binutils-gdb/gdb/remote-os9k.c

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/* Remote debugging interface for boot monitors, for GDB.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GDB.
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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.
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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.
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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. */
/* This file was derived from remote-eb.c, which did a similar job, but for
an AMD-29K running EBMON. That file was in turn derived from remote.c
as mentioned in the following comment (left in for comic relief):
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"This is like remote.c but is for a different situation--
having a PC running os9000 hook up with a unix machine with
a serial line, and running ctty com2 on the PC. os9000 has a debug
monitor called ROMBUG running. Not to mention that the PC
has PC/NFS, so it can access the same executables that gdb can,
over the net in real time."
In reality, this module talks to a debug monitor called 'ROMBUG', which
We communicate with ROMBUG via a direct serial line, the network version
of ROMBUG is not available yet.
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*/
/* FIXME This file needs to be rewritten if it's to work again, either
to self-contained or to use the new monitor interface. */
#include "defs.h"
#include "gdbcore.h"
#include "target.h"
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#include "gdb_string.h"
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#include <sys/types.h>
#include "command.h"
#include "serial.h"
#include "monitor.h"
#include "remote-utils.h"
#include "symtab.h"
#include "symfile.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "regcache.h"
struct cmd_list_element *showlist;
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extern struct target_ops rombug_ops; /* Forward declaration */
extern struct monitor_ops rombug_cmds; /* Forward declaration */
extern struct cmd_list_element *setlist;
extern struct cmd_list_element *unsetlist;
extern int attach_flag;
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static void rombug_close ();
static void rombug_fetch_register ();
static void rombug_fetch_registers ();
static void rombug_store_register ();
#if 0
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static int sr_get_debug (); /* flag set by "set remotedebug" */
#endif
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static int hashmark; /* flag set by "set hash" */
static int rombug_is_open = 0;
/* FIXME: Replace with sr_get_debug (). */
#define LOG_FILE "monitor.log"
FILE *log_file;
static int monitor_log = 0;
static int tty_xon = 0;
static int tty_xoff = 0;
static int timeout = 10;
static int is_trace_mode = 0;
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/* Descriptor for I/O to remote machine. Initialize it to NULL */
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static struct serial *monitor_desc = NULL;
static CORE_ADDR bufaddr = 0;
static int buflen = 0;
static char readbuf[16];
/* Send data to monitor. Works just like printf. */
static void
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printf_monitor (char *pattern,...)
{
va_list args;
char buf[200];
int i;
va_start (args, pattern);
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vsprintf (buf, pattern, args);
va_end (args);
if (serial_write (monitor_desc, buf, strlen (buf)))
fprintf (stderr, "serial_write failed: %s\n", safe_strerror (errno));
}
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/* Read a character from the remote system, doing all the fancy timeout stuff */
static int
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readchar (int timeout)
{
int c;
c = serial_readchar (monitor_desc, timeout);
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if (sr_get_debug ())
putchar (c & 0x7f);
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if (monitor_log && isascii (c))
putc (c & 0x7f, log_file);
if (c >= 0)
return c & 0x7f;
if (c == SERIAL_TIMEOUT)
{
if (timeout == 0)
return c; /* Polls shouldn't generate timeout errors */
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error ("Timeout reading from remote system.");
}
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perror_with_name ("remote-monitor");
}
/* Scan input from the remote system, until STRING is found. If DISCARD is
non-zero, then discard non-matching input, else print it out.
Let the user break out immediately. */
static void
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expect (char *string, int discard)
{
char *p = string;
int c;
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if (sr_get_debug ())
printf ("Expecting \"%s\"\n", string);
immediate_quit++;
while (1)
{
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c = readchar (timeout);
if (!isascii (c))
continue;
if (c == *p++)
{
if (*p == '\0')
{
immediate_quit--;
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if (sr_get_debug ())
printf ("\nMatched\n");
return;
}
}
else
{
if (!discard)
{
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fwrite (string, 1, (p - 1) - string, stdout);
putchar ((char) c);
fflush (stdout);
}
p = string;
}
}
}
/* Keep discarding input until we see the ROMBUG prompt.
The convention for dealing with the prompt is that you
o give your command
o *then* wait for the prompt.
Thus the last thing that a procedure does with the serial line
will be an expect_prompt(). Exception: rombug_resume does not
wait for the prompt, because the terminal is being handed over
to the inferior. However, the next thing which happens after that
is a rombug_wait which does wait for the prompt.
Note that this includes abnormal exit, e.g. error(). This is
necessary to prevent getting into states from which we can't
recover. */
static void
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expect_prompt (int discard)
{
if (monitor_log)
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/* This is a convenient place to do this. The idea is to do it often
enough that we never lose much data if we terminate abnormally. */
fflush (log_file);
if (is_trace_mode)
{
expect ("trace", discard);
}
else
{
expect (PROMPT, discard);
}
}
/* Get a hex digit from the remote system & return its value.
If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */
static int
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get_hex_digit (int ignore_space)
{
int ch;
while (1)
{
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ch = readchar (timeout);
if (ch >= '0' && ch <= '9')
return ch - '0';
else if (ch >= 'A' && ch <= 'F')
return ch - 'A' + 10;
else if (ch >= 'a' && ch <= 'f')
return ch - 'a' + 10;
else if (ch == ' ' && ignore_space)
;
else
{
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expect_prompt (1);
error ("Invalid hex digit from remote system.");
}
}
}
/* Get a byte from monitor and put it in *BYT. Accept any number
leading spaces. */
static void
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get_hex_byte (char *byt)
{
int val;
val = get_hex_digit (1) << 4;
val |= get_hex_digit (0);
*byt = val;
}
/* Get N 32-bit words from remote, each preceded by a space,
and put them in registers starting at REGNO. */
static void
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get_hex_regs (int n, int regno)
{
long val;
int i;
unsigned char b;
for (i = 0; i < n; i++)
{
int j;
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val = 0;
for (j = 0; j < 4; j++)
{
get_hex_byte (&b);
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
val = (val << 8) + b;
else
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val = val + (b << (j * 8));
}
supply_register (regno++, (char *) &val);
}
}
/* This is called not only when we first attach, but also when the
user types "run" after having attached. */
static void
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rombug_create_inferior (char *execfile, char *args, char **env)
{
int entry_pt;
if (args && *args)
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error ("Can't pass arguments to remote ROMBUG process");
if (execfile == 0 || exec_bfd == 0)
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error ("No executable file specified");
entry_pt = (int) bfd_get_start_address (exec_bfd);
if (monitor_log)
fputs ("\nIn Create_inferior()", log_file);
/* The "process" (board) is already stopped awaiting our commands, and
the program is already downloaded. We just set its PC and go. */
init_wait_for_inferior ();
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proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0);
}
/* Open a connection to a remote debugger.
NAME is the filename used for communication. */
static char dev_name[100];
static void
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rombug_open (char *args, int from_tty)
{
if (args == NULL)
error ("Use `target RomBug DEVICE-NAME' to use a serial port, or \n\
`target RomBug HOST-NAME:PORT-NUMBER' to use a network connection.");
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target_preopen (from_tty);
if (rombug_is_open)
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unpush_target (&rombug_ops);
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strcpy (dev_name, args);
monitor_desc = serial_open (dev_name);
if (monitor_desc == NULL)
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perror_with_name (dev_name);
/* if baud rate is set by 'set remotebaud' */
if (serial_setbaudrate (monitor_desc, sr_get_baud_rate ()))
{
serial_close (monitor_desc);
perror_with_name ("RomBug");
}
serial_raw (monitor_desc);
if (tty_xon || tty_xoff)
{
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struct hardware_ttystate
{
struct termios t;
}
*tty_s;
tty_s = (struct hardware_ttystate *) serial_get_tty_state (monitor_desc);
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if (tty_xon)
tty_s->t.c_iflag |= IXON;
if (tty_xoff)
tty_s->t.c_iflag |= IXOFF;
serial_set_tty_state (monitor_desc, (serial_ttystate) tty_s);
}
rombug_is_open = 1;
log_file = fopen (LOG_FILE, "w");
if (log_file == NULL)
perror_with_name (LOG_FILE);
push_monitor (&rombug_cmds);
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printf_monitor ("\r"); /* CR wakes up monitor */
expect_prompt (1);
push_target (&rombug_ops);
attach_flag = 1;
if (from_tty)
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printf ("Remote %s connected to %s\n", target_shortname,
dev_name);
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rombug_fetch_registers ();
printf_monitor ("ov e \r");
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expect_prompt (1);
bufaddr = 0;
buflen = 0;
}
/*
* Close out all files and local state before this target loses control.
*/
static void
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rombug_close (int quitting)
{
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if (rombug_is_open)
{
serial_close (monitor_desc);
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monitor_desc = NULL;
rombug_is_open = 0;
}
if (log_file)
{
if (ferror (log_file))
fprintf (stderr, "Error writing log file.\n");
if (fclose (log_file) != 0)
fprintf (stderr, "Error closing log file.\n");
log_file = 0;
}
}
int
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rombug_link (char *mod_name, CORE_ADDR *text_reloc)
{
int i, j;
unsigned long val;
unsigned char b;
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printf_monitor ("l %s \r", mod_name);
expect_prompt (1);
printf_monitor (".r \r");
expect (REG_DELIM, 1);
for (i = 0; i <= 7; i++)
{
val = 0;
for (j = 0; j < 4; j++)
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{
get_hex_byte (&b);
val = (val << 8) + b;
}
}
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expect_prompt (1);
*text_reloc = val;
return 1;
}
/* Terminate the open connection to the remote debugger.
Use this when you want to detach and do something else
with your gdb. */
static void
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rombug_detach (int from_tty)
{
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if (attach_flag)
{
printf_monitor (GO_CMD);
attach_flag = 0;
}
pop_target (); /* calls rombug_close to do the real work */
if (from_tty)
printf ("Ending remote %s debugging\n", target_shortname);
}
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/*
* Tell the remote machine to resume.
*/
static void
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rombug_resume (ptid_t ptid, int step, enum target_signal sig)
{
if (monitor_log)
fprintf (log_file, "\nIn Resume (step=%d, sig=%d)\n", step, sig);
if (step)
{
is_trace_mode = 1;
printf_monitor (STEP_CMD);
/* wait for the echo. **
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expect (STEP_CMD, 1);
*/
}
else
{
printf_monitor (GO_CMD);
/* swallow the echo. **
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expect (GO_CMD, 1);
*/
}
bufaddr = 0;
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buflen = 0;
}
/*
* Wait until the remote machine stops, then return,
* storing status in status just as `wait' would.
*/
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static ptid *
rombug_wait (ptid_t ptid, struct target_waitstatus *status)
{
int old_timeout = timeout;
struct section_offsets *offs;
CORE_ADDR addr, pc;
struct obj_section *obj_sec;
if (monitor_log)
fputs ("\nIn wait ()", log_file);
status->kind = TARGET_WAITKIND_EXITED;
status->value.integer = 0;
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timeout = -1; /* Don't time out -- user program is running. */
expect ("eax:", 0); /* output any message before register display */
expect_prompt (1); /* Wait for prompt, outputting extraneous text */
status->kind = TARGET_WAITKIND_STOPPED;
status->value.sig = TARGET_SIGNAL_TRAP;
timeout = old_timeout;
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rombug_fetch_registers ();
bufaddr = 0;
buflen = 0;
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pc = read_register (PC_REGNUM);
addr = read_register (DATABASE_REG);
obj_sec = find_pc_section (pc);
if (obj_sec != NULL)
{
if (obj_sec->objfile != symfile_objfile)
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new_symfile_objfile (obj_sec->objfile, 1, 0);
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offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
offs->offsets[SECT_OFF_DATA (symfile_objfile)] = addr;
offs->offsets[SECT_OFF_BSS (symfile_objfile)] = addr;
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objfile_relocate (symfile_objfile, offs);
}
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return inferior_ptid;
}
/* Return the name of register number regno in the form input and output by
monitor. Currently, register_names just happens to contain exactly what
monitor wants. Lets take advantage of that just as long as possible! */
static char *
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get_reg_name (int regno)
{
static char buf[50];
char *p;
char *b;
b = buf;
if (regno < 0)
return ("");
/*
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for (p = REGISTER_NAME (regno); *p; p++)
*b++ = toupper(*p);
*b = '\000';
*/
p = (char *) REGISTER_NAME (regno);
return p;
/*
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return buf;
*/
}
/* read the remote registers into the block regs. */
static void
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rombug_fetch_registers (void)
{
int regno, j, i;
long val;
unsigned char b;
printf_monitor (GET_REG);
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expect ("eax:", 1);
expect ("\n", 1);
get_hex_regs (1, 0);
get_hex_regs (1, 3);
get_hex_regs (1, 1);
get_hex_regs (1, 2);
get_hex_regs (1, 6);
get_hex_regs (1, 7);
get_hex_regs (1, 5);
get_hex_regs (1, 4);
for (regno = 8; regno <= 15; regno++)
{
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expect (REG_DELIM, 1);
if (regno >= 8 && regno <= 13)
{
val = 0;
for (j = 0; j < 2; j++)
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{
get_hex_byte (&b);
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
val = (val << 8) + b;
else
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val = val + (b << (j * 8));
}
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if (regno == 8)
i = 10;
if (regno >= 9 && regno <= 12)
i = regno + 3;
if (regno == 13)
i = 11;
supply_register (i, (char *) &val);
}
else if (regno == 14)
{
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get_hex_regs (1, PC_REGNUM);
}
else if (regno == 15)
{
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get_hex_regs (1, 9);
}
else
{
val = 0;
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supply_register (regno, (char *) &val);
}
}
is_trace_mode = 0;
expect_prompt (1);
}
/* Fetch register REGNO, or all registers if REGNO is -1.
Returns errno value. */
static void
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rombug_fetch_register (int regno)
{
int val, j;
unsigned char b;
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if (monitor_log)
{
fprintf (log_file, "\nIn Fetch Register (reg=%s)\n", get_reg_name (regno));
fflush (log_file);
}
if (regno < 0)
{
rombug_fetch_registers ();
}
else
{
char *name = get_reg_name (regno);
printf_monitor (GET_REG);
if (regno >= 10 && regno <= 15)
{
expect ("\n", 1);
expect ("\n", 1);
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expect (name, 1);
expect (REG_DELIM, 1);
val = 0;
for (j = 0; j < 2; j++)
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{
get_hex_byte (&b);
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
val = (val << 8) + b;
else
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val = val + (b << (j * 8));
}
supply_register (regno, (char *) &val);
}
else if (regno == 8 || regno == 9)
{
expect ("\n", 1);
expect ("\n", 1);
expect ("\n", 1);
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expect (name, 1);
expect (REG_DELIM, 1);
get_hex_regs (1, regno);
}
else
{
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expect (name, 1);
expect (REG_DELIM, 1);
expect ("\n", 1);
get_hex_regs (1, 0);
get_hex_regs (1, 3);
get_hex_regs (1, 1);
get_hex_regs (1, 2);
get_hex_regs (1, 6);
get_hex_regs (1, 7);
get_hex_regs (1, 5);
get_hex_regs (1, 4);
}
expect_prompt (1);
}
return;
}
/* Store the remote registers from the contents of the block REGS. */
static void
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rombug_store_registers (void)
{
int regno;
for (regno = 0; regno <= PC_REGNUM; regno++)
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rombug_store_register (regno);
registers_changed ();
}
/* Store register REGNO, or all if REGNO == 0.
return errno value. */
static void
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rombug_store_register (int regno)
{
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char *name;
if (monitor_log)
fprintf (log_file, "\nIn Store_register (regno=%d)\n", regno);
if (regno == -1)
rombug_store_registers ();
else
{
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if (sr_get_debug ())
printf ("Setting register %s to 0x%x\n", get_reg_name (regno), read_register (regno));
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name = get_reg_name (regno);
if (name == 0)
return;
printf_monitor (SET_REG, name, read_register (regno));
is_trace_mode = 0;
expect_prompt (1);
}
}
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
which store all the registers in one fell swoop, this makes sure
that registers contains all the registers from the program being
debugged. */
static void
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rombug_prepare_to_store (void)
{
/* Do nothing, since we can store individual regs */
}
static void
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rombug_files_info (void)
{
printf ("\tAttached to %s at %d baud.\n",
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dev_name, sr_get_baud_rate ());
}
/* Copy LEN bytes of data from debugger memory at MYADDR
to inferior's memory at MEMADDR. Returns length moved. */
static int
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rombug_write_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
{
int i;
char buf[10];
if (monitor_log)
fprintf (log_file, "\nIn Write_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len);
printf_monitor (MEM_SET_CMD, memaddr);
for (i = 0; i < len; i++)
{
expect (CMD_DELIM, 1);
printf_monitor ("%x \r", myaddr[i]);
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if (sr_get_debug ())
printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]);
}
expect (CMD_DELIM, 1);
if (CMD_END)
printf_monitor (CMD_END);
is_trace_mode = 0;
expect_prompt (1);
bufaddr = 0;
buflen = 0;
return len;
}
/* Read LEN bytes from inferior memory at MEMADDR. Put the result
at debugger address MYADDR. Returns length moved. */
static int
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rombug_read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
int i, j;
/* Number of bytes read so far. */
int count;
/* Starting address of this pass. */
unsigned long startaddr;
/* Number of bytes to read in this pass. */
int len_this_pass;
if (monitor_log)
fprintf (log_file, "\nIn Read_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len);
/* Note that this code works correctly if startaddr is just less
than UINT_MAX (well, really CORE_ADDR_MAX if there was such a
thing). That is, something like
rombug_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
works--it never adds len To memaddr and gets 0. */
/* However, something like
rombug_read_bytes (CORE_ADDR_MAX - 3, foo, 4)
doesn't need to work. Detect it and give up if there's an attempt
to do that. */
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if (((memaddr - 1) + len) < memaddr)
{
errno = EIO;
return 0;
}
if (bufaddr <= memaddr && (memaddr + len) <= (bufaddr + buflen))
{
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memcpy (myaddr, &readbuf[memaddr - bufaddr], len);
return len;
}
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startaddr = memaddr;
count = 0;
while (count < len)
{
len_this_pass = 16;
if ((startaddr % 16) != 0)
len_this_pass -= startaddr % 16;
if (len_this_pass > (len - count))
len_this_pass = (len - count);
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if (sr_get_debug ())
printf ("\nDisplay %d bytes at %x\n", len_this_pass, startaddr);
printf_monitor (MEM_DIS_CMD, startaddr, 8);
expect ("- ", 1);
for (i = 0; i < 16; i++)
{
get_hex_byte (&readbuf[i]);
}
bufaddr = startaddr;
buflen = 16;
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memcpy (&myaddr[count], readbuf, len_this_pass);
count += len_this_pass;
startaddr += len_this_pass;
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expect (CMD_DELIM, 1);
}
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if (CMD_END)
printf_monitor (CMD_END);
is_trace_mode = 0;
expect_prompt (1);
return len;
}
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/* 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. */
static int
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rombug_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len,
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int write, struct mem_attrib *attrib,
struct target_ops *target)
{
if (write)
return rombug_write_inferior_memory (memaddr, myaddr, len);
else
return rombug_read_inferior_memory (memaddr, myaddr, len);
}
static void
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rombug_kill (char *args, int from_tty)
{
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return; /* ignore attempts to kill target system */
}
/* Clean up when a program exits.
The program actually lives on in the remote processor's RAM, and may be
run again without a download. Don't leave it full of breakpoint
instructions. */
static void
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rombug_mourn_inferior (void)
{
remove_breakpoints ();
generic_mourn_inferior (); /* Do all the proper things now */
}
#define MAX_MONITOR_BREAKPOINTS 16
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static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] =
{0};
static int
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rombug_insert_breakpoint (CORE_ADDR addr, char *shadow)
{
int i;
CORE_ADDR bp_addr = addr;
int bp_size = 0;
if (monitor_log)
fprintf (log_file, "\nIn Insert_breakpoint (addr=%x)\n", addr);
BREAKPOINT_FROM_PC (&bp_addr, &bp_size);
for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++)
if (breakaddr[i] == 0)
{
breakaddr[i] = addr;
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if (sr_get_debug ())
printf ("Breakpoint at %x\n", addr);
rombug_read_inferior_memory (bp_addr, shadow, bp_size);
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printf_monitor (SET_BREAK_CMD, addr);
is_trace_mode = 0;
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expect_prompt (1);
return 0;
}
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fprintf (stderr, "Too many breakpoints (> 16) for monitor\n");
return 1;
}
/*
* _remove_breakpoint -- Tell the monitor to remove a breakpoint
*/
static int
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rombug_remove_breakpoint (CORE_ADDR addr, char *shadow)
{
int i;
if (monitor_log)
fprintf (log_file, "\nIn Remove_breakpoint (addr=%x)\n", addr);
for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++)
if (breakaddr[i] == addr)
{
breakaddr[i] = 0;
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printf_monitor (CLR_BREAK_CMD, addr);
is_trace_mode = 0;
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expect_prompt (1);
return 0;
}
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fprintf (stderr, "Can't find breakpoint associated with 0x%x\n", addr);
return 1;
}
/* Load a file. This is usually an srecord, which is ascii. No
protocol, just sent line by line. */
#define DOWNLOAD_LINE_SIZE 100
static void
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rombug_load (char *arg)
{
/* this part comment out for os9* */
#if 0
FILE *download;
char buf[DOWNLOAD_LINE_SIZE];
int i, bytes_read;
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if (sr_get_debug ())
printf ("Loading %s to monitor\n", arg);
download = fopen (arg, "r");
if (download == NULL)
{
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error (sprintf (buf, "%s Does not exist", arg));
return;
}
printf_monitor (LOAD_CMD);
/* expect ("Waiting for S-records from host... ", 1); */
while (!feof (download))
{
bytes_read = fread (buf, sizeof (char), DOWNLOAD_LINE_SIZE, download);
if (hashmark)
{
putchar ('.');
fflush (stdout);
}
if (serial_write (monitor_desc, buf, bytes_read))
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{
fprintf (stderr, "serial_write failed: (while downloading) %s\n", safe_strerror (errno));
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break;
}
i = 0;
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while (i++ <= 200000)
{
}; /* Ugly HACK, probably needs flow control */
if (bytes_read < DOWNLOAD_LINE_SIZE)
{
if (!feof (download))
error ("Only read %d bytes\n", bytes_read);
break;
}
}
if (hashmark)
{
putchar ('\n');
}
if (!feof (download))
error ("Never got EOF while downloading");
fclose (download);
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#endif /* 0 */
}
/* Put a command string, in args, out to MONITOR.
Output from MONITOR is placed on the users terminal until the prompt
is seen. */
static void
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rombug_command (char *args, int fromtty)
{
if (monitor_desc == NULL)
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error ("monitor target not open.");
if (monitor_log)
fprintf (log_file, "\nIn command (args=%s)\n", args);
if (!args)
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error ("Missing command.");
printf_monitor ("%s\r", args);
expect_prompt (0);
}
#if 0
/* Connect the user directly to MONITOR. This command acts just like the
'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
static struct ttystate ttystate;
static void
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cleanup_tty (void)
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{
printf ("\r\n[Exiting connect mode]\r\n");
/*serial_restore(0, &ttystate); */
}
static void
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connect_command (char *args, int fromtty)
{
fd_set readfds;
int numfds;
int c;
char cur_esc = 0;
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dont_repeat ();
if (monitor_desc == NULL)
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error ("monitor target not open.");
if (args)
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fprintf ("This command takes no args. They have been ignored.\n");
printf ("[Entering connect mode. Use ~. or ~^D to escape]\n");
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serial_raw (0, &ttystate);
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make_cleanup (cleanup_tty, 0);
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FD_ZERO (&readfds);
while (1)
{
do
{
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FD_SET (0, &readfds);
FD_SET (deprecated_serial_fd (monitor_desc), &readfds);
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numfds = select (sizeof (readfds) * 8, &readfds, 0, 0, 0);
}
while (numfds == 0);
if (numfds < 0)
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perror_with_name ("select");
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if (FD_ISSET (0, &readfds))
{ /* tty input, send to monitor */
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c = getchar ();
if (c < 0)
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perror_with_name ("connect");
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printf_monitor ("%c", c);
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 (FD_ISSET (deprecated_serial_fd (monitor_desc), &readfds))
{
while (1)
{
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c = readchar (0);
if (c < 0)
break;
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putchar (c);
}
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fflush (stdout);
}
}
}
#endif
/*
* Define the monitor command strings. Since these are passed directly
* through to a printf style function, we need can include formatting
* strings. We also need a CR or LF on the end.
*/
#warning FIXME: monitor interface pattern strings, stale struct decl
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struct monitor_ops rombug_cmds =
{
"g \r", /* execute or usually GO command */
"g \r", /* continue command */
"t \r", /* single step */
"b %x\r", /* set a breakpoint */
"k %x\r", /* clear a breakpoint */
"c %x\r", /* set memory to a value */
"d %x %d\r", /* display memory */
"$%08X", /* prompt memory commands use */
".%s %x\r", /* set a register */
":", /* delimiter between registers */
". \r", /* read a register */
"mf \r", /* download command */
"RomBug: ", /* monitor command prompt */
": ", /* end-of-command delimitor */
".\r" /* optional command terminator */
};
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struct target_ops rombug_ops;
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static void
init_rombug_ops (void)
{
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rombug_ops.to_shortname = "rombug";
rombug_ops.to_longname = "Microware's ROMBUG debug monitor";
rombug_ops.to_doc = "Use a remote computer running the ROMBUG debug monitor.\n\
Specify the serial device it is connected to (e.g. /dev/ttya).",
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rombug_ops.to_open = rombug_open;
rombug_ops.to_close = rombug_close;
rombug_ops.to_attach = 0;
rombug_ops.to_post_attach = NULL;
rombug_ops.to_require_attach = NULL;
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rombug_ops.to_detach = rombug_detach;
rombug_ops.to_require_detach = NULL;
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rombug_ops.to_resume = rombug_resume;
rombug_ops.to_wait = rombug_wait;
rombug_ops.to_post_wait = NULL;
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rombug_ops.to_fetch_registers = rombug_fetch_register;
rombug_ops.to_store_registers = rombug_store_register;
rombug_ops.to_prepare_to_store = rombug_prepare_to_store;
rombug_ops.to_xfer_memory = rombug_xfer_inferior_memory;
rombug_ops.to_files_info = rombug_files_info;
rombug_ops.to_insert_breakpoint = rombug_insert_breakpoint;
rombug_ops.to_remove_breakpoint = rombug_remove_breakpoint; /* Breakpoints */
rombug_ops.to_terminal_init = 0;
rombug_ops.to_terminal_inferior = 0;
rombug_ops.to_terminal_ours_for_output = 0;
rombug_ops.to_terminal_ours = 0;
rombug_ops.to_terminal_info = 0; /* Terminal handling */
rombug_ops.to_kill = rombug_kill;
rombug_ops.to_load = rombug_load; /* load */
rombug_ops.to_lookup_symbol = rombug_link; /* lookup_symbol */
rombug_ops.to_create_inferior = rombug_create_inferior;
rombug_ops.to_post_startup_inferior = NULL;
rombug_ops.to_acknowledge_created_inferior = NULL;
rombug_ops.to_clone_and_follow_inferior = NULL;
rombug_ops.to_post_follow_inferior_by_clone = NULL;
rombug_ops.to_insert_fork_catchpoint = NULL;
rombug_ops.to_remove_fork_catchpoint = NULL;
rombug_ops.to_insert_vfork_catchpoint = NULL;
rombug_ops.to_remove_vfork_catchpoint = NULL;
rombug_ops.to_has_forked = NULL;
rombug_ops.to_has_vforked = NULL;
rombug_ops.to_can_follow_vfork_prior_to_exec = NULL;
rombug_ops.to_post_follow_vfork = NULL;
rombug_ops.to_insert_exec_catchpoint = NULL;
rombug_ops.to_remove_exec_catchpoint = NULL;
rombug_ops.to_has_execd = NULL;
rombug_ops.to_reported_exec_events_per_exec_call = NULL;
rombug_ops.to_has_exited = NULL;
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rombug_ops.to_mourn_inferior = rombug_mourn_inferior;
rombug_ops.to_can_run = 0; /* can_run */
rombug_ops.to_notice_signals = 0; /* notice_signals */
rombug_ops.to_thread_alive = 0;
rombug_ops.to_stop = 0; /* to_stop */
rombug_ops.to_pid_to_exec_file = NULL;
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rombug_ops.to_stratum = process_stratum;
rombug_ops.DONT_USE = 0; /* next */
rombug_ops.to_has_all_memory = 1;
rombug_ops.to_has_memory = 1;
rombug_ops.to_has_stack = 1;
rombug_ops.to_has_registers = 1;
rombug_ops.to_has_execution = 1; /* has execution */
rombug_ops.to_sections = 0;
rombug_ops.to_sections_end = 0; /* Section pointers */
rombug_ops.to_magic = OPS_MAGIC; /* Always the last thing */
}
void
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_initialize_remote_os9k (void)
{
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init_rombug_ops ();
add_target (&rombug_ops);
add_show_from_set (
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add_set_cmd ("hash", no_class, var_boolean, (char *) &hashmark,
"Set display of activity while downloading a file.\nWhen enabled, a period \'.\' is displayed.",
&setlist),
&showlist);
add_show_from_set (
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add_set_cmd ("timeout", no_class, var_zinteger,
(char *) &timeout,
"Set timeout in seconds for remote MIPS serial I/O.",
&setlist),
&showlist);
add_show_from_set (
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add_set_cmd ("remotelog", no_class, var_zinteger,
(char *) &monitor_log,
"Set monitor activity log on(=1) or off(=0).",
&setlist),
&showlist);
add_show_from_set (
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add_set_cmd ("remotexon", no_class, var_zinteger,
(char *) &tty_xon,
"Set remote tty line XON control",
&setlist),
&showlist);
add_show_from_set (
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add_set_cmd ("remotexoff", no_class, var_zinteger,
(char *) &tty_xoff,
"Set remote tty line XOFF control",
&setlist),
&showlist);
add_com ("rombug <command>", class_obscure, rombug_command,
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"Send a command to the debug monitor.");
#if 0
add_com ("connect", class_obscure, connect_command,
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"Connect the terminal directly up to a serial based command monitor.\nUse <CR>~. or <CR>~^D to break out.");
#endif
}