bbcc95bdb1
correctly map floating point registers numbers. * dwarfread.c (locval, new_symbol): Handle variables that are optimized out. * mdebugread.c: Replace all uses of builtin_type_* with mdebug_type_*. Define and initialize mdebug_type_*. * serial.h (serial_close): Add additional argument `really_close'. (SERIAL_CLOSE): Update serial_close call accordingly. (SERIAL_UN_FDOPEN): Use serial_close to handle refcnt properly. * serial.c (serial_close): Handle `really_close'. * serial.h (scb_base): Moved to serial.c, made static. * valops.c (value_addr): Don't coerce arrays. (typecmp): Coerce arrays instead of calling value_addr if necessary.
318 lines
6.1 KiB
C
318 lines
6.1 KiB
C
/* Generic serial interface routines
|
|
Copyright 1992, 1993 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
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
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include "defs.h"
|
|
#include "serial.h"
|
|
|
|
/* Linked list of serial I/O handlers */
|
|
|
|
static struct serial_ops *serial_ops_list = NULL;
|
|
|
|
/* This is the last serial stream opened. Used by connect command. */
|
|
|
|
static serial_t last_serial_opened = NULL;
|
|
|
|
/* Pointer to list of scb's. */
|
|
|
|
static serial_t scb_base;
|
|
|
|
static struct serial_ops *
|
|
serial_interface_lookup (name)
|
|
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(optable)
|
|
struct serial_ops *optable;
|
|
{
|
|
optable->next = serial_ops_list;
|
|
serial_ops_list = optable;
|
|
}
|
|
|
|
/* Open up a device or a network socket, depending upon the syntax of NAME. */
|
|
|
|
serial_t
|
|
serial_open (name)
|
|
const char *name;
|
|
{
|
|
serial_t scb;
|
|
struct serial_ops *ops;
|
|
|
|
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
|
|
ops = serial_interface_lookup ("hardwire");
|
|
|
|
if (!ops)
|
|
return NULL;
|
|
|
|
scb = (serial_t)xmalloc (sizeof (struct _serial_t));
|
|
|
|
scb->ops = ops;
|
|
|
|
scb->bufcnt = 0;
|
|
scb->bufp = scb->buf;
|
|
|
|
if (scb->ops->open(scb, name))
|
|
{
|
|
free (scb);
|
|
return NULL;
|
|
}
|
|
|
|
scb->name = strsave (name);
|
|
scb->next = scb_base;
|
|
scb->refcnt = 1;
|
|
scb_base = scb;
|
|
|
|
last_serial_opened = scb;
|
|
|
|
return scb;
|
|
}
|
|
|
|
serial_t
|
|
serial_fdopen (fd)
|
|
const int fd;
|
|
{
|
|
serial_t 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 = (serial_t)xmalloc (sizeof (struct _serial_t));
|
|
|
|
scb->ops = ops;
|
|
|
|
scb->bufcnt = 0;
|
|
scb->bufp = scb->buf;
|
|
|
|
scb->fd = fd;
|
|
|
|
scb->name = NULL;
|
|
scb->next = scb_base;
|
|
scb->refcnt = 1;
|
|
scb_base = scb;
|
|
|
|
last_serial_opened = scb;
|
|
|
|
return scb;
|
|
}
|
|
|
|
void
|
|
serial_close(scb, really_close)
|
|
serial_t scb;
|
|
int really_close;
|
|
{
|
|
serial_t tmp_scb;
|
|
|
|
last_serial_opened = NULL;
|
|
|
|
/* This is bogus. It's not our fault if you pass us a bad scb...! Rob, you
|
|
should fix your code instead. */
|
|
|
|
if (!scb)
|
|
return;
|
|
|
|
scb->refcnt--;
|
|
if (scb->refcnt > 0)
|
|
return;
|
|
|
|
if (really_close)
|
|
scb->ops->close (scb);
|
|
|
|
if (scb->name)
|
|
free (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;
|
|
}
|
|
|
|
free(scb);
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
The connect command is #if 0 because I hadn't thought of an elegant
|
|
way to wait for I/O on two serial_t's simultaneously. Two solutions
|
|
came to mind:
|
|
|
|
1) Fork, and have have one fork handle the to user direction,
|
|
and have the other hand the to target direction. This
|
|
obviously won't cut it for MSDOS.
|
|
|
|
2) Use something like select. This assumes that stdin and
|
|
the target side can both be waited on via the same
|
|
mechanism. This may not be true for DOS, if GDB is
|
|
talking to the target via a TCP socket.
|
|
-grossman, 8 Jun 93
|
|
*/
|
|
|
|
/* Connect the user directly to the remote system. This command acts just like
|
|
the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
|
|
|
|
static serial_t tty_desc; /* Controlling terminal */
|
|
|
|
static void
|
|
cleanup_tty(ttystate)
|
|
serial_ttystate ttystate;
|
|
{
|
|
printf_unfiltered ("\r\n[Exiting connect mode]\r\n");
|
|
SERIAL_SET_TTY_STATE (tty_desc, ttystate);
|
|
free (ttystate);
|
|
SERIAL_CLOSE (tty_desc);
|
|
}
|
|
|
|
static void
|
|
connect_command (args, fromtty)
|
|
char *args;
|
|
int fromtty;
|
|
{
|
|
int c;
|
|
char cur_esc = 0;
|
|
serial_ttystate ttystate;
|
|
serial_t port_desc; /* TTY port */
|
|
|
|
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)
|
|
{ /* tty input */
|
|
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)
|
|
{ /* Port input */
|
|
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 /* 0 */
|
|
|
|
void
|
|
_initialize_serial ()
|
|
{
|
|
#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 /* 0 */
|
|
}
|