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"
42 extern void _initialize_remote_sim (void);
44 extern int (*ui_loop_hook) (int signo);
46 static void dump_mem (char *buf, int len);
48 static void init_callbacks (void);
50 static void end_callbacks (void);
52 static int gdb_os_write_stdout (host_callback *, const char *, int);
54 static void gdb_os_flush_stdout (host_callback *);
56 static int gdb_os_write_stderr (host_callback *, const char *, int);
58 static void gdb_os_flush_stderr (host_callback *);
60 static int gdb_os_poll_quit (host_callback *);
62 /* printf_filtered is depreciated */
63 static void gdb_os_printf_filtered (host_callback *, const char *, ...);
65 static void gdb_os_vprintf_filtered (host_callback *, const char *, va_list);
67 static void gdb_os_evprintf_filtered (host_callback *, const char *, va_list);
69 static void gdb_os_error (host_callback *, const char *, ...);
71 static void gdbsim_fetch_register (int regno);
73 static void gdbsim_store_register (int regno);
75 static void gdbsim_kill (void);
77 static void gdbsim_load (char *prog, int fromtty);
79 static void gdbsim_create_inferior (char *exec_file, char *args, char **env);
81 static void gdbsim_open (char *args, int from_tty);
83 static void gdbsim_close (int quitting);
85 static void gdbsim_detach (char *args, int from_tty);
87 static void gdbsim_resume (int pid, int step, enum target_signal siggnal);
89 static int gdbsim_wait (int pid, struct target_waitstatus *status);
91 static void gdbsim_prepare_to_store (void);
93 static int gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr,
95 struct mem_attrib *attrib,
96 struct target_ops *target);
98 static void gdbsim_files_info (struct target_ops *target);
100 static void gdbsim_mourn_inferior (void);
102 static void gdbsim_stop (void);
104 void simulator_command (char *args, int from_tty);
106 /* Naming convention:
108 sim_* are the interface to the simulator (see remote-sim.h).
109 gdbsim_* are stuff which is internal to gdb. */
111 /* Forward data declarations */
112 extern struct target_ops gdbsim_ops;
114 static int program_loaded = 0;
116 /* We must keep track of whether the simulator has been opened or not because
117 GDB can call a target's close routine twice, but sim_close doesn't allow
118 this. We also need to record the result of sim_open so we can pass it
119 back to the other sim_foo routines. */
120 static SIM_DESC gdbsim_desc = 0;
123 dump_mem (char *buf, int len)
127 if (len == 8 || len == 4)
130 memcpy (l, buf, len);
131 printf_filtered ("\t0x%lx", l[0]);
133 printf_filtered (" 0x%lx", l[1]);
134 printf_filtered ("\n");
139 printf_filtered ("\t");
140 for (i = 0; i < len; i++)
141 printf_filtered ("0x%x ", buf[i]);
142 printf_filtered ("\n");
147 static host_callback gdb_callback;
148 static int callbacks_initialized = 0;
150 /* Initialize gdb_callback. */
153 init_callbacks (void)
155 if (!callbacks_initialized)
157 gdb_callback = default_callback;
158 gdb_callback.init (&gdb_callback);
159 gdb_callback.write_stdout = gdb_os_write_stdout;
160 gdb_callback.flush_stdout = gdb_os_flush_stdout;
161 gdb_callback.write_stderr = gdb_os_write_stderr;
162 gdb_callback.flush_stderr = gdb_os_flush_stderr;
163 gdb_callback.printf_filtered = gdb_os_printf_filtered;
164 gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
165 gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
166 gdb_callback.error = gdb_os_error;
167 gdb_callback.poll_quit = gdb_os_poll_quit;
168 gdb_callback.magic = HOST_CALLBACK_MAGIC;
169 callbacks_initialized = 1;
173 /* Release callbacks (free resources used by them). */
178 if (callbacks_initialized)
180 gdb_callback.shutdown (&gdb_callback);
181 callbacks_initialized = 0;
185 /* GDB version of os_write_stdout callback. */
188 gdb_os_write_stdout (host_callback *p, const char *buf, int len)
193 ui_file_write (gdb_stdtarg, buf, len);
197 /* GDB version of os_flush_stdout callback. */
200 gdb_os_flush_stdout (host_callback *p)
202 gdb_flush (gdb_stdtarg);
205 /* GDB version of os_write_stderr callback. */
208 gdb_os_write_stderr (host_callback *p, const char *buf, int len)
213 for (i = 0; i < len; i++)
217 fputs_unfiltered (b, gdb_stdtarg);
222 /* GDB version of os_flush_stderr callback. */
225 gdb_os_flush_stderr (host_callback *p)
227 gdb_flush (gdb_stderr);
230 /* GDB version of printf_filtered callback. */
233 gdb_os_printf_filtered (host_callback * p, const char *format,...)
236 va_start (args, format);
238 vfprintf_filtered (gdb_stdout, format, args);
243 /* GDB version of error vprintf_filtered. */
246 gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
248 vfprintf_filtered (gdb_stdout, format, ap);
251 /* GDB version of error evprintf_filtered. */
254 gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
256 vfprintf_filtered (gdb_stderr, format, ap);
259 /* GDB version of error callback. */
262 gdb_os_error (host_callback * p, const char *format,...)
269 va_start (args, format);
270 verror (format, args);
276 gdbsim_fetch_register (int regno)
278 static int warn_user = 1;
281 for (regno = 0; regno < NUM_REGS; regno++)
282 gdbsim_fetch_register (regno);
284 else if (REGISTER_NAME (regno) != NULL
285 && *REGISTER_NAME (regno) != '\0')
287 char buf[MAX_REGISTER_RAW_SIZE];
289 if (REGISTER_SIM_REGNO (regno) >= 0)
290 nr_bytes = sim_fetch_register (gdbsim_desc,
291 REGISTER_SIM_REGNO (regno),
292 buf, REGISTER_RAW_SIZE (regno));
296 /* register not applicable, supply zero's */
297 memset (buf, 0, MAX_REGISTER_RAW_SIZE);
298 else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
301 fprintf_unfiltered (gdb_stderr,
302 "Size of register %s (%d/%d) incorrect (%d instead of %d))",
303 REGISTER_NAME (regno),
304 regno, REGISTER_SIM_REGNO (regno),
305 nr_bytes, REGISTER_RAW_SIZE (regno));
308 supply_register (regno, buf);
311 printf_filtered ("gdbsim_fetch_register: %d", regno);
312 /* FIXME: We could print something more intelligible. */
313 dump_mem (buf, REGISTER_RAW_SIZE (regno));
320 gdbsim_store_register (int regno)
324 for (regno = 0; regno < NUM_REGS; regno++)
325 gdbsim_store_register (regno);
327 else if (REGISTER_NAME (regno) != NULL
328 && *REGISTER_NAME (regno) != '\0'
329 && REGISTER_SIM_REGNO (regno) >= 0)
331 char tmp[MAX_REGISTER_RAW_SIZE];
333 read_register_gen (regno, tmp);
334 nr_bytes = sim_store_register (gdbsim_desc,
335 REGISTER_SIM_REGNO (regno),
336 tmp, REGISTER_RAW_SIZE (regno));
337 if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
338 internal_error ("Register size different to expected");
341 printf_filtered ("gdbsim_store_register: %d", regno);
342 /* FIXME: We could print something more intelligible. */
343 dump_mem (tmp, REGISTER_RAW_SIZE (regno));
348 /* Kill the running program. This may involve closing any open files
349 and releasing other resources acquired by the simulated program. */
355 printf_filtered ("gdbsim_kill\n");
357 /* There is no need to `kill' running simulator - the simulator is
362 /* Load an executable file into the target process. This is expected to
363 not only bring new code into the target process, but also to update
364 GDB's symbol tables to match. */
367 gdbsim_load (char *prog, int fromtty)
370 printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
374 /* FIXME: We will print two messages on error.
375 Need error to either not print anything if passed NULL or need
376 another routine that doesn't take any arguments. */
377 if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
378 error ("unable to load program");
380 /* FIXME: If a load command should reset the targets registers then
381 a call to sim_create_inferior() should go here. */
387 /* Start an inferior process and set inferior_pid to its pid.
388 EXEC_FILE is the file to run.
389 ARGS is a string containing the arguments to the program.
390 ENV is the environment vector to pass. Errors reported with error().
391 On VxWorks and various standalone systems, we ignore exec_file. */
392 /* This is called not only when we first attach, but also when the
393 user types "run" after having attached. */
396 gdbsim_create_inferior (char *exec_file, char *args, char **env)
399 char *arg_buf, **argv;
401 if (exec_file == 0 || exec_bfd == 0)
402 warning ("No executable file specified.");
404 warning ("No program loaded.");
407 printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
408 (exec_file ? exec_file : "(NULL)"),
412 remove_breakpoints ();
413 init_wait_for_inferior ();
415 if (exec_file != NULL)
417 len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
418 arg_buf = (char *) alloca (len);
420 strcat (arg_buf, exec_file);
421 strcat (arg_buf, " ");
422 strcat (arg_buf, args);
423 argv = buildargv (arg_buf);
424 make_cleanup_freeargv (argv);
428 sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
431 insert_breakpoints (); /* Needed to get correct instruction in cache */
433 clear_proceed_status ();
435 /* NB: Entry point already set by sim_create_inferior. */
436 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
439 /* The open routine takes the rest of the parameters from the command,
440 and (if successful) pushes a new target onto the stack.
441 Targets should supply this routine, if only to provide an error message. */
442 /* Called when selecting the simulator. EG: (gdb) target sim name. */
445 gdbsim_open (char *args, int from_tty)
452 printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
454 /* Remove current simulator if one exists. Only do this if the simulator
455 has been opened because sim_close requires it.
456 This is important because the call to push_target below will cause
457 sim_close to be called if the simulator is already open, but push_target
458 is called after sim_open! We can't move the call to push_target before
459 the call to sim_open because sim_open may invoke `error'. */
460 if (gdbsim_desc != NULL)
461 unpush_target (&gdbsim_ops);
463 len = (7 + 1 /* gdbsim */
464 + strlen (" -E little")
465 + strlen (" --architecture=xxxxxxxxxx")
466 + (args ? strlen (args) : 0)
468 arg_buf = (char *) alloca (len);
469 strcpy (arg_buf, "gdbsim"); /* 7 */
470 /* Specify the byte order for the target when it is both selectable
471 and explicitly specified by the user (not auto detected). */
472 if (TARGET_BYTE_ORDER_SELECTABLE_P
473 && !TARGET_BYTE_ORDER_AUTO)
475 switch (TARGET_BYTE_ORDER)
478 strcat (arg_buf, " -E big");
481 strcat (arg_buf, " -E little");
484 internal_error ("Value of TARGET_BYTE_ORDER unknown");
487 /* Specify the architecture of the target when it has been
488 explicitly specified */
489 if (!TARGET_ARCHITECTURE_AUTO)
491 strcat (arg_buf, " --architecture=");
492 strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
494 /* finally, any explicit args */
497 strcat (arg_buf, " "); /* 1 */
498 strcat (arg_buf, args);
500 argv = buildargv (arg_buf);
502 error ("Insufficient memory available to allocate simulator arg list.");
503 make_cleanup_freeargv (argv);
506 gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
508 if (gdbsim_desc == 0)
509 error ("unable to create simulator instance");
511 push_target (&gdbsim_ops);
512 target_fetch_registers (-1);
513 printf_filtered ("Connected to the simulator.\n");
516 /* Does whatever cleanup is required for a target that we are no longer
517 going to be calling. Argument says whether we are quitting gdb and
518 should not get hung in case of errors, or whether we want a clean
519 termination even if it takes a while. This routine is automatically
520 always called just before a routine is popped off the target stack.
521 Closing file descriptors and freeing memory are typical things it should
523 /* Close out all files and local state before this target loses control. */
526 gdbsim_close (int quitting)
529 printf_filtered ("gdbsim_close: quitting %d\n", quitting);
533 if (gdbsim_desc != NULL)
535 sim_close (gdbsim_desc, quitting);
540 generic_mourn_inferior ();
543 /* Takes a program previously attached to and detaches it.
544 The program may resume execution (some targets do, some don't) and will
545 no longer stop on signals, etc. We better not have left any breakpoints
546 in the program or it'll die when it hits one. ARGS is arguments
547 typed by the user (e.g. a signal to send the process). FROM_TTY
548 says whether to be verbose or not. */
549 /* Terminate the open connection to the remote debugger.
550 Use this when you want to detach and do something else with your gdb. */
553 gdbsim_detach (char *args, int from_tty)
556 printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
558 pop_target (); /* calls gdbsim_close to do the real work */
560 printf_filtered ("Ending simulator %s debugging\n", target_shortname);
563 /* Resume execution of the target process. STEP says whether to single-step
564 or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
565 to the target, or zero for no signal. */
567 static enum target_signal resume_siggnal;
568 static int resume_step;
571 gdbsim_resume (int pid, int step, enum target_signal siggnal)
573 if (inferior_pid != 42)
574 error ("The program is not being run.");
577 printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
579 resume_siggnal = siggnal;
583 /* Notify the simulator of an asynchronous request to stop.
585 The simulator shall ensure that the stop request is eventually
586 delivered to the simulator. If the call is made while the
587 simulator is not running then the stop request is processed when
588 the simulator is next resumed.
590 For simulators that do not support this operation, just abort */
595 if (!sim_stop (gdbsim_desc))
601 /* GDB version of os_poll_quit callback.
602 Taken from gdb/util.c - should be in a library */
605 gdb_os_poll_quit (host_callback *p)
607 if (ui_loop_hook != NULL)
611 if (quit_flag) /* gdb's idea of quit */
613 quit_flag = 0; /* we've stolen it */
616 else if (immediate_quit)
623 /* Wait for inferior process to do something. Return pid of child,
624 or -1 in case of error; store status through argument pointer STATUS,
625 just as `wait' would. */
628 gdbsim_cntrl_c (int signo)
634 gdbsim_wait (int pid, struct target_waitstatus *status)
636 static RETSIGTYPE (*prev_sigint) ();
638 enum sim_stop reason = sim_running;
641 printf_filtered ("gdbsim_wait\n");
643 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
645 struct sigaction sa, osa;
646 sa.sa_handler = gdbsim_cntrl_c;
647 sigemptyset (&sa.sa_mask);
649 sigaction (SIGINT, &sa, &osa);
650 prev_sigint = osa.sa_handler;
653 prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
655 sim_resume (gdbsim_desc, resume_step,
656 target_signal_to_host (resume_siggnal));
657 signal (SIGINT, prev_sigint);
660 sim_stop_reason (gdbsim_desc, &reason, &sigrc);
665 status->kind = TARGET_WAITKIND_EXITED;
666 status->value.integer = sigrc;
677 status->kind = TARGET_WAITKIND_STOPPED;
678 /* The signal in sigrc is a host signal. That probably
680 status->value.sig = target_signal_from_host (sigrc);
685 status->kind = TARGET_WAITKIND_SIGNALLED;
686 /* The signal in sigrc is a host signal. That probably
688 status->value.sig = target_signal_from_host (sigrc);
692 /* FIXME: Is this correct? */
699 /* Get ready to modify the registers array. On machines which store
700 individual registers, this doesn't need to do anything. On machines
701 which store all the registers in one fell swoop, this makes sure
702 that registers contains all the registers from the program being
706 gdbsim_prepare_to_store (void)
708 /* Do nothing, since we can store individual regs */
711 /* Transfer LEN bytes between GDB address MYADDR and target address
712 MEMADDR. If WRITE is non-zero, transfer them to the target,
713 otherwise transfer them from the target. TARGET is unused.
715 Returns the number of bytes transferred. */
718 gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len,
720 struct mem_attrib *attrib ATTRIBUTE_UNUSED,
721 struct target_ops *target ATTRIBUTE_UNUSED)
724 error ("No program loaded.");
728 /* FIXME: Send to something other than STDOUT? */
729 printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x");
730 gdb_print_host_address (myaddr, gdb_stdout);
731 printf_filtered (", memaddr 0x%s, len %d, write %d\n",
732 paddr_nz (memaddr), len, write);
733 if (sr_get_debug () && write)
734 dump_mem (myaddr, len);
739 len = sim_write (gdbsim_desc, memaddr, myaddr, len);
743 len = sim_read (gdbsim_desc, memaddr, myaddr, len);
744 if (sr_get_debug () && len > 0)
745 dump_mem (myaddr, len);
751 gdbsim_files_info (struct target_ops *target)
753 char *file = "nothing";
756 file = bfd_get_filename (exec_bfd);
759 printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
763 printf_filtered ("\tAttached to %s running program %s\n",
764 target_shortname, file);
765 sim_info (gdbsim_desc, 0);
769 /* Clear the simulator's notion of what the break points are. */
772 gdbsim_mourn_inferior (void)
775 printf_filtered ("gdbsim_mourn_inferior:\n");
777 remove_breakpoints ();
778 generic_mourn_inferior ();
782 gdbsim_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
784 #ifdef SIM_HAS_BREAKPOINTS
787 retcode = sim_set_breakpoint (gdbsim_desc, addr);
793 case SIM_RC_INSUFFICIENT_RESOURCES:
799 return memory_insert_breakpoint (addr, contents_cache);
804 gdbsim_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
806 #ifdef SIM_HAS_BREAKPOINTS
809 retcode = sim_clear_breakpoint (gdbsim_desc, addr);
814 case SIM_RC_UNKNOWN_BREAKPOINT:
816 case SIM_RC_INSUFFICIENT_RESOURCES:
822 return memory_remove_breakpoint (addr, contents_cache);
826 /* Pass the command argument through to the simulator verbatim. The
827 simulator must do any command interpretation work. */
830 simulator_command (char *args, int from_tty)
832 if (gdbsim_desc == NULL)
835 /* PREVIOUSLY: The user may give a command before the simulator
836 is opened. [...] (??? assuming of course one wishes to
837 continue to allow commands to be sent to unopened simulators,
838 which isn't entirely unreasonable). */
840 /* The simulator is a builtin abstraction of a remote target.
841 Consistent with that model, access to the simulator, via sim
842 commands, is restricted to the period when the channel to the
843 simulator is open. */
845 error ("Not connected to the simulator target");
848 sim_do_command (gdbsim_desc, args);
850 /* Invalidate the register cache, in case the simulator command does
852 registers_changed ();
855 /* Define the target subroutine names */
857 struct target_ops gdbsim_ops;
860 init_gdbsim_ops (void)
862 gdbsim_ops.to_shortname = "sim";
863 gdbsim_ops.to_longname = "simulator";
864 gdbsim_ops.to_doc = "Use the compiled-in simulator.";
865 gdbsim_ops.to_open = gdbsim_open;
866 gdbsim_ops.to_close = gdbsim_close;
867 gdbsim_ops.to_attach = NULL;
868 gdbsim_ops.to_post_attach = NULL;
869 gdbsim_ops.to_require_attach = NULL;
870 gdbsim_ops.to_detach = gdbsim_detach;
871 gdbsim_ops.to_require_detach = NULL;
872 gdbsim_ops.to_resume = gdbsim_resume;
873 gdbsim_ops.to_wait = gdbsim_wait;
874 gdbsim_ops.to_post_wait = NULL;
875 gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
876 gdbsim_ops.to_store_registers = gdbsim_store_register;
877 gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
878 gdbsim_ops.to_xfer_memory = gdbsim_xfer_inferior_memory;
879 gdbsim_ops.to_files_info = gdbsim_files_info;
880 gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
881 gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
882 gdbsim_ops.to_terminal_init = NULL;
883 gdbsim_ops.to_terminal_inferior = NULL;
884 gdbsim_ops.to_terminal_ours_for_output = NULL;
885 gdbsim_ops.to_terminal_ours = NULL;
886 gdbsim_ops.to_terminal_info = NULL;
887 gdbsim_ops.to_kill = gdbsim_kill;
888 gdbsim_ops.to_load = gdbsim_load;
889 gdbsim_ops.to_lookup_symbol = NULL;
890 gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
891 gdbsim_ops.to_post_startup_inferior = NULL;
892 gdbsim_ops.to_acknowledge_created_inferior = NULL;
893 gdbsim_ops.to_clone_and_follow_inferior = NULL;
894 gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
895 gdbsim_ops.to_insert_fork_catchpoint = NULL;
896 gdbsim_ops.to_remove_fork_catchpoint = NULL;
897 gdbsim_ops.to_insert_vfork_catchpoint = NULL;
898 gdbsim_ops.to_remove_vfork_catchpoint = NULL;
899 gdbsim_ops.to_has_forked = NULL;
900 gdbsim_ops.to_has_vforked = NULL;
901 gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
902 gdbsim_ops.to_post_follow_vfork = NULL;
903 gdbsim_ops.to_insert_exec_catchpoint = NULL;
904 gdbsim_ops.to_remove_exec_catchpoint = NULL;
905 gdbsim_ops.to_has_execd = NULL;
906 gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
907 gdbsim_ops.to_has_exited = NULL;
908 gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
909 gdbsim_ops.to_can_run = 0;
910 gdbsim_ops.to_notice_signals = 0;
911 gdbsim_ops.to_thread_alive = 0;
912 gdbsim_ops.to_stop = gdbsim_stop;
913 gdbsim_ops.to_pid_to_exec_file = NULL;
914 gdbsim_ops.to_core_file_to_sym_file = NULL;
915 gdbsim_ops.to_stratum = process_stratum;
916 gdbsim_ops.DONT_USE = NULL;
917 gdbsim_ops.to_has_all_memory = 1;
918 gdbsim_ops.to_has_memory = 1;
919 gdbsim_ops.to_has_stack = 1;
920 gdbsim_ops.to_has_registers = 1;
921 gdbsim_ops.to_has_execution = 1;
922 gdbsim_ops.to_sections = NULL;
923 gdbsim_ops.to_sections_end = NULL;
924 gdbsim_ops.to_magic = OPS_MAGIC;
926 #ifdef TARGET_REDEFINE_DEFAULT_OPS
927 TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
932 _initialize_remote_sim (void)
935 add_target (&gdbsim_ops);
937 add_com ("sim <command>", class_obscure, simulator_command,
938 "Send a command to the simulator.");