Commit graph

83866 commits

Author SHA1 Message Date
Jan Kratochvil
bd49952bd7 Make regcache_cpy_no_passthrough static
regcache_cpy_no_passthrough is no longer used for a standalone call.

gdb/ChangeLog
2015-05-13  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* regcache.c (regcache_cpy_no_passthrough): New declaration.
	(regcache_cpy_no_passthrough): Make it static, add function comment.
	* regcache.h (regcache_dup, regcache_cpy): Reduce/update their comment.
	(regcache_cpy_no_passthrough): Remove declaration.
2015-05-13 20:50:11 +02:00
Jan Kratochvil
46c03469b3 Remove stop_registers
Now stop_registers are no longer used and it can be removed.

I am not much sure what 'proceed_to_finish' really means now so I make a wild
guess while updating comments about it.

gdb/ChangeLog
2015-05-13  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdbthread.h (struct thread_control_state): Update comment for
	proceed_to_finish.
	* infcall.c (run_inferior_call): Update comment about
	proceed_to_finish.
	* infcmd.c (get_return_value): Update comment about stop_registers.
	(finish_forward): Update comment about proceed_to_finish.
	* infrun.c (stop_registers): Remove.
	(clear_proceed_status, normal_stop): Remove stop_registers handling.
	* infrun.h (stop_registers): Remove.
2015-05-13 20:49:45 +02:00
Jan Kratochvil
8a6c403112 infcall: stop_registers -> register_dummy_frame_dtor
With dummy_frame destructors GDB no longer has to use global stop_registers.
dummy_frame's registers can be now stored associated with their specific
dummy_frame.

gdb/ChangeLog
2015-05-13  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* infcall.c (struct dummy_frame_context_saver)
	(dummy_frame_context_saver_data_free, dummy_frame_context_saver_dtor)
	(dummy_frame_context_saver_drop, dummy_frame_context_saver_cleanup)
	(dummy_frame_context_saver_get_regs, dummy_frame_context_saver_setup):
	New.
	(call_function_by_hand_dummy): Move discard_cleanups of
	inf_status_cleanup before dummy_frame_push.  Call
	dummy_frame_context_saver_setup and prepare context_saver_cleanup.
	Use dummy_frame_context_saver_get_regs instead of stop_registers.
	* infcall.h (struct dummy_frame_context_saver)
	(dummy_frame_context_saver_drop, dummy_frame_context_saver_cleanup)
	(dummy_frame_context_saver_get_regs, dummy_frame_context_saver_setup):
	New declarations.
	* infcmd.c: Include infcall.h.
	(get_return_value): Add parameter ctx_saver, use it instead of
	stop_registers.
	(print_return_value): Add parameter ctx_saver, pass it.
	(struct finish_command_continuation_args): Add field ctx_saver.
	(finish_command_continuation): Update print_return_value caller.
	(finish_command_continuation_free_arg): Free also ctx_saver.
	(finish_forward): Call dummy_frame_context_saver_setup.
	* inferior.h (struct dummy_frame_context_saver): New declaration.
	(get_return_value): Add parameter ctx_saver.
	* python/py-finishbreakpoint.c (bpfinishpy_pre_stop_hook): Update
	get_return_value caller.
2015-05-13 20:49:08 +02:00
Jan Kratochvil
109896905b register_dummy_frame_dtor: Permit multiple dtors
Later patch needs two independent destructors for the same dummy_frame.
Therefore the registrar has been extended to an arbitrary number of
destructors.

gdb/ChangeLog
2015-05-13  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* dummy-frame.c (struct dummy_frame_dtor_list): New.
	(struct dummy_frame): Replace dtor and dtor_data by dtor_list.
	(remove_dummy_frame): Process dtor_list.
	(pop_dummy_frame): Process dtor_list.
	(register_dummy_frame_dtor): Maintain dtor_list.
	(find_dummy_frame_dtor): Handle dtor_list.
	* dummy-frame.h (register_dummy_frame_dtor, find_dummy_frame_dtor):
	Update comments.
2015-05-13 20:49:00 +02:00
Jan Kratochvil
5e9705017f Call dummy_frame_dtor_ftype also from remove_dummy_frame
There was now a leak-like bug that if dummy_frame "disappeared" by
remove_dummy_frame then its destructor was not called.  For example in the case
of 'compile code' dummy frames the injected objfile would never get freed after
some inferior longjmp out of the injected code.

gdb/ChangeLog
2015-05-13  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* compile/compile-object-run.c (do_module_cleanup): Add parameter
	registers_valid.
	(compile_object_run): Update do_module_cleanup caller.
	* dummy-frame.c: Include infcall.h.
	(struct dummy_frame): Update dtor comment.
	(remove_dummy_frame): Call dtor.
	(pop_dummy_frame): Update dtor caller.
	* dummy-frame.h (dummy_frame_dtor_ftype): Add parameter
	registers_valid.
2015-05-13 20:47:32 +02:00
Joel Brobecker
1c4eb778a2 Document the GDB 7.9.1 release in gdb/ChangeLog
gdb/ChangeLog:

	GDB 7.9.1 released.
2015-05-13 11:00:23 -07:00
Joel Brobecker
f5f85ab95f gdb/NEWS: Move "Xmethods can now specify a result type" to GDB 7.9.1 section.
As this change was ported to GDB 7.9.1, the NEWS entry is moved to
a newly-created "Changes in GDB 7.9.1" section, matching the NEWS
file which is going to be distributed with the GDB 7.9.1 release.

gdb/ChangeLog:

        * NEWS: Create "Changes in GDB 7.9.1" section.  Move news about
        Xmethods now being able to specify a result type to that new
        section.
2015-05-13 10:33:28 -07:00
John David Anglin
5569a85f45 Disable the configuration of GDB for HPUX targets.
* configure.ac: Disable configuration of GDB for HPUX targets.
	* configure: Regenerate.
2015-05-13 17:32:01 +01:00
Max Filippov
dc58915f3a xtensa: fix gas trampolines regression
Extra condition 'abs (addr - trampaddr) < J_RANGE / 2' for trampoline
selection results in regressions: when relaxable jump is little longer
than J_RANGE so that single trampoline makes two new jumps, one longer
than J_RANGE / 2 and one shorter, correct trampoline cannot be found.

Drop that condition.

2015-05-13  Max Filippov  <jcmvbkbc@gmail.com>
gas/
	* config/tc-xtensa.c (xtensa_relax_frag): Allow trampoline to be
	closer than J_RANGE / 2 to jump frag.

gas/testsuite/
	* gas/xtensa/trampoline.s: Add regression testcase.
2015-05-13 19:25:52 +03:00
Patrick Palka
242cd84c93 Add missing ChangeLog entry for previous commit 2015-05-13 11:58:07 -04:00
Patrick Palka
1e04046d0b Avoid race condition when handling a SIGWINCH signal
The control variable win_resized must be cleared before responding to
it.

Otherwise there is a small window where another SIGWINCH might occur in
between the handling of an earlier SIGWINCH and the clearing of
win_resized, at which point win_resized would be set (again) by the
signal handler.  Shortly thereafter we would clear win_resized even
though we only handled the earlier SIGWINCH but not the latest one.
This chain of events is all avoided if we clear win_resized first.

gdb/ChangeLog:

	* tui/tui-win.c (tui_async_resize_screen): Clear win_resized
	first before resizing the window.
	* tui.c (tui_enable): Likewise.
2015-05-13 11:53:28 -04:00
Jan Kratochvil
558e546967 dummy_frame_dtor_ftype vs. call_function_by_hand_dummy_dtor_ftype cleanup
Both dummy_frame_dtor_ftype and call_function_by_hand_dummy_dtor_ftype
represent the same type, there was some mistake/duplication during check-in.

gdb/ChangeLog
2015-05-08  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* dummy-frame.c (struct dummy_frame): Use proper typedef for dtor.
	* dummy-frame.h (dummy_frame_dtor_ftype): Add its comment.
	* infcall.c (call_function_by_hand_dummy): Use proper typedef for
	dummy_dtor parameter.
	* infcall.h: Include dummy-frame.h.
	(call_function_by_hand_dummy_dtor_ftype): Remove.
	(call_function_by_hand_dummy): Use proper typedef for dummy_dtor
	parameter.
2015-05-13 15:55:09 +02:00
Patrick Palka
ebfd00d210 Fix PR gdb/17820
This patch is a comprehensive fix for PR 17820 which reports that
using "set history size unlimited" inside one's gdbinit file doesn't
really work.

There are three small changes in this patch.  The most important change
this patch makes is to decode the argument of the "size" subcommand
using add_setshow_zuinteger_unlimited_cmd() instead of using
add_setshow_uinteger_cmd().  The new decoder takes an int * and maps
unlimited to -1 whereas the old decoder takes an unsigned int * and maps
unlimited to UINT_MAX.  Using the new decoder simplifies our handling of
unlimited and makes it easier to interface with readline which itself
expects a signed-int history size.

The second change is the factoring of the [stifle|unstifle]_history logic
into a common function which is now used by both init_history() and
set_history_size_command().  This is technically the change that fixes
the PR itself.

Thirdly, this patch initializes history_size_setshow_var to -2 to mean
that the variable has not been set yet.  Now init_history() tests for -2
instead of 0 to determine whether to give the variable a default value.
This means that having "set history size 0" in one's gdbinit file will
actually keep the history size at 0 and not reset it to 256.

gdb/ChangeLog:

	PR gdb/17820
	* top.c (history_size_setshow_var): Change type to signed.
	Initialize to -2.  Update documentation.
	(set_readline_history_size): Define.
	(set_history_size_command): Use it.  Remove logic for handling
	out-of-range sizes.
	(init_history): Use set_readline_history_size().  Test for a
	value of -2 instead of 0 when determining whether to set a
	default history size.
	(init_main): Decode the argument of the "size" command as a
	zuinteger_unlimited.

gdb/testsuite/ChangeLog:

	PR gdb/17820
	* gdb.base/gdbinit-history.exp: New test.
	* gdb.base/gdbinit-history/unlimited/.gdbinit: New file.
	* gdb.base/gdbinit-history/zero/.gdbinit: New file.
2015-05-13 09:26:54 -04:00
H.J. Lu
e69c76f4bf Revert "Add -mno-shared to x86 assembler"
This reverts commit 573cc2e57d.
2015-05-13 04:47:59 -07:00
H.J. Lu
31955f993d Add missing ChangeLog entries for PR binutis/18386 2015-05-13 04:33:45 -07:00
H.J. Lu
aa9f728672 Return ELF_CLASS_BOTH by default
* elfedit.c (elf_class): Return ELF_CLASS_BOTH by default.
2015-05-13 03:57:46 -07:00
Andreas Krebbel
6604eb5f40 MAINTAINERS: Add myself as s390 and s390x maintainer.
binutils/
	* MAINTAINERS: Add myself as s390 and s390x maintainer.
2015-05-13 08:19:45 +02:00
GDB Administrator
5c0bbc5231 Automatic date update in version.in 2015-05-13 00:00:07 +00:00
H.J. Lu
a3747075ae Allocate the first .plt entry space only if needed
Commit dd7e64d45b may optimize out
i386/x86-64 JUMP_SLOT relocation.  If there is no JUMP_SLOT relocation
left, we don't need to the first .plt entry.  This patch allocates
space for the first .plt entry only if we also reserve space for a PLT
slot for JUMP_SLOT relocation.

bfd/

	* elf32-i386.c (elf_i386_allocate_dynrelocs): Allocate space
	for the first .plt entry only if needed.
	* elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewise.

ld/testsuite/

	* ld-i386/i386.exp: Run pltgot-1 for Linux targets.
	* ld-x86-64/x86-64.exp: Likewise.
	* ld-i386/pltgot-1.d: New file.
	* ld-i386/pltgot-1.s: Likewise.
	* ld-x86-64/pltgot-1.d: Likewise.
	* ld-x86-64/pltgot-1.s: Likewise.
2015-05-12 13:11:48 -07:00
H.J. Lu
98624574ea Also skip x86_64-*-nacl*
* binutils-all/elfedit-1.d: Also skip x86_64-*-nacl*.
2015-05-12 12:47:27 -07:00
Doug Evans
83769d0b12 tweak some comments
gdb/ChangeLog:

	* dwarf2read.c (struct file_entry): Tweak comments.
	(get_debug_line_section): Tweak comments.
2015-05-12 10:42:49 -07:00
Don Breazeal
0d71eef55d Extended-remote fork event docs
This patch contains the accumulated documentation changes for the
rest of the extended-remote follow fork patchset.

gdb/ChangeLog:

        * NEWS: Announce fork support in the RSP and support
          for fork debugging in extended mode.

gdb/doc/ChangeLog:

        * gdb.texinfo (Forks): Note that fork debugging is
          supported in extended mode.
          (Remote Configuration): Add fork event features to table
          of packet settings.
          (Stop Reply Packets): Add fork events to list of stop reasons.
          (General Query Packets): Add fork events to tables of
          'gdbfeatures' and 'stub features' supported in the qSupported
          packet, as well as to the list containing stub feature
          details.
2015-05-12 09:52:47 -07:00
Don Breazeal
cbb8991cab Extended-remote fork catch
This patch implements catchpoints for fork events on extended-remote
Linux targets.

Implementation appeared to be straightforward, requiring four new functions
in remote.c to implement insert/remove of fork/vfork catchpoints.  These
functions are essentially stubs that just return 0 ('success') if the
required features are enabled.  If the fork events are being reported, then
catchpoints are set and hit.

However, there are some extra issues that arise with catchpoints.

1) Thread creation reporting -- fork catchpoints are hit before the
   follow_fork has been completed.  When stopped at a fork catchpoint
   in the native implementation, the new process is not 'reported'
   until after the follow is done.  It doesn't show up in the inferiors
   list or the threads list.  However, in the gdbserver case, an
   'info threads' while stopped at a fork catchpoint will retrieve the
   new thread info from the target and add it to GDB's data structures,
   prior to the follow operations.  Because of this premature report,
   things on the GDB side eventually get very confused.

   So in remote.c:remote_update_thread_list, we check to see if there
   are any pending fork parent threads.  If there are we remove the
   related fork child thread from the thread list sent by the target.

2) Kill process before fork is followed -- on the native side in
   linux-nat.c:linux_nat_kill, there is some code to handle the case where
   a fork has occurred but follow_fork hasn't been called yet.  It does
   this by using the last status to determine if a follow is pending, and
   if it is, to kill the child task.  The use of last_status is fragile
   in situations like non-stop mode where other events may have occurred
   after the fork event.  This patch identifies a fork parent
   in remote.c:extended_remote_kill in a way similar to that used in
   thread creation reporting above.  If one is found, it kills the new
   child as well.

Tested on x64 Ubuntu Lucid, native, remote, extended-remote.  Tested the
case of killing the forking process before the fork has been followed
manually.

gdb/ChangeLog:
        * remote.c (remote_insert_fork_catchpoint): New function.
        (remote_remove_fork_catchpoint): New function.
        (remote_insert_vfork_catchpoint): New function.
        (remote_remove_vfork_catchpoint): New function.
        (pending_fork_parent_callback): New function.
        (remove_new_fork_child): New function.
        (remote_update_thread_list): Call remote_notif_get_pending_events
        and remove_new_fork_child.
        (extended_remote_kill): Kill fork child when killing the
        parent before follow_fork completes.
        (init_extended_remote_ops): Initialize target vector with
        new fork catchpoint functions.
2015-05-12 09:52:46 -07:00
Don Breazeal
c269dbdb60 Extended-remote follow vfork
This patch implements follow-fork for vfork on extended-remote Linux targets.

The implementation follows the native implementation as much as possible.
Most of the work is done on the GDB side in the existing code now in
infrun.c.  GDBserver just has to report the events and do a little
bookkeeping.

Implementation includes:

 * enabling VFORK events by adding ptrace options for VFORK and VFORK_DONE
   to linux-low.c:linux_low_ptrace_options.

 * handling VFORK and VFORK_DONE events in linux-low.c:handle_extended_wait
   and reporting them to GDB.

 * including VFORK and VFORK_DONE events in the predicate
   linux-low.c:extended_event_reported.

 * adding support for VFORK and VFORK_DONE events in RSP by adding stop
   reasons "vfork" and "vforkdone" to the 'T' Stop Reply Packet in both
   gdbserver/remote-utils.c and gdb/remote.c.

Tested on x64 Ubuntu Lucid, native, remote, extended-remote.

gdb/gdbserver/ChangeLog:

        * linux-low.c (handle_extended_wait): Handle PTRACE_EVENT_FORK and
        PTRACE_EVENT_VFORK_DONE.
        (linux_low_ptrace_options, extended_event_reported): Add vfork
        events.
        * remote-utils.c (prepare_resume_reply): New stop reasons "vfork"
        and "vforkdone" for RSP 'T' Stop Reply Packet.
        * server.h (report_vfork_events): Declare
        global variable.

gdb/ChangeLog:

        * remote.c (remove_vfork_event_p): New function.
        (remote_follow_fork): Add vfork event type to event checking.
        (remote_parse_stop_reply): New stop reasons "vfork" and
        "vforkdone" for RSP 'T' Stop Reply Packet.
2015-05-12 09:52:45 -07:00
Don Breazeal
3a8a0396be Arch-specific remote follow fork
This patch implements the architecture-specific pieces of follow-fork
for remote and extended-remote Linux targets, which in the current
implementation copyies the parent's debug register state into the new
child's data structures.  This is required for x86, arm, aarch64, and
mips.

This follows the native implementation as closely as possible by
implementing a new linux_target_ops function 'new_fork', which is
analogous to 'linux_nat_new_fork' in linux-nat.c.  In gdbserver, the debug
registers are stored in the process list, instead of an
architecture-specific list, so the function arguments are process_info
pointers instead of an lwp_info and a pid as in the native implementation.

In the MIPS implementation the debug register mirror is stored differently
from x86, ARM, and aarch64, so instead of doing a simple structure assignment
I had to clone the list of watchpoint structures.

Tested using gdb.threads/watchpoint-fork.exp on x86, and ran manual tests
on a MIPS board and an ARM board.  Aarch64 hasn't been tested.

gdb/gdbserver/ChangeLog:

        * linux-aarch64-low.c (aarch64_linux_new_fork): New function.
        (the_low_target) <new_fork>: Initialize new member.
        * linux-arm-low.c (arm_new_fork): New function.
        (the_low_target) <new_fork>: Initialize new member.
        * linux-low.c (handle_extended_wait): Call new target function
        new_fork.
        * linux-low.h (struct linux_target_ops) <new_fork>: New member.
        * linux-mips-low.c (mips_add_watchpoint): New function
        extracted from mips_insert_point.
        (the_low_target) <new_fork>: Initialize new member.
        (mips_linux_new_fork): New function.
        (mips_insert_point): Call mips_add_watchpoint.
        * linux-x86-low.c (x86_linux_new_fork): New function.
        (the_low_target) <new_fork>: Initialize new member.
2015-05-12 09:52:44 -07:00
Don Breazeal
de0d863ec3 Extended-remote Linux follow fork
This patch implements basic support for follow-fork and detach-on-fork on
extended-remote Linux targets.  Only 'fork' is supported in this patch;
'vfork' support is added n a subsequent patch.  This patch depends on
the previous patches in the patch series.

Sufficient extended-remote functionality has been implemented here to pass
gdb.base/multi-forks.exp, as well as gdb.base/foll-fork.exp with the
catchpoint tests commented out.  Some other fork tests fail with this
patch because it doesn't provide the architecture support needed for
watchpoint inheritance or fork catchpoints.

The implementation follows the same general structure as for the native
implementation as much as possible.

This implementation includes:
 * enabling fork events in linux-low.c in initialize_low and
   linux_enable_extended_features

 * handling fork events in gdbserver/linux-low.c:handle_extended_wait

   - when a fork event occurs in gdbserver, we must do the full creation
     of the new process, thread, lwp, and breakpoint lists.  This is
     required whether or not the new child is destined to be
     detached-on-fork, because GDB will make target calls that require all
     the structures.  In particular we need the breakpoint lists in order
     to remove the breakpoints from a detaching child.  If we are not
     detaching the child we will need all these structures anyway.

   - as part of this event handling we store the target_waitstatus in a new
     member of the parent lwp_info structure, 'waitstatus'.  This
     is used to store extended event information for reporting to GDB.

   - handle_extended_wait is given a return value, denoting whether the
     handled event should be reported to GDB.  Previously it had only
     handled clone events, which were never reported.

 * using a new predicate in gdbserver to control handling of the fork event
   (and eventually all extended events) in linux_wait_1.  The predicate,
   extended_event_reported, checks a target_waitstatus.kind for an
   extended ptrace event.

 * implementing a new RSP 'T' Stop Reply Packet stop reason: "fork", in
   gdbserver/remote-utils.c and remote.c.

 * implementing new target and RSP support for target_follow_fork with
   target extended-remote.  (The RSP components were actually defined in
   patch 1, but they see their first use here).

   - remote target routine remote_follow_fork, which just sends the 'D;pid'
     detach packet to detach the new fork child cleanly.  We can't just
     call target_detach because the data structures for the forked child
     have not been allocated on the host side.

Tested on x64 Ubuntu Lucid, native, remote, extended-remote.

gdb/gdbserver/ChangeLog:

        * linux-low.c (handle_extended_wait): Implement return value,
        rename argument 'event_child' to 'event_lwp', handle
        PTRACE_EVENT_FORK, call internal_error for unrecognized event.
        (linux_low_ptrace_options): New function.
        (linux_low_filter_event): Call linux_low_ptrace_options,
        use different argument fo linux_enable_event_reporting,
        use return value from handle_extended_wait.
        (extended_event_reported): New function.
        (linux_wait_1): Call extended_event_reported and set
        status to report fork events.
        (linux_write_memory): Add pid to debug message.
        (reset_lwp_ptrace_options_callback): New function.
        (linux_handle_new_gdb_connection): New function.
        (linux_target_ops): Initialize new structure member.
        * linux-low.h (struct lwp_info) <waitstatus>: New member.
        * lynx-low.c: Initialize new structure member.
        * remote-utils.c (prepare_resume_reply): Implement stop reason
        "fork" for "T" stop message.
        * server.c (handle_query): Call handle_new_gdb_connection.
        * server.h (report_fork_events): Declare global flag.
        * target.h (struct target_ops) <handle_new_gdb_connection>:
        New member.
        (target_handle_new_gdb_connection): New macro.
        * win32-low.c: Initialize new structure member.

gdb/ChangeLog:

        * linux-nat.c (linux_nat_ptrace_options): New function.
        (linux_init_ptrace, wait_lwp, linux_nat_filter_event):
        Call linux_nat_ptrace_options and use different argument to
        linux_enable_event_reporting.
        (_initialize_linux_nat): Delete call to
        linux_ptrace_set_additional_flags.
        * nat/linux-ptrace.c (current_ptrace_options): Rename to
        supported_ptrace_options.
        (additional_flags): Delete variable.
        (linux_check_ptrace_features): Use supported_ptrace_options.
        (linux_test_for_tracesysgood, linux_test_for_tracefork):
        Likewise, and remove additional_flags check.
        (linux_enable_event_reporting): Change 'attached' argument to
        'options'.  Use supported_ptrace_options.
        (ptrace_supports_feature): Change comment.  Use
        supported_ptrace_options.
        (linux_ptrace_set_additional_flags): Delete function.
        * nat/linux-ptrace.h (linux_ptrace_set_additional_flags):
        Delete function prototype.
        * remote.c (remote_fork_event_p): New function.
        (remote_detach_pid): New function.
        (remote_detach_1): Call remote_detach_pid, don't mourn inferior
        if doing detach-on-fork.
        (remote_follow_fork): New function.
        (remote_parse_stop_reply): Handle new "T" stop reason "fork".
        (remote_pid_to_str): Print "process" strings for pid/0/0 ptids.
        (init_extended_remote_ops): Initialize to_follow_fork.
2015-05-12 09:52:43 -07:00
Don Breazeal
ddcbc3975f Clone remote breakpoints
This patch implements gdbserver routines to clone the breakpoint lists of a
process, duplicating them for another process.  In gdbserver, each process
maintains its own independent breakpoint list.  When a fork call creates a
child, all of the breakpoints currently inserted in the parent process are
also inserted in the child process, but there is nothing to describe them
in the data structures related to the child.  The child must have a
breakpoint list describing them so that they can be removed (if detaching)
or recognized (if following).  Implementation is a mechanical process of
just cloning the lists in several new functions in gdbserver/mem-break.c.

Tested by building, since none of the new functions are called yet.  This
was tested with another patch in the series that implements follow-fork.

gdb/gdbserver/ChangeLog:

        * mem-break.c (APPEND_TO_LIST): Define macro.
        (clone_agent_expr): New function.
        (clone_one_breakpoint): New function.
        (clone_all_breakpoints): New function.
        * mem-break.h: Declare new functions.
2015-05-12 09:52:42 -07:00
Don Breazeal
89245bc056 Identify remote fork event support
This patch implements a mechanism for GDB to determine whether fork
events are supported in gdbserver.  This is a preparatory patch for
remote fork and exec event support.

Two new RSP packets are defined to represent fork and vfork event
support.  These packets are used just like PACKET_multiprocess_feature
to denote whether the corresponding event is supported.  GDB sends
fork-events+ and vfork-events+ to gdbserver to inquire about fork
event support.  If the response enables these packets, then GDB
knows that gdbserver supports the corresponding events and will
enable them.

Target functions used to query for support are included along with
each new packet.

In order for gdbserver to know whether the events are supported at the
point where the qSupported packet arrives, the code in nat/linux-ptrace.c
had to be reorganized.  Previously it would test for fork/exec event
support, then enable the events using the pid of the inferior.  When the
qSupported packet arrives there may not be an inferior.  So the mechanism
was split into two parts: a function that checks whether the events are
supported, called when gdbserver starts up, and another that enables the
events when the inferior stops for the first time.

Another gdbserver change was to add some global variables similar to
multi_process, one per new packet.  These are used to control whether
the corresponding fork events are enabled.  If GDB does not inquire
about the event support in the qSupported packet, then gdbserver will
not set these "report the event" flags.  If the flags are not set, the
events are ignored like they were in the past.  Thus, gdbserver will
never send fork event notification to an older GDB that doesn't
recognize fork events.

Tested on Ubuntu x64, native/remote/extended-remote, and as part of
subsequent patches in the series.

gdb/gdbserver/ChangeLog:

        * linux-low.c (linux_supports_fork_events): New function.
        (linux_supports_vfork_events): New function.
        (linux_target_ops): Initialize new structure members.
        (initialize_low): Call linux_check_ptrace_features.
        * lynx-low.c (lynx_target_ops): Initialize new structure
        members.
        * server.c (report_fork_events, report_vfork_events):
        New global flags.
        (handle_query): Add new features to qSupported packet and
        response.
        (captured_main): Initialize new global variables.
        * target.h (struct target_ops) <supports_fork_events>:
        New member.
        <supports_vfork_events>: New member.
        (target_supports_fork_events): New macro.
        (target_supports_vfork_events): New macro.
        * win32-low.c (win32_target_ops): Initialize new structure
        members.

gdb/ChangeLog:

        * nat/linux-ptrace.c (linux_check_ptrace_features): Change
        from static to extern.
        * nat/linux-ptrace.h (linux_check_ptrace_features): Declare.
        * remote.c (anonymous enum): <PACKET_fork_event_feature,
        * PACKET_vfork_event_feature>: New enumeration constants.
        (remote_protocol_features): Add table entries for new packets.
        (remote_query_supported): Add new feature queries to qSupported
        packet.
        (_initialize_remote): Exempt new packets from the requirement
        to have 'set remote' commands.
2015-05-12 09:52:41 -07:00
Jiong Wang
15eddee17f [AArch64] Add R_AARCH64_P32_LD32_GOTPAGE_LO14 to elf header
2015-05-12  Jiong. Wang  <jiong.wang@arm.com>

include/
  * elf/aarch64.h (R_AARCH64_P32_LD32_GOTPAGE_LO14): New enumeration.
2015-05-12 13:47:15 +01:00
Gary Benson
835205d078 Locate executables on remote stubs without multiprocess extensions
This commit allows GDB to determine filenames of main executables
when debugging using remote stubs without multiprocess extensions.
The qXfer:exec-file:read packet is extended to allow an empty
annex, with the meaning that the remote stub should supply the
filename of whatever it thinks is the current process.

gdb/ChangeLog:

	* remote.c (remote_add_inferior): Call exec_file_locate_attach
	for fake PIDs as well as real ones.
	(remote_pid_to_exec_file): Send empty annex if PID is fake.

gdb/doc/ChangeLog:

	* gdb.texinfo (General Query Packets): Document
	qXfer:exec-file:read with empty annex.

gdb/gdbserver/ChangeLog:

	* server.c (handle_qxfer_exec_file): Use current process
	if annex is empty.
2015-05-12 11:57:52 +01:00
Stephen Kitt
5b155b955a Enables the -t abbreviated form of the --temp-prefix command line option for dlltool.
* dlltool.c (main): Accept -t as an abbreviation for
	--temp-prefix.
2015-05-12 11:16:03 +01:00
GDB Administrator
fb4048adf7 Automatic date update in version.in 2015-05-12 00:00:07 +00:00
H.J. Lu
70cead0767 Remove Disp16|Disp32 from 64-bit direct branches
Disp16 and Disp32 aren't supported by direct branches in 64-bit mode.
This patch removes them from 64-bit direct branches.

	* opcodes/i386-opc.tbl (call): Remove Disp16|Disp32 from 64-bit
	direct branch.
	(jmp): Likewise.
	* i386-tbl.h: Regenerated.
2015-05-11 14:20:37 -07:00
H.J. Lu
e83c417475 Allow mixing target and not-target directives
Mixing target and not-target directives can be used to run for x86_64-*-*
target while skipping x86_64-*-gnux32 target.  This patch allows mixing
target and not-target directives. It is used to skip elfedit-1 for
x86_64-*-gnux32.

	* binutils-all/elfedit-1.d: Skip x86_64-*-gnux32.
	* lib/utils-lib.exp (run_dump_test): Allow mixing target and
	not-target directives.
2015-05-11 12:29:27 -07:00
H.J. Lu
5197d47436 Default e_machine to EM_IAMCU for i?86-*-elfiamcu
This patch sets the default ELF output format of assembler and linker to
EM_IAMCU when binutils is configured to i?86-*-elfiamcu target.

gas/

	* configure.tgt (arch): Set to iamcu for i386-*-elfiamcu target.
	* config/tc-i386.c (i386_mach): Support iamcu.
	(i386_target_format): Likewise.

ld/

	* configure.tgt: Support i[3-7]86-*-elfiamcu target.

ld/testsuite/

	* ld-i386/i386.exp (iamcu_tests): Run iamcu-4.
	* ld-i386/iamcu-4.d: New file.
2015-05-11 12:06:33 -07:00
H.J. Lu
7e0a81123d Add Intel MCU support to ld
-m elf_iamcu must be passed to i386 linker to generate Intel MCU binary.

ld/

	* Makefile.am (ALL_EMULATION_SOURCES): Add eelf_iamcu.c.
	(eelf_iamcu.c): New.
	* configure.tgt (targ_extra_emuls): Add elf_iamcu if elf_i386 is
	enabled in BFD.
	* Makefile.in: Regenerated.
	* emulparams/elf_iamcu.sh: New file.

ld/testsuite/

	* ld-i386/abs-iamcu.d: New file.
	* ld-i386/dummy.s: Likewise.
	* ld-i386/foo.s: Likewise.
	* ld-i386/iamcu-1.d: Likewise.
	* ld-i386/iamcu-2.d: Likewise.
	* ld-i386/iamcu-3.d: Likewise.
	* ld-i386/start.s: Likewise.
	* ld-i386/i386.exp (iamcu_tests): New.
	Run iamcu_tests.
2015-05-11 11:29:03 -07:00
H.J. Lu
814860358c Add Intel MCU support to gas
-march=iamcu must be passed to i386 assembler to generate Intel MCU object
file.

gas/

	* config/tc-i386.c (cpu_arch): Add iamcu.
	(i386_align_code): Handle PROCESSOR_IAMCU.
	(i386_arch): Likewise.
	(i386_mach): Likewise.
	(i386_target_format): Likewise.
	(valid_iamcu_cpu_flags): New function.
	(check_cpu_arch_compatible): Only allow Intel MCU instructions
	when targeting Intel MCU.
	(set_cpu_arch): Call valid_iamcu_cpu_flags to check if CPU flags
	are valid for Intel MCU.
	(md_parse_option): Likewise.
	* tc-i386.h (ELF_TARGET_IAMCU_FORMAT): New.
	(processor_type): Add PROCESSOR_IAMCU.
	* doc/c-i386.texi: Document iamcu.

gas/testsuite/

	* gas/i386/i386.exp: Run iamcu-1, iamcu-2, iamcu-3, iamcu-inval-1,
	iamcu-inval-2 and iamcu-inval-3.
	* gas/i386/iamcu-1.d: New file.
	* gas/i386/iamcu-1.s: Likewise.
	* gas/i386/iamcu-2.d: Likewise.
	* gas/i386/iamcu-2.s: Likewise.
	* gas/i386/iamcu-3.d: Likewise.
	* gas/i386/iamcu-3.s: Likewise.
	* gas/i386/iamcu-inval-1.l: Likewise.
	* gas/i386/iamcu-inval-1.s: Likewise.
	* gas/i386/iamcu-inval-2.l: Likewise.
	* gas/i386/iamcu-inval-2.s: Likewise.
	* gas/i386/iamcu-inval-3.l: Likewise.
	* gas/i386/iamcu-inval-3.s: Likewise.
2015-05-11 11:12:39 -07:00
H.J. Lu
7b6d09fbc6 Add Intel MCU support to opcodes
* configure.ac: Support bfd_iamcu_arch.
	* disassemble.c (disassembler): Support bfd_iamcu_arch.
	* i386-gen.c (cpu_flag_init): Add CPU_IAMCU_FLAGS and
	CPU_IAMCU_COMPAT_FLAGS.
	(cpu_flags): Add CpuIAMCU.
	* i386-opc.h (CpuIAMCU): New.
	(i386_cpu_flags): Add cpuiamcu.
	* configure: Regenerated.
	* i386-init.h: Likewise.
	* i386-tbl.h: Likewise.
2015-05-11 10:48:21 -07:00
H.J. Lu
3d875af575 Add init_dwarf_regnames_iamcu
* dwarf.c (dwarf_regnames_iamcu): New.
	(init_dwarf_regnames_iamcu): Likewise.
	(init_dwarf_regnames): Call init_dwarf_regnames_iamcu for EM_IAMCU.
	* dwarf.h (init_dwarf_regnames_iamcu): New.
	* objdump.c (dump_dwarf): Call init_dwarf_regnames_iamcu for
	bfd_arch_iamcu.
2015-05-11 10:41:44 -07:00
H.J. Lu
bf64a9511f Add Intel MCU support to bfd
bfd/

	* Makefile.am (ALL_MACHINES): Add cpu-iamcu.lo.
	(ALL_MACHINES_CFILES): Likewise.
	* archures.c (bfd_mach_iamcu): New.
	(bfd_mach_i386_iamcu): Likewise.
	(bfd_mach_i386_iamcu_intel_syntax): Likewise.
	(bfd_iamcu_arch): Likewise.
	(bfd_archures_list): Add &bfd_iamcu_arch.
	* config.bfd (targ_selvecs): Add iamcu_elf32_vec to
	i386_elf32_vec.
	(targ_archs): Add bfd_iamcu_arch if needed.
	* configure.ac: Support iamcu_elf32_vec.
	* cpu-iamcu.c: New file.
	* elf32-i386.c (elf32_iamcu_elf_object_p): New function.
	Add support for iamcu_elf32_vec and elf32_iamcu_bed.
	* targets.c (iamcu_elf32_vec): New.
	(_bfd_target_vector): Add iamcu_elf32_vec.
	* Makefile.in: Regenerated.
	* bfd-in2.h: Likewise.
	* configure: Likewise.

binutils/testsuite/

	* binutils-all/objdump.exp (cpus_expected): Append iamcu.
2015-05-11 10:31:00 -07:00
H.J. Lu
6c14750f48 Add EM_386/EM_IAMCU support to elfedit.c
binutils/

	* elfedit.c (enum elfclass): New.
	(input_elf_class): Change type to enum elfclass.
	(output_elf_class): New.
	(elf_class): Change return type to enum elfclass.  Support EM_386
	and EM_IAMCU.
	(update_elf_header): Check if input and output ELF classes match.
	(elf_machine): Support EM_386 and EM_IAMCU.
	(main): Update input_elf_class.  Set output_elf_class.
	* doc/binutils.texi: Update elfedit.

binutils/testsuite/

	* binutils-all/elfedit-5.d: New file.
	* binutils-all/elfedit.exp: Run elfedit-5.
2015-05-11 09:57:21 -07:00
H.J. Lu
22abe5566a Rename EM_486 to EM_IAMCU
bfd/

	* elfcode.h (elf_object_p): Replace EM_486 with EM_IAMCU.

binutils/

	* dwarf.c (init_dwarf_regnames): Replace EM_486 with EM_IAMCU.
	* readelf.c (guess_is_rela): Likewise.
	(dump_relocations): Likewise.
	(get_machine_name): Likewise.
	(get_elf_section_flags): Likewise.
	(process_section_headers): Likewise.
	(is_32bit_abs_reloc): Likewise.
	(is_32bit_pcrel_reloc): Likewise.

include/elf/

	* common.h (EM_486): Renamed to ...
	(EM_IAMCU): This.
2015-05-11 08:53:05 -07:00
GDB Administrator
415158ef39 Automatic date update in version.in 2015-05-11 00:00:08 +00:00
H.J. Lu
4b71eec627 Replace input_bfd and output_bfd with abfd
The first argument to bfd_get_8/bfd_put_8 isn't used.  But we should
use something real.  Replace input_bfd and output_bfd with abfd.

	* elf32-i386.c (elf_i386_convert_mov_to_lea): Replace input_bfd
	and output_bfd with abfd.
	* elf64-x86-64.c (elf_x86_64_convert_mov_to_lea): Likewise.
2015-05-10 06:44:12 -07:00
Siva Chandra
4c082a81df [Python] Add methods reference_value and const_value to gdb.Value.
gdb/ChangeLog:

	* NEWS (Python Scripting): Mention the new gdb.Value methods.
	* python/py-value.c (valpy_reference_value): New function.
	(valpy_const_value): Likewise.
	(value_object_methods): Add new methods.
	* value.c (make_cv_value): New function.
	* value.h (make_cv_value): Declare.

gdb/doc/ChangeLog:

	* python.texi (Values From Inferior): Add descriptions of new
	methods gdb.Value.reference_value and gdb.Value.const_value.

gdb/testsuite/ChangeLog:

	* gdb.python/py-xmethods.cc: Enhance test case.
	* gdb.python/py-xmethods.exp: New tests.
	* gdb.python/py-xmethods.py (A_indexoper): New xmethod worker
	function.
	(B_indexoper): Likewise.
	(global_dm_list) : Add new xmethod worker functions.
2015-05-09 17:30:35 -07:00
GDB Administrator
10a52f094e Automatic date update in version.in 2015-05-10 00:00:08 +00:00
H.J. Lu
a72d2af2c7 Ignore 0x66 prefix for call/jmp/jcc in 64-bit mode
The operand size prefix (0x66) is ignored for 32-bit PC-relative call,
jmp and jcc in 64-bit mode.

gas/testsuite/

	PR binutis/18386
	* gas/i386/i386.exp: Run x86-64-jump.
	* gas/i386/x86-64-branch.d: Updated.
	* gas/i386/ilp32/x86-64-branch.d: Likewise.
	* gas/i386/x86-64-branch.s: Add tests for the operand size prefix
	with call, jmp and jb.
	* gas/i386/x86-64-jump.d: New file.
	* gas/i386/x86-64-jump.s: Likewise.

ld/testsuite/

	PR binutis/18386
	* ld-x86-64/tlsgdesc.dd: Updated.
	* ld-x86-64/tlspic.dd: Likewise.

opcodes/

	PR binutis/18386
	* i386-dis.c (X86_64_E8): New.
	(X86_64_E9): Likewise.
	Update comments on 'T', 'U', 'V'.  Add comments for '^'.
	(dis386): Replace callT/jmpT with X86_64_E8/X86_64_E9.
	(x86_64_table): Add X86_64_E8 and X86_64_E9.
	(mod_table): Replace {T|} with ^ on Jcall/Jmp.
	(putop): Handle '^'.
	(OP_J): Ignore the operand size prefix in 64-bit.  Don't check
	REX_W.
2015-05-09 06:44:29 -07:00
GDB Administrator
504374b503 Automatic date update in version.in 2015-05-09 00:00:08 +00:00
Sandra Loosemore
afa6c9abf2 Avoid segfault on missing directory table.
2015-05-08  Yao Qi  <yao@codesourcery.com>
	    Sandra Loosemore  <sandra@codesourcery.com>

	gdb/
	* dwarf2read.c (setup_type_unit_groups): Do NULL pointer check
	to 'lh->include_dirs' before accessing to it.
	(psymtab_include_file_name): Likewise.
	(dwarf_decode_lines_1): Likewise.
	(dwarf_decode_lines): Likewise.
	(file_file_name): Likewise.
2015-05-08 12:43:39 -07:00
Sandra Loosemore
35d54293c3 Fix register save offset for nios2 signal handler trampolines.
2015-05-08  Sandra Loosemore  <sandra@codesourcery.com>

	gdb/
	* nios2-linux-tdep.c (NIOS2_SIGRETURN_TRAMP_ADDR): Define.
	(NIOS2_SIGRETURN_REGSAVE_OFFSET): Define.
	(nios2_linux_rt_sigreturn_init): Adjust base address of
	register save area.
2015-05-08 12:34:52 -07:00