Initial creation of sourceware repository

1 files changed, 0 insertions, 6624 deletions

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
deleted file mode 100644
index 8ca2916..0000000
--- a/gdb/breakpoint.c
+++ /dev/null
@@ -1,6624 +0,0 @@
-/* Everything about breakpoints, for GDB.
-   Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
-             Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
-
-#include "defs.h"
-#include <ctype.h>
-#include "symtab.h"
-#include "frame.h"
-#include "breakpoint.h"
-#include "gdbtypes.h"
-#include "expression.h"
-#include "gdbcore.h"
-#include "gdbcmd.h"
-#include "value.h"
-#include "command.h"
-#include "inferior.h"
-#include "gdbthread.h"
-#include "target.h"
-#include "language.h"
-#include "gdb_string.h"
-#include "demangle.h"
-#include "annotate.h"
-#include "symfile.h"
-#include "objfiles.h"
-
-/* Prototypes for local functions. */
-
-static void
-catch_command_1 PARAMS ((char *, int, int));
-
-static void
-enable_delete_command PARAMS ((char *, int));
-
-static void
-enable_delete_breakpoint PARAMS ((struct breakpoint *));
-
-static void
-enable_once_command PARAMS ((char *, int));
-
-static void
-enable_once_breakpoint PARAMS ((struct breakpoint *));
-
-static void
-disable_command PARAMS ((char *, int));
-
-static void
-enable_command PARAMS ((char *, int));
-
-static void
-map_breakpoint_numbers PARAMS ((char *,	void (*)(struct breakpoint *)));
-
-static void
-ignore_command PARAMS ((char *, int));
-
-static int breakpoint_re_set_one PARAMS ((PTR));
-
-static void
-clear_command PARAMS ((char *, int));
-
-static void
-catch_command PARAMS ((char *, int));
-
-static void
-handle_gnu_4_16_catch_command PARAMS ((char *, int, int));
-
-static struct symtabs_and_lines
-get_catch_sals PARAMS ((int));
-
-static void
-watch_command PARAMS ((char *, int));
-
-static int
-can_use_hardware_watchpoint PARAMS ((struct value *));
-
-void
-tbreak_command PARAMS ((char *, int));
-
-static void
-break_command_1 PARAMS ((char *, int, int));
-
-static void
-mention PARAMS ((struct breakpoint *));
-
-struct breakpoint *
-set_raw_breakpoint PARAMS ((struct symtab_and_line));
-
-static void
-check_duplicates PARAMS ((CORE_ADDR, asection *));
-
-static void
-describe_other_breakpoints PARAMS ((CORE_ADDR, asection *));
-
-static void
-breakpoints_info PARAMS ((char *, int));
-
-static void
-breakpoint_1 PARAMS ((int, int));
-
-static bpstat
-bpstat_alloc PARAMS ((struct breakpoint *, bpstat));
-
-static int breakpoint_cond_eval PARAMS ((PTR));
-
-static void
-cleanup_executing_breakpoints PARAMS ((PTR));
-
-static void
-commands_command PARAMS ((char *, int));
-
-static void
-condition_command PARAMS ((char *, int));
-
-static int
-get_number PARAMS ((char **));
-
-void
-set_breakpoint_count PARAMS ((int));
-
-#if 0
-static struct breakpoint *
-create_temp_exception_breakpoint PARAMS ((CORE_ADDR));
-#endif
-
-typedef enum {
-  mark_inserted,
-  mark_uninserted,
-} insertion_state_t;
-
-static int
-remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t));
-
-static int print_it_normal PARAMS ((bpstat));
-
-typedef struct {
-  enum exception_event_kind kind;
-  int enable;
-} args_for_catchpoint_enable;
-
-static int watchpoint_check PARAMS ((PTR));
-
-static int cover_target_enable_exception_callback PARAMS ((PTR));
-
-static int print_it_done PARAMS ((bpstat));
-
-static int print_it_noop PARAMS ((bpstat));
-
-static void maintenance_info_breakpoints PARAMS ((char *, int));
-
-#ifdef GET_LONGJMP_TARGET
-static void create_longjmp_breakpoint PARAMS ((char *));
-#endif
-
-static int hw_breakpoint_used_count PARAMS ((void));
-
-static int hw_watchpoint_used_count PARAMS ((enum bptype, int *));
-
-static void hbreak_command PARAMS ((char *, int));
-
-static void thbreak_command PARAMS ((char *, int));
-
-static void watch_command_1 PARAMS ((char *, int, int));
-
-static void rwatch_command PARAMS ((char *, int));
-
-static void awatch_command PARAMS ((char *, int));
-
-static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp));
-
-/* Prototypes for exported functions. */
-
-static void
-awatch_command PARAMS ((char *, int));
-
-static void
-do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp));
-
-/* If FALSE, gdb will not use hardware support for watchpoints, even
-   if such is available. */
-static int can_use_hw_watchpoints;
-
-void delete_command PARAMS ((char *, int));
-
-void _initialize_breakpoint PARAMS ((void));
-
-void set_breakpoint_count PARAMS ((int));
-
-extern int addressprint;		/* Print machine addresses? */
-
-#if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD)
-static int internal_breakpoint_number = -1;
-#endif
-
-/* Are we executing breakpoint commands?  */
-static int executing_breakpoint_commands;
-
-/* Walk the following statement or block through all breakpoints.
-   ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
-   breakpoint.  */
-
-#define ALL_BREAKPOINTS(b)  for (b = breakpoint_chain; b; b = b->next)
-
-#define ALL_BREAKPOINTS_SAFE(b,tmp)	\
-	for (b = breakpoint_chain;	\
-	     b? (tmp=b->next, 1): 0;	\
-	     b = tmp)
-
-/* True if SHIFT_INST_REGS defined, false otherwise.  */
-
-int must_shift_inst_regs =
-#if defined(SHIFT_INST_REGS)
-1
-#else
-0
-#endif
-;
-
-/* True if breakpoint hit counts should be displayed in breakpoint info.  */
-
-int show_breakpoint_hit_counts = 1;
-
-/* Chain of all breakpoints defined.  */
-
-struct breakpoint *breakpoint_chain;
-
-/* Number of last breakpoint made.  */
-
-int breakpoint_count;
-
-/* Pointer to current exception event record */ 
-static struct exception_event_record * current_exception_event;
-
-/* Indicator of whether exception catchpoints should be nuked
-   between runs of a program */
-int exception_catchpoints_are_fragile = 0;
- 
-/* Indicator of when exception catchpoints set-up should be
-   reinitialized -- e.g. when program is re-run */
-int exception_support_initialized = 0;
-
-
-/* Set breakpoint count to NUM.  */
-
-void
-set_breakpoint_count (num)
-     int num;
-{
-  breakpoint_count = num;
-  set_internalvar (lookup_internalvar ("bpnum"),
-		   value_from_longest (builtin_type_int, (LONGEST) num));
-}
-
-/* Used in run_command to zero the hit count when a new run starts. */
-
-void
-clear_breakpoint_hit_counts ()
-{
-  struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    b->hit_count = 0;
-}
-
-/* Default address, symtab and line to put a breakpoint at
-   for "break" command with no arg.
-   if default_breakpoint_valid is zero, the other three are
-   not valid, and "break" with no arg is an error.
-
-   This set by print_stack_frame, which calls set_default_breakpoint.  */
-
-int default_breakpoint_valid;
-CORE_ADDR default_breakpoint_address;
-struct symtab *default_breakpoint_symtab;
-int default_breakpoint_line;
-
-/* *PP is a string denoting a breakpoint.  Get the number of the breakpoint.
-   Advance *PP after the string and any trailing whitespace.
-
-   Currently the string can either be a number or "$" followed by the name
-   of a convenience variable.  Making it an expression wouldn't work well
-   for map_breakpoint_numbers (e.g. "4 + 5 + 6").  */
-static int
-get_number (pp)
-     char **pp;
-{
-  int retval;
-  char *p = *pp;
-
-  if (p == NULL)
-    /* Empty line means refer to the last breakpoint.  */
-    return breakpoint_count;
-  else if (*p == '$')
-    {
-      /* Make a copy of the name, so we can null-terminate it
-	 to pass to lookup_internalvar().  */
-      char *varname;
-      char *start = ++p;
-      value_ptr val;
-
-      while (isalnum (*p) || *p == '_')
-	p++;
-      varname = (char *) alloca (p - start + 1);
-      strncpy (varname, start, p - start);
-      varname[p - start] = '\0';
-      val = value_of_internalvar (lookup_internalvar (varname));
-      if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT)
-	error (
-"Convenience variables used to specify breakpoints must have integer values."
-	       );
-      retval = (int) value_as_long (val);
-    }
-  else
-    {
-      if (*p == '-')
-	++p;
-      while (*p >= '0' && *p <= '9')
-	++p;
-      if (p == *pp)
-	/* There is no number here.  (e.g. "cond a == b").  */
-	error_no_arg ("breakpoint number");
-      retval = atoi (*pp);
-    }
-  if (!(isspace (*p) || *p == '\0'))
-    error ("breakpoint number expected");
-  while (isspace (*p))
-    p++;
-  *pp = p;
-  return retval;
-}
-
-/* condition N EXP -- set break condition of breakpoint N to EXP.  */
-
-static void
-condition_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  register struct breakpoint *b;
-  char *p;
-  register int bnum;
-
-  if (arg == 0)
-    error_no_arg ("breakpoint number");
-
-  p = arg;
-  bnum = get_number (&p);
-
-  ALL_BREAKPOINTS (b)
-    if (b->number == bnum)
-      {
-	if (b->cond)
-	  {
-	    free ((PTR)b->cond);
-	    b->cond = 0;
-	  }
-	if (b->cond_string != NULL)
-	  free ((PTR)b->cond_string);
-
-	if (*p == 0)
-	  {
-	    b->cond = 0;
-	    b->cond_string = NULL;
-	    if (from_tty)
-	      printf_filtered ("Breakpoint %d now unconditional.\n", bnum);
-	  }
-	else
-	  {
-	    arg = p;
-	    /* I don't know if it matters whether this is the string the user
-	       typed in or the decompiled expression.  */
-	    b->cond_string = savestring (arg, strlen (arg));
-	    b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0);
-	    if (*arg)
-	      error ("Junk at end of expression");
-	  }
-	breakpoints_changed ();
-	return;
-      }
-
-  error ("No breakpoint number %d.", bnum);
-}
-
-/* ARGSUSED */
-static void
-commands_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  register struct breakpoint *b;
-  char *p;
-  register int bnum;
-  struct command_line *l;
-
-  /* If we allowed this, we would have problems with when to
-     free the storage, if we change the commands currently
-     being read from.  */
-
-  if (executing_breakpoint_commands)
-    error ("Can't use the \"commands\" command among a breakpoint's commands.");
-
-  p = arg;
-  bnum = get_number (&p);
-  if (p && *p)
-    error ("Unexpected extra arguments following breakpoint number.");
-      
-  ALL_BREAKPOINTS (b)
-    if (b->number == bnum)
-      {
-	char tmpbuf[128];
-	sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum);
-	l = read_command_lines (tmpbuf, from_tty);
-	free_command_lines (&b->commands);
-	b->commands = l;
-	breakpoints_changed ();
-	return;
-      }
-  error ("No breakpoint number %d.", bnum);
-}
-
-/* Like target_read_memory() but if breakpoints are inserted, return
-   the shadow contents instead of the breakpoints themselves.
-
-   Read "memory data" from whatever target or inferior we have. 
-   Returns zero if successful, errno value if not.  EIO is used
-   for address out of bounds.  If breakpoints are inserted, returns
-   shadow contents, not the breakpoints themselves.  From breakpoint.c.  */
-
-int
-read_memory_nobpt (memaddr, myaddr, len)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     unsigned len;
-{
-  int status;
-  struct breakpoint *b;
-  CORE_ADDR bp_addr = 0;
-  int bp_size = 0;
-
-  if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
-    /* No breakpoints on this machine. */
-    return target_read_memory (memaddr, myaddr, len);
-  
-  ALL_BREAKPOINTS (b)
-    {
-      if (b->type == bp_none)
-        warning ("attempted to read through apparently deleted breakpoint #%d?\n", b->number);
-
-      /* memory breakpoint? */
-      if (b->type == bp_watchpoint
-	  || b->type == bp_hardware_watchpoint
-	  || b->type == bp_read_watchpoint
-	  || b->type == bp_access_watchpoint)
-	continue;
-      /* bp in memory? */
-      if (!b->inserted)
-	continue;
-      /* Addresses and length of the part of the breakpoint that
-	 we need to copy.  */
-      /* XXXX The m68k, sh and h8300 have different local and remote
-	 breakpoint values.  BREAKPOINT_FROM_PC still manages to
-	 correctly determine the breakpoints memory address and size
-	 for these targets. */
-      bp_addr = b->address;
-      bp_size = 0;
-      if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
-	continue;
-      if (bp_size == 0)
-	/* bp isn't valid */
-	continue;
-      if (bp_addr + bp_size <= memaddr)
-	/* The breakpoint is entirely before the chunk of memory we
-	   are reading.  */
-	continue;
-      if (bp_addr >= memaddr + len)
-	/* The breakpoint is entirely after the chunk of memory we are
-	   reading. */
-	continue;
-      /* Copy the breakpoint from the shadow contents, and recurse for
-	 the things before and after.  */
-      {
-	/* Offset within shadow_contents.  */
-	int bptoffset = 0;
-	  
-	if (bp_addr < memaddr)
-	  {
-	    /* Only copy the second part of the breakpoint.  */
-	    bp_size -= memaddr - bp_addr;
-	    bptoffset = memaddr - bp_addr;
-	    bp_addr = memaddr;
-	  }
-	
-	if (bp_addr + bp_size > memaddr + len)
-	  {
-	    /* Only copy the first part of the breakpoint.  */
-	    bp_size -= (bp_addr + bp_size) - (memaddr + len);
-	  }
-	
-	memcpy (myaddr + bp_addr - memaddr, 
-		b->shadow_contents + bptoffset, bp_size);
-	
-	if (bp_addr > memaddr)
-	  {
-	    /* Copy the section of memory before the breakpoint.  */
-	    status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr);
-	    if (status != 0)
-	      return status;
-	  }
-	
-	if (bp_addr + bp_size < memaddr + len)
-	  {
-	    /* Copy the section of memory after the breakpoint.  */
-	    status = read_memory_nobpt
-	      (bp_addr + bp_size,
-	       myaddr + bp_addr + bp_size - memaddr,
-	       memaddr + len - (bp_addr + bp_size));
-	    if (status != 0)
-	      return status;
-	  }
-	return 0;
-      }
-    }
-  /* Nothing overlaps.  Just call read_memory_noerr.  */
-  return target_read_memory (memaddr, myaddr, len);
-}
-
-
-/* insert_breakpoints is used when starting or continuing the program.
-   remove_breakpoints is used when the program stops.
-   Both return zero if successful,
-   or an `errno' value if could not write the inferior.  */
-
-int
-insert_breakpoints ()
-{
-  register struct breakpoint *b, *temp;
-  int val = 0;
-  int disabled_breaks = 0;
-
-  static char message1[] = "Error inserting catchpoint %d:\n";
-  static char message[sizeof (message1) + 30];
-
-
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    {
-      if (b->type != bp_watchpoint
-	  && b->type != bp_hardware_watchpoint
-	  && b->type != bp_read_watchpoint
-	  && b->type != bp_access_watchpoint
-	  && b->type != bp_catch_fork
-	  && b->type != bp_catch_vfork
-	  && b->type != bp_catch_exec
-          && b->type != bp_catch_throw
-          && b->type != bp_catch_catch
-	  && b->enable != disabled
-	  && b->enable != shlib_disabled
-          && b->enable != call_disabled
-	  && ! b->inserted
-	  && ! b->duplicate)
-	{
-	  if (b->type == bp_hardware_breakpoint)
-	    val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
-	  else
-	    {
-	      /* Check to see if breakpoint is in an overlay section;
-		 if so, we should set the breakpoint at the LMA address.
-		 Only if the section is currently mapped should we ALSO
-		 set a break at the VMA address. */
-	      if (overlay_debugging && b->section &&
-		  section_is_overlay (b->section))
-		{
-		  CORE_ADDR addr;
-
-		  addr = overlay_unmapped_address (b->address, b->section);
-		  val = target_insert_breakpoint (addr, b->shadow_contents);
-		  /* This would be the time to check val, to see if the
-		     breakpoint write to the load address succeeded.  
-		     However, this might be an ordinary occurrance, eg. if 
-		     the unmapped overlay is in ROM.  */
-		  val = 0;	/* in case unmapped address failed */
-		  if (section_is_mapped (b->section))
-		    val = target_insert_breakpoint (b->address, 
-						    b->shadow_contents);
-		}
-	      else /* ordinary (non-overlay) address */
-		val = target_insert_breakpoint(b->address, b->shadow_contents);
-	    }
-	  if (val)
-	    {
-	      /* Can't set the breakpoint.  */
-#if defined (DISABLE_UNSETTABLE_BREAK)
-	      if (DISABLE_UNSETTABLE_BREAK (b->address))
-		{
-                  /* See also: disable_breakpoints_in_shlibs. */
-		  val = 0;
-		  b->enable = shlib_disabled;
-		  if (!disabled_breaks)
-		    {
-		      target_terminal_ours_for_output ();
-		      fprintf_unfiltered (gdb_stderr,
-					  "Cannot insert breakpoint %d:\n", b->number);
-		      printf_filtered ("Temporarily disabling shared library breakpoints:\n");
-		    }
-		  disabled_breaks = 1;
-		  printf_filtered ("%d ", b->number);
-		}
-	      else
-#endif
-		{
-		  target_terminal_ours_for_output ();
-		  fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
-#ifdef ONE_PROCESS_WRITETEXT
-		  fprintf_unfiltered (gdb_stderr,
-				      "The same program may be running in another process.\n");
-#endif
-		  memory_error (val, b->address);	/* which bombs us out */
-		}
-	    }
-	  else
-            b->inserted = 1;
-       }
-    else if (ep_is_exception_catchpoint (b)
-             && b->enable != disabled
-             && b->enable != shlib_disabled
-             && b->enable != call_disabled
-             && ! b->inserted
-             && ! b->duplicate)
-
-      {
-         /* If we get here, we must have a callback mechanism for exception
-            events -- with g++ style embedded label support, we insert
-            ordinary breakpoints and not catchpoints. */ 
-        sprintf (message, message1, b->number); /* Format possible error message */
- 
-        val = target_insert_breakpoint(b->address, b->shadow_contents);
-        if (val)
-          {
-           /* Couldn't set breakpoint for some reason */ 
-           target_terminal_ours_for_output ();
-           fprintf_unfiltered (gdb_stderr,
-                        "Cannot insert catchpoint %d; disabling it\n", b->number);
-           b->enable = disabled;
-          }
-        else
-          {
-              /* Bp set, now make sure callbacks are enabled */ 
-	    int val;
-	    args_for_catchpoint_enable args;  
-	    args.kind = b->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW;
-	    args.enable = 1;
-	    val = catch_errors (cover_target_enable_exception_callback,
-				&args,
-				message, RETURN_MASK_ALL);
-	    if (val != 0 && val != -1)
-	      {
-		b->inserted = 1;
-	      }
-	    /* Check if something went wrong; val == 0 can be ignored */ 
-	    if (val == -1)
-	      {
-		/* something went wrong */ 
-		target_terminal_ours_for_output ();
-		fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d; disabling it\n", b->number);
-		b->enable = disabled;
-	      }
-          }
-      }
-
-      else if ((b->type == bp_hardware_watchpoint ||
-		b->type == bp_read_watchpoint ||
-		b->type == bp_access_watchpoint)
-	       && b->enable == enabled
-	       && ! b->inserted
-	       && ! b->duplicate)
-	{
-	  struct frame_info *saved_frame;
-	  int saved_level, within_current_scope;
-	  value_ptr mark = value_mark ();
-	  value_ptr v;
-
-	  /* Save the current frame and level so we can restore it after
-	     evaluating the watchpoint expression on its own frame.  */
-	  saved_frame = selected_frame;
-	  saved_level = selected_frame_level;
-
-	  /* Determine if the watchpoint is within scope.  */
-	  if (b->exp_valid_block == NULL)
-	    within_current_scope = 1;
-	  else
-	    {
-	      struct frame_info *fi;
-
-	      /* There might be no current frame at this moment if we are
-		 resuming from a step over a breakpoint.
-		 Set up current frame before trying to find the watchpoint
-		 frame.  */
-	      get_current_frame ();
-	      fi = find_frame_addr_in_frame_chain (b->watchpoint_frame);
-	      within_current_scope = (fi != NULL);
-	      if (within_current_scope)
-		select_frame (fi, -1);
-	    }
-	
-	  if (within_current_scope)
-	    {
-	      /* Evaluate the expression and cut the chain of values
-		 produced off from the value chain.  */
-	      v = evaluate_expression (b->exp);
-	      value_release_to_mark (mark);
-	    
-	      b->val_chain = v;
-	      b->inserted = 1;
-
-	      /* Look at each value on the value chain.  */
-	      for ( ; v; v=v->next)
-		{
-		  /* If it's a memory location, then we must watch it.  */
-		  if (v->lval == lval_memory)
-		    {
-		      int addr, len, type;
-		    
-		      addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
-		      len = TYPE_LENGTH (VALUE_TYPE (v));
-		      type = 0;
-		      if (b->type == bp_read_watchpoint)
-			type = 1;
-		      else if (b->type == bp_access_watchpoint)
-			type = 2;
-
-		      val = target_insert_watchpoint (addr, len, type);
-		      if (val == -1)
-			{
-			  b->inserted = 0;
-			  break;
-			}
-		      val = 0;
-		    }
-		}
-	      /* Failure to insert a watchpoint on any memory value in the
-		 value chain brings us here.  */
-	      if (!b->inserted)
-		warning ("Hardware watchpoint %d: Could not insert watchpoint\n",
-			 b->number);
-	    }
-	  else
-	    {
-	      printf_filtered ("\
-Hardware watchpoint %d deleted because the program has left the block in\n\
-which its expression is valid.\n", b->number);
-	      if (b->related_breakpoint)
-		b->related_breakpoint->disposition = del_at_next_stop;
-	      b->disposition = del_at_next_stop;
-	    }
-
-	  /* Restore the frame and level.  */
-	  if ((saved_frame != selected_frame) ||
-	      (saved_level != selected_frame_level))
-	    select_and_print_frame (saved_frame, saved_level);
-	} 
-      else if ((b->type == bp_catch_fork
-                || b->type == bp_catch_vfork
-                || b->type == bp_catch_exec)
-               && b->enable == enabled
-               && ! b->inserted
-               && ! b->duplicate)
-	{
-	  val = -1;
-          switch (b->type)
-            {
-	    case bp_catch_fork :
-	      val = target_insert_fork_catchpoint (inferior_pid);
-	      break;
-	    case bp_catch_vfork :
-	      val = target_insert_vfork_catchpoint (inferior_pid);
-	      break;
-	    case bp_catch_exec :
-	      val = target_insert_exec_catchpoint (inferior_pid);
-	      break;
-            }
-          if (val < 0)
-            {
-              target_terminal_ours_for_output ();
-              fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d:\n", b->number);
-            }
-          else
-            b->inserted = 1;
-        }
-    }
-  if (disabled_breaks)
-    printf_filtered ("\n");
-
-  return val;
-}
-
-
-int
-remove_breakpoints ()
-{
-  register struct breakpoint *b;
-  int val;
-
-  ALL_BREAKPOINTS (b)
-    {
-      if (b->inserted)
-	{
-	  val = remove_breakpoint (b, mark_uninserted);
-	  if (val != 0)
-	    return val;
-	}
-    }
-  return 0;
-}
-
-int
-reattach_breakpoints (pid)
-  int  pid;
-{
-  register struct breakpoint *b;
-  int val;
-  int  saved_inferior_pid = inferior_pid;
-
-  inferior_pid = pid;  /* Because remove_breakpoint will use this global. */
-  ALL_BREAKPOINTS (b)
-    {
-      if (b->inserted)
-	{
-          remove_breakpoint (b, mark_inserted);
-          if (b->type == bp_hardware_breakpoint)
-            val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
-          else
-            val = target_insert_breakpoint(b->address, b->shadow_contents);
-	  if (val != 0)
-            {
-              inferior_pid = saved_inferior_pid;
-              return val;
-            }
-        }
-    }
-  inferior_pid = saved_inferior_pid;
-  return 0;
-}
-
-void
-update_breakpoints_after_exec ()
-{
-  struct breakpoint *  b;
-  struct breakpoint *  temp;
-
-  /* Doing this first prevents the badness of having delete_breakpoint()
-     write a breakpoint's current "shadow contents" to lift the bp.  That
-     shadow is NOT valid after an exec()! */
-  mark_breakpoints_out ();
-
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    {
-      /* Solib breakpoints must be explicitly reset after an exec(). */
-      if (b->type == bp_shlib_event)
-        {
-          delete_breakpoint (b);
-          continue;
-        }
-
-      /* Step-resume breakpoints are meaningless after an exec(). */
-      if (b->type == bp_step_resume)
-        {
-          delete_breakpoint (b);
-          continue;
-        }
-
-      /* Ditto the sigtramp handler breakpoints. */
-      if (b->type == bp_through_sigtramp)
-        {
-          delete_breakpoint (b);
-          continue;
-        }
-
-      /* Ditto the exception-handling catchpoints. */
-      if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw))
-        {
-          delete_breakpoint (b);
-          continue;
-        }
-
-      /* Don't delete an exec catchpoint, because else the inferior
-         won't stop when it ought!
-
-         Similarly, we probably ought to keep vfork catchpoints, 'cause
-         on this target, we may not be able to stop when the vfork is seen,
-         but only when the subsequent exec is seen.  (And because deleting
-         fork catchpoints here but not vfork catchpoints will seem mysterious
-         to users, keep those too.)
-
-         ??rehrauer: Let's hope that merely clearing out this catchpoint's
-         target address field, if any, is sufficient to have it be reset
-         automagically.  Certainly on HP-UX that's true. */
-      if ((b->type == bp_catch_exec) ||
-          (b->type == bp_catch_vfork) ||
-          (b->type == bp_catch_fork))
-        {
-          b->address = (CORE_ADDR) NULL;
-          continue;
-        }
-
-      /* bp_finish is a special case.  The only way we ought to be able
-         to see one of these when an exec() has happened, is if the user
-         caught a vfork, and then said "finish".  Ordinarily a finish just
-         carries them to the call-site of the current callee, by setting
-         a temporary bp there and resuming.  But in this case, the finish
-         will carry them entirely through the vfork & exec.
-
-         We don't want to allow a bp_finish to remain inserted now.  But
-         we can't safely delete it, 'cause finish_command has a handle to
-         the bp on a bpstat, and will later want to delete it.  There's a
-         chance (and I've seen it happen) that if we delete the bp_finish
-         here, that its storage will get reused by the time finish_command
-         gets 'round to deleting the "use to be a bp_finish" breakpoint.
-         We really must allow finish_command to delete a bp_finish.
-
-         In the absense of a general solution for the "how do we know it's
-         safe to delete something others may have handles to?" problem, what
-         we'll do here is just uninsert the bp_finish, and let finish_command
-         delete it.
-
-         (We know the bp_finish is "doomed" in the sense that it's momentary,
-         and will be deleted as soon as finish_command sees the inferior stopped.
-         So it doesn't matter that the bp's address is probably bogus in the
-         new a.out, unlike e.g., the solib breakpoints.)  */
-      if (b->type == bp_finish)
-        {
-          continue;
-        }
-
-      /* 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)
-        {
-          delete_breakpoint (b);
-          continue;
-        }
-
-      /* If this breakpoint has survived the above battery of checks, then
-         it must have a symbolic address.  Be sure that it gets reevaluated
-         to a target address, rather than reusing the old evaluation.  */
-      b->address = (CORE_ADDR) NULL;
-    }
-}
-
-int
-detach_breakpoints (pid)
-  int  pid;
-{
-  register struct breakpoint *b;
-  int val;
-  int  saved_inferior_pid = inferior_pid;
- 
-  if (pid == inferior_pid)
-    error ("Cannot detach breakpoints of inferior_pid");
- 
-  inferior_pid = pid;  /* Because remove_breakpoint will use this global. */
-  ALL_BREAKPOINTS (b)
-    {
-      if (b->inserted)
-        {
-          val = remove_breakpoint (b, mark_inserted);
-          if (val != 0)
-            {
-              inferior_pid = saved_inferior_pid;
-              return val;
-            }
-        }
-    }
-  inferior_pid = saved_inferior_pid;
-  return 0;
-}
-
-static int
-remove_breakpoint (b, is)
-     struct breakpoint *b;
-     insertion_state_t  is;
-{
-  int val;
-  
-  if (b->type == bp_none)
-    warning ("attempted to remove apparently deleted breakpoint #%d?\n", b->number);
-
-  if (b->type != bp_watchpoint
-      && b->type != bp_hardware_watchpoint
-      && b->type != bp_read_watchpoint
-      && b->type != bp_access_watchpoint
-      && b->type != bp_catch_fork
-      && b->type != bp_catch_vfork
-      && b->type != bp_catch_exec
-      && b->type != bp_catch_catch
-      && b->type != bp_catch_throw)
-      
-    {
-      if (b->type == bp_hardware_breakpoint)
-        val = target_remove_hw_breakpoint(b->address, b->shadow_contents);
-      else
-	{
-	  /* Check to see if breakpoint is in an overlay section;
-	     if so, we should remove the breakpoint at the LMA address.
-	     If that is not equal to the raw address, then we should 
-	     presumable remove the breakpoint there as well.  */
-	  if (overlay_debugging && b->section && 
-	      section_is_overlay (b->section))
-	    {
-	      CORE_ADDR addr;
-
-	      addr = overlay_unmapped_address (b->address, b->section);
-	      val = target_remove_breakpoint (addr, b->shadow_contents);
-	      /* This would be the time to check val, to see if the
-		 shadow breakpoint write to the load address succeeded.  
-		 However, this might be an ordinary occurrance, eg. if 
-		 the unmapped overlay is in ROM.  */
-	      val = 0;	/* in case unmapped address failed */
-	      if (section_is_mapped (b->section))
-		val = target_remove_breakpoint (b->address, 
-						b->shadow_contents);
-	    }
-	  else /* ordinary (non-overlay) address */
-	    val = target_remove_breakpoint(b->address, b->shadow_contents);
-	}
-      if (val)
-	return val;
-      b->inserted = (is == mark_inserted);
-    }
-  else if ((b->type == bp_hardware_watchpoint ||
-            b->type == bp_read_watchpoint ||
-  	    b->type == bp_access_watchpoint)
-	   && b->enable == enabled
-	   && ! b->duplicate)
-    {
-      value_ptr v, n;
-      
-      b->inserted = (is == mark_inserted);
-      /* Walk down the saved value chain.  */
-      for (v = b->val_chain; v; v = v->next)
-	{
-	  /* For each memory reference remove the watchpoint
-	     at that address.  */
-	  if (v->lval == lval_memory)
-	    {
-	      int addr, len, type;
-	      
-	      addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
-	      len = TYPE_LENGTH (VALUE_TYPE (v));
-	      type = 0;
-	      if (b->type == bp_read_watchpoint)
-		type = 1;
-	      else if (b->type == bp_access_watchpoint)
-		type = 2;
-
-	      val = target_remove_watchpoint (addr, len, type);
-	      if (val == -1)
-		b->inserted = 1;
-	      val = 0;
-	    }
-	}
-      /* Failure to remove any of the hardware watchpoints comes here.  */
-      if ((is == mark_uninserted) && (b->inserted))
-	warning ("Hardware watchpoint %d: Could not remove watchpoint\n",
-		 b->number);
-      
-      /* Free the saved value chain.  We will construct a new one
-	 the next time the watchpoint is inserted.  */
-      for (v = b->val_chain; v; v = n)
-	{
-	  n = v->next;
-	  value_free (v);
-	}
-      b->val_chain = NULL;
-    }
-  else if ((b->type == bp_catch_fork ||
-            b->type == bp_catch_vfork ||
-  	    b->type == bp_catch_exec)
-	   && b->enable == enabled
-	   && ! b->duplicate)
-    {
-      val = -1;
-      switch (b->type)
-        {
-          case bp_catch_fork:
-            val = target_remove_fork_catchpoint (inferior_pid);
-            break;
-          case bp_catch_vfork :
-            val = target_remove_vfork_catchpoint (inferior_pid);
-            break;
-          case bp_catch_exec :
-            val = target_remove_exec_catchpoint (inferior_pid);
-            break;
-        }
-      if (val)
-	return val;
-      b->inserted = (is == mark_inserted);
-    }
-  else if ((b->type == bp_catch_catch ||
-            b->type == bp_catch_throw)
-           && b->enable == enabled
-           && ! b->duplicate)
-    {
-
-      val = target_remove_breakpoint(b->address, b->shadow_contents);
-      if (val)
-        return val;
-      b->inserted = (is == mark_inserted);
-    }
-  else if (ep_is_exception_catchpoint (b)
-           && b->inserted /* sometimes previous insert doesn't happen */ 
-           && b->enable == enabled
-           && ! b->duplicate)
-    {
-
-      val = target_remove_breakpoint(b->address, b->shadow_contents);
-      if (val)
-          return val;
-      
-      b->inserted = (is == mark_inserted);
-    }
-
-  return 0;
-}
-
-/* Clear the "inserted" flag in all breakpoints.  */
-
-void
-mark_breakpoints_out ()
-{
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    b->inserted = 0;
-}
-
-/* Clear the "inserted" flag in all breakpoints and delete any breakpoints
-   which should go away between runs of the program.
-
-   Plus other such housekeeping that has to be done for breakpoints
-   between runs.
-
-   Note: this function gets called at the end of a run (by generic_mourn_inferior)
-   and when a run begins (by init_wait_for_inferior). */ 
-
-
-
-void
-breakpoint_init_inferior (context)
-  enum inf_context context;
-{
-  register struct breakpoint *b, *temp;
-  static int warning_needed = 0;
-
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    {
-      b->inserted = 0;
-
-      switch (b->type)
-	{
-	case bp_call_dummy:
-	case bp_watchpoint_scope:
-
-	  /* If the call dummy breakpoint is at the entry point it will
-	     cause problems when the inferior is rerun, so we better
-	     get rid of it. 
-
-	     Also get rid of scope breakpoints.  */
-	  delete_breakpoint (b);
-	  break;
-
-	case bp_watchpoint:
-	case bp_hardware_watchpoint:
-	case bp_read_watchpoint:
-	case bp_access_watchpoint:
-
-	  /* Likewise for watchpoints on local expressions.  */
-	  if (b->exp_valid_block != NULL)
-	    delete_breakpoint (b);
-	  break;
-	default:
-         /* Likewise for exception catchpoints in dynamic-linked
-         executables where required */
-         if (ep_is_exception_catchpoint (b) &&
-            exception_catchpoints_are_fragile)
-          {
-            warning_needed = 1;
-            delete_breakpoint (b);
-          }
-          break;
-	}
-    }
-
-  if (exception_catchpoints_are_fragile)
-    exception_support_initialized = 0;
-
-  /* Don't issue the warning unless it's really needed... */ 
-  if (warning_needed && (context != inf_exited))
-    {
-      warning ("Exception catchpoints from last run were deleted, you must reinsert them explicitly");
-      warning_needed = 0;
-    }  
-}
-
-/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC.
-   When continuing from a location with a breakpoint,
-   we actually single step once before calling insert_breakpoints.  */
-
-int
-breakpoint_here_p (pc)
-     CORE_ADDR pc;
-{
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (b->enable == enabled
-	&& b->enable != shlib_disabled
-	&& b->enable != call_disabled
-	&& b->address == pc)	/* bp is enabled and matches pc */
-      {
-        if (overlay_debugging &&
-	    section_is_overlay (b->section) &&
-	    !section_is_mapped (b->section))
-	  continue;		/* unmapped overlay -- can't be a match */
-        else
-	  return 1;
-      }
-
-  return 0;
-}
-
-/* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it
-   only returns true if there is actually a breakpoint inserted at PC.  */
-
-int
-breakpoint_inserted_here_p (pc)
-     CORE_ADDR pc;
-{
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (b->inserted
-	&& b->address == pc)	/* bp is inserted and matches pc */
-      {
-        if (overlay_debugging &&
-	    section_is_overlay (b->section) &&
-	    !section_is_mapped (b->section))
-	  continue;		/* unmapped overlay -- can't be a match */
-        else
-	  return 1;
-      }
-
-  return 0;
-}
-
-/* Return nonzero if FRAME is a dummy frame.  We can't use PC_IN_CALL_DUMMY
-   because figuring out the saved SP would take too much time, at least using
-   get_saved_register on the 68k.  This means that for this function to
-   work right a port must use the bp_call_dummy breakpoint.  */
-
-int
-frame_in_dummy (frame)
-     struct frame_info *frame;
-{
-#ifdef CALL_DUMMY
-#ifdef USE_GENERIC_DUMMY_FRAMES 
-  return generic_pc_in_call_dummy (frame->pc, frame->frame);
-#else
-  struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    {
-      static ULONGEST dummy[] = CALL_DUMMY;
-
-      if (b->type == bp_call_dummy
-	  && b->frame == frame->frame
-
-	  /* We need to check the PC as well as the frame on the sparc,
-	     for signals.exp in the testsuite.  */
-	  && (frame->pc
-	      >= (b->address
-		  - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE))
-	  && frame->pc <= b->address)
-	return 1;
-    }
-#endif	/* GENERIC_DUMMY_FRAMES */
-#endif /* CALL_DUMMY */
-  return 0;
-}
-
-/* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC
-   is valid for process/thread PID.  */
-
-int
-breakpoint_thread_match (pc, pid)
-     CORE_ADDR pc;
-     int pid;
-{
-  struct breakpoint *b;
-  int thread;
-
-  thread = pid_to_thread_id (pid);
-
-  ALL_BREAKPOINTS (b)
-    if (b->enable != disabled
-	&& b->enable != shlib_disabled
-	&& b->enable != call_disabled
-	&& b->address == pc
-	&& (b->thread == -1 || b->thread == thread))
-      {
-        if (overlay_debugging &&
-	    section_is_overlay (b->section) &&
-	    !section_is_mapped (b->section))
-	  continue;		/* unmapped overlay -- can't be a match */
-        else
-	  return 1;
-      }
-
-  return 0;
-}
-
-
-/* bpstat stuff.  External routines' interfaces are documented
-   in breakpoint.h.  */
-
-int
-ep_is_catchpoint (ep)
-  struct breakpoint *  ep;
-{
-  return
-    (ep->type == bp_catch_load)
-    || (ep->type == bp_catch_unload)
-    || (ep->type == bp_catch_fork)
-    || (ep->type == bp_catch_vfork)
-    || (ep->type == bp_catch_exec)
-    || (ep->type == bp_catch_catch)
-    || (ep->type == bp_catch_throw)
-
-
-    /* ??rehrauer: Add more kinds here, as are implemented... */
-    ;
-}
- 
-int
-ep_is_shlib_catchpoint (ep)
-  struct breakpoint *  ep;
-{
-  return
-    (ep->type == bp_catch_load)
-    || (ep->type == bp_catch_unload)
-    ;
-}
-
-int
-ep_is_exception_catchpoint (ep)
-  struct breakpoint *  ep;
-{
-  return
-    (ep->type == bp_catch_catch)
-    || (ep->type == bp_catch_throw)
-    ;
-}
-
-/* Clear a bpstat so that it says we are not at any breakpoint.
-   Also free any storage that is part of a bpstat.  */
-
-void
-bpstat_clear (bsp)
-     bpstat *bsp;
-{
-  bpstat p;
-  bpstat q;
-
-  if (bsp == 0)
-    return;
-  p = *bsp;
-  while (p != NULL)
-    {
-      q = p->next;
-      if (p->old_val != NULL)
-	value_free (p->old_val);
-      free ((PTR)p);
-      p = q;
-    }
-  *bsp = NULL;
-}
-
-/* Return a copy of a bpstat.  Like "bs1 = bs2" but all storage that
-   is part of the bpstat is copied as well.  */
-
-bpstat
-bpstat_copy (bs)
-     bpstat bs;
-{
-  bpstat p = NULL;
-  bpstat tmp;
-  bpstat retval = NULL;
-
-  if (bs == NULL)
-    return bs;
-
-  for (; bs != NULL; bs = bs->next)
-    {
-      tmp = (bpstat) xmalloc (sizeof (*tmp));
-      memcpy (tmp, bs, sizeof (*tmp));
-      if (p == NULL)
-	/* This is the first thing in the chain.  */
-	retval = tmp;
-      else
-	p->next = tmp;
-      p = tmp;
-    }
-  p->next = NULL;
-  return retval;
-}
-
-/* Find the bpstat associated with this breakpoint */
-
-bpstat
-bpstat_find_breakpoint(bsp, breakpoint)
-     bpstat bsp;
-     struct breakpoint *breakpoint;
-{
-  if (bsp == NULL) return NULL;
-
-  for (;bsp != NULL; bsp = bsp->next) {
-    if (bsp->breakpoint_at == breakpoint) return bsp;
-  }
-  return NULL;
-}
-
-/* Find a step_resume breakpoint associated with this bpstat.
-   (If there are multiple step_resume bp's on the list, this function
-   will arbitrarily pick one.)
-
-   It is an error to use this function if BPSTAT doesn't contain a
-   step_resume breakpoint.
-
-   See wait_for_inferior's use of this function.  */
-struct breakpoint *
-bpstat_find_step_resume_breakpoint (bsp)
-  bpstat  bsp;
-{
-  if (bsp == NULL)
-    error ("Internal error (bpstat_find_step_resume_breakpoint)");
-
-  for (; bsp != NULL; bsp = bsp->next)
-    {
-      if ((bsp->breakpoint_at != NULL) &&
-          (bsp->breakpoint_at->type == bp_step_resume))
-        return bsp->breakpoint_at;
-    }
-
-  error ("Internal error (no step_resume breakpoint found)");
-}
-
-
-/* Return the breakpoint number of the first breakpoint we are stopped
-   at.  *BSP upon return is a bpstat which points to the remaining
-   breakpoints stopped at (but which is not guaranteed to be good for
-   anything but further calls to bpstat_num).
-   Return 0 if passed a bpstat which does not indicate any breakpoints.  */
-
-int
-bpstat_num (bsp)
-     bpstat *bsp;
-{
-  struct breakpoint *b;
-
-  if ((*bsp) == NULL)
-    return 0;			/* No more breakpoint values */
-  else
-    {
-      b = (*bsp)->breakpoint_at;
-      *bsp = (*bsp)->next;
-      if (b == NULL)
-	return -1;		/* breakpoint that's been deleted since */
-      else
-        return b->number;	/* We have its number */
-    }
-}
-
-/* Modify BS so that the actions will not be performed.  */
-
-void
-bpstat_clear_actions (bs)
-     bpstat bs;
-{
-  for (; bs != NULL; bs = bs->next)
-    {
-      bs->commands = NULL;
-      if (bs->old_val != NULL)
-	{
-	  value_free (bs->old_val);
-	  bs->old_val = NULL;
-	}
-    }
-}
-
-/* Stub for cleaning up our state if we error-out of a breakpoint command */
-/* ARGSUSED */
-static void
-cleanup_executing_breakpoints (ignore)
-     PTR ignore;
-{
-  executing_breakpoint_commands = 0;
-}
-
-/* Execute all the commands associated with all the breakpoints at this
-   location.  Any of these commands could cause the process to proceed
-   beyond this point, etc.  We look out for such changes by checking
-   the global "breakpoint_proceeded" after each command.  */
-
-void
-bpstat_do_actions (bsp)
-     bpstat *bsp;
-{
-  bpstat bs;
-  struct cleanup *old_chain;
-  struct command_line *cmd;
-
-  /* Avoid endless recursion if a `source' command is contained
-     in bs->commands.  */
-  if (executing_breakpoint_commands)
-    return;
-
-  executing_breakpoint_commands = 1;
-  old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
-
-top:
-  /* Note that (as of this writing), our callers all appear to
-     be passing us the address of global stop_bpstat.  And, if
-     our calls to execute_control_command cause the inferior to
-     proceed, that global (and hence, *bsp) will change.
-
-     We must be careful to not touch *bsp unless the inferior
-     has not proceeded. */
-
-  /* This pointer will iterate over the list of bpstat's. */
-  bs = *bsp;
-
-  breakpoint_proceeded = 0;
-  for (; bs != NULL; bs = bs->next)
-    {
-      cmd = bs->commands;
-      while (cmd != NULL)
-	{
-	  execute_control_command (cmd);
-
-	  if (breakpoint_proceeded)
-	    break;
-	  else
-	    cmd = cmd->next;
-	}
-      if (breakpoint_proceeded)
-	/* The inferior is proceeded by the command; bomb out now.
-	   The bpstat chain has been blown away by wait_for_inferior.
-	   But since execution has stopped again, there is a new bpstat
-	   to look at, so start over.  */
-	goto top;
-      else
-	bs->commands = NULL;
-    }
-
-  executing_breakpoint_commands = 0;
-  discard_cleanups (old_chain);
-}
-
-/* This is the normal print_it function for a bpstat.  In the future,
-   much of this logic could (should?) be moved to bpstat_stop_status,
-   by having it set different print_it functions.
-
-   Current scheme: When we stop, bpstat_print() is called.
-   It loops through the bpstat list of things causing this stop,
-   calling the print_it function for each one. The default
-   print_it function, used for breakpoints, is print_it_normal().
-   (Also see print_it_noop() and print_it_done()).
-   
-   Return values from this routine (used by bpstat_print() to
-   decide what to do):
-   1: Means we printed something, and we do *not* desire that
-      something to be followed by a location.
-   0: Means we printed something, and we *do*  desire that
-      something to be followed by a location.
-   -1: Means we printed nothing.  */
-
-static int
-print_it_normal (bs)
-     bpstat bs;
-{
-  /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
-     which has since been deleted.  */
-  if (bs->breakpoint_at == NULL
-      || (bs->breakpoint_at->type != bp_breakpoint
-          && bs->breakpoint_at->type != bp_catch_load
-          && bs->breakpoint_at->type != bp_catch_unload
-          && bs->breakpoint_at->type != bp_catch_fork
-          && bs->breakpoint_at->type != bp_catch_vfork
-          && bs->breakpoint_at->type != bp_catch_exec
-          && bs->breakpoint_at->type != bp_catch_catch
-          && bs->breakpoint_at->type != bp_catch_throw
-	  && bs->breakpoint_at->type != bp_hardware_breakpoint
-	  && bs->breakpoint_at->type != bp_watchpoint
-	  && bs->breakpoint_at->type != bp_read_watchpoint
-	  && bs->breakpoint_at->type != bp_access_watchpoint
-	  && bs->breakpoint_at->type != bp_hardware_watchpoint))
-    return -1;
-
-  if (ep_is_shlib_catchpoint (bs->breakpoint_at))
-    {
-      annotate_catchpoint (bs->breakpoint_at->number);
-      printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
-      if (bs->breakpoint_at->type == bp_catch_load)
-        printf_filtered ("loaded");
-      else if (bs->breakpoint_at->type == bp_catch_unload)
-        printf_filtered ("unloaded");
-      printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
-      return 0;
-    }
-  else if (bs->breakpoint_at->type == bp_catch_fork ||
-      bs->breakpoint_at->type == bp_catch_vfork)
-    {
-      annotate_catchpoint (bs->breakpoint_at->number);
-      printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
-      if (bs->breakpoint_at->type == bp_catch_fork)
-        printf_filtered ("forked");
-      else if (bs->breakpoint_at->type == bp_catch_vfork)
-        printf_filtered ("vforked");
-      printf_filtered (" process %d), ", bs->breakpoint_at->forked_inferior_pid);
-      return 0;
-    }
-  else if (bs->breakpoint_at->type == bp_catch_exec)
-    {
-      annotate_catchpoint (bs->breakpoint_at->number);
-      printf_filtered ("\nCatchpoint %d (exec'd %s), ",
-                       bs->breakpoint_at->number,
-                       bs->breakpoint_at->exec_pathname);
-      return 0;
-    }
- else if (bs->breakpoint_at->type == bp_catch_catch)
-    {
-      if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH))
-        {
-          annotate_catchpoint (bs->breakpoint_at->number);
-          printf_filtered ("\nCatchpoint %d (exception caught), ", bs->breakpoint_at->number);
-          printf_filtered ("throw location ");
-          if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
-                printf_filtered ("%s:%d",
-                                 CURRENT_EXCEPTION_THROW_FILE,
-                                 CURRENT_EXCEPTION_THROW_LINE);
-          else
-            printf_filtered ("unknown");
-          
-          printf_filtered (", catch location ");
-          if (CURRENT_EXCEPTION_CATCH_PC  && CURRENT_EXCEPTION_CATCH_LINE)
-            printf_filtered ("%s:%d",
-                             CURRENT_EXCEPTION_CATCH_FILE,
-                             CURRENT_EXCEPTION_CATCH_LINE);
-          else
-            printf_filtered ("unknown");
-          
-          printf_filtered ("\n");
-          return 1;   /* don't bother to print location frame info */ 
-        }
-      else
-        {
-          return -1;  /* really throw, some other bpstat will handle it */
-        }
-    }
-  else if (bs->breakpoint_at->type == bp_catch_throw)
-    {
-      if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW))
-        {
-          annotate_catchpoint (bs->breakpoint_at->number);
-          printf_filtered ("\nCatchpoint %d (exception thrown), ", bs->breakpoint_at->number);
-          printf_filtered ("throw location ");
-          if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
-                printf_filtered ("%s:%d",
-                                 CURRENT_EXCEPTION_THROW_FILE,
-                                 CURRENT_EXCEPTION_THROW_LINE);
-          else
-            printf_filtered ("unknown");
-          
-          printf_filtered (", catch location ");
-          if (CURRENT_EXCEPTION_CATCH_PC  && CURRENT_EXCEPTION_CATCH_LINE)
-            printf_filtered ("%s:%d",
-                             CURRENT_EXCEPTION_CATCH_FILE,
-                             CURRENT_EXCEPTION_CATCH_LINE);
-          else
-            printf_filtered ("unknown");
-          
-          printf_filtered ("\n");
-          return 1;   /* don't bother to print location frame info */ 
-        }
-      else
-        {
-          return -1;  /* really catch, some other bpstat willhandle it */
-        }
-    }
-
-  else if (bs->breakpoint_at->type == bp_breakpoint ||
-      bs->breakpoint_at->type == bp_hardware_breakpoint)
-    {
-      /* I think the user probably only wants to see one breakpoint
-	 number, not all of them.  */
-      annotate_breakpoint (bs->breakpoint_at->number);
-      printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number);
-      return 0;
-    }
-  else if ((bs->old_val != NULL) &&
-	(bs->breakpoint_at->type == bp_watchpoint ||
-	 bs->breakpoint_at->type == bp_access_watchpoint ||
-	 bs->breakpoint_at->type == bp_hardware_watchpoint))
-    {
-      annotate_watchpoint (bs->breakpoint_at->number);
-      mention (bs->breakpoint_at);
-      printf_filtered ("\nOld value = ");
-      value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default);
-      printf_filtered ("\nNew value = ");
-      value_print (bs->breakpoint_at->val, gdb_stdout, 0,
-		   Val_pretty_default);
-      printf_filtered ("\n");
-      value_free (bs->old_val);
-      bs->old_val = NULL;
-      /* More than one watchpoint may have been triggered.  */
-      return -1;
-    }
-  else if (bs->breakpoint_at->type == bp_access_watchpoint ||
-	   bs->breakpoint_at->type == bp_read_watchpoint)
-    {
-      mention (bs->breakpoint_at);
-      printf_filtered ("\nValue = ");
-      value_print (bs->breakpoint_at->val, gdb_stdout, 0,
-                   Val_pretty_default);
-      printf_filtered ("\n");
-      return -1;
-    }
-  /* We can't deal with it.  Maybe another member of the bpstat chain can.  */
-  return -1;
-}
-
-/* Print a message indicating what happened.
-   This is called from normal_stop().
-   The input to this routine is the head of the bpstat list - a list
-   of the eventpoints that caused this stop.
-   This routine calls the "print_it" routine(s) associated
-   with these eventpoints. This will print (for example)
-   the "Breakpoint n," part of the output.
-   The return value of this routine is one of:
-
-   -1: Means we printed nothing
-   0: Means we printed something, and expect subsequent
-      code to print the location. An example is 
-      "Breakpoint 1, " which should be followed by
-      the location.
-   1 : Means we printed something, but there is no need
-       to also print the location part of the message.
-       An example is the catch/throw messages, which
-       don't require a location appended to the end.  */ 
-
-int
-bpstat_print (bs)
-     bpstat bs;
-{
-  int val;
-  
-  if (bs == NULL)
-    return -1;
-
-  val = (*bs->print_it) (bs);
-  if (val >= 0)
-    return val;
-  
-  /* Maybe another breakpoint in the chain caused us to stop.
-     (Currently all watchpoints go on the bpstat whether hit or
-     not.  That probably could (should) be changed, provided care is taken
-     with respect to bpstat_explains_signal).  */
-  if (bs->next)
-    return bpstat_print (bs->next);
-
-  /* We reached the end of the chain without printing anything.  */
-  return -1;
-}
-
-/* Evaluate the expression EXP and return 1 if value is zero.
-   This is used inside a catch_errors to evaluate the breakpoint condition. 
-   The argument is a "struct expression *" that has been cast to char * to 
-   make it pass through catch_errors.  */
-
-static int
-breakpoint_cond_eval (exp)
-     PTR exp;
-{
-  value_ptr mark = value_mark ();
-  int i = !value_true (evaluate_expression ((struct expression *)exp));
-  value_free_to_mark (mark);
-  return i;
-}
-
-/* Allocate a new bpstat and chain it to the current one.  */
-
-static bpstat
-bpstat_alloc (b, cbs)
-     register struct breakpoint *b;
-     bpstat cbs;			/* Current "bs" value */
-{
-  bpstat bs;
-
-  bs = (bpstat) xmalloc (sizeof (*bs));
-  cbs->next = bs;
-  bs->breakpoint_at = b;
-  /* If the condition is false, etc., don't do the commands.  */
-  bs->commands = NULL;
-  bs->old_val = NULL;
-  bs->print_it = print_it_normal;
-  return bs;
-}
-
-/* Possible return values for watchpoint_check (this can't be an enum
-   because of check_errors).  */
-/* The watchpoint has been deleted.  */
-#define WP_DELETED 1
-/* The value has changed.  */
-#define WP_VALUE_CHANGED 2
-/* The value has not changed.  */
-#define WP_VALUE_NOT_CHANGED 3
-
-#define BP_TEMPFLAG 1
-#define BP_HARDWAREFLAG 2
-
-/* Check watchpoint condition.  */
-
-static int
-watchpoint_check (p)
-     PTR p;
-{
-  bpstat bs = (bpstat) p;
-  struct breakpoint *b;
-  struct frame_info *fr;
-  int within_current_scope;
-
-  b = bs->breakpoint_at;
-
-  if (b->exp_valid_block == NULL)
-    within_current_scope = 1;
-  else
-    {
-      /* There is no current frame at this moment.  If we're going to have
-	 any chance of handling watchpoints on local variables, we'll need
-	 the frame chain (so we can determine if we're in scope).  */
-      reinit_frame_cache();
-      fr = find_frame_addr_in_frame_chain (b->watchpoint_frame);
-      within_current_scope = (fr != NULL);
-      if (within_current_scope)
-	/* If we end up stopping, the current frame will get selected
-	   in normal_stop.  So this call to select_frame won't affect
-	   the user.  */
-	select_frame (fr, -1);
-    }
-      
-  if (within_current_scope)
-    {
-      /* We use value_{,free_to_}mark because it could be a
-         *long* time before we return to the command level and
-	 call free_all_values.  We can't call free_all_values because
-	 we might be in the middle of evaluating a function call.  */
-
-      value_ptr mark = value_mark ();
-      value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp);
-      if (!value_equal (b->val, new_val))
-	{
-	  release_value (new_val);
-	  value_free_to_mark (mark);
-	  bs->old_val = b->val;
-	  b->val = new_val;
-	  /* We will stop here */
-	  return WP_VALUE_CHANGED;
-	}
-      else
-	{
-	  /* Nothing changed, don't do anything.  */
-	  value_free_to_mark (mark);
-	  /* We won't stop here */
-	  return WP_VALUE_NOT_CHANGED;
-	}
-    }
-  else
-    {
-      /* This seems like the only logical thing to do because
-	 if we temporarily ignored the watchpoint, then when
-	 we reenter the block in which it is valid it contains
-	 garbage (in the case of a function, it may have two
-	 garbage values, one before and one after the prologue).
-	 So we can't even detect the first assignment to it and
-	 watch after that (since the garbage may or may not equal
-	 the first value assigned).  */
-      printf_filtered ("\
-Watchpoint %d deleted because the program has left the block in\n\
-which its expression is valid.\n", bs->breakpoint_at->number);
-      if (b->related_breakpoint)
-	b->related_breakpoint->disposition = del_at_next_stop;
-      b->disposition = del_at_next_stop;
-
-      return WP_DELETED;
-    }
-}
-
-/* This is used when everything which needs to be printed has
-   already been printed.  But we still want to print the frame.  */
-
-/* Background: When we stop, bpstat_print() is called.
-   It loops through the bpstat list of things causing this stop,
-   calling the print_it function for each one. The default
-   print_it function, used for breakpoints, is print_it_normal().
-   Also see print_it_noop() and print_it_done() are the other 
-   two possibilities. See comments in bpstat_print() and
-   in header of print_it_normal() for more detail.  */
-
-static int
-print_it_done (bs)
-     bpstat bs;
-{
-  return 0;
-}
-
-/* This is used when nothing should be printed for this bpstat entry.  */
-/* Background: When we stop, bpstat_print() is called.
-   It loops through the bpstat list of things causing this stop,
-   calling the print_it function for each one. The default
-   print_it function, used for breakpoints, is print_it_normal().
-   Also see print_it_noop() and print_it_done() are the other 
-   two possibilities. See comments in bpstat_print() and
-   in header of print_it_normal() for more detail.  */
-
-static int
-print_it_noop (bs)
-     bpstat bs;
-{
-  return -1;
-}
-
-/* Get a bpstat associated with having just stopped at address *PC
-   and frame address CORE_ADDRESS.  Update *PC to point at the
-   breakpoint (if we hit a breakpoint).  NOT_A_BREAKPOINT is nonzero
-   if this is known to not be a real breakpoint (it could still be a
-   watchpoint, though).  */
-
-/* Determine whether we stopped at a breakpoint, etc, or whether we
-   don't understand this stop.  Result is a chain of bpstat's such that:
-
-	if we don't understand the stop, the result is a null pointer.
-
-	if we understand why we stopped, the result is not null.
-
-	Each element of the chain refers to a particular breakpoint or
-	watchpoint at which we have stopped.  (We may have stopped for
-	several reasons concurrently.)
-
-	Each element of the chain has valid next, breakpoint_at,
-	commands, FIXME??? fields.  */
-
-bpstat
-bpstat_stop_status (pc, not_a_breakpoint)
-     CORE_ADDR *pc;
-     int not_a_breakpoint;
-{
-  register struct breakpoint *b, *temp;
-  CORE_ADDR bp_addr;
-  /* True if we've hit a breakpoint (as opposed to a watchpoint).  */
-  int real_breakpoint = 0;
-  /* Root of the chain of bpstat's */
-  struct bpstats root_bs[1];
-  /* Pointer to the last thing in the chain currently.  */
-  bpstat bs = root_bs;
-  static char message1[] =
-            "Error evaluating expression for watchpoint %d\n";
-  char message[sizeof (message1) + 30 /* slop */];
-
-  /* Get the address where the breakpoint would have been.  */
-  bp_addr = *pc - DECR_PC_AFTER_BREAK;
-
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    {
-      if (b->enable == disabled
-	  || b->enable == shlib_disabled
-          || b->enable == call_disabled)
-	continue;
-
-      if (b->type != bp_watchpoint
-	  && b->type != bp_hardware_watchpoint
-          && b->type != bp_read_watchpoint
-          && b->type != bp_access_watchpoint
-	  && b->type != bp_hardware_breakpoint
-          && b->type != bp_catch_fork
-          && b->type != bp_catch_vfork
-          && b->type != bp_catch_exec
-          && b->type != bp_catch_catch
-          && b->type != bp_catch_throw)         /* a non-watchpoint bp */
-	if (b->address != bp_addr ||		/* address doesn't match or */
-	    (overlay_debugging &&		/* overlay doesn't match */
-	     section_is_overlay (b->section) &&
-	     !section_is_mapped (b->section)))
-	  continue;
-
-      if (b->type == bp_hardware_breakpoint
-	  && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK))
-	continue;
-
-      if (b->type != bp_watchpoint
-	  && b->type != bp_hardware_watchpoint
-	  && b->type != bp_read_watchpoint
-	  && b->type != bp_access_watchpoint
-	  && not_a_breakpoint)
-	continue;
-
-      /* Is this a catchpoint of a load or unload?  If so, did we
-         get a load or unload of the specified library?  If not,
-         ignore it. */
-      if ((b->type == bp_catch_load)
-#if defined(SOLIB_HAVE_LOAD_EVENT)
-          && (!SOLIB_HAVE_LOAD_EVENT(inferior_pid)
-              || ((b->dll_pathname != NULL)
-                  && (strcmp (b->dll_pathname, SOLIB_LOADED_LIBRARY_PATHNAME(inferior_pid)) != 0)))
-#endif
-		  )
-        continue;
- 
-      if ((b->type == bp_catch_unload)
-#if defined(SOLIB_HAVE_UNLOAD_EVENT)
-          && (!SOLIB_HAVE_UNLOAD_EVENT(inferior_pid)
-              || ((b->dll_pathname != NULL)
-                  && (strcmp (b->dll_pathname, SOLIB_UNLOADED_LIBRARY_PATHNAME(inferior_pid)) != 0)))
-#endif
-	  )
-        continue;
- 
-      if ((b->type == bp_catch_fork)
-          && ! target_has_forked (inferior_pid, &b->forked_inferior_pid))
-          continue;
- 
-      if ((b->type == bp_catch_vfork)
-          && ! target_has_vforked (inferior_pid, &b->forked_inferior_pid))
-          continue;
- 
-      if ((b->type == bp_catch_exec)
-	  && ! target_has_execd (inferior_pid, &b->exec_pathname))
-	continue;
-
-      if (ep_is_exception_catchpoint (b) &&
-          !(current_exception_event = target_get_current_exception_event ()))
-        continue;
-
-      /* Come here if it's a watchpoint, or if the break address matches */
-
-      bs = bpstat_alloc (b, bs);	/* Alloc a bpstat to explain stop */
-
-      /* Watchpoints may change this, if not found to have triggered. */
-      bs->stop = 1;
-      bs->print = 1;
-
-      sprintf (message, message1, b->number);
-      if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint)
-	{
-	  switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
-	    {
-	    case WP_DELETED:
-	      /* We've already printed what needs to be printed.  */
-	      bs->print_it = print_it_done;
-	      /* Stop.  */
-	      break;
-	    case WP_VALUE_CHANGED:
-	      /* Stop.  */
-	      ++(b->hit_count);
-	      break;
-	    case WP_VALUE_NOT_CHANGED:
-	      /* Don't stop.  */
-	      bs->print_it = print_it_noop;
-	      bs->stop = 0;
-	      /* Don't consider this a hit.  */
-	      --(b->hit_count);
-	      continue;
-	    default:
-	      /* Can't happen.  */
-	      /* FALLTHROUGH */
-	    case 0:
-	      /* Error from catch_errors.  */
-	      printf_filtered ("Watchpoint %d deleted.\n", b->number);
-	      if (b->related_breakpoint)
-		b->related_breakpoint->disposition = del_at_next_stop;
-	      b->disposition = del_at_next_stop;
-	      /* We've already printed what needs to be printed.  */
-	      bs->print_it = print_it_done;
-
-	      /* Stop.  */
-	      break;
-	    }
-	}
-      else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint)
-        {
-	  CORE_ADDR addr;
-	  value_ptr v;
-          int found = 0;
-
-	  addr = target_stopped_data_address();
-	  if (addr == 0) continue;
-          for (v = b->val_chain; v; v = v->next)
-            {
-              if (v->lval == lval_memory)
-                {
-                  CORE_ADDR vaddr;
-
-                  vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
-	          if (addr == vaddr)
-	            found = 1;
-                }
-            }
-	  if (found) 
-	    switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
-   	      {
-                case WP_DELETED:
-                  /* We've already printed what needs to be printed.  */
-                  bs->print_it = print_it_done;
-                  /* Stop.  */
-                  break;
-                case WP_VALUE_CHANGED:
-                case WP_VALUE_NOT_CHANGED:
-                  /* Stop.  */
-		  ++(b->hit_count);
-                  break;
-                default:
-                  /* Can't happen.  */
-                case 0:
-                  /* Error from catch_errors.  */
-                  printf_filtered ("Watchpoint %d deleted.\n", b->number);
-		  if (b->related_breakpoint)
-		    b->related_breakpoint->disposition = del_at_next_stop;
-		  b->disposition = del_at_next_stop;
-                  /* We've already printed what needs to be printed.  */
-                  bs->print_it = print_it_done;
-                  break;
-	      }
-        }
-      else 
-        {
-          /* By definition, an encountered breakpoint is a triggered
-             breakpoint. */
-          ++(b->hit_count);
-
-          if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
-             real_breakpoint = 1;
-        }
-
-      if (b->frame && b->frame != (get_current_frame ())->frame &&
-          (b->type == bp_step_resume && 
-           (INNER_THAN (get_current_frame ()->frame, b->frame))))
-	bs->stop = 0;
-      else
-	{
-	  int value_is_zero = 0;
-
-	  if (b->cond)
-	    {
-	      /* Need to select the frame, with all that implies
-		 so that the conditions will have the right context.  */
-	      select_frame (get_current_frame (), 0);
-	      value_is_zero
-		= catch_errors (breakpoint_cond_eval, (b->cond),
-				"Error in testing breakpoint condition:\n",
-				RETURN_MASK_ALL);
-				/* FIXME-someday, should give breakpoint # */
-	      free_all_values ();
-	    }
-	  if (b->cond && value_is_zero)
-	    {
-	      bs->stop = 0;
-	      /* Don't consider this a hit.  */
-	      --(b->hit_count);
-	    }
-	  else if (b->ignore_count > 0)
-	    {
-	      b->ignore_count--;
-	      bs->stop = 0;
-	    }
-	  else
-	    {
-	      /* We will stop here */
-	      if (b->disposition == disable)
-		b->enable = disabled;
-	      bs->commands = b->commands;
-	      if (b->silent)
-		bs->print = 0;
-	      if (bs->commands &&
-		  (STREQ ("silent", bs->commands->line) ||
-		   (xdb_commands && STREQ ("Q", bs->commands->line))))
-		{
-		  bs->commands = bs->commands->next;
-		  bs->print = 0;
-		}
-	    }
-	}
-      /* Print nothing for this entry if we dont stop or if we dont print.  */
-      if (bs->stop == 0 || bs->print == 0)
-	bs->print_it = print_it_noop;
-    }
-
-  bs->next = NULL;		/* Terminate the chain */
-  bs = root_bs->next;		/* Re-grab the head of the chain */
-
-  if ((DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) && bs)
-    {
-      if (real_breakpoint)
-	{
-	  *pc = bp_addr;
-#if defined (SHIFT_INST_REGS)
-	  SHIFT_INST_REGS();
-#else /* No SHIFT_INST_REGS.  */
-	  write_pc (bp_addr);
-#endif /* No SHIFT_INST_REGS.  */
-	}
-    }
-
-  /* The value of a hardware watchpoint hasn't changed, but the
-     intermediate memory locations we are watching may have.  */
-  if (bs && ! bs->stop &&
-      (bs->breakpoint_at->type == bp_hardware_watchpoint ||
-       bs->breakpoint_at->type == bp_read_watchpoint ||
-       bs->breakpoint_at->type == bp_access_watchpoint))
-    {
-      remove_breakpoints ();
-      insert_breakpoints ();
-    }
-  return bs;
-}
-
-/* Tell what to do about this bpstat.  */
-struct bpstat_what
-bpstat_what (bs)
-     bpstat bs;
-{
-  /* Classify each bpstat as one of the following.  */
-  enum class {
-    /* This bpstat element has no effect on the main_action.  */
-    no_effect = 0,
-
-    /* There was a watchpoint, stop but don't print.  */
-    wp_silent,
-
-    /* There was a watchpoint, stop and print.  */
-    wp_noisy,
-
-    /* There was a breakpoint but we're not stopping.  */
-    bp_nostop,
-
-    /* There was a breakpoint, stop but don't print.  */
-    bp_silent,
-
-    /* There was a breakpoint, stop and print.  */
-    bp_noisy,
-
-    /* We hit the longjmp breakpoint.  */
-    long_jump,
-
-    /* We hit the longjmp_resume breakpoint.  */
-    long_resume,
-
-    /* We hit the step_resume breakpoint.  */
-    step_resume,
-
-    /* We hit the through_sigtramp breakpoint.  */
-    through_sig,
-
-    /* We hit the shared library event breakpoint.  */
-    shlib_event,
-
-    /* We caught a shared library event.  */
-    catch_shlib_event,
- 
-    /* This is just used to count how many enums there are.  */
-    class_last
-    };
-
-  /* Here is the table which drives this routine.  So that we can
-     format it pretty, we define some abbreviations for the
-     enum bpstat_what codes.  */
-#define kc BPSTAT_WHAT_KEEP_CHECKING
-#define ss BPSTAT_WHAT_STOP_SILENT
-#define sn BPSTAT_WHAT_STOP_NOISY
-#define sgl BPSTAT_WHAT_SINGLE
-#define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
-#define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
-#define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
-#define sr BPSTAT_WHAT_STEP_RESUME
-#define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
-#define shl BPSTAT_WHAT_CHECK_SHLIBS
-#define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
-
-/* "Can't happen."  Might want to print an error message.
-   abort() is not out of the question, but chances are GDB is just
-   a bit confused, not unusable.  */
-#define err BPSTAT_WHAT_STOP_NOISY
-
-  /* Given an old action and a class, come up with a new action.  */
-  /* One interesting property of this table is that wp_silent is the same
-     as bp_silent and wp_noisy is the same as bp_noisy.  That is because
-     after stopping, the check for whether to step over a breakpoint
-     (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
-     reference to how we stopped.  We retain separate wp_silent and bp_silent
-     codes in case we want to change that someday.  */
-
-  /* step_resume entries: a step resume breakpoint overrides another
-     breakpoint of signal handling (see comment in wait_for_inferior
-     at first IN_SIGTRAMP where we set the step_resume breakpoint).  */
-  /* We handle the through_sigtramp_breakpoint the same way; having both
-     one of those and a step_resume_breakpoint is probably very rare (?).  */
-
-  static const enum bpstat_what_main_action
-    table[(int)class_last][(int)BPSTAT_WHAT_LAST] =
-      {
-	/*                              old action */
-        /*       kc    ss    sn    sgl    slr   clr    clrs   sr    ts   shl   shlr
-         */
-/*no_effect*/   {kc,   ss,   sn,   sgl,   slr,  clr,   clrs,  sr,   ts,  shl,  shlr},
-/*wp_silent*/   {ss,   ss,   sn,   ss,    ss,   ss,    ss,    sr,   ts,  shl,  shlr},
-/*wp_noisy*/    {sn,   sn,   sn,   sn,    sn,   sn,    sn,    sr,   ts,  shl,  shlr},
-/*bp_nostop*/   {sgl,  ss,   sn,   sgl,   slr,  clrs,  clrs,  sr,   ts,  shl,  shlr},
-/*bp_silent*/   {ss,   ss,   sn,   ss,    ss,   ss,    ss,    sr,   ts,  shl,  shlr},
-/*bp_noisy*/    {sn,   sn,   sn,   sn,    sn,   sn,    sn,    sr,   ts,  shl,  shlr},
-/*long_jump*/   {slr,  ss,   sn,   slr,   err,  err,   err,   sr,   ts,  shl,  shlr},
-/*long_resume*/ {clr,  ss,   sn,   clrs,  err,  err,   err,   sr,   ts,  shl,  shlr},
-/*step_resume*/ {sr,   sr,   sr,   sr,    sr,   sr,    sr,    sr,   ts,  shl,  shlr},
-/*through_sig*/ {ts,   ts,   ts,   ts,    ts,   ts,    ts,    ts,   ts,  shl,  shlr},
-/*shlib*/       {shl,  shl,  shl,  shl,   shl,  shl,   shl,   shl,  ts,  shl,  shlr},
-/*catch_shlib*/ {shlr, shlr, shlr, shlr,  shlr, shlr,  shlr,  shlr, ts,  shlr, shlr}
-              };
-
-#undef kc
-#undef ss
-#undef sn
-#undef sgl
-#undef slr
-#undef clr
-#undef clrs
-#undef err
-#undef sr
-#undef ts
-#undef shl
-#undef shlr
-  enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING;
-  struct bpstat_what retval;
-
-  retval.call_dummy = 0;
-  for (; bs != NULL; bs = bs->next)
-    {
-      enum class bs_class = no_effect;
-      if (bs->breakpoint_at == NULL)
-	/* I suspect this can happen if it was a momentary breakpoint
-	   which has since been deleted.  */
-	continue;
-      switch (bs->breakpoint_at->type)
-	{
-	case bp_none:
-	  continue;
-
-	case bp_breakpoint:
-	case bp_hardware_breakpoint:
-	case bp_until:
-	case bp_finish:
-	  if (bs->stop)
-	    {
-	      if (bs->print)
-		bs_class = bp_noisy;
-	      else
-		bs_class = bp_silent;
-	    }
-	  else
-	    bs_class = bp_nostop;
-	  break;
-	case bp_watchpoint:
-	case bp_hardware_watchpoint:
-	case bp_read_watchpoint:
-	case bp_access_watchpoint:
-	  if (bs->stop)
-	    {
-	      if (bs->print)
-		bs_class = wp_noisy;
-	      else
-		bs_class = wp_silent;
-	    }
-	  else
-	    /* There was a watchpoint, but we're not stopping.  This requires
-	       no further action.  */
-	    bs_class = no_effect;
-	  break;
-	case bp_longjmp:
-	  bs_class = long_jump;
-	  break;
-	case bp_longjmp_resume:
-	  bs_class = long_resume;
-	  break;
-	case bp_step_resume:
-	  if (bs->stop)
-	    {
-	      bs_class = step_resume;
-	    }
-	  else
-	    /* It is for the wrong frame.  */
-	    bs_class = bp_nostop;
-	  break;
-	case bp_through_sigtramp:
-	  bs_class = through_sig;
-	  break;
-	case bp_watchpoint_scope:
-	  bs_class = bp_nostop;
-	  break;
-	case bp_shlib_event:
-	  bs_class = shlib_event;
-	  break;
-        case bp_catch_load:
-        case bp_catch_unload:
-          /* Only if this catchpoint triggered should we cause the
-             step-out-of-dld behaviour.  Otherwise, we ignore this
-             catchpoint.  */
-          if (bs->stop)
-            bs_class = catch_shlib_event;
-          else
-            bs_class = no_effect;
-          break;
-        case bp_catch_fork:
-        case bp_catch_vfork:
-	case bp_catch_exec:
-          if (bs->stop)
-            {
-              if (bs->print)
-                bs_class = bp_noisy;
-              else
-                bs_class = bp_silent;
-            }
-          else
-            /* There was a catchpoint, but we're not stopping.  This requires
-               no further action.  */
-            bs_class = no_effect;
-          break;
-        case bp_catch_catch:
-          if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH)
-            bs_class = bp_nostop;
-          else if (bs->stop)
-            bs_class = bs->print ? bp_noisy : bp_silent;
-          break;
-        case bp_catch_throw:
-          if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW)
-            bs_class = bp_nostop;
-          else if (bs->stop)
-            bs_class = bs->print ? bp_noisy : bp_silent;
-          break;
-	case bp_call_dummy:
-	  /* Make sure the action is stop (silent or noisy), so infrun.c
-	     pops the dummy frame.  */
-	  bs_class = bp_silent;
-	  retval.call_dummy = 1;
-	  break;
-	}
-      current_action = table[(int)bs_class][(int)current_action];
-    }
-  retval.main_action = current_action;
-  return retval;
-}
-
-/* Nonzero if we should step constantly (e.g. watchpoints on machines
-   without hardware support).  This isn't related to a specific bpstat,
-   just to things like whether watchpoints are set.  */
-
-int 
-bpstat_should_step ()
-{
-  struct breakpoint *b;
-  ALL_BREAKPOINTS (b)
-    if (b->enable == enabled && b->type == bp_watchpoint)
-      return 1;
-  return 0;
-}
-
-/* Nonzero if there are enabled hardware watchpoints. */
-int
-bpstat_have_active_hw_watchpoints ()
-{
-  struct breakpoint *b;
-  ALL_BREAKPOINTS (b)
-    if ((b->enable == enabled) &&
-        (b->inserted) &&
-        ((b->type == bp_hardware_watchpoint) ||
-         (b->type == bp_read_watchpoint) ||
-         (b->type == bp_access_watchpoint)))
-      return 1;
-  return 0;
-}
-
-
-/* Given a bpstat that records zero or more triggered eventpoints, this
-   function returns another bpstat which contains only the catchpoints
-   on that first list, if any. */
-void
-bpstat_get_triggered_catchpoints (ep_list, cp_list)
-  bpstat  ep_list;
-  bpstat *  cp_list;
-{
-  struct bpstats  root_bs[1];
-  bpstat  bs = root_bs;
-  struct breakpoint *  ep;
-  char *  dll_pathname;
- 
-  bpstat_clear (cp_list);
-  root_bs->next = NULL;
- 
-  for (; ep_list != NULL; ep_list = ep_list->next )
-    {
-      /* Is this eventpoint a catchpoint?  If not, ignore it. */
-      ep = ep_list->breakpoint_at;
-      if (ep == NULL)
-        break;
-      if ((ep->type != bp_catch_load) && 
-          (ep->type != bp_catch_unload) &&
-          (ep->type != bp_catch_catch) &&
-          (ep->type != bp_catch_throw))   /* pai: (temp) ADD fork/vfork here!!  */
-        continue;
- 
-      /* Yes; add it to the list. */
-      bs = bpstat_alloc (ep, bs);
-      *bs = *ep_list;
-      bs->next = NULL;
-      bs = root_bs->next;
- 
-#if defined(SOLIB_ADD)
-      /* Also, for each triggered catchpoint, tag it with the name of
-         the library that caused this trigger.  (We copy the name now,
-         because it's only guaranteed to be available NOW, when the
-         catchpoint triggers.  Clients who may wish to know the name
-         later must get it from the catchpoint itself.) */
-      if (ep->triggered_dll_pathname != NULL)
-        free (ep->triggered_dll_pathname);
-      if (ep->type == bp_catch_load)
-        dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid);
-      else
-        dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid);
-#else
-      dll_pathname = NULL;
-#endif
-      if (dll_pathname)
-	{
-	  ep->triggered_dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
-	  strcpy (ep->triggered_dll_pathname, dll_pathname);
-	}
-      else
-	ep->triggered_dll_pathname = NULL;
-    }
- 
-  *cp_list = bs;
-}
-
-/* Print information on breakpoint number BNUM, or -1 if all.
-   If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
-   is nonzero, process only watchpoints.  */
-
-typedef struct {
-  enum bptype  type;
-  char *  description;
-} ep_type_description_t;
-
-static void
-breakpoint_1 (bnum, allflag)
-     int bnum;
-     int allflag;
-{
-  register struct breakpoint *b;
-  register struct command_line *l;
-  register struct symbol *sym;
-  CORE_ADDR last_addr = (CORE_ADDR)-1;
-  int found_a_breakpoint = 0;
-  static ep_type_description_t  bptypes[] =
-  {
-    {bp_none,                "?deleted?"},
-    {bp_breakpoint,          "breakpoint"},
-    {bp_hardware_breakpoint, "hw breakpoint"},
-    {bp_until,               "until"},
-    {bp_finish,              "finish"},
-    {bp_watchpoint,          "watchpoint"},
-    {bp_hardware_watchpoint, "hw watchpoint"},
-    {bp_read_watchpoint,     "read watchpoint"},
-    {bp_access_watchpoint,   "acc watchpoint"},
-    {bp_longjmp,             "longjmp"},
-    {bp_longjmp_resume,      "longjmp resume"},
-    {bp_step_resume,         "step resume"},
-    {bp_through_sigtramp,    "sigtramp"},
-    {bp_watchpoint_scope,    "watchpoint scope"},
-    {bp_call_dummy,          "call dummy"},
-    {bp_shlib_event,         "shlib events"},
-    {bp_catch_load,          "catch load"},
-    {bp_catch_unload,        "catch unload"},
-    {bp_catch_fork,          "catch fork"},
-    {bp_catch_vfork,         "catch vfork"},
-    {bp_catch_exec,          "catch exec"},
-    {bp_catch_catch,         "catch catch"},
-    {bp_catch_throw,         "catch throw"}
-   };
-
-  static char *bpdisps[] = {"del", "dstp", "dis", "keep"};
-  static char bpenables[] = "nyn";
-  char wrap_indent[80];
-
-  ALL_BREAKPOINTS (b)
-    if (bnum == -1
-	|| bnum == b->number)
-      {
-/*  We only print out user settable breakpoints unless the allflag is set. */
-	if (!allflag
-	    && b->type != bp_breakpoint
-            && b->type != bp_catch_load
-            && b->type != bp_catch_unload
-            && b->type != bp_catch_fork
-            && b->type != bp_catch_vfork
-            && b->type != bp_catch_exec
-	    && b->type != bp_catch_catch
-	    && b->type != bp_catch_throw
-	    && b->type != bp_hardware_breakpoint
-	    && b->type != bp_watchpoint
-	    && b->type != bp_read_watchpoint
-	    && b->type != bp_access_watchpoint
-	    && b->type != bp_hardware_watchpoint)
-	  continue;
-
-	if (!found_a_breakpoint++)
-	  {
-            annotate_breakpoints_headers ();
-  
-            annotate_field (0);
-            printf_filtered ("Num ");
-            annotate_field (1);
-            printf_filtered ("Type           ");
-            annotate_field (2);
-            printf_filtered ("Disp ");
-            annotate_field (3);
-            printf_filtered ("Enb ");
-            if (addressprint)
-              {
-                annotate_field (4);
-                printf_filtered ("Address    ");
-              }
-            annotate_field (5);
-            printf_filtered ("What\n");
-  
-            annotate_breakpoints_table ();
-          }
-  
-        annotate_record ();
-        annotate_field (0);
-        printf_filtered ("%-3d ", b->number);
-        annotate_field (1);
-        if ((int)b->type > (sizeof(bptypes)/sizeof(bptypes[0])))
-          error ("bptypes table does not describe type #%d.", (int)b->type);
-        if ((int)b->type != bptypes[(int)b->type].type)
-          error ("bptypes table does not describe type #%d?", (int)b->type);
-        printf_filtered ("%-14s ", bptypes[(int)b->type].description);
-        annotate_field (2);
-        printf_filtered ("%-4s ", bpdisps[(int)b->disposition]);
-        annotate_field (3);
-	printf_filtered ("%-3c ", bpenables[(int)b->enable]);
-
-	strcpy (wrap_indent, "                           ");
-	if (addressprint)
-	  strcat (wrap_indent, "           ");
-	switch (b->type)
-	  {
-	  case bp_watchpoint:
-	  case bp_hardware_watchpoint:
-	  case bp_read_watchpoint:
-	  case bp_access_watchpoint:
-	    /* Field 4, the address, is omitted (which makes the columns
-	       not line up too nicely with the headers, but the effect
-	       is relatively readable).  */
-	    annotate_field (5);
-	    print_expression (b->exp, gdb_stdout);
-	    break;
- 
-          case bp_catch_load:
-          case bp_catch_unload:
-            /* Field 4, the address, is omitted (which makes the columns
-               not line up too nicely with the headers, but the effect
-               is relatively readable).  */
-            annotate_field (5);
-            if (b->dll_pathname == NULL)
-              printf_filtered ("<any library> ");
-            else
-              printf_filtered ("library \"%s\" ", b->dll_pathname);
-            break;
-
-          case bp_catch_fork:
-          case bp_catch_vfork:
-	    /* Field 4, the address, is omitted (which makes the columns
-	       not line up too nicely with the headers, but the effect
-	       is relatively readable).  */
-	    annotate_field (5);
-	    if (b->forked_inferior_pid != 0)
-	      printf_filtered ("process %d ", b->forked_inferior_pid);
-            break;
-
-          case bp_catch_exec:
-	    /* Field 4, the address, is omitted (which makes the columns
-	       not line up too nicely with the headers, but the effect
-	       is relatively readable).  */
-	    annotate_field (5);
-	    if (b->exec_pathname != NULL)
-	      printf_filtered ("program \"%s\" ", b->exec_pathname);
-            break;
-          case bp_catch_catch:
-	    /* Field 4, the address, is omitted (which makes the columns
-	       not line up too nicely with the headers, but the effect
-	       is relatively readable).  */
-	    annotate_field (5);
-            printf_filtered ("exception catch ");
-            break;
-          case bp_catch_throw:
-	    /* Field 4, the address, is omitted (which makes the columns
-	       not line up too nicely with the headers, but the effect
-	       is relatively readable).  */
-	    annotate_field (5);
-            printf_filtered ("exception throw ");
-            break;
-
-	  case bp_breakpoint:
-	  case bp_hardware_breakpoint:
-	  case bp_until:
-	  case bp_finish:
-	  case bp_longjmp:
-	  case bp_longjmp_resume:
-	  case bp_step_resume:
-	  case bp_through_sigtramp:
-	  case bp_watchpoint_scope:
-	  case bp_call_dummy:
-	  case bp_shlib_event:
-	    if (addressprint)
-	      {
-	        annotate_field (4);
-		/* FIXME-32x64: need a print_address_numeric with
-                   field width */
-		printf_filtered
-		  ("%s ",
-		   local_hex_string_custom
-		   ((unsigned long) b->address, "08l"));
-	      }
-
-	    annotate_field (5);
-
-	    last_addr = b->address;
-	    if (b->source_file)
-	      {
-		sym = find_pc_sect_function (b->address, b->section);
-		if (sym)
-		  {
-		    fputs_filtered ("in ", gdb_stdout);
-		    fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
-		    wrap_here (wrap_indent);
-		    fputs_filtered (" at ", gdb_stdout);
-		  }
-		fputs_filtered (b->source_file, gdb_stdout);
-		printf_filtered (":%d", b->line_number);
-	      }
-	    else
-	      print_address_symbolic (b->address, gdb_stdout, demangle, " ");
-	    break;
-	  }
-
-        if (b->thread != -1)
-            printf_filtered (" thread %d", b->thread );
-
-	printf_filtered ("\n");
-
-	if (b->frame)
-	  {
-            annotate_field (6);
-
-	    printf_filtered ("\tstop only in stack frame at ");
-	    print_address_numeric (b->frame, 1, gdb_stdout);
-	    printf_filtered ("\n");
-	  }
-
-	if (b->cond)
-	  {
-            annotate_field (7);
-
-	    printf_filtered ("\tstop only if ");
-	    print_expression (b->cond, gdb_stdout);
-	    printf_filtered ("\n");
-	  }
-
-	if (b->thread != -1)
-	  {
-	    /* FIXME should make an annotation for this */
-	    printf_filtered ("\tstop only in thread %d\n", b->thread);
-	  }
-
-        if (show_breakpoint_hit_counts && b->hit_count)
-	  {
-	    /* FIXME should make an annotation for this */
-            if (ep_is_catchpoint (b))
-              printf_filtered ("\tcatchpoint");
-            else
-              printf_filtered ("\tbreakpoint");
-            printf_filtered (" already hit %d time%s\n",
-                             b->hit_count, (b->hit_count == 1 ? "" : "s"));
-	  }
-
-	if (b->ignore_count)
-	  {
-            annotate_field (8);
-
-	    printf_filtered ("\tignore next %d hits\n", b->ignore_count);
-	  }
-
-	if ((l = b->commands))
-	  {
-            annotate_field (9);
-
-	    while (l)
-	      {
-		print_command_line (l, 4);
-		l = l->next;
-	      }
-	  }
-      }
-
-  if (!found_a_breakpoint)
-    {
-      if (bnum == -1)
-        printf_filtered ("No breakpoints or watchpoints.\n");
-      else
-        printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum);
-    }
-  else
-    /* Compare against (CORE_ADDR)-1 in case some compiler decides
-       that a comparison of an unsigned with -1 is always false.  */
-    if (last_addr != (CORE_ADDR)-1)
-      set_next_address (last_addr);
-
-  annotate_breakpoints_table_end ();
-}
-
-/* ARGSUSED */
-static void
-breakpoints_info (bnum_exp, from_tty)
-     char *bnum_exp;
-     int from_tty;
-{
-  int bnum = -1;
-
-  if (bnum_exp)
-    bnum = parse_and_eval_address (bnum_exp);
-
-  breakpoint_1 (bnum, 0);
-}
-
-#if MAINTENANCE_CMDS
-
-/* ARGSUSED */
-void
-maintenance_info_breakpoints (bnum_exp, from_tty)
-     char *bnum_exp;
-     int from_tty;
-{
-  int bnum = -1;
-
-  if (bnum_exp)
-    bnum = parse_and_eval_address (bnum_exp);
-
-  breakpoint_1 (bnum, 1);
-}
-
-#endif
-
-/* Print a message describing any breakpoints set at PC.  */
-
-static void
-describe_other_breakpoints (pc, section)
-     CORE_ADDR pc;
-     asection *section;
-{
-  register int others = 0;
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (b->address == pc)
-      if (overlay_debugging == 0 ||
-	  b->section == section)
-	others++;
-  if (others > 0)
-    {
-      printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
-      ALL_BREAKPOINTS (b)
-	if (b->address == pc)
-	  if (overlay_debugging == 0 ||
-	      b->section == section)
-	    {
-	      others--;
-	      printf_filtered
-		("%d%s%s ",
-		 b->number,
-		 ((b->enable == disabled || b->enable == shlib_disabled || b->enable == call_disabled)
-		  ? " (disabled)" : ""),
-		 (others > 1) ? "," : ((others == 1) ? " and" : ""));
-	    }
-      printf_filtered ("also set at pc ");
-      print_address_numeric (pc, 1, gdb_stdout);
-      printf_filtered (".\n");
-    }
-}
-
-/* Set the default place to put a breakpoint
-   for the `break' command with no arguments.  */
-
-void
-set_default_breakpoint (valid, addr, symtab, line)
-     int valid;
-     CORE_ADDR addr;
-     struct symtab *symtab;
-     int line;
-{
-  default_breakpoint_valid = valid;
-  default_breakpoint_address = addr;
-  default_breakpoint_symtab = symtab;
-  default_breakpoint_line = line;
-}
-
-/* Rescan breakpoints at address ADDRESS,
-   marking the first one as "first" and any others as "duplicates".
-   This is so that the bpt instruction is only inserted once.  */
-
-static void
-check_duplicates (address, section)
-     CORE_ADDR address;
-     asection *section;
-{
-  register struct breakpoint *b;
-  register int count = 0;
-
-  if (address == 0)		/* Watchpoints are uninteresting */
-    return;
-
-  ALL_BREAKPOINTS (b)
-    if (b->enable != disabled
-	&& b->enable != shlib_disabled
-	&& b->enable != call_disabled
-	&& b->address == address
-	&& (overlay_debugging == 0 || b->section == section))
-      {
-	count++;
-	b->duplicate = count > 1;
-      }
-}
-
-/* Low level routine to set a breakpoint.
-   Takes as args the three things that every breakpoint must have.
-   Returns the breakpoint object so caller can set other things.
-   Does not set the breakpoint number!
-   Does not print anything.
-
-   ==> This routine should not be called if there is a chance of later
-   error(); otherwise it leaves a bogus breakpoint on the chain.  Validate
-   your arguments BEFORE calling this routine!  */
-
-struct breakpoint *
-set_raw_breakpoint (sal)
-     struct symtab_and_line sal;
-{
-  register struct breakpoint *b, *b1;
-
-  b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint));
-  memset (b, 0, sizeof (*b));
-  b->address = sal.pc;
-  if (sal.symtab == NULL)
-    b->source_file = NULL;
-  else
-    b->source_file = savestring (sal.symtab->filename,
-				 strlen (sal.symtab->filename));
-  b->section = sal.section;
-  b->language = current_language->la_language;
-  b->input_radix = input_radix;
-  b->thread = -1;
-  b->line_number = sal.line;
-  b->enable = enabled;
-  b->next = 0;
-  b->silent = 0;
-  b->ignore_count = 0;
-  b->commands = NULL;
-  b->frame = 0;
-  b->dll_pathname = NULL;
-  b->triggered_dll_pathname = NULL;
-  b->forked_inferior_pid = 0;
-  b->exec_pathname = NULL;
-
-  /* Add this breakpoint to the end of the chain
-     so that a list of breakpoints will come out in order
-     of increasing numbers.  */
-
-  b1 = breakpoint_chain;
-  if (b1 == 0)
-    breakpoint_chain = b;
-  else
-    {
-      while (b1->next)
-	b1 = b1->next;
-      b1->next = b;
-    }
-
-  check_duplicates (sal.pc, sal.section);
-  breakpoints_changed ();
-
-  return b;
-}
-
-#ifdef GET_LONGJMP_TARGET
-
-static void
-create_longjmp_breakpoint (func_name)
-     char *func_name;
-{
-  struct symtab_and_line sal;
-  struct breakpoint *b;
-
-  INIT_SAL (&sal);	/* initialize to zeroes */
-  if (func_name != NULL)
-    {
-      struct minimal_symbol *m;
-
-      m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL);
-      if (m)
-	sal.pc = SYMBOL_VALUE_ADDRESS (m);
-      else
-	return;
-    }
-  sal.section = find_pc_overlay (sal.pc);
-  b = set_raw_breakpoint (sal);
-  if (!b) return;
-
-  b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume;
-  b->disposition = donttouch;
-  b->enable = disabled;
-  b->silent = 1;
-  if (func_name)
-    b->addr_string = strsave(func_name);
-  b->number = internal_breakpoint_number--;
-}
-
-#endif	/* #ifdef GET_LONGJMP_TARGET */
-
-/* Call this routine when stepping and nexting to enable a breakpoint if we do
-   a longjmp().  When we hit that breakpoint, call
-   set_longjmp_resume_breakpoint() to figure out where we are going. */
-
-void
-enable_longjmp_breakpoint()
-{
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (b->type == bp_longjmp)
-      {
-	b->enable = enabled;
-	check_duplicates (b->address, b->section);
-      }
-}
-
-void
-disable_longjmp_breakpoint()
-{
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (   b->type == bp_longjmp
-	|| b->type == bp_longjmp_resume)
-      {
-	b->enable = disabled;
-	check_duplicates (b->address, b->section);
-      }
-}
-
-#ifdef SOLIB_ADD
-void
-remove_solib_event_breakpoints ()
-{
-  register struct breakpoint *b, *temp;
-
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    if (b->type == bp_shlib_event)
-      delete_breakpoint (b);
-}
-
-void
-create_solib_event_breakpoint (address)
-     CORE_ADDR address;
-{
-  struct breakpoint *b;
-  struct symtab_and_line sal;
-
-  INIT_SAL (&sal);	/* initialize to zeroes */
-  sal.pc = address;
-  sal.section = find_pc_overlay (sal.pc);
-  b = set_raw_breakpoint (sal);
-  b->number = internal_breakpoint_number--;
-  b->disposition = donttouch;
-  b->type = bp_shlib_event;
-}
-
-void
-disable_breakpoints_in_shlibs (silent)
-     int silent;
-{
-  struct breakpoint *  b;
-  int  disabled_shlib_breaks = 0;
-
-  /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
-  ALL_BREAKPOINTS (b)
-    {
-#if defined (PC_SOLIB)
-      if (((b->type == bp_breakpoint) ||
-           (b->type == bp_hardware_breakpoint)) &&
-          (b->enable != shlib_disabled) &&
-          (b->enable != call_disabled) &&
-          ! b->duplicate &&
-          PC_SOLIB (b->address))
-        {
-          b->enable = shlib_disabled;
-	  if (!silent)
-	    {
-	      if (!disabled_shlib_breaks)
-		{
-		  target_terminal_ours_for_output ();
-		  printf_filtered ("Temporarily disabling shared library breakpoints:\n");
-		}
-	      disabled_shlib_breaks = 1;
-	      printf_filtered ("%d ", b->number);
-	    }
-        }
-#endif
-    }
-  if (disabled_shlib_breaks && !silent)
-    printf_filtered ("\n");
-}
-
-/* Try to reenable any breakpoints in shared libraries.  */
-void
-re_enable_breakpoints_in_shlibs ()
-{
-  struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (b->enable == shlib_disabled)
-      {
-	char buf[1];
-
-	/* Do not reenable the breakpoint if the shared library
-	   is still not mapped in.  */
-	if (target_read_memory (b->address, buf, 1) == 0)
-	  b->enable = enabled;
-      }
-}
-
-#endif
-
-static void
-create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string, bp_kind)
-  char *  hookname;
-  int  tempflag;
-  char *  dll_pathname;
-  char *  cond_string;
-  enum bptype  bp_kind;
-{
-  struct breakpoint *  b;
-  struct symtabs_and_lines sals;
-  struct symtab_and_line  sal;
-  struct cleanup *  old_chain;
-  struct cleanup *  canonical_strings_chain = NULL;
-  int  i;
-  char *  addr_start = hookname;
-  char *  addr_end = NULL;
-  char **  canonical = (char **) NULL;
-  int  thread = -1;  /* All threads. */
- 
-  /* Set a breakpoint on the specified hook. */
-  sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical);
-  addr_end = hookname;
- 
-  if (sals.nelts == 0)
-    {
-      warning ("Unable to set a breakpoint on dynamic linker callback.");
-      warning ("Suggest linking with /opt/langtools/lib/end.o.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      return;
-    }
-  if (sals.nelts != 1)
-    {
-      warning ("Unable to set a unique breakpoint on dynamic linker callback.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      return;
-    }
-
-  /* Make sure that all storage allocated in decode_line_1 gets freed in case
-     the following errors out.  */
-  old_chain = make_cleanup (free, sals.sals);
-  if (canonical != (char **)NULL)
-    {
-      make_cleanup (free, canonical);
-      canonical_strings_chain = make_cleanup (null_cleanup, 0);
-      if (canonical[0] != NULL)
-        make_cleanup (free, canonical[0]);
-    }
- 
-  resolve_sal_pc (&sals.sals[0]);
- 
-  /* Remove the canonical strings from the cleanup, they are needed below.  */
-  if (canonical != (char **)NULL)
-    discard_cleanups (canonical_strings_chain);
- 
-  b = set_raw_breakpoint (sals.sals[0]);
-  set_breakpoint_count (breakpoint_count + 1);
-  b->number = breakpoint_count;
-  b->cond = NULL;
-  b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
-  b->thread = thread;
- 
-  if (canonical != (char **)NULL && canonical[0] != NULL)
-    b->addr_string = canonical[0];
-  else if (addr_start)
-    b->addr_string = savestring (addr_start, addr_end - addr_start);
- 
-  b->enable = enabled;
-  b->disposition = tempflag ? del : donttouch;
- 
-  if (dll_pathname == NULL)
-    b->dll_pathname = NULL;
-  else
-    {
-      b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
-      strcpy (b->dll_pathname, dll_pathname);
-    }
-  b->type = bp_kind;
- 
-  mention (b);
-  do_cleanups (old_chain);
-}
-
-void
-create_solib_load_event_breakpoint (hookname, tempflag, dll_pathname, cond_string)
-  char *  hookname;
-  int  tempflag;
-  char *  dll_pathname;
-  char *  cond_string;
-{
-  create_solib_load_unload_event_breakpoint (hookname,
-                                             tempflag,
-                                             dll_pathname,
-                                             cond_string,
-                                             bp_catch_load);
-}
-
-void
-create_solib_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string)
-  char *  hookname;
-  int  tempflag;
-  char *  dll_pathname;
-  char *  cond_string;
-{
-  create_solib_load_unload_event_breakpoint (hookname,
-                                             tempflag,
-                                             dll_pathname,
-                                             cond_string,
-                                             bp_catch_unload);
-}
-
-static void
-create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind)
-  int  tempflag;
-  char *  cond_string;
-  enum bptype  bp_kind;
-{
-  struct symtab_and_line  sal;
-  struct breakpoint *  b;
-  int  thread = -1;  /* All threads. */
- 
-  INIT_SAL(&sal);
-  sal.pc = 0;
-  sal.symtab = NULL;
-  sal.line = 0;
- 
-  b = set_raw_breakpoint (sal);
-  set_breakpoint_count (breakpoint_count + 1);
-  b->number = breakpoint_count;
-  b->cond = NULL;
-  b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
-  b->thread = thread;
-  b->addr_string = NULL;
-  b->enable = enabled;
-  b->disposition = tempflag ? del : donttouch;
-  b->forked_inferior_pid = 0;
- 
-  b->type = bp_kind;
- 
-  mention (b);
-}
-
-void
-create_fork_event_catchpoint (tempflag, cond_string)
-  int  tempflag;
-  char *  cond_string;
-{
-  create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
-}
- 
-void
-create_vfork_event_catchpoint (tempflag, cond_string)
-  int  tempflag;
-  char *  cond_string;
-{
-  create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
-}
-
-void
-create_exec_event_catchpoint (tempflag, cond_string)
-  int  tempflag;
-  char *  cond_string;
-{
-  struct symtab_and_line  sal;
-  struct breakpoint *  b;
-  int  thread = -1;  /* All threads. */
-
-  INIT_SAL(&sal);
-  sal.pc = 0;
-  sal.symtab = NULL;
-  sal.line = 0;
-
-  b = set_raw_breakpoint (sal);
-  set_breakpoint_count (breakpoint_count + 1);
-  b->number = breakpoint_count;
-  b->cond = NULL;
-  b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
-  b->thread = thread;
-  b->addr_string = NULL;
-  b->enable = enabled;
-  b->disposition = tempflag ? del : donttouch;
-
-  b->type = bp_catch_exec;
-
-  mention (b);
-}
-
-static int
-hw_breakpoint_used_count()
-{
-  register struct breakpoint *b;
-  int i = 0;
-
-  ALL_BREAKPOINTS (b)
-    {
-      if (b->type == bp_hardware_breakpoint && b->enable == enabled)
-	i++;
-    }
-
-  return i;
-}
-
-static int
-hw_watchpoint_used_count(type, other_type_used)
-    enum bptype type;
-    int *other_type_used;
-{
-  register struct breakpoint *b;
-  int i = 0;
-
-  *other_type_used = 0;
-  ALL_BREAKPOINTS (b)
-    {
-      if (b->enable == enabled)
-	{
-          if (b->type == type) i++;
-          else if ((b->type == bp_hardware_watchpoint ||
-	       b->type == bp_read_watchpoint ||
-	       b->type == bp_access_watchpoint)
-	       && b->enable == enabled)
-	    *other_type_used = 1;
-        }
-    }
-  return i;
-}
-
-/* Call this after hitting the longjmp() breakpoint.  Use this to set a new
-   breakpoint at the target of the jmp_buf.
-
-   FIXME - This ought to be done by setting a temporary breakpoint that gets
-   deleted automatically... */
-
-void
-set_longjmp_resume_breakpoint(pc, frame)
-     CORE_ADDR pc;
-     struct frame_info *frame;
-{
-  register struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    if (b->type == bp_longjmp_resume)
-      {
-	b->address = pc;
-	b->enable = enabled;
-	if (frame != NULL)
-	  b->frame = frame->frame;
-	else
-	  b->frame = 0;
-	check_duplicates (b->address, b->section);
-	return;
-      }
-}
-
-void
-disable_watchpoints_before_interactive_call_start ()
-{
-  struct breakpoint *  b;
-
-  ALL_BREAKPOINTS (b)
-    {
-      if (((b->type == bp_watchpoint)
-           || (b->type == bp_hardware_watchpoint)
-           || (b->type == bp_read_watchpoint)
-           || (b->type == bp_access_watchpoint)
-           || ep_is_exception_catchpoint (b))
-          && (b->enable == enabled))
-        {
-          b->enable = call_disabled;
-          check_duplicates (b->address, b->section);
-        }
-    }
-}
-
-void
-enable_watchpoints_after_interactive_call_stop ()
-{
-  struct breakpoint *  b;
-
-  ALL_BREAKPOINTS (b)
-    {
-      if (((b->type == bp_watchpoint)
-           || (b->type == bp_hardware_watchpoint)
-           || (b->type == bp_read_watchpoint)
-           || (b->type == bp_access_watchpoint)
-           || ep_is_exception_catchpoint (b))
-          && (b->enable == call_disabled))
-        {
-          b->enable = enabled;
-          check_duplicates (b->address, b->section);
-        }
-    }
-}
-
-
-/* Set a breakpoint that will evaporate an end of command
-   at address specified by SAL.
-   Restrict it to frame FRAME if FRAME is nonzero.  */
-
-struct breakpoint *
-set_momentary_breakpoint (sal, frame, type)
-     struct symtab_and_line sal;
-     struct frame_info *frame;
-     enum bptype type;
-{
-  register struct breakpoint *b;
-  b = set_raw_breakpoint (sal);
-  b->type = type;
-  b->enable = enabled;
-  b->disposition = donttouch;
-  b->frame = (frame ? frame->frame : 0);
-
-  /* If we're debugging a multi-threaded program, then we
-     want momentary breakpoints to be active in only a 
-     single thread of control.  */
-  if (in_thread_list (inferior_pid))
-    b->thread = pid_to_thread_id (inferior_pid);
-
-  return b;
-}
-
-
-/* Tell the user we have just set a breakpoint B.  */
-
-static void
-mention (b)
-     struct breakpoint *b;
-{
-  int say_where = 0;
-
-  /* FIXME: This is misplaced; mention() is called by things (like hitting a
-     watchpoint) other than breakpoint creation.  It should be possible to
-     clean this up and at the same time replace the random calls to
-     breakpoint_changed with this hook, as has already been done for
-     delete_breakpoint_hook and so on.  */
-  if (create_breakpoint_hook)
-    create_breakpoint_hook (b);
-
-  switch (b->type)
-    {
-    case bp_none:
-      printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number);
-      break;
-    case bp_watchpoint:
-      printf_filtered ("Watchpoint %d: ", b->number);
-      print_expression (b->exp, gdb_stdout);
-      break;
-    case bp_hardware_watchpoint:
-      printf_filtered ("Hardware watchpoint %d: ", b->number);
-      print_expression (b->exp, gdb_stdout);
-      break;
-    case bp_read_watchpoint:
-      printf_filtered ("Hardware read watchpoint %d: ", b->number);
-      print_expression (b->exp, gdb_stdout);
-      break;
-    case bp_access_watchpoint:
-      printf_filtered ("Hardware access (read/write) watchpoint %d: ",b->number);
-      print_expression (b->exp, gdb_stdout);
-      break;
-    case bp_breakpoint:
-      printf_filtered ("Breakpoint %d", b->number);
-      say_where = 1;
-      break;
-    case bp_hardware_breakpoint:
-      printf_filtered ("Hardware assisted breakpoint %d", b->number);
-      say_where = 1;
-      break;
-    case bp_catch_load:
-    case bp_catch_unload:
-      printf_filtered ("Catchpoint %d (%s %s)",
-                       b->number,
-                       (b->type == bp_catch_load) ? "load" : "unload",
-                       (b->dll_pathname != NULL) ? b->dll_pathname : "<any library>");
-      break;
-    case bp_catch_fork:
-    case bp_catch_vfork:
-      printf_filtered ("Catchpoint %d (%s)",
-                       b->number,
-                       (b->type == bp_catch_fork) ? "fork" : "vfork");
-      break;
-    case bp_catch_exec:
-      printf_filtered ("Catchpoint %d (exec)",
-                       b->number);
-      break;
-    case bp_catch_catch:
-    case bp_catch_throw:
-      printf_filtered ("Catchpoint %d (%s)",
-                       b->number,
-                       (b->type == bp_catch_catch) ? "catch" : "throw");
-      break;
-
-    case bp_until:
-    case bp_finish:
-    case bp_longjmp:
-    case bp_longjmp_resume:
-    case bp_step_resume:
-    case bp_through_sigtramp:
-    case bp_call_dummy:
-    case bp_watchpoint_scope:
-    case bp_shlib_event:
-      break;
-    }
-  if (say_where)
-    {
-      if (addressprint || b->source_file == NULL)
-	{
-	  printf_filtered (" at ");
-	  print_address_numeric (b->address, 1, gdb_stdout);
-	}
-      if (b->source_file)
-	printf_filtered (": file %s, line %d.",
-			 b->source_file, b->line_number);
-      TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, b, 1));
-      TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos));
-    }
-  printf_filtered ("\n");
-}
-
-
-/* Set a breakpoint according to ARG (function, linenum or *address)
-   flag: first bit  : 0 non-temporary, 1 temporary.
-	 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
-
-static void
-break_command_1 (arg, flag, from_tty)
-     char *arg;
-     int flag, from_tty;
-{
-  int tempflag, hardwareflag;
-  struct symtabs_and_lines sals;
-  struct symtab_and_line sal;
-  register struct expression *cond = 0;
-  register struct breakpoint *b;
-
-  /* Pointers in arg to the start, and one past the end, of the condition.  */
-  char *cond_start = NULL;
-  char *cond_end = NULL;
-  /* Pointers in arg to the start, and one past the end,
-     of the address part.  */
-  char *addr_start = NULL;
-  char *addr_end = NULL;
-  struct cleanup *old_chain;
-  struct cleanup *canonical_strings_chain = NULL;
-  char **canonical = (char **)NULL;
-  int i;
-  int thread;
-
-  hardwareflag = flag & BP_HARDWAREFLAG;
-  tempflag = flag & BP_TEMPFLAG;
-
-  sals.sals = NULL;
-  sals.nelts = 0;
-
-  INIT_SAL (&sal);	/* initialize to zeroes */
-
-  /* If no arg given, or if first arg is 'if ', use the default breakpoint. */
-
-  if (!arg || (arg[0] == 'i' && arg[1] == 'f' 
-	       && (arg[2] == ' ' || arg[2] == '\t')))
-    {
-      if (default_breakpoint_valid)
-	{
-	  sals.sals = (struct symtab_and_line *) 
-	    xmalloc (sizeof (struct symtab_and_line));
-	  sal.pc = default_breakpoint_address;
-	  sal.line = default_breakpoint_line;
-	  sal.symtab = default_breakpoint_symtab;
-	  sal.section  = find_pc_overlay (sal.pc);
-	  sals.sals[0] = sal;
-	  sals.nelts = 1;
-	}
-      else
-	error ("No default breakpoint address now.");
-    }
-  else
-    {
-      addr_start = arg;
-
-      /* 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 (default_breakpoint_valid
-	  && (!current_source_symtab
-	      || (arg && (*arg == '+' || *arg == '-'))))
-	sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
-			      default_breakpoint_line, &canonical);
-      else
-	sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical);
-
-      addr_end = arg;
-    }
-  
-  if (! sals.nelts) 
-    return;
-
-  /* Make sure that all storage allocated in decode_line_1 gets freed in case
-     the following `for' loop errors out.  */
-  old_chain = make_cleanup (free, sals.sals);
-  if (canonical != (char **)NULL)
-    {
-      make_cleanup (free, canonical);
-      canonical_strings_chain = make_cleanup (null_cleanup, 0);
-      for (i = 0; i < sals.nelts; i++)
-	{
-	  if (canonical[i] != NULL)
-	    make_cleanup (free, canonical[i]);
-	}
-    }
-
-  thread = -1;			/* No specific thread yet */
-
-  /* Resolve all line numbers to PC's, and verify that conditions
-     can be parsed, before setting any breakpoints.  */
-  for (i = 0; i < sals.nelts; i++)
-    {
-      char *tok, *end_tok;
-      int toklen;
-
-      resolve_sal_pc (&sals.sals[i]);
-
-      /* It's possible for the PC to be nonzero, but still an illegal
-         value on some targets.
-
-         For example, on HP-UX if you start gdb, and before running the
-         inferior you try to set a breakpoint on a shared library function
-         "foo" where the inferior doesn't call "foo" directly but does
-         pass its address to another function call, then we do find a
-         minimal symbol for the "foo", but it's address is invalid.
-         (Appears to be an index into a table that the loader sets up
-         when the inferior is run.)
-
-         Give the target a chance to bless sals.sals[i].pc before we
-         try to make a breakpoint for it. */
-      if (PC_REQUIRES_RUN_BEFORE_USE(sals.sals[i].pc))
-        {
-          error ("Cannot break on %s without a running program.", addr_start);
-        }
-      
-      tok = arg;
-
-      while (tok && *tok)
-	{
-	  while (*tok == ' ' || *tok == '\t')
-	    tok++;
-
-	  end_tok = tok;
-
-	  while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
-	    end_tok++;
-
-	  toklen = end_tok - tok;
-
-	  if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
-	    {
-	      tok = cond_start = end_tok + 1;
-	      cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
-	      cond_end = tok;
-	    }
-	  else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
-	    {
-	      char *tmptok;
-
-	      tok = end_tok + 1;
-	      tmptok = tok;
-	      thread = strtol (tok, &tok, 0);
-	      if (tok == tmptok)
-		error ("Junk after thread keyword.");
-	      if (!valid_thread_id (thread))
-		error ("Unknown thread %d\n", thread);
-	    }
-	  else
-	    error ("Junk at end of arguments.");
-	}
-    }
-  if (hardwareflag)
-    {
-      int i, target_resources_ok;
-
-      i = hw_breakpoint_used_count ();  
-      target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT (
-		bp_hardware_breakpoint, i + sals.nelts, 0);
-      if (target_resources_ok == 0)
-	error ("No hardware breakpoint support in the target.");
-      else if (target_resources_ok < 0)
-        error ("Hardware breakpoints used exceeds limit.");
-    }
-
-  /* Remove the canonical strings from the cleanup, they are needed below.  */
-  if (canonical != (char **)NULL)
-    discard_cleanups (canonical_strings_chain);
-
-  /* Now set all the breakpoints.  */
-  for (i = 0; i < sals.nelts; i++)
-    {
-      sal = sals.sals[i];
-
-      if (from_tty)
-	describe_other_breakpoints (sal.pc, sal.section);
-
-      b = set_raw_breakpoint (sal);
-      set_breakpoint_count (breakpoint_count + 1);
-      b->number = breakpoint_count;
-      b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint;
-      b->cond = cond;
-      b->thread = thread;
-
-      /* If a canonical line spec is needed use that instead of the
-	 command string.  */
-      if (canonical != (char **)NULL && canonical[i] != NULL)
-	b->addr_string = canonical[i];
-      else if (addr_start)
-	b->addr_string = savestring (addr_start, addr_end - addr_start);
-      if (cond_start)
-	b->cond_string = savestring (cond_start, cond_end - cond_start);
-				     
-      b->enable = enabled;
-      b->disposition = tempflag ? del : donttouch;
-      mention (b);
-    }
-
-  if (sals.nelts > 1)
-    {
-      printf_filtered ("Multiple breakpoints were set.\n");
-      printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
-    }
-  do_cleanups (old_chain);
-}
-
-static void
-break_at_finish_at_depth_command_1 (arg, flag, from_tty)
-     char *arg;
-     int flag;
-     int from_tty;
-{
-  struct frame_info *frame;
-  CORE_ADDR low, high, selected_pc = 0;
-  char *extra_args, *level_arg, *addr_string;
-  int extra_args_len = 0, if_arg = 0;
-
-  if (!arg ||
-      (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
-    {
-
-      if (default_breakpoint_valid)
-	{
-	  if (selected_frame)
-	    {
-	      selected_pc = selected_frame->pc;
-	      if (arg)
-		if_arg = 1;
-	    }
-	  else
-	    error ("No selected frame.");
-	}
-      else
-	error ("No default breakpoint address now.");
-    }
-  else
-    {
-      extra_args = strchr (arg, ' ');
-      if (extra_args)
-	{
-	  extra_args++;
-	  extra_args_len = strlen (extra_args);
-	  level_arg = (char *) xmalloc (extra_args - arg);
-	  strncpy (level_arg, arg, extra_args - arg - 1);
-	  level_arg[extra_args - arg - 1] = '\0';
-	}
-      else
-	{
-	  level_arg = (char *) xmalloc (strlen (arg) + 1);
-	  strcpy (level_arg, arg);
-	}
-
-      frame = parse_frame_specification (level_arg);
-      if (frame)
-	selected_pc = frame->pc;
-      else
-	selected_pc = 0;
-    }
-  if (if_arg)
-    {
-      extra_args = arg;
-      extra_args_len = strlen (arg); 
-    }
-
-  if (selected_pc)
-    {
-      if (find_pc_partial_function(selected_pc, (char **)NULL, &low, &high))
-	{
-	  addr_string = (char *) xmalloc (26 + extra_args_len);
-	  if (extra_args_len)
-	    sprintf (addr_string, "*0x%x %s", high, extra_args);
-	  else
-	    sprintf (addr_string, "*0x%x", high);
-	  break_command_1 (addr_string, flag, from_tty);
-	  free (addr_string);
-	}
-      else
-	error ("No function contains the specified address");
-    }
-  else
-    error ("Unable to set breakpoint at procedure exit");
-}
-
-
-static void
-break_at_finish_command_1 (arg, flag, from_tty)
-     char *arg;
-     int flag;
-     int from_tty;
-{
-  char *addr_string, *break_string, *beg_addr_string;
-  CORE_ADDR low, high;
-  struct symtabs_and_lines sals;
-  struct symtab_and_line sal;
-  struct cleanup *old_chain;
-  char *extra_args;
-  int extra_args_len = 0;
-  int i, if_arg = 0;
-
-  if (!arg ||
-      (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
-    {
-      if (default_breakpoint_valid)
-	{
-	  if (selected_frame)
-	    {
-	      addr_string = (char *) xmalloc (15);
-	      sprintf (addr_string, "*0x%x", selected_frame->pc);
-	      if (arg)
-		if_arg = 1;
-	    }
-	  else
-	    error ("No selected frame.");
-	}
-      else
-	error ("No default breakpoint address now.");
-    }
-  else
-    {
-      addr_string = (char *) xmalloc (strlen (arg) + 1);
-      strcpy (addr_string, arg);
-    }
-
-  if (if_arg)
-    {
-      extra_args = arg;
-      extra_args_len = strlen (arg); 
-    }
-  else
-    if (arg)
-      {
-	/* get the stuff after the function name or address */
-	extra_args = strchr (arg, ' ');
-        if (extra_args)
-	  {
-	    extra_args++;
-	    extra_args_len = strlen (extra_args);
-          }
-      }
-
-  sals.sals = NULL;
-  sals.nelts = 0;
-
-  beg_addr_string = addr_string;  
-  sals = decode_line_1 (&addr_string, 1, (struct symtab *)NULL, 0, 
-			(char ***)NULL);
-
-  free (beg_addr_string);
-  old_chain = make_cleanup (free, sals.sals);
-  for (i = 0; (i < sals.nelts); i++)
-    {
-      sal = sals.sals[i];
-      if (find_pc_partial_function (sal.pc, (char **)NULL, &low, &high))
-	{
-	  break_string = (char *) xmalloc (extra_args_len + 26);
-	  if (extra_args_len)
-	    sprintf (break_string, "*0x%x %s", high, extra_args);
-	  else
-	    sprintf (break_string, "*0x%x", high);
-	  break_command_1 (break_string, flag, from_tty);
-	  free(break_string);
-	}
-      else
-	error ("No function contains the specified address");
-    }
-  if (sals.nelts > 1)
-    {
-      printf_filtered ("Multiple breakpoints were set.\n");
-      printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
-    }
-  do_cleanups(old_chain);
-}
-
-
-/* Helper function for break_command_1 and disassemble_command.  */
-
-void
-resolve_sal_pc (sal)
-     struct symtab_and_line *sal;
-{
-  CORE_ADDR pc;
-
-  if (sal->pc == 0 && sal->symtab != NULL)
-    {
-      if (!find_line_pc (sal->symtab, sal->line, &pc))
-	error ("No line %d in file \"%s\".",
-	       sal->line, sal->symtab->filename);
-      sal->pc = pc;
-    }
-
-  if (sal->section == 0 && sal->symtab != NULL)
-    {
-      struct blockvector *bv;
-      struct block       *b;
-      struct symbol      *sym;
-      int                 index;
-
-      bv  = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab);
-      if (bv != NULL)
-	{
-	  b   = BLOCKVECTOR_BLOCK (bv, index);
-	  sym = block_function (b);
-	  if (sym != NULL)
-	    {
-	      fixup_symbol_section (sym, sal->symtab->objfile);
-	      sal->section = SYMBOL_BFD_SECTION (sym);
-	    }
-	  else
-	    {
-	      /* It really is worthwhile to have the section, so we'll just
-		 have to look harder. This case can be executed if we have 
-		 line numbers but no functions (as can happen in assembly 
-		 source).  */
-
-	      struct minimal_symbol *msym; 
-
-	      msym = lookup_minimal_symbol_by_pc (sal->pc);
-	      if (msym)
-		sal->section = SYMBOL_BFD_SECTION (msym);
-	    }
-	}
-    }
-}
-
-void
-break_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_command_1 (arg, 0, from_tty);
-}
-
-void
-break_at_finish_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_at_finish_command_1 (arg, 0, from_tty);
-}
-
-void
-break_at_finish_at_depth_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_at_finish_at_depth_command_1 (arg, 0, from_tty);
-}
-
-void
-tbreak_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_command_1 (arg, BP_TEMPFLAG, from_tty);
-}
-
-void
-tbreak_at_finish_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
-}
-
-static void
-hbreak_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
-}
-
-static void
-thbreak_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
-}
-
-static void
-stop_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  printf_filtered ("Specify the type of breakpoint to set.\n\
-Usage: stop in <function | address>\n\
-       stop at <line>\n");
-}
-
-static void
-stopin_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  int badInput = 0;
-
-  if (arg == (char *)NULL)
-    badInput = 1;
-  else if (*arg != '*')
-    {
-      char *argptr = arg;
-      int hasColon = 0;
-
-      /* look for a ':'.  If this is a line number specification, then say
-	 it is bad, otherwise, it should be an address or function/method
-	 name */
-      while (*argptr && !hasColon)
-        {
-          hasColon = (*argptr == ':');
-          argptr++;
-        }
-
-      if (hasColon)
-        badInput = (*argptr != ':'); /* Not a class::method */
-      else
-        badInput = isdigit(*arg); /* a simple line number */
-    }
-
-  if (badInput)
-    printf_filtered("Usage: stop in <function | address>\n");
-  else
-    break_command_1 (arg, 0, from_tty);
-}
-
-static void
-stopat_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  int badInput = 0;
-
-  if (arg == (char *)NULL || *arg == '*') /* no line number */
-    badInput = 1;
-  else
-    {
-      char *argptr = arg;
-      int hasColon = 0;
-
-      /* look for a ':'.  If there is a '::' then get out, otherwise
-	 it is probably a line number. */
-      while (*argptr && !hasColon)
-        {
-          hasColon = (*argptr == ':');
-          argptr++;
-        }
-
-      if (hasColon)
-        badInput = (*argptr == ':'); /* we have class::method */
-      else
-        badInput = !isdigit(*arg); /* not a line number */
-    }
-
-  if (badInput)
-    printf_filtered("Usage: stop at <line>\n");
-  else
-    break_command_1 (arg, 0, from_tty);
-}
-
-/* ARGSUSED */
-/* accessflag:  0: watch write, 1: watch read, 2: watch access(read or write) */
-static void
-watch_command_1 (arg, accessflag, from_tty)
-     char *arg;
-     int accessflag;
-     int from_tty;
-{
-  struct breakpoint *b;
-  struct symtab_and_line sal;
-  struct expression *exp;
-  struct block *exp_valid_block;
-  struct value *val, *mark;
-  struct frame_info *frame;
-  struct frame_info *prev_frame = NULL;
-  char *exp_start = NULL;
-  char *exp_end = NULL;
-  char *tok, *end_tok;
-  int toklen;
-  char *cond_start = NULL;
-  char *cond_end = NULL;
-  struct expression *cond = NULL;
-  int i, other_type_used, target_resources_ok = 0;
-  enum bptype bp_type;
-  int mem_cnt = 0;
-
-  INIT_SAL (&sal);	/* initialize to zeroes */
-  
-  /* Parse arguments.  */
-  innermost_block = NULL;
-  exp_start = arg;
-  exp = parse_exp_1 (&arg, 0, 0);
-  exp_end = arg;
-  exp_valid_block = innermost_block;
-  mark = value_mark ();
-  val = evaluate_expression (exp);
-  release_value (val);
-  if (VALUE_LAZY (val))
-    value_fetch_lazy (val);
-
-  tok = arg;
-  while (*tok == ' ' || *tok == '\t')
-    tok++;
-  end_tok = tok;
-
-  while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
-    end_tok++;
-
-  toklen = end_tok - tok;
-  if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
-    {
-      tok = cond_start = end_tok + 1;
-      cond = parse_exp_1 (&tok, 0, 0);
-      cond_end = tok;
-    }
-  if (*tok)
-    error("Junk at end of command.");
-
-  if (accessflag == 1) bp_type = bp_read_watchpoint;
-  else if (accessflag == 2) bp_type = bp_access_watchpoint;
-  else bp_type = bp_hardware_watchpoint;
-
-  mem_cnt = can_use_hardware_watchpoint (val);
-  if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint)
-    error ("Expression cannot be implemented with read/access watchpoint.");
-  if (mem_cnt != 0) { 
-    i = hw_watchpoint_used_count (bp_type, &other_type_used);
-    target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
-		bp_type, i + mem_cnt, other_type_used);
-    if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint)
-      error ("Target does not have this type of hardware watchpoint support.");
-    if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
-      error ("Target resources have been allocated for other types of watchpoints.");
-  }
-
-#if defined(HPUXHPPA)
- /* ??rehrauer: DTS #CHFts23014 notes that on HP-UX if you set a h/w
-     watchpoint before the "run" command, the inferior dies with a e.g.,
-     SIGILL once you start it.  I initially believed this was due to a
-     bad interaction between page protection traps and the initial
-     startup sequence by the dynamic linker.
-
-     However, I tried avoiding that by having HP-UX's implementation of
-     TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid
-     yet, which forced slow watches before a "run" or "attach", and it
-     still fails somewhere in the startup code.
-
-     Until I figure out what's happening, I'm disallowing watches altogether
-     before the "run" or "attach" command.  We'll tell the user they must
-     set watches after getting the program started. */
-  if (! target_has_execution)
-    {
-      warning ("can't do that without a running program; try \"break main\", \"run\" first");
-      return;
-    }
-#endif /* HPUXHPPA */
-  
-  /* Now set up the breakpoint.  */
-  b = set_raw_breakpoint (sal);
-  set_breakpoint_count (breakpoint_count + 1);
-  b->number = breakpoint_count;
-  b->disposition = donttouch;
-  b->exp = exp;
-  b->exp_valid_block = exp_valid_block;
-  b->exp_string = savestring (exp_start, exp_end - exp_start);
-  b->val = val;
-  b->cond = cond;
-  if (cond_start)
-    b->cond_string = savestring (cond_start, cond_end - cond_start);
-  else
-    b->cond_string = 0;
-         
-  frame = block_innermost_frame (exp_valid_block);
-  if (frame)
-    {
-      prev_frame = get_prev_frame (frame);
-      b->watchpoint_frame = frame->frame;
-    }
-  else
-    b->watchpoint_frame = (CORE_ADDR)0;
-
-  if (mem_cnt && target_resources_ok > 0)
-    b->type = bp_type;
-  else
-    b->type = bp_watchpoint;
-
-  /* If the expression is "local", then set up a "watchpoint scope"
-     breakpoint at the point where we've left the scope of the watchpoint
-     expression.  */
-  if (innermost_block)
-    {
-      if (prev_frame)
-	{
-	  struct breakpoint *scope_breakpoint;
-	  struct symtab_and_line scope_sal;
-
-	  INIT_SAL (&scope_sal);	/* initialize to zeroes */
-	  scope_sal.pc      = get_frame_pc (prev_frame);
-	  scope_sal.section = find_pc_overlay (scope_sal.pc);
-
-	  scope_breakpoint = set_raw_breakpoint (scope_sal);
-	  set_breakpoint_count (breakpoint_count + 1);
-	  scope_breakpoint->number = breakpoint_count;
-
-	  scope_breakpoint->type = bp_watchpoint_scope;
-	  scope_breakpoint->enable = enabled;
-
-	  /* Automatically delete the breakpoint when it hits.  */
-	  scope_breakpoint->disposition = del;
-
-	  /* Only break in the proper frame (help with recursion).  */
-	  scope_breakpoint->frame = prev_frame->frame;
-
-	  /* Set the address at which we will stop.  */
-	  scope_breakpoint->address = get_frame_pc (prev_frame);
-
-	  /* The scope breakpoint is related to the watchpoint.  We
-	     will need to act on them together.  */
-	  b->related_breakpoint = scope_breakpoint;
-	}
-    }
-  value_free_to_mark (mark);
-  mention (b);
-}
-
-/* Return count of locations need to be watched and can be handled
-   in hardware.  If the watchpoint can not be handled
-   in hardware return zero.  */
-
-#if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
-#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_size) \
-    ((byte_size) <= (REGISTER_SIZE))
-#endif
-
-static int
-can_use_hardware_watchpoint (v)
-     struct value *v;
-{
-  int found_memory_cnt = 0;
-
-  /* Did the user specifically forbid us to use hardware watchpoints? */
-  if (! can_use_hw_watchpoints)
-    return 0;
-	
-  /* Make sure all the intermediate values are in memory.  Also make sure
-     we found at least one memory expression.  Guards against watch 0x12345,
-     which is meaningless, but could cause errors if one tries to insert a 
-     hardware watchpoint for the constant expression.  */
-  for ( ; v; v = v->next)
-    {
-      if (v->lval == lval_memory)
-	{
-	  if (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (TYPE_LENGTH (VALUE_TYPE (v))))
-	    found_memory_cnt++;
-        }
-      else if (v->lval != not_lval && v->modifiable == 0)
-	return 0;
-    }
-
-  /* The expression itself looks suitable for using a hardware
-     watchpoint, but give the target machine a chance to reject it.  */
-  return found_memory_cnt;
-}
-
-static void watch_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  watch_command_1 (arg, 0, from_tty);
-}
-
-static void rwatch_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  watch_command_1 (arg, 1, from_tty);
-}
-
-static void awatch_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  watch_command_1 (arg, 2, from_tty);
-}
-
-
-/* Helper routine for the until_command routine in infcmd.c.  Here
-   because it uses the mechanisms of breakpoints.  */
-
-/* ARGSUSED */
-void
-until_break_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  struct symtabs_and_lines sals;
-  struct symtab_and_line sal;
-  struct frame_info *prev_frame = get_prev_frame (selected_frame);
-  struct breakpoint *breakpoint;
-  struct cleanup *old_chain;
-
-  clear_proceed_status ();
-
-  /* Set a breakpoint where the user wants it and at return from
-     this function */
-  
-  if (default_breakpoint_valid)
-    sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
-			  default_breakpoint_line, (char ***)NULL);
-  else
-    sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL);
-  
-  if (sals.nelts != 1)
-    error ("Couldn't get information on specified line.");
-  
-  sal = sals.sals[0];
-  free ((PTR)sals.sals);		/* malloc'd, so freed */
-  
-  if (*arg)
-    error ("Junk at end of arguments.");
-  
-  resolve_sal_pc (&sal);
-  
-  breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until);
-  
-  old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
-
-  /* Keep within the current frame */
-  
-  if (prev_frame)
-    {
-      sal = find_pc_line (prev_frame->pc, 0);
-      sal.pc = prev_frame->pc;
-      breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until);
-      make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
-    }
-  
-  proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
-  do_cleanups(old_chain);
-}
-
-#if 0
-/* These aren't used; I don't konw what they were for.  */
-/* Set a breakpoint at the catch clause for NAME.  */
-static int
-catch_breakpoint (name)
-     char *name;
-{
-}
-
-static int
-disable_catch_breakpoint ()
-{
-}
-
-static int
-delete_catch_breakpoint ()
-{
-}
-
-static int
-enable_catch_breakpoint ()
-{
-}
-#endif /* 0 */
-
-struct sal_chain
-{
-  struct sal_chain *next;
-  struct symtab_and_line sal;
-};
-
-/* Not really used -- invocation in handle_gnu_4_16_catch_command
-   had been commented out in the v.4.16 sources, and stays
-   disabled there now because "catch NAME" syntax isn't allowed.
-   pai/1997-07-11 */
-/* This isn't used; I don't know what it was for.  */
-/* For each catch clause identified in ARGS, run FUNCTION
-   with that clause as an argument.  */
-static struct symtabs_and_lines
-map_catch_names (args, function)
-     char *args;
-     int (*function)();
-{
-  register char *p = args;
-  register char *p1;
-  struct symtabs_and_lines sals;
-#if 0
-  struct sal_chain *sal_chain = 0;
-#endif
-
-  if (p == 0)
-    error_no_arg ("one or more catch names");
-
-  sals.nelts = 0;
-  sals.sals = NULL;
-
-  while (*p)
-    {
-      p1 = p;
-      /* Don't swallow conditional part.  */
-      if (p1[0] == 'i' && p1[1] == 'f'
-	  && (p1[2] == ' ' || p1[2] == '\t'))
-	break;
-
-      if (isalpha (*p1))
-	{
-	  p1++;
-	  while (isalnum (*p1) || *p1 == '_' || *p1 == '$')
-	    p1++;
-	}
-
-      if (*p1 && *p1 != ' ' && *p1 != '\t')
-	error ("Arguments must be catch names.");
-
-      *p1 = 0;
-#if 0
-      if (function (p))
-	{
-	  struct sal_chain *next = (struct sal_chain *)
-	    alloca (sizeof (struct sal_chain));
-	  next->next = sal_chain;
-	  next->sal = get_catch_sal (p);
-	  sal_chain = next;
-	  goto win;
-	}
-#endif
-      printf_unfiltered ("No catch clause for exception %s.\n", p);
-#if 0
-    win:
-#endif
-      p = p1;
-      while (*p == ' ' || *p == '\t') p++;
-    }
-}
-
-/* This shares a lot of code with `print_frame_label_vars' from stack.c.  */
-
-static struct symtabs_and_lines
-get_catch_sals (this_level_only)
-     int this_level_only;
-{
-  register struct blockvector *bl;
-  register struct block *block;
-  int index, have_default = 0;
-  CORE_ADDR pc;
-  struct symtabs_and_lines sals;
-  struct sal_chain *sal_chain = 0;
-  char *blocks_searched;
-
-  /* Not sure whether an error message is always the correct response,
-     but it's better than a core dump.  */
-  if (selected_frame == NULL)
-    error ("No selected frame.");
-  block = get_frame_block (selected_frame);
-  pc = selected_frame->pc;
-
-  sals.nelts = 0;
-  sals.sals = NULL;
-
-  if (block == 0)
-    error ("No symbol table info available.\n");
-
-  bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
-  blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
-  memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
-
-  while (block != 0)
-    {
-      CORE_ADDR end = BLOCK_END (block) - 4;
-      int last_index;
-
-      if (bl != blockvector_for_pc (end, &index))
-	error ("blockvector blotch");
-      if (BLOCKVECTOR_BLOCK (bl, index) != block)
-	error ("blockvector botch");
-      last_index = BLOCKVECTOR_NBLOCKS (bl);
-      index += 1;
-
-      /* Don't print out blocks that have gone by.  */
-      while (index < last_index
-	     && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
-	index++;
-
-      while (index < last_index
-	     && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
-	{
-	  if (blocks_searched[index] == 0)
-	    {
-	      struct block *b = BLOCKVECTOR_BLOCK (bl, index);
-	      int nsyms;
-	      register int i;
-	      register struct symbol *sym;
-
-	      nsyms = BLOCK_NSYMS (b);
-
-	      for (i = 0; i < nsyms; i++)
-		{
-		  sym = BLOCK_SYM (b, i);
-		  if (STREQ (SYMBOL_NAME (sym), "default"))
-		    {
-		      if (have_default)
-			continue;
-		      have_default = 1;
-		    }
-		  if (SYMBOL_CLASS (sym) == LOC_LABEL)
-		    {
-		      struct sal_chain *next = (struct sal_chain *)
-			alloca (sizeof (struct sal_chain));
-		      next->next = sal_chain;
-		      next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
-		      sal_chain = next;
-		    }
-		}
-	      blocks_searched[index] = 1;
-	    }
-	  index++;
-	}
-      if (have_default)
-	break;
-      if (sal_chain && this_level_only)
-	break;
-
-      /* After handling the function's top-level block, stop.
-	 Don't continue to its superblock, the block of
-	 per-file symbols.  */
-      if (BLOCK_FUNCTION (block))
-	break;
-      block = BLOCK_SUPERBLOCK (block);
-    }
-
-  if (sal_chain)
-    {
-      struct sal_chain *tmp_chain;
-
-      /* Count the number of entries.  */
-      for (index = 0, tmp_chain = sal_chain; tmp_chain;
-	   tmp_chain = tmp_chain->next)
-	index++;
-
-      sals.nelts = index;
-      sals.sals = (struct symtab_and_line *)
-	xmalloc (index * sizeof (struct symtab_and_line));
-      for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
-	sals.sals[index] = sal_chain->sal;
-    }
-
-  return sals;
-}
-
-static void
-ep_skip_leading_whitespace (s)
-    char **  s;
-{
-   if ((s == NULL) || (*s == NULL))
-       return;
-   while (isspace(**s))
-       *s += 1;
-}
- 
-/* This function examines a string, and attempts to find a token
-   that might be an event name in the leading characters.  If a
-   possible match is found, a pointer to the last character of
-   the token is returned.  Else, NULL is returned. */
-static char *
-ep_find_event_name_end (arg)
-  char *  arg;
-{
-  char *  s = arg;
-  char *  event_name_end = NULL;
- 
-  /* If we could depend upon the presense of strrpbrk, we'd use that... */
-  if (arg == NULL)
-    return NULL;
- 
-  /* We break out of the loop when we find a token delimiter.
-   Basically, we're looking for alphanumerics and underscores;
-   anything else delimites the token. */
-  while (*s != '\0')
-    {
-      if (! isalnum(*s) && (*s != '_'))
-        break;
-      event_name_end = s;
-      s++;
-    }
- 
-  return event_name_end;
-}
-
- 
-/* This function attempts to parse an optional "if <cond>" clause
-   from the arg string.  If one is not found, it returns NULL.
- 
-   Else, it returns a pointer to the condition string.  (It does not
-   attempt to evaluate the string against a particular block.)  And,
-   it updates arg to point to the first character following the parsed
-   if clause in the arg string. */
-static char *
-ep_parse_optional_if_clause (arg)
-  char **  arg;
-{
-  char *  cond_string;
- 
-  if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace((*arg)[2]))
-    return NULL;
- 
-  /* Skip the "if" keyword. */
-  (*arg) += 2;
- 
-  /* Skip any extra leading whitespace, and record the start of the
-     condition string. */
-  ep_skip_leading_whitespace (arg);
-  cond_string = *arg;
- 
-  /* Assume that the condition occupies the remainder of the arg string. */
-  (*arg) += strlen (cond_string);
- 
-  return cond_string;
-}
- 
-/* This function attempts to parse an optional filename from the arg
-   string.  If one is not found, it returns NULL.
- 
-   Else, it returns a pointer to the parsed filename.  (This function
-   makes no attempt to verify that a file of that name exists, or is
-   accessible.)  And, it updates arg to point to the first character
-   following the parsed filename in the arg string.
- 
-   Note that clients needing to preserve the returned filename for
-   future access should copy it to their own buffers. */
-static char *
-ep_parse_optional_filename (arg)
-  char **  arg;
-{
-  static char  filename [1024];
-  char *  arg_p = *arg;
-  int  i;
-  char  c;
- 
-  if ((*arg_p == '\0') || isspace (*arg_p))
-    return NULL;
- 
-  for (i=0; ; i++)
-    {
-      c = *arg_p;
-      if (isspace (c))
-        c = '\0';
-      filename[i] = c;
-      if (c == '\0')
-        break;
-      arg_p++;
-    }
-  *arg = arg_p;
- 
-  return filename;
-}
- 
-/* Commands to deal with catching events, such as signals, exceptions,
-   process start/exit, etc.  */
- 
-typedef enum {catch_fork, catch_vfork} catch_fork_kind;
- 
-static void
-catch_fork_command_1 (fork_kind, arg, tempflag, from_tty)
-  catch_fork_kind  fork_kind;
-  char *  arg;
-  int  tempflag;
-  int  from_tty;
-{
-  char *  cond_string = NULL;
- 
-  ep_skip_leading_whitespace (&arg);
- 
-  /* The allowed syntax is:
-        catch [v]fork
-        catch [v]fork if <cond>
- 
-     First, check if there's an if clause. */
-  cond_string = ep_parse_optional_if_clause (&arg);
- 
-  if ((*arg != '\0') && !isspace (*arg))
-    error ("Junk at end of arguments.");
- 
-  /* If this target supports it, create a fork or vfork catchpoint
-     and enable reporting of such events. */
-  switch (fork_kind) {
-    case catch_fork :
-      create_fork_event_catchpoint (tempflag, cond_string);
-      break;
-    case catch_vfork :
-      create_vfork_event_catchpoint (tempflag, cond_string);
-      break;
-    default :
-      error ("unsupported or unknown fork kind; cannot catch it");
-      break;
-  }
-}
-
-static void
-catch_exec_command_1 (arg, tempflag, from_tty)
-  char *  arg;
-  int  tempflag;
-  int  from_tty;
-{
-  char *  cond_string = NULL;
-
-  ep_skip_leading_whitespace (&arg);
-
-  /* The allowed syntax is:
-        catch exec
-        catch exec if <cond>
-
-     First, check if there's an if clause. */
-  cond_string = ep_parse_optional_if_clause (&arg);
-
-  if ((*arg != '\0') && !isspace (*arg))
-    error ("Junk at end of arguments.");
-
-  /* If this target supports it, create an exec catchpoint
-     and enable reporting of such events. */
-  create_exec_event_catchpoint (tempflag, cond_string);
-}
- 
-#if defined(SOLIB_ADD)
-static void
-catch_load_command_1 (arg, tempflag, from_tty)
-  char *  arg;
-  int  tempflag;
-  int  from_tty;
-{
-  char *  dll_pathname = NULL;
-  char *  cond_string = NULL;
- 
-  ep_skip_leading_whitespace (&arg);
- 
-  /* The allowed syntax is:
-        catch load
-        catch load if <cond>
-        catch load <filename>
-        catch load <filename> if <cond>
- 
-     The user is not allowed to specify the <filename> after an
-     if clause.
- 
-     We'll ignore the pathological case of a file named "if".
- 
-     First, check if there's an if clause.  If so, then there
-     cannot be a filename. */
-  cond_string = ep_parse_optional_if_clause (&arg);
- 
-  /* If there was an if clause, then there cannot be a filename.
-     Else, there might be a filename and an if clause. */
-  if (cond_string == NULL)
-    {
-      dll_pathname = ep_parse_optional_filename (&arg);
-      ep_skip_leading_whitespace (&arg);
-      cond_string = ep_parse_optional_if_clause (&arg);
-    }
- 
-  if ((*arg != '\0') && !isspace (*arg))
-    error ("Junk at end of arguments.");
- 
-  /* Create a load breakpoint that only triggers when a load of
-     the specified dll (or any dll, if no pathname was specified)
-     occurs. */
-  SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string);
-}
- 
-static void
-catch_unload_command_1 (arg, tempflag, from_tty)
-  char *  arg;
-  int  tempflag;
-  int  from_tty;
-{
-  char *  dll_pathname = NULL;
-  char *  cond_string = NULL;
- 
-  ep_skip_leading_whitespace (&arg);
- 
-  /* The allowed syntax is:
-        catch unload
-        catch unload if <cond>
-        catch unload <filename>
-        catch unload <filename> if <cond>
- 
-     The user is not allowed to specify the <filename> after an
-     if clause.
- 
-     We'll ignore the pathological case of a file named "if".
- 
-     First, check if there's an if clause.  If so, then there
-     cannot be a filename. */
-  cond_string = ep_parse_optional_if_clause (&arg);
- 
-  /* If there was an if clause, then there cannot be a filename.
-     Else, there might be a filename and an if clause. */
-  if (cond_string == NULL)
-    {
-      dll_pathname = ep_parse_optional_filename (&arg);
-      ep_skip_leading_whitespace (&arg);
-      cond_string = ep_parse_optional_if_clause (&arg);
-    }
- 
-  if ((*arg != '\0') && !isspace (*arg))
-    error ("Junk at end of arguments.");
- 
-  /* Create an unload breakpoint that only triggers when an unload of
-     the specified dll (or any dll, if no pathname was specified)
-     occurs. */
-  SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string);
-}
-#endif /* SOLIB_ADD */
-
-/* Commands to deal with catching exceptions.  */
-
-/* Set a breakpoint at the specified callback routine for an
-   exception event callback */ 
-
-static void
-create_exception_catchpoint (tempflag, cond_string, ex_event, sal)
-  int tempflag;
-  char * cond_string;
-  enum exception_event_kind ex_event;
-  struct symtab_and_line * sal;
-{
-  struct breakpoint *  b;
-  int  i;
-  int  thread = -1;  /* All threads. */
-
-  if (!sal) /* no exception support? */
-    return;
-
-  b = set_raw_breakpoint (*sal);
-  set_breakpoint_count (breakpoint_count + 1);
-  b->number = breakpoint_count;
-  b->cond = NULL;
-  b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
-  b->thread = thread;
-  b->addr_string = NULL;
-  b->enable = enabled;
-  b->disposition = tempflag ? del : donttouch;
-  switch (ex_event)
-    {
-      case EX_EVENT_THROW:
-        b->type = bp_catch_throw;
-        break;
-      case EX_EVENT_CATCH:
-        b->type = bp_catch_catch;
-        break;
-      default: /* error condition */ 
-        b->type = bp_none;
-        b->enable = disabled;
-        error ("Internal error -- invalid catchpoint kind");
-    }
-  mention (b);
-}
-
-/* Deal with "catch catch" and "catch throw" commands */ 
-
-static void
-catch_exception_command_1 (ex_event, arg, tempflag, from_tty)
-  enum exception_event_kind ex_event;
-  char *  arg;
-  int  tempflag;
-  int  from_tty;
-{
-  char * cond_string = NULL;
-  struct symtab_and_line * sal = NULL;
-  
-  ep_skip_leading_whitespace (&arg);
-  
-  cond_string = ep_parse_optional_if_clause (&arg);
-
-  if ((*arg != '\0') && !isspace (*arg))
-    error ("Junk at end of arguments.");
-
-  if ((ex_event != EX_EVENT_THROW) &&
-      (ex_event != EX_EVENT_CATCH))
-    error ("Unsupported or unknown exception event; cannot catch it");
-
-  /* See if we can find a callback routine */
-  sal = target_enable_exception_callback (ex_event, 1);
-
-  if (sal) 
-    {
-      /* We have callbacks from the runtime system for exceptions.
-         Set a breakpoint on the sal found, if no errors */ 
-      if (sal != (struct symtab_and_line *) -1)
-        create_exception_catchpoint (tempflag, cond_string, ex_event, sal);
-      else
-        return; /* something went wrong with setting up callbacks */ 
-    }
-  else  
-    {
-      /* No callbacks from runtime system for exceptions.
-         Try GNU C++ exception breakpoints using labels in debug info. */
-      if (ex_event == EX_EVENT_CATCH)
-        {
-          handle_gnu_4_16_catch_command (arg, tempflag, from_tty);
-        }
-      else if (ex_event == EX_EVENT_THROW)
-        {
-          /* Set a breakpoint on __raise_exception () */
-          
-          fprintf_filtered (gdb_stderr, "Unsupported with this platform/compiler combination.\n");
-          fprintf_filtered (gdb_stderr, "Perhaps you can achieve the effect you want by setting\n");
-          fprintf_filtered (gdb_stderr, "a breakpoint on __raise_exception().\n");
-        }
-    }
-}
-
-/* Cover routine to allow wrapping target_enable_exception_catchpoints
-   inside a catch_errors */
-
-static int
-cover_target_enable_exception_callback (arg)
-  PTR arg;
-{
-  args_for_catchpoint_enable *args = arg;
-  struct symtab_and_line *sal;
-  sal = target_enable_exception_callback (args->kind, args->enable);
-  if (sal == NULL)
-    return 0;
-  else if (sal == (struct symtab_and_line *) -1)
-    return -1;
-  else
-    return 1; /*is valid*/
-}
-
-
-
-/* This is the original v.4.16 and earlier version of the
-   catch_command_1() function.  Now that other flavours of "catch"
-   have been introduced, and since exception handling can be handled
-   in other ways (through target ops) also, this is used only for the
-   GNU C++ exception handling system.
-   Note: Only the "catch" flavour of GDB 4.16 is handled here.  The
-   "catch NAME" is now no longer allowed in catch_command_1().  Also,
-   there was no code in GDB 4.16 for "catch throw". 
-  
-   Called from catch_exception_command_1 () */
-
-
-static void
-handle_gnu_4_16_catch_command (arg, tempflag, from_tty)
-     char *arg;
-     int tempflag;
-     int from_tty;
-{
-  /* First, translate ARG into something we can deal with in terms
-     of breakpoints.  */
-
-  struct symtabs_and_lines sals;
-  struct symtab_and_line sal;
-  register struct expression *cond = 0;
-  register struct breakpoint *b;
-  char *save_arg;
-  int i;
-
-  INIT_SAL (&sal);	/* initialize to zeroes */
-
-  /* If no arg given, or if first arg is 'if ', all active catch clauses
-     are breakpointed. */
-
-  if (!arg || (arg[0] == 'i' && arg[1] == 'f' 
-	       && (arg[2] == ' ' || arg[2] == '\t')))
-    {
-      /* Grab all active catch clauses.  */
-      sals = get_catch_sals (0);
-    }
-  else
-    {
-      /* Grab selected catch clauses.  */
-      error ("catch NAME not implemented");
-
-#if 0
-      /* Not sure why this code has been disabled. I'm leaving
-         it disabled.  We can never come here now anyway
-         since we don't allow the "catch NAME" syntax.
-         pai/1997-07-11 */ 
-
-      /* This isn't used; I don't know what it was for.  */
-      sals = map_catch_names (arg, catch_breakpoint);
-#endif
-    }
-
-  if (! sals.nelts) 
-    return;
-
-  save_arg = arg;
-  for (i = 0; i < sals.nelts; i++)
-    {
-      resolve_sal_pc (&sals.sals[i]);
-      
-      while (arg && *arg)
-	{
-	  if (arg[0] == 'i' && arg[1] == 'f'
-	      && (arg[2] == ' ' || arg[2] == '\t'))
-	    cond = parse_exp_1 ((arg += 2, &arg), 
-				block_for_pc (sals.sals[i].pc), 0);
-	  else
-	    error ("Junk at end of arguments.");
-	}
-      arg = save_arg;
-    }
-
-  for (i = 0; i < sals.nelts; i++)
-    {
-      sal = sals.sals[i];
-
-      if (from_tty)
-	describe_other_breakpoints (sal.pc, sal.section);
-
-      b = set_raw_breakpoint (sal);
-      set_breakpoint_count (breakpoint_count + 1);
-      b->number = breakpoint_count;
-      b->type = bp_breakpoint; /* Important -- this is an ordinary breakpoint.
-                                  For platforms with callback support for exceptions,
-                                  create_exception_catchpoint() will create special
-                                  bp types (bp_catch_catch and bp_catch_throw), and
-                                  there is code in insert_breakpoints() and elsewhere
-                                  that depends on that. */
-
-      b->cond = cond;
-      b->enable = enabled;
-      b->disposition = tempflag ? del : donttouch;
-
-      mention (b);
-    }
-
-  if (sals.nelts > 1)
-    {
-      printf_unfiltered ("Multiple breakpoints were set.\n");
-      printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
-    }
-  free ((PTR)sals.sals);
-}
-
-#if 0
-/* This creates a temporary internal breakpoint
-   just to placate infrun */
-static struct breakpoint *
-create_temp_exception_breakpoint (pc)
-  CORE_ADDR pc;
-{
-  struct symtab_and_line sal;
-  struct breakpoint *b;
-
-  INIT_SAL(&sal);
-  sal.pc = pc;
-  sal.symtab = NULL;
-  sal.line = 0;
-
-  b = set_raw_breakpoint (sal);
-  if (!b)
-    error ("Internal error -- couldn't set temp exception breakpoint");
-
-  b->type = bp_breakpoint;
-  b->disposition = del;
-  b->enable = enabled;
-  b->silent = 1;
-  b->number = internal_breakpoint_number--;
-  return b;
-}
-#endif
-
-static void
-catch_command_1 (arg, tempflag, from_tty)
-  char *arg;
-  int tempflag;
-  int from_tty;
-{
- 
-  /* The first argument may be an event name, such as "start" or "load".
-     If so, then handle it as such.  If it doesn't match an event name,
-     then attempt to interpret it as an exception name.  (This latter is
-     the v4.16-and-earlier GDB meaning of the "catch" command.)
- 
-     First, try to find the bounds of what might be an event name. */
-  char *  arg1_start = arg;
-  char *  arg1_end;
-  int  arg1_length;
- 
-  if (arg1_start == NULL)
-    {
-      /* Old behaviour was to use pre-v-4.16 syntax */ 
-      /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
-      /* return; */
-      /* Now, this is not allowed */ 
-      error ("Catch requires an event name.");
-
-    }
-  arg1_end = ep_find_event_name_end (arg1_start);
-  if (arg1_end == NULL)
-    error ("catch requires an event");
-  arg1_length = arg1_end + 1 - arg1_start;
- 
-  /* Try to match what we found against known event names. */
-  if (strncmp (arg1_start, "signal", arg1_length) == 0)
-    {
-      error ("Catch of signal not yet implemented");
-    }
-  else if (strncmp (arg1_start, "catch", arg1_length) == 0)
-    {
-      catch_exception_command_1 (EX_EVENT_CATCH, arg1_end+1, tempflag, from_tty); 
-    }
-  else if (strncmp (arg1_start, "throw", arg1_length) == 0)
-    {
-      catch_exception_command_1 (EX_EVENT_THROW, arg1_end+1, tempflag, from_tty);
-    }
-  else if (strncmp (arg1_start, "thread_start", arg1_length) == 0)
-    {
-      error ("Catch of thread_start not yet implemented");
-    }
-  else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0)
-    {
-      error ("Catch of thread_exit not yet implemented");
-    }
-  else if (strncmp (arg1_start, "thread_join", arg1_length) == 0)
-    {
-      error ("Catch of thread_join not yet implemented");
-    }
-  else if (strncmp (arg1_start, "start", arg1_length) == 0)
-    {
-      error ("Catch of start not yet implemented");
-    }
-  else if (strncmp (arg1_start, "exit", arg1_length) == 0)
-    {
-      error ("Catch of exit not yet implemented");
-    }
-  else if (strncmp (arg1_start, "fork", arg1_length) == 0)
-    {
-#if defined(CHILD_INSERT_FORK_CATCHPOINT)
-      catch_fork_command_1 (catch_fork, arg1_end+1, tempflag, from_tty);
-#else
-      error ("Catch of fork not yet implemented");
-#endif
-    }
-  else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
-    {
-#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
-      catch_fork_command_1 (catch_vfork, arg1_end+1, tempflag, from_tty);
-#else
-      error ("Catch of vfork not yet implemented");
-#endif
-    }
-  else if (strncmp (arg1_start, "exec", arg1_length) == 0)
-    {
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
-      catch_exec_command_1 (arg1_end+1, tempflag, from_tty);
-#else
-      error ("Catch of exec not yet implemented");
-#endif
-    }
-  else if (strncmp (arg1_start, "load", arg1_length) == 0)
-    {
-#if defined(SOLIB_ADD)
-      catch_load_command_1 (arg1_end+1, tempflag, from_tty);
-#else
-      error ("Catch of load not implemented");
-#endif
-    }
-  else if (strncmp (arg1_start, "unload", arg1_length) == 0)
-    {
-#if defined(SOLIB_ADD)
-      catch_unload_command_1 (arg1_end+1, tempflag, from_tty);
-#else
-      error ("Catch of load not implemented");
-#endif
-    }
-  else if (strncmp (arg1_start, "stop", arg1_length) == 0)
-    {
-      error ("Catch of stop not yet implemented");
-    }
- 
-  /* This doesn't appear to be an event name */
-
-  else
-    {
-      /* Pre-v.4.16 behaviour was to treat the argument
-         as the name of an exception */ 
-      /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
-      /* Now this is not allowed */ 
-      error ("Unknown event kind specified for catch");
-
-    }
-}
-
-/* Used by the gui, could be made a worker for other things. */
-
-struct breakpoint *
-set_breakpoint_sal (sal)
-     struct symtab_and_line sal;
-{
-  struct breakpoint *b;
-  b = set_raw_breakpoint (sal);
-  set_breakpoint_count (breakpoint_count + 1);
-  b->number = breakpoint_count;
-  b->type = bp_breakpoint;
-  b->cond = 0;
-  b->thread = -1;
-  return b;
-}
-
-#if 0
-/* These aren't used; I don't know what they were for.  */
-/* Disable breakpoints on all catch clauses described in ARGS.  */
-static void
-disable_catch (args)
-     char *args;
-{
-  /* Map the disable command to catch clauses described in ARGS.  */
-}
-
-/* Enable breakpoints on all catch clauses described in ARGS.  */
-static void
-enable_catch (args)
-     char *args;
-{
-  /* Map the disable command to catch clauses described in ARGS.  */
-}
-
-/* Delete breakpoints on all catch clauses in the active scope.  */
-static void
-delete_catch (args)
-     char *args;
-{
-  /* Map the delete command to catch clauses described in ARGS.  */
-}
-#endif /* 0 */
-
-static void
-catch_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  catch_command_1 (arg, 0, from_tty);
-}
-
-
-static void
-tcatch_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  catch_command_1 (arg, 1, from_tty);
-}
-
-
-static void
-clear_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  register struct breakpoint *b, *b1;
-  int default_match;
-  struct symtabs_and_lines sals;
-  struct symtab_and_line sal;
-  register struct breakpoint *found;
-  int i;
-
-  if (arg)
-    {
-      sals = decode_line_spec (arg, 1);
-      default_match = 0;
-    }
-  else
-    {
-      sals.sals = (struct symtab_and_line *) 
-	xmalloc (sizeof (struct symtab_and_line));
-      INIT_SAL (&sal);	/* initialize to zeroes */
-      sal.line = default_breakpoint_line;
-      sal.symtab = default_breakpoint_symtab;
-      sal.pc = default_breakpoint_address;
-      if (sal.symtab == 0)
-	error ("No source file specified.");
-
-      sals.sals[0] = sal;
-      sals.nelts = 1;
-
-      default_match = 1;
-    }
-
-  /* For each line spec given, delete bps which correspond
-     to it.  We do this in two loops: the first loop looks at
-     the initial bp(s) in the chain which should be deleted,
-     the second goes down the rest of the chain looking ahead
-     one so it can take those bps off the chain without messing
-     up the chain. */
-
-
-  for (i = 0; i < sals.nelts; i++)
-    {
-      /* If exact pc given, clear bpts at that pc.
-	 If line given (pc == 0), clear all bpts on specified line.
-	 If defaulting, clear all bpts on default line
-         or at default pc.
-       
-		defaulting    sal.pc != 0    tests to do
-       
-                0              1             pc
-                1              1             pc _and_ line
-                0              0             line
-                1              0             <can't happen> */
-
-      sal = sals.sals[i];
-      found = (struct breakpoint *) 0;
-
-
-      while (breakpoint_chain
-             /* Why don't we check here that this is not
-		a watchpoint, etc., as we do below?
-		I can't make it fail, but don't know
-		what's stopping the failure: a watchpoint
-		of the same address as "sal.pc" should
-		wind up being deleted. */
- 
-             && (  ((sal.pc && (breakpoint_chain->address == sal.pc)) &&
-                   (overlay_debugging == 0 ||
-                    breakpoint_chain->section == sal.section))
-                || ((default_match || (0 == sal.pc))
-                   && breakpoint_chain->source_file != NULL
-                   && sal.symtab != NULL
-                   && STREQ (breakpoint_chain->source_file, sal.symtab->filename)
-                   && breakpoint_chain->line_number == sal.line)))
-
-	{
-	  b1 = breakpoint_chain;
-	  breakpoint_chain = b1->next;
-	  b1->next = found;
-	  found = b1;
-	}
-
-      ALL_BREAKPOINTS (b)
-
-      while (b->next
-             && b->next->type != bp_none
-             && b->next->type != bp_watchpoint
-             && b->next->type != bp_hardware_watchpoint
-             && b->next->type != bp_read_watchpoint
-             && b->next->type != bp_access_watchpoint
-             && (  ((sal.pc && (b->next->address == sal.pc)) &&
-                   (overlay_debugging == 0 ||
-                    b->next->section == sal.section))
-                || ((default_match || (0 == sal.pc))
-                   && b->next->source_file != NULL
-                   && sal.symtab != NULL
-                   && STREQ (b->next->source_file, sal.symtab->filename)
-                   && b->next->line_number == sal.line)))
-
-
-	  {
-	    b1 = b->next;
-	    b->next = b1->next;
-	    b1->next = found;
-	    found = b1;
-	  }
-
-      if (found == 0)
-	{
-	  if (arg)
-	    error ("No breakpoint at %s.", arg);
-	  else
-	    error ("No breakpoint at this line.");
-	}
-
-      if (found->next) from_tty = 1; /* Always report if deleted more than one */
-      if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : "");
-      breakpoints_changed ();
-      while (found)
-	{
-	  if (from_tty) printf_unfiltered ("%d ", found->number);
-	  b1 = found->next;
-	  delete_breakpoint (found);
-	  found = b1;
-	}
-      if (from_tty) putchar_unfiltered ('\n');
-    }
-  free ((PTR)sals.sals);
-}
-
-/* Delete breakpoint in BS if they are `delete' breakpoints and
-   all breakpoints that are marked for deletion, whether hit or not.
-   This is called after any breakpoint is hit, or after errors.  */
-
-void
-breakpoint_auto_delete (bs)
-     bpstat bs;
-{
-  struct breakpoint *b, *temp;
-
-  for (; bs; bs = bs->next)
-    if (bs->breakpoint_at && bs->breakpoint_at->disposition == del 
-	&& bs->stop)
-      delete_breakpoint (bs->breakpoint_at);
-
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    {
-      if (b->disposition == del_at_next_stop)
-	delete_breakpoint (b);
-    }
-}
-
-/* Delete a breakpoint and clean up all traces of it in the data structures. */
-
-void
-delete_breakpoint (bpt)
-     struct breakpoint *bpt;
-{
-  register struct breakpoint *b;
-  register bpstat bs;
-
-  if (bpt == NULL)
-    error ("Internal error (attempted to delete a NULL breakpoint)");
-
-
-  /* Has this bp already been deleted?  This can happen because multiple
-     lists can hold pointers to bp's.  bpstat lists are especial culprits.
-
-     One example of this happening is a watchpoint's scope bp.  When the
-     scope bp triggers, we notice that the watchpoint is out of scope, and
-     delete it.  We also delete its scope bp.  But the scope bp is marked
-     "auto-deleting", and is already on a bpstat.  That bpstat is then
-     checked for auto-deleting bp's, which are deleted.
-
-     A real solution to this problem might involve reference counts in bp's,
-     and/or giving them pointers back to their referencing bpstat's, and
-     teaching delete_breakpoint to only free a bp's storage when no more
-     references were extent.  A cheaper bandaid was chosen. */
-  if (bpt->type == bp_none)
-    return;
-
-  if (delete_breakpoint_hook)
-    delete_breakpoint_hook (bpt);
-
-  if (bpt->inserted)
-    remove_breakpoint (bpt, mark_uninserted);
-      
-  if (breakpoint_chain == bpt)
-    breakpoint_chain = bpt->next;
-
-  /* If we have callback-style exception catchpoints, don't go through
-     the adjustments to the C++ runtime library etc. if the inferior
-     isn't actually running.  target_enable_exception_callback for a
-     null target ops vector gives an undesirable error message, so we
-     check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
-     exceptions are supported in this way, it's OK for now. FIXME */ 
-  if (ep_is_exception_catchpoint (bpt) && target_has_execution)
-    {
-      static char message1[] = "Error in deleting catchpoint %d:\n";
-      static char message[sizeof (message1) + 30];
-      args_for_catchpoint_enable args;
-
-      sprintf (message, message1, bpt->number);	/* Format possible error msg */
-      args.kind = bpt->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW;
-      args.enable = 0;
-      catch_errors (cover_target_enable_exception_callback, &args,
-		    message, RETURN_MASK_ALL);
-    }
-
-
-  ALL_BREAKPOINTS (b)
-    if (b->next == bpt)
-      {
-	b->next = bpt->next;
-	break;
-      }
-
-  /* Before turning off the visuals for the bp, check to see that
-     there are no other bps at the same address. */
-  if (tui_version)
-    {
-      int clearIt;
-
-      ALL_BREAKPOINTS (b)
-        {
-          clearIt = (b->address != bpt->address);
-          if (!clearIt)
-            break;
-        }
-
-      if (clearIt)
-        {
-          TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, bpt, 0));
-          TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos));
-        }
-    }
-
-  check_duplicates (bpt->address, bpt->section);
-  /* If this breakpoint was inserted, and there is another breakpoint
-     at the same address, we need to insert the other breakpoint.  */
-  if (bpt->inserted
-      && bpt->type != bp_hardware_watchpoint
-      && bpt->type != bp_read_watchpoint
-      && bpt->type != bp_access_watchpoint
-      && bpt->type != bp_catch_fork
-      && bpt->type != bp_catch_vfork
-      && bpt->type != bp_catch_exec)
-    {
-      ALL_BREAKPOINTS (b)
-	if (b->address == bpt->address
-	    && b->section == bpt->section
-	    && !b->duplicate
-	    && b->enable != disabled
-	    && b->enable != shlib_disabled
-	    && b->enable != call_disabled)
-	  {
-	    int val;
-	    val = target_insert_breakpoint (b->address, b->shadow_contents);
-	    if (val != 0)
-	      {
-		target_terminal_ours_for_output ();
-		fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
-		memory_error (val, b->address);	/* which bombs us out */
-	      }
-	    else
-	      b->inserted = 1;
-	  }
-    }
-
-  free_command_lines (&bpt->commands);
-  if (bpt->cond)
-    free (bpt->cond);
-  if (bpt->cond_string != NULL)
-    free (bpt->cond_string);
-  if (bpt->addr_string != NULL)
-    free (bpt->addr_string);
-  if (bpt->exp != NULL)
-    free (bpt->exp);
-  if (bpt->exp_string != NULL)
-    free (bpt->exp_string);
-  if (bpt->val != NULL)
-    value_free (bpt->val);
-  if (bpt->source_file != NULL)
-    free (bpt->source_file);
-  if (bpt->dll_pathname != NULL)
-    free (bpt->dll_pathname);
-  if (bpt->triggered_dll_pathname != NULL)
-    free (bpt->triggered_dll_pathname);
-  if (bpt->exec_pathname != NULL)
-    free (bpt->exec_pathname);
-
-  /* Be sure no bpstat's are pointing at it after it's been freed.  */
-  /* FIXME, how can we find all bpstat's?
-     We just check stop_bpstat for now.  */
-  for (bs = stop_bpstat; bs; bs = bs->next)
-    if (bs->breakpoint_at == bpt)
-      {
-	bs->breakpoint_at = NULL;
-
-	/* we'd call bpstat_clear_actions, but that free's stuff and due
-	   to the multiple pointers pointing to one item with no
-	   reference counts found anywhere through out the bpstat's (how
-	   do you spell fragile?), we don't want to free things twice --
-	   better a memory leak than a corrupt malloc pool! */
-	bs->commands = NULL;
-	bs->old_val = NULL;
-      }
-  /* On the chance that someone will soon try again to delete this same
-     bp, we mark it as deleted before freeing its storage. */
-  bpt->type = bp_none;
-
-  free ((PTR)bpt);
-}
-
-void
-delete_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  struct breakpoint *b, *temp;
-
-  if (arg == 0)
-    {
-      int breaks_to_delete = 0;
-
-      /* Delete all breakpoints if no argument.
-	 Do not delete internal or call-dummy breakpoints, these
-	 have to be deleted with an explicit breakpoint number argument.  */
-      ALL_BREAKPOINTS (b) 
-	{
-	  if (b->type != bp_call_dummy && 
-              b->type != bp_shlib_event && 
-              b->number >= 0)
-	    breaks_to_delete = 1;
-	}
-
-      /* Ask user only if there are some breakpoints to delete.  */
-      if (!from_tty
-	  || (breaks_to_delete && query ("Delete all breakpoints? ")))
-	{
-	  ALL_BREAKPOINTS_SAFE (b, temp) 
-	    {
-	      if (b->type != bp_call_dummy &&
-                  b->type != bp_shlib_event &&
-                  b->number >= 0)
-		delete_breakpoint (b);
-	    }
-	}
-    }
-  else
-    map_breakpoint_numbers (arg, delete_breakpoint);
-}
-
-/* Reset a breakpoint given it's struct breakpoint * BINT.
-   The value we return ends up being the return value from catch_errors.
-   Unused in this case.  */
-
-static int
-breakpoint_re_set_one (bint)
-     PTR bint;
-{
-  struct breakpoint *b = (struct breakpoint *)bint;  /* get past catch_errs */
-  struct value *mark;
-  int i;
-  struct symtabs_and_lines sals;
-  char *s;
-  enum enable save_enable;
-
-  switch (b->type)
-    {
-    case bp_none:
-      warning ("attempted to reset apparently deleted breakpoint #%d?\n", b->number);
-      return 0;
-    case bp_breakpoint:
-    case bp_hardware_breakpoint:
-    case bp_catch_load:
-    case bp_catch_unload:
-      if (b->addr_string == NULL)
-	{
-	  /* Anything without a string can't be re-set. */
-	  delete_breakpoint (b);
-	  return 0;
-	}
-      /* In case we have a problem, disable this breakpoint.  We'll restore
-	 its status if we succeed.  */
-      save_enable = b->enable;
-      b->enable = disabled;
-
-      set_language (b->language);
-      input_radix = b->input_radix;
-      s = b->addr_string;
-      sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL);
-      for (i = 0; i < sals.nelts; i++)
-	{
-	  resolve_sal_pc (&sals.sals[i]);
-
-	  /* Reparse conditions, they might contain references to the
-	     old symtab.  */
-	  if (b->cond_string != NULL)
-	    {
-	      s = b->cond_string;
-	      if (b->cond)
-		free ((PTR)b->cond);
-	      b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0);
-	    }
-
-	  /* We need to re-set the breakpoint if the address changes...*/
-	  if (b->address != sals.sals[i].pc
-	      /* ...or new and old breakpoints both have source files, and
-		 the source file name or the line number changes...  */
-	      || (b->source_file != NULL
-		  && sals.sals[i].symtab != NULL
-		  && (!STREQ (b->source_file, sals.sals[i].symtab->filename)
-		      || b->line_number != sals.sals[i].line)
-		  )
-	      /* ...or we switch between having a source file and not having
-		 one.  */
-	      || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL))
-	      )
-	    {
-	      if (b->source_file != NULL)
-		free (b->source_file);
-	      if (sals.sals[i].symtab == NULL)
-		b->source_file = NULL;
-	      else
-		b->source_file =
-		  savestring (sals.sals[i].symtab->filename,
-			      strlen (sals.sals[i].symtab->filename));
-	      b->line_number = sals.sals[i].line;
-	      b->address = sals.sals[i].pc;
-
-             /* Used to check for duplicates here, but that can
-		cause trouble, as it doesn't check for disable
-                breakpoints. */
-
-	      mention (b);
-
-	      /* Might be better to do this just once per breakpoint_re_set,
-		 rather than once for every breakpoint.  */
-	      breakpoints_changed ();
-	    }
-	  b->section = sals.sals[i].section;
-	  b->enable = save_enable;	/* Restore it, this worked. */
-
-
-          /* Now that this is re-enabled, check_duplicates
-	     can be used. */
-          check_duplicates (b->address, b->section);
-
-	}
-      free ((PTR)sals.sals);
-      break;
-
-    case bp_watchpoint:
-    case bp_hardware_watchpoint:
-    case bp_read_watchpoint:
-    case bp_access_watchpoint:
-      innermost_block = NULL;
-      /* The issue arises of what context to evaluate this in.  The same
-	 one as when it was set, but what does that mean when symbols have
-	 been re-read?  We could save the filename and functionname, but
-	 if the context is more local than that, the best we could do would
-	 be something like how many levels deep and which index at that
-	 particular level, but that's going to be less stable than filenames
-	 or functionnames.  */
-      /* So for now, just use a global context.  */
-      if (b->exp)
-	free ((PTR)b->exp);
-      b->exp = parse_expression (b->exp_string);
-      b->exp_valid_block = innermost_block;
-      mark = value_mark ();
-      if (b->val)
-	value_free (b->val);
-      b->val = evaluate_expression (b->exp);
-      release_value (b->val);
-      if (VALUE_LAZY (b->val))
-	value_fetch_lazy (b->val);
-
-      if (b->cond_string != NULL)
-	{
-	  s = b->cond_string;
-	  if (b->cond)
-	    free ((PTR)b->cond);
-	  b->cond = parse_exp_1 (&s, (struct block *)0, 0);
-	}
-      if (b->enable == enabled)
-	mention (b);
-      value_free_to_mark (mark);
-      break;
-    case bp_catch_catch:  
-    case bp_catch_throw:  
-      break;
-    /* We needn't really do anything to reset these, since the mask
-       that requests them is unaffected by e.g., new libraries being
-       loaded. */
-    case bp_catch_fork:
-    case bp_catch_vfork:
-    case bp_catch_exec:
-      break;
- 
-    default:
-      printf_filtered ("Deleting unknown breakpoint type %d\n", b->type);
-      /* fall through */
-    /* Delete longjmp breakpoints, they will be reset later by
-       breakpoint_re_set.  */
-    case bp_longjmp:
-    case bp_longjmp_resume:
-      delete_breakpoint (b);
-      break;
-
-    /* This breakpoint is special, it's set up when the inferior
-       starts and we really don't want to touch it.  */
-    case bp_shlib_event:
-
-    /* Keep temporary breakpoints, which can be encountered when we step
-       over a dlopen call and SOLIB_ADD is resetting the breakpoints.
-       Otherwise these should have been blown away via the cleanup chain
-       or by breakpoint_init_inferior when we rerun the executable.  */
-    case bp_until:
-    case bp_finish:
-    case bp_watchpoint_scope:
-    case bp_call_dummy:
-    case bp_step_resume:
-      break;
-    }
-
-  return 0;
-}
-
-/* Re-set all breakpoints after symbols have been re-loaded.  */
-void
-breakpoint_re_set ()
-{
-  struct breakpoint *b, *temp;
-  enum language save_language;
-  int save_input_radix;
-  static char message1[] = "Error in re-setting breakpoint %d:\n";
-  char message[sizeof (message1) + 30 /* slop */];
-  
-  save_language = current_language->la_language;
-  save_input_radix = input_radix;
-  ALL_BREAKPOINTS_SAFE (b, temp)
-    {
-      sprintf (message, message1, b->number);	/* Format possible error msg */
-      catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
-    }
-  set_language (save_language);
-  input_radix = save_input_radix;
-
-#ifdef GET_LONGJMP_TARGET
-  create_longjmp_breakpoint ("longjmp");
-  create_longjmp_breakpoint ("_longjmp");
-  create_longjmp_breakpoint ("siglongjmp");
-  create_longjmp_breakpoint ("_siglongjmp");
-  create_longjmp_breakpoint (NULL);
-#endif
-
-#if 0
-  /* Took this out (temporarily at least), since it produces an extra 
-     blank line at startup. This messes up the gdbtests. -PB */
-  /* Blank line to finish off all those mention() messages we just printed.  */
-  printf_filtered ("\n");
-#endif
-}
-
-/* Set ignore-count of breakpoint number BPTNUM to COUNT.
-   If from_tty is nonzero, it prints a message to that effect,
-   which ends with a period (no newline).  */
-
-/* Reset the thread number of this breakpoint:
-
-   - If the breakpoint is for all threads, leave it as-is.
-   - Else, reset it to the current thread for inferior_pid. */
-void
-breakpoint_re_set_thread (b)
-  struct breakpoint *  b;
-{
-  if (b->thread != -1)
-    {
-      if (in_thread_list (inferior_pid))
-        b->thread = pid_to_thread_id (inferior_pid);
-    }
-}
-
-void
-set_ignore_count (bptnum, count, from_tty)
-     int bptnum, count, from_tty;
-{
-  register struct breakpoint *b;
-
-  if (count < 0)
-    count = 0;
-
-  ALL_BREAKPOINTS (b)
-    if (b->number == bptnum)
-      {
-	b->ignore_count = count;
-	if (!from_tty)
-	  return;
-	else if (count == 0)
-	  printf_filtered ("Will stop next time breakpoint %d is reached.",
-			   bptnum);
-	else if (count == 1)
-	  printf_filtered ("Will ignore next crossing of breakpoint %d.",
-			   bptnum);
-	else
-	  printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
-		  count, bptnum);
-	breakpoints_changed ();
-	return;
-      }
-
-  error ("No breakpoint number %d.", bptnum);
-}
-
-/* Clear the ignore counts of all breakpoints.  */
-void
-breakpoint_clear_ignore_counts ()
-{
-  struct breakpoint *b;
-
-  ALL_BREAKPOINTS (b)
-    b->ignore_count = 0;
-}
-
-/* Command to set ignore-count of breakpoint N to COUNT.  */
-
-static void
-ignore_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  char *p = args;
-  register int num;
-
-  if (p == 0)
-    error_no_arg ("a breakpoint number");
-  
-  num = get_number (&p);
-
-  if (*p == 0)
-    error ("Second argument (specified ignore-count) is missing.");
-
-  set_ignore_count (num,
-		    longest_to_int (value_as_long (parse_and_eval (p))),
-		    from_tty);
-  printf_filtered ("\n");
-  breakpoints_changed ();
-}
-
-/* Call FUNCTION on each of the breakpoints
-   whose numbers are given in ARGS.  */
-
-static void
-map_breakpoint_numbers (args, function)
-     char *args;
-     void (*function) PARAMS ((struct breakpoint *));
-{
-  register char *p = args;
-  char *p1;
-  register int num;
-  register struct breakpoint *b;
-
-  if (p == 0)
-    error_no_arg ("one or more breakpoint numbers");
-
-  while (*p)
-    {
-      p1 = p;
-      
-      num = get_number (&p1);
-
-      ALL_BREAKPOINTS (b)
-	if (b->number == num)
-	  {
-	    struct breakpoint *related_breakpoint = b->related_breakpoint;
-	    function (b);
-	    if (related_breakpoint)
-	      function (related_breakpoint);
-	    goto win;
-	  }
-      printf_unfiltered ("No breakpoint number %d.\n", num);
-    win:
-      p = p1;
-    }
-}
-
-void
-disable_breakpoint (bpt)
-     struct breakpoint *bpt;
-{
-  /* Never disable a watchpoint scope breakpoint; we want to
-     hit them when we leave scope so we can delete both the
-     watchpoint and its scope breakpoint at that time.  */
-  if (bpt->type == bp_watchpoint_scope)
-    return;
-
-  bpt->enable = disabled;
-
-  check_duplicates (bpt->address, bpt->section);
-
-  if (modify_breakpoint_hook)
-    modify_breakpoint_hook (bpt);
-}
-
-/* ARGSUSED */
-static void
-disable_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  register struct breakpoint *bpt;
-  if (args == 0)
-    ALL_BREAKPOINTS (bpt)
-      switch (bpt->type)
-	{
-        case bp_none:
-          warning ("attempted to disable apparently deleted breakpoint #%d?\n", bpt->number);
-          continue;
-	case bp_breakpoint:
-        case bp_catch_load:
-        case bp_catch_unload:
-        case bp_catch_fork:
-        case bp_catch_vfork:
-        case bp_catch_exec:
-	case bp_catch_catch:
-	case bp_catch_throw:
-        case bp_hardware_breakpoint:
-        case bp_watchpoint:
-        case bp_hardware_watchpoint:
-        case bp_read_watchpoint:
-        case bp_access_watchpoint:
-	  disable_breakpoint (bpt);
-	default:
-	  continue;
-	}
-  else
-    map_breakpoint_numbers (args, disable_breakpoint);
-}
-
-static void
-do_enable_breakpoint (bpt, disposition)
-     struct breakpoint *bpt;
-     enum bpdisp disposition;
-{
-  struct frame_info *save_selected_frame = NULL;
-  int save_selected_frame_level = -1;
-  int target_resources_ok, other_type_used;
-  struct value *mark;
-
-  if (bpt->type == bp_hardware_breakpoint)
-    {
-      int i;
-      i = hw_breakpoint_used_count();
-      target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
-		bp_hardware_breakpoint, i+1, 0);
-      if (target_resources_ok == 0)
-        error ("No hardware breakpoint support in the target.");
-      else if (target_resources_ok < 0)
-        error ("Hardware breakpoints used exceeds limit.");
-    }
-
-  bpt->enable = enabled;
-  bpt->disposition = disposition;
-  check_duplicates (bpt->address, bpt->section);
-  breakpoints_changed ();
-
-  if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint ||
-      bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint)
-    {
-      if (bpt->exp_valid_block != NULL)
-	{
-	  struct frame_info *fr =
-
-          /* Ensure that we have the current frame.  Else, this
-             next query may pessimistically be answered as, "No,
-             not within current scope". */
-          get_current_frame ();
-          fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame);
-	  if (fr == NULL)
-	    {
-	      printf_filtered ("\
-Cannot enable watchpoint %d because the block in which its expression\n\
-is valid is not currently in scope.\n", bpt->number);
-	      bpt->enable = disabled;
-	      return;
-	    }
-
-	  save_selected_frame = selected_frame;
-	  save_selected_frame_level = selected_frame_level;
-	  select_frame (fr, -1);
-	}
-
-      value_free (bpt->val);
-      mark = value_mark ();
-      bpt->val = evaluate_expression (bpt->exp);
-      release_value (bpt->val);
-      if (VALUE_LAZY (bpt->val))
-	value_fetch_lazy (bpt->val);
-
-      if (bpt->type == bp_hardware_watchpoint ||
-           bpt->type == bp_read_watchpoint ||
-           bpt->type == bp_access_watchpoint)
-      {
-        int i = hw_watchpoint_used_count (bpt->type, &other_type_used);
-        int mem_cnt = can_use_hardware_watchpoint (bpt->val);
-
-        /* Hack around 'unused var' error for some targets here */
-        (void) mem_cnt, i;
-        target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
-                bpt->type, i + mem_cnt, other_type_used);
-        /* we can consider of type is bp_hardware_watchpoint, convert to 
-	   bp_watchpoint in the following condition */
-        if (target_resources_ok < 0)
-	  {
-             printf_filtered("\
-Cannot enable watchpoint %d because target watch resources\n\
-have been allocated for other watchpoints.\n", bpt->number);
-	     bpt->enable = disabled;
-	     value_free_to_mark (mark);
-	     return;
-          }
-      }
-
-      if (save_selected_frame_level >= 0)
-	select_and_print_frame (save_selected_frame, save_selected_frame_level);
-      value_free_to_mark (mark);
-    }
-  if (modify_breakpoint_hook)
-    modify_breakpoint_hook (bpt);
-}
-
-void
-enable_breakpoint (bpt)
-     struct breakpoint *bpt;
-{
-  do_enable_breakpoint (bpt, bpt->disposition);
-}
-
-/* The enable command enables the specified breakpoints (or all defined
-   breakpoints) so they once again become (or continue to be) effective
-   in stopping the inferior. */
-
-/* ARGSUSED */
-static void
-enable_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  register struct breakpoint *bpt;
-  if (args == 0)
-    ALL_BREAKPOINTS (bpt)
-      switch (bpt->type)
-	{
-        case bp_none:
-          warning ("attempted to enable apparently deleted breakpoint #%d?\n", bpt->number);
-          continue;
-	case bp_breakpoint:
-        case bp_catch_load:
-        case bp_catch_unload:
-        case bp_catch_fork:
-        case bp_catch_vfork:
-        case bp_catch_exec:
-	case bp_catch_catch:
-	case bp_catch_throw:
-	case bp_hardware_breakpoint:
-	case bp_watchpoint:
-	case bp_hardware_watchpoint:
-	case bp_read_watchpoint:
-	case bp_access_watchpoint:
-	  enable_breakpoint (bpt);
-	default:
-	  continue;
-	}
-  else
-    map_breakpoint_numbers (args, enable_breakpoint);
-}
-
-static void
-enable_once_breakpoint (bpt)
-     struct breakpoint *bpt;
-{
-  do_enable_breakpoint (bpt, disable);
-}
-
-/* ARGSUSED */
-static void
-enable_once_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  map_breakpoint_numbers (args, enable_once_breakpoint);
-}
-
-static void
-enable_delete_breakpoint (bpt)
-     struct breakpoint *bpt;
-{
-  do_enable_breakpoint (bpt, del);
-}
-
-/* ARGSUSED */
-static void
-enable_delete_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  map_breakpoint_numbers (args, enable_delete_breakpoint);
-}
-
-/* Use default_breakpoint_'s, or nothing if they aren't valid.  */
-
-struct symtabs_and_lines
-decode_line_spec_1 (string, funfirstline)
-     char *string;
-     int funfirstline;
-{
-  struct symtabs_and_lines sals;
-  if (string == 0)
-    error ("Empty line specification.");
-  if (default_breakpoint_valid)
-    sals = decode_line_1 (&string, funfirstline,
-			  default_breakpoint_symtab, default_breakpoint_line,
-			  (char ***)NULL);
-  else
-    sals = decode_line_1 (&string, funfirstline,
-			  (struct symtab *)NULL, 0, (char ***)NULL);
-  if (*string)
-    error ("Junk at end of line specification: %s", string);
-  return sals;
-}
-
-void
-_initialize_breakpoint ()
-{
-  struct cmd_list_element *c;
-
-  breakpoint_chain = 0;
-  /* Don't bother to call set_breakpoint_count.  $bpnum isn't useful
-     before a breakpoint is set.  */
-  breakpoint_count = 0;
-
-  add_com ("ignore", class_breakpoint, ignore_command,
-	   "Set ignore-count of breakpoint number N to COUNT.\n\
-Usage is `ignore N COUNT'.");
-  if (xdb_commands)
-    add_com_alias("bc", "ignore", class_breakpoint, 1);
-
-  add_com ("commands", class_breakpoint, commands_command,
-	   "Set commands to be executed when a breakpoint is hit.\n\
-Give breakpoint number as argument after \"commands\".\n\
-With no argument, the targeted breakpoint is the last one set.\n\
-The commands themselves follow starting on the next line.\n\
-Type a line containing \"end\" to indicate the end of them.\n\
-Give \"silent\" as the first line to make the breakpoint silent;\n\
-then no output is printed when it is hit, except what the commands print.");
-
-  add_com ("condition", class_breakpoint, condition_command,
-	   "Specify breakpoint number N to break only if COND is true.\n\
-Usage is `condition N COND', where N is an integer and COND is an\n\
-expression to be evaluated whenever breakpoint N is reached.  ");
-
-  add_com ("tbreak", class_breakpoint, tbreak_command,
-	   "Set a temporary breakpoint.  Args like \"break\" command.\n\
-Like \"break\" except the breakpoint is only temporary,\n\
-so it will be deleted when hit.  Equivalent to \"break\" followed\n\
-by using \"enable delete\" on the breakpoint number.");
-  add_com("txbreak", class_breakpoint, tbreak_at_finish_command,
-          "Set temporary breakpoint at procedure exit.  Either there should\n\
-be no argument or the argument must be a depth.\n");
-
-  add_com ("hbreak", class_breakpoint, hbreak_command,
-	   "Set a hardware assisted  breakpoint. Args like \"break\" command.\n\
-Like \"break\" except the breakpoint requires hardware support,\n\
-some target hardware may not have this support.");
-
-  add_com ("thbreak", class_breakpoint, thbreak_command,
-	   "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
-Like \"hbreak\" except the breakpoint is only temporary,\n\
-so it will be deleted when hit.");
-
-  add_prefix_cmd ("enable", class_breakpoint, enable_command,
-		  "Enable some breakpoints.\n\
-Give breakpoint numbers (separated by spaces) as arguments.\n\
-With no subcommand, breakpoints are enabled until you command otherwise.\n\
-This is used to cancel the effect of the \"disable\" command.\n\
-With a subcommand you can enable temporarily.",
-		  &enablelist, "enable ", 1, &cmdlist);
-  if (xdb_commands)
-      add_com("ab", class_breakpoint, enable_command,
-		      "Enable some breakpoints.\n\
-Give breakpoint numbers (separated by spaces) as arguments.\n\
-With no subcommand, breakpoints are enabled until you command otherwise.\n\
-This is used to cancel the effect of the \"disable\" command.\n\
-With a subcommand you can enable temporarily.");
-
-  add_com_alias ("en", "enable", class_breakpoint, 1);
-
-  add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command,
-		  "Enable some breakpoints.\n\
-Give breakpoint numbers (separated by spaces) as arguments.\n\
-This is used to cancel the effect of the \"disable\" command.\n\
-May be abbreviated to simply \"enable\".\n",
-		  &enablebreaklist, "enable breakpoints ", 1, &enablelist);
-
-  add_cmd ("once", no_class, enable_once_command,
-	   "Enable breakpoints for one hit.  Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
-	   &enablebreaklist);
-
-  add_cmd ("delete", no_class, enable_delete_command,
-	   "Enable breakpoints and delete when hit.  Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it is deleted.",
-	   &enablebreaklist);
-
-  add_cmd ("delete", no_class, enable_delete_command,
-	   "Enable breakpoints and delete when hit.  Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it is deleted.",
-	   &enablelist);
-
-  add_cmd ("once", no_class, enable_once_command,
-	   "Enable breakpoints for one hit.  Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
-	   &enablelist);
-
-  add_prefix_cmd ("disable", class_breakpoint, disable_command,
-	   "Disable some breakpoints.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To disable all breakpoints, give no argument.\n\
-A disabled breakpoint is not forgotten, but has no effect until reenabled.",
-		  &disablelist, "disable ", 1, &cmdlist);
-  add_com_alias ("dis", "disable", class_breakpoint, 1);
-  add_com_alias ("disa", "disable", class_breakpoint, 1);
-  if (xdb_commands)
-    add_com("sb", class_breakpoint, disable_command,
-	        "Disable some breakpoints.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To disable all breakpoints, give no argument.\n\
-A disabled breakpoint is not forgotten, but has no effect until reenabled.");
-
-  add_cmd ("breakpoints", class_alias, disable_command,
-	   "Disable some breakpoints.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To disable all breakpoints, give no argument.\n\
-A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
-This command may be abbreviated \"disable\".",
-	   &disablelist);
-
-  add_prefix_cmd ("delete", class_breakpoint, delete_command,
-	   "Delete some breakpoints or auto-display expressions.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To delete all breakpoints, give no argument.\n\
-\n\
-Also a prefix command for deletion of other GDB objects.\n\
-The \"unset\" command is also an alias for \"delete\".",
-		  &deletelist, "delete ", 1, &cmdlist);
-  add_com_alias ("d", "delete", class_breakpoint, 1);
-  if (xdb_commands)
-    add_com ("db", class_breakpoint, delete_command,
-    	   "Delete some breakpoints.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To delete all breakpoints, give no argument.\n");
-
-  add_cmd ("breakpoints", class_alias, delete_command,
-	   "Delete some breakpoints or auto-display expressions.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To delete all breakpoints, give no argument.\n\
-This command may be abbreviated \"delete\".",
-	   &deletelist);
-
-  add_com ("clear", class_breakpoint, clear_command,
-	   concat ("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\n",
-"With no argument, clears all breakpoints in the line that the selected frame\n\
-is executing in.\n\
-\n\
-See also the \"delete\" command which clears breakpoints by number.", NULL));
-
-  add_com ("break", class_breakpoint, break_command,
-	   concat ("Set breakpoint at specified line or function.\n\
-Argument may be line number, function name, or \"*\" and an address.\n\
-If line number is specified, break at start of code for that line.\n\
-If function is specified, break at start of code for that function.\n\
-If an address is specified, break at that exact address.\n",
-"With no arg, uses current execution address of selected stack frame.\n\
-This is useful for breaking on return to a stack frame.\n\
-\n\
-Multiple breakpoints at one place are permitted, and useful if conditional.\n\
-\n\
-Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
-  add_com_alias ("b", "break", class_run, 1);
-  add_com_alias ("br", "break", class_run, 1);
-  add_com_alias ("bre", "break", class_run, 1);
-  add_com_alias ("brea", "break", class_run, 1);
-
-  add_com("xbreak", class_breakpoint, break_at_finish_command,
-          concat("Set breakpoint at procedure exit. \n\
-Argument may be function name, or \"*\" and an address.\n\
-If function is specified, break at end of code for that function.\n\
-If an address is specified, break at the end of the function that contains \n\
-that exact address.\n",
-"With no arg, uses current execution address of selected stack frame.\n\
-This is useful for breaking on return to a stack frame.\n\
-\n\
-Multiple breakpoints at one place are permitted, and useful if conditional.\n\
-\n\
-Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
-  add_com_alias ("xb", "xbreak", class_breakpoint, 1);
-  add_com_alias ("xbr", "xbreak", class_breakpoint, 1);
-  add_com_alias ("xbre", "xbreak", class_breakpoint, 1);
-  add_com_alias ("xbrea", "xbreak", class_breakpoint, 1);
-
-  if (xdb_commands)
-    {
-      add_com_alias ("ba", "break", class_breakpoint, 1);
-      add_com_alias ("bu", "ubreak", class_breakpoint, 1);
-      add_com ("bx", class_breakpoint, break_at_finish_at_depth_command,
-          "Set breakpoint at procedure exit.  Either there should\n\
-be no argument or the argument must be a depth.\n");
-    }
-
-  if (dbx_commands)
-    {
-      add_abbrev_prefix_cmd("stop", class_breakpoint, stop_command, 
-           "Break in function/address or break at a line in the current file.",
-           &stoplist, "stop ", 1, &cmdlist);
-      add_cmd("in", class_breakpoint, stopin_command,
-              "Break in function or address.\n", &stoplist);
-      add_cmd("at", class_breakpoint, stopat_command,
-              "Break at a line in the current file.\n", &stoplist);
-      add_com("status", class_info, breakpoints_info, 
-	    concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint     - normal breakpoint\n\
-\twatchpoint     - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
-breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed.\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
-    }
-
-  add_info ("breakpoints", breakpoints_info,
-	    concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint     - normal breakpoint\n\
-\twatchpoint     - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
-breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed.\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
-
-  if (xdb_commands)
-    add_com("lb", class_breakpoint, breakpoints_info,
-	    concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint     - normal breakpoint\n\
-\twatchpoint     - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
-breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed.\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
-
-#if MAINTENANCE_CMDS
-
-  add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
-	    concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint     - normal breakpoint\n\
-\twatchpoint     - watchpoint\n\
-\tlongjmp        - internal breakpoint used to step through longjmp()\n\
-\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
-\tuntil          - internal breakpoint used by the \"until\" command\n\
-\tfinish         - internal breakpoint used by the \"finish\" command\n",
-"The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
-breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed.\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL),
-	   &maintenanceinfolist);
-
-#endif	/* MAINTENANCE_CMDS */
-
-  add_com ("catch", class_breakpoint, catch_command,
-         "Set catchpoints to catch events.\n\
-Raised signals may be caught:\n\
-\tcatch signal              - all signals\n\
-\tcatch signal <signame>    - a particular signal\n\
-Raised exceptions may be caught:\n\
-\tcatch throw               - all exceptions, when thrown\n\
-\tcatch throw <exceptname>  - a particular exception, when thrown\n\
-\tcatch catch               - all exceptions, when caught\n\
-\tcatch catch <exceptname>  - a particular exception, when caught\n\
-Thread or process events may be caught:\n\
-\tcatch thread_start        - any threads, just after creation\n\
-\tcatch thread_exit         - any threads, just before expiration\n\
-\tcatch thread_join         - any threads, just after joins\n\
-Process events may be caught:\n\
-\tcatch start               - any processes, just after creation\n\
-\tcatch exit                - any processes, just before expiration\n\
-\tcatch fork                - calls to fork()\n\
-\tcatch vfork               - calls to vfork()\n\
-\tcatch exec                - calls to exec()\n\
-Dynamically-linked library events may be caught:\n\
-\tcatch load                - loads of any library\n\
-\tcatch load <libname>      - loads of a particular library\n\
-\tcatch unload              - unloads of any library\n\
-\tcatch unload <libname>    - unloads of a particular library\n\
-The act of your program's execution stopping may also be caught:\n\
-\tcatch stop\n\n\
-C++ exceptions may be caught:\n\
-\tcatch throw               - all exceptions, when thrown\n\
-\tcatch catch               - all exceptions, when caught\n\
-\n\
-Do \"help set follow-fork-mode\" for info on debugging your program\n\
-after a fork or vfork is caught.\n\n\
-Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
- 
-  add_com ("tcatch", class_breakpoint, tcatch_command,
-         "Set temporary catchpoints to catch events.\n\
-Args like \"catch\" command.\n\
-Like \"catch\" except the catchpoint is only temporary,\n\
-so it will be deleted when hit.  Equivalent to \"catch\" followed\n\
-by using \"enable delete\" on the catchpoint number.");
- 
-add_com ("watch", class_breakpoint, watch_command,
-
-	   "Set a watchpoint for an expression.\n\
-A watchpoint stops execution of your program whenever the value of\n\
-an expression changes.");
-
-  add_com ("rwatch", class_breakpoint, rwatch_command,
-	   "Set a read watchpoint for an expression.\n\
-A watchpoint stops execution of your program whenever the value of\n\
-an expression is read.");
-
-  add_com ("awatch", class_breakpoint, awatch_command,
-	   "Set a watchpoint for an expression.\n\
-A watchpoint stops execution of your program whenever the value of\n\
-an expression is either read or written.");
-
-  add_info ("watchpoints", breakpoints_info,
-	    "Synonym for ``info breakpoints''.");
-
-
-  c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger,
-                   (char *) &can_use_hw_watchpoints,
-                   "Set debugger's willingness to use watchpoint hardware.\n\
-If zero, gdb will not use hardware for new watchpoints, even if\n\
-such is available.  (However, any hardware watchpoints that were\n\
-created before setting this to nonzero, will continue to use watchpoint\n\
-hardware.)",
-               &setlist);
-  add_show_from_set (c, &showlist);
-
-  can_use_hw_watchpoints = 1;
-}