* solib-darwin.c (struct darwin_so_list): Remove.
(darwin_current_sos): Allocate an so_list object instead of a
darwin_so_list, separately allocate an lm_info object.
(darwin_free_so): Free lm_info.

7 years agox86: Add run-time tests for -mtls-dialect=gnu2
H.J. Lu [Fri, 28 Apr 2017 19:42:05 +0000 (12:42 -0700)]
x86: Add run-time tests for -mtls-dialect=gnu2

* testsuite/config/default.exp (GNU2_CFLAGS): New.  Set
to -mtls-dialect=gnu2 if target compiler supports it.
* testsuite/ld-i386/tls.exp: Run -mtls-dialect=gnu2 tests.
* testsuite/ld-x86-64/tls.exp: Likewise.
* testsuite/ld-i386/tlsdesc1a.c: New file.
* testsuite/ld-i386/tlsdesc1b.c: Likewise.
* testsuite/ld-x86-64/tlsdesc1a.c: Likewise.
* testsuite/ld-x86-64/tlsdesc1b.c: Likewise.

7 years agoELF: Add run-time tests for -z now
H.J. Lu [Fri, 28 Apr 2017 19:29:29 +0000 (12:29 -0700)]
ELF: Add run-time tests for -z now

* testsuite/ld-elf/shared.exp: Add run-time tests for -z now.
* testsuite/ld-i386/tls.exp: Likewise.
* testsuite/ld-ifunc/ifunc.exp: Likewise.
* testsuite/ld-x86-64/tls.exp: Likewise.

7 years agoConsistently use fprintf_filtered when displaying MIPS registers.
John Baldwin [Fri, 28 Apr 2017 16:34:52 +0000 (09:34 -0700)]
Consistently use fprintf_filtered when displaying MIPS registers.

One line was using printf_filtered instead of fprintf_filtered
to the requested file.

gdb/ChangeLog:

* mips-tdep.c (print_gp_register_row): Replace printf_filtered
with fprintf_filtered.

7 years agox86: Check plt_got before using .plt.got
H.J. Lu [Fri, 28 Apr 2017 14:26:45 +0000 (07:26 -0700)]
x86: Check plt_got before using .plt.got

Since the GOT procedure linkage table is supported only if plt_got
isn't NULL, we need to check plt_got before using it.

* elf32-i386.c (elf_i386_allocate_dynrelocs): Check plt_got
before using .plt.got.
* elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewise.

7 years agoAdd constructor and destructor to regcache
Yao Qi [Fri, 28 Apr 2017 13:43:13 +0000 (14:43 +0100)]
Add constructor and destructor to regcache

This patch adds ctor and dtor to regcache.

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>

* regcache.c (regcache::regcache): New function.
(regcache::~regcache): New function.
(regcache_xmalloc_1): Remove.
(regcache_xmalloc): Call new regcache.
(regcache_xfree): Call delete regcache.
(get_thread_arch_aspace_regcache): Call new regcache.

7 years agoFix off by one error when checking for empty note names.
Nick Clifton [Fri, 28 Apr 2017 11:09:14 +0000 (12:09 +0100)]
Fix off by one error when checking for empty note names.

PR binutils/21439
* readelf.c (print_gnu_build_attribute_name): Allow for an empty
name field.

7 years agoFix heap-buffer address violation when reading version data from a corrupt binary.
Nick Clifton [Fri, 28 Apr 2017 10:21:53 +0000 (11:21 +0100)]
Fix heap-buffer address violation when reading version data from a corrupt binary.

PR binutils/21437
* readelf.c (process_version_sections): Check for underflow when
computing the start address of the auxillary version data.

7 years agoFix heap-buffer overflow bugs caused when dumping debug information from a corrupt...
Nick Clifton [Fri, 28 Apr 2017 09:28:04 +0000 (10:28 +0100)]
Fix heap-buffer overflow bugs caused when dumping debug information from a corrupt binary.

PR binutils/21438
* dwarf.c (process_extended_line_op): Do not assume that the
string extracted from the section is NUL terminated.
(fetch_indirect_string): If the string retrieved from the section
is not NUL terminated, return an error message.
(fetch_indirect_line_string): Likewise.
(fetch_indexed_string): Likewise.

7 years agoUse ptid method lwp in mips_linux_new_thread
Yao Qi [Fri, 28 Apr 2017 08:50:51 +0000 (09:50 +0100)]
Use ptid method lwp in mips_linux_new_thread

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>

* mips-linux-nat.c (mips_linux_new_thread): Use ptid method
lwp instead of ptid_get_lwp.

7 years ago[MIPS] Use lwpid from lwp_info instead of inferior_ptid
Yao Qi [Fri, 28 Apr 2017 08:33:16 +0000 (09:33 +0100)]
[MIPS] Use lwpid from lwp_info instead of inferior_ptid

RAJESH reported that GDB gets "Couldn't write debug register: No such
process." on mips64 when GDB attaches to a multi threaded application.

Looks GDB nows PTRACE_GET_WATCH_REGS for inferior_ptid but
PTRACE_SET_WATCH_REGS for lwp->ptid, they may be different.

gdb:

2017-04-28  Yao Qi  <yao.qi@linaro.org>

* mips-linux-nat.c (mips_linux_new_thread): Get lwpid from
lwp_info instead of getting from inferior_ptid.

7 years agoAutomatic date update in version.in
GDB Administrator [Fri, 28 Apr 2017 00:00:34 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agoFix overload resolution involving rvalue references and cv qualifiers.
Keith Seitz [Thu, 27 Apr 2017 22:55:26 +0000 (15:55 -0700)]
Fix overload resolution involving rvalue references and cv qualifiers.

The following patch fixes several outstanding overload resolution problems
with rvalue references and cv qualifiers in the test suite. The tests for
these problems typically passed with one compiler version and failed with
another. This behavior occurs because of the ordering of the overloaded
functions in the debug info. So the first best match "won out" over the
a subsequent better match.

One of the bugs addressed by this patch is the failure of rank_one_type to
account for type equality of two overloads based on CV qualifiers.  This was
leading directly to problems evaluating rvalue reference overload quality,
but it is also highlighted in gdb.cp/oranking.exp, where two test KFAIL as
a result of this shortcoming.

I found the overload resolution code committed with the rvalue reference
patch (f9aeb8d49) needlessly over-complicated, and I have greatly simplified
it. This fixes some KFAILing tests in gdb.exp/rvalue-ref-overload.exp.

gdb/ChangeLog

* gdbtypes.c (LVALUE_REFERENCE_TO_RVALUE_BINDING_BADNESS)
DIFFERENT_REFERENCE_TYPE_BADNESS): Remove.
(CV_CONVERSION_BADNESS): Define.
(rank_one_type): Remove overly restrictive rvalue reference
rank checks.
Add cv-qualifier checks and subranks for type equality.
* gdbtypes.h (REFERENCE_CONVERSION_RVALUE,
REFERENCE_CONVERSION_CONST_LVALUE, CV_CONVERSION_BADNESS,
CV_CONVERSION_CONST, CV_CONVERSION_VOLATILE): Declare.

gdb/testsuite/ChangeLog

* gdb.cp/oranking.cc (test15): New function.
(main): Call test15 and declare additional variables for testing.
* gdb.cp/oranking.exp: Remove kfail status for "p foo4(&a)" and
"p foo101('abc')" tests.
* gdb.cp/rvalue-ref-overloads.exp: Remove kfail status for
"lvalue reference overload" test.
* gdb.cp/rvalue-ref-params.exp: Remove kfail status for
"print value of f1 on Child&& in f2" test.

7 years agox86-64: Use "=" instead of "+=" to update 0
H.J. Lu [Thu, 27 Apr 2017 22:24:08 +0000 (15:24 -0700)]
x86-64: Use "=" instead of "+=" to update 0

Use

  if (htab->elf.splt->size == 0)
    htab->elf.splt->size = GET_PLT_ENTRY_SIZE (output_bfd);

instead of

  if (htab->elf.splt->size == 0)
    htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);

* elf64-x86-64.c (elf_x86_64_size_dynamic_sections): Use "="
instead of "+=" to update 0.

7 years agoAdd missing incref when creating Inferior Python object
Simon Marchi [Thu, 27 Apr 2017 21:03:20 +0000 (17:03 -0400)]
Add missing incref when creating Inferior Python object

The test py-inferior.exp fails when using a debug build of Python 3.6.  I don't
see it failing with my system's default Python, but it might be related to the
different memory allocation scheme used when doing a build with pydebug.

The issue is that we are missing a Py_INCREF in
inferior_to_inferior_object.  The PyObject_New function initializes the
object with a refcount of 1.  If we assume that this refcount
corresponds to the reference we are returning, then we are missing an
incref for the reference in the inferior data.

The counterpart for the incref that corresponds to the reference in the
inferior data is in py_free_inferior, in the form the gdbpy_ref instance.

Here's how I can get it to crash (with some debug output):

  $ ./gdb -nx -ex "set debug python 1"
  (gdb) add-inferior
  Added inferior 2
  (gdb) python infs = gdb.inferiors()
  Creating Python Inferior object inf = 1
  Creating Python Inferior object inf = 2
  (gdb) remove-inferiors 2
  py_free_inferior inf = 2
  infpy_dealloc inf = <unknown>
  (gdb) python infs = None
  Fatal Python error: Objects/tupleobject.c:243 object at 0x7f9cf1a568d8 has negative ref count -1

  Current thread 0x00007f9cf1b68780 (most recent call first):
    File "<string>", line 1 in <module>
  [1]    408 abort (core dumped)  ./gdb -nx -ex "set debug python 1"

After having created the inferiors object, their refcount is 1 (which
comes from PyObject_New), but it should be two.  The gdb inferior object
has a reference and the "infs" list has a reference.

When invoking remove-inferiors, py_free_inferior gets called.  It does
the decref that corresponds to the reference that the gdb inferior
object kept.  At this moment, the refcount drops to 0 and the object
gets deallocated, even though the "infs" list still has a reference.
When we set "infs" to None, Python tries to decref the already zero
refcount and the assert triggers.

With this patch, it looks better:

  (gdb) add-inferior
  Added inferior 2
  (gdb) python infs = gdb.inferiors()
  Creating Python Inferior object inf = 1
  Creating Python Inferior object inf = 2
  (gdb) remove-inferiors 2
  py_free_inferior inf = 2
  (gdb) python infs = None
  infpy_dealloc inf = <unknown>

gdb/ChangeLog:

* python/py-inferior.c (inferior_to_inferior_object): Increment reference
count when creating the object.

7 years agox86: Create dynamic sections in create_dynamic_sections
H.J. Lu [Thu, 27 Apr 2017 20:55:31 +0000 (13:55 -0700)]
x86: Create dynamic sections in create_dynamic_sections

This patch creates dynamic sections in i386/x86-64 create_dynamic_sections
instead of creating them on demend.  Linker will strip them if they are
empty.  It changes order in x86-64 .eh_frame section.  The extra DW_CFA_nop
paddings is due to

https://sourceware.org/bugzilla/show_bug.cgi?id=21441

bfd/

* elf32-i386.c (elf_i386_create_dynamic_sections): Create the
.plt.got section here.
(elf_i386_check_relocs): Don't create the .plt.got section.
* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Create
the .plt.got and .plt.bnd sections here.
(elf_x86_64_check_relocs): Don't create the .plt.got nor
.plt.bnd sections.

ld/

* testsuite/ld-x86-64/pr21038a.d: Update DW_CFA_nop paddings
in .eh_frame section.
* testsuite/ld-x86-64/pr21038c.d: Update .eh_frame order.

7 years agoRemove has_bnd_reloc from elf_x86_64_link_hash_entry
H.J. Lu [Thu, 27 Apr 2017 16:32:35 +0000 (09:32 -0700)]
Remove has_bnd_reloc from elf_x86_64_link_hash_entry

has_bnd_reloc was added to elf_x86_64_link_hash_entry track BND
relocations by

commit 0ff2b86e7c14177ec7f9e1257f8e697814794017
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Nov 20 09:01:04 2013 -0800

    Create the second PLT for BND relocations

Since BND relocations have been deprecated by

commit d258b828287a863376af60a1ef7ceafbccc83d93
Author: Igor Zamyatin <igor.zamyatin@intel.com>
Date:   Tue Nov 18 10:52:36 2014 +0300

    Add -z bndplt to generate BND prefix in PLT entries

This patch removes has_bnd_reloc from elf_x86_64_link_hash_entry and
checks bndplt instead of has_bnd_reloc.

* elf64-x86-64.c (elf_x86_64_link_hash_entry): Remove
has_bnd_reloc.
(elf_x86_64_link_hash_newfunc): Don't clear has_bnd_reloc.
(elf_x86_64_copy_indirect_symbol): Don't copy has_bnd_reloc.
(elf_x86_64_check_relocs): Don't set has_bnd_reloc.
(elf_x86_64_finish_dynamic_symbol): Check bndplt instead of
has_bnd_reloc.

Remove has_bnd_reloc

7 years agoChange _bfd_elf_link_setup_gnu_properties to bfd *
H.J. Lu [Thu, 27 Apr 2017 16:07:23 +0000 (09:07 -0700)]
Change _bfd_elf_link_setup_gnu_properties to bfd *

Change setup_gnu_properties to return the first relocatable ELF input
with GNU properties so that a backend can make decision based on GNU
properties.

* elf-bfd.h (elf_backend_data): Change setup_gnu_properties
to return bfd *.
(_bfd_elf_link_setup_gnu_properties): Return bfd *.
* elf-properties.c (_bfd_elf_link_setup_gnu_properties): Return
the first relocatable ELF input with GNU properties.

7 years agoi386: Simplify VxWorks for non-PIC
H.J. Lu [Thu, 27 Apr 2017 15:55:36 +0000 (08:55 -0700)]
i386: Simplify VxWorks for non-PIC

Change

  if (PIC)
    {
      #1
    }
  else
    {
      #2
      if (VxWorks)
        {
          #3
        }
    }
  #4
  if (VxWorks && !PIC)
    {
      #5
    }

to

  #4
  if (PIC)
    {
      #1
    }
  else
    {
      #2
      if (VxWorks)
        {
          #3
          #5
        }
    }

* elf32-i386.c (elf_i386_finish_dynamic_sections): Simplify
VxWorks for non-PIC.

7 years agoRead corrrect auxiliary entry in AIX
Ulrich Weigand [Thu, 27 Apr 2017 13:57:08 +0000 (15:57 +0200)]
Read corrrect auxiliary entry in AIX

Fix handling of XCOFF function auxiliary entries, in particular when
the xlc -qfuncsect or gcc -ffunction-sections compiler option is used
in AIX.  Also handle C_WEAKEXT storage class.

gdb/
2016-10-21  Sangamesh Mallayya  <sangamesh.swamy@in.ibm.com>
    Ulrich Weigand  <uweigand@de.ibm.com>

* xcoffread.c (read_xcoff_symtab): Read correct function auxiliary
entry if xlc -qfuncsect or gcc -ffunction-sections compiler option
is used in AIX.
(read_xcoff_symtab): Handle C_WEAKEXT storage class.
(process_xcoff_symbol): Likewise.
(scan_xcoff_symtab): Likewise.

Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com>
7 years agoMIPS16/GAS: Factor out duplicate symbol value conversion code
Maciej W. Rozycki [Thu, 27 Apr 2017 01:25:33 +0000 (02:25 +0100)]
MIPS16/GAS: Factor out duplicate symbol value conversion code

Factor out and consolidate duplicate section-relative to PC-relative
symbol value conversion in `mips16_extended_frag' and `md_convert_frag'
used for MIPS16 relaxation, observing that the final calculation in the
latter function implies `stretch == 0'.  Sanitize the formatting of code
moved.

gas/
* config/tc-mips.c (mips16_pcrel_val): New function, factored
out from...
(mips16_extended_frag): ... here.
(md_convert_frag): Use `mips16_pcrel_val' rather than repeated
code in MIPS16 relaxation, with `stretch' hardcoded to 0.

7 years agoMIPS16/GAS: Rename the LONG_BRANCH relaxation flag
Maciej W. Rozycki [Thu, 27 Apr 2017 01:13:21 +0000 (02:13 +0100)]
MIPS16/GAS: Rename the LONG_BRANCH relaxation flag

Following commit 177b4a6ad004 ("infinite loop in mips16 assembler
relaxation"), <https://sourceware.org/ml/binutils/2002-03/msg00345.html>
the LONG_BRANCH flag used in MIPS16 relaxation has lost its use for
branches.  Complement commit 88a7ef168927 ("MIPS16/GAS: Restore
unsupported relocation diagnostics") then, which has removed the remains
of code deactivated by the former commit, and rename the flag to
ALWAYS_EXTENDED, more accurately reflecting its current use to select
the extended form of PC-relative ADDIU, DADDIU, LD and LW instructions.

gas/
* config/tc-mips.c (RELAX_MIPS16_LONG_BRANCH): Rename to...
(RELAX_MIPS16_ALWAYS_EXTENDED): ... this.
(RELAX_MIPS16_MARK_LONG_BRANCH): Rename to...
(RELAX_MIPS16_MARK_ALWAYS_EXTENDED): ... this.
(RELAX_MIPS16_CLEAR_LONG_BRANCH): Rename to...
(RELAX_MIPS16_CLEAR_ALWAYS_EXTENDED): ... this.
(mips16_extended_frag): Adjust accordingly.

7 years agoRemove some MAX_REGISTER_SIZE uses in ia64-tdep.c
Alan Hayward [Thu, 27 Apr 2017 10:38:14 +0000 (11:38 +0100)]
Remove some MAX_REGISTER_SIZE uses in ia64-tdep.c

gdb/
* ia64-tdep.c (examine_prologue): Use get_frame_register_unsigned.
(ia64_sigtramp_frame_prev_register): Use read_memory_unsigned_integer.
(ia64_access_reg): Use get_frame_register_unsigned.
(ia64_access_rse_reg): Likewise.
(ia64_libunwind_frame_prev_register): Likewise.

7 years agoTidy S_FORCE_RELOC
Alan Modra [Thu, 27 Apr 2017 02:50:10 +0000 (12:20 +0930)]
Tidy S_FORCE_RELOC

Separate out symbol flag reasons from section reasons to force a
reloc.  Yes, this adds another section test to the local symbol case
too.

* symbols.c (S_FORCE_RELOC): Separate section and symbol tests.

7 years agoConstify elf_backend_eh_frame_address_size
Alan Modra [Thu, 27 Apr 2017 02:33:39 +0000 (12:03 +0930)]
Constify elf_backend_eh_frame_address_size

* elf-bfd.h (struct elf_backend_data): Make asection param of
elf_backend_eh_frame_address_size const.
(_bfd_elf_eh_frame_address_size): Likewise.
* elf32-m32c.c (_bfd_m32c_elf_eh_frame_address_size): Likewise.
* elf32-msp430.c (elf32_msp430_eh_frame_address_size): Likewise.
* elfxx-mips.c (_bfd_mips_elf_eh_frame_address_size): Likewise.
* elfxx-mips.h (_bfd_mips_elf_eh_frame_address_size): Likewise.
* elf-eh-frame.c (_bfd_elf_eh_frame_address_size): Likewise.
(next_cie_fde_offset): Constify params.
(offset_adjust, adjust_eh_frame_local_symbols): Likewise.

7 years agoEdit .eh_frame symbols
Alan Modra [Thu, 27 Apr 2017 01:38:14 +0000 (11:08 +0930)]
Edit .eh_frame symbols

Experimental support for moving symbols defined in .eh_frame as their
CIEs/FDEs are edited or merged.

* elf-bfd.h (struct eh_cie_fde): Add aug_str_len and aug_data_len.
(_bfd_elf_adjust_eh_frame_global_symbol): Declare.
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Set aug_str_len and
aug_data_len.
(offset_adjust): New function.
(_bfd_elf_adjust_eh_frame_global_symbol): Likewise.
(adjust_eh_frame_local_symbols): Likewise.
(_bfd_elf_discard_section_eh_frame): Call adjust_eh_frame_local_symbols
after changing anything.  Return true if anything changed.
* elflink.c (bfd_elf_discard_info): If .eh_frame changed, call
_bfd_elf_adjust_eh_frame_global_symbol for globals.

7 years agoClear dynstr_index when forcing symbols local
Alan Modra [Thu, 27 Apr 2017 01:36:33 +0000 (11:06 +0930)]
Clear dynstr_index when forcing symbols local

This is really just cosmetic, but it does protect a little from
accidentally reading a stale value.

* elflink.c (_bfd_elf_link_hash_hide_symbol): Clear dynstr_index
when force_local.

7 years agoPowerPC undefweak handling
Alan Modra [Wed, 26 Apr 2017 23:49:26 +0000 (09:19 +0930)]
PowerPC undefweak handling

This patch fixes a number of cases where -z nodynamic-undefined-weak
was not effective in preventing dynamic relocations or linkage stubs.

* elf32-ppc.c (UNDEFWEAK_NO_DYNAMIC_RELOC): Define.
(ppc_elf_select_plt_layout, ppc_elf_tls_setup): Use it.
(ppc_elf_adjust_dynamic_symbol, allocate_dynrelocs): Likewise.
(ppc_elf_relocate_section): Likewise.  Delete silly optimisation
for undef and undefweak dyn_relocs.
* elf64-ppc.c (UNDEFWEAK_NO_DYNAMIC_RELOC): Define.
(ppc64_elf_adjust_dynamic_symbol, ppc64_elf_tls_setup): Use it.
(allocate_got, allocate_dynrelocs): Likewise.
(ppc64_elf_relocate_section): Likewise.

7 years ago[GOLD] testsuite/plugin_section_order.c fix
Alan Modra [Wed, 26 Apr 2017 23:38:09 +0000 (09:08 +0930)]
[GOLD] testsuite/plugin_section_order.c fix

* testsuite/plugin_section_order.c (onload): Add missing break.

7 years agoAutomatic date update in version.in
GDB Administrator [Thu, 27 Apr 2017 00:00:56 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agoMIPS/GAS: Fix `.option picX' handling with relaxation
Maciej W. Rozycki [Wed, 26 Apr 2017 23:47:15 +0000 (00:47 +0100)]
MIPS/GAS: Fix `.option picX' handling with relaxation

Correct the handling of `.option pic0' and `.option pic2' GAS pseudo-ops
in relaxation and use the setting of `mips_pic' (which these directives
control) as at the time a relaxed frag has been created rather than the
final `mips_pic' setting at the end of the source file processed.

To do so record whether `mips_pic' is NO_PIC or not in the frag itself
and use this information throughout relaxation instead of `mips_pic' to
decide which of NO_PIC or SVR4_PIC to produce machine code for, fixing
code generation and removing a possible fatal failure reproducible with:

$ as -32 --relax-branch -o option-pic-relax-3.o option-pic-relax-3.s
option-pic-relax-3.s: Assembler messages:
option-pic-relax-3.s:7: Warning: relaxed out-of-range branch into a jump
option-pic-relax-3.s: Internal error in cvt_frag_to_fill at .../gas/write.c:490.
Please report this bug.
$

using the test source included, due to a buffer overrun in filling the
variable part of a frag.

Likewise use the `fx_tcbit2' flag of a BFD_RELOC_16_PCREL_S2 fixup to
handle the simple case of substituting an out of range unconditional
branch with an equivalent absolute jump in NO_PIC code.

Retain the current way of VXWORKS_PIC use, which commit 41a1578ed17c
("MIPS/GAS: Sanitize `.option picX' pseudo-op") has forbidden the use of
`.option picX' with.

gas/
* config/tc-mips.c (RELAX_ENCODE): Add `PIC' flag.
(RELAX_PIC): New macro.
(RELAX_USE_SECOND, RELAX_SECOND_LONGER, RELAX_NOMACRO)
(RELAX_DELAY_SLOT, RELAX_DELAY_SLOT_16BIT)
(RELAX_DELAY_SLOT_SIZE_FIRST, RELAX_DELAY_SLOT_SIZE_SECOND):
Shift bits.
(RELAX_BRANCH_ENCODE): Add `pic' flag.
(RELAX_BRANCH_UNCOND, RELAX_BRANCH_LIKELY, RELAX_BRANCH_LINK)
(RELAX_BRANCH_TOOFAR): Shift bits.
(RELAX_BRANCH_PIC): New macro.
(RELAX_MICROMIPS_ENCODE): Add `pic' flag.
(RELAX_MICROMIPS_PIC): New macro.
(RELAX_MICROMIPS_UNCOND, RELAX_MICROMIPS_COMPACT)
(RELAX_MICROMIPS_LINK, RELAX_MICROMIPS_NODS)
(RELAX_MICROMIPS_RELAX32): Shift bits.
(relax_close_frag): Pass `mips_pic' setting to RELAX_ENCODE.
(append_insn): Pass `mips_pic' setting to RELAX_BRANCH_ENCODE
and RELAX_MICROMIPS_ENCODE, and record it in `fx_tcbit2' of the
first fixup created.
(md_apply_fix) <BFD_RELOC_16_PCREL_S2>: Use `fx_tcbit2' of the
fixup processed rather than `mips_pic' in choosing to relax an
out of range branch to a jump.
(relaxed_branch_length): Use the `pic' flag of the relaxed frag
rather than `mips_pic'.
(relaxed_micromips_32bit_branch_length): Likewise.
(md_estimate_size_before_relax): Likewise.
(md_convert_frag): Likewise.

* testsuite/gas/mips/option-pic-relax-0.d: New test.
* testsuite/gas/mips/option-pic-relax-1.d: New test.
* testsuite/gas/mips/option-pic-relax-2.d: New test.
* testsuite/gas/mips/option-pic-relax-3.d: New test.
* testsuite/gas/mips/option-pic-relax-3a.d: New test.
* testsuite/gas/mips/option-pic-relax-4.d: New test.
* testsuite/gas/mips/option-pic-relax-5.d: New test.
* testsuite/gas/mips/option-pic-relax-2.l: New stderr output.
* testsuite/gas/mips/option-pic-relax-3.l: New stderr output.
* testsuite/gas/mips/option-pic-relax-4.l: New stderr output.
* testsuite/gas/mips/option-pic-relax-5.l: New stderr output.
* testsuite/gas/mips/option-pic-relax-0.s: New test source.
* testsuite/gas/mips/option-pic-relax-1.s: New test source.
* testsuite/gas/mips/option-pic-relax-2.s: New test source.
* testsuite/gas/mips/option-pic-relax-3.s: New test source.
* testsuite/gas/mips/option-pic-relax-4.s: New test source.
* testsuite/gas/mips/option-pic-relax-5.s: New test source.
* testsuite/gas/mips/mips.exp: Run the new tests.

7 years agox86: Add DT_PLTRELSZ/DT_PLTREL/DT_JMPREL for PLT relocation
H.J. Lu [Wed, 26 Apr 2017 22:34:00 +0000 (15:34 -0700)]
x86: Add DT_PLTRELSZ/DT_PLTREL/DT_JMPREL for PLT relocation

x86, PLT relocation may contain R_386_TLS_DESC or R_X86_64_TLSDESC
even though there is no real PLT.  We need to add DT_PLTRELSZ, DT_PLTREL
and DT_JMPREL if there is a .rel.plt/.rela.plt section.

bfd/

* elf32-i386.c (elf_i386_size_dynamic_sections): Alwasys add
DT_PLTRELSZ, DT_PLTREL and DT_JMPREL for .rel.plt section.
* elf64-x86-64.c (elf_x86_64_size_dynamic_sections): Alwasys
add DT_PLTRELSZ, DT_PLTREL and DT_JMPREL for .rela.plt section.

ld/

* testsuite/ld-i386/tlsdesc2.d: New test.
* testsuite/ld-x86-64/tlsdesc2.d: Likewise.

7 years agoFix a seg-fault when processing a corrupt binary containing reloc(s) with negative...
Nick Clifton [Wed, 26 Apr 2017 15:30:22 +0000 (16:30 +0100)]
Fix a seg-fault when processing a corrupt binary containing reloc(s) with negative addresses.

PR binutils/21434
* reloc.c (bfd_perform_relocation): Check for a negative address
in the reloc.

7 years agoFix PR number in ChangeLog comment.
Nick Clifton [Wed, 26 Apr 2017 14:45:41 +0000 (15:45 +0100)]
Fix PR number in ChangeLog comment.

7 years agoFix invocation of stat() on a NULL pointer.
Nick Clifton [Wed, 26 Apr 2017 14:42:03 +0000 (15:42 +0100)]
Fix invocation of stat() on a NULL pointer.

PR binutils/21407
* bucomm.c (get_file_size): Return -1 if file_name is NULL.
* ar.c (main): Fail with usage() invocation if no file names are
provided.

7 years agoImprove decoding of corrupt/unrecognised gnu build attribute notes.
Nick Clifton [Wed, 26 Apr 2017 13:23:26 +0000 (14:23 +0100)]
Improve decoding of corrupt/unrecognised gnu build attribute notes.

* readelf.c (process_section_headers): Warn about overlarge
sections.
(print_gnu_build_attribute_name): Print the number of unrecognised
note types.  Fix formatting in the presence of errors.
(testsuite/binutils-all/note-2-32.s): Fix encoding of numeric notes.
(testsuite/binutils-all/note-2-64.s): Likewise.

7 years ago[gdbarch] New method "execute_dwarf_cfa_vendor_op" and migrate SPARC to it
Jiong Wang [Wed, 26 Apr 2017 13:05:03 +0000 (14:05 +0100)]
[gdbarch] New method "execute_dwarf_cfa_vendor_op" and migrate SPARC to it

Recently a feature called "return address signing" has been added to GCC to
prevent stack smash stack on AArch64.  For details please refer:

  https://gcc.gnu.org/ml/gcc-patches/2017-01/msg00376.html

GDB needs to be aware of this feature so it can restore the original return
address which is critical for unwinding.

On compiler side, whenever return address, i.e. LR register, is mangled or
restored by hardware instruction, compiler is expected to generate a
DW_CFA_AARCH64_negate_ra_state to toggle return address signing status.

DW_CFA_AARCH64_negate_ra_state is using the same CFI number and
therefore need to be multiplexed with DW_CFA_GNU_window_save which was designed
for SPARC.

A new gdbarch method "execute_dwarf_cfa_vendor_op" is introduced by this patch.
It's parameters has been restricted to those only needed by SPARC and AArch64
for multiplexing DW_CFA_GNU_window_save which is a CFI operation takes none
operand.  Should any further DWARF CFI operation want to be multiplexed in the
future,  the parameter list can be extended.  Below is the current function
prototype.

   typedef int (gdbarch_execute_dwarf_cfa_vendor_op_ftype)
     (struct gdbarch *gdbarch, gdb_byte op, struct dwarf2_frame_state *fs);

DW_CFA_GNU_window_save support for SPARC is migrated to this new gdbarch
method by this patch.

gdb/
* gdbarch.sh: New gdbarch method execute_dwarf_cfa_vendor_op.
* gdbarch.c: Regenerated.
* gdbarch.h: Regenerated.
* dwarf2-frame.c (dwarf2_frame_state_alloc_regs): Made the
visibility external.
(execute_cfa_program): Call execute_dwarf_cfa_vendor_op for CFI
between DW_CFA_lo_user and DW_CFA_high_user inclusive.
(enum cfa_how_kind): Move to ...
(struct dwarf2_frame_state_reg_info): Likewise.
(struct dwarf2_frame_state): Likewise.
* dwarf2-frame.h: ... here.
(dwarf2_frame_state_alloc_regs): New declaration.
* sparc-tdep.c (sparc_execute_dwarf_cfa_vendor_op): New function.
(sparc32_gdbarch_init): Register execute_dwarf_cfa_vendor_op hook.

7 years agoPR ld/21334: Always call `_bfd_elf_link_renumber_dynsyms' if required
Maciej W. Rozycki [Mon, 24 Apr 2017 19:15:31 +0000 (20:15 +0100)]
PR ld/21334: Always call `_bfd_elf_link_renumber_dynsyms' if required

Complement commit e17b0c351f0b ("MIPS/BFD: Respect the ELF gABI dynamic
symbol table sort requirement") and correct an inconsistency in dynamic
symbol accounting data causing an assertion failure in the MIPS backend:

ld: BFD (GNU Binutils) 2.28.51.20170330 assertion fail
../../binutils-gdb/bfd/elfxx-mips.c:3860

in the course of making a GOT entry in a static binary to satisfy a GOT
relocation present in input, due to the local dynamic symbol count not
having been established.

To do so let backends request `_bfd_elf_link_renumber_dynsyms' to be
always called, rather than where a dynamic binary is linked only, and
then make this request in the MIPS backend.

bfd/
PR ld/21334
* elf-bfd.h (elf_backend_data): Add `always_renumber_dynsyms'
member.
* elfxx-target.h [!elf_backend_always_renumber_dynsyms]
(elf_backend_always_renumber_dynsyms): Define.
(elfNN_bed): Initialize `always_renumber_dynsyms' member.
* elfxx-mips.h (elf_backend_always_renumber_dynsyms): Define.
* elflink.c (bfd_elf_size_dynamic_sections): Also call
`_bfd_elf_link_renumber_dynsyms' if the backend has requested
it.
(bfd_elf_size_dynsym_hash_dynstr): Likewise.

ld/
PR ld/21334
* testsuite/ld-mips-elf/pr21334.dd: New test.
* testsuite/ld-mips-elf/pr21334.gd: New test.
* testsuite/ld-mips-elf/pr21334.ld: New test linker script.
* testsuite/ld-mips-elf/pr21334.s: New test source.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.

7 years agoELF/BFD: Limit `_bfd_elf_link_renumber_dynsyms' call in section GC
Maciej W. Rozycki [Mon, 24 Apr 2017 19:13:28 +0000 (20:13 +0100)]
ELF/BFD: Limit `_bfd_elf_link_renumber_dynsyms' call in section GC

Consistently call `_bfd_elf_link_renumber_dynsyms' only if linking a
dynamic binary, complementing code in `bfd_elf_size_dynsym_hash_dynstr'
and commit ccabcbe51e85 ("New attempt at fixing MIPS --gc-sections et
al."), <https://sourceware.org/ml/binutils/2005-08/msg00258.html>.

bfd/
* elflink.c (bfd_elf_size_dynamic_sections): Only call
`_bfd_elf_link_renumber_dynsyms' after section GC if dynamic
sections have been created.

7 years agoMIPS/readelf: With `-A' also dump GOT in static binaries
Maciej W. Rozycki [Mon, 24 Apr 2017 19:41:33 +0000 (20:41 +0100)]
MIPS/readelf: With `-A' also dump GOT in static binaries

A static, non-relocated global offset table will be embedded in static
binaries produced from objects containing any kind of GOT relocations,
generally PIC code.  All symbols will have been resolved in static link
in such binaries making all GOT entries local and their values final as
there is no run-time load processing further performed.

Dump such GOT with `readelf -A' like already done with regular GOT, to
make it easier to examine static code that uses accesses via the GOT
pointer.  There will be no dynamic segment or section in a static binary
to get the GOT pointer (DT_PLTGOT) from, so use section headers to find
a `.got' section instead.

binutils/
* readelf.c (process_mips_specific): Add static GOT support.

7 years agoFix seg-fault attempting to compress a debug section in a corrupt binary.
Nick Clifton [Wed, 26 Apr 2017 12:07:49 +0000 (13:07 +0100)]
Fix seg-fault attempting to compress a debug section in a corrupt binary.

PR binutils/21431
* compress.c (bfd_init_section_compress_status): Check the return
value from bfd_malloc.

7 years agoxtensa_pseudo_register_read/write - Use regcache_raw_read_unsigned
Alan Hayward [Wed, 26 Apr 2017 09:32:35 +0000 (10:32 +0100)]
xtensa_pseudo_register_read/write - Use regcache_raw_read_unsigned

gdb/
* xtensa-tdep.c (xtensa_pseudo_register_read): Use
regcache_raw_read_unsigned.
(xtensa_pseudo_register_write): Likewise.

7 years agonds32: Abort instead of returning REG_UNKNOWN
Alan Hayward [Wed, 26 Apr 2017 08:57:15 +0000 (09:57 +0100)]
nds32: Abort instead of returning REG_UNKNOWN

gdb/
* nds32-tdep.c (nds32_pseudo_register_read): Abort on errors.
(nds32_pseudo_register_write): Likewise.

7 years agoAutomatic date update in version.in
GDB Administrator [Wed, 26 Apr 2017 00:00:36 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agoChange readonly_p to bool
Yao Qi [Tue, 25 Apr 2017 20:32:05 +0000 (21:32 +0100)]
Change readonly_p to bool

This patch changes readonly_p type to bool.

gdb:

2017-04-25  Yao Qi  <yao.qi@linaro.org>

* regcache.c (struct regcache) <readonly_p>: Change its type
to bool.
(regcache_xmalloc_1): Update parameter type and callers update.

7 years agoMIPS/readelf: Simplify GOT[1] data availability check
Maciej W. Rozycki [Tue, 11 Apr 2017 23:03:41 +0000 (00:03 +0100)]
MIPS/readelf: Simplify GOT[1] data availability check

Unavailable data is handled gracefully in MIPS GOT processing done by
`print_mips_got_entry', so all that is needed in special GOT[1] handling
is to verify whether data can be retrieved for the purpose of the GNU
marker check done with `byte_get'.  Remove the extra error reporting
code then, introduced with commit 75ec1fdbb797 ("Fix runtime seg-fault
in readelf when parsing a corrupt MIPS binary.") in the course of
addressing PR binutils/21344, and defer the error case to regular local
GOT entry processing.

binutils/
* readelf.c (process_mips_specific): Remove error reporting from
GOT[1] processing.

7 years agoMIPS/readelf: Remove extraneous null GOT data check
Maciej W. Rozycki [Tue, 11 Apr 2017 23:02:13 +0000 (00:02 +0100)]
MIPS/readelf: Remove extraneous null GOT data check

Null data is handled gracefully throughout in MIPS GOT processing, with
addresses printed normally and unavailable data shown as `<unknown>' by
`print_mips_got_entry', and special processing code for GOT[1] doing an
explicit check.  Remove an unwanted null GOT data check then, introduced
with commit 592458412fb2 in the course of addressing PR binutils/12855.

binutils/
* readelf.c (process_mips_specific): Remove null GOT data check.

7 years ago[ARC] Enhance enter/leave mnemonics.
Claudiu Zissulescu [Tue, 25 Apr 2017 15:07:00 +0000 (17:07 +0200)]
[ARC] Enhance enter/leave mnemonics.

enter/leave mnemonics are enhanced to not only accept register ranges
but also single register (i.e., r13) or even no GPR register at all.

gas/
2017-04-25  Claudiu Zissulescu  <claziss@synopsys.com>

* testsuite/gas/arc/leave_enter.d: Update test.
* testsuite/gas/arc/leave_enter.s: Likewise.

opcodes/
2017-04-25  Claudiu Zissulescu  <claziss@synopsys.com>

* arc-dis.c (print_insn_arc): Smartly print enter/leave mnemonics.
* arc-opc.c (insert_r13el): New function.
(R13_EL): Define.
* arc-tbl.h: Add new enter/leave variants.

7 years ago[ARC] Prefer NOP instead of MOV 0,0
Claudiu Zissulescu [Tue, 25 Apr 2017 15:07:00 +0000 (17:07 +0200)]
[ARC] Prefer NOP instead of MOV 0,0

NOP and MOV 0,0 are having the same encoding. As MOV mnemonic is
located before NOP in the instruction table, the disassembler prints
MOV 0,0 for NOP. Reorder the instructions such that NOP is first.

gas/
2017-04-25  Claudiu Zissulescu  <claziss@synopsys.com>

* testsuite/gas/arc/b.d: Update test.
* testsuite/gas/arc/noargs_hs.d: Likewise.

opcode/
2017-04-25  Claudiu Zissulescu  <claziss@synopsys.com>

* arc-tbl.h: Reorder NOP entry to be before MOV instructions.

7 years agoChange gdbarch_wchar_bit for AArch64 and ARM
Yao Qi [Tue, 25 Apr 2017 14:15:54 +0000 (15:15 +0100)]
Change gdbarch_wchar_bit for AArch64 and ARM

The size of wchar_t on AArch64 and ARM is 4-byte, so we can use the
default value (4*TARGET_CHAR_BIT).

This patch fixes some fails in gdb.cp/wide_char_types.exp on
aarch64-linux.

gdb:

2017-04-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-tdep.c (aarch64_gdbarch_init): Don't call
set_gdbarch_wchar_bit.
* arm-tdep.c (arm_gdbarch_init): Likewise.

7 years agoMIPS16/opcodes: Add `-M no-aliases' disassembler option help text
Maciej W. Rozycki [Tue, 25 Apr 2017 10:49:37 +0000 (11:49 +0100)]
MIPS16/opcodes: Add `-M no-aliases' disassembler option help text

Complement commit 986e18a5a9fd ("Add a second 'pinfo' member to
mips_opcode to extend number of available bits"),
<https://sourceware.org/ml/binutils/2005-01/msg00261.html>, and add a
help text for the `-M no-aliases' disassembler option.

opcodes/
* mips-dis.c (print_mips_disassembler_options): Add
`no-aliases'.

7 years agoMIPS16/opcodes: Annotate instruction aliases
Maciej W. Rozycki [Tue, 25 Apr 2017 10:44:29 +0000 (11:44 +0100)]
MIPS16/opcodes: Annotate instruction aliases

Complement commit 986e18a5a9fd ("Add a second 'pinfo' member to
mips_opcode to extend number of available bits"),
<https://sourceware.org/ml/binutils/2005-01/msg00261.html>, and annotate
MIPS16 NOP, LA, DLA and the synthetic forms of LD and LW instructions as
aliases.  These correspond to MOVE, and the PC-relative ADDIU, DADDIU,
LD and LW hardware instructions respectively.

binutils/
* testsuite/binutils-all/mips/mips16-alias.d: New test.
* testsuite/binutils-all/mips/mips16-noalias.d: New test.
* testsuite/binutils-all/mips/mips16-alias.s: New test source.
* testsuite/binutils-all/mips/mips.exp: Run the new tests.

opcodes/
* mips16-opc.c (AL): New macro.
(mips16_opcodes): Mark "nop", "la", "dla", and synthetic forms
of "ld" and "lw" as aliases.

7 years agoMIPS/GAS: Correct BFD_RELOC_MIPS16_16_PCREL_S1 fixup size
Maciej W. Rozycki [Tue, 25 Apr 2017 09:20:14 +0000 (10:20 +0100)]
MIPS/GAS: Correct BFD_RELOC_MIPS16_16_PCREL_S1 fixup size

Correct the size of a BFD_RELOC_MIPS16_16_PCREL_S1 fixup made in
`md_convert_frag', fixing a bug introduced with commit c9775dde3277
("MIPS16: Add R_MIPS16_PC16_S1 branch relocation support)".  Add test
cases to verify that the overflow of this fixup's in-place addend is
still correctly detected.

gas/
* config/tc-mips.c (md_convert_frag): Correct
BFD_RELOC_MIPS16_16_PCREL_S1 fixup size.
* testsuite/gas/mips/mips16-branch-addend-4.d: New test.
* testsuite/gas/mips/mips16-branch-addend-5.d: New test.
* testsuite/gas/mips/mips16-branch-addend-5.l: New stderr
output.
* testsuite/gas/mips/mips16-branch-addend-4.s: New test source.
* testsuite/gas/mips/mips16-branch-addend-5.s: New test source.
* testsuite/gas/mips/mips.exp: Run the new tests.

7 years agoFix build on gcc < 5 (std::is_trivially_copyable missing)
Pedro Alves [Tue, 25 Apr 2017 09:58:57 +0000 (10:58 +0100)]
Fix build on gcc < 5 (std::is_trivially_copyable missing)

Ref: https://sourceware.org/ml/gdb-patches/2017-04/msg00660.html

Simply skip the poisoning on older compilers.

gdb/ChangeLog:
2017-04-25  Pedro Alves  <palves@redhat.com>

* common/poison.h [!HAVE_IS_TRIVIALLY_COPYABLE] (IsRelocatable)
(BothAreRelocatable, memcopy, memmove): Don't define.
* common/traits.h (__has_feature, HAVE_IS_TRIVIALLY_COPYABLE): New
macros.

7 years agogas: sparc: fix relaxation of CALL instruction into branches in a.out targets
Jose E. Marchesi [Tue, 25 Apr 2017 09:40:43 +0000 (02:40 -0700)]
gas: sparc: fix relaxation of CALL instruction into branches in a.out targets

This patch avoids CALL instructions to be optimized into branches if
the symbols referred to in the CALL instruction are not fully resolved
at the time the assembler writes its output.

Tested in sparc64-linux-gnu and sparc-sun-sunos4.1.3 targets.
No regressions.

gas/ChangeLog:

2017-04-25  Jose E. Marchesi  <jose.marchesi@oracle.com>

PR gas/21407
* config/tc-sparc.c (md_apply_fix): Do not transform `call'
instructions into branch instructions in fixups generating
additional relocations.
* testsuite/gas/sparc/call-relax.s: New file.
* testsuite/gas/sparc/call-relax.d: Likewise.
* testsuite/gas/sparc/call-relax-aout.d: Likewise.
* testsuite/gas/sparc/sparc.exp: Test call-relax and call-relax-aout.

7 years agoPoison non-POD memset & non-trivially-copyable memcpy/memmove
Pedro Alves [Tue, 25 Apr 2017 00:27:41 +0000 (01:27 +0100)]
Poison non-POD memset & non-trivially-copyable memcpy/memmove

This patch catches invalid initialization of non-POD types with
memset, at compile time.

This is what I used to catch the problems fixed by the previous
patches in the series:

  $ make -k 2>&1 | grep "deleted function"
  src/gdb/breakpoint.c:951:53: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = bp_location; <template-parameter-1-2> = void; size_t = long unsigned int]’
  src/gdb/breakpoint.c:7325:32: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = bp_location; <template-parameter-1-2> = void; size_t = long unsigned int]’
  src/gdb/btrace.c:1153:42: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = btrace_insn; <template-parameter-1-2> = void; size_t = long unsigned int]’
...

gdb/ChangeLog:
2017-04-25  Pedro Alves  <palves@redhat.com>

* common/common-defs.h: Include "common/poison.h".
* common/function-view.h: (Not, Or, Requires): Move to traits.h
and adjust.
* common/poison.h: New file.
* common/traits.h: Include <type_traits>.
(Not, Or, Requires): New, moved from common/function-view.h.

7 years agoDon't memset non-POD types: struct breakpoint
Pedro Alves [Tue, 25 Apr 2017 00:27:42 +0000 (01:27 +0100)]
Don't memset non-POD types: struct breakpoint

Eh, struct breakpoint was made non-POD just today, with commit
d28cd78ad820e3 ("Change breakpoint event locations to
event_location_up").  :-)

  src/gdb/breakpoint.c: In function ‘void init_raw_breakpoint_without_location(breakpoint*, gdbarch*, bptype, const breakpoint_ops*)’:
  src/gdb/breakpoint.c:7447:28: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = breakpoint; <template-parameter-1-2> = void; size_t = long unsigned int]’
     memset (b, 0, sizeof (*b));
      ^
  In file included from src/gdb/common/common-defs.h:85:0,
   from src/gdb/defs.h:28,
   from src/gdb/breakpoint.c:20:
  src/gdb/common/poison.h:56:7: note: declared here
   void *memset (T *s, int c, size_t n) = delete;
 ^

gdb/ChangeLog:
2017-04-25  Pedro Alves  <palves@redhat.com>

* breakpoint.h (struct breakpoint): In-class initialize all
fields.  Make boolean fields "bool".
* breakpoint.c (init_raw_breakpoint_without_location): Remove
memset call and initializations no longer necessary.

7 years agoDon't memset non-POD types: struct btrace_insn
Pedro Alves [Tue, 25 Apr 2017 00:27:42 +0000 (01:27 +0100)]
Don't memset non-POD types: struct btrace_insn

struct btrace_insn is not a POD [1] so we shouldn't be using memset to
initialize it [2].

Use list-initialization instead, wrapped in a "pt insn to btrace insn"
function, which looks like just begging to be added next to the
existing pt_reclassify_insn/pt_btrace_insn_flags functions.

[1] - because its field "flags" is not POD, because enum_flags has a
non-trivial default ctor.

gdb/ChangeLog:
2017-04-25  Pedro Alves  <palves@redhat.com>

* btrace.c (pt_btrace_insn_flags): Change parameter type to
reference.
(pt_btrace_insn): New function.
(ftrace_add_pt): Remove memset call and use pt_btrace_insn.

7 years agoDon't memset non-POD types: struct bp_location
Pedro Alves [Tue, 25 Apr 2017 00:27:42 +0000 (01:27 +0100)]
Don't memset non-POD types: struct bp_location

struct bp_location is not a POD, so we shouldn't be using memset to
initialize it.

Caught like this:

  src/gdb/breakpoint.c: In function ‘bp_location** get_first_locp_gte_addr(CORE_ADDR)’:
  src/gdb/breakpoint.c:950:53: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = bp_location; <template-parameter-1-2> = void; size_t = long unsigned int]’
     memset (&dummy_loc, 0, sizeof (struct bp_location));
       ^
  In file included from src/gdb/defs.h:28:0,
   from src/gdb/breakpoint.c:20:
  src/gdb/common/common-defs.h:126:7: note: declared here
   void *memset (T *s, int c, size_t n) = delete;
 ^

gdb/ChangeLog:
2017-04-25  Pedro Alves  <palves@redhat.com>

* ada-lang.c (ada_catchpoint_location): Now a "class".  Remove
"base" field and inherit from "bp_location" instead.  Add
non-default ctor.
(allocate_location_exception): Use new non-default ctor.
* breakpoint.c (get_first_locp_gte_addr): Remove memset call.
(init_bp_location): Convert to ...
(bp_location::bp_location): ... this new ctor, and remove memset
call.
(base_breakpoint_allocate_location): Use the new non-default ctor.
* breakpoint.h (bp_location): Now a class.  Declare default and
non-default ctors.  In-class initialize all members.
(init_bp_location): Remove declaration.

7 years agoDon't memcpy non-trivially-copyable types: Make enum_flags triv. copyable
Pedro Alves [Tue, 25 Apr 2017 00:27:42 +0000 (01:27 +0100)]
Don't memcpy non-trivially-copyable types: Make enum_flags triv. copyable

The delete-memcpy-with-non-trivial-types patch exposed many instances
of this problem:

  src/gdb/btrace.h: In function ‘btrace_insn_s* VEC_btrace_insn_s_quick_insert(VEC_btrace_insn_s*, unsigned int, const btrace_insn_s*, const char*, unsigned int)’:
  src/gdb/common/vec.h:948:62: error: use of deleted function ‘void* memmove(T*, const U*, size_t) [with T = btrace_insn; U = btrace_insn; <template-parameter-1-3> = void; size_t = long unsigned int]’
     memmove (slot_ + 1, slot_, (vec_->num++ - ix_) * sizeof (T));    \
^
  src/gdb/common/vec.h:436:1: note: in expansion of macro ‘DEF_VEC_FUNC_O’
   DEF_VEC_FUNC_O(T)         \
   ^
  src/gdb/btrace.h:84:1: note: in expansion of macro ‘DEF_VEC_O’
   DEF_VEC_O (btrace_insn_s);
   ^
[...]
  src/gdb/common/vec.h:1060:31: error: use of deleted function ‘void* memcpy(T*, const U*, size_t) [with T = btrace_insn; U = btrace_insn; <template-parameter-1-3> = void; size_t = long unsigned int]’
  sizeof (T) * vec2_->num);       \
 ^
  src/gdb/common/vec.h:437:1: note: in expansion of macro ‘DEF_VEC_ALLOC_FUNC_O’
   DEF_VEC_ALLOC_FUNC_O(T)         \
   ^
  src/gdb/btrace.h:84:1: note: in expansion of macro ‘DEF_VEC_O’
   DEF_VEC_O (btrace_insn_s);
   ^

So, VECs (given it's C roots) rely on memcpy/memcpy of VEC elements to
be well defined, in order to grow/reallocate its internal elements
array.  This means that we can only put trivially copyable types in
VECs.  E.g., if a type requires using a custom copy/move ctor to
relocate, then we can't put it in a VEC (so we use std::vector
instead).  But, as shown above, we're violating that requirement.

btrace_insn is currently not trivially copyable, because it contains
an enum_flags field, and that is itself not trivially copyable.  This
patch corrects that, by simply removing the user-provided copy
constructor and assignment operator.  The compiler-generated versions
work just fine.

Note that std::vector relies on std::is_trivially_copyable too to know
whether it can reallocate its elements with memcpy/memmove instead of
having to call copy/move ctors and dtors, so if we have types in
std::vectors that weren't trivially copyable because of enum_flags,
this will make such vectors more efficient.

gdb/ChangeLog:
2017-04-25  Pedro Alves  <palves@redhat.com>

* common/enum-flags.h (enum_flags): Don't implement copy ctor and
assignment operator.

7 years agoAutomatic date update in version.in
GDB Administrator [Tue, 25 Apr 2017 00:00:36 +0000 (00:00 +0000)]
Automatic date update in version.in

7 years agox86-64: Force symbol dynamic if it isn't undefined weak
H.J. Lu [Mon, 24 Apr 2017 21:37:12 +0000 (14:37 -0700)]
x86-64: Force symbol dynamic if it isn't undefined weak

Force symbol dynamic if it isn't undefined weak.  Generate relative
relocation for GOT reference against non-dynamic symbol in PIC to
avoid unnecessary dynamic symbols.

bfd/

* elf64-x86-64.c (elf_x86_64_link_hash_entry): Add
no_finish_dynamic_symbol.
(elf_x86_64_link_hash_newfunc): Set no_finish_dynamic_symbol to
0.
(elf_x86_64_allocate_dynrelocs): If a symbol isn't undefined
weak symbol, don't make it dynamic.
(elf_x86_64_relocate_section): If a symbol isn't dynamic in PIC,
set no_finish_dynamic_symbol and generate R_X86_64_RELATIVE
relocation for GOT reference.
(elf_x86_64_finish_dynamic_symbol): Abort if
no_finish_dynamic_symbol isn't 0.

ld/

* testsuite/ld-x86-64/no-plt.exp: Also check no-plt-1e.nd.
* testsuite/ld-x86-64/no-plt-1e.nd: New file.

7 years agoi386: Force symbol dynamic if it isn't undefined weak
H.J. Lu [Mon, 24 Apr 2017 20:42:33 +0000 (13:42 -0700)]
i386: Force symbol dynamic if it isn't undefined weak

Force symbol dynamic if it isn't undefined weak.  Generate R_386_RELATIVE
relocation for R_386_GOT32 relocation against non-dynamic symbol in PIC.

PR ld/21402
* elf32-i386.c (elf_i386_allocate_dynrelocs): If a symbol isn't
undefined weak symbol, don't make it dynamic.
(elf_i386_relocate_section): If a symbol isn't dynamic in PIC,
set no_finish_dynamic_symbol and generate R_386_RELATIVE
relocation for R_386_GOT32.

7 years agoUse floatformat_totalsize_bytes
Yao Qi [Mon, 24 Apr 2017 20:29:12 +0000 (21:29 +0100)]
Use floatformat_totalsize_bytes

The code can be replaced by floatformat_totalsize_bytes.

gdb:

2017-04-24  Yao Qi  <yao.qi@linaro.org>

* doublest.c (convert_doublest_to_floatformat): Call
floatformat_totalsize_bytes.