/* Target-struct-independent code to start (run) and stop an inferior
process.
- Copyright (C) 1986-2019 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "frame.h"
#include "inferior.h"
#include "breakpoint.h"
-#include "gdb_wait.h"
#include "gdbcore.h"
#include "gdbcmd.h"
-#include "cli/cli-script.h"
#include "target.h"
#include "gdbthread.h"
#include "annotate.h"
#include "symfile.h"
#include "top.h"
-#include <signal.h>
#include "inf-loop.h"
#include "regcache.h"
#include "value.h"
#include "language.h"
#include "solib.h"
#include "main.h"
-#include "dictionary.h"
#include "block.h"
#include "mi/mi-common.h"
#include "event-top.h"
#include "inline-frame.h"
#include "jit.h"
#include "tracepoint.h"
-#include "continuations.h"
-#include "interps.h"
#include "skip.h"
#include "probe.h"
#include "objfiles.h"
#include "solist.h"
#include "event-loop.h"
#include "thread-fsm.h"
-#include "common/enum-flags.h"
+#include "gdbsupport/enum-flags.h"
#include "progspace-and-thread.h"
-#include "common/gdb_optional.h"
+#include "gdbsupport/gdb_optional.h"
#include "arch-utils.h"
+#include "gdbsupport/scope-exit.h"
+#include "gdbsupport/forward-scope-exit.h"
+#include "gdb_select.h"
+#include <unordered_map>
/* Prototypes for local functions */
static int currently_stepping (struct thread_info *tp);
-void nullify_last_target_wait_ptid (void);
-
static void insert_hp_step_resume_breakpoint_at_frame (struct frame_info *);
static void insert_step_resume_breakpoint_at_caller (struct frame_info *);
static void resume (gdb_signal sig);
+static void wait_for_inferior (inferior *inf);
+
/* Asynchronous signal handler registered as event loop source for
when we have pending events ready to be passed to the core. */
static struct async_event_handler *infrun_async_inferior_event_token;
/* When set, stop the 'step' command if we enter a function which has
no line number information. The normal behavior is that we step
over such function. */
-int step_stop_if_no_debug = 0;
+bool step_stop_if_no_debug = false;
static void
show_step_stop_if_no_debug (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
Exactly which branch is detached depends on 'set follow-fork-mode'
setting. */
-static int detach_fork = 1;
+static bool detach_fork = true;
-int debug_displaced = 0;
+bool debug_displaced = false;
static void
show_debug_displaced (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
/* Support for disabling address space randomization. */
-int disable_randomization = 1;
+bool disable_randomization = true;
static void
show_disable_randomization (struct ui_file *file, int from_tty,
/* User interface for non-stop mode. */
-int non_stop = 0;
-static int non_stop_1 = 0;
+bool non_stop = false;
+static bool non_stop_1 = false;
static void
set_non_stop (const char *args, int from_tty,
non-stop, in which all GDB operations that might affect the
target's execution have been disabled. */
-int observer_mode = 0;
-static int observer_mode_1 = 0;
+bool observer_mode = false;
+static bool observer_mode_1 = false;
static void
set_observer_mode (const char *args, int from_tty,
/* We can insert fast tracepoints in or out of observer mode,
but enable them if we're going into this mode. */
if (observer_mode)
- may_insert_fast_tracepoints = 1;
+ may_insert_fast_tracepoints = true;
may_stop = !observer_mode;
update_target_permissions ();
if (observer_mode)
{
pagination_enabled = 0;
- non_stop = non_stop_1 = 1;
+ non_stop = non_stop_1 = true;
}
if (from_tty)
void
update_observer_mode (void)
{
- int newval;
-
- newval = (!may_insert_breakpoints
- && !may_insert_tracepoints
- && may_insert_fast_tracepoints
- && !may_stop
- && non_stop);
+ bool newval = (!may_insert_breakpoints
+ && !may_insert_tracepoints
+ && may_insert_fast_tracepoints
+ && !may_stop
+ && non_stop);
/* Let the user know if things change. */
if (newval != observer_mode)
/* Tables of how to react to signals; the user sets them. */
-static unsigned char *signal_stop;
-static unsigned char *signal_print;
-static unsigned char *signal_program;
+static unsigned char signal_stop[GDB_SIGNAL_LAST];
+static unsigned char signal_print[GDB_SIGNAL_LAST];
+static unsigned char signal_program[GDB_SIGNAL_LAST];
/* Table of signals that are registered with "catch signal". A
non-zero entry indicates that the signal is caught by some "catch
- signal" command. This has size GDB_SIGNAL_LAST, to accommodate all
- signals. */
-static unsigned char *signal_catch;
+ signal" command. */
+static unsigned char signal_catch[GDB_SIGNAL_LAST];
/* Table of signals that the target may silently handle.
This is automatically determined from the flags above,
and simply cached here. */
-static unsigned char *signal_pass;
+static unsigned char signal_pass[GDB_SIGNAL_LAST];
#define SET_SIGS(nsigs,sigs,flags) \
do { \
void
update_signals_program_target (void)
{
- target_program_signals ((int) GDB_SIGNAL_LAST, signal_program);
+ target_program_signals (signal_program);
}
/* Value to pass to target_resume() to cause all threads to resume. */
static int stop_print_frame;
-/* This is a cached copy of the pid/waitstatus of the last event
- returned by target_wait()/deprecated_target_wait_hook(). This
- information is returned by get_last_target_status(). */
+/* This is a cached copy of the target/ptid/waitstatus of the last
+ event returned by target_wait()/deprecated_target_wait_hook().
+ This information is returned by get_last_target_status(). */
+static process_stratum_target *target_last_proc_target;
static ptid_t target_last_wait_ptid;
static struct target_waitstatus target_last_waitstatus;
Can not resume the parent process over vfork in the foreground while\n\
holding the child stopped. Try \"set detach-on-fork\" or \
\"set schedule-multiple\".\n"));
- /* FIXME output string > 80 columns. */
return 1;
}
fprintf_filtered (gdb_stdlog,
_("[Detaching after %s from child %s]\n"),
has_vforked ? "vfork" : "fork",
- target_pid_to_str (process_ptid));
+ target_pid_to_str (process_ptid).c_str ());
}
}
else
scoped_restore_current_pspace_and_thread restore_pspace_thread;
- inferior_ptid = child_ptid;
- add_thread_silent (inferior_ptid);
set_current_inferior (child_inf);
+ switch_to_no_thread ();
child_inf->symfile_flags = SYMFILE_NO_READ;
+ push_target (parent_inf->process_target ());
+ add_thread_silent (child_inf->process_target (), child_ptid);
+ inferior_ptid = child_ptid;
/* If this is a vfork child, then the address-space is
shared with the parent. */
child_inf->pspace = parent_inf->pspace;
child_inf->aspace = parent_inf->aspace;
+ exec_on_vfork ();
+
/* The parent will be frozen until the child is done
with the shared region. Keep track of the
parent. */
parent_pspace = parent_inf->pspace;
- /* If we're vforking, we want to hold on to the parent until the
- child exits or execs. At child exec or exit time we can
- remove the old breakpoints from the parent and detach or
- resume debugging it. Otherwise, detach the parent now; we'll
- want to reuse it's program/address spaces, but we can't set
- them to the child before removing breakpoints from the
- parent, otherwise, the breakpoints module could decide to
- remove breakpoints from the wrong process (since they'd be
- assigned to the same address space). */
+ process_stratum_target *target = parent_inf->process_target ();
- if (has_vforked)
- {
- gdb_assert (child_inf->vfork_parent == NULL);
- gdb_assert (parent_inf->vfork_child == NULL);
- child_inf->vfork_parent = parent_inf;
- child_inf->pending_detach = 0;
- parent_inf->vfork_child = child_inf;
- parent_inf->pending_detach = detach_fork;
- parent_inf->waiting_for_vfork_done = 0;
- }
- else if (detach_fork)
- {
- if (print_inferior_events)
- {
- /* Ensure that we have a process ptid. */
- ptid_t process_ptid = ptid_t (parent_ptid.pid ());
+ {
+ /* Hold a strong reference to the target while (maybe)
+ detaching the parent. Otherwise detaching could close the
+ target. */
+ auto target_ref = target_ops_ref::new_reference (target);
+
+ /* If we're vforking, we want to hold on to the parent until
+ the child exits or execs. At child exec or exit time we
+ can remove the old breakpoints from the parent and detach
+ or resume debugging it. Otherwise, detach the parent now;
+ we'll want to reuse it's program/address spaces, but we
+ can't set them to the child before removing breakpoints
+ from the parent, otherwise, the breakpoints module could
+ decide to remove breakpoints from the wrong process (since
+ they'd be assigned to the same address space). */
+
+ if (has_vforked)
+ {
+ gdb_assert (child_inf->vfork_parent == NULL);
+ gdb_assert (parent_inf->vfork_child == NULL);
+ child_inf->vfork_parent = parent_inf;
+ child_inf->pending_detach = 0;
+ parent_inf->vfork_child = child_inf;
+ parent_inf->pending_detach = detach_fork;
+ parent_inf->waiting_for_vfork_done = 0;
+ }
+ else if (detach_fork)
+ {
+ if (print_inferior_events)
+ {
+ /* Ensure that we have a process ptid. */
+ ptid_t process_ptid = ptid_t (parent_ptid.pid ());
+
+ target_terminal::ours_for_output ();
+ fprintf_filtered (gdb_stdlog,
+ _("[Detaching after fork from "
+ "parent %s]\n"),
+ target_pid_to_str (process_ptid).c_str ());
+ }
- target_terminal::ours_for_output ();
- fprintf_filtered (gdb_stdlog,
- _("[Detaching after fork from "
- "parent %s]\n"),
- target_pid_to_str (process_ptid));
- }
+ target_detach (parent_inf, 0);
+ parent_inf = NULL;
+ }
- target_detach (parent_inf, 0);
- }
+ /* Note that the detach above makes PARENT_INF dangling. */
- /* Note that the detach above makes PARENT_INF dangling. */
+ /* Add the child thread to the appropriate lists, and switch
+ to this new thread, before cloning the program space, and
+ informing the solib layer about this new process. */
- /* Add the child thread to the appropriate lists, and switch to
- this new thread, before cloning the program space, and
- informing the solib layer about this new process. */
+ set_current_inferior (child_inf);
+ push_target (target);
+ }
+ add_thread_silent (target, child_ptid);
inferior_ptid = child_ptid;
- add_thread_silent (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
{
child_inf->pspace = parent_pspace;
child_inf->aspace = child_inf->pspace->aspace;
+
+ exec_on_vfork ();
}
else
{
if (!non_stop)
{
+ process_stratum_target *wait_target;
ptid_t wait_ptid;
struct target_waitstatus wait_status;
/* Get the last target status returned by target_wait(). */
- get_last_target_status (&wait_ptid, &wait_status);
+ get_last_target_status (&wait_target, &wait_ptid, &wait_status);
/* If not stopped at a fork event, then there's nothing else to
do. */
/* Check if we switched over from WAIT_PTID, since the event was
reported. */
if (wait_ptid != minus_one_ptid
- && inferior_ptid != wait_ptid)
+ && (current_inferior ()->process_target () != wait_target
+ || inferior_ptid != wait_ptid))
{
/* We did. Switch back to WAIT_PTID thread, to tell the
target to follow it (in either direction). We'll
afterwards refuse to resume, and inform the user what
happened. */
- thread_info *wait_thread
- = find_thread_ptid (wait_ptid);
+ thread_info *wait_thread = find_thread_ptid (wait_target, wait_ptid);
switch_to_thread (wait_thread);
should_resume = 0;
}
parent = inferior_ptid;
child = tp->pending_follow.value.related_pid;
+ process_stratum_target *parent_targ = tp->inf->process_target ();
/* Set up inferior(s) as specified by the caller, and tell the
target to do whatever is necessary to follow either parent
or child. */
or another. The previous selected thread may be gone
from the lists by now, but if it is still around, need
to clear the pending follow request. */
- tp = find_thread_ptid (parent);
+ tp = find_thread_ptid (parent_targ, parent);
if (tp)
tp->pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
/* If we followed the child, switch to it... */
if (follow_child)
{
- thread_info *child_thr = find_thread_ptid (child);
+ thread_info *child_thr = find_thread_ptid (parent_targ, child);
switch_to_thread (child_thr);
/* ... and preserve the stepping state, in case the
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: resuming vfork parent thread %s\n",
- target_pid_to_str (thread->ptid));
+ target_pid_to_str (thread->ptid).c_str ());
switch_to_thread (thread);
clear_proceed_status (0);
int resume_parent = -1;
/* This exec or exit marks the end of the shared memory region
- between the parent and the child. If the user wanted to
- detach from the parent, now is the time. */
+ between the parent and the child. Break the bonds. */
+ inferior *vfork_parent = inf->vfork_parent;
+ inf->vfork_parent->vfork_child = NULL;
+ inf->vfork_parent = NULL;
- if (inf->vfork_parent->pending_detach)
+ /* If the user wanted to detach from the parent, now is the
+ time. */
+ if (vfork_parent->pending_detach)
{
struct thread_info *tp;
struct program_space *pspace;
/* follow-fork child, detach-on-fork on. */
- inf->vfork_parent->pending_detach = 0;
+ vfork_parent->pending_detach = 0;
gdb::optional<scoped_restore_exited_inferior>
maybe_restore_inferior;
maybe_restore_thread.emplace ();
/* We're letting loose of the parent. */
- tp = any_live_thread_of_inferior (inf->vfork_parent);
+ tp = any_live_thread_of_inferior (vfork_parent);
switch_to_thread (tp);
/* We're about to detach from the parent, which implicitly
if (print_inferior_events)
{
- const char *pidstr
- = target_pid_to_str (ptid_t (inf->vfork_parent->pid));
+ std::string pidstr
+ = target_pid_to_str (ptid_t (vfork_parent->pid));
target_terminal::ours_for_output ();
{
fprintf_filtered (gdb_stdlog,
_("[Detaching vfork parent %s "
- "after child exec]\n"), pidstr);
+ "after child exec]\n"), pidstr.c_str ());
}
else
{
fprintf_filtered (gdb_stdlog,
_("[Detaching vfork parent %s "
- "after child exit]\n"), pidstr);
+ "after child exit]\n"), pidstr.c_str ());
}
}
- target_detach (inf->vfork_parent, 0);
+ target_detach (vfork_parent, 0);
/* Put it back. */
inf->pspace = pspace;
inf->removable = 1;
set_current_program_space (inf->pspace);
- resume_parent = inf->vfork_parent->pid;
-
- /* Break the bonds. */
- inf->vfork_parent->vfork_child = NULL;
+ resume_parent = vfork_parent->pid;
}
else
{
set_current_program_space (pspace);
inf->removable = 1;
inf->symfile_flags = SYMFILE_NO_READ;
- clone_program_space (pspace, inf->vfork_parent->pspace);
+ clone_program_space (pspace, vfork_parent->pspace);
inf->pspace = pspace;
inf->aspace = pspace->aspace;
- resume_parent = inf->vfork_parent->pid;
- /* Break the bonds. */
- inf->vfork_parent->vfork_child = NULL;
+ resume_parent = vfork_parent->pid;
}
- inf->vfork_parent = NULL;
-
gdb_assert (current_program_space == inf->pspace);
if (non_stop && resume_parent != -1)
/* EXEC_FILE_TARGET is assumed to be non-NULL. */
static void
-follow_exec (ptid_t ptid, char *exec_file_target)
+follow_exec (ptid_t ptid, const char *exec_file_target)
{
struct inferior *inf = current_inferior ();
int pid = ptid.pid ();
ptid_t process_ptid;
+ /* Switch terminal for any messages produced e.g. by
+ breakpoint_re_set. */
+ target_terminal::ours_for_output ();
+
/* 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
momentary bp's, etc.
And, we DON'T want to call delete_breakpoints() here, since
that may write the bp's "shadow contents" (the instruction
- value that was overwritten witha TRAP instruction). Since
+ value that was overwritten with a TRAP instruction). Since
we now have a new a.out, those shadow contents aren't valid. */
mark_breakpoints_out ();
/* What is this a.out's name? */
process_ptid = ptid_t (pid);
printf_unfiltered (_("%s is executing new program: %s\n"),
- target_pid_to_str (process_ptid),
+ target_pid_to_str (process_ptid).c_str (),
exec_file_target);
/* We've followed the inferior through an exec. Therefore, the
inferior has essentially been killed & reborn. */
- gdb_flush (gdb_stdout);
-
breakpoint_init_inferior (inf_execd);
gdb::unique_xmalloc_ptr<char> exec_file_host
inf->pid = pid;
target_follow_exec (inf, exec_file_target);
- set_current_inferior (inf);
- set_current_program_space (inf->pspace);
- add_thread (ptid);
+ inferior *org_inferior = current_inferior ();
+ switch_to_inferior_no_thread (inf);
+ push_target (org_inferior->process_target ());
+ thread_info *thr = add_thread (inf->process_target (), ptid);
+ switch_to_thread (thr);
}
else
{
register contents, and memory. We use this in step n1.
- gdbarch_displaced_step_fixup adjusts registers and memory after
- we have successfuly single-stepped the instruction, to yield the
+ we have successfully single-stepped the instruction, to yield the
same effect the instruction would have had if we had executed it
at its original address. We use this in step n3.
displaced_step_closure::~displaced_step_closure () = default;
-/* Per-inferior displaced stepping state. */
-struct displaced_step_inferior_state
-{
- /* The process this displaced step state refers to. */
- inferior *inf;
-
- /* True if preparing a displaced step ever failed. If so, we won't
- try displaced stepping for this inferior again. */
- int failed_before;
-
- /* If this is not nullptr, this is the thread carrying out a
- displaced single-step in process PID. This thread's state will
- require fixing up once it has completed its step. */
- thread_info *step_thread;
-
- /* The architecture the thread had when we stepped it. */
- struct gdbarch *step_gdbarch;
-
- /* The closure provided gdbarch_displaced_step_copy_insn, to be used
- for post-step cleanup. */
- struct displaced_step_closure *step_closure;
-
- /* The address of the original instruction, and the copy we
- made. */
- CORE_ADDR step_original, step_copy;
-
- /* Saved contents of copy area. */
- gdb_byte *step_saved_copy;
-};
-
-/* The list of states of processes involved in displaced stepping
- presently. */
-static std::forward_list<displaced_step_inferior_state *>
- displaced_step_inferior_states;
-
/* Get the displaced stepping state of process PID. */
static displaced_step_inferior_state *
get_displaced_stepping_state (inferior *inf)
{
- for (auto *state : displaced_step_inferior_states)
- {
- if (state->inf == inf)
- return state;
- }
-
- return nullptr;
+ return &inf->displaced_step_state;
}
/* Returns true if any inferior has a thread doing a displaced
static bool
displaced_step_in_progress_any_inferior ()
{
- for (auto *state : displaced_step_inferior_states)
+ for (inferior *i : all_inferiors ())
{
- if (state->step_thread != nullptr)
+ if (i->displaced_step_state.step_thread != nullptr)
return true;
}
static int
displaced_step_in_progress_thread (thread_info *thread)
{
- struct displaced_step_inferior_state *displaced;
-
gdb_assert (thread != NULL);
- displaced = get_displaced_stepping_state (thread->inf);
-
- return (displaced != NULL && displaced->step_thread == thread);
+ return get_displaced_stepping_state (thread->inf)->step_thread == thread;
}
/* Return true if process PID has a thread doing a displaced step. */
static int
displaced_step_in_progress (inferior *inf)
{
- struct displaced_step_inferior_state *displaced;
-
- displaced = get_displaced_stepping_state (inf);
- if (displaced != NULL && displaced->step_thread != nullptr)
- return 1;
-
- return 0;
-}
-
-/* Add a new displaced stepping state for process PID to the displaced
- stepping state list, or return a pointer to an already existing
- entry, if it already exists. Never returns NULL. */
-
-static displaced_step_inferior_state *
-add_displaced_stepping_state (inferior *inf)
-{
- displaced_step_inferior_state *state
- = get_displaced_stepping_state (inf);
-
- if (state != nullptr)
- return state;
-
- state = XCNEW (struct displaced_step_inferior_state);
- state->inf = inf;
-
- displaced_step_inferior_states.push_front (state);
-
- return state;
+ return get_displaced_stepping_state (inf)->step_thread != nullptr;
}
/* If inferior is in displaced stepping, and ADDR equals to starting address
struct displaced_step_closure*
get_displaced_step_closure_by_addr (CORE_ADDR addr)
{
- struct displaced_step_inferior_state *displaced
+ displaced_step_inferior_state *displaced
= get_displaced_stepping_state (current_inferior ());
/* If checking the mode of displaced instruction in copy area. */
- if (displaced != NULL
- && displaced->step_thread != nullptr
+ if (displaced->step_thread != nullptr
&& displaced->step_copy == addr)
return displaced->step_closure;
return NULL;
}
-/* Remove the displaced stepping state of process PID. */
-
-static void
-remove_displaced_stepping_state (inferior *inf)
-{
- gdb_assert (inf != nullptr);
-
- displaced_step_inferior_states.remove_if
- ([inf] (displaced_step_inferior_state *state)
- {
- if (state->inf == inf)
- {
- xfree (state);
- return true;
- }
- else
- return false;
- });
-}
-
static void
infrun_inferior_exit (struct inferior *inf)
{
- remove_displaced_stepping_state (inf);
+ inf->displaced_step_state.reset ();
}
/* If ON, and the architecture supports it, GDB will use displaced
{
struct regcache *regcache = get_thread_regcache (tp);
struct gdbarch *gdbarch = regcache->arch ();
- struct displaced_step_inferior_state *displaced_state;
-
- displaced_state = get_displaced_stepping_state (tp->inf);
+ displaced_step_inferior_state *displaced_state
+ = get_displaced_stepping_state (tp->inf);
return (((can_use_displaced_stepping == AUTO_BOOLEAN_AUTO
&& target_is_non_stop_p ())
|| can_use_displaced_stepping == AUTO_BOOLEAN_TRUE)
&& gdbarch_displaced_step_copy_insn_p (gdbarch)
&& find_record_target () == NULL
- && (displaced_state == NULL
- || !displaced_state->failed_before));
+ && !displaced_state->failed_before);
}
/* Clean out any stray displaced stepping state. */
displaced->step_closure = NULL;
}
-static void
-displaced_step_clear_cleanup (void *arg)
-{
- struct displaced_step_inferior_state *state
- = (struct displaced_step_inferior_state *) arg;
-
- displaced_step_clear (state);
-}
+/* A cleanup that wraps displaced_step_clear. */
+using displaced_step_clear_cleanup
+ = FORWARD_SCOPE_EXIT (displaced_step_clear);
/* Dump LEN bytes at BUF in hex to FILE, followed by a newline. */
void
static int
displaced_step_prepare_throw (thread_info *tp)
{
- struct cleanup *ignore_cleanups;
regcache *regcache = get_thread_regcache (tp);
struct gdbarch *gdbarch = regcache->arch ();
const address_space *aspace = regcache->aspace ();
CORE_ADDR original, copy;
ULONGEST len;
struct displaced_step_closure *closure;
- struct displaced_step_inferior_state *displaced;
int status;
/* We should never reach this function if the architecture does not
/* We have to displaced step one thread at a time, as we only have
access to a single scratch space per inferior. */
- displaced = add_displaced_stepping_state (tp->inf);
+ displaced_step_inferior_state *displaced
+ = get_displaced_stepping_state (tp->inf);
if (displaced->step_thread != nullptr)
{
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog,
"displaced: deferring step of %s\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
thread_step_over_chain_enqueue (tp);
return 0;
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog,
"displaced: stepping %s now\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
}
displaced_step_clear (displaced);
}
/* Save the original contents of the copy area. */
- displaced->step_saved_copy = (gdb_byte *) xmalloc (len);
- ignore_cleanups = make_cleanup (free_current_contents,
- &displaced->step_saved_copy);
- status = target_read_memory (copy, displaced->step_saved_copy, len);
+ displaced->step_saved_copy.resize (len);
+ status = target_read_memory (copy, displaced->step_saved_copy.data (), len);
if (status != 0)
throw_error (MEMORY_ERROR,
_("Error accessing memory address %s (%s) for "
fprintf_unfiltered (gdb_stdlog, "displaced: saved %s: ",
paddress (gdbarch, copy));
displaced_step_dump_bytes (gdb_stdlog,
- displaced->step_saved_copy,
+ displaced->step_saved_copy.data (),
len);
};
/* 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 (ignore_cleanups);
return -1;
}
displaced->step_original = original;
displaced->step_copy = copy;
- make_cleanup (displaced_step_clear_cleanup, displaced);
+ {
+ displaced_step_clear_cleanup cleanup (displaced);
- /* Resume execution at the copy. */
- regcache_write_pc (regcache, copy);
+ /* Resume execution at the copy. */
+ regcache_write_pc (regcache, copy);
- discard_cleanups (ignore_cleanups);
+ cleanup.release ();
+ }
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog, "displaced: displaced pc to %s\n",
{
int prepared = -1;
- TRY
+ try
{
prepared = displaced_step_prepare_throw (thread);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
struct displaced_step_inferior_state *displaced_state;
if (ex.error != MEMORY_ERROR
&& ex.error != NOT_SUPPORTED_ERROR)
- throw_exception (ex);
+ throw;
if (debug_infrun)
{
fprintf_unfiltered (gdb_stdlog,
"infrun: disabling displaced stepping: %s\n",
- ex.message);
+ ex.what ());
}
/* Be verbose if "set displaced-stepping" is "on", silent if
if (can_use_displaced_stepping == AUTO_BOOLEAN_TRUE)
{
warning (_("disabling displaced stepping: %s"),
- ex.message);
+ ex.what ());
}
/* Disable further displaced stepping attempts. */
= get_displaced_stepping_state (thread->inf);
displaced_state->failed_before = 1;
}
- END_CATCH
return prepared;
}
ULONGEST len = gdbarch_max_insn_length (displaced->step_gdbarch);
write_memory_ptid (ptid, displaced->step_copy,
- displaced->step_saved_copy, len);
+ displaced->step_saved_copy.data (), len);
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog, "displaced: restored %s %s\n",
- target_pid_to_str (ptid),
+ target_pid_to_str (ptid).c_str (),
paddress (displaced->step_gdbarch,
displaced->step_copy));
}
static int
displaced_step_fixup (thread_info *event_thread, enum gdb_signal signal)
{
- struct cleanup *old_cleanups;
struct displaced_step_inferior_state *displaced
= get_displaced_stepping_state (event_thread->inf);
int ret;
- /* Was any thread of this process doing a displaced step? */
- if (displaced == NULL)
- return 0;
-
/* Was this event for the thread we displaced? */
if (displaced->step_thread != event_thread)
return 0;
- old_cleanups = make_cleanup (displaced_step_clear_cleanup, displaced);
+ displaced_step_clear_cleanup cleanup (displaced);
displaced_step_restore (displaced, displaced->step_thread->ptid);
ret = -1;
}
- do_cleanups (old_cleanups);
-
- displaced->step_thread = nullptr;
-
return ret;
}
discarded between events. */
struct execution_control_state
{
+ process_stratum_target *target;
ptid_t ptid;
/* The thread that got the event, if this was a thread event; NULL
otherwise. */
internal_error (__FILE__, __LINE__,
"[%s] has inconsistent state: "
"trap_expected=%d, resumed=%d, executing=%d\n",
- target_pid_to_str (tp->ptid),
+ target_pid_to_str (tp->ptid).c_str (),
tp->control.trap_expected,
tp->resumed,
tp->executing);
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: resuming [%s] for step-over\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
/* keep_going_pass_signal skips the step-over if the breakpoint
is no longer inserted. In all-stop, we want to keep looking
/* True if execution commands resume all threads of all processes by
default; otherwise, resume only threads of the current inferior
process. */
-int sched_multi = 0;
+bool sched_multi = false;
/* Try to setup for software single stepping over the specified location.
Return 1 if target_resume() should use hardware single step.
return resume_ptid;
}
+/* See infrun.h. */
+
+process_stratum_target *
+user_visible_resume_target (ptid_t resume_ptid)
+{
+ return (resume_ptid == minus_one_ptid && sched_multi
+ ? NULL
+ : current_inferior ()->process_target ());
+}
+
/* Return a ptid representing the set of threads that we will resume,
in the perspective of the target, assuming run control handling
does not require leaving some threads stopped (e.g., stepping past
valid. */
if (step_over_info_valid_p ()
|| displaced_step_in_progress (tp->inf))
- target_pass_signals (0, NULL);
+ target_pass_signals ({});
else
- target_pass_signals ((int) GDB_SIGNAL_LAST, signal_pass);
+ target_pass_signals (signal_pass);
target_resume (resume_ptid, step, sig);
target_commit_resume ();
+
+ if (target_can_async_p ())
+ target_async (1);
}
/* Resume the inferior. SIG is the signal to give the inferior
fprintf_unfiltered (gdb_stdlog,
"infrun: resume: thread %s has pending wait "
"status %s (currently_stepping=%d).\n",
- target_pid_to_str (tp->ptid), statstr.c_str (),
+ target_pid_to_str (tp->ptid).c_str (),
+ statstr.c_str (),
currently_stepping (tp));
}
+ tp->inf->process_target ()->threads_executing = true;
tp->resumed = 1;
/* FIXME: What should we do if we are supposed to resume this
if (sig != GDB_SIGNAL_0)
{
warning (_("Couldn't deliver signal %s to %s."),
- gdb_signal_to_name (sig), target_pid_to_str (tp->ptid));
+ gdb_signal_to_name (sig),
+ target_pid_to_str (tp->ptid).c_str ());
}
tp->suspend.stop_signal = GDB_SIGNAL_0;
"trap_expected=%d, current thread [%s] at %s\n",
step, gdb_signal_to_symbol_string (sig),
tp->control.trap_expected,
- target_pid_to_str (inferior_ptid),
+ target_pid_to_str (inferior_ptid).c_str (),
paddress (gdbarch, pc));
/* Normally, by the time we reach `resume', the breakpoints are either
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: resume: [%s] stepped breakpoint\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
tp->stepped_breakpoint = 1;
static void
resume (gdb_signal sig)
{
- TRY
+ try
{
resume_1 (sig);
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
/* If resuming is being aborted for any reason, delete any
single-step breakpoint resume_1 may have created, to avoid
we're running in non-stop mode. */
if (inferior_ptid != null_ptid)
delete_single_step_breakpoints (inferior_thread ());
- throw_exception (ex);
+ throw;
}
- END_CATCH
}
\f
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: clear_proceed_status_thread (%s)\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
/* If we're starting a new sequence, then the previous finished
single-step is no longer relevant. */
"infrun: clear_proceed_status: pending "
"event of %s was a finished step. "
"Discarding.\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
tp->suspend.waitstatus_pending_p = 0;
tp->suspend.stop_reason = TARGET_STOPPED_BY_NO_REASON;
"infrun: clear_proceed_status_thread: thread %s "
"has pending wait status %s "
"(currently_stepping=%d).\n",
- target_pid_to_str (tp->ptid), statstr.c_str (),
+ target_pid_to_str (tp->ptid).c_str (),
+ statstr.c_str (),
currently_stepping (tp));
}
}
if (!signal_pass_state (tp->suspend.stop_signal))
tp->suspend.stop_signal = GDB_SIGNAL_0;
- thread_fsm_delete (tp->thread_fsm);
+ delete tp->thread_fsm;
tp->thread_fsm = NULL;
tp->control.trap_expected = 0;
if (!non_stop && inferior_ptid != null_ptid)
{
ptid_t resume_ptid = user_visible_resume_ptid (step);
+ process_stratum_target *resume_target
+ = user_visible_resume_target (resume_ptid);
/* In all-stop mode, delete the per-thread status of all threads
we're about to resume, implicitly and explicitly. */
- for (thread_info *tp : all_non_exited_threads (resume_ptid))
+ for (thread_info *tp : all_non_exited_threads (resume_target, resume_ptid))
clear_proceed_status_thread (tp);
}
execution_direction)));
}
+/* Calls target_commit_resume on all targets. */
+
+static void
+commit_resume_all_targets ()
+{
+ scoped_restore_current_thread restore_thread;
+
+ /* Map between process_target and a representative inferior. This
+ is to avoid committing a resume in the same target more than
+ once. Resumptions must be idempotent, so this is an
+ optimization. */
+ std::unordered_map<process_stratum_target *, inferior *> conn_inf;
+
+ for (inferior *inf : all_non_exited_inferiors ())
+ if (inf->has_execution ())
+ conn_inf[inf->process_target ()] = inf;
+
+ for (const auto &ci : conn_inf)
+ {
+ inferior *inf = ci.second;
+ switch_to_inferior_no_thread (inf);
+ target_commit_resume ();
+ }
+}
+
/* Basic routine for continuing the program in various fashions.
ADDR is the address to resume at, or -1 for resume where stopped.
struct regcache *regcache;
struct gdbarch *gdbarch;
CORE_ADDR pc;
- ptid_t resume_ptid;
struct execution_control_state ecss;
struct execution_control_state *ecs = &ecss;
int started;
gdb_assert (!thread_is_in_step_over_chain (cur_thr));
+ ptid_t resume_ptid
+ = user_visible_resume_ptid (cur_thr->control.stepping_command);
+ process_stratum_target *resume_target
+ = user_visible_resume_target (resume_ptid);
+
if (addr == (CORE_ADDR) -1)
{
if (pc == cur_thr->suspend.stop_pc
if (siggnal != GDB_SIGNAL_DEFAULT)
cur_thr->suspend.stop_signal = siggnal;
- resume_ptid = user_visible_resume_ptid (cur_thr->control.stepping_command);
-
/* If an exception is thrown from this point on, make sure to
propagate GDB's knowledge of the executing state to the
frontend/user running state. */
- scoped_finish_thread_state finish_state (resume_ptid);
+ scoped_finish_thread_state finish_state (resume_target, resume_ptid);
/* Even if RESUME_PTID is a wildcard, and we end up resuming fewer
threads (e.g., we might need to set threads stepping over
inferior function, as in that case we pretend the inferior
doesn't run at all. */
if (!cur_thr->control.in_infcall)
- set_running (resume_ptid, 1);
+ set_running (resume_target, resume_ptid, 1);
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
threads. */
if (!non_stop && !schedlock_applies (cur_thr))
{
- for (thread_info *tp : all_non_exited_threads (resume_ptid))
+ for (thread_info *tp : all_non_exited_threads (resume_target,
+ resume_ptid))
{
+ switch_to_thread_no_regs (tp);
+
/* Ignore the current thread here. It's handled
afterwards. */
if (tp == cur_thr)
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: need to step-over [%s] first\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
thread_step_over_chain_enqueue (tp);
}
+
+ switch_to_thread (cur_thr);
}
/* Enqueue the current thread last, so that we move all other
{
/* In all-stop, but the target is always in non-stop mode.
Start all other threads that are implicitly resumed too. */
- for (thread_info *tp : all_non_exited_threads (resume_ptid))
- {
+ for (thread_info *tp : all_non_exited_threads (resume_target,
+ resume_ptid))
+ {
+ switch_to_thread_no_regs (tp);
+
+ if (!tp->inf->has_execution ())
+ {
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: proceed: [%s] target has "
+ "no execution\n",
+ target_pid_to_str (tp->ptid).c_str ());
+ continue;
+ }
+
if (tp->resumed)
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: proceed: [%s] resumed\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
gdb_assert (tp->executing || tp->suspend.waitstatus_pending_p);
continue;
}
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: proceed: [%s] needs step-over\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
continue;
}
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: proceed: resuming %s\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
reset_ecs (ecs, tp);
switch_to_thread (tp);
}
}
- target_commit_resume ();
+ commit_resume_all_targets ();
finish_state.release ();
+ /* If we've switched threads above, switch back to the previously
+ current thread. We don't want the user to see a different
+ selected thread. */
+ switch_to_thread (cur_thr);
+
/* Tell the event loop to wait for it to stop. If the target
supports asynchronous execution, it'll do this from within
target_resume. */
void
start_remote (int from_tty)
{
- struct inferior *inferior;
-
- inferior = current_inferior ();
- inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
+ inferior *inf = current_inferior ();
+ inf->control.stop_soon = STOP_QUIETLY_REMOTE;
/* Always go on waiting for the target, regardless of the mode. */
/* FIXME: cagney/1999-09-23: At present it isn't possible to
target_open() return to the caller an indication that the target
is currently running and GDB state should be set to the same as
for an async run. */
- wait_for_inferior ();
+ wait_for_inferior (inf);
/* Now that the inferior has stopped, do any bookkeeping like
loading shared libraries. We want to do this before normal_stop,
clear_proceed_status (0);
- target_last_wait_ptid = minus_one_ptid;
+ nullify_last_target_wait_ptid ();
previous_inferior_ptid = inferior_ptid;
}
static void
infrun_thread_stop_requested (ptid_t ptid)
{
+ process_stratum_target *curr_target = current_inferior ()->process_target ();
+
/* 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. */
- for (thread_info *tp : all_threads (ptid))
+ for (thread_info *tp : all_threads (curr_target, ptid))
{
if (tp->state != THREAD_RUNNING)
continue;
/* Clear the inline-frame state, since we're re-processing the
stop. */
- clear_inline_frame_state (tp->ptid);
+ clear_inline_frame_state (tp);
/* If this thread was paused because some other thread was
doing an inline-step over, let that finish first. Once
static void
infrun_thread_thread_exit (struct thread_info *tp, int silent)
{
- if (target_last_wait_ptid == tp->ptid)
+ if (target_last_proc_target == tp->inf->process_target ()
+ && target_last_wait_ptid == tp->ptid)
nullify_last_target_wait_ptid ();
}
for_each_just_stopped_thread (delete_single_step_breakpoints);
}
-/* A cleanup wrapper. */
-
-static void
-delete_just_stopped_threads_infrun_breakpoints_cleanup (void *arg)
-{
- delete_just_stopped_threads_infrun_breakpoints ();
-}
-
/* See infrun.h. */
void
waiton_ptid.lwp (),
waiton_ptid.tid ());
if (waiton_ptid.pid () != -1)
- stb.printf (" [%s]", target_pid_to_str (waiton_ptid));
+ stb.printf (" [%s]", target_pid_to_str (waiton_ptid).c_str ());
stb.printf (", status) =\n");
stb.printf ("infrun: %d.%ld.%ld [%s],\n",
result_ptid.pid (),
result_ptid.lwp (),
result_ptid.tid (),
- target_pid_to_str (result_ptid));
+ target_pid_to_str (result_ptid).c_str ());
stb.printf ("infrun: %s\n", status_string.c_str ());
/* This uses %s in part to handle %'s in the text, but also to avoid
had events. */
static struct thread_info *
-random_pending_event_thread (ptid_t waiton_ptid)
+random_pending_event_thread (inferior *inf, ptid_t waiton_ptid)
{
int num_events = 0;
- auto has_event = [] (thread_info *tp)
+ auto has_event = [&] (thread_info *tp)
{
- return (tp->resumed
+ return (tp->ptid.matches (waiton_ptid)
+ && tp->resumed
&& tp->suspend.waitstatus_pending_p);
};
/* First see how many events we have. Count only resumed threads
that have an event pending. */
- for (thread_info *tp : all_non_exited_threads (waiton_ptid))
+ for (thread_info *tp : inf->non_exited_threads ())
if (has_event (tp))
num_events++;
num_events, random_selector);
/* Select the Nth thread that has had an event. */
- for (thread_info *tp : all_non_exited_threads (waiton_ptid))
+ for (thread_info *tp : inf->non_exited_threads ())
if (has_event (tp))
if (random_selector-- == 0)
return tp;
/* Wrapper for target_wait that first checks whether threads have
pending statuses to report before actually asking the target for
- more events. */
+ more events. INF is the inferior we're using to call target_wait
+ on. */
static ptid_t
-do_target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
+do_target_wait_1 (inferior *inf, ptid_t ptid,
+ target_waitstatus *status, int options)
{
ptid_t event_ptid;
struct thread_info *tp;
pending. */
if (ptid == minus_one_ptid || ptid.is_pid ())
{
- tp = random_pending_event_thread (ptid);
+ tp = random_pending_event_thread (inf, ptid);
}
else
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: Waiting for specific thread %s.\n",
- target_pid_to_str (ptid));
+ target_pid_to_str (ptid).c_str ());
/* We have a specific thread to check. */
- tp = find_thread_ptid (ptid);
+ tp = find_thread_ptid (inf, ptid);
gdb_assert (tp != NULL);
if (!tp->suspend.waitstatus_pending_p)
tp = NULL;
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: PC of %s changed. was=%s, now=%s\n",
- target_pid_to_str (tp->ptid),
+ target_pid_to_str (tp->ptid).c_str (),
paddress (gdbarch, tp->suspend.stop_pc),
paddress (gdbarch, pc));
discard = 1;
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: previous breakpoint of %s, at %s gone\n",
- target_pid_to_str (tp->ptid),
+ target_pid_to_str (tp->ptid).c_str (),
paddress (gdbarch, pc));
discard = 1;
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: pending event of %s cancelled.\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
tp->suspend.waitstatus.kind = TARGET_WAITKIND_SPURIOUS;
tp->suspend.stop_reason = TARGET_STOPPED_BY_NO_REASON;
fprintf_unfiltered (gdb_stdlog,
"infrun: Using pending wait status %s for %s.\n",
statstr.c_str (),
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
}
/* Now that we've selected our final event LWP, un-adjust its PC
return event_ptid;
}
+/* Returns true if INF has any resumed thread with a status
+ pending. */
+
+static bool
+threads_are_resumed_pending_p (inferior *inf)
+{
+ for (thread_info *tp : inf->non_exited_threads ())
+ if (tp->resumed
+ && tp->suspend.waitstatus_pending_p)
+ return true;
+
+ return false;
+}
+
+/* Wrapper for target_wait that first checks whether threads have
+ pending statuses to report before actually asking the target for
+ more events. Polls for events from all inferiors/targets. */
+
+static bool
+do_target_wait (ptid_t wait_ptid, execution_control_state *ecs, int options)
+{
+ int num_inferiors = 0;
+ int random_selector;
+
+ /* For fairness, we pick the first inferior/target to poll at
+ random, and then continue polling the rest of the inferior list
+ starting from that one in a circular fashion until the whole list
+ is polled once. */
+
+ auto inferior_matches = [&wait_ptid] (inferior *inf)
+ {
+ return (inf->process_target () != NULL
+ && (threads_are_executing (inf->process_target ())
+ || threads_are_resumed_pending_p (inf))
+ && ptid_t (inf->pid).matches (wait_ptid));
+ };
+
+ /* First see how many resumed inferiors we have. */
+ for (inferior *inf : all_inferiors ())
+ if (inferior_matches (inf))
+ num_inferiors++;
+
+ if (num_inferiors == 0)
+ {
+ ecs->ws.kind = TARGET_WAITKIND_IGNORE;
+ return false;
+ }
+
+ /* Now randomly pick an inferior out of those that were resumed. */
+ random_selector = (int)
+ ((num_inferiors * (double) rand ()) / (RAND_MAX + 1.0));
+
+ if (debug_infrun && num_inferiors > 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: Found %d inferiors, starting at #%d\n",
+ num_inferiors, random_selector);
+
+ /* Select the Nth inferior that was resumed. */
+
+ inferior *selected = nullptr;
+
+ for (inferior *inf : all_inferiors ())
+ if (inferior_matches (inf))
+ if (random_selector-- == 0)
+ {
+ selected = inf;
+ break;
+ }
+
+ /* Now poll for events out of each of the resumed inferior's
+ targets, starting from the selected one. */
+
+ auto do_wait = [&] (inferior *inf)
+ {
+ switch_to_inferior_no_thread (inf);
+
+ ecs->ptid = do_target_wait_1 (inf, wait_ptid, &ecs->ws, options);
+ ecs->target = inf->process_target ();
+ return (ecs->ws.kind != TARGET_WAITKIND_IGNORE);
+ };
+
+ /* Needed in all-stop+target-non-stop mode, because we end up here
+ spuriously after the target is all stopped and we've already
+ reported the stop to the user, polling for events. */
+ scoped_restore_current_thread restore_thread;
+
+ int inf_num = selected->num;
+ for (inferior *inf = selected; inf != NULL; inf = inf->next)
+ if (inferior_matches (inf))
+ if (do_wait (inf))
+ return true;
+
+ for (inferior *inf = inferior_list;
+ inf != NULL && inf->num < inf_num;
+ inf = inf->next)
+ if (inferior_matches (inf))
+ if (do_wait (inf))
+ return true;
+
+ ecs->ws.kind = TARGET_WAITKIND_IGNORE;
+ return false;
+}
+
/* Prepare and stabilize the inferior for detaching it. E.g.,
detaching while a thread is displaced stepping is a recipe for
crashing it, as nothing would readjust the PC out of the scratch
/* Is any thread of this process displaced stepping? If not,
there's nothing else to do. */
- if (displaced == NULL || displaced->step_thread == nullptr)
+ if (displaced->step_thread == nullptr)
return;
if (debug_infrun)
don't get any event. */
target_dcache_invalidate ();
- ecs->ptid = do_target_wait (pid_ptid, &ecs->ws, 0);
+ do_target_wait (pid_ptid, ecs, 0);
if (debug_infrun)
print_target_wait_results (pid_ptid, ecs->ptid, &ecs->ws);
/* If an error happens while handling the event, propagate GDB's
knowledge of the executing state to the frontend/user running
state. */
- scoped_finish_thread_state finish_state (minus_one_ptid);
+ scoped_finish_thread_state finish_state (inf->process_target (),
+ minus_one_ptid);
/* Now figure out what to do with the result of the result. */
handle_inferior_event (ecs);
When this function actually returns it means the inferior
should be left stopped and GDB should read more commands. */
-void
-wait_for_inferior (void)
+static void
+wait_for_inferior (inferior *inf)
{
- struct cleanup *old_cleanups;
-
if (debug_infrun)
fprintf_unfiltered
(gdb_stdlog, "infrun: wait_for_inferior ()\n");
- old_cleanups
- = make_cleanup (delete_just_stopped_threads_infrun_breakpoints_cleanup,
- NULL);
+ SCOPE_EXIT { delete_just_stopped_threads_infrun_breakpoints (); };
/* If an error happens while handling the event, propagate GDB's
knowledge of the executing state to the frontend/user running
state. */
- scoped_finish_thread_state finish_state (minus_one_ptid);
+ scoped_finish_thread_state finish_state
+ (inf->process_target (), minus_one_ptid);
while (1)
{
struct execution_control_state ecss;
struct execution_control_state *ecs = &ecss;
- ptid_t waiton_ptid = minus_one_ptid;
memset (ecs, 0, sizeof (*ecs));
don't get any event. */
target_dcache_invalidate ();
- ecs->ptid = do_target_wait (waiton_ptid, &ecs->ws, 0);
+ ecs->ptid = do_target_wait_1 (inf, minus_one_ptid, &ecs->ws, 0);
+ ecs->target = inf->process_target ();
if (debug_infrun)
- print_target_wait_results (waiton_ptid, ecs->ptid, &ecs->ws);
+ print_target_wait_results (minus_one_ptid, ecs->ptid, &ecs->ws);
/* Now figure out what to do with the result of the result. */
handle_inferior_event (ecs);
/* No error, don't finish the state yet. */
finish_state.release ();
-
- do_cleanups (old_cleanups);
}
/* Cleanup that reinstalls the readline callback handler, if the
input. */
static void
-reinstall_readline_callback_handler_cleanup (void *arg)
+reinstall_readline_callback_handler_cleanup ()
{
struct ui *ui = current_ui;
{
if (ecs->event_thread != NULL
&& ecs->event_thread->thread_fsm != NULL)
- thread_fsm_clean_up (ecs->event_thread->thread_fsm,
- ecs->event_thread);
+ ecs->event_thread->thread_fsm->clean_up (ecs->event_thread);
if (!non_stop)
{
continue;
switch_to_thread (thr);
- thread_fsm_clean_up (thr->thread_fsm, thr);
+ thr->thread_fsm->clean_up (thr);
}
if (ecs->event_thread != NULL)
{
struct execution_control_state ecss;
struct execution_control_state *ecs = &ecss;
- struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
int cmd_done = 0;
- ptid_t waiton_ptid = minus_one_ptid;
memset (ecs, 0, sizeof (*ecs));
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);
+ {
+ SCOPE_EXIT { reinstall_readline_callback_handler_cleanup (); };
+
+ /* We're handling a live event, so make sure we're doing live
+ debugging. If we're looking at traceframes while the target is
+ running, we're going to need to get back to that mode after
+ handling the event. */
+ gdb::optional<scoped_restore_current_traceframe> maybe_restore_traceframe;
+ if (non_stop)
+ {
+ maybe_restore_traceframe.emplace ();
+ set_current_traceframe (-1);
+ }
- /* We're handling a live event, so make sure we're doing live
- debugging. If we're looking at traceframes while the target is
- running, we're going to need to get back to that mode after
- handling the event. */
- gdb::optional<scoped_restore_current_traceframe> maybe_restore_traceframe;
- if (non_stop)
- {
- maybe_restore_traceframe.emplace ();
- set_current_traceframe (-1);
- }
+ /* The user/frontend should not notice a thread switch due to
+ internal events. Make sure we revert to the user selected
+ thread and frame after handling the event and running any
+ breakpoint commands. */
+ scoped_restore_current_thread restore_thread;
- gdb::optional<scoped_restore_current_thread> maybe_restore_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 ();
- 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. */
- maybe_restore_thread.emplace ();
+ scoped_restore save_exec_dir
+ = make_scoped_restore (&execution_direction,
+ target_execution_direction ());
- 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 ();
+ if (!do_target_wait (minus_one_ptid, ecs, TARGET_WNOHANG))
+ return;
- scoped_restore save_exec_dir
- = make_scoped_restore (&execution_direction, target_execution_direction ());
+ gdb_assert (ecs->ws.kind != TARGET_WAITKIND_IGNORE);
- ecs->ptid = do_target_wait (waiton_ptid, &ecs->ws,
- target_can_async_p () ? TARGET_WNOHANG : 0);
+ /* Switch to the target that generated the event, so we can do
+ target calls. Any inferior bound to the target will do, so we
+ just switch to the first we find. */
+ for (inferior *inf : all_inferiors (ecs->target))
+ {
+ switch_to_inferior_no_thread (inf);
+ break;
+ }
- if (debug_infrun)
- print_target_wait_results (waiton_ptid, ecs->ptid, &ecs->ws);
+ if (debug_infrun)
+ print_target_wait_results (minus_one_ptid, ecs->ptid, &ecs->ws);
- /* If an error happens while handling the event, propagate GDB's
- knowledge of the executing state to the frontend/user running
- state. */
- ptid_t finish_ptid = !target_is_non_stop_p () ? minus_one_ptid : ecs->ptid;
- scoped_finish_thread_state finish_state (finish_ptid);
+ /* If an error happens while handling the event, propagate GDB's
+ knowledge of the executing state to the frontend/user running
+ state. */
+ ptid_t finish_ptid = !target_is_non_stop_p () ? minus_one_ptid : ecs->ptid;
+ scoped_finish_thread_state finish_state (ecs->target, finish_ptid);
- /* Get executed before make_cleanup_restore_current_thread above to apply
- still for the thread which has thrown the exception. */
- struct cleanup *ts_old_chain = make_bpstat_clear_actions_cleanup ();
+ /* Get executed before scoped_restore_current_thread above to apply
+ still for the thread which has thrown the exception. */
+ auto defer_bpstat_clear
+ = make_scope_exit (bpstat_clear_actions);
+ auto defer_delete_threads
+ = make_scope_exit (delete_just_stopped_threads_infrun_breakpoints);
- make_cleanup (delete_just_stopped_threads_infrun_breakpoints_cleanup, NULL);
+ /* Now figure out what to do with the result of the result. */
+ handle_inferior_event (ecs);
- /* Now figure out what to do with the result of the result. */
- handle_inferior_event (ecs);
+ if (!ecs->wait_some_more)
+ {
+ struct inferior *inf = find_inferior_ptid (ecs->target, ecs->ptid);
+ int should_stop = 1;
+ struct thread_info *thr = ecs->event_thread;
- if (!ecs->wait_some_more)
- {
- struct inferior *inf = find_inferior_ptid (ecs->ptid);
- int should_stop = 1;
- struct thread_info *thr = ecs->event_thread;
+ delete_just_stopped_threads_infrun_breakpoints ();
- delete_just_stopped_threads_infrun_breakpoints ();
+ if (thr != NULL)
+ {
+ struct thread_fsm *thread_fsm = thr->thread_fsm;
- if (thr != NULL)
- {
- struct thread_fsm *thread_fsm = thr->thread_fsm;
+ if (thread_fsm != NULL)
+ should_stop = thread_fsm->should_stop (thr);
+ }
- if (thread_fsm != NULL)
- should_stop = thread_fsm_should_stop (thread_fsm, thr);
- }
+ if (!should_stop)
+ {
+ keep_going (ecs);
+ }
+ else
+ {
+ bool should_notify_stop = true;
+ int proceeded = 0;
- if (!should_stop)
- {
- keep_going (ecs);
- }
- else
- {
- int should_notify_stop = 1;
- int proceeded = 0;
+ clean_up_just_stopped_threads_fsms (ecs);
- clean_up_just_stopped_threads_fsms (ecs);
+ if (thr != NULL && thr->thread_fsm != NULL)
+ should_notify_stop = thr->thread_fsm->should_notify_stop ();
- if (thr != NULL && thr->thread_fsm != NULL)
- {
- should_notify_stop
- = thread_fsm_should_notify_stop (thr->thread_fsm);
- }
+ if (should_notify_stop)
+ {
+ /* We may not find an inferior if this was a process exit. */
+ if (inf == NULL || inf->control.stop_soon == NO_STOP_QUIETLY)
+ proceeded = normal_stop ();
+ }
- if (should_notify_stop)
- {
- /* We may not find an inferior if this was a process exit. */
- if (inf == NULL || inf->control.stop_soon == NO_STOP_QUIETLY)
- proceeded = normal_stop ();
- }
+ if (!proceeded)
+ {
+ inferior_event_handler (INF_EXEC_COMPLETE, NULL);
+ cmd_done = 1;
+ }
- if (!proceeded)
- {
- inferior_event_handler (INF_EXEC_COMPLETE, NULL);
- cmd_done = 1;
- }
- }
- }
+ /* If we got a TARGET_WAITKIND_NO_RESUMED event, then the
+ previously selected thread is gone. We have two
+ choices - switch to no thread selected, or restore the
+ previously selected thread (now exited). We chose the
+ later, just because that's what GDB used to do. After
+ this, "info threads" says "The current thread <Thread
+ ID 2> has terminated." instead of "No thread
+ selected.". */
+ if (!non_stop
+ && cmd_done
+ && ecs->ws.kind != TARGET_WAITKIND_NO_RESUMED)
+ restore_thread.dont_restore ();
+ }
+ }
- discard_cleanups (ts_old_chain);
+ defer_delete_threads.release ();
+ defer_bpstat_clear.release ();
- /* No error, don't finish the thread states yet. */
- finish_state.release ();
+ /* No error, don't finish the thread states yet. */
+ finish_state.release ();
- /* Revert thread and frame. */
- do_cleanups (old_chain);
+ /* This scope is used to ensure that readline callbacks are
+ reinstalled here. */
+ }
/* If a UI was in sync execution mode, and now isn't, restore its
prompt (a synchronous execution command has finished, and we're
tss->step_after_step_resume_breakpoint = 0;
}
-/* Set the cached copy of the last ptid/waitstatus. */
+/* See infrun.h. */
void
-set_last_target_status (ptid_t ptid, struct target_waitstatus status)
+set_last_target_status (process_stratum_target *target, ptid_t ptid,
+ target_waitstatus status)
{
+ target_last_proc_target = target;
target_last_wait_ptid = ptid;
target_last_waitstatus = status;
}
-/* Return the cached copy of the last pid/waitstatus returned by
- target_wait()/deprecated_target_wait_hook(). The data is actually
- cached by handle_inferior_event(), which gets called immediately
- after target_wait()/deprecated_target_wait_hook(). */
+/* See infrun.h. */
void
-get_last_target_status (ptid_t *ptidp, struct target_waitstatus *status)
+get_last_target_status (process_stratum_target **target, ptid_t *ptid,
+ target_waitstatus *status)
{
- *ptidp = target_last_wait_ptid;
- *status = target_last_waitstatus;
+ if (target != nullptr)
+ *target = target_last_proc_target;
+ if (ptid != nullptr)
+ *ptid = target_last_wait_ptid;
+ if (status != nullptr)
+ *status = target_last_waitstatus;
}
+/* See infrun.h. */
+
void
nullify_last_target_wait_ptid (void)
{
+ target_last_proc_target = nullptr;
target_last_wait_ptid = minus_one_ptid;
+ target_last_waitstatus = {};
}
/* Switch thread contexts. */
{
if (debug_infrun
&& ecs->ptid != inferior_ptid
- && ecs->event_thread != inferior_thread ())
+ && (inferior_ptid == null_ptid
+ || ecs->event_thread != inferior_thread ()))
{
fprintf_unfiltered (gdb_stdlog, "infrun: Switching context from %s ",
- target_pid_to_str (inferior_ptid));
+ target_pid_to_str (inferior_ptid).c_str ());
fprintf_unfiltered (gdb_stdlog, "to %s\n",
- target_pid_to_str (ecs->ptid));
+ target_pid_to_str (ecs->ptid).c_str ());
}
switch_to_thread (ecs->event_thread);
return 0;
}
+/* Look for an inline frame that is marked for skip.
+ If PREV_FRAME is TRUE start at the previous frame,
+ otherwise start at the current frame. Stop at the
+ first non-inline frame, or at the frame where the
+ step started. */
+
+static bool
+inline_frame_is_marked_for_skip (bool prev_frame, struct thread_info *tp)
+{
+ struct frame_info *frame = get_current_frame ();
+
+ if (prev_frame)
+ frame = get_prev_frame (frame);
+
+ for (; frame != NULL; frame = get_prev_frame (frame))
+ {
+ const char *fn = NULL;
+ symtab_and_line sal;
+ struct symbol *sym;
+
+ if (frame_id_eq (get_frame_id (frame), tp->control.step_frame_id))
+ break;
+ if (get_frame_type (frame) != INLINE_FRAME)
+ break;
+
+ sal = find_frame_sal (frame);
+ sym = get_frame_function (frame);
+
+ if (sym != NULL)
+ fn = sym->print_name ();
+
+ if (sal.line != 0
+ && function_name_is_marked_for_skip (fn, sal))
+ return true;
+ }
+
+ return false;
+}
+
/* 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). */
{
if (!ecs->stop_func_filled_in)
{
+ const block *block;
+
/* Don't care about return value; stop_func_start and stop_func_name
will both be 0 if it doesn't work. */
- find_function_entry_range_from_pc (ecs->event_thread->suspend.stop_pc,
- &ecs->stop_func_name,
- &ecs->stop_func_start,
- &ecs->stop_func_end);
- ecs->stop_func_start
- += gdbarch_deprecated_function_start_offset (gdbarch);
-
- if (gdbarch_skip_entrypoint_p (gdbarch))
- ecs->stop_func_start = gdbarch_skip_entrypoint (gdbarch,
- ecs->stop_func_start);
+ find_pc_partial_function (ecs->event_thread->suspend.stop_pc,
+ &ecs->stop_func_name,
+ &ecs->stop_func_start,
+ &ecs->stop_func_end,
+ &block);
+
+ /* The call to find_pc_partial_function, above, will set
+ stop_func_start and stop_func_end to the start and end
+ of the range containing the stop pc. If this range
+ contains the entry pc for the block (which is always the
+ case for contiguous blocks), advance stop_func_start past
+ the function's start offset and entrypoint. Note that
+ stop_func_start is NOT advanced when in a range of a
+ non-contiguous block that does not contain the entry pc. */
+ if (block != nullptr
+ && ecs->stop_func_start <= BLOCK_ENTRY_PC (block)
+ && BLOCK_ENTRY_PC (block) < ecs->stop_func_end)
+ {
+ ecs->stop_func_start
+ += gdbarch_deprecated_function_start_offset (gdbarch);
+
+ if (gdbarch_skip_entrypoint_p (gdbarch))
+ ecs->stop_func_start
+ = gdbarch_skip_entrypoint (gdbarch, ecs->stop_func_start);
+ }
ecs->stop_func_filled_in = 1;
}
static enum stop_kind
get_inferior_stop_soon (execution_control_state *ecs)
{
- struct inferior *inf = find_inferior_ptid (ecs->ptid);
+ struct inferior *inf = find_inferior_ptid (ecs->target, ecs->ptid);
gdb_assert (inf != NULL);
return inf->control.stop_soon;
}
-/* Wait for one event. Store the resulting waitstatus in WS, and
- return the event ptid. */
+/* Poll for one event out of the current target. Store the resulting
+ waitstatus in WS, and return the event ptid. Does not block. */
static ptid_t
-wait_one (struct target_waitstatus *ws)
+poll_one_curr_target (struct target_waitstatus *ws)
{
ptid_t event_ptid;
- ptid_t wait_ptid = minus_one_ptid;
overlay_cache_invalid = 1;
target_dcache_invalidate ();
if (deprecated_target_wait_hook)
- event_ptid = deprecated_target_wait_hook (wait_ptid, ws, 0);
+ event_ptid = deprecated_target_wait_hook (minus_one_ptid, ws, TARGET_WNOHANG);
else
- event_ptid = target_wait (wait_ptid, ws, 0);
+ event_ptid = target_wait (minus_one_ptid, ws, TARGET_WNOHANG);
if (debug_infrun)
- print_target_wait_results (wait_ptid, event_ptid, ws);
+ print_target_wait_results (minus_one_ptid, event_ptid, ws);
return event_ptid;
}
+/* An event reported by wait_one. */
+
+struct wait_one_event
+{
+ /* The target the event came out of. */
+ process_stratum_target *target;
+
+ /* The PTID the event was for. */
+ ptid_t ptid;
+
+ /* The waitstatus. */
+ target_waitstatus ws;
+};
+
+/* Wait for one event out of any target. */
+
+static wait_one_event
+wait_one ()
+{
+ while (1)
+ {
+ for (inferior *inf : all_inferiors ())
+ {
+ process_stratum_target *target = inf->process_target ();
+ if (target == NULL
+ || !target->is_async_p ()
+ || !target->threads_executing)
+ continue;
+
+ switch_to_inferior_no_thread (inf);
+
+ wait_one_event event;
+ event.target = target;
+ event.ptid = poll_one_curr_target (&event.ws);
+
+ if (event.ws.kind == TARGET_WAITKIND_NO_RESUMED)
+ {
+ /* If nothing is resumed, remove the target from the
+ event loop. */
+ target_async (0);
+ }
+ else if (event.ws.kind != TARGET_WAITKIND_IGNORE)
+ return event;
+ }
+
+ /* Block waiting for some event. */
+
+ fd_set readfds;
+ int nfds = 0;
+
+ FD_ZERO (&readfds);
+
+ for (inferior *inf : all_inferiors ())
+ {
+ process_stratum_target *target = inf->process_target ();
+ if (target == NULL
+ || !target->is_async_p ()
+ || !target->threads_executing)
+ continue;
+
+ int fd = target->async_wait_fd ();
+ FD_SET (fd, &readfds);
+ if (nfds <= fd)
+ nfds = fd + 1;
+ }
+
+ if (nfds == 0)
+ {
+ /* No waitable targets left. All must be stopped. */
+ return {NULL, minus_one_ptid, {TARGET_WAITKIND_NO_RESUMED}};
+ }
+
+ QUIT;
+
+ int numfds = interruptible_select (nfds, &readfds, 0, NULL, 0);
+ if (numfds < 0)
+ {
+ if (errno == EINTR)
+ continue;
+ else
+ perror_with_name ("interruptible_select");
+ }
+ }
+}
+
/* Generate a wrapper for target_stopped_by_REASON that works on PTID
instead of the current thread. */
#define THREAD_STOPPED_BY(REASON) \
/* Save the thread's event and stop reason to process it later. */
static void
-save_waitstatus (struct thread_info *tp, struct target_waitstatus *ws)
+save_waitstatus (struct thread_info *tp, const target_waitstatus *ws)
{
if (debug_infrun)
{
}
}
-/* A cleanup that disables thread create/exit events. */
-
-static void
-disable_thread_events (void *arg)
-{
- target_thread_events (0);
-}
-
/* See infrun.h. */
void
/* We may need multiple passes to discover all threads. */
int pass;
int iterations = 0;
- struct cleanup *old_chain;
gdb_assert (target_is_non_stop_p ());
scoped_restore_current_thread restore_thread;
target_thread_events (1);
- old_chain = make_cleanup (disable_thread_events, NULL);
+ SCOPE_EXIT { target_thread_events (0); };
/* Request threads to stop, and then wait for the stops. Because
threads we already know about can spawn more threads while we're
"iterations=%d\n", pass, iterations);
while (1)
{
- ptid_t event_ptid;
- struct target_waitstatus ws;
int need_wait = 0;
update_thread_list ();
fprintf_unfiltered (gdb_stdlog,
"infrun: %s executing, "
"need stop\n",
- target_pid_to_str (t->ptid));
+ target_pid_to_str (t->ptid).c_str ());
+ switch_to_thread_no_regs (t);
target_stop (t->ptid);
t->stop_requested = 1;
}
fprintf_unfiltered (gdb_stdlog,
"infrun: %s executing, "
"already stopping\n",
- target_pid_to_str (t->ptid));
+ target_pid_to_str (t->ptid).c_str ());
}
if (t->stop_requested)
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: %s not executing\n",
- target_pid_to_str (t->ptid));
+ target_pid_to_str (t->ptid).c_str ());
/* The thread may be not executing, but still be
resumed with a pending status to process. */
if (pass > 0)
pass = -1;
- event_ptid = wait_one (&ws);
+ wait_one_event event = wait_one ();
- if (ws.kind == TARGET_WAITKIND_NO_RESUMED)
+ if (debug_infrun)
{
- /* All resumed threads exited. */
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: stop_all_threads %s %s\n",
+ target_waitstatus_to_string (&event.ws).c_str (),
+ target_pid_to_str (event.ptid).c_str ());
}
- else if (ws.kind == TARGET_WAITKIND_THREAD_EXITED
- || ws.kind == TARGET_WAITKIND_EXITED
- || ws.kind == TARGET_WAITKIND_SIGNALLED)
- {
- if (debug_infrun)
- {
- ptid_t ptid = ptid_t (ws.value.integer);
- fprintf_unfiltered (gdb_stdlog,
- "infrun: %s exited while "
- "stopping threads\n",
- target_pid_to_str (ptid));
- }
+ if (event.ws.kind == TARGET_WAITKIND_NO_RESUMED
+ || event.ws.kind == TARGET_WAITKIND_THREAD_EXITED
+ || event.ws.kind == TARGET_WAITKIND_EXITED
+ || event.ws.kind == TARGET_WAITKIND_SIGNALLED)
+ {
+ /* All resumed threads exited
+ or one thread/process exited/signalled. */
}
else
{
- thread_info *t = find_thread_ptid (event_ptid);
+ thread_info *t = find_thread_ptid (event.target, event.ptid);
if (t == NULL)
- t = add_thread (event_ptid);
+ t = add_thread (event.target, event.ptid);
t->stop_requested = 0;
t->executing = 0;
/* This may be the first time we see the inferior report
a stop. */
- inferior *inf = find_inferior_ptid (event_ptid);
+ inferior *inf = find_inferior_ptid (event.target, event.ptid);
if (inf->needs_setup)
{
switch_to_thread_no_regs (t);
setup_inferior (0);
}
- if (ws.kind == TARGET_WAITKIND_STOPPED
- && ws.value.sig == GDB_SIGNAL_0)
+ if (event.ws.kind == TARGET_WAITKIND_STOPPED
+ && event.ws.value.sig == GDB_SIGNAL_0)
{
/* We caught the event that we intended to catch, so
there's no event pending. */
"infrun: displaced-step of %s "
"canceled: adding back to the "
"step-over queue\n",
- target_pid_to_str (t->ptid));
+ target_pid_to_str (t->ptid).c_str ());
}
t->control.trap_expected = 0;
thread_step_over_chain_enqueue (t);
if (debug_infrun)
{
- std::string statstr = target_waitstatus_to_string (&ws);
+ std::string statstr = target_waitstatus_to_string (&event.ws);
fprintf_unfiltered (gdb_stdlog,
"infrun: target_wait %s, saving "
}
/* Record for later. */
- save_waitstatus (t, &ws);
+ save_waitstatus (t, &event.ws);
- sig = (ws.kind == TARGET_WAITKIND_STOPPED
- ? ws.value.sig : GDB_SIGNAL_0);
+ sig = (event.ws.kind == TARGET_WAITKIND_STOPPED
+ ? event.ws.value.sig : GDB_SIGNAL_0);
if (displaced_step_fixup (t, sig) < 0)
{
"(currently_stepping=%d)\n",
paddress (target_gdbarch (),
t->suspend.stop_pc),
- target_pid_to_str (t->ptid),
+ target_pid_to_str (t->ptid).c_str (),
currently_stepping (t));
}
}
}
}
- do_cleanups (old_chain);
-
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stop_all_threads done\n");
}
the synchronous command show "no unwaited-for " to the user. */
update_thread_list ();
- for (thread_info *thread : all_non_exited_threads ())
+ for (thread_info *thread : all_non_exited_threads (ecs->target))
{
if (thread->executing
|| thread->suspend.waitstatus_pending_p)
process exited meanwhile (thus updating the thread list results
in an empty thread list). In this case we know we'll be getting
a process exit event shortly. */
- for (inferior *inf : all_inferiors ())
+ for (inferior *inf : all_non_exited_inferiors (ecs->target))
{
- if (inf->pid == 0)
- continue;
-
thread_info *thread = any_live_thread_of_inferior (inf);
if (thread == NULL)
{
once). */
static void
-handle_inferior_event_1 (struct execution_control_state *ecs)
+handle_inferior_event (struct execution_control_state *ecs)
{
+ /* Make sure that all temporary struct value objects that were
+ created during the handling of the event get deleted at the
+ end. */
+ scoped_value_mark free_values;
+
enum stop_kind stop_soon;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: handle_inferior_event %s\n",
+ target_waitstatus_to_string (&ecs->ws).c_str ());
+
if (ecs->ws.kind == TARGET_WAITKIND_IGNORE)
{
/* We had an event in the inferior, but we are not interested in
not stopped, and we are ignoring the event. Another possible
circumstance is any event which the lower level knows will be
reported multiple times without an intervening resume. */
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_IGNORE\n");
prepare_to_wait (ecs);
return;
}
if (ecs->ws.kind == TARGET_WAITKIND_THREAD_EXITED)
{
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_THREAD_EXITED\n");
prepare_to_wait (ecs);
return;
}
&& handle_no_resumed (ecs))
return;
- /* Cache the last pid/waitstatus. */
- set_last_target_status (ecs->ptid, ecs->ws);
+ /* Cache the last target/ptid/waitstatus. */
+ set_last_target_status (ecs->target, ecs->ptid, ecs->ws);
/* Always clear state belonging to the previous time we stopped. */
stop_stack_dummy = STOP_NONE;
{
/* No unwaited-for children left. IOW, all resumed children
have exited. */
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_NO_RESUMED\n");
-
stop_print_frame = 0;
stop_waiting (ecs);
return;
if (ecs->ws.kind != TARGET_WAITKIND_EXITED
&& ecs->ws.kind != TARGET_WAITKIND_SIGNALLED)
{
- ecs->event_thread = find_thread_ptid (ecs->ptid);
+ ecs->event_thread = find_thread_ptid (ecs->target, ecs->ptid);
/* If it's a new thread, add it to the thread database. */
if (ecs->event_thread == NULL)
- ecs->event_thread = add_thread (ecs->ptid);
+ ecs->event_thread = add_thread (ecs->target, ecs->ptid);
/* Disable range stepping. If the next step request could use a
range, this will be end up re-enabled then. */
else
mark_ptid = ecs->ptid;
- set_executing (mark_ptid, 0);
+ set_executing (ecs->target, mark_ptid, 0);
/* Likewise the resumed flag. */
- set_resumed (mark_ptid, 0);
+ set_resumed (ecs->target, mark_ptid, 0);
}
switch (ecs->ws.kind)
{
case TARGET_WAITKIND_LOADED:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_LOADED\n");
context_switch (ecs);
/* Ignore gracefully during startup of the inferior, as it might
be the shell which has just loaded some objects, otherwise
_("unhandled stop_soon: %d"), (int) stop_soon);
case TARGET_WAITKIND_SPURIOUS:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SPURIOUS\n");
if (handle_stop_requested (ecs))
return;
context_switch (ecs);
return;
case TARGET_WAITKIND_THREAD_CREATED:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_THREAD_CREATED\n");
if (handle_stop_requested (ecs))
return;
context_switch (ecs);
case TARGET_WAITKIND_EXITED:
case TARGET_WAITKIND_SIGNALLED:
- if (debug_infrun)
- {
- if (ecs->ws.kind == TARGET_WAITKIND_EXITED)
- fprintf_unfiltered (gdb_stdlog,
- "infrun: TARGET_WAITKIND_EXITED\n");
- else
- fprintf_unfiltered (gdb_stdlog,
- "infrun: TARGET_WAITKIND_SIGNALLED\n");
- }
-
inferior_ptid = ecs->ptid;
- set_current_inferior (find_inferior_ptid (ecs->ptid));
+ set_current_inferior (find_inferior_ptid (ecs->target, ecs->ptid));
set_current_program_space (current_inferior ()->pspace);
handle_vfork_child_exec_or_exit (0);
target_terminal::ours (); /* Must do this before mourn anyway. */
the above cases end in a continue or goto. */
case TARGET_WAITKIND_FORKED:
case TARGET_WAITKIND_VFORKED:
- if (debug_infrun)
- {
- if (ecs->ws.kind == TARGET_WAITKIND_FORKED)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_FORKED\n");
- else
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_VFORKED\n");
- }
-
/* Check whether the inferior is displaced stepping. */
{
struct regcache *regcache = get_thread_regcache (ecs->event_thread);
if (displaced_step_in_progress_thread (ecs->event_thread))
{
struct inferior *parent_inf
- = find_inferior_ptid (ecs->ptid);
+ = find_inferior_ptid (ecs->target, ecs->ptid);
struct regcache *child_regcache;
CORE_ADDR parent_pc;
list yet at this point. */
child_regcache
- = get_thread_arch_aspace_regcache (ecs->ws.value.related_pid,
+ = get_thread_arch_aspace_regcache (parent_inf->process_target (),
+ ecs->ws.value.related_pid,
gdbarch,
parent_inf->aspace);
/* Read PC value of parent process. */
ecs->event_thread->suspend.stop_signal = GDB_SIGNAL_0;
+ process_stratum_target *targ
+ = ecs->event_thread->inf->process_target ();
+
should_resume = follow_fork ();
+ /* Note that one of these may be an invalid pointer,
+ depending on detach_fork. */
thread_info *parent = ecs->event_thread;
- thread_info *child = find_thread_ptid (ecs->ws.value.related_pid);
+ thread_info *child
+ = find_thread_ptid (targ, ecs->ws.value.related_pid);
/* At this point, the parent is marked running, and the
child is marked stopped. */
/* Done with the shared memory region. Re-insert breakpoints in
the parent, and keep going. */
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog,
- "infrun: TARGET_WAITKIND_VFORK_DONE\n");
-
context_switch (ecs);
current_inferior ()->waiting_for_vfork_done = 0;
return;
case TARGET_WAITKIND_EXECD:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_EXECD\n");
/* Note we can't read registers yet (the stop_pc), because we
don't yet know the inferior's post-exec architecture.
/* Be careful not to try to gather much state about a thread
that's in a syscall. It's frequently a losing proposition. */
case TARGET_WAITKIND_SYSCALL_ENTRY:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog,
- "infrun: TARGET_WAITKIND_SYSCALL_ENTRY\n");
/* Getting the current syscall number. */
if (handle_syscall_event (ecs) == 0)
process_event_stop_test (ecs);
syscall. Stepping one instruction seems to get it back
into user code.) */
case TARGET_WAITKIND_SYSCALL_RETURN:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog,
- "infrun: TARGET_WAITKIND_SYSCALL_RETURN\n");
if (handle_syscall_event (ecs) == 0)
process_event_stop_test (ecs);
return;
case TARGET_WAITKIND_STOPPED:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_STOPPED\n");
handle_signal_stop (ecs);
return;
case TARGET_WAITKIND_NO_HISTORY:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_NO_HISTORY\n");
/* Reverse execution: target ran out of history info. */
/* Switch to the stopped thread. */
}
}
-/* A wrapper around handle_inferior_event_1, which also makes sure
- that all temporary struct value objects that were created during
- the handling of the event get deleted at the end. */
-
-static void
-handle_inferior_event (struct execution_control_state *ecs)
-{
- struct value *mark = value_mark ();
-
- handle_inferior_event_1 (ecs);
- /* Purge all temporary values created during the event handling,
- as it could be a long time before we return to the command level
- where such values would otherwise be purged. */
- value_free_to_mark (mark);
-}
-
/* Restart threads back to what they were trying to do back when we
paused them for an in-line step-over. The EVENT_THREAD thread is
ignored. */
for (thread_info *tp : all_non_exited_threads ())
{
+ switch_to_thread_no_regs (tp);
+
if (tp == event_thread)
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: "
"[%s] is event thread\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
continue;
}
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: "
"[%s] not meant to be running\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
continue;
}
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: [%s] resumed\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
gdb_assert (tp->executing || tp->suspend.waitstatus_pending_p);
continue;
}
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: "
"[%s] needs step-over\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
gdb_assert (!tp->resumed);
continue;
}
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: "
"[%s] has pending status\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
tp->resumed = 1;
continue;
}
internal_error (__FILE__, __LINE__,
"thread [%s] needs a step-over, but not in "
"step-over queue\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
}
if (currently_stepping (tp))
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: [%s] was stepping\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
keep_going_stepped_thread (tp);
}
else
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: restart threads: [%s] continuing\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
reset_ecs (ecs, tp);
switch_to_thread (tp);
keep_going_pass_signal (ecs);
"(currently_stepping=%d)\n",
paddress (target_gdbarch (),
tp->suspend.stop_pc),
- target_pid_to_str (tp->ptid),
+ target_pid_to_str (tp->ptid).c_str (),
currently_stepping (tp));
}
{
struct regcache *regcache = get_thread_regcache (ecs->event_thread);
struct gdbarch *reg_gdbarch = regcache->arch ();
- scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
- inferior_ptid = ecs->ptid;
+ switch_to_thread (ecs->event_thread);
fprintf_unfiltered (gdb_stdlog, "infrun: stop_pc = %s\n",
paddress (reg_gdbarch,
fprintf_unfiltered (gdb_stdlog,
"infrun: [%s] hit another thread's "
"single-step breakpoint\n",
- target_pid_to_str (ecs->ptid));
+ target_pid_to_str (ecs->ptid).c_str ());
}
ecs->hit_singlestep_breakpoint = 1;
}
fprintf_unfiltered (gdb_stdlog,
"infrun: [%s] hit its "
"single-step breakpoint\n",
- target_pid_to_str (ecs->ptid));
+ target_pid_to_str (ecs->ptid).c_str ());
}
}
}
if (random_signal)
{
/* Signal not for debugging purposes. */
- struct inferior *inf = find_inferior_ptid (ecs->ptid);
+ struct inferior *inf = find_inferior_ptid (ecs->target, ecs->ptid);
enum gdb_signal stop_signal = ecs->event_thread->suspend.stop_signal;
if (debug_infrun)
return;
}
- /* Note: step_resume_breakpoint may be non-NULL. This occures
+ /* Note: step_resume_breakpoint may be non-NULL. This occurs
when either there's a nested signal, or when there's a
pending signal enabled just as the signal handler returns
(leaving the inferior at the step-resume-breakpoint without
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)
+ && !inline_frame_is_marked_for_skip (true, ecs->event_thread))
{
if (execution_direction == EXEC_REVERSE)
handle_step_into_function_backward (gdbarch, ecs);
if (call_sal.line == ecs->event_thread->current_line
&& call_sal.symtab == ecs->event_thread->current_symtab)
- step_into_inline_frame (ecs->event_thread);
+ {
+ step_into_inline_frame (ecs->event_thread);
+ if (inline_frame_is_marked_for_skip (false, ecs->event_thread))
+ {
+ keep_going (ecs);
+ return;
+ }
+ }
end_stepping_range (ecs);
return;
fprintf_unfiltered (gdb_stdlog,
"infrun: stepping through inlined function\n");
- if (ecs->event_thread->control.step_over_calls == STEP_OVER_ALL)
+ if (ecs->event_thread->control.step_over_calls == STEP_OVER_ALL
+ || inline_frame_is_marked_for_skip (false, ecs->event_thread))
keep_going (ecs);
else
end_stepping_range (ecs);
{
fprintf_unfiltered (gdb_stdlog,
"infrun: need to finish step-over of [%s]\n",
- target_pid_to_str (ecs->event_thread->ptid));
+ target_pid_to_str (ecs->event_thread->ptid).c_str ());
}
keep_going (ecs);
return 1;
fprintf_unfiltered (gdb_stdlog,
"infrun: need to step [%s] over single-step "
"breakpoint\n",
- target_pid_to_str (ecs->ptid));
+ target_pid_to_str (ecs->ptid).c_str ());
}
keep_going (ecs);
return 1;
{
fprintf_unfiltered (gdb_stdlog,
"infrun: thread [%s] still needs step-over\n",
- target_pid_to_str (ecs->event_thread->ptid));
+ target_pid_to_str (ecs->event_thread->ptid).c_str ());
}
keep_going (ecs);
return 1;
for (thread_info *tp : all_non_exited_threads ())
{
+ switch_to_thread_no_regs (tp);
+
/* Ignore threads of processes the caller is not
resuming. */
if (!sched_multi
- && tp->ptid.pid () != ecs->ptid.pid ())
+ && (tp->inf->process_target () != ecs->target
+ || tp->inf->pid != ecs->ptid.pid ()))
continue;
/* When stepping over a breakpoint, we lock all threads
internal_error (__FILE__, __LINE__,
"[%s] has inconsistent state: "
"trap_expected=%d\n",
- target_pid_to_str (tp->ptid),
+ target_pid_to_str (tp->ptid).c_str (),
tp->control.trap_expected);
}
return 1;
}
}
+
+ switch_to_thread (ecs->event_thread);
}
return 0;
struct frame_info *frame,
struct symbol *sym)
{
- TRY
+ try
{
struct block_symbol vsym;
struct value *value;
CORE_ADDR handler;
struct breakpoint *bp;
- vsym = lookup_symbol_search_name (SYMBOL_SEARCH_NAME (sym),
+ vsym = lookup_symbol_search_name (sym->search_name (),
b, VAR_DOMAIN);
value = read_var_value (vsym.symbol, vsym.block, frame);
/* If the value was optimized out, revert to the old behavior. */
inferior_thread ()->control.exception_resume_breakpoint = bp;
}
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
/* We want to ignore errors here. */
}
- END_CATCH
}
/* A helper for check_exception_resume that sets an
if (!func)
return;
- TRY
+ try
{
const struct block *b;
struct block_iterator iter;
}
}
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
}
- END_CATCH
}
static void
fprintf_unfiltered (gdb_stdlog,
"infrun: %s has trap_expected set, "
"resuming to collect trap\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
/* We haven't yet gotten our trap, and either: intercepted a
non-signal event (e.g., a fork); or took a signal which we
fprintf_unfiltered (gdb_stdlog,
"infrun: step-over already in progress: "
"step-over for %s deferred\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
thread_step_over_chain_enqueue (tp);
}
else
fprintf_unfiltered (gdb_stdlog,
"infrun: step-over in progress: "
"resume of %s deferred\n",
- target_pid_to_str (tp->ptid));
+ target_pid_to_str (tp->ptid).c_str ());
}
}
else
stop_all_threads ();
/* Stop stepping if inserting breakpoints fails. */
- TRY
+ try
{
insert_breakpoints ();
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
exception_print (gdb_stderr, e);
stop_waiting (ecs);
clear_step_over_info ();
return;
}
- END_CATCH
ecs->event_thread->control.trap_expected = (remove_bp || remove_wps);
print_exited_reason (struct ui_out *uiout, int exitstatus)
{
struct inferior *inf = current_inferior ();
- const char *pidstr = target_pid_to_str (ptid_t (inf->pid));
+ std::string pidstr = target_pid_to_str (ptid_t (inf->pid));
annotate_exited (exitstatus);
if (exitstatus)
{
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");
+ std::string exit_code_str
+ = string_printf ("0%o", (unsigned int) exitstatus);
+ uiout->message ("[Inferior %s (%s) exited with code %pF]\n",
+ plongest (inf->num), pidstr.c_str (),
+ string_field ("exit-code", exit_code_str.c_str ()));
}
else
{
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");
+ uiout->message ("[Inferior %s (%s) exited normally]\n",
+ plongest (inf->num), pidstr.c_str ());
}
}
const char *name;
uiout->text ("\nThread ");
- uiout->field_fmt ("thread-id", "%s", print_thread_id (thr));
+ uiout->field_string ("thread-id", 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->field_string ("name", name);
uiout->text ("\"");
}
}
/* See infrun.h. */
void
-print_stop_event (struct ui_out *uiout)
+print_stop_event (struct ui_out *uiout, bool displays)
{
struct target_waitstatus last;
- ptid_t last_ptid;
struct thread_info *tp;
- get_last_target_status (&last_ptid, &last);
+ get_last_target_status (nullptr, nullptr, &last);
{
scoped_restore save_uiout = make_scoped_restore (¤t_uiout, uiout);
print_stop_location (&last);
/* Display the auto-display expressions. */
- do_displays ();
+ if (displays)
+ do_displays ();
}
tp = inferior_thread ();
if (tp->thread_fsm != NULL
- && thread_fsm_finished_p (tp->thread_fsm))
+ && tp->thread_fsm->finished_p ())
{
struct return_value_info *rv;
- rv = thread_fsm_return_value (tp->thread_fsm);
+ rv = tp->thread_fsm->return_value ();
if (rv != NULL)
print_return_value (uiout, rv);
}
normal_stop (void)
{
struct target_waitstatus last;
- ptid_t last_ptid;
- get_last_target_status (&last_ptid, &last);
+ get_last_target_status (nullptr, nullptr, &last);
new_stop_id ();
frontend/user running state. A QUIT is an easy exception to see
here, so do this before any filtered output. */
- gdb::optional<scoped_finish_thread_state> maybe_finish_thread_state;
+ ptid_t finish_ptid = null_ptid;
if (!non_stop)
- maybe_finish_thread_state.emplace (minus_one_ptid);
+ finish_ptid = minus_one_ptid;
else if (last.kind == TARGET_WAITKIND_SIGNALLED
|| last.kind == TARGET_WAITKIND_EXITED)
{
linux-fork.c automatically switches to another fork from
within target_mourn_inferior. */
if (inferior_ptid != null_ptid)
- maybe_finish_thread_state.emplace (ptid_t (inferior_ptid.pid ()));
+ finish_ptid = ptid_t (inferior_ptid.pid ());
}
else if (last.kind != TARGET_WAITKIND_NO_RESUMED)
- maybe_finish_thread_state.emplace (inferior_ptid);
+ finish_ptid = inferior_ptid;
+
+ gdb::optional<scoped_finish_thread_state> maybe_finish_thread_state;
+ if (finish_ptid != null_ptid)
+ {
+ maybe_finish_thread_state.emplace
+ (user_visible_resume_target (finish_ptid), finish_ptid);
+ }
/* As we're presenting a stop, and potentially removing breakpoints,
update the thread list so we can tell whether there are threads
{
target_terminal::ours_for_output ();
printf_filtered (_("[Switching to %s]\n"),
- target_pid_to_str (inferior_ptid));
+ target_pid_to_str (inferior_ptid).c_str ());
annotate_thread_changed ();
}
previous_inferior_ptid = inferior_ptid;
{
stop_context saved_context;
- TRY
+ try
{
execute_cmd_pre_hook (stop_command);
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
exception_fprintf (gdb_stderr, ex,
"Error while running hook_stop:\n");
}
- END_CATCH
/* If the stop hook resumes the target, then there's no point in
trying to notify about the previous stop; its context is
if (target_has_execution)
{
if (last.kind != TARGET_WAITKIND_SIGNALLED
- && last.kind != TARGET_WAITKIND_EXITED)
+ && last.kind != TARGET_WAITKIND_EXITED
+ && last.kind != TARGET_WAITKIND_NO_RESUMED)
/* Delete the breakpoint we stopped at, if it wants to be deleted.
Delete any breakpoint that is to be deleted at the next stop. */
breakpoint_auto_delete (inferior_thread ()->control.stop_bpstat);
for (i = 0; i < GDB_SIGNAL_LAST; ++i)
signal_catch[i] = info[i] > 0;
signal_cache_update (-1);
- target_pass_signals ((int) GDB_SIGNAL_LAST, signal_pass);
+ target_pass_signals (signal_pass);
}
static void
int sigfirst, siglast;
enum gdb_signal oursig;
int allsigs;
- int nsigs;
- unsigned char *sigs;
if (args == NULL)
{
/* Allocate and zero an array of flags for which signals to handle. */
- nsigs = (int) GDB_SIGNAL_LAST;
- sigs = (unsigned char *) alloca (nsigs);
- memset (sigs, 0, nsigs);
+ const size_t nsigs = GDB_SIGNAL_LAST;
+ unsigned char sigs[nsigs] {};
/* Break the command line up into args. */
sigs[signum] = 1;
}
else
- {
- printf_unfiltered (_("Not confirmed, unchanged.\n"));
- gdb_flush (gdb_stdout);
- }
+ printf_unfiltered (_("Not confirmed, unchanged.\n"));
}
break;
case GDB_SIGNAL_0:
if (sigs[signum])
{
signal_cache_update (-1);
- target_pass_signals ((int) GDB_SIGNAL_LAST, signal_pass);
- target_program_signals ((int) GDB_SIGNAL_LAST, signal_program);
+ target_pass_signals (signal_pass);
+ target_program_signals (signal_program);
if (from_tty)
{
/* The point of the try/catch is that if the stack is clobbered,
walking the stack might encounter a garbage pointer and
error() trying to dereference it. */
- TRY
+ try
{
restore_selected_frame (inf_status->selected_frame_id);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
exception_fprintf (gdb_stderr, ex,
"Unable to restore previously selected frame:\n");
innermost frame. */
select_frame (get_current_frame ());
}
- END_CATCH
}
delete inf_status;
void
_initialize_infrun (void)
{
- int i;
- int numsigs;
struct cmd_list_element *c;
/* Register extra event sources in the event loop. */
&setlist,
&showlist);
- numsigs = (int) GDB_SIGNAL_LAST;
- signal_stop = XNEWVEC (unsigned char, numsigs);
- signal_print = XNEWVEC (unsigned char, numsigs);
- signal_program = XNEWVEC (unsigned char, numsigs);
- signal_catch = XNEWVEC (unsigned char, numsigs);
- signal_pass = XNEWVEC (unsigned char, numsigs);
- for (i = 0; i < numsigs; i++)
+ for (size_t i = 0; i < GDB_SIGNAL_LAST; i++)
{
signal_stop[i] = 1;
signal_print[i] = 1;
projects / deliverable / binutils-gdb.git / blobdiff