This commit was manufactured by cvs2svn to create branch

'kseitz_interps-20020528-branch'.

Cherrypick from cagney_regbuf-20020515-branch 2002-06-15 12:26:32 UTC nobody 'This commit was manufactured by cvs2svn to create branch':
    .cvsignore
    COPYING
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    symlink-tree
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    ylwrap
Cherrypick from cagney_regbuf-20020515-branch 2002-05-15 21:19:22 UTC nobody 'This commit was manufactured by cvs2svn to create branch':
    gdb/blockframe.c
    gdb/frame.h
    gdb/gdbarch.c
    gdb/gdbarch.h
    gdb/gdbarch.sh
    gdb/infcmd.c
    gdb/inferior.h
    gdb/infrun.c
    gdb/regcache.c
    gdb/regcache.h
    gdb/valops.c
    gdb/value.h
    gdb/values.c
Cherrypick from master 2002-05-28 20:06:27 UTC Marek Michalkiewicz <marekm@amelek.gda.pl> '2002-05-28  Marek Michalkiewicz  <marekm@amelek.gda.pl>':
    ChangeLog
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    bfd/aout-target.h
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    bfd/archures.c
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    bfd/bfd.c
    bfd/binary.c
    bfd/bout.c
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    bfd/coff-sh.c
    bfd/coff64-rs6000.c
    bfd/coffcode.h
    bfd/config.bfd
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    bfd/configure
    bfd/configure.in
    bfd/cpu-dlx.c
    bfd/cpu-mips.c
    bfd/doc/ChangeLog
    bfd/doc/Makefile.in
    bfd/doc/chew.c
    bfd/elf-bfd.h
    bfd/elf-eh-frame.c
    bfd/elf.c
    bfd/elf32-arm.h
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    bfd/elfxx-ia64.c
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    bfd/hash.c
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    config.guess
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    config/mh-apollo68
    config/mh-dgux
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    gdb/testsuite/gdb.arch/altivec-abi.c
    gdb/testsuite/gdb.arch/altivec-abi.exp
    gdb/testsuite/gdb.arch/altivec-regs.c
    gdb/testsuite/gdb.arch/altivec-regs.exp
    gdb/testsuite/gdb.arch/configure
    gdb/testsuite/gdb.arch/configure.in
    gdb/testsuite/gdb.base/all-bin.exp
    gdb/testsuite/gdb.base/call-rt-st.exp
    gdb/testsuite/gdb.base/completion.exp
    gdb/testsuite/gdb.c++/inherit.exp
    gdb/testsuite/gdb.c++/local.exp
    gdb/testsuite/gdb.c++/m-data.cc
    gdb/testsuite/gdb.c++/m-data.exp
    gdb/testsuite/gdb.c++/try_catch.cc
    gdb/testsuite/gdb.c++/try_catch.exp
    gdb/testsuite/lib/gdb.exp
    gdb/v850-tdep.c
    gdb/version.in
    gdb/x86-64-tdep.c
    include/ChangeLog
    include/bfdlink.h
    include/dis-asm.h
    include/elf/ChangeLog
    include/elf/common.h
    include/elf/dlx.h
    include/elf/i386.h
    include/elf/ia64.h
    include/gdb/ChangeLog
    include/gdb/sim-d10v.h
    include/opcode/ChangeLog
    include/opcode/dlx.h
    include/opcode/h8300.h
    include/opcode/ia64.h
    include/opcode/mips.h
    include/opcode/sparc.h
    libiberty/ChangeLog
    libiberty/config.table
    opcodes/ChangeLog
    opcodes/Makefile.am
    opcodes/Makefile.in
    opcodes/acinclude.m4
    opcodes/aclocal.m4
    opcodes/arc-dis.c
    opcodes/arm-dis.c
    opcodes/configure
    opcodes/configure.in
    opcodes/disassemble.c
    opcodes/dlx-dis.c
    opcodes/fr30-asm.c
    opcodes/fr30-desc.c
    opcodes/fr30-dis.c
    opcodes/m32r-asm.c
    opcodes/m32r-desc.c
    opcodes/m32r-dis.c
    opcodes/m68k-dis.c
    opcodes/mips-dis.c
    opcodes/mips-opc.c
    opcodes/openrisc-asm.c
    opcodes/openrisc-desc.c
    opcodes/openrisc-dis.c
    opcodes/sh-dis.c
    opcodes/sh64-dis.c
    opcodes/xstormy16-asm.c
    opcodes/xstormy16-desc.c
    opcodes/xstormy16-dis.c
    sim/ChangeLog
    sim/MAINTAINERS
    sim/arm/ChangeLog
    sim/arm/Makefile.in
    sim/arm/armcopro.c
    sim/arm/armemu.c
    sim/arm/armos.c
    sim/arm/armsupp.c
    sim/arm/armvirt.c
    sim/arm/dbg_rdi.h
    sim/arm/thumbemu.c
    sim/arm/wrapper.c
    sim/common/ChangeLog
    sim/common/run-sim.h
    sim/common/run.c
    sim/common/sim-options.c
    sim/d10v/ChangeLog
    sim/d10v/Makefile.in
    sim/d10v/interp.c
    sim/d10v/simops.c
    sim/h8300/ChangeLog
    sim/h8300/compile.c
    sim/h8300/inst.h

1 files changed, 7741 insertions, 0 deletions

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
new file mode 100644
index 0000000..6f604f1
--- /dev/null
+++ b/gdb/breakpoint.c
@@ -0,0 +1,7741 @@
+/* Everything about breakpoints, for GDB.
+
+   Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
+   1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 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"
+#include "linespec.h"
+#include "completer.h"
+#include "gdb.h"
+#include "ui-out.h"
+
+#include "gdb-events.h"
+
+/* Prototypes for local functions. */
+
+static void until_break_command_continuation (struct continuation_arg *arg);
+
+static void catch_command_1 (char *, int, int);
+
+static void enable_delete_command (char *, int);
+
+static void enable_delete_breakpoint (struct breakpoint *);
+
+static void enable_once_command (char *, int);
+
+static void enable_once_breakpoint (struct breakpoint *);
+
+static void disable_command (char *, int);
+
+static void enable_command (char *, int);
+
+static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *));
+
+static void ignore_command (char *, int);
+
+static int breakpoint_re_set_one (PTR);
+
+static void clear_command (char *, int);
+
+static void catch_command (char *, int);
+
+static void handle_gnu_4_16_catch_command (char *, int, int);
+
+static struct symtabs_and_lines get_catch_sals (int);
+
+static void watch_command (char *, int);
+
+static int can_use_hardware_watchpoint (struct value *);
+
+extern void break_at_finish_command (char *, int);
+extern void break_at_finish_at_depth_command (char *, int);
+
+extern void tbreak_at_finish_command (char *, int);
+
+static void break_command_1 (char *, int, int);
+
+static void mention (struct breakpoint *);
+
+struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype);
+
+static void check_duplicates (struct breakpoint *);
+
+static void describe_other_breakpoints (CORE_ADDR, asection *);
+
+static void breakpoints_info (char *, int);
+
+static void breakpoint_1 (int, int);
+
+static bpstat bpstat_alloc (struct breakpoint *, bpstat);
+
+static int breakpoint_cond_eval (PTR);
+
+static void cleanup_executing_breakpoints (PTR);
+
+static void commands_command (char *, int);
+
+static void condition_command (char *, int);
+
+static int get_number_trailer (char **, int);
+
+void set_breakpoint_count (int);
+
+typedef enum
+  {
+    mark_inserted,
+    mark_uninserted
+  }
+insertion_state_t;
+
+static int remove_breakpoint (struct breakpoint *, insertion_state_t);
+
+static enum print_stop_action print_it_typical (bpstat);
+
+static enum print_stop_action print_bp_stop_message (bpstat bs);
+
+typedef struct
+  {
+    enum exception_event_kind kind;
+    int enable_p;
+  }
+args_for_catchpoint_enable;
+
+static int watchpoint_check (PTR);
+
+static int cover_target_enable_exception_callback (PTR);
+
+static void maintenance_info_breakpoints (char *, int);
+
+static void create_longjmp_breakpoint (char *);
+
+static void create_overlay_event_breakpoint (char *);
+
+static int hw_breakpoint_used_count (void);
+
+static int hw_watchpoint_used_count (enum bptype, int *);
+
+static void hbreak_command (char *, int);
+
+static void thbreak_command (char *, int);
+
+static void watch_command_1 (char *, int, int);
+
+static void rwatch_command (char *, int);
+
+static void awatch_command (char *, int);
+
+static void do_enable_breakpoint (struct breakpoint *, enum bpdisp);
+
+static void solib_load_unload_1 (char *hookname,
+				 int tempflag,
+				 char *dll_pathname,
+				 char *cond_string, enum bptype bp_kind);
+
+static void create_fork_vfork_event_catchpoint (int tempflag,
+						char *cond_string,
+						enum bptype bp_kind);
+
+static void break_at_finish_at_depth_command_1 (char *arg,
+						int flag, int from_tty);
+
+static void break_at_finish_command_1 (char *arg, int flag, int from_tty);
+
+static void stop_command (char *arg, int from_tty);
+
+static void stopin_command (char *arg, int from_tty);
+
+static void stopat_command (char *arg, int from_tty);
+
+static char *ep_find_event_name_end (char *arg);
+
+static char *ep_parse_optional_if_clause (char **arg);
+
+static char *ep_parse_optional_filename (char **arg);
+
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+static void catch_exec_command_1 (char *arg, int tempflag, int from_tty);
+#endif
+
+static void create_exception_catchpoint (int tempflag, char *cond_string,
+					 enum exception_event_kind ex_event,
+					 struct symtab_and_line *sal);
+
+static void catch_exception_command_1 (enum exception_event_kind ex_event, 
+				       char *arg, int tempflag, int from_tty);
+
+static void tcatch_command (char *arg, int from_tty);
+
+static void ep_skip_leading_whitespace (char **s);
+
+/* Prototypes for exported functions. */
+
+/* If FALSE, gdb will not use hardware support for watchpoints, even
+   if such is available. */
+static int can_use_hw_watchpoints;
+
+void _initialize_breakpoint (void);
+
+extern int addressprint;	/* Print machine addresses? */
+
+/* Are we executing breakpoint commands?  */
+static int executing_breakpoint_commands;
+
+/* Are overlay event breakpoints enabled? */
+static int overlay_events_enabled;
+
+/* 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;
+
+/* This function returns a pointer to the string representation of the
+   pathname of the dynamically-linked library that has just been
+   loaded.
+
+   This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
+   or undefined results are guaranteed.
+
+   This string's contents are only valid immediately after the
+   inferior has stopped in the dynamic linker hook, and becomes
+   invalid as soon as the inferior is continued.  Clients should make
+   a copy of this string if they wish to continue the inferior and
+   then access the string.  */
+
+#ifndef SOLIB_LOADED_LIBRARY_PATHNAME
+#define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
+#endif
+
+/* This function returns a pointer to the string representation of the
+   pathname of the dynamically-linked library that has just been
+   unloaded.
+
+   This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
+   TRUE, or undefined results are guaranteed.
+
+   This string's contents are only valid immediately after the
+   inferior has stopped in the dynamic linker hook, and becomes
+   invalid as soon as the inferior is continued.  Clients should make
+   a copy of this string if they wish to continue the inferior and
+   then access the string.  */
+
+#ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
+#define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
+#endif
+
+/* This function is called by the "catch load" command.  It allows the
+   debugger to be notified by the dynamic linker when a specified
+   library file (or any library file, if filename is NULL) is loaded.  */
+
+#ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
+#define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
+   error ("catch of library loads not yet implemented on this platform")
+#endif
+
+/* This function is called by the "catch unload" command.  It allows
+   the debugger to be notified by the dynamic linker when a specified
+   library file (or any library file, if filename is NULL) is
+   unloaded.  */
+
+#ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
+#define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
+   error ("catch of library unloads not yet implemented on this platform")
+#endif
+
+/* Set breakpoint count to NUM.  */
+
+void
+set_breakpoint_count (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 (void)
+{
+  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 "$" followed by the name
+   of a convenience variable.  Making it an expression wouldn't work well
+   for map_breakpoint_numbers (e.g. "4 + 5 + 6").
+   
+   TRAILER is a character which can be found after the number; most
+   commonly this is `-'.  If you don't want a trailer, use \0.  */ 
+static int
+get_number_trailer (char **pp, int trailer)
+{
+  int retval = 0;	/* default */
+  char *p = *pp;
+
+  if (p == NULL)
+    /* Empty line means refer to the last breakpoint.  */
+    return breakpoint_count;
+  else if (*p == '$')
+    {
+      /* Make a copy of the name, so we can null-terminate it
+         to pass to lookup_internalvar().  */
+      char *varname;
+      char *start = ++p;
+      struct value *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)
+	retval = (int) value_as_long (val);
+      else
+	{
+	  printf_filtered ("Convenience variable must have integer value.\n");
+	  retval = 0;
+	}
+    }
+  else
+    {
+      if (*p == '-')
+	++p;
+      while (*p >= '0' && *p <= '9')
+	++p;
+      if (p == *pp)
+	/* There is no number here.  (e.g. "cond a == b").  */
+	{
+	  /* Skip non-numeric token */
+	  while (*p && !isspace((int) *p))
+	    ++p;
+	  /* Return zero, which caller must interpret as error. */
+	  retval = 0;
+	}
+      else
+	retval = atoi (*pp);
+    }
+  if (!(isspace (*p) || *p == '\0' || *p == trailer))
+    {
+      /* Trailing junk: return 0 and let caller print error msg. */
+      while (!(isspace (*p) || *p == '\0' || *p == trailer))
+	++p;
+      retval = 0;
+    }
+  while (isspace (*p))
+    p++;
+  *pp = p;
+  return retval;
+}
+
+
+/* Like get_number_trailer, but don't allow a trailer.  */
+int
+get_number (char **pp)
+{
+  return get_number_trailer (pp, '\0');
+}
+
+/* Parse a number or a range.
+ * A number will be of the form handled by get_number.
+ * A range will be of the form <number1> - <number2>, and 
+ * will represent all the integers between number1 and number2,
+ * inclusive.
+ *
+ * While processing a range, this fuction is called iteratively;
+ * At each call it will return the next value in the range.
+ *
+ * At the beginning of parsing a range, the char pointer PP will
+ * be advanced past <number1> and left pointing at the '-' token.
+ * Subsequent calls will not advance the pointer until the range
+ * is completed.  The call that completes the range will advance
+ * pointer PP past <number2>.
+ */
+
+int 
+get_number_or_range (char **pp)
+{
+  static int last_retval, end_value;
+  static char *end_ptr;
+  static int in_range = 0;
+
+  if (**pp != '-')
+    {
+      /* Default case: pp is pointing either to a solo number, 
+	 or to the first number of a range.  */
+      last_retval = get_number_trailer (pp, '-');
+      if (**pp == '-')
+	{
+	  char **temp;
+
+	  /* This is the start of a range (<number1> - <number2>).
+	     Skip the '-', parse and remember the second number,
+	     and also remember the end of the final token.  */
+
+	  temp = &end_ptr; 
+	  end_ptr = *pp + 1; 
+	  while (isspace ((int) *end_ptr))
+	    end_ptr++;	/* skip white space */
+	  end_value = get_number (temp);
+	  if (end_value < last_retval) 
+	    {
+	      error ("inverted range");
+	    }
+	  else if (end_value == last_retval)
+	    {
+	      /* degenerate range (number1 == number2).  Advance the
+		 token pointer so that the range will be treated as a
+		 single number.  */ 
+	      *pp = end_ptr;
+	    }
+	  else
+	    in_range = 1;
+	}
+    }
+  else if (! in_range)
+    error ("negative value");
+  else
+    {
+      /* pp points to the '-' that betokens a range.  All
+	 number-parsing has already been done.  Return the next
+	 integer value (one greater than the saved previous value).
+	 Do not advance the token pointer 'pp' until the end of range
+	 is reached.  */
+
+      if (++last_retval == end_value)
+	{
+	  /* End of range reached; advance token pointer.  */
+	  *pp = end_ptr;
+	  in_range = 0;
+	}
+    }
+  return last_retval;
+}
+
+
+
+/* condition N EXP -- set break condition of breakpoint N to EXP.  */
+
+static void
+condition_command (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);
+  if (bnum == 0)
+    error ("Bad breakpoint argument: '%s'", arg);
+
+  ALL_BREAKPOINTS (b)
+    if (b->number == bnum)
+    {
+      if (b->cond)
+	{
+	  xfree (b->cond);
+	  b->cond = 0;
+	}
+      if (b->cond_string != NULL)
+	xfree (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 (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 (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 ("reading through apparently deleted breakpoint #%d?", 
+	       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 (void)
+{
+  register struct breakpoint *b, *temp;
+  int return_val = 0;	/* return success code. */
+  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->enable_state == bp_permanent)
+      /* Permanent breakpoints cannot be inserted or removed.  */
+      continue;
+    else 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_state != bp_disabled
+	&& b->enable_state != bp_shlib_disabled
+	&& b->enable_state != bp_call_disabled
+	&& !b->inserted
+	&& !b->duplicate)
+      {
+	/* "Normal" instruction breakpoint: either the standard
+	   trap-instruction bp (bp_breakpoint), or a
+	   bp_hardware_breakpoint.  */
+
+	/* First check to see if we have to handle an overlay.  */
+	if (overlay_debugging == ovly_off
+	    || b->section == NULL
+	    || !(section_is_overlay (b->section)))
+	  {
+	    /* No overlay handling: just set the breakpoint.  */
+
+	    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);
+	  }
+	else
+	  {
+	    /* This breakpoint is in an overlay section.  
+	       Shall we set a breakpoint at the LMA?  */
+	    if (!overlay_events_enabled)
+	      {
+		/* Yes -- overlay event support is not active, 
+		   so we must try to set a breakpoint at the LMA.
+		   This will not work for a hardware breakpoint.  */
+		if (b->type == bp_hardware_breakpoint)
+		  warning ("hardware breakpoint %d not supported in overlay!\n",
+			   b->number);
+		else
+		  {
+		    CORE_ADDR addr = overlay_unmapped_address (b->address, 
+							       b->section);
+		    /* Set a software (trap) breakpoint at the LMA.  */
+		    val = target_insert_breakpoint (addr, b->shadow_contents);
+		    if (val != 0)
+		      warning ("overlay breakpoint %d failed: in ROM?", 
+			       b->number);
+		  }
+	      }
+	    /* Shall we set a breakpoint at the VMA? */
+	    if (section_is_mapped (b->section))
+	      {
+		/* Yes.  This overlay section is mapped into memory.  */
+		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);
+	      }
+	    else
+	      {
+		/* No.  This breakpoint will not be inserted.  
+		   No error, but do not mark the bp as 'inserted'.  */
+		continue;
+	      }
+	  }
+
+	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_state = bp_shlib_disabled;
+		if (!disabled_breaks)
+		  {
+		    target_terminal_ours_for_output ();
+		    warning ("Cannot insert breakpoint %d:", b->number);
+		    warning ("Temporarily disabling shared library breakpoints:");
+		  }
+		disabled_breaks = 1;
+		warning ("breakpoint #%d ", b->number);
+	      }
+	    else
+#endif
+	      {
+		target_terminal_ours_for_output ();
+		warning ("Cannot insert breakpoint %d:", b->number);
+#ifdef ONE_PROCESS_WRITETEXT
+		warning ("The same program may be running in another process.");
+#endif
+		memory_error (val, b->address);	   /* which bombs us out */
+	      }
+	  }
+	else
+	  b->inserted = 1;
+
+	if (val)
+	  return_val = val;	/* remember failure */
+      }
+    else if (ep_is_exception_catchpoint (b)
+	     && b->enable_state != bp_disabled
+	     && b->enable_state != bp_shlib_disabled
+	     && b->enable_state != bp_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. */
+	/* Format possible error message */
+	sprintf (message, message1, b->number);
+
+	val = target_insert_breakpoint (b->address, b->shadow_contents);
+	if (val)
+	  {
+	    /* Couldn't set breakpoint for some reason */
+	    target_terminal_ours_for_output ();
+	    warning ("Cannot insert catchpoint %d; disabling it.",
+		     b->number);
+	    b->enable_state = bp_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_p = 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 ();
+		warning ("Cannot insert catchpoint %d; disabling it.",
+			 b->number);
+		b->enable_state = bp_disabled;
+	      }
+	  }
+
+	if (val)
+	  return_val = val;	/* remember failure */
+      }
+
+    else if ((b->type == bp_hardware_watchpoint ||
+	      b->type == bp_read_watchpoint ||
+	      b->type == bp_access_watchpoint)
+	     && b->enable_state == bp_enabled
+	     && b->disposition != disp_del_at_next_stop
+	     && !b->inserted
+	     && !b->duplicate)
+      {
+	struct frame_info *saved_frame;
+	int saved_level, within_current_scope;
+	struct value *mark = value_mark ();
+	struct value *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 = frame_relative_level (selected_frame);
+
+	/* 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);
+	  }
+
+	if (within_current_scope)
+	  {
+	    /* Evaluate the expression and cut the chain of values
+	       produced off from the value chain.
+
+	       Make sure the value returned isn't lazy; we use
+	       laziness to determine what memory GDB actually needed
+	       in order to compute the value of the expression.  */
+	    v = evaluate_expression (b->exp);
+	    VALUE_CONTENTS(v);
+	    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, and GDB actually needed
+                   its contents to evaluate the expression, then we
+                   must watch it.  */
+		if (VALUE_LVAL (v) == lval_memory
+		    && ! VALUE_LAZY (v))
+		  {
+		    struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+		    /* We only watch structs and arrays if user asked
+		       for it explicitly, never if they just happen to
+		       appear in the middle of some value chain.  */
+		    if (v == b->val_chain
+			|| (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+			    && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+		      {
+			CORE_ADDR addr;
+			int len, type;
+
+			addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+			len = TYPE_LENGTH (VALUE_TYPE (v));
+			type   = hw_write;
+			if (b->type == bp_read_watchpoint)
+			  type = hw_read;
+			else if (b->type == bp_access_watchpoint)
+			  type = hw_access;
+
+			val = target_insert_watchpoint (addr, len, type);
+			if (val == -1)
+			  {
+			    /* Don't exit the loop, try to insert
+			       every value on the value chain.  That's
+			       because we will be removing all the
+			       watches below, and removing a
+			       watchpoint we didn't insert could have
+			       adverse effects.  */
+			    b->inserted = 0;
+			  }
+			val = 0;
+		      }
+		  }
+	      }
+	    /* Failure to insert a watchpoint on any memory value in the
+	       value chain brings us here.  */
+	    if (!b->inserted)
+	      {
+		remove_breakpoint (b, mark_uninserted);
+		warning ("Could not insert hardware watchpoint %d.",
+			 b->number);
+		val = -1;
+	      }               
+	  }
+	else
+	  {
+	    printf_filtered ("Hardware watchpoint %d deleted ", b->number);
+	    printf_filtered ("because the program has left the block \n");
+	    printf_filtered ("in which its expression is valid.\n");
+	    if (b->related_breakpoint)
+	      b->related_breakpoint->disposition = disp_del_at_next_stop;
+	    b->disposition = disp_del_at_next_stop;
+	  }
+
+	/* Restore the frame and level.  */
+	if ((saved_frame != selected_frame) ||
+	    (saved_level != frame_relative_level (selected_frame)))
+	  select_frame (saved_frame);
+
+	if (val)
+	  return_val = val;	/* remember failure */
+      }
+    else if ((b->type == bp_catch_fork
+	      || b->type == bp_catch_vfork
+	      || b->type == bp_catch_exec)
+	     && b->enable_state == bp_enabled
+	     && !b->inserted
+	     && !b->duplicate)
+      {
+	val = -1;
+	switch (b->type)
+	  {
+	  case bp_catch_fork:
+	    val = target_insert_fork_catchpoint (PIDGET (inferior_ptid));
+	    break;
+	  case bp_catch_vfork:
+	    val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
+	    break;
+	  case bp_catch_exec:
+	    val = target_insert_exec_catchpoint (PIDGET (inferior_ptid));
+	    break;
+	  default:
+	    warning ("Internal error, %s line %d.", __FILE__, __LINE__);
+	    break;
+	  }
+	if (val < 0)
+	  {
+	    target_terminal_ours_for_output ();
+	    warning ("Cannot insert catchpoint %d.", b->number);
+	  }
+	else
+	  b->inserted = 1;
+
+	if (val)
+	  return_val = val;	/* remember failure */
+      }
+  }
+
+  return return_val;
+}
+
+
+int
+remove_breakpoints (void)
+{
+  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
+remove_hw_watchpoints (void)
+{
+  register struct breakpoint *b;
+  int val;
+
+  ALL_BREAKPOINTS (b)
+  {
+    if (b->inserted
+	&& (b->type == bp_hardware_watchpoint
+	    || b->type == bp_read_watchpoint
+	    || b->type == bp_access_watchpoint))
+      {
+	val = remove_breakpoint (b, mark_uninserted);
+	if (val != 0)
+	  return val;
+      }
+  }
+  return 0;
+}
+
+int
+reattach_breakpoints (int pid)
+{
+  register struct breakpoint *b;
+  int val;
+  struct cleanup *old_chain = save_inferior_ptid ();
+
+  /* Set inferior_ptid; remove_breakpoint uses this global.  */
+  inferior_ptid = pid_to_ptid (pid);
+  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)
+	  {
+	    do_cleanups (old_chain);
+	    return val;
+	  }
+      }
+  }
+  do_cleanups (old_chain);
+  return 0;
+}
+
+void
+update_breakpoints_after_exec (void)
+{
+  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;
+      }
+
+    /* Thread event breakpoints must be set anew after an exec(),
+       as must overlay event breakpoints.  */
+    if (b->type == bp_thread_event || b->type == bp_overlay_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.
+
+       Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly
+       valid code address on some platforms (like the mn10200 and
+       mn10300 simulators).  We shouldn't assign any special
+       interpretation to a breakpoint with a zero address.  And in
+       fact, GDB doesn't --- I can't see what that comment above is
+       talking about.  As far as I can tell, setting the address of a
+       bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero
+       is meaningless, since those are implemented with HP-UX kernel
+       hackery, not by storing breakpoint instructions somewhere.  */
+    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.
+
+       Jim Blandy <jimb@redhat.com>: As explained above in the comment
+       for bp_catch_exec and friends, I'm pretty sure this is entirely
+       unnecessary.  A call to breakpoint_re_set_one always recomputes
+       the breakpoint's address from scratch, or deletes it if it can't.
+       So I think this assignment could be deleted without effect.  */
+    b->address = (CORE_ADDR) NULL;
+  }
+  /* FIXME what about longjmp breakpoints?  Re-create them here?  */
+  create_overlay_event_breakpoint ("_ovly_debug_event");
+}
+
+int
+detach_breakpoints (int pid)
+{
+  register struct breakpoint *b;
+  int val;
+  struct cleanup *old_chain = save_inferior_ptid ();
+
+  if (pid == PIDGET (inferior_ptid))
+    error ("Cannot detach breakpoints of inferior_ptid");
+
+  /* Set inferior_ptid; remove_breakpoint uses this global.  */
+  inferior_ptid = pid_to_ptid (pid);
+  ALL_BREAKPOINTS (b)
+  {
+    if (b->inserted)
+      {
+	val = remove_breakpoint (b, mark_inserted);
+	if (val != 0)
+	  {
+	    do_cleanups (old_chain);
+	    return val;
+	  }
+      }
+  }
+  do_cleanups (old_chain);
+  return 0;
+}
+
+static int
+remove_breakpoint (struct breakpoint *b, insertion_state_t is)
+{
+  int val;
+
+  if (b->enable_state == bp_permanent)
+    /* Permanent breakpoints cannot be inserted or removed.  */
+    return 0;
+
+  if (b->type == bp_none)
+    warning ("attempted to remove apparently deleted breakpoint #%d?", 
+	     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)
+    {
+      /* "Normal" instruction breakpoint: either the standard
+	 trap-instruction bp (bp_breakpoint), or a
+	 bp_hardware_breakpoint.  */
+
+      /* First check to see if we have to handle an overlay.  */
+      if (overlay_debugging == ovly_off
+	  || b->section == NULL
+	  || !(section_is_overlay (b->section)))
+	{
+	  /* No overlay handling: just remove the breakpoint.  */
+
+	  if (b->type == bp_hardware_breakpoint)
+	    val = target_remove_hw_breakpoint (b->address, 
+					       b->shadow_contents);
+	  else
+	    val = target_remove_breakpoint (b->address, b->shadow_contents);
+	}
+      else
+	{
+	  /* This breakpoint is in an overlay section.  
+	     Did we set a breakpoint at the LMA?  */
+	  if (!overlay_events_enabled)
+	      {
+		/* Yes -- overlay event support is not active, so we
+		   should have set a breakpoint at the LMA.  Remove it.  
+		*/
+		CORE_ADDR addr = overlay_unmapped_address (b->address, 
+							   b->section);
+		/* Ignore any failures: if the LMA is in ROM, we will
+		   have already warned when we failed to insert it.  */
+		if (b->type != bp_hardware_breakpoint)
+		  target_remove_hw_breakpoint (addr, b->shadow_contents);
+		else
+		  target_remove_breakpoint (addr, b->shadow_contents);
+	      }
+	  /* Did we set a breakpoint at the VMA? 
+	     If so, we will have marked the breakpoint 'inserted'.  */
+	  if (b->inserted)
+	    {
+	      /* Yes -- remove it.  Previously we did not bother to
+		 remove the breakpoint if the section had been
+		 unmapped, but let's not rely on that being safe.  We
+		 don't know what the overlay manager might do.  */
+	      if (b->type == bp_hardware_breakpoint)
+		val = target_remove_hw_breakpoint (b->address, 
+						   b->shadow_contents);
+	      else
+		val = target_remove_breakpoint (b->address,
+						b->shadow_contents);
+	    }
+	  else
+	    {
+	      /* No -- not inserted, so no need to remove.  No error.  */
+	      val = 0;
+	    }
+	}
+      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_state == bp_enabled
+	   && !b->duplicate)
+    {
+      struct value *v;
+      struct value *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 (VALUE_LVAL (v) == lval_memory
+	      && ! VALUE_LAZY (v))
+	    {
+	      struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+	      if (v == b->val_chain
+		  || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+		      && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+		{
+		  CORE_ADDR addr;
+		  int len, type;
+
+		  addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+		  len = TYPE_LENGTH (VALUE_TYPE (v));
+		  type   = hw_write;
+		  if (b->type == bp_read_watchpoint)
+		    type = hw_read;
+		  else if (b->type == bp_access_watchpoint)
+		    type = hw_access;
+
+		  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 ("Could not remove hardware watchpoint %d.",
+		 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_state == bp_enabled
+	   && !b->duplicate)
+    {
+      val = -1;
+      switch (b->type)
+	{
+	case bp_catch_fork:
+	  val = target_remove_fork_catchpoint (PIDGET (inferior_ptid));
+	  break;
+	case bp_catch_vfork:
+	  val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid));
+	  break;
+	case bp_catch_exec:
+	  val = target_remove_exec_catchpoint (PIDGET (inferior_ptid));
+	  break;
+	default:
+	  warning ("Internal error, %s line %d.", __FILE__, __LINE__);
+	  break;
+	}
+      if (val)
+	return val;
+      b->inserted = (is == mark_inserted);
+    }
+  else if ((b->type == bp_catch_catch ||
+	    b->type == bp_catch_throw)
+	   && b->enable_state == bp_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_state == bp_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 (void)
+{
+  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 (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.");
+      warning ("You must reinsert them explicitly.");
+      warning_needed = 0;
+    }
+}
+
+/* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
+   exists at PC.  It returns ordinary_breakpoint_here if it's an
+   ordinary breakpoint, or permanent_breakpoint_here if it's a
+   permanent breakpoint.
+   - When continuing from a location with an ordinary breakpoint, we
+     actually single step once before calling insert_breakpoints.
+   - When continuing from a localion with a permanent breakpoint, we
+     need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
+     the target, to advance the PC past the breakpoint.  */
+
+enum breakpoint_here
+breakpoint_here_p (CORE_ADDR pc)
+{
+  register struct breakpoint *b;
+  int any_breakpoint_here = 0;
+
+  ALL_BREAKPOINTS (b)
+    if ((b->enable_state == bp_enabled
+	 || b->enable_state == bp_permanent)
+	&& 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 if (b->enable_state == bp_permanent)
+	  return permanent_breakpoint_here;
+	else
+	  any_breakpoint_here = 1;
+      }
+
+  return any_breakpoint_here ? ordinary_breakpoint_here : 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 (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 (struct frame_info *frame)
+{
+  struct breakpoint *b;
+
+  if (!CALL_DUMMY_P)
+    return 0;
+
+  if (USE_GENERIC_DUMMY_FRAMES)
+    return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame);
+
+  ALL_BREAKPOINTS (b)
+  {
+    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_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE))
+	&& frame->pc <= b->address)
+      return 1;
+  }
+  return 0;
+}
+
+/* breakpoint_thread_match (PC, PID) returns true if the breakpoint at
+   PC is valid for process/thread PID.  */
+
+int
+breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid)
+{
+  struct breakpoint *b;
+  int thread;
+
+  thread = pid_to_thread_id (ptid);
+
+  ALL_BREAKPOINTS (b)
+    if (b->enable_state != bp_disabled
+	&& b->enable_state != bp_shlib_disabled
+	&& b->enable_state != bp_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 (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 (struct breakpoint *ep)
+{
+  return
+    (ep->type == bp_catch_load)
+    || (ep->type == bp_catch_unload);
+}
+
+int
+ep_is_exception_catchpoint (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 (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);
+      xfree (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 (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 (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 (bpstat bsp)
+{
+  int current_thread;
+
+  if (bsp == NULL)
+    error ("Internal error (bpstat_find_step_resume_breakpoint)");
+
+  current_thread = pid_to_thread_id (inferior_ptid);
+
+  for (; bsp != NULL; bsp = bsp->next)
+    {
+      if ((bsp->breakpoint_at != NULL) &&
+	  (bsp->breakpoint_at->type == bp_step_resume) &&
+	  (bsp->breakpoint_at->thread == current_thread || 
+	   bsp->breakpoint_at->thread == -1))
+	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 (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 (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 (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 (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 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 values.
+
+   Current scheme: When we stop, bpstat_print() is called.  It loops
+   through the bpstat list of things causing this stop, calling the
+   print_bp_stop_message function on each one. The behavior of the
+   print_bp_stop_message function depends on the print_it field of
+   bpstat. If such field so indicates, call this function here.
+
+   Return values from this routine (ultimately used by bpstat_print()
+   and normal_stop() to decide what to do): 
+   PRINT_NOTHING: Means we already printed all we needed to print,
+   don't print anything else.
+   PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
+   that something to be followed by a location.
+   PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
+   that something to be followed by a location.
+   PRINT_UNKNOWN: Means we printed nothing or we need to do some more
+   analysis.  */
+
+static enum print_stop_action
+print_it_typical (bpstat bs)
+{
+  struct cleanup *old_chain;
+  struct ui_stream *stb;
+  stb = ui_out_stream_new (uiout);
+  old_chain = make_cleanup_ui_out_stream_delete (stb);
+  /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
+     which has since been deleted.  */
+  if (bs->breakpoint_at == NULL)
+    return PRINT_UNKNOWN;
+
+  switch (bs->breakpoint_at->type)
+    {
+    case bp_breakpoint:
+    case bp_hardware_breakpoint:
+      annotate_breakpoint (bs->breakpoint_at->number);
+      ui_out_text (uiout, "\nBreakpoint ");
+      if (ui_out_is_mi_like_p (uiout))
+	ui_out_field_string (uiout, "reason", "breakpoint-hit");
+      ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number);
+      ui_out_text (uiout, ", ");
+      return PRINT_SRC_AND_LOC;
+      break;
+
+    case bp_shlib_event:
+      /* Did we stop because the user set the stop_on_solib_events
+	 variable?  (If so, we report this as a generic, "Stopped due
+	 to shlib event" message.) */
+      printf_filtered ("Stopped due to shared library event\n");
+      return PRINT_NOTHING;
+      break;
+
+    case bp_thread_event:
+      /* Not sure how we will get here. 
+	 GDB should not stop for these breakpoints.  */
+      printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n");
+      return PRINT_NOTHING;
+      break;
+
+    case bp_overlay_event:
+      /* By analogy with the thread event, GDB should not stop for these. */
+      printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n");
+      return PRINT_NOTHING;
+      break;
+
+    case bp_catch_load:
+      annotate_catchpoint (bs->breakpoint_at->number);
+      printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+      printf_filtered ("loaded");
+      printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
+      return PRINT_SRC_AND_LOC;
+      break;
+
+    case bp_catch_unload:
+      annotate_catchpoint (bs->breakpoint_at->number);
+      printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+      printf_filtered ("unloaded");
+      printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
+      return PRINT_SRC_AND_LOC;
+      break;
+
+    case bp_catch_fork:
+      annotate_catchpoint (bs->breakpoint_at->number);
+      printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+      printf_filtered ("forked");
+      printf_filtered (" process %d), ", 
+		       bs->breakpoint_at->forked_inferior_pid);
+      return PRINT_SRC_AND_LOC;
+      break;
+
+    case bp_catch_vfork:
+      annotate_catchpoint (bs->breakpoint_at->number);
+      printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+      printf_filtered ("vforked");
+      printf_filtered (" process %d), ", 
+		       bs->breakpoint_at->forked_inferior_pid);
+      return PRINT_SRC_AND_LOC;
+      break;
+
+    case 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 PRINT_SRC_AND_LOC;
+      break;
+
+    case 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");
+	  /* don't bother to print location frame info */
+	  return PRINT_SRC_ONLY;
+	}
+      else
+	{
+	  /* really throw, some other bpstat will handle it */
+	  return PRINT_UNKNOWN;	
+	}
+      break;
+
+    case 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");
+	  /* don't bother to print location frame info */
+	  return PRINT_SRC_ONLY; 
+	}
+      else
+	{
+	  /* really catch, some other bpstat will handle it */
+	  return PRINT_UNKNOWN;	
+	}
+      break;
+
+    case bp_watchpoint:
+    case bp_hardware_watchpoint:
+      if (bs->old_val != NULL)
+	{
+	  annotate_watchpoint (bs->breakpoint_at->number);
+	  if (ui_out_is_mi_like_p (uiout))
+	    ui_out_field_string (uiout, "reason", "watchpoint-trigger");
+	  mention (bs->breakpoint_at);
+	  ui_out_tuple_begin (uiout, "value");
+	  ui_out_text (uiout, "\nOld value = ");
+	  value_print (bs->old_val, stb->stream, 0, Val_pretty_default);
+	  ui_out_field_stream (uiout, "old", stb);
+	  ui_out_text (uiout, "\nNew value = ");
+	  value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default);
+	  ui_out_field_stream (uiout, "new", stb);
+	  ui_out_tuple_end (uiout);
+	  ui_out_text (uiout, "\n");
+	  value_free (bs->old_val);
+	  bs->old_val = NULL;
+	}
+      /* More than one watchpoint may have been triggered.  */
+      return PRINT_UNKNOWN;
+      break;
+
+    case bp_read_watchpoint:
+      if (ui_out_is_mi_like_p (uiout))
+	ui_out_field_string (uiout, "reason", "read-watchpoint-trigger");
+      mention (bs->breakpoint_at);
+      ui_out_tuple_begin (uiout, "value");
+      ui_out_text (uiout, "\nValue = ");
+      value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default);
+      ui_out_field_stream (uiout, "value", stb);
+      ui_out_tuple_end (uiout);
+      ui_out_text (uiout, "\n");
+      return PRINT_UNKNOWN;
+      break;
+
+    case bp_access_watchpoint:
+      if (bs->old_val != NULL)     
+	{
+	  annotate_watchpoint (bs->breakpoint_at->number);
+	  if (ui_out_is_mi_like_p (uiout))
+	    ui_out_field_string (uiout, "reason", "access-watchpoint-trigger");
+	  mention (bs->breakpoint_at);
+	  ui_out_tuple_begin (uiout, "value");
+	  ui_out_text (uiout, "\nOld value = ");
+	  value_print (bs->old_val, stb->stream, 0, Val_pretty_default);
+	  ui_out_field_stream (uiout, "old", stb);
+	  value_free (bs->old_val);
+	  bs->old_val = NULL;
+	  ui_out_text (uiout, "\nNew value = ");
+	}
+      else 
+	{
+	  mention (bs->breakpoint_at);
+	  if (ui_out_is_mi_like_p (uiout))
+	    ui_out_field_string (uiout, "reason", "access-watchpoint-trigger");
+	  ui_out_tuple_begin (uiout, "value");
+	  ui_out_text (uiout, "\nValue = ");
+	}
+      value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default);
+      ui_out_field_stream (uiout, "new", stb);
+      ui_out_tuple_end (uiout);
+      ui_out_text (uiout, "\n");
+      return PRINT_UNKNOWN;
+      break;
+
+    /* Fall through, we don't deal with these types of breakpoints
+       here. */
+
+    case bp_finish:
+      if (ui_out_is_mi_like_p (uiout))
+	ui_out_field_string (uiout, "reason", "function-finished");
+      return PRINT_UNKNOWN;
+      break;
+
+    case bp_until:
+      if (ui_out_is_mi_like_p (uiout))
+	ui_out_field_string (uiout, "reason", "location-reached");
+      return PRINT_UNKNOWN;
+      break;
+
+    case bp_none:
+    case bp_longjmp:
+    case bp_longjmp_resume:
+    case bp_step_resume:
+    case bp_through_sigtramp:
+    case bp_watchpoint_scope:
+    case bp_call_dummy:
+    default:
+      return PRINT_UNKNOWN;
+    }
+}
+
+/* Generic routine for printing messages indicating why we
+   stopped. The behavior of this function depends on the value
+   'print_it' in the bpstat structure.  Under some circumstances we
+   may decide not to print anything here and delegate the task to
+   normal_stop(). */
+
+static enum print_stop_action
+print_bp_stop_message (bpstat bs)
+{
+  switch (bs->print_it)
+    {
+    case print_it_noop:
+      /* Nothing should be printed for this bpstat entry. */
+      return PRINT_UNKNOWN;
+      break;
+
+    case print_it_done:
+      /* We still want to print the frame, but we already printed the
+         relevant messages. */
+      return PRINT_SRC_AND_LOC;
+      break;
+
+    case print_it_normal:
+      /* Normal case, we handle everything in print_it_typical. */
+      return print_it_typical (bs);
+      break;
+    default:
+      internal_error (__FILE__, __LINE__,
+		      "print_bp_stop_message: unrecognized enum value");
+      break;
+    }
+}
+
+/* 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 generic print routine for printing a message
+   about reasons for stopping.  This will print (for example) the
+   "Breakpoint n," part of the output.  The return value of this
+   routine is one of:
+
+   PRINT_UNKNOWN: Means we printed nothing
+   PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
+   code to print the location. An example is 
+   "Breakpoint 1, " which should be followed by
+   the location.
+   PRINT_SRC_ONLY: 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.  
+   PRINT_NOTHING: We have done some printing and we don't need any 
+   further info to be printed.*/
+
+enum print_stop_action
+bpstat_print (bpstat bs)
+{
+  int 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).  */
+  for (; bs; bs = bs->next)
+    {
+      val = print_bp_stop_message (bs);
+      if (val == PRINT_SRC_ONLY 
+	  || val == PRINT_SRC_AND_LOC 
+	  || val == PRINT_NOTHING)
+	return val;
+    }
+
+  /* We reached the end of the chain, or we got a null BS to start
+     with and nothing was printed. */
+  return PRINT_UNKNOWN;
+}
+
+/* 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 (PTR exp)
+{
+  struct value *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 (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 (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);
+      /* in_function_epilogue_p() returns a non-zero value if we're still
+	 in the function but the stack frame has already been invalidated.
+	 Since we can't rely on the values of local variables after the
+	 stack has been destroyed, we are treating the watchpoint in that
+	 state as `not changed' without further checking. */
+      if (within_current_scope && fr == get_current_frame ()
+          && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ()))
+	return WP_VALUE_NOT_CHANGED;
+      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);
+    }
+
+  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.  */
+
+      struct value *mark = value_mark ();
+      struct value *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).  */
+      /* We print all the stop information in print_it_typical(), but
+	 in this case, by the time we call print_it_typical() this bp
+	 will be deleted already. So we have no choice but print the
+	 information here. */
+      if (ui_out_is_mi_like_p (uiout))
+	ui_out_field_string (uiout, "reason", "watchpoint-scope");
+      ui_out_text (uiout, "\nWatchpoint ");
+      ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number);
+      ui_out_text (uiout, " deleted because the program has left the block in\n\
+which its expression is valid.\n");     
+
+      if (b->related_breakpoint)
+	b->related_breakpoint->disposition = disp_del_at_next_stop;
+      b->disposition = disp_del_at_next_stop;
+
+      return WP_DELETED;
+    }
+}
+
+/* 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 (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.  
+     The "not_a_breakpoint" argument is meant to distinguish 
+     between a breakpoint trap event and a trace/singlestep
+     trap event.  For a trace/singlestep trap event, we would
+     not want to subtract DECR_PC_AFTER_BREAK from the PC. */
+
+  bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P () ? 
+                   0 : DECR_PC_AFTER_BREAK);
+
+  ALL_BREAKPOINTS_SAFE (b, temp)
+  {
+    if (b->enable_state == bp_disabled
+	|| b->enable_state == bp_shlib_disabled
+	|| b->enable_state == bp_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 */
+	  continue;
+	if (overlay_debugging		/* unmapped overlay section */
+	    && section_is_overlay (b->section) 
+	    && !section_is_mapped (b->section))
+	  continue;
+      }
+
+    if (b->type == bp_hardware_breakpoint)
+      {
+	if (b->address != (*pc - DECR_PC_AFTER_HW_BREAK))
+	  continue;
+	if (overlay_debugging		/* unmapped overlay section */
+	    && section_is_overlay (b->section) 
+	    && !section_is_mapped (b->section))
+	  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 (PIDGET (inferior_ptid))
+	    || ((b->dll_pathname != NULL)
+		&& (strcmp (b->dll_pathname, 
+			    SOLIB_LOADED_LIBRARY_PATHNAME (
+			      PIDGET (inferior_ptid)))
+		    != 0)))
+#endif
+      )
+      continue;
+
+    if ((b->type == bp_catch_unload)
+#if defined(SOLIB_HAVE_UNLOAD_EVENT)
+	&& (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid))
+	    || ((b->dll_pathname != NULL)
+		&& (strcmp (b->dll_pathname, 
+			    SOLIB_UNLOADED_LIBRARY_PATHNAME (
+			      PIDGET (inferior_ptid)))
+		    != 0)))
+#endif
+      )
+      continue;
+
+    if ((b->type == bp_catch_fork)
+	&& !target_has_forked (PIDGET (inferior_ptid),
+	                       &b->forked_inferior_pid))
+      continue;
+
+    if ((b->type == bp_catch_vfork)
+	&& !target_has_vforked (PIDGET (inferior_ptid),
+	                        &b->forked_inferior_pid))
+      continue;
+
+    if ((b->type == bp_catch_exec)
+	&& !target_has_execd (PIDGET (inferior_ptid), &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.  */
+	    /* Actually this is superfluous, because by the time we
+               call print_it_typical() the wp will be already deleted,
+               and the function will return immediately. */
+	    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;
+	    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 = disp_del_at_next_stop;
+	    b->disposition = disp_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;
+	struct value *v;
+	int found = 0;
+
+	addr = target_stopped_data_address ();
+	if (addr == 0)
+	  continue;
+	for (v = b->val_chain; v; v = v->next)
+	  {
+	    if (VALUE_LVAL (v) == lval_memory
+		&& ! VALUE_LAZY (v))
+	      {
+		struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+		if (v == b->val_chain
+		    || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+			&& TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+		  {
+		    CORE_ADDR vaddr;
+
+		    vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+		    /* Exact match not required.  Within range is
+                       sufficient.  */
+		    if (addr >= vaddr &&
+			addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v)))
+		      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:
+	      if (b->type == bp_read_watchpoint)
+		{
+		  /* Don't stop: read watchpoints shouldn't fire if
+		     the value has changed.  This is for targets which
+		     cannot set read-only watchpoints.  */
+		  bs->print_it = print_it_noop;
+		  bs->stop = 0;
+		  continue;
+		}
+	      ++(b->hit_count);
+	      break;
+	    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 = disp_del_at_next_stop;
+	      b->disposition = disp_del_at_next_stop;
+	      /* We've already printed what needs to be printed.  */
+	      bs->print_it = print_it_done;
+	      break;
+	    }
+	else	/* found == 0 */
+	  {
+	    /* This is a case where some watchpoint(s) triggered,
+	       but not at the address of this watchpoint (FOUND
+	       was left zero).  So don't print anything for this
+	       watchpoint.  */
+	    bs->print_it = print_it_noop;
+	    bs->stop = 0;
+            continue;
+	  }
+      }
+    else
+      {
+	/* By definition, an encountered breakpoint is a triggered
+	   breakpoint. */
+	++(b->hit_count);
+
+	real_breakpoint = 1;
+      }
+
+    if (b->frame &&
+       b->frame != (get_current_frame ())->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 ());
+	    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--;
+	    annotate_ignore_count_change ();
+	    bs->stop = 0;
+	  }
+	else
+	  {
+	    /* We will stop here */
+	    if (b->disposition == disp_disable)
+	      b->enable_state = bp_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 (real_breakpoint && bs)
+    {
+      if (bs->breakpoint_at->type == bp_hardware_breakpoint)
+	{
+	  if (DECR_PC_AFTER_HW_BREAK != 0)
+	    {
+	      *pc = *pc - DECR_PC_AFTER_HW_BREAK;
+	      write_pc (*pc);
+	    }
+	}
+      else
+	{
+	  if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
+	    {
+	      *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 (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. 
+
+     Another possibly interesting property of this table is that
+     there's a partial ordering, priority-like, of the actions.  Once
+     you've decided that some action is appropriate, you'll never go
+     back and decide something of a lower priority is better.  The
+     ordering is:
+
+     kc   < clr sgl shl shlr slr sn sr ss ts
+     sgl  < clrs shl shlr slr sn sr ss ts
+     slr  < err shl shlr sn sr ss ts
+     clr  < clrs err shl shlr sn sr ss ts
+     clrs < err shl shlr sn sr ss ts
+     ss   < shl shlr sn sr ts
+     sn   < shl shlr sr ts
+     sr   < shl shlr ts
+     shl  < shlr
+     ts   < 
+     shlr <
+
+     What I think this means is that we don't need a damned table
+     here.  If you just put the rows and columns in the right order,
+     it'd look awfully regular.  We could simply walk the bpstat list
+     and choose the highest priority action we find, with a little
+     logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
+     CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
+     is messy anyway).  */
+
+  /* step_resume entries: a step resume breakpoint overrides another
+     breakpoint of signal handling (see comment in wait_for_inferior
+     at first PC_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, slr, 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_thread_event:
+	case bp_overlay_event:
+	  bs_class = bp_nostop;
+	  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 (void)
+{
+  struct breakpoint *b;
+  ALL_BREAKPOINTS (b)
+    if (b->enable_state == bp_enabled && b->type == bp_watchpoint)
+      return 1;
+  return 0;
+}
+
+/* Nonzero if there are enabled hardware watchpoints. */
+int
+bpstat_have_active_hw_watchpoints (void)
+{
+  struct breakpoint *b;
+  ALL_BREAKPOINTS (b)
+    if ((b->enable_state == bp_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 (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)
+	xfree (ep->triggered_dll_pathname);
+      if (ep->type == bp_catch_load)
+	dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (
+	                 PIDGET (inferior_ptid));
+      else
+	dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (
+	                 PIDGET (inferior_ptid));
+#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 B to gdb_stdout. */
+static void
+print_one_breakpoint (struct breakpoint *b,
+		      CORE_ADDR *last_addr)
+{
+  register struct command_line *l;
+  register struct symbol *sym;
+  struct ep_type_description
+    {
+      enum bptype type;
+      char *description;
+    };
+  static struct ep_type_description 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_thread_event, "thread events"},
+    {bp_overlay_event, "overlay 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[] = "nynny";
+  char wrap_indent[80];
+  struct ui_stream *stb = ui_out_stream_new (uiout);
+  struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb);
+
+  annotate_record ();
+  ui_out_tuple_begin (uiout, "bkpt");
+
+  /* 1 */
+  annotate_field (0);
+  ui_out_field_int (uiout, "number", b->number);
+
+  /* 2 */
+  annotate_field (1);
+  if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0])))
+      || ((int) b->type != bptypes[(int) b->type].type))
+    internal_error (__FILE__, __LINE__,
+		    "bptypes table does not describe type #%d.",
+		    (int) b->type);
+  ui_out_field_string (uiout, "type", bptypes[(int) b->type].description);
+
+  /* 3 */
+  annotate_field (2);
+  ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]);
+
+  /* 4 */
+  annotate_field (3);
+  ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]);
+  ui_out_spaces (uiout, 2);
+  
+  /* 5 and 6 */
+  strcpy (wrap_indent, "                           ");
+  if (addressprint)
+    {
+      if (TARGET_ADDR_BIT <= 32)
+	strcat (wrap_indent, "           ");
+      else
+	strcat (wrap_indent, "                   ");
+    }
+  switch (b->type)
+    {
+    case bp_none:
+      internal_error (__FILE__, __LINE__,
+		      "print_one_breakpoint: bp_none encountered\n");
+      break;
+
+    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).  */
+      if (addressprint)
+	ui_out_field_skip (uiout, "addr");
+      annotate_field (5);
+      print_expression (b->exp, stb->stream);
+      ui_out_field_stream (uiout, "what", stb);
+      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).  */
+      if (addressprint)
+	ui_out_field_skip (uiout, "addr");
+      annotate_field (5);
+      if (b->dll_pathname == NULL)
+	{
+	  ui_out_field_string (uiout, "what", "<any library>");
+	  ui_out_spaces (uiout, 1);
+	}
+      else
+	{
+	  ui_out_text (uiout, "library \"");
+	  ui_out_field_string (uiout, "what", b->dll_pathname);
+	  ui_out_text (uiout, "\" ");
+	}
+      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).  */
+      if (addressprint)
+	ui_out_field_skip (uiout, "addr");
+      annotate_field (5);
+      if (b->forked_inferior_pid != 0)
+	{
+	  ui_out_text (uiout, "process ");
+	  ui_out_field_int (uiout, "what", b->forked_inferior_pid);
+	  ui_out_spaces (uiout, 1);
+	}
+      
+    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).  */
+      if (addressprint)
+	ui_out_field_skip (uiout, "addr");
+      annotate_field (5);
+      if (b->exec_pathname != NULL)
+	{
+	  ui_out_text (uiout, "program \"");
+	  ui_out_field_string (uiout, "what", b->exec_pathname);
+	  ui_out_text (uiout, "\" ");
+	}
+      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).  */
+      if (addressprint)
+	ui_out_field_skip (uiout, "addr");
+      annotate_field (5);
+      ui_out_field_string (uiout, "what", "exception catch");
+      ui_out_spaces (uiout, 1);
+      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).  */
+      if (addressprint)
+	ui_out_field_skip (uiout, "addr");
+      annotate_field (5);
+      ui_out_field_string (uiout, "what", "exception throw");
+      ui_out_spaces (uiout, 1);
+      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:
+    case bp_thread_event:
+    case bp_overlay_event:
+      if (addressprint)
+	{
+	  annotate_field (4);
+	  ui_out_field_core_addr (uiout, "addr", b->address);
+	}
+      annotate_field (5);
+      *last_addr = b->address;
+      if (b->source_file)
+	{
+	  sym = find_pc_sect_function (b->address, b->section);
+	  if (sym)
+	    {
+	      ui_out_text (uiout, "in ");
+	      ui_out_field_string (uiout, "func",
+				   SYMBOL_SOURCE_NAME (sym));
+	      ui_out_wrap_hint (uiout, wrap_indent);
+	      ui_out_text (uiout, " at ");
+	    }
+	  ui_out_field_string (uiout, "file", b->source_file);
+	  ui_out_text (uiout, ":");
+	  ui_out_field_int (uiout, "line", b->line_number);
+	}
+      else
+	{
+	  print_address_symbolic (b->address, stb->stream, demangle, "");
+	  ui_out_field_stream (uiout, "at", stb);
+	}
+      break;
+    }
+  
+  if (b->thread != -1)
+    {
+      /* FIXME: This seems to be redundant and lost here; see the
+	 "stop only in" line a little further down. */
+      ui_out_text (uiout, " thread ");
+      ui_out_field_int (uiout, "thread", b->thread);
+    }
+  
+  ui_out_text (uiout, "\n");
+  
+  if (b->frame)
+    {
+      annotate_field (6);
+      ui_out_text (uiout, "\tstop only in stack frame at ");
+      ui_out_field_core_addr (uiout, "frame", b->frame);
+      ui_out_text (uiout, "\n");
+    }
+  
+  if (b->cond)
+    {
+      annotate_field (7);
+      ui_out_text (uiout, "\tstop only if ");
+      print_expression (b->cond, stb->stream);
+      ui_out_field_stream (uiout, "cond", stb);
+      ui_out_text (uiout, "\n");
+    }
+  
+  if (b->thread != -1)
+    {
+      /* FIXME should make an annotation for this */
+      ui_out_text (uiout, "\tstop only in thread ");
+      ui_out_field_int (uiout, "thread", b->thread);
+      ui_out_text (uiout, "\n");
+    }
+  
+  if (show_breakpoint_hit_counts && b->hit_count)
+    {
+      /* FIXME should make an annotation for this */
+      if (ep_is_catchpoint (b))
+	ui_out_text (uiout, "\tcatchpoint");
+      else
+	ui_out_text (uiout, "\tbreakpoint");
+      ui_out_text (uiout, " already hit ");
+      ui_out_field_int (uiout, "times", b->hit_count);
+      if (b->hit_count == 1)
+	ui_out_text (uiout, " time\n");
+      else
+	ui_out_text (uiout, " times\n");
+    }
+  
+  /* Output the count also if it is zero, but only if this is
+     mi. FIXME: Should have a better test for this. */
+  if (ui_out_is_mi_like_p (uiout))
+    if (show_breakpoint_hit_counts && b->hit_count == 0)
+      ui_out_field_int (uiout, "times", b->hit_count);
+
+  if (b->ignore_count)
+    {
+      annotate_field (8);
+      ui_out_text (uiout, "\tignore next ");
+      ui_out_field_int (uiout, "ignore", b->ignore_count);
+      ui_out_text (uiout, " hits\n");
+    }
+  
+  if ((l = b->commands))
+    {
+      annotate_field (9);
+      ui_out_tuple_begin (uiout, "script");
+      print_command_lines (uiout, l, 4);
+      ui_out_tuple_end (uiout);
+    }
+  ui_out_tuple_end (uiout);
+  do_cleanups (old_chain);
+}
+
+struct captured_breakpoint_query_args
+  {
+    int bnum;
+  };
+
+static int
+do_captured_breakpoint_query (struct ui_out *uiout, void *data)
+{
+  struct captured_breakpoint_query_args *args = data;
+  register struct breakpoint *b;
+  CORE_ADDR dummy_addr = 0;
+  ALL_BREAKPOINTS (b)
+    {
+      if (args->bnum == b->number)
+	{
+	  print_one_breakpoint (b, &dummy_addr);
+	  return GDB_RC_OK;
+	}
+    }
+  return GDB_RC_NONE;
+}
+
+enum gdb_rc
+gdb_breakpoint_query (struct ui_out *uiout, int bnum)
+{
+  struct captured_breakpoint_query_args args;
+  args.bnum = bnum;
+  /* For the moment we don't trust print_one_breakpoint() to not throw
+     an error. */
+  return catch_exceptions (uiout, do_captured_breakpoint_query, &args,
+			   NULL, RETURN_MASK_ALL);
+}
+
+/* Return non-zero if B is user settable (breakpoints, watchpoints,
+   catchpoints, et.al.). */
+
+static int
+user_settable_breakpoint (const struct breakpoint *b)
+{
+  return (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);
+}
+	
+/* Print information on user settable breakpoint (watchpoint, etc)
+   number BNUM.  If BNUM is -1 print all user settable breakpoints.
+   If ALLFLAG is non-zero, include non- user settable breakpoints. */
+
+static void
+breakpoint_1 (int bnum, int allflag)
+{
+  register struct breakpoint *b;
+  CORE_ADDR last_addr = (CORE_ADDR) -1;
+  int nr_printable_breakpoints;
+  
+  /* Compute the number of rows in the table. */
+  nr_printable_breakpoints = 0;
+  ALL_BREAKPOINTS (b)
+    if (bnum == -1
+	|| bnum == b->number)
+      {
+	if (allflag || user_settable_breakpoint (b))
+	  nr_printable_breakpoints++;
+      }
+
+  if (addressprint)
+    ui_out_table_begin (uiout, 6, nr_printable_breakpoints, "BreakpointTable");
+  else
+    ui_out_table_begin (uiout, 5, nr_printable_breakpoints, "BreakpointTable");
+
+  if (nr_printable_breakpoints > 0)
+    annotate_breakpoints_headers ();
+  if (nr_printable_breakpoints > 0)
+    annotate_field (0);
+  ui_out_table_header (uiout, 3, ui_left, "number", "Num");		/* 1 */
+  if (nr_printable_breakpoints > 0)
+    annotate_field (1);
+  ui_out_table_header (uiout, 14, ui_left, "type", "Type");		/* 2 */
+  if (nr_printable_breakpoints > 0)
+    annotate_field (2);
+  ui_out_table_header (uiout, 4, ui_left, "disp", "Disp");		/* 3 */
+  if (nr_printable_breakpoints > 0)
+    annotate_field (3);
+  ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb");	/* 4 */
+  if (addressprint)
+	{
+	  if (nr_printable_breakpoints > 0)
+	    annotate_field (4);
+	  if (TARGET_ADDR_BIT <= 32)
+	    ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */
+	  else
+	    ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */
+	}
+  if (nr_printable_breakpoints > 0)
+    annotate_field (5);
+  ui_out_table_header (uiout, 40, ui_noalign, "what", "What");	/* 6 */
+  ui_out_table_body (uiout);
+  if (nr_printable_breakpoints > 0)
+    annotate_breakpoints_table ();
+
+  ALL_BREAKPOINTS (b)
+    if (bnum == -1
+	|| bnum == b->number)
+      {
+	/* We only print out user settable breakpoints unless the
+	   allflag is set. */
+	if (allflag || user_settable_breakpoint (b))
+	  print_one_breakpoint (b, &last_addr);
+      }
+  
+  ui_out_table_end (uiout);
+
+  if (nr_printable_breakpoints == 0)
+    {
+      if (bnum == -1)
+	ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n");
+      else
+	ui_out_message (uiout, 0, "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);
+    }
+
+  /* FIXME? Should this be moved up so that it is only called when
+     there have been breakpoints? */
+  annotate_breakpoints_table_end ();
+}
+
+/* ARGSUSED */
+static void
+breakpoints_info (char *bnum_exp, int from_tty)
+{
+  int bnum = -1;
+
+  if (bnum_exp)
+    bnum = parse_and_eval_long (bnum_exp);
+
+  breakpoint_1 (bnum, 0);
+}
+
+/* ARGSUSED */
+static void
+maintenance_info_breakpoints (char *bnum_exp, int from_tty)
+{
+  int bnum = -1;
+
+  if (bnum_exp)
+    bnum = parse_and_eval_long (bnum_exp);
+
+  breakpoint_1 (bnum, 1);
+}
+
+/* Print a message describing any breakpoints set at PC.  */
+
+static void
+describe_other_breakpoints (CORE_ADDR pc, asection *section)
+{
+  register int others = 0;
+  register struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    if (b->address == pc)	/* address match / overlay match */
+      if (!overlay_debugging || b->section == section)
+	others++;
+  if (others > 0)
+    {
+      printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
+      ALL_BREAKPOINTS (b)
+	if (b->address == pc)	/* address match / overlay match */
+	  if (!overlay_debugging || b->section == section)
+	    {
+	      others--;
+	      printf_filtered ("%d%s%s ",
+			       b->number,
+			       ((b->enable_state == bp_disabled || 
+				 b->enable_state == bp_shlib_disabled || 
+				 b->enable_state == bp_call_disabled) 
+				? " (disabled)" 
+				: b->enable_state == bp_permanent 
+				? " (permanent)"
+				: ""),
+			       (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 (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;
+}
+
+/* Return true iff it is meaningful to use the address member of
+   BPT.  For some breakpoint types, the address member is irrelevant
+   and it makes no sense to attempt to compare it to other addresses
+   (or use it for any other purpose either).
+
+   More specifically, each of the following breakpoint types will always
+   have a zero valued address and we don't want check_duplicates() to mark
+   breakpoints of any of these types to be a duplicate of an actual
+   breakpoint at address zero:
+
+      bp_watchpoint
+      bp_hardware_watchpoint
+      bp_read_watchpoint
+      bp_access_watchpoint
+      bp_catch_exec
+      bp_longjmp_resume
+      bp_catch_fork
+      bp_catch_vork */
+
+static int
+breakpoint_address_is_meaningful (struct breakpoint *bpt)
+{
+  enum bptype type = bpt->type;
+
+  return (type != bp_watchpoint
+	  && type != bp_hardware_watchpoint
+	  && type != bp_read_watchpoint
+	  && type != bp_access_watchpoint
+	  && type != bp_catch_exec
+	  && type != bp_longjmp_resume
+	  && type != bp_catch_fork
+	  && type != bp_catch_vfork);
+}
+
+/* Rescan breakpoints at the same address and section as BPT,
+   marking the first one as "first" and any others as "duplicates".
+   This is so that the bpt instruction is only inserted once.
+   If we have a permanent breakpoint at the same place as BPT, make
+   that one the official one, and the rest as duplicates.  */
+
+static void
+check_duplicates (struct breakpoint *bpt)
+{
+  register struct breakpoint *b;
+  register int count = 0;
+  struct breakpoint *perm_bp = 0;
+  CORE_ADDR address = bpt->address;
+  asection *section = bpt->section;
+
+  if (! breakpoint_address_is_meaningful (bpt))
+    return;
+
+  ALL_BREAKPOINTS (b)
+    if (b->enable_state != bp_disabled
+	&& b->enable_state != bp_shlib_disabled
+	&& b->enable_state != bp_call_disabled
+	&& b->address == address	/* address / overlay match */
+	&& (!overlay_debugging || b->section == section)
+	&& breakpoint_address_is_meaningful (b))
+    {
+      /* Have we found a permanent breakpoint?  */
+      if (b->enable_state == bp_permanent)
+	{
+	  perm_bp = b;
+	  break;
+	}
+	
+      count++;
+      b->duplicate = count > 1;
+    }
+
+  /* If we found a permanent breakpoint at this address, go over the
+     list again and declare all the other breakpoints there to be the
+     duplicates.  */
+  if (perm_bp)
+    {
+      perm_bp->duplicate = 0;
+
+      /* Permanent breakpoint should always be inserted.  */
+      if (! perm_bp->inserted)
+	internal_error (__FILE__, __LINE__,
+			"allegedly permanent breakpoint is not "
+			"actually inserted");
+
+      ALL_BREAKPOINTS (b)
+	if (b != perm_bp)
+	  {
+	    if (b->inserted)
+	      internal_error (__FILE__, __LINE__,
+			      "another breakpoint was inserted on top of "
+			      "a permanent breakpoint");
+
+	    if (b->enable_state != bp_disabled
+		&& b->enable_state != bp_shlib_disabled
+		&& b->enable_state != bp_call_disabled
+		&& b->address == address	/* address / overlay match */
+		&& (!overlay_debugging || b->section == section)
+		&& breakpoint_address_is_meaningful (b))
+	      b->duplicate = 1;
+	  }
+    }
+}
+
+/* set_raw_breakpoint() is a low level routine for allocating and
+   partially initializing a breakpoint of type BPTYPE.  The newly
+   created breakpoint's address, section, source file name, and line
+   number are provided by SAL.  The newly created and partially
+   initialized breakpoint is added to the breakpoint chain and
+   is also returned as the value of this function.
+
+   It is expected that the caller will complete the initialization of
+   the newly created breakpoint struct as well as output any status
+   information regarding the creation of a new breakpoint.  In
+   particular, set_raw_breakpoint() does NOT set the breakpoint
+   number!  Care should be taken to not allow an error() to occur
+   prior to completing the initialization of the breakpoint.  If this
+   should happen, a bogus breakpoint will be left on the chain.  */
+
+struct breakpoint *
+set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype)
+{
+  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->type = bptype;
+  b->language = current_language->la_language;
+  b->input_radix = input_radix;
+  b->thread = -1;
+  b->line_number = sal.line;
+  b->enable_state = bp_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 (b);
+  breakpoints_changed ();
+
+  return b;
+}
+
+
+/* Note that the breakpoint object B describes a permanent breakpoint
+   instruction, hard-wired into the inferior's code.  */
+void
+make_breakpoint_permanent (struct breakpoint *b)
+{
+  b->enable_state = bp_permanent;
+
+  /* By definition, permanent breakpoints are already present in the code.  */
+  b->inserted = 1;
+}
+
+static struct breakpoint *
+create_internal_breakpoint (CORE_ADDR address, enum bptype type)
+{
+  static int internal_breakpoint_number = -1;
+  struct symtab_and_line sal;
+  struct breakpoint *b;
+
+  INIT_SAL (&sal);		/* initialize to zeroes */
+
+  sal.pc = address;
+  sal.section = find_pc_overlay (sal.pc);
+
+  b = set_raw_breakpoint (sal, type);
+  b->number = internal_breakpoint_number--;
+  b->disposition = disp_donttouch;
+
+  return b;
+}
+
+
+static void
+create_longjmp_breakpoint (char *func_name)
+{
+  struct breakpoint *b;
+  struct minimal_symbol *m;
+
+  if (func_name == NULL)
+    b = create_internal_breakpoint (0, bp_longjmp_resume);
+  else
+    {
+      if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL)
+	return;
+ 
+      b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp);
+    }
+
+  b->enable_state = bp_disabled;
+  b->silent = 1;
+  if (func_name)
+    b->addr_string = xstrdup (func_name);
+}
+
+/* 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 (void)
+{
+  register struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    if (b->type == bp_longjmp)
+    {
+      b->enable_state = bp_enabled;
+      check_duplicates (b);
+    }
+}
+
+void
+disable_longjmp_breakpoint (void)
+{
+  register struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    if (b->type == bp_longjmp
+	|| b->type == bp_longjmp_resume)
+    {
+      b->enable_state = bp_disabled;
+      check_duplicates (b);
+    }
+}
+
+static void
+create_overlay_event_breakpoint (char *func_name)
+{
+  struct breakpoint *b;
+  struct minimal_symbol *m;
+
+  if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL)
+    return;
+ 
+  b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), 
+				  bp_overlay_event);
+  b->addr_string = xstrdup (func_name);
+
+  if (overlay_debugging == ovly_auto)
+    {
+      b->enable_state = bp_enabled;
+      overlay_events_enabled = 1;
+    }
+  else 
+    {
+      b->enable_state = bp_disabled;
+      overlay_events_enabled = 0;
+    }
+}
+
+void
+enable_overlay_breakpoints (void)
+{
+  register struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    if (b->type == bp_overlay_event)
+    {
+      b->enable_state = bp_enabled;
+      check_duplicates (b);
+      overlay_events_enabled = 1;
+    }
+}
+
+void
+disable_overlay_breakpoints (void)
+{
+  register struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    if (b->type == bp_overlay_event)
+    {
+      b->enable_state = bp_disabled;
+      check_duplicates (b);
+      overlay_events_enabled = 0;
+    }
+}
+
+struct breakpoint *
+create_thread_event_breakpoint (CORE_ADDR address)
+{
+  struct breakpoint *b;
+  char addr_string[80];		/* Surely an addr can't be longer than that. */
+
+  b = create_internal_breakpoint (address, bp_thread_event);
+  
+  b->enable_state = bp_enabled;
+  /* addr_string has to be used or breakpoint_re_set will delete me.  */
+  sprintf (addr_string, "*0x%s", paddr (b->address));
+  b->addr_string = xstrdup (addr_string);
+
+  return b;
+}
+
+void
+remove_thread_event_breakpoints (void)
+{
+  struct breakpoint *b, *temp;
+
+  ALL_BREAKPOINTS_SAFE (b, temp)
+    if (b->type == bp_thread_event)
+      delete_breakpoint (b);
+}
+
+#ifdef SOLIB_ADD
+void
+remove_solib_event_breakpoints (void)
+{
+  register struct breakpoint *b, *temp;
+
+  ALL_BREAKPOINTS_SAFE (b, temp)
+    if (b->type == bp_shlib_event)
+      delete_breakpoint (b);
+}
+
+struct breakpoint *
+create_solib_event_breakpoint (CORE_ADDR address)
+{
+  struct breakpoint *b;
+
+  b = create_internal_breakpoint (address, bp_shlib_event);
+  return b;
+}
+
+/* Disable any breakpoints that are on code in shared libraries.  Only
+   apply to enabled breakpoints, disabled ones can just stay disabled.  */
+
+void
+disable_breakpoints_in_shlibs (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_state == bp_enabled &&
+	!b->duplicate &&
+	PC_SOLIB (b->address))
+      {
+	b->enable_state = bp_shlib_disabled;
+	if (!silent)
+	  {
+	    if (!disabled_shlib_breaks)
+	      {
+		target_terminal_ours_for_output ();
+		warning ("Temporarily disabling shared library breakpoints:");
+	      }
+	    disabled_shlib_breaks = 1;
+	    warning ("breakpoint #%d ", b->number);
+	  }
+      }
+#endif
+  }
+}
+
+/* Try to reenable any breakpoints in shared libraries.  */
+void
+re_enable_breakpoints_in_shlibs (void)
+{
+  struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    if (b->enable_state == bp_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_state = bp_enabled;
+    }
+}
+
+#endif
+
+static void
+solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname,
+		     char *cond_string, enum bptype bp_kind)
+{
+  struct breakpoint *b;
+  struct symtabs_and_lines sals;
+  struct cleanup *old_chain;
+  struct cleanup *canonical_strings_chain = NULL;
+  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 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 (xfree, sals.sals);
+  if (canonical != (char **) NULL)
+    {
+      make_cleanup (xfree, canonical);
+      canonical_strings_chain = make_cleanup (null_cleanup, 0);
+      if (canonical[0] != NULL)
+	make_cleanup (xfree, 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], bp_kind);
+  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_state = bp_enabled;
+  b->disposition = tempflag ? disp_del : disp_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);
+    }
+
+  mention (b);
+  do_cleanups (old_chain);
+}
+
+void
+create_solib_load_event_breakpoint (char *hookname, int tempflag,
+				    char *dll_pathname, char *cond_string)
+{
+  solib_load_unload_1 (hookname, tempflag, dll_pathname, 
+		       cond_string, bp_catch_load);
+}
+
+void
+create_solib_unload_event_breakpoint (char *hookname, int tempflag,
+				      char *dll_pathname, char *cond_string)
+{
+  solib_load_unload_1 (hookname,tempflag, dll_pathname, 
+		       cond_string, bp_catch_unload);
+}
+
+static void
+create_fork_vfork_event_catchpoint (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, bp_kind);
+  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_state = bp_enabled;
+  b->disposition = tempflag ? disp_del : disp_donttouch;
+  b->forked_inferior_pid = 0;
+
+  mention (b);
+}
+
+void
+create_fork_event_catchpoint (int tempflag, char *cond_string)
+{
+  create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
+}
+
+void
+create_vfork_event_catchpoint (int tempflag, char *cond_string)
+{
+  create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
+}
+
+void
+create_exec_event_catchpoint (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, bp_catch_exec);
+  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_state = bp_enabled;
+  b->disposition = tempflag ? disp_del : disp_donttouch;
+
+  mention (b);
+}
+
+static int
+hw_breakpoint_used_count (void)
+{
+  register struct breakpoint *b;
+  int i = 0;
+
+  ALL_BREAKPOINTS (b)
+  {
+    if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled)
+      i++;
+  }
+
+  return i;
+}
+
+static int
+hw_watchpoint_used_count (enum bptype type, int *other_type_used)
+{
+  register struct breakpoint *b;
+  int i = 0;
+
+  *other_type_used = 0;
+  ALL_BREAKPOINTS (b)
+  {
+    if (b->enable_state == bp_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_state == bp_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 (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_state = bp_enabled;
+      if (frame != NULL)
+	b->frame = frame->frame;
+      else
+	b->frame = 0;
+      check_duplicates (b);
+      return;
+    }
+}
+
+void
+disable_watchpoints_before_interactive_call_start (void)
+{
+  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_state == bp_enabled))
+      {
+	b->enable_state = bp_call_disabled;
+	check_duplicates (b);
+      }
+  }
+}
+
+void
+enable_watchpoints_after_interactive_call_stop (void)
+{
+  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_state == bp_call_disabled))
+      {
+	b->enable_state = bp_enabled;
+	check_duplicates (b);
+      }
+  }
+}
+
+
+/* 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 (struct symtab_and_line sal, struct frame_info *frame,
+			  enum bptype type)
+{
+  register struct breakpoint *b;
+  b = set_raw_breakpoint (sal, type);
+  b->enable_state = bp_enabled;
+  b->disposition = disp_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_ptid))
+    b->thread = pid_to_thread_id (inferior_ptid);
+
+  return b;
+}
+
+
+/* Tell the user we have just set a breakpoint B.  */
+
+static void
+mention (struct breakpoint *b)
+{
+  int say_where = 0;
+  struct cleanup *old_chain;
+  struct ui_stream *stb;
+
+  stb = ui_out_stream_new (uiout);
+  old_chain = make_cleanup_ui_out_stream_delete (stb);
+
+  /* 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);
+  breakpoint_create_event (b->number);
+
+  switch (b->type)
+    {
+    case bp_none:
+      printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number);
+      break;
+    case bp_watchpoint:
+      ui_out_text (uiout, "Watchpoint ");
+      ui_out_tuple_begin (uiout, "wpt");
+      ui_out_field_int (uiout, "number", b->number);
+      ui_out_text (uiout, ": ");
+      print_expression (b->exp, stb->stream);
+      ui_out_field_stream (uiout, "exp", stb);
+      ui_out_tuple_end (uiout);
+      break;
+    case bp_hardware_watchpoint:
+      ui_out_text (uiout, "Hardware watchpoint ");
+      ui_out_tuple_begin (uiout, "wpt");
+      ui_out_field_int (uiout, "number", b->number);
+      ui_out_text (uiout, ": ");
+      print_expression (b->exp, stb->stream);
+      ui_out_field_stream (uiout, "exp", stb);
+      ui_out_tuple_end (uiout);
+      break;
+    case bp_read_watchpoint:
+      ui_out_text (uiout, "Hardware read watchpoint ");
+      ui_out_tuple_begin (uiout, "hw-rwpt");
+      ui_out_field_int (uiout, "number", b->number);
+      ui_out_text (uiout, ": ");
+      print_expression (b->exp, stb->stream);
+      ui_out_field_stream (uiout, "exp", stb);
+      ui_out_tuple_end (uiout);
+      break;
+    case bp_access_watchpoint:
+      ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
+      ui_out_tuple_begin (uiout, "hw-awpt");
+      ui_out_field_int (uiout, "number", b->number);
+      ui_out_text (uiout, ": ");
+      print_expression (b->exp, stb->stream);
+      ui_out_field_stream (uiout, "exp", stb);
+      ui_out_tuple_end (uiout);
+      break;
+    case bp_breakpoint:
+      if (ui_out_is_mi_like_p (uiout))
+	{
+	  say_where = 0;
+	  break;
+	}
+      printf_filtered ("Breakpoint %d", b->number);
+      say_where = 1;
+      break;
+    case bp_hardware_breakpoint:
+      if (ui_out_is_mi_like_p (uiout))
+	{
+	  say_where = 0;
+	  break;
+	}
+      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:
+    case bp_thread_event:
+    case bp_overlay_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);
+    }
+  do_cleanups (old_chain);
+  if (ui_out_is_mi_like_p (uiout))
+    return;
+  printf_filtered ("\n");
+}
+
+
+/* Add SALS.nelts breakpoints to the breakpoint table.  For each
+   SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
+   COND[i] and COND_STRING[i] values.
+
+   NOTE: If the function succeeds, the caller is expected to cleanup
+   the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
+   array contents).  If the function fails (error() is called), the
+   caller is expected to cleanups both the ADDR_STRING, COND_STRING,
+   COND and SALS arrays and each of those arrays contents. */
+
+static void
+create_breakpoints (struct symtabs_and_lines sals, char **addr_string,
+		    struct expression **cond, char **cond_string,
+		    enum bptype type, enum bpdisp disposition,
+		    int thread, int ignore_count, int from_tty)
+{
+  if (type == bp_hardware_breakpoint)
+    {
+      int i = hw_breakpoint_used_count ();
+      int 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.");
+    }
+
+  /* Now set all the breakpoints.  */
+  {
+    int i;
+    for (i = 0; i < sals.nelts; i++)
+      {
+	struct breakpoint *b;
+	struct symtab_and_line sal = sals.sals[i];
+
+	if (from_tty)
+	  describe_other_breakpoints (sal.pc, sal.section);
+	
+	b = set_raw_breakpoint (sal, type);
+	set_breakpoint_count (breakpoint_count + 1);
+	b->number = breakpoint_count;
+	b->cond = cond[i];
+	b->thread = thread;
+	b->addr_string = addr_string[i];
+	b->cond_string = cond_string[i];
+	b->ignore_count = ignore_count;
+	b->enable_state = bp_enabled;
+	b->disposition = disposition;
+	mention (b);
+      }
+  }    
+}
+
+/* Parse ARG which is assumed to be a SAL specification possibly
+   followed by conditionals.  On return, SALS contains an array of SAL
+   addresses found. ADDR_STRING contains a vector of (canonical)
+   address strings. ARG points to the end of the SAL. */
+
+void
+parse_breakpoint_sals (char **address,
+		       struct symtabs_and_lines *sals,
+		       char ***addr_string)
+{
+  char *addr_start = *address;
+  *addr_string = NULL;
+  /* If no arg given, or if first arg is 'if ', use the default
+     breakpoint. */
+  if ((*address) == NULL
+      || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2])))
+    {
+      if (default_breakpoint_valid)
+	{
+	  struct symtab_and_line sal;
+	  INIT_SAL (&sal);		/* initialize to zeroes */
+	  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
+    {
+      /* 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
+	      || (strchr ("+-", (*address)[0]) != NULL)))
+	*sals = decode_line_1 (address, 1, default_breakpoint_symtab,
+			       default_breakpoint_line, addr_string);
+      else
+	*sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string);
+    }
+  /* For any SAL that didn't have a canonical string, fill one in. */
+  if (sals->nelts > 0 && *addr_string == NULL)
+    *addr_string = xcalloc (sals->nelts, sizeof (char **));
+  if (addr_start != (*address))
+    {
+      int i;
+      for (i = 0; i < sals->nelts; i++)
+	{
+	  /* Add the string if not present. */
+	  if ((*addr_string)[i] == NULL)
+	    (*addr_string)[i] = savestring (addr_start, (*address) - addr_start);
+	}
+    }
+}
+
+
+/* Convert each SAL into a real PC.  Verify that the PC can be
+   inserted as a breakpoint.  If it can't throw an error. */
+
+void
+breakpoint_sals_to_pc (struct symtabs_and_lines *sals,
+		       char *address)
+{    
+  int i;
+  for (i = 0; i < sals->nelts; i++)
+    {
+      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))
+	{
+	  if (address == NULL)
+	    error ("Cannot break without a running program.");
+	  else
+	    error ("Cannot break on %s without a running program.", 
+		   address);
+	}
+    }
+}
+
+/* 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 (char *arg, int flag, int from_tty)
+{
+  int tempflag, hardwareflag;
+  struct symtabs_and_lines sals;
+  register struct expression **cond = 0;
+  /* Pointers in arg to the start, and one past the end, of the
+     condition.  */
+  char **cond_string = (char **) NULL;
+  char *addr_start = arg;
+  char **addr_string;
+  struct cleanup *old_chain;
+  struct cleanup *breakpoint_chain = NULL;
+  int i;
+  int thread = -1;
+  int ignore_count = 0;
+
+  hardwareflag = flag & BP_HARDWAREFLAG;
+  tempflag = flag & BP_TEMPFLAG;
+
+  sals.sals = NULL;
+  sals.nelts = 0;
+  addr_string = NULL;
+  parse_breakpoint_sals (&arg, &sals, &addr_string);
+
+  if (!sals.nelts)
+    return;
+
+  /* Create a chain of things that always need to be cleaned up. */
+  old_chain = make_cleanup (null_cleanup, 0);
+
+  /* Make sure that all storage allocated to SALS gets freed.  */
+  make_cleanup (xfree, sals.sals);
+
+  /* Cleanup the addr_string array but not its contents. */
+  make_cleanup (xfree, addr_string);
+
+  /* Allocate space for all the cond expressions. */
+  cond = xcalloc (sals.nelts, sizeof (struct expression *));
+  make_cleanup (xfree, cond);
+
+  /* Allocate space for all the cond strings. */
+  cond_string = xcalloc (sals.nelts, sizeof (char **));
+  make_cleanup (xfree, cond_string);
+
+  /* ----------------------------- SNIP -----------------------------
+     Anything added to the cleanup chain beyond this point is assumed
+     to be part of a breakpoint.  If the breakpoint create succeeds
+     then the memory is not reclaimed. */
+  breakpoint_chain = make_cleanup (null_cleanup, 0);
+
+  /* Mark the contents of the addr_string for cleanup.  These go on
+     the breakpoint_chain and only occure if the breakpoint create
+     fails. */
+  for (i = 0; i < sals.nelts; i++)
+    {
+      if (addr_string[i] != NULL)
+	make_cleanup (xfree, addr_string[i]);
+    }
+
+  /* Resolve all line numbers to PC's and verify that the addresses
+     are ok for the target.  */
+  breakpoint_sals_to_pc (&sals, addr_start);
+
+  /* Verify that condition can be parsed, before setting any
+     breakpoints.  Allocate a separate condition expression for each
+     breakpoint. */
+  thread = -1;			/* No specific thread yet */
+  for (i = 0; i < sals.nelts; i++)
+    {
+      char *tok = arg;
+      while (tok && *tok)
+	{
+	  char *end_tok;
+	  int toklen;
+	  char *cond_start = NULL;
+	  char *cond_end = NULL;
+	  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[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
+	      make_cleanup (xfree, cond[i]);
+	      cond_end = tok;
+	      cond_string[i] = savestring (cond_start, cond_end - cond_start);
+	      make_cleanup (xfree, cond_string[i]);
+	    }
+	  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.");
+	}
+    }
+
+  create_breakpoints (sals, addr_string, cond, cond_string,
+		      hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
+		      tempflag ? disp_del : disp_donttouch,
+		      thread, ignore_count, from_tty);
+
+  if (sals.nelts > 1)
+    {
+      warning ("Multiple breakpoints were set.");
+      warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+    }
+  /* That's it. Discard the cleanups for data inserted into the
+     breakpoint. */
+  discard_cleanups (breakpoint_chain);
+  /* But cleanup everything else. */
+  do_cleanups (old_chain);
+}
+
+/* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
+   linenum or *address) with COND and IGNORE_COUNT. */
+
+struct captured_breakpoint_args
+  {
+    char *address;
+    char *condition;
+    int hardwareflag;
+    int tempflag;
+    int thread;
+    int ignore_count;
+  };
+
+static int
+do_captured_breakpoint (void *data)
+{
+  struct captured_breakpoint_args *args = data;
+  struct symtabs_and_lines sals;
+  register struct expression **cond;
+  struct cleanup *old_chain;
+  struct cleanup *breakpoint_chain = NULL;
+  int i;
+  char **addr_string;
+  char **cond_string;
+
+  char *address_end;
+
+  /* Parse the source and lines spec.  Delay check that the expression
+     didn't contain trailing garbage until after cleanups are in
+     place. */
+  sals.sals = NULL;
+  sals.nelts = 0;
+  address_end = args->address;
+  addr_string = NULL;
+  parse_breakpoint_sals (&address_end, &sals, &addr_string);
+
+  if (!sals.nelts)
+    return GDB_RC_NONE;
+
+  /* Create a chain of things at always need to be cleaned up. */
+  old_chain = make_cleanup (null_cleanup, 0);
+
+  /* Always have a addr_string array, even if it is empty. */
+  make_cleanup (xfree, addr_string);
+
+  /* Make sure that all storage allocated to SALS gets freed.  */
+  make_cleanup (xfree, sals.sals);
+
+  /* Allocate space for all the cond expressions. */
+  cond = xcalloc (sals.nelts, sizeof (struct expression *));
+  make_cleanup (xfree, cond);
+
+  /* Allocate space for all the cond strings. */
+  cond_string = xcalloc (sals.nelts, sizeof (char **));
+  make_cleanup (xfree, cond_string);
+
+  /* ----------------------------- SNIP -----------------------------
+     Anything added to the cleanup chain beyond this point is assumed
+     to be part of a breakpoint.  If the breakpoint create goes
+     through then that memory is not cleaned up. */
+  breakpoint_chain = make_cleanup (null_cleanup, 0);
+
+  /* Mark the contents of the addr_string for cleanup.  These go on
+     the breakpoint_chain and only occure if the breakpoint create
+     fails. */
+  for (i = 0; i < sals.nelts; i++)
+    {
+      if (addr_string[i] != NULL)
+	make_cleanup (xfree, addr_string[i]);
+    }
+
+  /* Wait until now before checking for garbage at the end of the
+     address. That way cleanups can take care of freeing any
+     memory. */
+  if (*address_end != '\0')
+    error ("Garbage %s following breakpoint address", address_end);
+
+  /* Resolve all line numbers to PC's.  */
+  breakpoint_sals_to_pc (&sals, args->address);
+
+  /* Verify that conditions can be parsed, before setting any
+     breakpoints.  */
+  for (i = 0; i < sals.nelts; i++)
+    {
+      if (args->condition != NULL)
+	{
+	  char *tok = args->condition;
+	  cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
+	  if (*tok != '\0')
+	    error ("Garbage %s follows condition", tok);
+	  make_cleanup (xfree, cond[i]);
+	  cond_string[i] = xstrdup (args->condition);
+	}
+    }
+
+  create_breakpoints (sals, addr_string, cond, cond_string,
+		      args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
+		      args->tempflag ? disp_del : disp_donttouch,
+		      args->thread, args->ignore_count, 0/*from-tty*/);
+
+  /* That's it. Discard the cleanups for data inserted into the
+     breakpoint. */
+  discard_cleanups (breakpoint_chain);
+  /* But cleanup everything else. */
+  do_cleanups (old_chain);
+  return GDB_RC_OK;
+}
+
+enum gdb_rc
+gdb_breakpoint (char *address, char *condition,
+		int hardwareflag, int tempflag,
+		int thread, int ignore_count)
+{
+  struct captured_breakpoint_args args;
+  args.address = address;
+  args.condition = condition;
+  args.hardwareflag = hardwareflag;
+  args.tempflag = tempflag;
+  args.thread = thread;
+  args.ignore_count = ignore_count;
+  return catch_errors (do_captured_breakpoint, &args,
+		       NULL, RETURN_MASK_ALL);
+}
+
+
+static void
+break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty)
+{
+  struct frame_info *frame;
+  CORE_ADDR low, high, selected_pc = 0;
+  char *extra_args = NULL;
+  char *level_arg;
+  char *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%s %s", paddr_nz (high), extra_args);
+	  else
+	    sprintf (addr_string, "*0x%s", paddr_nz (high));
+	  break_command_1 (addr_string, flag, from_tty);
+	  xfree (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 (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 = NULL;
+  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%s", paddr_nz (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);
+
+  xfree (beg_addr_string);
+  old_chain = make_cleanup (xfree, 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%s %s", paddr_nz (high), extra_args);
+	  else
+	    sprintf (break_string, "*0x%s", paddr_nz (high));
+	  break_command_1 (break_string, flag, from_tty);
+	  xfree (break_string);
+	}
+      else
+	error ("No function contains the specified address");
+    }
+  if (sals.nelts > 1)
+    {
+      warning ("Multiple breakpoints were set.\n");
+      warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+    }
+  do_cleanups (old_chain);
+}
+
+
+/* Helper function for break_command_1 and disassemble_command.  */
+
+void
+resolve_sal_pc (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 (char *arg, int from_tty)
+{
+  break_command_1 (arg, 0, from_tty);
+}
+
+void
+break_at_finish_command (char *arg, int from_tty)
+{
+  break_at_finish_command_1 (arg, 0, from_tty);
+}
+
+void
+break_at_finish_at_depth_command (char *arg, int from_tty)
+{
+  break_at_finish_at_depth_command_1 (arg, 0, from_tty);
+}
+
+void
+tbreak_command (char *arg, int from_tty)
+{
+  break_command_1 (arg, BP_TEMPFLAG, from_tty);
+}
+
+void
+tbreak_at_finish_command (char *arg, int from_tty)
+{
+  break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
+}
+
+static void
+hbreak_command (char *arg, int from_tty)
+{
+  break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
+}
+
+static void
+thbreak_command (char *arg, int from_tty)
+{
+  break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
+}
+
+static void
+stop_command (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 (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 (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:  hw_write:  watch write, 
+                hw_read:   watch read, 
+		hw_access: watch access (read or write) */
+static void
+watch_command_1 (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 == hw_read)
+    bp_type = bp_read_watchpoint;
+  else if (accessflag == hw_access)
+    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 support this type of hardware watchpoint.");
+
+      if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
+	error ("Target can only support one kind of HW watchpoint at a time.");
+    }
+
+#if defined(HPUXHPPA)
+  /*  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_ptid
+     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 */
+
+  /* Change the type of breakpoint to an ordinary watchpoint if a hardware
+     watchpoint could not be set.  */
+  if (!mem_cnt || target_resources_ok <= 0)
+    bp_type = bp_watchpoint;
+
+  /* Now set up the breakpoint.  */
+  b = set_raw_breakpoint (sal, bp_type);
+  set_breakpoint_count (breakpoint_count + 1);
+  b->number = breakpoint_count;
+  b->disposition = disp_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 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,
+	                                         bp_watchpoint_scope);
+	  set_breakpoint_count (breakpoint_count + 1);
+	  scope_breakpoint->number = breakpoint_count;
+
+	  scope_breakpoint->enable_state = bp_enabled;
+
+	  /* Automatically delete the breakpoint when it hits.  */
+	  scope_breakpoint->disposition = disp_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
+
+#if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
+#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
+     (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN))
+#endif
+
+static int
+can_use_hardware_watchpoint (struct value *v)
+{
+  int found_memory_cnt = 0;
+  struct value *head = v;
+
+  /* Did the user specifically forbid us to use hardware watchpoints? */
+  if (!can_use_hw_watchpoints)
+    return 0;
+
+  /* Make sure that the value of the expression depends only upon
+     memory contents, and values computed from them within GDB.  If we
+     find any register references or function calls, we can't use a
+     hardware watchpoint.
+
+     The idea here is that evaluating an expression generates a series
+     of values, one holding the value of every subexpression.  (The
+     expression a*b+c has five subexpressions: a, b, a*b, c, and
+     a*b+c.)  GDB's values hold almost enough information to establish
+     the criteria given above --- they identify memory lvalues,
+     register lvalues, computed values, etcetera.  So we can evaluate
+     the expression, and then scan the chain of values that leaves
+     behind to decide whether we can detect any possible change to the
+     expression's final value using only hardware watchpoints.
+
+     However, I don't think that the values returned by inferior
+     function calls are special in any way.  So this function may not
+     notice that an expression involving an inferior function call
+     can't be watched with hardware watchpoints.  FIXME.  */
+  for (; v; v = v->next)
+    {
+      if (VALUE_LVAL (v) == lval_memory)
+	{
+	  if (VALUE_LAZY (v))
+	    /* A lazy memory lvalue is one that GDB never needed to fetch;
+	       we either just used its address (e.g., `a' in `a.b') or
+	       we never needed it at all (e.g., `a' in `a,b').  */
+	    ;
+	  else
+	    {
+	      /* Ahh, memory we actually used!  Check if we can cover
+                 it with hardware watchpoints.  */
+	      struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+	      /* We only watch structs and arrays if user asked for it
+		 explicitly, never if they just happen to appear in a
+		 middle of some value chain.  */
+	      if (v == head
+		  || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+		      && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+		{
+		  CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+		  int       len   = TYPE_LENGTH (VALUE_TYPE (v));
+
+		  if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len))
+		    return 0;
+		  else
+		    found_memory_cnt++;
+		}
+	    }
+	}
+      else if (v->lval != not_lval && v->modifiable == 0)
+	return 0;	/* ??? What does this represent? */
+      else if (v->lval == lval_register)
+	return 0;	/* cannot watch a register with a HW watchpoint */
+    }
+
+  /* The expression itself looks suitable for using a hardware
+     watchpoint, but give the target machine a chance to reject it.  */
+  return found_memory_cnt;
+}
+
+void
+watch_command_wrapper (char *arg, int from_tty)
+{
+  watch_command (arg, from_tty);
+}
+
+static void
+watch_command (char *arg, int from_tty)
+{
+  watch_command_1 (arg, hw_write, from_tty);
+}
+
+void
+rwatch_command_wrapper (char *arg, int from_tty)
+{
+  rwatch_command (arg, from_tty);
+}
+
+static void
+rwatch_command (char *arg, int from_tty)
+{
+  watch_command_1 (arg, hw_read, from_tty);
+}
+
+void
+awatch_command_wrapper (char *arg, int from_tty)
+{
+  awatch_command (arg, from_tty);
+}
+
+static void
+awatch_command (char *arg, int from_tty)
+{
+  watch_command_1 (arg, hw_access, from_tty);
+}
+
+
+/* Helper routines for the until_command routine in infcmd.c.  Here
+   because it uses the mechanisms of breakpoints.  */
+
+/* This function is called by fetch_inferior_event via the
+   cmd_continuation pointer, to complete the until command. It takes
+   care of cleaning up the temporary breakpoints set up by the until
+   command. */
+static void
+until_break_command_continuation (struct continuation_arg *arg)
+{
+  struct cleanup *cleanups;
+
+  cleanups = (struct cleanup *) arg->data.pointer;
+  do_exec_cleanups (cleanups);
+}
+
+/* ARGSUSED */
+void
+until_break_command (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;
+  struct continuation_arg *arg1;
+
+
+  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];
+  xfree (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);
+
+  if (!event_loop_p || !target_can_async_p ())
+    old_chain = make_cleanup_delete_breakpoint (breakpoint);
+  else
+    old_chain = make_exec_cleanup_delete_breakpoint (breakpoint);
+
+  /* If we are running asynchronously, and the target supports async
+     execution, we are not waiting for the target to stop, in the call
+     tp proceed, below. This means that we cannot delete the
+     brekpoints until the target has actually stopped. The only place
+     where we get a chance to do that is in fetch_inferior_event, so
+     we must set things up for that. */
+
+  if (event_loop_p && target_can_async_p ())
+    {
+      /* In this case the arg for the continuation is just the point
+         in the exec_cleanups chain from where to start doing
+         cleanups, because all the continuation does is the cleanups in
+         the exec_cleanup_chain. */
+      arg1 =
+	(struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
+      arg1->next         = NULL;
+      arg1->data.pointer = old_chain;
+
+      add_continuation (until_break_command_continuation, arg1);
+    }
+
+  /* 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);
+      if (!event_loop_p || !target_can_async_p ())
+	make_cleanup_delete_breakpoint (breakpoint);
+      else
+	make_exec_cleanup_delete_breakpoint (breakpoint);
+    }
+
+  proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
+  /* Do the cleanups now, anly if we are not running asynchronously,
+     of if we are, but the target is still synchronous. */
+  if (!event_loop_p || !target_can_async_p ())
+    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 (char *name)
+{
+}
+
+static int
+disable_catch_breakpoint (void)
+{
+}
+
+static int
+delete_catch_breakpoint (void)
+{
+}
+
+static int
+enable_catch_breakpoint (void)
+{
+}
+#endif /* 0 */
+
+struct sal_chain
+{
+  struct sal_chain *next;
+  struct symtab_and_line sal;
+};
+
+#if 0
+/* 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 (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++;
+    }
+}
+#endif
+
+/* This shares a lot of code with `print_frame_label_vars' from stack.c.  */
+
+static struct symtabs_and_lines
+get_catch_sals (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, 0);
+  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);
+	      register int i;
+	      register struct symbol *sym;
+
+	      ALL_BLOCK_SYMBOLS (b, i, sym)
+		{
+		  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 (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 (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 (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 (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;
+
+#if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
+static void catch_fork_command_1 (catch_fork_kind fork_kind,
+				  char *arg, int tempflag, int from_tty);
+
+static void
+catch_fork_command_1 (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;
+    }
+}
+#endif
+
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+static void
+catch_exec_command_1 (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);
+}
+#endif
+
+#if defined(SOLIB_ADD)
+static void
+catch_load_command_1 (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 (PIDGET (inferior_ptid), tempflag, 
+				dll_pathname, cond_string);
+}
+
+static void
+catch_unload_command_1 (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 (PIDGET (inferior_ptid), 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 (int tempflag, char *cond_string,
+			     enum exception_event_kind ex_event,
+			     struct symtab_and_line *sal)
+{
+  struct breakpoint *b;
+  int thread = -1;		/* All threads. */
+  enum bptype bptype;
+
+  if (!sal)			/* no exception support? */
+    return;
+
+  switch (ex_event)
+    {
+    case EX_EVENT_THROW:
+      bptype = bp_catch_throw;
+      break;
+    case EX_EVENT_CATCH:
+      bptype = bp_catch_catch;
+      break;
+    default:			/* error condition */
+      error ("Internal error -- invalid catchpoint kind");
+    }
+
+  b = set_raw_breakpoint (*sal, bptype);
+  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_state = bp_enabled;
+  b->disposition = tempflag ? disp_del : disp_donttouch;
+  mention (b);
+}
+
+/* Deal with "catch catch" and "catch throw" commands */
+
+static void
+catch_exception_command_1 (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 () */
+
+	  warning ("Unsupported with this platform/compiler combination.");
+	  warning ("Perhaps you can achieve the effect you want by setting");
+	  warning ("a breakpoint on __raise_exception().");
+	}
+    }
+}
+
+/* Cover routine to allow wrapping target_enable_exception_catchpoints
+   inside a catch_errors */
+
+static int
+cover_target_enable_exception_callback (PTR arg)
+{
+  args_for_catchpoint_enable *args = arg;
+  struct symtab_and_line *sal;
+  sal = target_enable_exception_callback (args->kind, args->enable_p);
+  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 (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);
+
+      /* 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 = set_raw_breakpoint (sal, bp_breakpoint);
+      set_breakpoint_count (breakpoint_count + 1);
+      b->number = breakpoint_count;
+
+      b->cond = cond;
+      b->enable_state = bp_enabled;
+      b->disposition = tempflag ? disp_del : disp_donttouch;
+
+      mention (b);
+    }
+
+  if (sals.nelts > 1)
+    {
+      warning ("Multiple breakpoints were set.");
+      warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+    }
+  xfree (sals.sals);
+}
+
+static void
+catch_command_1 (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 (struct symtab_and_line sal)
+{
+  struct breakpoint *b;
+  b = set_raw_breakpoint (sal, bp_breakpoint);
+  set_breakpoint_count (breakpoint_count + 1);
+  b->number = breakpoint_count;
+  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 (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 (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 (char *args)
+{
+  /* Map the delete command to catch clauses described in ARGS.  */
+}
+#endif /* 0 */
+
+static void
+catch_command (char *arg, int from_tty)
+{
+  catch_command_1 (arg, 0, from_tty);
+}
+
+
+static void
+tcatch_command (char *arg, int from_tty)
+{
+  catch_command_1 (arg, 1, from_tty);
+}
+
+/* Delete breakpoints by address or line.  */
+
+static void
+clear_command (char *arg, int from_tty)
+{
+  struct breakpoint *b, *tmp, *prev, *found;
+  int default_match;
+  struct symtabs_and_lines sals;
+  struct symtab_and_line sal;
+  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));
+      make_cleanup (xfree, sals.sals);
+      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.  Do it in two passes, solely to preserve the current
+     behavior that from_tty is forced true if we delete more than
+     one breakpoint.  */
+
+  found = NULL;
+  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];
+      prev = NULL;
+
+      /* Find all matching breakpoints, remove them from the
+	 breakpoint chain, and add them to the 'found' chain.  */
+      ALL_BREAKPOINTS_SAFE (b, tmp)
+	{
+	  /* Are we going to delete b? */
+	  if (b->type != bp_none
+	      && b->type != bp_watchpoint
+	      && b->type != bp_hardware_watchpoint
+	      && b->type != bp_read_watchpoint
+	      && b->type != bp_access_watchpoint
+	      /* Not if b is a watchpoint of any sort... */
+	      && (((sal.pc && (b->address == sal.pc)) 
+		   && (!section_is_overlay (b->section)
+		       || b->section == sal.section))
+		  /* Yes, if sal.pc matches b (modulo overlays).  */
+		  || ((default_match || (0 == sal.pc))
+		      && b->source_file != NULL
+		      && sal.symtab != NULL
+		      && STREQ (b->source_file, sal.symtab->filename)
+		      && b->line_number == sal.line)))
+	    /* Yes, if sal source file and line matches b.  */
+	    {
+	      /* Remove it from breakpoint_chain...  */
+	      if (b == breakpoint_chain)
+		{
+		  /* b is at the head of the list */
+		  breakpoint_chain = b->next;
+		}
+	      else
+		{
+		  prev->next = b->next;
+		}
+	      /* And add it to 'found' chain.  */
+	      b->next = found;
+	      found = b;
+	    }
+	  else
+	    {
+	      /* Keep b, and keep a pointer to it.  */
+	      prev = b;
+	    }
+	}
+    }
+  /* Now go thru the 'found' chain and delete them.  */
+  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);
+      tmp = found->next;
+      delete_breakpoint (found);
+      found = tmp;
+    }
+  if (from_tty)
+    putchar_unfiltered ('\n');
+}
+
+/* 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 (bpstat bs)
+{
+  struct breakpoint *b, *temp;
+
+  for (; bs; bs = bs->next)
+    if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del
+	&& bs->stop)
+      delete_breakpoint (bs->breakpoint_at);
+
+  ALL_BREAKPOINTS_SAFE (b, temp)
+  {
+    if (b->disposition == disp_del_at_next_stop)
+      delete_breakpoint (b);
+  }
+}
+
+/* Delete a breakpoint and clean up all traces of it in the data
+   structures. */
+
+void
+delete_breakpoint (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);
+  breakpoint_delete_event (bpt->number);
+
+  if (bpt->inserted)
+    remove_breakpoint (bpt, mark_inserted);
+
+  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;
+
+      /* Format possible error msg */
+      sprintf (message, message1, bpt->number);
+      args.kind = bpt->type == bp_catch_catch ? 
+	EX_EVENT_CATCH : EX_EVENT_THROW;
+      args.enable_p = 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;
+    }
+
+  check_duplicates (bpt);
+  /* 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_state != bp_disabled
+	    && b->enable_state != bp_shlib_disabled
+	    && b->enable_state != bp_call_disabled)
+	{
+	  int val;
+
+	  /* We should never reach this point if there is a permanent
+	     breakpoint at the same address as the one being deleted.
+	     If there is a permanent breakpoint somewhere, it should
+	     always be the only one inserted.  */
+	  if (b->enable_state == bp_permanent)
+	    internal_error (__FILE__, __LINE__,
+			    "another breakpoint was inserted on top of "
+			    "a permanent breakpoint");
+
+	  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)
+	    {
+	      target_terminal_ours_for_output ();
+	      warning ("Cannot insert breakpoint %d:", b->number);
+	      memory_error (val, b->address);	/* which bombs us out */
+	    }
+	  else
+	    b->inserted = 1;
+	}
+    }
+
+  free_command_lines (&bpt->commands);
+  if (bpt->cond)
+    xfree (bpt->cond);
+  if (bpt->cond_string != NULL)
+    xfree (bpt->cond_string);
+  if (bpt->addr_string != NULL)
+    xfree (bpt->addr_string);
+  if (bpt->exp != NULL)
+    xfree (bpt->exp);
+  if (bpt->exp_string != NULL)
+    xfree (bpt->exp_string);
+  if (bpt->val != NULL)
+    value_free (bpt->val);
+  if (bpt->source_file != NULL)
+    xfree (bpt->source_file);
+  if (bpt->dll_pathname != NULL)
+    xfree (bpt->dll_pathname);
+  if (bpt->triggered_dll_pathname != NULL)
+    xfree (bpt->triggered_dll_pathname);
+  if (bpt->exec_pathname != NULL)
+    xfree (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;
+
+  xfree (bpt);
+}
+
+static void
+do_delete_breakpoint_cleanup (void *b)
+{
+  delete_breakpoint (b);
+}
+
+struct cleanup *
+make_cleanup_delete_breakpoint (struct breakpoint *b)
+{
+  return make_cleanup (do_delete_breakpoint_cleanup, b);
+}
+
+struct cleanup *
+make_exec_cleanup_delete_breakpoint (struct breakpoint *b)
+{
+  return make_exec_cleanup (do_delete_breakpoint_cleanup, b);
+}
+
+void
+delete_command (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->type != bp_thread_event &&
+	    b->type != bp_overlay_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->type != bp_thread_event &&
+		b->type != bp_overlay_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 (PTR bint)
+{
+  /* get past catch_errs */
+  struct breakpoint *b = (struct breakpoint *) bint;
+  struct value *mark;
+  int i;
+  struct symtabs_and_lines sals;
+  char *s;
+  enum enable_state save_enable;
+
+  switch (b->type)
+    {
+    case bp_none:
+      warning ("attempted to reset apparently deleted breakpoint #%d?",
+	       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;
+	}
+      /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote:
+
+	 ``And a hack it is, although Apple's Darwin version of GDB
+	 contains an almost identical hack to implement a "future
+	 break" command.  It seems to work in many real world cases,
+	 but it is easy to come up with a test case where the patch
+	 doesn't help at all.''
+
+	 ``It seems that the way GDB implements breakpoints - in -
+	 shared - libraries was designed for a.out shared library
+	 systems (SunOS 4) where shared libraries were loaded at a
+	 fixed address in memory.  Since ELF shared libraries can (and
+	 will) be loaded at any address in memory, things break.
+	 Fixing this is not trivial.  Therefore, I'm not sure whether
+	 we should add this hack to the branch only.  I cannot
+	 guarantee that things will be fixed on the trunk in the near
+	 future.''
+
+         In case we have a problem, disable this breakpoint.  We'll
+         restore its status if we succeed.  Don't disable a
+         shlib_disabled breakpoint though.  There's a fair chance we
+         can't re-set it if the shared library it's in hasn't been
+         loaded yet.  */
+      save_enable = b->enable_state;
+      if (b->enable_state != bp_shlib_disabled)
+        b->enable_state = bp_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)
+		xfree (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)
+		xfree (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 disabled
+	         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_state = save_enable;	/* Restore it, this worked. */
+
+
+	  /* Now that this is re-enabled, check_duplicates
+	     can be used. */
+	  check_duplicates (b);
+
+	}
+      xfree (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 function names.  */
+
+      /* So for now, just use a global context.  */
+      if (b->exp)
+	xfree (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)
+	    xfree (b->cond);
+	  b->cond = parse_exp_1 (&s, (struct block *) 0, 0);
+	}
+      if (b->enable_state == bp_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 and overlay event breakpoints; they will be
+         reset later by breakpoint_re_set.  */
+    case bp_longjmp:
+    case bp_longjmp_resume:
+    case bp_overlay_event:
+      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:
+
+      /* Like bp_shlib_event, this breakpoint type is special.
+	 Once it is set up, we do not want to touch it.  */
+    case bp_thread_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 (void)
+{
+  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)
+  {
+    /* Format possible error msg */
+    sprintf (message, message1, b->number);
+    catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
+  }
+  set_language (save_language);
+  input_radix = save_input_radix;
+
+  if (GET_LONGJMP_TARGET_P ())
+    {
+      create_longjmp_breakpoint ("longjmp");
+      create_longjmp_breakpoint ("_longjmp");
+      create_longjmp_breakpoint ("siglongjmp");
+      create_longjmp_breakpoint ("_siglongjmp");
+      create_longjmp_breakpoint (NULL);
+    }
+  
+  create_overlay_event_breakpoint ("_ovly_debug_event");
+}
+
+/* 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_ptid. */
+void
+breakpoint_re_set_thread (struct breakpoint *b)
+{
+  if (b->thread != -1)
+    {
+      if (in_thread_list (inferior_ptid))
+	b->thread = pid_to_thread_id (inferior_ptid);
+    }
+}
+
+/* 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).  */
+
+void
+set_ignore_count (int bptnum, int count, int 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 (void)
+{
+  struct breakpoint *b;
+
+  ALL_BREAKPOINTS (b)
+    b->ignore_count = 0;
+}
+
+/* Command to set ignore-count of breakpoint N to COUNT.  */
+
+static void
+ignore_command (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 (num == 0)
+    error ("bad breakpoint number: '%s'", args);
+  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 (char *args, void (*function) (struct breakpoint *))
+{
+  register char *p = args;
+  char *p1;
+  register int num;
+  register struct breakpoint *b, *tmp;
+  int match;
+
+  if (p == 0)
+    error_no_arg ("one or more breakpoint numbers");
+
+  while (*p)
+    {
+      match = 0;
+      p1 = p;
+
+      num = get_number_or_range (&p1);
+      if (num == 0)
+	{
+	  warning ("bad breakpoint number at or near '%s'", p);
+	}
+      else
+	{
+	  ALL_BREAKPOINTS_SAFE (b, tmp)
+	    if (b->number == num)
+	      {
+		struct breakpoint *related_breakpoint = b->related_breakpoint;
+		match = 1;
+		function (b);
+		if (related_breakpoint)
+		  function (related_breakpoint);
+		break;
+	      }
+	  if (match == 0)
+	    printf_unfiltered ("No breakpoint number %d.\n", num);
+	}
+      p = p1;
+    }
+}
+
+/* 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).  */
+
+void
+disable_breakpoint (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;
+
+  /* You can't disable permanent breakpoints.  */
+  if (bpt->enable_state == bp_permanent)
+    return;
+
+  bpt->enable_state = bp_disabled;
+
+  check_duplicates (bpt);
+
+  if (modify_breakpoint_hook)
+    modify_breakpoint_hook (bpt);
+  breakpoint_modify_event (bpt->number);
+}
+
+/* ARGSUSED */
+static void
+disable_command (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?",
+		 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 (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.");
+    }
+
+  if (bpt->enable_state != bp_permanent)
+    bpt->enable_state = bp_enabled;
+  bpt->disposition = disposition;
+  check_duplicates (bpt);
+  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_state = bp_disabled;
+	      return;
+	    }
+
+	  save_selected_frame = selected_frame;
+	  save_selected_frame_level = frame_relative_level (selected_frame);
+	  select_frame (fr);
+	}
+
+      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_state = bp_disabled;
+	      value_free_to_mark (mark);
+	      return;
+	    }
+	}
+
+      if (save_selected_frame_level >= 0)
+	select_frame (save_selected_frame);
+      value_free_to_mark (mark);
+    }
+  if (modify_breakpoint_hook)
+    modify_breakpoint_hook (bpt);
+  breakpoint_modify_event (bpt->number);
+}
+
+void
+enable_breakpoint (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 (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?",
+		 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 (struct breakpoint *bpt)
+{
+  do_enable_breakpoint (bpt, disp_disable);
+}
+
+/* ARGSUSED */
+static void
+enable_once_command (char *args, int from_tty)
+{
+  map_breakpoint_numbers (args, enable_once_breakpoint);
+}
+
+static void
+enable_delete_breakpoint (struct breakpoint *bpt)
+{
+  do_enable_breakpoint (bpt, disp_del);
+}
+
+/* ARGSUSED */
+static void
+enable_delete_command (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 (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 (void)
+{
+  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.");
+
+  c = 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.");
+  set_cmd_completer (c, location_completer);
+
+  c = 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.");
+  set_cmd_completer (c, location_completer);
+
+  c = 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.");
+  set_cmd_completer (c, location_completer);
+
+  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));
+
+  c = 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));
+  set_cmd_completer (c, location_completer);
+
+  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);
+
+ if (xdb_commands)
+    {
+      add_com_alias ("ba", "break", class_breakpoint, 1);
+      add_com_alias ("bu", "ubreak", class_breakpoint, 1);
+    }
+
+  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 \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+
+  add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
+	   concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint     - normal breakpoint\n\
+\twatchpoint     - watchpoint\n\
+\tlongjmp        - internal breakpoint used to step through longjmp()\n\
+\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
+\tuntil          - internal breakpoint used by the \"until\" command\n\
+\tfinish         - internal breakpoint used by the \"finish\" command\n",
+		   "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
+breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+		   "Convenience variable \"$_\" 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);
+
+  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.");
+
+  c = 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.");
+  set_cmd_completer (c, location_completer);
+
+  c = 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.");
+  set_cmd_completer (c, location_completer);
+
+  c = 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.");
+  set_cmd_completer (c, location_completer);
+
+  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;
+}