Memory_reads_inferior() and monitor_fetch_registers() now work good on
both targets. On to the "set" functions...
This commit is contained in:
Rob Savoye
parent
aa400bd250
commit
51d6a95404
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@ -0,0 +1,988 @@
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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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if (sr_get_debug() > 3)
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printf ("Sending to monitor,\r\n\t\"%s\".\r\n", 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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/* Read a character from the remote system, doing all the fancy
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timeout stuff. */
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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())
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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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{
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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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perror_with_name("remote-monitor");
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}
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/* Scan input from the remote system, until STRING is found. If DISCARD is
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non-zero, then discard non-matching input, else print it out.
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Let the user break out immediately. */
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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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if (sr_get_debug())
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printf ("Expecting \"%s\".\n", 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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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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printf ("Ignoring \'%c\'.\n", 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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printf ("Accepting \'%c\'.\n", 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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printf ("get_hex_digit() got a 0x%x(%c)\n", 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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if (sr_get_debug() > 3)
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printf ("\nget_hex_digit() -- Read first nibble 0x%x\n", val);
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val |= get_hex_digit (0);
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if (sr_get_debug() > 3)
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printf ("\nget_hex_digit() -- Read second nibble 0x%x\n", val);
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*byt = val;
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if (sr_get_debug() > 3)
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printf ("\nget_hex_digit() -- Read a 0x%x\n", 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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if (sr_get_debug() > 3)
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printf ("\nget_hex_word() got a 0x%x.\n", 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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#ifdef LOG_FILE
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fputs ("\nIn Create_inferior()", log_file);
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#endif
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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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/* Open a connection to a remote debugger.
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NAME is the filename used for communication. */
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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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{
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if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate))
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{
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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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#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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|
||||
/*
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||||
* _close -- Close out all files and local state before this target loses control.
|
||||
*/
|
||||
|
||||
void
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monitor_close (quitting)
|
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int quitting;
|
||||
{
|
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SERIAL_CLOSE(monitor_desc);
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monitor_desc = NULL;
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|
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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");
|
||||
if (fclose(log_file) != 0)
|
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fprintf(stderr, "Error closing log file.\n");
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/* Terminate the open connection to the remote debugger.
|
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Use this when you want to detach and do something else
|
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with your gdb. */
|
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void
|
||||
monitor_detach (from_tty)
|
||||
int from_tty;
|
||||
{
|
||||
pop_target(); /* calls monitor_close to do the real work */
|
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if (from_tty)
|
||||
printf ("Ending remote %s debugging\n", target_shortname);
|
||||
}
|
||||
|
||||
/*
|
||||
* _resume -- Tell the remote machine to resume.
|
||||
*/
|
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void
|
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monitor_resume (pid, step, sig)
|
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int pid, step;
|
||||
enum target_signal sig;
|
||||
{
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Resume (step=%d, sig=%d)\n", step, sig);
|
||||
#endif
|
||||
|
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if (step)
|
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{
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printf_monitor (STEP_CMD);
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||||
/* wait for the echo. */
|
||||
expect (STEP_CMD, 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
printf_monitor (GO_CMD);
|
||||
/* swallow the echo. */
|
||||
expect (GO_CMD, 1);
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||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* _wait -- Wait until the remote machine stops, then return,
|
||||
* storing status in status just as `wait' would.
|
||||
*/
|
||||
|
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int
|
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monitor_wait (pid, status)
|
||||
int pid;
|
||||
struct target_waitstatus *status;
|
||||
{
|
||||
int old_timeout = timeout;
|
||||
#ifdef LOG_FILE
|
||||
fputs ("\nIn wait ()", log_file);
|
||||
#endif
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||||
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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 */
|
||||
|
||||
status->kind = TARGET_WAITKIND_STOPPED;
|
||||
status->value.sig = TARGET_SIGNAL_TRAP;
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||||
|
||||
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';
|
||||
|
||||
if (sr_get_debug() > 5)
|
||||
printf ("Got name \"%s\" from regno #%d.\n", buf, regno);
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
/* 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;
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Fetch Register (reg=%s)\n", get_reg_name (regno));
|
||||
fflush (log_file);
|
||||
#endif
|
||||
|
||||
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;
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Fetch Registers\n");
|
||||
fflush (log_file);
|
||||
#endif
|
||||
for (regno = 0; regno <= PC_REGNUM; regno++)
|
||||
monitor_store_register(regno);
|
||||
|
||||
registers_changed ();
|
||||
}
|
||||
|
||||
/* Store register REGNO, or all if REGNO == 0.
|
||||
return errno value. */
|
||||
void
|
||||
monitor_store_register (regno)
|
||||
int regno;
|
||||
{
|
||||
char *name;
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Store_register (regno=%d)\n", regno);
|
||||
#endif
|
||||
|
||||
if (regno < 0)
|
||||
monitor_store_registers ();
|
||||
else {
|
||||
if (sr_get_debug() > 3)
|
||||
printf ("Setting register %s to 0x%x\n", get_reg_name (regno), read_register (regno));
|
||||
|
||||
name = get_reg_name (regno);
|
||||
if (STREQ(name, ""))
|
||||
return;
|
||||
printf_monitor (ROMCMD(SET_REG), name); /* send the command */
|
||||
expect (name, 1); /* then strip the leading garbage */
|
||||
if (*ROMDELIM(SET_REG) != 0) { /* if there's a delimiter */
|
||||
expect (ROMDELIM(SET_REG), 1);
|
||||
}
|
||||
|
||||
if (*ROMDELIM(SET_REG) != 0) {
|
||||
printf_monitor ("%s%s\n",read_register(regno), 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);
|
||||
}
|
||||
|
||||
/* 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];
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Write_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len);
|
||||
#endif
|
||||
|
||||
#define MEM_PROMPT "" /* FIXME, bogus */
|
||||
for (i = 0; i < len; i++)
|
||||
{
|
||||
printf_monitor (SET_MEM, memaddr + i);
|
||||
expect (sprintf (buf, MEM_PROMPT, memaddr + i), 1);
|
||||
expect (CMD_DELIM);
|
||||
printf_monitor ("%x", myaddr[i]);
|
||||
if (sr_get_debug())
|
||||
printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]);
|
||||
if (CMD_END)
|
||||
{
|
||||
/*** expect (sprintf (buf, MEM_PROMPT, memaddr + i +1), 1);
|
||||
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;
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Read_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len);
|
||||
#endif
|
||||
|
||||
/* 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);
|
||||
if (sr_get_debug())
|
||||
printf ("\nDisplay %d bytes at %x\n", 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 0
|
||||
expect (buf,1); /* get the command echo */
|
||||
get_hex_word(1); /* strip away the address */
|
||||
#endif
|
||||
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;
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Insert_breakpoint (addr=%x)\n", addr);
|
||||
#endif
|
||||
|
||||
for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++)
|
||||
if (breakaddr[i] == 0)
|
||||
{
|
||||
breakaddr[i] = addr;
|
||||
if (sr_get_debug())
|
||||
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;
|
||||
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn Remove_breakpoint (addr=%x)\n", addr);
|
||||
#endif
|
||||
for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++)
|
||||
if (breakaddr[i] == addr)
|
||||
{
|
||||
breakaddr[i] = 0;
|
||||
/* some monitors remove breakpoints based on the address */
|
||||
if (strcasecmp (target_shortname, "bug") == 0)
|
||||
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;
|
||||
}
|
||||
|
||||
/* 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);
|
||||
}
|
||||
|
||||
/* Put a command string, in args, out to MONITOR. Output from MONITOR is placed
|
||||
on the users terminal until the prompt is seen. */
|
||||
|
||||
void
|
||||
monitor_command (args, fromtty)
|
||||
char *args;
|
||||
int fromtty;
|
||||
{
|
||||
#ifdef LOG_FILE
|
||||
fprintf (log_file, "\nIn command (args=%s)\n", args);
|
||||
#endif
|
||||
if (monitor_desc == NULL)
|
||||
error("monitor target not open.");
|
||||
|
||||
if (!args)
|
||||
error("Missing command.");
|
||||
|
||||
printf_monitor("%s\r", args);
|
||||
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.");
|
||||
}
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
/* Remote debugging interface for ROM68K boot monitor, for GDB.
|
||||
/* Remote debugging interface ROM monitors.
|
||||
* Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
|
||||
* Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
|
||||
*
|
||||
|
|
@ -22,41 +22,73 @@
|
|||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
struct rom_cmd_data {
|
||||
char *cmd; /* command to send */
|
||||
char *delim; /* the delimiter */
|
||||
char *result; /* the result */
|
||||
};
|
||||
|
||||
struct monitor_ops {
|
||||
int type; /* 1 is ascii, 0 is binary */
|
||||
char *init; /* initialize to the monitor */
|
||||
char *execute; /* execute or usually GO command */
|
||||
char *resume; /* continue command */
|
||||
char *step; /* single step */
|
||||
char *set_break; /* set a breakpoint */
|
||||
char *clr_break; /* clear a breakpoint */
|
||||
char *set_mem; /* set memory to a value */
|
||||
char *dis_mem; /* display memory */
|
||||
char *mem_prompt; /* prompt memory commands use */
|
||||
char *set_reg; /* set a register */
|
||||
char *reg_delim; /* delimiter between registers */
|
||||
char *get_reg; /* read a register */
|
||||
char *load; /* download command */
|
||||
struct rom_cmd_data setmem; /* set memory to a value */
|
||||
struct rom_cmd_data getmem; /* display memory */
|
||||
struct rom_cmd_data regset; /* set a register */
|
||||
struct rom_cmd_data regget; /* read a register */
|
||||
char *load; /* load command */
|
||||
char *prompt; /* monitor command prompt */
|
||||
char *cmd_delim; /* end-of-command delimitor */
|
||||
char *cmd_end; /* optional command terminator */
|
||||
struct target_ops *target; /* target operations */
|
||||
char *loadtypes; /* the load types that are supported */
|
||||
char **regnames; /* array of register names in ascii */
|
||||
};
|
||||
|
||||
extern struct monitor_ops *current_monitor;
|
||||
|
||||
#define PROTO_TYPE (current_monitor->type)
|
||||
#define LOADTYPES (current_monitor->loadtypes)
|
||||
#define INIT_CMD (current_monitor->init)
|
||||
#define GO_CMD (current_monitor->execute)
|
||||
#define CONT_CMD (current_monitor->resume)
|
||||
#define STEP_CMD (current_monitor->step)
|
||||
#define SET_BREAK_CMD (current_monitor->set_break)
|
||||
#define CLR_BREAK_CMD (current_monitor->clr_break)
|
||||
#define MEM_SET_CMD (current_monitor->set_mem)
|
||||
#define MEM_DIS_CMD (current_monitor->dis_mem)
|
||||
#define SET_MEM (current_monitor->setmem)
|
||||
#define GET_MEM (current_monitor->getmem)
|
||||
#define LOAD_CMD (current_monitor->load)
|
||||
#define GET_REG (current_monitor->get_reg)
|
||||
#define REG_DELIM (current_monitor->reg_delim)
|
||||
#define SET_REG (current_monitor->set_reg)
|
||||
#define GET_REG (current_monitor->regget)
|
||||
#define SET_REG (current_monitor->regset)
|
||||
#define CMD_END (current_monitor->cmd_end)
|
||||
#define CMD_DELIM (current_monitor->cmd_delim)
|
||||
#define PROMPT (current_monitor->prompt)
|
||||
#define MEM_PROMPT (current_monitor->mem_prompt)
|
||||
#define TARGET_OPS (current_monitor->target)
|
||||
#define TARGET_NAME (current_monitor->target->to_shortname)
|
||||
#define REGNAMES(x) (current_monitor->regnames[x])
|
||||
#define ROMCMD(x) (x.cmd)
|
||||
#define ROMDELIM(x) (x.delim)
|
||||
#define ROMRES(x) (x.result)
|
||||
|
||||
#define push_monitor(x) current_monitor = x;
|
||||
|
||||
|
||||
extern void monitor_open();
|
||||
extern void monitor_close();
|
||||
extern void monitor_detach();
|
||||
extern void monitor_resume();
|
||||
extern int monitor_wait();
|
||||
extern void monitor_fetch_register();
|
||||
extern void monitor_store_register();
|
||||
extern void monitor_prepare_to_store();
|
||||
extern int monitor_xfer_inferior_memory();
|
||||
extern void monitor_files_info();
|
||||
extern int monitor_insert_breakpoint();
|
||||
extern int monitor_remove_breakpoint();
|
||||
extern void monitor_kill();
|
||||
extern void monitor_load();
|
||||
extern void monitor_create_inferior();
|
||||
extern void monitor_mourn_inferior();
|
||||
|
|
|
|||
|
|
@ -44,9 +44,11 @@ static char *op50n_regnames[] = {
|
|||
struct target_ops op50n_ops = {
|
||||
"op50n",
|
||||
"Oki's debug monitor for the Op50n Eval board",
|
||||
|
||||
"Debug on a Oki OP50N eval board.\n\
|
||||
Specify the serial device it is connected to (e.g. /dev/ttya).",
|
||||
op50n_open,
|
||||
|
||||
monitor_close,
|
||||
0,
|
||||
monitor_detach,
|
||||
|
|
@ -85,18 +87,25 @@ Specify the serial device it is connected to (e.g. /dev/ttya).",
|
|||
|
||||
struct monitor_ops op50n_cmds = {
|
||||
1, /* 1 for ASCII, 0 for binary */
|
||||
"\n", /* monitor init string */
|
||||
".\n", /* monitor init string */
|
||||
"", /* execute or usually GO command */
|
||||
"", /* continue command */
|
||||
"", /* single step */
|
||||
"", /* set a breakpoint */
|
||||
"", /* clear a breakpoint */
|
||||
"", /* set memory to a value */
|
||||
"", /* display memory */
|
||||
"", /* prompt memory commands use */
|
||||
{ /* set a register */
|
||||
{
|
||||
"sx %x %x;.\n", /* set memory */
|
||||
"", /* delimiter */
|
||||
"", /* the result */
|
||||
},
|
||||
{
|
||||
"sx %x\n", /* get memory */
|
||||
": ", /* delimiter */
|
||||
" ", /* the result */
|
||||
},
|
||||
{
|
||||
"x %s %x\n", /* set a register */
|
||||
"", /* delimiter between registers */
|
||||
"=", /* delimiter between registers */
|
||||
"", /* the result */
|
||||
},
|
||||
{
|
||||
|
|
@ -104,7 +113,7 @@ struct monitor_ops op50n_cmds = {
|
|||
"=", /* delimiter between registers */
|
||||
" ", /* the result */
|
||||
},
|
||||
"r 0\r", /* download command */
|
||||
"r 0\n", /* download command */
|
||||
"#", /* monitor command prompt */
|
||||
" ", /* end-of-command delimitor */
|
||||
".\n", /* optional command terminator */
|
||||
|
|
|
|||
|
|
@ -88,11 +88,18 @@ struct monitor_ops w89k_cmds = {
|
|||
"T\r", /* single step */
|
||||
"BP %x\r", /* set a breakpoint */
|
||||
"BC %x\r", /* clear a breakpoint */
|
||||
"E %x %x\r", /* set memory to a value */
|
||||
"D %x\r", /* display memory */
|
||||
"", /* prompt memory commands use */
|
||||
{
|
||||
"e %x %x\n", /* set memory */
|
||||
"", /* delimiter */
|
||||
"", /* the result */
|
||||
},
|
||||
{
|
||||
"db %x %x\n", /* get memory */
|
||||
"", /* delimiter */
|
||||
"", /* the result */
|
||||
},
|
||||
{ /* set a register */
|
||||
"r %s %x\r", /* set a register */
|
||||
"r %s %x\n", /* set a register */
|
||||
"", /* delimiter between registers */
|
||||
"", /* the result */
|
||||
},
|
||||
|
|
|
|||
Loading…
Reference in New Issue