#include "defs.h"
#include "inferior.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/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"
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 int gdb_os_write_stdout (host_callback *, const char *, int);
static void gdb_os_flush_stdout (host_callback *);
static int gdb_os_write_stderr (host_callback *, const char *, int);
static void gdb_os_flush_stderr (host_callback *);
static int gdb_os_poll_quit (host_callback *);
static void gdb_os_printf_filtered (host_callback *, const char *, ...);
static void gdb_os_vprintf_filtered (host_callback *, const char *, va_list);
static void gdb_os_evprintf_filtered (host_callback *, const char *, va_list);
static void gdb_os_error (host_callback *, const char *, ...);
static void gdbsim_fetch_register (int regno);
static void gdbsim_store_register (int regno);
static void gdbsim_kill (void);
static void gdbsim_load (char *prog, int fromtty);
static void gdbsim_open (char *args, int from_tty);
static void gdbsim_close (int quitting);
static void gdbsim_detach (char *args, int from_tty);
static void gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal);
static ptid_t gdbsim_wait (ptid_t ptid, struct target_waitstatus *status);
static void gdbsim_prepare_to_store (void);
static void gdbsim_files_info (struct target_ops *target);
static void gdbsim_mourn_inferior (void);
static void gdbsim_stop (void);
void simulator_command (char *args, int from_tty);
extern struct target_ops gdbsim_ops;
static int program_loaded = 0;
static SIM_DESC gdbsim_desc = 0;
static void
dump_mem (char *buf, int len)
{
if (len <= 8)
{
if (len == 8 || len == 4)
{
long 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;
printf_filtered ("\t");
for (i = 0; i < len; i++)
printf_filtered ("0x%x ", buf[i]);
printf_filtered ("\n");
}
}
}
static host_callback gdb_callback;
static int callbacks_initialized = 0;
static void
init_callbacks (void)
{
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;
}
}
static void
end_callbacks (void)
{
if (callbacks_initialized)
{
gdb_callback.shutdown (&gdb_callback);
callbacks_initialized = 0;
}
}
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;
}
static void
gdb_os_flush_stdout (host_callback *p)
{
gdb_flush (gdb_stdtarg);
}
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++)
{
b[0] = buf[i];
b[1] = 0;
fputs_unfiltered (b, gdb_stdtargerr);
}
return len;
}
static void
gdb_os_flush_stderr (host_callback *p)
{
gdb_flush (gdb_stdtargerr);
}
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);
}
static void
gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
{
vfprintf_filtered (gdb_stdout, format, ap);
}
static void
gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
{
vfprintf_filtered (gdb_stderr, format, ap);
}
static void
gdb_os_error (host_callback * p, const char *format,...)
{
if (deprecated_error_hook)
(*deprecated_error_hook) ();
else
{
va_list args;
va_start (args, format);
verror (format, args);
va_end (args);
}
}
int
one2one_register_sim_regno (int regnum)
{
gdb_assert (regnum >= 0 && regnum < NUM_REGS);
return regnum;
}
static void
gdbsim_fetch_register (int regno)
{
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
gdbsim_fetch_register (regno);
return;
}
switch (REGISTER_SIM_REGNO (regno))
{
case LEGACY_SIM_REGNO_IGNORE:
break;
case SIM_REGNO_DOES_NOT_EXIST:
{
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);
break;
}
default:
{
static int warn_user = 1;
char buf[MAX_REGISTER_SIZE];
int nr_bytes;
gdb_assert (regno >= 0 && regno < NUM_REGS);
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)
{
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));
warn_user = 0;
}
regcache_raw_supply (current_regcache, regno, buf);
if (sr_get_debug ())
{
printf_filtered ("gdbsim_fetch_register: %d", regno);
dump_mem (buf, register_size (current_gdbarch, regno));
}
break;
}
}
}
static void
gdbsim_store_register (int regno)
{
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
gdbsim_store_register (regno);
return;
}
else if (REGISTER_SIM_REGNO (regno) >= 0)
{
char tmp[MAX_REGISTER_SIZE];
int nr_bytes;
deprecated_read_register_gen (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))
internal_error (__FILE__, __LINE__,
_("Register size different to expected"));
if (sr_get_debug ())
{
printf_filtered ("gdbsim_store_register: %d", regno);
dump_mem (tmp, register_size (current_gdbarch, regno));
}
}
}
static void
gdbsim_kill (void)
{
if (sr_get_debug ())
printf_filtered ("gdbsim_kill\n");
inferior_ptid = null_ptid;
}
static void
gdbsim_load (char *prog, int fromtty)
{
if (sr_get_debug ())
printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
inferior_ptid = null_ptid;
if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL)
error (_("unable to load program"));
program_loaded = 1;
}
static void
gdbsim_create_inferior (char *exec_file, char *args, char **env, int from_tty)
{
int len;
char *arg_buf, **argv;
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 ? exec_file : "(NULL)"),
args);
gdbsim_kill ();
remove_breakpoints ();
init_wait_for_inferior ();
if (exec_file != NULL)
{
len = strlen (exec_file) + 1 + strlen (args) + 1 + 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_ptid = pid_to_ptid (42);
insert_breakpoints ();
clear_proceed_status ();
proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
}
static void
gdbsim_open (char *args, int from_tty)
{
int len;
char *arg_buf;
char **argv;
if (sr_get_debug ())
printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)");
if (gdbsim_desc != NULL)
unpush_target (&gdbsim_ops);
len = (7 + 1
+ strlen (" -E little")
+ strlen (" --architecture=xxxxxxxxxx")
+ (args ? strlen (args) : 0)
+ 50) ;
arg_buf = (char *) alloca (len);
strcpy (arg_buf, "gdbsim");
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;
}
if (selected_architecture_name () != NULL)
{
strcat (arg_buf, " --architecture=");
strcat (arg_buf, selected_architecture_name ());
}
if (args)
{
strcat (arg_buf, " ");
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");
}
static void
gdbsim_close (int quitting)
{
if (sr_get_debug ())
printf_filtered ("gdbsim_close: quitting %d\n", quitting);
program_loaded = 0;
if (gdbsim_desc != NULL)
{
sim_close (gdbsim_desc, quitting);
gdbsim_desc = NULL;
}
end_callbacks ();
generic_mourn_inferior ();
}
static void
gdbsim_detach (char *args, int from_tty)
{
if (sr_get_debug ())
printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
pop_target ();
if (from_tty)
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
}
static enum target_signal resume_siggnal;
static int resume_step;
static void
gdbsim_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
if (PIDGET (inferior_ptid) != 42)
error (_("The program is not being run."));
if (sr_get_debug ())
printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
resume_siggnal = siggnal;
resume_step = step;
}
static void
gdbsim_stop (void)
{
if (!sim_stop (gdbsim_desc))
{
quit ();
}
}
static int
gdb_os_poll_quit (host_callback *p)
{
if (deprecated_ui_loop_hook != NULL)
deprecated_ui_loop_hook (0);
if (quit_flag)
{
quit_flag = 0;
return 1;
}
else if (immediate_quit)
{
return 1;
}
return 0;
}
static void
gdbsim_cntrl_c (int signo)
{
gdbsim_stop ();
}
static ptid_t
gdbsim_wait (ptid_t ptid, struct target_waitstatus *status)
{
static RETSIGTYPE (*prev_sigint) ();
int sigrc = 0;
enum sim_stop reason = sim_running;
if (sr_get_debug ())
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;
status->value.sig = target_signal_from_host (sigrc);
break;
}
break;
case sim_signalled:
status->kind = TARGET_WAITKIND_SIGNALLED;
status->value.sig = target_signal_from_host (sigrc);
break;
case sim_running:
case sim_polling:
break;
}
return inferior_ptid;
}
static void
gdbsim_prepare_to_store (void)
{
}
static int
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 ())
{
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);
}
if (write)
{
len = sim_write (gdbsim_desc, memaddr, myaddr, len);
}
else
{
len = sim_read (gdbsim_desc, memaddr, myaddr, len);
if (sr_get_debug () && len > 0)
dump_mem (myaddr, len);
}
return len;
}
static void
gdbsim_files_info (struct target_ops *target)
{
char *file = "nothing";
if (exec_bfd)
file = bfd_get_filename (exec_bfd);
if (sr_get_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 (gdbsim_desc, 0);
}
}
static void
gdbsim_mourn_inferior (void)
{
if (sr_get_debug ())
printf_filtered ("gdbsim_mourn_inferior:\n");
remove_breakpoints ();
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);
}
void
simulator_command (char *args, int from_tty)
{
if (gdbsim_desc == NULL)
{
error (_("Not connected to the simulator target"));
}
sim_do_command (gdbsim_desc, args);
registers_changed ();
}
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 = gdbsim_insert_breakpoint;
gdbsim_ops.to_remove_breakpoint = gdbsim_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_stratum = process_stratum;
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_magic = OPS_MAGIC;
#ifdef TARGET_REDEFINE_DEFAULT_OPS
TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops);
#endif
}
void
_initialize_remote_sim (void)
{
init_gdbsim_ops ();
add_target (&gdbsim_ops);
add_com ("sim", class_obscure, simulator_command,
_("Send a command to the simulator."));
}