1 /* Generic remote debugging interface for simulators.
2 Copyright 1993, 1994, 1996, 1997, 2000 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. */
27 #include "gdb_string.h"
37 #include "remote-sim.h"
38 #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,
95 char *myaddr, int len,
96 int write, 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]);
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. */
151 init_callbacks (void)
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 (host_callback *p, const char *buf, int len)
191 ui_file_write (gdb_stdtarg, buf, len);
195 /* GDB version of os_flush_stdout callback. */
198 gdb_os_flush_stdout (host_callback *p)
200 gdb_flush (gdb_stdtarg);
203 /* GDB version of os_write_stderr callback. */
206 gdb_os_write_stderr (host_callback *p, const char *buf, int len)
211 for (i = 0; i < len; i++)
215 fputs_unfiltered (b, gdb_stdtarg);
220 /* GDB version of os_flush_stderr callback. */
223 gdb_os_flush_stderr (host_callback *p)
225 gdb_flush (gdb_stderr);
228 /* GDB version of printf_filtered callback. */
231 gdb_os_printf_filtered (host_callback * p, const char *format,...)
234 va_start (args, format);
236 vfprintf_filtered (gdb_stdout, format, args);
241 /* GDB version of error vprintf_filtered. */
244 gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
246 vfprintf_filtered (gdb_stdout, format, ap);
249 /* GDB version of error evprintf_filtered. */
252 gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
254 vfprintf_filtered (gdb_stderr, format, ap);
257 /* GDB version of error callback. */
260 gdb_os_error (host_callback * p, const char *format,...)
267 va_start (args, format);
268 verror (format, args);
274 gdbsim_fetch_register (int regno)
276 static int warn_user = 1;
279 for (regno = 0; regno < NUM_REGS; regno++)
280 gdbsim_fetch_register (regno);
282 else if (REGISTER_NAME (regno) != NULL
283 && *REGISTER_NAME (regno) != '\0')
285 char buf[MAX_REGISTER_RAW_SIZE];
287 if (REGISTER_SIM_REGNO (regno) >= 0)
288 nr_bytes = sim_fetch_register (gdbsim_desc,
289 REGISTER_SIM_REGNO (regno),
290 buf, REGISTER_RAW_SIZE (regno));
294 /* register not applicable, supply zero's */
295 memset (buf, 0, MAX_REGISTER_RAW_SIZE);
296 else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
299 fprintf_unfiltered (gdb_stderr,
300 "Size of register %s (%d/%d) incorrect (%d instead of %d))",
301 REGISTER_NAME (regno),
302 regno, REGISTER_SIM_REGNO (regno),
303 nr_bytes, REGISTER_RAW_SIZE (regno));
306 supply_register (regno, buf);
309 printf_filtered ("gdbsim_fetch_register: %d", regno);
310 /* FIXME: We could print something more intelligible. */
311 dump_mem (buf, REGISTER_RAW_SIZE (regno));
318 gdbsim_store_register (int regno)
322 for (regno = 0; regno < NUM_REGS; regno++)
323 gdbsim_store_register (regno);
325 else if (REGISTER_NAME (regno) != NULL
326 && *REGISTER_NAME (regno) != '\0'
327 && REGISTER_SIM_REGNO (regno) >= 0)
329 char tmp[MAX_REGISTER_RAW_SIZE];
331 read_register_gen (regno, tmp);
332 nr_bytes = sim_store_register (gdbsim_desc,
333 REGISTER_SIM_REGNO (regno),
334 tmp, REGISTER_RAW_SIZE (regno));
335 if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
336 internal_error ("Register size different to expected");
339 printf_filtered ("gdbsim_store_register: %d", regno);
340 /* FIXME: We could print something more intelligible. */
341 dump_mem (tmp, REGISTER_RAW_SIZE (regno));
346 /* Kill the running program. This may involve closing any open files
347 and releasing other resources acquired by the simulated program. */
353 printf_filtered ("gdbsim_kill\n");
355 /* There is no need to `kill' running simulator - the simulator is
360 /* Load an executable file into the target process. This is expected to
361 not only bring new code into the target process, but also to update
362 GDB's symbol tables to match. */
365 gdbsim_load (char *prog, int fromtty)
368 printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
372 /* FIXME: We will print two messages on error.
373 Need error to either not print anything if passed NULL or need
374 another routine that doesn't take any arguments. */
375 if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
376 error ("unable to load program");
378 /* FIXME: If a load command should reset the targets registers then
379 a call to sim_create_inferior() should go here. */
385 /* Start an inferior process and set inferior_pid to its pid.
386 EXEC_FILE is the file to run.
387 ARGS is a string containing the arguments to the program.
388 ENV is the environment vector to pass. Errors reported with error().
389 On VxWorks and various standalone systems, we ignore exec_file. */
390 /* This is called not only when we first attach, but also when the
391 user types "run" after having attached. */
394 gdbsim_create_inferior (char *exec_file, char *args, char **env)
397 char *arg_buf, **argv;
399 if (exec_file == 0 || exec_bfd == 0)
400 warning ("No executable file specified.");
402 warning ("No program loaded.");
405 printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
406 (exec_file ? exec_file : "(NULL)"),
410 remove_breakpoints ();
411 init_wait_for_inferior ();
413 if (exec_file != NULL)
415 len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
416 arg_buf = (char *) alloca (len);
418 strcat (arg_buf, exec_file);
419 strcat (arg_buf, " ");
420 strcat (arg_buf, args);
421 argv = buildargv (arg_buf);
422 make_cleanup_freeargv (argv);
426 sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
429 insert_breakpoints (); /* Needed to get correct instruction in cache */
431 clear_proceed_status ();
433 /* NB: Entry point already set by sim_create_inferior. */
434 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
437 /* The open routine takes the rest of the parameters from the command,
438 and (if successful) pushes a new target onto the stack.
439 Targets should supply this routine, if only to provide an error message. */
440 /* Called when selecting the simulator. EG: (gdb) target sim name. */
443 gdbsim_open (char *args, int from_tty)
450 printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
452 /* Remove current simulator if one exists. Only do this if the simulator
453 has been opened because sim_close requires it.
454 This is important because the call to push_target below will cause
455 sim_close to be called if the simulator is already open, but push_target
456 is called after sim_open! We can't move the call to push_target before
457 the call to sim_open because sim_open may invoke `error'. */
458 if (gdbsim_desc != NULL)
459 unpush_target (&gdbsim_ops);
461 len = (7 + 1 /* gdbsim */
462 + strlen (" -E little")
463 + strlen (" --architecture=xxxxxxxxxx")
464 + (args ? strlen (args) : 0)
466 arg_buf = (char *) alloca (len);
467 strcpy (arg_buf, "gdbsim"); /* 7 */
468 /* Specify the byte order for the target when it is both selectable
469 and explicitly specified by the user (not auto detected). */
470 if (TARGET_BYTE_ORDER_SELECTABLE_P
471 && !TARGET_BYTE_ORDER_AUTO)
473 switch (TARGET_BYTE_ORDER)
476 strcat (arg_buf, " -E big");
479 strcat (arg_buf, " -E little");
482 internal_error ("Value of TARGET_BYTE_ORDER unknown");
485 /* Specify the architecture of the target when it has been
486 explicitly specified */
487 if (!TARGET_ARCHITECTURE_AUTO)
489 strcat (arg_buf, " --architecture=");
490 strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
492 /* finally, any explicit args */
495 strcat (arg_buf, " "); /* 1 */
496 strcat (arg_buf, args);
498 argv = buildargv (arg_buf);
500 error ("Insufficient memory available to allocate simulator arg list.");
501 make_cleanup_freeargv (argv);
504 gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
506 if (gdbsim_desc == 0)
507 error ("unable to create simulator instance");
509 push_target (&gdbsim_ops);
510 target_fetch_registers (-1);
511 printf_filtered ("Connected to the simulator.\n");
514 /* Does whatever cleanup is required for a target that we are no longer
515 going to be calling. Argument says whether we are quitting gdb and
516 should not get hung in case of errors, or whether we want a clean
517 termination even if it takes a while. This routine is automatically
518 always called just before a routine is popped off the target stack.
519 Closing file descriptors and freeing memory are typical things it should
521 /* Close out all files and local state before this target loses control. */
524 gdbsim_close (int quitting)
527 printf_filtered ("gdbsim_close: quitting %d\n", quitting);
531 if (gdbsim_desc != NULL)
533 sim_close (gdbsim_desc, quitting);
538 generic_mourn_inferior ();
541 /* Takes a program previously attached to and detaches it.
542 The program may resume execution (some targets do, some don't) and will
543 no longer stop on signals, etc. We better not have left any breakpoints
544 in the program or it'll die when it hits one. ARGS is arguments
545 typed by the user (e.g. a signal to send the process). FROM_TTY
546 says whether to be verbose or not. */
547 /* Terminate the open connection to the remote debugger.
548 Use this when you want to detach and do something else with your gdb. */
551 gdbsim_detach (char *args, int from_tty)
554 printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
556 pop_target (); /* calls gdbsim_close to do the real work */
558 printf_filtered ("Ending simulator %s debugging\n", target_shortname);
561 /* Resume execution of the target process. STEP says whether to single-step
562 or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
563 to the target, or zero for no signal. */
565 static enum target_signal resume_siggnal;
566 static int resume_step;
569 gdbsim_resume (int pid, int step, enum target_signal siggnal)
571 if (inferior_pid != 42)
572 error ("The program is not being run.");
575 printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
577 resume_siggnal = siggnal;
581 /* Notify the simulator of an asynchronous request to stop.
583 The simulator shall ensure that the stop request is eventually
584 delivered to the simulator. If the call is made while the
585 simulator is not running then the stop request is processed when
586 the simulator is next resumed.
588 For simulators that do not support this operation, just abort */
593 if (!sim_stop (gdbsim_desc))
599 /* GDB version of os_poll_quit callback.
600 Taken from gdb/util.c - should be in a library */
603 gdb_os_poll_quit (host_callback *p)
605 if (ui_loop_hook != NULL)
609 if (quit_flag) /* gdb's idea of quit */
611 quit_flag = 0; /* we've stolen it */
614 else if (immediate_quit)
621 /* Wait for inferior process to do something. Return pid of child,
622 or -1 in case of error; store status through argument pointer STATUS,
623 just as `wait' would. */
626 gdbsim_cntrl_c (int signo)
632 gdbsim_wait (int pid, struct target_waitstatus *status)
634 static RETSIGTYPE (*prev_sigint) ();
636 enum sim_stop reason = sim_running;
639 printf_filtered ("gdbsim_wait\n");
641 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
643 struct sigaction sa, osa;
644 sa.sa_handler = gdbsim_cntrl_c;
645 sigemptyset (&sa.sa_mask);
647 sigaction (SIGINT, &sa, &osa);
648 prev_sigint = osa.sa_handler;
651 prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
653 sim_resume (gdbsim_desc, resume_step,
654 target_signal_to_host (resume_siggnal));
655 signal (SIGINT, prev_sigint);
658 sim_stop_reason (gdbsim_desc, &reason, &sigrc);
663 status->kind = TARGET_WAITKIND_EXITED;
664 status->value.integer = sigrc;
675 status->kind = TARGET_WAITKIND_STOPPED;
676 /* The signal in sigrc is a host signal. That probably
678 status->value.sig = target_signal_from_host (sigrc);
683 status->kind = TARGET_WAITKIND_SIGNALLED;
684 /* The signal in sigrc is a host signal. That probably
686 status->value.sig = target_signal_from_host (sigrc);
690 /* FIXME: Is this correct? */
697 /* Get ready to modify the registers array. On machines which store
698 individual registers, this doesn't need to do anything. On machines
699 which store all the registers in one fell swoop, this makes sure
700 that registers contains all the registers from the program being
704 gdbsim_prepare_to_store (void)
706 /* Do nothing, since we can store individual regs */
710 gdbsim_xfer_inferior_memory (memaddr, myaddr, len, write, target)
715 struct target_ops *target; /* ignored */
718 error ("No program loaded.");
722 /* FIXME: Send to something other than STDOUT? */
723 printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x");
724 gdb_print_host_address (myaddr, gdb_stdout);
725 printf_filtered (", memaddr 0x%s, len %d, write %d\n",
726 paddr_nz (memaddr), len, write);
727 if (sr_get_debug () && write)
728 dump_mem (myaddr, len);
733 len = sim_write (gdbsim_desc, memaddr, myaddr, len);
737 len = sim_read (gdbsim_desc, memaddr, myaddr, len);
738 if (sr_get_debug () && len > 0)
739 dump_mem (myaddr, len);
745 gdbsim_files_info (struct target_ops *target)
747 char *file = "nothing";
750 file = bfd_get_filename (exec_bfd);
753 printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
757 printf_filtered ("\tAttached to %s running program %s\n",
758 target_shortname, file);
759 sim_info (gdbsim_desc, 0);
763 /* Clear the simulator's notion of what the break points are. */
766 gdbsim_mourn_inferior (void)
769 printf_filtered ("gdbsim_mourn_inferior:\n");
771 remove_breakpoints ();
772 generic_mourn_inferior ();
776 gdbsim_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
778 #ifdef SIM_HAS_BREAKPOINTS
781 retcode = sim_set_breakpoint (gdbsim_desc, addr);
787 case SIM_RC_INSUFFICIENT_RESOURCES:
793 return memory_insert_breakpoint (addr, contents_cache);
798 gdbsim_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
800 #ifdef SIM_HAS_BREAKPOINTS
803 retcode = sim_clear_breakpoint (gdbsim_desc, addr);
808 case SIM_RC_UNKNOWN_BREAKPOINT:
810 case SIM_RC_INSUFFICIENT_RESOURCES:
816 return memory_remove_breakpoint (addr, contents_cache);
820 /* Pass the command argument through to the simulator verbatim. The
821 simulator must do any command interpretation work. */
824 simulator_command (char *args, int from_tty)
826 if (gdbsim_desc == NULL)
829 /* PREVIOUSLY: The user may give a command before the simulator
830 is opened. [...] (??? assuming of course one wishes to
831 continue to allow commands to be sent to unopened simulators,
832 which isn't entirely unreasonable). */
834 /* The simulator is a builtin abstraction of a remote target.
835 Consistent with that model, access to the simulator, via sim
836 commands, is restricted to the period when the channel to the
837 simulator is open. */
839 error ("Not connected to the simulator target");
842 sim_do_command (gdbsim_desc, args);
844 /* Invalidate the register cache, in case the simulator command does
846 registers_changed ();
849 /* Define the target subroutine names */
851 struct target_ops gdbsim_ops;
854 init_gdbsim_ops (void)
856 gdbsim_ops.to_shortname = "sim";
857 gdbsim_ops.to_longname = "simulator";
858 gdbsim_ops.to_doc = "Use the compiled-in simulator.";
859 gdbsim_ops.to_open = gdbsim_open;
860 gdbsim_ops.to_close = gdbsim_close;
861 gdbsim_ops.to_attach = NULL;
862 gdbsim_ops.to_post_attach = NULL;
863 gdbsim_ops.to_require_attach = NULL;
864 gdbsim_ops.to_detach = gdbsim_detach;
865 gdbsim_ops.to_require_detach = NULL;
866 gdbsim_ops.to_resume = gdbsim_resume;
867 gdbsim_ops.to_wait = gdbsim_wait;
868 gdbsim_ops.to_post_wait = NULL;
869 gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
870 gdbsim_ops.to_store_registers = gdbsim_store_register;
871 gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
872 gdbsim_ops.to_xfer_memory = gdbsim_xfer_inferior_memory;
873 gdbsim_ops.to_files_info = gdbsim_files_info;
874 gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
875 gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
876 gdbsim_ops.to_terminal_init = NULL;
877 gdbsim_ops.to_terminal_inferior = NULL;
878 gdbsim_ops.to_terminal_ours_for_output = NULL;
879 gdbsim_ops.to_terminal_ours = NULL;
880 gdbsim_ops.to_terminal_info = NULL;
881 gdbsim_ops.to_kill = gdbsim_kill;
882 gdbsim_ops.to_load = gdbsim_load;
883 gdbsim_ops.to_lookup_symbol = NULL;
884 gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
885 gdbsim_ops.to_post_startup_inferior = NULL;
886 gdbsim_ops.to_acknowledge_created_inferior = NULL;
887 gdbsim_ops.to_clone_and_follow_inferior = NULL;
888 gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
889 gdbsim_ops.to_insert_fork_catchpoint = NULL;
890 gdbsim_ops.to_remove_fork_catchpoint = NULL;
891 gdbsim_ops.to_insert_vfork_catchpoint = NULL;
892 gdbsim_ops.to_remove_vfork_catchpoint = NULL;
893 gdbsim_ops.to_has_forked = NULL;
894 gdbsim_ops.to_has_vforked = NULL;
895 gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
896 gdbsim_ops.to_post_follow_vfork = NULL;
897 gdbsim_ops.to_insert_exec_catchpoint = NULL;
898 gdbsim_ops.to_remove_exec_catchpoint = NULL;
899 gdbsim_ops.to_has_execd = NULL;
900 gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
901 gdbsim_ops.to_has_exited = NULL;
902 gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
903 gdbsim_ops.to_can_run = 0;
904 gdbsim_ops.to_notice_signals = 0;
905 gdbsim_ops.to_thread_alive = 0;
906 gdbsim_ops.to_stop = gdbsim_stop;
907 gdbsim_ops.to_pid_to_exec_file = NULL;
908 gdbsim_ops.to_core_file_to_sym_file = NULL;
909 gdbsim_ops.to_stratum = process_stratum;
910 gdbsim_ops.DONT_USE = NULL;
911 gdbsim_ops.to_has_all_memory = 1;
912 gdbsim_ops.to_has_memory = 1;
913 gdbsim_ops.to_has_stack = 1;
914 gdbsim_ops.to_has_registers = 1;
915 gdbsim_ops.to_has_execution = 1;
916 gdbsim_ops.to_sections = NULL;
917 gdbsim_ops.to_sections_end = NULL;
918 gdbsim_ops.to_magic = OPS_MAGIC;
920 #ifdef TARGET_REDEFINE_DEFAULT_OPS
921 TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
926 _initialize_remote_sim (void)
929 add_target (&gdbsim_ops);
931 add_com ("sim <command>", class_obscure, simulator_command,
932 "Send a command to the simulator.");