1 /* Generic remote debugging interface for simulators.
2 Copyright 1993, 1994, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 Steve Chamberlain (sac@cygnus.com).
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
26 #include "gdb_string.h"
36 #include "remote-sim.h"
37 #include "remote-utils.h"
43 extern void _initialize_remote_sim (void);
45 extern int (*ui_loop_hook) (int signo);
47 static void dump_mem (char *buf, int len);
49 static void init_callbacks (void);
51 static void end_callbacks (void);
53 static int gdb_os_write_stdout (host_callback *, const char *, int);
55 static void gdb_os_flush_stdout (host_callback *);
57 static int gdb_os_write_stderr (host_callback *, const char *, int);
59 static void gdb_os_flush_stderr (host_callback *);
61 static int gdb_os_poll_quit (host_callback *);
63 /* printf_filtered is depreciated */
64 static void gdb_os_printf_filtered (host_callback *, const char *, ...);
66 static void gdb_os_vprintf_filtered (host_callback *, const char *, va_list);
68 static void gdb_os_evprintf_filtered (host_callback *, const char *, va_list);
70 static void gdb_os_error (host_callback *, const char *, ...);
72 static void gdbsim_fetch_register (int regno);
74 static void gdbsim_store_register (int regno);
76 static void gdbsim_kill (void);
78 static void gdbsim_load (char *prog, int fromtty);
80 static void gdbsim_create_inferior (char *exec_file, char *args, char **env);
82 static void gdbsim_open (char *args, int from_tty);
84 static void gdbsim_close (int quitting);
86 static void gdbsim_detach (char *args, int from_tty);
88 static void gdbsim_resume (int pid, int step, enum target_signal siggnal);
90 static int gdbsim_wait (int pid, struct target_waitstatus *status);
92 static void gdbsim_prepare_to_store (void);
94 static int gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr,
96 struct mem_attrib *attrib,
97 struct target_ops *target);
99 static void gdbsim_files_info (struct target_ops *target);
101 static void gdbsim_mourn_inferior (void);
103 static void gdbsim_stop (void);
105 void simulator_command (char *args, int from_tty);
107 /* Naming convention:
109 sim_* are the interface to the simulator (see remote-sim.h).
110 gdbsim_* are stuff which is internal to gdb. */
112 /* Forward data declarations */
113 extern struct target_ops gdbsim_ops;
115 static int program_loaded = 0;
117 /* We must keep track of whether the simulator has been opened or not because
118 GDB can call a target's close routine twice, but sim_close doesn't allow
119 this. We also need to record the result of sim_open so we can pass it
120 back to the other sim_foo routines. */
121 static SIM_DESC gdbsim_desc = 0;
124 dump_mem (char *buf, int len)
128 if (len == 8 || len == 4)
131 memcpy (l, buf, len);
132 printf_filtered ("\t0x%lx", l[0]);
134 printf_filtered (" 0x%lx", l[1]);
135 printf_filtered ("\n");
140 printf_filtered ("\t");
141 for (i = 0; i < len; i++)
142 printf_filtered ("0x%x ", buf[i]);
143 printf_filtered ("\n");
148 static host_callback gdb_callback;
149 static int callbacks_initialized = 0;
151 /* Initialize gdb_callback. */
154 init_callbacks (void)
156 if (!callbacks_initialized)
158 gdb_callback = default_callback;
159 gdb_callback.init (&gdb_callback);
160 gdb_callback.write_stdout = gdb_os_write_stdout;
161 gdb_callback.flush_stdout = gdb_os_flush_stdout;
162 gdb_callback.write_stderr = gdb_os_write_stderr;
163 gdb_callback.flush_stderr = gdb_os_flush_stderr;
164 gdb_callback.printf_filtered = gdb_os_printf_filtered;
165 gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
166 gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
167 gdb_callback.error = gdb_os_error;
168 gdb_callback.poll_quit = gdb_os_poll_quit;
169 gdb_callback.magic = HOST_CALLBACK_MAGIC;
170 callbacks_initialized = 1;
174 /* Release callbacks (free resources used by them). */
179 if (callbacks_initialized)
181 gdb_callback.shutdown (&gdb_callback);
182 callbacks_initialized = 0;
186 /* GDB version of os_write_stdout callback. */
189 gdb_os_write_stdout (host_callback *p, const char *buf, int len)
194 ui_file_write (gdb_stdtarg, buf, len);
198 /* GDB version of os_flush_stdout callback. */
201 gdb_os_flush_stdout (host_callback *p)
203 gdb_flush (gdb_stdtarg);
206 /* GDB version of os_write_stderr callback. */
209 gdb_os_write_stderr (host_callback *p, const char *buf, int len)
214 for (i = 0; i < len; i++)
218 fputs_unfiltered (b, gdb_stdtarg);
223 /* GDB version of os_flush_stderr callback. */
226 gdb_os_flush_stderr (host_callback *p)
228 gdb_flush (gdb_stderr);
231 /* GDB version of printf_filtered callback. */
234 gdb_os_printf_filtered (host_callback * p, const char *format,...)
237 va_start (args, format);
239 vfprintf_filtered (gdb_stdout, format, args);
244 /* GDB version of error vprintf_filtered. */
247 gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
249 vfprintf_filtered (gdb_stdout, format, ap);
252 /* GDB version of error evprintf_filtered. */
255 gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
257 vfprintf_filtered (gdb_stderr, format, ap);
260 /* GDB version of error callback. */
263 gdb_os_error (host_callback * p, const char *format,...)
270 va_start (args, format);
271 verror (format, args);
277 gdbsim_fetch_register (int regno)
279 static int warn_user = 1;
282 for (regno = 0; regno < NUM_REGS; regno++)
283 gdbsim_fetch_register (regno);
285 else if (REGISTER_NAME (regno) != NULL
286 && *REGISTER_NAME (regno) != '\0')
288 char buf[MAX_REGISTER_RAW_SIZE];
290 if (REGISTER_SIM_REGNO (regno) >= 0)
291 nr_bytes = sim_fetch_register (gdbsim_desc,
292 REGISTER_SIM_REGNO (regno),
293 buf, REGISTER_RAW_SIZE (regno));
297 /* register not applicable, supply zero's */
298 memset (buf, 0, MAX_REGISTER_RAW_SIZE);
299 else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
302 fprintf_unfiltered (gdb_stderr,
303 "Size of register %s (%d/%d) incorrect (%d instead of %d))",
304 REGISTER_NAME (regno),
305 regno, REGISTER_SIM_REGNO (regno),
306 nr_bytes, REGISTER_RAW_SIZE (regno));
309 supply_register (regno, buf);
312 printf_filtered ("gdbsim_fetch_register: %d", regno);
313 /* FIXME: We could print something more intelligible. */
314 dump_mem (buf, REGISTER_RAW_SIZE (regno));
321 gdbsim_store_register (int regno)
325 for (regno = 0; regno < NUM_REGS; regno++)
326 gdbsim_store_register (regno);
328 else if (REGISTER_NAME (regno) != NULL
329 && *REGISTER_NAME (regno) != '\0'
330 && REGISTER_SIM_REGNO (regno) >= 0)
332 char tmp[MAX_REGISTER_RAW_SIZE];
334 read_register_gen (regno, tmp);
335 nr_bytes = sim_store_register (gdbsim_desc,
336 REGISTER_SIM_REGNO (regno),
337 tmp, REGISTER_RAW_SIZE (regno));
338 if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
339 internal_error (__FILE__, __LINE__,
340 "Register size different to expected");
343 printf_filtered ("gdbsim_store_register: %d", regno);
344 /* FIXME: We could print something more intelligible. */
345 dump_mem (tmp, REGISTER_RAW_SIZE (regno));
350 /* Kill the running program. This may involve closing any open files
351 and releasing other resources acquired by the simulated program. */
357 printf_filtered ("gdbsim_kill\n");
359 /* There is no need to `kill' running simulator - the simulator is
364 /* Load an executable file into the target process. This is expected to
365 not only bring new code into the target process, but also to update
366 GDB's symbol tables to match. */
369 gdbsim_load (char *prog, int fromtty)
372 printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
376 /* FIXME: We will print two messages on error.
377 Need error to either not print anything if passed NULL or need
378 another routine that doesn't take any arguments. */
379 if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
380 error ("unable to load program");
382 /* FIXME: If a load command should reset the targets registers then
383 a call to sim_create_inferior() should go here. */
389 /* Start an inferior process and set inferior_pid to its pid.
390 EXEC_FILE is the file to run.
391 ARGS is a string containing the arguments to the program.
392 ENV is the environment vector to pass. Errors reported with error().
393 On VxWorks and various standalone systems, we ignore exec_file. */
394 /* This is called not only when we first attach, but also when the
395 user types "run" after having attached. */
398 gdbsim_create_inferior (char *exec_file, char *args, char **env)
401 char *arg_buf, **argv;
403 if (exec_file == 0 || exec_bfd == 0)
404 warning ("No executable file specified.");
406 warning ("No program loaded.");
409 printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
410 (exec_file ? exec_file : "(NULL)"),
414 remove_breakpoints ();
415 init_wait_for_inferior ();
417 if (exec_file != NULL)
419 len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
420 arg_buf = (char *) alloca (len);
422 strcat (arg_buf, exec_file);
423 strcat (arg_buf, " ");
424 strcat (arg_buf, args);
425 argv = buildargv (arg_buf);
426 make_cleanup_freeargv (argv);
430 sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
433 insert_breakpoints (); /* Needed to get correct instruction in cache */
435 clear_proceed_status ();
437 /* NB: Entry point already set by sim_create_inferior. */
438 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
441 /* The open routine takes the rest of the parameters from the command,
442 and (if successful) pushes a new target onto the stack.
443 Targets should supply this routine, if only to provide an error message. */
444 /* Called when selecting the simulator. EG: (gdb) target sim name. */
447 gdbsim_open (char *args, int from_tty)
454 printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
456 /* Remove current simulator if one exists. Only do this if the simulator
457 has been opened because sim_close requires it.
458 This is important because the call to push_target below will cause
459 sim_close to be called if the simulator is already open, but push_target
460 is called after sim_open! We can't move the call to push_target before
461 the call to sim_open because sim_open may invoke `error'. */
462 if (gdbsim_desc != NULL)
463 unpush_target (&gdbsim_ops);
465 len = (7 + 1 /* gdbsim */
466 + strlen (" -E little")
467 + strlen (" --architecture=xxxxxxxxxx")
468 + (args ? strlen (args) : 0)
470 arg_buf = (char *) alloca (len);
471 strcpy (arg_buf, "gdbsim"); /* 7 */
472 /* Specify the byte order for the target when it is both selectable
473 and explicitly specified by the user (not auto detected). */
474 if (TARGET_BYTE_ORDER_SELECTABLE_P
475 && !TARGET_BYTE_ORDER_AUTO)
477 switch (TARGET_BYTE_ORDER)
480 strcat (arg_buf, " -E big");
483 strcat (arg_buf, " -E little");
486 internal_error (__FILE__, __LINE__,
487 "Value of TARGET_BYTE_ORDER unknown");
490 /* Specify the architecture of the target when it has been
491 explicitly specified */
492 if (!TARGET_ARCHITECTURE_AUTO)
494 strcat (arg_buf, " --architecture=");
495 strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
497 /* finally, any explicit args */
500 strcat (arg_buf, " "); /* 1 */
501 strcat (arg_buf, args);
503 argv = buildargv (arg_buf);
505 error ("Insufficient memory available to allocate simulator arg list.");
506 make_cleanup_freeargv (argv);
509 gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
511 if (gdbsim_desc == 0)
512 error ("unable to create simulator instance");
514 push_target (&gdbsim_ops);
515 target_fetch_registers (-1);
516 printf_filtered ("Connected to the simulator.\n");
519 /* Does whatever cleanup is required for a target that we are no longer
520 going to be calling. Argument says whether we are quitting gdb and
521 should not get hung in case of errors, or whether we want a clean
522 termination even if it takes a while. This routine is automatically
523 always called just before a routine is popped off the target stack.
524 Closing file descriptors and freeing memory are typical things it should
526 /* Close out all files and local state before this target loses control. */
529 gdbsim_close (int quitting)
532 printf_filtered ("gdbsim_close: quitting %d\n", quitting);
536 if (gdbsim_desc != NULL)
538 sim_close (gdbsim_desc, quitting);
543 generic_mourn_inferior ();
546 /* Takes a program previously attached to and detaches it.
547 The program may resume execution (some targets do, some don't) and will
548 no longer stop on signals, etc. We better not have left any breakpoints
549 in the program or it'll die when it hits one. ARGS is arguments
550 typed by the user (e.g. a signal to send the process). FROM_TTY
551 says whether to be verbose or not. */
552 /* Terminate the open connection to the remote debugger.
553 Use this when you want to detach and do something else with your gdb. */
556 gdbsim_detach (char *args, int from_tty)
559 printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
561 pop_target (); /* calls gdbsim_close to do the real work */
563 printf_filtered ("Ending simulator %s debugging\n", target_shortname);
566 /* Resume execution of the target process. STEP says whether to single-step
567 or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
568 to the target, or zero for no signal. */
570 static enum target_signal resume_siggnal;
571 static int resume_step;
574 gdbsim_resume (int pid, int step, enum target_signal siggnal)
576 if (inferior_pid != 42)
577 error ("The program is not being run.");
580 printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
582 resume_siggnal = siggnal;
586 /* Notify the simulator of an asynchronous request to stop.
588 The simulator shall ensure that the stop request is eventually
589 delivered to the simulator. If the call is made while the
590 simulator is not running then the stop request is processed when
591 the simulator is next resumed.
593 For simulators that do not support this operation, just abort */
598 if (!sim_stop (gdbsim_desc))
604 /* GDB version of os_poll_quit callback.
605 Taken from gdb/util.c - should be in a library */
608 gdb_os_poll_quit (host_callback *p)
610 if (ui_loop_hook != NULL)
614 if (quit_flag) /* gdb's idea of quit */
616 quit_flag = 0; /* we've stolen it */
619 else if (immediate_quit)
626 /* Wait for inferior process to do something. Return pid of child,
627 or -1 in case of error; store status through argument pointer STATUS,
628 just as `wait' would. */
631 gdbsim_cntrl_c (int signo)
637 gdbsim_wait (int pid, struct target_waitstatus *status)
639 static RETSIGTYPE (*prev_sigint) ();
641 enum sim_stop reason = sim_running;
644 printf_filtered ("gdbsim_wait\n");
646 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
648 struct sigaction sa, osa;
649 sa.sa_handler = gdbsim_cntrl_c;
650 sigemptyset (&sa.sa_mask);
652 sigaction (SIGINT, &sa, &osa);
653 prev_sigint = osa.sa_handler;
656 prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
658 sim_resume (gdbsim_desc, resume_step,
659 target_signal_to_host (resume_siggnal));
660 signal (SIGINT, prev_sigint);
663 sim_stop_reason (gdbsim_desc, &reason, &sigrc);
668 status->kind = TARGET_WAITKIND_EXITED;
669 status->value.integer = sigrc;
680 status->kind = TARGET_WAITKIND_STOPPED;
681 /* The signal in sigrc is a host signal. That probably
683 status->value.sig = target_signal_from_host (sigrc);
688 status->kind = TARGET_WAITKIND_SIGNALLED;
689 /* The signal in sigrc is a host signal. That probably
691 status->value.sig = target_signal_from_host (sigrc);
695 /* FIXME: Is this correct? */
702 /* Get ready to modify the registers array. On machines which store
703 individual registers, this doesn't need to do anything. On machines
704 which store all the registers in one fell swoop, this makes sure
705 that registers contains all the registers from the program being
709 gdbsim_prepare_to_store (void)
711 /* Do nothing, since we can store individual regs */
714 /* Transfer LEN bytes between GDB address MYADDR and target address
715 MEMADDR. If WRITE is non-zero, transfer them to the target,
716 otherwise transfer them from the target. TARGET is unused.
718 Returns the number of bytes transferred. */
721 gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len,
723 struct mem_attrib *attrib ATTRIBUTE_UNUSED,
724 struct target_ops *target ATTRIBUTE_UNUSED)
727 error ("No program loaded.");
731 /* FIXME: Send to something other than STDOUT? */
732 printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x");
733 gdb_print_host_address (myaddr, gdb_stdout);
734 printf_filtered (", memaddr 0x%s, len %d, write %d\n",
735 paddr_nz (memaddr), len, write);
736 if (sr_get_debug () && write)
737 dump_mem (myaddr, len);
742 len = sim_write (gdbsim_desc, memaddr, myaddr, len);
746 len = sim_read (gdbsim_desc, memaddr, myaddr, len);
747 if (sr_get_debug () && len > 0)
748 dump_mem (myaddr, len);
754 gdbsim_files_info (struct target_ops *target)
756 char *file = "nothing";
759 file = bfd_get_filename (exec_bfd);
762 printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
766 printf_filtered ("\tAttached to %s running program %s\n",
767 target_shortname, file);
768 sim_info (gdbsim_desc, 0);
772 /* Clear the simulator's notion of what the break points are. */
775 gdbsim_mourn_inferior (void)
778 printf_filtered ("gdbsim_mourn_inferior:\n");
780 remove_breakpoints ();
781 generic_mourn_inferior ();
785 gdbsim_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
787 #ifdef SIM_HAS_BREAKPOINTS
790 retcode = sim_set_breakpoint (gdbsim_desc, addr);
796 case SIM_RC_INSUFFICIENT_RESOURCES:
802 return memory_insert_breakpoint (addr, contents_cache);
807 gdbsim_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
809 #ifdef SIM_HAS_BREAKPOINTS
812 retcode = sim_clear_breakpoint (gdbsim_desc, addr);
817 case SIM_RC_UNKNOWN_BREAKPOINT:
819 case SIM_RC_INSUFFICIENT_RESOURCES:
825 return memory_remove_breakpoint (addr, contents_cache);
829 /* Pass the command argument through to the simulator verbatim. The
830 simulator must do any command interpretation work. */
833 simulator_command (char *args, int from_tty)
835 if (gdbsim_desc == NULL)
838 /* PREVIOUSLY: The user may give a command before the simulator
839 is opened. [...] (??? assuming of course one wishes to
840 continue to allow commands to be sent to unopened simulators,
841 which isn't entirely unreasonable). */
843 /* The simulator is a builtin abstraction of a remote target.
844 Consistent with that model, access to the simulator, via sim
845 commands, is restricted to the period when the channel to the
846 simulator is open. */
848 error ("Not connected to the simulator target");
851 sim_do_command (gdbsim_desc, args);
853 /* Invalidate the register cache, in case the simulator command does
855 registers_changed ();
858 /* Define the target subroutine names */
860 struct target_ops gdbsim_ops;
863 init_gdbsim_ops (void)
865 gdbsim_ops.to_shortname = "sim";
866 gdbsim_ops.to_longname = "simulator";
867 gdbsim_ops.to_doc = "Use the compiled-in simulator.";
868 gdbsim_ops.to_open = gdbsim_open;
869 gdbsim_ops.to_close = gdbsim_close;
870 gdbsim_ops.to_attach = NULL;
871 gdbsim_ops.to_post_attach = NULL;
872 gdbsim_ops.to_require_attach = NULL;
873 gdbsim_ops.to_detach = gdbsim_detach;
874 gdbsim_ops.to_require_detach = NULL;
875 gdbsim_ops.to_resume = gdbsim_resume;
876 gdbsim_ops.to_wait = gdbsim_wait;
877 gdbsim_ops.to_post_wait = NULL;
878 gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
879 gdbsim_ops.to_store_registers = gdbsim_store_register;
880 gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
881 gdbsim_ops.to_xfer_memory = gdbsim_xfer_inferior_memory;
882 gdbsim_ops.to_files_info = gdbsim_files_info;
883 gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
884 gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
885 gdbsim_ops.to_terminal_init = NULL;
886 gdbsim_ops.to_terminal_inferior = NULL;
887 gdbsim_ops.to_terminal_ours_for_output = NULL;
888 gdbsim_ops.to_terminal_ours = NULL;
889 gdbsim_ops.to_terminal_info = NULL;
890 gdbsim_ops.to_kill = gdbsim_kill;
891 gdbsim_ops.to_load = gdbsim_load;
892 gdbsim_ops.to_lookup_symbol = NULL;
893 gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
894 gdbsim_ops.to_post_startup_inferior = NULL;
895 gdbsim_ops.to_acknowledge_created_inferior = NULL;
896 gdbsim_ops.to_clone_and_follow_inferior = NULL;
897 gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
898 gdbsim_ops.to_insert_fork_catchpoint = NULL;
899 gdbsim_ops.to_remove_fork_catchpoint = NULL;
900 gdbsim_ops.to_insert_vfork_catchpoint = NULL;
901 gdbsim_ops.to_remove_vfork_catchpoint = NULL;
902 gdbsim_ops.to_has_forked = NULL;
903 gdbsim_ops.to_has_vforked = NULL;
904 gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
905 gdbsim_ops.to_post_follow_vfork = NULL;
906 gdbsim_ops.to_insert_exec_catchpoint = NULL;
907 gdbsim_ops.to_remove_exec_catchpoint = NULL;
908 gdbsim_ops.to_has_execd = NULL;
909 gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
910 gdbsim_ops.to_has_exited = NULL;
911 gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
912 gdbsim_ops.to_can_run = 0;
913 gdbsim_ops.to_notice_signals = 0;
914 gdbsim_ops.to_thread_alive = 0;
915 gdbsim_ops.to_stop = gdbsim_stop;
916 gdbsim_ops.to_pid_to_exec_file = NULL;
917 gdbsim_ops.to_core_file_to_sym_file = NULL;
918 gdbsim_ops.to_stratum = process_stratum;
919 gdbsim_ops.DONT_USE = NULL;
920 gdbsim_ops.to_has_all_memory = 1;
921 gdbsim_ops.to_has_memory = 1;
922 gdbsim_ops.to_has_stack = 1;
923 gdbsim_ops.to_has_registers = 1;
924 gdbsim_ops.to_has_execution = 1;
925 gdbsim_ops.to_sections = NULL;
926 gdbsim_ops.to_sections_end = NULL;
927 gdbsim_ops.to_magic = OPS_MAGIC;
929 #ifdef TARGET_REDEFINE_DEFAULT_OPS
930 TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
935 _initialize_remote_sim (void)
938 add_target (&gdbsim_ops);
940 add_com ("sim <command>", class_obscure, simulator_command,
941 "Send a command to the simulator.");