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This commit adds multi-target support to GDB. What this means is that
with this commit, GDB can now be connected to different targets at the
same time. E.g., you can debug a live native process and a core dump
at the same time, connect to multiple gdbservers, etc.
Actually, the word "target" is overloaded in gdb. We already have a
target stack, with pushes several target_ops instances on top of one
another. We also have "info target" already, which means something
completely different to what this patch does.
So from here on, I'll be using the "target connections" term, to mean
an open process_stratum target, pushed on a target stack. This patch
makes gdb have multiple target stacks, and multiple process_stratum
targets open simultaneously. The user-visible changes / commands will
also use this terminology, but of course it's all open to debate.
User-interface-wise, not that much changes. The main difference is
that each inferior may have its own target connection.
A target connection (e.g., a target extended-remote connection) may
support debugging multiple processes, just as before.
Say you're debugging against gdbserver in extended-remote mode, and
you do "add-inferior" to prepare to spawn a new process, like:
(gdb) target extended-remote :9999
...
(gdb) start
...
(gdb) add-inferior
Added inferior 2
(gdb) inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
(gdb) file a.out
...
(gdb) start
...
At this point, you have two inferiors connected to the same gdbserver.
With this commit, GDB will maintain a target stack per inferior,
instead of a global target stack.
To preserve the behavior above, by default, "add-inferior" makes the
new inferior inherit a copy of the target stack of the current
inferior. Same across a fork - the child inherits a copy of the
target stack of the parent. While the target stacks are copied, the
targets themselves are not. Instead, target_ops is made a
refcounted_object, which means that target_ops instances are
refcounted, which each inferior counting for a reference.
What if you want to create an inferior and connect it to some _other_
target? For that, this commit introduces a new "add-inferior
-no-connection" option that makes the new inferior not share the
current inferior's target. So you could do:
(gdb) target extended-remote :9999
Remote debugging using :9999
...
(gdb) add-inferior -no-connection
[New inferior 2]
Added inferior 2
(gdb) inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
(gdb) info inferiors
Num Description Executable
1 process 18401 target:/home/pedro/tmp/main
* 2 <null>
(gdb) tar extended-remote :10000
Remote debugging using :10000
...
(gdb) info inferiors
Num Description Executable
1 process 18401 target:/home/pedro/tmp/main
* 2 process 18450 target:/home/pedro/tmp/main
(gdb)
A following patch will extended "info inferiors" to include a column
indicating which connection an inferior is bound to, along with a
couple other UI tweaks.
Other than that, debugging is the same as before. Users interact with
inferiors and threads as before. The only difference is that
inferiors may be bound to processes running in different machines.
That's pretty much all there is to it in terms of noticeable UI
changes.
On to implementation.
Since we can be connected to different systems at the same time, a
ptid_t is no longer a unique identifier. Instead a thread can be
identified by a pair of ptid_t and 'process_stratum_target *', the
later being the instance of the process_stratum target that owns the
process/thread. Note that process_stratum_target inherits from
target_ops, and all process_stratum targets inherit from
process_stratum_target. In earlier patches, many places in gdb were
converted to refer to threads by thread_info pointer instead of
ptid_t, but there are still places in gdb where we start with a
pid/tid and need to find the corresponding inferior or thread_info
objects. So you'll see in the patch many places adding a
process_stratum_target parameter to functions that used to take only a
ptid_t.
Since each inferior has its own target stack now, we can always find
the process_stratum target for an inferior. That is done via a
inf->process_target() convenience method.
Since each inferior has its own target stack, we need to handle the
"beneath" calls when servicing target calls. The solution I settled
with is just to make sure to switch the current inferior to the
inferior you want before making a target call. Not relying on global
context is just not feasible in current GDB. Fortunately, there
aren't that many places that need to do that, because generally most
code that calls target methods already has the current context
pointing to the right inferior/thread. Note, to emphasize -- there's
no method to "switch to this target stack". Instead, you switch the
current inferior, and that implicitly switches the target stack.
In some spots, we need to iterate over all inferiors so that we reach
all target stacks.
Native targets are still singletons. There's always only a single
instance of such targets.
Remote targets however, we'll have one instance per remote connection.
The exec target is still a singleton. There's only one instance. I
did not see the point of instanciating more than one exec_target
object.
After vfork, we need to make sure to push the exec target on the new
inferior. See exec_on_vfork.
For type safety, functions that need a {target, ptid} pair to identify
a thread, take a process_stratum_target pointer for target parameter
instead of target_ops *. Some shared code in gdb/nat/ also need to
gain a target pointer parameter. This poses an issue, since gdbserver
doesn't have process_stratum_target, only target_ops. To fix this,
this commit renames gdbserver's target_ops to process_stratum_target.
I think this makes sense. There's no concept of target stack in
gdbserver, and gdbserver's target_ops really implements a
process_stratum-like target.
The thread and inferior iterator functions also gain
process_stratum_target parameters. These are used to be able to
iterate over threads and inferiors of a given target. Following usual
conventions, if the target pointer is null, then we iterate over
threads and inferiors of all targets.
I tried converting "add-inferior" to the gdb::option framework, as a
preparatory patch, but that stumbled on the fact that gdb::option does
not support file options yet, for "add-inferior -exec". I have a WIP
patchset that adds that, but it's not a trivial patch, mainly due to
need to integrate readline's filename completion, so I deferred that
to some other time.
In infrun.c/infcmd.c, the main change is that we need to poll events
out of all targets. See do_target_wait. Right after collecting an
event, we switch the current inferior to an inferior bound to the
target that reported the event, so that target methods can be used
while handling the event. This makes most of the code transparent to
multi-targets. See fetch_inferior_event.
infrun.c:stop_all_threads is interesting -- in this function we need
to stop all threads of all targets. What the function does is send an
asynchronous stop request to all threads, and then synchronously waits
for events, with target_wait, rinse repeat, until all it finds are
stopped threads. Now that we have multiple targets, it's not
efficient to synchronously block in target_wait waiting for events out
of one target. Instead, we implement a mini event loop, with
interruptible_select, select'ing on one file descriptor per target.
For this to work, we need to be able to ask the target for a waitable
file descriptor. Such file descriptors already exist, they are the
descriptors registered in the main event loop with add_file_handler,
inside the target_async implementations. This commit adds a new
target_async_wait_fd target method that just returns the file
descriptor in question. See wait_one / stop_all_threads in infrun.c.
The 'threads_executing' global is made a per-target variable. Since
it is only relevant to process_stratum_target targets, this is where
it is put, instead of in target_ops.
You'll notice that remote.c includes some FIXME notes. These refer to
the fact that the global arrays that hold data for the remote packets
supported are still globals. For example, if we connect to two
different servers/stubs, then each might support different remote
protocol features. They might even be different architectures, like
e.g., one ARM baremetal stub, and a x86 gdbserver, to debug a
host/controller scenario as a single program. That isn't going to
work correctly today, because of said globals. I'm leaving fixing
that for another pass, since it does not appear to be trivial, and I'd
rather land the base work first. It's already useful to be able to
debug multiple instances of the same server (e.g., a distributed
cluster, where you have full control over the servers installed), so I
think as is it's already reasonable incremental progress.
Current limitations:
- You can only resume more that one target at the same time if all
targets support asynchronous debugging, and support non-stop mode.
It should be possible to support mixed all-stop + non-stop
backends, but that is left for another time. This means that
currently in order to do multi-target with gdbserver you need to
issue "maint set target-non-stop on". I would like to make that
mode be the default, but we're not there yet. Note that I'm
talking about how the target backend works, only. User-visible
all-stop mode works just fine.
- As explained above, connecting to different remote servers at the
same time is likely to produce bad results if they don't support the
exact set of RSP features.
FreeBSD updates courtesy of John Baldwin.
gdb/ChangeLog:
2020-01-10 Pedro Alves <palves@redhat.com>
John Baldwin <jhb@FreeBSD.org>
* aarch64-linux-nat.c
(aarch64_linux_nat_target::thread_architecture): Adjust.
* ada-tasks.c (print_ada_task_info): Adjust find_thread_ptid call.
(task_command_1): Likewise.
* aix-thread.c (sync_threadlists, aix_thread_target::resume)
(aix_thread_target::wait, aix_thread_target::fetch_registers)
(aix_thread_target::store_registers)
(aix_thread_target::thread_alive): Adjust.
* amd64-fbsd-tdep.c: Include "inferior.h".
(amd64fbsd_get_thread_local_address): Pass down target.
* amd64-linux-nat.c (ps_get_thread_area): Use ps_prochandle
thread's gdbarch instead of target_gdbarch.
* break-catch-sig.c (signal_catchpoint_print_it): Adjust call to
get_last_target_status.
* break-catch-syscall.c (print_it_catch_syscall): Likewise.
* breakpoint.c (breakpoints_should_be_inserted_now): Consider all
inferiors.
(update_inserted_breakpoint_locations): Skip if inferiors with no
execution.
(update_global_location_list): When handling moribund locations,
find representative inferior for location's pspace, and use thread
count of its process_stratum target.
* bsd-kvm.c (bsd_kvm_target_open): Pass target down.
* bsd-uthread.c (bsd_uthread_target::wait): Use
as_process_stratum_target and adjust thread_change_ptid and
add_thread calls.
(bsd_uthread_target::update_thread_list): Use
as_process_stratum_target and adjust find_thread_ptid,
thread_change_ptid and add_thread calls.
* btrace.c (maint_btrace_packet_history_cmd): Adjust
find_thread_ptid call.
* corelow.c (add_to_thread_list): Adjust add_thread call.
(core_target_open): Adjust add_thread_silent and thread_count
calls.
(core_target::pid_to_str): Adjust find_inferior_ptid call.
* ctf.c (ctf_target_open): Adjust add_thread_silent call.
* event-top.c (async_disconnect): Pop targets from all inferiors.
* exec.c (add_target_sections): Push exec target on all inferiors
sharing the program space.
(remove_target_sections): Remove the exec target from all
inferiors sharing the program space.
(exec_on_vfork): New.
* exec.h (exec_on_vfork): Declare.
* fbsd-nat.c (fbsd_add_threads): Add fbsd_nat_target parameter.
Pass it down.
(fbsd_nat_target::update_thread_list): Adjust.
(fbsd_nat_target::resume): Adjust.
(fbsd_handle_debug_trap): Add fbsd_nat_target parameter. Pass it
down.
(fbsd_nat_target::wait, fbsd_nat_target::post_attach): Adjust.
* fbsd-tdep.c (fbsd_corefile_thread): Adjust
get_thread_arch_regcache call.
* fork-child.c (gdb_startup_inferior): Pass target down to
startup_inferior and set_executing.
* gdbthread.h (struct process_stratum_target): Forward declare.
(add_thread, add_thread_silent, add_thread_with_info)
(in_thread_list): Add process_stratum_target parameter.
(find_thread_ptid(inferior*, ptid_t)): New overload.
(find_thread_ptid, thread_change_ptid): Add process_stratum_target
parameter.
(all_threads()): Delete overload.
(all_threads, all_non_exited_threads): Add process_stratum_target
parameter.
(all_threads_safe): Use brace initialization.
(thread_count): Add process_stratum_target parameter.
(set_resumed, set_running, set_stop_requested, set_executing)
(threads_are_executing, finish_thread_state): Add
process_stratum_target parameter.
(switch_to_thread): Use is_current_thread.
* i386-fbsd-tdep.c: Include "inferior.h".
(i386fbsd_get_thread_local_address): Pass down target.
* i386-linux-nat.c (i386_linux_nat_target::low_resume): Adjust.
* inf-child.c (inf_child_target::maybe_unpush_target): Remove
have_inferiors check.
* inf-ptrace.c (inf_ptrace_target::create_inferior)
(inf_ptrace_target::attach): Adjust.
* infcall.c (run_inferior_call): Adjust.
* infcmd.c (run_command_1): Pass target to
scoped_finish_thread_state.
(proceed_thread_callback): Skip inferiors with no execution.
(continue_command): Rename 'all_threads' local to avoid hiding
'all_threads' function. Adjust get_last_target_status call.
(prepare_one_step): Adjust set_running call.
(signal_command): Use user_visible_resume_target. Compare thread
pointers instead of inferior_ptid.
(info_program_command): Adjust to pass down target.
(attach_command): Mark target's 'thread_executing' flag.
(stop_current_target_threads_ns): New, factored out from ...
(interrupt_target_1): ... this. Switch inferior before making
target calls.
* inferior-iter.h
(struct all_inferiors_iterator, struct all_inferiors_range)
(struct all_inferiors_safe_range)
(struct all_non_exited_inferiors_range): Filter on
process_stratum_target too. Remove explicit.
* inferior.c (inferior::inferior): Push dummy target on target
stack.
(find_inferior_pid, find_inferior_ptid, number_of_live_inferiors):
Add process_stratum_target parameter, and pass it down.
(have_live_inferiors): Adjust.
(switch_to_inferior_and_push_target): New.
(add_inferior_command, clone_inferior_command): Handle
"-no-connection" parameter. Use
switch_to_inferior_and_push_target.
(_initialize_inferior): Mention "-no-connection" option in
the help of "add-inferior" and "clone-inferior" commands.
* inferior.h: Include "process-stratum-target.h".
(interrupt_target_1): Use bool.
(struct inferior) <push_target, unpush_target, target_is_pushed,
find_target_beneath, top_target, process_target, target_at,
m_stack>: New.
(discard_all_inferiors): Delete.
(find_inferior_pid, find_inferior_ptid, number_of_live_inferiors)
(all_inferiors, all_non_exited_inferiors): Add
process_stratum_target parameter.
* infrun.c: Include "gdb_select.h" and <unordered_map>.
(target_last_proc_target): New global.
(follow_fork_inferior): Push target on new inferior. Pass target
to add_thread_silent. Call exec_on_vfork. Handle target's
reference count.
(follow_fork): Adjust get_last_target_status call. Also consider
target.
(follow_exec): Push target on new inferior.
(struct execution_control_state) <target>: New field.
(user_visible_resume_target): New.
(do_target_resume): Call target_async.
(resume_1): Set target's threads_executing flag. Consider resume
target.
(commit_resume_all_targets): New.
(proceed): Also consider resume target. Skip threads of inferiors
with no execution. Commit resumtion in all targets.
(start_remote): Pass current inferior to wait_for_inferior.
(infrun_thread_stop_requested): Consider target as well. Pass
thread_info pointer to clear_inline_frame_state instead of ptid.
(infrun_thread_thread_exit): Consider target as well.
(random_pending_event_thread): New inferior parameter. Use it.
(do_target_wait): Rename to ...
(do_target_wait_1): ... this. Add inferior parameter, and pass it
down.
(threads_are_resumed_pending_p, do_target_wait): New.
(prepare_for_detach): Adjust calls.
(wait_for_inferior): New inferior parameter. Handle it. Use
do_target_wait_1 instead of do_target_wait.
(fetch_inferior_event): Adjust. Switch to representative
inferior. Pass target down.
(set_last_target_status): Add process_stratum_target parameter.
Save target in global.
(get_last_target_status): Add process_stratum_target parameter and
handle it.
(nullify_last_target_wait_ptid): Clear 'target_last_proc_target'.
(context_switch): Check inferior_ptid == null_ptid before calling
inferior_thread().
(get_inferior_stop_soon): Pass down target.
(wait_one): Rename to ...
(poll_one_curr_target): ... this.
(struct wait_one_event): New.
(wait_one): New.
(stop_all_threads): Adjust.
(handle_no_resumed, handle_inferior_event): Adjust to consider the
event's target.
(switch_back_to_stepped_thread): Also consider target.
(print_stop_event): Update.
(normal_stop): Update. Also consider the resume target.
* infrun.h (wait_for_inferior): Remove declaration.
(user_visible_resume_target): New declaration.
(get_last_target_status, set_last_target_status): New
process_stratum_target parameter.
* inline-frame.c (clear_inline_frame_state(ptid_t)): Add
process_stratum_target parameter, and use it.
(clear_inline_frame_state (thread_info*)): New.
* inline-frame.c (clear_inline_frame_state(ptid_t)): Add
process_stratum_target parameter.
(clear_inline_frame_state (thread_info*)): Declare.
* linux-fork.c (delete_checkpoint_command): Pass target down to
find_thread_ptid.
(checkpoint_command): Adjust.
* linux-nat.c (linux_nat_target::follow_fork): Switch to thread
instead of just tweaking inferior_ptid.
(linux_nat_switch_fork): Pass target down to thread_change_ptid.
(exit_lwp): Pass target down to find_thread_ptid.
(attach_proc_task_lwp_callback): Pass target down to
add_thread/set_running/set_executing.
(linux_nat_target::attach): Pass target down to
thread_change_ptid.
(get_detach_signal): Pass target down to find_thread_ptid.
Consider last target status's target.
(linux_resume_one_lwp_throw, resume_lwp)
(linux_handle_syscall_trap, linux_handle_extended_wait, wait_lwp)
(stop_wait_callback, save_stop_reason, linux_nat_filter_event)
(linux_nat_wait_1, resume_stopped_resumed_lwps): Pass target down.
(linux_nat_target::async_wait_fd): New.
(linux_nat_stop_lwp, linux_nat_target::thread_address_space): Pass
target down.
* linux-nat.h (linux_nat_target::async_wait_fd): Declare.
* linux-tdep.c (get_thread_arch_regcache): Pass target down.
* linux-thread-db.c (struct thread_db_info::process_target): New
field.
(add_thread_db_info): Save target.
(get_thread_db_info): New process_stratum_target parameter. Also
match target.
(delete_thread_db_info): New process_stratum_target parameter.
Also match target.
(thread_from_lwp): Adjust to pass down target.
(thread_db_notice_clone): Pass down target.
(check_thread_db_callback): Pass down target.
(try_thread_db_load_1): Always push the thread_db target.
(try_thread_db_load, record_thread): Pass target down.
(thread_db_target::detach): Pass target down. Always unpush the
thread_db target.
(thread_db_target::wait, thread_db_target::mourn_inferior): Pass
target down. Always unpush the thread_db target.
(find_new_threads_callback, thread_db_find_new_threads_2)
(thread_db_target::update_thread_list): Pass target down.
(thread_db_target::pid_to_str): Pass current inferior down.
(thread_db_target::get_thread_local_address): Pass target down.
(thread_db_target::resume, maintenance_check_libthread_db): Pass
target down.
* nto-procfs.c (nto_procfs_target::update_thread_list): Adjust.
* procfs.c (procfs_target::procfs_init_inferior): Declare.
(proc_set_current_signal, do_attach, procfs_target::wait): Adjust.
(procfs_init_inferior): Rename to ...
(procfs_target::procfs_init_inferior): ... this and adjust.
(procfs_target::create_inferior, procfs_notice_thread)
(procfs_do_thread_registers): Adjust.
* ppc-fbsd-tdep.c: Include "inferior.h".
(ppcfbsd_get_thread_local_address): Pass down target.
* proc-service.c (ps_xfer_memory): Switch current inferior and
program space as well.
(get_ps_regcache): Pass target down.
* process-stratum-target.c
(process_stratum_target::thread_address_space)
(process_stratum_target::thread_architecture): Pass target down.
* process-stratum-target.h
(process_stratum_target::threads_executing): New field.
(as_process_stratum_target): New.
* ravenscar-thread.c
(ravenscar_thread_target::update_inferior_ptid): Pass target down.
(ravenscar_thread_target::wait, ravenscar_add_thread): Pass target
down.
* record-btrace.c (record_btrace_target::info_record): Adjust.
(record_btrace_target::record_method)
(record_btrace_target::record_is_replaying)
(record_btrace_target::fetch_registers)
(get_thread_current_frame_id, record_btrace_target::resume)
(record_btrace_target::wait, record_btrace_target::stop): Pass
target down.
* record-full.c (record_full_wait_1): Switch to event thread.
Pass target down.
* regcache.c (regcache::regcache)
(get_thread_arch_aspace_regcache, get_thread_arch_regcache): Add
process_stratum_target parameter and handle it.
(current_thread_target): New global.
(get_thread_regcache): Add process_stratum_target parameter and
handle it. Switch inferior before calling target method.
(get_thread_regcache): Pass target down.
(get_thread_regcache_for_ptid): Pass target down.
(registers_changed_ptid): Add process_stratum_target parameter and
handle it.
(registers_changed_thread, registers_changed): Pass target down.
(test_get_thread_arch_aspace_regcache): New.
(current_regcache_test): Define a couple local test_target_ops
instances and use them for testing.
(readwrite_regcache): Pass process_stratum_target parameter.
(cooked_read_test, cooked_write_test): Pass mock_target down.
* regcache.h (get_thread_regcache, get_thread_arch_regcache)
(get_thread_arch_aspace_regcache): Add process_stratum_target
parameter.
(regcache::target): New method.
(regcache::regcache, regcache::get_thread_arch_aspace_regcache)
(regcache::registers_changed_ptid): Add process_stratum_target
parameter.
(regcache::m_target): New field.
(registers_changed_ptid): Add process_stratum_target parameter.
* remote.c (remote_state::supports_vCont_probed): New field.
(remote_target::async_wait_fd): New method.
(remote_unpush_and_throw): Add remote_target parameter.
(get_current_remote_target): Adjust.
(remote_target::remote_add_inferior): Push target.
(remote_target::remote_add_thread)
(remote_target::remote_notice_new_inferior)
(get_remote_thread_info): Pass target down.
(remote_target::update_thread_list): Skip threads of inferiors
bound to other targets. (remote_target::close): Don't discard
inferiors. (remote_target::add_current_inferior_and_thread)
(remote_target::process_initial_stop_replies)
(remote_target::start_remote)
(remote_target::remote_serial_quit_handler): Pass down target.
(remote_target::remote_unpush_target): New remote_target
parameter. Unpush the target from all inferiors.
(remote_target::remote_unpush_and_throw): New remote_target
parameter. Pass it down.
(remote_target::open_1): Check whether the current inferior has
execution instead of checking whether any inferior is live. Pass
target down.
(remote_target::remote_detach_1): Pass down target. Use
remote_unpush_target.
(extended_remote_target::attach): Pass down target.
(remote_target::remote_vcont_probe): Set supports_vCont_probed.
(remote_target::append_resumption): Pass down target.
(remote_target::append_pending_thread_resumptions)
(remote_target::remote_resume_with_hc, remote_target::resume)
(remote_target::commit_resume): Pass down target.
(remote_target::remote_stop_ns): Check supports_vCont_probed.
(remote_target::interrupt_query)
(remote_target::remove_new_fork_children)
(remote_target::check_pending_events_prevent_wildcard_vcont)
(remote_target::remote_parse_stop_reply)
(remote_target::process_stop_reply): Pass down target.
(first_remote_resumed_thread): New remote_target parameter. Pass
it down.
(remote_target::wait_as): Pass down target.
(unpush_and_perror): New remote_target parameter. Pass it down.
(remote_target::readchar, remote_target::remote_serial_write)
(remote_target::getpkt_or_notif_sane_1)
(remote_target::kill_new_fork_children, remote_target::kill): Pass
down target.
(remote_target::mourn_inferior): Pass down target. Use
remote_unpush_target.
(remote_target::core_of_thread)
(remote_target::remote_btrace_maybe_reopen): Pass down target.
(remote_target::pid_to_exec_file)
(remote_target::thread_handle_to_thread_info): Pass down target.
(remote_target::async_wait_fd): New.
* riscv-fbsd-tdep.c: Include "inferior.h".
(riscv_fbsd_get_thread_local_address): Pass down target.
* sol2-tdep.c (sol2_core_pid_to_str): Pass down target.
* sol-thread.c (sol_thread_target::wait, ps_lgetregs, ps_lsetregs)
(ps_lgetfpregs, ps_lsetfpregs, sol_update_thread_list_callback):
Adjust.
* solib-spu.c (spu_skip_standalone_loader): Pass down target.
* solib-svr4.c (enable_break): Pass down target.
* spu-multiarch.c (parse_spufs_run): Pass down target.
* spu-tdep.c (spu2ppu_sniffer): Pass down target.
* target-delegates.c: Regenerate.
* target.c (g_target_stack): Delete.
(current_top_target): Return the current inferior's top target.
(target_has_execution_1): Refer to the passed-in inferior's top
target.
(target_supports_terminal_ours): Check whether the initial
inferior was already created.
(decref_target): New.
(target_stack::push): Incref/decref the target.
(push_target, push_target, unpush_target): Adjust.
(target_stack::unpush): Defref target.
(target_is_pushed): Return bool. Adjust to refer to the current
inferior's target stack.
(dispose_inferior): Delete, and inline parts ...
(target_preopen): ... here. Only dispose of the current inferior.
(target_detach): Hold strong target reference while detaching.
Pass target down.
(target_thread_name): Add assertion.
(target_resume): Pass down target.
(target_ops::beneath, find_target_at): Adjust to refer to the
current inferior's target stack.
(get_dummy_target): New.
(target_pass_ctrlc): Pass the Ctrl-C to the first inferior that
has a thread running.
(initialize_targets): Rename to ...
(_initialize_target): ... this.
* target.h: Include "gdbsupport/refcounted-object.h".
(struct target_ops): Inherit refcounted_object.
(target_ops::shortname, target_ops::longname): Make const.
(target_ops::async_wait_fd): New method.
(decref_target): Declare.
(struct target_ops_ref_policy): New.
(target_ops_ref): New typedef.
(get_dummy_target): Declare function.
(target_is_pushed): Return bool.
* thread-iter.c (all_matching_threads_iterator::m_inf_matches)
(all_matching_threads_iterator::all_matching_threads_iterator):
Handle filter target.
* thread-iter.h (struct all_matching_threads_iterator, struct
all_matching_threads_range, class all_non_exited_threads_range):
Filter by target too. Remove explicit.
* thread.c (threads_executing): Delete.
(inferior_thread): Pass down current inferior.
(clear_thread_inferior_resources): Pass down thread pointer
instead of ptid_t.
(add_thread_silent, add_thread_with_info, add_thread): Add
process_stratum_target parameter. Use it for thread and inferior
searches.
(is_current_thread): New.
(thread_info::deletable): Use it.
(find_thread_ptid, thread_count, in_thread_list)
(thread_change_ptid, set_resumed, set_running): New
process_stratum_target parameter. Pass it down.
(set_executing): New process_stratum_target parameter. Pass it
down. Adjust reference to 'threads_executing'.
(threads_are_executing): New process_stratum_target parameter.
Adjust reference to 'threads_executing'.
(set_stop_requested, finish_thread_state): New
process_stratum_target parameter. Pass it down.
(switch_to_thread): Also match inferior.
(switch_to_thread): New process_stratum_target parameter. Pass it
down.
(update_threads_executing): Reimplement.
* top.c (quit_force): Pop targets from all inferior.
(gdb_init): Don't call initialize_targets.
* windows-nat.c (windows_nat_target) <get_windows_debug_event>:
Declare.
(windows_add_thread, windows_delete_thread): Adjust.
(get_windows_debug_event): Rename to ...
(windows_nat_target::get_windows_debug_event): ... this. Adjust.
* tracefile-tfile.c (tfile_target_open): Pass down target.
* gdbsupport/common-gdbthread.h (struct process_stratum_target):
Forward declare.
(switch_to_thread): Add process_stratum_target parameter.
* mi/mi-interp.c (mi_on_resume_1): Add process_stratum_target
parameter. Use it.
(mi_on_resume): Pass target down.
* nat/fork-inferior.c (startup_inferior): Add
process_stratum_target parameter. Pass it down.
* nat/fork-inferior.h (startup_inferior): Add
process_stratum_target parameter.
* python/py-threadevent.c (py_get_event_thread): Pass target down.
gdb/gdbserver/ChangeLog:
2020-01-10 Pedro Alves <palves@redhat.com>
* fork-child.c (post_fork_inferior): Pass target down to
startup_inferior.
* inferiors.c (switch_to_thread): Add process_stratum_target
parameter.
* lynx-low.c (lynx_target_ops): Now a process_stratum_target.
* nto-low.c (nto_target_ops): Now a process_stratum_target.
* linux-low.c (linux_target_ops): Now a process_stratum_target.
* remote-utils.c (prepare_resume_reply): Pass the target to
switch_to_thread.
* target.c (the_target): Now a process_stratum_target.
(done_accessing_memory): Pass the target to switch_to_thread.
(set_target_ops): Ajust to use process_stratum_target.
* target.h (struct target_ops): Rename to ...
(struct process_stratum_target): ... this.
(the_target, set_target_ops): Adjust.
(prepare_to_access_memory): Adjust comment.
* win32-low.c (child_xfer_memory): Adjust to use
process_stratum_target.
(win32_target_ops): Now a process_stratum_target.
|
|
gdb/ChangeLog:
Update copyright year range in all GDB files.
|
|
Currently the target pid_to_str method returns a const char *, so many
implementations have a static buffer that they update. This patch
changes these methods to return a std::string instead. I think this
is cleaner and avoids possible gotchas when calling pid_to_str on
different ptids in a single statement. (Though no such calls exist
currently.)
This also updates various helper functions, and the gdbarch pid_to_str
methods.
I also made a best effort to fix all the callers, but I can't build
some of the *-nat.c files.
Tested by the buildbot.
gdb/ChangeLog
2019-03-13 Tom Tromey <tromey@adacore.com>
* i386-gnu-nat.c (i386_gnu_nat_target::fetch_registers)
(i386_gnu_nat_target::store_registers): Update.
* target-debug.h (target_debug_print_std_string): New macro.
* x86-linux-nat.c (x86_linux_nat_target::enable_btrace): Update.
* windows-tdep.c (display_one_tib): Update.
* tui/tui-stack.c (tui_make_status_line): Update.
* top.c (print_inferior_quit_action): Update.
* thread.c (thr_try_catch_cmd): Update.
(add_thread_with_info): Update.
(thread_target_id_str): Update.
(thr_try_catch_cmd): Update.
(thread_command): Update.
(thread_find_command): Update.
* record-btrace.c (record_btrace_target::info_record)
(record_btrace_resume_thread, record_btrace_target::resume)
(record_btrace_cancel_resume, record_btrace_step_thread)
(record_btrace_target::wait, record_btrace_target::wait)
(record_btrace_target::wait, record_btrace_target::stop): Update.
* progspace.c (print_program_space): Update.
* process-stratum-target.c
(process_stratum_target::thread_address_space): Update.
* linux-fork.c (linux_fork_mourn_inferior)
(detach_checkpoint_command, info_checkpoints_command)
(linux_fork_context): Update.
(linux_fork_detach): Update.
(class scoped_switch_fork_info): Update.
(delete_checkpoint_command): Update.
* infrun.c (follow_fork_inferior): Update.
(follow_fork_inferior): Update.
(proceed_after_vfork_done): Update.
(handle_vfork_child_exec_or_exit): Update.
(follow_exec): Update.
(displaced_step_prepare_throw): Update.
(displaced_step_restore): Update.
(start_step_over): Update.
(resume_1): Update.
(clear_proceed_status_thread): Update.
(proceed): Update.
(print_target_wait_results): Update.
(do_target_wait): Update.
(context_switch): Update.
(stop_all_threads): Update.
(restart_threads): Update.
(finish_step_over): Update.
(handle_signal_stop): Update.
(switch_back_to_stepped_thread): Update.
(keep_going_pass_signal): Update.
(print_exited_reason): Update.
(normal_stop): Update.
* inferior.c (inferior_pid_to_str): Change return type.
(print_selected_inferior): Update.
(add_inferior): Update.
(detach_inferior): Update.
* dummy-frame.c (fprint_dummy_frames): Update.
* dcache.c (dcache_info_1): Update.
* btrace.c (btrace_enable, btrace_disable, btrace_teardown)
(btrace_fetch, btrace_clear): Update.
* linux-tdep.c (linux_core_pid_to_str): Change return type.
* i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Change return
type.
* fbsd-tdep.c (fbsd_core_pid_to_str): Change return type.
* sol2-tdep.h (sol2_core_pid_to_str): Change return type.
* sol2-tdep.c (sol2_core_pid_to_str): Change return type.
* gdbarch.c, gdbarch.h: Rebuild.
* gdbarch.sh (core_pid_to_str): Change return type.
* windows-nat.c (struct windows_nat_target) <pid_to_str>: Change
return type.
(windows_nat_target::pid_to_str): Change return type.
(windows_delete_thread): Update.
(windows_nat_target::attach): Update.
(windows_nat_target::files_info): Update.
* target-delegates.c: Rebuild.
* sol-thread.c (class sol_thread_target) <pid_to_str>: Change
return type.
(sol_thread_target::pid_to_str): Change return type.
* remote.c (class remote_target) <pid_to_str>: Change return
type.
(remote_target::pid_to_str): Change return type.
(extended_remote_target::attach, remote_target::remote_stop_ns)
(remote_target::remote_notif_remove_queued_reply)
(remote_target::push_stop_reply, remote_target::disable_btrace):
Update.
(extended_remote_target::attach): Update.
* remote-sim.c (struct gdbsim_target) <pid_to_str>: Change return
type.
(gdbsim_target::pid_to_str): Change return type.
* ravenscar-thread.c (struct ravenscar_thread_target)
<pid_to_str>: Change return type.
(ravenscar_thread_target::pid_to_str): Change return type.
* procfs.c (class procfs_target) <pid_to_str>: Change return
type.
(procfs_target::pid_to_str): Change return type.
(procfs_target::attach): Update.
(procfs_target::detach): Update.
(procfs_target::fetch_registers): Update.
(procfs_target::store_registers): Update.
(procfs_target::wait): Update.
(procfs_target::files_info): Update.
* obsd-nat.c (obsd_nat_target::pid_to_str): Change return type.
* nto-procfs.c (struct nto_procfs_target) <pid_to_str>: Change
return type.
(nto_procfs_target::pid_to_str): Change return type.
(nto_procfs_target::files_info, nto_procfs_target::attach): Update.
* linux-thread-db.c (class thread_db_target) <pid_to_str>: Change
return type.
* linux-nat.c (linux_nat_target::pid_to_str): Change return type.
(exit_lwp): Update.
(attach_proc_task_lwp_callback, get_detach_signal)
(detach_one_lwp, resume_lwp, linux_nat_target::resume)
(linux_nat_target::resume, wait_lwp, stop_callback)
(maybe_clear_ignore_sigint, stop_wait_callback, status_callback)
(save_stop_reason, select_event_lwp, linux_nat_filter_event)
(linux_nat_wait_1, resume_stopped_resumed_lwps)
(linux_nat_target::wait, linux_nat_stop_lwp): Update.
* inf-ptrace.c (inf_ptrace_target::pid_to_str): Change return
type.
(inf_ptrace_target::attach): Update.
(inf_ptrace_target::files_info): Update.
* go32-nat.c (struct go32_nat_target) <pid_to_str>: Change return
type.
(go32_nat_target::pid_to_str): Change return type.
* gnu-nat.c (gnu_nat_target::pid_to_str): Change return type.
(gnu_nat_target::wait): Update.
(gnu_nat_target::wait): Update.
(gnu_nat_target::resume): Update.
* fbsd-nat.c (fbsd_nat_target::pid_to_str): Change return type.
(fbsd_nat_target::wait): Update.
* darwin-nat.c (darwin_nat_target::pid_to_str): Change return
type.
(darwin_nat_target::attach): Update.
* corelow.c (class core_target) <pid_to_str>: Change return type.
(core_target::pid_to_str): Change return type.
* target.c (normal_pid_to_str): Change return type.
(default_pid_to_str): Likewise.
(target_pid_to_str): Change return type.
(target_translate_tls_address): Update.
(target_announce_detach): Update.
* bsd-uthread.c (struct bsd_uthread_target) <pid_to_str>: Change
return type.
(bsd_uthread_target::pid_to_str): Change return type.
* bsd-kvm.c (class bsd_kvm_target) <pid_to_str>: Change return
type.
(bsd_kvm_target::pid_to_str): Change return type.
* aix-thread.c (class aix_thread_target) <pid_to_str>: Change
return type.
(aix_thread_target::pid_to_str): Change return type.
* target.h (struct target_ops) <pid_to_str>: Change return type.
(target_pid_to_str, normal_pid_to_str): Likewise.
* obsd-nat.h (class obsd_nat_target) <pid_to_str>: Change return
type.
* linux-nat.h (class linux_nat_target) <pid_to_str>: Change return
type.
* inf-ptrace.h (struct inf_ptrace_target) <pid_to_str>: Change
return type.
* gnu-nat.h (struct gnu_nat_target) <pid_to_str>: Change return
type.
* fbsd-nat.h (class fbsd_nat_target) <pid_to_str>: Change return
type.
* darwin-nat.h (class darwin_nat_target) <pid_to_str>: Change
return type.
|
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This commit applies all changes made after running the gdb/copyright.py
script.
Note that one file was flagged by the script, due to an invalid
copyright header
(gdb/unittests/basic_string_view/element_access/char/empty.cc).
As the file was copied from GCC's libstdc++-v3 testsuite, this commit
leaves this file untouched for the time being; a patch to fix the header
was sent to gcc-patches first.
gdb/ChangeLog:
Update copyright year range in all GDB files.
|
|
This removes ptid_get_lwp in favor of calling the ptid_t::lwp method.
gdb/ChangeLog
2018-07-03 Tom Tromey <tom@tromey.com>
* common/ptid.c (ptid_get_lwp): Remove.
* common/ptid.h (ptid_get_lwp): Don't declare.
* aarch64-linux-nat.c: Update.
* ada-tasks.c: Update.
* aix-thread.c: Update.
* amd64-linux-nat.c: Update.
* arm-linux-nat.c: Update.
* corelow.c: Update.
* fbsd-nat.c: Update.
* fbsd-tdep.c: Update.
* gnu-nat.c: Update.
* i386-cygwin-tdep.c: Update.
* i386-gnu-nat.c: Update.
* i386-linux-nat.c: Update.
* ia64-linux-nat.c: Update.
* inf-ptrace.c: Update.
* infrun.c: Update.
* linux-fork.c: Update.
* linux-nat.c: Update.
* linux-tdep.c: Update.
* linux-thread-db.c: Update.
* mips-linux-nat.c: Update.
* nat/aarch64-linux-hw-point.c: Update.
* nat/aarch64-linux.c: Update.
* nat/linux-btrace.c: Update.
* nat/linux-osdata.c: Update.
* nat/linux-procfs.c: Update.
* nat/x86-linux-dregs.c: Update.
* obsd-nat.c: Update.
* ppc-fbsd-nat.c: Update.
* ppc-linux-nat.c: Update.
* procfs.c: Update.
* python/py-infthread.c: Update.
* ravenscar-thread.c: Update.
* remote.c: Update.
* s390-linux-nat.c: Update.
* sol-thread.c: Update.
* sol2-tdep.c: Update.
* spu-linux-nat.c: Update.
* x86-linux-nat.c: Update.
* xtensa-linux-nat.c: Update.
gdb/gdbserver/ChangeLog
2018-07-03 Tom Tromey <tom@tromey.com>
* linux-low.c: Update.
* linux-mips-low.c: Update.
* lynx-low.c: Update.
* nto-low.c: Update.
* remote-utils.c: Update.
* server.c: Update.
* spu-low.c: Update.
* target.c: Update.
* thread-db.c: Update.
|
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gdb/ChangeLog:
Update copyright year range in all GDB files
|
|
-Wwrite-strings flagged a missing cast for example here:
static char *
ravenscar_extra_thread_info (struct target_ops *self, struct thread_info *tp)
{
return "Ravenscar task";
Since callers are not supposed to free the string returned by these
methods, change the methods' signature to return const strings.
gdb/ChangeLog:
2017-04-05 Pedro Alves <palves@redhat.com>
* aix-thread.c (aix_thread_pid_to_str)
(aix_thread_extra_thread_info): Constify.
* bsd-kvm.c (bsd_kvm_pid_to_str): Constify.
* bsd-uthread.c (bsd_uthread_extra_thread_info)
(bsd_uthread_pid_to_str): Constify.
* corelow.c (core_pid_to_str): Constify.
* darwin-nat.c (darwin_pid_to_str): Constify.
* fbsd-nat.c (fbsd_pid_to_str): Constify.
* fbsd-tdep.c (fbsd_core_pid_to_str, gdbarch_core_pid_to_str):
Constify.
* gnu-nat.c (gnu_pid_to_str): Constify.
* go32-nat.c (go32_pid_to_str): Constify.
* i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Constify.
* inf-ptrace.c (inf_ptrace_pid_to_str): Constify.
* inferior.c (inferior_pid_to_str): Constify.
* linux-nat.c (linux_nat_pid_to_str): Constify.
* linux-tdep.c (linux_core_pid_to_str): Constify.
* linux-thread-db.c (thread_db_pid_to_str)
(thread_db_extra_thread_info): Constify.
* nto-tdep.c (nto_extra_thread_info): Constify.
* nto-tdep.h (nto_extra_thread_info): Constify.
* obsd-nat.c (obsd_pid_to_str): Constify.
* procfs.c (procfs_pid_to_str): Constify.
* ravenscar-thread.c (ravenscar_extra_thread_info)
(ravenscar_pid_to_str): Constify.
* remote-sim.c (gdbsim_pid_to_str): Constify.
* remote.c (remote_threads_extra_info, remote_pid_to_str):
Constify.
* sol-thread.c (solaris_pid_to_str): Constify.
* sol2-tdep.c (sol2_core_pid_to_str): Constify.
* sol2-tdep.h (sol2_core_pid_to_str): Constify.
* target.c (default_pid_to_str, target_pid_to_str)
(normal_pid_to_str, default_pid_to_str): Constify.
* target.h (target_ops::to_pid_to_str)
(target_ops::to_extra_thread_info): Constify.
(target_pid_to_str, normal_pid_to_str): Constify.
* windows-nat.c (windows_pid_to_str): Constify.
* gdbarch.sh (core_pid_to_str): Constify.
* target-delegates.c: Regenerate.
* gdbarch.h, gdbarch.c: Regenerate.
|
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This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
|
|
gdb/ChangeLog:
Update year range in copyright notice of all files.
|
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gdb/ChangeLog:
Update year range in copyright notice of all files.
|
|
This patch introduces find_inferior_ptid to replace the common idiom
find_inferior_pid (ptid_get_pid (...));
It replaces all the instances of that idiom that I found with the new
function.
No significant changes before/after the patch in the regression suite
on amd64 linux.
gdb/ChangeLog:
* inferior.c (find_inferior_ptid): New function.
* inferior.h (find_inferior_ptid): New declaration.
* ada-tasks.c (ada_get_task_number): Use find_inferior_ptid.
* corelow.c (core_pid_to_str): Same.
* darwin-nat.c (darwin_resume): Same.
* infrun.c (fetch_inferior_event): Same.
(get_inferior_stop_soon): Same.
(handle_inferior_event): Same.
(handle_signal_stop): Same.
* linux-nat.c (resume_lwp): Same.
(stop_wait_callback): Same.
* mi/mi-interp.c (mi_new_thread): Same.
(mi_thread_exit): Same.
* proc-service.c (ps_pglobal_lookup): Same.
* record-btrace.c (record_btrace_step_thread): Same.
* remote-sim.c (gdbsim_close_inferior): Same.
(gdbsim_resume): Same.
(gdbsim_stop): Same.
* sol2-tdep.c (sol2_core_pid_to_str): Same.
* target.c (memory_xfer_partial_1): Same.
(default_thread_address_space): Same.
* thread.c (thread_change_ptid): Same.
(switch_to_thread): Same.
(do_restore_current_thread_cleanup): Same.
|
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This patch starts changing minimal symbols to be independent of the
program space.
Specifically, it adds a new objfile parameter to MSYMBOL_VALUE_ADDRESS
and changes all the code to use it. This is needed so we can change
gdb to apply the section offset when a minsym's address is computed,
as opposed to baking the offsets into the symbol itself.
A few spots still need the unrelocated address. For these, we
introduce MSYMBOL_VALUE_RAW_ADDRESS.
As a convenience, we also add the new macro BMSYMBOL_VALUE_ADDRESS,
which computes the address of a bound minimal symbol. This just does
the obvious thing with the fields.
Note that this change does not actually enable program space
independence. That requires more changes to gdb. However, to ensure
that these changes compile properly, this patch does add the needed
section lookup code to MSYMBOL_VALUE_ADDRESS -- it just ensures it has
no effect at runtime by multiplying the offset by 0.
2014-02-26 Tom Tromey <tromey@redhat.com>
* ada-lang.c (ada_main_name): Update.
(ada_add_standard_exceptions): Update.
* ada-tasks.c (ada_tasks_inferior_data_sniffer): Update.
* aix-thread.c (pdc_symbol_addrs, pd_enable): Update.
* arm-tdep.c (skip_prologue_function, arm_skip_stub): Update.
* auxv.c (ld_so_xfer_auxv): Update.
* avr-tdep.c (avr_scan_prologue): Update.
* ax-gdb.c (gen_var_ref): Update.
* blockframe.c (get_pc_function_start)
(find_pc_partial_function_gnu_ifunc): Update.
* breakpoint.c (create_overlay_event_breakpoint)
(create_longjmp_master_breakpoint)
(create_std_terminate_master_breakpoint)
(create_exception_master_breakpoint): Update.
* bsd-uthread.c (bsd_uthread_lookup_address): Update.
* c-valprint.c (c_val_print): Update.
* coff-pe-read.c (add_pe_forwarded_sym): Update.
* common/agent.c (agent_look_up_symbols): Update.
* dbxread.c (find_stab_function_addr, end_psymtab): Update.
* dwarf2loc.c (call_site_to_target_addr): Update.
* dwarf2read.c (dw2_find_pc_sect_symtab): Update.
* elfread.c (elf_gnu_ifunc_record_cache)
(elf_gnu_ifunc_resolve_by_got): Update.
* findvar.c (default_read_var_value): Update.
* frame.c (inside_main_func): Update.
* frv-tdep.c (frv_frame_this_id): Update.
* glibc-tdep.c (glibc_skip_solib_resolver): Update.
* gnu-v3-abi.c (gnuv3_get_typeid, gnuv3_skip_trampoline):
Update.
* hppa-hpux-tdep.c (hppa64_hpux_search_dummy_call_sequence)
(hppa_hpux_find_dummy_bpaddr): Update.
* hppa-tdep.c (hppa_symbol_address): Update.
* infcmd.c (until_next_command): Update.
* jit.c (jit_read_descriptor, jit_breakpoint_re_set_internal):
Update.
* linespec.c (minsym_found, add_minsym): Update.
* linux-nat.c (get_signo): Update.
* linux-thread-db.c (inferior_has_bug): Update.
* m32c-tdep.c (m32c_return_value)
(m32c_m16c_address_to_pointer): Update.
* m32r-tdep.c (m32r_frame_this_id): Update.
* m68hc11-tdep.c (m68hc11_get_register_info): Update.
* machoread.c (macho_resolve_oso_sym_with_minsym): Update.
* maint.c (maintenance_translate_address): Update.
* minsyms.c (lookup_minimal_symbol_by_pc_name): Update.
(frob_address): New function.
(lookup_minimal_symbol_by_pc_section_1): Use raw addresses,
frob_address. Rename parameter to "pc_in".
(compare_minimal_symbols, compact_minimal_symbols): Use raw
addresses.
(find_solib_trampoline_target, minimal_symbol_upper_bound):
Update.
* mips-linux-tdep.c (mips_linux_skip_resolver): Update.
* mips-tdep.c (mips_skip_pic_trampoline_code): Update.
* objc-lang.c (find_objc_msgsend): Update.
* objfiles.c (objfile_relocate1): Update.
* obsd-tdep.c (obsd_skip_solib_resolver): Update.
* p-valprint.c (pascal_val_print): Update.
* parse.c (write_exp_msymbol): Update.
* ppc-linux-tdep.c (ppc_linux_spe_context_lookup)
(ppc_elfv2_skip_entrypoint): Update.
* ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update.
* printcmd.c (build_address_symbolic, msym_info)
(address_info): Update.
* proc-service.c (ps_pglobal_lookup): Update.
* psymtab.c (find_pc_sect_psymtab_closer)
(find_pc_sect_psymtab, find_pc_sect_symtab_from_partial):
Change msymbol parameter to bound_minimal_symbol.
* ravenscar-thread.c (get_running_thread_id): Update.
* remote.c (remote_check_symbols): Update.
* sh64-tdep.c (sh64_elf_make_msymbol_special): Use raw
address.
* sol2-tdep.c (sol2_skip_solib_resolver): Update.
* solib-dsbt.c (lm_base): Update.
* solib-frv.c (lm_base, main_got): Update.
* solib-irix.c (locate_base): Update.
* solib-som.c (som_solib_create_inferior_hook)
(link_map_start): Update.
* solib-spu.c (spu_enable_break, ocl_enable_break): Update.
* solib-svr4.c (elf_locate_base, enable_break): Update.
* spu-tdep.c (spu_get_overlay_table, spu_catch_start)
(flush_ea_cache): Update.
* stabsread.c (define_symbol, scan_file_globals): Update.
* stack.c (find_frame_funname): Update.
* symfile-debug.c (debug_qf_expand_symtabs_matching)
(debug_qf_find_pc_sect_symtab): Update.
* symfile.c (simple_read_overlay_table)
(simple_overlay_update): Update.
* symfile.h (struct quick_symbol_functions)
<find_pc_sect_symtab>: Change type of msymbol to
bound_minimal_symbol.
* symmisc.c (dump_msymbols): Update.
* symtab.c (find_pc_sect_symtab_via_partial)
(find_pc_sect_psymtab, find_pc_sect_line, skip_prologue_sal)
(search_symbols, print_msymbol_info): Update.
* symtab.h (MSYMBOL_VALUE_RAW_ADDRESS): New macro.
(MSYMBOL_VALUE_ADDRESS): Redefine.
(BMSYMBOL_VALUE_ADDRESS): New macro.
* tracepoint.c (scope_info): Update.
* tui/tui-disasm.c (tui_find_disassembly_address)
(tui_get_begin_asm_address): Update.
* valops.c (find_function_in_inferior): Update.
* value.c (value_static_field, value_fn_field): Update.
|
|
This patch changes a few minimal symbol lookup functions to return a
bound_minimal_symbol rather than a pointer to the minsym. This change
helps prepare gdb for computing a minimal symbol's address at the
point of use.
Note that this changes even those functions that ostensibly search a
single objfile. That was necessary because, in fact, those functions
can search an objfile and its separate debug objfiles; and it is
important for the caller to know in which objfile the minimal symbol
was actually found.
The bulk of this patch is mechanical.
2014-02-26 Tom Tromey <tromey@redhat.com>
* ada-lang.c (ada_update_initial_language): Update.
(ada_main_name, ada_has_this_exception_support): Update.
* ada-tasks.c (ada_tasks_inferior_data_sniffer): Update.
* aix-thread.c (pdc_symbol_addrs, pd_enable): Update.
* arm-tdep.c (arm_skip_stub): Update.
* auxv.c (ld_so_xfer_auxv): Update.
* avr-tdep.c (avr_scan_prologue): Update.
* ax-gdb.c (gen_var_ref): Update.
* breakpoint.c (struct breakpoint_objfile_data)
<overlay_msym, longjmp_msym, terminate_msym, exception_msym>: Change
type to bound_minimal_symbol.
(create_overlay_event_breakpoint)
(create_longjmp_master_breakpoint)
(create_std_terminate_master_breakpoint)
(create_exception_master_breakpoint): Update.
* bsd-uthread.c (bsd_uthread_lookup_address): Update.
* c-exp.y (classify_name): Update.
* coffread.c (coff_symfile_read): Update.
* common/agent.c (agent_look_up_symbols): Update.
* d-lang.c (d_main_name): Update.
* dbxread.c (find_stab_function_addr, end_psymtab): Update.
* dec-thread.c (enable_dec_thread): Update.
* dwarf2loc.c (call_site_to_target_addr): Update.
* elfread.c (elf_gnu_ifunc_resolve_by_got): Update.
* eval.c (evaluate_subexp_standard): Update.
* findvar.c (struct minsym_lookup_data) <result>: Change type
to bound_minimal_symbol.
<objfile>: Remove.
(minsym_lookup_iterator_cb, default_read_var_value): Update.
* frame.c (inside_main_func): Update.
* frv-tdep.c (frv_frame_this_id): Update.
* gcore.c (call_target_sbrk): Update.
* glibc-tdep.c (glibc_skip_solib_resolver): Update.
* gnu-v3-abi.c (gnuv3_get_typeid, gnuv3_skip_trampoline):
Update.
* go-lang.c (go_main_name): Update.
* hppa-hpux-tdep.c (hppa_hpux_skip_trampoline_code)
(hppa_hpux_find_import_stub_for_addr): Update.
* hppa-tdep.c (hppa_extract_17, hppa_lookup_stub_minimal_symbol):
Update. Change return type.
* hppa-tdep.h (hppa_lookup_stub_minimal_symbol): Change return
type.
* jit.c (jit_breakpoint_re_set_internal): Update.
* linux-fork.c (inferior_call_waitpid, checkpoint_command):
Update.
* linux-nat.c (get_signo): Update.
* linux-thread-db.c (inferior_has_bug): Update
* m32c-tdep.c (m32c_return_value)
(m32c_m16c_address_to_pointer): Update.
* m32r-tdep.c (m32r_frame_this_id): Update.
* m68hc11-tdep.c (m68hc11_get_register_info): Update.
* machoread.c (macho_resolve_oso_sym_with_minsym): Update.
* minsyms.c (lookup_minimal_symbol_internal): Rename to
lookup_minimal_symbol. Change return type.
(lookup_minimal_symbol): Remove.
(lookup_bound_minimal_symbol): Update.
(lookup_minimal_symbol_text): Change return type.
(lookup_minimal_symbol_solib_trampoline): Change return type.
* minsyms.h (lookup_minimal_symbol, lookup_minimal_symbol_text)
(lookup_minimal_symbol_solib_trampoline): Change return type.
* mips-linux-tdep.c (mips_linux_skip_resolver): Update.
* objc-lang.c (lookup_objc_class, lookup_child_selector)
(value_nsstring, find_imps): Update.
* obsd-tdep.c (obsd_skip_solib_resolver): Update.
* p-lang.c (pascal_main_name): Update.
* ppc-linux-tdep.c (ppc_linux_spe_context_lookup): Update.
* ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update.
* proc-service.c (ps_pglobal_lookup): Update.
* ravenscar-thread.c (get_running_thread_msymbol): Change
return type.
(has_ravenscar_runtime, get_running_thread_id): Update.
* remote.c (remote_check_symbols): Update.
* sol-thread.c (ps_pglobal_lookup): Update.
* sol2-tdep.c (sol2_skip_solib_resolver): Update.
* solib-dsbt.c (lm_base): Update.
* solib-frv.c (lm_base, frv_relocate_section_addresses):
Update.
* solib-irix.c (locate_base): Update.
* solib-som.c (som_solib_create_inferior_hook)
(som_solib_desire_dynamic_linker_symbols, link_map_start):
Update.
* solib-spu.c (spu_enable_break): Update.
* solib-svr4.c (elf_locate_base, enable_break): Update.
* spu-tdep.c (spu_get_overlay_table, spu_catch_start)
(flush_ea_cache): Update.
* stabsread.c (define_symbol): Update.
* symfile.c (simple_read_overlay_table): Update.
* symtab.c (find_pc_sect_line): Update.
* tracepoint.c (scope_info): Update.
* tui-disasm.c (tui_get_begin_asm_address): Update.
* value.c (value_static_field): Update.
|
|
In a later patch we're going to change the minimal symbol address
calculation to apply section offsets at the point of use. To make it
simpler to catch potential problem spots, this patch changes the
representation of minimal symbols and introduces new
minimal-symbol-specific variants of the various accessors. This is
necessary because it would be excessively ambitious to try to convert
all the symbol types at once.
The core of this change is just renaming a field in minimal_symbol;
the rest is just a fairly mechanical rewording.
2014-02-26 Tom Tromey <tromey@redhat.com>
* symtab.h (struct minimal_symbol) <mginfo>: Rename from ginfo.
(MSYMBOL_VALUE, MSYMBOL_VALUE_ADDRESS, MSYMBOL_VALUE_BYTES)
(MSYMBOL_BLOCK_VALUE, MSYMBOL_VALUE_CHAIN, MSYMBOL_LANGUAGE)
(MSYMBOL_SECTION, MSYMBOL_OBJ_SECTION, MSYMBOL_NATURAL_NAME)
(MSYMBOL_LINKAGE_NAME, MSYMBOL_PRINT_NAME, MSYMBOL_DEMANGLED_NAME)
(MSYMBOL_SET_LANGUAGE, MSYMBOL_SEARCH_NAME)
(MSYMBOL_MATCHES_SEARCH_NAME, MSYMBOL_SET_NAMES): New macros.
* ada-lang.c (ada_main_name): Update.
(ada_lookup_simple_minsym): Update.
(ada_make_symbol_completion_list): Update.
(ada_add_standard_exceptions): Update.
* ada-tasks.c (read_atcb, ada_tasks_inferior_data_sniffer): Update.
* aix-thread.c (pdc_symbol_addrs, pd_enable): Update.
* amd64-windows-tdep.c (amd64_skip_main_prologue): Update.
* arm-tdep.c (skip_prologue_function): Update.
(arm_skip_stack_protector, arm_skip_stub): Update.
* arm-wince-tdep.c (arm_pe_skip_trampoline_code): Update.
(arm_wince_skip_main_prologue): Update.
* auxv.c (ld_so_xfer_auxv): Update.
* avr-tdep.c (avr_scan_prologue): Update.
* ax-gdb.c (gen_var_ref): Update.
* block.c (call_site_for_pc): Update.
* blockframe.c (get_pc_function_start): Update.
(find_pc_partial_function_gnu_ifunc): Update.
* breakpoint.c (create_overlay_event_breakpoint): Update.
(create_longjmp_master_breakpoint): Update.
(create_std_terminate_master_breakpoint): Update.
(create_exception_master_breakpoint): Update.
(resolve_sal_pc): Update.
* bsd-uthread.c (bsd_uthread_lookup_address): Update.
* btrace.c (ftrace_print_function_name, ftrace_function_switched):
Update.
* c-valprint.c (c_val_print): Update.
* coff-pe-read.c (add_pe_forwarded_sym): Update.
* coffread.c (coff_symfile_read): Update.
* common/agent.c (agent_look_up_symbols): Update.
* dbxread.c (find_stab_function_addr): Update.
(end_psymtab): Update.
* dwarf2loc.c (call_site_to_target_addr): Update.
(func_verify_no_selftailcall): Update.
(tailcall_dump): Update.
(call_site_find_chain_1): Update.
(dwarf_expr_reg_to_entry_parameter): Update.
* elfread.c (elf_gnu_ifunc_record_cache): Update.
(elf_gnu_ifunc_resolve_by_got): Update.
* f-valprint.c (info_common_command): Update.
* findvar.c (read_var_value): Update.
* frame.c (get_prev_frame_1): Update.
(inside_main_func): Update.
* frv-tdep.c (frv_skip_main_prologue): Update.
(frv_frame_this_id): Update.
* glibc-tdep.c (glibc_skip_solib_resolver): Update.
* gnu-v2-abi.c (gnuv2_value_rtti_type): Update.
* gnu-v3-abi.c (gnuv3_rtti_type): Update.
(gnuv3_skip_trampoline): Update.
* hppa-hpux-tdep.c (hppa32_hpux_in_solib_call_trampoline): Update.
(hppa64_hpux_in_solib_call_trampoline): Update.
(hppa_hpux_skip_trampoline_code): Update.
(hppa64_hpux_search_dummy_call_sequence): Update.
(hppa_hpux_find_import_stub_for_addr): Update.
(hppa_hpux_find_dummy_bpaddr): Update.
* hppa-tdep.c (hppa_symbol_address)
(hppa_lookup_stub_minimal_symbol): Update.
* i386-tdep.c (i386_skip_main_prologue): Update.
(i386_pe_skip_trampoline_code): Update.
* ia64-tdep.c (ia64_convert_from_func_ptr_addr): Update.
* infcall.c (get_function_name): Update.
* infcmd.c (until_next_command): Update.
* jit.c (jit_breakpoint_re_set_internal): Update.
(jit_inferior_init): Update.
* linespec.c (minsym_found): Update.
(add_minsym): Update.
* linux-fork.c (info_checkpoints_command): Update.
* linux-nat.c (get_signo): Update.
* linux-thread-db.c (inferior_has_bug): Update.
* m32c-tdep.c (m32c_return_value): Update.
(m32c_m16c_address_to_pointer): Update.
(m32c_m16c_pointer_to_address): Update.
* m32r-tdep.c (m32r_frame_this_id): Update.
* m68hc11-tdep.c (m68hc11_get_register_info): Update.
* machoread.c (macho_resolve_oso_sym_with_minsym): Update.
* maint.c (maintenance_translate_address): Update.
* minsyms.c (add_minsym_to_hash_table): Update.
(add_minsym_to_demangled_hash_table): Update.
(msymbol_objfile): Update.
(lookup_minimal_symbol): Update.
(iterate_over_minimal_symbols): Update.
(lookup_minimal_symbol_text): Update.
(lookup_minimal_symbol_by_pc_name): Update.
(lookup_minimal_symbol_solib_trampoline): Update.
(lookup_minimal_symbol_by_pc_section_1): Update.
(lookup_minimal_symbol_and_objfile): Update.
(prim_record_minimal_symbol_full): Update.
(compare_minimal_symbols): Update.
(compact_minimal_symbols): Update.
(build_minimal_symbol_hash_tables): Update.
(install_minimal_symbols): Update.
(terminate_minimal_symbol_table): Update.
(find_solib_trampoline_target): Update.
(minimal_symbol_upper_bound): Update.
* mips-linux-tdep.c (mips_linux_skip_resolver): Update.
* mips-tdep.c (mips_stub_frame_sniffer): Update.
(mips_skip_pic_trampoline_code): Update.
* msp430-tdep.c (msp430_skip_trampoline_code): Update.
* objc-lang.c (selectors_info): Update.
(classes_info): Update.
(find_methods): Update.
(find_imps): Update.
(find_objc_msgsend): Update.
* objfiles.c (objfile_relocate1): Update.
* objfiles.h (ALL_OBJFILE_MSYMBOLS): Update.
* obsd-tdep.c (obsd_skip_solib_resolver): Update.
* p-valprint.c (pascal_val_print): Update.
* parse.c (write_exp_msymbol): Update.
* ppc-linux-tdep.c (powerpc_linux_in_dynsym_resolve_code)
(ppc_linux_spe_context_lookup, ppc_elfv2_skip_entrypoint): Update.
* ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update.
* printcmd.c (build_address_symbolic): Update.
(sym_info): Update.
(address_info): Update.
* proc-service.c (ps_pglobal_lookup): Update.
* psymtab.c (find_pc_sect_psymtab_closer): Update.
(find_pc_sect_psymtab): Update.
* python/py-framefilter.c (py_print_frame): Update.
* ravenscar-thread.c (get_running_thread_id): Update.
* record-btrace.c (btrace_call_history, btrace_get_bfun_name):
Update.
* remote.c (remote_check_symbols): Update.
* rs6000-tdep.c (rs6000_skip_main_prologue): Update.
(rs6000_skip_trampoline_code): Update.
* sh64-tdep.c (sh64_elf_make_msymbol_special): Update.
* sol2-tdep.c (sol2_skip_solib_resolver): Update.
* solib-dsbt.c (lm_base): Update.
* solib-frv.c (lm_base): Update.
(main_got): Update.
* solib-irix.c (locate_base): Update.
* solib-som.c (som_solib_create_inferior_hook): Update.
(som_solib_desire_dynamic_linker_symbols): Update.
(link_map_start): Update.
* solib-spu.c (spu_enable_break): Update.
(ocl_enable_break): Update.
* solib-svr4.c (elf_locate_base): Update.
(enable_break): Update.
* spu-tdep.c (spu_get_overlay_table): Update.
(spu_catch_start): Update.
(flush_ea_cache): Update.
* stabsread.c (define_symbol): Update.
(scan_file_globals): Update.
* stack.c (find_frame_funname): Update.
(frame_info): Update.
* symfile.c (simple_read_overlay_table): Update.
(simple_overlay_update): Update.
* symmisc.c (dump_msymbols): Update.
* symtab.c (fixup_section): Update.
(find_pc_sect_line): Update.
(skip_prologue_sal): Update.
(search_symbols): Update.
(print_msymbol_info): Update.
(rbreak_command): Update.
(MCOMPLETION_LIST_ADD_SYMBOL): New macro.
(completion_list_objc_symbol): Update.
(default_make_symbol_completion_list_break_on): Update.
* tracepoint.c (scope_info): Update.
* tui/tui-disasm.c (tui_find_disassembly_address): Update.
(tui_get_begin_asm_address): Update.
* valops.c (find_function_in_inferior): Update.
* value.c (value_static_field): Update.
(value_fn_field): Update.
|
|
|
|
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
|
|
Pedro Alves <palves@redhat.com>
* procfs.c (procfs_make_note_section) [NEW_PROC_API]: Output a
NT_PSTATUS note.
* sol2-tdep.c (sol2_core_pid_to_str): Print process IDs
differently from LWP IDs.
|
|
gdb/ChangeLog:
Copyright year update in most files of the GDB Project.
|
|
|
|
Automatic update by copyright.sh.
|
|
(frame_unwind_caller_id): ... this. All callers updated.
(frame_pc_unwind): Renamed to ...
(frame_unwind_caller_pc): ... this. All callers updated.
* frame.h: Document frame_unwind_caller_WHAT functions.
(frame_unwind_id): Renamed to ...
(frame_unwind_caller_id): ... this.
(frame_pc_unwind): Renamed to ...
(frame_unwind_caller_pc): ... this.
* hppa-tdep.c (hppa_find_unwind_entry_in_block): Correct comment.
* stack.c (parse_frame_specification_1): Do not rely on
frame_unwind_id.
|
|
(core_file_thread_alive): Rename to...
(core_thread_alive): ... this.
(core_pid_to_str): Try gdbarch_core_pid_to_str first.
(init_core_ops): Adjust.
(coreops_suppress_target): Delete.
(_initialize_corelow): Unconditionally add core_ops.
* procfs.c: Include "inf-child.h".
(procfs_ops): Delete.
(init_procfs_ops): Delete. Reimplement as...
(procfs_target): ... this, inheriting from inf-child.
(procfs_attach, procfs_detach, procfs_fetch_registers): Adjust.
(procfs_prepare_to_store): Delete.
(procfs_store_registers, procfs_resume): Adjust.
(procfs_open): Delete.
(procfs_suppress_run): Delete.
(procfs_can_run): Delete.
(procfs_mourn_inferior): Adjust.
(procfs_init_inferior): Add target_ops parameter. Adjust.
(procfs_create_inferior): Don't pass procfs_init_inferior to
fork_inferior. Instead call it after fork_inferior returns.
(procfs_find_new_threads): Adjust.
(_initialize_procfs): Adjust to use procfs_target instead of
init_procfs_ops.
* sol-thread.c (orig_core_ops, sol_core_ops): Delete.
(lwp_to_thread): Use target_thread_alive.
(sol_thread_open): Delete.
(sol_thread_attach): Delete.
(sol_thread_detach, sol_thread_resume, sol_thread_wait)
(sol_thread_fetch_registers, sol_thread_store_registers): Adjust
to use find_target_beneath.
(sol_thread_prepare_to_store, sol_thread_xfer_memory): Delete.
(sol_thread_xfer_partial): Adjust to use find_target_beneath.
(sol_thread_files_info, sol_thread_kill_inferior): Delete.
(check_for_thread_db): New.
(sol_thread_notice_signals, sol_thread_create_inferior): Delete.
(sol_thread_new_objfile): Call check_for_thread_db.
(sol_thread_mourn_inferior): Adjust to use find_target_beneath.
(sol_thread_can_run): Delete.
(sol_thread_alive): Adjust to use find_target_beneath.
(sol_thread_stop): Delete.
(rw_common): Use target_write_memory or target_read_memory.
(ps_lgetregs, ps_lgetfpregs): Use target_fetch_registers.
(ps_lsetregs, ps_lsetfpregs): Use target_store_registers.
(solaris_pid_to_str): Remove check for libthread_db initialization
failing.
(sol_find_new_threads): Remove check for libthread_db
initialization failing, or for an invalid inferior_ptid. Adjust
to use find_target_beneath.
(sol_core_open, sol_core_close, sol_core_detach,
sol_core_files_info, sol_find_memory_regions,
sol_make_note_section, ignore): Delete.
(init_sol_thread_ops): Make it a thread_stratum target. Remove
unneeded callback settings.
(init_sol_core_ops): Delete.
(_initialize_sol_thread): No longer call init_sol_core_ops, set
procfs_suppress_run, or hack with core_ops.
* target.h (struct target_ops): Add a target_ops * parameter to
to_resume, to_fetch_registers, to_store_registers, to_thread_alive
and to_find_new_threads.
(target_fetch_registers, target_store_registers)
(target_thread_alive, target_find_new_threads): Redeclare as
function.
* target.c (update_current_target): Do not inherit or de_fault
to_resume, to_fetch_registers, to_store_registers,
to_thread_alive, to_find_new_threads.
(target_resume): Adjust.
(target_thread_alive, target_find_new_threads): New.
(debug_to_resume, debug_to_fetch_registers): Delete.
(target_fetch_registers): New.
(debug_to_store_registers): Delete.
(target_store_registers): New.
(debug_to_thread_alive, debug_to_find_new_threads): Delete.
(setup_target_debug): Adjust.
* gdbcore.h (core_ops): Delete declaration.
* inf-ptrace.c, linux-nat.c, remote.c, amd64-linux-nat.c,
inf-child.c, linux-thread-db.c, bsd-uthread.c, inf-ttrace.c,
i386-sol2-tdep.c, darwin-nat.c, gnu-nat.c, go32-nat.c,
hpux-thread.c, i386-linux-nat.c, i386fbsd-nat.c, monitor.c,
nto-procfs.c, remote-m32r-sdi.c, remote-mips.c, windows-nat.c,
alphabsd-nat.c, amd64bsd-nat.c, arm-linux-nat.c, armnbsd-nat.c,
bsd-kvm.c, hppa-hpux-nat.c, hppa-linux-nat.c, hppabsd-nat.c,
hppanbsd-nat.c, i386-darwin-nat.c, i386bsd-nat.c,
ia64-linux-nat.c, m32r-linux-nat.c, m68kbsd-nat.c,
m68klinux-nat.c, m88kbsd-nat.c, mips-linux-nat.c,
mips64obsd-nat.c, mipsnbsd-nat.c, ppc-linux-nat.c, ppcnbsd-nat.c,
ppcobsd-nat.c, remote-sim.c, rs6000-nat.c, s390-nat.c,
shnbsd-nat.c, sparc-nat.c, sparc-nat.h, spu-linux-nat.c,
vaxbsd-nat.c, xtensa-linux-nat.c: Adjust to target_ops changes.
* gdbarch.sh (core_pid_to_str): New gdbarch callback.
* gdbarch.h, gdbarch.c: Regenerate.
* sol2-tdep.c: Include "inferior.h".
(sol2_core_pid_to_str): New.
* sol2-tdep.h (sol2_core_pid_to_str): Declare.
* amd64-sol2-tdep.c (amd64_sol2_init_abi): Set it.
* sparc-sol2-tdep.c (sparc32_sol2_init_abi): Set it.
* sparc64-sol2-tdep.c (sparc64_sol2_init_abi): Set it.
* i386-sol2-tdep.c (i386_sol2_init_abi): Set it.
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(frame_unwind_caller_id): ... this. All callers updated.
(frame_pc_unwind): Renamed to ...
(frame_unwind_caller_pc): ... this. All callers updated.
* frame.h: Document frame_unwind_caller_WHAT functions.
(frame_unwind_id): Renamed to ...
(frame_unwind_caller_id): ... this.
(frame_pc_unwind): Renamed to ...
(frame_unwind_caller_pc): ... this.
* hppa-tdep.c (hppa_find_unwind_entry_in_block): Correct comment.
* stack.c (parse_frame_specification_1): Do not rely on
frame_unwind_id.
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Switch the license of all .h files to GPLv3.
Switch the license of all .cc files to GPLv3.
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* amd64-sol2-tdep.c: Include "sol2-tdep.h".
(amd64_sol2_init_abi): Set skip_solib_resolver.
* i386-sol2-tdep.c: Include "sol2-tdep.h".
(i386_sol2_init_abi): Set skip_solib_resolver.
* sparc-sol2-tdep.c: Include "sol2-tdep.h".
(sparc32_sol2_init_abi): Set skip_solib_resolver.
* sparc64-sol2-tdep.c: Include "sol2-tdep.h".
(sparc64_sol2_init_abi): Set skip_solib_resolver.
* Makefile.in (sol2_tdep_h): New variable.
(ALLDEPFILES): Add sol2-tdep.c.
(sol2-tdep.o): New target.
(amd64-sol2-tdep.o, i386-sol2-tdep.o, sparc-sol2-tdep.o)
(sparc64-sol2-tdep.o): Update dependencies
* config/i386/i386sol2.mt (TDEPFILES): Add sol2-tdep.o.
* config/i386/sol2-64.mt (TDEPFILES): Add sol2-tdep.o.
* config/sparc/sol2.mt (TDEPFILES): Add sol2-tdep.o.
* config/sparc/sol2-64.mt (TDEPFILES): Add sol2-tdep.o.
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