jump pads). */
static int stabilizing_threads;
-static void linux_resume_one_lwp (struct lwp_info *lwp,
- int step, int signal, siginfo_t *info);
-static void stop_all_lwps (int suspend, struct lwp_info *except);
-static void unstop_all_lwps (int unsuspend, struct lwp_info *except);
static void unsuspend_all_lwps (struct lwp_info *except);
-static int linux_wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid,
- int *wstat, int options);
-static int linux_wait_for_event (ptid_t ptid, int *wstat, int options);
-static struct lwp_info *add_lwp (ptid_t ptid);
static void mark_lwp_dead (struct lwp_info *lwp, int wstat);
static int lwp_is_marked_dead (struct lwp_info *lwp);
-static void proceed_all_lwps (void);
-static int finish_step_over (struct lwp_info *lwp);
static int kill_lwp (unsigned long lwpid, int signo);
static void enqueue_pending_signal (struct lwp_info *lwp, int signal, siginfo_t *info);
-static void complete_ongoing_step_over (void);
static int linux_low_ptrace_options (int attached);
static int check_ptrace_stopped_lwp_gone (struct lwp_info *lp);
-static void proceed_one_lwp (thread_info *thread, lwp_info *except);
/* When the event-loop is doing a step-over, this points at the thread
being stepped. */
ptid_t step_over_bkpt;
-/* True if the low target can hardware single-step. */
-
-static int
-can_hardware_single_step (void)
+bool
+linux_process_target::low_supports_breakpoints ()
{
- if (the_low_target.supports_hardware_single_step != NULL)
- return the_low_target.supports_hardware_single_step ();
- else
- return 0;
+ return false;
}
-/* True if the low target can software single-step. Such targets
- implement the GET_NEXT_PCS callback. */
-
-static int
-can_software_single_step (void)
+CORE_ADDR
+linux_process_target::low_get_pc (regcache *regcache)
{
- return (the_low_target.get_next_pcs != NULL);
+ return 0;
}
-/* True if the low target supports memory breakpoints. If so, we'll
- have a GET_PC implementation. */
-
-static int
-supports_breakpoints (void)
+void
+linux_process_target::low_set_pc (regcache *regcache, CORE_ADDR newpc)
{
- return (the_low_target.get_pc != NULL);
+ gdb_assert_not_reached ("linux target op low_set_pc is not implemented");
}
-/* Returns true if this target can support fast tracepoints. This
- does not mean that the in-process agent has been loaded in the
- inferior. */
+std::vector<CORE_ADDR>
+linux_process_target::low_get_next_pcs (regcache *regcache)
+{
+ gdb_assert_not_reached ("linux target op low_get_next_pcs is not "
+ "implemented");
+}
-static int
-supports_fast_tracepoints (void)
+int
+linux_process_target::low_decr_pc_after_break ()
{
- return the_low_target.install_fast_tracepoint_jump_pad != NULL;
+ return 0;
}
/* True if LWP is stopped in its stepping range. */
#define target_is_async_p() (linux_event_pipe[0] != -1)
static void send_sigstop (struct lwp_info *lwp);
-static void wait_for_sigstop (void);
/* Return non-zero if HEADER is a 64-bit ELF file. */
return elf_64_file_p (file, machine);
}
-static void
-delete_lwp (struct lwp_info *lwp)
+void
+linux_process_target::delete_lwp (lwp_info *lwp)
{
struct thread_info *thr = get_lwp_thread (lwp);
remove_thread (thr);
- if (the_low_target.delete_thread != NULL)
- the_low_target.delete_thread (lwp->arch_private);
- else
- gdb_assert (lwp->arch_private == NULL);
+ low_delete_thread (lwp->arch_private);
free (lwp);
}
-/* Add a process to the common process list, and set its private
- data. */
+void
+linux_process_target::low_delete_thread (arch_lwp_info *info)
+{
+ /* Default implementation should be overridden if architecture-specific
+ info is being used. */
+ gdb_assert (info == nullptr);
+}
-static struct process_info *
-linux_add_process (int pid, int attached)
+process_info *
+linux_process_target::add_linux_process (int pid, int attached)
{
struct process_info *proc;
proc = add_process (pid, attached);
proc->priv = XCNEW (struct process_info_private);
- if (the_low_target.new_process != NULL)
- proc->priv->arch_private = the_low_target.new_process ();
+ proc->priv->arch_private = low_new_process ();
return proc;
}
-static CORE_ADDR get_pc (struct lwp_info *lwp);
-
-/* Call the target arch_setup function on the current thread. */
+arch_process_info *
+linux_process_target::low_new_process ()
+{
+ return nullptr;
+}
-static void
-linux_arch_setup (void)
+void
+linux_process_target::low_delete_process (arch_process_info *info)
{
- the_low_target.arch_setup ();
+ /* Default implementation must be overridden if architecture-specific
+ info exists. */
+ gdb_assert (info == nullptr);
}
-/* Call the target arch_setup function on THREAD. */
+void
+linux_process_target::low_new_fork (process_info *parent, process_info *child)
+{
+ /* Nop. */
+}
-static void
-linux_arch_setup_thread (struct thread_info *thread)
+void
+linux_process_target::arch_setup_thread (thread_info *thread)
{
struct thread_info *saved_thread;
saved_thread = current_thread;
current_thread = thread;
- linux_arch_setup ();
+ low_arch_setup ();
current_thread = saved_thread;
}
-/* Handle a GNU/Linux extended wait response. If we see a clone,
- fork, or vfork event, we need to add the new LWP to our list
- (and return 0 so as not to report the trap to higher layers).
- If we see an exec event, we will modify ORIG_EVENT_LWP to point
- to a new LWP representing the new program. */
-
-static int
-handle_extended_wait (struct lwp_info **orig_event_lwp, int wstat)
+int
+linux_process_target::handle_extended_wait (lwp_info **orig_event_lwp,
+ int wstat)
{
client_state &cs = get_client_state ();
struct lwp_info *event_lwp = *orig_event_lwp;
will be detached, since we will need the process object and the
breakpoints to remove any breakpoints from memory when we
detach, and the client side will access registers. */
- child_proc = linux_add_process (new_pid, 0);
+ child_proc = add_linux_process (new_pid, 0);
gdb_assert (child_proc != NULL);
child_lwp = add_lwp (ptid);
gdb_assert (child_lwp != NULL);
child_proc->attached = parent_proc->attached;
if (event_lwp->bp_reinsert != 0
- && can_software_single_step ()
+ && supports_software_single_step ()
&& event == PTRACE_EVENT_VFORK)
{
/* If we leave single-step breakpoints there, child will
child_proc->tdesc = tdesc;
/* Clone arch-specific process data. */
- if (the_low_target.new_fork != NULL)
- the_low_target.new_fork (parent_proc, child_proc);
+ low_new_fork (parent_proc, child_proc);
/* Save fork info in the parent thread. */
if (event == PTRACE_EVENT_FORK)
In case of vfork, we'll reinsert them back once vforked
child is done. */
if (event_lwp->bp_reinsert != 0
- && can_software_single_step ())
+ && supports_software_single_step ())
{
/* The child process is forked and stopped, so it is safe
to access its memory without stopping all other threads
new_lwp = add_lwp (ptid);
/* Either we're going to immediately resume the new thread
- or leave it stopped. linux_resume_one_lwp is a nop if it
+ or leave it stopped. resume_one_lwp is a nop if it
thinks the thread is currently running, so set this first
- before calling linux_resume_one_lwp. */
+ before calling resume_one_lwp. */
new_lwp->stopped = 1;
/* If we're suspending all threads, leave this one suspended
{
event_lwp->waitstatus.kind = TARGET_WAITKIND_VFORK_DONE;
- if (event_lwp->bp_reinsert != 0 && can_software_single_step ())
+ if (event_lwp->bp_reinsert != 0 && supports_software_single_step ())
{
reinsert_single_step_breakpoints (event_thr);
syscalls_to_catch = std::move (proc->syscalls_to_catch);
/* Delete the execing process and all its threads. */
- the_target->pt->mourn (proc);
+ mourn (proc);
current_thread = NULL;
/* Create a new process/lwp/thread. */
- proc = linux_add_process (event_pid, 0);
+ proc = add_linux_process (event_pid, 0);
event_lwp = add_lwp (event_ptid);
event_thr = get_lwp_thread (event_lwp);
gdb_assert (current_thread == event_thr);
- linux_arch_setup_thread (event_thr);
+ arch_setup_thread (event_thr);
/* Set the event status. */
event_lwp->waitstatus.kind = TARGET_WAITKIND_EXECD;
internal_error (__FILE__, __LINE__, _("unknown ptrace event %d"), event);
}
-/* Return the PC as read from the regcache of LWP, without any
- adjustment. */
-
-static CORE_ADDR
-get_pc (struct lwp_info *lwp)
+CORE_ADDR
+linux_process_target::get_pc (lwp_info *lwp)
{
struct thread_info *saved_thread;
struct regcache *regcache;
CORE_ADDR pc;
- if (the_low_target.get_pc == NULL)
+ if (!low_supports_breakpoints ())
return 0;
saved_thread = current_thread;
current_thread = get_lwp_thread (lwp);
regcache = get_thread_regcache (current_thread, 1);
- pc = (*the_low_target.get_pc) (regcache);
+ pc = low_get_pc (regcache);
if (debug_threads)
debug_printf ("pc is 0x%lx\n", (long) pc);
return pc;
}
-/* This function should only be called if LWP got a SYSCALL_SIGTRAP.
- Fill *SYSNO with the syscall nr trapped. */
-
-static void
-get_syscall_trapinfo (struct lwp_info *lwp, int *sysno)
+void
+linux_process_target::get_syscall_trapinfo (lwp_info *lwp, int *sysno)
{
struct thread_info *saved_thread;
struct regcache *regcache;
- if (the_low_target.get_syscall_trapinfo == NULL)
- {
- /* If we cannot get the syscall trapinfo, report an unknown
- system call number. */
- *sysno = UNKNOWN_SYSCALL;
- return;
- }
-
saved_thread = current_thread;
current_thread = get_lwp_thread (lwp);
regcache = get_thread_regcache (current_thread, 1);
- (*the_low_target.get_syscall_trapinfo) (regcache, sysno);
+ low_get_syscall_trapinfo (regcache, sysno);
if (debug_threads)
debug_printf ("get_syscall_trapinfo sysno %d\n", *sysno);
current_thread = saved_thread;
}
-static int check_stopped_by_watchpoint (struct lwp_info *child);
-
-/* Called when the LWP stopped for a signal/trap. If it stopped for a
- trap check what caused it (breakpoint, watchpoint, trace, etc.),
- and save the result in the LWP's stop_reason field. If it stopped
- for a breakpoint, decrement the PC if necessary on the lwp's
- architecture. Returns true if we now have the LWP's stop PC. */
+void
+linux_process_target::low_get_syscall_trapinfo (regcache *regcache, int *sysno)
+{
+ /* By default, report an unknown system call number. */
+ *sysno = UNKNOWN_SYSCALL;
+}
-static int
-save_stop_reason (struct lwp_info *lwp)
+bool
+linux_process_target::save_stop_reason (lwp_info *lwp)
{
CORE_ADDR pc;
CORE_ADDR sw_breakpoint_pc;
siginfo_t siginfo;
#endif
- if (the_low_target.get_pc == NULL)
- return 0;
+ if (!low_supports_breakpoints ())
+ return false;
pc = get_pc (lwp);
- sw_breakpoint_pc = pc - the_low_target.decr_pc_after_break;
+ sw_breakpoint_pc = pc - low_decr_pc_after_break ();
/* breakpoint_at reads from the current thread. */
saved_thread = current_thread;
then the user inserts a breakpoint inside the range. In that
case we need to report the breakpoint PC. */
if ((!lwp->stepping || lwp->stop_pc == sw_breakpoint_pc)
- && (*the_low_target.breakpoint_at) (sw_breakpoint_pc))
+ && low_breakpoint_at (sw_breakpoint_pc))
lwp->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT;
if (hardware_breakpoint_inserted_here (pc))
{
struct regcache *regcache
= get_thread_regcache (current_thread, 1);
- (*the_low_target.set_pc) (regcache, sw_breakpoint_pc);
+ low_set_pc (regcache, sw_breakpoint_pc);
}
/* Update this so we record the correct stop PC below. */
lwp->stop_pc = pc;
current_thread = saved_thread;
- return 1;
+ return true;
}
-static struct lwp_info *
-add_lwp (ptid_t ptid)
+lwp_info *
+linux_process_target::add_lwp (ptid_t ptid)
{
struct lwp_info *lwp;
lwp->thread = add_thread (ptid, lwp);
- if (the_low_target.new_thread != NULL)
- the_low_target.new_thread (lwp);
+ low_new_thread (lwp);
return lwp;
}
+void
+linux_process_target::low_new_thread (lwp_info *info)
+{
+ /* Nop. */
+}
+
/* Callback to be used when calling fork_inferior, responsible for
actually initiating the tracing of the inferior. */
{
maybe_disable_address_space_randomization restore_personality
(cs.disable_randomization);
- std::string str_program_args = stringify_argv (program_args);
+ std::string str_program_args = construct_inferior_arguments (program_args);
pid = fork_inferior (program,
str_program_args.c_str (),
NULL, NULL, NULL, NULL);
}
- linux_add_process (pid, 0);
+ add_linux_process (pid, 0);
ptid = ptid_t (pid, pid, 0);
new_lwp = add_lwp (ptid);
{
struct lwp_info *lwp = get_thread_lwp (current_thread);
- linux_arch_setup ();
+ low_arch_setup ();
if (lwp->must_set_ptrace_flags)
{
}
}
-/* Attach to an inferior process. Returns 0 on success, ERRNO on
- error. */
-
int
-linux_attach_lwp (ptid_t ptid)
+linux_process_target::attach_lwp (ptid_t ptid)
{
struct lwp_info *new_lwp;
int lwpid = ptid.lwp ();
if (debug_threads)
debug_printf ("Found new lwp %d\n", lwpid);
- err = linux_attach_lwp (ptid);
+ err = the_linux_target->attach_lwp (ptid);
/* Be quiet if we simply raced with the thread exiting. EPERM
is returned if the thread's task still exists, and is marked
ptid_t ptid = ptid_t (pid, pid, 0);
int err;
- proc = linux_add_process (pid, 1);
+ proc = add_linux_process (pid, 1);
/* Attach to PID. We will check for other threads
soon. */
- err = linux_attach_lwp (ptid);
+ err = attach_lwp (ptid);
if (err != 0)
{
remove_process (proc);
int wstat, lwpid;
ptid_t pid_ptid = ptid_t (pid);
- lwpid = linux_wait_for_event_filtered (pid_ptid, pid_ptid,
- &wstat, __WALL);
+ lwpid = wait_for_event_filtered (pid_ptid, pid_ptid, &wstat, __WALL);
gdb_assert (lwpid > 0);
lwp = find_lwp_pid (ptid_t (lwpid));
- The loop is most likely unnecessary.
- - We don't use linux_wait_for_event as that could delete lwps
+ - We don't use wait_for_event as that could delete lwps
while we're iterating over them. We're not interested in
any pending status at this point, only in making sure all
wait status on the kernel side are collected until the
}
}
-/* Detach from LWP. */
-
-static void
-linux_detach_one_lwp (struct lwp_info *lwp)
+void
+linux_process_target::detach_one_lwp (lwp_info *lwp)
{
struct thread_info *thread = get_lwp_thread (lwp);
int sig;
regcache_invalidate_thread (thread);
/* Finally, let it resume. */
- if (the_low_target.prepare_to_resume != NULL)
- the_low_target.prepare_to_resume (lwp);
+ low_prepare_to_resume (lwp);
}
catch (const gdb_exception_error &ex)
{
delete_lwp (lwp);
}
-/* Callback for for_each_thread. Detaches from non-leader threads of a
- given process. */
-
-static void
-linux_detach_lwp_callback (thread_info *thread)
-{
- /* We don't actually detach from the thread group leader just yet.
- If the thread group exits, we must reap the zombie clone lwps
- before we're able to reap the leader. */
- if (thread->id.pid () == thread->id.lwp ())
- return;
-
- lwp_info *lwp = get_thread_lwp (thread);
- linux_detach_one_lwp (lwp);
-}
-
int
linux_process_target::detach (process_info *process)
{
#endif
/* Stabilize threads (move out of jump pads). */
- stabilize_threads ();
+ target_stabilize_threads ();
/* Detach from the clone lwps first. If the thread group exits just
while we're detaching, we must reap the clone lwps before we're
able to reap the leader. */
- for_each_thread (process->pid, linux_detach_lwp_callback);
+ for_each_thread (process->pid, [this] (thread_info *thread)
+ {
+ /* We don't actually detach from the thread group leader just yet.
+ If the thread group exits, we must reap the zombie clone lwps
+ before we're able to reap the leader. */
+ if (thread->id.pid () == thread->id.lwp ())
+ return;
+
+ lwp_info *lwp = get_thread_lwp (thread);
+ detach_one_lwp (lwp);
+ });
main_lwp = find_lwp_pid (ptid_t (process->pid));
- linux_detach_one_lwp (main_lwp);
+ detach_one_lwp (main_lwp);
mourn (process);
thread_db_mourn (process);
#endif
- for_each_thread (process->pid, [] (thread_info *thread)
+ for_each_thread (process->pid, [this] (thread_info *thread)
{
delete_lwp (get_thread_lwp (thread));
});
/* Freeing all private data. */
priv = process->priv;
- if (the_low_target.delete_process != NULL)
- the_low_target.delete_process (priv->arch_private);
- else
- gdb_assert (priv->arch_private == NULL);
+ low_delete_process (priv->arch_private);
free (priv);
process->priv = NULL;
return 0;
}
-/* Return 1 if this lwp still has an interesting status pending. If
- not (e.g., it had stopped for a breakpoint that is gone), return
- false. */
-
-static int
-thread_still_has_status_pending_p (struct thread_info *thread)
+bool
+linux_process_target::thread_still_has_status_pending (thread_info *thread)
{
struct lwp_info *lp = get_thread_lwp (thread);
#if !USE_SIGTRAP_SIGINFO
else if (lp->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT
- && !(*the_low_target.breakpoint_at) (pc))
+ && !low_breakpoint_at (pc))
{
if (debug_threads)
debug_printf ("previous SW breakpoint of %ld gone\n",
return 0;
}
-/* Return true if this lwp has an interesting status pending. */
-static bool
-status_pending_p_callback (thread_info *thread, ptid_t ptid)
+bool
+linux_process_target::status_pending_p_callback (thread_info *thread,
+ ptid_t ptid)
{
struct lwp_info *lp = get_thread_lwp (thread);
return 0;
if (lp->status_pending_p
- && !thread_still_has_status_pending_p (thread))
+ && !thread_still_has_status_pending (thread))
{
- linux_resume_one_lwp (lp, lp->stepping, GDB_SIGNAL_0, NULL);
+ resume_one_lwp (lp, lp->stepping, GDB_SIGNAL_0, NULL);
return 0;
}
return get_thread_lwp (thread);
}
-/* Detect zombie thread group leaders, and "exit" them. We can't reap
- their exits until all other threads in the group have exited. */
-
-static void
-check_zombie_leaders (void)
+void
+linux_process_target::check_zombie_leaders ()
{
- for_each_process ([] (process_info *proc) {
+ for_each_process ([this] (process_info *proc) {
pid_t leader_pid = pid_of (proc);
struct lwp_info *leader_lp;
return 0;
}
-/* Convenience wrapper. Returns information about LWP's fast tracepoint
- collection status. */
-
-static fast_tpoint_collect_result
-linux_fast_tracepoint_collecting (struct lwp_info *lwp,
- struct fast_tpoint_collect_status *status)
+fast_tpoint_collect_result
+linux_process_target::linux_fast_tracepoint_collecting
+ (lwp_info *lwp, fast_tpoint_collect_status *status)
{
CORE_ADDR thread_area;
struct thread_info *thread = get_lwp_thread (lwp);
- if (the_low_target.get_thread_area == NULL)
- return fast_tpoint_collect_result::not_collecting;
-
/* Get the thread area address. This is used to recognize which
thread is which when tracing with the in-process agent library.
We don't read anything from the address, and treat it as opaque;
it's the address itself that we assume is unique per-thread. */
- if ((*the_low_target.get_thread_area) (lwpid_of (thread), &thread_area) == -1)
+ if (low_get_thread_area (lwpid_of (thread), &thread_area) == -1)
return fast_tpoint_collect_result::not_collecting;
return fast_tracepoint_collecting (thread_area, lwp->stop_pc, status);
}
-/* The reason we resume in the caller, is because we want to be able
- to pass lwp->status_pending as WSTAT, and we need to clear
- status_pending_p before resuming, otherwise, linux_resume_one_lwp
- refuses to resume. */
+int
+linux_process_target::low_get_thread_area (int lwpid, CORE_ADDR *addrp)
+{
+ return -1;
+}
-static int
-maybe_move_out_of_jump_pad (struct lwp_info *lwp, int *wstat)
+bool
+linux_process_target::maybe_move_out_of_jump_pad (lwp_info *lwp, int *wstat)
{
struct thread_info *saved_thread;
lwpid_of (current_thread));
current_thread = saved_thread;
- return 1;
+ return true;
}
}
else
}
regcache = get_thread_regcache (current_thread, 1);
- (*the_low_target.set_pc) (regcache, status.tpoint_addr);
+ low_set_pc (regcache, status.tpoint_addr);
lwp->stop_pc = status.tpoint_addr;
/* Cancel any fast tracepoint lock this thread was
lwpid_of (current_thread));
current_thread = saved_thread;
- return 0;
+ return false;
}
/* Enqueue one signal in the "signals to report later when out of the
return 0;
}
-/* Fetch the possibly triggered data watchpoint info and store it in
- CHILD.
-
- On some archs, like x86, that use debug registers to set
- watchpoints, it's possible that the way to know which watched
- address trapped, is to check the register that is used to select
- which address to watch. Problem is, between setting the watchpoint
- and reading back which data address trapped, the user may change
- the set of watchpoints, and, as a consequence, GDB changes the
- debug registers in the inferior. To avoid reading back a stale
- stopped-data-address when that happens, we cache in LP the fact
- that a watchpoint trapped, and the corresponding data address, as
- soon as we see CHILD stop with a SIGTRAP. If GDB changes the debug
- registers meanwhile, we have the cached data we can rely on. */
-
-static int
-check_stopped_by_watchpoint (struct lwp_info *child)
+bool
+linux_process_target::check_stopped_by_watchpoint (lwp_info *child)
{
- if (the_low_target.stopped_by_watchpoint != NULL)
- {
- struct thread_info *saved_thread;
+ struct thread_info *saved_thread = current_thread;
+ current_thread = get_lwp_thread (child);
- saved_thread = current_thread;
- current_thread = get_lwp_thread (child);
+ if (low_stopped_by_watchpoint ())
+ {
+ child->stop_reason = TARGET_STOPPED_BY_WATCHPOINT;
+ child->stopped_data_address = low_stopped_data_address ();
+ }
- if (the_low_target.stopped_by_watchpoint ())
- {
- child->stop_reason = TARGET_STOPPED_BY_WATCHPOINT;
+ current_thread = saved_thread;
- if (the_low_target.stopped_data_address != NULL)
- child->stopped_data_address
- = the_low_target.stopped_data_address ();
- else
- child->stopped_data_address = 0;
- }
+ return child->stop_reason == TARGET_STOPPED_BY_WATCHPOINT;
+}
- current_thread = saved_thread;
- }
+bool
+linux_process_target::low_stopped_by_watchpoint ()
+{
+ return false;
+}
- return child->stop_reason == TARGET_STOPPED_BY_WATCHPOINT;
+CORE_ADDR
+linux_process_target::low_stopped_data_address ()
+{
+ return 0;
}
/* Return the ptrace options that we want to try to enable. */
return options;
}
-/* Do low-level handling of the event, and check if we should go on
- and pass it to caller code. Return the affected lwp if we are, or
- NULL otherwise. */
-
-static struct lwp_info *
-linux_low_filter_event (int lwpid, int wstat)
+lwp_info *
+linux_process_target::filter_event (int lwpid, int wstat)
{
client_state &cs = get_client_state ();
struct lwp_info *child;
/* This needs to happen after we have attached to the
inferior and it is stopped for the first time, but
before we access any inferior registers. */
- linux_arch_setup_thread (thread);
+ arch_setup_thread (thread);
}
else
{
child->stepping ? "step" : "continue",
target_pid_to_str (ptid_of (thread)));
- linux_resume_one_lwp (child, child->stepping, 0, NULL);
+ resume_one_lwp (child, child->stepping, 0, NULL);
return NULL;
}
}
return child;
}
-/* Return true if THREAD is doing hardware single step. */
-
-static int
-maybe_hw_step (struct thread_info *thread)
+bool
+linux_process_target::maybe_hw_step (thread_info *thread)
{
- if (can_hardware_single_step ())
- return 1;
+ if (supports_hardware_single_step ())
+ return true;
else
{
/* GDBserver must insert single-step breakpoint for software
single step. */
gdb_assert (has_single_step_breakpoints (thread));
- return 0;
+ return false;
}
}
-/* Resume LWPs that are currently stopped without any pending status
- to report, but are resumed from the core's perspective. */
-
-static void
-resume_stopped_resumed_lwps (thread_info *thread)
+void
+linux_process_target::resume_stopped_resumed_lwps (thread_info *thread)
{
struct lwp_info *lp = get_thread_lwp (thread);
paddress (lp->stop_pc),
step);
- linux_resume_one_lwp (lp, step, GDB_SIGNAL_0, NULL);
+ resume_one_lwp (lp, step, GDB_SIGNAL_0, NULL);
}
}
-/* Wait for an event from child(ren) WAIT_PTID, and return any that
- match FILTER_PTID (leaving others pending). The PTIDs can be:
- minus_one_ptid, to specify any child; a pid PTID, specifying all
- lwps of a thread group; or a PTID representing a single lwp. Store
- the stop status through the status pointer WSTAT. OPTIONS is
- passed to the waitpid call. Return 0 if no event was found and
- OPTIONS contains WNOHANG. Return -1 if no unwaited-for children
- was found. Return the PID of the stopped child otherwise. */
-
-static int
-linux_wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid,
- int *wstatp, int options)
+int
+linux_process_target::wait_for_event_filtered (ptid_t wait_ptid,
+ ptid_t filter_ptid,
+ int *wstatp, int options)
{
struct thread_info *event_thread;
struct lwp_info *event_child, *requested_child;
&requested_child->status_pending);
requested_child->status_pending_p = 0;
requested_child->status_pending = 0;
- linux_resume_one_lwp (requested_child, 0, 0, NULL);
+ resume_one_lwp (requested_child, 0, 0, NULL);
}
if (requested_child->suspended
/* Filter all events. IOW, leave all events pending. We'll
randomly select an event LWP out of all that have events
below. */
- linux_low_filter_event (ret, *wstatp);
+ filter_event (ret, *wstatp);
/* Retry until nothing comes out of waitpid. A single
SIGCHLD can indicate more than one child stopped. */
continue;
/* Now that we've pulled all events out of the kernel, resume
LWPs that don't have an interesting event to report. */
if (stopping_threads == NOT_STOPPING_THREADS)
- for_each_thread (resume_stopped_resumed_lwps);
+ for_each_thread ([this] (thread_info *thread)
+ {
+ resume_stopped_resumed_lwps (thread);
+ });
/* ... and find an LWP with a status to report to the core, if
any. */
return lwpid_of (event_thread);
}
-/* Wait for an event from child(ren) PTID. PTIDs can be:
- minus_one_ptid, to specify any child; a pid PTID, specifying all
- lwps of a thread group; or a PTID representing a single lwp. Store
- the stop status through the status pointer WSTAT. OPTIONS is
- passed to the waitpid call. Return 0 if no event was found and
- OPTIONS contains WNOHANG. Return -1 if no unwaited-for children
- was found. Return the PID of the stopped child otherwise. */
-
-static int
-linux_wait_for_event (ptid_t ptid, int *wstatp, int options)
+int
+linux_process_target::wait_for_event (ptid_t ptid, int *wstatp, int options)
{
- return linux_wait_for_event_filtered (ptid, ptid, wstatp, options);
+ return wait_for_event_filtered (ptid, ptid, wstatp, options);
}
/* Select one LWP out of those that have events pending. */
});
}
-static void move_out_of_jump_pad_callback (thread_info *thread);
-static bool stuck_in_jump_pad_callback (thread_info *thread);
static bool lwp_running (thread_info *thread);
-static ptid_t linux_wait_1 (ptid_t ptid,
- struct target_waitstatus *ourstatus,
- int target_options);
/* Stabilize threads (move out of jump pads).
since for something else in the new run, the thread would now
execute the wrong / random instructions. */
-static void
-linux_stabilize_threads (void)
+void
+linux_process_target::stabilize_threads ()
{
- thread_info *thread_stuck = find_thread (stuck_in_jump_pad_callback);
+ thread_info *thread_stuck = find_thread ([this] (thread_info *thread)
+ {
+ return stuck_in_jump_pad (thread);
+ });
if (thread_stuck != NULL)
{
stabilizing_threads = 1;
/* Kick 'em all. */
- for_each_thread (move_out_of_jump_pad_callback);
+ for_each_thread ([this] (thread_info *thread)
+ {
+ move_out_of_jump_pad (thread);
+ });
/* Loop until all are stopped out of the jump pads. */
while (find_thread (lwp_running) != NULL)
/* Note that we go through the full wait even loop. While
moving threads out of jump pad, we need to be able to step
over internal breakpoints and such. */
- linux_wait_1 (minus_one_ptid, &ourstatus, 0);
+ wait_1 (minus_one_ptid, &ourstatus, 0);
if (ourstatus.kind == TARGET_WAITKIND_STOPPED)
{
if (debug_threads)
{
- thread_stuck = find_thread (stuck_in_jump_pad_callback);
+ thread_stuck = find_thread ([this] (thread_info *thread)
+ {
+ return stuck_in_jump_pad (thread);
+ });
if (thread_stuck != NULL)
debug_printf ("couldn't stabilize, LWP %ld got stuck in jump pad\n",
return null_ptid;
}
-/* Convenience function that is called when the kernel reports an exit
- event. This decides whether to report the event to GDB as a
- process exit event, a thread exit event, or to suppress the
- event. */
-
-static ptid_t
-filter_exit_event (struct lwp_info *event_child,
- struct target_waitstatus *ourstatus)
+ptid_t
+linux_process_target::filter_exit_event (lwp_info *event_child,
+ target_waitstatus *ourstatus)
{
client_state &cs = get_client_state ();
struct thread_info *thread = get_lwp_thread (event_child);
return !proc->syscalls_to_catch.empty ();
}
-/* Returns 1 if GDB is interested in the event_child syscall.
- Only to be called when stopped reason is SYSCALL_SIGTRAP. */
-
-static int
-gdb_catch_this_syscall_p (struct lwp_info *event_child)
+bool
+linux_process_target::gdb_catch_this_syscall (lwp_info *event_child)
{
int sysno;
struct thread_info *thread = get_lwp_thread (event_child);
struct process_info *proc = get_thread_process (thread);
if (proc->syscalls_to_catch.empty ())
- return 0;
+ return false;
if (proc->syscalls_to_catch[0] == ANY_SYSCALL)
- return 1;
+ return true;
get_syscall_trapinfo (event_child, &sysno);
for (int iter : proc->syscalls_to_catch)
if (iter == sysno)
- return 1;
+ return true;
- return 0;
+ return false;
}
-/* Wait for process, returns status. */
-
-static ptid_t
-linux_wait_1 (ptid_t ptid,
- struct target_waitstatus *ourstatus, int target_options)
+ptid_t
+linux_process_target::wait_1 (ptid_t ptid, target_waitstatus *ourstatus,
+ int target_options)
{
client_state &cs = get_client_state ();
int w;
if (debug_threads)
{
debug_enter ();
- debug_printf ("linux_wait_1: [%s]\n", target_pid_to_str (ptid));
+ debug_printf ("wait_1: [%s]\n", target_pid_to_str (ptid));
}
/* Translate generic target options into linux options. */
any_resumed = 0;
if (step_over_bkpt == null_ptid)
- pid = linux_wait_for_event (ptid, &w, options);
+ pid = wait_for_event (ptid, &w, options);
else
{
if (debug_threads)
debug_printf ("step_over_bkpt set [%s], doing a blocking wait\n",
target_pid_to_str (step_over_bkpt));
- pid = linux_wait_for_event (step_over_bkpt, &w, options & ~WNOHANG);
+ pid = wait_for_event (step_over_bkpt, &w, options & ~WNOHANG);
}
if (pid == 0 || (pid == -1 && !any_resumed))
if (debug_threads)
{
- debug_printf ("linux_wait_1 ret = null_ptid, "
+ debug_printf ("wait_1 ret = null_ptid, "
"TARGET_WAITKIND_IGNORE\n");
debug_exit ();
}
{
if (debug_threads)
{
- debug_printf ("linux_wait_1 ret = null_ptid, "
+ debug_printf ("wait_1 ret = null_ptid, "
"TARGET_WAITKIND_NO_RESUMED\n");
debug_exit ();
}
event_child = get_thread_lwp (current_thread);
- /* linux_wait_for_event only returns an exit status for the last
+ /* wait_for_event only returns an exit status for the last
child of a process. Report it. */
if (WIFEXITED (w) || WIFSIGNALED (w))
{
if (debug_threads)
{
- debug_printf ("linux_wait_1 ret = %s, exited with "
+ debug_printf ("wait_1 ret = %s, exited with "
"retcode %d\n",
target_pid_to_str (ptid_of (current_thread)),
WEXITSTATUS (w));
if (debug_threads)
{
- debug_printf ("linux_wait_1 ret = %s, terminated with "
+ debug_printf ("wait_1 ret = %s, terminated with "
"signal %d\n",
target_pid_to_str (ptid_of (current_thread)),
WTERMSIG (w));
int breakpoint_kind = 0;
CORE_ADDR stop_pc = event_child->stop_pc;
- breakpoint_kind =
- the_target->breakpoint_kind_from_current_state (&stop_pc);
- the_target->sw_breakpoint_from_kind (breakpoint_kind, &increment_pc);
+ breakpoint_kind = breakpoint_kind_from_current_state (&stop_pc);
+ sw_breakpoint_from_kind (breakpoint_kind, &increment_pc);
if (debug_threads)
{
= get_thread_regcache (current_thread, 1);
event_child->stop_pc += increment_pc;
- (*the_low_target.set_pc) (regcache, event_child->stop_pc);
+ low_set_pc (regcache, event_child->stop_pc);
- if (!(*the_low_target.breakpoint_at) (event_child->stop_pc))
+ if (!low_breakpoint_at (event_child->stop_pc))
event_child->stop_reason = TARGET_STOPPED_BY_NO_REASON;
}
}
not support internal breakpoints at all, we also report the
SIGTRAP without further processing; it's of no concern to us. */
maybe_internal_trap
- = (supports_breakpoints ()
+ = (low_supports_breakpoints ()
&& (WSTOPSIG (w) == SIGTRAP
|| ((WSTOPSIG (w) == SIGILL
|| WSTOPSIG (w) == SIGSEGV)
- && (*the_low_target.breakpoint_at) (event_child->stop_pc))));
+ && low_breakpoint_at (event_child->stop_pc))));
if (maybe_internal_trap)
{
debug_printf ("Signal %d for LWP %ld deferred (in jump pad)\n",
WSTOPSIG (w), lwpid_of (current_thread));
- linux_resume_one_lwp (event_child, 0, 0, NULL);
+ resume_one_lwp (event_child, 0, 0, NULL);
if (debug_threads)
debug_exit ();
if (debug_threads)
{
- debug_printf ("linux_wait_1 ret = %s, stopped "
+ debug_printf ("wait_1 ret = %s, stopped "
"while stabilizing threads\n",
target_pid_to_str (ptid_of (current_thread)));
debug_exit ();
/* Check if GDB is interested in this syscall. */
if (WIFSTOPPED (w)
&& WSTOPSIG (w) == SYSCALL_SIGTRAP
- && !gdb_catch_this_syscall_p (event_child))
+ && !gdb_catch_this_syscall (event_child))
{
if (debug_threads)
{
lwpid_of (current_thread));
}
- linux_resume_one_lwp (event_child, event_child->stepping,
- 0, NULL);
+ resume_one_lwp (event_child, event_child->stepping, 0, NULL);
if (debug_threads)
debug_exit ();
}
else
{
- linux_resume_one_lwp (event_child, event_child->stepping,
- WSTOPSIG (w), info_p);
+ resume_one_lwp (event_child, event_child->stepping,
+ WSTOPSIG (w), info_p);
}
if (debug_threads)
decr_pc_after_break adjustment to the inferior's regcache
ourselves. */
- if (the_low_target.set_pc != NULL)
+ if (low_supports_breakpoints ())
{
struct regcache *regcache
= get_thread_regcache (current_thread, 1);
- (*the_low_target.set_pc) (regcache, event_child->stop_pc);
+ low_set_pc (regcache, event_child->stop_pc);
}
if (step_over_finished)
/* Remove the single-step breakpoints if any. Note that
there isn't single-step breakpoint if we finished stepping
over. */
- if (can_software_single_step ()
+ if (supports_software_single_step ()
&& has_single_step_breakpoints (current_thread))
{
stop_all_lwps (0, event_child);
/* Alright, we're going to report a stop. */
/* Remove single-step breakpoints. */
- if (can_software_single_step ())
+ if (supports_software_single_step ())
{
/* Remove single-step breakpoints or not. It it is true, stop all
lwps, so that other threads won't hit the breakpoint in the
/* Stabilize threads (move out of jump pads). */
if (!non_stop)
- stabilize_threads ();
+ target_stabilize_threads ();
}
else
{
if (event_child->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT
&& !cs.swbreak_feature)
{
- int decr_pc = the_low_target.decr_pc_after_break;
+ int decr_pc = low_decr_pc_after_break ();
if (decr_pc != 0)
{
struct regcache *regcache
= get_thread_regcache (current_thread, 1);
- (*the_low_target.set_pc) (regcache, event_child->stop_pc + decr_pc);
+ low_set_pc (regcache, event_child->stop_pc + decr_pc);
}
}
if (debug_threads)
{
- debug_printf ("linux_wait_1 ret = %s, %d, %d\n",
+ debug_printf ("wait_1 ret = %s, %d, %d\n",
target_pid_to_str (ptid_of (current_thread)),
ourstatus->kind, ourstatus->value.sig);
debug_exit ();
do
{
- event_ptid = linux_wait_1 (ptid, ourstatus, target_options);
+ event_ptid = wait_1 (ptid, ourstatus, target_options);
}
while ((target_options & TARGET_WNOHANG) == 0
&& event_ptid == null_ptid
|| WIFSIGNALED (lwp->status_pending)));
}
-/* Wait for all children to stop for the SIGSTOPs we just queued. */
-
-static void
-wait_for_sigstop (void)
+void
+linux_process_target::wait_for_sigstop ()
{
struct thread_info *saved_thread;
ptid_t saved_tid;
/* Passing NULL_PTID as filter indicates we want all events to be
left pending. Eventually this returns when there are no
unwaited-for children left. */
- ret = linux_wait_for_event_filtered (minus_one_ptid, null_ptid,
- &wstat, __WALL);
+ ret = wait_for_event_filtered (minus_one_ptid, null_ptid, &wstat, __WALL);
gdb_assert (ret == -1);
if (saved_thread == NULL || mythread_alive (saved_tid))
}
}
-/* Returns true if THREAD is stopped in a jump pad, and we can't
- move it out, because we need to report the stop event to GDB. For
- example, if the user puts a breakpoint in the jump pad, it's
- because she wants to debug it. */
-
-static bool
-stuck_in_jump_pad_callback (thread_info *thread)
+bool
+linux_process_target::stuck_in_jump_pad (thread_info *thread)
{
struct lwp_info *lwp = get_thread_lwp (thread);
!= fast_tpoint_collect_result::not_collecting));
}
-static void
-move_out_of_jump_pad_callback (thread_info *thread)
+void
+linux_process_target::move_out_of_jump_pad (thread_info *thread)
{
struct thread_info *saved_thread;
struct lwp_info *lwp = get_thread_lwp (thread);
WSTOPSIG (*wstat), lwpid_of (thread));
}
- linux_resume_one_lwp (lwp, 0, 0, NULL);
+ resume_one_lwp (lwp, 0, 0, NULL);
}
else
lwp_suspended_inc (lwp);
return !lwp->stopped;
}
-/* Stop all lwps that aren't stopped yet, except EXCEPT, if not NULL.
- If SUSPEND, then also increase the suspend count of every LWP,
- except EXCEPT. */
-
-static void
-stop_all_lwps (int suspend, struct lwp_info *except)
+void
+linux_process_target::stop_all_lwps (int suspend, lwp_info *except)
{
/* Should not be called recursively. */
gdb_assert (stopping_threads == NOT_STOPPING_THREADS);
lwp->pending_signals = p_sig;
}
-/* Install breakpoints for software single stepping. */
-
-static void
-install_software_single_step_breakpoints (struct lwp_info *lwp)
+void
+linux_process_target::install_software_single_step_breakpoints (lwp_info *lwp)
{
struct thread_info *thread = get_lwp_thread (lwp);
struct regcache *regcache = get_thread_regcache (thread, 1);
scoped_restore save_current_thread = make_scoped_restore (¤t_thread);
current_thread = thread;
- std::vector<CORE_ADDR> next_pcs = the_low_target.get_next_pcs (regcache);
+ std::vector<CORE_ADDR> next_pcs = low_get_next_pcs (regcache);
for (CORE_ADDR pc : next_pcs)
set_single_step_breakpoint (pc, current_ptid);
}
-/* Single step via hardware or software single step.
- Return 1 if hardware single stepping, 0 if software single stepping
- or can't single step. */
-
-static int
-single_step (struct lwp_info* lwp)
+int
+linux_process_target::single_step (lwp_info* lwp)
{
int step = 0;
- if (can_hardware_single_step ())
+ if (supports_hardware_single_step ())
{
step = 1;
}
- else if (can_software_single_step ())
+ else if (supports_software_single_step ())
{
install_software_single_step_breakpoints (lwp);
step = 0;
== fast_tpoint_collect_result::not_collecting);
}
-/* Resume execution of LWP. If STEP is nonzero, single-step it. If
- SIGNAL is nonzero, give it that signal. */
-
-static void
-linux_resume_one_lwp_throw (struct lwp_info *lwp,
- int step, int signal, siginfo_t *info)
+void
+linux_process_target::resume_one_lwp_throw (lwp_info *lwp, int step,
+ int signal, siginfo_t *info)
{
struct thread_info *thread = get_lwp_thread (lwp);
struct thread_info *saved_thread;
debug_printf (" pending reinsert at 0x%s\n",
paddress (lwp->bp_reinsert));
- if (can_hardware_single_step ())
+ if (supports_hardware_single_step ())
{
if (fast_tp_collecting == fast_tpoint_collect_result::not_collecting)
{
" single-stepping\n",
lwpid_of (thread));
- if (can_hardware_single_step ())
+ if (supports_hardware_single_step ())
step = 1;
else
{
step = single_step (lwp);
}
- if (proc->tdesc != NULL && the_low_target.get_pc != NULL)
+ if (proc->tdesc != NULL && low_supports_breakpoints ())
{
struct regcache *regcache = get_thread_regcache (current_thread, 1);
- lwp->stop_pc = (*the_low_target.get_pc) (regcache);
+ lwp->stop_pc = low_get_pc (regcache);
if (debug_threads)
{
lwpid_of (thread), step ? "step" : "continue", signal,
lwp->stop_expected ? "expected" : "not expected");
- if (the_low_target.prepare_to_resume != NULL)
- the_low_target.prepare_to_resume (lwp);
+ low_prepare_to_resume (lwp);
regcache_invalidate_thread (thread);
errno = 0;
lwp->stop_reason = TARGET_STOPPED_BY_NO_REASON;
}
+void
+linux_process_target::low_prepare_to_resume (lwp_info *lwp)
+{
+ /* Nop. */
+}
+
/* Called when we try to resume a stopped LWP and that errors out. If
the LWP is no longer in ptrace-stopped state (meaning it's zombie,
or about to become), discard the error, clear any pending status
return 0;
}
-/* Like linux_resume_one_lwp_throw, but no error is thrown if the LWP
- disappears while we try to resume it. */
-
-static void
-linux_resume_one_lwp (struct lwp_info *lwp,
- int step, int signal, siginfo_t *info)
+void
+linux_process_target::resume_one_lwp (lwp_info *lwp, int step, int signal,
+ siginfo_t *info)
{
try
{
- linux_resume_one_lwp_throw (lwp, step, signal, info);
+ resume_one_lwp_throw (lwp, step, signal, info);
}
catch (const gdb_exception_error &ex)
{
lwp->resume = NULL;
}
-/* find_thread callback for linux_resume. Return true if this lwp has an
- interesting status pending. */
-
-static bool
-resume_status_pending_p (thread_info *thread)
+bool
+linux_process_target::resume_status_pending (thread_info *thread)
{
struct lwp_info *lwp = get_thread_lwp (thread);
if (lwp->resume == NULL)
return false;
- return thread_still_has_status_pending_p (thread);
+ return thread_still_has_status_pending (thread);
}
-/* Return 1 if this lwp that GDB wants running is stopped at an
- internal breakpoint that we need to step over. It assumes that any
- required STOP_PC adjustment has already been propagated to the
- inferior's regcache. */
-
-static bool
-need_step_over_p (thread_info *thread)
+bool
+linux_process_target::thread_needs_step_over (thread_info *thread)
{
struct lwp_info *lwp = get_thread_lwp (thread);
struct thread_info *saved_thread;
/* On software single step target, resume the inferior with signal
rather than stepping over. */
- if (can_software_single_step ()
+ if (supports_software_single_step ()
&& lwp->pending_signals != NULL
&& lwp_signal_can_be_delivered (lwp))
{
return false;
}
-/* Start a step-over operation on LWP. When LWP stopped at a
- breakpoint, to make progress, we need to remove the breakpoint out
- of the way. If we let other threads run while we do that, they may
- pass by the breakpoint location and miss hitting it. To avoid
- that, a step-over momentarily stops all threads while LWP is
- single-stepped by either hardware or software while the breakpoint
- is temporarily uninserted from the inferior. When the single-step
- finishes, we reinsert the breakpoint, and let all threads that are
- supposed to be running, run again. */
-
-static int
-start_step_over (struct lwp_info *lwp)
+void
+linux_process_target::start_step_over (lwp_info *lwp)
{
struct thread_info *thread = get_lwp_thread (lwp);
struct thread_info *saved_thread;
current_thread = saved_thread;
- linux_resume_one_lwp (lwp, step, 0, NULL);
+ resume_one_lwp (lwp, step, 0, NULL);
/* Require next event from this LWP. */
step_over_bkpt = thread->id;
- return 1;
}
-/* Finish a step-over. Reinsert the breakpoint we had uninserted in
- start_step_over, if still there, and delete any single-step
- breakpoints we've set, on non hardware single-step targets. */
-
-static int
-finish_step_over (struct lwp_info *lwp)
+bool
+linux_process_target::finish_step_over (lwp_info *lwp)
{
if (lwp->bp_reinsert != 0)
{
and later not being able to explain it, because we were
stepping over a breakpoint, and we hold all threads but
LWP stopped while doing that. */
- if (!can_hardware_single_step ())
+ if (!supports_hardware_single_step ())
{
gdb_assert (has_single_step_breakpoints (current_thread));
delete_single_step_breakpoints (current_thread);
step_over_bkpt = null_ptid;
current_thread = saved_thread;
- return 1;
+ return true;
}
else
- return 0;
+ return false;
}
-/* If there's a step over in progress, wait until all threads stop
- (that is, until the stepping thread finishes its step), and
- unsuspend all lwps. The stepping thread ends with its status
- pending, which is processed later when we get back to processing
- events. */
-
-static void
-complete_ongoing_step_over (void)
+void
+linux_process_target::complete_ongoing_step_over ()
{
if (step_over_bkpt != null_ptid)
{
/* Passing NULL_PTID as filter indicates we want all events to
be left pending. Eventually this returns when there are no
unwaited-for children left. */
- ret = linux_wait_for_event_filtered (minus_one_ptid, null_ptid,
- &wstat, __WALL);
+ ret = wait_for_event_filtered (minus_one_ptid, null_ptid, &wstat,
+ __WALL);
gdb_assert (ret == -1);
lwp = find_lwp_pid (step_over_bkpt);
}
}
-/* This function is called once per thread. We check the thread's resume
- request, which will tell us whether to resume, step, or leave the thread
- stopped; and what signal, if any, it should be sent.
-
- For threads which we aren't explicitly told otherwise, we preserve
- the stepping flag; this is used for stepping over gdbserver-placed
- breakpoints.
-
- If pending_flags was set in any thread, we queue any needed
- signals, since we won't actually resume. We already have a pending
- event to report, so we don't need to preserve any step requests;
- they should be re-issued if necessary. */
-
-static void
-linux_resume_one_thread (thread_info *thread, bool leave_all_stopped)
+void
+linux_process_target::resume_one_thread (thread_info *thread,
+ bool leave_all_stopped)
{
struct lwp_info *lwp = get_thread_lwp (thread);
int leave_pending;
before considering to start a step-over (in all-stop). */
bool any_pending = false;
if (!non_stop)
- any_pending = find_thread (resume_status_pending_p) != NULL;
+ any_pending = find_thread ([this] (thread_info *thread)
+ {
+ return resume_status_pending (thread);
+ }) != nullptr;
/* If there is a thread which would otherwise be resumed, which is
stopped at a breakpoint that needs stepping over, then don't
other threads stopped, then resume all threads again. Make sure
to queue any signals that would otherwise be delivered or
queued. */
- if (!any_pending && supports_breakpoints ())
- need_step_over = find_thread (need_step_over_p);
+ if (!any_pending && low_supports_breakpoints ())
+ need_step_over = find_thread ([this] (thread_info *thread)
+ {
+ return thread_needs_step_over (thread);
+ });
bool leave_all_stopped = (need_step_over != NULL || any_pending);
otherwise deliver. */
for_each_thread ([&] (thread_info *thread)
{
- linux_resume_one_thread (thread, leave_all_stopped);
+ resume_one_thread (thread, leave_all_stopped);
});
if (need_step_over)
async_file_mark ();
}
-/* This function is called once per thread. We check the thread's
- last resume request, which will tell us whether to resume, step, or
- leave the thread stopped. Any signal the client requested to be
- delivered has already been enqueued at this point.
-
- If any thread that GDB wants running is stopped at an internal
- breakpoint that needs stepping over, we start a step-over operation
- on that particular thread, and leave all others stopped. */
-
-static void
-proceed_one_lwp (thread_info *thread, lwp_info *except)
+void
+linux_process_target::proceed_one_lwp (thread_info *thread, lwp_info *except)
{
struct lwp_info *lwp = get_thread_lwp (thread);
int step;
/* If resume_step is requested by GDB, install single-step
breakpoints when the thread is about to be actually resumed if
the single-step breakpoints weren't removed. */
- if (can_software_single_step ()
+ if (supports_software_single_step ()
&& !has_single_step_breakpoints (thread))
install_software_single_step_breakpoints (lwp);
else
step = 0;
- linux_resume_one_lwp (lwp, step, 0, NULL);
+ resume_one_lwp (lwp, step, 0, NULL);
}
-static void
-unsuspend_and_proceed_one_lwp (thread_info *thread, lwp_info *except)
+void
+linux_process_target::unsuspend_and_proceed_one_lwp (thread_info *thread,
+ lwp_info *except)
{
struct lwp_info *lwp = get_thread_lwp (thread);
proceed_one_lwp (thread, except);
}
-/* When we finish a step-over, set threads running again. If there's
- another thread that may need a step-over, now's the time to start
- it. Eventually, we'll move all threads past their breakpoints. */
-
-static void
-proceed_all_lwps (void)
+void
+linux_process_target::proceed_all_lwps ()
{
struct thread_info *need_step_over;
resume any threads - have it step over the breakpoint with all
other threads stopped, then resume all threads again. */
- if (supports_breakpoints ())
+ if (low_supports_breakpoints ())
{
- need_step_over = find_thread (need_step_over_p);
+ need_step_over = find_thread ([this] (thread_info *thread)
+ {
+ return thread_needs_step_over (thread);
+ });
if (need_step_over != NULL)
{
if (debug_threads)
debug_printf ("Proceeding, no step-over needed\n");
- for_each_thread ([] (thread_info *thread)
+ for_each_thread ([this] (thread_info *thread)
{
proceed_one_lwp (thread, NULL);
});
}
-/* Stopped LWPs that the client wanted to be running, that don't have
- pending statuses, are set to run again, except for EXCEPT, if not
- NULL. This undoes a stop_all_lwps call. */
-
-static void
-unstop_all_lwps (int unsuspend, struct lwp_info *except)
+void
+linux_process_target::unstop_all_lwps (int unsuspend, lwp_info *except)
{
if (debug_threads)
{
/* At this point, ESRCH should mean the process is
already gone, in which case we simply ignore attempts
to change its registers. See also the related
- comment in linux_resume_one_lwp. */
+ comment in resume_one_lwp. */
free (buf);
return 0;
}
return addr;
}
-/* Fetch one register. */
-static void
-fetch_register (const struct usrregs_info *usrregs,
- struct regcache *regcache, int regno)
+
+void
+linux_process_target::fetch_register (const usrregs_info *usrregs,
+ regcache *regcache, int regno)
{
CORE_ADDR regaddr;
int i, size;
if (regno >= usrregs->num_regs)
return;
- if ((*the_low_target.cannot_fetch_register) (regno))
+ if (low_cannot_fetch_register (regno))
return;
regaddr = register_addr (usrregs, regno);
}
}
- if (the_low_target.supply_ptrace_register)
- the_low_target.supply_ptrace_register (regcache, regno, buf);
- else
- supply_register (regcache, regno, buf);
+ low_supply_ptrace_register (regcache, regno, buf);
}
-/* Store one register. */
-static void
-store_register (const struct usrregs_info *usrregs,
- struct regcache *regcache, int regno)
+void
+linux_process_target::store_register (const usrregs_info *usrregs,
+ regcache *regcache, int regno)
{
CORE_ADDR regaddr;
int i, size;
if (regno >= usrregs->num_regs)
return;
- if ((*the_low_target.cannot_store_register) (regno))
+ if (low_cannot_store_register (regno))
return;
regaddr = register_addr (usrregs, regno);
buf = (char *) alloca (size);
memset (buf, 0, size);
- if (the_low_target.collect_ptrace_register)
- the_low_target.collect_ptrace_register (regcache, regno, buf);
- else
- collect_register (regcache, regno, buf);
+ low_collect_ptrace_register (regcache, regno, buf);
pid = lwpid_of (current_thread);
for (i = 0; i < size; i += sizeof (PTRACE_XFER_TYPE))
/* At this point, ESRCH should mean the process is
already gone, in which case we simply ignore attempts
to change its registers. See also the related
- comment in linux_resume_one_lwp. */
+ comment in resume_one_lwp. */
if (errno == ESRCH)
return;
- if ((*the_low_target.cannot_store_register) (regno) == 0)
+
+ if (!low_cannot_store_register (regno))
error ("writing register %d: %s", regno, safe_strerror (errno));
}
regaddr += sizeof (PTRACE_XFER_TYPE);
}
}
+#endif /* HAVE_LINUX_USRREGS */
-/* Fetch all registers, or just one, from the child process.
- If REGNO is -1, do this for all registers, skipping any that are
- assumed to have been retrieved by regsets_fetch_inferior_registers,
- unless ALL is non-zero.
- Otherwise, REGNO specifies which register (so we can save time). */
-static void
-usr_fetch_inferior_registers (const struct regs_info *regs_info,
- struct regcache *regcache, int regno, int all)
+void
+linux_process_target::low_collect_ptrace_register (regcache *regcache,
+ int regno, char *buf)
{
+ collect_register (regcache, regno, buf);
+}
+
+void
+linux_process_target::low_supply_ptrace_register (regcache *regcache,
+ int regno, const char *buf)
+{
+ supply_register (regcache, regno, buf);
+}
+
+void
+linux_process_target::usr_fetch_inferior_registers (const regs_info *regs_info,
+ regcache *regcache,
+ int regno, int all)
+{
+#ifdef HAVE_LINUX_USRREGS
struct usrregs_info *usr = regs_info->usrregs;
if (regno == -1)
}
else
fetch_register (usr, regcache, regno);
+#endif
}
-/* Store our register values back into the inferior.
- If REGNO is -1, do this for all registers, skipping any that are
- assumed to have been saved by regsets_store_inferior_registers,
- unless ALL is non-zero.
- Otherwise, REGNO specifies which register (so we can save time). */
-static void
-usr_store_inferior_registers (const struct regs_info *regs_info,
- struct regcache *regcache, int regno, int all)
+void
+linux_process_target::usr_store_inferior_registers (const regs_info *regs_info,
+ regcache *regcache,
+ int regno, int all)
{
+#ifdef HAVE_LINUX_USRREGS
struct usrregs_info *usr = regs_info->usrregs;
if (regno == -1)
}
else
store_register (usr, regcache, regno);
-}
-
-#else /* !HAVE_LINUX_USRREGS */
-
-#define usr_fetch_inferior_registers(regs_info, regcache, regno, all) do {} while (0)
-#define usr_store_inferior_registers(regs_info, regcache, regno, all) do {} while (0)
-
#endif
-
+}
void
linux_process_target::fetch_registers (regcache *regcache, int regno)
{
int use_regsets;
int all = 0;
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
+ const regs_info *regs_info = get_regs_info ();
if (regno == -1)
{
- if (the_low_target.fetch_register != NULL
- && regs_info->usrregs != NULL)
+ if (regs_info->usrregs != NULL)
for (regno = 0; regno < regs_info->usrregs->num_regs; regno++)
- (*the_low_target.fetch_register) (regcache, regno);
+ low_fetch_register (regcache, regno);
all = regsets_fetch_inferior_registers (regs_info->regsets_info, regcache);
if (regs_info->usrregs != NULL)
}
else
{
- if (the_low_target.fetch_register != NULL
- && (*the_low_target.fetch_register) (regcache, regno))
+ if (low_fetch_register (regcache, regno))
return;
use_regsets = linux_register_in_regsets (regs_info, regno);
{
int use_regsets;
int all = 0;
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
+ const regs_info *regs_info = get_regs_info ();
if (regno == -1)
{
}
}
+bool
+linux_process_target::low_fetch_register (regcache *regcache, int regno)
+{
+ return false;
+}
/* A wrapper for the read_memory target op. */
static int
linux_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
{
- return the_target->pt->read_memory (memaddr, myaddr, len);
+ return the_target->read_memory (memaddr, myaddr, len);
}
/* Copy LEN bytes from inferior's memory starting at MEMADDR
return n;
}
-/* These breakpoint and watchpoint related wrapper functions simply
- pass on the function call if the target has registered a
- corresponding function. */
-
-bool
-linux_process_target::supports_z_point_type (char z_type)
-{
- return (the_low_target.supports_z_point_type != NULL
- && the_low_target.supports_z_point_type (z_type));
-}
-
int
linux_process_target::insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
int size, raw_breakpoint *bp)
{
if (type == raw_bkpt_type_sw)
return insert_memory_breakpoint (bp);
- else if (the_low_target.insert_point != NULL)
- return the_low_target.insert_point (type, addr, size, bp);
else
- /* Unsupported (see target.h). */
- return 1;
+ return low_insert_point (type, addr, size, bp);
+}
+
+int
+linux_process_target::low_insert_point (raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp)
+{
+ /* Unsupported (see target.h). */
+ return 1;
}
int
{
if (type == raw_bkpt_type_sw)
return remove_memory_breakpoint (bp);
- else if (the_low_target.remove_point != NULL)
- return the_low_target.remove_point (type, addr, size, bp);
else
- /* Unsupported (see target.h). */
- return 1;
+ return low_remove_point (type, addr, size, bp);
+}
+
+int
+linux_process_target::low_remove_point (raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp)
+{
+ /* Unsupported (see target.h). */
+ return 1;
}
/* Implement the stopped_by_sw_breakpoint target_ops
bool
linux_process_target::supports_hardware_single_step ()
{
- return can_hardware_single_step ();
-}
-
-static int
-linux_supports_software_single_step (void)
-{
- return can_software_single_step ();
+ return true;
}
bool
return linux_common_xfer_osdata (annex, readbuf, offset, len);
}
-/* Convert a native/host siginfo object, into/from the siginfo in the
- layout of the inferiors' architecture. */
-
-static void
-siginfo_fixup (siginfo_t *siginfo, gdb_byte *inf_siginfo, int direction)
+void
+linux_process_target::siginfo_fixup (siginfo_t *siginfo,
+ gdb_byte *inf_siginfo, int direction)
{
- int done = 0;
-
- if (the_low_target.siginfo_fixup != NULL)
- done = the_low_target.siginfo_fixup (siginfo, inf_siginfo, direction);
+ bool done = low_siginfo_fixup (siginfo, inf_siginfo, direction);
/* If there was no callback, or the callback didn't do anything,
then just do a straight memcpy. */
}
}
-static int
-linux_xfer_siginfo (const char *annex, unsigned char *readbuf,
- unsigned const char *writebuf, CORE_ADDR offset, int len)
+bool
+linux_process_target::low_siginfo_fixup (siginfo_t *native, gdb_byte *inf,
+ int direction)
+{
+ return false;
+}
+
+bool
+linux_process_target::supports_qxfer_siginfo ()
+{
+ return true;
+}
+
+int
+linux_process_target::qxfer_siginfo (const char *annex,
+ unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len)
{
int pid;
siginfo_t siginfo;
errno = old_errno;
}
-static int
-linux_supports_non_stop (void)
+bool
+linux_process_target::supports_non_stop ()
{
- return 1;
+ return true;
}
-static int
-linux_async (int enable)
+bool
+linux_process_target::async (bool enable)
{
- int previous = target_is_async_p ();
+ bool previous = target_is_async_p ();
if (debug_threads)
debug_printf ("linux_async (%d), previous=%d\n",
return previous;
}
-static int
-linux_start_non_stop (int nonstop)
+int
+linux_process_target::start_non_stop (bool nonstop)
{
/* Register or unregister from event-loop accordingly. */
- linux_async (nonstop);
+ target_async (nonstop);
- if (target_is_async_p () != (nonstop != 0))
+ if (target_is_async_p () != (nonstop != false))
return -1;
return 0;
}
-static int
-linux_supports_multi_process (void)
+bool
+linux_process_target::supports_multi_process ()
{
- return 1;
+ return true;
}
/* Check if fork events are supported. */
-static int
-linux_supports_fork_events (void)
+bool
+linux_process_target::supports_fork_events ()
{
return linux_supports_tracefork ();
}
/* Check if vfork events are supported. */
-static int
-linux_supports_vfork_events (void)
+bool
+linux_process_target::supports_vfork_events ()
{
return linux_supports_tracefork ();
}
/* Check if exec events are supported. */
-static int
-linux_supports_exec_events (void)
+bool
+linux_process_target::supports_exec_events ()
{
return linux_supports_traceexec ();
}
ptrace flags for all inferiors. This is in case the new GDB connection
doesn't support the same set of events that the previous one did. */
-static void
-linux_handle_new_gdb_connection (void)
+void
+linux_process_target::handle_new_gdb_connection ()
{
/* Request that all the lwps reset their ptrace options. */
for_each_thread ([] (thread_info *thread)
});
}
-static int
-linux_supports_disable_randomization (void)
+int
+linux_process_target::handle_monitor_command (char *mon)
{
-#ifdef HAVE_PERSONALITY
- return 1;
+#ifdef USE_THREAD_DB
+ return thread_db_handle_monitor_command (mon);
#else
return 0;
#endif
}
-static int
-linux_supports_agent (void)
+int
+linux_process_target::core_of_thread (ptid_t ptid)
{
- return 1;
+ return linux_common_core_of_thread (ptid);
}
-static int
-linux_supports_range_stepping (void)
+bool
+linux_process_target::supports_disable_randomization ()
{
- if (can_software_single_step ())
- return 1;
- if (*the_low_target.supports_range_stepping == NULL)
- return 0;
+#ifdef HAVE_PERSONALITY
+ return true;
+#else
+ return false;
+#endif
+}
+
+bool
+linux_process_target::supports_agent ()
+{
+ return true;
+}
- return (*the_low_target.supports_range_stepping) ();
+bool
+linux_process_target::supports_range_stepping ()
+{
+ if (supports_software_single_step ())
+ return true;
+
+ return low_supports_range_stepping ();
+}
+
+bool
+linux_process_target::low_supports_range_stepping ()
+{
+ return false;
+}
+
+bool
+linux_process_target::supports_pid_to_exec_file ()
+{
+ return true;
+}
+
+char *
+linux_process_target::pid_to_exec_file (int pid)
+{
+ return linux_proc_pid_to_exec_file (pid);
+}
+
+bool
+linux_process_target::supports_multifs ()
+{
+ return true;
+}
+
+int
+linux_process_target::multifs_open (int pid, const char *filename,
+ int flags, mode_t mode)
+{
+ return linux_mntns_open_cloexec (pid, filename, flags, mode);
+}
+
+int
+linux_process_target::multifs_unlink (int pid, const char *filename)
+{
+ return linux_mntns_unlink (pid, filename);
+}
+
+ssize_t
+linux_process_target::multifs_readlink (int pid, const char *filename,
+ char *buf, size_t bufsiz)
+{
+ return linux_mntns_readlink (pid, filename, buf, bufsiz);
}
#if defined PT_GETDSBT || defined PTRACE_GETFDPIC
# define LINUX_LOADMAP_INTERP PTRACE_GETFDPIC_INTERP
# endif
-static int
-linux_read_loadmap (const char *annex, CORE_ADDR offset,
- unsigned char *myaddr, unsigned int len)
+bool
+linux_process_target::supports_read_loadmap ()
+{
+ return true;
+}
+
+int
+linux_process_target::read_loadmap (const char *annex, CORE_ADDR offset,
+ unsigned char *myaddr, unsigned int len)
{
int pid = lwpid_of (current_thread);
int addr = -1;
memcpy (myaddr, (char *) data + offset, copy_length);
return copy_length;
}
-#else
-# define linux_read_loadmap NULL
#endif /* defined PT_GETDSBT || defined PTRACE_GETFDPIC */
-static void
-linux_process_qsupported (char **features, int count)
-{
- if (the_low_target.process_qsupported != NULL)
- the_low_target.process_qsupported (features, count);
-}
-
-static int
-linux_supports_catch_syscall (void)
+bool
+linux_process_target::supports_catch_syscall ()
{
- return (the_low_target.get_syscall_trapinfo != NULL
+ return (low_supports_catch_syscall ()
&& linux_supports_tracesysgood ());
}
-static int
-linux_get_ipa_tdesc_idx (void)
+bool
+linux_process_target::low_supports_catch_syscall ()
{
- if (the_low_target.get_ipa_tdesc_idx == NULL)
- return 0;
-
- return (*the_low_target.get_ipa_tdesc_idx) ();
+ return false;
}
-static int
-linux_supports_tracepoints (void)
+CORE_ADDR
+linux_process_target::read_pc (regcache *regcache)
{
- if (*the_low_target.supports_tracepoints == NULL)
+ if (!low_supports_breakpoints ())
return 0;
- return (*the_low_target.supports_tracepoints) ();
+ return low_get_pc (regcache);
}
-static CORE_ADDR
-linux_read_pc (struct regcache *regcache)
+void
+linux_process_target::write_pc (regcache *regcache, CORE_ADDR pc)
{
- if (the_low_target.get_pc == NULL)
- return 0;
+ gdb_assert (low_supports_breakpoints ());
- return (*the_low_target.get_pc) (regcache);
+ low_set_pc (regcache, pc);
}
-static void
-linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
+bool
+linux_process_target::supports_thread_stopped ()
{
- gdb_assert (the_low_target.set_pc != NULL);
-
- (*the_low_target.set_pc) (regcache, pc);
+ return true;
}
-static int
-linux_thread_stopped (struct thread_info *thread)
+bool
+linux_process_target::thread_stopped (thread_info *thread)
{
return get_thread_lwp (thread)->stopped;
}
/* This exposes stop-all-threads functionality to other modules. */
-static void
-linux_pause_all (int freeze)
+void
+linux_process_target::pause_all (bool freeze)
{
stop_all_lwps (freeze, NULL);
}
/* This exposes unstop-all-threads functionality to other gdbserver
modules. */
-static void
-linux_unpause_all (int unfreeze)
+void
+linux_process_target::unpause_all (bool unfreeze)
{
unstop_all_lwps (unfreeze, NULL);
}
/* Neither ptrace nor /proc/PID/mem allow accessing memory through a
running LWP. */
if (non_stop)
- linux_pause_all (1);
+ target_pause_all (true);
return 0;
}
/* Neither ptrace nor /proc/PID/mem allow accessing memory through a
running LWP. */
if (non_stop)
- linux_unpause_all (1);
-}
-
-static int
-linux_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint, CORE_ADDR tpaddr,
- CORE_ADDR collector,
- CORE_ADDR lockaddr,
- ULONGEST orig_size,
- CORE_ADDR *jump_entry,
- CORE_ADDR *trampoline,
- ULONGEST *trampoline_size,
- unsigned char *jjump_pad_insn,
- ULONGEST *jjump_pad_insn_size,
- CORE_ADDR *adjusted_insn_addr,
- CORE_ADDR *adjusted_insn_addr_end,
- char *err)
-{
- return (*the_low_target.install_fast_tracepoint_jump_pad)
- (tpoint, tpaddr, collector, lockaddr, orig_size,
- jump_entry, trampoline, trampoline_size,
- jjump_pad_insn, jjump_pad_insn_size,
- adjusted_insn_addr, adjusted_insn_addr_end,
- err);
-}
-
-static struct emit_ops *
-linux_emit_ops (void)
-{
- if (the_low_target.emit_ops != NULL)
- return (*the_low_target.emit_ops) ();
- else
- return NULL;
-}
-
-static int
-linux_get_min_fast_tracepoint_insn_len (void)
-{
- return (*the_low_target.get_min_fast_tracepoint_insn_len) ();
+ target_unpause_all (true);
}
/* Extract &phdr and num_phdr in the inferior. Return 0 on success. */
return ret;
}
+bool
+linux_process_target::supports_qxfer_libraries_svr4 ()
+{
+ return true;
+}
+
struct link_map_offsets
{
/* Offset and size of r_debug.r_version. */
/* Construct qXfer:libraries-svr4:read reply. */
-static int
-linux_qxfer_libraries_svr4 (const char *annex, unsigned char *readbuf,
- unsigned const char *writebuf,
- CORE_ADDR offset, int len)
+int
+linux_process_target::qxfer_libraries_svr4 (const char *annex,
+ unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len)
{
struct process_info_private *const priv = current_process ()->priv;
char filename[PATH_MAX];
#ifdef HAVE_LINUX_BTRACE
+btrace_target_info *
+linux_process_target::enable_btrace (ptid_t ptid,
+ const btrace_config *conf)
+{
+ return linux_enable_btrace (ptid, conf);
+}
+
/* See to_disable_btrace target method. */
-static int
-linux_low_disable_btrace (struct btrace_target_info *tinfo)
+int
+linux_process_target::disable_btrace (btrace_target_info *tinfo)
{
enum btrace_error err;
/* See to_read_btrace target method. */
-static int
-linux_low_read_btrace (struct btrace_target_info *tinfo, struct buffer *buffer,
- enum btrace_read_type type)
+int
+linux_process_target::read_btrace (btrace_target_info *tinfo,
+ buffer *buffer,
+ enum btrace_read_type type)
{
struct btrace_data btrace;
enum btrace_error err;
/* See to_btrace_conf target method. */
-static int
-linux_low_btrace_conf (const struct btrace_target_info *tinfo,
- struct buffer *buffer)
+int
+linux_process_target::read_btrace_conf (const btrace_target_info *tinfo,
+ buffer *buffer)
{
const struct btrace_config *conf;
return ptid_of (current_thread);
}
-/* Implementation of the target_ops method "breakpoint_kind_from_pc". */
-
-static int
-linux_breakpoint_kind_from_pc (CORE_ADDR *pcptr)
-{
- if (the_low_target.breakpoint_kind_from_pc != NULL)
- return (*the_low_target.breakpoint_kind_from_pc) (pcptr);
- else
- return default_breakpoint_kind_from_pc (pcptr);
-}
-
-/* Implementation of the target_ops method "sw_breakpoint_from_kind". */
-
-static const gdb_byte *
-linux_sw_breakpoint_from_kind (int kind, int *size)
+const char *
+linux_process_target::thread_name (ptid_t thread)
{
- gdb_assert (the_low_target.sw_breakpoint_from_kind != NULL);
-
- return (*the_low_target.sw_breakpoint_from_kind) (kind, size);
+ return linux_proc_tid_get_name (thread);
}
-/* Implementation of the target_ops method
- "breakpoint_kind_from_current_state". */
-
-static int
-linux_breakpoint_kind_from_current_state (CORE_ADDR *pcptr)
+#if USE_THREAD_DB
+bool
+linux_process_target::thread_handle (ptid_t ptid, gdb_byte **handle,
+ int *handle_len)
{
- if (the_low_target.breakpoint_kind_from_current_state != NULL)
- return (*the_low_target.breakpoint_kind_from_current_state) (pcptr);
- else
- return linux_breakpoint_kind_from_pc (pcptr);
+ return thread_db_thread_handle (ptid, handle, handle_len);
}
+#endif
/* Default implementation of linux_target_ops method "set_pc" for
32-bit pc register which is literally named "pc". */
gdb_assert (wordsize == 4 || wordsize == 8);
- while (the_target->pt->read_auxv (offset, data, 2 * wordsize) == 2 * wordsize)
+ while (the_target->read_auxv (offset, data, 2 * wordsize) == 2 * wordsize)
{
if (wordsize == 4)
{
return hwcap2;
}
-/* The linux target ops object. */
-
-static linux_process_target the_linux_target;
-
-static process_stratum_target linux_target_ops = {
- linux_xfer_siginfo,
- linux_supports_non_stop,
- linux_async,
- linux_start_non_stop,
- linux_supports_multi_process,
- linux_supports_fork_events,
- linux_supports_vfork_events,
- linux_supports_exec_events,
- linux_handle_new_gdb_connection,
-#ifdef USE_THREAD_DB
- thread_db_handle_monitor_command,
-#else
- NULL,
-#endif
- linux_common_core_of_thread,
- linux_read_loadmap,
- linux_process_qsupported,
- linux_supports_tracepoints,
- linux_read_pc,
- linux_write_pc,
- linux_thread_stopped,
- NULL,
- linux_pause_all,
- linux_unpause_all,
- linux_stabilize_threads,
- linux_install_fast_tracepoint_jump_pad,
- linux_emit_ops,
- linux_supports_disable_randomization,
- linux_get_min_fast_tracepoint_insn_len,
- linux_qxfer_libraries_svr4,
- linux_supports_agent,
-#ifdef HAVE_LINUX_BTRACE
- linux_enable_btrace,
- linux_low_disable_btrace,
- linux_low_read_btrace,
- linux_low_btrace_conf,
-#else
- NULL,
- NULL,
- NULL,
- NULL,
-#endif
- linux_supports_range_stepping,
- linux_proc_pid_to_exec_file,
- linux_mntns_open_cloexec,
- linux_mntns_unlink,
- linux_mntns_readlink,
- linux_breakpoint_kind_from_pc,
- linux_sw_breakpoint_from_kind,
- linux_proc_tid_get_name,
- linux_breakpoint_kind_from_current_state,
- linux_supports_software_single_step,
- linux_supports_catch_syscall,
- linux_get_ipa_tdesc_idx,
-#if USE_THREAD_DB
- thread_db_thread_handle,
-#else
- NULL,
-#endif
- &the_linux_target,
-};
-
#ifdef HAVE_LINUX_REGSETS
void
initialize_regsets_info (struct regsets_info *info)
struct sigaction sigchld_action;
memset (&sigchld_action, 0, sizeof (sigchld_action));
- set_target_ops (&linux_target_ops);
+ set_target_ops (the_linux_target);
linux_ptrace_init_warnings ();
linux_proc_init_warnings ();
projects / deliverable / binutils-gdb.git / blobdiff