1 /* Generic remote debugging interface for simulators.
3 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002 Free Software Foundation, Inc.
6 Contributed by Cygnus Support.
7 Steve Chamberlain (sac@cygnus.com).
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
29 #include "gdb_string.h"
39 #include "remote-sim.h"
40 #include "remote-utils.h"
43 #include "gdb_assert.h"
44 #include "sim-regno.h"
48 extern void _initialize_remote_sim (void);
50 extern int (*ui_loop_hook) (int signo);
52 static void dump_mem (char *buf, int len);
54 static void init_callbacks (void);
56 static void end_callbacks (void);
58 static int gdb_os_write_stdout (host_callback *, const char *, int);
60 static void gdb_os_flush_stdout (host_callback *);
62 static int gdb_os_write_stderr (host_callback *, const char *, int);
64 static void gdb_os_flush_stderr (host_callback *);
66 static int gdb_os_poll_quit (host_callback *);
68 /* printf_filtered is depreciated */
69 static void gdb_os_printf_filtered (host_callback *, const char *, ...);
71 static void gdb_os_vprintf_filtered (host_callback *, const char *, va_list);
73 static void gdb_os_evprintf_filtered (host_callback *, const char *, va_list);
75 static void gdb_os_error (host_callback *, const char *, ...);
77 static void gdbsim_fetch_register (int regno);
79 static void gdbsim_store_register (int regno);
81 static void gdbsim_kill (void);
83 static void gdbsim_load (char *prog, int fromtty);
85 static void gdbsim_create_inferior (char *exec_file, char *args, char **env);
87 static void gdbsim_open (char *args, int from_tty);
89 static void gdbsim_close (int quitting);
91 static void gdbsim_detach (char *args, int from_tty);
93 static void gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal);
95 static ptid_t gdbsim_wait (ptid_t ptid, struct target_waitstatus *status);
97 static void gdbsim_prepare_to_store (void);
99 static int gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr,
101 struct mem_attrib *attrib,
102 struct target_ops *target);
104 static void gdbsim_files_info (struct target_ops *target);
106 static void gdbsim_mourn_inferior (void);
108 static void gdbsim_stop (void);
110 void simulator_command (char *args, int from_tty);
112 /* Naming convention:
114 sim_* are the interface to the simulator (see remote-sim.h).
115 gdbsim_* are stuff which is internal to gdb. */
117 /* Forward data declarations */
118 extern struct target_ops gdbsim_ops;
120 static int program_loaded = 0;
122 /* We must keep track of whether the simulator has been opened or not because
123 GDB can call a target's close routine twice, but sim_close doesn't allow
124 this. We also need to record the result of sim_open so we can pass it
125 back to the other sim_foo routines. */
126 static SIM_DESC gdbsim_desc = 0;
129 dump_mem (char *buf, int len)
133 if (len == 8 || len == 4)
136 memcpy (l, buf, len);
137 printf_filtered ("\t0x%lx", l[0]);
139 printf_filtered (" 0x%lx", l[1]);
140 printf_filtered ("\n");
145 printf_filtered ("\t");
146 for (i = 0; i < len; i++)
147 printf_filtered ("0x%x ", buf[i]);
148 printf_filtered ("\n");
153 static host_callback gdb_callback;
154 static int callbacks_initialized = 0;
156 /* Initialize gdb_callback. */
159 init_callbacks (void)
161 if (!callbacks_initialized)
163 gdb_callback = default_callback;
164 gdb_callback.init (&gdb_callback);
165 gdb_callback.write_stdout = gdb_os_write_stdout;
166 gdb_callback.flush_stdout = gdb_os_flush_stdout;
167 gdb_callback.write_stderr = gdb_os_write_stderr;
168 gdb_callback.flush_stderr = gdb_os_flush_stderr;
169 gdb_callback.printf_filtered = gdb_os_printf_filtered;
170 gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
171 gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
172 gdb_callback.error = gdb_os_error;
173 gdb_callback.poll_quit = gdb_os_poll_quit;
174 gdb_callback.magic = HOST_CALLBACK_MAGIC;
175 callbacks_initialized = 1;
179 /* Release callbacks (free resources used by them). */
184 if (callbacks_initialized)
186 gdb_callback.shutdown (&gdb_callback);
187 callbacks_initialized = 0;
191 /* GDB version of os_write_stdout callback. */
194 gdb_os_write_stdout (host_callback *p, const char *buf, int len)
199 ui_file_write (gdb_stdtarg, buf, len);
203 /* GDB version of os_flush_stdout callback. */
206 gdb_os_flush_stdout (host_callback *p)
208 gdb_flush (gdb_stdtarg);
211 /* GDB version of os_write_stderr callback. */
214 gdb_os_write_stderr (host_callback *p, const char *buf, int len)
219 for (i = 0; i < len; i++)
223 fputs_unfiltered (b, gdb_stdtarg);
228 /* GDB version of os_flush_stderr callback. */
231 gdb_os_flush_stderr (host_callback *p)
233 gdb_flush (gdb_stderr);
236 /* GDB version of printf_filtered callback. */
239 gdb_os_printf_filtered (host_callback * p, const char *format,...)
242 va_start (args, format);
244 vfprintf_filtered (gdb_stdout, format, args);
249 /* GDB version of error vprintf_filtered. */
252 gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
254 vfprintf_filtered (gdb_stdout, format, ap);
257 /* GDB version of error evprintf_filtered. */
260 gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
262 vfprintf_filtered (gdb_stderr, format, ap);
265 /* GDB version of error callback. */
268 gdb_os_error (host_callback * p, const char *format,...)
275 va_start (args, format);
276 verror (format, args);
282 legacy_register_sim_regno (int regnum)
284 /* Only makes sense to supply raw registers. */
285 gdb_assert (regnum >= 0 && regnum < NUM_REGS);
286 /* NOTE: cagney/2002-05-13: The old code did it this way and it is
287 suspected that some GDB/SIM combinations may rely on this
288 behavour. The default should be one2one_register_sim_regno
290 if (REGISTER_NAME (regnum) != NULL
291 && REGISTER_NAME (regnum)[0] != '\0')
294 return LEGACY_SIM_REGNO_IGNORE;
298 one2one_register_sim_regno (int regnum)
300 /* Only makes sense to supply raw registers. */
301 gdb_assert (regnum >= 0 && regnum < NUM_REGS);
306 gdbsim_fetch_register (int regno)
310 for (regno = 0; regno < NUM_REGS; regno++)
311 gdbsim_fetch_register (regno);
315 switch (REGISTER_SIM_REGNO (regno))
317 case LEGACY_SIM_REGNO_IGNORE:
319 case SIM_REGNO_DOES_NOT_EXIST:
321 /* For moment treat a `does not exist' register the same way
322 as an ``unavailable'' register. */
323 char *buf = alloca (MAX_REGISTER_RAW_SIZE);
325 memset (buf, 0, MAX_REGISTER_RAW_SIZE);
326 supply_register (regno, buf);
327 set_register_cached (regno, -1);
332 static int warn_user = 1;
333 char *buf = alloca (MAX_REGISTER_RAW_SIZE);
335 gdb_assert (regno >= 0 && regno < NUM_REGS);
336 memset (buf, 0, MAX_REGISTER_RAW_SIZE);
337 nr_bytes = sim_fetch_register (gdbsim_desc,
338 REGISTER_SIM_REGNO (regno),
339 buf, REGISTER_RAW_SIZE (regno));
340 if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno) && warn_user)
342 fprintf_unfiltered (gdb_stderr,
343 "Size of register %s (%d/%d) incorrect (%d instead of %d))",
344 REGISTER_NAME (regno),
345 regno, REGISTER_SIM_REGNO (regno),
346 nr_bytes, REGISTER_RAW_SIZE (regno));
349 /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
350 indicatingthat GDB and the SIM have different ideas about
351 which registers are fetchable. */
352 /* Else if (nr_bytes < 0): an old simulator, that doesn't
353 think to return the register size. Just assume all is ok. */
354 supply_register (regno, buf);
357 printf_filtered ("gdbsim_fetch_register: %d", regno);
358 /* FIXME: We could print something more intelligible. */
359 dump_mem (buf, REGISTER_RAW_SIZE (regno));
368 gdbsim_store_register (int regno)
372 for (regno = 0; regno < NUM_REGS; regno++)
373 gdbsim_store_register (regno);
376 else if (REGISTER_SIM_REGNO (regno) >= 0)
378 char tmp[MAX_REGISTER_RAW_SIZE];
380 read_register_gen (regno, tmp);
381 nr_bytes = sim_store_register (gdbsim_desc,
382 REGISTER_SIM_REGNO (regno),
383 tmp, REGISTER_RAW_SIZE (regno));
384 if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
385 internal_error (__FILE__, __LINE__,
386 "Register size different to expected");
387 /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
388 indicatingthat GDB and the SIM have different ideas about
389 which registers are fetchable. */
392 printf_filtered ("gdbsim_store_register: %d", regno);
393 /* FIXME: We could print something more intelligible. */
394 dump_mem (tmp, REGISTER_RAW_SIZE (regno));
399 /* Kill the running program. This may involve closing any open files
400 and releasing other resources acquired by the simulated program. */
406 printf_filtered ("gdbsim_kill\n");
408 /* There is no need to `kill' running simulator - the simulator is
410 inferior_ptid = null_ptid;
413 /* Load an executable file into the target process. This is expected to
414 not only bring new code into the target process, but also to update
415 GDB's symbol tables to match. */
418 gdbsim_load (char *prog, int fromtty)
421 printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
423 inferior_ptid = null_ptid;
425 /* FIXME: We will print two messages on error.
426 Need error to either not print anything if passed NULL or need
427 another routine that doesn't take any arguments. */
428 if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
429 error ("unable to load program");
431 /* FIXME: If a load command should reset the targets registers then
432 a call to sim_create_inferior() should go here. */
438 /* Start an inferior process and set inferior_ptid to its pid.
439 EXEC_FILE is the file to run.
440 ARGS is a string containing the arguments to the program.
441 ENV is the environment vector to pass. Errors reported with error().
442 On VxWorks and various standalone systems, we ignore exec_file. */
443 /* This is called not only when we first attach, but also when the
444 user types "run" after having attached. */
447 gdbsim_create_inferior (char *exec_file, char *args, char **env)
450 char *arg_buf, **argv;
452 if (exec_file == 0 || exec_bfd == 0)
453 warning ("No executable file specified.");
455 warning ("No program loaded.");
458 printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
459 (exec_file ? exec_file : "(NULL)"),
463 remove_breakpoints ();
464 init_wait_for_inferior ();
466 if (exec_file != NULL)
468 len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
469 arg_buf = (char *) alloca (len);
471 strcat (arg_buf, exec_file);
472 strcat (arg_buf, " ");
473 strcat (arg_buf, args);
474 argv = buildargv (arg_buf);
475 make_cleanup_freeargv (argv);
479 sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
481 inferior_ptid = pid_to_ptid (42);
482 insert_breakpoints (); /* Needed to get correct instruction in cache */
484 clear_proceed_status ();
486 /* NB: Entry point already set by sim_create_inferior. */
487 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
490 /* The open routine takes the rest of the parameters from the command,
491 and (if successful) pushes a new target onto the stack.
492 Targets should supply this routine, if only to provide an error message. */
493 /* Called when selecting the simulator. EG: (gdb) target sim name. */
496 gdbsim_open (char *args, int from_tty)
503 printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
505 /* Remove current simulator if one exists. Only do this if the simulator
506 has been opened because sim_close requires it.
507 This is important because the call to push_target below will cause
508 sim_close to be called if the simulator is already open, but push_target
509 is called after sim_open! We can't move the call to push_target before
510 the call to sim_open because sim_open may invoke `error'. */
511 if (gdbsim_desc != NULL)
512 unpush_target (&gdbsim_ops);
514 len = (7 + 1 /* gdbsim */
515 + strlen (" -E little")
516 + strlen (" --architecture=xxxxxxxxxx")
517 + (args ? strlen (args) : 0)
519 arg_buf = (char *) alloca (len);
520 strcpy (arg_buf, "gdbsim"); /* 7 */
521 /* Specify the byte order for the target when it is both selectable
522 and explicitly specified by the user (not auto detected). */
523 if (!TARGET_BYTE_ORDER_AUTO)
525 switch (TARGET_BYTE_ORDER)
528 strcat (arg_buf, " -E big");
530 case BFD_ENDIAN_LITTLE:
531 strcat (arg_buf, " -E little");
534 internal_error (__FILE__, __LINE__,
535 "Value of TARGET_BYTE_ORDER unknown");
538 /* Specify the architecture of the target when it has been
539 explicitly specified */
540 if (!TARGET_ARCHITECTURE_AUTO)
542 strcat (arg_buf, " --architecture=");
543 strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
545 /* finally, any explicit args */
548 strcat (arg_buf, " "); /* 1 */
549 strcat (arg_buf, args);
551 argv = buildargv (arg_buf);
553 error ("Insufficient memory available to allocate simulator arg list.");
554 make_cleanup_freeargv (argv);
557 gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
559 if (gdbsim_desc == 0)
560 error ("unable to create simulator instance");
562 push_target (&gdbsim_ops);
563 target_fetch_registers (-1);
564 printf_filtered ("Connected to the simulator.\n");
567 /* Does whatever cleanup is required for a target that we are no longer
568 going to be calling. Argument says whether we are quitting gdb and
569 should not get hung in case of errors, or whether we want a clean
570 termination even if it takes a while. This routine is automatically
571 always called just before a routine is popped off the target stack.
572 Closing file descriptors and freeing memory are typical things it should
574 /* Close out all files and local state before this target loses control. */
577 gdbsim_close (int quitting)
580 printf_filtered ("gdbsim_close: quitting %d\n", quitting);
584 if (gdbsim_desc != NULL)
586 sim_close (gdbsim_desc, quitting);
591 generic_mourn_inferior ();
594 /* Takes a program previously attached to and detaches it.
595 The program may resume execution (some targets do, some don't) and will
596 no longer stop on signals, etc. We better not have left any breakpoints
597 in the program or it'll die when it hits one. ARGS is arguments
598 typed by the user (e.g. a signal to send the process). FROM_TTY
599 says whether to be verbose or not. */
600 /* Terminate the open connection to the remote debugger.
601 Use this when you want to detach and do something else with your gdb. */
604 gdbsim_detach (char *args, int from_tty)
607 printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
609 pop_target (); /* calls gdbsim_close to do the real work */
611 printf_filtered ("Ending simulator %s debugging\n", target_shortname);
614 /* Resume execution of the target process. STEP says whether to single-step
615 or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
616 to the target, or zero for no signal. */
618 static enum target_signal resume_siggnal;
619 static int resume_step;
622 gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal)
624 if (PIDGET (inferior_ptid) != 42)
625 error ("The program is not being run.");
628 printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
630 resume_siggnal = siggnal;
634 /* Notify the simulator of an asynchronous request to stop.
636 The simulator shall ensure that the stop request is eventually
637 delivered to the simulator. If the call is made while the
638 simulator is not running then the stop request is processed when
639 the simulator is next resumed.
641 For simulators that do not support this operation, just abort */
646 if (!sim_stop (gdbsim_desc))
652 /* GDB version of os_poll_quit callback.
653 Taken from gdb/util.c - should be in a library */
656 gdb_os_poll_quit (host_callback *p)
658 if (ui_loop_hook != NULL)
661 if (quit_flag) /* gdb's idea of quit */
663 quit_flag = 0; /* we've stolen it */
666 else if (immediate_quit)
673 /* Wait for inferior process to do something. Return pid of child,
674 or -1 in case of error; store status through argument pointer STATUS,
675 just as `wait' would. */
678 gdbsim_cntrl_c (int signo)
684 gdbsim_wait (ptid_t ptid, struct target_waitstatus *status)
686 static RETSIGTYPE (*prev_sigint) ();
688 enum sim_stop reason = sim_running;
691 printf_filtered ("gdbsim_wait\n");
693 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
695 struct sigaction sa, osa;
696 sa.sa_handler = gdbsim_cntrl_c;
697 sigemptyset (&sa.sa_mask);
699 sigaction (SIGINT, &sa, &osa);
700 prev_sigint = osa.sa_handler;
703 prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
705 sim_resume (gdbsim_desc, resume_step,
706 target_signal_to_host (resume_siggnal));
707 signal (SIGINT, prev_sigint);
710 sim_stop_reason (gdbsim_desc, &reason, &sigrc);
715 status->kind = TARGET_WAITKIND_EXITED;
716 status->value.integer = sigrc;
727 status->kind = TARGET_WAITKIND_STOPPED;
728 /* The signal in sigrc is a host signal. That probably
730 status->value.sig = target_signal_from_host (sigrc);
735 status->kind = TARGET_WAITKIND_SIGNALLED;
736 /* The signal in sigrc is a host signal. That probably
738 status->value.sig = target_signal_from_host (sigrc);
742 /* FIXME: Is this correct? */
746 return inferior_ptid;
749 /* Get ready to modify the registers array. On machines which store
750 individual registers, this doesn't need to do anything. On machines
751 which store all the registers in one fell swoop, this makes sure
752 that registers contains all the registers from the program being
756 gdbsim_prepare_to_store (void)
758 /* Do nothing, since we can store individual regs */
761 /* Transfer LEN bytes between GDB address MYADDR and target address
762 MEMADDR. If WRITE is non-zero, transfer them to the target,
763 otherwise transfer them from the target. TARGET is unused.
765 Returns the number of bytes transferred. */
768 gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len,
769 int write, struct mem_attrib *attrib,
770 struct target_ops *target)
773 error ("No program loaded.");
777 /* FIXME: Send to something other than STDOUT? */
778 printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x");
779 gdb_print_host_address (myaddr, gdb_stdout);
780 printf_filtered (", memaddr 0x%s, len %d, write %d\n",
781 paddr_nz (memaddr), len, write);
782 if (sr_get_debug () && write)
783 dump_mem (myaddr, len);
788 len = sim_write (gdbsim_desc, memaddr, myaddr, len);
792 len = sim_read (gdbsim_desc, memaddr, myaddr, len);
793 if (sr_get_debug () && len > 0)
794 dump_mem (myaddr, len);
800 gdbsim_files_info (struct target_ops *target)
802 char *file = "nothing";
805 file = bfd_get_filename (exec_bfd);
808 printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
812 printf_filtered ("\tAttached to %s running program %s\n",
813 target_shortname, file);
814 sim_info (gdbsim_desc, 0);
818 /* Clear the simulator's notion of what the break points are. */
821 gdbsim_mourn_inferior (void)
824 printf_filtered ("gdbsim_mourn_inferior:\n");
826 remove_breakpoints ();
827 generic_mourn_inferior ();
831 gdbsim_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
833 #ifdef SIM_HAS_BREAKPOINTS
836 retcode = sim_set_breakpoint (gdbsim_desc, addr);
842 case SIM_RC_INSUFFICIENT_RESOURCES:
848 return memory_insert_breakpoint (addr, contents_cache);
853 gdbsim_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
855 #ifdef SIM_HAS_BREAKPOINTS
858 retcode = sim_clear_breakpoint (gdbsim_desc, addr);
863 case SIM_RC_UNKNOWN_BREAKPOINT:
865 case SIM_RC_INSUFFICIENT_RESOURCES:
871 return memory_remove_breakpoint (addr, contents_cache);
875 /* Pass the command argument through to the simulator verbatim. The
876 simulator must do any command interpretation work. */
879 simulator_command (char *args, int from_tty)
881 if (gdbsim_desc == NULL)
884 /* PREVIOUSLY: The user may give a command before the simulator
885 is opened. [...] (??? assuming of course one wishes to
886 continue to allow commands to be sent to unopened simulators,
887 which isn't entirely unreasonable). */
889 /* The simulator is a builtin abstraction of a remote target.
890 Consistent with that model, access to the simulator, via sim
891 commands, is restricted to the period when the channel to the
892 simulator is open. */
894 error ("Not connected to the simulator target");
897 sim_do_command (gdbsim_desc, args);
899 /* Invalidate the register cache, in case the simulator command does
901 registers_changed ();
904 /* Define the target subroutine names */
906 struct target_ops gdbsim_ops;
909 init_gdbsim_ops (void)
911 gdbsim_ops.to_shortname = "sim";
912 gdbsim_ops.to_longname = "simulator";
913 gdbsim_ops.to_doc = "Use the compiled-in simulator.";
914 gdbsim_ops.to_open = gdbsim_open;
915 gdbsim_ops.to_close = gdbsim_close;
916 gdbsim_ops.to_attach = NULL;
917 gdbsim_ops.to_post_attach = NULL;
918 gdbsim_ops.to_require_attach = NULL;
919 gdbsim_ops.to_detach = gdbsim_detach;
920 gdbsim_ops.to_require_detach = NULL;
921 gdbsim_ops.to_resume = gdbsim_resume;
922 gdbsim_ops.to_wait = gdbsim_wait;
923 gdbsim_ops.to_post_wait = NULL;
924 gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
925 gdbsim_ops.to_store_registers = gdbsim_store_register;
926 gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
927 gdbsim_ops.to_xfer_memory = gdbsim_xfer_inferior_memory;
928 gdbsim_ops.to_files_info = gdbsim_files_info;
929 gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
930 gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
931 gdbsim_ops.to_terminal_init = NULL;
932 gdbsim_ops.to_terminal_inferior = NULL;
933 gdbsim_ops.to_terminal_ours_for_output = NULL;
934 gdbsim_ops.to_terminal_ours = NULL;
935 gdbsim_ops.to_terminal_info = NULL;
936 gdbsim_ops.to_kill = gdbsim_kill;
937 gdbsim_ops.to_load = gdbsim_load;
938 gdbsim_ops.to_lookup_symbol = NULL;
939 gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
940 gdbsim_ops.to_post_startup_inferior = NULL;
941 gdbsim_ops.to_acknowledge_created_inferior = NULL;
942 gdbsim_ops.to_clone_and_follow_inferior = NULL;
943 gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
944 gdbsim_ops.to_insert_fork_catchpoint = NULL;
945 gdbsim_ops.to_remove_fork_catchpoint = NULL;
946 gdbsim_ops.to_insert_vfork_catchpoint = NULL;
947 gdbsim_ops.to_remove_vfork_catchpoint = NULL;
948 gdbsim_ops.to_has_forked = NULL;
949 gdbsim_ops.to_has_vforked = NULL;
950 gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
951 gdbsim_ops.to_post_follow_vfork = NULL;
952 gdbsim_ops.to_insert_exec_catchpoint = NULL;
953 gdbsim_ops.to_remove_exec_catchpoint = NULL;
954 gdbsim_ops.to_has_execd = NULL;
955 gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
956 gdbsim_ops.to_has_exited = NULL;
957 gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
958 gdbsim_ops.to_can_run = 0;
959 gdbsim_ops.to_notice_signals = 0;
960 gdbsim_ops.to_thread_alive = 0;
961 gdbsim_ops.to_stop = gdbsim_stop;
962 gdbsim_ops.to_pid_to_exec_file = NULL;
963 gdbsim_ops.to_stratum = process_stratum;
964 gdbsim_ops.DONT_USE = NULL;
965 gdbsim_ops.to_has_all_memory = 1;
966 gdbsim_ops.to_has_memory = 1;
967 gdbsim_ops.to_has_stack = 1;
968 gdbsim_ops.to_has_registers = 1;
969 gdbsim_ops.to_has_execution = 1;
970 gdbsim_ops.to_sections = NULL;
971 gdbsim_ops.to_sections_end = NULL;
972 gdbsim_ops.to_magic = OPS_MAGIC;
974 #ifdef TARGET_REDEFINE_DEFAULT_OPS
975 TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
980 _initialize_remote_sim (void)
983 add_target (&gdbsim_ops);
985 add_com ("sim <command>", class_obscure, simulator_command,
986 "Send a command to the simulator.");