external/binutils.git
8 years agoFix assorted ChangeLog errors
Alan Modra [Tue, 29 Dec 2015 22:50:20 +0000 (09:20 +1030)]
Fix assorted ChangeLog errors

8 years agosim: ppc: track closed state of file descriptors 0, 1, and 2.
Kevin Buettner [Mon, 16 Nov 2015 21:58:07 +0000 (14:58 -0700)]
sim: ppc: track closed state of file descriptors 0, 1, and 2.

This change tracks the "closed" state of file descriptors 0, 1, and 2,
introducing the function fdbad() to emul_netbsd.c and emul_unix.c.
Note that a function of the same name and purpose exists in
sim/common/callback.c.

This patch eliminates all of the "unresolved testcases" when testing
GDB against the powerpc simulator.

This occurs because the powerpc simulator closes, on behalf of the
testcase, the file descriptors associated with stdin, stdout, and
stderr.  GDB still needs these descriptors to communicate with the
user or, in this case, with the testing framework.

8 years agoAutomatic date update in version.in
GDB Administrator [Wed, 30 Dec 2015 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoAutomatic date update in version.in
GDB Administrator [Tue, 29 Dec 2015 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoUse libiberty's crc32 implementation in gdbserver
Patrick Palka [Mon, 2 Nov 2015 18:21:44 +0000 (13:21 -0500)]
Use libiberty's crc32 implementation in gdbserver

Tested on x86_64-pc-linux-gnu native-gdbserver, no new regressions.

gdb/gdbserver/ChangeLog:

* server.c (crc32_table): Delete.
(crc32): Use libiberty's xcrc32 function.

8 years agoAutomatic date update in version.in
GDB Administrator [Mon, 28 Dec 2015 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoCorrect nios2 _gp address computation.
Sandra Loosemore [Sun, 27 Dec 2015 20:30:26 +0000 (12:30 -0800)]
Correct nios2 _gp address computation.

2015-12-27  Sandra Loosemore  <sandra@codesourcery.com>

bfd/
* elf32-nios2.c (nios2_elf_assign_gp): Correct computation of _gp
address.
(nios2_elf32_relocate_section): Tidy code for R_NIOS2_GPREL error
messages.

8 years agosim: aarch64/msp430: fix disassembler usage
Mike Frysinger [Sun, 27 Dec 2015 06:41:27 +0000 (01:41 -0500)]
sim: aarch64/msp430: fix disassembler usage

The disasm framework reserves the private_data field for the disassemblers
themselves, not for people who use the disassembler.  Instead, there is an
application_data field for callers such as the sim.  Switch to it to avoid
random corruption/crashes when the disassemblers use private_data.

8 years agosim: unify sim-hload
Mike Frysinger [Fri, 10 Apr 2015 23:40:34 +0000 (19:40 -0400)]
sim: unify sim-hload

Pretty much all targets are using this module already, so add it to the
common list of objects.  The only oddball out here is cris and that's
because it supports loading via an offset for all the phdrs.  We drop
support for that.

8 years agosim: punt WITH_DEVICES & tconfig.h support
Mike Frysinger [Sun, 27 Dec 2015 01:20:23 +0000 (20:20 -0500)]
sim: punt WITH_DEVICES & tconfig.h support

No arch is using this anymore, and we want all new ports using the
hardware framework instead.  Punt WITH_DEVICES and the two callbacks
device_io_{read,write}_buffer.

We can also punt the tconfig.h file as no port is using it anymore.
This fixes in-tree builds that get confused by picking up the wrong
one (common/ vs <port>/) caused by commit ae7d0cac8ce971f7108d270c.

Any port that needs to set up a global define can use their own
sim-main.h file that they must provide regardless.

8 years agosim: bfin: push down mmr address/size checks
Mike Frysinger [Sun, 27 Dec 2015 00:02:07 +0000 (19:02 -0500)]
sim: bfin: push down mmr address/size checks

The bfin port is using the WITH_DEVICES framework for two reasons:
- get access to the cpu making the request (if available)
- check the alignment & size for core & system MMRs

We addressed the first part with commit dea10706e9159ba6e94eab4c25010f3,
and we handle the second part with this commit.  Arguably this is more
correct too because trying to do bad reads/writes directly (when devices
support is disabled) often results in bad memory accesses.

As part of this clean up, we also adjust all of the existing logic that
would reject invalid accesses: the code was relying on the checks never
returning, but that's not the case when things like gdb (via the user's
commands) are making the requests.  Thus we'd still end up with bad mem
accesses, or sometimes gdb being hung due to while(1) loops.

Now we can connect (most of) these models into any address and have them
work correctly.

8 years agoAutomatic date update in version.in
GDB Administrator [Sun, 27 Dec 2015 00:00:15 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agosim: bfin: avoid stack error under asan
Mike Frysinger [Sat, 26 Dec 2015 23:22:37 +0000 (18:22 -0500)]
sim: bfin: avoid stack error under asan

We set up an array of 3 elements and then index into it with a 2bit
value.  We check the range before we actually use the pointer, but
the indexing is enough to make asan upset, so just stuff a fourth
value in there to keep things simple.

8 years agosim: sim-core: pass down cpu to hw accesses when available
Mike Frysinger [Sat, 26 Dec 2015 19:16:51 +0000 (14:16 -0500)]
sim: sim-core: pass down cpu to hw accesses when available

The bfin port has been using the device callback largely so it could be
passed the cpu when available.  Add this logic to the common core code
so all ports get access to the active cpu.

The semantics of these buffer functions are changed slightly in that
errors halt the engine synchronously rather than returning the length
to the caller.  We'll probably adjust this in a follow up commit.

The bfin code isn't updated just yet as it has a bit more logic in the
device layer that needs to be unwound at which point we can delete it
entirely.

8 years agosim: mips: delete mmu stubs to move to common sim_{read,write}
Mike Frysinger [Sat, 26 Dec 2015 16:35:03 +0000 (11:35 -0500)]
sim: mips: delete mmu stubs to move to common sim_{read,write}

The only unique thing about mip's sim_{read,write} helpers is the call to
address_translation on the incoming address.  When we look closer at that
function though, we see it's just a stub that maps physical to virtual,
and the cache/return values are hardcoded.  If we delete this function,
we can then collapse all the callers and drop the custom sim_{read,write}
logic entirely.

Some day we might want to add MMU support, but when we do, we'll want to
have the common layers handle things so all targets benefit.

8 years agosim: cris: do not pass cpu when writing memory during init
Mike Frysinger [Sat, 26 Dec 2015 13:13:38 +0000 (08:13 -0500)]
sim: cris: do not pass cpu when writing memory during init

The point of passing down the cpu to core reads/writes is to signal which
cpu is making the access.  For system accesses (such as internal memory
initialization), passing the cpu down doesn't make sense, and in the case
of early init like cris, can cause crashes.  Since the cpu isn't fully set
up at this point, if the core code tries to access some fields (like the
PC reg), it'll crash.  While cris shouldn't be doing this setup here (it
should be in the inferior stage), we'll deal with that later.

8 years agosim: standardize sim_create_inferior handling of argv a bit more
Mike Frysinger [Sat, 26 Dec 2015 12:05:41 +0000 (07:05 -0500)]
sim: standardize sim_create_inferior handling of argv a bit more

For targets that process argv in sim_create_inferior, improve the code:
- provide more details in the comment
- make the check for when to re-init more robust
- clean out legacy sim_copy_argv code

This will be cleaned up more in the future when we have a common inferior
creation function, but at least help new ports get it right until then.

8 years agosim: aarch64: move ChangeLog content
Mike Frysinger [Sat, 26 Dec 2015 12:12:13 +0000 (07:12 -0500)]
sim: aarch64: move ChangeLog content

8 years agoAdd test for ARMv6-M farcall with no profile info
Thomas Preud'homme [Sat, 26 Dec 2015 02:24:58 +0000 (10:24 +0800)]
Add test for ARMv6-M farcall with no profile info

2015-12-24  Thomas Preud'homme  <thomas.preudhomme@arm.com>

ld/testsuite/
    * ld-arm/arm-elf.exp: Run new test "Thumb-Thumb farcall v6-M (no
    profile)".
    * ld-arm/farcall-thumb-thumb-m-no-profile-a.s: New file.
    * ld-arm/farcall-thumb-thumb-m-no-profile-b.s: Likewise.
    * ld-arm/farcall-thumb-thumb-m-no-profile.d: Likewise.

8 years agoAutomatic date update in version.in
GDB Administrator [Sat, 26 Dec 2015 00:00:17 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoDocument that the PATTERN argument to gdb_test is optional.
Sandra Loosemore [Fri, 25 Dec 2015 19:36:52 +0000 (11:36 -0800)]
Document that the PATTERN argument to gdb_test is optional.

2015-12-25  Sandra Loosemore  <sandra@codesourcery.com>

gdb/testsuite/
* lib/gdb.exp (gdb_test): Update comments to clarify that the
PATTERN argument is optional.

8 years agosim: frv: punt WITH_DEVICE support
Mike Frysinger [Fri, 25 Dec 2015 18:19:07 +0000 (13:19 -0500)]
sim: frv: punt WITH_DEVICE support

The frv port used the device logic to support a single cache address,
and the comments around that are "these were merely copied from a diff
port and are unused", plus the code to attach the memory is "#if 0".
Just punt it all.

8 years agosim: m32r: migrate from WITH_DEVICES to WITH_HW
Mike Frysinger [Fri, 25 Dec 2015 18:04:26 +0000 (13:04 -0500)]
sim: m32r: migrate from WITH_DEVICES to WITH_HW

The m32r port was using the device framework to handle two devices: the
cache and uart registers.  Both can be implemented in the newer hardware
framework instead which allows us to drop the device logic entirely, as
well as delete the tconfig.h file.

While creating the new uart device model, I also added support for using
stdin to read/write data rather than only supporting sockets.

This has been lightly tested as there doesn't appear to be test coverage
for the code already.  If anyone still cares about this port, then they
should (hopefully) file bug reports.

8 years agosim: cris: migrate from WITH_DEVICES to WITH_HW
Mike Frysinger [Fri, 25 Dec 2015 11:03:22 +0000 (06:03 -0500)]
sim: cris: migrate from WITH_DEVICES to WITH_HW

The cris port was using the device framework to handle two addresses when
the --cris-900000xx flag was specified.  That can be implemented using the
newer hardware framework instead which allows us to drop the device logic
entirely, as well as delete the tconfig.h file.  Basically we create a new
cris_900000xx device model and move the read logic out of devices.c and
into that.  The rest of the devices logic was callback to the hardware
framework already.

8 years agosim: cris: clean up rvdummy a bit
Mike Frysinger [Fri, 25 Dec 2015 10:54:12 +0000 (05:54 -0500)]
sim: cris: clean up rvdummy a bit

This fixes a few warnings when compiling the rvdummy tool.

8 years agosim: cris: set up sane default path to rvdummy
Mike Frysinger [Fri, 25 Dec 2015 10:51:46 +0000 (05:51 -0500)]
sim: cris: set up sane default path to rvdummy

Much like we autodetect the path to the run program when there is none
set explicitly, do the same for the rvdummy program.  Otherwise the
default make check fails to execute the helper properly.

8 years agosim: hw-properties: delete trace calls
Mike Frysinger [Fri, 25 Dec 2015 10:45:47 +0000 (05:45 -0500)]
sim: hw-properties: delete trace calls

These trace calls don't seem to add anything useful and break the cris
hw tests, so punt them.  They were disabled before commit 6d519a4606b9
but were re-enabled as part of TRACE macro cleanups.

8 years agosim: drop WITH_ENGINE define
Mike Frysinger [Fri, 25 Dec 2015 09:45:57 +0000 (04:45 -0500)]
sim: drop WITH_ENGINE define

We enable this everywhere already, and all new ports should use the
engine logic, so no point in making it an option to disable.

8 years agosim: sim-model: build for everyone
Mike Frysinger [Fri, 25 Dec 2015 09:27:27 +0000 (04:27 -0500)]
sim: sim-model: build for everyone

Rather than include this for some targets, set it up so we can build it
all the time via the common code.  This makes it easier for targets to
opt into it when they're ready, increases build coverage, and allows us
to centralize much of the logic.

We also get to delete tconfig.h from two more targets -- they were
setting WITH_DEVICES to 0 which has the same behavior as not defining
it at all.

While the SIM_HAVE_MODEL knob is gone, we now have WITH_MODEL_P, but it
is only used by the common sim-model code.  We use it to declare dummy
model lists when the arch hasn't created its own.

8 years agosim: move MACH/MODEL types into SIM_xxx namespace
Mike Frysinger [Fri, 25 Dec 2015 09:12:55 +0000 (04:12 -0500)]
sim: move MACH/MODEL types into SIM_xxx namespace

The "MACH" and "MODEL" names are a bit generic and collide with symbols
used by other sections of code (like h8300's opcodes).  Since these are
sim-specific types, they really should have a "SIM_" prefix.

8 years agosim: arm: delete unused code
Mike Frysinger [Mon, 16 Nov 2015 03:45:36 +0000 (19:45 -0800)]
sim: arm: delete unused code

These vestiges of the 20 year old emulator are just getting in the way.
Punt all the dead code we either don't compile or don't use.

8 years agosim: move WITH_SCACHE_PBB to sim-main.h
Mike Frysinger [Fri, 25 Dec 2015 07:34:40 +0000 (02:34 -0500)]
sim: move WITH_SCACHE_PBB to sim-main.h

This helps us break up tconfig.h more.  Any file using this define should
be pulling in sim-main.h already, so things should continue working.

8 years agosim: device_error: punt
Mike Frysinger [Fri, 25 Dec 2015 07:13:18 +0000 (02:13 -0500)]
sim: device_error: punt

Only four targets implement this function, and three of them do nothing.
The 4th merely calls abort.  Since calls to this function are followed
by calls to sim_hw_abort or sim_io_error, this is largely useless.  In
the two places where we don't, replace the call with sim_engine_abort.
We want to kill off the WITH_DEVICES logic in favor of WITH_HW, so this
is a good first step.

8 years agosim: always enable callback memory
Mike Frysinger [Fri, 25 Dec 2015 05:23:50 +0000 (00:23 -0500)]
sim: always enable callback memory

We enable WITH_CALLBACK_MEMORY everywhere and don't provide a way to
turn it off, and no target does so.  Make it unconditional for all
to keep things simple.

8 years agosim: dv-pal: always use CPU_INDEX
Mike Frysinger [Fri, 25 Dec 2015 05:09:48 +0000 (00:09 -0500)]
sim: dv-pal: always use CPU_INDEX

Since the core always provides CPU_INDEX, use it.  The current code
doesn't actually use it even though it should since it doesn't include
the right headers.

8 years agosim: mips: delete TARGET_TX3904 define
Mike Frysinger [Fri, 25 Dec 2015 03:37:11 +0000 (22:37 -0500)]
sim: mips: delete TARGET_TX3904 define

With the LMA cleanup, we no longer need this define.

8 years agosim: mips: move SIM_QUIET_NAN_NEGATED to sim-main.h
Mike Frysinger [Fri, 25 Dec 2015 03:27:04 +0000 (22:27 -0500)]
sim: mips: move SIM_QUIET_NAN_NEGATED to sim-main.h

We want to kill off tconfig.h, so move the one define mips still uses
to sim-main.h.

8 years agosim: make LMA loading the default for all targets
Mike Frysinger [Fri, 25 Dec 2015 02:36:09 +0000 (21:36 -0500)]
sim: make LMA loading the default for all targets

Most targets already default to loading code via their LMA, but for
a few, this means the default changes from loading VMA to LMA.  It's
better to have the different targets be consistent, and allows some
code clean up.

8 years agosim: cris: move option install to sim_open
Mike Frysinger [Thu, 24 Dec 2015 20:49:31 +0000 (15:49 -0500)]
sim: cris: move option install to sim_open

We've moved custom option install for other targets to sim_open, so update
cris too.  It's the last one using MODULE_LIST, so we can drop that from
the common code too.

8 years agosim: delete old breakpoint code
Mike Frysinger [Thu, 24 Dec 2015 22:37:01 +0000 (17:37 -0500)]
sim: delete old breakpoint code

This code relies on the old sim-break module, but that was deleted in 2003.
The module only existed for gdb to tell the sim to set breakpoints on its
behalf, but then that logic was abandoned in favor of gdb knowing all about
proper breakpoints (since it does already for non-sim targets).  Some dead
code lived on in the older ports though -- clean it up now.

8 years agosim: h8300: move h8300-specific options out of common code
Mike Frysinger [Thu, 24 Dec 2015 22:26:54 +0000 (17:26 -0500)]
sim: h8300: move h8300-specific options out of common code

Register the options in sim_open like other arches to avoid having to hack
up the common modules.

8 years agosim: enable watchpoint module everywhere
Mike Frysinger [Thu, 24 Dec 2015 22:01:21 +0000 (17:01 -0500)]
sim: enable watchpoint module everywhere

We build & bundle the watchpoint module everywhere, but we don't make
the command line flags available by default.  A few targets opted in,
but most did not.  Just enable the flag for everyone.  Not all targets
will respect the flags (making them nops), but shouldn't be a big deal.
This is how we handle other common modules already.

8 years agosim: delete SIM_HAVE_FLATMEM support
Mike Frysinger [Thu, 24 Dec 2015 21:41:55 +0000 (16:41 -0500)]
sim: delete SIM_HAVE_FLATMEM support

No target has used this, and it's a cheap hack in place in using the
common memory module.  We want everyone using that though, so drop
support for flatmem entirely.

8 years agosim: delete SIM_HAVE_MEM_SIZE
Mike Frysinger [Thu, 24 Dec 2015 21:38:37 +0000 (16:38 -0500)]
sim: delete SIM_HAVE_MEM_SIZE

This define isn't used anywhere (doesn't seem to ever have been used by
versions committed), so delete the commented out code as it's dead.

8 years agosim: delete SIM_HAVE_SIMCACHE
Mike Frysinger [Thu, 24 Dec 2015 21:04:26 +0000 (16:04 -0500)]
sim: delete SIM_HAVE_SIMCACHE

This was used by the old run interface, but we punted that awhile ago,
so drop this define too.

8 years agoAutomatic date update in version.in
GDB Administrator [Fri, 25 Dec 2015 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoAdd support for linking ARMv8-M object files
Thomas Preud'homme [Thu, 24 Dec 2015 09:33:17 +0000 (17:33 +0800)]
Add support for linking ARMv8-M object files

2015-12-24  Thomas Preud'homme  <thomas.preudhomme@arm.com>

bfd/
    * elf32-arm.c (using_thumb_only): Check that profile is 'M' and update
    logic around Tag_CPU_arch values to return TRUE for ARMv8-M
    architectures.
    (tag_cpu_arch_combine): Define v8m_baseline and v8m_mainline and update
    v4t_plus_v6_m and comb to deal with ARMv8-M Tag_CPU_arch merging logic.
    (elf32_arm_merge_eabi_attributes): Add Tag_CPU_name values for
    ARMv8-M.

bfd/testsuite/
    * ld-arm/arm-elf.exp (armeabitests_common): Run new tests
    "Thumb-Thumb farcall v8-M", "EABI attribute merging 8",
    "EABI attribute merging 9" and "EABI attribute merging 10".
    (Thumb-Thumb farcall v8-M): Renamed to ...
    (Thumb-Thumb farcall v8-M Mainline): This.
    (Thumb-Thumb farcall v8-M Baseline): New test.
    * ld-arm/attr-merge-8a.s: New file.
    * ld-arm/attr-merge-8b.s: Likewise.
    * ld-arm/attr-merge-8.attr: Likewise.
    * ld-arm/attr-merge-9a.s: Likewise.
    * ld-arm/attr-merge-9b.s: Likewise.
    * ld-arm/attr-merge-9.out: Likewise.
    * ld-arm/attr-merge-10a.s: Likewise.
    * ld-arm/attr-merge-10b.s: Likewise.
    * ld-arm/attr-merge-10.attr: Likewise.

8 years agoAdd assembler support for ARMv8-M Baseline
Thomas Preud'homme [Thu, 24 Dec 2015 09:26:08 +0000 (17:26 +0800)]
Add assembler support for ARMv8-M Baseline

2015-12-24  Thomas Preud'homme  <thomas.preudhomme@arm.com>

bfd/
    (tag_cpu_arch_combine): Adjust comment in v4t_plus_v6_m with regards
    to merging with ARMv8-M Baseline.

binutils/
    * readelf.c (arm_attr_tag_CPU_arch): Add ARMv8-M Baseline Tag_CPU_arch
    value.

gas/
    * config/tc-arm.c (arm_ext_v6t2_v8m): New feature for instructions
    shared between ARMv6T2 and ARMv8-M.
    (move_or_literal_pool): Check mov.w/mvn and movw availability against
    arm_ext_v6t2 and arm_ext_v6t2_v8m respectively instead of checking
    arm_arch_t2.
    (do_t_branch): Error out for wide conditional branch instructions if
    targetting ARMv8-M Baseline.
    (non_v6t2_wide_only_insn): Add the logic for new wide-only instructions
    in ARMv8-M Baseline.
    (wide_insn_ok): New function.
    (md_assemble): Use wide_insn_ok instead of non_v6t2_wide_only_insn and
    adapt error message for unsupported wide instruction to ARMv8-M
    Baseline.
    (insns): Reorganize instructions shared by ARMv8-M Baseline and
    ARMv6t2 architecture.
    (arm_cpus): Set feature bit ARM_EXT2_V6T2_V8M for marvell-pj4 and
    marvell-whitney cores.
    (arm_archs): Define armv8-m.base architecture.
    (cpu_arch_ver): Define ARM_ARCH_V8M_BASE architecture version.
    (aeabi_set_public_attributes): Add logic to set Tag_CPU_arch to 17 for
    ARMv8-M Mainline.  Set Tag_DIV_use for ARMv8-M Baseline as well.

gas/testsuite/
    * gas/arm/archv8m-base.d: New file.
    * gas/arm/attr-march-armv8m.base.d: Likewise.
    * gas/arm/armv8m.base-idiv.d: Likewise.
    * gas/arm/any-armv8m.d: Adapt to deal with ARMv8-M Baseline.

include/elf/
    * arm.h (TAG_CPU_ARCH_V8M_BASE): Declare.

include/opcode/
    * arm.h (ARM_EXT2_V6T2_V8M): New extension bit.
    (ARM_AEXT2_V8A): New architecture extension bitfield.
    (ARM_AEXT2_V8_1A): Use ARM_AEXT2_V8A instead of ARM_EXT2_ATOMICS.
    (ARM_AEXT_V8M_BASE): New architecture extension bitfield.
    (ARM_AEXT2_V8M): Add extension bit ARM_EXT2_V6T2_V8M.
    (ARM_ARCH_V6T2): Use ARM_EXT2_V6T2_V8M for the second extension
    bitfield.
    (ARM_ARCH_V6KT2): Likewise.
    (ARM_ARCH_V6ZT2): Likewise.
    (ARM_ARCH_V6KZT2): Likewise.
    (ARM_ARCH_V7): Likewise.
    (ARM_ARCH_V7A): Likewise.
    (ARM_ARCH_V7VE): Likewise.
    (ARM_ARCH_V7R): Likewise.
    (ARM_ARCH_V7M): Likewise.
    (ARM_ARCH_V7EM): Likewise.
    (ARM_ARCH_V8A): Likewise.
    (ARM_ARCH_V8M_BASE): New architecture bitfield.
    (ARM_ARCH_THUMB2): Include instructions shared by ARMv6t2 and ARMv8-M.
    (ARM_ARCH_V7A_SEC): Use ARM_EXT2_V6T2_V8M for the second extension
    bitfield and reindent.
    (ARM_ARCH_V7A_MP_SEC): Likewise.
    (ARM_ARCH_V7R_IDIV): Likewise.
    (ARM_ARCH_V8A_FP): Use ARM_AEXT2_V8A instead of ARM_EXT2_ATOMICS.
    (ARM_ARCH_V8A_SIMD): Likewise.
    (ARM_ARCH_V8A_CRYPTOV1): Likewise.

opcodes/
    * arm-dis.c (arm_opcodes): Guard movw, movt cbz, cbnz, clrex, ldrex,
    ldrexb, ldrexh, strex, strexb, strexh shared by ARMv6T2 and ARMv8-M by
    ARM_EXT2_V6T2_V8M instead of ARM_EXT_V6T2.

8 years agoAdd assembler support for ARMv8-M Mainline
Thomas Preud'homme [Thu, 24 Dec 2015 09:16:19 +0000 (17:16 +0800)]
Add assembler support for ARMv8-M Mainline

2015-12-24  Thomas Preud'homme  <thomas.preudhomme@arm.com>

bfd/
    (tag_cpu_arch_combine): Adjust v4t_plus_v6_m and comb array to account
    for new TAG_CPU_ARCH_V4T_PLUS_V6_M value.  Deal with NULL values in
    comb array.

binutils/
    * readelf.c (arm_attr_tag_CPU_arch): Add ARMv8-M Mainline Tag_CPU_arch
    value.
    (arm_attr_tag_THUMB_ISA_use): Add ARMv8-M Mainline Tag_THUMB_ISA_use
    value.

gas/
    * config/tc-arm.c (arm_ext_m): Include ARMv8-M.
    (arm_ext_v8m): New feature for ARMv8-M.
    (arm_ext_atomics): New feature for ARMv8 atomics.
    (do_tt): New encoding function for TT* instructions.
    (insns): Add new entries for ARMv8-M specific instructions and
    reorganize the ones shared by ARMv8-M Mainline and ARMv8-A.
    (arm_archs): Define armv8-m.main architecture.
    (cpu_arch_ver): Define ARM_ARCH_V8M_MAIN architecture version and
    clarify the ordering rule.
    (aeabi_set_public_attributes): Use TAG_CPU_ARCH_* macro to refer to
    Tag_CPU_arch values for ARMv7e-M detection.  Add logic to keep setting
    Tag_CPU_arch to ARMv8-A for -march=all.  Also set Tag_CPU_arch_profile
    to 'A' if extension bit for atomic instructions is set, unless it is
    ARMv8-M.  Set Tag_THUMB_ISA_use to 3 for ARMv8-M.  Set Tag_DIV_use to 0
    for ARMv8-M Mainline.

gas/testsuite/
    * gas/arm/archv8m.s: New file.
    * gas/arm/archv8m-main.d: Likewise.
    * gas/arm/attr-march-armv8m.main.d: Likewise.
    * gas/arm/any-armv8m.s: Likewise.
    * gas/arm/any-armv8m.d: Likewise.

include/elf/
    * arm.h (TAG_CPU_ARCH_V8M_MAIN): Declare.
    (MAX_TAG_CPU_ARCH): Define to TAG_CPU_ARCH_V8M_MAIN.
    (TAG_CPU_ARCH_V4T_PLUS_V6_M): Define to unused value 15.

include/opcode/
    * arm.h (ARM_EXT2_ATOMICS): New extension bit.
    (ARM_EXT2_V8M): Likewise.
    (ARM_EXT_V8): Adjust comment with regards to atomics and remove
    mention of legacy use for that bit.
    (ARM_AEXT2_V8_1A): New architecture extension bitfield.
    (ARM_AEXT2_V8_2A): Likewise.
    (ARM_AEXT_V8M_MAIN): Likewise.
    (ARM_AEXT2_V8M): Likewise.
    (ARM_ARCH_V8A): Use ARM_EXT2_ATOMICS for features in second bitfield.
    (ARM_ARCH_V8_1A): Likewise with ARM_AEXT2_V8_1A.
    (ARM_ARCH_V8_2A): Likewise with ARM_AEXT2_V8_2A.
    (ARM_ARCH_V8M_MAIN): New architecture feature bitfield.
    (ARM_ARCH_V8A_FP): Use ARM_EXT2_ATOMICS for features in second bitfield
    and reindent.
    (ARM_ARCH_V8A_SIMD): Likewise.
    (ARM_ARCH_V8A_CRYPTOV1): Likewise.
    (ARM_ARCH_V8_1A_FP): Use ARM_AEXT2_V8_1A to set second bitfield of
    feature bits.
    (ARM_ARCH_V8_1A_SIMD): Likewise.
    (ARM_ARCH_V8_1A_CRYPTOV1): Likewise.

opcodes/
    * arm-dis.c (arm_opcodes): Guard lda, ldab, ldaex, ldaexb, ldaexh, stl,
    stlb, stlh, stlex, stlexb and stlexh by ARM_EXT2_ATOMICS instead of
    ARM_EXT_V8.
    (thumb32_opcodes): Add entries for wide ARMv8-M instructions.

8 years agoConsolidate Thumb-1/Thumb-2 ISA detection
Thomas Preud'homme [Thu, 24 Dec 2015 09:01:42 +0000 (17:01 +0800)]
Consolidate Thumb-1/Thumb-2 ISA detection

2015-12-24  Thomas Preud'homme  <thomas.preudhomme@arm.com>

gas/
    * config/tc-arm.c (move_or_literal_pool): Check mov.w, mvm and movw
    availability against arm_ext_v6t2 instead of checking arm_arch_t2,
    fixing comments along the way.
    (handle_it_state): Check arm_ext_v6t2 instead of arm_arch_t2 to
    generate IT instruction.
    (t1_isa_t32_only_insn): New function.
    (md_assemble): Use above new function to check for invalid wide
    instruction for CPU Thumb ISA and to determine what Thumb extension
    bit is necessary for that instruction.
    (md_apply_fix): Use arm_ext_v6t2 instead of arm_arch_t2 to decide if
    branch is out of range.

include/opcode/
    * arm.h (ARM_ARCH_THUMB2): Add comment explaining its meaning and
    remove extension bit not including any Thumb-2 instruction.

8 years agoAdd tests for gas arch autodetection on ARM
Thomas Preud'homme [Thu, 24 Dec 2015 08:50:26 +0000 (16:50 +0800)]
Add tests for gas arch autodetection on ARM

2015-12-09  Andre Vieira  <andre.simoesdiasvieira@arm.com>

gas/testsuite/
    * gas/arm/automatic-bw.d: New.
    * gas/arm/automatic-bw.s: New.
    * gas/arm/automatic-cbz.d: New.
    * gas/arm/automatic-cbz.s: New.
    * gas/arm/automatic-clrex.d: New.
    * gas/arm/automatic-clrex.s: New.
    * gas/arm/automatic-lda.d: New.
    * gas/arm/automatic-lda.s: New.
    * gas/arm/automatic-ldaex.d: New.
    * gas/arm/automatic-ldaex.s: New.
    * gas/arm/automatic-ldaexb.d: New.
    * gas/arm/automatic-ldaexb.s: New.
    * gas/arm/automatic-ldrex.d: New.
    * gas/arm/automatic-ldrex.s: New.
    * gas/arm/automatic-ldrexd.d: New.
    * gas/arm/automatic-ldrexd.s: New.
    * gas/arm/automatic-movw.d: New.
    * gas/arm/automatic-movw.s: New.
    * gas/arm/automatic-sdiv.d: New.
    * gas/arm/automatic-sdiv.s: New.
    * gas/arm/automatic-strexb.d: New.
    * gas/arm/automatic-strexb.s: New.

8 years ago[testsuite/Ada] stop using project files when building test programs
Joel Brobecker [Tue, 22 Dec 2015 09:28:41 +0000 (13:28 +0400)]
[testsuite/Ada] stop using project files when building test programs

The current approach when building Ada programs for testing is
based on the use of a project file (testsuite/gdb.ada/gnat_ada.gpr).
To do that, we pass a number of additional arguments to target_compile,
one of them being the project file (via "-P/path/to/gnat_ada.gpr").
This used to work well-enough, but AdaCore is currently working towards
removing project-file support from gnatmake (the prefered tool for
using project files is gprbuild). So, we need to either switch
the compilation to gprbuild, or stop using project files.

First, using gprbuild is not always what users will be using to
build their applications. So having the option of using gnatmake
provides more flexibility towards exactly reproducing past bugs.
If we ever need a testcase that requires the use of gprbuild, then
I believe support for a new target needs to be added to dejagnu's
target_compile.

Also, the only real reason behind using a project file in the first
place is that we wanted to make it easy to specify the directory
where all compilation artifacts get stored. This is a consequence
of the organization choice we made for gdb.ada to keep each testcase
well organized. It is very easy to achieve that goal without using
project files.

This is therefore what this patch does: It change gdb_compile_ada
to build any program using gnatmake without using a project file
(by temporarily changing the current working directory).

There is a small (beneficial) side-effect; in the situation where
GDB is built in-tree, gnatmake is called as...

        % gnatmake [...] unit.adb

... which means that the debugging info in unit.o will say contain
a filename whose name is 'unit.adb', rather than '/path/to/unit.adb'.
This also better matches what users might typically do. But the side-
effect is that the unit name in the GDB output is not always a full
path. This patch tweaks a couple of testcases to make the path part
optional.

gdb/testsuite:

        * lib/ada.exp (target_compile_ada_from_dir): New function.
        (gdb_compile_ada): Reimplement avoiding the use of project files.
        * gdb.ada/gnat_ada.gpr: Delete.
        * gdb.ada/cond_lang.exp: Adjust test to make path before
        filename optional.
        * gdb.ada/small_reg_param.exp: Likewise.

Tested on x86_64-linux, with both in-tree and out-of-tree builds.

8 years agoAutomatic date update in version.in
GDB Administrator [Thu, 24 Dec 2015 00:00:15 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoAutomatic date update in version.in
GDB Administrator [Wed, 23 Dec 2015 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoRemove HP-UX reference in foll-vfork.exp
Simon Marchi [Tue, 22 Dec 2015 15:52:31 +0000 (10:52 -0500)]
Remove HP-UX reference in foll-vfork.exp

One more I just found.

Tested with native, native-gdbserver and native-extended-gdbserver on
Linux.

gdb/testsuite/ChangeLog:

* gdb.base/foll-vork.exp: Remove HP-UX special case.

8 years agoARM: Fix exidx coverage for relocatable builds.
Yury Usishchev [Tue, 22 Dec 2015 15:50:13 +0000 (15:50 +0000)]
ARM: Fix exidx coverage for relocatable builds.

bfd  * elf-bfd.h: Add callback to count additional relocations.
     * elf32-arm.c (_arm_elf_section_data): Add new counter.
     (insert_cantunwind_after): Increment relocations counter.
     (elf32_arm_fix_exidx_coverage): Remove exidx entries and add
     terminating CANTUNWIND entry only in final builds.
     (elf32_arm_add_relocation): New function.
     (elf32_arm_write_section): Add relocations in relocatable builds.
     (elf32_arm_count_additional_relocs): New function.
     (elf_backend_count_additional_relocs): New define.
     * bfd/elflink.c (bfd_elf_final_link): Use callback and adjust size of
     .rel section.
     * bfd/elfxx-target.h (elf_backend_count_additional_relocs): New define.

ld   * emultempl/armelf.em (gld${EMULATION_NAME}_after_allocation): Call
     elf32_arm_fix_exidx_coverage for relocatable builds.

ld/testsuite
     * ld-arm/arm-elf.exp: New test.
     * ld-arm/unwind-rel.d: New file.
     * ld-arm/unwind-rel1.s: New file.
     * ld-arm/unwind-rel2.s: New file.
     * ld-arm/unwind-rel3.s: New file.

8 years ago[lynxos] gdbserver hangs when killing inferior from GDB
Joel Brobecker [Sun, 20 Dec 2015 14:39:40 +0000 (09:39 -0500)]
[lynxos] gdbserver hangs when killing inferior from GDB

With any program under GDBserver control on LynxOS, killing
the program from the debugger (using the "kill" command) causes
GDBserver to properly kill the inferior but GDBserver then hangs.

This change of behavior occured after the following change was
applied:

    commit f0ea042932e6922c90df3fd0001497d287b97677
    Date:   Mon Nov 30 16:05:27 2015 +0000
    Subject: gdbserver: don't exit until GDB disconnects

One of the changes introduced by the commit above is that
process_serial_event no longer calls exit after handling
the vKill packet. Instead, what happens is that we wait
until captured_main finds that we no longer have any inferior
to debug, at which point it throws_quit. This (normal) exception
is then expected to propagate all the way to the exception handle
in function "main", which calls exit.

However, before the exception gets propagated, the cleanups
are first executed, and one of the cleanups in question is
detach_or_kill_for_exit_cleanup, which was put in place by
captured_main. detach_or_kill_for_exit_cleanup is basically
a wrapper around detach_or_kill_for_exit, which iterates
over all inferiors, and kills them all.

In our case, we have only one inferior, which we have already
killed during the handling for the "vKill" packet. Unfortunately,
we did not properly clean our internal data for that inferior up,
and so detach_or_kill_for_exit thinks that we still have one inferior,
and therefore tries to kill it. This results in lynx_kill being
called, doing the following:

    lynx_ptrace (PTRACE_KILL, ptid, 0, 0, 0);
    lynx_wait (ptid, &status, 0);
    the_target->mourn (process);

The hang is caused by the call to lynx_wait, which waits for
an event from a process which does not exist...

This patch fixes the issue by enhancing lynx_mourn to clean
the threads and process list up.

gdb/gdbserver/ChangeLog:

        * lynx-low.c (lynx_delete_thread_callback): New function.
        (lynx_mourn): Properly delete our process and all of its
        threads.  Remove call to clear_inferiors.

8 years agogdbserver crash in gdb/gdbserver/thread.c::thread_search_callback
Joel Brobecker [Sun, 20 Dec 2015 05:49:59 +0000 (00:49 -0500)]
gdbserver crash in gdb/gdbserver/thread.c::thread_search_callback

Connecting GDB to a LynxOS-178 GDBserver causes GDBserver to crash:

    % gdbserver :4444 simple_main
    Process simple_main created; pid = 19
    Listening on port 4444
    Remote debugging from host 205.232.38.10
    Segmentation fault (core dumped)

The crash happens in thread_search_callback where the function
calls the_target->thread_stopped (via the thread_stopped macro)
without verifying whether the callback is NULL or not.

For the record, the regression was introduced by:

    commit a67a9faef0e32886c83611cc7a0ba61e91123063
    Date:   Mon Nov 30 16:05:26 2015 +0000
    Subject: gdbserver:prepare_access_memory: pick another thread

This patch avoids the crash by checking the value of the callback
first, before calling it.

gdb/gdbserver/ChangeLog:

        * target.c (thread_search_callback): Add check that
        the thread_stopped target callback is not NULL before
        calling it.

8 years ago[win32] cannot automatically find executable file [...] warning at GDB startup
Joel Brobecker [Sat, 19 Dec 2015 14:21:01 +0000 (09:21 -0500)]
[win32] cannot automatically find executable file [...] warning at GDB startup

The following change...

    commit 43499ea30db2a866412c86952c7e1d7b158d806f
    Date:   Tue Nov 17 15:17:44 2015 +0000
    Subject: [C++/mingw] windows-nat.c casts

... causes a small regression in GDB, where we get the following
warning at startup:

    % gdb
    C:\[...]\gdb.exe: warning: cannot automatically find executable file or library to read symbols.
    Use "file" or "dll" command to load executable/libraries directly.
    GNU gdb (GDB) 7.10.50.20151218-cvs (with AdaCore local changes)
    [...]
    (gdb)

The warning comes from _initialize_loadable which tries to dynamically
load some symbols from kernel32.dll and psapi.dll, and in particular:

  hm = LoadLibrary ("psapi.dll");
  if (hm)
    {
      GPA (hm, EnumProcessModules);
      GPA (hm, GetModuleInformation);
      GPA (hm, GetModuleFileNameEx);
    }

The problem is that the new GPA macro assumes that the name of
the variable we use to point to the function, and the name of
its associated symbol are the same. This is mostly the case,
except for GetModuleFileNameEx, where the name is provided by
the GetModuleFileNameEx_name macro (defined differently depending
on whether we are on cygwin or not). As a result, the dynamic
resolution for GetModuleFileNameEx returns NULL, and we trip
the following check which leads to the warning:

  if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
    {
      [...]
      warning(_("[...]"));
    }

This patch fixes the problem by calling GetProcAddress directly,
rather than through the GPA macro, but in a way which hopefully
avoids the C++ compilation warning that the previous patch was
trying to get rid of.

gdb/ChangeLog:

* windows-nat.c (_initialize_loadable): Fix computing of
GetModuleFileNameEx.

8 years agoRXv2 support update
Yoshinori Sato [Wed, 16 Dec 2015 16:42:34 +0000 (01:42 +0900)]
RXv2 support update

2015-12-22  Yoshinori Sato <ysato@users.sourceforge.jp>

opcodes/
* rx-decode.opc (movco): Use uniqe id.
(movli): Likewise.
(stnz): Condition fix.
(mvtacgu): Destination fix.
* rx-decode.c: Regenerate.

bfd/
* archures.c: Add bfd_mach_rx_v2.
* bfd-in2.h: Regenerate.
* cpu-rx.c (arch_info_struct): Add v2 information.
* elf32-rx.c (elf32_rx_machine): Add v2 support.

8 years agoAdd support for ARM's NOREAD section flag.
Mickael Guene [Tue, 22 Dec 2015 14:12:35 +0000 (14:12 +0000)]
Add support for ARM's NOREAD section flag.

include/elf
     * arm.h: Add arm SHF_ARM_NOREAD section flag.

bfd  * bfd-in2.h: Regenerate.
     * section.c: Add SEC_ELF_NOREAD.
     * elf32-arm.c (elf32_arm_post_process_headers): Only set
     PF_X attribute if a segment only contains section with
     SHF_ARM_NOREAD flag.
     (elf32_arm_fake_sections): Add SEC_ELF_NOREAD conversion.
     (elf32_arm_section_flags): New function to convert SHF_ARM_NOREAD
     to bfd flag.
     (elf32_arm_lookup_section_flags): New function to allow
     INPUT_SECTION_FLAGS directive with SHF_ARM_NOREAD flag.
     (elf32_arm_special_sections): Add special sections array
     to catch section prefix by '.text.noread' pattern.

ld/testsuite
     * ld-arm/arm-elf.exp: New tests.
     * ld-arm/thumb1-input-section-flag-match.d: New
     * ld-arm/thumb1-input-section-flag-match.s: New
     * ld-arm/thumb1-noread-not-present-mixing-two-section.d: New
     * ld-arm/thumb1-noread-not-present-mixing-two-section.s: New
     * ld-arm/thumb1-noread-present-one-section.d: New
     * ld-arm/thumb1-noread-present-one-section.s: New
     * ld-arm/thumb1-noread-present-two-section.d: New
     * ld-arm/thumb1-noread-present-two-section.s: New

binutils
* readelf.c (get_elf_section_flags): Add support for ARM specific
section flags.

8 years agoAdd an expect for running commands with CLI jump
Thomas Preud'homme [Tue, 22 Dec 2015 02:50:21 +0000 (10:50 +0800)]
Add an expect for running commands with CLI jump

2015-12-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

gdb/testsuite/
    * lib/mi-support.exp (mi_run_cmd_full): Add an expect for the CLI jump
    case.

8 years agoAutomatic date update in version.in
GDB Administrator [Tue, 22 Dec 2015 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoRemove dead code in testsuite
Simon Marchi [Mon, 21 Dec 2015 19:38:51 +0000 (14:38 -0500)]
Remove dead code in testsuite

This patch removes cases from the testsuite that are not posssibly used.  The
messages "Catch of * not yet implemented" were removed here:

https://www.sourceware.org/ml/gdb-patches/2004-01/msg00679.html

I changed the regexp at the same time to match the string more closely.

gdb/testsuite/ChangeLog:

* gdb.base/break.exp: Remove dead code.
* gdb.base/sepdebug.exp: Likewise.

8 years agoRemove HP-UX references fom testsuite
Simon Marchi [Mon, 21 Dec 2015 17:51:54 +0000 (12:51 -0500)]
Remove HP-UX references fom testsuite

This patch removes all special cases for HP-UX, for which support has
been removed earlier, that I found in the testsuite.  Note that the hppa
architecture != HP-UX, since other OSes can run on hppa, so I tried to
leave everything that is not HP-UX specific.

Two complete tests were completely HP-UX specific, so I removed them.

I ran the testsuite on Linux x86-64, native and native-gdbserver, and
noticed no regressions.

gdb/testsuite/ChangeLog:

* gdb.asm/asm-source.exp: Remove HP-UX references.
* gdb.base/annota1.exp: Likewise.
* gdb.base/annota3.exp: Likewise.
* gdb.base/attach.exp: Likewise.
* gdb.base/bigcore.exp: Likewise.
* gdb.base/break.exp: Likewise.
* gdb.base/call-ar-st.exp: Likewise.
* gdb.base/callfuncs.exp: Likewise.
* gdb.base/catch-fork-static.exp: Likewise.
* gdb.base/display.exp: Likewise.
* gdb.base/foll-exec-mode.exp: Likewise.
* gdb.base/foll-exec.exp: Likewise.
* gdb.base/foll-fork.exp: Likewise.
* gdb.base/foll-vfork.exp: Likewise.
* gdb.base/funcargs.exp: Likewise.
* gdb.base/hbreak2.exp: Likewise.
* gdb.base/inferior-died.exp: Likewise.
* gdb.base/interrupt.exp: Likewise.
* gdb.base/multi-forks.exp: Likewise.
* gdb.base/nodebug.exp: Likewise.
* gdb.base/sepdebug.exp: Likewise.
* gdb.base/solib1.c: Likewise.
* gdb.base/step-test.exp: Likewise.
* gdb.mi/non-stop.c: Likewise.
* gdb.mi/pthreads.c: Likewise.
* gdb.multi/bkpt-multi-exec.ex: Likewise.
* gdb.threads/pthreads.c: Likewise.
* gdb.threads/staticthreads.exp: Likewise.
* lib/future.exp: Likewise.
* lib/gdb.exp: Likewise.
* gdb.base/so-indr-cl.c: Remove.
* gdb.base/so-indr-cl.exp: Likewise.
* gdb.base/solib.c: Likewise.
* gdb.base/solib.exp: Likewise.
* gdb.base/solib2.c: Likewise.

8 years agoRemove references to HP CC/aCC compiler from testsuite
Simon Marchi [Mon, 21 Dec 2015 16:23:43 +0000 (11:23 -0500)]
Remove references to HP CC/aCC compiler from testsuite

The HP CC/aCC compiler is exclusive to HP-UX, for which support has been
explicitly removed.  Therefore, It does not make sense to keep tests
for these compilers' quirks.

gdb/testsuite/ChangeLog:

* gdb.base/break.exp: Remove references to HP CC/aCC compilers.
* gdb.base/call-ar-st.exp: Likewise.
* gdb.base/callfuncs.exp: Likewise.
* gdb.base/condbreak.exp: Likewise.
* gdb.base/constvars.exp: Likewise.
* gdb.base/hbreak2.exp: Likewise.
* gdb.base/langs.exp: Likewise.
* gdb.base/list.exp: Likewise.
* gdb.base/long_long.exp: Likewise.
* gdb.base/ptype.exp: Likewise.
* gdb.base/scope.exp: Likewise.
* gdb.base/signals.exp: Likewise.
* gdb.base/so-impl-ld.exp: Likewise.
* gdb.base/varargs.exp: Likewise.
* gdb.base/volatile.exp: Likewise.
* gdb.base/whatis.exp: Likewise.
* gdb.cp/cplusfuncs.exp: Likewise.
* gdb.cp/inherit.exp: Likewise.
* gdb.cp/local.exp: Likewise.
* gdb.cp/member-ptr.exp: Likewise.
* gdb.cp/method.exp: Likewise.
* gdb.cp/overload.exp: Likewise.
* gdb.cp/templates.exp: Likewise.
* gdb.stabs/weird.exp: Likewise.
* lib/compiler.c: Likewise.
* lib/compiler.cc: Likewise.
* lib/cp-support.exp: Likewise.
* lib/gdb.exp: Likewise.

8 years agoUse arm_eabi_breakpoint on aarch32
Yao Qi [Mon, 21 Dec 2015 13:55:45 +0000 (13:55 +0000)]
Use arm_eabi_breakpoint on aarch32

This patch is to get b37a6290 back again, which was removed by
d9311bfa by mistake.

gdb/gdbserver:

2015-12-21  Yao Qi  <yao.qi@linaro.org>

* linux-aarch32-low.h [__aarch64__]: Use arm_abi_breakpoint
arm breakpoint.

8 years agoFix building pdfs of assembler documentation.
Nick Clifton [Mon, 21 Dec 2015 12:00:04 +0000 (12:00 +0000)]
Fix building pdfs of assembler documentation.

PR gas/19386
* doc/as.texinfo (Strings): Prepend a space to index entries that
start with a backslash.  This works around a problem in the pdf
generator.

8 years agoMinor reformatting fix in gdbtypes.c::create_array_type_with_stride
Joel Brobecker [Mon, 21 Dec 2015 02:51:50 +0000 (06:51 +0400)]
Minor reformatting fix in gdbtypes.c::create_array_type_with_stride

gdb/ChangeLog:

        * gdbtypes.c (create_array_type_with_stride): Fix indentation.

8 years agoAutomatic date update in version.in
GDB Administrator [Mon, 21 Dec 2015 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoRemove HP-UX reference in testsuite/configure.ac
Simon Marchi [Sun, 20 Dec 2015 14:59:02 +0000 (09:59 -0500)]
Remove HP-UX reference in testsuite/configure.ac

gdb/testsuite/ChangeLog:

* configure.ac: Remove HP-UX case.
* configure: Regenerate.

8 years agoAutomatic date update in version.in
GDB Administrator [Sun, 20 Dec 2015 00:00:19 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoFix ARI warning in gdb/arch/arm-get-next-pcs.c
Joel Brobecker [Sat, 19 Dec 2015 03:28:41 +0000 (07:28 +0400)]
Fix ARI warning in gdb/arch/arm-get-next-pcs.c

gdb/ChangeLog:

        * arch/arm-get-next-pcs.c (arm_get_next_pcs_raw): Remove trailing
        newline at end of error message.

8 years agoReset pagination counts even when stdin is not a tty.
Sandra Loosemore [Sat, 19 Dec 2015 01:55:26 +0000 (17:55 -0800)]
Reset pagination counts even when stdin is not a tty.

2015-12-18  Sandra Loosemore  <sandra@codesourcery.com>

gdb/
* event-top.c (command_handler): Don't require stdin to be a tty
for call to reinitialize_more_filter.
* top.c (command_loop): Likewise.

8 years agoMake prompt_for_continue call throw_quit directly.
Sandra Loosemore [Sat, 19 Dec 2015 01:53:11 +0000 (17:53 -0800)]
Make prompt_for_continue call throw_quit directly.

2015-12-18  Sandra Loosemore  <sandra@codesourcery.com>

gdb/
* utils.c (prompt_for_continue): Call throw_quit directly on 'q'.

8 years agoAutomatic date update in version.in
GDB Administrator [Sat, 19 Dec 2015 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoProcess 64-bit imm/disp only for 64-bit BFD
H.J. Lu [Fri, 18 Dec 2015 22:03:43 +0000 (14:03 -0800)]
Process 64-bit imm/disp only for 64-bit BFD

We only need to store 32-bit immediate in 64-bit and optimize 64-bit
displacement to 32-bit only for 64-bit BFD.

* config/tc-i386.c (optimize_imm): Store 32-bit immediate in
64-bit only for 64-bit BFD
(optimize_disp): Optimize 64-bit displacement to 32-bit only
for 64-bit BFD.

8 years agoCast to enum bfd_endian in arm_get_next_pcs_read_memory_unsigned_integer
Antoine Tremblay [Fri, 18 Dec 2015 20:23:58 +0000 (15:23 -0500)]
Cast to enum bfd_endian in arm_get_next_pcs_read_memory_unsigned_integer

This patch fixes the cxx build broken by commit : d9311bfaf572cf14af577a66e79c51c491553552.

Pushed as obvious.

gdb/ChangeLog:

* arm-tdep.c (arm_get_next_pcs_read_memory_unsigned_integer): Cast
to enum bfd_endian)

8 years agoAdd documentation to gdb_compile
Simon Marchi [Fri, 18 Dec 2015 18:39:26 +0000 (13:39 -0500)]
Add documentation to gdb_compile

This patch adds some documentation to gdb_compile.  It describes the
various options that can influence compilation.  Most of them are
handled by DejaGnu, but are not really documented anywhere, so I think
it's good to have a quick reference.  Not all possible options are
described, that would add way to much noise.  I chose those that I think
are relevant in the context of writing a test case.

gdb/testsuite/ChangeLog:

* lib/gdb.exp (gdb_compile): Add function doc.

8 years agoEnable conditional breakpoints for targets that support software single step in GDBServer
Antoine Tremblay [Fri, 18 Dec 2015 16:33:59 +0000 (11:33 -0500)]
Enable conditional breakpoints for targets that support software single step in GDBServer

This patch enables support for conditional breakpoints if the target supports
software single step.

This was disabled before as the implementations of software single step were too
simple as discussed in
https://sourceware.org/ml/gdb-patches/2015-04/msg01110.html.

Since these issues are now fixed support can be added back.

New tests passing :
PASS: gdb.base/cond-eval-mode.exp: set breakpoint condition-evaluation
target and related...

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

gdb/gdbserver/ChangeLog:

* server.c (handle_query): Call target_supports_software_single_step.

8 years agoEnable software single stepping for while-stepping actions in GDBServer
Antoine Tremblay [Fri, 18 Dec 2015 16:33:59 +0000 (11:33 -0500)]
Enable software single stepping for while-stepping actions in GDBServer

This patch enables software single stepping if the targets support it,
to do while-stepping actions.

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

gdb/gdbserver/ChangeLog:

* linux-low.c (single_step): New function.
(linux_resume_one_lwp_throw): Call single_step.
(start_step_over): Likewise.

8 years agoSupport software single step on ARM in GDBServer
Antoine Tremblay [Fri, 18 Dec 2015 16:33:59 +0000 (11:33 -0500)]
Support software single step on ARM in GDBServer

This patch teaches GDBServer how to software single step on ARM
linux by sharing code with GDB.

The arm_get_next_pcs function in GDB is now shared with GDBServer.  So
that GDBServer can use the function to return the possible addresses of
the next PC.

A proper shared context was also needed so that we could share the code,
this context is described in the arm_get_next_pcs structure.

Testing :

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

gdb/ChangeLog:

* Makefile.in (ALL_TARGET_OBS): Append arm-get-next-pcs.o,
arm-linux.o.
(ALLDEPFILES): Append arm-get-next-pcs.c, arm-linux.c
(arm-linux.o): New rule.
(arm-get-next-pcs.o): New rule.
* arch/arm-get-next-pcs.c: New file.
* arch/arm-get-next-pcs.h: New file.
* arch/arm-linux.h: New file.
* arch/arm-linux.c: New file.
* arm.c: Include common-regcache.c.
(thumb_advance_itstate): Moved from arm-tdep.c.
(arm_instruction_changes_pc): Likewise.
(thumb_instruction_changes_pc): Likewise.
(thumb2_instruction_changes_pc): Likewise.
(shifted_reg_val): Likewise.
* arm.h (submask): Move macro from arm-tdep.h
(bit): Likewise.
(bits): Likewise.
(sbits): Likewise.
(BranchDest): Likewise.
(thumb_advance_itstate): Moved declaration from arm-tdep.h
(arm_instruction_changes_pc): Likewise.
(thumb_instruction_changes_pc): Likewise.
(thumb2_instruction_changes_pc): Likewise.
(shifted_reg_val): Likewise.
* arm-linux-tdep.c: Include arch/arm.h, arch/arm-get-next-pcs.h
arch/arm-linux.h.
(arm_linux_get_next_pcs_ops): New struct.
(ARM_SIGCONTEXT_R0, ARM_UCONTEXT_SIGCONTEXT,
ARM_OLD_RT_SIGFRAME_SIGINFO, ARM_OLD_RT_SIGFRAME_UCONTEXT,
ARM_NEW_RT_SIGFRAME_UCONTEXT, ARM_NEW_SIGFRAME_MAGIC): Move stack
layout defines to arch/arm-linux.h.
(arm_linux_sigreturn_next_pc_offset): Move to arch/arm-linux.c.
(arm_linux_software_single_step): Adjust for arm_get_next_pcs
implementation.
* arm-tdep.c: Include arch/arm-get-next-pcs.h.
(arm_get_next_pcs_ops): New struct.
(submask): Move macro to arm.h.
(bit): Likewise.
(bits): Likewise.
(sbits): Likewise.
(BranchDest): Likewise.
(thumb_instruction_changes_pc): Move to arm.c
(thumb2_instruction_changes_pc): Likewise.
(arm_instruction_changes_pc): Likewise.
(shifted_reg_val): Likewise.
(thumb_advance_itstate): Likewise.
(thumb_get_next_pc_raw): Move to arm-get-next-pcs.c.
(arm_get_next_pc_raw): Likewise.
(arm_get_next_pc): Likewise.
(thumb_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence): Likewise.
(arm_get_next_pcs_read_memory_unsigned_integer): New function.
(arm_get_next_pcs_addr_bits_remove): Likewise.
(arm_get_next_pcs_syscall_next_pc): Likewise.
(arm_get_next_pcs_is_thumb): Likewise.
(arm_software_single_step): Adjust for arm_get_next_pcs
implementation.
* arm-tdep.h: (arm_get_next_pc): Remove declaration.
(arm_get_next_pcs_read_memory_unsigned_integer):
New declaration.
(arm_get_next_pcs_addr_bits_remove): Likewise.
(arm_get_next_pcs_syscall_next_pc): Likewise.
(arm_get_next_pcs_is_thumb): Likewise.
(arm_deal_with_atomic_sequence: Remove declaration.
* common/gdb_vecs.h: Add CORE_ADDR vector definition.
* configure.tgt (aarch64*-*-linux): Add arm-get-next-pcs.o,
arm-linux.o.
(arm*-wince-pe): Add arm-get-next-pcs.o.
(arm*-*-linux*): Add arm-get-next-pcs.o, arm-linux.o,
arm-get-next-pcs.o
(arm*-*-netbsd*,arm*-*-knetbsd*-gnu): Add arm-get-next-pcs.o.
(arm*-*-openbsd*): Likewise.
(arm*-*-symbianelf*): Likewise.
(arm*-*-*): Likewise.
* symtab.h: Move CORE_ADDR vector definition to gdb_vecs.h.

gdb/gdbserver/ChangeLog:

* Makefile.in (SFILES): Append arch/arm-linux.c,
arch/arm-get-next-pcs.c.
(arm-linux.o): New rule.
(arm-get-next-pcs.o): New rule.
* configure.srv (arm*-*-linux*): Add arm-get-next-pcs.o,
arm-linux.o.
* linux-aarch32-low.c (arm_abi_breakpoint): Remove macro.  Moved
to linux-aarch32-low.c.
(arm_eabi_breakpoint, arm_breakpoint): Likewise.
(arm_breakpoint_len, thumb_breakpoint): Likewise.
(thumb_breakpoint_len, thumb2_breakpoint): Likewise.
(thumb2_breakpoint_len): Likewise.
(arm_is_thumb_mode): Make non-static.
* linux-aarch32-low.h (arm_abi_breakpoint): New macro.  Moved
from linux-aarch32-low.c.
(arm_eabi_breakpoint, arm_breakpoint): Likewise.
(arm_breakpoint_len, thumb_breakpoint): Likewise.
(thumb_breakpoint_len, thumb2_breakpoint): Likewise.
(thumb2_breakpoint_len): Likewise.
(arm_is_thumb_mode): New declaration.
* linux-arm-low.c: Include arch/arm-linux.h
aarch/arm-get-next-pcs.h, sys/syscall.h.
(get_next_pcs_ops): New struct.
(get_next_pcs_addr_bits_remove): New function.
(get_next_pcs_is_thumb): New function.
(get_next_pcs_read_memory_unsigned_integer): Likewise.
(arm_sigreturn_next_pc): Likewise.
(get_next_pcs_syscall_next_pc): Likewise.
(arm_gdbserver_get_next_pcs): Likewise.
(struct linux_target_ops) <arm_gdbserver_get_next_pcs>:
Initialize.
* linux-low.h: Move CORE_ADDR vector definition to gdb_vecs.h.
* server.h: Include gdb_vecs.h.

8 years agoShare regcache function regcache_raw_read_unsigned
Antoine Tremblay [Fri, 18 Dec 2015 16:33:59 +0000 (11:33 -0500)]
Share regcache function regcache_raw_read_unsigned

This patch is in preparation for software single step support on ARM in
GDBServer. It adds a new shared function regcache_raw_read_unsigned and
regcache_raw_get_unsigned so that GDB and GDBServer can use the same call
to fetch a raw register into an integer.

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

gdb/ChangeLog:

* Makefile.in (SFILES): Append common/common-regcache.c.
(COMMON_OBS): Append common/common-regcache.o.
(common-regcache.o): New rule.
* common/common-regcache.h (register_status) New enum.
(regcache_raw_read_unsigned): New declaration.
* common/common-regcache.c: New file.
* regcache.h (enum register_status): Move to common-regcache.h.
(regcache_raw_read_unsigned): Likewise.
(regcache_raw_get_unsigned): Likewise.

gdb/gdbserver/ChangeLog:

* Makefile.in (SFILES): Append common/common-regcache.c.
(OBS): Append common-regcache.o.
(common-regcache.o): New rule.
* regcache.c (init_register_cache): Initialize cache to
REG_UNAVAILABLE.
(regcache_raw_read_unsigned): New function.
* regcache.h (REG_UNAVAILABLE, REG_VALID): Replaced by shared
register_status enum.

8 years agoRefactor arm_software_single_step to use regcache
Antoine Tremblay [Fri, 18 Dec 2015 16:33:59 +0000 (11:33 -0500)]
Refactor arm_software_single_step to use regcache

This patch is in preparation for software single step support on ARM in
GDBServer. It refactors arm_*_software_single_step and sub-functions to
use regcache instead of frame to access registers so that the code can be
shared more easily between GDB and GDBServer.

Note also that since the intention is at some point to get rid of frame
completely in that function, memory reads have also been replaced by
read_memory_unsigned_integer rather than get_frame_memory_unsigned.

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

gdb/ChangeLog:

* arm-linux-tdep.c (arm_linux_sigreturn_next_pc_offset): New function.
(arm_linux_sigreturn_next_pc): Likewise.
(arm_linux_syscall_next_pc): Use regcache instead of frame.
(arm_linux_software_single_step): Likewise.
* arm-tdep.c (arm_is_thumb): New function.
(shifted_reg_va): Use regcache instead of frame.
(thumb_get_next_pc_raw): Likewise.
(arm_get_next_pc_raw): Likewise.
(arm_get_next_pc): Likewise.
(thumb_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence): Likewise.
(arm_software_single_step): Likewise.
* arm-tdep.h (struct gdbarch_tdep): Use regcache for syscall_next_pc.
(arm_get_next_pc): Use regcache.
(arm_deal_with_atomic_sequence): Likewise.
(arm_is_thumb): New declaration.
* regcache.c (regcache_raw_get_unsigned): New function.
* regcache.h (regcache_raw_get_unsigned): New function declaration.

8 years agoShare some ARM target dependent code from GDB with GDBServer
Antoine Tremblay [Fri, 18 Dec 2015 16:33:58 +0000 (11:33 -0500)]
Share some ARM target dependent code from GDB with GDBServer

This patch is in preparation for software single stepping support on ARM
it shares some functions and definitions that will be needed.

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

Not tested: wince/bsd build.

gdb/ChangeLog:

* arch/arm.c (bitcount): Move from arm-tdep.c.
(condition_true): Likewise.
* arch/arm.h (Instruction Definitions): Move form arm-tdep.h.
(condition_true): Move defenition from arm-tdep.h.
(bitcount): Likewise.
* arm-tdep.c (condition_true): Move to arch/arm.c.
(bitcount): Likewise.
* arm-tdep.h (Instruction Definitions): Move to arch/arm.h.
* arm-wince-tdep.c: Include arch/arm.h.
* armnbsd-tdep.c: Likewise.

8 years agoReplace breakpoint_reinsert_addr by get_next_pcs operation in GDBServer
Antoine Tremblay [Fri, 18 Dec 2015 16:33:58 +0000 (11:33 -0500)]
Replace breakpoint_reinsert_addr by get_next_pcs operation in GDBServer

This patch in preparation for software single step support on ARM. It refactors
breakpoint_reinsert_addr into get_next_pcs so that multiple location can be
returned.

When software single stepping there can be multiple possible next addresses
because we're stepping over a conditional branch instruction, for example.

The operation get_next_pcs handles that by returning a vector of all the
possible next addresses.

Software breakpoints are installed at each location returned.

No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }

gdb/gdbserver/ChangeLog:

* linux-aarch64-low.c (the_low_targets): Rename
breakpoint_reinsert_addr to get_next_pcs.
* linux-arm-low.c (the_low_targets): Likewise.
* linux-bfin-low.c (the_low_targets): Likewise.
* linux-cris-low.c (the_low_targets): Likewise.
* linux-crisv32-low.c (the_low_targets): Likewise.
* linux-low.c (can_software_single_step): Likewise.
(install_software_single_step_breakpoints): New function.
(start_step_over): Use install_software_single_step_breakpoints.
* linux-low.h: New CORE_ADDR vector.
(struct linux_target_ops) Rename breakpoint_reinsert_addr to
get_next_pcs.
* linux-mips-low.c (the_low_targets): Likewise.
* linux-nios2-low.c (the_low_targets): Likewise.
* linux-sparc-low.c (the_low_targets): Likewise.

8 years agoFix formatting in coff-x86_64.c
H.J. Lu [Fri, 18 Dec 2015 16:15:27 +0000 (08:15 -0800)]
Fix formatting in coff-x86_64.c

* coff-x86_64.c (coff_amd64_reloc): Fix formatting.

8 years agoFix formatting of coff-i386.c
Nick Clifton [Fri, 18 Dec 2015 08:49:02 +0000 (08:49 +0000)]
Fix formatting of coff-i386.c

* coff-i386.c (coff_i386_reloc): Fix formatting.

8 years agoImplement --long-plt flag (ARM only).
Peter Collingbourne [Fri, 18 Dec 2015 00:50:35 +0000 (16:50 -0800)]
Implement --long-plt flag (ARM only).

gold/
    PR gold/18780
    * arm.cc (Target_arm::do_make_data_plt): Choose PLT generator based
    on value of --long-plt flag.
    (Output_data_plt_arm_standard::do_get_plt_entry_size): Moved to
    Output_data_plt_arm_short.
    (Output_data_plt_arm_standard::do_fill_plt_entry): Likewise.
    (Output_data_plt_arm_standard::plt_entry): Likewise.
    (Output_data_plt_arm_standard::do_fill_first_plt_entry): Fix
    variable reference.
    (Output_data_plt_arm_short): New class.
    (Output_data_plt_arm_short::do_fill_plt_entry): Error out on too large
    PLT offsets instead of asserting.
    (Output_data_plt_arm_long): New class.
    * options.h (General_options): Define --long-plt flag.

8 years agoAutomatic date update in version.in
GDB Administrator [Fri, 18 Dec 2015 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoMAINTAINERS: Add myself as MIPS maintainer
Maciej W. Rozycki [Thu, 17 Dec 2015 17:25:42 +0000 (17:25 +0000)]
MAINTAINERS: Add myself as MIPS maintainer

binutils/
* MAINTAINERS: Add myself as MIPS maintainer.

8 years ago[Patch ARM] Fix build attributes for armv8-a in case of assembler files that contain...
Ramana Radhakrishnan [Thu, 17 Dec 2015 16:33:24 +0000 (16:33 +0000)]
[Patch ARM] Fix build attributes for armv8-a in case of assembler files that contain no directives.

Add missing ChangeLog entry.

8 years agoFix PR threads/19354: "info threads" error with multiple inferiors
Pedro Alves [Thu, 17 Dec 2015 14:20:52 +0000 (14:20 +0000)]
Fix PR threads/19354: "info threads" error with multiple inferiors

Note: this applies on top of:
 [PATCH] Remove support for LinuxThreads and vendor 2.4 kernels w/ backported NPTL
 https://sourceware.org/ml/gdb-patches/2015-12/msg00214.html

We try to avoid using libthread_db.so to list threads in the inferior
when debugging live processes, but the code that decides whether to
use it decides incorrectly if you have more than one inferior, and the
current inferior doesn't have execution yet.  The result is visible
as:

 (gdb) add-inferior
 Added inferior 2
 (gdb) inferior 2
 [Switching to inferior 2 [<null>] (<noexec>)]
 (gdb) info inferiors
   Num  Description       Executable
   1    process 15397     /home/pedro/gdb/tests/threads
 * 2    <null>
 (gdb) info threads
 Cannot find new threads: generic error
 (gdb)

Fix this by checking whether each inferior has execution rather than
just the current inferior.

By moving the core updating to linux-nat.c's update_thread_list
implementation, this also ends up fixing the
lwp-last-seen-running-on-core updating in the case we're debugging a
program that uses raw clone rather than pthreads, as linux-thread-db.c
isn't pushed in the target stack in that scenario.

Tested on x86_64 Fedora 20.

gdb/ChangeLog:
2015-12-17  Pedro Alves  <palves@redhat.com>

PR threads/19354
* linux-nat.c (linux_nat_update_thread_list): Update process cores
each lwp was last seen running on here.
* linux-thread-db.c (update_thread_core): Delete.
(thread_db_update_thread_list_td_ta_thr_iter): Rename to ...
(thread_db_update_thread_list): ... this.  Skip inferiors with
execution.  Also call the target beneath.
(thread_db_update_thread_list): Delete.

gdb/testsuite/ChangeLog:
2015-12-17  Pedro Alves  <palves@redhat.com>

PR threads/19354
* gdb.multi/info-threads.exp: New file.

8 years agoRemove support for LinuxThreads and vendor 2.4 kernels w/ backported NPTL
Pedro Alves [Thu, 17 Dec 2015 14:20:51 +0000 (14:20 +0000)]
Remove support for LinuxThreads and vendor 2.4 kernels w/ backported NPTL

Since we now rely on PTRACE_EVENT_CLONE being available (added in
Linux 2.5.46), we're relying on NPTL.

This commit removes the support for older LinuxThreads, as well as the
workarounds for vendor 2.4 kernels with NPTL backported.

 - Rely on tkill being available.

 - Assume gdb doesn't get cancel signals.

 - Remove code that checks the LinuxThreads restart and cancel signals
   in the inferior.

 - Assume that __WALL is available.

 - Assume that non-leader threads report WIFEXITED.

 - Thus, no longer need to send signal 0 to check whether threads are
   still alive.

 - Update comments throughout.

Tested on x86_64 Fedora 20, native and gdbserver.

gdb/ChangeLog:

* configure.ac: Remove tkill checks.
* configure, config.in: Regenerate.
* linux-nat.c: Remove HAVE_TKILL_SYSCALL check.  Update top level
comments.
(linux_nat_post_attach_wait): Remove 'cloned' parameter.  Use
__WALL.
(attach_proc_task_lwp_callback): Don't set the cloned flag.
(linux_nat_attach): Adjust.
(kill_lwp): Remove HAVE_TKILL_SYSCALL check.  No longer fall back
to 'kill'.
(linux_handle_extended_wait): Use __WALL.  Don't set the cloned
flag.
(wait_lwp): Use __WALL.  Update comments.
(running_callback, stop_and_resume_callback): Delete.
(linux_nat_filter_event): Don't stop and resume all lwps. Don't
check if the event LWP has previously exited.
(check_zombie_leaders): Update comments.
(linux_nat_wait_1): Use __WALL.
(kill_wait_callback): Don't handle clone processes separately.
Use __WALL instead.
(linux_thread_alive): Delete.
(linux_nat_thread_alive): Return true as long as the LWP is in the
LWP list.
(linux_nat_update_thread_list): Assume the kernel supports
PTRACE_EVENT_CLONE.
(get_signo): Delete.
(lin_thread_get_thread_signals): Remove LinuxThreads references.
No longer check __pthread_sig_restart / __pthread_sig_cancel in
the inferior.
* linux-nat.h (struct lwp_info) <cloned>: Delete field.
* linux-thread-db.c: Update comments.
(_initialize_thread_db): Remove LinuxThreads references.
* nat/linux-waitpid.c (my_waitpid): No longer emulate __WALL.
Pass down flags unmodified.
* linux-waitpid.h (my_waitpid): Update documentation.

gdb/gdbserver/ChangeLog:

* linux-low.c (linux_kill_one_lwp): Remove references to
LinuxThreads.
(kill_lwp): Remove HAVE_TKILL_SYSCALL check.  No longer fall back
to 'kill'.
(linux_init_signals): Delete.
(initialize_low): Adjust.
* thread-db.c (thread_db_init): Remove LinuxThreads reference.

8 years agoFix one heap buffer overflow in aarch64_push_dummy_call
Yao Qi [Thu, 17 Dec 2015 13:07:54 +0000 (13:07 +0000)]
Fix one heap buffer overflow in aarch64_push_dummy_call

Hi,
AddressSanitizer reports an error like this,

(gdb) PASS: gdb.base/call-ar-st.exp: continue to tbreak9
print print_long_arg_list(a, b, c, d, e, f, *struct1, *struct2, *struct3, *struct4, *flags, *flags_combo, *three_char, *five_char, *int_char_combo, *d1, *d2, *d3, *f1, *f2, *f3)
=================================================================
==6236==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200008eb50 at pc 0x89e432 bp 0x7fffa3df9080 sp 0x7fffa3df9078
READ of size 5 at 0x60200008eb50 thread T0
    #0 0x89e431 in memory_xfer_partial gdb/target.c:1264
    #1 0x89e6c7 in target_xfer_partial gdb/target.c:1320
    #2 0x89f267 in target_write_partial gdb/target.c:1595^M
    #3 0x8a014b in target_write_with_progress gdb/target.c:1889^M
    #4 0x8a0262 in target_write gdb/target.c:1914^M
    #5 0x89ee59 in target_write_memory gdb/target.c:1492^M
    #6 0x9a1c74 in write_memory gdb/corefile.c:393^M
    #7 0x467ea5 in aarch64_push_dummy_call gdb/aarch64-tdep.c:1388

The problem is that an instance of stack_item_t is created to adjust
stack for alignment, the item.len is correct, but item.data is buf,
which is wrong, because item.len can be greater than the length of
buf.  This patch sets item.data to NULL, and only update sp (no
inferior memory writes on stack for this item).

gdb:

2015-12-17  Yao Qi  <yao.qi@linaro.org>

* aarch64-tdep.c (struct stack_item_t): Update comments.
(pass_on_stack): Set item.data to NULL.
(aarch64_push_dummy_call): Call write_memory if si->data
isn't NULL.

8 years ago[Patch ARM] Fix build attributes for armv8-a in case of assembler files that contain...
Ramana Radhakrishnan [Thu, 17 Dec 2015 10:55:54 +0000 (10:55 +0000)]
[Patch ARM] Fix build attributes for armv8-a in case of assembler files that contain no directives.

There is currently a problem in the way in which we produce
build attributes for simple assembler files that have armv8-a
instructions.

In these case we need to generate TAG_ISA_THUMB_Use to be Thumb-2
and set the architecture profile to be 'A' rather than not
setting architecture profile to be 'A' and setting TAG_ISA_THUMB_Use
to be Thumb-1.

This is a pre-requisite for any v8-m patches that have been posted.
arm-none-eabi gas testsuite run. no regressions.

2015-12-17  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

* gas/config/tc-arm.c (aeabi_set_public_attributes): Adjust
TAG_ARCH_profile for armv8-a.
* gas/testsuite/gas/arm/armv8a-automatic-hlt.d: New test.
* gas/testsuite/gas/arm/armv8a-automatic-hlt.s: New test.
* gas/testsuite/gas/arm/armv8a-automatic-lda.d: New test.
* gas/testsuite/gas/arm/armv8a-automatic-lda.s: New test.

8 years agoAdd forgotten ChangeLog updates for 72d98d16ed09584660d0cbb759d90f8dfeef2343:
Christophe Lyon [Thu, 17 Dec 2015 10:10:16 +0000 (11:10 +0100)]
Add forgotten ChangeLog updates for 72d98d16ed09584660d0cbb759d90f8dfeef2343:

2015-12-16  Mickael Guene <mickael.guene@st.com>

bfd/
* bfd-in2.h: Regenerate.
* reloc.c: Add new relocations.
* libbfd.h (bfd_reloc_code_real_names): Add new relocations
display names.
* elf32-arm.c (elf32_arm_howto_table_1): Add HOWTO for new
relocations.
(elf32_arm_reloc_map): Add bfd/arm mapping for new relocations.
(elf32_arm_final_link_relocate): Implement new relocations
resolution.

gas/
* doc/c-arm.texi: Add documentation about new directives
* config/tc-arm.c (group_reloc_table): Add mapping between gas
syntax and new relocations.
(do_t_add_sub): Keep new relocations for add operand.
(do_t_mov_cmp): Keep new relocations for mov operand.
(insns): Use 'shifter operand with possible group relocation'
operand parse code for movs operand.
(md_apply_fix): Implement mov and add encoding when new
relocations on them.
(tc_gen_reloc): Add new relocations.
(arm_fix_adjustable): Since offset has a limited range ([0:255])
we disable adjust_reloc_syms() for new relocations.

gas/testsuite/
* gas/arm/adds-thumb1-reloc-local.d: New
* gas/arm/adds-thumb1-reloc-local.s: New
* gas/arm/movs-thumb1-reloc-local.d: New
* gas/arm/movs-thumb1-reloc-local.s: New

include/
* elf/arm.h: Add new arm relocations.

ld/testsuite/
* ld-arm/arm-elf.exp (armelftests_common): Add new relocations
tests.
* ld-arm/thumb1-adds.d: New
* ld-arm/thumb1-adds.s: New
* ld-arm/thumb1-movs.d: New
* ld-arm/thumb1-movs.s: New

8 years agoPR gold/17473: Fix gold build with system C++ headers that use <ctype.h>.
Roland McGrath [Thu, 17 Dec 2015 00:35:27 +0000 (16:35 -0800)]
PR gold/17473: Fix gold build with system C++ headers that use <ctype.h>.

gold/
PR gold/17473
* binary.cc: Move #include "safe-ctype.h" to be last #include.

8 years agoAutomatic date update in version.in
GDB Administrator [Thu, 17 Dec 2015 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoFix -Wno-unknown-warning support detection
Pedro Alves [Wed, 16 Dec 2015 22:56:48 +0000 (22:56 +0000)]
Fix -Wno-unknown-warning support detection

Ref: https://sourceware.org/ml/gdb/2015-12/msg00024.html

We have code in configure.ac that tries to detect whether the compiler
supports each warning and suppress it if not, but that doesn't work
with "-Wno-" options, because gcc doesn't error out for
-Wno-unknown-warning unless other diagnostics are being produced.

See https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html.

Handle this by checking whether -Wfoo works when we actually want
-Wno-foo.

gdb/ChangeLog:
2015-12-16  Pedro Alves  <palves@redhat.com>

* configure.ac (compiler warning flags): When testing a
-Wno-foo option, check whether -Wfoo works instead.
* configure: Regenerate.

gdb/gdbserver/ChangeLog:
2015-12-16  Pedro Alves  <palves@redhat.com>

* configure.ac (compiler warning flags): When testing a
-Wno-foo option, check whether -Wfoo works instead.
* configure: Regenerate.