/* Generic remote debugging interface for simulators.
- Copyright 1993, 1994, 1996 Free Software Foundation, Inc.
+
+ Copyright (C) 1993-2013 Free Software Foundation, Inc.
+
Contributed by Cygnus Support.
Steve Chamberlain (sac@cygnus.com).
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
-#include "wait.h"
#include "value.h"
#include "gdb_string.h"
#include <ctype.h>
#include "terminal.h"
#include "target.h"
#include "gdbcore.h"
-#include "callback.h"
-#include "remote-sim.h"
-#include "remote-utils.h"
+#include "gdb/callback.h"
+#include "gdb/remote-sim.h"
+#include "command.h"
+#include "regcache.h"
+#include "gdb_assert.h"
+#include "sim-regno.h"
+#include "arch-utils.h"
+#include "readline/readline.h"
+#include "gdbthread.h"
/* Prototypes */
-static void dump_mem PARAMS ((char *buf, int len));
+extern void _initialize_remote_sim (void);
+
+static void dump_mem (char *buf, int len);
+
+static void init_callbacks (void);
+
+static void end_callbacks (void);
-static void init_callbacks PARAMS ((void));
+static int gdb_os_write_stdout (host_callback *, const char *, int);
-static void end_callbacks PARAMS ((void));
+static void gdb_os_flush_stdout (host_callback *);
-static int gdb_os_write_stdout PARAMS ((host_callback *, const char *, int));
+static int gdb_os_write_stderr (host_callback *, const char *, int);
-static void gdb_os_printf_filtered PARAMS ((host_callback *, const char *, ...));
+static void gdb_os_flush_stderr (host_callback *);
-static void gdbsim_fetch_register PARAMS ((int regno));
+static int gdb_os_poll_quit (host_callback *);
-static void gdbsim_store_register PARAMS ((int regno));
+/* printf_filtered is depreciated. */
+static void gdb_os_printf_filtered (host_callback *, const char *, ...);
-static void gdbsim_kill PARAMS ((void));
+static void gdb_os_vprintf_filtered (host_callback *, const char *, va_list);
-static void gdbsim_load PARAMS ((char *prog, int fromtty));
+static void gdb_os_evprintf_filtered (host_callback *, const char *, va_list);
-static void gdbsim_create_inferior PARAMS ((char *exec_file, char *args, char **env));
+static void gdb_os_error (host_callback *, const char *, ...)
+ ATTRIBUTE_NORETURN;
-static void gdbsim_open PARAMS ((char *args, int from_tty));
+static void gdbsim_kill (struct target_ops *);
-static void gdbsim_close PARAMS ((int quitting));
+static void gdbsim_load (char *prog, int fromtty);
-static void gdbsim_detach PARAMS ((char *args, int from_tty));
+static void gdbsim_open (char *args, int from_tty);
-static void gdbsim_resume PARAMS ((int pid, int step, enum target_signal siggnal));
+static void gdbsim_close (int quitting);
-static int gdbsim_wait PARAMS ((int pid, struct target_waitstatus *status));
+static void gdbsim_detach (struct target_ops *ops, char *args, int from_tty);
-static void gdbsim_prepare_to_store PARAMS ((void));
+static void gdbsim_prepare_to_store (struct regcache *regcache);
-static int gdbsim_xfer_inferior_memory PARAMS ((CORE_ADDR memaddr,
- char *myaddr, int len,
- int write,
- struct target_ops *target));
+static void gdbsim_files_info (struct target_ops *target);
-static void gdbsim_files_info PARAMS ((struct target_ops *target));
+static void gdbsim_mourn_inferior (struct target_ops *target);
-static void gdbsim_mourn_inferior PARAMS ((void));
+static void gdbsim_stop (ptid_t ptid);
-static void simulator_command PARAMS ((char *args, int from_tty));
+void simulator_command (char *args, int from_tty);
/* Naming convention:
/* Forward data declarations */
extern struct target_ops gdbsim_ops;
-static int program_loaded = 0;
+static const struct inferior_data *sim_inferior_data_key;
-static void
-dump_mem (buf, len)
- char *buf;
- int len;
+/* Simulator-specific, per-inferior state. */
+struct sim_inferior_data {
+ /* Flag which indicates whether or not the program has been loaded. */
+ int program_loaded;
+
+ /* Simulator descriptor for this inferior. */
+ SIM_DESC gdbsim_desc;
+
+ /* This is the ptid we use for this particular simulator instance. Its
+ value is somewhat arbitrary, as the simulator target don't have a
+ notion of tasks or threads, but we need something non-null to place
+ in inferior_ptid. For simulators which permit multiple instances,
+ we also need a unique identifier to use for each inferior. */
+ ptid_t remote_sim_ptid;
+
+ /* Signal with which to resume. */
+ enum gdb_signal resume_siggnal;
+
+ /* Flag which indicates whether resume should step or not. */
+ int resume_step;
+};
+
+/* Flag indicating the "open" status of this module. It's set to 1
+ in gdbsim_open() and 0 in gdbsim_close(). */
+static int gdbsim_is_open = 0;
+
+/* Value of the next pid to allocate for an inferior. As indicated
+ elsewhere, its initial value is somewhat arbitrary; it's critical
+ though that it's not zero or negative. */
+static int next_pid;
+#define INITIAL_PID 42000
+
+/* Argument list to pass to sim_open(). It is allocated in gdbsim_open()
+ and deallocated in gdbsim_close(). The lifetime needs to extend beyond
+ the call to gdbsim_open() due to the fact that other sim instances other
+ than the first will be allocated after the gdbsim_open() call. */
+static char **sim_argv = NULL;
+
+/* OS-level callback functions for write, flush, etc. */
+static host_callback gdb_callback;
+static int callbacks_initialized = 0;
+
+/* Callback for iterate_over_inferiors. It checks to see if the sim
+ descriptor passed via ARG is the same as that for the inferior
+ designated by INF. Return true if so; false otherwise. */
+
+static int
+check_for_duplicate_sim_descriptor (struct inferior *inf, void *arg)
+{
+ struct sim_inferior_data *sim_data;
+ SIM_DESC new_sim_desc = arg;
+
+ sim_data = inferior_data (inf, sim_inferior_data_key);
+
+ return (sim_data != NULL && sim_data->gdbsim_desc == new_sim_desc);
+}
+
+/* Flags indicating whether or not a sim instance is needed. One of these
+ flags should be passed to get_sim_inferior_data(). */
+
+enum {SIM_INSTANCE_NOT_NEEDED = 0, SIM_INSTANCE_NEEDED = 1};
+
+/* Obtain pointer to per-inferior simulator data, allocating it if necessary.
+ Attempt to open the sim if SIM_INSTANCE_NEEDED is true. */
+
+static struct sim_inferior_data *
+get_sim_inferior_data (struct inferior *inf, int sim_instance_needed)
{
- if (len <= 8)
+ SIM_DESC sim_desc = NULL;
+ struct sim_inferior_data *sim_data
+ = inferior_data (inf, sim_inferior_data_key);
+
+ /* Try to allocate a new sim instance, if needed. We do this ahead of
+ a potential allocation of a sim_inferior_data struct in order to
+ avoid needlessly allocating that struct in the event that the sim
+ instance allocation fails. */
+ if (sim_instance_needed == SIM_INSTANCE_NEEDED
+ && (sim_data == NULL || sim_data->gdbsim_desc == NULL))
{
- if (len == 8 || len == 4)
+ struct inferior *idup;
+ sim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, sim_argv);
+ if (sim_desc == NULL)
+ error (_("Unable to create simulator instance for inferior %d."),
+ inf->num);
+
+ idup = iterate_over_inferiors (check_for_duplicate_sim_descriptor,
+ sim_desc);
+ if (idup != NULL)
{
- long l[2];
- memcpy (l, buf, len);
- printf_filtered ("\t0x%x", l[0]);
- printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
- }
- else
+ /* We don't close the descriptor due to the fact that it's
+ shared with some other inferior. If we were to close it,
+ that might needlessly muck up the other inferior. Of
+ course, it's possible that the damage has already been
+ done... Note that it *will* ultimately be closed during
+ cleanup of the other inferior. */
+ sim_desc = NULL;
+ error (
+ _("Inferior %d and inferior %d would have identical simulator state.\n"
+ "(This simulator does not support the running of more than one inferior.)"),
+ inf->num, idup->num);
+ }
+ }
+
+ if (sim_data == NULL)
+ {
+ sim_data = XZALLOC(struct sim_inferior_data);
+ set_inferior_data (inf, sim_inferior_data_key, sim_data);
+
+ /* Allocate a ptid for this inferior. */
+ sim_data->remote_sim_ptid = ptid_build (next_pid, 0, next_pid);
+ next_pid++;
+
+ /* Initialize the other instance variables. */
+ sim_data->program_loaded = 0;
+ sim_data->gdbsim_desc = sim_desc;
+ sim_data->resume_siggnal = GDB_SIGNAL_0;
+ sim_data->resume_step = 0;
+ }
+ else if (sim_desc)
+ {
+ /* This handles the case where sim_data was allocated prior to
+ needing a sim instance. */
+ sim_data->gdbsim_desc = sim_desc;
+ }
+
+
+ return sim_data;
+}
+
+/* Return pointer to per-inferior simulator data using PTID to find the
+ inferior in question. Return NULL when no inferior is found or
+ when ptid has a zero or negative pid component. */
+
+static struct sim_inferior_data *
+get_sim_inferior_data_by_ptid (ptid_t ptid, int sim_instance_needed)
+{
+ struct inferior *inf;
+ int pid = ptid_get_pid (ptid);
+
+ if (pid <= 0)
+ return NULL;
+
+ inf = find_inferior_pid (pid);
+
+ if (inf)
+ return get_sim_inferior_data (inf, sim_instance_needed);
+ else
+ return NULL;
+}
+
+/* Free the per-inferior simulator data. */
+
+static void
+sim_inferior_data_cleanup (struct inferior *inf, void *data)
+{
+ struct sim_inferior_data *sim_data = data;
+
+ if (sim_data != NULL)
+ {
+ if (sim_data->gdbsim_desc)
{
- int i;
- printf_filtered ("\t");
- for (i = 0; i < len; i++)
- printf_filtered ("0x%x ", buf[i]);
- printf_filtered ("\n");
+ sim_close (sim_data->gdbsim_desc, 0);
+ sim_data->gdbsim_desc = NULL;
}
+ xfree (sim_data);
}
}
-static host_callback gdb_callback;
-static int callbacks_initialized = 0;
+static void
+dump_mem (char *buf, int len)
+{
+ printf_filtered ("\t");
+
+ if (len == 8 || len == 4)
+ {
+ uint32_t l[2];
+
+ memcpy (l, buf, len);
+ printf_filtered ("0x%08x", l[0]);
+ if (len == 8)
+ printf_filtered (" 0x%08x", l[1]);
+ }
+ else
+ {
+ int i;
+
+ for (i = 0; i < len; i++)
+ printf_filtered ("0x%02x ", buf[i]);
+ }
+
+ printf_filtered ("\n");
+}
/* Initialize gdb_callback. */
static void
-init_callbacks ()
+init_callbacks (void)
{
- if (! callbacks_initialized)
+ if (!callbacks_initialized)
{
gdb_callback = default_callback;
- default_callback.init (&gdb_callback);
- default_callback.write_stdout = gdb_os_write_stdout;
- default_callback.printf_filtered = gdb_os_printf_filtered;
- sim_set_callbacks (&gdb_callback);
+ gdb_callback.init (&gdb_callback);
+ gdb_callback.write_stdout = gdb_os_write_stdout;
+ gdb_callback.flush_stdout = gdb_os_flush_stdout;
+ gdb_callback.write_stderr = gdb_os_write_stderr;
+ gdb_callback.flush_stderr = gdb_os_flush_stderr;
+ gdb_callback.printf_filtered = gdb_os_printf_filtered;
+ gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered;
+ gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered;
+ gdb_callback.error = gdb_os_error;
+ gdb_callback.poll_quit = gdb_os_poll_quit;
+ gdb_callback.magic = HOST_CALLBACK_MAGIC;
callbacks_initialized = 1;
}
}
/* Release callbacks (free resources used by them). */
static void
-end_callbacks ()
+end_callbacks (void)
{
if (callbacks_initialized)
{
/* GDB version of os_write_stdout callback. */
-static int
-gdb_os_write_stdout (p, buf, len)
- host_callback *p;
- const char *buf;
- int len;
+static int
+gdb_os_write_stdout (host_callback *p, const char *buf, int len)
+{
+ int i;
+ char b[2];
+
+ ui_file_write (gdb_stdtarg, buf, len);
+ return len;
+}
+
+/* GDB version of os_flush_stdout callback. */
+
+static void
+gdb_os_flush_stdout (host_callback *p)
+{
+ gdb_flush (gdb_stdtarg);
+}
+
+/* GDB version of os_write_stderr callback. */
+
+static int
+gdb_os_write_stderr (host_callback *p, const char *buf, int len)
{
int i;
char b[2];
- for (i = 0; i < len; i++)
+ for (i = 0; i < len; i++)
{
b[0] = buf[i];
b[1] = 0;
- if (target_output_hook)
- target_output_hook (b);
- else
- fputs_filtered (b, gdb_stdout);
+ fputs_unfiltered (b, gdb_stdtargerr);
}
return len;
}
+/* GDB version of os_flush_stderr callback. */
+
+static void
+gdb_os_flush_stderr (host_callback *p)
+{
+ gdb_flush (gdb_stdtargerr);
+}
+
/* GDB version of printf_filtered callback. */
-/* VARARGS */
static void
-#ifdef ANSI_PROTOTYPES
-gdb_os_printf_filtered (host_callback *p, const char *format, ...)
-#else
-gdb_os_printf_filtered (p, va_alist)
- host_callback *p;
- va_dcl
-#endif
+gdb_os_printf_filtered (host_callback * p, const char *format,...)
{
va_list args;
-#ifdef ANSI_PROTOTYPES
+
va_start (args, format);
-#else
- char *format;
+ vfprintf_filtered (gdb_stdout, format, args);
+ va_end (args);
+}
- va_start (args);
- format = va_arg (args, char *);
-#endif
+/* GDB version of error vprintf_filtered. */
- vfprintf_filtered (stdout, format, args);
+static void
+gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
+{
+ vfprintf_filtered (gdb_stdout, format, ap);
+}
+
+/* GDB version of error evprintf_filtered. */
+
+static void
+gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
+{
+ vfprintf_filtered (gdb_stderr, format, ap);
+}
+
+/* GDB version of error callback. */
+static void
+gdb_os_error (host_callback * p, const char *format, ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ verror (format, args);
va_end (args);
}
+int
+one2one_register_sim_regno (struct gdbarch *gdbarch, int regnum)
+{
+ /* Only makes sense to supply raw registers. */
+ gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch));
+ return regnum;
+}
+
static void
-gdbsim_fetch_register (regno)
-int regno;
+gdbsim_fetch_register (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
- if (regno == -1)
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ if (regno == -1)
{
- for (regno = 0; regno < NUM_REGS; regno++)
- gdbsim_fetch_register (regno);
+ for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
+ gdbsim_fetch_register (ops, regcache, regno);
+ return;
}
- else
- {
- char buf[MAX_REGISTER_RAW_SIZE];
- sim_fetch_register (regno, buf);
- supply_register (regno, buf);
- if (sr_get_debug ())
- {
- printf_filtered ("gdbsim_fetch_register: %d", regno);
- /* FIXME: We could print something more intelligible. */
- dump_mem (buf, REGISTER_RAW_SIZE (regno));
- }
+ switch (gdbarch_register_sim_regno (gdbarch, regno))
+ {
+ case LEGACY_SIM_REGNO_IGNORE:
+ break;
+ case SIM_REGNO_DOES_NOT_EXIST:
+ {
+ /* For moment treat a `does not exist' register the same way
+ as an ``unavailable'' register. */
+ char buf[MAX_REGISTER_SIZE];
+ int nr_bytes;
+
+ memset (buf, 0, MAX_REGISTER_SIZE);
+ regcache_raw_supply (regcache, regno, buf);
+ break;
+ }
+
+ default:
+ {
+ static int warn_user = 1;
+ char buf[MAX_REGISTER_SIZE];
+ int nr_bytes;
+
+ gdb_assert (regno >= 0 && regno < gdbarch_num_regs (gdbarch));
+ memset (buf, 0, MAX_REGISTER_SIZE);
+ nr_bytes = sim_fetch_register (sim_data->gdbsim_desc,
+ gdbarch_register_sim_regno
+ (gdbarch, regno),
+ buf,
+ register_size (gdbarch, regno));
+ if (nr_bytes > 0
+ && nr_bytes != register_size (gdbarch, regno) && warn_user)
+ {
+ fprintf_unfiltered (gdb_stderr,
+ "Size of register %s (%d/%d) "
+ "incorrect (%d instead of %d))",
+ gdbarch_register_name (gdbarch, regno),
+ regno,
+ gdbarch_register_sim_regno
+ (gdbarch, regno),
+ nr_bytes, register_size (gdbarch, regno));
+ warn_user = 0;
+ }
+ /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
+ indicating that GDB and the SIM have different ideas about
+ which registers are fetchable. */
+ /* Else if (nr_bytes < 0): an old simulator, that doesn't
+ think to return the register size. Just assume all is ok. */
+ regcache_raw_supply (regcache, regno, buf);
+ if (remote_debug)
+ {
+ printf_filtered ("gdbsim_fetch_register: %d", regno);
+ /* FIXME: We could print something more intelligible. */
+ dump_mem (buf, register_size (gdbarch, regno));
+ }
+ break;
+ }
}
}
static void
-gdbsim_store_register (regno)
-int regno;
+gdbsim_store_register (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
- if (regno == -1)
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ if (regno == -1)
{
- for (regno = 0; regno < NUM_REGS; regno++)
- gdbsim_store_register (regno);
+ for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
+ gdbsim_store_register (ops, regcache, regno);
+ return;
}
- else
+ else if (gdbarch_register_sim_regno (gdbarch, regno) >= 0)
{
- /* FIXME: Until read_register() returns LONGEST, we have this. */
- char tmp[MAX_REGISTER_RAW_SIZE];
- read_register_gen (regno, tmp);
- sim_store_register (regno, tmp);
- if (sr_get_debug ())
+ char tmp[MAX_REGISTER_SIZE];
+ int nr_bytes;
+
+ regcache_cooked_read (regcache, regno, tmp);
+ nr_bytes = sim_store_register (sim_data->gdbsim_desc,
+ gdbarch_register_sim_regno
+ (gdbarch, regno),
+ tmp, register_size (gdbarch, regno));
+ if (nr_bytes > 0 && nr_bytes != register_size (gdbarch, regno))
+ internal_error (__FILE__, __LINE__,
+ _("Register size different to expected"));
+ if (nr_bytes < 0)
+ internal_error (__FILE__, __LINE__,
+ _("Register %d not updated"), regno);
+ if (nr_bytes == 0)
+ warning (_("Register %s not updated"),
+ gdbarch_register_name (gdbarch, regno));
+
+ if (remote_debug)
{
printf_filtered ("gdbsim_store_register: %d", regno);
/* FIXME: We could print something more intelligible. */
- dump_mem (tmp, REGISTER_RAW_SIZE (regno));
+ dump_mem (tmp, register_size (gdbarch, regno));
}
}
}
and releasing other resources acquired by the simulated program. */
static void
-gdbsim_kill ()
+gdbsim_kill (struct target_ops *ops)
{
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_kill\n");
- sim_kill (); /* close fd's, remove mappings */
- inferior_pid = 0;
+ /* There is no need to `kill' running simulator - the simulator is
+ not running. Mourning it is enough. */
+ target_mourn_inferior ();
}
/* Load an executable file into the target process. This is expected to
GDB's symbol tables to match. */
static void
-gdbsim_load (prog, fromtty)
- char *prog;
- int fromtty;
+gdbsim_load (char *args, int fromtty)
{
- if (sr_get_debug ())
+ char **argv;
+ char *prog;
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ if (args == NULL)
+ error_no_arg (_("program to load"));
+
+ argv = gdb_buildargv (args);
+ make_cleanup_freeargv (argv);
+
+ prog = tilde_expand (argv[0]);
+
+ if (argv[1] != NULL)
+ error (_("GDB sim does not yet support a load offset."));
+
+ if (remote_debug)
printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
- inferior_pid = 0;
+ /* FIXME: We will print two messages on error.
+ Need error to either not print anything if passed NULL or need
+ another routine that doesn't take any arguments. */
+ if (sim_load (sim_data->gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
+ error (_("unable to load program"));
- /* This must be done before calling gr_load_image. */
- program_loaded = 1;
+ /* FIXME: If a load command should reset the targets registers then
+ a call to sim_create_inferior() should go here. */
- if (sim_load (prog, fromtty) != 0)
- generic_load (prog, fromtty);
+ sim_data->program_loaded = 1;
}
-/* Start an inferior process and set inferior_pid to its pid.
+/* Start an inferior process and set inferior_ptid to its pid.
EXEC_FILE is the file to run.
- ALLARGS is a string containing the arguments to the program.
+ ARGS is a string containing the arguments to the program.
ENV is the environment vector to pass. Errors reported with error().
On VxWorks and various standalone systems, we ignore exec_file. */
/* This is called not only when we first attach, but also when the
user types "run" after having attached. */
static void
-gdbsim_create_inferior (exec_file, args, env)
- char *exec_file;
- char *args;
- char **env;
+gdbsim_create_inferior (struct target_ops *target, char *exec_file, char *args,
+ char **env, int from_tty)
{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
int len;
- char *arg_buf,**argv;
- CORE_ADDR entry_pt;
-
- if (! program_loaded)
- error ("No program loaded.");
-
- if (sr_get_debug ())
- printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
- exec_file, args);
+ char *arg_buf, **argv;
if (exec_file == 0 || exec_bfd == 0)
- error ("No exec file specified.");
+ warning (_("No executable file specified."));
+ if (!sim_data->program_loaded)
+ warning (_("No program loaded."));
- entry_pt = (CORE_ADDR) bfd_get_start_address (exec_bfd);
+ if (remote_debug)
+ printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
+ (exec_file ? exec_file : "(NULL)"),
+ args);
- gdbsim_kill ();
+ if (ptid_equal (inferior_ptid, sim_data->remote_sim_ptid))
+ gdbsim_kill (target);
remove_breakpoints ();
init_wait_for_inferior ();
- len = 5 + strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10;
- arg_buf = (char *) alloca (len);
- arg_buf[0] = '\0';
- strcat (arg_buf, exec_file);
- strcat (arg_buf, " ");
- strcat (arg_buf, args);
- argv = buildargv (arg_buf);
- make_cleanup (freeargv, (char *) argv);
- sim_create_inferior (entry_pt, argv, env);
+ if (exec_file != NULL)
+ {
+ len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
+ arg_buf = (char *) alloca (len);
+ arg_buf[0] = '\0';
+ strcat (arg_buf, exec_file);
+ strcat (arg_buf, " ");
+ strcat (arg_buf, args);
+ argv = gdb_buildargv (arg_buf);
+ make_cleanup_freeargv (argv);
+ }
+ else
+ argv = NULL;
+
+ if (!have_inferiors ())
+ init_thread_list ();
- inferior_pid = 42;
- insert_breakpoints (); /* Needed to get correct instruction in cache */
- proceed (entry_pt, TARGET_SIGNAL_DEFAULT, 0);
+ if (sim_create_inferior (sim_data->gdbsim_desc, exec_bfd, argv, env)
+ != SIM_RC_OK)
+ error (_("Unable to create sim inferior."));
+
+ inferior_ptid = sim_data->remote_sim_ptid;
+ inferior_appeared (current_inferior (), ptid_get_pid (inferior_ptid));
+ add_thread_silent (inferior_ptid);
+
+ insert_breakpoints (); /* Needed to get correct instruction
+ in cache. */
+
+ clear_proceed_status ();
}
/* The open routine takes the rest of the parameters from the command,
and (if successful) pushes a new target onto the stack.
Targets should supply this routine, if only to provide an error message. */
-/* Called when selecting the simulator. EG: (gdb) target sim name. */
+/* Called when selecting the simulator. E.g. (gdb) target sim name. */
static void
-gdbsim_open (args, from_tty)
- char *args;
- int from_tty;
+gdbsim_open (char *args, int from_tty)
{
- if (sr_get_debug ())
+ int len;
+ char *arg_buf;
+ struct sim_inferior_data *sim_data;
+ SIM_DESC gdbsim_desc;
+
+ if (remote_debug)
printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
+ /* Ensure that the sim target is not on the target stack. This is
+ necessary, because if it is on the target stack, the call to
+ push_target below will invoke sim_close(), thus freeing various
+ state (including a sim instance) that we allocate prior to
+ invoking push_target(). We want to delay the push_target()
+ operation until after we complete those operations which could
+ error out. */
+ if (gdbsim_is_open)
+ unpush_target (&gdbsim_ops);
+
+ len = (7 + 1 /* gdbsim */
+ + strlen (" -E little")
+ + strlen (" --architecture=xxxxxxxxxx")
+ + strlen (" --sysroot=") + strlen (gdb_sysroot) +
+ + (args ? strlen (args) : 0)
+ + 50) /* slack */ ;
+ arg_buf = (char *) alloca (len);
+ strcpy (arg_buf, "gdbsim"); /* 7 */
+ /* Specify the byte order for the target when it is explicitly
+ specified by the user (not auto detected). */
+ switch (selected_byte_order ())
+ {
+ case BFD_ENDIAN_BIG:
+ strcat (arg_buf, " -E big");
+ break;
+ case BFD_ENDIAN_LITTLE:
+ strcat (arg_buf, " -E little");
+ break;
+ case BFD_ENDIAN_UNKNOWN:
+ break;
+ }
+ /* Specify the architecture of the target when it has been
+ explicitly specified */
+ if (selected_architecture_name () != NULL)
+ {
+ strcat (arg_buf, " --architecture=");
+ strcat (arg_buf, selected_architecture_name ());
+ }
+ /* Pass along gdb's concept of the sysroot. */
+ strcat (arg_buf, " --sysroot=");
+ strcat (arg_buf, gdb_sysroot);
+ /* finally, any explicit args */
+ if (args)
+ {
+ strcat (arg_buf, " "); /* 1 */
+ strcat (arg_buf, args);
+ }
+ sim_argv = gdb_buildargv (arg_buf);
+
init_callbacks ();
+ gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, sim_argv);
+
+ if (gdbsim_desc == 0)
+ {
+ freeargv (sim_argv);
+ sim_argv = NULL;
+ error (_("unable to create simulator instance"));
+ }
+
+ /* Reset the pid numberings for this batch of sim instances. */
+ next_pid = INITIAL_PID;
+
+ /* Allocate the inferior data, but do not allocate a sim instance
+ since we've already just done that. */
+ sim_data = get_sim_inferior_data (current_inferior (),
+ SIM_INSTANCE_NOT_NEEDED);
- sim_open (args);
+ sim_data->gdbsim_desc = gdbsim_desc;
push_target (&gdbsim_ops);
- target_fetch_registers (-1);
printf_filtered ("Connected to the simulator.\n");
+
+ /* There's nothing running after "target sim" or "load"; not until
+ "run". */
+ inferior_ptid = null_ptid;
+
+ gdbsim_is_open = 1;
+}
+
+/* Callback for iterate_over_inferiors. Called (indirectly) by
+ gdbsim_close(). */
+
+static int
+gdbsim_close_inferior (struct inferior *inf, void *arg)
+{
+ struct sim_inferior_data *sim_data = inferior_data (inf,
+ sim_inferior_data_key);
+ if (sim_data != NULL)
+ {
+ ptid_t ptid = sim_data->remote_sim_ptid;
+
+ sim_inferior_data_cleanup (inf, sim_data);
+ set_inferior_data (inf, sim_inferior_data_key, NULL);
+
+ /* Having a ptid allocated and stored in remote_sim_ptid does
+ not mean that a corresponding inferior was ever created.
+ Thus we need to verify the existence of an inferior using the
+ pid in question before setting inferior_ptid via
+ switch_to_thread() or mourning the inferior. */
+ if (find_inferior_pid (ptid_get_pid (ptid)) != NULL)
+ {
+ switch_to_thread (ptid);
+ generic_mourn_inferior ();
+ }
+ }
+
+ return 0;
}
/* Does whatever cleanup is required for a target that we are no longer
always called just before a routine is popped off the target stack.
Closing file descriptors and freeing memory are typical things it should
do. */
-/* Close out all files and local state before this target loses control. */
+/* Close out all files and local state before this target loses control. */
static void
-gdbsim_close (quitting)
- int quitting;
+gdbsim_close (int quitting)
{
- if (sr_get_debug ())
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
+
+ if (remote_debug)
printf_filtered ("gdbsim_close: quitting %d\n", quitting);
- program_loaded = 0;
+ iterate_over_inferiors (gdbsim_close_inferior, NULL);
- sim_close (quitting);
+ if (sim_argv != NULL)
+ {
+ freeargv (sim_argv);
+ sim_argv = NULL;
+ }
end_callbacks ();
+
+ gdbsim_is_open = 0;
}
/* Takes a program previously attached to and detaches it.
Use this when you want to detach and do something else with your gdb. */
static void
-gdbsim_detach (args,from_tty)
- char *args;
- int from_tty;
+gdbsim_detach (struct target_ops *ops, char *args, int from_tty)
{
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
pop_target (); /* calls gdbsim_close to do the real work */
if (from_tty)
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
}
-
+
/* Resume execution of the target process. STEP says whether to single-step
or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
to the target, or zero for no signal. */
+struct resume_data
+{
+ enum gdb_signal siggnal;
+ int step;
+};
+
+static int
+gdbsim_resume_inferior (struct inferior *inf, void *arg)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (inf, SIM_INSTANCE_NOT_NEEDED);
+ struct resume_data *rd = arg;
+
+ if (sim_data)
+ {
+ sim_data->resume_siggnal = rd->siggnal;
+ sim_data->resume_step = rd->step;
+
+ if (remote_debug)
+ printf_filtered (_("gdbsim_resume: pid %d, step %d, signal %d\n"),
+ inf->pid, rd->step, rd->siggnal);
+ }
+
+ /* When called from iterate_over_inferiors, a zero return causes the
+ iteration process to proceed until there are no more inferiors to
+ consider. */
+ return 0;
+}
+
+static void
+gdbsim_resume (struct target_ops *ops,
+ ptid_t ptid, int step, enum gdb_signal siggnal)
+{
+ struct resume_data rd;
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data_by_ptid (ptid, SIM_INSTANCE_NOT_NEEDED);
+
+ rd.siggnal = siggnal;
+ rd.step = step;
+
+ /* We don't access any sim_data members within this function.
+ What's of interest is whether or not the call to
+ get_sim_inferior_data_by_ptid(), above, is able to obtain a
+ non-NULL pointer. If it managed to obtain a non-NULL pointer, we
+ know we have a single inferior to consider. If it's NULL, we
+ either have multiple inferiors to resume or an error condition. */
+
+ if (sim_data)
+ gdbsim_resume_inferior (find_inferior_pid (ptid_get_pid (ptid)), &rd);
+ else if (ptid_equal (ptid, minus_one_ptid))
+ iterate_over_inferiors (gdbsim_resume_inferior, &rd);
+ else
+ error (_("The program is not being run."));
+}
+
+/* Notify the simulator of an asynchronous request to stop.
+
+ The simulator shall ensure that the stop request is eventually
+ delivered to the simulator. If the call is made while the
+ simulator is not running then the stop request is processed when
+ the simulator is next resumed.
+
+ For simulators that do not support this operation, just abort. */
+
+static int
+gdbsim_stop_inferior (struct inferior *inf, void *arg)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (inf, SIM_INSTANCE_NEEDED);
+
+ if (sim_data)
+ {
+ if (!sim_stop (sim_data->gdbsim_desc))
+ {
+ quit ();
+ }
+ }
+
+ /* When called from iterate_over_inferiors, a zero return causes the
+ iteration process to proceed until there are no more inferiors to
+ consider. */
+ return 0;
+}
+
static void
-gdbsim_resume (pid, step, siggnal)
- int pid, step;
- enum target_signal siggnal;
+gdbsim_stop (ptid_t ptid)
{
- if (inferior_pid != 42)
- error ("The program is not being run.");
+ struct sim_inferior_data *sim_data;
+
+ if (ptid_equal (ptid, minus_one_ptid))
+ {
+ iterate_over_inferiors (gdbsim_stop_inferior, NULL);
+ }
+ else
+ {
+ struct inferior *inf = find_inferior_pid (ptid_get_pid (ptid));
+
+ if (inf == NULL)
+ error (_("Can't stop pid %d. No inferior found."),
+ ptid_get_pid (ptid));
+
+ gdbsim_stop_inferior (inf, NULL);
+ }
+}
+
+/* GDB version of os_poll_quit callback.
+ Taken from gdb/util.c - should be in a library. */
- if (sr_get_debug ())
- printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
+static int
+gdb_os_poll_quit (host_callback *p)
+{
+ if (deprecated_ui_loop_hook != NULL)
+ deprecated_ui_loop_hook (0);
- sim_resume (step, target_signal_to_host (siggnal));
+ if (check_quit_flag ()) /* gdb's idea of quit */
+ {
+ clear_quit_flag (); /* we've stolen it */
+ return 1;
+ }
+ return 0;
}
/* Wait for inferior process to do something. Return pid of child,
or -1 in case of error; store status through argument pointer STATUS,
just as `wait' would. */
-static int
-gdbsim_wait (pid, status)
- int pid;
- struct target_waitstatus *status;
+static void
+gdbsim_cntrl_c (int signo)
{
- int sigrc;
- enum sim_stop reason;
+ gdbsim_stop (minus_one_ptid);
+}
+
+static ptid_t
+gdbsim_wait (struct target_ops *ops,
+ ptid_t ptid, struct target_waitstatus *status, int options)
+{
+ struct sim_inferior_data *sim_data;
+ static RETSIGTYPE (*prev_sigint) ();
+ int sigrc = 0;
+ enum sim_stop reason = sim_running;
+
+ /* This target isn't able to (yet) resume more than one inferior at a time.
+ When ptid is minus_one_ptid, just use the current inferior. If we're
+ given an explicit pid, we'll try to find it and use that instead. */
+ if (ptid_equal (ptid, minus_one_ptid))
+ sim_data = get_sim_inferior_data (current_inferior (),
+ SIM_INSTANCE_NEEDED);
+ else
+ {
+ sim_data = get_sim_inferior_data_by_ptid (ptid, SIM_INSTANCE_NEEDED);
+ if (sim_data == NULL)
+ error (_("Unable to wait for pid %d. Inferior not found."),
+ ptid_get_pid (ptid));
+ inferior_ptid = ptid;
+ }
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_wait\n");
- sim_stop_reason (&reason, &sigrc);
+#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
+ {
+ struct sigaction sa, osa;
+ sa.sa_handler = gdbsim_cntrl_c;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = 0;
+ sigaction (SIGINT, &sa, &osa);
+ prev_sigint = osa.sa_handler;
+ }
+#else
+ prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
+#endif
+ sim_resume (sim_data->gdbsim_desc, sim_data->resume_step,
+ sim_data->resume_siggnal);
+
+ signal (SIGINT, prev_sigint);
+ sim_data->resume_step = 0;
+
+ sim_stop_reason (sim_data->gdbsim_desc, &reason, &sigrc);
+
switch (reason)
{
case sim_exited:
status->value.integer = sigrc;
break;
case sim_stopped:
- status->kind = TARGET_WAITKIND_STOPPED;
- /* The signal in sigrc is a host signal. That probably
- should be fixed. */
- status->value.sig = target_signal_from_host (sigrc);
+ switch (sigrc)
+ {
+ case GDB_SIGNAL_ABRT:
+ quit ();
+ break;
+ case GDB_SIGNAL_INT:
+ case GDB_SIGNAL_TRAP:
+ default:
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = sigrc;
+ break;
+ }
break;
case sim_signalled:
status->kind = TARGET_WAITKIND_SIGNALLED;
- /* The signal in sigrc is a host signal. That probably
- should be fixed. */
- status->value.sig = target_signal_from_host (sigrc);
+ status->value.sig = sigrc;
+ break;
+ case sim_running:
+ case sim_polling:
+ /* FIXME: Is this correct? */
break;
}
- return inferior_pid;
+ return inferior_ptid;
}
/* Get ready to modify the registers array. On machines which store
debugged. */
static void
-gdbsim_prepare_to_store ()
+gdbsim_prepare_to_store (struct regcache *regcache)
{
- /* Do nothing, since we can store individual regs */
+ /* Do nothing, since we can store individual regs. */
}
+/* Transfer LEN bytes between GDB address MYADDR and target address
+ MEMADDR. If WRITE is non-zero, transfer them to the target,
+ otherwise transfer them from the target. TARGET is unused.
+
+ Returns the number of bytes transferred. */
+
static int
-gdbsim_xfer_inferior_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
+gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len,
+ int write, struct mem_attrib *attrib,
+ struct target_ops *target)
{
- if (! program_loaded)
- error ("No program loaded.");
-
- if (sr_get_debug ())
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
+
+ /* If this target doesn't have memory yet, return 0 causing the
+ request to be passed to a lower target, hopefully an exec
+ file. */
+ if (!target->to_has_memory (target))
+ return 0;
+
+ if (!sim_data->program_loaded)
+ error (_("No program loaded."));
+
+ /* Note that we obtained the sim_data pointer above using
+ SIM_INSTANCE_NOT_NEEDED. We do this so that we don't needlessly
+ allocate a sim instance prior to loading a program. If we
+ get to this point in the code though, gdbsim_desc should be
+ non-NULL. (Note that a sim instance is needed in order to load
+ the program...) */
+ gdb_assert (sim_data->gdbsim_desc != NULL);
+
+ if (remote_debug)
{
- printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
- myaddr, memaddr, len, write);
- if (sr_get_debug () && write)
- dump_mem(myaddr, len);
+ /* FIXME: Send to something other than STDOUT? */
+ printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x");
+ gdb_print_host_address (myaddr, gdb_stdout);
+ printf_filtered (", memaddr %s, len %d, write %d\n",
+ paddress (target_gdbarch (), memaddr), len, write);
+ if (remote_debug && write)
+ dump_mem (myaddr, len);
}
if (write)
{
- len = sim_write (memaddr, myaddr, len);
+ len = sim_write (sim_data->gdbsim_desc, memaddr, myaddr, len);
}
- else
+ else
{
- len = sim_read (memaddr, myaddr, len);
- if (sr_get_debug () && len > 0)
- dump_mem(myaddr, len);
- }
+ len = sim_read (sim_data->gdbsim_desc, memaddr, myaddr, len);
+ if (remote_debug && len > 0)
+ dump_mem (myaddr, len);
+ }
return len;
}
static void
-gdbsim_files_info (target)
- struct target_ops *target;
+gdbsim_files_info (struct target_ops *target)
{
- char *file = "nothing";
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+ const char *file = "nothing";
if (exec_bfd)
file = bfd_get_filename (exec_bfd);
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
if (exec_bfd)
{
printf_filtered ("\tAttached to %s running program %s\n",
target_shortname, file);
- sim_info (0);
+ sim_info (sim_data->gdbsim_desc, 0);
}
}
/* Clear the simulator's notion of what the break points are. */
static void
-gdbsim_mourn_inferior ()
-{
- if (sr_get_debug ())
+gdbsim_mourn_inferior (struct target_ops *target)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
+
+ if (remote_debug)
printf_filtered ("gdbsim_mourn_inferior:\n");
remove_breakpoints ();
generic_mourn_inferior ();
+ delete_thread_silent (sim_data->remote_sim_ptid);
}
/* Pass the command argument through to the simulator verbatim. The
simulator must do any command interpretation work. */
-static void
-simulator_command (args, from_tty)
- char *args;
- int from_tty;
+void
+simulator_command (char *args, int from_tty)
{
- /* The user may give a command before the simulator is opened, so
- ensure that the callbacks have been set up. */
- init_callbacks ();
+ struct sim_inferior_data *sim_data;
+
+ /* We use inferior_data() instead of get_sim_inferior_data() here in
+ order to avoid attaching a sim_inferior_data struct to an
+ inferior unnecessarily. The reason we take such care here is due
+ to the fact that this function, simulator_command(), may be called
+ even when the sim target is not active. If we were to use
+ get_sim_inferior_data() here, it is possible that this call would
+ be made either prior to gdbsim_open() or after gdbsim_close(),
+ thus allocating memory that would not be garbage collected until
+ the ultimate destruction of the associated inferior. */
+
+ sim_data = inferior_data (current_inferior (), sim_inferior_data_key);
+ if (sim_data == NULL || sim_data->gdbsim_desc == NULL)
+ {
- sim_do_command (args);
-}
-
-/* Define the target subroutine names */
-
-struct target_ops gdbsim_ops = {
- "sim", /* to_shortname */
- "simulator", /* to_longname */
- "Use the compiled-in simulator.", /* to_doc */
- gdbsim_open, /* to_open */
- gdbsim_close, /* to_close */
- NULL, /* to_attach */
- gdbsim_detach, /* to_detach */
- gdbsim_resume, /* to_resume */
- gdbsim_wait, /* to_wait */
- gdbsim_fetch_register, /* to_fetch_registers */
- gdbsim_store_register, /* to_store_registers */
- gdbsim_prepare_to_store, /* to_prepare_to_store */
- gdbsim_xfer_inferior_memory, /* to_xfer_memory */
- gdbsim_files_info, /* to_files_info */
- memory_insert_breakpoint, /* to_insert_breakpoint */
- memory_remove_breakpoint, /* to_remove_breakpoint */
- NULL, /* to_terminal_init */
- NULL, /* to_terminal_inferior */
- NULL, /* to_terminal_ours_for_output */
- NULL, /* to_terminal_ours */
- NULL, /* to_terminal_info */
- gdbsim_kill, /* to_kill */
- gdbsim_load, /* to_load */
- NULL, /* to_lookup_symbol */
- gdbsim_create_inferior, /* to_create_inferior */
- gdbsim_mourn_inferior, /* to_mourn_inferior */
- 0, /* to_can_run */
- 0, /* to_notice_signals */
- 0, /* to_thread_alive */
- 0, /* to_stop */
- process_stratum, /* to_stratum */
- NULL, /* to_next */
- 1, /* to_has_all_memory */
- 1, /* to_has_memory */
- 1, /* to_has_stack */
- 1, /* to_has_registers */
- 1, /* to_has_execution */
- NULL, /* sections */
- NULL, /* sections_end */
- OPS_MAGIC, /* to_magic */
-};
+ /* PREVIOUSLY: The user may give a command before the simulator
+ is opened. [...] (??? assuming of course one wishes to
+ continue to allow commands to be sent to unopened simulators,
+ which isn't entirely unreasonable). */
+
+ /* The simulator is a builtin abstraction of a remote target.
+ Consistent with that model, access to the simulator, via sim
+ commands, is restricted to the period when the channel to the
+ simulator is open. */
+
+ error (_("Not connected to the simulator target"));
+ }
+
+ sim_do_command (sim_data->gdbsim_desc, args);
+
+ /* Invalidate the register cache, in case the simulator command does
+ something funny. */
+ registers_changed ();
+}
+
+static VEC (char_ptr) *
+sim_command_completer (struct cmd_list_element *ignore, char *text, char *word)
+{
+ struct sim_inferior_data *sim_data;
+ char **tmp;
+ int i;
+ VEC (char_ptr) *result = NULL;
+
+ sim_data = inferior_data (current_inferior (), sim_inferior_data_key);
+ if (sim_data == NULL || sim_data->gdbsim_desc == NULL)
+ return NULL;
+
+ tmp = sim_complete_command (sim_data->gdbsim_desc, text, word);
+ if (tmp == NULL)
+ return NULL;
+
+ /* Transform the array into a VEC, and then free the array. */
+ for (i = 0; tmp[i] != NULL; i++)
+ VEC_safe_push (char_ptr, result, tmp[i]);
+ xfree (tmp);
+
+ return result;
+}
+
+/* Check to see if a thread is still alive. */
+
+static int
+gdbsim_thread_alive (struct target_ops *ops, ptid_t ptid)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data_by_ptid (ptid, SIM_INSTANCE_NOT_NEEDED);
+
+ if (sim_data == NULL)
+ return 0;
+
+ if (ptid_equal (ptid, sim_data->remote_sim_ptid))
+ /* The simulators' task is always alive. */
+ return 1;
+
+ return 0;
+}
+
+/* Convert a thread ID to a string. Returns the string in a static
+ buffer. */
+
+static char *
+gdbsim_pid_to_str (struct target_ops *ops, ptid_t ptid)
+{
+ return normal_pid_to_str (ptid);
+}
+
+/* Simulator memory may be accessed after the program has been loaded. */
+
+static int
+gdbsim_has_all_memory (struct target_ops *ops)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
+
+ if (!sim_data->program_loaded)
+ return 0;
+
+ return 1;
+}
+
+static int
+gdbsim_has_memory (struct target_ops *ops)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
+
+ if (!sim_data->program_loaded)
+ return 0;
+
+ return 1;
+}
+
+/* Define the target subroutine names. */
+
+struct target_ops gdbsim_ops;
+
+static void
+init_gdbsim_ops (void)
+{
+ gdbsim_ops.to_shortname = "sim";
+ gdbsim_ops.to_longname = "simulator";
+ gdbsim_ops.to_doc = "Use the compiled-in simulator.";
+ gdbsim_ops.to_open = gdbsim_open;
+ gdbsim_ops.to_close = gdbsim_close;
+ gdbsim_ops.to_detach = gdbsim_detach;
+ gdbsim_ops.to_resume = gdbsim_resume;
+ gdbsim_ops.to_wait = gdbsim_wait;
+ gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
+ gdbsim_ops.to_store_registers = gdbsim_store_register;
+ gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
+ gdbsim_ops.deprecated_xfer_memory = gdbsim_xfer_inferior_memory;
+ gdbsim_ops.to_files_info = gdbsim_files_info;
+ gdbsim_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ gdbsim_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ gdbsim_ops.to_kill = gdbsim_kill;
+ gdbsim_ops.to_load = gdbsim_load;
+ gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
+ gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
+ gdbsim_ops.to_stop = gdbsim_stop;
+ gdbsim_ops.to_thread_alive = gdbsim_thread_alive;
+ gdbsim_ops.to_pid_to_str = gdbsim_pid_to_str;
+ gdbsim_ops.to_stratum = process_stratum;
+ gdbsim_ops.to_has_all_memory = gdbsim_has_all_memory;
+ gdbsim_ops.to_has_memory = gdbsim_has_memory;
+ gdbsim_ops.to_has_stack = default_child_has_stack;
+ gdbsim_ops.to_has_registers = default_child_has_registers;
+ gdbsim_ops.to_has_execution = default_child_has_execution;
+ gdbsim_ops.to_magic = OPS_MAGIC;
+}
void
-_initialize_remote_sim ()
+_initialize_remote_sim (void)
{
+ struct cmd_list_element *c;
+
+ init_gdbsim_ops ();
add_target (&gdbsim_ops);
- add_com ("sim <command>", class_obscure, simulator_command,
- "Send a command to the simulator.");
+ c = add_com ("sim", class_obscure, simulator_command,
+ _("Send a command to the simulator."));
+ set_cmd_completer (c, sim_command_completer);
+
+ sim_inferior_data_key
+ = register_inferior_data_with_cleanup (NULL, sim_inferior_data_cleanup);
}
projects / deliverable / binutils-gdb.git / blobdiff