Per-inferior/Inferior-qualified thread IDs
[binutils-gdb.git] / gdb / breakpoint.c
index 91a53b915118b229d04bc228c2f5361936709030..72da4ef7aa9a3ae1f1188c173ba00a7652237bc5 100644 (file)
@@ -1,6 +1,6 @@
 /* Everything about breakpoints, for GDB.
 
-   Copyright (C) 1986-2015 Free Software Foundation, Inc.
+   Copyright (C) 1986-2016 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -67,6 +67,9 @@
 #include "dummy-frame.h"
 #include "interps.h"
 #include "format.h"
+#include "location.h"
+#include "thread-fsm.h"
+#include "tid-parse.h"
 
 /* readline include files */
 #include "readline/readline.h"
@@ -108,10 +111,10 @@ static int breakpoint_re_set_one (void *);
 
 static void breakpoint_re_set_default (struct breakpoint *);
 
-static void create_sals_from_address_default (char **,
-                                             struct linespec_result *,
-                                             enum bptype, char *,
-                                             char **);
+static void
+  create_sals_from_location_default (const struct event_location *location,
+                                    struct linespec_result *canonical,
+                                    enum bptype type_wanted);
 
 static void create_breakpoints_sal_default (struct gdbarch *,
                                            struct linespec_result *,
@@ -121,8 +124,9 @@ static void create_breakpoints_sal_default (struct gdbarch *,
                                            const struct breakpoint_ops *,
                                            int, int, int, unsigned);
 
-static void decode_linespec_default (struct breakpoint *, char **,
-                                    struct symtabs_and_lines *);
+static void decode_location_default (struct breakpoint *b,
+                                    const struct event_location *location,
+                                    struct symtabs_and_lines *sals);
 
 static void clear_command (char *, int);
 
@@ -170,6 +174,10 @@ static int breakpoint_location_address_match (struct bp_location *bl,
                                              struct address_space *aspace,
                                              CORE_ADDR addr);
 
+static int breakpoint_location_address_range_overlap (struct bp_location *,
+                                                     struct address_space *,
+                                                     CORE_ADDR, int);
+
 static void breakpoints_info (char *, int);
 
 static void watchpoints_info (char *, int);
@@ -723,11 +731,11 @@ clear_breakpoint_hit_counts (void)
 static struct counted_command_line *
 alloc_counted_command_line (struct command_line *commands)
 {
-  struct counted_command_line *result
-    = xmalloc (sizeof (struct counted_command_line));
+  struct counted_command_line *result = XNEW (struct counted_command_line);
 
   result->refc = 1;
   result->commands = commands;
+
   return result;
 }
 
@@ -763,7 +771,7 @@ decref_counted_command_line (struct counted_command_line **cmdp)
 static void
 do_cleanup_counted_command_line (void *arg)
 {
-  decref_counted_command_line (arg);
+  decref_counted_command_line ((struct counted_command_line **) arg);
 }
 
 /* Create a cleanup that calls decref_counted_command_line on the
@@ -922,8 +930,8 @@ show_condition_evaluation_mode (struct ui_file *file, int from_tty,
 static int
 bp_location_compare_addrs (const void *ap, const void *bp)
 {
-  struct bp_location *a = *(void **) ap;
-  struct bp_location *b = *(void **) bp;
+  const struct bp_location *a = *(const struct bp_location **) ap;
+  const struct bp_location *b = *(const struct bp_location **) bp;
 
   if (a->address == b->address)
     return 0;
@@ -948,9 +956,10 @@ get_first_locp_gte_addr (CORE_ADDR address)
   dummy_loc.address = address;
 
   /* Find a close match to the first location at ADDRESS.  */
-  locp_found = bsearch (&dummy_locp, bp_location, bp_location_count,
-                       sizeof (struct bp_location **),
-                       bp_location_compare_addrs);
+  locp_found = ((struct bp_location **)
+               bsearch (&dummy_locp, bp_location, bp_location_count,
+                        sizeof (struct bp_location **),
+                        bp_location_compare_addrs));
 
   /* Nothing was found, nothing left to do.  */
   if (locp_found == NULL)
@@ -1320,7 +1329,7 @@ breakpoint_set_task (struct breakpoint *b, int task)
 void
 check_tracepoint_command (char *line, void *closure)
 {
-  struct breakpoint *b = closure;
+  struct breakpoint *b = (struct breakpoint *) closure;
 
   validate_actionline (line, b);
 }
@@ -1351,7 +1360,7 @@ struct commands_info
 static void
 do_map_commands_command (struct breakpoint *b, void *data)
 {
-  struct commands_info *info = data;
+  struct commands_info *info = (struct commands_info *) data;
 
   if (info->cmd == NULL)
     {
@@ -1767,6 +1776,36 @@ extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val)
   return bit_val;
 }
 
+/* Allocate a dummy location and add it to B, which must be a software
+   watchpoint.  This is required because even if a software watchpoint
+   is not watching any memory, bpstat_stop_status requires a location
+   to be able to report stops.  */
+
+static void
+software_watchpoint_add_no_memory_location (struct breakpoint *b,
+                                           struct program_space *pspace)
+{
+  gdb_assert (b->type == bp_watchpoint && b->loc == NULL);
+
+  b->loc = allocate_bp_location (b);
+  b->loc->pspace = pspace;
+  b->loc->address = -1;
+  b->loc->length = -1;
+}
+
+/* Returns true if B is a software watchpoint that is not watching any
+   memory (e.g., "watch $pc").  */
+
+static int
+is_no_memory_software_watchpoint (struct breakpoint *b)
+{
+  return (b->type == bp_watchpoint
+         && b->loc != NULL
+         && b->loc->next == NULL
+         && b->loc->address == -1
+         && b->loc->length == -1);
+}
+
 /* Assuming that B is a watchpoint:
    - Reparse watchpoint expression, if REPARSE is non-zero
    - Evaluate expression and store the result in B->val
@@ -2130,14 +2169,7 @@ update_watchpoint (struct watchpoint *b, int reparse)
         bpstat_stop_status requires a location to be able to report
         stops, so make sure there's at least a dummy one.  */
       if (b->base.type == bp_watchpoint && b->base.loc == NULL)
-       {
-         struct breakpoint *base = &b->base;
-         base->loc = allocate_bp_location (base);
-         base->loc->pspace = frame_pspace;
-         base->loc->address = -1;
-         base->loc->length = -1;
-         base->loc->watchpoint_type = -1;
-       }
+       software_watchpoint_add_no_memory_location (&b->base, frame_pspace);
     }
   else if (!within_current_scope)
     {
@@ -3113,7 +3145,7 @@ insert_breakpoint_locations (void)
         the thread no longer exists.  ALL_BP_LOCATIONS bp_location
         has BL->OWNER always non-NULL.  */
       if (bl->owner->thread != -1
-         && !valid_thread_id (bl->owner->thread))
+         && !valid_global_thread_id (bl->owner->thread))
        continue;
 
       switch_to_program_space_and_thread (bl->pspace);
@@ -3213,13 +3245,13 @@ remove_threaded_breakpoints (struct thread_info *tp, int silent)
 
   ALL_BREAKPOINTS_SAFE (b, b_tmp)
     {
-      if (b->thread == tp->num && user_breakpoint_p (b))
+      if (b->thread == tp->global_num && user_breakpoint_p (b))
        {
          b->disposition = disp_del_at_next_stop;
 
          printf_filtered (_("\
-Thread-specific breakpoint %d deleted - thread %d no longer in the thread list.\n"),
-                         b->number, tp->num);
+Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"),
+                          b->number, print_thread_id (tp));
 
          /* Hide it from the user.  */
          b->number = 0;
@@ -3390,11 +3422,12 @@ get_breakpoint_objfile_data (struct objfile *objfile)
 {
   struct breakpoint_objfile_data *bp_objfile_data;
 
-  bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key);
+  bp_objfile_data = ((struct breakpoint_objfile_data *)
+                    objfile_data (objfile, breakpoint_objfile_key));
   if (bp_objfile_data == NULL)
     {
-      bp_objfile_data = obstack_alloc (&objfile->objfile_obstack,
-                                      sizeof (*bp_objfile_data));
+      bp_objfile_data =
+       XOBNEW (&objfile->objfile_obstack, struct breakpoint_objfile_data);
 
       memset (bp_objfile_data, 0, sizeof (*bp_objfile_data));
       set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data);
@@ -3405,7 +3438,8 @@ get_breakpoint_objfile_data (struct objfile *objfile)
 static void
 free_breakpoint_probes (struct objfile *obj, void *data)
 {
-  struct breakpoint_objfile_data *bp_objfile_data = data;
+  struct breakpoint_objfile_data *bp_objfile_data
+    = (struct breakpoint_objfile_data *) data;
 
   VEC_free (probe_p, bp_objfile_data->longjmp_probes);
   VEC_free (probe_p, bp_objfile_data->exception_probes);
@@ -3422,6 +3456,7 @@ create_overlay_event_breakpoint (void)
       struct breakpoint *b;
       struct breakpoint_objfile_data *bp_objfile_data;
       CORE_ADDR addr;
+      struct explicit_location explicit_loc;
 
       bp_objfile_data = get_breakpoint_objfile_data (objfile);
 
@@ -3446,7 +3481,9 @@ create_overlay_event_breakpoint (void)
       b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
                                       bp_overlay_event,
                                      &internal_breakpoint_ops);
-      b->addr_string = xstrdup (func_name);
+      initialize_explicit_location (&explicit_loc);
+      explicit_loc.function_name = ASTRDUP (func_name);
+      b->location = new_explicit_location (&explicit_loc);
 
       if (overlay_debugging == ovly_auto)
         {
@@ -3527,7 +3564,8 @@ create_longjmp_master_breakpoint (void)
                                                                 objfile),
                                              bp_longjmp_master,
                                              &internal_breakpoint_ops);
-             b->addr_string = xstrdup ("-probe-stap libc:longjmp");
+             b->location
+               = new_probe_location ("-probe-stap libc:longjmp");
              b->enable_state = bp_disabled;
            }
 
@@ -3542,6 +3580,7 @@ create_longjmp_master_breakpoint (void)
          struct breakpoint *b;
          const char *func_name;
          CORE_ADDR addr;
+         struct explicit_location explicit_loc;
 
          if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym))
            continue;
@@ -3564,7 +3603,9 @@ create_longjmp_master_breakpoint (void)
          addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]);
          b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master,
                                          &internal_breakpoint_ops);
-         b->addr_string = xstrdup (func_name);
+         initialize_explicit_location (&explicit_loc);
+         explicit_loc.function_name = ASTRDUP (func_name);
+         b->location = new_explicit_location (&explicit_loc);
          b->enable_state = bp_disabled;
        }
     }
@@ -3595,6 +3636,7 @@ create_std_terminate_master_breakpoint (void)
     {
       struct breakpoint *b;
       struct breakpoint_objfile_data *bp_objfile_data;
+      struct explicit_location explicit_loc;
 
       bp_objfile_data = get_breakpoint_objfile_data (objfile);
 
@@ -3620,7 +3662,9 @@ create_std_terminate_master_breakpoint (void)
       b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
                                       bp_std_terminate_master,
                                      &internal_breakpoint_ops);
-      b->addr_string = xstrdup (func_name);
+      initialize_explicit_location (&explicit_loc);
+      explicit_loc.function_name = ASTRDUP (func_name);
+      b->location = new_explicit_location (&explicit_loc);
       b->enable_state = bp_disabled;
     }
   }
@@ -3644,6 +3688,7 @@ create_exception_master_breakpoint (void)
       struct gdbarch *gdbarch;
       struct breakpoint_objfile_data *bp_objfile_data;
       CORE_ADDR addr;
+      struct explicit_location explicit_loc;
 
       bp_objfile_data = get_breakpoint_objfile_data (objfile);
 
@@ -3690,7 +3735,8 @@ create_exception_master_breakpoint (void)
                                                                 objfile),
                                              bp_exception_master,
                                              &internal_breakpoint_ops);
-             b->addr_string = xstrdup ("-probe-stap libgcc:unwind");
+             b->location
+               = new_probe_location ("-probe-stap libgcc:unwind");
              b->enable_state = bp_disabled;
            }
 
@@ -3723,7 +3769,9 @@ create_exception_master_breakpoint (void)
                                                 &current_target);
       b = create_internal_breakpoint (gdbarch, addr, bp_exception_master,
                                      &internal_breakpoint_ops);
-      b->addr_string = xstrdup (func_name);
+      initialize_explicit_location (&explicit_loc);
+      explicit_loc.function_name = ASTRDUP (func_name);
+      b->location = new_explicit_location (&explicit_loc);
       b->enable_state = bp_disabled;
     }
 
@@ -3844,7 +3892,7 @@ update_breakpoints_after_exec (void)
     /* Without a symbolic address, we have little hope of the
        pre-exec() address meaning the same thing in the post-exec()
        a.out.  */
-    if (b->addr_string == NULL)
+    if (event_location_empty_p (b->location))
       {
        delete_breakpoint (b);
        continue;
@@ -4223,6 +4271,40 @@ breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc)
   return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here;
 }
 
+/* See breakpoint.h.  */
+
+int
+breakpoint_in_range_p (struct address_space *aspace,
+                      CORE_ADDR addr, ULONGEST len)
+{
+  struct bp_location *bl, **blp_tmp;
+
+  ALL_BP_LOCATIONS (bl, blp_tmp)
+    {
+      if (bl->loc_type != bp_loc_software_breakpoint
+         && bl->loc_type != bp_loc_hardware_breakpoint)
+       continue;
+
+      if ((breakpoint_enabled (bl->owner)
+          || bl->permanent)
+         && breakpoint_location_address_range_overlap (bl, aspace,
+                                                       addr, len))
+       {
+         if (overlay_debugging
+             && section_is_overlay (bl->section)
+             && !section_is_mapped (bl->section))
+           {
+             /* Unmapped overlay -- can't be a match.  */
+             continue;
+           }
+
+         return 1;
+       }
+    }
+
+  return 0;
+}
+
 /* Return true if there's a moribund breakpoint at PC.  */
 
 int
@@ -4646,7 +4728,7 @@ bpstat_do_actions_1 (bpstat *bsp)
 
       if (breakpoint_proceeded)
        {
-         if (interpreter_async && target_can_async_p ())
+         if (interpreter_async)
            /* If we are in async mode, then the target might be still
               running, not stopped at any breakpoint, so nothing for
               us to do here -- just return to the event loop.  */
@@ -5366,7 +5448,7 @@ bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid)
   /* If this is a thread/task-specific breakpoint, don't waste cpu
      evaluating the condition if this isn't the specified
      thread/task.  */
-  if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid))
+  if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid))
       || (b->task != 0 && b->task != ada_get_task_number (ptid)))
 
     {
@@ -5678,6 +5760,9 @@ handle_jit_event (void)
   struct frame_info *frame;
   struct gdbarch *gdbarch;
 
+  if (debug_infrun)
+    fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n");
+
   /* Switch terminal for any messages produced by
      breakpoint_re_set.  */
   target_terminal_ours_for_output ();
@@ -5869,16 +5954,13 @@ bpstat_what (bpstat bs_head)
       retval.main_action = max (retval.main_action, this_action);
     }
 
-  /* These operations may affect the bs->breakpoint_at state so they are
-     delayed after MAIN_ACTION is decided above.  */
-
-  if (jit_event)
-    {
-      if (debug_infrun)
-       fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n");
+  return retval;
+}
 
-      handle_jit_event ();
-    }
+void
+bpstat_run_callbacks (bpstat bs_head)
+{
+  bpstat bs;
 
   for (bs = bs_head; bs != NULL; bs = bs->next)
     {
@@ -5888,6 +5970,9 @@ bpstat_what (bpstat bs_head)
        continue;
       switch (b->type)
        {
+       case bp_jit_event:
+         handle_jit_event ();
+         break;
        case bp_gnu_ifunc_resolver:
          gnu_ifunc_resolver_stop (b);
          break;
@@ -5896,8 +5981,6 @@ bpstat_what (bpstat bs_head)
          break;
        }
     }
-
-  return retval;
 }
 
 /* Nonzero if we should step constantly (e.g. watchpoints on machines
@@ -6032,7 +6115,8 @@ print_breakpoint_location (struct breakpoint *b,
     set_current_program_space (loc->pspace);
 
   if (b->display_canonical)
-    ui_out_field_string (uiout, "what", b->addr_string);
+    ui_out_field_string (uiout, "what",
+                        event_location_to_string (b->location));
   else if (loc && loc->symtab)
     {
       struct symbol *sym 
@@ -6068,7 +6152,21 @@ print_breakpoint_location (struct breakpoint *b,
       do_cleanups (stb_chain);
     }
   else
-    ui_out_field_string (uiout, "pending", b->addr_string);
+    {
+      ui_out_field_string (uiout, "pending",
+                          event_location_to_string (b->location));
+      /* If extra_string is available, it could be holding a condition
+        or dprintf arguments.  In either case, make sure it is printed,
+        too, but only for non-MI streams.  */
+      if (!ui_out_is_mi_like_p (uiout) && b->extra_string != NULL)
+       {
+         if (b->type == bp_dprintf)
+           ui_out_text (uiout, ",");
+         else
+           ui_out_text (uiout, " ");
+         ui_out_text (uiout, b->extra_string);
+       }
+    }
 
   if (loc && is_breakpoint (b)
       && breakpoint_condition_evaluation_mode () == condition_evaluation_target
@@ -6419,7 +6517,14 @@ print_one_breakpoint_location (struct breakpoint *b,
     {
       /* FIXME should make an annotation for this.  */
       ui_out_text (uiout, "\tstop only in thread ");
-      ui_out_field_int (uiout, "thread", b->thread);
+      if (ui_out_is_mi_like_p (uiout))
+       ui_out_field_int (uiout, "thread", b->thread);
+      else
+       {
+         struct thread_info *thr = find_thread_global_id (b->thread);
+
+         ui_out_field_string (uiout, "thread", print_thread_id (thr));
+       }
       ui_out_text (uiout, "\n");
     }
   
@@ -6537,8 +6642,10 @@ print_one_breakpoint_location (struct breakpoint *b,
 
          ui_out_field_string (uiout, "original-location", w->exp_string);
        }
-      else if (b->addr_string)
-       ui_out_field_string (uiout, "original-location", b->addr_string);
+      else if (b->location != NULL
+              && event_location_to_string (b->location) != NULL)
+       ui_out_field_string (uiout, "original-location",
+                            event_location_to_string (b->location));
     }
 }
 
@@ -6591,15 +6698,15 @@ breakpoint_address_bits (struct breakpoint *b)
   int print_address_bits = 0;
   struct bp_location *loc;
 
+  /* Software watchpoints that aren't watching memory don't have an
+     address to print.  */
+  if (is_no_memory_software_watchpoint (b))
+    return 0;
+
   for (loc = b->loc; loc; loc = loc->next)
     {
       int addr_bit;
 
-      /* Software watchpoints that aren't watching memory don't have
-        an address to print.  */
-      if (b->type == bp_watchpoint && loc->watchpoint_type == -1)
-       continue;
-
       addr_bit = gdbarch_addr_bit (loc->gdbarch);
       if (addr_bit > print_address_bits)
        print_address_bits = addr_bit;
@@ -6616,7 +6723,8 @@ struct captured_breakpoint_query_args
 static int
 do_captured_breakpoint_query (struct ui_out *uiout, void *data)
 {
-  struct captured_breakpoint_query_args *args = data;
+  struct captured_breakpoint_query_args *args
+    = (struct captured_breakpoint_query_args *) data;
   struct breakpoint *b;
   struct bp_location *dummy_loc = NULL;
 
@@ -6930,14 +7038,14 @@ describe_other_breakpoints (struct gdbarch *gdbarch,
 \f
 
 /* Return true iff it is meaningful to use the address member of
-   BPT.  For some breakpoint types, the address member is irrelevant
-   and it makes no sense to attempt to compare it to other addresses
-   (or use it for any other purpose either).
+   BPT locations.  For some breakpoint types, the locations' address members
+   are irrelevant and it makes no sense to attempt to compare them to other
+   addresses (or use them for any other purpose either).
 
    More specifically, each of the following breakpoint types will
-   always have a zero valued address and we don't want to mark
+   always have a zero valued location address and we don't want to mark
    breakpoints of any of these types to be a duplicate of an actual
-   breakpoint at address zero:
+   breakpoint location at address zero:
 
       bp_watchpoint
       bp_catchpoint
@@ -7040,6 +7148,28 @@ breakpoint_location_address_match (struct bp_location *bl,
                                                 aspace, addr)));
 }
 
+/* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps
+   breakpoint BL.  BL may be a ranged breakpoint.  In most targets, a
+   match happens only if ASPACE matches the breakpoint's address
+   space.  On targets that have global breakpoints, the address space
+   doesn't really matter.  */
+
+static int
+breakpoint_location_address_range_overlap (struct bp_location *bl,
+                                          struct address_space *aspace,
+                                          CORE_ADDR addr, int len)
+{
+  if (gdbarch_has_global_breakpoints (target_gdbarch ())
+      || bl->pspace->aspace == aspace)
+    {
+      int bl_len = bl->length != 0 ? bl->length : 1;
+
+      if (mem_ranges_overlap (addr, len, bl->address, bl_len))
+       return 1;
+    }
+  return 0;
+}
+
 /* If LOC1 and LOC2's owners are not tracepoints, returns false directly.
    Then, if LOC1 and LOC2 represent the same tracepoint location, returns
    true, otherwise returns false.  */
@@ -7308,6 +7438,7 @@ init_raw_breakpoint_without_location (struct breakpoint *b,
   b->condition_not_parsed = 0;
   b->py_bp_object = NULL;
   b->related_breakpoint = b;
+  b->location = NULL;
 }
 
 /* Helper to set_raw_breakpoint below.  Creates a breakpoint
@@ -7449,7 +7580,7 @@ void
 set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame)
 {
   struct breakpoint *b, *b_tmp;
-  int thread = tp->num;
+  int thread = tp->global_num;
 
   /* To avoid having to rescan all objfile symbols at every step,
      we maintain a list of continually-inserted but always disabled
@@ -7518,7 +7649,7 @@ set_longjmp_breakpoint_for_call_dummy (void)
        new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy,
                                                  &momentary_breakpoint_ops,
                                                  1);
-       new_b->thread = pid_to_thread_id (inferior_ptid);
+       new_b->thread = ptid_to_global_thread_id (inferior_ptid);
 
        /* Link NEW_B into the chain of RETVAL breakpoints.  */
 
@@ -7548,7 +7679,7 @@ check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp)
   struct breakpoint *b, *b_tmp;
 
   ALL_BREAKPOINTS_SAFE (b, b_tmp)
-    if (b->type == bp_longjmp_call_dummy && b->thread == tp->num)
+    if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num)
       {
        struct breakpoint *dummy_b = b->related_breakpoint;
 
@@ -7634,26 +7765,14 @@ create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
                                  &internal_breakpoint_ops);
 
   b->enable_state = bp_enabled;
-  /* addr_string has to be used or breakpoint_re_set will delete me.  */
-  b->addr_string
-    = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
+  /* location has to be used or breakpoint_re_set will delete me.  */
+  b->location = new_address_location (b->loc->address);
 
   update_global_location_list_nothrow (UGLL_MAY_INSERT);
 
   return b;
 }
 
-void
-remove_thread_event_breakpoints (void)
-{
-  struct breakpoint *b, *b_tmp;
-
-  ALL_BREAKPOINTS_SAFE (b, b_tmp)
-    if (b->type == bp_thread_event
-       && b->loc->pspace == current_program_space)
-      delete_breakpoint (b);
-}
-
 struct lang_and_radix
   {
     enum language lang;
@@ -8780,7 +8899,7 @@ set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal,
      momentary breakpoints to be active in only a single thread of
      control.  */
   if (in_thread_list (inferior_ptid))
-    b->thread = pid_to_thread_id (inferior_ptid);
+    b->thread = ptid_to_global_thread_id (inferior_ptid);
 
   update_global_location_list_nothrow (UGLL_MAY_INSERT);
 
@@ -8947,7 +9066,7 @@ program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address)
   if (bpoint == NULL)
     return 0;
 
-  target_mem = alloca (len);
+  target_mem = (gdb_byte *) alloca (len);
 
   /* Enable the automatic memory restoration from breakpoints while
      we read the memory.  Otherwise we could say about our temporary
@@ -8974,6 +9093,13 @@ bp_loc_is_permanent (struct bp_location *loc)
 
   gdb_assert (loc != NULL);
 
+  /* If we have a catchpoint or a watchpoint, just return 0.  We should not
+     attempt to read from the addresses the locations of these breakpoint types
+     point to.  program_breakpoint_here_p, below, will attempt to read
+     memory.  */
+  if (!breakpoint_address_is_meaningful (loc->owner))
+    return 0;
+
   cleanup = save_current_space_and_thread ();
   switch_to_program_space_and_thread (loc->pspace);
 
@@ -9041,8 +9167,7 @@ update_dprintf_command_list (struct breakpoint *b)
   gdb_assert (printf_line != NULL);
   /* Manufacture a printf sequence.  */
   {
-    struct command_line *printf_cmd_line
-      = xmalloc (sizeof (struct command_line));
+    struct command_line *printf_cmd_line = XNEW (struct command_line);
 
     printf_cmd_line->control_type = simple_control;
     printf_cmd_line->body_count = 0;
@@ -9070,13 +9195,14 @@ update_dprintf_commands (char *args, int from_tty,
     }
 }
 
-/* Create a breakpoint with SAL as location.  Use ADDR_STRING
-   as textual description of the location, and COND_STRING
+/* Create a breakpoint with SAL as location.  Use LOCATION
+   as a description of the location, and COND_STRING
    as condition expression.  */
 
 static void
 init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
-                    struct symtabs_and_lines sals, char *addr_string,
+                    struct symtabs_and_lines sals,
+                    struct event_location *location,
                     char *filter, char *cond_string,
                     char *extra_string,
                     enum bptype type, enum bpdisp disposition,
@@ -9142,13 +9268,13 @@ init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
                {
                  /* We already know the marker exists, otherwise, we
                     wouldn't see a sal for it.  */
-                 char *p = &addr_string[3];
-                 char *endp;
+                 const char *p = &event_location_to_string (b->location)[3];
+                 const char *endp;
                  char *marker_str;
 
-                 p = skip_spaces (p);
+                 p = skip_spaces_const (p);
 
-                 endp = skip_to_space (p);
+                 endp = skip_to_space_const (p);
 
                  marker_str = savestring (p, endp - p);
                  t->static_trace_marker_id = marker_str;
@@ -9204,19 +9330,17 @@ init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
     }
 
   b->display_canonical = display_canonical;
-  if (addr_string)
-    b->addr_string = addr_string;
+  if (location != NULL)
+    b->location = location;
   else
-    /* addr_string has to be used or breakpoint_re_set will delete
-       me.  */
-    b->addr_string
-      = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
+    b->location = new_address_location (b->loc->address);
   b->filter = filter;
 }
 
 static void
 create_breakpoint_sal (struct gdbarch *gdbarch,
-                      struct symtabs_and_lines sals, char *addr_string,
+                      struct symtabs_and_lines sals,
+                      struct event_location *location,
                       char *filter, char *cond_string,
                       char *extra_string,
                       enum bptype type, enum bpdisp disposition,
@@ -9241,7 +9365,7 @@ create_breakpoint_sal (struct gdbarch *gdbarch,
   old_chain = make_cleanup (xfree, b);
 
   init_breakpoint_sal (b, gdbarch,
-                      sals, addr_string,
+                      sals, location,
                       filter, cond_string, extra_string,
                       type, disposition,
                       thread, task, ignore_count,
@@ -9285,17 +9409,17 @@ create_breakpoints_sal (struct gdbarch *gdbarch,
 
   for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i)
     {
-      /* Note that 'addr_string' can be NULL in the case of a plain
+      /* Note that 'location' can be NULL in the case of a plain
         'break', without arguments.  */
-      char *addr_string = (canonical->addr_string
-                          ? xstrdup (canonical->addr_string)
-                          : NULL);
+      struct event_location *location
+       = (canonical->location != NULL
+          ? copy_event_location (canonical->location) : NULL);
       char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL;
-      struct cleanup *inner = make_cleanup (xfree, addr_string);
+      struct cleanup *inner = make_cleanup_delete_event_location (location);
 
       make_cleanup (xfree, filter_string);
       create_breakpoint_sal (gdbarch, lsal->sals,
-                            addr_string,
+                            location,
                             filter_string,
                             cond_string, extra_string,
                             type, disposition,
@@ -9306,83 +9430,96 @@ create_breakpoints_sal (struct gdbarch *gdbarch,
     }
 }
 
-/* Parse ADDRESS which is assumed to be a SAL specification possibly
+/* Parse LOCATION which is assumed to be a SAL specification possibly
    followed by conditionals.  On return, SALS contains an array of SAL
-   addresses found.  ADDR_STRING contains a vector of (canonical)
-   address strings.  ADDRESS points to the end of the SAL.
+   addresses found.  LOCATION points to the end of the SAL (for
+   linespec locations).
 
    The array and the line spec strings are allocated on the heap, it is
    the caller's responsibility to free them.  */
 
 static void
-parse_breakpoint_sals (char **address,
+parse_breakpoint_sals (const struct event_location *location,
                       struct linespec_result *canonical)
 {
-  /* If no arg given, or if first arg is 'if ', use the default
-     breakpoint.  */
-  if ((*address) == NULL || linespec_lexer_lex_keyword (*address))
-    {
-      /* The last displayed codepoint, if it's valid, is our default breakpoint
-         address.  */
-      if (last_displayed_sal_is_valid ())
-       {
-         struct linespec_sals lsal;
-         struct symtab_and_line sal;
-         CORE_ADDR pc;
-
-         init_sal (&sal);              /* Initialize to zeroes.  */
-         lsal.sals.sals = (struct symtab_and_line *)
-           xmalloc (sizeof (struct symtab_and_line));
-
-         /* Set sal's pspace, pc, symtab, and line to the values
-            corresponding to the last call to print_frame_info.
-            Be sure to reinitialize LINE with NOTCURRENT == 0
-            as the breakpoint line number is inappropriate otherwise.
-            find_pc_line would adjust PC, re-set it back.  */
-         get_last_displayed_sal (&sal);
-         pc = sal.pc;
-         sal = find_pc_line (pc, 0);
-
-         /* "break" without arguments is equivalent to "break *PC"
-            where PC is the last displayed codepoint's address.  So
-            make sure to set sal.explicit_pc to prevent GDB from
-            trying to expand the list of sals to include all other
-            instances with the same symtab and line.  */
-         sal.pc = pc;
-         sal.explicit_pc = 1;
-
-         lsal.sals.sals[0] = sal;
-         lsal.sals.nelts = 1;
-         lsal.canonical = NULL;
-
-         VEC_safe_push (linespec_sals, canonical->sals, &lsal);
+  struct symtab_and_line cursal;
+
+  if (event_location_type (location) == LINESPEC_LOCATION)
+    {
+      const char *address = get_linespec_location (location);
+
+      if (address == NULL)
+       {
+         /* The last displayed codepoint, if it's valid, is our default
+            breakpoint address.  */
+         if (last_displayed_sal_is_valid ())
+           {
+             struct linespec_sals lsal;
+             struct symtab_and_line sal;
+             CORE_ADDR pc;
+
+             init_sal (&sal);          /* Initialize to zeroes.  */
+             lsal.sals.sals = XNEW (struct symtab_and_line);
+
+             /* Set sal's pspace, pc, symtab, and line to the values
+                corresponding to the last call to print_frame_info.
+                Be sure to reinitialize LINE with NOTCURRENT == 0
+                as the breakpoint line number is inappropriate otherwise.
+                find_pc_line would adjust PC, re-set it back.  */
+             get_last_displayed_sal (&sal);
+             pc = sal.pc;
+             sal = find_pc_line (pc, 0);
+
+             /* "break" without arguments is equivalent to "break *PC"
+                where PC is the last displayed codepoint's address.  So
+                make sure to set sal.explicit_pc to prevent GDB from
+                trying to expand the list of sals to include all other
+                instances with the same symtab and line.  */
+             sal.pc = pc;
+             sal.explicit_pc = 1;
+
+             lsal.sals.sals[0] = sal;
+             lsal.sals.nelts = 1;
+             lsal.canonical = NULL;
+
+             VEC_safe_push (linespec_sals, canonical->sals, &lsal);
+             return;
+           }
+         else
+           error (_("No default breakpoint address now."));
        }
-      else
-       error (_("No default breakpoint address now."));
     }
-  else
+
+  /* Force almost all breakpoints to be in terms of the
+     current_source_symtab (which is decode_line_1's default).
+     This should produce the results we want almost all of the
+     time while leaving default_breakpoint_* alone.
+
+     ObjC: However, don't match an Objective-C method name which
+     may have a '+' or '-' succeeded by a '['.  */
+  cursal = get_current_source_symtab_and_line ();
+  if (last_displayed_sal_is_valid ())
     {
-      struct symtab_and_line cursal = get_current_source_symtab_and_line ();
+      const char *address = NULL;
 
-      /* Force almost all breakpoints to be in terms of the
-         current_source_symtab (which is decode_line_1's default).
-         This should produce the results we want almost all of the
-         time while leaving default_breakpoint_* alone.
+      if (event_location_type (location) == LINESPEC_LOCATION)
+       address = get_linespec_location (location);
 
-        ObjC: However, don't match an Objective-C method name which
-        may have a '+' or '-' succeeded by a '['.  */
-      if (last_displayed_sal_is_valid ()
-         && (!cursal.symtab
-             || ((strchr ("+-", (*address)[0]) != NULL)
-                 && ((*address)[1] != '['))))
-       decode_line_full (address, DECODE_LINE_FUNFIRSTLINE,
-                         get_last_displayed_symtab (),
-                         get_last_displayed_line (),
-                         canonical, NULL, NULL);
-      else
-       decode_line_full (address, DECODE_LINE_FUNFIRSTLINE,
-                         cursal.symtab, cursal.line, canonical, NULL, NULL);
+      if (!cursal.symtab
+         || (address != NULL
+             && strchr ("+-", address[0]) != NULL
+             && address[1] != '['))
+       {
+         decode_line_full (location, DECODE_LINE_FUNFIRSTLINE,
+                           get_last_displayed_symtab (),
+                           get_last_displayed_line (),
+                           canonical, NULL, NULL);
+         return;
+       }
     }
+
+  decode_line_full (location, DECODE_LINE_FUNFIRSTLINE,
+                   cursal.symtab, cursal.line, canonical, NULL, NULL);
 }
 
 
@@ -9436,14 +9573,6 @@ check_fast_tracepoint_sals (struct gdbarch *gdbarch,
     }
 }
 
-/* Issue an invalid thread ID error.  */
-
-static void ATTRIBUTE_NORETURN
-invalid_thread_id_error (int id)
-{
-  error (_("Unknown thread %d."), id);
-}
-
 /* Given TOK, a string specification of condition and thread, as
    accepted by the 'break' command, extract the condition
    string and thread number and set *COND_STRING and *THREAD.
@@ -9492,14 +9621,14 @@ find_condition_and_thread (const char *tok, CORE_ADDR pc,
        }
       else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
        {
-         char *tmptok;
+         const char *tmptok;
+         struct thread_info *thr;
 
          tok = end_tok + 1;
-         *thread = strtol (tok, &tmptok, 0);
+         thr = parse_thread_id (tok, &tmptok);
          if (tok == tmptok)
            error (_("Junk after thread keyword."));
-         if (!valid_thread_id (*thread))
-           invalid_thread_id_error (*thread);
+         *thread = thr->global_num;
          tok = tmptok;
        }
       else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0)
@@ -9527,19 +9656,19 @@ find_condition_and_thread (const char *tok, CORE_ADDR pc,
 /* Decode a static tracepoint marker spec.  */
 
 static struct symtabs_and_lines
-decode_static_tracepoint_spec (char **arg_p)
+decode_static_tracepoint_spec (const char **arg_p)
 {
   VEC(static_tracepoint_marker_p) *markers = NULL;
   struct symtabs_and_lines sals;
   struct cleanup *old_chain;
-  char *p = &(*arg_p)[3];
-  char *endp;
+  const char *p = &(*arg_p)[3];
+  const char *endp;
   char *marker_str;
   int i;
 
-  p = skip_spaces (p);
+  p = skip_spaces_const (p);
 
-  endp = skip_to_space (p);
+  endp = skip_to_space_const (p);
 
   marker_str = savestring (p, endp - p);
   old_chain = make_cleanup (xfree, marker_str);
@@ -9549,7 +9678,7 @@ decode_static_tracepoint_spec (char **arg_p)
     error (_("No known static tracepoint marker named %s"), marker_str);
 
   sals.nelts = VEC_length(static_tracepoint_marker_p, markers);
-  sals.sals = xmalloc (sizeof *sals.sals * sals.nelts);
+  sals.sals = XNEWVEC (struct symtab_and_line, sals.nelts);
 
   for (i = 0; i < sals.nelts; i++)
     {
@@ -9571,22 +9700,13 @@ decode_static_tracepoint_spec (char **arg_p)
   return sals;
 }
 
-/* Set a breakpoint.  This function is shared between CLI and MI
-   functions for setting a breakpoint.  This function has two major
-   modes of operations, selected by the PARSE_ARG parameter.  If
-   non-zero, the function will parse ARG, extracting location,
-   condition, thread and extra string.  Otherwise, ARG is just the
-   breakpoint's location, with condition, thread, and extra string
-   specified by the COND_STRING, THREAD and EXTRA_STRING parameters.
-   If INTERNAL is non-zero, the breakpoint number will be allocated
-   from the internal breakpoint count.  Returns true if any breakpoint
-   was created; false otherwise.  */
+/* See breakpoint.h.  */
 
 int
 create_breakpoint (struct gdbarch *gdbarch,
-                  char *arg, char *cond_string,
+                  const struct event_location *location, char *cond_string,
                   int thread, char *extra_string,
-                  int parse_arg,
+                  int parse_extra,
                   int tempflag, enum bptype type_wanted,
                   int ignore_count,
                   enum auto_boolean pending_break_support,
@@ -9594,8 +9714,6 @@ create_breakpoint (struct gdbarch *gdbarch,
                   int from_tty, int enabled, int internal,
                   unsigned flags)
 {
-  char *copy_arg = NULL;
-  char *addr_start = arg;
   struct linespec_result canonical;
   struct cleanup *old_chain;
   struct cleanup *bkpt_chain = NULL;
@@ -9605,12 +9723,15 @@ create_breakpoint (struct gdbarch *gdbarch,
 
   gdb_assert (ops != NULL);
 
+  /* If extra_string isn't useful, set it to NULL.  */
+  if (extra_string != NULL && *extra_string == '\0')
+    extra_string = NULL;
+
   init_linespec_result (&canonical);
 
   TRY
     {
-      ops->create_sals_from_address (&arg, &canonical, type_wanted,
-                                    addr_start, &copy_arg);
+      ops->create_sals_from_location (location, &canonical, type_wanted);
     }
   CATCH (e, RETURN_MASK_ERROR)
     {
@@ -9637,24 +9758,14 @@ create_breakpoint (struct gdbarch *gdbarch,
             a pending breakpoint and selected yes, or pending
             breakpoint behavior is on and thus a pending breakpoint
             is defaulted on behalf of the user.  */
-         {
-           struct linespec_sals lsal;
-
-           copy_arg = xstrdup (addr_start);
-           lsal.canonical = xstrdup (copy_arg);
-           lsal.sals.nelts = 1;
-           lsal.sals.sals = XNEW (struct symtab_and_line);
-           init_sal (&lsal.sals.sals[0]);
-           pending = 1;
-           VEC_safe_push (linespec_sals, canonical.sals, &lsal);
-         }
+         pending = 1;
        }
       else
        throw_exception (e);
     }
   END_CATCH
 
-  if (VEC_empty (linespec_sals, canonical.sals))
+  if (!pending && VEC_empty (linespec_sals, canonical.sals))
     return 0;
 
   /* Create a chain of things that always need to be cleaned up.  */
@@ -9692,7 +9803,7 @@ create_breakpoint (struct gdbarch *gdbarch,
      breakpoint.  */
   if (!pending)
     {
-      if (parse_arg)
+      if (parse_extra)
         {
          char *rest;
          struct linespec_sals *lsal;
@@ -9704,19 +9815,22 @@ create_breakpoint (struct gdbarch *gdbarch,
             sal is OK.  When setting the breakpoint we'll
             re-parse it in context of each sal.  */
 
-         find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string,
-                                    &thread, &task, &rest);
+         find_condition_and_thread (extra_string, lsal->sals.sals[0].pc,
+                                    &cond_string, &thread, &task, &rest);
          if (cond_string)
            make_cleanup (xfree, cond_string);
          if (rest)
            make_cleanup (xfree, rest);
          if (rest)
            extra_string = rest;
+         else
+           extra_string = NULL;
         }
       else
         {
-         if (*arg != '\0')
-           error (_("Garbage '%s' at end of location"), arg);
+         if (type_wanted != bp_dprintf
+             && extra_string != NULL && *extra_string != '\0')
+               error (_("Garbage '%s' at end of location"), extra_string);
 
          /* Create a private copy of condition string.  */
          if (cond_string)
@@ -9742,8 +9856,6 @@ create_breakpoint (struct gdbarch *gdbarch,
     {
       struct breakpoint *b;
 
-      make_cleanup (xfree, copy_arg);
-
       if (is_tracepoint_type (type_wanted))
        {
          struct tracepoint *t;
@@ -9755,13 +9867,10 @@ create_breakpoint (struct gdbarch *gdbarch,
        b = XNEW (struct breakpoint);
 
       init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops);
+      b->location = copy_event_location (location);
 
-      b->addr_string = copy_arg;
-      if (parse_arg)
-       {
-         b->cond_string = NULL;
-         b->extra_string = NULL;
-       }
+      if (parse_extra)
+       b->cond_string = NULL;
       else
        {
          /* Create a private copy of condition string.  */
@@ -9770,16 +9879,17 @@ create_breakpoint (struct gdbarch *gdbarch,
              cond_string = xstrdup (cond_string);
              make_cleanup (xfree, cond_string);
            }
-         /* Create a private copy of any extra string.  */
-         if (extra_string != NULL)
-           {
-             extra_string = xstrdup (extra_string);
-             make_cleanup (xfree, extra_string);
-           }
          b->cond_string = cond_string;
-         b->extra_string = extra_string;
          b->thread = thread;
        }
+
+      /* Create a private copy of any extra string.  */
+      if (extra_string != NULL)
+       {
+         extra_string = xstrdup (extra_string);
+         make_cleanup (xfree, extra_string);
+       }
+      b->extra_string = extra_string;
       b->ignore_count = ignore_count;
       b->disposition = tempflag ? disp_del : disp_donttouch;
       b->condition_not_parsed = 1;
@@ -9825,17 +9935,22 @@ break_command_1 (char *arg, int flag, int from_tty)
                             ? bp_hardware_breakpoint
                             : bp_breakpoint);
   struct breakpoint_ops *ops;
-  const char *arg_cp = arg;
+  struct event_location *location;
+  struct cleanup *cleanup;
+
+  location = string_to_event_location (&arg, current_language);
+  cleanup = make_cleanup_delete_event_location (location);
 
   /* Matching breakpoints on probes.  */
-  if (arg && probe_linespec_to_ops (&arg_cp) != NULL)
+  if (location != NULL
+      && event_location_type (location) == PROBE_LOCATION)
     ops = &bkpt_probe_breakpoint_ops;
   else
     ops = &bkpt_breakpoint_ops;
 
   create_breakpoint (get_current_arch (),
-                    arg,
-                    NULL, 0, NULL, 1 /* parse arg */,
+                    location,
+                    NULL, 0, arg, 1 /* parse arg */,
                     tempflag, type_wanted,
                     0 /* Ignore count */,
                     pending_break_support,
@@ -9844,6 +9959,7 @@ break_command_1 (char *arg, int flag, int from_tty)
                     1 /* enabled */,
                     0 /* internal */,
                     0);
+  do_cleanups (cleanup);
 }
 
 /* Helper function for break_command_1 and disassemble_command.  */
@@ -10010,9 +10126,28 @@ stopat_command (char *arg, int from_tty)
 static void
 dprintf_command (char *arg, int from_tty)
 {
+  struct event_location *location;
+  struct cleanup *cleanup;
+
+  location = string_to_event_location (&arg, current_language);
+  cleanup = make_cleanup_delete_event_location (location);
+
+  /* If non-NULL, ARG should have been advanced past the location;
+     the next character must be ','.  */
+  if (arg != NULL)
+    {
+      if (arg[0] != ',' || arg[1] == '\0')
+       error (_("Format string required"));
+      else
+       {
+         /* Skip the comma.  */
+         ++arg;
+       }
+    }
+
   create_breakpoint (get_current_arch (),
-                    arg,
-                    NULL, 0, NULL, 1 /* parse arg */,
+                    location,
+                    NULL, 0, arg, 1 /* parse arg */,
                     0, bp_dprintf,
                     0 /* Ignore count */,
                     pending_break_support,
@@ -10021,6 +10156,7 @@ dprintf_command (char *arg, int from_tty)
                     1 /* enabled */,
                     0 /* internal */,
                     0);
+  do_cleanups (cleanup);
 }
 
 static void
@@ -10165,8 +10301,9 @@ print_mention_ranged_breakpoint (struct breakpoint *b)
 static void
 print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp)
 {
-  fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string,
-                     b->addr_string_range_end);
+  fprintf_unfiltered (fp, "break-range %s, %s",
+                     event_location_to_string (b->location),
+                     event_location_to_string (b->location_range_end));
   print_recreate_thread (b, fp);
 }
 
@@ -10217,6 +10354,7 @@ break_range_command (char *arg, int from_tty)
   struct symtab_and_line sal_start, sal_end;
   struct cleanup *cleanup_bkpt;
   struct linespec_sals *lsal_start, *lsal_end;
+  struct event_location *start_location, *end_location;
 
   /* We don't support software ranged breakpoints.  */
   if (target_ranged_break_num_registers () < 0)
@@ -10236,9 +10374,10 @@ break_range_command (char *arg, int from_tty)
   init_linespec_result (&canonical_start);
 
   arg_start = arg;
-  parse_breakpoint_sals (&arg, &canonical_start);
-
-  cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start);
+  start_location = string_to_event_location (&arg, current_language);
+  cleanup_bkpt = make_cleanup_delete_event_location (start_location);
+  parse_breakpoint_sals (start_location, &canonical_start);
+  make_cleanup_destroy_linespec_result (&canonical_start);
 
   if (arg[0] != ',')
     error (_("Too few arguments."));
@@ -10268,7 +10407,9 @@ break_range_command (char *arg, int from_tty)
      symtab and line as the default symtab and line for the end of the
      range.  This makes it possible to have ranges like "foo.c:27, +14",
      where +14 means 14 lines from the start location.  */
-  decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE,
+  end_location = string_to_event_location (&arg, current_language);
+  make_cleanup_delete_event_location (end_location);
+  decode_line_full (end_location, DECODE_LINE_FUNFIRSTLINE,
                    sal_start.symtab, sal_start.line,
                    &canonical_end, NULL, NULL);
 
@@ -10283,8 +10424,6 @@ break_range_command (char *arg, int from_tty)
     error (_("Cannot create a ranged breakpoint with multiple locations."));
 
   sal_end = lsal_end->sals.sals[0];
-  addr_string_end = savestring (arg_start, arg - arg_start);
-  make_cleanup (xfree, addr_string_end);
 
   end = find_breakpoint_range_end (sal_end);
   if (sal_start.pc > end)
@@ -10311,8 +10450,8 @@ break_range_command (char *arg, int from_tty)
   set_breakpoint_count (breakpoint_count + 1);
   b->number = breakpoint_count;
   b->disposition = disp_donttouch;
-  b->addr_string = xstrdup (addr_string_start);
-  b->addr_string_range_end = xstrdup (addr_string_end);
+  b->location = copy_event_location (start_location);
+  b->location_range_end = copy_event_location (end_location);
   b->loc->length = length;
 
   do_cleanups (cleanup_bkpt);
@@ -10994,25 +11133,23 @@ watch_command_1 (const char *arg, int accessflag, int from_tty,
 
          if (toklen == 6 && startswith (tok, "thread"))
            {
+             struct thread_info *thr;
              /* At this point we've found a "thread" token, which means
                 the user is trying to set a watchpoint that triggers
                 only in a specific thread.  */
-             char *endp;
+             const char *endp;
 
              if (thread != -1)
                error(_("You can specify only one thread."));
 
              /* Extract the thread ID from the next token.  */
-             thread = strtol (value_start, &endp, 0);
+             thr = parse_thread_id (value_start, &endp);
 
-             /* Check if the user provided a valid numeric value for the
-                thread ID.  */
+             /* Check if the user provided a valid thread ID.  */
              if (*endp != ' ' && *endp != '\t' && *endp != '\0')
-               error (_("Invalid thread ID specification %s."), value_start);
+               invalid_thread_id_error (value_start);
 
-             /* Check if the thread actually exists.  */
-             if (!valid_thread_id (thread))
-               invalid_thread_id_error (thread);
+             thread = thr->global_num;
            }
          else if (toklen == 4 && startswith (tok, "mask"))
            {
@@ -11403,29 +11540,109 @@ awatch_command (char *arg, int from_tty)
 }
 \f
 
-/* Helper routines for the until_command routine in infcmd.c.  Here
-   because it uses the mechanisms of breakpoints.  */
+/* Data for the FSM that manages the until(location)/advance commands
+   in infcmd.c.  Here because it uses the mechanisms of
+   breakpoints.  */
+
+struct until_break_fsm
+{
+  /* The base class.  */
+  struct thread_fsm thread_fsm;
+
+  /* The thread that as current when the command was executed.  */
+  int thread;
+
+  /* The breakpoint set at the destination location.  */
+  struct breakpoint *location_breakpoint;
+
+  /* Breakpoint set at the return address in the caller frame.  May be
+     NULL.  */
+  struct breakpoint *caller_breakpoint;
+};
 
-struct until_break_command_continuation_args
+static void until_break_fsm_clean_up (struct thread_fsm *self);
+static int until_break_fsm_should_stop (struct thread_fsm *self);
+static enum async_reply_reason
+  until_break_fsm_async_reply_reason (struct thread_fsm *self);
+
+/* until_break_fsm's vtable.  */
+
+static struct thread_fsm_ops until_break_fsm_ops =
 {
-  struct breakpoint *breakpoint;
-  struct breakpoint *breakpoint2;
-  int thread_num;
+  NULL, /* dtor */
+  until_break_fsm_clean_up,
+  until_break_fsm_should_stop,
+  NULL, /* return_value */
+  until_break_fsm_async_reply_reason,
 };
 
-/* This function is called by fetch_inferior_event via the
-   cmd_continuation pointer, to complete the until command.  It takes
-   care of cleaning up the temporary breakpoints set up by the until
-   command.  */
+/* Allocate a new until_break_command_fsm.  */
+
+static struct until_break_fsm *
+new_until_break_fsm (int thread,
+                    struct breakpoint *location_breakpoint,
+                    struct breakpoint *caller_breakpoint)
+{
+  struct until_break_fsm *sm;
+
+  sm = XCNEW (struct until_break_fsm);
+  thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops);
+
+  sm->thread = thread;
+  sm->location_breakpoint = location_breakpoint;
+  sm->caller_breakpoint = caller_breakpoint;
+
+  return sm;
+}
+
+/* Implementation of the 'should_stop' FSM method for the
+   until(location)/advance commands.  */
+
+static int
+until_break_fsm_should_stop (struct thread_fsm *self)
+{
+  struct until_break_fsm *sm = (struct until_break_fsm *) self;
+  struct thread_info *tp = inferior_thread ();
+
+  if (bpstat_find_breakpoint (tp->control.stop_bpstat,
+                             sm->location_breakpoint) != NULL
+      || (sm->caller_breakpoint != NULL
+         && bpstat_find_breakpoint (tp->control.stop_bpstat,
+                                    sm->caller_breakpoint) != NULL))
+    thread_fsm_set_finished (self);
+
+  return 1;
+}
+
+/* Implementation of the 'clean_up' FSM method for the
+   until(location)/advance commands.  */
+
 static void
-until_break_command_continuation (void *arg, int err)
+until_break_fsm_clean_up (struct thread_fsm *self)
 {
-  struct until_break_command_continuation_args *a = arg;
+  struct until_break_fsm *sm = (struct until_break_fsm *) self;
 
-  delete_breakpoint (a->breakpoint);
-  if (a->breakpoint2)
-    delete_breakpoint (a->breakpoint2);
-  delete_longjmp_breakpoint (a->thread_num);
+  /* Clean up our temporary breakpoints.  */
+  if (sm->location_breakpoint != NULL)
+    {
+      delete_breakpoint (sm->location_breakpoint);
+      sm->location_breakpoint = NULL;
+    }
+  if (sm->caller_breakpoint != NULL)
+    {
+      delete_breakpoint (sm->caller_breakpoint);
+      sm->caller_breakpoint = NULL;
+    }
+  delete_longjmp_breakpoint (sm->thread);
+}
+
+/* Implementation of the 'async_reply_reason' FSM method for the
+   until(location)/advance commands.  */
+
+static enum async_reply_reason
+until_break_fsm_async_reply_reason (struct thread_fsm *self)
+{
+  return EXEC_ASYNC_LOCATION_REACHED;
 }
 
 void
@@ -11437,23 +11654,28 @@ until_break_command (char *arg, int from_tty, int anywhere)
   struct gdbarch *frame_gdbarch;
   struct frame_id stack_frame_id;
   struct frame_id caller_frame_id;
-  struct breakpoint *breakpoint;
-  struct breakpoint *breakpoint2 = NULL;
-  struct cleanup *old_chain;
+  struct breakpoint *location_breakpoint;
+  struct breakpoint *caller_breakpoint = NULL;
+  struct cleanup *old_chain, *cleanup;
   int thread;
   struct thread_info *tp;
+  struct event_location *location;
+  struct until_break_fsm *sm;
 
   clear_proceed_status (0);
 
   /* Set a breakpoint where the user wants it and at return from
      this function.  */
 
+  location = string_to_event_location (&arg, current_language);
+  cleanup = make_cleanup_delete_event_location (location);
+
   if (last_displayed_sal_is_valid ())
-    sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE,
+    sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE,
                          get_last_displayed_symtab (),
                          get_last_displayed_line ());
   else
-    sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE,
+    sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE,
                          (struct symtab *) NULL, 0);
 
   if (sals.nelts != 1)
@@ -11468,7 +11690,7 @@ until_break_command (char *arg, int from_tty, int anywhere)
   resolve_sal_pc (&sal);
 
   tp = inferior_thread ();
-  thread = tp->num;
+  thread = tp->global_num;
 
   old_chain = make_cleanup (null_cleanup, NULL);
 
@@ -11488,14 +11710,16 @@ until_break_command (char *arg, int from_tty, int anywhere)
   if (frame_id_p (caller_frame_id))
     {
       struct symtab_and_line sal2;
+      struct gdbarch *caller_gdbarch;
 
       sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0);
       sal2.pc = frame_unwind_caller_pc (frame);
-      breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame),
-                                             sal2,
-                                             caller_frame_id,
-                                             bp_until);
-      make_cleanup_delete_breakpoint (breakpoint2);
+      caller_gdbarch = frame_unwind_caller_arch (frame);
+      caller_breakpoint = set_momentary_breakpoint (caller_gdbarch,
+                                                   sal2,
+                                                   caller_frame_id,
+                                                   bp_until);
+      make_cleanup_delete_breakpoint (caller_breakpoint);
 
       set_longjmp_breakpoint (tp, caller_frame_id);
       make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
@@ -11507,38 +11731,24 @@ until_break_command (char *arg, int from_tty, int anywhere)
   if (anywhere)
     /* If the user told us to continue until a specified location,
        we don't specify a frame at which we need to stop.  */
-    breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
-                                          null_frame_id, bp_until);
+    location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
+                                                   null_frame_id, bp_until);
   else
     /* Otherwise, specify the selected frame, because we want to stop
        only at the very same frame.  */
-    breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
-                                          stack_frame_id, bp_until);
-  make_cleanup_delete_breakpoint (breakpoint);
-
-  proceed (-1, GDB_SIGNAL_DEFAULT);
+    location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
+                                                   stack_frame_id, bp_until);
+  make_cleanup_delete_breakpoint (location_breakpoint);
 
-  /* If we are running asynchronously, and proceed call above has
-     actually managed to start the target, arrange for breakpoints to
-     be deleted when the target stops.  Otherwise, we're already
-     stopped and delete breakpoints via cleanup chain.  */
+  sm = new_until_break_fsm (tp->global_num,
+                           location_breakpoint, caller_breakpoint);
+  tp->thread_fsm = &sm->thread_fsm;
 
-  if (target_can_async_p () && is_running (inferior_ptid))
-    {
-      struct until_break_command_continuation_args *args;
-      args = xmalloc (sizeof (*args));
+  discard_cleanups (old_chain);
 
-      args->breakpoint = breakpoint;
-      args->breakpoint2 = breakpoint2;
-      args->thread_num = thread;
+  proceed (-1, GDB_SIGNAL_DEFAULT);
 
-      discard_cleanups (old_chain);
-      add_continuation (inferior_thread (),
-                       until_break_command_continuation, args,
-                       xfree);
-    }
-  else
-    do_cleanups (old_chain);
+  do_cleanups (cleanup);
 }
 
 /* This function attempts to parse an optional "if <cond>" clause
@@ -11694,7 +11904,8 @@ init_ada_exception_breakpoint (struct breakpoint *b,
 
   b->enable_state = enabled ? bp_enabled : bp_disabled;
   b->disposition = tempflag ? disp_del : disp_donttouch;
-  b->addr_string = addr_string;
+  b->location = string_to_event_location (&addr_string,
+                                         language_def (language_ada));
   b->language = language_ada;
 }
 
@@ -11716,9 +11927,9 @@ tcatch_command (char *arg, int from_tty)
 static int
 compare_breakpoints (const void *a, const void *b)
 {
-  const breakpoint_p *ba = a;
+  const breakpoint_p *ba = (const breakpoint_p *) a;
   uintptr_t ua = (uintptr_t) *ba;
-  const breakpoint_p *bb = b;
+  const breakpoint_p *bb = (const breakpoint_p *) b;
   uintptr_t ub = (uintptr_t) *bb;
 
   if ((*ba)->number < (*bb)->number)
@@ -11757,8 +11968,7 @@ clear_command (char *arg, int from_tty)
     }
   else
     {
-      sals.sals = (struct symtab_and_line *)
-       xmalloc (sizeof (struct symtab_and_line));
+      sals.sals = XNEW (struct symtab_and_line);
       make_cleanup (xfree, sals.sals);
       init_sal (&sal);         /* Initialize to zeroes.  */
 
@@ -11939,8 +12149,8 @@ breakpoint_auto_delete (bpstat bs)
 static int
 bp_location_compare (const void *ap, const void *bp)
 {
-  struct bp_location *a = *(void **) ap;
-  struct bp_location *b = *(void **) bp;
+  const struct bp_location *a = *(const struct bp_location **) ap;
+  const struct bp_location *b = *(const struct bp_location **) bp;
 
   if (a->address != b->address)
     return (a->address > b->address) - (a->address < b->address);
@@ -12011,9 +12221,7 @@ download_tracepoint_locations (void)
 {
   struct breakpoint *b;
   struct cleanup *old_chain;
-
-  if (!target_can_download_tracepoint ())
-    return;
+  enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN;
 
   old_chain = save_current_space_and_thread ();
 
@@ -12028,6 +12236,17 @@ download_tracepoint_locations (void)
           : !may_insert_tracepoints))
        continue;
 
+      if (can_download_tracepoint == TRIBOOL_UNKNOWN)
+       {
+         if (target_can_download_tracepoint ())
+           can_download_tracepoint = TRIBOOL_TRUE;
+         else
+           can_download_tracepoint = TRIBOOL_FALSE;
+       }
+
+      if (can_download_tracepoint == TRIBOOL_FALSE)
+       break;
+
       for (bl = b->loc; bl; bl = bl->next)
        {
          /* In tracepoint, locations are _never_ duplicated, so
@@ -12175,7 +12394,7 @@ update_global_location_list (enum ugll_insert_mode insert_mode)
     for (loc = b->loc; loc; loc = loc->next)
       bp_location_count++;
 
-  bp_location = xmalloc (sizeof (*bp_location) * bp_location_count);
+  bp_location = XNEWVEC (struct bp_location *, bp_location_count);
   locp = bp_location;
   ALL_BREAKPOINTS (b)
     for (loc = b->loc; loc; loc = loc->next)
@@ -12532,7 +12751,7 @@ bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt)
 static int
 bpstat_remove_breakpoint_callback (struct thread_info *th, void *data)
 {
-  struct breakpoint *bpt = data;
+  struct breakpoint *bpt = (struct breakpoint *) data;
 
   bpstat_remove_bp_location (th->control.stop_bpstat, bpt);
   return 0;
@@ -12552,7 +12771,26 @@ say_where (struct breakpoint *b)
      single string.  */
   if (b->loc == NULL)
     {
-      printf_filtered (_(" (%s) pending."), b->addr_string);
+      /* For pending locations, the output differs slightly based
+        on b->extra_string.  If this is non-NULL, it contains either
+        a condition or dprintf arguments.  */
+      if (b->extra_string == NULL)
+       {
+         printf_filtered (_(" (%s) pending."),
+                          event_location_to_string (b->location));
+       }
+      else if (b->type == bp_dprintf)
+       {
+         printf_filtered (_(" (%s,%s) pending."),
+                          event_location_to_string (b->location),
+                          b->extra_string);
+       }
+      else
+       {
+         printf_filtered (_(" (%s %s) pending."),
+                          event_location_to_string (b->location),
+                          b->extra_string);
+       }
     }
   else
     {
@@ -12574,7 +12812,8 @@ say_where (struct breakpoint *b)
            /* This is not ideal, but each location may have a
               different file name, and this at least reflects the
               real situation somewhat.  */
-           printf_filtered (": %s.", b->addr_string);
+           printf_filtered (": %s.",
+                            event_location_to_string (b->location));
        }
 
       if (b->loc->next)
@@ -12616,9 +12855,9 @@ base_breakpoint_dtor (struct breakpoint *self)
   decref_counted_command_line (&self->commands);
   xfree (self->cond_string);
   xfree (self->extra_string);
-  xfree (self->addr_string);
   xfree (self->filter);
-  xfree (self->addr_string_range_end);
+  delete_event_location (self->location);
+  delete_event_location (self->location_range_end);
 }
 
 static struct bp_location *
@@ -12711,11 +12950,10 @@ base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp)
 }
 
 static void
-base_breakpoint_create_sals_from_address (char **arg,
-                                         struct linespec_result *canonical,
-                                         enum bptype type_wanted,
-                                         char *addr_start,
-                                         char **copy_arg)
+base_breakpoint_create_sals_from_location
+  (const struct event_location *location,
+   struct linespec_result *canonical,
+   enum bptype type_wanted)
 {
   internal_error_pure_virtual_called ();
 }
@@ -12737,7 +12975,8 @@ base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch,
 }
 
 static void
-base_breakpoint_decode_linespec (struct breakpoint *b, char **s,
+base_breakpoint_decode_location (struct breakpoint *b,
+                                const struct event_location *location,
                                 struct symtabs_and_lines *sals)
 {
   internal_error_pure_virtual_called ();
@@ -12775,9 +13014,9 @@ struct breakpoint_ops base_breakpoint_ops =
   base_breakpoint_print_one_detail,
   base_breakpoint_print_mention,
   base_breakpoint_print_recreate,
-  base_breakpoint_create_sals_from_address,
+  base_breakpoint_create_sals_from_location,
   base_breakpoint_create_breakpoints_sal,
-  base_breakpoint_decode_linespec,
+  base_breakpoint_decode_location,
   base_breakpoint_explains_signal,
   base_breakpoint_after_condition_true,
 };
@@ -12788,9 +13027,9 @@ static void
 bkpt_re_set (struct breakpoint *b)
 {
   /* FIXME: is this still reachable?  */
-  if (b->addr_string == NULL)
+  if (event_location_empty_p (b->location))
     {
-      /* Anything without a string can't be re-set.  */
+      /* Anything without a location can't be re-set.  */
       delete_breakpoint (b);
       return;
     }
@@ -12942,18 +13181,23 @@ bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp)
     internal_error (__FILE__, __LINE__,
                    _("unhandled breakpoint type %d"), (int) tp->type);
 
-  fprintf_unfiltered (fp, " %s", tp->addr_string);
+  fprintf_unfiltered (fp, " %s",
+                     event_location_to_string (tp->location));
+
+  /* Print out extra_string if this breakpoint is pending.  It might
+     contain, for example, conditions that were set by the user.  */
+  if (tp->loc == NULL && tp->extra_string != NULL)
+    fprintf_unfiltered (fp, " %s", tp->extra_string);
+
   print_recreate_thread (tp, fp);
 }
 
 static void
-bkpt_create_sals_from_address (char **arg,
-                              struct linespec_result *canonical,
-                              enum bptype type_wanted,
-                              char *addr_start, char **copy_arg)
+bkpt_create_sals_from_location (const struct event_location *location,
+                               struct linespec_result *canonical,
+                               enum bptype type_wanted)
 {
-  create_sals_from_address_default (arg, canonical, type_wanted,
-                                   addr_start, copy_arg);
+  create_sals_from_location_default (location, canonical, type_wanted);
 }
 
 static void
@@ -12978,10 +13222,11 @@ bkpt_create_breakpoints_sal (struct gdbarch *gdbarch,
 }
 
 static void
-bkpt_decode_linespec (struct breakpoint *b, char **s,
+bkpt_decode_location (struct breakpoint *b,
+                     const struct event_location *location,
                      struct symtabs_and_lines *sals)
 {
-  decode_linespec_default (b, s, sals);
+  decode_location_default (b, location, sals);
 }
 
 /* Virtual table for internal breakpoints.  */
@@ -13101,28 +13346,6 @@ momentary_bkpt_check_status (bpstat bs)
 static enum print_stop_action
 momentary_bkpt_print_it (bpstat bs)
 {
-  struct ui_out *uiout = current_uiout;
-
-  if (ui_out_is_mi_like_p (uiout))
-    {
-      struct breakpoint *b = bs->breakpoint_at;
-
-      switch (b->type)
-       {
-       case bp_finish:
-         ui_out_field_string
-           (uiout, "reason",
-            async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED));
-         break;
-
-       case bp_until:
-         ui_out_field_string
-           (uiout, "reason",
-            async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED));
-         break;
-       }
-    }
-
   return PRINT_UNKNOWN;
 }
 
@@ -13140,7 +13363,7 @@ momentary_bkpt_print_mention (struct breakpoint *b)
 static void
 longjmp_bkpt_dtor (struct breakpoint *self)
 {
-  struct thread_info *tp = find_thread_id (self->thread);
+  struct thread_info *tp = find_thread_global_id (self->thread);
 
   if (tp)
     tp->initiating_frame = null_frame_id;
@@ -13181,26 +13404,23 @@ bkpt_probe_remove_location (struct bp_location *bl)
 }
 
 static void
-bkpt_probe_create_sals_from_address (char **arg,
-                                    struct linespec_result *canonical,
-                                    enum bptype type_wanted,
-                                    char *addr_start, char **copy_arg)
+bkpt_probe_create_sals_from_location (const struct event_location *location,
+                                     struct linespec_result *canonical,
+                                     enum bptype type_wanted)
 {
   struct linespec_sals lsal;
 
-  lsal.sals = parse_probes (arg, canonical);
-
-  *copy_arg = xstrdup (canonical->addr_string);
-  lsal.canonical = xstrdup (*copy_arg);
-
+  lsal.sals = parse_probes (location, canonical);
+  lsal.canonical = xstrdup (event_location_to_string (canonical->location));
   VEC_safe_push (linespec_sals, canonical->sals, &lsal);
 }
 
 static void
-bkpt_probe_decode_linespec (struct breakpoint *b, char **s,
+bkpt_probe_decode_location (struct breakpoint *b,
+                           const struct event_location *location,
                            struct symtabs_and_lines *sals)
 {
-  *sals = parse_probes (s, NULL);
+  *sals = parse_probes (location, NULL);
   if (!sals->sals)
     error (_("probe not found"));
 }
@@ -13274,7 +13494,7 @@ tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp)
 
   if (self->type == bp_fast_tracepoint)
     fprintf_unfiltered (fp, "ftrace");
-  if (self->type == bp_static_tracepoint)
+  else if (self->type == bp_static_tracepoint)
     fprintf_unfiltered (fp, "strace");
   else if (self->type == bp_tracepoint)
     fprintf_unfiltered (fp, "trace");
@@ -13282,7 +13502,8 @@ tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp)
     internal_error (__FILE__, __LINE__,
                    _("unhandled tracepoint type %d"), (int) self->type);
 
-  fprintf_unfiltered (fp, " %s", self->addr_string);
+  fprintf_unfiltered (fp, " %s",
+                     event_location_to_string (self->location));
   print_recreate_thread (self, fp);
 
   if (tp->pass_count)
@@ -13290,13 +13511,11 @@ tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp)
 }
 
 static void
-tracepoint_create_sals_from_address (char **arg,
-                                    struct linespec_result *canonical,
-                                    enum bptype type_wanted,
-                                    char *addr_start, char **copy_arg)
+tracepoint_create_sals_from_location (const struct event_location *location,
+                                     struct linespec_result *canonical,
+                                     enum bptype type_wanted)
 {
-  create_sals_from_address_default (arg, canonical, type_wanted,
-                                   addr_start, copy_arg);
+  create_sals_from_location_default (location, canonical, type_wanted);
 }
 
 static void
@@ -13321,10 +13540,11 @@ tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch,
 }
 
 static void
-tracepoint_decode_linespec (struct breakpoint *b, char **s,
+tracepoint_decode_location (struct breakpoint *b,
+                           const struct event_location *location,
                            struct symtabs_and_lines *sals)
 {
-  decode_linespec_default (b, s, sals);
+  decode_location_default (b, location, sals);
 }
 
 struct breakpoint_ops tracepoint_breakpoint_ops;
@@ -13333,22 +13553,22 @@ struct breakpoint_ops tracepoint_breakpoint_ops;
    static probe.  */
 
 static void
-tracepoint_probe_create_sals_from_address (char **arg,
-                                          struct linespec_result *canonical,
-                                          enum bptype type_wanted,
-                                          char *addr_start, char **copy_arg)
+tracepoint_probe_create_sals_from_location
+  (const struct event_location *location,
+   struct linespec_result *canonical,
+   enum bptype type_wanted)
 {
   /* We use the same method for breakpoint on probes.  */
-  bkpt_probe_create_sals_from_address (arg, canonical, type_wanted,
-                                      addr_start, copy_arg);
+  bkpt_probe_create_sals_from_location (location, canonical, type_wanted);
 }
 
 static void
-tracepoint_probe_decode_linespec (struct breakpoint *b, char **s,
+tracepoint_probe_decode_location (struct breakpoint *b,
+                                 const struct event_location *location,
                                  struct symtabs_and_lines *sals)
 {
   /* We use the same method for breakpoint on probes.  */
-  bkpt_probe_decode_linespec (b, s, sals);
+  bkpt_probe_decode_location (b, location, sals);
 }
 
 static struct breakpoint_ops tracepoint_probe_breakpoint_ops;
@@ -13360,13 +13580,8 @@ dprintf_re_set (struct breakpoint *b)
 {
   breakpoint_re_set_default (b);
 
-  /* This breakpoint could have been pending, and be resolved now, and
-     if so, we should now have the extra string.  If we don't, the
-     dprintf was malformed when created, but we couldn't tell because
-     we can't extract the extra string until the location is
-     resolved.  */
-  if (b->loc != NULL && b->extra_string == NULL)
-    error (_("Format string required"));
+  /* extra_string should never be non-NULL for dprintf.  */
+  gdb_assert (b->extra_string != NULL);
 
   /* 1 - connect to target 1, that can run breakpoint commands.
      2 - create a dprintf, which resolves fine.
@@ -13387,7 +13602,8 @@ dprintf_re_set (struct breakpoint *b)
 static void
 dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp)
 {
-  fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string,
+  fprintf_unfiltered (fp, "dprintf %s,%s",
+                     event_location_to_string (tp->location),
                      tp->extra_string);
   print_recreate_thread (tp, fp);
 }
@@ -13434,19 +13650,24 @@ dprintf_after_condition_true (struct bpstats *bs)
    markers (`-m').  */
 
 static void
-strace_marker_create_sals_from_address (char **arg,
-                                       struct linespec_result *canonical,
-                                       enum bptype type_wanted,
-                                       char *addr_start, char **copy_arg)
+strace_marker_create_sals_from_location (const struct event_location *location,
+                                        struct linespec_result *canonical,
+                                        enum bptype type_wanted)
 {
   struct linespec_sals lsal;
+  const char *arg_start, *arg;
+  char *str;
+  struct cleanup *cleanup;
 
-  lsal.sals = decode_static_tracepoint_spec (arg);
+  arg = arg_start = get_linespec_location (location);
+  lsal.sals = decode_static_tracepoint_spec (&arg);
 
-  *copy_arg = savestring (addr_start, *arg - addr_start);
+  str = savestring (arg_start, arg - arg_start);
+  cleanup = make_cleanup (xfree, str);
+  canonical->location = new_linespec_location (&str);
+  do_cleanups (cleanup);
 
-  canonical->addr_string = xstrdup (*copy_arg);
-  lsal.canonical = xstrdup (*copy_arg);
+  lsal.canonical = xstrdup (event_location_to_string (canonical->location));
   VEC_safe_push (linespec_sals, canonical->sals, &lsal);
 }
 
@@ -13479,17 +13700,17 @@ strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch,
       struct symtabs_and_lines expanded;
       struct tracepoint *tp;
       struct cleanup *old_chain;
-      char *addr_string;
+      struct event_location *location;
 
       expanded.nelts = 1;
       expanded.sals = &lsal->sals.sals[i];
 
-      addr_string = xstrdup (canonical->addr_string);
-      old_chain = make_cleanup (xfree, addr_string);
+      location = copy_event_location (canonical->location);
+      old_chain = make_cleanup_delete_event_location (location);
 
       tp = XCNEW (struct tracepoint);
       init_breakpoint_sal (&tp->base, gdbarch, expanded,
-                          addr_string, NULL,
+                          location, NULL,
                           cond_string, extra_string,
                           type_wanted, disposition,
                           thread, task, ignore_count, ops,
@@ -13510,12 +13731,14 @@ strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch,
 }
 
 static void
-strace_marker_decode_linespec (struct breakpoint *b, char **s,
+strace_marker_decode_location (struct breakpoint *b,
+                              const struct event_location *location,
                               struct symtabs_and_lines *sals)
 {
   struct tracepoint *tp = (struct tracepoint *) b;
+  const char *s = get_linespec_location (location);
 
-  *sals = decode_static_tracepoint_spec (s);
+  *sals = decode_static_tracepoint_spec (&s);
   if (sals->nelts > tp->static_trace_marker_id_idx)
     {
       sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx];
@@ -13632,7 +13855,7 @@ delete_breakpoint (struct breakpoint *bpt)
 static void
 do_delete_breakpoint_cleanup (void *b)
 {
-  delete_breakpoint (b);
+  delete_breakpoint ((struct breakpoint *) b);
 }
 
 struct cleanup *
@@ -13851,6 +14074,7 @@ update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal)
          struct symbol *sym;
          struct static_tracepoint_marker *tpmarker;
          struct ui_out *uiout = current_uiout;
+         struct explicit_location explicit_loc;
 
          tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0);
 
@@ -13891,10 +14115,13 @@ update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal)
          b->loc->line_number = sal2.line;
          b->loc->symtab = sym != NULL ? sal2.symtab : NULL;
 
-         xfree (b->addr_string);
-         b->addr_string = xstrprintf ("%s:%d",
-                                  symtab_to_filename_for_display (sal2.symtab),
-                                      b->loc->line_number);
+         delete_event_location (b->location);
+         initialize_explicit_location (&explicit_loc);
+         explicit_loc.source_filename
+           = ASTRDUP (symtab_to_filename_for_display (sal2.symtab));
+         explicit_loc.line_offset.offset = b->loc->line_number;
+         explicit_loc.line_offset.sign = LINE_OFFSET_NONE;
+         b->location = new_explicit_location (&explicit_loc);
 
          /* Might be nice to check if function changed, and warn if
             so.  */
@@ -14051,22 +14278,21 @@ update_breakpoint_locations (struct breakpoint *b,
   update_global_location_list (UGLL_MAY_INSERT);
 }
 
-/* Find the SaL locations corresponding to the given ADDR_STRING.
+/* Find the SaL locations corresponding to the given LOCATION.
    On return, FOUND will be 1 if any SaL was found, zero otherwise.  */
 
 static struct symtabs_and_lines
-addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found)
+location_to_sals (struct breakpoint *b, struct event_location *location,
+                 int *found)
 {
-  char *s;
   struct symtabs_and_lines sals = {0};
   struct gdb_exception exception = exception_none;
 
   gdb_assert (b->ops != NULL);
-  s = addr_string;
 
   TRY
     {
-      b->ops->decode_linespec (b, &s, &sals);
+      b->ops->decode_location (b, location, &sals);
     }
   CATCH (e, RETURN_MASK_ERROR)
     {
@@ -14108,20 +14334,24 @@ addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found)
 
       for (i = 0; i < sals.nelts; ++i)
        resolve_sal_pc (&sals.sals[i]);
-      if (b->condition_not_parsed && s && s[0])
+      if (b->condition_not_parsed && b->extra_string != NULL)
        {
          char *cond_string, *extra_string;
          int thread, task;
 
-         find_condition_and_thread (s, sals.sals[0].pc,
+         find_condition_and_thread (b->extra_string, sals.sals[0].pc,
                                     &cond_string, &thread, &task,
                                     &extra_string);
+         gdb_assert (b->cond_string == NULL);
          if (cond_string)
            b->cond_string = cond_string;
          b->thread = thread;
          b->task = task;
          if (extra_string)
-           b->extra_string = extra_string;
+           {
+             xfree (b->extra_string);
+             b->extra_string = extra_string;
+           }
          b->condition_not_parsed = 0;
        }
 
@@ -14148,16 +14378,16 @@ breakpoint_re_set_default (struct breakpoint *b)
   struct symtabs_and_lines expanded = {0};
   struct symtabs_and_lines expanded_end = {0};
 
-  sals = addr_string_to_sals (b, b->addr_string, &found);
+  sals = location_to_sals (b, b->location, &found);
   if (found)
     {
       make_cleanup (xfree, sals.sals);
       expanded = sals;
     }
 
-  if (b->addr_string_range_end)
+  if (b->location_range_end != NULL)
     {
-      sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found);
+      sals_end = location_to_sals (b, b->location_range_end, &found);
       if (found)
        {
          make_cleanup (xfree, sals_end.sals);
@@ -14172,12 +14402,11 @@ breakpoint_re_set_default (struct breakpoint *b)
    calls parse_breakpoint_sals.  Return 1 for success, zero for failure.  */
 
 static void
-create_sals_from_address_default (char **arg,
-                                 struct linespec_result *canonical,
-                                 enum bptype type_wanted,
-                                 char *addr_start, char **copy_arg)
+create_sals_from_location_default (const struct event_location *location,
+                                  struct linespec_result *canonical,
+                                  enum bptype type_wanted)
 {
-  parse_breakpoint_sals (arg, canonical);
+  parse_breakpoint_sals (location, canonical);
 }
 
 /* Call create_breakpoints_sal for the given arguments.  This is the default
@@ -14205,16 +14434,17 @@ create_breakpoints_sal_default (struct gdbarch *gdbarch,
 }
 
 /* Decode the line represented by S by calling decode_line_full.  This is the
-   default function for the `decode_linespec' method of breakpoint_ops.  */
+   default function for the `decode_location' method of breakpoint_ops.  */
 
 static void
-decode_linespec_default (struct breakpoint *b, char **s,
+decode_location_default (struct breakpoint *b,
+                        const struct event_location *location,
                         struct symtabs_and_lines *sals)
 {
   struct linespec_result canonical;
 
   init_linespec_result (&canonical);
-  decode_line_full (s, DECODE_LINE_FUNFIRSTLINE,
+  decode_line_full (location, DECODE_LINE_FUNFIRSTLINE,
                    (struct symtab *) NULL, 0,
                    &canonical, multiple_symbols_all,
                    b->filter);
@@ -14314,7 +14544,7 @@ breakpoint_re_set_thread (struct breakpoint *b)
   if (b->thread != -1)
     {
       if (in_thread_list (inferior_ptid))
-       b->thread = pid_to_thread_id (inferior_ptid);
+       b->thread = ptid_to_global_thread_id (inferior_ptid);
 
       /* We're being called after following a fork.  The new fork is
         selected as current, and unless this was a vfork will have a
@@ -14825,7 +15055,7 @@ insert_single_step_breakpoint (struct gdbarch *gdbarch,
   if (tp->control.single_step_breakpoints == NULL)
     {
       tp->control.single_step_breakpoints
-       = new_single_step_breakpoint (tp->num, gdbarch);
+       = new_single_step_breakpoint (tp->global_num, gdbarch);
     }
 
   sal = find_pc_line (pc, 0);
@@ -14886,16 +15116,20 @@ static void
 trace_command (char *arg, int from_tty)
 {
   struct breakpoint_ops *ops;
-  const char *arg_cp = arg;
+  struct event_location *location;
+  struct cleanup *back_to;
 
-  if (arg && probe_linespec_to_ops (&arg_cp))
+  location = string_to_event_location (&arg, current_language);
+  back_to = make_cleanup_delete_event_location (location);
+  if (location != NULL
+      && event_location_type (location) == PROBE_LOCATION)
     ops = &tracepoint_probe_breakpoint_ops;
   else
     ops = &tracepoint_breakpoint_ops;
 
   create_breakpoint (get_current_arch (),
-                    arg,
-                    NULL, 0, NULL, 1 /* parse arg */,
+                    location,
+                    NULL, 0, arg, 1 /* parse arg */,
                     0 /* tempflag */,
                     bp_tracepoint /* type_wanted */,
                     0 /* Ignore count */,
@@ -14904,14 +15138,20 @@ trace_command (char *arg, int from_tty)
                     from_tty,
                     1 /* enabled */,
                     0 /* internal */, 0);
+  do_cleanups (back_to);
 }
 
 static void
 ftrace_command (char *arg, int from_tty)
 {
+  struct event_location *location;
+  struct cleanup *back_to;
+
+  location = string_to_event_location (&arg, current_language);
+  back_to = make_cleanup_delete_event_location (location);
   create_breakpoint (get_current_arch (),
-                    arg,
-                    NULL, 0, NULL, 1 /* parse arg */,
+                    location,
+                    NULL, 0, arg, 1 /* parse arg */,
                     0 /* tempflag */,
                     bp_fast_tracepoint /* type_wanted */,
                     0 /* Ignore count */,
@@ -14920,6 +15160,7 @@ ftrace_command (char *arg, int from_tty)
                     from_tty,
                     1 /* enabled */,
                     0 /* internal */, 0);
+  do_cleanups (back_to);
 }
 
 /* strace command implementation.  Creates a static tracepoint.  */
@@ -14928,17 +15169,26 @@ static void
 strace_command (char *arg, int from_tty)
 {
   struct breakpoint_ops *ops;
+  struct event_location *location;
+  struct cleanup *back_to;
 
   /* Decide if we are dealing with a static tracepoint marker (`-m'),
      or with a normal static tracepoint.  */
   if (arg && startswith (arg, "-m") && isspace (arg[2]))
-    ops = &strace_marker_breakpoint_ops;
+    {
+      ops = &strace_marker_breakpoint_ops;
+      location = new_linespec_location (&arg);
+    }
   else
-    ops = &tracepoint_breakpoint_ops;
+    {
+      ops = &tracepoint_breakpoint_ops;
+      location = string_to_event_location (&arg, current_language);
+    }
 
+  back_to = make_cleanup_delete_event_location (location);
   create_breakpoint (get_current_arch (),
-                    arg,
-                    NULL, 0, NULL, 1 /* parse arg */,
+                    location,
+                    NULL, 0, arg, 1 /* parse arg */,
                     0 /* tempflag */,
                     bp_static_tracepoint /* type_wanted */,
                     0 /* Ignore count */,
@@ -14947,6 +15197,7 @@ strace_command (char *arg, int from_tty)
                     from_tty,
                     1 /* enabled */,
                     0 /* internal */, 0);
+  do_cleanups (back_to);
 }
 
 /* Set up a fake reader function that gets command lines from a linked
@@ -14978,6 +15229,8 @@ create_tracepoint_from_upload (struct uploaded_tp *utp)
 {
   char *addr_str, small_buf[100];
   struct tracepoint *tp;
+  struct event_location *location;
+  struct cleanup *cleanup;
 
   if (utp->at_string)
     addr_str = utp->at_string;
@@ -15000,9 +15253,11 @@ create_tracepoint_from_upload (struct uploaded_tp *utp)
               "has no source form, ignoring it"),
             utp->number);
 
+  location = string_to_event_location (&addr_str, current_language);
+  cleanup = make_cleanup_delete_event_location (location);
   if (!create_breakpoint (get_current_arch (),
-                         addr_str,
-                         utp->cond_string, -1, NULL,
+                         location,
+                         utp->cond_string, -1, addr_str,
                          0 /* parse cond/thread */,
                          0 /* tempflag */,
                          utp->type /* type_wanted */,
@@ -15013,7 +15268,12 @@ create_tracepoint_from_upload (struct uploaded_tp *utp)
                          utp->enabled /* enabled */,
                          0 /* internal */,
                          CREATE_BREAKPOINT_FLAGS_INSERTED))
-    return NULL;
+    {
+      do_cleanups (cleanup);
+      return NULL;
+    }
+
+  do_cleanups (cleanup);
 
   /* Get the tracepoint we just created.  */
   tp = get_tracepoint (tracepoint_count);
@@ -15440,26 +15700,46 @@ all_tracepoints (void)
 }
 
 \f
+/* This help string is used to consolidate all the help string for specifying
+   locations used by several commands.  */
+
+#define LOCATION_HELP_STRING \
+"Linespecs are colon-separated lists of location parameters, such as\n\
+source filename, function name, label name, and line number.\n\
+Example: To specify the start of a label named \"the_top\" in the\n\
+function \"fact\" in the file \"factorial.c\", use\n\
+\"factorial.c:fact:the_top\".\n\
+\n\
+Address locations begin with \"*\" and specify an exact address in the\n\
+program.  Example: To specify the fourth byte past the start function\n\
+\"main\", use \"*main + 4\".\n\
+\n\
+Explicit locations are similar to linespecs but use an option/argument\n\
+syntax to specify location parameters.\n\
+Example: To specify the start of the label named \"the_top\" in the\n\
+function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\
+-function fact -label the_top\".\n"
+
 /* This help string is used for the break, hbreak, tbreak and thbreak
    commands.  It is defined as a macro to prevent duplication.
    COMMAND should be a string constant containing the name of the
    command.  */
+
 #define BREAK_ARGS_HELP(command) \
 command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\
 PROBE_MODIFIER shall be present if the command is to be placed in a\n\
 probe point.  Accepted values are `-probe' (for a generic, automatically\n\
 guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\
 `-probe-dtrace' (for a DTrace probe).\n\
-LOCATION may be a line number, function name, or \"*\" and an address.\n\
-If a line number is specified, break at start of code for that line.\n\
-If a function is specified, break at start of code for that function.\n\
-If an address is specified, break at that exact address.\n\
+LOCATION may be a linespec, address, or explicit location as described\n\
+below.\n\
+\n\
 With no LOCATION, uses current execution address of the selected\n\
 stack frame.  This is useful for breaking on return to a stack frame.\n\
 \n\
 THREADNUM is the number from \"info threads\".\n\
 CONDITION is a boolean expression.\n\
-\n\
+\n" LOCATION_HELP_STRING "\n\
 Multiple breakpoints at one place are permitted, and useful if their\n\
 conditions are different.\n\
 \n\
@@ -15588,9 +15868,9 @@ initialize_breakpoint_ops (void)
   ops->insert_location = bkpt_insert_location;
   ops->remove_location = bkpt_remove_location;
   ops->breakpoint_hit = bkpt_breakpoint_hit;
-  ops->create_sals_from_address = bkpt_create_sals_from_address;
+  ops->create_sals_from_location = bkpt_create_sals_from_location;
   ops->create_breakpoints_sal = bkpt_create_breakpoints_sal;
-  ops->decode_linespec = bkpt_decode_linespec;
+  ops->decode_location = bkpt_decode_location;
 
   /* The breakpoint_ops structure to be used in regular breakpoints.  */
   ops = &bkpt_breakpoint_ops;
@@ -15638,8 +15918,8 @@ initialize_breakpoint_ops (void)
   *ops = bkpt_breakpoint_ops;
   ops->insert_location = bkpt_probe_insert_location;
   ops->remove_location = bkpt_probe_remove_location;
-  ops->create_sals_from_address = bkpt_probe_create_sals_from_address;
-  ops->decode_linespec = bkpt_probe_decode_linespec;
+  ops->create_sals_from_location = bkpt_probe_create_sals_from_location;
+  ops->decode_location = bkpt_probe_decode_location;
 
   /* Watchpoints.  */
   ops = &watchpoint_breakpoint_ops;
@@ -15677,22 +15957,22 @@ initialize_breakpoint_ops (void)
   ops->print_one_detail = tracepoint_print_one_detail;
   ops->print_mention = tracepoint_print_mention;
   ops->print_recreate = tracepoint_print_recreate;
-  ops->create_sals_from_address = tracepoint_create_sals_from_address;
+  ops->create_sals_from_location = tracepoint_create_sals_from_location;
   ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal;
-  ops->decode_linespec = tracepoint_decode_linespec;
+  ops->decode_location = tracepoint_decode_location;
 
   /* Probe tracepoints.  */
   ops = &tracepoint_probe_breakpoint_ops;
   *ops = tracepoint_breakpoint_ops;
-  ops->create_sals_from_address = tracepoint_probe_create_sals_from_address;
-  ops->decode_linespec = tracepoint_probe_decode_linespec;
+  ops->create_sals_from_location = tracepoint_probe_create_sals_from_location;
+  ops->decode_location = tracepoint_probe_decode_location;
 
   /* Static tracepoints with marker (`-m').  */
   ops = &strace_marker_breakpoint_ops;
   *ops = tracepoint_breakpoint_ops;
-  ops->create_sals_from_address = strace_marker_create_sals_from_address;
+  ops->create_sals_from_location = strace_marker_create_sals_from_location;
   ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal;
-  ops->decode_linespec = strace_marker_decode_linespec;
+  ops->decode_location = strace_marker_decode_location;
 
   /* Fork catchpoints.  */
   ops = &catch_fork_breakpoint_ops;
@@ -15906,20 +16186,17 @@ This command may be abbreviated \"delete\"."),
           &deletelist);
 
   add_com ("clear", class_breakpoint, clear_command, _("\
-Clear breakpoint at specified line or function.\n\
-Argument may be line number, function name, or \"*\" and an address.\n\
-If line number is specified, all breakpoints in that line are cleared.\n\
-If function is specified, breakpoints at beginning of function are cleared.\n\
-If an address is specified, breakpoints at that address are cleared.\n\
+Clear breakpoint at specified location.\n\
+Argument may be a linespec, explicit, or address location as described below.\n\
 \n\
 With no argument, clears all breakpoints in the line that the selected frame\n\
-is executing in.\n\
-\n\
+is executing in.\n"
+"\n" LOCATION_HELP_STRING "\n\
 See also the \"delete\" command which clears breakpoints by number."));
   add_com_alias ("cl", "clear", class_breakpoint, 1);
 
   c = add_com ("break", class_breakpoint, break_command, _("\
-Set breakpoint at specified line or function.\n"
+Set breakpoint at specified location.\n"
 BREAK_ARGS_HELP ("break")));
   set_cmd_completer (c, location_completer);
 
@@ -16082,7 +16359,7 @@ hardware.)"),
   /* Tracepoint manipulation commands.  */
 
   c = add_com ("trace", class_breakpoint, trace_command, _("\
-Set a tracepoint at specified line or function.\n\
+Set a tracepoint at specified location.\n\
 \n"
 BREAK_ARGS_HELP ("trace") "\n\
 Do \"help tracepoints\" for info on other tracepoint commands."));
@@ -16094,31 +16371,27 @@ Do \"help tracepoints\" for info on other tracepoint commands."));
   add_com_alias ("trac", "trace", class_alias, 1);
 
   c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\
-Set a fast tracepoint at specified line or function.\n\
+Set a fast tracepoint at specified location.\n\
 \n"
 BREAK_ARGS_HELP ("ftrace") "\n\
 Do \"help tracepoints\" for info on other tracepoint commands."));
   set_cmd_completer (c, location_completer);
 
   c = add_com ("strace", class_breakpoint, strace_command, _("\
-Set a static tracepoint at specified line, function or marker.\n\
+Set a static tracepoint at location or marker.\n\
 \n\
 strace [LOCATION] [if CONDITION]\n\
-LOCATION may be a line number, function name, \"*\" and an address,\n\
-or -m MARKER_ID.\n\
-If a line number is specified, probe the marker at start of code\n\
-for that line.  If a function is specified, probe the marker at start\n\
-of code for that function.  If an address is specified, probe the marker\n\
-at that exact address.  If a marker id is specified, probe the marker\n\
-with that name.  With no LOCATION, uses current execution address of\n\
-the selected stack frame.\n\
+LOCATION may be a linespec, explicit, or address location (described below) \n\
+or -m MARKER_ID.\n\n\
+If a marker id is specified, probe the marker with that name.  With\n\
+no LOCATION, uses current execution address of the selected stack frame.\n\
 Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\
 This collects arbitrary user data passed in the probe point call to the\n\
 tracing library.  You can inspect it when analyzing the trace buffer,\n\
 by printing the $_sdata variable like any other convenience variable.\n\
 \n\
 CONDITION is a boolean expression.\n\
-\n\
+\n" LOCATION_HELP_STRING "\n\
 Multiple tracepoints at one place are permitted, and useful if their\n\
 conditions are different.\n\
 \n\
@@ -16270,11 +16543,10 @@ an instruction at any address within the [START-LOCATION, END-LOCATION]\n\
 range (including START-LOCATION and END-LOCATION)."));
 
   c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\
-Set a dynamic printf at specified line or function.\n\
+Set a dynamic printf at specified location.\n\
 dprintf location,format string,arg1,arg2,...\n\
-location may be a line number, function name, or \"*\" and an address.\n\
-If a line number is specified, break at start of code for that line.\n\
-If a function is specified, break at start of code for that function."));
+location may be a linespec, explicit, or address location.\n"
+"\n" LOCATION_HELP_STRING));
   set_cmd_completer (c, location_completer);
 
   add_setshow_enum_cmd ("dprintf-style", class_support,