/* Generic remote debugging interface for simulators.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Steve Chamberlain (sac@cygnus.com).
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
+ 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,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
#include "sim-regno.h"
#include "arch-utils.h"
#include "readline/readline.h"
+#include "gdbthread.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);
static void gdbsim_mourn_inferior (void);
-static void gdbsim_stop (void);
+static void gdbsim_stop (ptid_t ptid);
void simulator_command (char *args, int from_tty);
back to the other sim_foo routines. */
static SIM_DESC gdbsim_desc = 0;
+/* This is the ptid we use while we're connected to the simulator.
+ Its value is arbitrary, as the simulator target don't have a notion
+ or processes or threads, but we need something non-null to place in
+ inferior_ptid. */
+static ptid_t remote_sim_ptid;
+
static void
dump_mem (char *buf, int len)
{
}
int
-one2one_register_sim_regno (int regnum)
+one2one_register_sim_regno (struct gdbarch *gdbarch, int regnum)
{
/* Only makes sense to supply raw registers. */
- gdb_assert (regnum >= 0 && regnum < NUM_REGS);
+ gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch));
return regnum;
}
static void
-gdbsim_fetch_register (int regno)
+gdbsim_fetch_register (struct regcache *regcache, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
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 (regcache, regno);
return;
}
- switch (REGISTER_SIM_REGNO (regno))
+ switch (gdbarch_register_sim_regno (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 (gdbarch));
memset (buf, 0, MAX_REGISTER_SIZE);
nr_bytes = sim_fetch_register (gdbsim_desc,
- REGISTER_SIM_REGNO (regno),
- buf, register_size (current_gdbarch, regno));
- if (nr_bytes > 0 && nr_bytes != register_size (current_gdbarch, regno) && warn_user)
+ 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))",
- REGISTER_NAME (regno),
- regno, REGISTER_SIM_REGNO (regno),
- nr_bytes, register_size (current_gdbarch, regno));
+ 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'
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);
+ 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 (current_gdbarch, regno));
+ dump_mem (buf, register_size (gdbarch, regno));
}
break;
}
static void
-gdbsim_store_register (int regno)
+gdbsim_store_register (struct regcache *regcache, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
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 (regcache, regno);
return;
}
- else if (REGISTER_SIM_REGNO (regno) >= 0)
+ else if (gdbarch_register_sim_regno (gdbarch, regno) >= 0)
{
char tmp[MAX_REGISTER_SIZE];
int nr_bytes;
- regcache_cooked_read (current_regcache, regno, tmp);
+ regcache_cooked_read (regcache, regno, tmp);
nr_bytes = sim_store_register (gdbsim_desc,
- REGISTER_SIM_REGNO (regno),
- tmp, register_size (current_gdbarch, regno));
- if (nr_bytes > 0 && nr_bytes != register_size (current_gdbarch, regno))
+ 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"));
/* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
{
printf_filtered ("gdbsim_store_register: %d", regno);
/* FIXME: We could print something more intelligible. */
- dump_mem (tmp, register_size (current_gdbarch, regno));
+ dump_mem (tmp, register_size (gdbarch, regno));
}
}
}
(exec_file ? exec_file : "(NULL)"),
args);
- gdbsim_kill ();
+ if (ptid_equal (inferior_ptid, remote_sim_ptid))
+ gdbsim_kill ();
remove_breakpoints ();
init_wait_for_inferior ();
argv = NULL;
sim_create_inferior (gdbsim_desc, exec_bfd, argv, env);
- inferior_ptid = pid_to_ptid (42);
+ inferior_ptid = remote_sim_ptid;
+ add_thread_silent (inferior_ptid);
+
target_mark_running (&gdbsim_ops);
insert_breakpoints (); /* Needed to get correct instruction in cache */
end_callbacks ();
generic_mourn_inferior ();
+ delete_thread_silent (remote_sim_ptid);
}
/* Takes a program previously attached to and detaches it.
static void
gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
- if (PIDGET (inferior_ptid) != 42)
+ if (!ptid_equal (inferior_ptid, remote_sim_ptid))
error (_("The program is not being run."));
if (remote_debug)
For simulators that do not support this operation, just abort */
static void
-gdbsim_stop (void)
+gdbsim_stop (ptid_t ptid)
{
if (!sim_stop (gdbsim_desc))
{
static void
gdbsim_cntrl_c (int signo)
{
- gdbsim_stop ();
+ gdbsim_stop (remote_sim_ptid);
}
static ptid_t
debugged. */
static void
-gdbsim_prepare_to_store (void)
+gdbsim_prepare_to_store (struct regcache *regcache)
{
/* Do nothing, since we can store individual regs */
}
remove_breakpoints ();
target_mark_exited (&gdbsim_ops);
generic_mourn_inferior ();
+ delete_thread_silent (remote_sim_ptid);
}
/* Pass the command argument through to the simulator verbatim. The
registers_changed ();
}
+/* Check to see if a thread is still alive. */
+
+static int
+gdbsim_thread_alive (ptid_t ptid)
+{
+ if (ptid_equal (ptid, 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 (ptid_t ptid)
+{
+ static char buf[64];
+
+ if (ptid_equal (remote_sim_ptid, ptid))
+ {
+ xsnprintf (buf, sizeof buf, "Thread <main>");
+ return buf;
+ }
+
+ return normal_pid_to_str (ptid);
+}
+
/* Define the target subroutine names */
struct target_ops gdbsim_ops;
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 = 1;
gdbsim_ops.to_has_memory = 1;
gdbsim_ops.to_has_registers = 1;
gdbsim_ops.to_has_execution = 1;
gdbsim_ops.to_magic = OPS_MAGIC;
-
-#ifdef TARGET_REDEFINE_DEFAULT_OPS
- TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
-#endif
}
void
add_com ("sim", class_obscure, simulator_command,
_("Send a command to the simulator."));
+
+ /* Yes, 42000 is arbitrary. The only sense out of it, is that it
+ isn't 0. */
+ remote_sim_ptid = ptid_build (42000, 0, 42000);
}
projects / deliverable / binutils-gdb.git / blobdiff