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21ed3dcdbe
* monitor.c (monitor_load): check the load type and load the file accordingly. Default to gr_load_image(). * monitor.c (monitor_load_ascii_srec): Load an ascii file in srecord format by downloading to the monitor. * w89k-rom.c, op50n-rom.c: set supported load types.
1306 lines
32 KiB
C
1306 lines
32 KiB
C
/* 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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extern char *version;
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extern char *host_name;
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extern char *target_name;
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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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static void monitor_load_srec();
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static int monitor_write_srec();
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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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char *tmp;
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char *type;
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if (STREQ (LOADTYPES, "")) {
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error ("No loadtype set");
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return;
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}
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tmp = savestring (LOADTYPES, strlen(LOADTYPES));
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type = strtok(tmp, ",");
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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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return;
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}
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free (tmp);
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error ("Loadtype \"%s\" does not exist.", (*(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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debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf);
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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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/*
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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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/* 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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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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if (sr_get_debug() > 4)
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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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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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#ifdef LOG_FILE
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fputc ("ERROR: Timeout reading from remote system", log_file);
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#endif
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}
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perror_with_name("remote-monitor");
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}
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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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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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debuglogs (1, "Expecting \"%s\".", string);
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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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debuglogs (4, "Matched");
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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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debuglogs (5, "Ignoring \'%c\'.", ch);
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return 1;
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default:
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if (sr_get_debug() > 5)
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debuglogs (5, "Accepting \'%c\'.", ch);
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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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debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch);
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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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debuglogs (4, "get_hex_digit() -- Read first nibble 0x%x", val);
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val |= get_hex_digit (0);
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debuglogs (4, "get_hex_digit() -- Read second nibble 0x%x", val);
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*byt = val;
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debuglogs (4, "get_hex_digit() -- Read a 0x%x", val);
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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;
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int i;
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val = 0;
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for (i = 0; i < 8; i++)
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val = (val << 4) + get_hex_digit (i == 0);
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debuglogs (4, "get_hex_word() got a 0x%x.", val);
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return val;
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}
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/* This is called not only when we first attach, but also when the
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user types "run" after having attached. */
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void
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monitor_create_inferior (execfile, args, env)
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char *execfile;
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char *args;
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char **env;
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{
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int entry_pt;
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if (args && *args)
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error("Can't pass arguments to remote MONITOR process");
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if (execfile == 0 || exec_bfd == 0)
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error("No exec file specified");
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entry_pt = (int) bfd_get_start_address (exec_bfd);
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debuglogs (1, "create_inferior(exexfile=%s, args=%s, env=%s)", execfile, args, env);
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/* The "process" (board) is already stopped awaiting our commands, and
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the program is already downloaded. We just set its PC and go. */
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clear_proceed_status ();
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/* Tell wait_for_inferior that we've started a new process. */
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init_wait_for_inferior ();
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/* Set up the "saved terminal modes" of the inferior
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based on what modes we are starting it with. */
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target_terminal_init ();
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/* Install inferior's terminal modes. */
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target_terminal_inferior ();
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/* insert_step_breakpoint (); FIXME, do we need this? */
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/* Let 'er rip... */
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proceed ((CORE_ADDR)entry_pt, TARGET_SIGNAL_DEFAULT, 0);
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}
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/*
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* monitor_open -- open a connection to a remote debugger.
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* NAME is the filename used for communication.
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*/
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static int baudrate = 9600;
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static char dev_name[100];
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void
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monitor_open(args, name, from_tty)
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char *args;
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char *name;
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int from_tty;
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{
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if (args == NULL)
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error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\
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`target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name);
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/* if (is_open) */
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monitor_close(0);
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strcpy(dev_name, args);
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monitor_desc = SERIAL_OPEN(dev_name);
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if (monitor_desc == NULL)
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perror_with_name(dev_name);
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if (baud_rate != -1) {
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if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) {
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SERIAL_CLOSE (monitor_desc);
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perror_with_name (name);
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}
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}
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SERIAL_RAW(monitor_desc);
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#if defined (LOG_FILE)
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log_file = fopen (LOG_FILE, "w");
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if (log_file == NULL)
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perror_with_name (LOG_FILE);
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fprintf_filtered (log_file, "GDB %s (%s", version, host_name);
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fprintf_filtered (log_file, " --target %s)\n", target_name);
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fprintf_filtered (log_file, "Remote target %s connected to %s\n\n", TARGET_NAME, dev_name);
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#endif
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/* wake up the monitor and see if it's alive */
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printf_monitor(INIT_CMD);
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expect_prompt(1); /* See if we get a prompt */
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/* try again to be sure */
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printf_monitor(INIT_CMD);
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expect_prompt(1); /* See if we get a prompt */
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if (from_tty)
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printf("Remote target %s connected to %s\n", TARGET_NAME, dev_name);
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}
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/*
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* monitor_close -- Close out all files and local state before this
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* target loses control.
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*/
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void
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monitor_close (quitting)
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int quitting;
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{
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SERIAL_CLOSE(monitor_desc);
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monitor_desc = NULL;
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debuglogs (1, "monitor_close (quitting=%d)", quitting);
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#if defined (LOG_FILE)
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if (log_file) {
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|
if (ferror(log_file))
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fprintf(stderr, "Error writing log file.\n");
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if (fclose(log_file) != 0)
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fprintf(stderr, "Error closing log file.\n");
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}
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#endif
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}
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/*
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* monitor_detach -- terminate the open connection to the remote
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* debugger. Use this when you want to detach and do something
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* else with your gdb.
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*/
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void
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monitor_detach (from_tty)
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int from_tty;
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{
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debuglogs (1, "monitor_detach ()");
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pop_target(); /* calls monitor_close to do the real work */
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if (from_tty)
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printf ("Ending remote %s debugging\n", target_shortname);
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}
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|
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/*
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|
* monitor_attach -- attach GDB to the target.
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|
*/
|
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void
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monitor_attach (args, from_tty)
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char *args;
|
|
int from_tty;
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{
|
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if (from_tty)
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printf ("Starting remote %s debugging\n", target_shortname);
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debuglogs (1, "monitor_attach (args=%s)", args);
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printf_monitor (GO_CMD);
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|
/* swallow the echo. */
|
|
expect (GO_CMD, 1);
|
|
}
|
|
|
|
/*
|
|
* monitor_resume -- Tell the remote machine to resume.
|
|
*/
|
|
void
|
|
monitor_resume (pid, step, sig)
|
|
int pid, step;
|
|
enum target_signal sig;
|
|
{
|
|
debuglogs (1, "monitor_resume (step=%d, sig=%d)", step, sig);
|
|
|
|
if (step) {
|
|
printf_monitor (STEP_CMD);
|
|
} else {
|
|
printf_monitor (CONT_CMD);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* monitor_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;
|
|
|
|
debuglogs(1, "monitor_wait (), printing extraneous text.");
|
|
|
|
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 */
|
|
debuglogs (4, "monitor_wait(), got the prompt.");
|
|
|
|
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';
|
|
|
|
debuglogs (5, "Got name \"%s\" from regno #%d.", buf, regno);
|
|
|
|
return buf;
|
|
}
|
|
|
|
/*
|
|
* monitor_fetch_registers -- read the remote registers into the
|
|
* block regs.
|
|
*/
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* monitor_fetch_register -- fetch register REGNO, or all registers if REGNO
|
|
* is -1. Returns errno value.
|
|
*/
|
|
void
|
|
monitor_fetch_register (regno)
|
|
int regno;
|
|
{
|
|
int val, j;
|
|
|
|
debuglogs (1, "monitor_fetch_register (reg=%s)", get_reg_name (regno));
|
|
|
|
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) {
|
|
/*** expect (ROMRES(GET_REG)); ***/
|
|
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;
|
|
|
|
debuglogs (1, "monitor_store_registers()");
|
|
|
|
for (regno = 0; regno <= PC_REGNUM; regno++)
|
|
monitor_store_register(regno);
|
|
|
|
registers_changed ();
|
|
}
|
|
|
|
/*
|
|
* monitor_store_register -- store register REGNO, or all if REGNO == 0.
|
|
* return errno value.
|
|
*/
|
|
void
|
|
monitor_store_register (regno)
|
|
int regno;
|
|
{
|
|
char *name;
|
|
int i;
|
|
|
|
i = read_register(regno);
|
|
|
|
debuglogs (1, "monitor_store_register (regno=%d)", regno);
|
|
|
|
if (regno < 0)
|
|
monitor_store_registers ();
|
|
else {
|
|
debuglogs (3, "Setting register %s to 0x%x", get_reg_name (regno), read_register (regno));
|
|
|
|
name = get_reg_name (regno);
|
|
if (STREQ(name, ""))
|
|
return;
|
|
printf_monitor (ROMCMD(SET_REG), name, read_register(regno));
|
|
expect (name, 1); /* strip the leading garbage */
|
|
if (*ROMDELIM(SET_REG) != 0) { /* if there's a delimiter */
|
|
expect (ROMDELIM(SET_REG), 1);
|
|
get_hex_word(1);
|
|
printf_monitor ("%d%s\n", i, CMD_END);
|
|
}
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* monitor_write_inferior_memory -- Copy LEN bytes of data from debugger
|
|
* memory at MYADDR to inferior's memory at MEMADDR. Returns length moved.
|
|
*/
|
|
int
|
|
monitor_write_inferior_memory (memaddr, myaddr, len)
|
|
CORE_ADDR memaddr;
|
|
unsigned char *myaddr;
|
|
int len;
|
|
{
|
|
int i;
|
|
char buf[10];
|
|
|
|
debuglogs (1, "monitor_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len);
|
|
|
|
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);
|
|
expect (CMD_DELIM);
|
|
printf_monitor ("%x", myaddr[i]);
|
|
}
|
|
/*** 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);
|
|
}
|
|
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;
|
|
|
|
debuglogs (1, "monitor_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, 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
|
|
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);
|
|
|
|
debuglogs (3, "Display %d bytes at %x", len_this_pass, startaddr);
|
|
|
|
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;
|
|
|
|
debuglogs (1, "monitor_insert_breakpoint() addr = 0x%x", addr);
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
debuglogs (1, "monitor_remove_breakpoint() addr = 0x%x", addr);
|
|
|
|
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;
|
|
}
|
|
}
|
|
fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr);
|
|
return 1;
|
|
}
|
|
|
|
/* monitor_load -- load a file. This file determines which of the
|
|
* supported formats to use. The current types are:
|
|
* FIXME: not all types supported yet.
|
|
* default - reads any file using bfd and writes it to memory.
|
|
* srec - reads binary file using bfd and writes it as an
|
|
* ascii srecord.
|
|
* xmodem-bin - reads a binary file using bfd, and downloads it
|
|
* using xmodem protocol.
|
|
* xmodem-srec - reads a binary file using bfd, and after converting
|
|
* it downloads it as an srecord using xmodem protocol.
|
|
* ascii-srec - reads a ascii srecord file and downloads it
|
|
* without a change.
|
|
* ascii-xmodem - reads a ascii file and downloads using xmodem
|
|
* protocol.
|
|
*/
|
|
void
|
|
monitor_load (file, fromtty)
|
|
char *file;
|
|
int fromtty;
|
|
{
|
|
FILE *download;
|
|
int i, bytes_read;
|
|
|
|
debuglogs (1, "Loading %s to monitor", file);
|
|
|
|
if (STREQ (loadtype_str, "default")) { /* default, load a binary */
|
|
gr_load_image (file, fromtty); /* by writing it into memory */
|
|
}
|
|
|
|
if (STREQ (loadtype_str, "srec")) { /* load an srecord by converting */
|
|
monitor_load_srec(file, fromtty); /* if from a binary */
|
|
}
|
|
|
|
if (STREQ (loadtype_str, "ascii-srec")) { /* load an srecord file */
|
|
monitor_load_ascii_srec(file, fromtty); /* if from a binary */
|
|
}
|
|
|
|
if (STREQ (loadtype_str, "xmodem-srec")) { /* load an srecord using the */
|
|
error ("This protocol is not implemented yet."); /* xmodem protocol */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* monitor_load_ascii_srec -- download an ASCII srecord file.
|
|
*/
|
|
#define DOWNLOAD_LINE_SIZE 100
|
|
int
|
|
monitor_load_ascii_srec (file, fromtty)
|
|
char *file;
|
|
int fromtty;
|
|
{
|
|
FILE *download;
|
|
char buf[DOWNLOAD_LINE_SIZE];
|
|
int i, bytes_read;
|
|
|
|
debuglogs (1, "Loading an ASCII srecord file, %s.", file);
|
|
|
|
download = fopen (file, "r");
|
|
if (download == NULL) {
|
|
error ("%s Does not exist", file);
|
|
return;
|
|
}
|
|
|
|
printf_monitor (LOAD_CMD);
|
|
|
|
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++ <=200) {} ; /* 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");
|
|
expect_prompt(1);
|
|
fclose (download);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
void
|
|
monitor_command (args, fromtty)
|
|
char *args;
|
|
int fromtty;
|
|
{
|
|
|
|
char *p;
|
|
char c, cp;
|
|
p = PROMPT;
|
|
|
|
debuglogs (1, "monitor_command (args=%s)", args);
|
|
|
|
if (monitor_desc == NULL)
|
|
error("monitor target not open.");
|
|
|
|
if (!args)
|
|
error("Missing command.");
|
|
|
|
printf_monitor ("%s\n", args);
|
|
|
|
expect_prompt(0);
|
|
}
|
|
|
|
/*
|
|
* monitor_load_srec -- download a binary file by converting it to srecords.
|
|
*/
|
|
static void
|
|
monitor_load_srec (args, fromtty)
|
|
char *args;
|
|
int fromtty;
|
|
{
|
|
bfd *abfd;
|
|
asection *s;
|
|
char buffer[1024];
|
|
int srec_frame = SREC_SIZE;
|
|
|
|
abfd = bfd_openr (args, 0);
|
|
if (!abfd) {
|
|
printf_filtered ("Unable to open file %s\n", args);
|
|
return;
|
|
}
|
|
|
|
if (bfd_check_format (abfd, bfd_object) == 0) {
|
|
printf_filtered ("File is not an object file\n");
|
|
return;
|
|
}
|
|
|
|
s = abfd->sections;
|
|
while (s != (asection *) NULL) {
|
|
srec_frame = SREC_SIZE;
|
|
if (s->flags & SEC_LOAD) {
|
|
int i;
|
|
char *buffer = xmalloc (srec_frame);
|
|
printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma, s->vma + s
|
|
->_raw_size);
|
|
fflush (stdout);
|
|
for (i = 0; i < s->_raw_size; i += srec_frame) {
|
|
if (srec_frame > s->_raw_size - i)
|
|
srec_frame = s->_raw_size - i;
|
|
|
|
bfd_get_section_contents (abfd, s, buffer, i, srec_frame);
|
|
monitor_write_srec (s->vma + i, buffer, srec_frame);
|
|
printf_filtered ("*");
|
|
fflush (stdout);
|
|
}
|
|
printf_filtered ("\n");
|
|
free (buffer);
|
|
}
|
|
s = s->next;
|
|
}
|
|
sprintf (buffer, "rs ip %lx", (unsigned long) abfd->start_address);
|
|
printf_monitor (buffer);
|
|
expect_prompt ();
|
|
}
|
|
|
|
|
|
static int
|
|
monitor_write_srec (memaddr, myaddr, len)
|
|
CORE_ADDR memaddr;
|
|
unsigned char *myaddr;
|
|
int len;
|
|
{
|
|
int done;
|
|
int checksum;
|
|
int x;
|
|
int retries;
|
|
int srec_bytes = 40;
|
|
int srec_max_retries = 3;
|
|
int srec_echo_pace = 0;
|
|
int srec_sleep = 0;
|
|
int srec_noise = 0;
|
|
char *buffer = alloca ((srec_bytes + 8) << 1);
|
|
|
|
retries = 0;
|
|
|
|
while (1) { /* FIXME !!! */
|
|
done = 0;
|
|
|
|
if (retries > srec_max_retries)
|
|
return(-1);
|
|
|
|
if (retries > 0) {
|
|
if (sr_get_debug() > 0)
|
|
printf("\n<retrying...>\n");
|
|
|
|
/* This gr_expect_prompt call is extremely important. Without
|
|
it, we will tend to resend our packet so fast that it
|
|
will arrive before the bug monitor is ready to receive
|
|
it. This would lead to a very ugly resend loop. */
|
|
|
|
gr_expect_prompt();
|
|
}
|
|
|
|
/* FIXME: this is just start_load pasted in... */
|
|
{ char *command;
|
|
command = (srec_echo_pace ? "lo 0 ;x" : "lo 0");
|
|
sr_write_cr (command);
|
|
sr_expect (command);
|
|
sr_expect ("\r\n");
|
|
#if 0
|
|
bug_srec_write_cr ("S0030000FC");
|
|
#endif
|
|
}
|
|
/* end of hack */
|
|
|
|
while (done < len) {
|
|
int thisgo;
|
|
int idx;
|
|
char *buf = buffer;
|
|
CORE_ADDR address;
|
|
|
|
checksum = 0;
|
|
thisgo = len - done;
|
|
if (thisgo > srec_bytes)
|
|
thisgo = srec_bytes;
|
|
|
|
address = memaddr + done;
|
|
sprintf (buf, "S3%02X%08X", thisgo + 4 + 1, address);
|
|
buf += 12;
|
|
|
|
checksum += (thisgo + 4 + 1
|
|
+ (address & 0xff)
|
|
+ ((address >> 8) & 0xff)
|
|
+ ((address >> 16) & 0xff)
|
|
+ ((address >> 24) & 0xff));
|
|
|
|
for (idx = 0; idx < thisgo; idx++) {
|
|
sprintf (buf, "%02X", myaddr[idx + done]);
|
|
checksum += myaddr[idx + done];
|
|
buf += 2;
|
|
}
|
|
|
|
if (srec_noise > 0) {
|
|
/* FIXME-NOW: insert a deliberate error every now and then.
|
|
This is intended for testing/debugging the error handling
|
|
stuff. */
|
|
static int counter = 0;
|
|
if (++counter > srec_noise) {
|
|
counter = 0;
|
|
++checksum;
|
|
}
|
|
}
|
|
|
|
sprintf(buf, "%02X", ~checksum & 0xff);
|
|
#if 0
|
|
bug_srec_write_cr (buffer);
|
|
#endif
|
|
|
|
if (srec_sleep != 0)
|
|
sleep(srec_sleep);
|
|
|
|
/* This pollchar is probably redundant to the gr_multi_scan
|
|
below. Trouble is, we can't be sure when or where an
|
|
error message will appear. Apparently, when running at
|
|
full speed from a typical sun4, error messages tend to
|
|
appear to arrive only *after* the s7 record. */
|
|
|
|
if ((x = sr_pollchar()) != 0) {
|
|
if (sr_get_debug() > 0)
|
|
printf("\n<retrying...>\n");
|
|
|
|
++retries;
|
|
|
|
/* flush any remaining input and verify that we are back
|
|
at the prompt level. */
|
|
gr_expect_prompt();
|
|
/* start all over again. */
|
|
/* FIXME: this is just start_load pasted in... */
|
|
{ char *command;
|
|
command = (srec_echo_pace ? "lo 0 ;x" : "lo 0");
|
|
sr_write_cr (command);
|
|
sr_expect (command);
|
|
sr_expect ("\r\n");
|
|
#if 0
|
|
bug_srec_write_cr ("S0030000FC");
|
|
#endif
|
|
}
|
|
/* end of hack */
|
|
|
|
done = 0;
|
|
continue;
|
|
}
|
|
|
|
done += thisgo;
|
|
}
|
|
#if 0
|
|
bug_srec_write_cr("S7060000000000F9");
|
|
#endif
|
|
++retries;
|
|
|
|
/* Having finished the load, we need to figure out whether we
|
|
had any errors. */
|
|
}
|
|
|
|
return(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 ("default", 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.");
|
|
}
|