Initial creation of sourceware repository

1 files changed, 0 insertions, 2630 deletions

diff --git a/gdb/target.c b/gdb/target.c
deleted file mode 100644
index 4d9f3e9..0000000
--- a/gdb/target.c
+++ /dev/null
@@ -1,2630 +0,0 @@
-/* Select target systems and architectures at runtime for GDB.
-   Copyright 1990, 1992, 1993, 1994, 1995, 1998 Free Software Foundation, Inc.
-   Contributed by Cygnus Support.
-
-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 <errno.h>
-#include <ctype.h>
-#include "gdb_string.h"
-#include "target.h"
-#include "gdbcmd.h"
-#include "symtab.h"
-#include "inferior.h"
-#include "bfd.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "wait.h"
-#include <signal.h>
-
-extern int errno;
-
-static void
-target_info PARAMS ((char *, int));
-
-static void
-cleanup_target PARAMS ((struct target_ops *));
-
-static void
-maybe_kill_then_create_inferior PARAMS ((char *, char *, char **));
-
-static void
-default_clone_and_follow_inferior PARAMS ((int, int *));
-
-static void
-maybe_kill_then_attach PARAMS ((char *, int));
-
-static void
-kill_or_be_killed PARAMS ((int));
-
-static void
-default_terminal_info PARAMS ((char *, int));
-
-static int
-nosymbol PARAMS ((char *, CORE_ADDR *));
-
-static void
-tcomplain PARAMS ((void));
-
-static int
-nomemory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
-
-static int
-return_zero PARAMS ((void));
-
-static int
-return_one PARAMS ((void));
-
-void
-target_ignore PARAMS ((void));
-
-static void
-target_command PARAMS ((char *, int));
-
-static struct target_ops *
-find_default_run_target PARAMS ((char *));
-
-static void
-update_current_target PARAMS ((void));
-
-/* Transfer LEN bytes between target address MEMADDR and GDB address MYADDR.
-   Returns 0 for success, errno code for failure (which includes partial
-   transfers--if you want a more useful response to partial transfers, try
-   target_read_memory_partial).  */
-
-static int
-target_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
-			    int write, asection *bfd_section));
-
-static void
-debug_to_open PARAMS ((char *, int));
-
-static void
-debug_to_close PARAMS ((int));
-
-static void
-debug_to_attach PARAMS ((char *, int));
-
-static void
-debug_to_detach PARAMS ((char *, int));
-
-static void
-debug_to_resume PARAMS ((int, int, enum target_signal));
-
-static int
-debug_to_wait PARAMS ((int, struct target_waitstatus *));
-
-static void
-debug_to_fetch_registers PARAMS ((int));
-
-static void
-debug_to_store_registers PARAMS ((int));
-
-static void
-debug_to_prepare_to_store PARAMS ((void));
-
-static int
-debug_to_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
-
-static void
-debug_to_files_info PARAMS ((struct target_ops *));
-
-static int
-debug_to_insert_breakpoint PARAMS ((CORE_ADDR, char *));
-
-static int
-debug_to_remove_breakpoint PARAMS ((CORE_ADDR, char *));
-
-static void
-debug_to_terminal_init PARAMS ((void));
-
-static void
-debug_to_terminal_inferior PARAMS ((void));
-
-static void
-debug_to_terminal_ours_for_output PARAMS ((void));
-
-static void
-debug_to_terminal_ours PARAMS ((void));
-
-static void
-debug_to_terminal_info PARAMS ((char *, int));
-
-static void
-debug_to_kill PARAMS ((void));
-
-static void
-debug_to_load PARAMS ((char *, int));
-
-static int
-debug_to_lookup_symbol PARAMS ((char *, CORE_ADDR *));
-
-static void
-debug_to_create_inferior PARAMS ((char *, char *, char **));
-
-static void
-debug_to_mourn_inferior PARAMS ((void));
-
-static int
-debug_to_can_run PARAMS ((void));
-
-static void
-debug_to_notice_signals PARAMS ((int));
-
-static int
-debug_to_thread_alive PARAMS ((int));
-
-static void
-debug_to_stop PARAMS ((void));
-
-static int
-debug_to_query PARAMS ((char, char *, char *, int *));
-
-/* Pointer to array of target architecture structures; the size of the
-   array; the current index into the array; the allocated size of the 
-   array.  */
-struct target_ops **target_structs;
-unsigned target_struct_size;
-unsigned target_struct_index;
-unsigned target_struct_allocsize;
-#define	DEFAULT_ALLOCSIZE	10
-
-/* The initial current target, so that there is always a semi-valid
-   current target.  */
-
-struct target_ops dummy_target = {
-  "None",			/* to_shortname */
-  "None",			/* to_longname */
-  "",				/* to_doc */
-  0,				/* to_open */
-  0,				/* to_close */
-  find_default_attach,		/* to_attach */
-  NULL,                         /* to_post_attach */
-  find_default_require_attach,	/* to_require_attach */
-  0,				/* to_detach */
-  find_default_require_detach,	/* to_require_detach */
-  0,				/* to_resume */
-  0,				/* to_wait */
-  NULL,                         /* to_post_wait */
-  0,				/* to_fetch_registers */
-  0,				/* to_store_registers */
-  0,				/* to_prepare_to_store */
-  0,				/* to_xfer_memory */
-  0,				/* to_files_info */
-  0,				/* to_insert_breakpoint */
-  0,				/* to_remove_breakpoint */
-  0,				/* to_terminal_init */
-  0,				/* to_terminal_inferior */
-  0,				/* to_terminal_ours_for_output */
-  0,				/* to_terminal_ours */
-  0,				/* to_terminal_info */
-  0,				/* to_kill */
-  0,				/* to_load */
-  0,				/* to_lookup_symbol */
-  find_default_create_inferior,	/* to_create_inferior */
-  NULL,                         /* to_post_startup_inferior */
-  NULL,                         /* to_acknowledge_created_inferior */
-  find_default_clone_and_follow_inferior,	/* to_clone_and_follow_inferior */
-  NULL,                         /* to_post_follow_inferior_by_clone */
-  NULL,                         /* to_insert_fork_catchpoint */
-  NULL,                         /* to_remove_fork_catchpoint */
-  NULL,                         /* to_insert_vfork_catchpoint */
-  NULL,                         /* to_remove_vfork_catchpoint */
-  NULL,                         /* to_has_forked */
-  NULL,                         /* to_has_vforked */
-  NULL,                         /* to_can_follow_vfork_prior_to_exec */
-  NULL,                         /* to_post_follow_vfork */
-  NULL,                         /* to_insert_exec_catchpoint */
-  NULL,                         /* to_remove_exec_catchpoint */
-  NULL,                         /* to_has_execd */
-  NULL,                         /* to_reported_exec_events_per_exec_call */
-  NULL,                         /* to_has_syscall_event */
-  NULL,                         /* to_has_exited */
-  0,				/* to_mourn_inferior */
-  0,				/* to_can_run */
-  0,				/* to_notice_signals */
-  0,				/* to_thread_alive */
-  0,				/* to_stop */
-  0,				/* to_query */
-  NULL,                         /* to_enable_exception_callback */
-  NULL,                         /* to_get_current_exception_event */
-  NULL,                         /* to_pid_to_exec_file */
-  NULL,                         /* to_core_file_to_sym_file */
-  dummy_stratum,		/* to_stratum */
-  0,				/* to_next */
-  0,				/* to_has_all_memory */
-  0,				/* to_has_memory */
-  0,				/* to_has_stack */
-  0,				/* to_has_registers */
-  0,				/* to_has_execution */
-  tc_none,			/* to_has_thread_control */
-  0,				/* to_sections */
-  0,				/* to_sections_end */
-  OPS_MAGIC,			/* to_magic */
-};
-
-/* Top of target stack.  */
-
-struct target_stack_item *target_stack;
-
-/* The target structure we are currently using to talk to a process
-   or file or whatever "inferior" we have.  */
-
-struct target_ops current_target;
-
-/* Command list for target.  */
-
-static struct cmd_list_element *targetlist = NULL;
-
-/* Nonzero if we are debugging an attached outside process
-   rather than an inferior.  */
-
-int attach_flag;
-
-#ifdef MAINTENANCE_CMDS
-/* Non-zero if we want to see trace of target level stuff.  */
-
-static int targetdebug = 0;
-
-static void setup_target_debug PARAMS ((void));
-
-#endif
-
-/* The user just typed 'target' without the name of a target.  */
-
-/* ARGSUSED */
-static void
-target_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  fputs_filtered ("Argument required (target name).  Try `help target'\n",
-		  gdb_stdout);
-}
-
-/* Add a possible target architecture to the list.  */
-
-void
-add_target (t)
-     struct target_ops *t;
-{
-  if (!target_structs)
-    {
-      target_struct_allocsize = DEFAULT_ALLOCSIZE;
-      target_structs = (struct target_ops **) xmalloc
-	(target_struct_allocsize * sizeof (*target_structs));
-    }
-  if (target_struct_size >= target_struct_allocsize)
-    {
-      target_struct_allocsize *= 2;
-      target_structs = (struct target_ops **)
-	  xrealloc ((char *) target_structs, 
-		    target_struct_allocsize * sizeof (*target_structs));
-    }
-  target_structs[target_struct_size++] = t;
-/*  cleanup_target (t);*/
-
-  if (targetlist == NULL)
-    add_prefix_cmd ("target", class_run, target_command,
-		    "Connect to a target machine or process.\n\
-The first argument is the type or protocol of the target machine.\n\
-Remaining arguments are interpreted by the target protocol.  For more\n\
-information on the arguments for a particular protocol, type\n\
-`help target ' followed by the protocol name.",
-		    &targetlist, "target ", 0, &cmdlist);
-  add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
-}
-
-/* Stub functions */
-
-void
-target_ignore ()
-{
-}
-
-/* ARGSUSED */
-static int
-nomemory (memaddr, myaddr, len, write, t)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int write;
-     struct target_ops *t;
-{
-  errno = EIO;		/* Can't read/write this location */
-  return 0;		/* No bytes handled */
-}
-
-static void
-tcomplain ()
-{
-  error ("You can't do that when your target is `%s'",
-	 current_target.to_shortname);
-}
-
-void
-noprocess ()
-{
-  error ("You can't do that without a process to debug.");
-}
-
-/* ARGSUSED */
-static int
-nosymbol (name, addrp)
-     char *name;
-     CORE_ADDR *addrp;
-{
-  return 1;		/* Symbol does not exist in target env */
-}
-
-/* ARGSUSED */
-void
-nosupport_runtime ()
-{
-  if (!inferior_pid)
-    noprocess ();
-  else
-    error ("No run-time support for this");
-}
-
-
-/* ARGSUSED */
-static void
-default_terminal_info (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  printf_unfiltered("No saved terminal information.\n");
-}
-
-/* This is the default target_create_inferior and target_attach function.
-   If the current target is executing, it asks whether to kill it off.
-   If this function returns without calling error(), it has killed off
-   the target, and the operation should be attempted.  */
-
-static void
-kill_or_be_killed (from_tty)
-     int from_tty;
-{
-  if (target_has_execution)
-    {
-      printf_unfiltered ("You are already running a program:\n");
-      target_files_info ();
-      if (query ("Kill it? ")) {
-	target_kill ();
-	if (target_has_execution)
-	  error ("Killing the program did not help.");
-	return;
-      } else {
-	error ("Program not killed.");
-      }
-    }
-  tcomplain();
-}
-
-static void
-maybe_kill_then_attach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  kill_or_be_killed (from_tty);
-  target_attach (args, from_tty);
-}
-
-static void
-maybe_kill_then_create_inferior (exec, args, env)
-     char *exec;
-     char *args;
-     char **env;
-{
-  kill_or_be_killed (0);
-  target_create_inferior (exec, args, env);
-}
-
-static void
-default_clone_and_follow_inferior (child_pid, followed_child)
-  int  child_pid;
-  int  *followed_child;
-{
-  target_clone_and_follow_inferior (child_pid, followed_child);
-}
-
-/* Clean up a target struct so it no longer has any zero pointers in it.
-   We default entries, at least to stubs that print error messages.  */
-
-static void
-cleanup_target (t)
-     struct target_ops *t;
-{
-
-#define de_fault(field, value) \
-  if (!t->field)	t->field = value
-
-  /*        FIELD			DEFAULT VALUE        */
-
-  de_fault (to_open, 			(void (*) PARAMS((char *, int))) tcomplain);
-  de_fault (to_close, 			(void (*) PARAMS((int))) target_ignore);
-  de_fault (to_attach, 			maybe_kill_then_attach);
-  de_fault (to_post_attach,             (void (*) PARAMS ((int))) target_ignore);
-  de_fault (to_require_attach,          maybe_kill_then_attach);
-  de_fault (to_detach, 			(void (*) PARAMS((char *, int))) target_ignore);
-  de_fault (to_require_detach,          (void (*) PARAMS((int, char *, int))) target_ignore);
-  de_fault (to_resume, 			(void (*) PARAMS((int, int, enum target_signal))) noprocess);
-  de_fault (to_wait, 			(int (*) PARAMS((int, struct target_waitstatus *))) noprocess);
-  de_fault (to_post_wait,               (void (*) PARAMS ((int, int))) target_ignore);
-  de_fault (to_fetch_registers, 	(void (*) PARAMS((int))) target_ignore);
-  de_fault (to_store_registers,		(void (*) PARAMS((int))) noprocess);
-  de_fault (to_prepare_to_store,	(void (*) PARAMS((void))) noprocess);
-  de_fault (to_xfer_memory,		(int (*) PARAMS((CORE_ADDR, char *, int, int, struct target_ops *))) nomemory);
-  de_fault (to_files_info,		(void (*) PARAMS((struct target_ops *))) target_ignore);
-  de_fault (to_insert_breakpoint,	memory_insert_breakpoint);
-  de_fault (to_remove_breakpoint,	memory_remove_breakpoint);
-  de_fault (to_terminal_init,		(void (*) PARAMS((void))) target_ignore);
-  de_fault (to_terminal_inferior,	(void (*) PARAMS ((void))) target_ignore);
-  de_fault (to_terminal_ours_for_output,(void (*) PARAMS ((void))) target_ignore);
-  de_fault (to_terminal_ours,		(void (*) PARAMS ((void))) target_ignore);
-  de_fault (to_terminal_info,		default_terminal_info);
-  de_fault (to_kill,			(void (*) PARAMS((void))) noprocess);
-  de_fault (to_load,			(void (*) PARAMS((char *, int))) tcomplain);
-  de_fault (to_lookup_symbol,		(int (*) PARAMS ((char *, CORE_ADDR *))) nosymbol);
-  de_fault (to_create_inferior,		maybe_kill_then_create_inferior);
-  de_fault (to_post_startup_inferior,   (void (*) PARAMS ((int))) target_ignore);
-  de_fault (to_acknowledge_created_inferior,            (void (*) PARAMS((int))) target_ignore);
-  de_fault (to_clone_and_follow_inferior,               default_clone_and_follow_inferior);
-  de_fault (to_post_follow_inferior_by_clone,           (void (*) PARAMS ((void))) target_ignore);
-  de_fault (to_insert_fork_catchpoint,  (int (*) PARAMS ((int))) tcomplain);
-  de_fault (to_remove_fork_catchpoint,  (int (*) PARAMS ((int))) tcomplain);
-  de_fault (to_insert_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
-  de_fault (to_remove_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
-  de_fault (to_has_forked,              (int (*) PARAMS ((int, int *))) return_zero);
-  de_fault (to_has_vforked,             (int (*) PARAMS ((int, int *))) return_zero);
-  de_fault (to_can_follow_vfork_prior_to_exec, (int (*) PARAMS ((void ))) return_zero);
-  de_fault (to_post_follow_vfork,       (void (*) PARAMS ((int, int, int, int))) target_ignore);
-  de_fault (to_insert_exec_catchpoint,  (int (*) PARAMS ((int))) tcomplain);
-  de_fault (to_remove_exec_catchpoint,  (int (*) PARAMS ((int))) tcomplain);
-  de_fault (to_has_execd,               (int (*) PARAMS ((int, char **))) return_zero);
-  de_fault (to_reported_exec_events_per_exec_call, (int (*) PARAMS ((void))) return_one);
-  de_fault (to_has_syscall_event,       (int (*) PARAMS ((int, enum target_waitkind *, int *))) return_zero);
-  de_fault (to_has_exited,              (int (*) PARAMS ((int, int, int *))) return_zero);
-  de_fault (to_mourn_inferior,		(void (*) PARAMS ((void))) noprocess);
-  de_fault (to_can_run,			return_zero);
-  de_fault (to_notice_signals,		(void (*) PARAMS((int))) target_ignore);
-  de_fault (to_thread_alive,		(int (*) PARAMS((int))) target_ignore);
-  de_fault (to_stop,			(void (*) PARAMS((void))) target_ignore);
-  de_fault (to_query,			(int (*) PARAMS((char, char*, char *, int *))) target_ignore);
-  de_fault (to_enable_exception_callback,	(struct symtab_and_line * (*) PARAMS((enum exception_event_kind, int))) nosupport_runtime);
-  de_fault (to_get_current_exception_event,	(struct exception_event_record * (*) PARAMS((void))) nosupport_runtime);
-
-  de_fault (to_pid_to_exec_file,        (char* (*) PARAMS((int))) return_zero);
-  de_fault (to_core_file_to_sym_file,   (char* (*) PARAMS ((char *))) return_zero);
-#undef de_fault
-}
-
-/* Go through the target stack from top to bottom, copying over zero entries in
-   current_target.  In effect, we are doing class inheritance through the
-   pushed target vectors.  */
-
-static void
-update_current_target ()
-{
-  struct target_stack_item *item;
-  struct target_ops *t;
-
-  /* First, reset current_target */
-  memset (&current_target, 0, sizeof current_target);
-
-  for (item = target_stack; item; item = item->next)
-    {
-      t = item->target_ops;
-
-#define INHERIT(FIELD, TARGET) \
-      if (!current_target.FIELD) \
-	current_target.FIELD = TARGET->FIELD
-
-      INHERIT (to_shortname, t);
-      INHERIT (to_longname, t);
-      INHERIT (to_doc, t);
-      INHERIT (to_open, t);
-      INHERIT (to_close, t);
-      INHERIT (to_attach, t);
-      INHERIT (to_post_attach, t);
-      INHERIT (to_require_attach, t);
-      INHERIT (to_detach, t);
-      INHERIT (to_require_detach, t);
-      INHERIT (to_resume, t);
-      INHERIT (to_wait, t);
-      INHERIT (to_post_wait, t);
-      INHERIT (to_fetch_registers, t);
-      INHERIT (to_store_registers, t);
-      INHERIT (to_prepare_to_store, t);
-      INHERIT (to_xfer_memory, t);
-      INHERIT (to_files_info, t);
-      INHERIT (to_insert_breakpoint, t);
-      INHERIT (to_remove_breakpoint, t);
-      INHERIT (to_terminal_init, t);
-      INHERIT (to_terminal_inferior, t);
-      INHERIT (to_terminal_ours_for_output, t);
-      INHERIT (to_terminal_ours, t);
-      INHERIT (to_terminal_info, t);
-      INHERIT (to_kill, t);
-      INHERIT (to_load, t);
-      INHERIT (to_lookup_symbol, t);
-      INHERIT (to_create_inferior, t);
-      INHERIT (to_post_startup_inferior, t);
-      INHERIT (to_acknowledge_created_inferior, t);
-      INHERIT (to_clone_and_follow_inferior, t);
-      INHERIT (to_post_follow_inferior_by_clone, t);
-      INHERIT (to_insert_fork_catchpoint, t);
-      INHERIT (to_remove_fork_catchpoint, t);
-      INHERIT (to_insert_vfork_catchpoint, t);
-      INHERIT (to_remove_vfork_catchpoint, t);
-      INHERIT (to_has_forked, t);
-      INHERIT (to_has_vforked, t);
-      INHERIT (to_can_follow_vfork_prior_to_exec, t);
-      INHERIT (to_post_follow_vfork, t);
-      INHERIT (to_insert_exec_catchpoint, t);
-      INHERIT (to_remove_exec_catchpoint, t);
-      INHERIT (to_has_execd, t);
-      INHERIT (to_reported_exec_events_per_exec_call, t);
-      INHERIT (to_has_syscall_event, t);
-      INHERIT (to_has_exited, t);
-      INHERIT (to_mourn_inferior, t);
-      INHERIT (to_can_run, t);
-      INHERIT (to_notice_signals, t);
-      INHERIT (to_thread_alive, t);
-      INHERIT (to_stop, t);
-      INHERIT (to_query, t);
-      INHERIT (to_enable_exception_callback, t);
-      INHERIT (to_get_current_exception_event, t);
-      INHERIT (to_pid_to_exec_file, t);
-      INHERIT (to_core_file_to_sym_file, t);
-      INHERIT (to_stratum, t);
-      INHERIT (DONT_USE, t);
-      INHERIT (to_has_all_memory, t);
-      INHERIT (to_has_memory, t);
-      INHERIT (to_has_stack, t);
-      INHERIT (to_has_registers, t);
-      INHERIT (to_has_execution, t);
-      INHERIT (to_has_thread_control, t);
-      INHERIT (to_sections, t);
-      INHERIT (to_sections_end, t);
-      INHERIT (to_magic, t);
-
-#undef INHERIT
-    }
-}
-
-/* Push a new target type into the stack of the existing target accessors,
-   possibly superseding some of the existing accessors.
-
-   Result is zero if the pushed target ended up on top of the stack,
-   nonzero if at least one target is on top of it.
-
-   Rather than allow an empty stack, we always have the dummy target at
-   the bottom stratum, so we can call the function vectors without
-   checking them.  */
-
-int
-push_target (t)
-     struct target_ops *t;
-{
-  struct target_stack_item *cur, *prev, *tmp;
-
-  /* Check magic number.  If wrong, it probably means someone changed
-     the struct definition, but not all the places that initialize one.  */
-  if (t->to_magic != OPS_MAGIC)
-    {
-      fprintf_unfiltered(gdb_stderr,
-			 "Magic number of %s target struct wrong\n", 
-			 t->to_shortname);
-      abort();
-    }
-
-  /* Find the proper stratum to install this target in. */
-
-  for (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next)
-    {
-      if ((int)(t->to_stratum) >= (int)(cur->target_ops->to_stratum))
-	break;
-    }
-
-  /* If there's already targets at this stratum, remove them. */
-
-  if (cur)
-    while (t->to_stratum == cur->target_ops->to_stratum)
-      {
-	/* There's already something on this stratum.  Close it off.  */
-	if (cur->target_ops->to_close)
-	  (cur->target_ops->to_close) (0);
-	if (prev)
-	  prev->next = cur->next; /* Unchain old target_ops */
-	else
-	  target_stack = cur->next; /* Unchain first on list */
-	tmp = cur->next;
-	free (cur);
-	cur = tmp;
-      }
-
-  /* We have removed all targets in our stratum, now add the new one.  */
-
-  tmp = (struct target_stack_item *)
-    xmalloc (sizeof (struct target_stack_item));
-  tmp->next = cur;
-  tmp->target_ops = t;
-
-  if (prev)
-    prev->next = tmp;
-  else
-    target_stack = tmp;
-
-  update_current_target ();
-
-  cleanup_target (&current_target); /* Fill in the gaps */
-
-#ifdef MAINTENANCE_CMDS
-  if (targetdebug)
-    setup_target_debug ();
-#endif
-
-  return prev != 0;
-}
-
-/* Remove a target_ops vector from the stack, wherever it may be. 
-   Return how many times it was removed (0 or 1).  */
-
-int
-unpush_target (t)
-     struct target_ops *t;
-{
-  struct target_stack_item *cur, *prev;
-
-  if (t->to_close)
-    t->to_close (0);		/* Let it clean up */
-
-  /* Look for the specified target.  Note that we assume that a target
-     can only occur once in the target stack. */
-
-  for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next)
-    if (cur->target_ops == t)
-      break;
-
-  if (!cur)
-    return 0;			/* Didn't find target_ops, quit now */
-
-  /* Unchain the target */
-
-  if (!prev)
-    target_stack = cur->next;
-  else
-    prev->next = cur->next;
-
-  free (cur);			/* Release the target_stack_item */
-
-  update_current_target ();
-  cleanup_target (&current_target);
-
-  return 1;
-}
-
-void
-pop_target ()
-{
-  (current_target.to_close)(0);	/* Let it clean up */
-  if (unpush_target (target_stack->target_ops) == 1)
-    return;
-
-  fprintf_unfiltered(gdb_stderr,
-		     "pop_target couldn't find target %s\n", 
-		     current_target.to_shortname);
-  abort();
-}
-
-#undef	MIN
-#define MIN(A, B) (((A) <= (B)) ? (A) : (B))
-
-/* target_read_string -- read a null terminated string, up to LEN bytes,
-   from MEMADDR in target.  Set *ERRNOP to the errno code, or 0 if successful.
-   Set *STRING to a pointer to malloc'd memory containing the data; the caller
-   is responsible for freeing it.  Return the number of bytes successfully
-   read.  */
-
-int
-target_read_string (memaddr, string, len, errnop)
-     CORE_ADDR memaddr;
-     char **string;
-     int len;
-     int *errnop;
-{
-  int tlen, origlen, offset, i;
-  char buf[4];
-  int errcode = 0;
-  char *buffer;
-  int buffer_allocated;
-  char *bufptr;
-  unsigned int nbytes_read = 0;
-
-  /* Small for testing.  */
-  buffer_allocated = 4;
-  buffer = xmalloc (buffer_allocated);
-  bufptr = buffer;
-
-  origlen = len;
-
-  while (len > 0)
-    {
-      tlen = MIN (len, 4 - (memaddr & 3));
-      offset = memaddr & 3;
-
-      errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0, NULL);
-      if (errcode != 0)
-	{
-	  /* The transfer request might have crossed the boundary to an
-	     unallocated region of memory. Retry the transfer, requesting
-	     a single byte.  */
-	  tlen = 1;
-	  offset = 0;
-	  errcode = target_xfer_memory (memaddr, buf, 1, 0, NULL);
-	  if (errcode != 0)
-	    goto done;
-	}
-
-      if (bufptr - buffer + tlen > buffer_allocated)
-	{
-	  unsigned int bytes;
-	  bytes = bufptr - buffer;
-	  buffer_allocated *= 2;
-	  buffer = xrealloc (buffer, buffer_allocated);
-	  bufptr = buffer + bytes;
-	}
-
-      for (i = 0; i < tlen; i++)
-	{
-	  *bufptr++ = buf[i + offset];
-	  if (buf[i + offset] == '\000')
-	    {
-	      nbytes_read += i + 1;
-	      goto done;
-	    }
-	}
-
-      memaddr += tlen;
-      len -= tlen;
-      nbytes_read += tlen;
-    }
- done:
-  if (errnop != NULL)
-    *errnop = errcode;
-  if (string != NULL)
-    *string = buffer;
-  return nbytes_read;
-}
-
-/* Read LEN bytes of target memory at address MEMADDR, placing the results in
-   GDB's memory at MYADDR.  Returns either 0 for success or an errno value
-   if any error occurs.
-
-   If an error occurs, no guarantee is made about the contents of the data at
-   MYADDR.  In particular, the caller should not depend upon partial reads
-   filling the buffer with good data.  There is no way for the caller to know
-   how much good data might have been transfered anyway.  Callers that can
-   deal with partial reads should call target_read_memory_partial. */
-
-int
-target_read_memory (memaddr, myaddr, len)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-{
-  return target_xfer_memory (memaddr, myaddr, len, 0, NULL);
-}
-
-int
-target_read_memory_section (memaddr, myaddr, len, bfd_section)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     asection *bfd_section;
-{
-  return target_xfer_memory (memaddr, myaddr, len, 0, bfd_section);
-}
-
-/* Read LEN bytes of target memory at address MEMADDR, placing the results
-   in GDB's memory at MYADDR.  Returns a count of the bytes actually read,
-   and optionally an errno value in the location pointed to by ERRNOPTR
-   if ERRNOPTR is non-null. */
-
-int
-target_read_memory_partial (memaddr, myaddr, len, errnoptr)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int *errnoptr;
-{
-  int nread;	/* Number of bytes actually read. */
-  int errcode;	/* Error from last read. */
-
-  /* First try a complete read. */
-  errcode = target_xfer_memory (memaddr, myaddr, len, 0, NULL);
-  if (errcode == 0)
-    {
-      /* Got it all. */
-      nread = len;
-    }
-  else
-    {
-      /* Loop, reading one byte at a time until we get as much as we can. */
-      for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
-	{
-	  errcode = target_xfer_memory (memaddr++, myaddr++, 1, 0, NULL);
-	}
-      /* If an error, the last read was unsuccessful, so adjust count. */
-      if (errcode != 0)
-	{
-	  nread--;
-	}
-    }
-  if (errnoptr != NULL)
-    {
-      *errnoptr = errcode;
-    }
-  return (nread);
-}
-
-int
-target_write_memory (memaddr, myaddr, len)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-{
-  return target_xfer_memory (memaddr, myaddr, len, 1, NULL);
-}
- 
-/* This variable is used to pass section information down to targets.  This
-   *should* be done by adding an argument to the target_xfer_memory function
-   of all the targets, but I didn't feel like changing 50+ files.  */
-
-asection *target_memory_bfd_section = NULL;
-
-/* Move memory to or from the targets.  Iterate until all of it has
-   been moved, if necessary.  The top target gets priority; anything
-   it doesn't want, is offered to the next one down, etc.  Note the
-   business with curlen:  if an early target says "no, but I have a
-   boundary overlapping this xfer" then we shorten what we offer to
-   the subsequent targets so the early guy will get a chance at the
-   tail before the subsequent ones do. 
-
-   Result is 0 or errno value.  */
-
-static int
-target_xfer_memory (memaddr, myaddr, len, write, bfd_section)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int write;
-     asection *bfd_section;
-{
-  int curlen;
-  int res;
-  struct target_ops *t;
-  struct target_stack_item *item;
-
-  /* Zero length requests are ok and require no work.  */
-  if (len == 0)
-    return 0;
-
-  target_memory_bfd_section = bfd_section;
-
-  /* to_xfer_memory is not guaranteed to set errno, even when it returns
-     0.  */
-  errno = 0;
-
-  /* The quick case is that the top target does it all.  */
-  res = current_target.to_xfer_memory
-			(memaddr, myaddr, len, write, &current_target);
-  if (res == len)
-    return 0;
-
-  if (res > 0)
-    goto bump;
-  /* If res <= 0 then we call it again in the loop.  Ah well.  */
-
-  for (; len > 0;)
-    {
-      curlen = len;		/* Want to do it all */
-      for (item = target_stack; item; item = item->next)
-	{
-	  t = item->target_ops;
-	  if (!t->to_has_memory)
-	    continue;
-
-	  res = t->to_xfer_memory (memaddr, myaddr, curlen, write, t);
-	  if (res > 0)
-	    break;		/* Handled all or part of xfer */
-	  if (t->to_has_all_memory)
-	    break;
-	}
-
-      if (res <= 0)
-	{
-	  /* If this address is for nonexistent memory,
-	     read zeros if reading, or do nothing if writing.  Return error. */
-	  if (!write)
-	    memset (myaddr, 0, len);
-	  if (errno == 0)
-	    return EIO;
-	  else
-	    return errno;
-	}
-bump:
-      memaddr += res;
-      myaddr  += res;
-      len     -= res;
-    }
-  return 0;			/* We managed to cover it all somehow. */
-}
-
-
-/* ARGSUSED */
-static void
-target_info (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  struct target_ops *t;
-  struct target_stack_item *item;
-  int has_all_mem = 0;
-  
-  if (symfile_objfile != NULL)
-    printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
-
-#ifdef FILES_INFO_HOOK
-  if (FILES_INFO_HOOK ())
-    return;
-#endif
-
-  for (item = target_stack; item; item = item->next)
-    {
-      t = item->target_ops;
-
-      if (!t->to_has_memory)
-	continue;
-
-      if ((int)(t->to_stratum) <= (int)dummy_stratum)
-	continue;
-      if (has_all_mem)
-	printf_unfiltered("\tWhile running this, GDB does not access memory from...\n");
-      printf_unfiltered("%s:\n", t->to_longname);
-      (t->to_files_info)(t);
-      has_all_mem = t->to_has_all_memory;
-    }
-}
-
-/* This is to be called by the open routine before it does
-   anything.  */
-
-void
-target_preopen (from_tty)
-     int from_tty;
-{
-  dont_repeat();
-
-  if (target_has_execution)
-    {   
-      if (query ("A program is being debugged already.  Kill it? "))
-        target_kill ();
-      else
-        error ("Program not killed.");
-    }
-
-  /* Calling target_kill may remove the target from the stack.  But if
-     it doesn't (which seems like a win for UDI), remove it now.  */
-
-  if (target_has_execution)
-    pop_target ();
-}
-
-/* Detach a target after doing deferred register stores.  */
-
-void
-target_detach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  /* Handle any optimized stores to the inferior.  */
-#ifdef DO_DEFERRED_STORES
-  DO_DEFERRED_STORES;
-#endif
-  (current_target.to_detach) (args, from_tty);
-}
-
-void
-target_link (modname, t_reloc)
-     char *modname;
-     CORE_ADDR *t_reloc;
-{
-  if (STREQ(current_target.to_shortname, "rombug"))
-    {
-      (current_target.to_lookup_symbol) (modname, t_reloc);
-      if (*t_reloc == 0)
-      error("Unable to link to %s and get relocation in rombug", modname);
-    }
-  else
-    *t_reloc = (CORE_ADDR)-1;
-}
-
-/* Look through the list of possible targets for a target that can
-   execute a run or attach command without any other data.  This is
-   used to locate the default process stratum.
-
-   Result is always valid (error() is called for errors).  */
-
-static struct target_ops *
-find_default_run_target (do_mesg)
-     char *do_mesg;
-{
-  struct target_ops **t;
-  struct target_ops *runable = NULL;
-  int count;
-
-  count = 0;
-
-  for (t = target_structs; t < target_structs + target_struct_size;
-       ++t)
-    {
-      if ((*t)->to_can_run && target_can_run(*t))
-	{
-	  runable = *t;
-	  ++count;
-	}
-    }
-
-  if (count != 1)
-    error ("Don't know how to %s.  Try \"help target\".", do_mesg);
-
-  return runable;
-}
-
-void
-find_default_attach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  struct target_ops *t;
-
-  t = find_default_run_target("attach");
-  (t->to_attach) (args, from_tty);
-  return;
-}
-
-void
-find_default_require_attach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  struct target_ops *t;
-
-  t = find_default_run_target("require_attach");
-  (t->to_require_attach) (args, from_tty);
-  return;
-}
-
-void
-find_default_require_detach (pid, args, from_tty)
-  int  pid;
-  char *  args;
-  int  from_tty;
-{
-  struct target_ops *t;
-
-  t = find_default_run_target("require_detach");
-  (t->to_require_detach) (pid, args, from_tty);
-  return;
-}
-
-void
-find_default_create_inferior (exec_file, allargs, env)
-     char *exec_file;
-     char *allargs;
-     char **env;
-{
-  struct target_ops *t;
-
-  t = find_default_run_target("run");
-  (t->to_create_inferior) (exec_file, allargs, env);
-  return;
-}
-
-void
-find_default_clone_and_follow_inferior (child_pid, followed_child)
-  int  child_pid;
-  int  *followed_child;
-{
-  struct target_ops *t;
-
-  t = find_default_run_target("run");
-  (t->to_clone_and_follow_inferior) (child_pid, followed_child);
-  return;
-}
-
-static int
-return_zero ()
-{
-  return 0;
-}
-
-static int
-return_one ()
-{
-  return 1;
-}
-
-struct target_ops *
-find_core_target ()
-{
-  struct target_ops **t;
-  struct target_ops *runable = NULL;
-  int count;
-  
-  count = 0;
-  
-  for (t = target_structs; t < target_structs + target_struct_size;
-       ++t)
-    {
-      if ((*t)->to_stratum == core_stratum)
-	{
-	  runable = *t;
-	  ++count;
-	}
-    }
-  
-  return(count == 1 ? runable : NULL);
-}
-
-/* The inferior process has died.  Long live the inferior!  */
-
-void
-generic_mourn_inferior ()
-{
-  extern int show_breakpoint_hit_counts;
-
-  inferior_pid = 0;
-  attach_flag = 0;
-  breakpoint_init_inferior (inf_exited);
-  registers_changed ();
-
-#ifdef CLEAR_DEFERRED_STORES
-  /* Delete any pending stores to the inferior... */
-  CLEAR_DEFERRED_STORES;
-#endif
-
-  reopen_exec_file ();
-  reinit_frame_cache ();
-
-  /* It is confusing to the user for ignore counts to stick around
-     from previous runs of the inferior.  So clear them.  */
-  /* However, it is more confusing for the ignore counts to disappear when
-     using hit counts.  So don't clear them if we're counting hits.  */
-  if (!show_breakpoint_hit_counts)
-    breakpoint_clear_ignore_counts ();
-}
-
-/* This table must match in order and size the signals in enum target_signal
-   in target.h.  */
-static struct {
-  char *name;
-  char *string;
-  } signals [] =
-{
-  {"0", "Signal 0"},
-  {"SIGHUP", "Hangup"},
-  {"SIGINT", "Interrupt"},
-  {"SIGQUIT", "Quit"},
-  {"SIGILL", "Illegal instruction"},
-  {"SIGTRAP", "Trace/breakpoint trap"},
-  {"SIGABRT", "Aborted"},
-  {"SIGEMT", "Emulation trap"},
-  {"SIGFPE", "Arithmetic exception"},
-  {"SIGKILL", "Killed"},
-  {"SIGBUS", "Bus error"},
-  {"SIGSEGV", "Segmentation fault"},
-  {"SIGSYS", "Bad system call"},
-  {"SIGPIPE", "Broken pipe"},
-  {"SIGALRM", "Alarm clock"},
-  {"SIGTERM", "Terminated"},
-  {"SIGURG", "Urgent I/O condition"},
-  {"SIGSTOP", "Stopped (signal)"},
-  {"SIGTSTP", "Stopped (user)"},
-  {"SIGCONT", "Continued"},
-  {"SIGCHLD", "Child status changed"},
-  {"SIGTTIN", "Stopped (tty input)"},
-  {"SIGTTOU", "Stopped (tty output)"},
-  {"SIGIO", "I/O possible"},
-  {"SIGXCPU", "CPU time limit exceeded"},
-  {"SIGXFSZ", "File size limit exceeded"},
-  {"SIGVTALRM", "Virtual timer expired"},
-  {"SIGPROF", "Profiling timer expired"},
-  {"SIGWINCH", "Window size changed"},
-  {"SIGLOST", "Resource lost"},
-  {"SIGUSR1", "User defined signal 1"},
-  {"SIGUSR2", "User defined signal 2"},
-  {"SIGPWR", "Power fail/restart"},
-  {"SIGPOLL", "Pollable event occurred"},
-  {"SIGWIND", "SIGWIND"},
-  {"SIGPHONE", "SIGPHONE"},
-  {"SIGWAITING", "Process's LWPs are blocked"},
-  {"SIGLWP", "Signal LWP"},
-  {"SIGDANGER", "Swap space dangerously low"},
-  {"SIGGRANT", "Monitor mode granted"},
-  {"SIGRETRACT", "Need to relinquish monitor mode"},
-  {"SIGMSG", "Monitor mode data available"},
-  {"SIGSOUND", "Sound completed"},
-  {"SIGSAK", "Secure attention"},
-  {"SIGPRIO", "SIGPRIO"},
-  {"SIG33", "Real-time event 33"},
-  {"SIG34", "Real-time event 34"},
-  {"SIG35", "Real-time event 35"},
-  {"SIG36", "Real-time event 36"},
-  {"SIG37", "Real-time event 37"},
-  {"SIG38", "Real-time event 38"},
-  {"SIG39", "Real-time event 39"},
-  {"SIG40", "Real-time event 40"},
-  {"SIG41", "Real-time event 41"},
-  {"SIG42", "Real-time event 42"},
-  {"SIG43", "Real-time event 43"},
-  {"SIG44", "Real-time event 44"},
-  {"SIG45", "Real-time event 45"},
-  {"SIG46", "Real-time event 46"},
-  {"SIG47", "Real-time event 47"},
-  {"SIG48", "Real-time event 48"},
-  {"SIG49", "Real-time event 49"},
-  {"SIG50", "Real-time event 50"},
-  {"SIG51", "Real-time event 51"},
-  {"SIG52", "Real-time event 52"},
-  {"SIG53", "Real-time event 53"},
-  {"SIG54", "Real-time event 54"},
-  {"SIG55", "Real-time event 55"},
-  {"SIG56", "Real-time event 56"},
-  {"SIG57", "Real-time event 57"},
-  {"SIG58", "Real-time event 58"},
-  {"SIG59", "Real-time event 59"},
-  {"SIG60", "Real-time event 60"},
-  {"SIG61", "Real-time event 61"},
-  {"SIG62", "Real-time event 62"},
-  {"SIG63", "Real-time event 63"},
-
-#if defined(MACH) || defined(__MACH__)
-  /* Mach exceptions */
-  {"EXC_BAD_ACCESS", "Could not access memory"},
-  {"EXC_BAD_INSTRUCTION", "Illegal instruction/operand"},
-  {"EXC_ARITHMETIC", "Arithmetic exception"},
-  {"EXC_EMULATION", "Emulation instruction"},
-  {"EXC_SOFTWARE", "Software generated exception"},
-  {"EXC_BREAKPOINT", "Breakpoint"},
-#endif
-  {NULL, "Unknown signal"},
-  {NULL, "Internal error: printing TARGET_SIGNAL_DEFAULT"},
-
-  /* Last entry, used to check whether the table is the right size.  */
-  {NULL, "TARGET_SIGNAL_MAGIC"}
-};
-
-/* Return the string for a signal.  */
-char *
-target_signal_to_string (sig)
-     enum target_signal sig;
-{
-  return signals[sig].string;
-}
-
-/* Return the name for a signal.  */
-char *
-target_signal_to_name (sig)
-     enum target_signal sig;
-{
-  if (sig == TARGET_SIGNAL_UNKNOWN)
-    /* I think the code which prints this will always print it along with
-       the string, so no need to be verbose.  */
-    return "?";
-  return signals[sig].name;
-}
-
-/* Given a name, return its signal.  */
-enum target_signal
-target_signal_from_name (name)
-     char *name;
-{
-  enum target_signal sig;
-
-  /* It's possible we also should allow "SIGCLD" as well as "SIGCHLD"
-     for TARGET_SIGNAL_SIGCHLD.  SIGIOT, on the other hand, is more
-     questionable; seems like by now people should call it SIGABRT
-     instead.  */
-
-  /* This ugly cast brought to you by the native VAX compiler.  */
-  for (sig = TARGET_SIGNAL_HUP;
-       signals[sig].name != NULL;
-       sig = (enum target_signal)((int)sig + 1))
-    if (STREQ (name, signals[sig].name))
-      return sig;
-  return TARGET_SIGNAL_UNKNOWN;
-}
-
-/* The following functions are to help certain targets deal
-   with the signal/waitstatus stuff.  They could just as well be in
-   a file called native-utils.c or unixwaitstatus-utils.c or whatever.  */
-
-/* Convert host signal to our signals.  */
-enum target_signal
-target_signal_from_host (hostsig)
-     int hostsig;
-{
-  /* A switch statement would make sense but would require special kludges
-     to deal with the cases where more than one signal has the same number.  */
-
-  if (hostsig == 0) return TARGET_SIGNAL_0;
-
-#if defined (SIGHUP)
-  if (hostsig == SIGHUP) return TARGET_SIGNAL_HUP;
-#endif
-#if defined (SIGINT)
-  if (hostsig == SIGINT) return TARGET_SIGNAL_INT;
-#endif
-#if defined (SIGQUIT)
-  if (hostsig == SIGQUIT) return TARGET_SIGNAL_QUIT;
-#endif
-#if defined (SIGILL)
-  if (hostsig == SIGILL) return TARGET_SIGNAL_ILL;
-#endif
-#if defined (SIGTRAP)
-  if (hostsig == SIGTRAP) return TARGET_SIGNAL_TRAP;
-#endif
-#if defined (SIGABRT)
-  if (hostsig == SIGABRT) return TARGET_SIGNAL_ABRT;
-#endif
-#if defined (SIGEMT)
-  if (hostsig == SIGEMT) return TARGET_SIGNAL_EMT;
-#endif
-#if defined (SIGFPE)
-  if (hostsig == SIGFPE) return TARGET_SIGNAL_FPE;
-#endif
-#if defined (SIGKILL)
-  if (hostsig == SIGKILL) return TARGET_SIGNAL_KILL;
-#endif
-#if defined (SIGBUS)
-  if (hostsig == SIGBUS) return TARGET_SIGNAL_BUS;
-#endif
-#if defined (SIGSEGV)
-  if (hostsig == SIGSEGV) return TARGET_SIGNAL_SEGV;
-#endif
-#if defined (SIGSYS)
-  if (hostsig == SIGSYS) return TARGET_SIGNAL_SYS;
-#endif
-#if defined (SIGPIPE)
-  if (hostsig == SIGPIPE) return TARGET_SIGNAL_PIPE;
-#endif
-#if defined (SIGALRM)
-  if (hostsig == SIGALRM) return TARGET_SIGNAL_ALRM;
-#endif
-#if defined (SIGTERM)
-  if (hostsig == SIGTERM) return TARGET_SIGNAL_TERM;
-#endif
-#if defined (SIGUSR1)
-  if (hostsig == SIGUSR1) return TARGET_SIGNAL_USR1;
-#endif
-#if defined (SIGUSR2)
-  if (hostsig == SIGUSR2) return TARGET_SIGNAL_USR2;
-#endif
-#if defined (SIGCLD)
-  if (hostsig == SIGCLD) return TARGET_SIGNAL_CHLD;
-#endif
-#if defined (SIGCHLD)
-  if (hostsig == SIGCHLD) return TARGET_SIGNAL_CHLD;
-#endif
-#if defined (SIGPWR)
-  if (hostsig == SIGPWR) return TARGET_SIGNAL_PWR;
-#endif
-#if defined (SIGWINCH)
-  if (hostsig == SIGWINCH) return TARGET_SIGNAL_WINCH;
-#endif
-#if defined (SIGURG)
-  if (hostsig == SIGURG) return TARGET_SIGNAL_URG;
-#endif
-#if defined (SIGIO)
-  if (hostsig == SIGIO) return TARGET_SIGNAL_IO;
-#endif
-#if defined (SIGPOLL)
-  if (hostsig == SIGPOLL) return TARGET_SIGNAL_POLL;
-#endif
-#if defined (SIGSTOP)
-  if (hostsig == SIGSTOP) return TARGET_SIGNAL_STOP;
-#endif
-#if defined (SIGTSTP)
-  if (hostsig == SIGTSTP) return TARGET_SIGNAL_TSTP;
-#endif
-#if defined (SIGCONT)
-  if (hostsig == SIGCONT) return TARGET_SIGNAL_CONT;
-#endif
-#if defined (SIGTTIN)
-  if (hostsig == SIGTTIN) return TARGET_SIGNAL_TTIN;
-#endif
-#if defined (SIGTTOU)
-  if (hostsig == SIGTTOU) return TARGET_SIGNAL_TTOU;
-#endif
-#if defined (SIGVTALRM)
-  if (hostsig == SIGVTALRM) return TARGET_SIGNAL_VTALRM;
-#endif
-#if defined (SIGPROF)
-  if (hostsig == SIGPROF) return TARGET_SIGNAL_PROF;
-#endif
-#if defined (SIGXCPU)
-  if (hostsig == SIGXCPU) return TARGET_SIGNAL_XCPU;
-#endif
-#if defined (SIGXFSZ)
-  if (hostsig == SIGXFSZ) return TARGET_SIGNAL_XFSZ;
-#endif
-#if defined (SIGWIND)
-  if (hostsig == SIGWIND) return TARGET_SIGNAL_WIND;
-#endif
-#if defined (SIGPHONE)
-  if (hostsig == SIGPHONE) return TARGET_SIGNAL_PHONE;
-#endif
-#if defined (SIGLOST)
-  if (hostsig == SIGLOST) return TARGET_SIGNAL_LOST;
-#endif
-#if defined (SIGWAITING)
-  if (hostsig == SIGWAITING) return TARGET_SIGNAL_WAITING;
-#endif
-#if defined (SIGLWP)
-  if (hostsig == SIGLWP) return TARGET_SIGNAL_LWP;
-#endif
-#if defined (SIGDANGER)
-  if (hostsig == SIGDANGER) return TARGET_SIGNAL_DANGER;
-#endif
-#if defined (SIGGRANT)
-  if (hostsig == SIGGRANT) return TARGET_SIGNAL_GRANT;
-#endif
-#if defined (SIGRETRACT)
-  if (hostsig == SIGRETRACT) return TARGET_SIGNAL_RETRACT;
-#endif
-#if defined (SIGMSG)
-  if (hostsig == SIGMSG) return TARGET_SIGNAL_MSG;
-#endif
-#if defined (SIGSOUND)
-  if (hostsig == SIGSOUND) return TARGET_SIGNAL_SOUND;
-#endif
-#if defined (SIGSAK)
-  if (hostsig == SIGSAK) return TARGET_SIGNAL_SAK;
-#endif
-#if defined (SIGPRIO)
-  if (hostsig == SIGPRIO) return TARGET_SIGNAL_PRIO;
-#endif
-
-  /* Mach exceptions.  Assumes that the values for EXC_ are positive! */
-#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
-  if (hostsig == _NSIG + EXC_BAD_ACCESS) return TARGET_EXC_BAD_ACCESS;
-#endif
-#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
-  if (hostsig == _NSIG + EXC_BAD_INSTRUCTION) return TARGET_EXC_BAD_INSTRUCTION;
-#endif
-#if defined (EXC_ARITHMETIC) && defined (_NSIG)
-  if (hostsig == _NSIG + EXC_ARITHMETIC) return TARGET_EXC_ARITHMETIC;
-#endif
-#if defined (EXC_EMULATION) && defined (_NSIG)
-  if (hostsig == _NSIG + EXC_EMULATION) return TARGET_EXC_EMULATION;
-#endif
-#if defined (EXC_SOFTWARE) && defined (_NSIG)
-  if (hostsig == _NSIG + EXC_SOFTWARE) return TARGET_EXC_SOFTWARE;
-#endif
-#if defined (EXC_BREAKPOINT) && defined (_NSIG)
-  if (hostsig == _NSIG + EXC_BREAKPOINT) return TARGET_EXC_BREAKPOINT;
-#endif
-
-#if defined (REALTIME_LO)
-  if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
-    return (enum target_signal)
-      (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
-#endif
-  return TARGET_SIGNAL_UNKNOWN;
-}
-
-int
-target_signal_to_host (oursig)
-     enum target_signal oursig;
-{
-  switch (oursig)
-    {
-    case TARGET_SIGNAL_0: return 0;
-
-#if defined (SIGHUP)
-    case TARGET_SIGNAL_HUP: return SIGHUP;
-#endif
-#if defined (SIGINT)
-    case TARGET_SIGNAL_INT: return SIGINT;
-#endif
-#if defined (SIGQUIT)
-    case TARGET_SIGNAL_QUIT: return SIGQUIT;
-#endif
-#if defined (SIGILL)
-    case TARGET_SIGNAL_ILL: return SIGILL;
-#endif
-#if defined (SIGTRAP)
-    case TARGET_SIGNAL_TRAP: return SIGTRAP;
-#endif
-#if defined (SIGABRT)
-    case TARGET_SIGNAL_ABRT: return SIGABRT;
-#endif
-#if defined (SIGEMT)
-    case TARGET_SIGNAL_EMT: return SIGEMT;
-#endif
-#if defined (SIGFPE)
-    case TARGET_SIGNAL_FPE: return SIGFPE;
-#endif
-#if defined (SIGKILL)
-    case TARGET_SIGNAL_KILL: return SIGKILL;
-#endif
-#if defined (SIGBUS)
-    case TARGET_SIGNAL_BUS: return SIGBUS;
-#endif
-#if defined (SIGSEGV)
-    case TARGET_SIGNAL_SEGV: return SIGSEGV;
-#endif
-#if defined (SIGSYS)
-    case TARGET_SIGNAL_SYS: return SIGSYS;
-#endif
-#if defined (SIGPIPE)
-    case TARGET_SIGNAL_PIPE: return SIGPIPE;
-#endif
-#if defined (SIGALRM)
-    case TARGET_SIGNAL_ALRM: return SIGALRM;
-#endif
-#if defined (SIGTERM)
-    case TARGET_SIGNAL_TERM: return SIGTERM;
-#endif
-#if defined (SIGUSR1)
-    case TARGET_SIGNAL_USR1: return SIGUSR1;
-#endif
-#if defined (SIGUSR2)
-    case TARGET_SIGNAL_USR2: return SIGUSR2;
-#endif
-#if defined (SIGCHLD) || defined (SIGCLD)
-    case TARGET_SIGNAL_CHLD: 
-#if defined (SIGCHLD)
-      return SIGCHLD;
-#else
-      return SIGCLD;
-#endif
-#endif /* SIGCLD or SIGCHLD */
-#if defined (SIGPWR)
-    case TARGET_SIGNAL_PWR: return SIGPWR;
-#endif
-#if defined (SIGWINCH)
-    case TARGET_SIGNAL_WINCH: return SIGWINCH;
-#endif
-#if defined (SIGURG)
-    case TARGET_SIGNAL_URG: return SIGURG;
-#endif
-#if defined (SIGIO)
-    case TARGET_SIGNAL_IO: return SIGIO;
-#endif
-#if defined (SIGPOLL)
-    case TARGET_SIGNAL_POLL: return SIGPOLL;
-#endif
-#if defined (SIGSTOP)
-    case TARGET_SIGNAL_STOP: return SIGSTOP;
-#endif
-#if defined (SIGTSTP)
-    case TARGET_SIGNAL_TSTP: return SIGTSTP;
-#endif
-#if defined (SIGCONT)
-    case TARGET_SIGNAL_CONT: return SIGCONT;
-#endif
-#if defined (SIGTTIN)
-    case TARGET_SIGNAL_TTIN: return SIGTTIN;
-#endif
-#if defined (SIGTTOU)
-    case TARGET_SIGNAL_TTOU: return SIGTTOU;
-#endif
-#if defined (SIGVTALRM)
-    case TARGET_SIGNAL_VTALRM: return SIGVTALRM;
-#endif
-#if defined (SIGPROF)
-    case TARGET_SIGNAL_PROF: return SIGPROF;
-#endif
-#if defined (SIGXCPU)
-    case TARGET_SIGNAL_XCPU: return SIGXCPU;
-#endif
-#if defined (SIGXFSZ)
-    case TARGET_SIGNAL_XFSZ: return SIGXFSZ;
-#endif
-#if defined (SIGWIND)
-    case TARGET_SIGNAL_WIND: return SIGWIND;
-#endif
-#if defined (SIGPHONE)
-    case TARGET_SIGNAL_PHONE: return SIGPHONE;
-#endif
-#if defined (SIGLOST)
-    case TARGET_SIGNAL_LOST: return SIGLOST;
-#endif
-#if defined (SIGWAITING)
-    case TARGET_SIGNAL_WAITING: return SIGWAITING;
-#endif
-#if defined (SIGLWP)
-    case TARGET_SIGNAL_LWP: return SIGLWP;
-#endif
-#if defined (SIGDANGER)
-    case TARGET_SIGNAL_DANGER: return SIGDANGER;
-#endif
-#if defined (SIGGRANT)
-    case TARGET_SIGNAL_GRANT: return SIGGRANT;
-#endif
-#if defined (SIGRETRACT)
-    case TARGET_SIGNAL_RETRACT: return SIGRETRACT;
-#endif
-#if defined (SIGMSG)
-    case TARGET_SIGNAL_MSG: return SIGMSG;
-#endif
-#if defined (SIGSOUND)
-    case TARGET_SIGNAL_SOUND: return SIGSOUND;
-#endif
-#if defined (SIGSAK)
-    case TARGET_SIGNAL_SAK: return SIGSAK;
-#endif
-#if defined (SIGPRIO)
-    case TARGET_SIGNAL_PRIO: return SIGPRIO;
-#endif
-
-      /* Mach exceptions.  Assumes that the values for EXC_ are positive! */
-#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
-    case TARGET_EXC_BAD_ACCESS: return _NSIG + EXC_BAD_ACCESS;
-#endif
-#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
-    case TARGET_EXC_BAD_INSTRUCTION: return _NSIG + EXC_BAD_INSTRUCTION;
-#endif
-#if defined (EXC_ARITHMETIC) && defined (_NSIG)
-    case TARGET_EXC_ARITHMETIC: return _NSIG + EXC_ARITHMETIC;
-#endif
-#if defined (EXC_EMULATION) && defined (_NSIG)
-    case TARGET_EXC_EMULATION: return _NSIG + EXC_EMULATION;
-#endif
-#if defined (EXC_SOFTWARE) && defined (_NSIG)
-    case TARGET_EXC_SOFTWARE: return _NSIG + EXC_SOFTWARE;
-#endif
-#if defined (EXC_BREAKPOINT) && defined (_NSIG)
-    case TARGET_EXC_BREAKPOINT: return _NSIG + EXC_BREAKPOINT;
-#endif
-
-    default:
-#if defined (REALTIME_LO)
-      if (oursig >= TARGET_SIGNAL_REALTIME_33
-	  && oursig <= TARGET_SIGNAL_REALTIME_63)
-	{
-	  int retsig =
-	    (int)oursig - (int)TARGET_SIGNAL_REALTIME_33 + REALTIME_LO;
-	  if (retsig < REALTIME_HI)
-	    return retsig;
-	}
-#endif
-      /* The user might be trying to do "signal SIGSAK" where this system
-	 doesn't have SIGSAK.  */
-      warning ("Signal %s does not exist on this system.\n",
-	       target_signal_to_name (oursig));
-      return 0;
-    }
-}
-
-/* Helper function for child_wait and the Lynx derivatives of child_wait.
-   HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
-   translation of that in OURSTATUS.  */
-void
-store_waitstatus (ourstatus, hoststatus)
-     struct target_waitstatus *ourstatus;
-     int hoststatus;
-{
-#ifdef CHILD_SPECIAL_WAITSTATUS
-  /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
-     if it wants to deal with hoststatus.  */
-  if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
-    return;
-#endif
-
-  if (WIFEXITED (hoststatus))
-    {
-      ourstatus->kind = TARGET_WAITKIND_EXITED;
-      ourstatus->value.integer = WEXITSTATUS (hoststatus);
-    }
-  else if (!WIFSTOPPED (hoststatus))
-    {
-      ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
-      ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
-    }
-  else
-    {
-      ourstatus->kind = TARGET_WAITKIND_STOPPED;
-      ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
-    }
-}
-
-/* In some circumstances we allow a command to specify a numeric
-   signal.  The idea is to keep these circumstances limited so that
-   users (and scripts) develop portable habits.  For comparison,
-   POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
-   numeric signal at all is obscelescent.  We are slightly more
-   lenient and allow 1-15 which should match host signal numbers on
-   most systems.  Use of symbolic signal names is strongly encouraged.  */
-
-enum target_signal
-target_signal_from_command (num)
-     int num;
-{
-  if (num >= 1 && num <= 15)
-    return (enum target_signal)num;
-  error ("Only signals 1-15 are valid as numeric signals.\n\
-Use \"info signals\" for a list of symbolic signals.");
-}
-
-/* Returns zero to leave the inferior alone, one to interrupt it.  */
-int (*target_activity_function) PARAMS ((void));
-int target_activity_fd;
-
-/* Convert a normal process ID to a string.  Returns the string in a static
-   buffer.  */
-
-char *
-normal_pid_to_str (pid)
-     int pid;
-{
-  static char buf[30];
-
-  if (STREQ (current_target.to_shortname, "remote"))
-    sprintf (buf, "thread %d\0", pid);
-  else
-    sprintf (buf, "process %d\0", pid);
-
-  return buf;
-}
-
-/* Some targets (such as ttrace-based HPUX) don't allow us to request
-   notification of inferior events such as fork and vork immediately
-   after the inferior is created.  (This because of how gdb gets an
-   inferior created via invoking a shell to do it.  In such a scenario,
-   if the shell init file has commands in it, the shell will fork and
-   exec for each of those commands, and we will see each such fork
-   event.  Very bad.)
-   
-   This function is used by all targets that allow us to request
-   notification of forks, etc at inferior creation time; e.g., in
-   target_acknowledge_forked_child.
-   */
-void
-normal_target_post_startup_inferior (pid)
-  int  pid;
-{
-  /* This space intentionally left blank. */
-}
-
-
-#ifdef MAINTENANCE_CMDS
-static struct target_ops debug_target;
-
-static void
-debug_to_open (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  debug_target.to_open (args, from_tty);
-
-  fprintf_unfiltered (gdb_stderr, "target_open (%s, %d)\n", args, from_tty);
-}
-
-static void
-debug_to_close (quitting)
-     int quitting;
-{
-  debug_target.to_close (quitting);
-
-  fprintf_unfiltered (gdb_stderr, "target_close (%d)\n", quitting);
-}
-
-static void
-debug_to_attach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  debug_target.to_attach (args, from_tty);
-
-  fprintf_unfiltered (gdb_stderr, "target_attach (%s, %d)\n", args, from_tty);
-}
-
-
-static void
-debug_to_post_attach (pid)
-  int  pid;
-{
-  debug_target.to_post_attach (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_post_attach (%d)\n", pid);
-}
-
-static void
-debug_to_require_attach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  debug_target.to_require_attach (args, from_tty);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_require_attach (%s, %d)\n", args, from_tty);
-}
-
-static void
-debug_to_detach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  debug_target.to_detach (args, from_tty);
-
-  fprintf_unfiltered (gdb_stderr, "target_detach (%s, %d)\n", args, from_tty);
-}
-
-static void
-debug_to_require_detach (pid, args, from_tty)
-  int  pid;
-  char *  args;
-  int  from_tty;
-{
-  debug_target.to_require_detach (pid, args, from_tty);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_require_detach (%d, %s, %d)\n", pid, args, from_tty);
-}
-
-static void
-debug_to_resume (pid, step, siggnal)
-     int pid;
-     int step;
-     enum target_signal siggnal;
-{
-  debug_target.to_resume (pid, step, siggnal);
-
-  fprintf_unfiltered (gdb_stderr, "target_resume (%d, %s, %s)\n", pid,
-		      step ? "step" : "continue",
-		      target_signal_to_name (siggnal));
-}
-
-static int
-debug_to_wait (pid, status)
-     int pid;
-     struct target_waitstatus *status;
-{
-  int retval;
-
-  retval = debug_target.to_wait (pid, status);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_wait (%d, status) = %d,   ", pid, retval);
-  fprintf_unfiltered (gdb_stderr, "status->kind = ");
-  switch (status->kind)
-    {
-    case TARGET_WAITKIND_EXITED:
-      fprintf_unfiltered (gdb_stderr, "exited, status = %d\n",
-			  status->value.integer);
-      break;
-    case TARGET_WAITKIND_STOPPED:
-      fprintf_unfiltered (gdb_stderr, "stopped, signal = %s\n",
-			  target_signal_to_name (status->value.sig));
-      break;
-    case TARGET_WAITKIND_SIGNALLED:
-      fprintf_unfiltered (gdb_stderr, "signalled, signal = %s\n",
-			  target_signal_to_name (status->value.sig));
-      break;
-    case TARGET_WAITKIND_LOADED:
-      fprintf_unfiltered (gdb_stderr, "loaded\n");
-      break;
-    case TARGET_WAITKIND_FORKED:
-      fprintf_unfiltered (gdb_stderr, "forked\n");
-      break;
-    case TARGET_WAITKIND_VFORKED:
-      fprintf_unfiltered (gdb_stderr, "vforked\n");
-      break;
-    case TARGET_WAITKIND_EXECD:
-      fprintf_unfiltered (gdb_stderr, "execd\n");
-      break;
-    case TARGET_WAITKIND_SPURIOUS:
-      fprintf_unfiltered (gdb_stderr, "spurious\n");
-      break;
-    default:
-      fprintf_unfiltered (gdb_stderr, "unknown???\n");
-      break;
-    }
-
-  return retval;
-}
-
-static void
-debug_to_post_wait (pid, status)
-  int  pid;
-  int  status;
-{
-  debug_target.to_post_wait (pid, status);
-
-  fprintf_unfiltered (gdb_stderr, "target_post_wait (%d, %d)\n",
-		      pid, status);
-}
-
-static void
-debug_to_fetch_registers (regno)
-     int regno;
-{
-  debug_target.to_fetch_registers (regno);
-
-  fprintf_unfiltered (gdb_stderr, "target_fetch_registers (%s)",
-		      regno != -1 ? REGISTER_NAME (regno) : "-1");
-  if (regno != -1)
-    fprintf_unfiltered (gdb_stderr, " = 0x%x %d",
-			(unsigned long) read_register (regno),
-			read_register (regno));
-  fprintf_unfiltered (gdb_stderr, "\n");
-}
-
-static void
-debug_to_store_registers (regno)
-     int regno;
-{
-  debug_target.to_store_registers (regno);
-
-  if (regno >= 0 && regno < NUM_REGS)
-    fprintf_unfiltered (gdb_stderr, "target_store_registers (%s) = 0x%x %d\n",
-			REGISTER_NAME (regno),
-			(unsigned long) read_register (regno),
-			(unsigned long) read_register (regno));
-  else
-    fprintf_unfiltered (gdb_stderr, "target_store_registers (%d)\n", regno);
-}
-
-static void
-debug_to_prepare_to_store ()
-{
-  debug_target.to_prepare_to_store ();
-
-  fprintf_unfiltered (gdb_stderr, "target_prepare_to_store ()\n");
-}
-
-static int
-debug_to_xfer_memory (memaddr, myaddr, len, write, target)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int write;
-     struct target_ops *target;
-{
-  int retval;
-
-  retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write, target);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
-		      (unsigned int) memaddr, /* possable truncate long long */
-		      len, write ? "write" : "read", retval);
-
-  
-
-  if (retval > 0)
-    {
-      int i;
-
-      fputs_unfiltered (", bytes =", gdb_stderr);
-      for (i = 0; i < retval; i++)
-	{
-	  if ((((long) &(myaddr[i])) & 0xf) == 0)
-	    fprintf_unfiltered (gdb_stderr, "\n");
-	  fprintf_unfiltered (gdb_stderr, " %02x", myaddr[i] & 0xff);
-	}
-    }
-
-  fputc_unfiltered ('\n', gdb_stderr);
-
-  return retval;
-}
-
-static void
-debug_to_files_info (target)
-     struct target_ops *target;
-{
-  debug_target.to_files_info (target);
-
-  fprintf_unfiltered (gdb_stderr, "target_files_info (xxx)\n");
-}
-
-static int
-debug_to_insert_breakpoint (addr, save)
-     CORE_ADDR addr;
-     char *save;
-{
-  int retval;
-
-  retval = debug_target.to_insert_breakpoint (addr, save);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_insert_breakpoint (0x%x, xxx) = %d\n",
-		      (unsigned long) addr, retval);
-  return retval;
-}
-
-static int
-debug_to_remove_breakpoint (addr, save)
-     CORE_ADDR addr;
-     char *save;
-{
-  int retval;
-
-  retval = debug_target.to_remove_breakpoint (addr, save);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_remove_breakpoint (0x%x, xxx) = %d\n",
-		      (unsigned long)addr, retval);
-  return retval;
-}
-
-static void
-debug_to_terminal_init ()
-{
-  debug_target.to_terminal_init ();
-
-  fprintf_unfiltered (gdb_stderr, "target_terminal_init ()\n");
-}
-
-static void
-debug_to_terminal_inferior ()
-{
-  debug_target.to_terminal_inferior ();
-
-  fprintf_unfiltered (gdb_stderr, "target_terminal_inferior ()\n");
-}
-
-static void
-debug_to_terminal_ours_for_output ()
-{
-  debug_target.to_terminal_ours_for_output ();
-
-  fprintf_unfiltered (gdb_stderr, "target_terminal_ours_for_output ()\n");
-}
-
-static void
-debug_to_terminal_ours ()
-{
-  debug_target.to_terminal_ours ();
-
-  fprintf_unfiltered (gdb_stderr, "target_terminal_ours ()\n");
-}
-
-static void
-debug_to_terminal_info (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  debug_target.to_terminal_info (arg, from_tty);
-
-  fprintf_unfiltered (gdb_stderr, "target_terminal_info (%s, %d)\n", arg,
-		      from_tty);
-}
-
-static void
-debug_to_kill ()
-{
-  debug_target.to_kill ();
-
-  fprintf_unfiltered (gdb_stderr, "target_kill ()\n");
-}
-
-static void
-debug_to_load (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  debug_target.to_load (args, from_tty);
-
-  fprintf_unfiltered (gdb_stderr, "target_load (%s, %d)\n", args, from_tty);
-}
-
-static int
-debug_to_lookup_symbol (name, addrp)
-     char *name;
-     CORE_ADDR *addrp;
-{
-  int retval;
-
-  retval = debug_target.to_lookup_symbol (name, addrp);
-
-  fprintf_unfiltered (gdb_stderr, "target_lookup_symbol (%s, xxx)\n", name);
-
-  return retval;
-}
-
-static void
-debug_to_create_inferior (exec_file, args, env)
-     char *exec_file;
-     char *args;
-     char **env;
-{
-  debug_target.to_create_inferior (exec_file, args, env);
-
-  fprintf_unfiltered (gdb_stderr, "target_create_inferior (%s, %s, xxx)\n",
-		      exec_file, args);
-}
-
-static void
-debug_to_post_startup_inferior (pid)
-  int  pid;
-{
-  debug_target.to_post_startup_inferior (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_post_startup_inferior (%d)\n",
-		      pid);
-}
-
-static void
-debug_to_acknowledge_created_inferior (pid)
-  int  pid;
-{
-  debug_target.to_acknowledge_created_inferior (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_acknowledge_created_inferior (%d)\n",
-		      pid);
-}
-
-static void
-debug_to_clone_and_follow_inferior (child_pid, followed_child)
-  int  child_pid;
-  int  *followed_child;
-{
-  debug_target.to_clone_and_follow_inferior (child_pid, followed_child);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_clone_and_follow_inferior (%d, %d)\n",
-		      child_pid, *followed_child);
-}
-
-static void
-debug_to_post_follow_inferior_by_clone ()
-{
-  debug_target.to_post_follow_inferior_by_clone ();
-
-  fprintf_unfiltered (gdb_stderr, "target_post_follow_inferior_by_clone ()\n");
-}
-
-static int
-debug_to_insert_fork_catchpoint (pid)
-  int  pid;
-{
-  int  retval;
-
-  retval = debug_target.to_insert_fork_catchpoint (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_insert_fork_catchpoint (%d) = %d\n",
-                      pid, retval);
-
-  return retval;
-}
-
-static int
-debug_to_remove_fork_catchpoint (pid)
-  int  pid;
-{
-  int  retval;
-
-  retval = debug_target.to_remove_fork_catchpoint (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_remove_fork_catchpoint (%d) = %d\n",
-                      pid, retval);
-
-  return retval;
-}
-
-static int
-debug_to_insert_vfork_catchpoint (pid)
-  int  pid;
-{
-  int  retval;
-
-  retval = debug_target.to_insert_vfork_catchpoint (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_insert_vfork_catchpoint (%d)= %d\n",
-                      pid, retval);
-
-  return retval;
-}
-
-static int
-debug_to_remove_vfork_catchpoint (pid)
-  int  pid;
-{
-  int  retval;
-
-  retval = debug_target.to_remove_vfork_catchpoint (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_remove_vfork_catchpoint (%d) = %d\n",
-                      pid, retval);
-
-  return retval;
-}
-
-static int
-debug_to_has_forked (pid, child_pid)
-  int  pid;
-  int *  child_pid;
-{
-  int  has_forked;
-
-  has_forked = debug_target.to_has_forked (pid, child_pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_has_forked (%d, %d) = %d\n",
-                      pid, *child_pid, has_forked);
-
-  return has_forked;
-}
-
-static int
-debug_to_has_vforked (pid, child_pid)
-  int  pid;
-  int *  child_pid;
-{
-  int  has_vforked;
-
-  has_vforked = debug_target.to_has_vforked (pid, child_pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_has_vforked (%d, %d) = %d\n",
-                      pid, *child_pid, has_vforked);
-
-  return has_vforked;
-}
-
-static int
-debug_to_can_follow_vfork_prior_to_exec ()
-{
-  int  can_immediately_follow_vfork;
-
-  can_immediately_follow_vfork = debug_target.to_can_follow_vfork_prior_to_exec ();
-
-  fprintf_unfiltered (gdb_stderr, "target_can_follow_vfork_prior_to_exec () = %d\n",
-                      can_immediately_follow_vfork);
-
-  return can_immediately_follow_vfork;
-}
-
-static void
-debug_to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
-  int  parent_pid;
-  int  followed_parent;
-  int  child_pid;
-  int  followed_child;
-{
-  debug_target.to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_post_follow_vfork (%d, %d, %d, %d)\n",
-                      parent_pid, followed_parent, child_pid, followed_child);
-}
-
-static int
-debug_to_insert_exec_catchpoint (pid)
-  int  pid;
-{
-  int  retval;
-
-  retval = debug_target.to_insert_exec_catchpoint (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_insert_exec_catchpoint (%d) = %d\n",
-                      pid, retval);
-
-  return retval;
-}
-
-static int
-debug_to_remove_exec_catchpoint (pid)
-  int  pid;
-{
-  int  retval;
-
-  retval = debug_target.to_remove_exec_catchpoint (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_remove_exec_catchpoint (%d) = %d\n",
-                      pid, retval);
-
-  return retval;
-}
-
-static int
-debug_to_has_execd (pid, execd_pathname)
-  int  pid;
-  char **  execd_pathname;
-{
-  int  has_execd;
-
-  has_execd = debug_target.to_has_execd (pid, execd_pathname);
-
-  fprintf_unfiltered (gdb_stderr, "target_has_execd (%d, %s) = %d\n",
-                      pid, *execd_pathname, has_execd);
-
-  return has_execd;
-}
-
-static int
-debug_to_reported_exec_events_per_exec_call ()
-{
-  int  reported_exec_events;
-
-  reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_reported_exec_events_per_exec_call () = %d\n",
-                      reported_exec_events);
-
-  return reported_exec_events;
-}
-
-static int
-debug_to_has_syscall_event (pid, kind, syscall_id)
-  int  pid;
-  enum target_waitkind *  kind;
-  int *  syscall_id;
-{
-  int  has_syscall_event;
-  char *  kind_spelling = "??";
-
-  has_syscall_event = debug_target.to_has_syscall_event (pid, kind, syscall_id);
-  if (has_syscall_event)
-    {
-      switch (*kind)
-        {
-          case TARGET_WAITKIND_SYSCALL_ENTRY:
-            kind_spelling = "SYSCALL_ENTRY";
-            break;
-          case TARGET_WAITKIND_SYSCALL_RETURN:
-            kind_spelling = "SYSCALL_RETURN";
-            break;
-          default:
-            break;
-        }
-    }
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target_has_syscall_event (%d, %s, %d) = %d\n",
-                      pid, kind_spelling, *syscall_id, has_syscall_event);
-
-  return has_syscall_event;
-}
-
-static int
-debug_to_has_exited (pid, wait_status, exit_status)
-  int  pid;
-  int  wait_status;
-  int *  exit_status;
-{
-  int  has_exited;
-
-  has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
-
-  fprintf_unfiltered (gdb_stderr, "target_has_exited (%d, %d, %d) = %d\n",
-                      pid, wait_status, *exit_status, has_exited);
-
-  return has_exited;
-}
-
-static void
-debug_to_mourn_inferior ()
-{
-  debug_target.to_mourn_inferior ();
-
-  fprintf_unfiltered (gdb_stderr, "target_mourn_inferior ()\n");
-}
-
-static int
-debug_to_can_run ()
-{
-  int retval;
-
-  retval = debug_target.to_can_run ();
-
-  fprintf_unfiltered (gdb_stderr, "target_can_run () = %d\n", retval);
-
-  return retval;
-}
-
-static void
-debug_to_notice_signals (pid)
-     int pid;
-{
-  debug_target.to_notice_signals (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_notice_signals (%d)\n", pid);
-}
-
-static int
-debug_to_thread_alive (pid)
-     int pid;
-{
-  int retval;
-
-  retval = debug_target.to_thread_alive (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_thread_alive (%d) = %d\n",
-		      pid, retval);
-
-  return retval;
-}
-
-static void
-debug_to_stop ()
-{
-  debug_target.to_stop ();
-
-  fprintf_unfiltered (gdb_stderr, "target_stop ()\n");
-}
-
-static int
-debug_to_query (type, req, resp, siz)
-  char type;
-  char *req;
-  char *resp;
-  int *siz;
-{
-  int retval;
-
-  retval = debug_target.to_query (type, req, resp, siz);
-
-  fprintf_unfiltered (gdb_stderr, "target_query (%c, %s, %s,  %d) = %d\n", type, req, resp, *siz, retval);
-
-  return retval;
-}
-
-static struct symtab_and_line *
-debug_to_enable_exception_callback (kind, enable)
-  enum exception_event_kind kind;
-  int enable;
-{
-  debug_target.to_enable_exception_callback (kind, enable);
-
-  fprintf_unfiltered (gdb_stderr,
-		      "target get_exception_callback_sal (%d, %d)\n",
-		      kind, enable);
-}
-
-static struct exception_event_record *
-debug_to_get_current_exception_event ()
-{
-  debug_target.to_get_current_exception_event();
-
-  fprintf_unfiltered (gdb_stderr, "target get_current_exception_event ()\n");
-}
-
-static char *
-debug_to_pid_to_exec_file (pid)
-  int  pid;
-{
-  char *  exec_file;
-
-  exec_file = debug_target.to_pid_to_exec_file (pid);
-
-  fprintf_unfiltered (gdb_stderr, "target_pid_to_exec_file (%d) = %s\n",
-                      pid, exec_file);
-
-  return exec_file;
-}
-
-static char *
-debug_to_core_file_to_sym_file (core)
-  char *  core;
-{
-  char *  sym_file;
-
-  sym_file = debug_target.to_core_file_to_sym_file (core);
-
-  fprintf_unfiltered (gdb_stderr, "target_core_file_to_sym_file (%s) = %s\n",
-                      core, sym_file);
-
-  return sym_file;
-}
-
-static void
-setup_target_debug ()
-{
-  memcpy (&debug_target, &current_target, sizeof debug_target);
-
-  current_target.to_open = debug_to_open;
-  current_target.to_close = debug_to_close;
-  current_target.to_attach = debug_to_attach;
-  current_target.to_post_attach = debug_to_post_attach;
-  current_target.to_require_attach = debug_to_require_attach;
-  current_target.to_detach = debug_to_detach;
-  current_target.to_require_detach = debug_to_require_detach;
-  current_target.to_resume = debug_to_resume;
-  current_target.to_wait = debug_to_wait;
-  current_target.to_post_wait = debug_to_post_wait;
-  current_target.to_fetch_registers = debug_to_fetch_registers;
-  current_target.to_store_registers = debug_to_store_registers;
-  current_target.to_prepare_to_store = debug_to_prepare_to_store;
-  current_target.to_xfer_memory = debug_to_xfer_memory;
-  current_target.to_files_info = debug_to_files_info;
-  current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
-  current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
-  current_target.to_terminal_init = debug_to_terminal_init;
-  current_target.to_terminal_inferior = debug_to_terminal_inferior;
-  current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
-  current_target.to_terminal_ours = debug_to_terminal_ours;
-  current_target.to_terminal_info = debug_to_terminal_info;
-  current_target.to_kill = debug_to_kill;
-  current_target.to_load = debug_to_load;
-  current_target.to_lookup_symbol = debug_to_lookup_symbol;
-  current_target.to_create_inferior = debug_to_create_inferior;
-  current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
-  current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
-  current_target.to_clone_and_follow_inferior = debug_to_clone_and_follow_inferior;
-  current_target.to_post_follow_inferior_by_clone = debug_to_post_follow_inferior_by_clone;
-  current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
-  current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
-  current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
-  current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
-  current_target.to_has_forked = debug_to_has_forked;
-  current_target.to_has_vforked = debug_to_has_vforked;
-  current_target.to_can_follow_vfork_prior_to_exec = debug_to_can_follow_vfork_prior_to_exec;
-  current_target.to_post_follow_vfork = debug_to_post_follow_vfork;
-  current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
-  current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
-  current_target.to_has_execd = debug_to_has_execd;
-  current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
-  current_target.to_has_syscall_event = debug_to_has_syscall_event;
-  current_target.to_has_exited = debug_to_has_exited;
-  current_target.to_mourn_inferior = debug_to_mourn_inferior;
-  current_target.to_can_run = debug_to_can_run;
-  current_target.to_notice_signals = debug_to_notice_signals;
-  current_target.to_thread_alive = debug_to_thread_alive;
-  current_target.to_stop = debug_to_stop;
-  current_target.to_query = debug_to_query;
-  current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
-  current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
-  current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
-  current_target.to_core_file_to_sym_file = debug_to_core_file_to_sym_file;
-
-}
-#endif /* MAINTENANCE_CMDS */
-
-static char targ_desc[] = 
-    "Names of targets and files being debugged.\n\
-Shows the entire stack of targets currently in use (including the exec-file,\n\
-core-file, and process, if any), as well as the symbol file name.";
-
-void
-initialize_targets ()
-{
-  push_target (&dummy_target);
-
-  add_info ("target", target_info, targ_desc);
-  add_info ("files", target_info, targ_desc);
-
-#ifdef MAINTENANCE_CMDS
-  add_show_from_set (
-     add_set_cmd ("targetdebug", class_maintenance, var_zinteger,
-		  (char *)&targetdebug,
-		 "Set target debugging.\n\
-When non-zero, target debugging is enabled.", &setlist),
-		     &showlist);
-#endif
-
-  if (!STREQ (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC"))
-    abort ();
-}