/* Generic remote debugging interface for simulators.
- Copyright 1993 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
Contributed by Cygnus Support.
- Steve Chamberlain (sac@cygnus.com) and Doug Evans (dje@cygnus.com).
+ 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
#include "defs.h"
#include "inferior.h"
#include "wait.h"
#include "value.h"
-#include <string.h>
+#include "gdb_string.h"
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include "terminal.h"
#include "target.h"
#include "gdbcore.h"
+#include "callback.h"
#include "remote-sim.h"
#include "remote-utils.h"
+#include "command.h"
+
+/* Prototypes */
+
+extern void _initialize_remote_sim PARAMS ((void));
+
+extern int (*ui_loop_hook) PARAMS ((int signo));
+
+static void dump_mem PARAMS ((char *buf, int len));
+
+static void init_callbacks PARAMS ((void));
+
+static void end_callbacks PARAMS ((void));
+
+static int gdb_os_write_stdout PARAMS ((host_callback *, const char *, int));
+
+static void gdb_os_flush_stdout PARAMS ((host_callback *));
+
+static int gdb_os_write_stderr PARAMS ((host_callback *, const char *, int));
+
+static void gdb_os_flush_stderr PARAMS ((host_callback *));
+
+static int gdb_os_poll_quit PARAMS ((host_callback *));
+
+/* printf_filtered is depreciated */
+static void gdb_os_printf_filtered PARAMS ((host_callback *, const char *,...));
+
+static void gdb_os_vprintf_filtered PARAMS ((host_callback *, const char *, va_list));
+
+static void gdb_os_evprintf_filtered PARAMS ((host_callback *, const char *, va_list));
+
+static void gdb_os_error PARAMS ((host_callback *, const char *,...));
+
+static void gdbsim_fetch_register PARAMS ((int regno));
+
+static void gdbsim_store_register PARAMS ((int regno));
+
+static void gdbsim_kill PARAMS ((void));
+
+static void gdbsim_load PARAMS ((char *prog, int fromtty));
+
+static void gdbsim_create_inferior PARAMS ((char *exec_file, char *args, char **env));
+
+static void gdbsim_open PARAMS ((char *args, int from_tty));
+
+static void gdbsim_close PARAMS ((int quitting));
+
+static void gdbsim_detach PARAMS ((char *args, int from_tty));
+
+static void gdbsim_resume PARAMS ((int pid, int step, enum target_signal siggnal));
+
+static int gdbsim_wait PARAMS ((int pid, struct target_waitstatus * status));
+
+static void gdbsim_prepare_to_store PARAMS ((void));
+
+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 PARAMS ((struct target_ops * target));
+
+static void gdbsim_mourn_inferior PARAMS ((void));
+
+static void gdbsim_stop PARAMS ((void));
+
+void simulator_command PARAMS ((char *args, int from_tty));
/* Naming convention:
sim_* are the interface to the simulator (see remote-sim.h).
-
gdbsim_* are stuff which is internal to gdb. */
/* Forward data declarations */
static int program_loaded = 0;
+/* We must keep track of whether the simulator has been opened or not because
+ GDB can call a target's close routine twice, but sim_close doesn't allow
+ this. We also need to record the result of sim_open so we can pass it
+ back to the other sim_foo routines. */
+static SIM_DESC gdbsim_desc = 0;
+
static void
dump_mem (buf, len)
char *buf;
{
long l[2];
memcpy (l, buf, len);
- printf_filtered ("\t0x%x", l[0]);
+ printf_filtered ("\t0x%lx", l[0]);
printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
}
else
}
}
+static host_callback gdb_callback;
+static int callbacks_initialized = 0;
+
+/* Initialize gdb_callback. */
+
+static void
+init_callbacks ()
+{
+ if (!callbacks_initialized)
+ {
+ gdb_callback = default_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 ()
+{
+ if (callbacks_initialized)
+ {
+ gdb_callback.shutdown (&gdb_callback);
+ callbacks_initialized = 0;
+ }
+}
+
+/* GDB version of os_write_stdout callback. */
+
+static int
+gdb_os_write_stdout (p, buf, len)
+ host_callback *p;
+ const char *buf;
+ int len;
+{
+ int i;
+ char b[2];
+
+ gdb_file_write (gdb_stdtarg, buf, len);
+ return len;
+}
+
+/* GDB version of os_flush_stdout callback. */
+
+static void
+gdb_os_flush_stdout (p)
+ host_callback *p;
+{
+ gdb_flush (gdb_stdtarg);
+}
+
+/* GDB version of os_write_stderr callback. */
+
+static int
+gdb_os_write_stderr (p, buf, len)
+ host_callback *p;
+ const char *buf;
+ int len;
+{
+ int i;
+ char b[2];
+
+ for (i = 0; i < len; i++)
+ {
+ b[0] = buf[i];
+ b[1] = 0;
+ fputs_unfiltered (b, gdb_stdtarg);
+ }
+ return len;
+}
+
+/* GDB version of os_flush_stderr callback. */
+
+static void
+gdb_os_flush_stderr (p)
+ host_callback *p;
+{
+ gdb_flush (gdb_stderr);
+}
+
+/* GDB version of printf_filtered callback. */
+
+static void
+gdb_os_printf_filtered (host_callback * p, const char *format,...)
+{
+ va_list args;
+ va_start (args, format);
+
+ vfprintf_filtered (gdb_stdout, format, args);
+
+ va_end (args);
+}
+
+/* GDB version of error vprintf_filtered. */
+
+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,...)
+{
+ if (error_hook)
+ (*error_hook) ();
+ else
+ {
+ va_list args;
+ va_start (args, format);
+ verror (format, args);
+ va_end (args);
+ }
+}
+
+#ifndef REGISTER_SIM_REGNO
+#define REGISTER_SIM_REGNO(N) (N)
+#endif
+
static void
gdbsim_fetch_register (regno)
-int regno;
+ int regno;
{
- if (regno == -1)
+ static int warn_user = 1;
+ if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
gdbsim_fetch_register (regno);
}
- else
+ else if (REGISTER_NAME (regno) != NULL
+ && *REGISTER_NAME (regno) != '\0')
{
char buf[MAX_REGISTER_RAW_SIZE];
-
- sim_fetch_register (regno, buf);
+ int nr_bytes;
+ if (REGISTER_SIM_REGNO (regno) >= 0)
+ nr_bytes = sim_fetch_register (gdbsim_desc,
+ REGISTER_SIM_REGNO (regno),
+ buf, REGISTER_RAW_SIZE (regno));
+ else
+ nr_bytes = 0;
+ if (nr_bytes == 0)
+ /* register not applicable, supply zero's */
+ memset (buf, 0, MAX_REGISTER_RAW_SIZE);
+ else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
+ && warn_user)
+ {
+ fprintf_unfiltered (gdb_stderr,
+ "Size of register %s (%d/%d) incorrect (%d instead of %d))",
+ REGISTER_NAME (regno),
+ regno, REGISTER_SIM_REGNO (regno),
+ nr_bytes, REGISTER_RAW_SIZE (regno));
+ warn_user = 0;
+ }
supply_register (regno, buf);
if (sr_get_debug ())
{
}
}
+
static void
gdbsim_store_register (regno)
-int regno;
+ int regno;
{
- if (regno == -1)
+ if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
gdbsim_store_register (regno);
}
- else
+ else if (REGISTER_NAME (regno) != NULL
+ && *REGISTER_NAME (regno) != '\0'
+ && REGISTER_SIM_REGNO (regno) >= 0)
{
- /* FIXME: Until read_register() returns LONGEST, we have this. */
- char value[MAX_REGISTER_RAW_SIZE];
- read_register_gen (regno, value);
- sim_store_register (regno, value);
+ char tmp[MAX_REGISTER_RAW_SIZE];
+ int nr_bytes;
+ read_register_gen (regno, tmp);
+ nr_bytes = sim_store_register (gdbsim_desc,
+ REGISTER_SIM_REGNO (regno),
+ tmp, REGISTER_RAW_SIZE (regno));
+ if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
+ internal_error ("Register size different to expected");
if (sr_get_debug ())
{
printf_filtered ("gdbsim_store_register: %d", regno);
/* FIXME: We could print something more intelligible. */
- dump_mem (value, REGISTER_RAW_SIZE (regno));
+ dump_mem (tmp, REGISTER_RAW_SIZE (regno));
}
}
}
+/* Kill the running program. This may involve closing any open files
+ and releasing other resources acquired by the simulated program. */
+
static void
gdbsim_kill ()
{
if (sr_get_debug ())
printf_filtered ("gdbsim_kill\n");
- sim_kill (); /* close fd's, remove mappings */
+ /* There is no need to `kill' running simulator - the simulator is
+ not running */
inferior_pid = 0;
}
char *prog;
int fromtty;
{
- bfd *abfd;
-
if (sr_get_debug ())
printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
- inferior_pid = 0;
- program_loaded = 0;
- abfd = bfd_openr (prog, gnutarget);
-
- if (!abfd)
- error ("Unable to open file %s.", prog);
+ inferior_pid = 0;
- if (bfd_check_format (abfd, bfd_object) == 0)
- error ("File is not an object file.");
+ /* 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 (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
+ error ("unable to load program");
- if (sim_load (abfd, prog) != 0)
- return;
+ /* FIXME: If a load command should reset the targets registers then
+ a call to sim_create_inferior() should go here. */
program_loaded = 1;
-
- sim_set_pc (abfd->start_address);
}
-/*
- * This is a utility routine that sim_load() can call to do the work.
- * The result is 0 for success, non-zero for failure.
- *
- * Eg: int sim_load (bfd *abfd, char *prog) { return sim_load_standard (abfd); }
- */
-
-sim_load_standard (abfd)
- bfd *abfd;
-{
- asection *s;
-
- s = abfd->sections;
- while (s != (asection *)NULL)
- {
- if (s->flags & SEC_LOAD)
- {
- int i;
- int delta = 4096;
- char *buffer = xmalloc (delta);
- printf_filtered ("%s\t: 0x%4x .. 0x%4x ",
- s->name, s->vma, s->vma + s->_raw_size);
- for (i = 0; i < s->_raw_size; i+= delta)
- {
- int sub_delta = delta;
- if (sub_delta > s->_raw_size - i)
- sub_delta = s->_raw_size - i ;
-
- bfd_get_section_contents (abfd, s, buffer, i, sub_delta);
- sim_write (s->vma + i, buffer, sub_delta);
- printf_filtered ("*");
- fflush (stdout);
- }
- printf_filtered ("\n");
- free (buffer);
- }
- s = s->next;
- }
-
- return 0;
-}
/* Start an inferior process and set inferior_pid 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
char *args;
char **env;
{
- int len,entry_pt;
- char *arg_buf,**argv;
+ int len;
+ char *arg_buf, **argv;
- if (! program_loaded)
- error ("No program loaded.");
+ if (exec_file == 0 || exec_bfd == 0)
+ warning ("No executable file specified.");
+ if (!program_loaded)
+ warning ("No program loaded.");
if (sr_get_debug ())
printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
- exec_file, args);
-
- if (exec_file == 0 || exec_bfd == 0)
- error ("No exec file specified.");
-
- entry_pt = (int) bfd_get_start_address (exec_bfd);
+ (exec_file ? exec_file : "(NULL)"),
+ args);
- gdbsim_kill (NULL, NULL);
+ gdbsim_kill ();
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);
- /* FIXME: remote-sim.h says targets that don't support this return
- non-zero. Perhaps distinguish between "not supported" and other errors?
- Or maybe that can be the only error. */
- if (sim_set_args (argv, env) != 0)
- return;
+ 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 = buildargv (arg_buf);
+ make_cleanup_freeargv (argv);
+ }
+ else
+ argv = NULL;
+ sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
inferior_pid = 42;
insert_breakpoints (); /* Needed to get correct instruction in cache */
- proceed (entry_pt, -1, 0);
+
+ clear_proceed_status ();
+
+ /* NB: Entry point already set by sim_create_inferior. */
+ proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
}
/* The open routine takes the rest of the parameters from the command,
char *args;
int from_tty;
{
- if (sr_get_debug ())
- printf_filtered ("gdbsim_open: args \"%s\"\n", args);
+ int len;
+ char *arg_buf;
+ char **argv;
- if (sim_open (args) != 0)
+ if (sr_get_debug ())
+ printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
+
+ /* Remove current simulator if one exists. Only do this if the simulator
+ has been opened because sim_close requires it.
+ This is important because the call to push_target below will cause
+ sim_close to be called if the simulator is already open, but push_target
+ is called after sim_open! We can't move the call to push_target before
+ the call to sim_open because sim_open may invoke `error'. */
+ if (gdbsim_desc != NULL)
+ unpush_target (&gdbsim_ops);
+
+ len = (7 + 1 /* gdbsim */
+ + strlen (" -E little")
+ + strlen (" --architecture=xxxxxxxxxx")
+ + (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 both selectable
+ and explicitly specified by the user (not auto detected). */
+ if (TARGET_BYTE_ORDER_SELECTABLE_P
+ && !TARGET_BYTE_ORDER_AUTO)
+ {
+ switch (TARGET_BYTE_ORDER)
+ {
+ case BIG_ENDIAN:
+ strcat (arg_buf, " -E big");
+ break;
+ case LITTLE_ENDIAN:
+ strcat (arg_buf, " -E little");
+ break;
+ default:
+ internal_error ("Value of TARGET_BYTE_ORDER unknown");
+ }
+ }
+ /* Specify the architecture of the target when it has been
+ explicitly specified */
+ if (!TARGET_ARCHITECTURE_AUTO)
{
- /* FIXME: This is totally bogus. sim_open should have a way to
- tell us what the error was, so we can tell the user. */
- error ("Unable to initialize simulator (insufficient memory?).");
- return;
+ strcat (arg_buf, " --architecture=");
+ strcat (arg_buf, TARGET_ARCHITECTURE->printable_name);
}
+ /* finally, any explicit args */
+ if (args)
+ {
+ strcat (arg_buf, " "); /* 1 */
+ strcat (arg_buf, args);
+ }
+ argv = buildargv (arg_buf);
+ if (argv == NULL)
+ error ("Insufficient memory available to allocate simulator arg list.");
+ make_cleanup_freeargv (argv);
+
+ init_callbacks ();
+ gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv);
+
+ if (gdbsim_desc == 0)
+ error ("unable to create simulator instance");
push_target (&gdbsim_ops);
target_fetch_registers (-1);
-
printf_filtered ("Connected to the simulator.\n");
}
program_loaded = 0;
- /* FIXME: Need to call sim_close() to close all files and
- delete all mappings. */
+ if (gdbsim_desc != NULL)
+ {
+ sim_close (gdbsim_desc, quitting);
+ gdbsim_desc = NULL;
+ }
+
+ end_callbacks ();
}
/* 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)
+gdbsim_detach (args, from_tty)
char *args;
int from_tty;
{
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. */
+static enum target_signal resume_siggnal;
+static int resume_step;
+
static void
gdbsim_resume (pid, step, siggnal)
- int pid, step, siggnal;
+ int pid, step;
+ enum target_signal siggnal;
{
+ if (inferior_pid != 42)
+ error ("The program is not being run.");
+
if (sr_get_debug ())
printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
- sim_resume (step, siggnal);
+ resume_siggnal = siggnal;
+ resume_step = step;
+}
+
+/* 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 void
+gdbsim_stop ()
+{
+ if (!sim_stop (gdbsim_desc))
+ {
+ quit ();
+ }
+}
+
+/* GDB version of os_poll_quit callback.
+ Taken from gdb/util.c - should be in a library */
+
+static int
+gdb_os_poll_quit (p)
+ host_callback *p;
+{
+ if (ui_loop_hook != NULL)
+ ui_loop_hook (0);
+
+ notice_quit ();
+ if (quit_flag) /* gdb's idea of quit */
+ {
+ quit_flag = 0; /* we've stolen it */
+ return 1;
+ }
+ else if (immediate_quit)
+ {
+ 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. */
+ just as `wait' would. */
+
+static void
+gdbsim_cntrl_c (signo)
+ int signo;
+{
+ gdbsim_stop ();
+}
static int
gdbsim_wait (pid, status)
int pid;
- WAITTYPE *status;
+ struct target_waitstatus *status;
{
- int sigrc;
- enum sim_stop reason;
+ static RETSIGTYPE (*prev_sigint) ();
+ int sigrc = 0;
+ enum sim_stop reason = sim_running;
if (sr_get_debug ())
- printf_filtered ("gdbsim_wait: ");
- sim_stop_reason (&reason, &sigrc);
- if (reason == sim_exited)
- WSETEXIT (*status, sigrc);
- else
- WSETSTOP (*status, sigrc);
- if (sr_get_debug ())
- printf_filtered ("status %d\n", *status);
+ printf_filtered ("gdbsim_wait\n");
+
+#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 (gdbsim_desc, resume_step,
+ target_signal_to_host (resume_siggnal));
+ signal (SIGINT, prev_sigint);
+ resume_step = 0;
+
+ sim_stop_reason (gdbsim_desc, &reason, &sigrc);
+
+ switch (reason)
+ {
+ case sim_exited:
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = sigrc;
+ break;
+ case sim_stopped:
+ switch (sigrc)
+ {
+ case SIGABRT:
+ quit ();
+ break;
+ case SIGINT:
+ case SIGTRAP:
+ default:
+ 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);
+ 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);
+ break;
+ case sim_running:
+ case sim_polling:
+ /* FIXME: Is this correct? */
+ break;
+ }
+
return inferior_pid;
}
char *myaddr;
int len;
int write;
- struct target_ops *target; /* ignored */
+ struct target_ops *target; /* ignored */
{
- if (! program_loaded)
+ if (!program_loaded)
error ("No program loaded.");
if (sr_get_debug ())
{
- printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
- myaddr, memaddr, len, write);
+ /* 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 0x%s, len %d, write %d\n",
+ paddr_nz (memaddr), len, write);
if (sr_get_debug () && write)
- dump_mem(myaddr, len);
+ dump_mem (myaddr, len);
}
if (write)
{
- len = sim_write (memaddr, myaddr, len);
+ len = sim_write (gdbsim_desc, memaddr, myaddr, len);
}
- else
+ else
{
- len = sim_read (memaddr, myaddr, len);
+ len = sim_read (gdbsim_desc, memaddr, myaddr, len);
if (sr_get_debug () && len > 0)
- dump_mem(myaddr, len);
- }
+ dump_mem (myaddr, len);
+ }
return len;
}
{
printf_filtered ("\tAttached to %s running program %s\n",
target_shortname, file);
- sim_info (printf_filtered, 0);
+ sim_info (gdbsim_desc, 0);
}
}
-/* Clear the sims notion of what the break points are. */
+/* Clear the simulator's notion of what the break points are. */
static void
-gdbsim_mourn_inferior ()
-{
+gdbsim_mourn_inferior ()
+{
if (sr_get_debug ())
printf_filtered ("gdbsim_mourn_inferior:\n");
generic_mourn_inferior ();
}
+static int
+gdbsim_insert_breakpoint (addr, contents_cache)
+ CORE_ADDR addr;
+ char *contents_cache;
+{
+#ifdef SIM_HAS_BREAKPOINTS
+ SIM_RC retcode;
+
+ retcode = sim_set_breakpoint (gdbsim_desc, addr);
+
+ switch (retcode)
+ {
+ case SIM_RC_OK:
+ return 0;
+ case SIM_RC_INSUFFICIENT_RESOURCES:
+ return ENOMEM;
+ default:
+ return EIO;
+ }
+#else
+ return memory_insert_breakpoint (addr, contents_cache);
+#endif
+}
+
+static int
+gdbsim_remove_breakpoint (addr, contents_cache)
+ CORE_ADDR addr;
+ char *contents_cache;
+{
+#ifdef SIM_HAS_BREAKPOINTS
+ SIM_RC retcode;
+
+ retcode = sim_clear_breakpoint (gdbsim_desc, addr);
+
+ switch (retcode)
+ {
+ case SIM_RC_OK:
+ case SIM_RC_UNKNOWN_BREAKPOINT:
+ return 0;
+ case SIM_RC_INSUFFICIENT_RESOURCES:
+ return ENOMEM;
+ default:
+ return EIO;
+ }
+#else
+ return memory_remove_breakpoint (addr, contents_cache);
+#endif
+}
+
+/* Pass the command argument through to the simulator verbatim. The
+ simulator must do any command interpretation work. */
+
+void
+simulator_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ if (gdbsim_desc == NULL)
+ {
+
+ /* 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 (gdbsim_desc, args);
+
+ /* Invalidate the register cache, in case the simulator command does
+ something funny. */
+ registers_changed ();
+}
+
/* Define the target subroutine names */
-struct target_ops gdbsim_ops =
-{
- "sim", "simulator",
- "Use the simulator",
- gdbsim_open, gdbsim_close,
- 0, gdbsim_detach, gdbsim_resume, gdbsim_wait, /* attach */
- gdbsim_fetch_register, gdbsim_store_register,
- gdbsim_prepare_to_store,
- gdbsim_xfer_inferior_memory,
- gdbsim_files_info,
- 0, 0, /* Breakpoints */
- 0, 0, 0, 0, 0, /* Terminal handling */
- gdbsim_kill, /* kill */
- gdbsim_load,
- 0, /* lookup_symbol */
- gdbsim_create_inferior, /* create_inferior */
- gdbsim_mourn_inferior, /* mourn_inferior */
- 0, /* can_run */
- 0, /* notice_signals */
- process_stratum, 0, /* next */
- 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
- 0, 0, /* Section pointers */
- OPS_MAGIC, /* Always the last thing */
-};
+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_attach = NULL;
+ gdbsim_ops.to_post_attach = NULL;
+ gdbsim_ops.to_require_attach = NULL;
+ gdbsim_ops.to_detach = gdbsim_detach;
+ gdbsim_ops.to_require_detach = NULL;
+ gdbsim_ops.to_resume = gdbsim_resume;
+ gdbsim_ops.to_wait = gdbsim_wait;
+ gdbsim_ops.to_post_wait = NULL;
+ 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.to_xfer_memory = gdbsim_xfer_inferior_memory;
+ gdbsim_ops.to_files_info = gdbsim_files_info;
+ gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
+ gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
+ gdbsim_ops.to_terminal_init = NULL;
+ gdbsim_ops.to_terminal_inferior = NULL;
+ gdbsim_ops.to_terminal_ours_for_output = NULL;
+ gdbsim_ops.to_terminal_ours = NULL;
+ gdbsim_ops.to_terminal_info = NULL;
+ gdbsim_ops.to_kill = gdbsim_kill;
+ gdbsim_ops.to_load = gdbsim_load;
+ gdbsim_ops.to_lookup_symbol = NULL;
+ gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
+ gdbsim_ops.to_post_startup_inferior = NULL;
+ gdbsim_ops.to_acknowledge_created_inferior = NULL;
+ gdbsim_ops.to_clone_and_follow_inferior = NULL;
+ gdbsim_ops.to_post_follow_inferior_by_clone = NULL;
+ gdbsim_ops.to_insert_fork_catchpoint = NULL;
+ gdbsim_ops.to_remove_fork_catchpoint = NULL;
+ gdbsim_ops.to_insert_vfork_catchpoint = NULL;
+ gdbsim_ops.to_remove_vfork_catchpoint = NULL;
+ gdbsim_ops.to_has_forked = NULL;
+ gdbsim_ops.to_has_vforked = NULL;
+ gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL;
+ gdbsim_ops.to_post_follow_vfork = NULL;
+ gdbsim_ops.to_insert_exec_catchpoint = NULL;
+ gdbsim_ops.to_remove_exec_catchpoint = NULL;
+ gdbsim_ops.to_has_execd = NULL;
+ gdbsim_ops.to_reported_exec_events_per_exec_call = NULL;
+ gdbsim_ops.to_has_exited = NULL;
+ gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
+ gdbsim_ops.to_can_run = 0;
+ gdbsim_ops.to_notice_signals = 0;
+ gdbsim_ops.to_thread_alive = 0;
+ gdbsim_ops.to_stop = gdbsim_stop;
+ gdbsim_ops.to_pid_to_exec_file = NULL;
+ gdbsim_ops.to_core_file_to_sym_file = NULL;
+ gdbsim_ops.to_stratum = process_stratum;
+ gdbsim_ops.DONT_USE = NULL;
+ gdbsim_ops.to_has_all_memory = 1;
+ gdbsim_ops.to_has_memory = 1;
+ gdbsim_ops.to_has_stack = 1;
+ gdbsim_ops.to_has_registers = 1;
+ gdbsim_ops.to_has_execution = 1;
+ gdbsim_ops.to_sections = NULL;
+ gdbsim_ops.to_sections_end = NULL;
+ gdbsim_ops.to_magic = OPS_MAGIC;
+
+#ifdef TARGET_REDEFINE_DEFAULT_OPS
+ TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
+#endif
+}
void
_initialize_remote_sim ()
{
+ init_gdbsim_ops ();
add_target (&gdbsim_ops);
+
+ add_com ("sim <command>", class_obscure, simulator_command,
+ "Send a command to the simulator.");
}
projects / thirdparty / binutils-gdb.git / blobdiff