Initial creation of sourceware repository

1 files changed, 0 insertions, 1003 deletions

diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
deleted file mode 100644
index e10fced..0000000
--- a/gdb/remote-sim.c
+++ /dev/null
@@ -1,1003 +0,0 @@
-/* Generic remote debugging interface for simulators.
-   Copyright 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
-   Contributed by Cygnus Support.
-   Steve Chamberlain (sac@cygnus.com).
-
-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 "inferior.h"
-#include "wait.h"
-#include "value.h"
-#include "gdb_string.h"
-#include <ctype.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <setjmp.h>
-#include <errno.h>
-#include "terminal.h"
-#include "target.h"
-#include "gdbcore.h"
-#include "callback.h"
-#include "remote-sim.h"
-#include "remote-utils.h"
-#include "command.h"
-
-/* Prototypes */
-
-static void dump_mem PARAMS ((char *buf, int len));
-
-static void init_callbacks PARAMS ((void));
-
-static void end_callbacks PARAMS ((void));
-
-static int gdb_os_write_stdout PARAMS ((host_callback *, const char *, int));
-
-static void gdb_os_flush_stdout PARAMS ((host_callback *));
-
-static int gdb_os_write_stderr PARAMS ((host_callback *, const char *, int));
-
-static void gdb_os_flush_stderr PARAMS ((host_callback *));
-
-static int gdb_os_poll_quit PARAMS ((host_callback *));
-
-/* printf_filtered is depreciated */
-static void gdb_os_printf_filtered PARAMS ((host_callback *, const char *, ...));
-
-static void gdb_os_vprintf_filtered PARAMS ((host_callback *, const char *, va_list));
-
-static void gdb_os_evprintf_filtered PARAMS ((host_callback *, const char *, va_list));
-
-static void gdb_os_error PARAMS ((host_callback *, const char *, ...));
-
-static void gdbsim_fetch_register PARAMS ((int regno));
-
-static void gdbsim_store_register PARAMS ((int regno));
-
-static void gdbsim_kill PARAMS ((void));
-
-static void gdbsim_load PARAMS ((char *prog, int fromtty));
-
-static void gdbsim_create_inferior PARAMS ((char *exec_file, char *args, char **env));
-
-static void gdbsim_open PARAMS ((char *args, int from_tty));
-
-static void gdbsim_close PARAMS ((int quitting));
-
-static void gdbsim_detach PARAMS ((char *args, int from_tty));
-
-static void gdbsim_resume PARAMS ((int pid, int step, enum target_signal siggnal));
-
-static int gdbsim_wait PARAMS ((int pid, struct target_waitstatus *status));
-
-static void gdbsim_prepare_to_store PARAMS ((void));
-
-static int gdbsim_xfer_inferior_memory PARAMS ((CORE_ADDR memaddr,
-						char *myaddr, int len,
-						int write,
-						struct target_ops *target));
-
-static void gdbsim_files_info PARAMS ((struct target_ops *target));
-
-static void gdbsim_mourn_inferior PARAMS ((void));
-
-static void gdbsim_stop PARAMS ((void));
-
-void simulator_command PARAMS ((char *args, int from_tty));
-
-/* Naming convention:
-
-   sim_* are the interface to the simulator (see remote-sim.h).
-   gdbsim_* are stuff which is internal to gdb.  */
-
-/* Forward data declarations */
-extern struct target_ops gdbsim_ops;
-
-static int program_loaded = 0;
-
-/* We must keep track of whether the simulator has been opened or not because
-   GDB can call a target's close routine twice, but sim_close doesn't allow
-   this.  We also need to record the result of sim_open so we can pass it
-   back to the other sim_foo routines.  */
-static SIM_DESC gdbsim_desc = 0;
-
-static void
-dump_mem (buf, len)
-     char *buf;
-     int len;
-{
-  if (len <= 8)
-    {
-      if (len == 8 || len == 4)
-	{
-	  long l[2];
-	  memcpy (l, buf, len);
-	  printf_filtered ("\t0x%x", l[0]);
-	  printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
-	}
-      else
-	{
-	  int i;
-	  printf_filtered ("\t");
-	  for (i = 0; i < len; i++)
-	    printf_filtered ("0x%x ", buf[i]);
-	  printf_filtered ("\n");
-	}
-    }
-}
-
-static host_callback gdb_callback;
-static int callbacks_initialized = 0;
-
-/* Initialize gdb_callback.  */
-
-static void
-init_callbacks ()
-{
-  if (! callbacks_initialized)
-    {
-      gdb_callback = default_callback;
-      gdb_callback.init (&gdb_callback);
-      gdb_callback.write_stdout = gdb_os_write_stdout;
-      gdb_callback.flush_stdout = gdb_os_flush_stdout;
-      gdb_callback.write_stderr = gdb_os_write_stderr;
-      gdb_callback.flush_stderr = gdb_os_flush_stderr;
-      gdb_callback.printf_filtered = gdb_os_printf_filtered;
-      gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
-      gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
-      gdb_callback.error = gdb_os_error;
-      gdb_callback.poll_quit = gdb_os_poll_quit;
-      gdb_callback.magic = HOST_CALLBACK_MAGIC;
-      callbacks_initialized = 1;
-    }
-}
-
-/* Release callbacks (free resources used by them).  */
-
-static void
-end_callbacks ()
-{
-  if (callbacks_initialized)
-    {
-      gdb_callback.shutdown (&gdb_callback);
-      callbacks_initialized = 0;
-    }
-}
-
-/* GDB version of os_write_stdout callback.  */
-
-static int 
-gdb_os_write_stdout (p, buf, len)
-     host_callback *p;
-     const char *buf;
-     int len;
-{
-  int i;
-  char b[2];
-
-  for (i = 0; i < len; i++) 
-    {
-      b[0] = buf[i];
-      b[1] = 0;
-      if (target_output_hook)
-	target_output_hook (b);
-      else
-	fputs_filtered (b, gdb_stdout);
-    }
-  return len;
-}
-
-/* GDB version of os_flush_stdout callback.  */
-
-static void
-gdb_os_flush_stdout (p)
-     host_callback *p;
-{
-  gdb_flush (gdb_stdout);
-}
-
-/* GDB version of os_write_stderr callback.  */
-
-static int 
-gdb_os_write_stderr (p, buf, len)
-     host_callback *p;
-     const char *buf;
-     int len;
-{
-  int i;
-  char b[2];
-
-  for (i = 0; i < len; i++) 
-    {
-      b[0] = buf[i];
-      b[1] = 0;
-      if (target_output_hook)
-	target_output_hook (b);
-      else
-	fputs_filtered (b, gdb_stderr);
-    }
-  return len;
-}
-
-/* GDB version of os_flush_stderr callback.  */
-
-static void
-gdb_os_flush_stderr (p)
-     host_callback *p;
-{
-  gdb_flush (gdb_stderr);
-}
-
-/* GDB version of printf_filtered callback.  */
-
-/* VARARGS */
-static void
-#ifdef ANSI_PROTOTYPES
-gdb_os_printf_filtered (host_callback *p, const char *format, ...)
-#else
-gdb_os_printf_filtered (p, va_alist)
-     host_callback *p;
-     va_dcl
-#endif
-{
-  va_list args;
-#ifdef ANSI_PROTOTYPES
-  va_start (args, format);
-#else
-  char *format;
-
-  va_start (args);
-  format = va_arg (args, char *);
-#endif
-
-  vfprintf_filtered (gdb_stdout, format, args);
-
-  va_end (args);
-}
-
-/* GDB version of error vprintf_filtered.  */
-
-/* VARARGS */
-static void
-#ifdef ANSI_PROTOTYPES
-gdb_os_vprintf_filtered (host_callback *p, const char *format, va_list ap)
-#else
-gdb_os_vprintf_filtered (p, format, ap)
-     host_callback *p;
-     char *format;
-     va_list ap;
-#endif
-{
-  vfprintf_filtered (gdb_stdout, format, ap);
-}
-
-/* GDB version of error evprintf_filtered.  */
-
-/* VARARGS */
-static void
-#ifdef ANSI_PROTOTYPES
-gdb_os_evprintf_filtered (host_callback *p, const char *format, va_list ap)
-#else
-gdb_os_evprintf_filtered (p, format, ap)
-     host_callback *p;
-     char *format;
-     va_list ap;
-#endif
-{
-  vfprintf_filtered (gdb_stderr, format, ap);
-}
-
-/* GDB version of error callback.  */
-
-/* VARARGS */
-static void
-#ifdef ANSI_PROTOTYPES
-gdb_os_error (host_callback *p, const char *format, ...)
-#else
-gdb_os_error (p, va_alist)
-     host_callback *p;
-     va_dcl
-#endif
-{
-  if (error_hook)
-    (*error_hook) ();
-  else 
-    {
-      va_list args;
-#ifdef ANSI_PROTOTYPES
-      va_start (args, format);
-#else
-      char *format;
-
-      va_start (args);
-      format = va_arg (args, char *);
-#endif
-
-      error_begin ();
-      vfprintf_filtered (gdb_stderr, format, args);
-      fprintf_filtered (gdb_stderr, "\n");
-      va_end (args);
-      return_to_top_level (RETURN_ERROR);
-    }
-}
-
-static void
-gdbsim_fetch_register (regno)
-     int regno;
-{
-  static int warn_user = 1;
-  if (regno == -1) 
-    {
-      for (regno = 0; regno < NUM_REGS; regno++)
-	gdbsim_fetch_register (regno);
-    }
-  else if (REGISTER_NAME (regno) != NULL && *REGISTER_NAME (regno) != '\0')
-    {
-      char buf[MAX_REGISTER_RAW_SIZE];
-      int nr_bytes = sim_fetch_register (gdbsim_desc, regno, buf, REGISTER_RAW_SIZE (regno));
-      if (nr_bytes == 0)
-	/* register not applicable, supply zero's */
-	memset (buf, 0, MAX_REGISTER_RAW_SIZE);
-      else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
-	       && warn_user)
-	{
-	  printf_unfiltered ("Size of register %s (%d) incorrect (%d instead of %d))",
-			     REGISTER_NAME (regno), regno,
-			     nr_bytes, REGISTER_RAW_SIZE (regno));
-	  warn_user = 0;
-	}
-      supply_register (regno, buf);
-      if (sr_get_debug ())
-	{
-	  printf_filtered ("gdbsim_fetch_register: %d", regno);
-	  /* FIXME: We could print something more intelligible.  */
-	  dump_mem (buf, REGISTER_RAW_SIZE (regno));
-	}
-    }
-}
-
-
-static void
-gdbsim_store_register (regno)
-     int regno;
-{
-  if (regno  == -1) 
-    {
-      for (regno = 0; regno < NUM_REGS; regno++)
-	gdbsim_store_register (regno);
-    }
-  else if (REGISTER_NAME (regno) != NULL && *REGISTER_NAME (regno) != '\0')
-    {
-      char tmp[MAX_REGISTER_RAW_SIZE];
-      int nr_bytes;
-      read_register_gen (regno, tmp);
-      nr_bytes = sim_store_register (gdbsim_desc, regno, tmp, REGISTER_RAW_SIZE (regno));
-      if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
-	fatal ("Register size different to expected");
-      if (sr_get_debug ())
-	{
-	  printf_filtered ("gdbsim_store_register: %d", regno);
-	  /* FIXME: We could print something more intelligible.  */
-	  dump_mem (tmp, REGISTER_RAW_SIZE (regno));
-	}
-    }
-}
-
-/* Kill the running program.  This may involve closing any open files
-   and releasing other resources acquired by the simulated program.  */
-
-static void
-gdbsim_kill ()
-{
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_kill\n");
-
-  /* There is no need to `kill' running simulator - the simulator is
-     not running */
-  inferior_pid = 0;
-}
-
-/* Load an executable file into the target process.  This is expected to
-   not only bring new code into the target process, but also to update
-   GDB's symbol tables to match.  */
-
-static void
-gdbsim_load (prog, fromtty)
-     char *prog;
-     int fromtty;
-{
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
-
-  inferior_pid = 0;
-
-  /* FIXME: We will print two messages on error.
-     Need error to either not print anything if passed NULL or need
-     another routine that doesn't take any arguments.  */
-  if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
-    error ("unable to load program");
-
-  /* FIXME: If a load command should reset the targets registers then
-     a call to sim_create_inferior() should go here. */
-
-  program_loaded = 1;
-}
-
-
-/* Start an inferior process and set inferior_pid to its pid.
-   EXEC_FILE is the file to run.
-   ARGS is a string containing the arguments to the program.
-   ENV is the environment vector to pass.  Errors reported with error().
-   On VxWorks and various standalone systems, we ignore exec_file.  */
-/* This is called not only when we first attach, but also when the
-   user types "run" after having attached.  */
-
-static void
-gdbsim_create_inferior (exec_file, args, env)
-     char *exec_file;
-     char *args;
-     char **env;
-{
-  int len;
-  char *arg_buf,**argv;
-
-  if (exec_file == 0 || exec_bfd == 0)
-    warning ("No executable file specified.");
-  if (! program_loaded)
-    warning ("No program loaded.");
-
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
-		     (exec_file ? exec_file: "(NULL)"),
-		     args);
-
-  gdbsim_kill ();	 
-  remove_breakpoints ();
-  init_wait_for_inferior ();
-
-  if (exec_file != NULL)
-    {
-      len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10;
-      arg_buf = (char *) alloca (len);
-      arg_buf[0] = '\0';
-      strcat (arg_buf, exec_file);
-      strcat (arg_buf, " ");
-      strcat (arg_buf, args);
-      argv = buildargv (arg_buf);
-      make_cleanup ((make_cleanup_func) freeargv, argv);
-    }
-  else
-    argv = NULL;
-  sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
-
-  inferior_pid = 42;
-  insert_breakpoints (); /* Needed to get correct instruction in cache */
-
-  clear_proceed_status ();
-
-  /* NB: Entry point already set by sim_create_inferior. */
-  proceed ((CORE_ADDR)-1, TARGET_SIGNAL_DEFAULT, 0);
-}
-
-/* The open routine takes the rest of the parameters from the command,
-   and (if successful) pushes a new target onto the stack.
-   Targets should supply this routine, if only to provide an error message.  */
-/* Called when selecting the simulator. EG: (gdb) target sim name.  */
-
-static void
-gdbsim_open (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  int len;
-  char *arg_buf;
-  char **argv;
-
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
-
-  /* Remove current simulator if one exists.  Only do this if the simulator
-     has been opened because sim_close requires it.
-     This is important because the call to push_target below will cause
-     sim_close to be called if the simulator is already open, but push_target
-     is called after sim_open!  We can't move the call to push_target before
-     the call to sim_open because sim_open may invoke `error'.  */
-  if (gdbsim_desc != NULL)
-    unpush_target (&gdbsim_ops);
-
-  len = (7 + 1 /* gdbsim */
-	 + strlen (" -E little")
-	 + strlen (" --architecture=xxxxxxxxxx")
-	 + (args ? strlen (args) : 0)
-	 + 50) /* slack */;
-  arg_buf = (char *) alloca (len);
-  strcpy (arg_buf, "gdbsim"); /* 7 */
-  /* Specify the byte order for the target when it is both selectable
-     and explicitly specified by the user (not auto detected). */
-  if (TARGET_BYTE_ORDER_SELECTABLE_P
-      && !TARGET_BYTE_ORDER_AUTO)
-    {
-      switch (TARGET_BYTE_ORDER)
-	{
-	case BIG_ENDIAN:
-	  strcat (arg_buf, " -E big");
-	  break;
-	case LITTLE_ENDIAN:
-	  strcat (arg_buf, " -E little");
-	  break;
-	default:
-	  fatal ("Value of TARGET_BYTE_ORDER unknown");
-	}
-    }
-  /* Specify the architecture of the target when it has been
-     explicitly specified */
-  if (!TARGET_ARCHITECTURE_AUTO)
-    {
-      strcat (arg_buf, " --architecture=");
-      strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
-    }
-  /* finally, any explicit args */
-  if (args)
-    {
-      strcat (arg_buf, " "); /* 1 */
-      strcat (arg_buf, args);
-    }
-  argv = buildargv (arg_buf);
-  if (argv == NULL)
-    error ("Insufficient memory available to allocate simulator arg list.");
-  make_cleanup ((make_cleanup_func) freeargv, argv);
-
-  init_callbacks ();
-  gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
-
-  if (gdbsim_desc == 0)
-    error ("unable to create simulator instance");
-
-  push_target (&gdbsim_ops);
-  target_fetch_registers (-1);
-  printf_filtered ("Connected to the simulator.\n");
-}
-
-/* Does whatever cleanup is required for a target that we are no longer
-   going to be calling.  Argument says whether we are quitting gdb and
-   should not get hung in case of errors, or whether we want a clean
-   termination even if it takes a while.  This routine is automatically
-   always called just before a routine is popped off the target stack.
-   Closing file descriptors and freeing memory are typical things it should
-   do.  */
-/* Close out all files and local state before this target loses control. */
-
-static void
-gdbsim_close (quitting)
-     int quitting;
-{
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_close: quitting %d\n", quitting);
-
-  program_loaded = 0;
-
-  if (gdbsim_desc != NULL)
-    {
-      sim_close (gdbsim_desc, quitting);
-      gdbsim_desc = NULL;
-    }
-
-  end_callbacks ();
-}
-
-/* Takes a program previously attached to and detaches it.
-   The program may resume execution (some targets do, some don't) and will
-   no longer stop on signals, etc.  We better not have left any breakpoints
-   in the program or it'll die when it hits one.  ARGS is arguments
-   typed by the user (e.g. a signal to send the process).  FROM_TTY
-   says whether to be verbose or not.  */
-/* Terminate the open connection to the remote debugger.
-   Use this when you want to detach and do something else with your gdb.  */
-
-static void
-gdbsim_detach (args,from_tty)
-     char *args;
-     int from_tty;
-{
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
-
-  pop_target ();		/* calls gdbsim_close to do the real work */
-  if (from_tty)
-    printf_filtered ("Ending simulator %s debugging\n", target_shortname);
-}
- 
-/* Resume execution of the target process.  STEP says whether to single-step
-   or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
-   to the target, or zero for no signal.  */
-
-static enum target_signal resume_siggnal;
-static int resume_step;
-
-static void
-gdbsim_resume (pid, step, siggnal)
-     int pid, step;
-     enum target_signal siggnal;
-{
-  if (inferior_pid != 42)
-    error ("The program is not being run.");
-
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
-
-  resume_siggnal = siggnal;
-  resume_step = step;
-}
-
-/* Notify the simulator of an asynchronous request to stop.
-   
-   The simulator shall ensure that the stop request is eventually
-   delivered to the simulator.  If the call is made while the
-   simulator is not running then the stop request is processed when
-   the simulator is next resumed.
-
-   For simulators that do not support this operation, just abort */
-
-static void
-gdbsim_stop ()
-{
-  if (! sim_stop (gdbsim_desc))
-    {
-      quit ();
-    }
-}
-
-/* GDB version of os_poll_quit callback.
-   Taken from gdb/util.c - should be in a library */
-
-static int
-gdb_os_poll_quit (p)
-     host_callback *p;
-{
-  notice_quit ();
-  if (quit_flag) /* gdb's idea of quit */
-    {
-      quit_flag = 0; /* we've stolen it */
-      return 1;
-    }
-  else if (immediate_quit)
-    {
-      return 1;
-    }
-  return 0;
-}
-
-/* Wait for inferior process to do something.  Return pid of child,
-   or -1 in case of error; store status through argument pointer STATUS,
-   just as `wait' would. */
-
-static void
-gdbsim_cntrl_c (signo)
-     int signo;
-{
-  gdbsim_stop ();
-}
-
-static int
-gdbsim_wait (pid, status)
-     int pid;
-     struct target_waitstatus *status;
-{
-  static RETSIGTYPE (*prev_sigint) ();
-  int sigrc = 0;
-  enum sim_stop reason = sim_running;
-
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_wait\n");
-
-#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
-  {
-    struct sigaction sa, osa;
-    sa.sa_handler = gdbsim_cntrl_c;
-    sigemptyset (&sa.sa_mask);
-    sa.sa_flags = 0;
-    sigaction (SIGINT, &sa, &osa);
-    prev_sigint = osa.sa_handler;
-  }
-#else
-  prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
-#endif
-  sim_resume (gdbsim_desc, resume_step,
-	      target_signal_to_host (resume_siggnal));
-  signal (SIGINT, prev_sigint);
-  resume_step = 0;
-
-  sim_stop_reason (gdbsim_desc, &reason, &sigrc);
-
-  switch (reason)
-    {
-    case sim_exited:
-      status->kind = TARGET_WAITKIND_EXITED;
-      status->value.integer = sigrc;
-      break;
-    case sim_stopped:
-      switch (sigrc)
-	{
-	case SIGABRT:
-	  quit ();
-	  break;
-	case SIGINT:
-	case SIGTRAP:
-	default:
-	  status->kind = TARGET_WAITKIND_STOPPED;
-	  /* The signal in sigrc is a host signal.  That probably
-	     should be fixed.  */
-	  status->value.sig = target_signal_from_host (sigrc);
-	  break;
-	}
-      break;
-    case sim_signalled:
-      status->kind = TARGET_WAITKIND_SIGNALLED;
-      /* The signal in sigrc is a host signal.  That probably
-	 should be fixed.  */
-      status->value.sig = target_signal_from_host (sigrc);
-      break;
-    case sim_running:
-    case sim_polling:
-      /* FIXME: Is this correct? */
-      break;
-    }
-
-  return inferior_pid;
-}
-
-/* Get ready to modify the registers array.  On machines which store
-   individual registers, this doesn't need to do anything.  On machines
-   which store all the registers in one fell swoop, this makes sure
-   that registers contains all the registers from the program being
-   debugged.  */
-
-static void
-gdbsim_prepare_to_store ()
-{
-  /* Do nothing, since we can store individual regs */
-}
-
-static int
-gdbsim_xfer_inferior_memory (memaddr, myaddr, len, write, target)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int write;
-     struct target_ops *target;			/* ignored */
-{
-  if (! program_loaded)
-    error ("No program loaded.");
-
-  if (sr_get_debug ())
-    {
-      printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
-		       myaddr, memaddr, len, write);
-      if (sr_get_debug () && write)
-	dump_mem(myaddr, len);
-    }
-
-  if (write)
-    {
-      len = sim_write (gdbsim_desc, memaddr, myaddr, len);
-    }
-  else 
-    {
-      len = sim_read (gdbsim_desc, memaddr, myaddr, len);
-      if (sr_get_debug () && len > 0)
-	dump_mem(myaddr, len);
-    } 
-  return len;
-}
-
-static void
-gdbsim_files_info (target)
-     struct target_ops *target;
-{
-  char *file = "nothing";
-
-  if (exec_bfd)
-    file = bfd_get_filename (exec_bfd);
-
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
-
-  if (exec_bfd)
-    {
-      printf_filtered ("\tAttached to %s running program %s\n",
-		       target_shortname, file);
-      sim_info (gdbsim_desc, 0);
-    }
-}
-
-/* Clear the simulator's notion of what the break points are.  */
-
-static void
-gdbsim_mourn_inferior () 
-{ 
-  if (sr_get_debug ())
-    printf_filtered ("gdbsim_mourn_inferior:\n");
-
-  remove_breakpoints ();
-  generic_mourn_inferior ();
-}
-
-static int
-gdbsim_insert_breakpoint (addr, contents_cache)
-     CORE_ADDR addr;
-     char *contents_cache;
-{
-#ifdef SIM_HAS_BREAKPOINTS
-  SIM_RC retcode;
-
-  retcode = sim_set_breakpoint (gdbsim_desc, addr);
-
-  switch (retcode)
-    {
-    case SIM_RC_OK:
-      return 0;
-    case SIM_RC_INSUFFICIENT_RESOURCES:
-      return ENOMEM;
-    default:
-      return EIO;
-    }
-#else
-  return memory_insert_breakpoint (addr, contents_cache);
-#endif
-}
-
-static int
-gdbsim_remove_breakpoint (addr, contents_cache)
-     CORE_ADDR addr;
-     char *contents_cache;
-{
-#ifdef SIM_HAS_BREAKPOINTS
-  SIM_RC retcode;
-
-  retcode = sim_clear_breakpoint (gdbsim_desc, addr);
-
-  switch (retcode)
-    {
-    case SIM_RC_OK:
-    case SIM_RC_UNKNOWN_BREAKPOINT:
-      return 0;
-    case SIM_RC_INSUFFICIENT_RESOURCES:
-      return ENOMEM;
-    default:
-      return EIO;
-    }
-#else
-  return memory_remove_breakpoint (addr, contents_cache);
-#endif
-}
-
-/* Pass the command argument through to the simulator verbatim.  The
-   simulator must do any command interpretation work.  */
-
-void
-simulator_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  if (gdbsim_desc == NULL)
-    {
-
-      /* PREVIOUSLY: The user may give a command before the simulator
-         is opened. [...] (??? assuming of course one wishes to
-         continue to allow commands to be sent to unopened simulators,
-         which isn't entirely unreasonable). */
-
-      /* The simulator is a builtin abstraction of a remote target.
-         Consistent with that model, access to the simulator, via sim
-         commands, is restricted to the period when the channel to the
-         simulator is open. */
-
-      error ("Not connected to the simulator target");
-    }
-
-  sim_do_command (gdbsim_desc, args);
-
-  /* Invalidate the register cache, in case the simulator command does
-     something funny. */
-  registers_changed (); 
-}
-
-/* Define the target subroutine names */
-
-struct target_ops gdbsim_ops ;
-
-static void 
-init_gdbsim_ops(void)
-{
-  gdbsim_ops.to_shortname =   "sim";		
-  gdbsim_ops.to_longname =   "simulator";		
-  gdbsim_ops.to_doc =   "Use the compiled-in simulator.";  
-  gdbsim_ops.to_open =   gdbsim_open;		
-  gdbsim_ops.to_close =   gdbsim_close;		
-  gdbsim_ops.to_attach =   NULL;
-  gdbsim_ops.to_post_attach = NULL;  
-  gdbsim_ops.to_require_attach = NULL;	
-  gdbsim_ops.to_detach =   gdbsim_detach;
-  gdbsim_ops.to_require_detach = NULL;	
-  gdbsim_ops.to_resume =   gdbsim_resume;	
-  gdbsim_ops.to_wait  =   gdbsim_wait;
-  gdbsim_ops.to_post_wait = NULL;		
-  gdbsim_ops.to_fetch_registers  =   gdbsim_fetch_register;
-  gdbsim_ops.to_store_registers  =   gdbsim_store_register;
-  gdbsim_ops.to_prepare_to_store =   gdbsim_prepare_to_store;
-  gdbsim_ops.to_xfer_memory  =   gdbsim_xfer_inferior_memory;
-  gdbsim_ops.to_files_info  =   gdbsim_files_info;	
-  gdbsim_ops.to_insert_breakpoint =   gdbsim_insert_breakpoint;
-  gdbsim_ops.to_remove_breakpoint =   gdbsim_remove_breakpoint;
-  gdbsim_ops.to_terminal_init  =   NULL;		
-  gdbsim_ops.to_terminal_inferior =   NULL;		
-  gdbsim_ops.to_terminal_ours_for_output =   NULL;
-  gdbsim_ops.to_terminal_ours  =   NULL;
-  gdbsim_ops.to_terminal_info  =   NULL;
-  gdbsim_ops.to_kill  =   gdbsim_kill;	
-  gdbsim_ops.to_load  =   gdbsim_load;	
-  gdbsim_ops.to_lookup_symbol =   NULL;	
-  gdbsim_ops.to_create_inferior =   gdbsim_create_inferior;
-  gdbsim_ops.to_post_startup_inferior = NULL;
-  gdbsim_ops.to_acknowledge_created_inferior = NULL;
-  gdbsim_ops.to_clone_and_follow_inferior = NULL;
-  gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
-  gdbsim_ops.to_insert_fork_catchpoint = NULL;
-  gdbsim_ops.to_remove_fork_catchpoint = NULL;
-  gdbsim_ops.to_insert_vfork_catchpoint = NULL;
-  gdbsim_ops.to_remove_vfork_catchpoint = NULL;
-  gdbsim_ops.to_has_forked = NULL;
-  gdbsim_ops.to_has_vforked = NULL;
-  gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
-  gdbsim_ops.to_post_follow_vfork = NULL;
-  gdbsim_ops.to_insert_exec_catchpoint = NULL;
-  gdbsim_ops.to_remove_exec_catchpoint = NULL;
-  gdbsim_ops.to_has_execd = NULL;
-  gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
-  gdbsim_ops.to_has_exited = NULL;
-  gdbsim_ops.to_mourn_inferior =   gdbsim_mourn_inferior;
-  gdbsim_ops.to_can_run  =   0;			
-  gdbsim_ops.to_notice_signals =   0;		
-  gdbsim_ops.to_thread_alive  =   0;		
-  gdbsim_ops.to_stop  =   gdbsim_stop;
-  gdbsim_ops.to_pid_to_exec_file = NULL;	
-  gdbsim_ops.to_core_file_to_sym_file = NULL;	
-  gdbsim_ops.to_stratum =   process_stratum;	
-  gdbsim_ops.DONT_USE =   NULL;		
-  gdbsim_ops.to_has_all_memory =   1;	
-  gdbsim_ops.to_has_memory =   1;	
-  gdbsim_ops.to_has_stack =   1;	
-  gdbsim_ops.to_has_registers =   1;	
-  gdbsim_ops.to_has_execution =   1;	
-  gdbsim_ops.to_sections =   NULL;	
-  gdbsim_ops.to_sections_end =   NULL;	
-  gdbsim_ops.to_magic =   OPS_MAGIC;	
-
-#ifdef TARGET_REDEFINE_DEFAULT_OPS
-  TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
-#endif
-}
-
-void
-_initialize_remote_sim ()
-{
-  init_gdbsim_ops() ;
-  add_target (&gdbsim_ops);
-
-  add_com ("sim <command>", class_obscure, simulator_command,
-	   "Send a command to the simulator."); 
-}