1994-10-11 05:37:18 +01:00
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/* Remote debugging interface for boot monitors, for GDB.
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Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
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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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This file was derived from various remote-* modules. It is a collection
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of generic support functions so GDB can talk directly to a ROM based
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monitor. This saves use from having to hack an exception based handler
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into existance, and makes for quick porting.
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This module talks to a debug monitor called 'MONITOR', which
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We communicate with MONITOR via either a direct serial line, or a TCP
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(or possibly TELNET) stream to a terminal multiplexor,
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which in turn talks to the target board.
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*/
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#include "defs.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "wait.h"
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#include <varargs.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/types.h>
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#include "command.h"
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#include "serial.h"
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#include "monitor.h"
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#include "remote-utils.h"
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#ifdef HAVE_TERMIO
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# define TERMINAL struct termios
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#else
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# define TERMINAL struct sgttyb
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#endif
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struct monitor_ops *current_monitor;
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extern struct cmd_list_element *setlist;
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extern struct cmd_list_element *unsetlist;
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struct cmd_list_element *showlist;
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static int hashmark; /* flag set by "set hash" */
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/* FIXME: Replace with sr_get_debug (). */
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#define LOG_FILE "monitor.log"
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#if defined (LOG_FILE)
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FILE *log_file;
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#endif
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static int timeout = 24;
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/* Descriptor for I/O to remote machine. Initialize it to NULL so that
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monitor_open knows that we don't have a file open when the program starts.
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*/
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static serial_t monitor_desc = NULL;
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/* sets the download protocol, choices are srec, generic, boot */
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char *loadtype;
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static char *loadtype_str;
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static void set_loadtype_command();
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/*
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* set_loadtype_command -- set the type for downloading. Check to make
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* sure you have a support protocol for this target.
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*/
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static void
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set_loadtype_command (ignore, from_tty, c)
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char *ignore;
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int from_tty;
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struct cmd_list_element *c;
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{
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#if 0
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char *type;
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if (strcmp (LOADTYPES, "")) {
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error ("No loadtype set");
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return;
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}
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type = strtok(LOADTYPES, ",");
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if (STREQ (type, (*(char **) c->var))) {
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loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var));
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return;
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}
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while (type = strtok (NULL, ",") != (char *)NULL)
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if (STREQ (type, (*(char **) c->var)))
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loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var));
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#endif
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loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var));
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}
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/*
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* printf_monitor -- send data to monitor. Works just like printf.
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*/
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static void
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printf_monitor(va_alist)
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va_dcl
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{
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va_list args;
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char *pattern;
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char buf[200];
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int i;
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va_start(args);
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pattern = va_arg(args, char *);
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vsprintf(buf, pattern, args);
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1994-10-13 00:12:47 +01:00
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debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf);
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1994-10-11 05:37:18 +01:00
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if (SERIAL_WRITE(monitor_desc, buf, strlen(buf)))
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fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno));
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}
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1994-10-13 00:12:47 +01:00
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/*
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* debuglogs -- deal with debugging info to multiple sources. This takes
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* two real args, the first one is the level to be compared against
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* the sr_get_debug() value, the second arg is a printf buffer and args
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* to be formatted and printed. A CR is added after each string is printed.
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*/
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static void
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debuglogs(va_alist)
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va_dcl
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{
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va_list args;
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char *pattern, *p;
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char buf[200];
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char newbuf[300];
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int level, i;
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va_start(args);
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level = va_arg(args, int); /* get the debug level */
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if ((level <0) || (level > 100)) {
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error ("Bad argument passed to debuglogs()");
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return;
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}
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pattern = va_arg(args, char *); /* get the printf style pattern */
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vsprintf(buf, pattern, args); /* format the string */
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/* convert some characters so it'll look right in the log */
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p = newbuf;
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for (i=0 ; buf[i] != '\0'; i++) {
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switch (buf[i]) {
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case '\n': /* newlines */
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*p++ = '\\';
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*p++ = 'n';
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continue;
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case '\r': /* carriage returns */
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*p++ = '\\';
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*p++ = 'r';
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continue;
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case '\033': /* escape */
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*p++ = '\\';
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*p++ = 'e';
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continue;
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case '\t': /* tab */
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*p++ = '\\';
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*p++ = 't';
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continue;
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case '\b': /* backspace */
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*p++ = '\\';
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*p++ = 'b';
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continue;
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default: /* no change */
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*p++ = buf[i];
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}
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if (buf[i] < 26) { /* modify control characters */
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*p++ = '^';
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*p++ = buf[i] + 'A';
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continue;
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}
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}
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*p = '\0'; /* terminate the string */
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if (sr_get_debug() > level)
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puts (newbuf);
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#ifdef LOG_FILE /* write to the monitor log */
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if (log_file != 0x0) {
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fputs (newbuf, log_file);
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fputc ('\n', log_file);
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fflush (log_file);
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}
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#endif
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}
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1994-10-12 04:34:08 +01:00
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/* readchar -- read a character from the remote system, doing all the fancy
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* timeout stuff.
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*/
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1994-10-11 05:37:18 +01:00
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static int
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readchar(timeout)
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int timeout;
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{
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int c;
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c = SERIAL_READCHAR(monitor_desc, timeout);
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1994-10-13 00:12:47 +01:00
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if (sr_get_debug() > 4)
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1994-10-11 05:37:18 +01:00
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putchar(c & 0x7f);
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#ifdef LOG_FILE
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if (isascii (c))
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putc(c & 0x7f, log_file);
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#endif
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if (c >= 0)
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return c & 0x7f;
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1994-10-12 04:34:08 +01:00
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if (c == SERIAL_TIMEOUT) {
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if (timeout == 0)
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return c; /* Polls shouldn't generate timeout errors */
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error("Timeout reading from remote system.");
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}
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1994-10-11 05:37:18 +01:00
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perror_with_name("remote-monitor");
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}
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1994-10-12 04:34:08 +01:00
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/*
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* expect -- scan input from the remote system, until STRING is found.
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* If DISCARD is non-zero, then discard non-matching input, else print
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* it out. Let the user break out immediately.
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*/
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1994-10-11 05:37:18 +01:00
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static void
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expect (string, discard)
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char *string;
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int discard;
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{
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char *p = string;
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int c;
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1994-10-13 00:12:47 +01:00
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debuglogs (1, "Expecting \"%s\".", string);
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1994-10-11 05:37:18 +01:00
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immediate_quit = 1;
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while (1) {
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c = readchar(timeout);
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if (!isascii (c))
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continue;
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if (c == *p++) {
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if (*p == '\0') {
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immediate_quit = 0;
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if (sr_get_debug())
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printf ("\nMatched\n");
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return;
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}
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} else {
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if (!discard) {
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fwrite(string, 1, (p - 1) - string, stdout);
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putchar((char)c);
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fflush(stdout);
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}
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p = string;
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}
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}
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}
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/* Keep discarding input until we see the MONITOR prompt.
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The convention for dealing with the prompt is that you
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o give your command
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o *then* wait for the prompt.
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Thus the last thing that a procedure does with the serial line
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will be an expect_prompt(). Exception: monitor_resume does not
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wait for the prompt, because the terminal is being handed over
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to the inferior. However, the next thing which happens after that
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is a monitor_wait which does wait for the prompt.
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Note that this includes abnormal exit, e.g. error(). This is
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necessary to prevent getting into states from which we can't
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recover. */
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static void
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expect_prompt(discard)
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int discard;
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{
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#if defined (LOG_FILE)
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/* This is a convenient place to do this. The idea is to do it often
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enough that we never lose much data if we terminate abnormally. */
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fflush(log_file);
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#endif
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expect (PROMPT, discard);
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}
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/*
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* junk -- ignore junk characters. Returns a 1 if junk, 0 otherwise
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*/
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static int
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junk(ch)
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char ch;
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{
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switch (ch) {
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case ' ':
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case '-':
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case '\t':
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case '\r':
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case '\n':
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if (sr_get_debug() > 5)
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1994-10-13 00:12:47 +01:00
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debuglogs (5, "Ignoring \'%c\'.", ch);
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1994-10-11 05:37:18 +01:00
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return 1;
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default:
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if (sr_get_debug() > 5)
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1994-10-13 00:12:47 +01:00
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debuglogs (5, "Accepting \'%c\'.", ch);
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1994-10-11 05:37:18 +01:00
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return 0;
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}
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}
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/*
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* get_hex_digit -- Get a hex digit from the remote system & return its value.
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* If ignore is nonzero, ignore spaces, newline & tabs.
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*/
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static int
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get_hex_digit(ignore)
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int ignore;
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{
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static int ch;
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while (1) {
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ch = readchar(timeout);
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if (junk(ch))
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continue;
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if (sr_get_debug() > 4)
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1994-10-13 00:12:47 +01:00
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debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch);
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1994-10-11 05:37:18 +01:00
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if (ch >= '0' && ch <= '9')
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return ch - '0';
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else if (ch >= 'A' && ch <= 'F')
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return ch - 'A' + 10;
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else if (ch >= 'a' && ch <= 'f')
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return ch - 'a' + 10;
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else if (ch == ' ' && ignore)
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;
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else {
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expect_prompt(1);
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error("Invalid hex digit from remote system.");
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}
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}
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}
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/* get_hex_byte -- Get a byte from monitor and put it in *BYT.
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* Accept any number leading spaces.
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*/
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static void
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get_hex_byte (byt)
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char *byt;
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{
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int val;
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val = get_hex_digit (1) << 4;
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1994-10-13 00:12:47 +01:00
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debuglogs (4, "get_hex_digit() -- Read first nibble 0x%x", val);
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1994-10-11 05:37:18 +01:00
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val |= get_hex_digit (0);
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1994-10-13 00:12:47 +01:00
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debuglogs (4, "get_hex_digit() -- Read second nibble 0x%x", val);
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1994-10-11 05:37:18 +01:00
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*byt = val;
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1994-10-13 00:12:47 +01:00
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debuglogs (4, "get_hex_digit() -- Read a 0x%x", val);
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1994-10-11 05:37:18 +01:00
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}
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/*
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* get_hex_word -- Get N 32-bit words from remote, each preceded by a space,
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* and put them in registers starting at REGNO.
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*/
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static int
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get_hex_word ()
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{
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|
|
long val;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
val = 0;
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
val = (val << 4) + get_hex_digit (i == 0);
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (3, "get_hex_word() got a 0x%x.", val);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This is called not only when we first attach, but also when the
|
|
|
|
user types "run" after having attached. */
|
|
|
|
void
|
|
|
|
monitor_create_inferior (execfile, args, env)
|
|
|
|
char *execfile;
|
|
|
|
char *args;
|
|
|
|
char **env;
|
|
|
|
{
|
|
|
|
int entry_pt;
|
|
|
|
|
|
|
|
if (args && *args)
|
|
|
|
error("Can't pass arguments to remote MONITOR process");
|
|
|
|
|
|
|
|
if (execfile == 0 || exec_bfd == 0)
|
|
|
|
error("No exec file specified");
|
|
|
|
|
|
|
|
entry_pt = (int) bfd_get_start_address (exec_bfd);
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (2, "create_inferior(exexfile=%s, args=%s, env=%s)", execfile, args, env);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
/* 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? */
|
|
|
|
|
|
|
|
/* Let 'er rip... */
|
|
|
|
proceed ((CORE_ADDR)entry_pt, TARGET_SIGNAL_DEFAULT, 0);
|
|
|
|
}
|
|
|
|
|
1994-10-12 04:34:08 +01:00
|
|
|
/*
|
|
|
|
* monitor_open -- open a connection to a remote debugger.
|
|
|
|
* NAME is the filename used for communication.
|
|
|
|
*/
|
1994-10-11 05:37:18 +01:00
|
|
|
static int baudrate = 9600;
|
|
|
|
static char dev_name[100];
|
|
|
|
|
|
|
|
void
|
|
|
|
monitor_open(args, name, from_tty)
|
|
|
|
char *args;
|
|
|
|
char *name;
|
|
|
|
int from_tty;
|
|
|
|
{
|
|
|
|
|
|
|
|
if (args == NULL)
|
|
|
|
error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\
|
|
|
|
`target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name);
|
|
|
|
|
|
|
|
/* if (is_open) */
|
|
|
|
monitor_close(0);
|
|
|
|
|
|
|
|
strcpy(dev_name, args);
|
|
|
|
monitor_desc = SERIAL_OPEN(dev_name);
|
|
|
|
|
|
|
|
if (monitor_desc == NULL)
|
|
|
|
perror_with_name(dev_name);
|
|
|
|
|
|
|
|
if (baud_rate != -1)
|
|
|
|
{
|
|
|
|
if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate))
|
|
|
|
{
|
|
|
|
SERIAL_CLOSE (monitor_desc);
|
|
|
|
perror_with_name (name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
SERIAL_RAW(monitor_desc);
|
|
|
|
|
|
|
|
#if defined (LOG_FILE)
|
|
|
|
log_file = fopen (LOG_FILE, "w");
|
|
|
|
if (log_file == NULL)
|
|
|
|
perror_with_name (LOG_FILE);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* wake up the monitor and see if it's alive */
|
|
|
|
printf_monitor(INIT_CMD);
|
|
|
|
expect_prompt(1); /* See if we get a prompt */
|
|
|
|
|
|
|
|
/* try again to be sure */
|
|
|
|
printf_monitor(INIT_CMD);
|
|
|
|
expect_prompt(1); /* See if we get a prompt */
|
|
|
|
|
|
|
|
if (from_tty)
|
|
|
|
printf("Remote target %s connected to %s\n", TARGET_NAME, dev_name);
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
1994-10-12 04:34:08 +01:00
|
|
|
* monitor_close -- Close out all files and local state before this
|
|
|
|
* target loses control.
|
1994-10-11 05:37:18 +01:00
|
|
|
*/
|
|
|
|
|
|
|
|
void
|
|
|
|
monitor_close (quitting)
|
|
|
|
int quitting;
|
|
|
|
{
|
|
|
|
SERIAL_CLOSE(monitor_desc);
|
|
|
|
monitor_desc = NULL;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_close (quitting=%d)", quitting);
|
1994-10-12 04:34:08 +01:00
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
#if defined (LOG_FILE)
|
|
|
|
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");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
1994-10-12 04:34:08 +01:00
|
|
|
/*
|
|
|
|
* monitor_detach -- terminate the open connection to the remote
|
|
|
|
* debugger. Use this when you want to detach and do something
|
|
|
|
* else with your gdb.
|
|
|
|
*/
|
1994-10-11 05:37:18 +01:00
|
|
|
void
|
|
|
|
monitor_detach (from_tty)
|
|
|
|
int from_tty;
|
|
|
|
{
|
1994-10-13 00:12:47 +01:00
|
|
|
|
|
|
|
debuglogs (4, "monitor_detach ()");
|
1994-10-12 04:34:08 +01:00
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
pop_target(); /* calls monitor_close to do the real work */
|
|
|
|
if (from_tty)
|
|
|
|
printf ("Ending remote %s debugging\n", target_shortname);
|
|
|
|
}
|
1994-10-12 04:34:08 +01:00
|
|
|
|
|
|
|
/*
|
|
|
|
* monitor_attach -- attach GDB to the target.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
monitor_attach (args, from_tty)
|
|
|
|
char *args;
|
|
|
|
int from_tty;
|
|
|
|
{
|
|
|
|
if (from_tty)
|
|
|
|
printf ("Starting remote %s debugging\n", target_shortname);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
1994-10-12 04:34:08 +01:00
|
|
|
#ifdef LOG_FILE
|
|
|
|
fprintf (log_file, "\nmonitor_attach (args=%s)\n", args);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (sr_get_debug() > 4)
|
|
|
|
printf ("\nmonitor_attach (args=%s)\n", args);
|
|
|
|
|
|
|
|
printf_monitor (GO_CMD);
|
|
|
|
/* swallow the echo. */
|
|
|
|
expect (GO_CMD, 1);
|
|
|
|
}
|
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
/*
|
1994-10-12 04:34:08 +01:00
|
|
|
* monitor_resume -- Tell the remote machine to resume.
|
1994-10-11 05:37:18 +01:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
monitor_resume (pid, step, sig)
|
|
|
|
int pid, step;
|
|
|
|
enum target_signal sig;
|
|
|
|
{
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (4, "monitor_resume (step=%d, sig=%d)", step, sig);
|
1994-10-12 04:34:08 +01:00
|
|
|
|
|
|
|
if (step) {
|
|
|
|
printf_monitor (STEP_CMD);
|
|
|
|
/* wait for the echo. */
|
|
|
|
expect (STEP_CMD, 1);
|
|
|
|
} else {
|
|
|
|
printf_monitor (CONT_CMD);
|
|
|
|
/* swallow the echo. */
|
|
|
|
expect (CONT_CMD, 1);
|
|
|
|
}
|
1994-10-11 05:37:18 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* _wait -- Wait until the remote machine stops, then return,
|
|
|
|
* storing status in status just as `wait' would.
|
|
|
|
*/
|
|
|
|
|
|
|
|
int
|
|
|
|
monitor_wait (pid, status)
|
|
|
|
int pid;
|
|
|
|
struct target_waitstatus *status;
|
|
|
|
{
|
|
|
|
int old_timeout = timeout;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs(4, "monitor_wait (), printing extraneous text.", log_file);
|
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
status->kind = TARGET_WAITKIND_EXITED;
|
|
|
|
status->value.integer = 0;
|
|
|
|
|
|
|
|
timeout = 0; /* Don't time out -- user program is running. */
|
|
|
|
|
|
|
|
expect_prompt(0); /* Wait for prompt, outputting extraneous text */
|
1994-10-13 00:12:47 +01:00
|
|
|
if (sr_get_debug() > 4)
|
|
|
|
puts ("monitor_wait(), got the prompt.");
|
|
|
|
|
|
|
|
debuglogs (4, "monitor_wait(%x), got the prompt.", 12345678);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
status->kind = TARGET_WAITKIND_STOPPED;
|
|
|
|
status->value.sig = TARGET_SIGNAL_TRAP;
|
|
|
|
|
|
|
|
timeout = old_timeout;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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 *
|
|
|
|
get_reg_name (regno)
|
|
|
|
int regno;
|
|
|
|
{
|
|
|
|
static char buf[50];
|
|
|
|
const char *p;
|
|
|
|
char *b;
|
|
|
|
|
|
|
|
b = buf;
|
|
|
|
|
|
|
|
if (regno < 0)
|
|
|
|
return ("");
|
|
|
|
|
|
|
|
for (p = REGNAMES(regno); *p; p++)
|
|
|
|
*b++ = tolower(*p);
|
|
|
|
|
|
|
|
*b = '\000';
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (5, "Got name \"%s\" from regno #%d.", buf, regno);
|
1994-10-11 23:12:30 +01:00
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
/*
|
|
|
|
* monitor_fetch_registers -- read the remote registers into the
|
|
|
|
* block regs.
|
|
|
|
*/
|
1994-10-11 05:37:18 +01:00
|
|
|
void
|
|
|
|
monitor_fetch_registers ()
|
|
|
|
{
|
|
|
|
int regno;
|
|
|
|
|
|
|
|
/* yeah yeah, i know this is horribly inefficient. but it isn't done
|
|
|
|
very often... i'll clean it up later. */
|
|
|
|
|
|
|
|
for (regno = 0; regno <= PC_REGNUM; regno++)
|
|
|
|
monitor_fetch_register(regno);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
1994-10-11 23:12:30 +01:00
|
|
|
* monitor_fetch_register -- fetch register REGNO, or all registers if REGNO
|
|
|
|
* is -1. Returns errno value.
|
1994-10-11 05:37:18 +01:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
monitor_fetch_register (regno)
|
|
|
|
int regno;
|
|
|
|
{
|
|
|
|
int val, j;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_fetch_register (regno=%d)", get_reg_name (regno));
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
if (regno < 0) {
|
|
|
|
monitor_fetch_registers ();
|
|
|
|
} else {
|
|
|
|
char *name = get_reg_name (regno);
|
|
|
|
if (STREQ(name, ""))
|
|
|
|
return;
|
|
|
|
printf_monitor (ROMCMD(GET_REG), name); /* send the command */
|
|
|
|
expect (name, 1); /* then strip the leading garbage */
|
|
|
|
if (*ROMDELIM(GET_REG) != 0) { /* if there's a delimiter */
|
|
|
|
expect (ROMDELIM(GET_REG), 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
val = get_hex_word(); /* get the value, ignore junk */
|
|
|
|
supply_register (regno, (char *) &val);
|
|
|
|
|
|
|
|
if (*ROMDELIM(GET_REG) != 0) {
|
1994-10-11 23:12:30 +01:00
|
|
|
/*** expect (ROMRES(GET_REG)); ***/
|
1994-10-11 05:37:18 +01:00
|
|
|
printf_monitor (CMD_END);
|
|
|
|
}
|
|
|
|
expect_prompt (1);
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Store the remote registers from the contents of the block REGS. */
|
|
|
|
|
|
|
|
void
|
|
|
|
monitor_store_registers ()
|
|
|
|
{
|
|
|
|
int regno;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_store_registers()");
|
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
for (regno = 0; regno <= PC_REGNUM; regno++)
|
|
|
|
monitor_store_register(regno);
|
|
|
|
|
|
|
|
registers_changed ();
|
|
|
|
}
|
|
|
|
|
1994-10-11 23:12:30 +01:00
|
|
|
/*
|
|
|
|
* monitor_store_register -- store register REGNO, or all if REGNO == 0.
|
|
|
|
* return errno value.
|
|
|
|
*/
|
1994-10-11 05:37:18 +01:00
|
|
|
void
|
|
|
|
monitor_store_register (regno)
|
|
|
|
int regno;
|
|
|
|
{
|
|
|
|
char *name;
|
1994-10-11 23:12:30 +01:00
|
|
|
int i;
|
|
|
|
|
|
|
|
i = read_register(regno);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_store_register (regno=%d)", regno);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
if (regno < 0)
|
|
|
|
monitor_store_registers ();
|
|
|
|
else {
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (3, "Setting register %s to 0x%x", get_reg_name (regno), read_register (regno));
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
name = get_reg_name (regno);
|
|
|
|
if (STREQ(name, ""))
|
|
|
|
return;
|
1994-10-11 23:12:30 +01:00
|
|
|
printf_monitor (ROMCMD(SET_REG), name, read_register(regno));
|
|
|
|
expect (name, 1); /* strip the leading garbage */
|
1994-10-11 05:37:18 +01:00
|
|
|
if (*ROMDELIM(SET_REG) != 0) { /* if there's a delimiter */
|
|
|
|
expect (ROMDELIM(SET_REG), 1);
|
1994-10-11 23:12:30 +01:00
|
|
|
get_hex_word(1);
|
|
|
|
printf_monitor ("%d%s\n", i, CMD_END);
|
1994-10-11 05:37:18 +01:00
|
|
|
}
|
|
|
|
expect_prompt (1);
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
printf_monitor (SET_REG, get_reg_name (regno),
|
|
|
|
read_register (regno));
|
|
|
|
expect_prompt (1);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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
|
|
|
|
monitor_prepare_to_store ()
|
|
|
|
{
|
|
|
|
/* Do nothing, since we can store individual regs */
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
monitor_files_info ()
|
|
|
|
{
|
|
|
|
printf ("\tAttached to %s at %d baud.\n",
|
|
|
|
dev_name, baudrate);
|
|
|
|
}
|
|
|
|
|
1994-10-11 23:12:30 +01:00
|
|
|
/*
|
|
|
|
* monitor_write_inferior_memory -- Copy LEN bytes of data from debugger
|
|
|
|
* memory at MYADDR to inferior's memory at MEMADDR. Returns length moved.
|
|
|
|
*/
|
1994-10-11 05:37:18 +01:00
|
|
|
int
|
|
|
|
monitor_write_inferior_memory (memaddr, myaddr, len)
|
|
|
|
CORE_ADDR memaddr;
|
|
|
|
unsigned char *myaddr;
|
|
|
|
int len;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
char buf[10];
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len);
|
1994-10-11 23:12:30 +01:00
|
|
|
|
|
|
|
for (i = 0; i < len; i++) {
|
|
|
|
printf_monitor (ROMCMD(SET_MEM), memaddr + i, myaddr[i] );
|
|
|
|
if (*ROMDELIM(SET_MEM) != 0) { /* if there's a delimiter */
|
|
|
|
expect (ROMDELIM(SET_MEM), 1);
|
1994-10-11 05:37:18 +01:00
|
|
|
expect (CMD_DELIM);
|
|
|
|
printf_monitor ("%x", myaddr[i]);
|
|
|
|
}
|
1994-10-11 23:12:30 +01:00
|
|
|
/*** printf_monitor ("%x", myaddr[i]); ***/
|
|
|
|
if (sr_get_debug() > 1)
|
|
|
|
printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]);
|
|
|
|
if (*ROMDELIM(SET_MEM) != 0) {
|
|
|
|
expect (CMD_DELIM);
|
|
|
|
printf_monitor (CMD_END);
|
|
|
|
}
|
|
|
|
expect_prompt (1);
|
|
|
|
}
|
1994-10-11 05:37:18 +01:00
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* monitor_read_inferior_memory -- read LEN bytes from inferior memory
|
|
|
|
* at MEMADDR. Put the result at debugger address MYADDR. Returns
|
|
|
|
* length moved.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
monitor_read_inferior_memory(memaddr, myaddr, len)
|
|
|
|
CORE_ADDR memaddr;
|
|
|
|
char *myaddr;
|
|
|
|
int len;
|
|
|
|
{
|
|
|
|
int i, j;
|
|
|
|
char buf[20];
|
|
|
|
|
|
|
|
/* 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;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
/* 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
|
|
|
|
monitor_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
|
|
|
|
works--it never adds len To memaddr and gets 0. */
|
|
|
|
/* However, something like
|
|
|
|
monitor_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);
|
1994-10-13 00:12:47 +01:00
|
|
|
|
|
|
|
debuglogs (3, "Display %d bytes at %x", len_this_pass, startaddr);
|
1994-10-11 05:37:18 +01:00
|
|
|
|
|
|
|
for (i = 0; i < len_this_pass; i++) {
|
|
|
|
printf_monitor (ROMCMD(GET_MEM), startaddr, startaddr);
|
|
|
|
sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr);
|
|
|
|
if (*ROMDELIM(GET_MEM) != 0) { /* if there's a delimiter */
|
|
|
|
expect (ROMDELIM(GET_MEM), 1);
|
|
|
|
} else {
|
|
|
|
sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr);
|
|
|
|
expect (buf,1); /* get the command echo */
|
|
|
|
get_hex_word(1); /* strip away the address */
|
|
|
|
}
|
|
|
|
get_hex_byte (&myaddr[count++]); /* get the value at this address */
|
|
|
|
|
|
|
|
if (*ROMDELIM(GET_MEM) != 0) {
|
|
|
|
printf_monitor (CMD_END);
|
|
|
|
}
|
|
|
|
expect_prompt (1);
|
|
|
|
startaddr += 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* FIXME-someday! merge these two. */
|
|
|
|
int
|
|
|
|
monitor_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 monitor_write_inferior_memory (memaddr, myaddr, len);
|
|
|
|
else
|
|
|
|
return monitor_read_inferior_memory (memaddr, myaddr, len);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
monitor_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
|
|
|
|
monitor_mourn_inferior ()
|
|
|
|
{
|
|
|
|
remove_breakpoints ();
|
|
|
|
generic_mourn_inferior (); /* Do all the proper things now */
|
|
|
|
}
|
|
|
|
|
|
|
|
#define MAX_MONITOR_BREAKPOINTS 16
|
|
|
|
|
|
|
|
extern int memory_breakpoint_size;
|
|
|
|
static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] = {0};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* monitor_insert_breakpoint -- add a breakpoint
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
monitor_insert_breakpoint (addr, shadow)
|
|
|
|
CORE_ADDR addr;
|
|
|
|
char *shadow;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_insert_breakpoint() addr = 0x%x", addr);
|
1994-10-11 23:12:30 +01:00
|
|
|
|
|
|
|
for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++) {
|
|
|
|
if (breakaddr[i] == 0) {
|
|
|
|
breakaddr[i] = addr;
|
|
|
|
if (sr_get_debug() > 4)
|
|
|
|
printf ("Breakpoint at %x\n", addr);
|
|
|
|
monitor_read_inferior_memory(addr, shadow, memory_breakpoint_size);
|
|
|
|
printf_monitor(SET_BREAK_CMD, addr);
|
|
|
|
expect_prompt(1);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
fprintf(stderr, "Too many breakpoints (> 16) for monitor\n");
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* _remove_breakpoint -- Tell the monitor to remove a breakpoint
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
monitor_remove_breakpoint (addr, shadow)
|
|
|
|
CORE_ADDR addr;
|
|
|
|
char *shadow;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_remove_breakpoint() addr = 0x%x", addr);
|
1994-10-12 04:34:08 +01:00
|
|
|
|
|
|
|
for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++) {
|
|
|
|
if (breakaddr[i] == addr) {
|
|
|
|
breakaddr[i] = 0;
|
|
|
|
/* some monitors remove breakpoints based on the address */
|
|
|
|
if (CLR_BREAK_ADDR)
|
|
|
|
printf_monitor(CLR_BREAK_CMD, addr);
|
|
|
|
else
|
|
|
|
printf_monitor(CLR_BREAK_CMD, i);
|
|
|
|
expect_prompt(1);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
1994-10-11 05:37:18 +01:00
|
|
|
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
|
|
|
|
void
|
|
|
|
monitor_load (arg)
|
|
|
|
char *arg;
|
|
|
|
{
|
|
|
|
FILE *download;
|
|
|
|
char buf[DOWNLOAD_LINE_SIZE];
|
|
|
|
int i, bytes_read;
|
|
|
|
|
|
|
|
if (sr_get_debug())
|
|
|
|
printf ("Loading %s to monitor\n", arg);
|
|
|
|
|
|
|
|
download = fopen (arg, "r");
|
|
|
|
if (download == NULL)
|
|
|
|
{
|
|
|
|
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)) {
|
|
|
|
fprintf(stderr, "SERIAL_WRITE failed: (while downloading) %s\n", safe_strerror(errno));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
i = 0;
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
1994-10-12 04:34:08 +01:00
|
|
|
/*
|
|
|
|
* monitor_command -- put a command string, in args, out to MONITOR.
|
|
|
|
* Output from MONITOR is placed on the users terminal until the
|
|
|
|
* prompt is seen. FIXME: We read the charcters ourseleves here
|
|
|
|
* cause of a nasty echo.
|
|
|
|
*/
|
1994-10-11 05:37:18 +01:00
|
|
|
void
|
|
|
|
monitor_command (args, fromtty)
|
|
|
|
char *args;
|
|
|
|
int fromtty;
|
|
|
|
{
|
1994-10-12 04:34:08 +01:00
|
|
|
|
|
|
|
char *p;
|
|
|
|
char c, cp;
|
|
|
|
p = PROMPT;
|
|
|
|
|
1994-10-13 00:12:47 +01:00
|
|
|
debuglogs (1, "monitor_command (args=%s)", args);
|
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
if (monitor_desc == NULL)
|
|
|
|
error("monitor target not open.");
|
1994-10-12 04:34:08 +01:00
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
if (!args)
|
|
|
|
error("Missing command.");
|
|
|
|
|
1994-10-12 04:34:08 +01:00
|
|
|
printf_monitor ("%s\n", args);
|
|
|
|
|
1994-10-11 05:37:18 +01:00
|
|
|
expect_prompt(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* _initialize_remote_monitors -- setup a few addtitional commands that
|
|
|
|
* are usually only used by monitors.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
_initialize_remote_monitors ()
|
|
|
|
{
|
|
|
|
struct cmd_list_element *c;
|
|
|
|
|
|
|
|
/* this sets the type of download protocol */
|
|
|
|
c = add_set_cmd ("loadtype", no_class, var_string, (char *)&loadtype_str,
|
|
|
|
"Set the type of the remote load protocol.\n", &setlist);
|
|
|
|
c->function.sfunc = set_loadtype_command;
|
|
|
|
add_show_from_set (c, &showlist);
|
|
|
|
loadtype_str = savestring ("generic", 8);
|
|
|
|
|
|
|
|
add_show_from_set (add_set_cmd ("hash", no_class, var_boolean,
|
|
|
|
(char *)&hashmark,
|
|
|
|
"Set display of activity while downloading a file.\n\
|
|
|
|
When enabled, a period \'.\' is displayed.",
|
|
|
|
&setlist),
|
|
|
|
&showlist);
|
|
|
|
|
|
|
|
/* generic monitor command */
|
|
|
|
add_com ("monitor", class_obscure, monitor_command,
|
|
|
|
"Send a command to the debug monitor.");
|
|
|
|
}
|