1 /* Generic remote debugging interface for simulators.
2 Copyright 1993, 1994, 1996, 1997 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, Boston, MA 02111-1307, USA. */
26 #include "gdb_string.h"
36 #include "remote-sim.h"
37 #include "remote-utils.h"
42 extern int (*ui_loop_hook) PARAMS ((int signo));
44 static void dump_mem PARAMS ((char *buf, int len));
46 static void init_callbacks PARAMS ((void));
48 static void end_callbacks PARAMS ((void));
50 static int gdb_os_write_stdout PARAMS ((host_callback *, const char *, int));
52 static void gdb_os_flush_stdout PARAMS ((host_callback *));
54 static int gdb_os_write_stderr PARAMS ((host_callback *, const char *, int));
56 static void gdb_os_flush_stderr PARAMS ((host_callback *));
58 static int gdb_os_poll_quit PARAMS ((host_callback *));
60 /* printf_filtered is depreciated */
61 static void gdb_os_printf_filtered PARAMS ((host_callback *, const char *, ...));
63 static void gdb_os_vprintf_filtered PARAMS ((host_callback *, const char *, va_list));
65 static void gdb_os_evprintf_filtered PARAMS ((host_callback *, const char *, va_list));
67 static void gdb_os_error PARAMS ((host_callback *, const char *, ...));
69 static void gdbsim_fetch_register PARAMS ((int regno));
71 static void gdbsim_store_register PARAMS ((int regno));
73 static void gdbsim_kill PARAMS ((void));
75 static void gdbsim_load PARAMS ((char *prog, int fromtty));
77 static void gdbsim_create_inferior PARAMS ((char *exec_file, char *args, char **env));
79 static void gdbsim_open PARAMS ((char *args, int from_tty));
81 static void gdbsim_close PARAMS ((int quitting));
83 static void gdbsim_detach PARAMS ((char *args, int from_tty));
85 static void gdbsim_resume PARAMS ((int pid, int step, enum target_signal siggnal));
87 static int gdbsim_wait PARAMS ((int pid, struct target_waitstatus *status));
89 static void gdbsim_prepare_to_store PARAMS ((void));
91 static int gdbsim_xfer_inferior_memory PARAMS ((CORE_ADDR memaddr,
92 char *myaddr, int len,
94 struct target_ops *target));
96 static void gdbsim_files_info PARAMS ((struct target_ops *target));
98 static void gdbsim_mourn_inferior PARAMS ((void));
100 static void gdbsim_stop PARAMS ((void));
102 void simulator_command PARAMS ((char *args, int from_tty));
104 /* Naming convention:
106 sim_* are the interface to the simulator (see remote-sim.h).
107 gdbsim_* are stuff which is internal to gdb. */
109 /* Forward data declarations */
110 extern struct target_ops gdbsim_ops;
112 static int program_loaded = 0;
114 /* We must keep track of whether the simulator has been opened or not because
115 GDB can call a target's close routine twice, but sim_close doesn't allow
116 this. We also need to record the result of sim_open so we can pass it
117 back to the other sim_foo routines. */
118 static SIM_DESC gdbsim_desc = 0;
127 if (len == 8 || len == 4)
130 memcpy (l, buf, len);
131 printf_filtered ("\t0x%x", l[0]);
132 printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
137 printf_filtered ("\t");
138 for (i = 0; i < len; i++)
139 printf_filtered ("0x%x ", buf[i]);
140 printf_filtered ("\n");
145 static host_callback gdb_callback;
146 static int callbacks_initialized = 0;
148 /* Initialize gdb_callback. */
153 if (! callbacks_initialized)
155 gdb_callback = default_callback;
156 gdb_callback.init (&gdb_callback);
157 gdb_callback.write_stdout = gdb_os_write_stdout;
158 gdb_callback.flush_stdout = gdb_os_flush_stdout;
159 gdb_callback.write_stderr = gdb_os_write_stderr;
160 gdb_callback.flush_stderr = gdb_os_flush_stderr;
161 gdb_callback.printf_filtered = gdb_os_printf_filtered;
162 gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
163 gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
164 gdb_callback.error = gdb_os_error;
165 gdb_callback.poll_quit = gdb_os_poll_quit;
166 gdb_callback.magic = HOST_CALLBACK_MAGIC;
167 callbacks_initialized = 1;
171 /* Release callbacks (free resources used by them). */
176 if (callbacks_initialized)
178 gdb_callback.shutdown (&gdb_callback);
179 callbacks_initialized = 0;
183 /* GDB version of os_write_stdout callback. */
186 gdb_os_write_stdout (p, buf, len)
194 for (i = 0; i < len; i++)
198 if (target_output_hook)
199 target_output_hook (b);
201 fputs_filtered (b, gdb_stdout);
206 /* GDB version of os_flush_stdout callback. */
209 gdb_os_flush_stdout (p)
212 gdb_flush (gdb_stdout);
215 /* GDB version of os_write_stderr callback. */
218 gdb_os_write_stderr (p, buf, len)
226 for (i = 0; i < len; i++)
230 if (target_output_hook)
231 target_output_hook (b);
233 fputs_filtered (b, gdb_stderr);
238 /* GDB version of os_flush_stderr callback. */
241 gdb_os_flush_stderr (p)
244 gdb_flush (gdb_stderr);
247 /* GDB version of printf_filtered callback. */
251 #ifdef ANSI_PROTOTYPES
252 gdb_os_printf_filtered (host_callback *p, const char *format, ...)
254 gdb_os_printf_filtered (p, va_alist)
260 #ifdef ANSI_PROTOTYPES
261 va_start (args, format);
266 format = va_arg (args, char *);
269 vfprintf_filtered (gdb_stdout, format, args);
274 /* GDB version of error vprintf_filtered. */
278 #ifdef ANSI_PROTOTYPES
279 gdb_os_vprintf_filtered (host_callback *p, const char *format, va_list ap)
281 gdb_os_vprintf_filtered (p, format, ap)
287 vfprintf_filtered (gdb_stdout, format, ap);
290 /* GDB version of error evprintf_filtered. */
294 #ifdef ANSI_PROTOTYPES
295 gdb_os_evprintf_filtered (host_callback *p, const char *format, va_list ap)
297 gdb_os_evprintf_filtered (p, format, ap)
303 vfprintf_filtered (gdb_stderr, format, ap);
306 /* GDB version of error callback. */
310 #ifdef ANSI_PROTOTYPES
311 gdb_os_error (host_callback *p, const char *format, ...)
313 gdb_os_error (p, va_alist)
323 #ifdef ANSI_PROTOTYPES
324 va_start (args, format);
329 format = va_arg (args, char *);
333 vfprintf_filtered (gdb_stderr, format, args);
334 fprintf_filtered (gdb_stderr, "\n");
336 return_to_top_level (RETURN_ERROR);
341 gdbsim_fetch_register (regno)
344 static int warn_user = 1;
347 for (regno = 0; regno < NUM_REGS; regno++)
348 gdbsim_fetch_register (regno);
350 else if (REGISTER_NAME (regno) != NULL && *REGISTER_NAME (regno) != '\0')
352 char buf[MAX_REGISTER_RAW_SIZE];
353 int nr_bytes = sim_fetch_register (gdbsim_desc, regno, buf, REGISTER_RAW_SIZE (regno));
355 /* register not applicable, supply zero's */
356 memset (buf, 0, MAX_REGISTER_RAW_SIZE);
357 else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
360 printf_unfiltered ("Size of register %s (%d) incorrect (%d instead of %d))",
361 REGISTER_NAME (regno), regno,
362 nr_bytes, REGISTER_RAW_SIZE (regno));
365 supply_register (regno, buf);
368 printf_filtered ("gdbsim_fetch_register: %d", regno);
369 /* FIXME: We could print something more intelligible. */
370 dump_mem (buf, REGISTER_RAW_SIZE (regno));
377 gdbsim_store_register (regno)
382 for (regno = 0; regno < NUM_REGS; regno++)
383 gdbsim_store_register (regno);
385 else if (REGISTER_NAME (regno) != NULL && *REGISTER_NAME (regno) != '\0')
387 char tmp[MAX_REGISTER_RAW_SIZE];
389 read_register_gen (regno, tmp);
390 nr_bytes = sim_store_register (gdbsim_desc, regno, tmp, REGISTER_RAW_SIZE (regno));
391 if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
392 fatal ("Register size different to expected");
395 printf_filtered ("gdbsim_store_register: %d", regno);
396 /* FIXME: We could print something more intelligible. */
397 dump_mem (tmp, REGISTER_RAW_SIZE (regno));
402 /* Kill the running program. This may involve closing any open files
403 and releasing other resources acquired by the simulated program. */
409 printf_filtered ("gdbsim_kill\n");
411 /* There is no need to `kill' running simulator - the simulator is
416 /* Load an executable file into the target process. This is expected to
417 not only bring new code into the target process, but also to update
418 GDB's symbol tables to match. */
421 gdbsim_load (prog, fromtty)
426 printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
430 /* FIXME: We will print two messages on error.
431 Need error to either not print anything if passed NULL or need
432 another routine that doesn't take any arguments. */
433 if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
434 error ("unable to load program");
436 /* FIXME: If a load command should reset the targets registers then
437 a call to sim_create_inferior() should go here. */
443 /* Start an inferior process and set inferior_pid to its pid.
444 EXEC_FILE is the file to run.
445 ARGS is a string containing the arguments to the program.
446 ENV is the environment vector to pass. Errors reported with error().
447 On VxWorks and various standalone systems, we ignore exec_file. */
448 /* This is called not only when we first attach, but also when the
449 user types "run" after having attached. */
452 gdbsim_create_inferior (exec_file, args, env)
458 char *arg_buf,**argv;
460 if (exec_file == 0 || exec_bfd == 0)
461 warning ("No executable file specified.");
462 if (! program_loaded)
463 warning ("No program loaded.");
466 printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
467 (exec_file ? exec_file: "(NULL)"),
471 remove_breakpoints ();
472 init_wait_for_inferior ();
474 if (exec_file != NULL)
476 len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10;
477 arg_buf = (char *) alloca (len);
479 strcat (arg_buf, exec_file);
480 strcat (arg_buf, " ");
481 strcat (arg_buf, args);
482 argv = buildargv (arg_buf);
483 make_cleanup_freeargv (argv);
487 sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
490 insert_breakpoints (); /* Needed to get correct instruction in cache */
492 clear_proceed_status ();
494 /* NB: Entry point already set by sim_create_inferior. */
495 proceed ((CORE_ADDR)-1, TARGET_SIGNAL_DEFAULT, 0);
498 /* The open routine takes the rest of the parameters from the command,
499 and (if successful) pushes a new target onto the stack.
500 Targets should supply this routine, if only to provide an error message. */
501 /* Called when selecting the simulator. EG: (gdb) target sim name. */
504 gdbsim_open (args, from_tty)
513 printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
515 /* Remove current simulator if one exists. Only do this if the simulator
516 has been opened because sim_close requires it.
517 This is important because the call to push_target below will cause
518 sim_close to be called if the simulator is already open, but push_target
519 is called after sim_open! We can't move the call to push_target before
520 the call to sim_open because sim_open may invoke `error'. */
521 if (gdbsim_desc != NULL)
522 unpush_target (&gdbsim_ops);
524 len = (7 + 1 /* gdbsim */
525 + strlen (" -E little")
526 + strlen (" --architecture=xxxxxxxxxx")
527 + (args ? strlen (args) : 0)
529 arg_buf = (char *) alloca (len);
530 strcpy (arg_buf, "gdbsim"); /* 7 */
531 /* Specify the byte order for the target when it is both selectable
532 and explicitly specified by the user (not auto detected). */
533 if (TARGET_BYTE_ORDER_SELECTABLE_P
534 && !TARGET_BYTE_ORDER_AUTO)
536 switch (TARGET_BYTE_ORDER)
539 strcat (arg_buf, " -E big");
542 strcat (arg_buf, " -E little");
545 fatal ("Value of TARGET_BYTE_ORDER unknown");
548 /* Specify the architecture of the target when it has been
549 explicitly specified */
550 if (!TARGET_ARCHITECTURE_AUTO)
552 strcat (arg_buf, " --architecture=");
553 strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
555 /* finally, any explicit args */
558 strcat (arg_buf, " "); /* 1 */
559 strcat (arg_buf, args);
561 argv = buildargv (arg_buf);
563 error ("Insufficient memory available to allocate simulator arg list.");
564 make_cleanup_freeargv (argv);
567 gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
569 if (gdbsim_desc == 0)
570 error ("unable to create simulator instance");
572 push_target (&gdbsim_ops);
573 target_fetch_registers (-1);
574 printf_filtered ("Connected to the simulator.\n");
577 /* Does whatever cleanup is required for a target that we are no longer
578 going to be calling. Argument says whether we are quitting gdb and
579 should not get hung in case of errors, or whether we want a clean
580 termination even if it takes a while. This routine is automatically
581 always called just before a routine is popped off the target stack.
582 Closing file descriptors and freeing memory are typical things it should
584 /* Close out all files and local state before this target loses control. */
587 gdbsim_close (quitting)
591 printf_filtered ("gdbsim_close: quitting %d\n", quitting);
595 if (gdbsim_desc != NULL)
597 sim_close (gdbsim_desc, quitting);
604 /* Takes a program previously attached to and detaches it.
605 The program may resume execution (some targets do, some don't) and will
606 no longer stop on signals, etc. We better not have left any breakpoints
607 in the program or it'll die when it hits one. ARGS is arguments
608 typed by the user (e.g. a signal to send the process). FROM_TTY
609 says whether to be verbose or not. */
610 /* Terminate the open connection to the remote debugger.
611 Use this when you want to detach and do something else with your gdb. */
614 gdbsim_detach (args,from_tty)
619 printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
621 pop_target (); /* calls gdbsim_close to do the real work */
623 printf_filtered ("Ending simulator %s debugging\n", target_shortname);
626 /* Resume execution of the target process. STEP says whether to single-step
627 or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
628 to the target, or zero for no signal. */
630 static enum target_signal resume_siggnal;
631 static int resume_step;
634 gdbsim_resume (pid, step, siggnal)
636 enum target_signal siggnal;
638 if (inferior_pid != 42)
639 error ("The program is not being run.");
642 printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
644 resume_siggnal = siggnal;
648 /* Notify the simulator of an asynchronous request to stop.
650 The simulator shall ensure that the stop request is eventually
651 delivered to the simulator. If the call is made while the
652 simulator is not running then the stop request is processed when
653 the simulator is next resumed.
655 For simulators that do not support this operation, just abort */
660 if (! sim_stop (gdbsim_desc))
666 /* GDB version of os_poll_quit callback.
667 Taken from gdb/util.c - should be in a library */
673 if (ui_loop_hook != NULL)
677 if (quit_flag) /* gdb's idea of quit */
679 quit_flag = 0; /* we've stolen it */
682 else if (immediate_quit)
689 /* Wait for inferior process to do something. Return pid of child,
690 or -1 in case of error; store status through argument pointer STATUS,
691 just as `wait' would. */
694 gdbsim_cntrl_c (signo)
701 gdbsim_wait (pid, status)
703 struct target_waitstatus *status;
705 static RETSIGTYPE (*prev_sigint) ();
707 enum sim_stop reason = sim_running;
710 printf_filtered ("gdbsim_wait\n");
712 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
714 struct sigaction sa, osa;
715 sa.sa_handler = gdbsim_cntrl_c;
716 sigemptyset (&sa.sa_mask);
718 sigaction (SIGINT, &sa, &osa);
719 prev_sigint = osa.sa_handler;
722 prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
724 sim_resume (gdbsim_desc, resume_step,
725 target_signal_to_host (resume_siggnal));
726 signal (SIGINT, prev_sigint);
729 sim_stop_reason (gdbsim_desc, &reason, &sigrc);
734 status->kind = TARGET_WAITKIND_EXITED;
735 status->value.integer = sigrc;
746 status->kind = TARGET_WAITKIND_STOPPED;
747 /* The signal in sigrc is a host signal. That probably
749 status->value.sig = target_signal_from_host (sigrc);
754 status->kind = TARGET_WAITKIND_SIGNALLED;
755 /* The signal in sigrc is a host signal. That probably
757 status->value.sig = target_signal_from_host (sigrc);
761 /* FIXME: Is this correct? */
768 /* Get ready to modify the registers array. On machines which store
769 individual registers, this doesn't need to do anything. On machines
770 which store all the registers in one fell swoop, this makes sure
771 that registers contains all the registers from the program being
775 gdbsim_prepare_to_store ()
777 /* Do nothing, since we can store individual regs */
781 gdbsim_xfer_inferior_memory (memaddr, myaddr, len, write, target)
786 struct target_ops *target; /* ignored */
788 if (! program_loaded)
789 error ("No program loaded.");
793 printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
794 myaddr, memaddr, len, write);
795 if (sr_get_debug () && write)
796 dump_mem(myaddr, len);
801 len = sim_write (gdbsim_desc, memaddr, myaddr, len);
805 len = sim_read (gdbsim_desc, memaddr, myaddr, len);
806 if (sr_get_debug () && len > 0)
807 dump_mem(myaddr, len);
813 gdbsim_files_info (target)
814 struct target_ops *target;
816 char *file = "nothing";
819 file = bfd_get_filename (exec_bfd);
822 printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
826 printf_filtered ("\tAttached to %s running program %s\n",
827 target_shortname, file);
828 sim_info (gdbsim_desc, 0);
832 /* Clear the simulator's notion of what the break points are. */
835 gdbsim_mourn_inferior ()
838 printf_filtered ("gdbsim_mourn_inferior:\n");
840 remove_breakpoints ();
841 generic_mourn_inferior ();
845 gdbsim_insert_breakpoint (addr, contents_cache)
847 char *contents_cache;
849 #ifdef SIM_HAS_BREAKPOINTS
852 retcode = sim_set_breakpoint (gdbsim_desc, addr);
858 case SIM_RC_INSUFFICIENT_RESOURCES:
864 return memory_insert_breakpoint (addr, contents_cache);
869 gdbsim_remove_breakpoint (addr, contents_cache)
871 char *contents_cache;
873 #ifdef SIM_HAS_BREAKPOINTS
876 retcode = sim_clear_breakpoint (gdbsim_desc, addr);
881 case SIM_RC_UNKNOWN_BREAKPOINT:
883 case SIM_RC_INSUFFICIENT_RESOURCES:
889 return memory_remove_breakpoint (addr, contents_cache);
893 /* Pass the command argument through to the simulator verbatim. The
894 simulator must do any command interpretation work. */
897 simulator_command (args, from_tty)
901 if (gdbsim_desc == NULL)
904 /* PREVIOUSLY: The user may give a command before the simulator
905 is opened. [...] (??? assuming of course one wishes to
906 continue to allow commands to be sent to unopened simulators,
907 which isn't entirely unreasonable). */
909 /* The simulator is a builtin abstraction of a remote target.
910 Consistent with that model, access to the simulator, via sim
911 commands, is restricted to the period when the channel to the
912 simulator is open. */
914 error ("Not connected to the simulator target");
917 sim_do_command (gdbsim_desc, args);
919 /* Invalidate the register cache, in case the simulator command does
921 registers_changed ();
924 /* Define the target subroutine names */
926 struct target_ops gdbsim_ops ;
929 init_gdbsim_ops(void)
931 gdbsim_ops.to_shortname = "sim";
932 gdbsim_ops.to_longname = "simulator";
933 gdbsim_ops.to_doc = "Use the compiled-in simulator.";
934 gdbsim_ops.to_open = gdbsim_open;
935 gdbsim_ops.to_close = gdbsim_close;
936 gdbsim_ops.to_attach = NULL;
937 gdbsim_ops.to_post_attach = NULL;
938 gdbsim_ops.to_require_attach = NULL;
939 gdbsim_ops.to_detach = gdbsim_detach;
940 gdbsim_ops.to_require_detach = NULL;
941 gdbsim_ops.to_resume = gdbsim_resume;
942 gdbsim_ops.to_wait = gdbsim_wait;
943 gdbsim_ops.to_post_wait = NULL;
944 gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
945 gdbsim_ops.to_store_registers = gdbsim_store_register;
946 gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
947 gdbsim_ops.to_xfer_memory = gdbsim_xfer_inferior_memory;
948 gdbsim_ops.to_files_info = gdbsim_files_info;
949 gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
950 gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
951 gdbsim_ops.to_terminal_init = NULL;
952 gdbsim_ops.to_terminal_inferior = NULL;
953 gdbsim_ops.to_terminal_ours_for_output = NULL;
954 gdbsim_ops.to_terminal_ours = NULL;
955 gdbsim_ops.to_terminal_info = NULL;
956 gdbsim_ops.to_kill = gdbsim_kill;
957 gdbsim_ops.to_load = gdbsim_load;
958 gdbsim_ops.to_lookup_symbol = NULL;
959 gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
960 gdbsim_ops.to_post_startup_inferior = NULL;
961 gdbsim_ops.to_acknowledge_created_inferior = NULL;
962 gdbsim_ops.to_clone_and_follow_inferior = NULL;
963 gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
964 gdbsim_ops.to_insert_fork_catchpoint = NULL;
965 gdbsim_ops.to_remove_fork_catchpoint = NULL;
966 gdbsim_ops.to_insert_vfork_catchpoint = NULL;
967 gdbsim_ops.to_remove_vfork_catchpoint = NULL;
968 gdbsim_ops.to_has_forked = NULL;
969 gdbsim_ops.to_has_vforked = NULL;
970 gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
971 gdbsim_ops.to_post_follow_vfork = NULL;
972 gdbsim_ops.to_insert_exec_catchpoint = NULL;
973 gdbsim_ops.to_remove_exec_catchpoint = NULL;
974 gdbsim_ops.to_has_execd = NULL;
975 gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
976 gdbsim_ops.to_has_exited = NULL;
977 gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
978 gdbsim_ops.to_can_run = 0;
979 gdbsim_ops.to_notice_signals = 0;
980 gdbsim_ops.to_thread_alive = 0;
981 gdbsim_ops.to_stop = gdbsim_stop;
982 gdbsim_ops.to_pid_to_exec_file = NULL;
983 gdbsim_ops.to_core_file_to_sym_file = NULL;
984 gdbsim_ops.to_stratum = process_stratum;
985 gdbsim_ops.DONT_USE = NULL;
986 gdbsim_ops.to_has_all_memory = 1;
987 gdbsim_ops.to_has_memory = 1;
988 gdbsim_ops.to_has_stack = 1;
989 gdbsim_ops.to_has_registers = 1;
990 gdbsim_ops.to_has_execution = 1;
991 gdbsim_ops.to_sections = NULL;
992 gdbsim_ops.to_sections_end = NULL;
993 gdbsim_ops.to_magic = OPS_MAGIC;
995 #ifdef TARGET_REDEFINE_DEFAULT_OPS
996 TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
1001 _initialize_remote_sim ()
1004 add_target (&gdbsim_ops);
1006 add_com ("sim <command>", class_obscure, simulator_command,
1007 "Send a command to the simulator.");