* config/tc-mips.c (macro_build_jalr): Reverse a negative
[deliverable/binutils-gdb.git] / gdb / remote.c
index b60a89c6b20d425cb0a924476bd6273c96bc921d..6e9e242eeb8b2fdce1f895b9523ce8f493690301 100644 (file)
@@ -323,6 +323,10 @@ struct remote_state
   /* True if the stub reports support for static tracepoints.  */
   int static_tracepoints;
 
+  /* True if the stub reports support for installing tracepoint while
+     tracing.  */
+  int install_in_trace;
+
   /* True if the stub can continue running a trace while GDB is
      disconnected.  */
   int disconnected_tracing;
@@ -331,6 +335,9 @@ struct remote_state
      tracepoints while a trace experiment is running.  */
   int enable_disable_tracepoints;
 
+  /* True if the stub can collect strings using tracenz bytecode.  */
+  int string_tracing;
+
   /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
      responded to that.  */
   int ctrlc_pending_p;
@@ -1258,10 +1265,13 @@ enum {
   PACKET_ConditionalTracepoints,
   PACKET_FastTracepoints,
   PACKET_StaticTracepoints,
+  PACKET_InstallInTrace,
   PACKET_bc,
   PACKET_bs,
   PACKET_TracepointSource,
   PACKET_QAllow,
+  PACKET_qXfer_fdpic,
+  PACKET_QDisableRandomization,
   PACKET_MAX
 };
 
@@ -3280,6 +3290,17 @@ remote_start_remote (int from_tty, struct target_ops *target, int extended_p)
       /* Always add the main thread.  */
       add_thread_silent (inferior_ptid);
 
+      /* init_wait_for_inferior should be called before get_offsets in order
+        to manage `inserted' flag in bp loc in a correct state.
+        breakpoint_init_inferior, called from init_wait_for_inferior, set
+        `inserted' flag to 0, while before breakpoint_re_set, called from
+        start_remote, set `inserted' flag to 1.  In the initialization of
+        inferior, breakpoint_init_inferior should be called first, and then
+        breakpoint_re_set can be called.  If this order is broken, state of
+        `inserted' flag is wrong, and cause some problems on breakpoint
+        manipulation.  */
+      init_wait_for_inferior ();
+
       get_offsets ();          /* Get text, data & bss offsets.  */
 
       /* If we could not find a description using qXfer, and we know
@@ -3679,6 +3700,16 @@ remote_static_tracepoint_feature (const struct protocol_feature *feature,
   rs->static_tracepoints = (support == PACKET_ENABLE);
 }
 
+static void
+remote_install_in_trace_feature (const struct protocol_feature *feature,
+                                enum packet_support support,
+                                const char *value)
+{
+  struct remote_state *rs = get_remote_state ();
+
+  rs->install_in_trace = (support == PACKET_ENABLE);
+}
+
 static void
 remote_disconnected_tracing_feature (const struct protocol_feature *feature,
                                     enum packet_support support,
@@ -3699,6 +3730,16 @@ remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature
   rs->enable_disable_tracepoints = (support == PACKET_ENABLE);
 }
 
+static void
+remote_string_tracing_feature (const struct protocol_feature *feature,
+                              enum packet_support support,
+                              const char *value)
+{
+  struct remote_state *rs = get_remote_state ();
+
+  rs->string_tracing = (support == PACKET_ENABLE);
+}
+
 static struct protocol_feature remote_protocol_features[] = {
   { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 },
   { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet,
@@ -3735,6 +3776,8 @@ static struct protocol_feature remote_protocol_features[] = {
     PACKET_FastTracepoints },
   { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature,
     PACKET_StaticTracepoints },
+  {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature,
+   PACKET_InstallInTrace},
   { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature,
     -1 },
   { "ReverseContinue", PACKET_DISABLE, remote_supported_packet,
@@ -3747,6 +3790,12 @@ static struct protocol_feature remote_protocol_features[] = {
     PACKET_QAllow },
   { "EnableDisableTracepoints", PACKET_DISABLE,
     remote_enable_disable_tracepoint_feature, -1 },
+  { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet,
+    PACKET_qXfer_fdpic },
+  { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet,
+    PACKET_QDisableRandomization },
+  { "tracenz", PACKET_DISABLE,
+    remote_string_tracing_feature, -1 },
 };
 
 static char *remote_support_xml;
@@ -4865,8 +4914,8 @@ remote_console_output (char *msg)
       tb[1] = 0;
       fputs_unfiltered (tb, gdb_stdtarg);
     }
-    gdb_flush (gdb_stdtarg);
-  }
+  gdb_flush (gdb_stdtarg);
+}
 
 typedef struct cached_reg
 {
@@ -4884,6 +4933,10 @@ struct stop_reply
 
   struct target_waitstatus ws;
 
+  /* Expedited registers.  This makes remote debugging a bit more
+     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;
 
   int stopped_by_watchpoint_p;
@@ -6317,7 +6370,7 @@ remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
 
   if (todo <= 0)
     internal_error (__FILE__, __LINE__,
-                   _("minumum packet size too small to write data"));
+                   _("minimum packet size too small to write data"));
 
   /* If we already need another packet, then try to align the end
      of this packet to a useful boundary.  */
@@ -7465,6 +7518,28 @@ extended_remote_mourn (struct target_ops *ops)
   extended_remote_mourn_1 (ops);
 }
 
+static int
+extended_remote_supports_disable_randomization (void)
+{
+  return (remote_protocol_packets[PACKET_QDisableRandomization].support
+         == PACKET_ENABLE);
+}
+
+static void
+extended_remote_disable_randomization (int val)
+{
+  struct remote_state *rs = get_remote_state ();
+  char *reply;
+
+  sprintf (rs->buf, "QDisableRandomization:%x", val);
+  putpkt (rs->buf);
+  reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+  if (*reply == '\0')
+    error (_("Target does not support QDisableRandomization."));
+  if (strcmp (reply, "OK") != 0)
+    error (_("Bogus QDisableRandomization reply from target: %s"), reply);
+}
+
 static int
 extended_remote_run (char *args)
 {
@@ -7541,6 +7616,10 @@ extended_remote_create_inferior_1 (char *exec_file, char *args,
   if (target_can_async_p ())
     target_async (inferior_event_handler, 0);
 
+  /* Disable address space randomization if requested (and supported).  */
+  if (extended_remote_supports_disable_randomization ())
+    extended_remote_disable_randomization (disable_randomization);
+
   /* Now restart the remote server.  */
   if (extended_remote_run (args) == -1)
     {
@@ -7752,8 +7831,22 @@ remote_remove_watchpoint (CORE_ADDR addr, int len, int type,
 
 
 int remote_hw_watchpoint_limit = -1;
+int remote_hw_watchpoint_length_limit = -1;
 int remote_hw_breakpoint_limit = -1;
 
+static int
+remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
+{
+  if (remote_hw_watchpoint_length_limit == 0)
+    return 0;
+  else if (remote_hw_watchpoint_length_limit < 0)
+    return 1;
+  else if (len <= remote_hw_watchpoint_length_limit)
+    return 1;
+  else
+    return 0;
+}
+
 static int
 remote_check_watch_resources (int type, int cnt, int ot)
 {
@@ -8277,6 +8370,10 @@ remote_xfer_partial (struct target_ops *ops, enum target_object object,
       return remote_read_qxfer
        (ops, "traceframe-info", annex, readbuf, offset, len,
         &remote_protocol_packets[PACKET_qXfer_traceframe_info]);
+
+    case TARGET_OBJECT_FDPIC:
+      return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len,
+                               &remote_protocol_packets[PACKET_qXfer_fdpic]);
     default:
       return -1;
     }
@@ -9628,6 +9725,13 @@ remote_supports_non_stop (void)
   return 1;
 }
 
+static int
+remote_supports_disable_randomization (void)
+{
+  /* Only supported in extended mode.  */
+  return 0;
+}
+
 static int
 remote_supports_multi_process (void)
 {
@@ -9660,6 +9764,14 @@ remote_supports_static_tracepoints (void)
   return rs->static_tracepoints;
 }
 
+static int
+remote_supports_install_in_trace (void)
+{
+  struct remote_state *rs = get_remote_state ();
+
+  return rs->install_in_trace;
+}
+
 static int
 remote_supports_enable_disable_tracepoint (void)
 {
@@ -9668,6 +9780,14 @@ remote_supports_enable_disable_tracepoint (void)
   return rs->enable_disable_tracepoints;
 }
 
+static int
+remote_supports_string_tracing (void)
+{
+  struct remote_state *rs = get_remote_state ();
+
+  return rs->string_tracing;
+}
+
 static void
 remote_trace_init (void)
 {
@@ -9740,9 +9860,9 @@ remote_download_command_source (int num, ULONGEST addr,
 }
 
 static void
-remote_download_tracepoint (struct breakpoint *t)
+remote_download_tracepoint (struct bp_location *loc)
 {
-  struct bp_location *loc;
+
   CORE_ADDR tpaddr;
   char addrbuf[40];
   char buf[2048];
@@ -9753,170 +9873,184 @@ remote_download_tracepoint (struct breakpoint *t)
   struct agent_expr *aexpr;
   struct cleanup *aexpr_chain = NULL;
   char *pkt;
-
-  /* Iterate over all the tracepoint locations.  It's up to the target to
-     notice multiple tracepoint packets with the same number but different
-     addresses, and treat them as multiple locations.  */
-  for (loc = t->loc; loc; loc = loc->next)
-    {
-      encode_actions (t, loc, &tdp_actions, &stepping_actions);
-      old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
-                               tdp_actions);
-      (void) make_cleanup (free_actions_list_cleanup_wrapper,
-                          stepping_actions);
-
-      tpaddr = loc->address;
-      sprintf_vma (addrbuf, tpaddr);
-      sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number, 
-              addrbuf, /* address */
-              (t->enable_state == bp_enabled ? 'E' : 'D'),
-              t->step_count, t->pass_count);
-      /* Fast tracepoints are mostly handled by the target, but we can
-        tell the target how big of an instruction block should be moved
-        around.  */
-      if (t->type == bp_fast_tracepoint)
+  struct breakpoint *b = loc->owner;
+  struct tracepoint *t = (struct tracepoint *) b;
+
+  encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions);
+  old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
+                           tdp_actions);
+  (void) make_cleanup (free_actions_list_cleanup_wrapper,
+                      stepping_actions);
+
+  tpaddr = loc->address;
+  sprintf_vma (addrbuf, tpaddr);
+  sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", b->number,
+          addrbuf, /* address */
+          (b->enable_state == bp_enabled ? 'E' : 'D'),
+          t->step_count, t->pass_count);
+  /* Fast tracepoints are mostly handled by the target, but we can
+     tell the target how big of an instruction block should be moved
+     around.  */
+  if (b->type == bp_fast_tracepoint)
+    {
+      /* Only test for support at download time; we may not know
+        target capabilities at definition time.  */
+      if (remote_supports_fast_tracepoints ())
        {
-         /* Only test for support at download time; we may not know
-            target capabilities at definition time.  */
-         if (remote_supports_fast_tracepoints ())
-           {
-             int isize;
+         int isize;
 
-             if (gdbarch_fast_tracepoint_valid_at (target_gdbarch,
-                                                   tpaddr, &isize, NULL))
-               sprintf (buf + strlen (buf), ":F%x", isize);
-             else
-               /* If it passed validation at definition but fails now,
-                  something is very wrong.  */
-               internal_error (__FILE__, __LINE__,
-                               _("Fast tracepoint not "
-                                 "valid during download"));
-           }
+         if (gdbarch_fast_tracepoint_valid_at (target_gdbarch,
+                                               tpaddr, &isize, NULL))
+           sprintf (buf + strlen (buf), ":F%x", isize);
          else
-           /* Fast tracepoints are functionally identical to regular
-              tracepoints, so don't take lack of support as a reason to
-              give up on the trace run.  */
-           warning (_("Target does not support fast tracepoints, "
-                      "downloading %d as regular tracepoint"), t->number);
+           /* If it passed validation at definition but fails now,
+              something is very wrong.  */
+           internal_error (__FILE__, __LINE__,
+                           _("Fast tracepoint not "
+                             "valid during download"));
        }
-      else if (t->type == bp_static_tracepoint)
+      else
+       /* Fast tracepoints are functionally identical to regular
+          tracepoints, so don't take lack of support as a reason to
+          give up on the trace run.  */
+       warning (_("Target does not support fast tracepoints, "
+                  "downloading %d as regular tracepoint"), b->number);
+    }
+  else if (b->type == bp_static_tracepoint)
+    {
+      /* Only test for support at download time; we may not know
+        target capabilities at definition time.  */
+      if (remote_supports_static_tracepoints ())
        {
-         /* Only test for support at download time; we may not know
-            target capabilities at definition time.  */
-         if (remote_supports_static_tracepoints ())
-           {
-             struct static_tracepoint_marker marker;
+         struct static_tracepoint_marker marker;
 
-             if (target_static_tracepoint_marker_at (tpaddr, &marker))
-               strcat (buf, ":S");
-             else
-               error (_("Static tracepoint not valid during download"));
-           }
+         if (target_static_tracepoint_marker_at (tpaddr, &marker))
+           strcat (buf, ":S");
          else
-           /* Fast tracepoints are functionally identical to regular
-              tracepoints, so don't take lack of support as a reason
-              to give up on the trace run.  */
-           error (_("Target does not support static tracepoints"));
+           error (_("Static tracepoint not valid during download"));
        }
-      /* If the tracepoint has a conditional, make it into an agent
-        expression and append to the definition.  */
-      if (loc->cond)
+      else
+       /* Fast tracepoints are functionally identical to regular
+          tracepoints, so don't take lack of support as a reason
+          to give up on the trace run.  */
+       error (_("Target does not support static tracepoints"));
+    }
+  /* If the tracepoint has a conditional, make it into an agent
+     expression and append to the definition.  */
+  if (loc->cond)
+    {
+      /* Only test support at download time, we may not know target
+        capabilities at definition time.  */
+      if (remote_supports_cond_tracepoints ())
        {
-         /* Only test support at download time, we may not know target
-            capabilities at definition time.  */
-         if (remote_supports_cond_tracepoints ())
-           {
-             aexpr = gen_eval_for_expr (tpaddr, loc->cond);
-             aexpr_chain = make_cleanup_free_agent_expr (aexpr);
-             sprintf (buf + strlen (buf), ":X%x,", aexpr->len);
-             pkt = buf + strlen (buf);
-             for (ndx = 0; ndx < aexpr->len; ++ndx)
-               pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
-             *pkt = '\0';
-             do_cleanups (aexpr_chain);
-           }
-         else
-           warning (_("Target does not support conditional tracepoints, "
-                      "ignoring tp %d cond"), t->number);
+         aexpr = gen_eval_for_expr (tpaddr, loc->cond);
+         aexpr_chain = make_cleanup_free_agent_expr (aexpr);
+         sprintf (buf + strlen (buf), ":X%x,", aexpr->len);
+         pkt = buf + strlen (buf);
+         for (ndx = 0; ndx < aexpr->len; ++ndx)
+           pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
+         *pkt = '\0';
+         do_cleanups (aexpr_chain);
        }
+      else
+       warning (_("Target does not support conditional tracepoints, "
+                  "ignoring tp %d cond"), b->number);
+    }
 
-  if (t->commands || *default_collect)
-       strcat (buf, "-");
-      putpkt (buf);
-      remote_get_noisy_reply (&target_buf, &target_buf_size);
-      if (strcmp (target_buf, "OK"))
-       error (_("Target does not support tracepoints."));
+  if (b->commands || *default_collect)
+    strcat (buf, "-");
+  putpkt (buf);
+  remote_get_noisy_reply (&target_buf, &target_buf_size);
+  if (strcmp (target_buf, "OK"))
+    error (_("Target does not support tracepoints."));
 
-      /* do_single_steps (t); */
-      if (tdp_actions)
+  /* do_single_steps (t); */
+  if (tdp_actions)
+    {
+      for (ndx = 0; tdp_actions[ndx]; ndx++)
        {
-         for (ndx = 0; tdp_actions[ndx]; ndx++)
-           {
-             QUIT;     /* Allow user to bail out with ^C.  */
-             sprintf (buf, "QTDP:-%x:%s:%s%c",
-                      t->number, addrbuf, /* address */
-                      tdp_actions[ndx],
-                      ((tdp_actions[ndx + 1] || stepping_actions)
-                       ? '-' : 0));
-             putpkt (buf);
-             remote_get_noisy_reply (&target_buf,
-                                     &target_buf_size);
-             if (strcmp (target_buf, "OK"))
-               error (_("Error on target while setting tracepoints."));
-           }
+         QUIT; /* Allow user to bail out with ^C.  */
+         sprintf (buf, "QTDP:-%x:%s:%s%c",
+                  b->number, addrbuf, /* address */
+                  tdp_actions[ndx],
+                  ((tdp_actions[ndx + 1] || stepping_actions)
+                   ? '-' : 0));
+         putpkt (buf);
+         remote_get_noisy_reply (&target_buf,
+                                 &target_buf_size);
+         if (strcmp (target_buf, "OK"))
+           error (_("Error on target while setting tracepoints."));
        }
-      if (stepping_actions)
+    }
+  if (stepping_actions)
+    {
+      for (ndx = 0; stepping_actions[ndx]; ndx++)
        {
-         for (ndx = 0; stepping_actions[ndx]; ndx++)
-           {
-             QUIT;     /* Allow user to bail out with ^C.  */
-             sprintf (buf, "QTDP:-%x:%s:%s%s%s",
-                      t->number, addrbuf, /* address */
-                      ((ndx == 0) ? "S" : ""),
-                      stepping_actions[ndx],
-                      (stepping_actions[ndx + 1] ? "-" : ""));
-             putpkt (buf);
-             remote_get_noisy_reply (&target_buf,
-                                     &target_buf_size);
-             if (strcmp (target_buf, "OK"))
-               error (_("Error on target while setting tracepoints."));
-           }
+         QUIT; /* Allow user to bail out with ^C.  */
+         sprintf (buf, "QTDP:-%x:%s:%s%s%s",
+                  b->number, addrbuf, /* address */
+                  ((ndx == 0) ? "S" : ""),
+                  stepping_actions[ndx],
+                  (stepping_actions[ndx + 1] ? "-" : ""));
+         putpkt (buf);
+         remote_get_noisy_reply (&target_buf,
+                                 &target_buf_size);
+         if (strcmp (target_buf, "OK"))
+           error (_("Error on target while setting tracepoints."));
        }
+    }
 
-      if (remote_protocol_packets[PACKET_TracepointSource].support
-         == PACKET_ENABLE)
+  if (remote_protocol_packets[PACKET_TracepointSource].support
+      == PACKET_ENABLE)
+    {
+      if (b->addr_string)
        {
-         if (t->addr_string)
-           {
-             strcpy (buf, "QTDPsrc:");
-             encode_source_string (t->number, loc->address,
-                                   "at", t->addr_string, buf + strlen (buf),
-                                   2048 - strlen (buf));
+         strcpy (buf, "QTDPsrc:");
+         encode_source_string (b->number, loc->address,
+                               "at", b->addr_string, buf + strlen (buf),
+                               2048 - strlen (buf));
 
-             putpkt (buf);
-             remote_get_noisy_reply (&target_buf, &target_buf_size);
-             if (strcmp (target_buf, "OK"))
-               warning (_("Target does not support source download."));
-           }
-         if (t->cond_string)
-           {
-             strcpy (buf, "QTDPsrc:");
-             encode_source_string (t->number, loc->address,
-                                   "cond", t->cond_string, buf + strlen (buf),
-                                   2048 - strlen (buf));
-             putpkt (buf);
-             remote_get_noisy_reply (&target_buf, &target_buf_size);
-             if (strcmp (target_buf, "OK"))
-               warning (_("Target does not support source download."));
-           }
-         remote_download_command_source (t->number, loc->address,
-                                         breakpoint_commands (t));
+         putpkt (buf);
+         remote_get_noisy_reply (&target_buf, &target_buf_size);
+         if (strcmp (target_buf, "OK"))
+           warning (_("Target does not support source download."));
        }
-
-      do_cleanups (old_chain);
+      if (b->cond_string)
+       {
+         strcpy (buf, "QTDPsrc:");
+         encode_source_string (b->number, loc->address,
+                               "cond", b->cond_string, buf + strlen (buf),
+                               2048 - strlen (buf));
+         putpkt (buf);
+         remote_get_noisy_reply (&target_buf, &target_buf_size);
+         if (strcmp (target_buf, "OK"))
+           warning (_("Target does not support source download."));
+       }
+      remote_download_command_source (b->number, loc->address,
+                                     breakpoint_commands (b));
     }
+
+  do_cleanups (old_chain);
 }
 
+static int
+remote_can_download_tracepoint (void)
+{
+  struct trace_status *ts = current_trace_status ();
+  int status = remote_get_trace_status (ts);
+
+  if (status == -1 || !ts->running_known || !ts->running)
+    return 0;
+
+  /* If we are in a tracing experiment, but remote stub doesn't support
+     installing tracepoint in trace, we have to return.  */
+  if (!remote_supports_install_in_trace ())
+    return 0;
+
+  return 1;
+}
+
+
 static void
 remote_download_trace_state_variable (struct trace_state_variable *tsv)
 {
@@ -9977,6 +10111,7 @@ remote_trace_set_readonly_regions (void)
   bfd_size_type size;
   bfd_vma vma;
   int anysecs = 0;
+  int offset = 0;
 
   if (!exec_bfd)
     return;                    /* No information to give.  */
@@ -9985,6 +10120,7 @@ remote_trace_set_readonly_regions (void)
   for (s = exec_bfd->sections; s; s = s->next)
     {
       char tmp1[40], tmp2[40];
+      int sec_length;
 
       if ((s->flags & SEC_LOAD) == 0 ||
       /*  (s->flags & SEC_CODE) == 0 || */
@@ -9996,8 +10132,17 @@ remote_trace_set_readonly_regions (void)
       size = bfd_get_section_size (s);
       sprintf_vma (tmp1, vma);
       sprintf_vma (tmp2, vma + size);
-      sprintf (target_buf + strlen (target_buf), 
-              ":%s,%s", tmp1, tmp2);
+      sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2);
+      if (offset + sec_length + 1 > target_buf_size)
+       {
+         if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support
+             != PACKET_ENABLE)
+           warning (_("\
+Too many sections for read-only sections definition packet."));
+         break;
+       }
+      sprintf (target_buf + offset, ":%s,%s", tmp1, tmp2);
+      offset += sec_length;
     }
   if (anysecs)
     {
@@ -10020,14 +10165,25 @@ remote_trace_start (void)
 static int
 remote_get_trace_status (struct trace_status *ts)
 {
-  char *p;
+  /* Initialize it just to avoid a GCC false warning.  */
+  char *p = NULL;
   /* FIXME we need to get register block size some other way.  */
   extern int trace_regblock_size;
+  volatile struct gdb_exception ex;
 
   trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet;
 
   putpkt ("qTStatus");
-  p = remote_get_noisy_reply (&target_buf, &target_buf_size);
+
+  TRY_CATCH (ex, RETURN_MASK_ERROR)
+    {
+      p = remote_get_noisy_reply (&target_buf, &target_buf_size);
+    }
+  if (ex.reason < 0)
+    {
+      exception_fprintf (gdb_stderr, ex, "qTStatus: ");
+      return -1;
+    }
 
   /* If the remote target doesn't do tracing, flag it.  */
   if (*p == '\0')
@@ -10179,7 +10335,7 @@ remote_save_trace_data (const char *filename)
   *p++ = '\0';
   putpkt (rs->buf);
   reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
-  if (*reply != '\0')
+  if (*reply == '\0')
     error (_("Target does not support this command."));
   if (strcmp (reply, "OK") != 0)
     error (_("Bogus reply from target: %s"), reply);
@@ -10295,6 +10451,32 @@ remote_traceframe_info (void)
   return NULL;
 }
 
+/* Handle the qTMinFTPILen packet.  Returns the minimum length of
+   instruction on which a fast tracepoint may be placed.  Returns -1
+   if the packet is not supported, and 0 if the minimum instruction
+   length is unknown.  */
+
+static int
+remote_get_min_fast_tracepoint_insn_len (void)
+{
+  struct remote_state *rs = get_remote_state ();
+  char *reply;
+
+  sprintf (rs->buf, "qTMinFTPILen");
+  putpkt (rs->buf);
+  reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+  if (*reply == '\0')
+    return -1;
+  else
+    {
+      ULONGEST min_insn_len;
+
+      unpack_varlen_hex (reply, &min_insn_len);
+
+      return (int) min_insn_len;
+    }
+}
+
 static void
 init_remote_ops (void)
 {
@@ -10322,6 +10504,8 @@ Specify the serial device it is connected to\n\
   remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
   remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
   remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
+  remote_ops.to_region_ok_for_hw_watchpoint
+     = remote_region_ok_for_hw_watchpoint;
   remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
   remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
   remote_ops.to_kill = remote_kill;
@@ -10359,9 +10543,13 @@ Specify the serial device it is connected to\n\
   remote_ops.to_terminal_ours = remote_terminal_ours;
   remote_ops.to_supports_non_stop = remote_supports_non_stop;
   remote_ops.to_supports_multi_process = remote_supports_multi_process;
+  remote_ops.to_supports_disable_randomization
+    = remote_supports_disable_randomization;
   remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint;
+  remote_ops.to_supports_string_tracing = remote_supports_string_tracing;
   remote_ops.to_trace_init = remote_trace_init;
   remote_ops.to_download_tracepoint = remote_download_tracepoint;
+  remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint;
   remote_ops.to_download_trace_state_variable
     = remote_download_trace_state_variable;
   remote_ops.to_enable_tracepoint = remote_enable_tracepoint;
@@ -10378,6 +10566,7 @@ Specify the serial device it is connected to\n\
   remote_ops.to_upload_trace_state_variables
     = remote_upload_trace_state_variables;
   remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data;
+  remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len;
   remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing;
   remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer;
   remote_ops.to_core_of_thread = remote_core_of_thread;
@@ -10411,6 +10600,8 @@ Specify the serial device it is connected to (e.g. /dev/ttya).";
   extended_remote_ops.to_detach = extended_remote_detach;
   extended_remote_ops.to_attach = extended_remote_attach;
   extended_remote_ops.to_kill = extended_remote_kill;
+  extended_remote_ops.to_supports_disable_randomization
+    = extended_remote_supports_disable_randomization;
 }
 
 static int
@@ -10491,6 +10682,7 @@ show_remote_cmd (char *args, int from_tty)
      the redundant "show remote Z-packet" and the legacy aliases.  */
   struct cleanup *showlist_chain;
   struct cmd_list_element *list = remote_show_cmdlist;
+  struct ui_out *uiout = current_uiout;
 
   showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
   for (; list != NULL; list = list->next)
@@ -10717,6 +10909,15 @@ Specify a negative limit for unlimited."),
                                           number of target hardware
                                           watchpoints is %s.  */
                            &remote_set_cmdlist, &remote_show_cmdlist);
+  add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class,
+                           &remote_hw_watchpoint_length_limit, _("\
+Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
+Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
+Specify a negative limit for unlimited."),
+                           NULL, NULL, /* FIXME: i18n: The maximum
+                                           length (in bytes) of a target
+                                           hardware watchpoint is %s.  */
+                           &remote_set_cmdlist, &remote_show_cmdlist);
   add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class,
                            &remote_hw_breakpoint_limit, _("\
 Set the maximum number of target hardware breakpoints."), _("\
@@ -10867,9 +11068,18 @@ Show the maximum size of the address (in bits) in a memory packet."), NULL,
   add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints],
                         "StaticTracepoints", "static-tracepoints", 0);
 
+  add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace],
+                        "InstallInTrace", "install-in-trace", 0);
+
   add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read],
                          "qXfer:statictrace:read", "read-sdata-object", 0);
 
+  add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic],
+                        "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
+
+  add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization],
+                        "QDisableRandomization", "disable-randomization", 0);
+
   /* Keep the old ``set remote Z-packet ...'' working.  Each individual
      Z sub-packet has its own set and show commands, but users may
      have sets to this variable in their .gdbinit files (or in their
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