static struct target_ops linux_ops_saved;
/* The method to call, if any, when a new thread is attached. */
-static void (*linux_nat_new_thread) (ptid_t);
+static void (*linux_nat_new_thread) (struct lwp_info *);
+
+/* Hook to call prior to resuming a thread. */
+static void (*linux_nat_prepare_to_resume) (struct lwp_info *);
/* The method to call, if any, when the siginfo object needs to be
converted between the layout returned by ptrace, and the layout in
return buf;
}
+/* Destroy and free LP. */
+
+static void
+lwp_free (struct lwp_info *lp)
+{
+ xfree (lp->arch_private);
+ xfree (lp);
+}
+
/* Remove all LWPs belong to PID from the lwp list. */
static void
else
lpprev->next = lp->next;
- xfree (lp);
+ lwp_free (lp);
}
else
lpprev = lp;
lp->next = lwp_list;
lwp_list = lp;
- if (num_lwps (GET_PID (ptid)) > 1 && linux_nat_new_thread != NULL)
- linux_nat_new_thread (ptid);
+ if (linux_nat_new_thread != NULL)
+ linux_nat_new_thread (lp);
return lp;
}
else
lwp_list = lp->next;
- xfree (lp);
+ lwp_free (lp);
}
/* Return a pointer to the structure describing the LWP corresponding
/* Pass on any pending signal for this LWP. */
get_pending_status (lp, &status);
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
errno = 0;
if (ptrace (PTRACE_DETACH, GET_LWP (lp->ptid), 0,
WSTOPSIG (status)) < 0)
target_pid_to_str (main_lwp->ptid));
}
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (main_lwp);
delete_lwp (main_lwp->ptid);
if (forks_exist_p ())
"RC: PTRACE_CONT %s, 0, 0 (resuming sibling)\n",
target_pid_to_str (lp->ptid));
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops,
pid_to_ptid (GET_LWP (lp->ptid)),
step, TARGET_SIGNAL_0);
/* Convert to something the lower layer understands. */
ptid = pid_to_ptid (GET_LWP (lp->ptid));
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, ptid, step, signo);
memset (&lp->siginfo, 0, sizeof (lp->siginfo));
lp->stopped_by_watchpoint = 0;
/* Note that gdbarch_get_syscall_number may access registers, hence
fill a regcache. */
registers_changed ();
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
lp->step, TARGET_SIGNAL_0);
return 1;
fprintf_unfiltered (gdb_stdlog,
"LHEW: resuming new LWP %ld\n",
GET_LWP (new_lp->ptid));
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (new_lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (new_pid),
0, TARGET_SIGNAL_0);
new_lp->stopped = 0;
if (debug_linux_nat)
fprintf_unfiltered (gdb_stdlog,
"LHEW: resuming parent LWP %d\n", pid);
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
0, TARGET_SIGNAL_0);
return 0;
}
+/* Request a stop on LWP. */
+
+void
+linux_stop_lwp (struct lwp_info *lwp)
+{
+ stop_callback (lwp, NULL);
+}
+
/* Return non-zero if LWP PID has a pending SIGINT. */
static int
registers_changed ();
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
lp->step, TARGET_SIGNAL_0);
if (debug_linux_nat)
lp->ignore_sigint = 0;
registers_changed ();
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
lp->step, TARGET_SIGNAL_0);
if (debug_linux_nat)
/* Resume the thread. It should halt immediately returning the
pending SIGSTOP. */
registers_changed ();
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
lp->step, TARGET_SIGNAL_0);
if (debug_linux_nat)
newly attached threads may cause an unwanted delay in
getting them running. */
registers_changed ();
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
lp->step, signo);
if (debug_linux_nat)
&& lp->status == 0
&& lp->waitstatus.kind == TARGET_WAITKIND_IGNORE)
{
+ struct regcache *regcache = get_thread_regcache (lp->ptid);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ CORE_ADDR pc = regcache_read_pc (regcache);
+
gdb_assert (is_executing (lp->ptid));
/* Don't bother if there's a breakpoint at PC that we'd hit
immediately, and we're not waiting for this LWP. */
if (!ptid_match (lp->ptid, *wait_ptid_p))
{
- struct regcache *regcache = get_thread_regcache (lp->ptid);
- CORE_ADDR pc = regcache_read_pc (regcache);
-
if (breakpoint_inserted_here_p (get_regcache_aspace (regcache), pc))
return 0;
}
if (debug_linux_nat)
fprintf_unfiltered (gdb_stdlog,
- "RSRL: resuming stopped-resumed LWP %s\n",
- target_pid_to_str (lp->ptid));
+ "RSRL: resuming stopped-resumed LWP %s at %s: step=%d\n",
+ target_pid_to_str (lp->ptid),
+ paddress (gdbarch, pc),
+ lp->step);
+ registers_changed ();
+ if (linux_nat_prepare_to_resume != NULL)
+ linux_nat_prepare_to_resume (lp);
linux_ops->to_resume (linux_ops, pid_to_ptid (GET_LWP (lp->ptid)),
lp->step, TARGET_SIGNAL_0);
lp->stopped = 0;
may be more. If we requested a specific lwp or process, also
assume there may be more. */
if (target_can_async_p ()
- && (ourstatus->kind != TARGET_WAITKIND_IGNORE
+ && ((ourstatus->kind != TARGET_WAITKIND_IGNORE
+ && ourstatus->kind != TARGET_WAITKIND_NO_RESUMED)
|| !ptid_equal (ptid, minus_one_ptid)))
async_file_mark ();
/* Register a method to call whenever a new thread is attached. */
void
-linux_nat_set_new_thread (struct target_ops *t, void (*new_thread) (ptid_t))
+linux_nat_set_new_thread (struct target_ops *t,
+ void (*new_thread) (struct lwp_info *))
{
/* Save the pointer. We only support a single registered instance
of the GNU/Linux native target, so we do not need to map this to
linux_nat_siginfo_fixup = siginfo_fixup;
}
+/* Register a method to call prior to resuming a thread. */
+
+void
+linux_nat_set_prepare_to_resume (struct target_ops *t,
+ void (*prepare_to_resume) (struct lwp_info *))
+{
+ /* Save the pointer. */
+ linux_nat_prepare_to_resume = prepare_to_resume;
+}
+
/* Return the saved siginfo associated with PTID. */
struct siginfo *
linux_nat_get_siginfo (ptid_t ptid)
&info_proc_cmdlist);
add_cmd ("stat", class_info, linux_nat_info_proc_cmd_stat, _("\
-List a bunch of random process info."),
+List process info from /proc/PID/stat."),
&info_proc_cmdlist);
add_cmd ("status", class_info, linux_nat_info_proc_cmd_status, _("\
-List a different bunch of random process info."),
+List process info from /proc/PID/status."),
&info_proc_cmdlist);
add_cmd ("cwd", class_info, linux_nat_info_proc_cmd_cwd, _("\
-List a different bunch of random process info."),
+List current working directory of the process."),
&info_proc_cmdlist);
add_cmd ("cmdline", class_info, linux_nat_info_proc_cmd_cmdline, _("\
-List a different bunch of random process info."),
+List command line arguments of the process."),
&info_proc_cmdlist);
add_cmd ("exe", class_info, linux_nat_info_proc_cmd_exe, _("\
-List a different bunch of random process info."),
+List absolute filename for executable of the process."),
&info_proc_cmdlist);
add_cmd ("all", class_info, linux_nat_info_proc_cmd_all, _("\
projects / binutils.git / blobdiff