#include "defs.h"
#include <ctype.h>
#include "serial.h"
#include "gdb_string.h"
#include "gdbcmd.h"
extern void _initialize_serial (void);
static int global_serial_debug_p;
static struct serial_ops *serial_ops_list = NULL;
static struct serial *last_serial_opened = NULL;
static struct serial *scb_base;
static char *serial_logfile = NULL;
static struct ui_file *serial_logfp = NULL;
static struct serial_ops *serial_interface_lookup (char *);
static void serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout);
static const char logbase_hex[] = "hex";
static const char logbase_octal[] = "octal";
static const char logbase_ascii[] = "ascii";
static const char *logbase_enums[] =
{logbase_hex, logbase_octal, logbase_ascii, NULL};
static const char *serial_logbase = logbase_ascii;
static int serial_current_type = 0;
#define SERIAL_BREAK 1235
static void
serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout)
{
if (ch_type != serial_current_type)
{
fprintf_unfiltered (stream, "\n%c ", ch_type);
serial_current_type = ch_type;
}
if (serial_logbase != logbase_ascii)
fputc_unfiltered (' ', stream);
switch (ch)
{
case SERIAL_TIMEOUT:
fprintf_unfiltered (stream, "<Timeout: %d seconds>", timeout);
return;
case SERIAL_ERROR:
fprintf_unfiltered (stream, "<Error: %s>", safe_strerror (errno));
return;
case SERIAL_EOF:
fputs_unfiltered ("<Eof>", stream);
return;
case SERIAL_BREAK:
fputs_unfiltered ("<Break>", stream);
return;
default:
if (serial_logbase == logbase_hex)
fprintf_unfiltered (stream, "%02x", ch & 0xff);
else if (serial_logbase == logbase_octal)
fprintf_unfiltered (stream, "%03o", ch & 0xff);
else
switch (ch)
{
case '\\':
fputs_unfiltered ("\\\\", stream);
break;
case '\b':
fputs_unfiltered ("\\b", stream);
break;
case '\f':
fputs_unfiltered ("\\f", stream);
break;
case '\n':
fputs_unfiltered ("\\n", stream);
break;
case '\r':
fputs_unfiltered ("\\r", stream);
break;
case '\t':
fputs_unfiltered ("\\t", stream);
break;
case '\v':
fputs_unfiltered ("\\v", stream);
break;
default:
fprintf_unfiltered (stream, isprint (ch) ? "%c" : "\\x%02x", ch & 0xFF);
break;
}
}
}
void
serial_log_command (const char *cmd)
{
if (!serial_logfp)
return;
serial_current_type = 'c';
fputs_unfiltered ("\nc ", serial_logfp);
fputs_unfiltered (cmd, serial_logfp);
gdb_flush (serial_logfp);
}
static struct serial_ops *
serial_interface_lookup (char *name)
{
struct serial_ops *ops;
for (ops = serial_ops_list; ops; ops = ops->next)
if (strcmp (name, ops->name) == 0)
return ops;
return NULL;
}
void
serial_add_interface (struct serial_ops *optable)
{
optable->next = serial_ops_list;
serial_ops_list = optable;
}
struct serial *
serial_open (const char *name)
{
struct serial *scb;
struct serial_ops *ops;
const char *open_name = name;
for (scb = scb_base; scb; scb = scb->next)
if (scb->name && strcmp (scb->name, name) == 0)
{
scb->refcnt++;
return scb;
}
if (strcmp (name, "pc") == 0)
ops = serial_interface_lookup ("pc");
else if (strchr (name, ':'))
ops = serial_interface_lookup ("tcp");
else if (strncmp (name, "lpt", 3) == 0)
ops = serial_interface_lookup ("parallel");
else if (strncmp (name, "|", 1) == 0)
{
ops = serial_interface_lookup ("pipe");
open_name = name + 1;
}
else
ops = serial_interface_lookup ("hardwire");
if (!ops)
return NULL;
scb = XMALLOC (struct serial);
scb->ops = ops;
scb->bufcnt = 0;
scb->bufp = scb->buf;
if (scb->ops->sopen (scb, open_name))
{
xfree (scb);
return NULL;
}
scb->name = xstrdup (name);
scb->next = scb_base;
scb->refcnt = 1;
scb->debug_p = 0;
scb->async_state = 0;
scb->async_handler = NULL;
scb->async_context = NULL;
scb_base = scb;
last_serial_opened = scb;
if (serial_logfile != NULL)
{
serial_logfp = gdb_fopen (serial_logfile, "w");
if (serial_logfp == NULL)
perror_with_name (serial_logfile);
}
return scb;
}
struct serial *
serial_fdopen (const int fd)
{
struct serial *scb;
struct serial_ops *ops;
for (scb = scb_base; scb; scb = scb->next)
if (scb->fd == fd)
{
scb->refcnt++;
return scb;
}
ops = serial_interface_lookup ("hardwire");
if (!ops)
return NULL;
scb = XMALLOC (struct serial);
scb->ops = ops;
scb->bufcnt = 0;
scb->bufp = scb->buf;
scb->fd = fd;
scb->name = NULL;
scb->next = scb_base;
scb->refcnt = 1;
scb->debug_p = 0;
scb->async_state = 0;
scb->async_handler = NULL;
scb->async_context = NULL;
scb_base = scb;
last_serial_opened = scb;
return scb;
}
static void
do_serial_close (struct serial *scb, int really_close)
{
struct serial *tmp_scb;
last_serial_opened = NULL;
if (serial_logfp)
{
fputs_unfiltered ("\nEnd of log\n", serial_logfp);
serial_current_type = 0;
ui_file_delete (serial_logfp);
serial_logfp = NULL;
}
if (!scb)
return;
scb->refcnt--;
if (scb->refcnt > 0)
return;
if (scb->async_handler != NULL)
serial_async (scb, NULL, NULL);
if (really_close)
scb->ops->sclose (scb);
if (scb->name)
xfree (scb->name);
if (scb_base == scb)
scb_base = scb_base->next;
else
for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)
{
if (tmp_scb->next != scb)
continue;
tmp_scb->next = tmp_scb->next->next;
break;
}
xfree (scb);
}
void
serial_close (struct serial *scb)
{
do_serial_close (scb, 1);
}
void
serial_un_fdopen (struct serial *scb)
{
do_serial_close (scb, 0);
}
int
serial_readchar (struct serial *scb, int timeout)
{
int ch;
if (0 && serial_is_async_p (scb) && timeout < 0)
internal_error (__FILE__, __LINE__,
"serial_readchar: blocking read in async mode");
ch = scb->ops->readchar (scb, timeout);
if (serial_logfp != NULL)
{
serial_logchar (serial_logfp, 'r', ch, timeout);
gdb_flush (serial_logfp);
}
if (serial_debug_p (scb))
{
fprintf_unfiltered (gdb_stdlog, "[");
serial_logchar (gdb_stdlog, 'r', ch, timeout);
fprintf_unfiltered (gdb_stdlog, "]");
gdb_flush (gdb_stdlog);
}
return (ch);
}
int
serial_write (struct serial *scb, const char *str, int len)
{
if (serial_logfp != NULL)
{
int count;
for (count = 0; count < len; count++)
serial_logchar (serial_logfp, 'w', str[count] & 0xff, 0);
gdb_flush (serial_logfp);
}
return (scb->ops->swrite (scb, str, len));
}
void
serial_printf (struct serial *desc, const char *format,...)
{
va_list args;
char *buf;
va_start (args, format);
xvasprintf (&buf, format, args);
serial_write (desc, buf, strlen (buf));
xfree (buf);
va_end (args);
}
int
serial_drain_output (struct serial *scb)
{
return scb->ops->drain_output (scb);
}
int
serial_flush_output (struct serial *scb)
{
return scb->ops->flush_output (scb);
}
int
serial_flush_input (struct serial *scb)
{
return scb->ops->flush_input (scb);
}
int
serial_send_break (struct serial *scb)
{
if (serial_logfp != NULL)
serial_logchar (serial_logfp, 'w', SERIAL_BREAK, 0);
return (scb->ops->send_break (scb));
}
void
serial_raw (struct serial *scb)
{
scb->ops->go_raw (scb);
}
serial_ttystate
serial_get_tty_state (struct serial *scb)
{
return scb->ops->get_tty_state (scb);
}
int
serial_set_tty_state (struct serial *scb, serial_ttystate ttystate)
{
return scb->ops->set_tty_state (scb, ttystate);
}
void
serial_print_tty_state (struct serial *scb,
serial_ttystate ttystate,
struct ui_file *stream)
{
scb->ops->print_tty_state (scb, ttystate, stream);
}
int
serial_noflush_set_tty_state (struct serial *scb,
serial_ttystate new_ttystate,
serial_ttystate old_ttystate)
{
return scb->ops->noflush_set_tty_state (scb, new_ttystate, old_ttystate);
}
int
serial_setbaudrate (struct serial *scb, int rate)
{
return scb->ops->setbaudrate (scb, rate);
}
int
serial_setstopbits (struct serial *scb, int num)
{
return scb->ops->setstopbits (scb, num);
}
int
serial_can_async_p (struct serial *scb)
{
return (scb->ops->async != NULL);
}
int
serial_is_async_p (struct serial *scb)
{
return (scb->ops->async != NULL) && (scb->async_handler != NULL);
}
void
serial_async (struct serial *scb,
serial_event_ftype *handler,
void *context)
{
if ((scb->async_handler == NULL)
!= (handler == NULL))
scb->ops->async (scb, handler != NULL);
scb->async_handler = handler;
scb->async_context = context;
}
int
deprecated_serial_fd (struct serial *scb)
{
if (scb->fd < 0)
{
internal_error (__FILE__, __LINE__,
"serial: FD not valid");
}
return scb->fd;
}
void
serial_debug (struct serial *scb, int debug_p)
{
scb->debug_p = debug_p;
}
int
serial_debug_p (struct serial *scb)
{
return scb->debug_p || global_serial_debug_p;
}
#if 0
static struct serial *tty_desc;
static void
cleanup_tty (serial_ttystate ttystate)
{
printf_unfiltered ("\r\n[Exiting connect mode]\r\n");
serial_set_tty_state (tty_desc, ttystate);
xfree (ttystate);
serial_close (tty_desc);
}
static void
connect_command (char *args, int fromtty)
{
int c;
char cur_esc = 0;
serial_ttystate ttystate;
struct serial *port_desc;
dont_repeat ();
if (args)
fprintf_unfiltered (gdb_stderr, "This command takes no args. They have been ignored.\n");
printf_unfiltered ("[Entering connect mode. Use ~. or ~^D to escape]\n");
tty_desc = serial_fdopen (0);
port_desc = last_serial_opened;
ttystate = serial_get_tty_state (tty_desc);
serial_raw (tty_desc);
serial_raw (port_desc);
make_cleanup (cleanup_tty, ttystate);
while (1)
{
int mask;
mask = serial_wait_2 (tty_desc, port_desc, -1);
if (mask & 2)
{
char cx;
while (1)
{
c = serial_readchar (tty_desc, 0);
if (c == SERIAL_TIMEOUT)
break;
if (c < 0)
perror_with_name ("connect");
cx = c;
serial_write (port_desc, &cx, 1);
switch (cur_esc)
{
case 0:
if (c == '\r')
cur_esc = c;
break;
case '\r':
if (c == '~')
cur_esc = c;
else
cur_esc = 0;
break;
case '~':
if (c == '.' || c == '\004')
return;
else
cur_esc = 0;
}
}
}
if (mask & 1)
{
char cx;
while (1)
{
c = serial_readchar (port_desc, 0);
if (c == SERIAL_TIMEOUT)
break;
if (c < 0)
perror_with_name ("connect");
cx = c;
serial_write (tty_desc, &cx, 1);
}
}
}
}
#endif
static struct cmd_list_element *serial_set_cmdlist;
static struct cmd_list_element *serial_show_cmdlist;
static void
serial_set_cmd (char *args, int from_tty)
{
printf_unfiltered ("\"set serial\" must be followed by the name of a command.\n");
help_list (serial_set_cmdlist, "set serial ", -1, gdb_stdout);
}
static void
serial_show_cmd (char *args, int from_tty)
{
cmd_show_list (serial_show_cmdlist, from_tty, "");
}
void
_initialize_serial (void)
{
#if 0
add_com ("connect", class_obscure, connect_command,
"Connect the terminal directly up to the command monitor.\n\
Use <CR>~. or <CR>~^D to break out.");
#endif
add_prefix_cmd ("serial", class_maintenance, serial_set_cmd, "\
Set default serial/parallel port configuration.",
&serial_set_cmdlist, "set serial ",
0,
&setlist);
add_prefix_cmd ("serial", class_maintenance, serial_show_cmd, "\
Show default serial/parallel port configuration.",
&serial_show_cmdlist, "show serial ",
0,
&showlist);
add_show_from_set
(add_set_cmd ("remotelogfile", no_class,
var_filename, (char *) &serial_logfile,
"Set filename for remote session recording.\n\
This file is used to record the remote session for future playback\n\
by gdbserver.",
&setlist),
&showlist);
add_show_from_set
(add_set_enum_cmd ("remotelogbase", no_class,
logbase_enums, &serial_logbase,
"Set numerical base for remote session logging",
&setlist),
&showlist);
add_show_from_set (add_set_cmd ("serial",
class_maintenance,
var_zinteger,
(char *)&global_serial_debug_p,
"Set serial debugging.\n\
When non-zero, serial port debugging is enabled.", &setdebuglist),
&showdebuglist);
}