/* Generic remote debugging interface for simulators.
- Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1993-2014 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Steve Chamberlain (sac@cygnus.com).
#include "defs.h"
#include "inferior.h"
+#include "infrun.h"
#include "value.h"
-#include "gdb_string.h"
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <setjmp.h>
-#include <errno.h>
#include "terminal.h"
#include "target.h"
#include "gdbcore.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"
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 gdbsim_kill (struct target_ops *);
-static void gdbsim_load (char *prog, int fromtty);
+static void gdbsim_load (struct target_ops *self, const char *prog,
+ int fromtty);
-static void gdbsim_open (char *args, int from_tty);
+static void gdbsim_open (const char *args, int from_tty);
-static void gdbsim_close (int quitting);
+static void gdbsim_close (struct target_ops *self);
-static void gdbsim_detach (struct target_ops *ops, char *args, int from_tty);
+static void gdbsim_detach (struct target_ops *ops, const char *args,
+ int from_tty);
-static void gdbsim_prepare_to_store (struct regcache *regcache);
+static void gdbsim_prepare_to_store (struct target_ops *self,
+ struct regcache *regcache);
static void gdbsim_files_info (struct target_ops *target);
static void gdbsim_mourn_inferior (struct target_ops *target);
-static void gdbsim_stop (ptid_t ptid);
+static void gdbsim_stop (struct target_ops *self, ptid_t ptid);
void simulator_command (char *args, int from_tty);
ptid_t remote_sim_ptid;
/* Signal with which to resume. */
- enum target_signal resume_siggnal;
+ enum gdb_signal resume_siggnal;
/* Flag which indicates whether resume should step or not. */
int resume_step;
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
+ if (sim_instance_needed == SIM_INSTANCE_NEEDED
&& (sim_data == NULL || sim_data->gdbsim_desc == NULL))
{
struct inferior *idup;
inf->num);
idup = iterate_over_inferiors (check_for_duplicate_sim_descriptor,
- sim_desc);
+ sim_desc);
if (idup != NULL)
{
/* We don't close the descriptor due to the fact that it's
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);
- }
+ inf->num, idup->num);
+ }
}
if (sim_data == NULL)
{
- sim_data = XZALLOC(struct sim_inferior_data);
+ sim_data = XCNEW(struct sim_inferior_data);
set_inferior_data (inf, sim_inferior_data_key, sim_data);
/* Allocate a ptid for this inferior. */
/* Initialize the other instance variables. */
sim_data->program_loaded = 0;
sim_data->gdbsim_desc = sim_desc;
- sim_data->resume_siggnal = TARGET_SIGNAL_0;
+ 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. */
+ needing a sim instance. */
sim_data->gdbsim_desc = sim_desc;
}
if (pid <= 0)
return NULL;
-
+
inf = find_inferior_pid (pid);
if (inf)
}
static void
-dump_mem (char *buf, int len)
+dump_mem (const gdb_byte *buf, int len)
{
- if (len <= 8)
+ fputs_unfiltered ("\t", gdb_stdlog);
+
+ if (len == 8 || len == 4)
{
- if (len == 8 || len == 4)
- {
- long l[2];
+ uint32_t l[2];
- memcpy (l, buf, len);
- printf_filtered ("\t0x%lx", l[0]);
- if (len == 8)
- printf_filtered (" 0x%lx", l[1]);
- printf_filtered ("\n");
- }
- else
- {
- int i;
+ memcpy (l, buf, len);
+ fprintf_unfiltered (gdb_stdlog, "0x%08x", l[0]);
+ if (len == 8)
+ fprintf_unfiltered (gdb_stdlog, " 0x%08x", l[1]);
+ }
+ else
+ {
+ int i;
- printf_filtered ("\t");
- for (i = 0; i < len; i++)
- printf_filtered ("0x%x ", buf[i]);
- printf_filtered ("\n");
- }
+ for (i = 0; i < len; i++)
+ fprintf_unfiltered (gdb_stdlog, "0x%02x ", buf[i]);
}
+
+ fputs_unfiltered ("\n", gdb_stdlog);
}
/* Initialize gdb_callback. */
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];
+ as an ``unavailable'' register. */
+ gdb_byte 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];
+ gdb_byte buf[MAX_REGISTER_SIZE];
int nr_bytes;
gdb_assert (regno >= 0 && regno < gdbarch_num_regs (gdbarch));
regcache_raw_supply (regcache, regno, buf);
if (remote_debug)
{
- printf_filtered ("gdbsim_fetch_register: %d", regno);
+ fprintf_unfiltered (gdb_stdlog,
+ "gdbsim_fetch_register: %d", regno);
/* FIXME: We could print something more intelligible. */
dump_mem (buf, register_size (gdbarch, regno));
}
}
else if (gdbarch_register_sim_regno (gdbarch, regno) >= 0)
{
- char tmp[MAX_REGISTER_SIZE];
+ gdb_byte tmp[MAX_REGISTER_SIZE];
int nr_bytes;
regcache_cooked_read (regcache, regno, tmp);
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'
- indicating that GDB and the SIM have different ideas about
- which registers are fetchable. */
+ 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);
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_store_register: %d", regno);
/* FIXME: We could print something more intelligible. */
dump_mem (tmp, register_size (gdbarch, regno));
}
gdbsim_kill (struct target_ops *ops)
{
if (remote_debug)
- printf_filtered ("gdbsim_kill\n");
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_kill\n");
/* There is no need to `kill' running simulator - the simulator is
not running. Mourning it is enough. */
GDB's symbol tables to match. */
static void
-gdbsim_load (char *args, int fromtty)
+gdbsim_load (struct target_ops *self, const char *args, int fromtty)
{
char **argv;
- char *prog;
+ const char *prog;
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
error (_("GDB sim does not yet support a load offset."));
if (remote_debug)
- printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
+ fprintf_unfiltered (gdb_stdlog, "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
warning (_("No program loaded."));
if (remote_debug)
- printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
- (exec_file ? exec_file : "(NULL)"),
- args);
+ fprintf_unfiltered (gdb_stdlog,
+ "gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
+ (exec_file ? exec_file : "(NULL)"),
+ args);
if (ptid_equal (inferior_ptid, sim_data->remote_sim_ptid))
gdbsim_kill (target);
}
else
argv = NULL;
- sim_create_inferior (sim_data->gdbsim_desc, exec_bfd, argv, env);
+
+ if (!have_inferiors ())
+ init_thread_list ();
+
+ 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));
insert_breakpoints (); /* Needed to get correct instruction
in cache. */
- clear_proceed_status ();
+ clear_proceed_status (0);
}
/* The open routine takes the rest of the parameters from the command,
/* Called when selecting the simulator. E.g. (gdb) target sim name. */
static void
-gdbsim_open (char *args, int from_tty)
+gdbsim_open (const char *args, int from_tty)
{
int len;
char *arg_buf;
SIM_DESC gdbsim_desc;
if (remote_debug)
- printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
+ fprintf_unfiltered (gdb_stdlog,
+ "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
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);
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)
{
gdbsim_close_inferior (struct inferior *inf, void *arg)
{
struct sim_inferior_data *sim_data = inferior_data (inf,
- sim_inferior_data_key);
+ sim_inferior_data_key);
if (sim_data != NULL)
{
ptid_t ptid = sim_data->remote_sim_ptid;
return 0;
}
-/* Does whatever cleanup is required for a target that we are no longer
- going to be calling. Argument says whether we are quitting gdb and
- should not get hung in case of errors, or whether we want a clean
- termination even if it takes a while. This routine is automatically
- 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. */
static void
-gdbsim_close (int quitting)
+gdbsim_close (struct target_ops *self)
{
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);
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_close\n");
iterate_over_inferiors (gdbsim_close_inferior, NULL);
Use this when you want to detach and do something else with your gdb. */
static void
-gdbsim_detach (struct target_ops *ops, char *args, int from_tty)
+gdbsim_detach (struct target_ops *ops, const char *args, int from_tty)
{
if (remote_debug)
- printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_detach: args \"%s\"\n", args);
- pop_target (); /* calls gdbsim_close to do the real work */
+ unpush_target (ops); /* calls gdbsim_close to do the real work */
if (from_tty)
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
}
struct resume_data
{
- enum target_signal siggnal;
+ enum gdb_signal siggnal;
int step;
};
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);
+ fprintf_unfiltered (gdb_stdlog,
+ _("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
static void
gdbsim_resume (struct target_ops *ops,
- ptid_t ptid, int step, enum target_signal siggnal)
+ ptid_t ptid, int step, enum gdb_signal siggnal)
{
struct resume_data rd;
struct sim_inferior_data *sim_data
}
static void
-gdbsim_stop (ptid_t ptid)
+gdbsim_stop (struct target_ops *self, ptid_t ptid)
{
struct sim_inferior_data *sim_data;
if (deprecated_ui_loop_hook != NULL)
deprecated_ui_loop_hook (0);
- if (quit_flag) /* gdb's idea of quit */
- {
- quit_flag = 0; /* we've stolen it */
- return 1;
- }
- else if (immediate_quit)
+ if (check_quit_flag ()) /* gdb's idea of quit */
{
+ clear_quit_flag (); /* we've stolen it */
return 1;
}
return 0;
static void
gdbsim_cntrl_c (int signo)
{
- gdbsim_stop (minus_one_ptid);
+ gdbsim_stop (NULL, minus_one_ptid);
}
static ptid_t
}
if (remote_debug)
- printf_filtered ("gdbsim_wait\n");
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_wait\n");
#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
{
prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
#endif
sim_resume (sim_data->gdbsim_desc, sim_data->resume_step,
- sim_data->resume_siggnal);
+ sim_data->resume_siggnal);
signal (SIGINT, prev_sigint);
sim_data->resume_step = 0;
case sim_stopped:
switch (sigrc)
{
- case TARGET_SIGNAL_ABRT:
+ case GDB_SIGNAL_ABRT:
quit ();
break;
- case TARGET_SIGNAL_INT:
- case TARGET_SIGNAL_TRAP:
+ case GDB_SIGNAL_INT:
+ case GDB_SIGNAL_TRAP:
default:
status->kind = TARGET_WAITKIND_STOPPED;
status->value.sig = sigrc;
debugged. */
static void
-gdbsim_prepare_to_store (struct regcache *regcache)
+gdbsim_prepare_to_store (struct target_ops *self, struct regcache *regcache)
{
/* 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. */
+/* Helper for gdbsim_xfer_partial that handles memory transfers.
+ Arguments are like target_xfer_partial. */
-static int
-gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len,
- int write, struct mem_attrib *attrib,
- struct target_ops *target)
+static enum target_xfer_status
+gdbsim_xfer_memory (struct target_ops *target,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
{
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
+ int l;
/* 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;
+ return TARGET_XFER_EOF;
if (!sim_data->program_loaded)
error (_("No program loaded."));
gdb_assert (sim_data->gdbsim_desc != NULL);
if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "gdbsim_xfer_memory: readbuf %s, writebuf %s, "
+ "memaddr %s, len %s\n",
+ host_address_to_string (readbuf),
+ host_address_to_string (writebuf),
+ paddress (target_gdbarch (), memaddr),
+ pulongest (len));
+
+ if (writebuf)
{
- /* 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 (remote_debug && len > 0)
+ dump_mem (writebuf, len);
+ l = sim_write (sim_data->gdbsim_desc, memaddr, writebuf, len);
}
-
- if (write)
+ else
+ {
+ l = sim_read (sim_data->gdbsim_desc, memaddr, readbuf, len);
+ if (remote_debug && len > 0)
+ dump_mem (readbuf, len);
+ }
+ if (l > 0)
{
- len = sim_write (sim_data->gdbsim_desc, memaddr, myaddr, len);
+ *xfered_len = (ULONGEST) l;
+ return TARGET_XFER_OK;
}
+ else if (l == 0)
+ return TARGET_XFER_EOF;
else
+ return TARGET_XFER_E_IO;
+}
+
+/* Target to_xfer_partial implementation. */
+
+static enum target_xfer_status
+gdbsim_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
+{
+ switch (object)
{
- len = sim_read (sim_data->gdbsim_desc, memaddr, myaddr, len);
- if (remote_debug && len > 0)
- dump_mem (myaddr, len);
+ case TARGET_OBJECT_MEMORY:
+ return gdbsim_xfer_memory (ops, readbuf, writebuf, offset, len,
+ xfered_len);
+
+ default:
+ return TARGET_XFER_E_IO;
}
- return len;
}
static void
file = bfd_get_filename (exec_bfd);
if (remote_debug)
- printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_files_info: file \"%s\"\n", file);
if (exec_bfd)
{
- printf_filtered ("\tAttached to %s running program %s\n",
- target_shortname, file);
+ fprintf_unfiltered (gdb_stdlog, "\tAttached to %s running program %s\n",
+ target_shortname, file);
sim_info (sim_data->gdbsim_desc, 0);
}
}
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
if (remote_debug)
- printf_filtered ("gdbsim_mourn_inferior:\n");
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_mourn_inferior:\n");
remove_breakpoints ();
generic_mourn_inferior ();
{
/* 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). */
+ 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. */
+ 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"));
}
registers_changed ();
}
+static VEC (char_ptr) *
+sim_command_completer (struct cmd_list_element *ignore, const char *text,
+ const 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
/* Simulator memory may be accessed after the program has been loaded. */
-int
+static int
gdbsim_has_all_memory (struct target_ops *ops)
{
struct sim_inferior_data *sim_data
return 1;
}
-int
+static int
gdbsim_has_memory (struct target_ops *ops)
{
struct sim_inferior_data *sim_data
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_xfer_partial = gdbsim_xfer_partial;
gdbsim_ops.to_files_info = gdbsim_files_info;
gdbsim_ops.to_insert_breakpoint = memory_insert_breakpoint;
gdbsim_ops.to_remove_breakpoint = memory_remove_breakpoint;
void
_initialize_remote_sim (void)
{
+ struct cmd_list_element *c;
+
init_gdbsim_ops ();
add_target (&gdbsim_ops);
- add_com ("sim", 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 (sim_inferior_data_cleanup);
+ = register_inferior_data_with_cleanup (NULL, sim_inferior_data_cleanup);
}
projects / platform / upstream / binutils.git / blobdiff