/* Target-struct-independent code to start (run) and stop an inferior
process.
- Copyright (C) 1986-2016 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "event-loop.h"
#include "thread-fsm.h"
#include "common/enum-flags.h"
+#include "progspace-and-thread.h"
+#include "common/gdb_optional.h"
+#include "arch-utils.h"
/* Prototypes for local functions */
-static void signals_info (char *, int);
+static void info_signals_command (char *, int);
static void handle_command (char *, int);
static int currently_stepping (struct thread_info *tp);
-void _initialize_infrun (void);
-
void nullify_last_target_wait_ptid (void);
static void insert_hp_step_resume_breakpoint_at_frame (struct frame_info *);
fprintf_filtered (file, _("Mode of the step operation is %s.\n"), value);
}
-/* In asynchronous mode, but simulating synchronous execution. */
-
-int sync_execution = 0;
-
/* proceed and normal_stop use this to notify the user when the
inferior stopped in a different thread than it had been running
in. */
if (has_vforked
&& !non_stop /* Non-stop always resumes both branches. */
- && (!target_is_async_p () || sync_execution)
+ && current_ui->prompt_state == PROMPT_BLOCKED
&& !(follow_child || detach_fork || sched_multi))
{
/* The parent stays blocked inside the vfork syscall until the
/* Detach new forked process? */
if (detach_fork)
{
- struct cleanup *old_chain;
-
/* Before detaching from the child, remove all breakpoints
from it. If we forked, then this has already been taken
care of by infrun.c. If we vforked however, any
else
{
struct inferior *parent_inf, *child_inf;
- struct cleanup *old_chain;
/* Add process to GDB's tables. */
child_inf = add_inferior (ptid_get_pid (child_ptid));
child_inf->gdbarch = parent_inf->gdbarch;
copy_inferior_target_desc_info (child_inf, parent_inf);
- old_chain = save_inferior_ptid ();
- save_current_program_space ();
+ scoped_restore_current_pspace_and_thread restore_pspace_thread;
inferior_ptid = child_ptid;
add_thread (inferior_ptid);
+ set_current_inferior (child_inf);
child_inf->symfile_flags = SYMFILE_NO_READ;
/* If this is a vfork child, then the address-space is
required. */
solib_create_inferior_hook (0);
}
-
- do_cleanups (old_chain);
}
if (has_vforked)
inferior_ptid = child_ptid;
add_thread (inferior_ptid);
+ set_current_inferior (child_inf);
/* If this is a vfork child, then the address-space is shared
with the parent. If we detached from the parent, then we can
CORE_ADDR step_range_start = 0;
CORE_ADDR step_range_end = 0;
struct frame_id step_frame_id = { 0 };
- struct interp *command_interp = NULL;
+ struct thread_fsm *thread_fsm = NULL;
if (!non_stop)
{
step_frame_id = tp->control.step_frame_id;
exception_resume_breakpoint
= clone_momentary_breakpoint (tp->control.exception_resume_breakpoint);
- command_interp = tp->control.command_interp;
+ thread_fsm = tp->thread_fsm;
/* For now, delete the parent's sr breakpoint, otherwise,
parent/child sr breakpoints are considered duplicates,
tp->control.step_range_end = 0;
tp->control.step_frame_id = null_frame_id;
delete_exception_resume_breakpoint (tp);
- tp->control.command_interp = NULL;
+ tp->thread_fsm = NULL;
}
parent = inferior_ptid;
tp->control.step_frame_id = step_frame_id;
tp->control.exception_resume_breakpoint
= exception_resume_breakpoint;
- tp->control.command_interp = command_interp;
+ tp->thread_fsm = thread_fsm;
}
else
{
return 0;
}
+/* Save/restore inferior_ptid, current program space and current
+ inferior. Only use this if the current context points at an exited
+ inferior (and therefore there's no current thread to save). */
+class scoped_restore_exited_inferior
+{
+public:
+ scoped_restore_exited_inferior ()
+ : m_saved_ptid (&inferior_ptid)
+ {}
+
+private:
+ scoped_restore_tmpl<ptid_t> m_saved_ptid;
+ scoped_restore_current_program_space m_pspace;
+ scoped_restore_current_inferior m_inferior;
+};
+
/* Called whenever we notice an exec or exit event, to handle
detaching or resuming a vfork parent. */
if (inf->vfork_parent->pending_detach)
{
struct thread_info *tp;
- struct cleanup *old_chain;
struct program_space *pspace;
struct address_space *aspace;
inf->vfork_parent->pending_detach = 0;
+ gdb::optional<scoped_restore_exited_inferior>
+ maybe_restore_inferior;
+ gdb::optional<scoped_restore_current_pspace_and_thread>
+ maybe_restore_thread;
+
+ /* If we're handling a child exit, then inferior_ptid points
+ at the inferior's pid, not to a thread. */
if (!exec)
- {
- /* If we're handling a child exit, then inferior_ptid
- points at the inferior's pid, not to a thread. */
- old_chain = save_inferior_ptid ();
- save_current_program_space ();
- save_current_inferior ();
- }
+ maybe_restore_inferior.emplace ();
else
- old_chain = save_current_space_and_thread ();
+ maybe_restore_thread.emplace ();
/* We're letting loose of the parent. */
tp = any_live_thread_of_process (inf->vfork_parent->pid);
/* Put it back. */
inf->pspace = pspace;
inf->aspace = aspace;
-
- do_cleanups (old_chain);
}
else if (exec)
{
}
else
{
- struct cleanup *old_chain;
struct program_space *pspace;
/* If this is a vfork child exiting, then the pspace and
go ahead and create a new one for this exiting
inferior. */
- /* Switch to null_ptid, so that clone_program_space doesn't want
- to read the selected frame of a dead process. */
- old_chain = save_inferior_ptid ();
- inferior_ptid = null_ptid;
+ /* Switch to null_ptid while running clone_program_space, so
+ that clone_program_space doesn't want to read the
+ selected frame of a dead process. */
+ scoped_restore restore_ptid
+ = make_scoped_restore (&inferior_ptid, null_ptid);
/* This inferior is dead, so avoid giving the breakpoints
module the option to write through to it (cloning a
inf->pspace = pspace;
inf->aspace = pspace->aspace;
- /* Put back inferior_ptid. We'll continue mourning this
- inferior. */
- do_cleanups (old_chain);
-
resume_parent = inf->vfork_parent->pid;
/* Break the bonds. */
inf->vfork_parent->vfork_child = NULL;
{
/* If the user wanted the parent to be running, let it go
free now. */
- struct cleanup *old_chain = make_cleanup_restore_current_thread ();
+ scoped_restore_current_thread restore_thread;
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
resume_parent);
iterate_over_threads (proceed_after_vfork_done, &resume_parent);
-
- do_cleanups (old_chain);
}
}
}
fprintf_filtered (file, _("Follow exec mode is \"%s\".\n"), value);
}
-/* EXECD_PATHNAME is assumed to be non-NULL. */
+/* EXEC_FILE_TARGET is assumed to be non-NULL. */
static void
-follow_exec (ptid_t ptid, char *execd_pathname)
+follow_exec (ptid_t ptid, char *exec_file_target)
{
struct thread_info *th, *tmp;
struct inferior *inf = current_inferior ();
int pid = ptid_get_pid (ptid);
ptid_t process_ptid;
+ char *exec_file_host;
+ struct cleanup *old_chain;
/* This is an exec event that we actually wish to pay attention to.
Refresh our symbol table to the newly exec'd program, remove any
process_ptid = pid_to_ptid (pid);
printf_unfiltered (_("%s is executing new program: %s\n"),
target_pid_to_str (process_ptid),
- execd_pathname);
+ exec_file_target);
/* We've followed the inferior through an exec. Therefore, the
inferior has essentially been killed & reborn. */
breakpoint_init_inferior (inf_execd);
- if (*gdb_sysroot != '\0')
- {
- char *name = exec_file_find (execd_pathname, NULL);
+ exec_file_host = exec_file_find (exec_file_target, NULL);
+ old_chain = make_cleanup (xfree, exec_file_host);
- execd_pathname = (char *) alloca (strlen (name) + 1);
- strcpy (execd_pathname, name);
- xfree (name);
- }
+ /* If we were unable to map the executable target pathname onto a host
+ pathname, tell the user that. Otherwise GDB's subsequent behavior
+ is confusing. Maybe it would even be better to stop at this point
+ so that the user can specify a file manually before continuing. */
+ if (exec_file_host == NULL)
+ warning (_("Could not load symbols for executable %s.\n"
+ "Do you need \"set sysroot\"?"),
+ exec_file_target);
/* Reset the shared library package. This ensures that we get a
shlib event when the child reaches "_start", at which point the
inf = add_inferior_with_spaces ();
inf->pid = pid;
- target_follow_exec (inf, execd_pathname);
+ target_follow_exec (inf, exec_file_target);
set_current_inferior (inf);
set_current_program_space (inf->pspace);
- add_thread (ptid);
}
else
{
gdb_assert (current_program_space == inf->pspace);
- /* That a.out is now the one to use. */
- exec_file_attach (execd_pathname, 0);
-
- /* SYMFILE_DEFER_BP_RESET is used as the proper displacement for PIE
- (Position Independent Executable) main symbol file will get applied by
- solib_create_inferior_hook below. breakpoint_re_set would fail to insert
- the breakpoints with the zero displacement. */
-
- symbol_file_add (execd_pathname,
- (inf->symfile_flags
- | SYMFILE_MAINLINE | SYMFILE_DEFER_BP_RESET),
- NULL, 0);
+ /* Attempt to open the exec file. SYMFILE_DEFER_BP_RESET is used
+ because the proper displacement for a PIE (Position Independent
+ Executable) main symbol file will only be computed by
+ solib_create_inferior_hook below. breakpoint_re_set would fail
+ to insert the breakpoints with the zero displacement. */
+ try_open_exec_file (exec_file_host, inf, SYMFILE_DEFER_BP_RESET);
- if ((inf->symfile_flags & SYMFILE_NO_READ) == 0)
- set_initial_language ();
+ do_cleanups (old_chain);
/* If the target can specify a description, read it. Must do this
after flipping to the new executable (because the target supplied
registers. */
target_find_description ();
+ /* The add_thread call ends up reading registers, so do it after updating the
+ target description. */
+ if (follow_exec_mode_string == follow_exec_mode_new)
+ add_thread (ptid);
+
solib_create_inferior_hook (0);
jit_inferior_created_hook ();
/* The instruction being stepped over triggers a nonsteppable
watchpoint. If true, we'll skip inserting watchpoints. */
int nonsteppable_watchpoint_p;
+
+ /* The thread's global number. */
+ int thread;
};
/* The step-over info of the location that is being stepped over.
static struct step_over_info step_over_info;
/* Record the address of the breakpoint/instruction we're currently
- stepping over. */
+ stepping over.
+ N.B. We record the aspace and address now, instead of say just the thread,
+ because when we need the info later the thread may be running. */
static void
set_step_over_info (struct address_space *aspace, CORE_ADDR address,
- int nonsteppable_watchpoint_p)
+ int nonsteppable_watchpoint_p,
+ int thread)
{
step_over_info.aspace = aspace;
step_over_info.address = address;
step_over_info.nonsteppable_watchpoint_p = nonsteppable_watchpoint_p;
+ step_over_info.thread = thread;
}
/* Called when we're not longer stepping over a breakpoint / an
step_over_info.aspace = NULL;
step_over_info.address = 0;
step_over_info.nonsteppable_watchpoint_p = 0;
+ step_over_info.thread = -1;
}
/* See infrun.h. */
/* See infrun.h. */
+int
+thread_is_stepping_over_breakpoint (int thread)
+{
+ return (step_over_info.thread != -1
+ && thread == step_over_info.thread);
+}
+
+/* See infrun.h. */
+
int
stepping_past_nonsteppable_watchpoint (void)
{
/* Indicate that there is no cleanup pending. */
displaced->step_ptid = null_ptid;
- if (displaced->step_closure)
- {
- gdbarch_displaced_step_free_closure (displaced->step_gdbarch,
- displaced->step_closure);
- displaced->step_closure = NULL;
- }
+ xfree (displaced->step_closure);
+ displaced->step_closure = NULL;
}
static void
static int
displaced_step_prepare_throw (ptid_t ptid)
{
- struct cleanup *old_cleanups, *ignore_cleanups;
+ struct cleanup *ignore_cleanups;
struct thread_info *tp = find_thread_ptid (ptid);
struct regcache *regcache = get_thread_regcache (ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
displaced_step_clear (displaced);
- old_cleanups = save_inferior_ptid ();
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ptid;
original = regcache_read_pc (regcache);
"Stepping over breakpoint in-line instead.\n");
}
- do_cleanups (old_cleanups);
return -1;
}
/* The architecture doesn't know how or want to displaced step
this instruction or instruction sequence. Fallback to
stepping over the breakpoint in-line. */
- do_cleanups (old_cleanups);
+ do_cleanups (ignore_cleanups);
return -1;
}
discard_cleanups (ignore_cleanups);
- do_cleanups (old_cleanups);
-
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog, "displaced: displaced pc to %s\n",
paddress (gdbarch, copy));
{
struct displaced_step_inferior_state *displaced_state;
- if (ex.error != MEMORY_ERROR)
+ if (ex.error != MEMORY_ERROR
+ && ex.error != NOT_SUPPORTED_ERROR)
throw_exception (ex);
if (debug_infrun)
write_memory_ptid (ptid_t ptid, CORE_ADDR memaddr,
const gdb_byte *myaddr, int len)
{
- struct cleanup *ptid_cleanup = save_inferior_ptid ();
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ptid;
write_memory (memaddr, myaddr, len);
- do_cleanups (ptid_cleanup);
}
/* Restore the contents of the copy area for thread PTID. */
step_over_what step_what;
int must_be_in_line;
+ gdb_assert (!tp->stop_requested);
+
next = thread_step_over_chain_next (tp);
/* If this inferior already has a displaced step in process,
static void
infrun_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid)
{
- struct displaced_step_request *it;
struct displaced_step_inferior_state *displaced;
if (ptid_equal (inferior_ptid, old_ptid))
int hw_step = 1;
if (execution_direction == EXEC_FORWARD
- && gdbarch_software_single_step_p (gdbarch)
- && gdbarch_software_single_step (gdbarch, get_current_frame ()))
- {
- hw_step = 0;
- }
+ && gdbarch_software_single_step_p (gdbarch))
+ hw_step = !insert_single_step_breakpoints (gdbarch);
+
return hw_step;
}
{
struct thread_info *tp = inferior_thread ();
+ gdb_assert (!tp->stop_requested);
+
/* Install inferior's terminal modes. */
target_terminal_inferior ();
target_pass_signals ((int) GDB_SIGNAL_LAST, signal_pass);
target_resume (resume_ptid, step, sig);
+
+ target_commit_resume ();
}
/* Resume the inferior, but allow a QUIT. This is useful if the user
single-step). */
int step;
+ gdb_assert (!tp->stop_requested);
gdb_assert (!thread_is_in_step_over_chain (tp));
QUIT;
{
if (debug_infrun)
{
- char *statstr;
+ std::string statstr
+ = target_waitstatus_to_string (&tp->suspend.waitstatus);
- statstr = target_waitstatus_to_string (&tp->suspend.waitstatus);
fprintf_unfiltered (gdb_stdlog,
- "infrun: resume: thread %s has pending wait status %s "
- "(currently_stepping=%d).\n",
- target_pid_to_str (tp->ptid), statstr,
+ "infrun: resume: thread %s has pending wait "
+ "status %s (currently_stepping=%d).\n",
+ target_pid_to_str (tp->ptid), statstr.c_str (),
currently_stepping (tp));
- xfree (statstr);
}
tp->resumed = 1;
stop_all_threads ();
set_step_over_info (get_regcache_aspace (regcache),
- regcache_read_pc (regcache), 0);
+ regcache_read_pc (regcache), 0, tp->global_num);
step = maybe_software_singlestep (gdbarch, pc);
}
else if (debug_infrun)
{
- char *statstr;
+ std::string statstr
+ = target_waitstatus_to_string (&tp->suspend.waitstatus);
- statstr = target_waitstatus_to_string (&tp->suspend.waitstatus);
fprintf_unfiltered (gdb_stdlog,
"infrun: clear_proceed_status_thread: thread %s "
"has pending wait status %s "
"(currently_stepping=%d).\n",
- target_pid_to_str (tp->ptid), statstr,
+ target_pid_to_str (tp->ptid), statstr.c_str (),
currently_stepping (tp));
- xfree (statstr);
}
}
tp->control.proceed_to_finish = 0;
- tp->control.command_interp = NULL;
tp->control.stepping_command = 0;
/* Discard any remaining commands or status from previous stop. */
static step_over_what
thread_still_needs_step_over (struct thread_info *tp)
{
- struct inferior *inf = find_inferior_ptid (tp->ptid);
step_over_what what = 0;
if (thread_still_needs_step_over_bp (tp))
struct execution_control_state ecss;
struct execution_control_state *ecs = &ecss;
struct cleanup *old_chain;
+ struct cleanup *defer_resume_cleanup;
int started;
/* If we're stopped at a fork/vfork, follow the branch set by the
if (siggnal != GDB_SIGNAL_DEFAULT)
tp->suspend.stop_signal = siggnal;
- /* Record the interpreter that issued the execution command that
- caused this thread to resume. If the top level interpreter is
- MI/async, and the execution command was a CLI command
- (next/step/etc.), we'll want to print stop event output to the MI
- console channel (the stepped-to line, etc.), as if the user
- entered the execution command on a real GDB console. */
- tp->control.command_interp = command_interp ();
-
resume_ptid = user_visible_resume_ptid (tp->control.stepping_command);
/* If an exception is thrown from this point on, make sure to
until the target stops again. */
tp->prev_pc = regcache_read_pc (regcache);
+ defer_resume_cleanup = make_cleanup_defer_target_commit_resume ();
+
started = start_step_over ();
if (step_over_info_valid_p ())
error (_("Command aborted."));
}
+ do_cleanups (defer_resume_cleanup);
+ target_commit_resume ();
+
discard_cleanups (old_chain);
/* Tell the event loop to wait for it to stop. If the target
static void process_event_stop_test (struct execution_control_state *ecs);
static int switch_back_to_stepped_thread (struct execution_control_state *ecs);
-/* Callback for iterate over threads. If the thread is stopped, but
- the user/frontend doesn't know about that yet, go through
- normal_stop, as if the thread had just stopped now. ARG points at
- a ptid. If PTID is MINUS_ONE_PTID, applies to all threads. If
- ptid_is_pid(PTID) is true, applies to all threads of the process
- pointed at by PTID. Otherwise, apply only to the thread pointed by
- PTID. */
-
-static int
-infrun_thread_stop_requested_callback (struct thread_info *info, void *arg)
-{
- ptid_t ptid = * (ptid_t *) arg;
-
- if ((ptid_equal (info->ptid, ptid)
- || ptid_equal (minus_one_ptid, ptid)
- || (ptid_is_pid (ptid)
- && ptid_get_pid (ptid) == ptid_get_pid (info->ptid)))
- && is_running (info->ptid)
- && !is_executing (info->ptid))
- {
- struct cleanup *old_chain;
- struct execution_control_state ecss;
- struct execution_control_state *ecs = &ecss;
-
- memset (ecs, 0, sizeof (*ecs));
-
- old_chain = make_cleanup_restore_current_thread ();
-
- overlay_cache_invalid = 1;
- /* Flush target cache before starting to handle each event.
- Target was running and cache could be stale. This is just a
- heuristic. Running threads may modify target memory, but we
- don't get any event. */
- target_dcache_invalidate ();
-
- /* Go through handle_inferior_event/normal_stop, so we always
- have consistent output as if the stop event had been
- reported. */
- ecs->ptid = info->ptid;
- ecs->event_thread = info;
- ecs->ws.kind = TARGET_WAITKIND_STOPPED;
- ecs->ws.value.sig = GDB_SIGNAL_0;
-
- handle_inferior_event (ecs);
-
- if (!ecs->wait_some_more)
- {
- /* Cancel any running execution command. */
- thread_cancel_execution_command (info);
-
- normal_stop ();
- }
-
- do_cleanups (old_chain);
- }
-
- return 0;
-}
-
/* This function is attached as a "thread_stop_requested" observer.
Cleanup local state that assumed the PTID was to be resumed, and
report the stop to the frontend. */
{
struct thread_info *tp;
- /* PTID was requested to stop. Remove matching threads from the
- step-over queue, so we don't try to resume them
- automatically. */
+ /* PTID was requested to stop. If the thread was already stopped,
+ but the user/frontend doesn't know about that yet (e.g., the
+ thread had been temporarily paused for some step-over), set up
+ for reporting the stop now. */
ALL_NON_EXITED_THREADS (tp)
if (ptid_match (tp->ptid, ptid))
{
+ if (tp->state != THREAD_RUNNING)
+ continue;
+ if (tp->executing)
+ continue;
+
+ /* Remove matching threads from the step-over queue, so
+ start_step_over doesn't try to resume them
+ automatically. */
if (thread_is_in_step_over_chain (tp))
thread_step_over_chain_remove (tp);
- }
- iterate_over_threads (infrun_thread_stop_requested_callback, &ptid);
+ /* If the thread is stopped, but the user/frontend doesn't
+ know about that yet, queue a pending event, as if the
+ thread had just stopped now. Unless the thread already had
+ a pending event. */
+ if (!tp->suspend.waitstatus_pending_p)
+ {
+ tp->suspend.waitstatus_pending_p = 1;
+ tp->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED;
+ tp->suspend.waitstatus.value.sig = GDB_SIGNAL_0;
+ }
+
+ /* Clear the inline-frame state, since we're re-processing the
+ stop. */
+ clear_inline_frame_state (tp->ptid);
+
+ /* If this thread was paused because some other thread was
+ doing an inline-step over, let that finish first. Once
+ that happens, we'll restart all threads and consume pending
+ stop events then. */
+ if (step_over_info_valid_p ())
+ continue;
+
+ /* Otherwise we can process the (new) pending event now. Set
+ it so this pending event is considered by
+ do_target_wait. */
+ tp->resumed = 1;
+ }
}
static void
print_target_wait_results (ptid_t waiton_ptid, ptid_t result_ptid,
const struct target_waitstatus *ws)
{
- char *status_string = target_waitstatus_to_string (ws);
- struct ui_file *tmp_stream = mem_fileopen ();
- char *text;
+ std::string status_string = target_waitstatus_to_string (ws);
+ string_file stb;
/* The text is split over several lines because it was getting too long.
Call fprintf_unfiltered (gdb_stdlog) once so that the text is still
output as a unit; we want only one timestamp printed if debug_timestamp
is set. */
- fprintf_unfiltered (tmp_stream,
- "infrun: target_wait (%d.%ld.%ld",
- ptid_get_pid (waiton_ptid),
- ptid_get_lwp (waiton_ptid),
- ptid_get_tid (waiton_ptid));
+ stb.printf ("infrun: target_wait (%d.%ld.%ld",
+ ptid_get_pid (waiton_ptid),
+ ptid_get_lwp (waiton_ptid),
+ ptid_get_tid (waiton_ptid));
if (ptid_get_pid (waiton_ptid) != -1)
- fprintf_unfiltered (tmp_stream,
- " [%s]", target_pid_to_str (waiton_ptid));
- fprintf_unfiltered (tmp_stream, ", status) =\n");
- fprintf_unfiltered (tmp_stream,
- "infrun: %d.%ld.%ld [%s],\n",
- ptid_get_pid (result_ptid),
- ptid_get_lwp (result_ptid),
- ptid_get_tid (result_ptid),
- target_pid_to_str (result_ptid));
- fprintf_unfiltered (tmp_stream,
- "infrun: %s\n",
- status_string);
-
- text = ui_file_xstrdup (tmp_stream, NULL);
+ stb.printf (" [%s]", target_pid_to_str (waiton_ptid));
+ stb.printf (", status) =\n");
+ stb.printf ("infrun: %d.%ld.%ld [%s],\n",
+ ptid_get_pid (result_ptid),
+ ptid_get_lwp (result_ptid),
+ ptid_get_tid (result_ptid),
+ target_pid_to_str (result_ptid));
+ stb.printf ("infrun: %s\n", status_string.c_str ());
/* This uses %s in part to handle %'s in the text, but also to avoid
a gcc error: the format attribute requires a string literal. */
- fprintf_unfiltered (gdb_stdlog, "%s", text);
-
- xfree (status_string);
- xfree (text);
- ui_file_delete (tmp_stream);
+ fprintf_unfiltered (gdb_stdlog, "%s", stb.c_str ());
}
/* Select a thread at random, out of those which are resumed and have
{
if (debug_infrun)
{
- char *statstr;
+ std::string statstr
+ = target_waitstatus_to_string (&tp->suspend.waitstatus);
- statstr = target_waitstatus_to_string (&tp->suspend.waitstatus);
fprintf_unfiltered (gdb_stdlog,
"infrun: Using pending wait status %s for %s.\n",
- statstr,
+ statstr.c_str (),
target_pid_to_str (tp->ptid));
- xfree (statstr);
}
/* Now that we've selected our final event LWP, un-adjust its PC
{
struct inferior *inf = current_inferior ();
ptid_t pid_ptid = pid_to_ptid (inf->pid);
- struct cleanup *old_chain_1;
struct displaced_step_inferior_state *displaced;
displaced = get_displaced_stepping_state (inf->pid);
fprintf_unfiltered (gdb_stdlog,
"displaced-stepping in-process while detaching");
- old_chain_1 = make_cleanup_restore_integer (&inf->detaching);
- inf->detaching = 1;
+ scoped_restore restore_detaching = make_scoped_restore (&inf->detaching, true);
while (!ptid_equal (displaced->step_ptid, null_ptid))
{
inferior, so this must mean the process is gone. */
if (!ecs->wait_some_more)
{
- discard_cleanups (old_chain_1);
+ restore_detaching.release ();
error (_("Program exited while detaching"));
}
}
- discard_cleanups (old_chain_1);
+ restore_detaching.release ();
}
/* Wait for control to return from inferior to debugger.
static void
reinstall_readline_callback_handler_cleanup (void *arg)
{
- if (!interpreter_async)
+ struct ui *ui = current_ui;
+
+ if (!ui->async)
{
/* We're not going back to the top level event loop yet. Don't
install the readline callback, as it'd prep the terminal,
return;
}
- if (async_command_editing_p && !sync_execution)
+ if (ui->command_editing && ui->prompt_state != PROMPT_BLOCKED)
gdb_rl_callback_handler_reinstall ();
}
struct thread_info *thr = ecs->event_thread;
if (thr != NULL && thr->thread_fsm != NULL)
- thread_fsm_clean_up (thr->thread_fsm);
+ thread_fsm_clean_up (thr->thread_fsm, thr);
if (!non_stop)
{
continue;
switch_to_thread (thr->ptid);
- thread_fsm_clean_up (thr->thread_fsm);
+ thread_fsm_clean_up (thr->thread_fsm, thr);
}
if (ecs->event_thread != NULL)
}
}
-/* A cleanup that restores the execution direction to the value saved
- in *ARG. */
+/* Helper for all_uis_check_sync_execution_done that works on the
+ current UI. */
static void
-restore_execution_direction (void *arg)
+check_curr_ui_sync_execution_done (void)
{
- enum exec_direction_kind *save_exec_dir = (enum exec_direction_kind *) arg;
+ struct ui *ui = current_ui;
- execution_direction = *save_exec_dir;
+ if (ui->prompt_state == PROMPT_NEEDED
+ && ui->async
+ && !gdb_in_secondary_prompt_p (ui))
+ {
+ target_terminal_ours ();
+ observer_notify_sync_execution_done ();
+ ui_register_input_event_handler (ui);
+ }
+}
+
+/* See infrun.h. */
+
+void
+all_uis_check_sync_execution_done (void)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ check_curr_ui_sync_execution_done ();
+ }
+}
+
+/* See infrun.h. */
+
+void
+all_uis_on_sync_execution_starting (void)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ if (current_ui->prompt_state == PROMPT_NEEDED)
+ async_disable_stdin ();
+ }
}
/* Asynchronous version of wait_for_inferior. It is called by the
struct execution_control_state *ecs = &ecss;
struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
struct cleanup *ts_old_chain;
- int was_sync = sync_execution;
- enum exec_direction_kind save_exec_dir = execution_direction;
int cmd_done = 0;
ptid_t waiton_ptid = minus_one_ptid;
memset (ecs, 0, sizeof (*ecs));
+ /* Events are always processed with the main UI as current UI. This
+ way, warnings, debug output, etc. are always consistently sent to
+ the main console. */
+ scoped_restore save_ui = make_scoped_restore (¤t_ui, main_ui);
+
/* End up with readline processing input, if necessary. */
make_cleanup (reinstall_readline_callback_handler_cleanup, NULL);
set_current_traceframe (-1);
}
+ gdb::optional<scoped_restore_current_thread> maybe_restore_thread;
+
if (non_stop)
/* In non-stop mode, the user/frontend should not notice a thread
switch due to internal events. Make sure we reverse to the
user selected thread and frame after handling the event and
running any breakpoint commands. */
- make_cleanup_restore_current_thread ();
+ maybe_restore_thread.emplace ();
overlay_cache_invalid = 1;
/* Flush target cache before starting to handle each event. Target
event. */
target_dcache_invalidate ();
- make_cleanup (restore_execution_direction, &save_exec_dir);
- execution_direction = target_execution_direction ();
+ scoped_restore save_exec_dir
+ = make_scoped_restore (&execution_direction, target_execution_direction ());
ecs->ptid = do_target_wait (waiton_ptid, &ecs->ws,
target_can_async_p () ? TARGET_WNOHANG : 0);
struct thread_fsm *thread_fsm = thr->thread_fsm;
if (thread_fsm != NULL)
- should_stop = thread_fsm_should_stop (thread_fsm);
+ should_stop = thread_fsm_should_stop (thread_fsm, thr);
}
if (!should_stop)
/* Revert thread and frame. */
do_cleanups (old_chain);
- /* If the inferior was in sync execution mode, and now isn't,
- restore the prompt (a synchronous execution command has finished,
- and we're ready for input). */
- if (interpreter_async && was_sync && !sync_execution)
- observer_notify_sync_execution_done ();
+ /* If a UI was in sync execution mode, and now isn't, restore its
+ prompt (a synchronous execution command has finished, and we're
+ ready for input). */
+ all_uis_check_sync_execution_done ();
if (cmd_done
- && !was_sync
&& exec_done_display_p
&& (ptid_equal (inferior_ptid, null_ptid)
|| !is_running (inferior_ptid)))
return 0;
}
+/* If the event thread has the stop requested flag set, pretend it
+ stopped for a GDB_SIGNAL_0 (i.e., as if it stopped due to
+ target_stop). */
+
+static bool
+handle_stop_requested (struct execution_control_state *ecs)
+{
+ if (ecs->event_thread->stop_requested)
+ {
+ ecs->ws.kind = TARGET_WAITKIND_STOPPED;
+ ecs->ws.value.sig = GDB_SIGNAL_0;
+ handle_signal_stop (ecs);
+ return true;
+ }
+ return false;
+}
+
/* Auxiliary function that handles syscall entry/return events.
It returns 1 if the inferior should keep going (and GDB
should ignore the event), or 0 if the event deserves to be
= bpstat_stop_status (get_regcache_aspace (regcache),
stop_pc, ecs->ptid, &ecs->ws);
+ if (handle_stop_requested (ecs))
+ return 0;
+
if (bpstat_causes_stop (ecs->event_thread->control.stop_bpstat))
{
/* Catchpoint hit. */
}
}
+ if (handle_stop_requested (ecs))
+ return 0;
+
/* If no catchpoint triggered for this, then keep going. */
keep_going (ecs);
return 1;
static int \
thread_stopped_by_ ## REASON (ptid_t ptid) \
{ \
- struct cleanup *old_chain; \
- int res; \
- \
- old_chain = save_inferior_ptid (); \
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); \
inferior_ptid = ptid; \
\
- res = target_stopped_by_ ## REASON (); \
- \
- do_cleanups (old_chain); \
- \
- return res; \
+ return target_stopped_by_ ## REASON (); \
}
/* Generate thread_stopped_by_watchpoint. */
if (debug_infrun)
{
- char *statstr;
+ std::string statstr = target_waitstatus_to_string (ws);
- statstr = target_waitstatus_to_string (ws);
fprintf_unfiltered (gdb_stdlog,
"infrun: saving status %s for %d.%ld.%ld\n",
- statstr,
+ statstr.c_str (),
ptid_get_pid (tp->ptid),
ptid_get_lwp (tp->ptid),
ptid_get_tid (tp->ptid));
- xfree (statstr);
}
/* Record for later. */
{
enum gdb_signal sig;
struct regcache *regcache;
- struct address_space *aspace;
if (debug_infrun)
{
- char *statstr;
+ std::string statstr = target_waitstatus_to_string (&ws);
- statstr = target_waitstatus_to_string (&ws);
fprintf_unfiltered (gdb_stdlog,
"infrun: target_wait %s, saving "
"status for %d.%ld.%ld\n",
- statstr,
+ statstr.c_str (),
ptid_get_pid (t->ptid),
ptid_get_lwp (t->ptid),
ptid_get_tid (t->ptid));
- xfree (statstr);
}
/* Record for later. */
struct inferior *inf;
struct thread_info *thread;
- if (target_can_async_p () && !sync_execution)
+ if (target_can_async_p ())
{
- /* There were no unwaited-for children left in the target, but,
- we're not synchronously waiting for events either. Just
- ignore. */
+ struct ui *ui;
+ int any_sync = 0;
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog,
- "infrun: TARGET_WAITKIND_NO_RESUMED " "(ignoring: bg)\n");
- prepare_to_wait (ecs);
- return 1;
+ ALL_UIS (ui)
+ {
+ if (ui->prompt_state == PROMPT_BLOCKED)
+ {
+ any_sync = 1;
+ break;
+ }
+ }
+ if (!any_sync)
+ {
+ /* There were no unwaited-for children left in the target, but,
+ we're not synchronously waiting for events either. Just
+ ignore. */
+
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: TARGET_WAITKIND_NO_RESUMED "
+ "(ignoring: bg)\n");
+ prepare_to_wait (ecs);
+ return 1;
+ }
}
/* Otherwise, if we were running a synchronous execution command, we
= bpstat_stop_status (get_regcache_aspace (regcache),
stop_pc, ecs->ptid, &ecs->ws);
+ if (handle_stop_requested (ecs))
+ return;
+
if (bpstat_causes_stop (ecs->event_thread->control.stop_bpstat))
{
/* A catchpoint triggered. */
case TARGET_WAITKIND_SPURIOUS:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SPURIOUS\n");
+ if (handle_stop_requested (ecs))
+ return;
if (!ptid_equal (ecs->ptid, inferior_ptid))
context_switch (ecs->ptid);
resume (GDB_SIGNAL_0);
case TARGET_WAITKIND_THREAD_CREATED:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_THREAD_CREATED\n");
+ if (handle_stop_requested (ecs))
+ return;
if (!ptid_equal (ecs->ptid, inferior_ptid))
context_switch (ecs->ptid);
if (!switch_back_to_stepped_thread (ecs))
}
gdb_flush (gdb_stdout);
- target_mourn_inferior ();
+ target_mourn_inferior (inferior_ptid);
stop_print_frame = 0;
stop_waiting (ecs);
return;
= bpstat_stop_status (get_regcache_aspace (get_current_regcache ()),
stop_pc, ecs->ptid, &ecs->ws);
+ if (handle_stop_requested (ecs))
+ return;
+
/* If no catchpoint triggered for this, then keep going. Note
that we're interested in knowing the bpstat actually causes a
stop, not just if it may explain the signal. Software
parent = ecs->ptid;
child = ecs->ws.value.related_pid;
+ /* At this point, the parent is marked running, and the
+ child is marked stopped. */
+
+ /* If not resuming the parent, mark it stopped. */
+ if (follow_child && !detach_fork && !non_stop && !sched_multi)
+ set_running (parent, 0);
+
+ /* If resuming the child, mark it running. */
+ if (follow_child || (!detach_fork && (non_stop || sched_multi)))
+ set_running (child, 1);
+
/* In non-stop mode, also resume the other branch. */
if (!detach_fork && (non_stop
|| (sched_multi && target_is_non_stop_p ())))
current_inferior ()->waiting_for_vfork_done = 0;
current_inferior ()->pspace->breakpoints_not_allowed = 0;
+
+ if (handle_stop_requested (ecs))
+ return;
+
/* This also takes care of reinserting breakpoints in the
previously locked inferior. */
keep_going (ecs);
if (!ptid_equal (ecs->ptid, inferior_ptid))
context_switch (ecs->ptid);
- stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid));
-
/* Do whatever is necessary to the parent branch of the vfork. */
handle_vfork_child_exec_or_exit (1);
stop. */
follow_exec (inferior_ptid, ecs->ws.value.execd_pathname);
+ stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid));
+
/* In follow_exec we may have deleted the original thread and
created a new one. Make sure that the event thread is the
execd thread for that case (this is a nop otherwise). */
xfree (ecs->ws.value.execd_pathname);
ecs->ws.value.execd_pathname = NULL;
+ if (handle_stop_requested (ecs))
+ return;
+
/* If no catchpoint triggered for this, then keep going. */
if (!bpstat_causes_stop (ecs->event_thread->control.stop_bpstat))
{
case TARGET_WAITKIND_STOPPED:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_STOPPED\n");
- ecs->event_thread->suspend.stop_signal = ecs->ws.value.sig;
handle_signal_stop (ecs);
return;
delete_just_stopped_threads_single_step_breakpoints ();
stop_pc = regcache_read_pc (get_thread_regcache (inferior_ptid));
+
+ if (handle_stop_requested (ecs))
+ return;
+
observer_notify_no_history ();
stop_waiting (ecs);
return;
restart_threads (struct thread_info *event_thread)
{
struct thread_info *tp;
- struct thread_info *step_over = NULL;
/* In case the instruction just stepped spawned a new thread. */
update_thread_list ();
continue;
}
+ gdb_assert (!tp->stop_requested);
+
/* If some thread needs to start a step-over at this point, it
should still be in the step-over queue, and thus skipped
above. */
back an event. */
gdb_assert (ecs->event_thread->control.trap_expected);
- if (ecs->event_thread->suspend.stop_signal == GDB_SIGNAL_TRAP)
- clear_step_over_info ();
+ clear_step_over_info ();
}
if (!target_is_non_stop_p ())
gdb_assert (ecs->ws.kind == TARGET_WAITKIND_STOPPED);
+ ecs->event_thread->suspend.stop_signal = ecs->ws.value.sig;
+
/* Do we need to clean up the state of a thread that has
completed a displaced single-step? (Doing so usually affects
the PC, so do it here, before we set stop_pc.) */
{
struct regcache *regcache = get_thread_regcache (ecs->ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- struct cleanup *old_chain = save_inferior_ptid ();
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ecs->ptid;
fprintf_unfiltered (gdb_stdlog,
"infrun: (no data address available)\n");
}
-
- do_cleanups (old_chain);
}
/* This is originated from start_remote(), start_inferior() and
if (random_signal)
random_signal = !stopped_by_watchpoint;
+ /* Always stop if the user explicitly requested this thread to
+ remain stopped. */
+ if (ecs->event_thread->stop_requested)
+ {
+ random_signal = 1;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: user-requested stop\n");
+ }
+
/* For the program's own signals, act according to
the signal handling tables. */
&& ecs->event_thread->control.trap_expected
&& ecs->event_thread->control.step_resume_breakpoint == NULL)
{
- int was_in_line;
-
/* We were just starting a new sequence, attempting to
single-step off of a breakpoint and expecting a SIGTRAP.
Instead this signal arrives. This signal will take us out
"infrun: signal arrived while stepping over "
"breakpoint\n");
- was_in_line = step_over_info_valid_p ();
- clear_step_over_info ();
insert_hp_step_resume_breakpoint_at_frame (frame);
ecs->event_thread->step_after_step_resume_breakpoint = 1;
/* Reset trap_expected to ensure breakpoints are re-inserted. */
ecs->event_thread->control.trap_expected = 0;
- if (target_is_non_stop_p ())
- {
- /* Either "set non-stop" is "on", or the target is
- always in non-stop mode. In this case, we have a bit
- more work to do. Resume the current thread, and if
- we had paused all threads, restart them while the
- signal handler runs. */
- keep_going (ecs);
-
- if (was_in_line)
- {
- restart_threads (ecs->event_thread);
- }
- else if (debug_infrun)
- {
- fprintf_unfiltered (gdb_stdlog,
- "infrun: no need to restart threads\n");
- }
- return;
- }
-
/* If we were nexting/stepping some other thread, switch to
it, so that we don't continue it, losing control. */
if (!switch_back_to_stepped_thread (ecs))
{
/* Set up a step-resume breakpoint at the address
indicated by SKIP_SOLIB_RESOLVER. */
- struct symtab_and_line sr_sal;
-
- init_sal (&sr_sal);
+ symtab_and_line sr_sal;
sr_sal.pc = pc_after_resolver;
sr_sal.pspace = get_frame_program_space (frame);
if (real_stop_pc)
{
/* And put the step-breakpoint there and go until there. */
- struct symtab_and_line sr_sal;
-
- init_sal (&sr_sal); /* initialize to zeroes */
+ symtab_and_line sr_sal;
sr_sal.pc = real_stop_pc;
sr_sal.section = find_pc_overlay (sr_sal.pc);
sr_sal.pspace = get_frame_program_space (frame);
to the caller. */
if (ecs->stop_func_start != stop_pc && ecs->stop_func_start != 0)
{
- struct symtab_and_line sr_sal;
-
/* Normal function call return (static or dynamic). */
- init_sal (&sr_sal);
+ symtab_and_line sr_sal;
sr_sal.pc = ecs->stop_func_start;
sr_sal.pspace = get_frame_program_space (frame);
insert_step_resume_breakpoint_at_sal (gdbarch,
if (real_stop_pc != 0 && in_solib_dynsym_resolve_code (real_stop_pc))
{
- struct symtab_and_line sr_sal;
-
- init_sal (&sr_sal);
+ symtab_and_line sr_sal;
sr_sal.pc = ecs->stop_func_start;
sr_sal.pspace = get_frame_program_space (frame);
tmp_sal = find_pc_line (ecs->stop_func_start, 0);
if (tmp_sal.line != 0
&& !function_name_is_marked_for_skip (ecs->stop_func_name,
- &tmp_sal))
+ tmp_sal))
{
if (execution_direction == EXEC_REVERSE)
handle_step_into_function_backward (gdbarch, ecs);
{
/* Set a breakpoint at callee's start address.
From there we can step once and be back in the caller. */
- struct symtab_and_line sr_sal;
-
- init_sal (&sr_sal);
+ symtab_and_line sr_sal;
sr_sal.pc = ecs->stop_func_start;
sr_sal.pspace = get_frame_program_space (frame);
insert_step_resume_breakpoint_at_sal (gdbarch,
/* Stepped backward into the solib dynsym resolver.
Set a breakpoint at its start and continue, then
one more step will take us out. */
- struct symtab_and_line sr_sal;
-
- init_sal (&sr_sal);
+ symtab_and_line sr_sal;
sr_sal.pc = ecs->stop_func_start;
sr_sal.pspace = get_frame_program_space (frame);
insert_step_resume_breakpoint_at_sal (gdbarch,
ecs->event_thread->control.step_frame_id)
&& inline_skipped_frames (ecs->ptid))
{
- struct symtab_and_line call_sal;
-
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: stepped into inlined function\n");
- find_frame_sal (get_current_frame (), &call_sal);
+ symtab_and_line call_sal = find_frame_sal (get_current_frame ());
if (ecs->event_thread->control.step_over_calls != STEP_OVER_ALL)
{
keep_going_stepped_thread (struct thread_info *tp)
{
struct frame_info *frame;
- struct gdbarch *gdbarch;
struct execution_control_state ecss;
struct execution_control_state *ecs = &ecss;
stop_pc = regcache_read_pc (get_thread_regcache (tp->ptid));
frame = get_current_frame ();
- gdbarch = get_frame_arch (frame);
/* If the PC of the thread we were trying to single-step has
changed, then that thread has trapped or been signaled, but the
handle_step_into_function (struct gdbarch *gdbarch,
struct execution_control_state *ecs)
{
- struct compunit_symtab *cust;
- struct symtab_and_line stop_func_sal, sr_sal;
-
fill_in_stop_func (gdbarch, ecs);
- cust = find_pc_compunit_symtab (stop_pc);
+ compunit_symtab *cust = find_pc_compunit_symtab (stop_pc);
if (cust != NULL && compunit_language (cust) != language_asm)
- ecs->stop_func_start = gdbarch_skip_prologue (gdbarch,
- ecs->stop_func_start);
+ ecs->stop_func_start
+ = gdbarch_skip_prologue_noexcept (gdbarch, ecs->stop_func_start);
- stop_func_sal = find_pc_line (ecs->stop_func_start, 0);
+ symtab_and_line stop_func_sal = find_pc_line (ecs->stop_func_start, 0);
/* Use the step_resume_break to step until the end of the prologue,
even if that involves jumps (as it seems to on the vax under
4.2). */
else
{
/* Put the step-breakpoint there and go until there. */
- init_sal (&sr_sal); /* initialize to zeroes */
+ symtab_and_line sr_sal;
sr_sal.pc = ecs->stop_func_start;
sr_sal.section = find_pc_overlay (ecs->stop_func_start);
sr_sal.pspace = get_frame_program_space (get_current_frame ());
cust = find_pc_compunit_symtab (stop_pc);
if (cust != NULL && compunit_language (cust) != language_asm)
- ecs->stop_func_start = gdbarch_skip_prologue (gdbarch,
- ecs->stop_func_start);
+ ecs->stop_func_start
+ = gdbarch_skip_prologue_noexcept (gdbarch, ecs->stop_func_start);
stop_func_sal = find_pc_line (stop_pc, 0);
static void
insert_hp_step_resume_breakpoint_at_frame (struct frame_info *return_frame)
{
- struct symtab_and_line sr_sal;
- struct gdbarch *gdbarch;
-
gdb_assert (return_frame != NULL);
- init_sal (&sr_sal); /* initialize to zeros */
- gdbarch = get_frame_arch (return_frame);
+ struct gdbarch *gdbarch = get_frame_arch (return_frame);
+
+ symtab_and_line sr_sal;
sr_sal.pc = gdbarch_addr_bits_remove (gdbarch, get_frame_pc (return_frame));
sr_sal.section = find_pc_overlay (sr_sal.pc);
sr_sal.pspace = get_frame_program_space (return_frame);
static void
insert_step_resume_breakpoint_at_caller (struct frame_info *next_frame)
{
- struct symtab_and_line sr_sal;
- struct gdbarch *gdbarch;
-
/* We shouldn't have gotten here if we don't know where the call site
is. */
gdb_assert (frame_id_p (frame_unwind_caller_id (next_frame)));
- init_sal (&sr_sal); /* initialize to zeros */
+ struct gdbarch *gdbarch = frame_unwind_caller_arch (next_frame);
- gdbarch = frame_unwind_caller_arch (next_frame);
+ symtab_and_line sr_sal;
sr_sal.pc = gdbarch_addr_bits_remove (gdbarch,
frame_unwind_caller_pc (next_frame));
sr_sal.section = find_pc_overlay (sr_sal.pc);
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stop_waiting\n");
- clear_step_over_info ();
-
/* Let callers know we don't want to wait for the inferior anymore. */
ecs->wait_some_more = 0;
&& (remove_wps || !use_displaced_stepping (ecs->event_thread)))
{
set_step_over_info (get_regcache_aspace (regcache),
- regcache_read_pc (regcache), remove_wps);
+ regcache_read_pc (regcache), remove_wps,
+ ecs->event_thread->global_num);
}
else if (remove_wps)
- set_step_over_info (NULL, 0, remove_wps);
+ set_step_over_info (NULL, 0, remove_wps, -1);
/* If we now need to do an in-line step-over, we need to stop
all other threads. Note this must be done before
{
/* For CLI-like interpreters, print nothing. */
- if (ui_out_is_mi_like_p (uiout))
+ if (uiout->is_mi_like_p ())
{
- ui_out_field_string (uiout, "reason",
+ uiout->field_string ("reason",
async_reason_lookup (EXEC_ASYNC_END_STEPPING_RANGE));
}
}
print_signal_exited_reason (struct ui_out *uiout, enum gdb_signal siggnal)
{
annotate_signalled ();
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason", async_reason_lookup (EXEC_ASYNC_EXITED_SIGNALLED));
- ui_out_text (uiout, "\nProgram terminated with signal ");
+ if (uiout->is_mi_like_p ())
+ uiout->field_string
+ ("reason", async_reason_lookup (EXEC_ASYNC_EXITED_SIGNALLED));
+ uiout->text ("\nProgram terminated with signal ");
annotate_signal_name ();
- ui_out_field_string (uiout, "signal-name",
+ uiout->field_string ("signal-name",
gdb_signal_to_name (siggnal));
annotate_signal_name_end ();
- ui_out_text (uiout, ", ");
+ uiout->text (", ");
annotate_signal_string ();
- ui_out_field_string (uiout, "signal-meaning",
+ uiout->field_string ("signal-meaning",
gdb_signal_to_string (siggnal));
annotate_signal_string_end ();
- ui_out_text (uiout, ".\n");
- ui_out_text (uiout, "The program no longer exists.\n");
+ uiout->text (".\n");
+ uiout->text ("The program no longer exists.\n");
}
void
annotate_exited (exitstatus);
if (exitstatus)
{
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_EXITED));
- ui_out_text (uiout, "[Inferior ");
- ui_out_text (uiout, plongest (inf->num));
- ui_out_text (uiout, " (");
- ui_out_text (uiout, pidstr);
- ui_out_text (uiout, ") exited with code ");
- ui_out_field_fmt (uiout, "exit-code", "0%o", (unsigned int) exitstatus);
- ui_out_text (uiout, "]\n");
+ if (uiout->is_mi_like_p ())
+ uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXITED));
+ uiout->text ("[Inferior ");
+ uiout->text (plongest (inf->num));
+ uiout->text (" (");
+ uiout->text (pidstr);
+ uiout->text (") exited with code ");
+ uiout->field_fmt ("exit-code", "0%o", (unsigned int) exitstatus);
+ uiout->text ("]\n");
}
else
{
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason", async_reason_lookup (EXEC_ASYNC_EXITED_NORMALLY));
- ui_out_text (uiout, "[Inferior ");
- ui_out_text (uiout, plongest (inf->num));
- ui_out_text (uiout, " (");
- ui_out_text (uiout, pidstr);
- ui_out_text (uiout, ") exited normally]\n");
+ if (uiout->is_mi_like_p ())
+ uiout->field_string
+ ("reason", async_reason_lookup (EXEC_ASYNC_EXITED_NORMALLY));
+ uiout->text ("[Inferior ");
+ uiout->text (plongest (inf->num));
+ uiout->text (" (");
+ uiout->text (pidstr);
+ uiout->text (") exited normally]\n");
}
}
+/* Some targets/architectures can do extra processing/display of
+ segmentation faults. E.g., Intel MPX boundary faults.
+ Call the architecture dependent function to handle the fault. */
+
+static void
+handle_segmentation_fault (struct ui_out *uiout)
+{
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+
+ if (gdbarch_handle_segmentation_fault_p (gdbarch))
+ gdbarch_handle_segmentation_fault (gdbarch, uiout);
+}
+
void
print_signal_received_reason (struct ui_out *uiout, enum gdb_signal siggnal)
{
+ struct thread_info *thr = inferior_thread ();
+
annotate_signal ();
- if (siggnal == GDB_SIGNAL_0 && !ui_out_is_mi_like_p (uiout))
+ if (uiout->is_mi_like_p ())
+ ;
+ else if (show_thread_that_caused_stop ())
{
- struct thread_info *t = inferior_thread ();
+ const char *name;
- ui_out_text (uiout, "\n[");
- ui_out_field_string (uiout, "thread-name",
- target_pid_to_str (t->ptid));
- ui_out_field_fmt (uiout, "thread-id", "] #%s", print_thread_id (t));
- ui_out_text (uiout, " stopped");
+ uiout->text ("\nThread ");
+ uiout->field_fmt ("thread-id", "%s", print_thread_id (thr));
+
+ name = thr->name != NULL ? thr->name : target_thread_name (thr);
+ if (name != NULL)
+ {
+ uiout->text (" \"");
+ uiout->field_fmt ("name", "%s", name);
+ uiout->text ("\"");
+ }
}
+ else
+ uiout->text ("\nProgram");
+
+ if (siggnal == GDB_SIGNAL_0 && !uiout->is_mi_like_p ())
+ uiout->text (" stopped");
else
{
- ui_out_text (uiout, "\nProgram received signal ");
+ uiout->text (" received signal ");
annotate_signal_name ();
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason", async_reason_lookup (EXEC_ASYNC_SIGNAL_RECEIVED));
- ui_out_field_string (uiout, "signal-name",
- gdb_signal_to_name (siggnal));
+ if (uiout->is_mi_like_p ())
+ uiout->field_string
+ ("reason", async_reason_lookup (EXEC_ASYNC_SIGNAL_RECEIVED));
+ uiout->field_string ("signal-name", gdb_signal_to_name (siggnal));
annotate_signal_name_end ();
- ui_out_text (uiout, ", ");
+ uiout->text (", ");
annotate_signal_string ();
- ui_out_field_string (uiout, "signal-meaning",
- gdb_signal_to_string (siggnal));
+ uiout->field_string ("signal-meaning", gdb_signal_to_string (siggnal));
+
+ if (siggnal == GDB_SIGNAL_SEGV)
+ handle_segmentation_fault (uiout);
+
annotate_signal_string_end ();
}
- ui_out_text (uiout, ".\n");
+ uiout->text (".\n");
}
void
print_no_history_reason (struct ui_out *uiout)
{
- ui_out_text (uiout, "\nNo more reverse-execution history.\n");
+ uiout->text ("\nNo more reverse-execution history.\n");
}
/* Print current location without a level number, if we have changed
print_stack_frame (get_selected_frame (NULL), 0, source_flag, 1);
}
-/* Cleanup that restores a previous current uiout. */
-
-static void
-restore_current_uiout_cleanup (void *arg)
-{
- struct ui_out *saved_uiout = (struct ui_out *) arg;
-
- current_uiout = saved_uiout;
-}
-
/* See infrun.h. */
void
print_stop_event (struct ui_out *uiout)
{
- struct cleanup *old_chain;
struct target_waitstatus last;
ptid_t last_ptid;
struct thread_info *tp;
get_last_target_status (&last_ptid, &last);
- old_chain = make_cleanup (restore_current_uiout_cleanup, current_uiout);
- current_uiout = uiout;
-
- print_stop_location (&last);
+ {
+ scoped_restore save_uiout = make_scoped_restore (¤t_uiout, uiout);
- /* Display the auto-display expressions. */
- do_displays ();
+ print_stop_location (&last);
- do_cleanups (old_chain);
+ /* Display the auto-display expressions. */
+ do_displays ();
+ }
tp = inferior_thread ();
if (tp->thread_fsm != NULL
/* Take a strong reference so that the thread can't be deleted
yet. */
sc->thread = inferior_thread ();
- sc->thread->refcount++;
+ sc->thread->incref ();
}
else
sc->thread = NULL;
struct stop_context *sc = (struct stop_context *) arg;
if (sc->thread != NULL)
- sc->thread->refcount--;
+ sc->thread->decref ();
xfree (sc);
}
&& last.kind != TARGET_WAITKIND_EXITED
&& last.kind != TARGET_WAITKIND_NO_RESUMED)
{
- target_terminal_ours_for_output ();
- printf_filtered (_("[Switching to %s]\n"),
- target_pid_to_str (inferior_ptid));
- annotate_thread_changed ();
+ SWITCH_THRU_ALL_UIS ()
+ {
+ target_terminal_ours_for_output ();
+ printf_filtered (_("[Switching to %s]\n"),
+ target_pid_to_str (inferior_ptid));
+ annotate_thread_changed ();
+ }
previous_inferior_ptid = inferior_ptid;
}
if (last.kind == TARGET_WAITKIND_NO_RESUMED)
{
- gdb_assert (sync_execution || !target_can_async_p ());
-
- target_terminal_ours_for_output ();
- printf_filtered (_("No unwaited-for children left.\n"));
+ SWITCH_THRU_ALL_UIS ()
+ if (current_ui->prompt_state == PROMPT_BLOCKED)
+ {
+ target_terminal_ours_for_output ();
+ printf_filtered (_("No unwaited-for children left.\n"));
+ }
}
/* Note: this depends on the update_thread_list call above. */
if (stopped_by_random_signal)
disable_current_display ();
- target_terminal_ours ();
- async_enable_stdin ();
+ SWITCH_THRU_ALL_UIS ()
+ {
+ async_enable_stdin ();
+ }
/* Let the user/frontend see the threads as stopped. */
do_cleanups (old_chain);
static void
handle_command (char *args, int from_tty)
{
- char **argv;
int digits, wordlen;
int sigfirst, signum, siglast;
enum gdb_signal oursig;
int allsigs;
int nsigs;
unsigned char *sigs;
- struct cleanup *old_chain;
if (args == NULL)
{
/* Break the command line up into args. */
- argv = gdb_buildargv (args);
- old_chain = make_cleanup_freeargv (argv);
+ gdb_argv built_argv (args);
/* Walk through the args, looking for signal oursigs, signal names, and
actions. Signal numbers and signal names may be interspersed with
actions, with the actions being performed for all signals cumulatively
specified. Signal ranges can be specified as <LOW>-<HIGH>. */
- while (*argv != NULL)
+ for (char *arg : built_argv)
{
- wordlen = strlen (*argv);
- for (digits = 0; isdigit ((*argv)[digits]); digits++)
+ wordlen = strlen (arg);
+ for (digits = 0; isdigit (arg[digits]); digits++)
{;
}
allsigs = 0;
sigfirst = siglast = -1;
- if (wordlen >= 1 && !strncmp (*argv, "all", wordlen))
+ if (wordlen >= 1 && !strncmp (arg, "all", wordlen))
{
/* Apply action to all signals except those used by the
debugger. Silently skip those. */
sigfirst = 0;
siglast = nsigs - 1;
}
- else if (wordlen >= 1 && !strncmp (*argv, "stop", wordlen))
+ else if (wordlen >= 1 && !strncmp (arg, "stop", wordlen))
{
SET_SIGS (nsigs, sigs, signal_stop);
SET_SIGS (nsigs, sigs, signal_print);
}
- else if (wordlen >= 1 && !strncmp (*argv, "ignore", wordlen))
+ else if (wordlen >= 1 && !strncmp (arg, "ignore", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_program);
}
- else if (wordlen >= 2 && !strncmp (*argv, "print", wordlen))
+ else if (wordlen >= 2 && !strncmp (arg, "print", wordlen))
{
SET_SIGS (nsigs, sigs, signal_print);
}
- else if (wordlen >= 2 && !strncmp (*argv, "pass", wordlen))
+ else if (wordlen >= 2 && !strncmp (arg, "pass", wordlen))
{
SET_SIGS (nsigs, sigs, signal_program);
}
- else if (wordlen >= 3 && !strncmp (*argv, "nostop", wordlen))
+ else if (wordlen >= 3 && !strncmp (arg, "nostop", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_stop);
}
- else if (wordlen >= 3 && !strncmp (*argv, "noignore", wordlen))
+ else if (wordlen >= 3 && !strncmp (arg, "noignore", wordlen))
{
SET_SIGS (nsigs, sigs, signal_program);
}
- else if (wordlen >= 4 && !strncmp (*argv, "noprint", wordlen))
+ else if (wordlen >= 4 && !strncmp (arg, "noprint", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_print);
UNSET_SIGS (nsigs, sigs, signal_stop);
}
- else if (wordlen >= 4 && !strncmp (*argv, "nopass", wordlen))
+ else if (wordlen >= 4 && !strncmp (arg, "nopass", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_program);
}
SIGHUP, SIGINT, SIGALRM, etc. will work right anyway. */
sigfirst = siglast = (int)
- gdb_signal_from_command (atoi (*argv));
- if ((*argv)[digits] == '-')
+ gdb_signal_from_command (atoi (arg));
+ if (arg[digits] == '-')
{
siglast = (int)
- gdb_signal_from_command (atoi ((*argv) + digits + 1));
+ gdb_signal_from_command (atoi (arg + digits + 1));
}
if (sigfirst > siglast)
{
}
else
{
- oursig = gdb_signal_from_name (*argv);
+ oursig = gdb_signal_from_name (arg);
if (oursig != GDB_SIGNAL_UNKNOWN)
{
sigfirst = siglast = (int) oursig;
else
{
/* Not a number and not a recognized flag word => complain. */
- error (_("Unrecognized or ambiguous flag word: \"%s\"."), *argv);
+ error (_("Unrecognized or ambiguous flag word: \"%s\"."), arg);
}
}
break;
}
}
-
- argv++;
}
for (signum = 0; signum < nsigs; signum++)
break;
}
-
- do_cleanups (old_chain);
}
/* Complete the "handle" command. */
-static VEC (char_ptr) *
+static void
handle_completer (struct cmd_list_element *ignore,
+ completion_tracker &tracker,
const char *text, const char *word)
{
- VEC (char_ptr) *vec_signals, *vec_keywords, *return_val;
static const char * const keywords[] =
{
"all",
NULL,
};
- vec_signals = signal_completer (ignore, text, word);
- vec_keywords = complete_on_enum (keywords, word, word);
-
- return_val = VEC_merge (char_ptr, vec_signals, vec_keywords);
- VEC_free (char_ptr, vec_signals);
- VEC_free (char_ptr, vec_keywords);
- return return_val;
+ signal_completer (ignore, tracker, text, word);
+ complete_on_enum (tracker, keywords, word, word);
}
enum gdb_signal
targets, all signals should be in the signal tables). */
static void
-signals_info (char *signum_exp, int from_tty)
+info_signals_command (char *signum_exp, int from_tty)
{
enum gdb_signal oursig;
xfree (inf_status);
}
\f
-/* restore_inferior_ptid() will be used by the cleanup machinery
- to restore the inferior_ptid value saved in a call to
- save_inferior_ptid(). */
-
-static void
-restore_inferior_ptid (void *arg)
-{
- ptid_t *saved_ptid_ptr = (ptid_t *) arg;
-
- inferior_ptid = *saved_ptid_ptr;
- xfree (arg);
-}
-
-/* Save the value of inferior_ptid so that it may be restored by a
- later call to do_cleanups(). Returns the struct cleanup pointer
- needed for later doing the cleanup. */
-
-struct cleanup *
-save_inferior_ptid (void)
-{
- ptid_t *saved_ptid_ptr = XNEW (ptid_t);
-
- *saved_ptid_ptr = inferior_ptid;
- return make_cleanup (restore_inferior_ptid, saved_ptid_ptr);
-}
-
/* See infrun.h. */
void
infrun_async_inferior_event_token
= create_async_event_handler (infrun_async_inferior_event_handler, NULL);
- add_info ("signals", signals_info, _("\
+ add_info ("signals", info_signals_command, _("\
What debugger does when program gets various signals.\n\
Specify a signal as argument to print info on that signal only."));
add_info_alias ("handle", "signals", 0);
signal_print[GDB_SIGNAL_WAITING] = 0;
signal_stop[GDB_SIGNAL_CANCEL] = 0;
signal_print[GDB_SIGNAL_CANCEL] = 0;
+ signal_stop[GDB_SIGNAL_LIBRT] = 0;
+ signal_print[GDB_SIGNAL_LIBRT] = 0;
/* Update cached state. */
signal_cache_update (-1);
projects / deliverable / binutils-gdb.git / blobdiff