#include "cli/cli-setshow.h"
#include "target-descriptions.h"
#include "gdb_bfd.h"
-#include "filestuff.h"
-#include "rsp-low.h"
+#include "gdbsupport/filestuff.h"
+#include "gdbsupport/rsp-low.h"
#include "disasm.h"
#include "location.h"
-#include "gdb_sys_time.h"
+#include "gdbsupport/gdb_sys_time.h"
#include "event-loop.h"
#include "event-top.h"
#include "tracepoint.h"
#include "ax.h"
#include "ax-gdb.h"
-#include "agent.h"
+#include "gdbsupport/agent.h"
#include "btrace.h"
#include "record-btrace.h"
#include <algorithm>
-#include "common/scoped_restore.h"
-#include "environ.h"
-#include "common/byte-vector.h"
+#include "gdbsupport/scoped_restore.h"
+#include "gdbsupport/environ.h"
+#include "gdbsupport/byte-vector.h"
#include <unordered_map>
/* The remote target. */
struct packet_reg;
struct stop_reply;
-static void stop_reply_xfree (struct stop_reply *);
-
-struct stop_reply_deleter
-{
- void operator() (stop_reply *r) const
- {
- stop_reply_xfree (r);
- }
-};
-
-typedef std::unique_ptr<stop_reply, stop_reply_deleter> stop_reply_up;
+typedef std::unique_ptr<stop_reply> stop_reply_up;
/* Generic configuration support for packets the stub optionally
supports. Allows the user to specify the use of the packet as well
void update_thread_list () override;
- const char *pid_to_str (ptid_t) override;
+ std::string pid_to_str (ptid_t) override;
const char *extra_thread_info (struct thread_info *) override;
int handle_len,
inferior *inf) override;
+ gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp)
+ override;
+
void stop (ptid_t) override;
void interrupt () override;
const struct btrace_config *btrace_conf (const struct btrace_target_info *) override;
bool augmented_libraries_svr4_read () override;
int follow_fork (int, int) override;
- void follow_exec (struct inferior *, char *) override;
+ void follow_exec (struct inferior *, const char *) override;
int insert_fork_catchpoint (int) override;
int remove_fork_catchpoint (int) override;
int insert_vfork_catchpoint (int) override;
char *remote_get_noisy_reply ();
int remote_query_attached (int pid);
- inferior *remote_add_inferior (int fake_pid_p, int pid, int attached,
+ inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached,
int try_open_exec);
ptid_t remote_current_thread (ptid_t oldpid);
};
/* Per-program-space data key. */
-static const struct program_space_data *remote_pspace_data;
+static const struct program_space_key<char, gdb::xfree_deleter<char>>
+ remote_pspace_data;
/* The variable registered as the control variable used by the
remote exec-file commands. While the remote exec-file setting is
org_to = to;
- TRY
+ try
{
gdbarch_relocate_instruction (target_gdbarch (), &to, from);
relocated = 1;
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
if (ex.error == MEMORY_ERROR)
{
}
putpkt ("E01");
}
- END_CATCH
if (relocated)
{
return &m_remote_state;
}
-/* Cleanup routine for the remote module's pspace data. */
-
-static void
-remote_pspace_data_cleanup (struct program_space *pspace, void *arg)
-{
- char *remote_exec_file = (char *) arg;
-
- xfree (remote_exec_file);
-}
-
/* Fetch the remote exec-file from the current program space. */
static const char *
{
char *remote_exec_file;
- remote_exec_file
- = (char *) program_space_data (current_program_space,
- remote_pspace_data);
+ remote_exec_file = remote_pspace_data.get (current_program_space);
if (remote_exec_file == NULL)
return "";
static void
set_pspace_remote_exec_file (struct program_space *pspace,
- char *remote_exec_file)
+ const char *remote_exec_file)
{
- char *old_file = (char *) program_space_data (pspace, remote_pspace_data);
+ char *old_file = remote_pspace_data.get (pspace);
xfree (old_file);
- set_program_space_data (pspace, remote_pspace_data,
- xstrdup (remote_exec_file));
+ remote_pspace_data.set (pspace, xstrdup (remote_exec_file));
}
/* The "set/show remote exec-file" set command hook. */
\f
-static ptid_t magic_null_ptid;
-static ptid_t not_sent_ptid;
-static ptid_t any_thread_ptid;
+/* Take advantage of the fact that the TID field is not used, to tag
+ special ptids with it set to != 0. */
+static const ptid_t magic_null_ptid (42000, -1, 1);
+static const ptid_t not_sent_ptid (42000, -2, 1);
+static const ptid_t any_thread_ptid (42000, 0, 1);
/* Find out if the stub attached to PID (and hence GDB should offer to
detach instead of killing it when bailing out). */
if no main executable is open already. */
inferior *
-remote_target::remote_add_inferior (int fake_pid_p, int pid, int attached,
+remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached,
int try_open_exec)
{
struct inferior *inf;
if (find_inferior_pid (currthread.pid ()) == NULL)
{
struct remote_state *rs = get_remote_state ();
- int fake_pid_p = !remote_multi_process_p (rs);
+ bool fake_pid_p = !remote_multi_process_p (rs);
inf = remote_add_inferior (fake_pid_p,
currthread.pid (), -1, 1);
if (rs->remote_async_inferior_event_token)
delete_async_event_handler (&rs->remote_async_inferior_event_token);
- remote_notif_state_xfree (rs->notif_state);
+ delete rs->notif_state;
}
/* Query the remote side for the text, data and bss offsets. */
remote_target::add_current_inferior_and_thread (char *wait_status)
{
struct remote_state *rs = get_remote_state ();
- int fake_pid_p = 0;
+ bool fake_pid_p = false;
inferior_ptid = null_ptid;
if (curr_ptid != null_ptid)
{
if (!remote_multi_process_p (rs))
- fake_pid_p = 1;
+ fake_pid_p = true;
}
else
{
double duty as both the pid of the target process (if it has
such), and as a flag indicating that a target is active. */
curr_ptid = magic_null_ptid;
- fake_pid_p = 1;
+ fake_pid_p = true;
}
remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1);
}
/* Switch to using the remote target now. */
- push_target (remote);
- /* The target stack owns the target now. */
- target_holder.release ();
+ push_target (std::move (target_holder));
/* Register extra event sources in the event loop. */
rs->remote_async_inferior_event_token
function. See cli-dump.c. */
{
- TRY
+ try
{
remote->start_remote (from_tty, extended_p);
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
/* Pop the partially set up target - unless something else did
already before throwing the exception. */
if (ex.error != TARGET_CLOSE_ERROR)
remote_unpush_target ();
- throw_exception (ex);
+ throw;
}
- END_CATCH
}
remote_btrace_reset (rs);
follow-exec-mode is "new". */
void
-remote_target::follow_exec (struct inferior *inf, char *execd_pathname)
+remote_target::follow_exec (struct inferior *inf, const char *execd_pathname)
{
/* We know that this is a target file name, so if it has the "target:"
prefix we strip it off before saving it in the program space. */
if (exec_file)
printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file,
- target_pid_to_str (ptid_t (pid)));
+ target_pid_to_str (ptid_t (pid)).c_str ());
else
printf_unfiltered (_("Attaching to %s\n"),
- target_pid_to_str (ptid_t (pid)));
-
- gdb_flush (gdb_stdout);
+ target_pid_to_str (ptid_t (pid)).c_str ());
}
xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid);
}
else if (strcmp (rs->buf.data (), "OK") != 0)
error (_("Attaching to %s failed with: %s"),
- target_pid_to_str (ptid_t (pid)),
+ target_pid_to_str (ptid_t (pid)).c_str (),
rs->buf.data ());
break;
case PACKET_UNKNOWN:
error (_("This target does not support attaching to a process"));
default:
error (_("Attaching to %s failed"),
- target_pid_to_str (ptid_t (pid)));
+ target_pid_to_str (ptid_t (pid)).c_str ());
}
- set_current_inferior (remote_add_inferior (0, pid, 1, 0));
+ set_current_inferior (remote_add_inferior (false, pid, 1, 0));
inferior_ptid = ptid_t (pid);
putpkt (rs->buf);
getpkt (&rs->buf, 0);
if (strcmp (rs->buf.data (), "OK") != 0)
- error (_("Stopping %s failed: %s"), target_pid_to_str (ptid),
+ error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (),
rs->buf.data ());
}
gdb_flush (gdb_stdtarg);
}
-DEF_VEC_O(cached_reg_t);
-
-typedef struct stop_reply
+struct stop_reply : public notif_event
{
- struct notif_event base;
+ ~stop_reply ();
/* The identifier of the thread about this event */
ptid_t ptid;
efficient for those targets that provide critical registers as
part of their normal status mechanism (as another roundtrip to
fetch them is avoided). */
- VEC(cached_reg_t) *regcache;
+ std::vector<cached_reg_t> regcache;
enum target_stop_reason stop_reason;
CORE_ADDR watch_data_address;
int core;
-} *stop_reply_p;
-
-static void
-stop_reply_xfree (struct stop_reply *r)
-{
- notif_event_xfree ((struct notif_event *) r);
-}
+};
/* Return the length of the stop reply queue. */
return 0;
}
-static void
-stop_reply_dtr (struct notif_event *event)
+stop_reply::~stop_reply ()
{
- struct stop_reply *r = (struct stop_reply *) event;
- cached_reg_t *reg;
- int ix;
-
- for (ix = 0;
- VEC_iterate (cached_reg_t, r->regcache, ix, reg);
- ix++)
- xfree (reg->data);
-
- VEC_free (cached_reg_t, r->regcache);
+ for (cached_reg_t ® : regcache)
+ xfree (reg.data);
}
-static struct notif_event *
-remote_notif_stop_alloc_reply (void)
+static notif_event_up
+remote_notif_stop_alloc_reply ()
{
- /* We cast to a pointer to the "base class". */
- struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply);
-
- r->dtr = stop_reply_dtr;
-
- return r;
+ return notif_event_up (new struct stop_reply ());
}
/* A client of notification Stop. */
/* Discard the in-flight notification. */
if (reply != NULL && reply->ptid.pid () == inf->pid)
{
- stop_reply_xfree (reply);
+ delete reply;
rns->pending_event[notif_client_stop.id] = NULL;
}
if (notif_debug)
fprintf_unfiltered (gdb_stdlog,
"notif: discard queued event: 'Stop' in %s\n",
- target_pid_to_str (ptid));
+ target_pid_to_str (ptid).c_str ());
return result;
}
if (notif_debug)
fprintf_unfiltered (gdb_stdlog,
"notif: push 'Stop' %s to queue %d\n",
- target_pid_to_str (new_event->ptid),
+ target_pid_to_str (new_event->ptid).c_str (),
int (rs->stop_reply_queue.size ()));
mark_async_event_handler (rs->remote_async_inferior_event_token);
event->ws.kind = TARGET_WAITKIND_IGNORE;
event->ws.value.integer = 0;
event->stop_reason = TARGET_STOPPED_BY_NO_REASON;
- event->regcache = NULL;
+ event->regcache.clear ();
event->core = -1;
switch (buf[0])
else if (strprefix (p, p1, "exec"))
{
ULONGEST ignored;
- char pathname[PATH_MAX];
int pathlen;
/* Determine the length of the execd pathname. */
/* Save the pathname for event reporting and for
the next run command. */
- hex2bin (p1, (gdb_byte *) pathname, pathlen);
+ gdb::unique_xmalloc_ptr<char[]> pathname
+ ((char *) xmalloc (pathlen + 1));
+ hex2bin (p1, (gdb_byte *) pathname.get (), pathlen);
pathname[pathlen] = '\0';
/* This is freed during event handling. */
- event->ws.value.execd_pathname = xstrdup (pathname);
+ event->ws.value.execd_pathname = pathname.release ();
event->ws.kind = TARGET_WAITKIND_EXECD;
/* Skip the registers included in this packet, since
if (fieldsize < register_size (event->arch, reg->regnum))
warning (_("Remote reply is too short: %s"), buf);
- VEC_safe_push (cached_reg_t, event->regcache, &cached_reg);
+ event->regcache.push_back (cached_reg);
}
else
{
&& status->kind != TARGET_WAITKIND_NO_RESUMED)
{
/* Expedited registers. */
- if (stop_reply->regcache)
+ if (!stop_reply->regcache.empty ())
{
struct regcache *regcache
= get_thread_arch_regcache (ptid, stop_reply->arch);
- cached_reg_t *reg;
- int ix;
- for (ix = 0;
- VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg);
- ix++)
- {
- regcache->raw_supply (reg->num, reg->data);
- xfree (reg->data);
- }
+ for (cached_reg_t ® : stop_reply->regcache)
+ {
+ regcache->raw_supply (reg.num, reg.data);
+ xfree (reg.data);
+ }
- VEC_free (cached_reg_t, stop_reply->regcache);
+ stop_reply->regcache.clear ();
}
remote_notice_new_inferior (ptid, 0);
remote_thr->vcont_resumed = 0;
}
- stop_reply_xfree (stop_reply);
+ delete stop_reply;
return ptid;
}
}
}
+/* Set this to the maximum number of seconds to wait instead of waiting forever
+ in target_wait(). If this timer times out, then it generates an error and
+ the command is aborted. This replaces most of the need for timeouts in the
+ GDB test suite, and makes it possible to distinguish between a hung target
+ and one with slow communications. */
+
+static int watchdog = 0;
+static void
+show_watchdog (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Watchdog timer is %s.\n"), value);
+}
+
/* Read a packet from the remote machine, with error checking, and
store it in *BUF. Resize *BUF if necessary to hold the result. If
FOREVER, wait forever rather than timing out; this is used (in
{
/* Catch errors so the user can quit from gdb even when we
aren't on speaking terms with the remote system. */
- TRY
+ try
{
putpkt ("k");
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
if (ex.error == TARGET_CLOSE_ERROR)
{
/* Otherwise, something went wrong. We didn't actually kill
the target. Just propagate the exception, and let the
user or higher layers decide what to do. */
- throw_exception (ex);
+ throw;
}
- END_CATCH
}
void
}
-int remote_hw_watchpoint_limit = -1;
-int remote_hw_watchpoint_length_limit = -1;
-int remote_hw_breakpoint_limit = -1;
+static int remote_hw_watchpoint_limit = -1;
+static int remote_hw_watchpoint_length_limit = -1;
+static int remote_hw_breakpoint_limit = -1;
int
remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
#endif /* 0 */
-/* Convert a thread ID to a string. Returns the string in a static
- buffer. */
+/* Convert a thread ID to a string. */
-const char *
+std::string
remote_target::pid_to_str (ptid_t ptid)
{
- static char buf[64];
struct remote_state *rs = get_remote_state ();
if (ptid == null_ptid)
attached to a process, and reporting yes to qAttached, hence
no smart special casing here. */
if (!remote_multi_process_p (rs))
- {
- xsnprintf (buf, sizeof buf, "Remote target");
- return buf;
- }
+ return "Remote target";
return normal_pid_to_str (ptid);
}
else
{
if (magic_null_ptid == ptid)
- xsnprintf (buf, sizeof buf, "Thread <main>");
+ return "Thread <main>";
else if (remote_multi_process_p (rs))
if (ptid.lwp () == 0)
return normal_pid_to_str (ptid);
else
- xsnprintf (buf, sizeof buf, "Thread %d.%ld",
- ptid.pid (), ptid.lwp ());
+ return string_printf ("Thread %d.%ld",
+ ptid.pid (), ptid.lwp ());
else
- xsnprintf (buf, sizeof buf, "Thread %ld",
- ptid.lwp ());
- return buf;
+ return string_printf ("Thread %ld", ptid.lwp ());
}
}
DISABLE_COPY_AND_ASSIGN (scoped_remote_fd);
/* Release ownership of the file descriptor, and return it. */
- int release () noexcept
+ ATTRIBUTE_UNUSED_RESULT int release () noexcept
{
int fd = m_fd;
m_fd = -1;
putpkt ("qTStatus");
- TRY
+ try
{
p = remote_get_noisy_reply ();
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
if (ex.error != TARGET_CLOSE_ERROR)
{
exception_fprintf (gdb_stderr, ex, "qTStatus: ");
return -1;
}
- throw_exception (ex);
+ throw;
}
- END_CATCH
result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]);
{
if (rs->buf[0] == 'E' && rs->buf[1] == '.')
error (_("Could not enable branch tracing for %s: %s"),
- target_pid_to_str (ptid), &rs->buf[2]);
+ target_pid_to_str (ptid).c_str (), &rs->buf[2]);
else
error (_("Could not enable branch tracing for %s."),
- target_pid_to_str (ptid));
+ target_pid_to_str (ptid).c_str ());
}
tinfo = XCNEW (struct btrace_target_info);
/* If we fail to read the configuration, we lose some information, but the
tracing itself is not impacted. */
- TRY
+ try
{
btrace_read_config (&tinfo->conf);
}
- CATCH (err, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &err)
{
if (err.message != NULL)
- warning ("%s", err.message);
+ warning ("%s", err.what ());
}
- END_CATCH
return tinfo;
}
{
if (rs->buf[0] == 'E' && rs->buf[1] == '.')
error (_("Could not disable branch tracing for %s: %s"),
- target_pid_to_str (tinfo->ptid), &rs->buf[2]);
+ target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]);
else
error (_("Could not disable branch tracing for %s."),
- target_pid_to_str (tinfo->ptid));
+ target_pid_to_str (tinfo->ptid).c_str ());
}
xfree (tinfo);
return NULL;
}
+gdb::byte_vector
+remote_target::thread_info_to_thread_handle (struct thread_info *tp)
+{
+ remote_thread_info *priv = get_remote_thread_info (tp);
+ return priv->thread_handle;
+}
+
bool
remote_target::can_async_p ()
{
remote_g_packet_data_handle =
gdbarch_data_register_pre_init (remote_g_packet_data_init);
- remote_pspace_data
- = register_program_space_data_with_cleanup (NULL,
- remote_pspace_data_cleanup);
-
add_target (remote_target_info, remote_target::open);
add_target (extended_remote_target_info, extended_remote_target::open);
&setlist,
&showlist);
+ add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\
+Set watchdog timer."), _("\
+Show watchdog timer."), _("\
+When non-zero, this timeout is used instead of waiting forever for a target\n\
+to finish a low-level step or continue operation. If the specified amount\n\
+of time passes without a response from the target, an error occurs."),
+ NULL,
+ show_watchdog,
+ &setlist, &showlist);
+
/* Eventually initialize fileio. See fileio.c */
initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
-
- /* Take advantage of the fact that the TID field is not used, to tag
- special ptids with it set to != 0. */
- magic_null_ptid = ptid_t (42000, -1, 1);
- not_sent_ptid = ptid_t (42000, -2, 1);
- any_thread_ptid = ptid_t (42000, 0, 1);
}
projects / deliverable / binutils-gdb.git / blobdiff