/* Generic remote debugging interface for simulators.
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Steve Chamberlain (sac@cygnus.com).
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "gdb/callback.h"
#include "gdb/remote-sim.h"
-#include "remote-utils.h"
#include "command.h"
#include "regcache.h"
#include "gdb_assert.h"
#include "sim-regno.h"
#include "arch-utils.h"
+#include "readline/readline.h"
/* Prototypes */
static void gdb_os_error (host_callback *, const char *, ...);
-static void gdbsim_fetch_register (int regno);
+static void gdbsim_fetch_register (struct regcache *regcache, int regno);
-static void gdbsim_store_register (int regno);
+static void gdbsim_store_register (struct regcache *regcache, int regno);
static void gdbsim_kill (void);
static ptid_t gdbsim_wait (ptid_t ptid, struct target_waitstatus *status);
-static void gdbsim_prepare_to_store (void);
+static void gdbsim_prepare_to_store (struct regcache *regcache);
static void gdbsim_files_info (struct target_ops *target);
one2one_register_sim_regno (int regnum)
{
/* Only makes sense to supply raw registers. */
- gdb_assert (regnum >= 0 && regnum < NUM_REGS);
+ gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (current_gdbarch));
return regnum;
}
static void
-gdbsim_fetch_register (int regno)
+gdbsim_fetch_register (struct regcache *regcache, int regno)
{
if (regno == -1)
{
- for (regno = 0; regno < NUM_REGS; regno++)
- gdbsim_fetch_register (regno);
+ for (regno = 0; regno < gdbarch_num_regs (current_gdbarch); regno++)
+ gdbsim_fetch_register (regcache, regno);
return;
}
- switch (REGISTER_SIM_REGNO (regno))
+ switch (gdbarch_register_sim_regno (current_gdbarch, regno))
{
case LEGACY_SIM_REGNO_IGNORE:
break;
char buf[MAX_REGISTER_SIZE];
int nr_bytes;
memset (buf, 0, MAX_REGISTER_SIZE);
- regcache_raw_supply (current_regcache, regno, buf);
- set_register_cached (regno, -1);
+ 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 < NUM_REGS);
+ gdb_assert (regno >= 0 && regno < gdbarch_num_regs (current_gdbarch));
memset (buf, 0, MAX_REGISTER_SIZE);
nr_bytes = sim_fetch_register (gdbsim_desc,
- REGISTER_SIM_REGNO (regno),
- buf, register_size (current_gdbarch, regno));
+ gdbarch_register_sim_regno
+ (current_gdbarch, regno),
+ buf,
+ register_size (current_gdbarch, regno));
if (nr_bytes > 0 && nr_bytes != register_size (current_gdbarch, 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),
+ gdbarch_register_name (current_gdbarch, regno),
+ regno,
+ gdbarch_register_sim_regno
+ (current_gdbarch, regno),
nr_bytes, register_size (current_gdbarch, regno));
warn_user = 0;
}
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 (current_regcache, regno, buf);
- if (sr_get_debug ())
+ regcache_raw_supply (regcache, regno, buf);
+ if (remote_debug)
{
printf_filtered ("gdbsim_fetch_register: %d", regno);
/* FIXME: We could print something more intelligible. */
static void
-gdbsim_store_register (int regno)
+gdbsim_store_register (struct regcache *regcache, int regno)
{
if (regno == -1)
{
- for (regno = 0; regno < NUM_REGS; regno++)
- gdbsim_store_register (regno);
+ for (regno = 0; regno < gdbarch_num_regs (current_gdbarch); regno++)
+ gdbsim_store_register (regcache, regno);
return;
}
- else if (REGISTER_SIM_REGNO (regno) >= 0)
+ else if (gdbarch_register_sim_regno (current_gdbarch, regno) >= 0)
{
char tmp[MAX_REGISTER_SIZE];
int nr_bytes;
- deprecated_read_register_gen (regno, tmp);
+ regcache_cooked_read (regcache, regno, tmp);
nr_bytes = sim_store_register (gdbsim_desc,
- REGISTER_SIM_REGNO (regno),
+ gdbarch_register_sim_regno
+ (current_gdbarch, regno),
tmp, register_size (current_gdbarch, regno));
if (nr_bytes > 0 && nr_bytes != register_size (current_gdbarch, regno))
internal_error (__FILE__, __LINE__,
/* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
indicating that GDB and the SIM have different ideas about
which registers are fetchable. */
- if (sr_get_debug ())
+ if (remote_debug)
{
printf_filtered ("gdbsim_store_register: %d", regno);
/* FIXME: We could print something more intelligible. */
static void
gdbsim_kill (void)
{
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_kill\n");
/* There is no need to `kill' running simulator - the simulator is
- not running */
- inferior_ptid = null_ptid;
+ 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 (char *prog, int fromtty)
+gdbsim_load (char *args, int fromtty)
{
- if (sr_get_debug ())
- printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
+ char **argv = buildargv (args);
+ char *prog;
- inferior_ptid = null_ptid;
+ if (argv == NULL)
+ nomem (0);
+
+ 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);
/* FIXME: We will print two messages on error.
Need error to either not print anything if passed NULL or need
if (!program_loaded)
warning (_("No program loaded."));
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
(exec_file ? exec_file : "(NULL)"),
args);
sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
inferior_ptid = pid_to_ptid (42);
+ target_mark_running (&gdbsim_ops);
insert_breakpoints (); /* Needed to get correct instruction in cache */
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 *arg_buf;
char **argv;
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
/* Remove current simulator if one exists. Only do this if the simulator
+ 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). */
+ /* 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:
error (_("unable to create simulator instance"));
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;
+ target_mark_exited (&gdbsim_ops);
}
/* Does whatever cleanup is required for a target that we are no longer
static void
gdbsim_close (int quitting)
{
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_close: quitting %d\n", quitting);
program_loaded = 0;
static void
gdbsim_detach (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 (PIDGET (inferior_ptid) != 42)
error (_("The program is not being run."));
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
resume_siggnal = siggnal;
int sigrc = 0;
enum sim_stop reason = sim_running;
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_wait\n");
#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
debugged. */
static void
-gdbsim_prepare_to_store (void)
+gdbsim_prepare_to_store (struct regcache *regcache)
{
/* Do nothing, since we can store individual regs */
}
int write, struct mem_attrib *attrib,
struct target_ops *target)
{
+ /* If no program is running yet, then ignore the simulator for
+ memory. Pass the request down to the next target, hopefully
+ an exec file. */
+ if (!target_has_execution)
+ return 0;
+
if (!program_loaded)
error (_("No program loaded."));
- if (sr_get_debug ())
+ if (remote_debug)
{
/* 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)
+ if (remote_debug && write)
dump_mem (myaddr, len);
}
else
{
len = sim_read (gdbsim_desc, memaddr, myaddr, len);
- if (sr_get_debug () && len > 0)
+ if (remote_debug && len > 0)
dump_mem (myaddr, len);
}
return len;
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)
static void
gdbsim_mourn_inferior (void)
{
- if (sr_get_debug ())
+ if (remote_debug)
printf_filtered ("gdbsim_mourn_inferior:\n");
remove_breakpoints ();
+ target_mark_exited (&gdbsim_ops);
generic_mourn_inferior ();
}
-static int
-gdbsim_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
-{
- return memory_insert_breakpoint (addr, contents_cache);
-}
-
-static int
-gdbsim_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
-{
- return memory_remove_breakpoint (addr, contents_cache);
-}
-
/* Pass the command argument through to the simulator verbatim. The
simulator must do any command interpretation work. */
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 = gdbsim_insert_breakpoint;
- gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
+ 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;