d747e0af3d
* All GDB files that #include defs.h: Removed stdio.h. (defs.h): #include stdio.h. This has been tested by building GDBs for all targets hosted on Sun4. None of the build problems were related to stdio.h inclusion. (n.b. many configurations don't build for other reasons.)
1001 lines
24 KiB
C
1001 lines
24 KiB
C
/* Remote debugging interface for AMD 29000 EBMON on IBM PC, for GDB.
|
|
Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
|
|
Contributed by Cygnus Support. Written by Jim Kingdon for 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
/* This is like remote.c but is for an esoteric situation--
|
|
having a 29k board in a PC hooked up to a unix machine with
|
|
a serial line, and running ctty com1 on the PC, through which
|
|
the unix machine can run ebmon. 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. */
|
|
|
|
#define TM_FILE_OVERRIDE
|
|
#include "defs.h"
|
|
#include <string.h>
|
|
#include "tm-29k.h"
|
|
|
|
#include "inferior.h"
|
|
#include "wait.h"
|
|
#include "value.h"
|
|
#include <ctype.h>
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
#include "terminal.h"
|
|
#include "target.h"
|
|
#include "gdbcore.h"
|
|
|
|
extern struct target_ops eb_ops; /* Forward declaration */
|
|
|
|
static void eb_close();
|
|
|
|
#define LOG_FILE "eb.log"
|
|
#if defined (LOG_FILE)
|
|
FILE *log_file;
|
|
#endif
|
|
|
|
static int timeout = 24;
|
|
|
|
/* Descriptor for I/O to remote machine. Initialize it to -1 so that
|
|
eb_open knows that we don't have a file open when the program
|
|
starts. */
|
|
int eb_desc = -1;
|
|
|
|
/* stream which is fdopen'd from eb_desc. Only valid when
|
|
eb_desc != -1. */
|
|
FILE *eb_stream;
|
|
|
|
/* Read a character from the remote system, doing all the fancy
|
|
timeout stuff. */
|
|
static int
|
|
readchar ()
|
|
{
|
|
char buf;
|
|
|
|
buf = '\0';
|
|
#ifdef HAVE_TERMIO
|
|
/* termio does the timeout for us. */
|
|
read (eb_desc, &buf, 1);
|
|
#else
|
|
alarm (timeout);
|
|
if (read (eb_desc, &buf, 1) < 0)
|
|
{
|
|
if (errno == EINTR)
|
|
error ("Timeout reading from remote system.");
|
|
else
|
|
perror_with_name ("remote");
|
|
}
|
|
alarm (0);
|
|
#endif
|
|
|
|
if (buf == '\0')
|
|
error ("Timeout reading from remote system.");
|
|
#if defined (LOG_FILE)
|
|
putc (buf & 0x7f, log_file);
|
|
#endif
|
|
return buf & 0x7f;
|
|
}
|
|
|
|
/* Keep discarding input from the remote system, until STRING is found.
|
|
Let the user break out immediately. */
|
|
static void
|
|
expect (string)
|
|
char *string;
|
|
{
|
|
char *p = string;
|
|
|
|
immediate_quit = 1;
|
|
while (1)
|
|
{
|
|
if (readchar() == *p)
|
|
{
|
|
p++;
|
|
if (*p == '\0')
|
|
{
|
|
immediate_quit = 0;
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
p = string;
|
|
}
|
|
}
|
|
|
|
/* Keep discarding input until we see the ebmon 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: eb_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 eb_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
|
|
expect_prompt ()
|
|
{
|
|
#if defined (LOG_FILE)
|
|
/* 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);
|
|
#endif
|
|
expect ("\n# ");
|
|
}
|
|
|
|
/* Get a hex digit from the remote system & return its value.
|
|
If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */
|
|
static int
|
|
get_hex_digit (ignore_space)
|
|
int ignore_space;
|
|
{
|
|
int ch;
|
|
while (1)
|
|
{
|
|
ch = readchar ();
|
|
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
|
|
{
|
|
expect_prompt ();
|
|
error ("Invalid hex digit from remote system.");
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Get a byte from eb_desc and put it in *BYT. Accept any number
|
|
leading spaces. */
|
|
static void
|
|
get_hex_byte (byt)
|
|
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
|
|
get_hex_regs (n, regno)
|
|
int n;
|
|
int regno;
|
|
{
|
|
long val;
|
|
int i;
|
|
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
int j;
|
|
|
|
val = 0;
|
|
for (j = 0; j < 8; j++)
|
|
val = (val << 4) + get_hex_digit (j == 0);
|
|
supply_register (regno++, &val);
|
|
}
|
|
}
|
|
|
|
/* Called when SIGALRM signal sent due to alarm() timeout. */
|
|
#ifndef HAVE_TERMIO
|
|
|
|
#ifndef __STDC__
|
|
#define volatile /**/
|
|
#endif
|
|
volatile int n_alarms;
|
|
|
|
void
|
|
eb_timer ()
|
|
{
|
|
#if 0
|
|
if (kiodebug)
|
|
printf ("eb_timer called\n");
|
|
#endif
|
|
n_alarms++;
|
|
}
|
|
#endif
|
|
|
|
/* malloc'd name of the program on the remote system. */
|
|
static char *prog_name = NULL;
|
|
|
|
/* Nonzero if we have loaded the file ("yc") and not yet issued a "gi"
|
|
command. "gi" is supposed to happen exactly once for each "yc". */
|
|
static int need_gi = 0;
|
|
|
|
/* Number of SIGTRAPs we need to simulate. That is, the next
|
|
NEED_ARTIFICIAL_TRAP calls to eb_wait should just return
|
|
SIGTRAP without actually waiting for anything. */
|
|
|
|
static int need_artificial_trap = 0;
|
|
|
|
/* This is called not only when we first attach, but also when the
|
|
user types "run" after having attached. */
|
|
static void
|
|
eb_create_inferior (execfile, args, env)
|
|
char *execfile;
|
|
char *args;
|
|
char **env;
|
|
{
|
|
int entry_pt;
|
|
|
|
if (args && *args)
|
|
error ("Can't pass arguments to remote EBMON process");
|
|
|
|
if (execfile == 0 || exec_bfd == 0)
|
|
error ("No exec file specified");
|
|
|
|
entry_pt = (int) bfd_get_start_address (exec_bfd);
|
|
|
|
#ifdef CREATE_INFERIOR_HOOK
|
|
CREATE_INFERIOR_HOOK (0); /* No process-ID */
|
|
#endif
|
|
|
|
{
|
|
/* OK, now read in the file. Y=read, C=COFF, D=no symbols
|
|
0=start address, %s=filename. */
|
|
|
|
fprintf (eb_stream, "YC D,0:%s", prog_name);
|
|
|
|
if (args != NULL)
|
|
fprintf(eb_stream, " %s", args);
|
|
|
|
fprintf (eb_stream, "\n");
|
|
fflush (eb_stream);
|
|
|
|
expect_prompt ();
|
|
|
|
need_gi = 1;
|
|
}
|
|
|
|
/* The "process" (board) is already stopped awaiting our commands, and
|
|
the program is already downloaded. We just set its PC and go. */
|
|
|
|
clear_proceed_status ();
|
|
|
|
/* Tell wait_for_inferior that we've started a new process. */
|
|
init_wait_for_inferior ();
|
|
|
|
/* Set up the "saved terminal modes" of the inferior
|
|
based on what modes we are starting it with. */
|
|
target_terminal_init ();
|
|
|
|
/* Install inferior's terminal modes. */
|
|
target_terminal_inferior ();
|
|
|
|
/* insert_step_breakpoint (); FIXME, do we need this? */
|
|
proceed ((CORE_ADDR)entry_pt, -1, 0); /* Let 'er rip... */
|
|
}
|
|
|
|
/* Translate baud rates from integers to damn B_codes. Unix should
|
|
have outgrown this crap years ago, but even POSIX wouldn't buck it. */
|
|
|
|
#ifndef B19200
|
|
#define B19200 EXTA
|
|
#endif
|
|
#ifndef B38400
|
|
#define B38400 EXTB
|
|
#endif
|
|
|
|
struct {int rate, damn_b;} baudtab[] = {
|
|
{0, B0},
|
|
{50, B50},
|
|
{75, B75},
|
|
{110, B110},
|
|
{134, B134},
|
|
{150, B150},
|
|
{200, B200},
|
|
{300, B300},
|
|
{600, B600},
|
|
{1200, B1200},
|
|
{1800, B1800},
|
|
{2400, B2400},
|
|
{4800, B4800},
|
|
{9600, B9600},
|
|
{19200, B19200},
|
|
{38400, B38400},
|
|
{-1, -1},
|
|
};
|
|
|
|
int damn_b (rate)
|
|
int rate;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; baudtab[i].rate != -1; i++)
|
|
if (rate == baudtab[i].rate) return baudtab[i].damn_b;
|
|
return B38400; /* Random */
|
|
}
|
|
|
|
|
|
/* Open a connection to a remote debugger.
|
|
NAME is the filename used for communication, then a space,
|
|
then the name of the program as we should name it to EBMON. */
|
|
|
|
static int baudrate = 9600;
|
|
static char *dev_name;
|
|
void
|
|
eb_open (name, from_tty)
|
|
char *name;
|
|
int from_tty;
|
|
{
|
|
TERMINAL sg;
|
|
|
|
char *p;
|
|
|
|
target_preopen (from_tty);
|
|
|
|
/* Find the first whitespace character, it separates dev_name from
|
|
prog_name. */
|
|
if (name == 0)
|
|
goto erroid;
|
|
|
|
for (p = name;
|
|
*p != '\0' && !isspace (*p); p++)
|
|
;
|
|
if (*p == '\0')
|
|
erroid:
|
|
error ("\
|
|
Please include the name of the device for the serial port,\n\
|
|
the baud rate, and the name of the program to run on the remote system.");
|
|
dev_name = alloca (p - name + 1);
|
|
strncpy (dev_name, name, p - name);
|
|
dev_name[p - name] = '\0';
|
|
|
|
/* Skip over the whitespace after dev_name */
|
|
for (; isspace (*p); p++)
|
|
/*EMPTY*/;
|
|
|
|
if (1 != sscanf (p, "%d ", &baudrate))
|
|
goto erroid;
|
|
|
|
/* Skip the number and then the spaces */
|
|
for (; isdigit (*p); p++)
|
|
/*EMPTY*/;
|
|
for (; isspace (*p); p++)
|
|
/*EMPTY*/;
|
|
|
|
if (prog_name != NULL)
|
|
free (prog_name);
|
|
prog_name = savestring (p, strlen (p));
|
|
|
|
eb_close (0);
|
|
|
|
eb_desc = open (dev_name, O_RDWR);
|
|
if (eb_desc < 0)
|
|
perror_with_name (dev_name);
|
|
ioctl (eb_desc, TIOCGETP, &sg);
|
|
#ifdef HAVE_TERMIO
|
|
sg.c_cc[VMIN] = 0; /* read with timeout. */
|
|
sg.c_cc[VTIME] = timeout * 10;
|
|
sg.c_lflag &= ~(ICANON | ECHO);
|
|
sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate);
|
|
#else
|
|
sg.sg_ispeed = damn_b (baudrate);
|
|
sg.sg_ospeed = damn_b (baudrate);
|
|
sg.sg_flags |= RAW | ANYP;
|
|
sg.sg_flags &= ~ECHO;
|
|
#endif
|
|
|
|
ioctl (eb_desc, TIOCSETP, &sg);
|
|
eb_stream = fdopen (eb_desc, "r+");
|
|
|
|
push_target (&eb_ops);
|
|
if (from_tty)
|
|
printf ("Remote %s debugging %s using %s\n", target_shortname,
|
|
prog_name, dev_name);
|
|
|
|
#ifndef HAVE_TERMIO
|
|
#ifndef NO_SIGINTERRUPT
|
|
/* Cause SIGALRM's to make reads fail with EINTR instead of resuming
|
|
the read. */
|
|
if (siginterrupt (SIGALRM, 1) != 0)
|
|
perror ("eb_open: error in siginterrupt");
|
|
#endif
|
|
|
|
/* Set up read timeout timer. */
|
|
if ((void (*)) signal (SIGALRM, eb_timer) == (void (*)) -1)
|
|
perror ("eb_open: error in signal");
|
|
#endif
|
|
|
|
#if defined (LOG_FILE)
|
|
log_file = fopen (LOG_FILE, "w");
|
|
if (log_file == NULL)
|
|
perror_with_name (LOG_FILE);
|
|
#endif
|
|
|
|
/* Hello? Are you there? */
|
|
write (eb_desc, "\n", 1);
|
|
|
|
expect_prompt ();
|
|
}
|
|
|
|
/* Close out all files and local state before this target loses control. */
|
|
|
|
static void
|
|
eb_close (quitting)
|
|
int quitting;
|
|
{
|
|
|
|
/* Due to a bug in Unix, fclose closes not only the stdio stream,
|
|
but also the file descriptor. So we don't actually close
|
|
eb_desc. */
|
|
if (eb_stream)
|
|
fclose (eb_stream); /* This also closes eb_desc */
|
|
if (eb_desc >= 0)
|
|
/* close (eb_desc); */
|
|
|
|
/* Do not try to close eb_desc again, later in the program. */
|
|
eb_stream = NULL;
|
|
eb_desc = -1;
|
|
|
|
#if defined (LOG_FILE)
|
|
if (log_file) {
|
|
if (ferror (log_file))
|
|
printf ("Error writing log file.\n");
|
|
if (fclose (log_file) != 0)
|
|
printf ("Error closing log file.\n");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Terminate the open connection to the remote debugger.
|
|
Use this when you want to detach and do something else
|
|
with your gdb. */
|
|
void
|
|
eb_detach (from_tty)
|
|
int from_tty;
|
|
{
|
|
pop_target(); /* calls eb_close to do the real work */
|
|
if (from_tty)
|
|
printf ("Ending remote %s debugging\n", target_shortname);
|
|
}
|
|
|
|
/* Tell the remote machine to resume. */
|
|
|
|
void
|
|
eb_resume (step, sig)
|
|
int step, sig;
|
|
{
|
|
if (step)
|
|
{
|
|
write (eb_desc, "t 1,s\n", 6);
|
|
/* Wait for the echo. */
|
|
expect ("t 1,s\r");
|
|
/* Then comes a line containing the instruction we stepped to. */
|
|
expect ("\n@");
|
|
/* Then we get the prompt. */
|
|
expect_prompt ();
|
|
|
|
/* Force the next eb_wait to return a trap. Not doing anything
|
|
about I/O from the target means that the user has to type
|
|
"continue" to see any. This should be fixed. */
|
|
need_artificial_trap = 1;
|
|
}
|
|
else
|
|
{
|
|
if (need_gi)
|
|
{
|
|
need_gi = 0;
|
|
write (eb_desc, "gi\n", 3);
|
|
|
|
/* Swallow the echo of "gi". */
|
|
expect ("gi\r");
|
|
}
|
|
else
|
|
{
|
|
write (eb_desc, "GR\n", 3);
|
|
/* Swallow the echo. */
|
|
expect ("GR\r");
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Wait until the remote machine stops, then return,
|
|
storing status in STATUS just as `wait' would. */
|
|
|
|
int
|
|
eb_wait (status)
|
|
WAITTYPE *status;
|
|
{
|
|
/* Strings to look for. '?' means match any single character.
|
|
Note that with the algorithm we use, the initial character
|
|
of the string cannot recur in the string, or we will not
|
|
find some cases of the string in the input. */
|
|
|
|
static char bpt[] = "Invalid interrupt taken - #0x50 - ";
|
|
/* It would be tempting to look for "\n[__exit + 0x8]\n"
|
|
but that requires loading symbols with "yc i" and even if
|
|
we did do that we don't know that the file has symbols. */
|
|
static char exitmsg[] = "\n@????????I JMPTI GR121,LR0";
|
|
char *bp = bpt;
|
|
char *ep = exitmsg;
|
|
|
|
/* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */
|
|
char swallowed[50];
|
|
/* Current position in swallowed. */
|
|
char *swallowed_p = swallowed;
|
|
|
|
int ch;
|
|
int ch_handled;
|
|
|
|
int old_timeout = timeout;
|
|
|
|
WSETEXIT ((*status), 0);
|
|
|
|
if (need_artificial_trap != 0)
|
|
{
|
|
WSETSTOP ((*status), SIGTRAP);
|
|
need_artificial_trap--;
|
|
return 0;
|
|
}
|
|
|
|
timeout = 0; /* Don't time out -- user program is running. */
|
|
while (1)
|
|
{
|
|
ch_handled = 0;
|
|
ch = readchar ();
|
|
if (ch == *bp)
|
|
{
|
|
bp++;
|
|
if (*bp == '\0')
|
|
break;
|
|
ch_handled = 1;
|
|
|
|
*swallowed_p++ = ch;
|
|
}
|
|
else
|
|
bp = bpt;
|
|
|
|
if (ch == *ep || *ep == '?')
|
|
{
|
|
ep++;
|
|
if (*ep == '\0')
|
|
break;
|
|
|
|
if (!ch_handled)
|
|
*swallowed_p++ = ch;
|
|
ch_handled = 1;
|
|
}
|
|
else
|
|
ep = exitmsg;
|
|
|
|
if (!ch_handled)
|
|
{
|
|
char *p;
|
|
|
|
/* Print out any characters which have been swallowed. */
|
|
for (p = swallowed; p < swallowed_p; ++p)
|
|
putc (*p, stdout);
|
|
swallowed_p = swallowed;
|
|
|
|
putc (ch, stdout);
|
|
}
|
|
}
|
|
expect_prompt ();
|
|
if (*bp== '\0')
|
|
WSETSTOP ((*status), SIGTRAP);
|
|
else
|
|
WSETEXIT ((*status), 0);
|
|
timeout = old_timeout;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Return the name of register number REGNO
|
|
in the form input and output by EBMON.
|
|
|
|
Returns a pointer to a static buffer containing the answer. */
|
|
static char *
|
|
get_reg_name (regno)
|
|
int regno;
|
|
{
|
|
static char buf[80];
|
|
if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
|
|
sprintf (buf, "GR%03d", regno - GR96_REGNUM + 96);
|
|
else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
|
|
sprintf (buf, "LR%03d", regno - LR0_REGNUM);
|
|
else if (regno == Q_REGNUM)
|
|
strcpy (buf, "SR131");
|
|
else if (regno >= BP_REGNUM && regno <= CR_REGNUM)
|
|
sprintf (buf, "SR%03d", regno - BP_REGNUM + 133);
|
|
else if (regno == ALU_REGNUM)
|
|
strcpy (buf, "SR132");
|
|
else if (regno >= IPC_REGNUM && regno <= IPB_REGNUM)
|
|
sprintf (buf, "SR%03d", regno - IPC_REGNUM + 128);
|
|
else if (regno >= VAB_REGNUM && regno <= LRU_REGNUM)
|
|
sprintf (buf, "SR%03d", regno - VAB_REGNUM);
|
|
else if (regno == GR1_REGNUM)
|
|
strcpy (buf, "GR001");
|
|
return buf;
|
|
}
|
|
|
|
/* Read the remote registers into the block REGS. */
|
|
|
|
static void
|
|
eb_fetch_registers ()
|
|
{
|
|
int reg_index;
|
|
int regnum_index;
|
|
char tempbuf[10];
|
|
int i;
|
|
|
|
#if 0
|
|
/* This should not be necessary, because one is supposed to read the
|
|
registers only when the inferior is stopped (at least with
|
|
ptrace() and why not make it the same for remote?). */
|
|
/* ^A is the "normal character" used to make sure we are talking to EBMON
|
|
and not to the program being debugged. */
|
|
write (eb_desc, "\001\n");
|
|
expect_prompt ();
|
|
#endif
|
|
|
|
write (eb_desc, "dw gr96,gr127\n", 14);
|
|
for (reg_index = 96, regnum_index = GR96_REGNUM;
|
|
reg_index < 128;
|
|
reg_index += 4, regnum_index += 4)
|
|
{
|
|
sprintf (tempbuf, "GR%03d ", reg_index);
|
|
expect (tempbuf);
|
|
get_hex_regs (4, regnum_index);
|
|
expect ("\n");
|
|
}
|
|
|
|
for (i = 0; i < 128; i += 32)
|
|
{
|
|
/* The PC has a tendency to hang if we get these
|
|
all in one fell swoop ("dw lr0,lr127"). */
|
|
sprintf (tempbuf, "dw lr%d\n", i);
|
|
write (eb_desc, tempbuf, strlen (tempbuf));
|
|
for (reg_index = i, regnum_index = LR0_REGNUM + i;
|
|
reg_index < i + 32;
|
|
reg_index += 4, regnum_index += 4)
|
|
{
|
|
sprintf (tempbuf, "LR%03d ", reg_index);
|
|
expect (tempbuf);
|
|
get_hex_regs (4, regnum_index);
|
|
expect ("\n");
|
|
}
|
|
}
|
|
|
|
write (eb_desc, "dw sr133,sr133\n", 15);
|
|
expect ("SR133 ");
|
|
get_hex_regs (1, BP_REGNUM);
|
|
expect ("\n");
|
|
|
|
write (eb_desc, "dw sr134,sr134\n", 15);
|
|
expect ("SR134 ");
|
|
get_hex_regs (1, FC_REGNUM);
|
|
expect ("\n");
|
|
|
|
write (eb_desc, "dw sr135,sr135\n", 15);
|
|
expect ("SR135 ");
|
|
get_hex_regs (1, CR_REGNUM);
|
|
expect ("\n");
|
|
|
|
write (eb_desc, "dw sr131,sr131\n", 15);
|
|
expect ("SR131 ");
|
|
get_hex_regs (1, Q_REGNUM);
|
|
expect ("\n");
|
|
|
|
write (eb_desc, "dw sr0,sr14\n", 12);
|
|
for (reg_index = 0, regnum_index = VAB_REGNUM;
|
|
regnum_index <= LRU_REGNUM;
|
|
regnum_index += 4, reg_index += 4)
|
|
{
|
|
sprintf (tempbuf, "SR%03d ", reg_index);
|
|
expect (tempbuf);
|
|
get_hex_regs (reg_index == 12 ? 3 : 4, regnum_index);
|
|
expect ("\n");
|
|
}
|
|
|
|
/* There doesn't seem to be any way to get these. */
|
|
{
|
|
int val = -1;
|
|
supply_register (FPE_REGNUM, &val);
|
|
supply_register (INT_REGNUM, &val);
|
|
supply_register (FPS_REGNUM, &val);
|
|
supply_register (EXO_REGNUM, &val);
|
|
}
|
|
|
|
write (eb_desc, "dw gr1,gr1\n", 11);
|
|
expect ("GR001 ");
|
|
get_hex_regs (1, GR1_REGNUM);
|
|
expect_prompt ();
|
|
}
|
|
|
|
/* Fetch register REGNO, or all registers if REGNO is -1.
|
|
Returns errno value. */
|
|
void
|
|
eb_fetch_register (regno)
|
|
int regno;
|
|
{
|
|
if (regno == -1)
|
|
eb_fetch_registers ();
|
|
else
|
|
{
|
|
char *name = get_reg_name (regno);
|
|
fprintf (eb_stream, "dw %s,%s\n", name, name);
|
|
expect (name);
|
|
expect (" ");
|
|
get_hex_regs (1, regno);
|
|
expect_prompt ();
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Store the remote registers from the contents of the block REGS. */
|
|
|
|
static void
|
|
eb_store_registers ()
|
|
{
|
|
int i, j;
|
|
fprintf (eb_stream, "s gr1,%x\n", read_register (GR1_REGNUM));
|
|
expect_prompt ();
|
|
|
|
for (j = 0; j < 32; j += 16)
|
|
{
|
|
fprintf (eb_stream, "s gr%d,", j + 96);
|
|
for (i = 0; i < 15; ++i)
|
|
fprintf (eb_stream, "%x,", read_register (GR96_REGNUM + j + i));
|
|
fprintf (eb_stream, "%x\n", read_register (GR96_REGNUM + j + 15));
|
|
expect_prompt ();
|
|
}
|
|
|
|
for (j = 0; j < 128; j += 16)
|
|
{
|
|
fprintf (eb_stream, "s lr%d,", j);
|
|
for (i = 0; i < 15; ++i)
|
|
fprintf (eb_stream, "%x,", read_register (LR0_REGNUM + j + i));
|
|
fprintf (eb_stream, "%x\n", read_register (LR0_REGNUM + j + 15));
|
|
expect_prompt ();
|
|
}
|
|
|
|
fprintf (eb_stream, "s sr133,%x,%x,%x\n", read_register (BP_REGNUM),
|
|
read_register (FC_REGNUM), read_register (CR_REGNUM));
|
|
expect_prompt ();
|
|
fprintf (eb_stream, "s sr131,%x\n", read_register (Q_REGNUM));
|
|
expect_prompt ();
|
|
fprintf (eb_stream, "s sr0,");
|
|
for (i = 0; i < 11; ++i)
|
|
fprintf (eb_stream, "%x,", read_register (VAB_REGNUM + i));
|
|
fprintf (eb_stream, "%x\n", read_register (VAB_REGNUM + 11));
|
|
expect_prompt ();
|
|
}
|
|
|
|
/* Store register REGNO, or all if REGNO == 0.
|
|
Return errno value. */
|
|
int
|
|
eb_store_register (regno)
|
|
int regno;
|
|
{
|
|
if (regno == -1)
|
|
eb_store_registers ();
|
|
else
|
|
{
|
|
char *name = get_reg_name (regno);
|
|
fprintf (eb_stream, "s %s,%x\n", name, read_register (regno));
|
|
/* Setting GR1 changes the numbers of all the locals, so
|
|
invalidate the register cache. Do this *after* calling
|
|
read_register, because we want read_register to return the
|
|
value that write_register has just stuffed into the registers
|
|
array, not the value of the register fetched from the
|
|
inferior. */
|
|
if (regno == GR1_REGNUM)
|
|
registers_changed ();
|
|
expect_prompt ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* 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. */
|
|
|
|
void
|
|
eb_prepare_to_store ()
|
|
{
|
|
/* Do nothing, since we can store individual regs */
|
|
}
|
|
|
|
|
|
/* FIXME-someday! Merge these two. */
|
|
int
|
|
eb_xfer_inferior_memory (memaddr, myaddr, len, write, target)
|
|
CORE_ADDR memaddr;
|
|
char *myaddr;
|
|
int len;
|
|
int write;
|
|
struct target_ops *target; /* ignored */
|
|
{
|
|
if (write)
|
|
return eb_write_inferior_memory (memaddr, myaddr, len);
|
|
else
|
|
return eb_read_inferior_memory (memaddr, myaddr, len);
|
|
}
|
|
|
|
void
|
|
eb_files_info ()
|
|
{
|
|
printf ("\tAttached to %s at %d baud and running program %s.\n",
|
|
dev_name, baudrate, prog_name);
|
|
}
|
|
|
|
/* Copy LEN bytes of data from debugger memory at MYADDR
|
|
to inferior's memory at MEMADDR. Returns length moved. */
|
|
int
|
|
eb_write_inferior_memory (memaddr, myaddr, len)
|
|
CORE_ADDR memaddr;
|
|
char *myaddr;
|
|
int len;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
if ((i % 16) == 0)
|
|
fprintf (eb_stream, "sb %x,", memaddr + i);
|
|
if ((i % 16) == 15 || i == len - 1)
|
|
{
|
|
fprintf (eb_stream, "%x\n", ((unsigned char *)myaddr)[i]);
|
|
expect_prompt ();
|
|
}
|
|
else
|
|
fprintf (eb_stream, "%x,", ((unsigned char *)myaddr)[i]);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/* Read LEN bytes from inferior memory at MEMADDR. Put the result
|
|
at debugger address MYADDR. Returns length moved. */
|
|
int
|
|
eb_read_inferior_memory(memaddr, myaddr, len)
|
|
CORE_ADDR memaddr;
|
|
char *myaddr;
|
|
int len;
|
|
{
|
|
int i;
|
|
|
|
/* 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;
|
|
|
|
/* 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
|
|
eb_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
|
|
works--it never adds len to memaddr and gets 0. */
|
|
/* However, something like
|
|
eb_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. */
|
|
if (((memaddr - 1) + len) < memaddr) {
|
|
errno = EIO;
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
|
|
fprintf (eb_stream, "db %x,%x\n", startaddr,
|
|
(startaddr - 1) + len_this_pass);
|
|
expect ("\n");
|
|
|
|
/* Look for 8 hex digits. */
|
|
i = 0;
|
|
while (1)
|
|
{
|
|
if (isxdigit (readchar ()))
|
|
++i;
|
|
else
|
|
{
|
|
expect_prompt ();
|
|
error ("Hex digit expected from remote system.");
|
|
}
|
|
if (i >= 8)
|
|
break;
|
|
}
|
|
|
|
expect (" ");
|
|
|
|
for (i = 0; i < len_this_pass; i++)
|
|
get_hex_byte (&myaddr[count++]);
|
|
|
|
expect_prompt ();
|
|
|
|
startaddr += len_this_pass;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static void
|
|
eb_kill (args, from_tty)
|
|
char *args;
|
|
int from_tty;
|
|
{
|
|
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. */
|
|
|
|
void
|
|
eb_mourn_inferior ()
|
|
{
|
|
remove_breakpoints ();
|
|
generic_mourn_inferior (); /* Do all the proper things now */
|
|
}
|
|
/* Define the target subroutine names */
|
|
|
|
struct target_ops eb_ops = {
|
|
"amd-eb", "Remote serial AMD EBMON target",
|
|
"Use a remote computer running EBMON connected by a serial line.\n\
|
|
Arguments are the name of the device for the serial line,\n\
|
|
the speed to connect at in bits per second, and the filename of the\n\
|
|
executable as it exists on the remote computer. For example,\n\
|
|
target amd-eb /dev/ttya 9600 demo",
|
|
eb_open, eb_close,
|
|
0, eb_detach, eb_resume, eb_wait,
|
|
eb_fetch_register, eb_store_register,
|
|
eb_prepare_to_store, 0, 0, /* conv_to, conv_from */
|
|
eb_xfer_inferior_memory, eb_files_info,
|
|
0, 0, /* Breakpoints */
|
|
0, 0, 0, 0, 0, /* Terminal handling */
|
|
eb_kill,
|
|
0, /* load */
|
|
0, /* lookup_symbol */
|
|
eb_create_inferior,
|
|
eb_mourn_inferior,
|
|
process_stratum, 0, /* next */
|
|
1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
|
|
0, 0, /* Section pointers */
|
|
OPS_MAGIC, /* Always the last thing */
|
|
};
|
|
|
|
void
|
|
_initialize_remote_eb ()
|
|
{
|
|
add_target (&eb_ops);
|
|
}
|