binutils-gdb/gdb/remote-nrom.c

333 lines
7.6 KiB
C

/* Remote debugging with the XLNT Designs, Inc (XDI) NetROM.
Copyright 1990, 1991, 1992, 1995 Free Software Foundation, Inc.
Contributed by:
Roger Moyers
XLNT Designs, Inc.
15050 Avenue of Science, Suite 106
San Diego, CA 92128
(619)487-9320
roger@xlnt.com
Adapted from work done at Cygnus Support in remote-nindy.c,
later merged in by Stan Shebs at Cygnus.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcmd.h"
#include "serial.h"
#include "target.h"
/* Default ports used to talk with the NetROM. */
#define DEFAULT_NETROM_LOAD_PORT 1236
#define DEFAULT_NETROM_CONTROL_PORT 1237
static void nrom_close PARAMS ((int quitting));
/* New commands. */
static void nrom_passthru PARAMS ((char *, int));
/* We talk to the NetROM over these sockets. */
static serial_t load_desc = NULL;
static serial_t ctrl_desc = NULL;
static int load_port = DEFAULT_NETROM_LOAD_PORT;
static int control_port = DEFAULT_NETROM_CONTROL_PORT;
static char nrom_hostname[100];
/* Forward data declaration. */
extern struct target_ops nrom_ops;
/* Scan input from the remote system, until STRING is found. Print chars that
don't match. */
static int
expect (string)
char *string;
{
char *p = string;
int c;
immediate_quit = 1;
while (1)
{
c = SERIAL_READCHAR (ctrl_desc, 5);
if (c == *p++)
{
if (*p == '\0')
{
immediate_quit = 0;
return 0;
}
}
else
{
fputc_unfiltered (c, gdb_stdout);
p = string;
if (c == *p)
p++;
}
}
}
static void
nrom_kill ()
{
nrom_close (0);
}
static serial_t
open_socket (name, port)
char *name;
int port;
{
char sockname[100];
serial_t desc;
sprintf (sockname, "%s:%d", name, port);
desc = SERIAL_OPEN (sockname);
if (!desc)
perror_with_name (sockname);
return desc;
}
static void
load_cleanup ()
{
SERIAL_CLOSE (load_desc);
load_desc = NULL;
}
/* Download a file specified in ARGS to the netROM. */
static void
nrom_load (args, fromtty)
char *args;
int fromtty;
{
int fd, rd_amt, fsize;
bfd *pbfd;
asection *section;
char *downloadstring = "download 0\n";
struct cleanup *old_chain;
/* Tell the netrom to get ready to download. */
if (SERIAL_WRITE (ctrl_desc, downloadstring, strlen (downloadstring)))
error ("nrom_load: control_send() of `%s' failed", downloadstring);
expect ("Waiting for a connection...\n");
load_desc = open_socket (nrom_hostname, load_port);
old_chain = make_cleanup (load_cleanup, 0);
pbfd = bfd_openr (args, 0);
if (pbfd)
{
make_cleanup (bfd_close, pbfd);
if (!bfd_check_format (pbfd, bfd_object))
error ("\"%s\": not in executable format: %s",
args, bfd_errmsg (bfd_get_error ()));
for (section = pbfd->sections; section; section = section->next)
{
if (bfd_get_section_flags (pbfd, section) & SEC_ALLOC)
{
bfd_vma section_address;
unsigned long section_size;
const char *section_name;
section_name = bfd_get_section_name (pbfd, section);
section_address = bfd_get_section_vma (pbfd, section);
section_size = bfd_section_size (pbfd, section);
if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
{
file_ptr fptr;
printf_filtered ("[Loading section %s at %x (%d bytes)]\n",
section_name, section_address,
section_size);
fptr = 0;
while (section_size > 0)
{
char buffer[1024];
int count;
count = min (section_size, 1024);
bfd_get_section_contents (pbfd, section, buffer, fptr,
count);
SERIAL_WRITE (load_desc, buffer, count);
section_address += count;
fptr += count;
section_size -= count;
}
}
else /* BSS and such */
{
printf_filtered ("[section %s: not loading]\n",
section_name);
}
}
}
}
else
error ("\"%s\": Could not open", args);
do_cleanups (old_chain);
}
/* Open a connection to the remote NetROM devices. */
static void
nrom_open (name, from_tty)
char *name;
int from_tty;
{
int errn;
if (!name || strchr (name, '/') || strchr (name, ':'))
error (
"To open a NetROM connection, you must specify the hostname\n\
or IP address of the NetROM device you wish to use.");
strcpy (nrom_hostname, name);
target_preopen (from_tty);
unpush_target (&nrom_ops);
ctrl_desc = open_socket (nrom_hostname, control_port);
push_target (&nrom_ops);
if (from_tty)
printf_filtered ("Connected to NetROM device \"%s\"\n", nrom_hostname);
}
/* Close out all files and local state before this target loses control. */
static void
nrom_close (quitting)
int quitting;
{
if (load_desc)
SERIAL_CLOSE (load_desc);
if (ctrl_desc)
SERIAL_CLOSE (ctrl_desc);
}
/* Pass arguments directly to the NetROM. */
static void
nrom_passthru (args, fromtty)
char *args;
int fromtty;
{
char buf[1024];
sprintf (buf, "%s\n", args);
if (SERIAL_WRITE (ctrl_desc, buf, strlen (buf)))
error ("nrom_reset: control_send() of `%s'failed", args);
}
static void
nrom_mourn()
{
unpush_target (&nrom_ops);
generic_mourn_inferior ();
}
/* Define the target vector. */
struct target_ops nrom_ops = {
"nrom", /* to_shortname */
"Remote XDI `NetROM' target", /* to_longname */
"Remote debug using a NetROM over Ethernet", /* to_doc */
nrom_open, /* to_open */
nrom_close, /* to_close */
NULL, /* to_attach */
NULL, /* to_detach */
NULL, /* to_resume */
NULL, /* to_wait */
NULL, /* to_fetch_registers */
NULL, /* to_store_registers */
NULL, /* to_prepare_to_store */
NULL, /* to_xfer_memory */
NULL, /* to_files_info */
NULL, /* to_insert_breakpoint */
NULL, /* to_remove_breakpoint */
NULL, /* to_terminal_init */
NULL, /* to_terminal_inferior */
NULL, /* to_terminal_ours_for_output */
NULL, /* to_terminal_ours */
NULL, /* to_terminal_info */
nrom_kill, /* to_kill */
nrom_load, /* to_load */
NULL, /* to_lookup_symbol */
NULL, /* to_create_inferior */
nrom_mourn, /* to_mourn_inferior */
NULL, /* to_can_run */
0, /* to_notice_signals */
0, /* to_thread_alive */
0, /* to_stop */
download_stratum, /* to_stratum */
NULL, /* to_next */
1, /* to_has_all_memory */
1, /* to_has_memory */
1, /* to_has_stack */
1, /* to_has_registers */
0, /* to_has_execution */
NULL, /* sections */
NULL, /* sections_end */
OPS_MAGIC /* to_magic */
};
void
_initialize_remote_nrom ()
{
add_target (&nrom_ops);
add_show_from_set (
add_set_cmd ("nrom_load_port", no_class, var_zinteger, (char *)&load_port,
"Set the port to use for NetROM downloads\n", &setlist),
&showlist);
add_show_from_set (
add_set_cmd ("nrom_control_port", no_class, var_zinteger, (char *)&control_port,
"Set the port to use for NetROM debugger services\n", &setlist),
&showlist);
add_cmd ("nrom", no_class, nrom_passthru,
"Pass arguments as command to NetROM",
&cmdlist);
}