1 /* Generic remote debugging interface for simulators.
3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 2004, 2005, 2006, 2007, 2008, 2009 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 3 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, see <http://www.gnu.org/licenses/>. */
27 #include "gdb_string.h"
36 #include "gdb/callback.h"
37 #include "gdb/remote-sim.h"
40 #include "gdb_assert.h"
41 #include "sim-regno.h"
42 #include "arch-utils.h"
43 #include "readline/readline.h"
44 #include "gdbthread.h"
48 extern void _initialize_remote_sim (void);
50 static void dump_mem (char *buf, int len);
52 static void init_callbacks (void);
54 static void end_callbacks (void);
56 static int gdb_os_write_stdout (host_callback *, const char *, int);
58 static void gdb_os_flush_stdout (host_callback *);
60 static int gdb_os_write_stderr (host_callback *, const char *, int);
62 static void gdb_os_flush_stderr (host_callback *);
64 static int gdb_os_poll_quit (host_callback *);
66 /* printf_filtered is depreciated */
67 static void gdb_os_printf_filtered (host_callback *, const char *, ...);
69 static void gdb_os_vprintf_filtered (host_callback *, const char *, va_list);
71 static void gdb_os_evprintf_filtered (host_callback *, const char *, va_list);
73 static void gdb_os_error (host_callback *, const char *, ...) ATTR_NORETURN;
75 static void gdbsim_kill (void);
77 static void gdbsim_load (char *prog, int fromtty);
79 static void gdbsim_open (char *args, int from_tty);
81 static void gdbsim_close (int quitting);
83 static void gdbsim_detach (struct target_ops *ops, char *args, int from_tty);
85 static void gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal);
87 static void gdbsim_prepare_to_store (struct regcache *regcache);
89 static void gdbsim_files_info (struct target_ops *target);
91 static void gdbsim_mourn_inferior (struct target_ops *target);
93 static void gdbsim_stop (ptid_t ptid);
95 void simulator_command (char *args, int from_tty);
99 sim_* are the interface to the simulator (see remote-sim.h).
100 gdbsim_* are stuff which is internal to gdb. */
102 /* Forward data declarations */
103 extern struct target_ops gdbsim_ops;
105 static int program_loaded = 0;
107 /* We must keep track of whether the simulator has been opened or not because
108 GDB can call a target's close routine twice, but sim_close doesn't allow
109 this. We also need to record the result of sim_open so we can pass it
110 back to the other sim_foo routines. */
111 static SIM_DESC gdbsim_desc = 0;
113 /* This is the ptid we use while we're connected to the simulator.
114 Its value is arbitrary, as the simulator target don't have a notion
115 or processes or threads, but we need something non-null to place in
117 static ptid_t remote_sim_ptid;
120 dump_mem (char *buf, int len)
124 if (len == 8 || len == 4)
127 memcpy (l, buf, len);
128 printf_filtered ("\t0x%lx", l[0]);
130 printf_filtered (" 0x%lx", l[1]);
131 printf_filtered ("\n");
136 printf_filtered ("\t");
137 for (i = 0; i < len; i++)
138 printf_filtered ("0x%x ", buf[i]);
139 printf_filtered ("\n");
144 static host_callback gdb_callback;
145 static int callbacks_initialized = 0;
147 /* Initialize gdb_callback. */
150 init_callbacks (void)
152 if (!callbacks_initialized)
154 gdb_callback = default_callback;
155 gdb_callback.init (&gdb_callback);
156 gdb_callback.write_stdout = gdb_os_write_stdout;
157 gdb_callback.flush_stdout = gdb_os_flush_stdout;
158 gdb_callback.write_stderr = gdb_os_write_stderr;
159 gdb_callback.flush_stderr = gdb_os_flush_stderr;
160 gdb_callback.printf_filtered = gdb_os_printf_filtered;
161 gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
162 gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
163 gdb_callback.error = gdb_os_error;
164 gdb_callback.poll_quit = gdb_os_poll_quit;
165 gdb_callback.magic = HOST_CALLBACK_MAGIC;
166 callbacks_initialized = 1;
170 /* Release callbacks (free resources used by them). */
175 if (callbacks_initialized)
177 gdb_callback.shutdown (&gdb_callback);
178 callbacks_initialized = 0;
182 /* GDB version of os_write_stdout callback. */
185 gdb_os_write_stdout (host_callback *p, const char *buf, int len)
190 ui_file_write (gdb_stdtarg, buf, len);
194 /* GDB version of os_flush_stdout callback. */
197 gdb_os_flush_stdout (host_callback *p)
199 gdb_flush (gdb_stdtarg);
202 /* GDB version of os_write_stderr callback. */
205 gdb_os_write_stderr (host_callback *p, const char *buf, int len)
210 for (i = 0; i < len; i++)
214 fputs_unfiltered (b, gdb_stdtargerr);
219 /* GDB version of os_flush_stderr callback. */
222 gdb_os_flush_stderr (host_callback *p)
224 gdb_flush (gdb_stdtargerr);
227 /* GDB version of printf_filtered callback. */
230 gdb_os_printf_filtered (host_callback * p, const char *format,...)
233 va_start (args, format);
235 vfprintf_filtered (gdb_stdout, format, args);
240 /* GDB version of error vprintf_filtered. */
243 gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
245 vfprintf_filtered (gdb_stdout, format, ap);
248 /* GDB version of error evprintf_filtered. */
251 gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
253 vfprintf_filtered (gdb_stderr, format, ap);
256 /* GDB version of error callback. */
259 gdb_os_error (host_callback * p, const char *format, ...)
262 va_start (args, format);
263 verror (format, args);
268 one2one_register_sim_regno (struct gdbarch *gdbarch, int regnum)
270 /* Only makes sense to supply raw registers. */
271 gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch));
276 gdbsim_fetch_register (struct target_ops *ops,
277 struct regcache *regcache, int regno)
279 struct gdbarch *gdbarch = get_regcache_arch (regcache);
282 for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
283 gdbsim_fetch_register (ops, regcache, regno);
287 switch (gdbarch_register_sim_regno (gdbarch, regno))
289 case LEGACY_SIM_REGNO_IGNORE:
291 case SIM_REGNO_DOES_NOT_EXIST:
293 /* For moment treat a `does not exist' register the same way
294 as an ``unavailable'' register. */
295 char buf[MAX_REGISTER_SIZE];
297 memset (buf, 0, MAX_REGISTER_SIZE);
298 regcache_raw_supply (regcache, regno, buf);
304 static int warn_user = 1;
305 char buf[MAX_REGISTER_SIZE];
307 gdb_assert (regno >= 0 && regno < gdbarch_num_regs (gdbarch));
308 memset (buf, 0, MAX_REGISTER_SIZE);
309 nr_bytes = sim_fetch_register (gdbsim_desc,
310 gdbarch_register_sim_regno
313 register_size (gdbarch, regno));
315 && nr_bytes != register_size (gdbarch, regno) && warn_user)
317 fprintf_unfiltered (gdb_stderr,
318 "Size of register %s (%d/%d) incorrect (%d instead of %d))",
319 gdbarch_register_name (gdbarch, regno),
321 gdbarch_register_sim_regno
323 nr_bytes, register_size (gdbarch, regno));
326 /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
327 indicating that GDB and the SIM have different ideas about
328 which registers are fetchable. */
329 /* Else if (nr_bytes < 0): an old simulator, that doesn't
330 think to return the register size. Just assume all is ok. */
331 regcache_raw_supply (regcache, regno, buf);
334 printf_filtered ("gdbsim_fetch_register: %d", regno);
335 /* FIXME: We could print something more intelligible. */
336 dump_mem (buf, register_size (gdbarch, regno));
345 gdbsim_store_register (struct target_ops *ops,
346 struct regcache *regcache, int regno)
348 struct gdbarch *gdbarch = get_regcache_arch (regcache);
351 for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
352 gdbsim_store_register (ops, regcache, regno);
355 else if (gdbarch_register_sim_regno (gdbarch, regno) >= 0)
357 char tmp[MAX_REGISTER_SIZE];
359 regcache_cooked_read (regcache, regno, tmp);
360 nr_bytes = sim_store_register (gdbsim_desc,
361 gdbarch_register_sim_regno
363 tmp, register_size (gdbarch, regno));
364 if (nr_bytes > 0 && nr_bytes != register_size (gdbarch, regno))
365 internal_error (__FILE__, __LINE__,
366 _("Register size different to expected"));
367 /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
368 indicating that GDB and the SIM have different ideas about
369 which registers are fetchable. */
372 printf_filtered ("gdbsim_store_register: %d", regno);
373 /* FIXME: We could print something more intelligible. */
374 dump_mem (tmp, register_size (gdbarch, regno));
379 /* Kill the running program. This may involve closing any open files
380 and releasing other resources acquired by the simulated program. */
386 printf_filtered ("gdbsim_kill\n");
388 /* There is no need to `kill' running simulator - the simulator is
389 not running. Mourning it is enough. */
390 target_mourn_inferior ();
393 /* Load an executable file into the target process. This is expected to
394 not only bring new code into the target process, but also to update
395 GDB's symbol tables to match. */
398 gdbsim_load (char *args, int fromtty)
404 error_no_arg (_("program to load"));
406 argv = gdb_buildargv (args);
407 make_cleanup_freeargv (argv);
409 prog = tilde_expand (argv[0]);
412 error (_("GDB sim does not yet support a load offset."));
415 printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
417 /* FIXME: We will print two messages on error.
418 Need error to either not print anything if passed NULL or need
419 another routine that doesn't take any arguments. */
420 if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
421 error (_("unable to load program"));
423 /* FIXME: If a load command should reset the targets registers then
424 a call to sim_create_inferior() should go here. */
430 /* Start an inferior process and set inferior_ptid to its pid.
431 EXEC_FILE is the file to run.
432 ARGS is a string containing the arguments to the program.
433 ENV is the environment vector to pass. Errors reported with error().
434 On VxWorks and various standalone systems, we ignore exec_file. */
435 /* This is called not only when we first attach, but also when the
436 user types "run" after having attached. */
439 gdbsim_create_inferior (struct target_ops *target, char *exec_file, char *args,
440 char **env, int from_tty)
443 char *arg_buf, **argv;
445 if (exec_file == 0 || exec_bfd == 0)
446 warning (_("No executable file specified."));
448 warning (_("No program loaded."));
451 printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
452 (exec_file ? exec_file : "(NULL)"),
455 if (ptid_equal (inferior_ptid, remote_sim_ptid))
457 remove_breakpoints ();
458 init_wait_for_inferior ();
460 if (exec_file != NULL)
462 len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
463 arg_buf = (char *) alloca (len);
465 strcat (arg_buf, exec_file);
466 strcat (arg_buf, " ");
467 strcat (arg_buf, args);
468 argv = gdb_buildargv (arg_buf);
469 make_cleanup_freeargv (argv);
473 sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
475 inferior_ptid = remote_sim_ptid;
476 add_inferior_silent (ptid_get_pid (inferior_ptid));
477 add_thread_silent (inferior_ptid);
479 target_mark_running (&gdbsim_ops);
480 insert_breakpoints (); /* Needed to get correct instruction in cache */
482 clear_proceed_status ();
485 /* The open routine takes the rest of the parameters from the command,
486 and (if successful) pushes a new target onto the stack.
487 Targets should supply this routine, if only to provide an error message. */
488 /* Called when selecting the simulator. EG: (gdb) target sim name. */
491 gdbsim_open (char *args, int from_tty)
498 printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
500 /* Remove current simulator if one exists. Only do this if the simulator
501 has been opened because sim_close requires it.
502 This is important because the call to push_target below will cause
503 sim_close to be called if the simulator is already open, but push_target
504 is called after sim_open! We can't move the call to push_target before
505 the call to sim_open because sim_open may invoke `error'. */
506 if (gdbsim_desc != NULL)
507 unpush_target (&gdbsim_ops);
509 len = (7 + 1 /* gdbsim */
510 + strlen (" -E little")
511 + strlen (" --architecture=xxxxxxxxxx")
512 + (args ? strlen (args) : 0)
514 arg_buf = (char *) alloca (len);
515 strcpy (arg_buf, "gdbsim"); /* 7 */
516 /* Specify the byte order for the target when it is explicitly
517 specified by the user (not auto detected). */
518 switch (selected_byte_order ())
521 strcat (arg_buf, " -E big");
523 case BFD_ENDIAN_LITTLE:
524 strcat (arg_buf, " -E little");
526 case BFD_ENDIAN_UNKNOWN:
529 /* Specify the architecture of the target when it has been
530 explicitly specified */
531 if (selected_architecture_name () != NULL)
533 strcat (arg_buf, " --architecture=");
534 strcat (arg_buf, selected_architecture_name ());
536 /* finally, any explicit args */
539 strcat (arg_buf, " "); /* 1 */
540 strcat (arg_buf, args);
542 argv = gdb_buildargv (arg_buf);
543 make_cleanup_freeargv (argv);
546 gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
548 if (gdbsim_desc == 0)
549 error (_("unable to create simulator instance"));
551 push_target (&gdbsim_ops);
552 printf_filtered ("Connected to the simulator.\n");
554 /* There's nothing running after "target sim" or "load"; not until
556 inferior_ptid = null_ptid;
557 target_mark_exited (&gdbsim_ops);
560 /* Does whatever cleanup is required for a target that we are no longer
561 going to be calling. Argument says whether we are quitting gdb and
562 should not get hung in case of errors, or whether we want a clean
563 termination even if it takes a while. This routine is automatically
564 always called just before a routine is popped off the target stack.
565 Closing file descriptors and freeing memory are typical things it should
567 /* Close out all files and local state before this target loses control. */
570 gdbsim_close (int quitting)
573 printf_filtered ("gdbsim_close: quitting %d\n", quitting);
577 if (gdbsim_desc != NULL)
579 sim_close (gdbsim_desc, quitting);
584 generic_mourn_inferior ();
585 delete_thread_silent (remote_sim_ptid);
586 delete_inferior_silent (ptid_get_pid (remote_sim_ptid));
589 /* Takes a program previously attached to and detaches it.
590 The program may resume execution (some targets do, some don't) and will
591 no longer stop on signals, etc. We better not have left any breakpoints
592 in the program or it'll die when it hits one. ARGS is arguments
593 typed by the user (e.g. a signal to send the process). FROM_TTY
594 says whether to be verbose or not. */
595 /* Terminate the open connection to the remote debugger.
596 Use this when you want to detach and do something else with your gdb. */
599 gdbsim_detach (struct target_ops *ops, char *args, int from_tty)
602 printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
604 pop_target (); /* calls gdbsim_close to do the real work */
606 printf_filtered ("Ending simulator %s debugging\n", target_shortname);
609 /* Resume execution of the target process. STEP says whether to single-step
610 or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
611 to the target, or zero for no signal. */
613 static enum target_signal resume_siggnal;
614 static int resume_step;
617 gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal)
619 if (!ptid_equal (inferior_ptid, remote_sim_ptid))
620 error (_("The program is not being run."));
623 printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
625 resume_siggnal = siggnal;
629 /* Notify the simulator of an asynchronous request to stop.
631 The simulator shall ensure that the stop request is eventually
632 delivered to the simulator. If the call is made while the
633 simulator is not running then the stop request is processed when
634 the simulator is next resumed.
636 For simulators that do not support this operation, just abort */
639 gdbsim_stop (ptid_t ptid)
641 if (!sim_stop (gdbsim_desc))
647 /* GDB version of os_poll_quit callback.
648 Taken from gdb/util.c - should be in a library. */
651 gdb_os_poll_quit (host_callback *p)
653 if (deprecated_ui_loop_hook != NULL)
654 deprecated_ui_loop_hook (0);
656 if (quit_flag) /* gdb's idea of quit */
658 quit_flag = 0; /* we've stolen it */
661 else if (immediate_quit)
668 /* Wait for inferior process to do something. Return pid of child,
669 or -1 in case of error; store status through argument pointer STATUS,
670 just as `wait' would. */
673 gdbsim_cntrl_c (int signo)
675 gdbsim_stop (remote_sim_ptid);
679 gdbsim_wait (struct target_ops *ops,
680 ptid_t ptid, struct target_waitstatus *status)
682 static RETSIGTYPE (*prev_sigint) ();
684 enum sim_stop reason = sim_running;
687 printf_filtered ("gdbsim_wait\n");
689 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
691 struct sigaction sa, osa;
692 sa.sa_handler = gdbsim_cntrl_c;
693 sigemptyset (&sa.sa_mask);
695 sigaction (SIGINT, &sa, &osa);
696 prev_sigint = osa.sa_handler;
699 prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
701 sim_resume (gdbsim_desc, resume_step, resume_siggnal);
702 signal (SIGINT, prev_sigint);
705 sim_stop_reason (gdbsim_desc, &reason, &sigrc);
710 status->kind = TARGET_WAITKIND_EXITED;
711 status->value.integer = sigrc;
716 case TARGET_SIGNAL_ABRT:
719 case TARGET_SIGNAL_INT:
720 case TARGET_SIGNAL_TRAP:
722 status->kind = TARGET_WAITKIND_STOPPED;
723 status->value.sig = sigrc;
728 status->kind = TARGET_WAITKIND_SIGNALLED;
729 status->value.sig = sigrc;
733 /* FIXME: Is this correct? */
737 return inferior_ptid;
740 /* Get ready to modify the registers array. On machines which store
741 individual registers, this doesn't need to do anything. On machines
742 which store all the registers in one fell swoop, this makes sure
743 that registers contains all the registers from the program being
747 gdbsim_prepare_to_store (struct regcache *regcache)
749 /* Do nothing, since we can store individual regs */
752 /* Transfer LEN bytes between GDB address MYADDR and target address
753 MEMADDR. If WRITE is non-zero, transfer them to the target,
754 otherwise transfer them from the target. TARGET is unused.
756 Returns the number of bytes transferred. */
759 gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len,
760 int write, struct mem_attrib *attrib,
761 struct target_ops *target)
763 /* If no program is running yet, then ignore the simulator for
764 memory. Pass the request down to the next target, hopefully
766 if (!target_has_execution)
770 error (_("No program loaded."));
774 /* FIXME: Send to something other than STDOUT? */
775 printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x");
776 gdb_print_host_address (myaddr, gdb_stdout);
777 printf_filtered (", memaddr 0x%s, len %d, write %d\n",
778 paddr_nz (memaddr), len, write);
779 if (remote_debug && write)
780 dump_mem (myaddr, len);
785 len = sim_write (gdbsim_desc, memaddr, myaddr, len);
789 len = sim_read (gdbsim_desc, memaddr, myaddr, len);
790 if (remote_debug && len > 0)
791 dump_mem (myaddr, len);
797 gdbsim_files_info (struct target_ops *target)
799 char *file = "nothing";
802 file = bfd_get_filename (exec_bfd);
805 printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
809 printf_filtered ("\tAttached to %s running program %s\n",
810 target_shortname, file);
811 sim_info (gdbsim_desc, 0);
815 /* Clear the simulator's notion of what the break points are. */
818 gdbsim_mourn_inferior (struct target_ops *target)
821 printf_filtered ("gdbsim_mourn_inferior:\n");
823 remove_breakpoints ();
824 target_mark_exited (target);
825 generic_mourn_inferior ();
826 delete_thread_silent (remote_sim_ptid);
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 /* Check to see if a thread is still alive. */
861 gdbsim_thread_alive (struct target_ops *ops, ptid_t ptid)
863 if (ptid_equal (ptid, remote_sim_ptid))
864 /* The simulators' task is always alive. */
870 /* Convert a thread ID to a string. Returns the string in a static
874 gdbsim_pid_to_str (struct target_ops *ops, ptid_t ptid)
878 if (ptid_equal (remote_sim_ptid, ptid))
880 xsnprintf (buf, sizeof buf, "Thread <main>");
884 return normal_pid_to_str (ptid);
887 /* Define the target subroutine names */
889 struct target_ops gdbsim_ops;
892 init_gdbsim_ops (void)
894 gdbsim_ops.to_shortname = "sim";
895 gdbsim_ops.to_longname = "simulator";
896 gdbsim_ops.to_doc = "Use the compiled-in simulator.";
897 gdbsim_ops.to_open = gdbsim_open;
898 gdbsim_ops.to_close = gdbsim_close;
899 gdbsim_ops.to_detach = gdbsim_detach;
900 gdbsim_ops.to_resume = gdbsim_resume;
901 gdbsim_ops.to_wait = gdbsim_wait;
902 gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
903 gdbsim_ops.to_store_registers = gdbsim_store_register;
904 gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
905 gdbsim_ops.deprecated_xfer_memory = gdbsim_xfer_inferior_memory;
906 gdbsim_ops.to_files_info = gdbsim_files_info;
907 gdbsim_ops.to_insert_breakpoint = memory_insert_breakpoint;
908 gdbsim_ops.to_remove_breakpoint = memory_remove_breakpoint;
909 gdbsim_ops.to_kill = gdbsim_kill;
910 gdbsim_ops.to_load = gdbsim_load;
911 gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
912 gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
913 gdbsim_ops.to_stop = gdbsim_stop;
914 gdbsim_ops.to_thread_alive = gdbsim_thread_alive;
915 gdbsim_ops.to_pid_to_str = gdbsim_pid_to_str;
916 gdbsim_ops.to_stratum = process_stratum;
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_magic = OPS_MAGIC;
926 _initialize_remote_sim (void)
929 add_target (&gdbsim_ops);
931 add_com ("sim", class_obscure, simulator_command,
932 _("Send a command to the simulator."));
934 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
936 remote_sim_ptid = ptid_build (42000, 0, 42000);