-/* Remote debugging interface for AMD 29000 EBMON on IBM PC, for GDB.
+/* Remote debugging interface for Tandem ST2000 phone switch, for GDB.
Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by Jim Kingdon for Cygnus.
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
+/* 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):
+
+ "This is like remote.c but is for an esoteric situation--
+ having an a29k 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. */
+ over the net in real time."
-#define TM_FILE_OVERRIDE
-#include "defs.h"
-#include <string.h>
-#include "tm-29k.h"
+ In reality, this module talks to a debug monitor called 'STDEBUG', which
+ runs in a phone switch. We communicate with STDEBUG via either a direct
+ serial line, or a TCP (or possibly TELNET) stream to a terminal multiplexor,
+ which in turn talks to the phone switch. */
-#include "inferior.h"
+#include "defs.h"
+#include "gdbcore.h"
+#include "target.h"
#include "wait.h"
-#include "value.h"
-#include <ctype.h>
-#include <fcntl.h>
+#include <varargs.h>
#include <signal.h>
-#include <errno.h>
-#include "terminal.h"
-#include "target.h"
-#include "gdbcore.h"
+#include <string.h>
+#include <sys/types.h>
+#include "serial.h"
-extern struct target_ops eb_ops; /* Forward declaration */
+extern struct target_ops st2000_ops; /* Forward declaration */
-static void eb_close();
+static void st2000_close();
+static void st2000_fetch_register();
+static void st2000_store_register();
-#define LOG_FILE "eb.log"
+#define LOG_FILE "st2000.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
+ st2000_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;
+static serial_t st2000_desc;
+
+/* Send data to stdebug. Works just like printf. */
+
+static void
+printf_stdebug(va_alist)
+ va_dcl
+{
+ va_list args;
+ char *pattern;
+ char buf[200];
+
+ va_start(args);
+
+ pattern = va_arg(args, char *);
+
+ vsprintf(buf, pattern, args);
+ if (SERIAL_WRITE(st2000_desc, buf, strlen(buf)))
+ fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno));
+}
+
+/* Read a character from the remote system, doing all the fancy timeout
+ stuff. */
-/* Read a character from the remote system, doing all the fancy
- timeout stuff. */
static int
-readchar ()
+readchar(timeout)
+ int timeout;
{
- 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)
+ int c;
+
+ c = SERIAL_READCHAR(st2000_desc, timeout);
+
+#ifdef LOG_FILE
+ putc(c & 0x7f, log_file);
+#endif
+
+ if (c >= 0)
+ return c & 0x7f;
+
+ if (c == SERIAL_TIMEOUT)
{
- if (errno == EINTR)
- error ("Timeout reading from remote system.");
- else
- perror_with_name ("remote");
+ if (timeout == 0)
+ return c; /* Polls shouldn't generate timeout errors */
+
+ error("Timeout reading from remote system.");
}
- 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;
+ perror_with_name("remote-st2000");
}
-/* Keep discarding input from the remote system, until STRING is found.
+/* 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
-expect (string)
+expect(string, discard)
char *string;
+ int discard;
{
char *p = string;
+ int c;
immediate_quit = 1;
while (1)
{
- if (readchar() == *p)
+ c = readchar(timeout);
+ if (c == *p++)
{
- p++;
if (*p == '\0')
{
immediate_quit = 0;
}
}
else
- p = string;
+ {
+ if (!discard)
+ {
+ fwrite(string, 1, (p - 1) - string, stdout);
+ putchar((char)c);
+ fflush(stdout);
+ }
+ p = string;
+ }
}
}
-/* Keep discarding input until we see the ebmon prompt.
+/* Keep discarding input until we see the STDEBUG 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
+ will be an expect_prompt(). Exception: st2000_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.
+ is a st2000_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 ()
+expect_prompt(discard)
+ int discard;
{
#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);
+ fflush(log_file);
#endif
- expect ("\n# ");
+ expect ("dbug> ", 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
-get_hex_digit (ignore_space)
+get_hex_digit(ignore_space)
int ignore_space;
{
int ch;
while (1)
{
- ch = readchar ();
+ ch = readchar(timeout);
if (ch >= '0' && ch <= '9')
return ch - '0';
else if (ch >= 'A' && ch <= 'F')
;
else
{
- expect_prompt ();
- error ("Invalid hex digit from remote system.");
+ expect_prompt(1);
+ error("Invalid hex digit from remote system.");
}
}
}
-/* Get a byte from eb_desc and put it in *BYT. Accept any number
+/* Get a byte from stdebug and put it in *BYT. Accept any number
leading spaces. */
static void
get_hex_byte (byt)
val = 0;
for (j = 0; j < 8; j++)
val = (val << 4) + get_hex_digit (j == 0);
- supply_register (regno++, &val);
+ supply_register (regno++, (char *) &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)
+st2000_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");
+ error("Can't pass arguments to remote STDEBUG process");
if (execfile == 0 || exec_bfd == 0)
- error ("No exec file specified");
+ error("No exec file specified");
entry_pt = (int) bfd_get_start_address (exec_bfd);
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. */
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
+/* Open a connection to a remote debugger.
+ NAME is the filename used for communication. */
-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},
-};
+static int baudrate = 9600;
+static char dev_name[100];
-int damn_b (rate)
- int rate;
+static void
+st2000_open(args, from_tty)
+ char *args;
+ int from_tty;
{
- int i;
-
- for (i = 0; baudtab[i].rate != -1; i++)
- if (rate == baudtab[i].rate) return baudtab[i].damn_b;
- return B38400; /* Random */
-}
+ int n;
+ char junk[100];
+ target_preopen(from_tty);
+
+ n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk);
-/* 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. */
+ if (n != 2)
+ error("Bad arguments. Usage: target st2000 <device> <speed>\n\
+or target st2000 <host> <port>\n");
-static int baudrate = 9600;
-static char *dev_name;
-void
-eb_open (name, from_tty)
- char *name;
- int from_tty;
-{
- TERMINAL sg;
+ st2000_close(0);
- char *p;
+ st2000_desc = SERIAL_OPEN(dev_name);
- 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
+ if (!st2000_desc)
+ perror_with_name(dev_name);
- ioctl (eb_desc, TIOCSETP, &sg);
- eb_stream = fdopen (eb_desc, "r+");
+ SERIAL_SETBAUDRATE(st2000_desc, baudrate);
- 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
+ SERIAL_RAW(st2000_desc);
- /* Set up read timeout timer. */
- if ((void (*)) signal (SIGALRM, eb_timer) == (void (*)) -1)
- perror ("eb_open: error in signal");
-#endif
+ push_target(&st2000_ops);
#if defined (LOG_FILE)
log_file = fopen (LOG_FILE, "w");
#endif
/* Hello? Are you there? */
- write (eb_desc, "\n", 1);
+ printf_stdebug("\003"); /* ^C wakes up dbug */
- expect_prompt ();
+ expect_prompt(1);
+
+ if (from_tty)
+ printf("Remote %s connected to %s\n", target_shortname,
+ dev_name);
}
/* Close out all files and local state before this target loses control. */
static void
-eb_close (quitting)
+st2000_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;
+ SERIAL_CLOSE(st2000_desc);
#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");
+ if (ferror(log_file))
+ fprintf(stderr, "Error writing log file.\n");
+ if (fclose(log_file) != 0)
+ fprintf(stderr, "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)
+static void
+st2000_detach (from_tty)
int from_tty;
{
- pop_target(); /* calls eb_close to do the real work */
+ pop_target(); /* calls st2000_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)
+static void
+st2000_resume (step, sig)
int step, sig;
{
if (step)
{
- write (eb_desc, "t 1,s\n", 6);
+ printf_stdebug ("ST\r");
/* 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;
+ expect ("ST\r", 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");
- }
+ printf_stdebug ("GO\r");
+ /* Swallow the echo. */
+ expect ("GO\r", 1);
}
}
/* Wait until the remote machine stops, then return,
storing status in STATUS just as `wait' would. */
-int
-eb_wait (status)
+static int
+st2000_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;
+ expect_prompt(0); /* Wait for prompt, outputting extraneous text */
- if (ch == *ep || *ep == '?')
- {
- ep++;
- if (*ep == '\0')
- break;
-
- if (!ch_handled)
- *swallowed_p++ = ch;
- ch_handled = 1;
- }
- else
- ep = exitmsg;
+ WSETSTOP ((*status), SIGTRAP);
- 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.
+/* Return the name of register number REGNO in the form input and output by
+ STDEBUG. Currently, REGISTER_NAMES just happens to contain exactly what
+ STDEBUG wants. Lets take advantage of that just as long as possible! */
- 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");
+ static char buf[50];
+ const char *p;
+ char *b;
+
+ b = buf;
+
+ for (p = reg_names[regno]; *p; p++)
+ *b++ = toupper(*p);
+ *b = '\000';
+
return buf;
}
/* Read the remote registers into the block REGS. */
static void
-eb_fetch_registers ()
+st2000_fetch_registers ()
{
- int reg_index;
- int regnum_index;
- char tempbuf[10];
- int i;
+ int regno;
-#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
+ /* Yeah yeah, I know this is horribly inefficient. But it isn't done
+ very often... I'll clean it up later. */
- 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 ();
+ for (regno = 0; regno <= PC_REGNUM; regno++)
+ st2000_fetch_register(regno);
}
/* Fetch register REGNO, or all registers if REGNO is -1.
Returns errno value. */
-void
-eb_fetch_register (regno)
+static void
+st2000_fetch_register (regno)
int regno;
{
if (regno == -1)
- eb_fetch_registers ();
+ st2000_fetch_registers ();
else
{
char *name = get_reg_name (regno);
- fprintf (eb_stream, "dw %s,%s\n", name, name);
- expect (name);
- expect (" ");
+ printf_stdebug ("DR %s\r", name);
+ expect (name, 1);
+ expect (" : ", 1);
get_hex_regs (1, regno);
- expect_prompt ();
+ expect_prompt (1);
}
return;
}
/* Store the remote registers from the contents of the block REGS. */
static void
-eb_store_registers ()
+st2000_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 ();
- }
+ int regno;
- 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 ();
- }
+ for (regno = 0; regno <= PC_REGNUM; regno++)
+ st2000_store_register(regno);
- 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 ();
+ registers_changed ();
}
/* Store register REGNO, or all if REGNO == 0.
Return errno value. */
-int
-eb_store_register (regno)
+static void
+st2000_store_register (regno)
int regno;
{
if (regno == -1)
- eb_store_registers ();
+ st2000_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 ();
+ printf_stdebug ("PR %s %x\r", get_reg_name (regno),
+ read_register (regno));
+
+ expect_prompt (1);
}
- return 0;
}
/* Get ready to modify the registers array. On machines which store
that registers contains all the registers from the program being
debugged. */
-void
-eb_prepare_to_store ()
+static void
+st2000_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 ()
+static void
+st2000_files_info ()
{
- printf ("\tAttached to %s at %d baud and running program %s.\n",
- dev_name, baudrate, prog_name);
+ printf ("\tAttached to %s at %d baud.\n",
+ dev_name, baudrate);
}
/* 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)
+static int
+st2000_write_inferior_memory (memaddr, myaddr, len)
CORE_ADDR memaddr;
- char *myaddr;
+ unsigned 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]);
+ printf_stdebug ("PM.B %x %x\r", memaddr + i, myaddr[i]);
+ expect_prompt (1);
}
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)
+static int
+st2000_read_inferior_memory(memaddr, myaddr, len)
CORE_ADDR memaddr;
char *myaddr;
int 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
- eb_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
+ st2000_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)
+ st2000_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) {
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 (" ");
+ printf_stdebug ("DI.L %x %x\r", startaddr, len_this_pass);
+ expect (": ", 1);
for (i = 0; i < len_this_pass; i++)
get_hex_byte (&myaddr[count++]);
- expect_prompt ();
+ expect_prompt (1);
startaddr += len_this_pass;
}
return len;
}
+/* FIXME-someday! Merge these two. */
+static int
+st2000_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 st2000_write_inferior_memory (memaddr, myaddr, len);
+ else
+ return st2000_read_inferior_memory (memaddr, myaddr, len);
+}
+
static void
-eb_kill (args, from_tty)
+st2000_kill (args, from_tty)
char *args;
int from_tty;
{
run again without a download. Don't leave it full of breakpoint
instructions. */
-void
-eb_mourn_inferior ()
+static void
+st2000_mourn_inferior ()
{
remove_breakpoints ();
generic_mourn_inferior (); /* Do all the proper things now */
}
+
+#define MAX_STDEBUG_BREAKPOINTS 16
+
+extern int memory_breakpoint_size;
+static CORE_ADDR breakaddr[MAX_STDEBUG_BREAKPOINTS] = {0};
+
+static int
+st2000_insert_breakpoint (addr, shadow)
+ CORE_ADDR addr;
+ char *shadow;
+{
+ int i;
+
+ for (i = 0; i <= MAX_STDEBUG_BREAKPOINTS; i++)
+ if (breakaddr[i] == 0)
+ {
+ breakaddr[i] = addr;
+
+ st2000_read_inferior_memory(addr, shadow, memory_breakpoint_size);
+ printf_stdebug("BR %x H\r", addr);
+ expect_prompt(1);
+ return 0;
+ }
+
+ fprintf(stderr, "Too many breakpoints (> 16) for STDBUG\n");
+ return 1;
+}
+
+static int
+st2000_remove_breakpoint (addr, shadow)
+ CORE_ADDR addr;
+ char *shadow;
+{
+ int i;
+
+ for (i = 0; i < MAX_STDEBUG_BREAKPOINTS; i++)
+ if (breakaddr[i] == addr)
+ {
+ breakaddr[i] = 0;
+
+ printf_stdebug("CB %d\r", i);
+ expect_prompt(1);
+ return 0;
+ }
+
+ fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr);
+ return 1;
+}
+
+
+/* Put a command string, in args, out to STDBUG. Output from STDBUG is placed
+ on the users terminal until the prompt is seen. */
+
+static void
+st2000_command (args, fromtty)
+ char *args;
+ int fromtty;
+{
+ if (!st2000_desc)
+ error("st2000 target not open.");
+
+ if (!args)
+ error("Missing command.");
+
+ printf_stdebug("%s\r", args);
+ expect_prompt(0);
+}
+
+/* Connect the user directly to STDBUG. This command acts just like the
+ 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
+
+/*static struct ttystate ttystate;*/
+
+static void
+cleanup_tty()
+{
+ printf("\r\n[Exiting connect mode]\r\n");
+/* SERIAL_RESTORE(0, &ttystate);*/
+}
+
+#if 0
+/* This all should now be in serial.c */
+
+static void
+connect_command (args, fromtty)
+ char *args;
+ int fromtty;
+{
+ fd_set readfds;
+ int numfds;
+ int c;
+ char cur_esc = 0;
+
+ dont_repeat();
+
+ if (st2000_desc < 0)
+ error("st2000 target not open.");
+
+ if (args)
+ fprintf("This command takes no args. They have been ignored.\n");
+
+ printf("[Entering connect mode. Use ~. or ~^D to escape]\n");
+
+ serial_raw(0, &ttystate);
+
+ make_cleanup(cleanup_tty, 0);
+
+ FD_ZERO(&readfds);
+
+ while (1)
+ {
+ do
+ {
+ FD_SET(0, &readfds);
+ FD_SET(st2000_desc, &readfds);
+ numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0);
+ }
+ while (numfds == 0);
+
+ if (numfds < 0)
+ perror_with_name("select");
+
+ if (FD_ISSET(0, &readfds))
+ { /* tty input, send to stdebug */
+ c = getchar();
+ if (c < 0)
+ perror_with_name("connect");
+
+ printf_stdebug("%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(st2000_desc, &readfds))
+ {
+ while (1)
+ {
+ c = readchar(0);
+ if (c < 0)
+ break;
+ putchar(c);
+ }
+ fflush(stdout);
+ }
+ }
+}
+#endif /* 0 */
+
/* 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\
+struct target_ops st2000_ops = {
+ "st2000",
+ "Remote serial Tandem ST2000 target",
+ "Use a remote computer running STDEBUG connected by a serial line,\n\
+or a network connection.\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 */
+the speed to connect at in bits per second.",
+ st2000_open,
+ st2000_close,
+ 0,
+ st2000_detach,
+ st2000_resume,
+ st2000_wait,
+ st2000_fetch_register,
+ st2000_store_register,
+ st2000_prepare_to_store,
+ st2000_xfer_inferior_memory,
+ st2000_files_info,
+ st2000_insert_breakpoint,
+ st2000_remove_breakpoint, /* Breakpoints */
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, /* Terminal handling */
+ st2000_kill,
+ 0, /* load */
+ 0, /* lookup_symbol */
+ st2000_create_inferior,
+ st2000_mourn_inferior,
+ 0, /* can_run */
+ 0, /* notice_signals */
+ 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 ()
+_initialize_remote_st2000 ()
{
- add_target (&eb_ops);
+ add_target (&st2000_ops);
+ add_com ("st2000 <command>", class_obscure, st2000_command,
+ "Send a command to the STDBUG monitor.");
+ add_com ("connect", class_obscure, connect_command,
+ "Connect the terminal directly up to the STDBUG command monitor.\n\
+Use <CR>~. or <CR>~^D to break out.");
}
projects / deliverable / binutils-gdb.git / blobdiff